Patent Application
20240179719
The present application relates to the field of wireless communication technologies, and particularly to a detection method for a physical downlink control channel and a related apparatus.
In a New Radio (NR) system, a Physical Downlink Control Channel (PDCCH) is transmitted through a PDCCH candidate in a Search Space set (SS set). In the NR, the PDCCH candidate is defined as a candidate resource occupied by a PDCCH during transmission. The network device side may configure a certain number of PDCCH candidates for a terminal, and the number may be greater than the blind detection capability of the terminal, to increase the scheduling flexibility of the network side. In the related art, the blind detection capability of the terminal is defined according to the number of PDCCHs that can be detected.
When the terminal detects the PDCCH, the terminal may firstly determine a range of PDCCH candidates not exceeding the blind detection capability of the terminal according to an order of index values of SS sets where the PDCCH candidates are located in ascending order, and then perform the detection on the determined PDCCH candidates.
In a case that a terminal device monitors PDCCH candidates through blind detection, considering that there are a large number of PDCCH candidates, there is a situation that the blind detection capability of the terminal device cannot complete the detection of all PDCCH candidates, leading to a possibility that there are PDCCH candidates not detected by the terminal device, and thus causing failure of the PDCCH transmission.
The present application provides a detection method for a physical downlink control channel and a related apparatus, to solve the problem of failure of the PDCCH transmission because the terminal device monitors PDCCH candidates through blind detection in the prior art.
In a first aspect, an embodiment of the present application provides a detection method for a physical downlink control channel, applied to a terminal device and includes:
In the embodiment of the present application, the association relationship between search space sets is used to indicate which search space sets have the association relationship, and the search space sets with the association relationship are potential search space sets carrying the associated monitoring occasions.
In some possible embodiments, search space sets with an association relationship include a first search space set and a second search space set.
In the embodiments of the present application, based on the association relationship between the first search space set and the second search space set, it is helpful for the terminal device to determine the associated monitoring occasions in the first search space set and the second search space set, reducing the processing complexity of the terminal device.
In some possible embodiments, the determining the associated monitoring occasions of the PDCCH according to the indication information, includes:
In the embodiments of the present application, the terminal device determines the associated monitoring occasions and the corresponding search space sets according to the received indication information, to reduce the detection range for PDCCH detection.
In some possible embodiments, the determining the associated monitoring occasions of the PDCCH according to the indication information, includes:
In the embodiments of the present application, the terminal device can determine the associated monitoring occasions within the same span, to effectively reduce the number of times of blind combination. In addition, the network device side can also instruct the terminal device to determine the associated monitoring occasions according to the intra-span repeated transmission by an explicit notification, to flexibly schedule the intra-span repeated transmission and other repeated transmissions.
In some possible embodiments, for the intra-span repeated transmission mode, in a case that the first search space set and the second search space set in the same span have the same number of monitoring occasions, monitoring occasions of the first search space set within the span and monitoring occasions of the second search space set within the span are the associated monitoring occasions.
In the embodiments of the present application, the associated monitoring occasions can be determined in a simple manner within the same span, consuming fewer terminal resources and reducing the complexity.
In some possible embodiments, the method further includes:
In the embodiments of the present application, the case of repeated transmission in the same span is provided, and a solution of how to understand which monitoring occasions are associated monitoring occasions is provided, thereby reducing the number of times of blind combination on the terminal device side and improving the success rate of PDCCH transmission.
In some possible embodiments, the determining the associated monitoring occasions of the PDCCH according to the indication information, includes:
In the embodiments of the present application, the terminal device can determine the associated monitoring occasions among different spans, thereby reducing the number of times of blind combination performed by the terminal device, and improving the transmission reliability of the PDCCH. In addition, the network device side can also instruct the terminal device to determine the associated monitoring occasions according to the intra-span repeated transmission by an explicit notification, so as to flexibly schedule the inter-span repeated transmission and other repeated transmissions.
In some possible embodiments, for the inter-span repeated transmission mode, two spans satisfying a first predefined relationship are associated spans;
In the embodiments of the present application, a specific association mode of monitoring occasions among different spans is given, thereby effectively reducing the number of times of blind combination and improving the reliability of PDCCH transmission.
In some possible embodiments, the method further includes:
In some possible embodiments, the determining the associated monitoring occasions of the PDCCH according to the indication information, includes:
In the embodiments of the present application, the terminal device can determine the associated monitoring occasions from different slots, thereby effectively reducing the number of times of blind combination.
In some possible embodiments, for the inter-slot repeated transmission mode, two slots satisfying a second predefined relationship are associated slots;
In the embodiments of the present application, a specific association mode of monitoring occasions among different slots is given, thereby effectively reducing the number of times of blind combination and improving the reliability of PDCCH transmission.
In some possible embodiments, the method further includes:
In the embodiments of the present application, the monitoring occasions in the unassociated slot are defined, thereby effectively reducing the number of times of blind combination and improving the reliability of PDCCH transmission.
In some possible embodiments, the determining the associated monitoring occasions of the PDCCH according to the indication information, includes:
In the embodiments of the present application, the associated monitoring occasions are determined to be in the same slot, thereby effectively reducing the number of times of blind combination performed by the terminal device, and improving the reliability of PDCCH transmission.
In some possible embodiments, for the intra-slot repeated transmission mode, in a case that the first search space set and the second search space set in the same slot have the same number of monitoring occasions, monitoring occasions of the first search space set within the slot and monitoring occasions of the second search space set within the slot are the associated monitoring occasions.
In the embodiments of the present application, the associated monitoring occasions can be determined in a simple manner within the same slot, consuming fewer terminal resources and reducing the complexity.
In some possible embodiments, in a case that the number of monitoring occasions in the first search space set is not equal to the number of monitoring occasions in the second search space set within the same slot, any of the following cases is included:
In the embodiments of the present application, the case of repeated transmission in the same slot is provided, and a solution of how to understand which monitoring occasions are associated monitoring occasions is provided, thereby reducing the number of times of blind combination on the terminal device side and improving the success rate of PDCCH transmission.
In some possible embodiments, one span or one slot is one monitoring device, and the detecting the PDCCH according to the associated monitoring occasions, includes:
In the embodiments of the present application, the candidate detection devices can be screened for detection based on the associated monitoring occasions.
In some possible embodiments, a partial candidate detection device in two associated monitoring occasions in the monitoring device belongs to the monitoring device, and partial complexity in the first complexity belongs to the monitoring device.
In the embodiments of the present application, the candidate detection device is divided into the corresponding monitoring devices in a simple manner, thereby accurately ensuring that the processing complexity of the terminal in each monitoring device does not exceed the capability of the terminal.
In some possible embodiments, the partial candidate detection device is a candidate detection device, which is within the monitoring device, in the two associated monitoring occasions in the monitoring device.
In the embodiments of the present application, a clear scheme is given for the definition of the complexity of the candidate monitoring device in each monitoring device, thereby calculating the complexity in a simple manner, occupying fewer terminal resources, and reducing the power consumption.
In some possible embodiments, a complexity division mode of the partial complexity includes at least one of the following:
In the embodiments of the present application, a clear scheme is further given for the definition of the complexity of the candidate monitoring device in each monitoring device, thereby calculating the complexity in a simple manner, occupying fewer terminal resources, and reducing the power consumption.
In some possible embodiments, the method further includes:
In the embodiments of the present application, it can be guaranteed that the decoding complexity of each monitoring device does not exceed the capability of the terminal device.
In a second aspect, an embodiment of the present application provides a detection method for a physical downlink control channel, applied to the network device side, and including:
In the embodiment of the present application, through the indication information, the terminal device can determine the associated monitoring occasions for the same PDCCH, thereby effectively reducing the number of times of blind combination of the terminal device.
In some possible embodiments, in a case that the specific monitoring mode is a per span monitoring mode, the indication information further includes configuration information of intra-span repeated transmission.
In the embodiments of the present application, through the configuration information of intra-span repeated transmission, the terminal device may determine that the associated monitoring occasions for the same PDCCH are located in the same span, thereby effectively reducing the number of times of blind combination of the terminal device.
In some possible embodiments, in a case that the specific monitoring mode is a per slot monitoring mode, the indication information further includes configuration information that a repeated transmission mode of the PDCCH is inter-slot repeated transmission.
In the embodiments of the present application, through the configuration information of inter-slot repeated transmission, the terminal device may determine that the associated monitoring occasions for the same PDCCH are located among slots, thereby effectively reducing the number of times of blind combination of the terminal device.
In some possible embodiments, in a case that the specific monitoring mode is a per span monitoring mode, the indication information further includes configuration information of intra-slot repeated transmission.
In the embodiments of the present application, through the configuration information of inter-slot repeated transmission, the terminal device may determine that the associated monitoring occasions for the same PDCCH are located in the same slot, thereby effectively reducing the number of times of blind combination of the terminal device.
In a third aspect, an embodiment of the present application provides a terminal device, including a processor, a memory and a transceiver; where:
In some possible embodiments, search space sets with an association relationship include a first search space set and a second search space set.
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the processor is configured to:
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the processor is configured to:
In some possible embodiments, for the intra-span repeated transmission mode, in a case that the first search space set and the second search space set in the same span have the same number of monitoring occasions, monitoring occasions of the first search space set within the span and monitoring occasions of the second search space set within the span are the associated monitoring occasions.
In some possible embodiments, in a case that the number of monitoring occasions in the first search space set is not equal to the number of monitoring occasions in the second search space set within the same span, any of the following cases is included:
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the processor is configured to:
In some possible embodiments, for the inter-span repeated transmission mode, two spans satisfying a first predefined relationship are associated spans;
In some possible embodiments, the processor is further configured to:
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the processor is configured to:
In some possible embodiments, for the inter-slot repeated transmission mode, two slots satisfying a second predefined relationship are associated slots;
In some possible embodiments, the processor is further configured to:
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the processor is configured to:
In some possible embodiments, for the intra-slot repeated transmission mode, in a case that the first search space set and the second search space set in the same slot have the same number of monitoring occasions, monitoring occasions of the first search space set within the slot and monitoring occasions of the second search space set within the slot are the associated monitoring occasions.
In some possible embodiments, in a case that the number of monitoring occasions in the first search space set is not equal to the number of monitoring occasions in the second search space set within the same slot, any of the following cases is included:
In some possible embodiments, one span or one slot is one monitoring device, and when detecting the PDCCH according to the associated monitoring occasions, the processor is configured to:
In some possible embodiments, a partial candidate detection device in two associated monitoring occasions in the monitoring device belongs to the monitoring device, and partial complexity in the first complexity belongs to the monitoring device.
In some possible embodiments, the partial candidate detection device is a candidate detection device, which is within the monitoring device, in the two associated monitoring occasions in the monitoring device.
In some possible embodiments, a complexity division mode of the partial complexity includes at least one of the following:
In some possible embodiments, the processor is further configured to:
In a fourth aspect, an embodiment of the present application provides a network device side, including: a processor, a memory and a transceiver; where:
In some possible embodiments, in a case that the specific monitoring mode is a per span monitoring mode, the indication information further includes configuration information of intra-span repeated transmission.
In some possible embodiments, in a case that the specific monitoring mode is a per slot monitoring mode, the indication information further includes configuration information that a repeated transmission mode of the PDCCH is inter-slot repeated transmission.
In some possible embodiments, in a case that the specific monitoring mode is a per span monitoring mode, the indication information further includes configuration information of intra-slot repeated transmission.
In a fifth aspect, an embodiment of the present application provides a detection apparatus for a physical downlink control channel, applied to a terminal device, and including:
In some possible embodiments, search space sets with an association relationship include a first search space set and a second search space set.
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the monitoring occasion determining device is configured to:
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the monitoring occasion determining device is configured to:
In some possible embodiments, for the intra-span repeated transmission mode, in a case that the first search space set and the second search space set in the same span have the same number of monitoring occasions, monitoring occasions of the first search space set within the span and monitoring occasions of the second search space set within the span are the associated monitoring occasions.
In some possible embodiments, in a case that the number of monitoring occasions in the first search space set is not equal to the number of monitoring occasions in the second search space set within the same span, any of the following cases is included:
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the monitoring occasion determining device is configured to:
In some possible embodiments, for the inter-span repeated transmission mode, two spans satisfying a first predefined relationship are associated spans;
In some possible embodiments, the monitoring occasion determining device is further configured to:
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the monitoring occasion determining device is configured to:
In some possible embodiments, for the inter-slot repeated transmission mode, two slots satisfying a second predefined relationship are associated slots;
In some possible embodiments, the monitoring occasion determining device is further configured to:
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the monitoring occasion determining device is configured to:
In some possible embodiments, for the intra-slot repeated transmission mode, in a case that the first search space set and the second search space set in a same slot have the same number of monitoring occasions, monitoring occasions of the first search space set within the slot and monitoring occasions of the second search space set within the slot are the associated monitoring occasions.
In some possible embodiments, in a case that the number of monitoring occasions in the first search space set is not equal to the number of monitoring occasions in the second search space set within the same slot, any of the following cases is included:
In some possible embodiments, one span or one slot is one monitoring device, and when detecting the PDCCH according to the associated monitoring occasions, the monitoring occasion determining device is configured to:
In some possible embodiments, a partial candidate detection device in two associated monitoring occasions in the monitoring device belongs to the monitoring device, and partial complexity in the first complexity belongs to the monitoring device.
In some possible embodiments, the partial candidate detection device is a candidate detection device, which is within the monitoring device, in the two associated monitoring occasions in the monitoring device.
In some possible embodiments, a complexity division mode of the partial complexity includes at least one of the following:
In some possible embodiments, the monitoring occasion determining device is further configured to:
In a sixth aspect, an embodiment of the present application provides a detection apparatus for a physical downlink control channel, applied to the network device side and including:
In some possible embodiments, in a case that the specific monitoring mode is a per span monitoring mode, the indication information further includes configuration information of intra-span repeated transmission.
In some possible embodiments, in a case that the specific monitoring mode is a per slot monitoring mode, the indication information further includes configuration information that a repeated transmission mode of the PDCCH is inter-slot repeated transmission.
In some possible embodiments, in a case that the specific monitoring mode is a per span monitoring mode, the indication information further includes configuration information of intra-slot repeated transmission.
In a seventh aspect, an embodiment of the present application further provides a computer storage medium storing a computer program, where the computer program is configured to cause a computer to perform the method described in any one of the first aspect and the second aspect.
In an eighth aspect, an embodiment of the present application further provides a computer program product including program codes, where the computer program product, when running on the electronic device, causes the electronic device to perform the method described in any one of the first aspect and the second aspect.
Furthermore, the effects brought about by any implementation in the first to eighth aspects can refer to the effects brought about by different implementations in the first and second aspects, and will not be repeated here. These aspects and other aspects of the present application will be more clear and easy to understand in the description of the following embodiments.
In order to illustrate the embodiments of the present application more clearly, the accompanying figures which need to be used in describing the embodiments will be introduced below briefly. The accompanying figures described below are only some embodiments of the present application.
In the following, some terms in the embodiments of the present application are explained so as to facilitate the understanding of the embodiments of the disclosure.
The embodiments of the present application may be applicable to various systems, especially a 5G system. For example, the applicable systems may be: a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS) system, a Long Term Evolution (LTE) system, a LTE Frequency Division Duplex (FDD) system, a LTE Time Division Duplex (TDD) system, a Long Term Evolution Advanced (LTE-A) system, a Universal Mobile Telecommunication System (UMTS), a Worldwide interoperability for Microwave Access (WiMAX) system, a 5G New Radio (NR) system, etc. These systems all include terminal devices and network device sides. A core network part may also be included in the system, such as an Evolved Packet System (EPS), a 5G System (5GS), etc.
The terminal device involved in the embodiments of the present application may be a device for providing the voice and/or data connectivity to the user, a handheld device with the wireless connection function, or other processing devices connected to the wireless modem, etc. In different systems, the terminal device may have different names. For example, in a 5G system, the terminal device may be called User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via the Radio Access Network (RAN), and the wireless terminal device may be a mobile terminal, such as a mobile telephone (or called “cellular” telephone), and a computer with the mobile terminal, for example, may be a portable, pocket, handheld, computer built-in or vehicle-carried mobile device, which exchange the voice and/or data with the radio access network. For example, the wireless terminal device may be a Personal Communication Service (PCS) telephone, a cordless telephone, a Session Initiation Protocol (SIP) telephone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) and other devices. The wireless terminal device can also be called a system, a subscriber device, a subscriber station, a mobile station, mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, and a user device, which is not limited in the embodiments of the present application.
The network device side involved in the embodiments of the present application may be a core network and/or a base station, and the base station may include a plurality of cells providing services for terminals. Depending on specific application scenarios, the base station may also be called access point, or may be a device in the access network communicating with the wireless terminal via one or more sectors over the air interface, or may also be called other names. The network device side may be used to exchange the received air frame with the Internet Protocol (IP) packet, and used as the router between the wireless terminal device and the rest of the access network, where the rest of the access network may include IP communication networks. The network device side may further coordinate the attribute management of the air interface. For example, the network device side involved in the embodiments of the present application can be a network device side (Base Transceiver Station (BTS)) in the GSM or CDMA, or can be a network device side (NodeB) in the WCDMA, or can be an evolutional network device side (evolutional Node B (eNB or e-NodeB)) in the LTE system, a 5G base station (gNB) in the 5G network architecture (next generation system), or can be a Home evolved Node B (HeNB), a relay node, femto, pico, etc., which is not limited in the embodiments of the present application. In some network structures, the network device side may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.
The network architectures and service scenarios described in the embodiments of the present application are intended to illustrate the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation provided in the embodiments of the present application. With the evolution of network architectures and the emergence of new service scenarios, the embodiments of the present application are also applicable to similar problems.
In order to make the embodiments of the present application clearer, the present application will be further illustrated below in details with reference to the accompanying figures. The described embodiments are merely a part of the embodiments of the present application but not all the embodiments.
First of all, for ease of understanding, the cases of related technologies will be analyzed and illustrated below. It should be understood that the analysis of related technologies below also belongs to a part of the embodiments of the present application.
In the related technologies, the NR defines a PDCCH candidate as a candidate resource occupied by the PDCCH during transmission. Usually, when the PDCCH is transmitted on the PDCCH candidate, the network device side may configure a certain number of PDCCH candidates for the terminal device, to increase the scheduling flexibility of the network device side (such as a base station). However, the number of PDCCH candidates sent by the network device side to the terminal device may be greater than the blind detection capability of the terminal device. Here, when detecting the PDCCH, the terminal device side may determine the detected PDCCH candidate according to the index values of search space sets where the PDCCH candidates are located in ascending order. Specifically, the maximum number of PDCCH candidates that the terminal device can detect under the SubCarrier Spacing (SCS) configuration in one monitoring device (such as one slot, one span) is fixed, and the PDCCH candidates exceeding the upper limit of the number will not be detected by the terminal. If the PDCCH is transmitted in the undetected PDCCH candidate, the PDCCH transmission may fail.
The maximum number of PDCCH candidates that the terminal device can monitor under different subcarrier spacing configurations in one slot is as shown in Table 1.
Where MPDCCHmax,slot,μ is the maximum number of PDCCH candidates that can be monitored in a device slot in one downlink bandwidth part of one serving cell; and μ is the subcarrier spacing, where μE{0, 1, 2, 3}.
The maximum number of PDCCH candidates that the terminal device can monitor under different subcarrier spacing configurations in one span is as shown in Table 2.
Where MPDCCHmax,(X,Y),μ is the maximum number of PDCCH candidates that can be 1PDCCH monitored in one span of combination (X, Y) in one downlink bandwidth part of one serving cell; and u is the subcarrier spacing, where μe{0, 1}.
The transmission modes of the PDCCH may include single transmission and repeated transmission. In order to increase the reliability of the control information, one PDCCH can be respectively transmitted in two search space sets or one search space set in the repeated transmission mode of the PDCCH, where the search space set is a subset of the control resource set. Usually, one search space set contains a plurality of monitoring occasions, and each monitoring occasion can be used for PDCCH transmission. If the terminal device detects PDCCH candidates on any two monitoring occasions via blind detection, the number of PDCCHs that need to be detected will exceed the blind detection capability of the terminal device, thereby causing the failure of PDCCH transmission.
In order to solve the above problem, the present application proposes a PDCCH detection method and a related apparatus.
The embodiments of the present application can be summarized as follows: the network device side sends the indication information to the terminal device, where the indication information includes an association relationship between search space sets and a specific monitoring mode of the terminal device. The terminal device can determine the associated MOs for the same PDCCH based on the indication information, so that the terminal device can reduce the range of blind detection, and effectively reduce the number of times of blind combination of PDCCH candidates during joint detection and decoding of the PDCCH. The problem that the terminal device cannot detect the PDCCH within the scope of the monitoring capability is alleviated, thereby improving the success rate of PDCCH transmission.
A detection method for a physical downlink control channel according to embodiments of the present application will be described in detail below with reference to the accompanying drawings.
As shown in
In the embodiments of the present application, the association relationship between search space sets is used to indicate which search space sets have the association relationship, and the search space sets with the association relationship are potential search space sets carrying the associated monitoring occasions.
In some possible embodiments, the network device side may inform the terminal device that N search space sets are associated, where NE a positive integer. During implementation, N may be 1, to indicate that the associated monitoring occasions are in the same search space set. N may be more, such as 3, to indicate that the associated monitoring occasions of the same PDCCH are in three associated search space sets. When N is 3, the network device side may further instruct the terminal that two search space sets are associated during actual transmission through dynamic signaling. N may be 2, to indicate that the associated monitoring occasions of the same PDCCH are in two associated search space sets.
During implementation, each PDCCH corresponds to the associated first and second search space sets.
During implementation, the first search space set and the second search space set may be different or the same. When they are the same, it means that N is 1, that is, the PDCCH is transmitted at the monitoring occasion in the first search space set in this case. During implementation, an index value of the first search space set may be less than an index value of the second search space set. Of course, the index value of the first search space set may also be greater than the index value of the second search space set, as long as different search space sets can be distinguished to avoid ambiguity, which is not limited in the embodiments of the present application. It should be understood that the first search space set and the second search space set may be in the same control resource set, meaning that the PDCCH is repeatedly transmitted twice by one transmission and receiving point (TRP) (multi-TRPs); or the first search space set and the second search space set may not be in the same control resource set, meaning that the PDCCH is repeatedly transmitted twice by two TRPs, which is not limited in the present application.
Based on the association relationship between the first search space set and the second search space set, it is helpful for the terminal device to determine the associated monitoring occasions in the first search space set and the second search space set, reducing the processing complexity of the terminal device.
In addition, the above specific monitoring mode is the monitoring mode of the terminal device for the PDCCH, specifically including a per span monitoring mode and a per slot monitoring mode.
The monitoring mode of the terminal device and the association relationship between search space sets are indicated by the network device side to the terminal device. After receiving the indication information sent by the network device side, the terminal device performs step 102 that: associated monitoring occasions of the PDCCH are determined according to the indication information.
Then, in step 103, the PDCCH is detected according to the associated monitoring occasions.
Therefore, in the embodiment of the present application, the terminal device can determine the monitoring occasions of the same PDCCH, thus reducing the range of blind detection, effectively reducing the number of times of blind combination of PDCCH candidates during PDCCH joint detection and decoding, thereby improving the possibility of detecting the PDCCH candidate that transmits the PDCCH, and alleviating the problem of failure of PDCCH transmission.
The monitoring modes supported by the terminal device may include a per span monitoring mode and a per slot monitoring mode. The repeated transmission modes of the PDCCH may be divided into repeated transmission within the same span, repeated transmission within the same slot, repeated transmission among different spans, and repeated transmission among different slots; and the repeated transmission within the same slot may also be divided into repeated transmission within the same span and repeated transmission among different spans, and a hybrid transmission mode (that is, including repeated transmissions within the same span and repeated transmissions among different spans) may also exist in the same slot. Therefore, the association relationship of MOs may be configured in multiple ways under different monitoring modes and different repeated transmission modes. Thus, the present application provides multiple feasible solutions to determine the associated MOs.
For ease of understanding, the implementable modes under different indication information contents will be respectively illustrated below.
Part 1: per span monitoring mode.
In the present application, a variety of solutions can be provided for the per span monitoring mode described in the part 1, including the following.
Solution 1: the indication information includes: the per span monitoring mode+associated search space sets (hereinafter referred to as indication information 1).
In the case of the indication information 1, the association modes of monitoring occasions may include association modes 1.1-1.4 as follows.
Association mode 1.1: intra-span repeated transmission.
That is, based on the above indication information 1, the terminal device may determine that the repeated transmission mode of the PDCCH is intra-span repeated transmission, so it is understood that the associated monitoring occasions are within the same span. Thus, the terminal device can determine the associated monitoring occasions within the same span, to effectively reduce the number of times of blind combination.
During implementation, the association rule can be set according to actual requirements for the association of those monitoring occasions within the same span.
Since the number of monitoring occasions in the first search space set and the second search space set in the same span may be the same or different, the embodiments of the present application may provide different solutions to determine the associated monitoring occasions according to the number of monitoring occasions in different search space sets in the same span.
In a possible implementation 1.1.1, the number of monitoring occasions of the first search space set is equal to the number of monitoring occasions of the second search space set.
When different search space sets have the same number of the monitoring occasions, the associated monitoring occasions within the same span are respectively from the first search space set and the second search space set. For example, within the same span, the nth monitoring occasion of the first search space set and the mth monitoring occasion of the second search space set are the associated monitoring occasions. Here, both n and m are positive integers, and n and m may be equal or different.
When n and m are equal,
In the implementation, the associated monitoring occasions can be determined in a simple manner within the same span, consuming fewer terminal resources and reducing the complexity.
In a possible implementation 1.1.2, the number of monitoring occasions of the first search space set is not equal to the number of monitoring occasions of the second search space set.
If the number of monitoring occasions in the first search space set is not equal to the number of monitoring occasions in the second search space set within the same span, the associated monitoring occasions include any of the following cases.
Case 1: monitoring occasions of the first search space set in the span and monitoring occasions of the second search space set in the span are the associated monitoring occasions.
In the implementation, the nth monitoring occasion of the first search space set and the mth monitoring occasion of the second search space set within the same span are the associated monitoring occasions. Here, both n and m are positive integers, and n and m may be equal or different.
It should be noted that, when there is an unassociated monitoring occasion (that is, this monitoring occasion is not used to transmit the same PDCCH together with other monitoring occasions) in the same span, the unassociated monitoring occasion is determined as a monitoring occasion for the single transmission.
Case 2: monitoring occasions of the first search space set and the second search space set are all unassociated monitoring occasions.
That is, the monitoring occasions of the first search space set and the second search space set are monitoring occasions for the single transmission.
Case 3: monitoring occasions in the first search space set in the span are unassociated monitoring occasions, and the nth and mth monitoring occasions in the second search space set in the span are associated monitoring occasions, where n and m satisfy a predefined relationship, and both m and n are positive integers. Here, the predefined relationship between n and m may be determined according to actual requirements, for example, two adjacent monitoring occasions are the associated monitoring occasions. For example, the monitoring occasions at an interval of one monitoring occasion are associated monitoring occasions, for example, the first and third monitoring occasions in the same search space set are associated monitoring occasions.
It should be noted that the first search space set and the second search space set in the embodiments of the present application are only used to distinguish two search space sets. When implementing the solution of the case 3, the search space set for repeated transmission of the PDCCH may be any one of the two search space sets, as long as the terminal device and the network device side transmit and detect the PDCCH according to the consistent understanding.
Therefore, in the embodiments of the present application, the case of repeated transmission in the same span is provided, and a solution of how to understand which monitoring occasions are associated monitoring occasions is provided, thereby reducing the number of times of blind combination on the terminal device side and improving the success rate of PDCCH transmission.
Association mode 1.2: inter-span repeated transmission.
In embodiments of the present application, the inter-span repeated transmission can be determined based on the above indication information 1 (that is, indicating the per span monitoring mode+associated search space sets). Thus, the terminal device can determine that the associated monitoring occasions come from different spans, thereby reducing the number of times of blind combination and improving the transmission reliability of the PDCCH.
There may be two or more spans for repeated transmission of the PDCCH, which may be determined according to actual conditions. Two spans are taken as an example for description in the following.
In the inter-span repeated transmission mode, the terminal device determines two spans satisfying a first predefined relationship as associated spans. For example, the first predefined relationship can be understood as two adjacent spans or two non-adjacent spans including the first search space set and the second search space set, which can be set according to requirements and is not limited in the present application. The two associated spans may be located in the same slot or in different slots, which is not limited in the present application.
Determining the associated monitoring occasions between associated spans may be implemented as follows.
Case 1: it is determined that in the associated spans, a monitoring occasion in the first search space set in any span and a monitoring occasion in the second search space set in another span are the associated monitoring occasions.
As shown in
It should be noted that, if there is an unassociated monitoring occasion in the associated spans, this monitoring occasion may be determined as a monitoring occasion for the single transmission.
In the case 1, the monitoring occasions in different search space sets in different spans are associated. In another possible implementation, the associated monitoring occasions in different spans may come from the same search space set. Therefore, it can be implemented as follows.
Case 2: it is determined that in the associated spans, a monitoring occasion in the first search space set in any span and a monitoring occasion in the first search space set in another span are the associated monitoring occasions.
Similar to the above, it should be noted that the first search space set and the second search space set in the embodiments of the present application are only used to distinguish two search space sets. When implementing the solution of the case 2, the search space set for repeated transmission of the PDCCH may be any one of the two search space sets, as long as the terminal device and the network device side transmit and detect the PDCCH according to the consistent understanding.
Thus, in the embodiments of the present application, a specific association mode of monitoring occasions among different spans is given, thereby effectively reducing the number of times of blind combination and improving the reliability of PDCCH transmission.
It should be noted that, if there is an unassociated span (that is, there is a span that is not used for repeated transmission of the same PDCCH together with other spans), the monitoring occasions in the unassociated span are all determined as unassociated monitoring occasions. That is, the monitoring occasions in the unassociated span are all monitoring occasions for the single transmission.
Alternatively, in another implementation, the repeated transmission mode of the PDCHH in the unassociated span is determined as intra-slot repeated transmission. The solution of intra-slot repeated transmission will be explained in solution 1 in part 2 later, and will not be illustrated here.
In the embodiment, there is a clear understanding of the monitoring occasions in the unassociated span, which can help the terminal to effectively reduce the number of times of blind combination and improve the reliability of PDCCH transmission.
Association mode 1.3: Hybrid transmission mode.
As mentioned above, the repeated transmission modes of PDCCH can be divided into many cases. Since the indication information 1 fails to carry the repeated transmission mode of the terminal device for PDCCH while each slot can contain a plurality of spans, the terminal device may also determine that there are intra-span repeated transmission and inter-span repeated transmission in the same slot during implementation. During implementation, it can be determined whether the repeated transmission is intra-span repeated transmission or inter-span repeated transmission based on the association relationship of monitoring occasions. For example, if two associated monitoring occasions are respectively within two spans, the repeated transmission is inter-span repeated transmission; and if two associated monitoring occasions are both within one span, the repeated transmission is intra-span repeated transmission. It can also be determined whether the repeated transmission is intra-span repeated transmission or inter-span repeated transmission based on the numbers of monitoring occasions in the first search space set and the second search space set within the span. For example, if the numbers are different, it can be determined that the repeated transmission of the current span is inter-span repeated transmission; if the numbers are equal, it can be determined that the repeated transmission of the current span is intra-span repeated transmission.
The hybrid transmission mode can be shown in
In the implementation of the present application, the hybrid transmission mode can facilitate flexible scheduling of PDCCH candidates in the same slot.
Association mode 1.4: associated monitoring occasions are provided in different sets.
In the embodiment, based on the above indication, the terminal device may newly determine the association mode of monitoring occasions as: associating the monitoring occasion of the first search space set with the monitoring occasion of the second search space set.
That is, the associated monitoring occasions are located in the first search space set and the second search space set. During implementation, two MOs that have an association relationship in this association mode can be defined according to actual requirements, which is not limited in the present application. For example, the repeated transmission modes in the same slot can be defined, and as mentioned above, may include: the repeated transmission mode in the same span in the same slot for association, the repeated transmission mode among different spans in the same slot for association, and the hybrid transmission mode in the same slot for association. Of course, the associated monitoring occasions may also be determined according to the repeated transmission among different slots. No matter which way is adopted, as long as the terminal device and the network device side transmit and detect the PDCCH according to the consistent understanding.
Solution 2: the indication information includes: per span monitoring mode+associated search space sets+configuration information of intra-span repeated transmission (hereinafter referred to as indication information 2).
Based on the indication information 2, the terminal device may determine that the repeated transmission mode of the PDCCH is intra-span repeated transmission, and correspondingly, the associated monitoring occasions are located within the same span. In the implementation, the way to determine the associated occasions can refer to the implementation of the intra-span repeated transmission in 1.1 of solution 1, and will not be repeated here.
In the implementation, the network device side instructs the terminal device to determine the associated monitoring occasions according to the intra-span repeated transmission by an explicit notification, so as to flexibly schedule the intra-span repeated transmission and other repeated transmissions.
Solution 3: the indication information includes: per span monitoring mode+associated search space sets+configuration information of inter-span repeated transmission (hereinafter referred to as indication information 3).
Based on the indication information 3, the terminal device may determine that the repeated transmission mode of the PDCCH is inter-span repeated transmission, and correspondingly, the associated monitoring occasions are located within different spans. In the implementation, the way to determine the associated occasions can refer to the implementation of the inter-span repeated transmission in 1.2 of solution 1, and will not be repeated here.
In the implementation, the network device side instructs the terminal device to determine the associated monitoring occasions according to the inter-span repeated transmission by an explicit notification, so as to flexibly schedule the inter-span repeated transmission and other repeated transmissions.
The above is the ways to determine the associated monitoring occasions in the per span monitoring mode provided by the embodiments of the present application. The ways to determine the associated monitoring occasions in the per slot monitoring mode will be described below.
Part 2: per slot monitoring mode.
Solution 1: the indication information includes: per slot monitoring mode+associated search space sets (hereinafter referred to as indication information 4), or the indication information includes: per slot monitoring mode+associated search space sets+configuration information of intra-slot repeated transmission (hereinafter also referred to as indication information 4).
Based on the indication information 4, the terminal device may determine that the repeated transmission mode of the PDCCH is intra-slot repeated transmission. Therefore, the terminal device may determine that the associated monitoring occasions need to be determined within the same slot.
The associated monitoring occasions are within the same slot, which can help the terminal to effectively reduce the number of times of blind combination and improve the reliability of PDCCH transmission.
The intra-slot repeated transmission mode may be implemented by reference to the repeated transmission mode in the same span. For example, it may be implemented based on whether the number of monitoring occasions of the first search space set is equal to the number of monitoring occasions of the second search space set in the same slot.
In a possible implementation 2.1.1, the number of monitoring occasions of the first search space set is equal to the number of monitoring occasions of the second search space set in the same slot.
If the first search space set and the second search space set in the same slot have the same number of monitoring occasions, monitoring occasions of the first search space set within the slot and monitoring occasions of the second search space set within the slot are the associated monitoring occasions.
For example, the nth monitoring occasion of the first search space set and the mth monitoring occasion of the second search space set within the same slot are the associated monitoring occasions. Here, both n and m are positive integers, and n and m may be equal or different.
In the implementation, the associated monitoring occasions can be determined in a simple manner within the same slot, consuming fewer terminal resources and reducing the complexity.
It should be noted that, if there is an unassociated monitoring occasion in the same slot, then this monitoring occasion is determined as a monitoring occasion for the single transmission.
In a possible implementation 2.1.2, the number of monitoring occasions of the first search space set is not equal to the number of monitoring occasions of the second search space set.
If the number of monitoring occasions in the first search space set is not equal to the number of monitoring occasions in the second search space set within the same slot, any of the following cases is included.
Case 1: a first monitoring occasion in the slot and a second monitoring occasion in the slot are the associated monitoring occasions.
In an implementation, the nth monitoring occasion of the first search space set and the mth monitoring occasion of the second search space set within the same slot are the associated monitoring occasions. Here, both n and m are positive integers, and n and m may be equal or different.
It should be noted that, when there is an unassociated monitoring occasion (that is, this monitoring occasion is not used to transmit the same PDCCH together with other monitoring occasions) in the same slot, the unassociated monitoring occasion is determined as a monitoring occasion for the single transmission.
Case 2: monitoring occasions of the first search space set and the second search space set are all unassociated monitoring occasions.
That is, the monitoring occasions of the first search space set and the second search space set are monitoring occasions for the single transmission.
Case 3: monitoring occasions in the first search space set in the slot are all unassociated monitoring occasions, and nth and mth monitoring occasions in the second search space set in the slot are associated monitoring occasions, where n and m satisfy a predefined relationship, and both m and n are positive integers.
Here, the predefined relationship between n and m may be determined according to actual requirements, for example, two adjacent monitoring occasions are the associated monitoring occasions. For example, monitoring occasions at an interval of one monitoring occasion are associated monitoring occasions, for example, the first and third monitoring occasions in the same search space set are associated monitoring occasions.
It should be noted that the first search space set and the second search space set in the embodiments of the present application are only used to distinguish two search space sets. When implementing the solution of the case 3, the search space set for repeated transmission of the PDCCH may be any one of the two search space sets, as long as the terminal device and the network device side transmit and detect the PDCCH according to the consistent understanding.
Therefore, in the embodiments of the present application, the case of repeated transmission in the same slot is provided, and a solution of how to understand which monitoring occasions are associated monitoring occasions is provided, thereby reducing the number of times of blind combination on the terminal device side and improving the success rate of PDCCH transmission.
Solution 2: the indication information includes: per slot monitoring mode+associated search space sets+configuration information of inter-slot repeated transmission (hereinafter referred to as indication information 5).
Based on the indication information 5, the terminal device may determine that the repeated transmission mode of the PDCCH is inter-slot repeated transmission in the per slot monitoring mode. Thus, the terminal device can determine the associated monitoring occasions from different slots, thereby effectively reducing the number of times of blind combination.
When the repeated transmission mode of the PDCCH is inter-slot repeated transmission, the associated monitoring occasions of the same PDCCH come from different slots. During implementation, the associated monitoring occasions of the same PDCCH may come from two or more slots. For ease of understanding, two slots are taken as an example for description in the following.
The terminal device may determine two slots satisfying a second predefined relationship are associated slots. The second predefined relationship may be configured according to specific conditions, and for example, may be implemented as two adjacent slots or two non-adjacent slots.
For the associated slots, the associated monitoring occasions may include any of the following cases.
Case 1: in the associated slots, a monitoring occasion in the first search space set in any slot and a monitoring occasion in the second search space set in another slot are the associated monitoring occasions.
The implementation can be understood as the implementation of inter-span repeated transmission from different slots described in section 1.2 of solution 1 of part 1, which will not be repeated here. It should be noted that the case 1 is that the associated monitoring occasions come from the first search space set and the second search space set. In addition, as described in the case 2, the associated monitoring occasions may also come from the same search space set.
Case 2: in the associated slots, a monitoring occasion in the first search space set in any slot and a monitoring occasion in the first search space set in another slot are the associated monitoring occasions.
Similar to the above, it should be noted that the first search space set and the second search space set in the embodiment of the present application are only used to distinguish two search space sets. When implementing the solution of the case 2, the search space set for repeated transmission of the PDCCH may be any one of the two search space sets, as long as the terminal device and the network device side transmit and detect the PDCCH according to the consistent understanding.
Therefore, in the embodiment of the present application, a specific association mode of monitoring occasions among different slots is given, thereby effectively reducing the number of times of blind combination and improving the reliability of PDCCH transmission.
It should be noted that, if there is an unassociated slot (that is, there is a slot that is not used for repeated transmission of the same PDCCH together with other slots), the monitoring occasions in the unassociated slot are all determined as unassociated monitoring occasions. That is, the monitoring occasions in the unassociated slot are all monitoring occasions for the single transmission.
Alternatively, the repeated transmission mode of the PDCCH in the unassociated slot may also be determined as intra-slot repeated transmission.
In the above, the embodiments of the present application provide the ways to determine the associated monitoring occasions in different cases.
After determining the associated monitoring occasions, the terminal device may determine to detect which PDCCH candidates according to its own capability. As mentioned above, in order to facilitate the selection of detected PDCCHs, the embodiments of the present application propose the candidate detection device which may be a PDCCH candidate or a PDCCH candidate pair. One monitoring occasion may correspond to one or more candidate detection devices. Correspondingly, as mentioned above, in the embodiments of the present application, one span or one slot is taken as one monitoring device, and then the step of detecting the PDCCH according to the associated monitoring occasions may be implemented as shown in
Therefore, in the embodiment of the present application, the candidate detection device can be screened for detection based on the associated monitoring occasions.
That is, when one candidate detection device is one PDCCH candidate, the first complexity is the complexity of one PDCCH candidate; and when one candidate detection device is a PDCCH candidate pair, the first complexity is the complexity of the PDCCH candidate pair.
Taking one span being one monitoring device as an example, when the span includes a monitoring occasion, the monitoring occasion may be an unassociated monitoring occasion, and the complexity of each candidate detection device in the monitoring occasion is the second complexity. The monitoring occasion may be one of the associated monitoring occasions, and the complexity corresponding to the monitoring occasion may be determined according to cases.
Since the associated monitoring occasions have an association relationship, how the candidate detection devices in the associated monitoring occasions are divided needs to be explained. Different division methods will affect the screening of the detected PDCCH by the terminal device. In a possible embodiment, partial candidate detection devices in two associated monitoring occasions in the monitoring device belong to the monitoring device, and partial complexity in the first complexity belongs to the monitoring device.
In a possible embodiment, the partial candidate detection devices are candidate detection devices, which are within the monitoring device, in the two associated monitoring occasions in the monitoring device.
Taking span being one monitoring device as an example, it is assumed that the associated monitoring occasions include a monitoring occasion 1 and a monitoring occasion 2. If the monitoring occasion 1 is in the span 1 and the monitoring occasion 2 is also in the span 1, then candidate detection devices of the monitoring occasion 1 and the monitoring occasion 2 all belong to span 1. If the monitoring occasion 1 is in span 1 and the monitoring occasion 2 is in span 2, then candidate detection devices of the monitoring occasion 1 all belong to span 1, and the candidate detection devices of the monitoring occasion 2 all belong to span 2.
Therefore, in the embodiment of the present application, the candidate detection devices are divided into the corresponding monitoring devices in a simple manner, and the implementation occupies fewer terminal resources and reduces the power consumption.
Correspondingly, the complexity of each candidate detection device can also be divided according to actual requirements. For example, a partial candidate detection device is divided into the corresponding monitoring device, while the partial complexity in the first complexity is also divided into the corresponding monitoring device, which is implemented as follows.
Complexity division mode 1: if the network device side does not indicate a clear decoding method, the complexity of a partial candidate detection device of one candidate detection device in the associated monitoring occasions is the third complexity, and a sum of third complexities of all partial candidate detection devices in the one candidate detection device is the first complexity.
For example, one candidate detection device included in the associated monitoring occasions includes a PDCCH candidate 1 and a PDCCH candidate 2. The PDCCH candidate 1 belongs to span 1, and the PDCCH candidate 2 belongs to span 2. If the first complexity of one candidate detection device such as a PDCCH candidate pair is K, a sum of the third complexity of the PDCCH candidate 1 and the third complexity of the PDCCH candidate 2 is K. Correspondingly, the PDCCH candidate 1 and the PDCCH candidate 2 may share K equally, or may not share K equally, both of which are applicable to the embodiment of the present application.
Complexity division mode 2: if the network device side configures independent decoding, the complexity of the partial candidate detection device of the monitoring device is half of the first complexity; or, the complexity of the partial candidate detection device of the monitoring device is half of the first complexity; or, the complexity of the partial candidate detection device of the monitoring device is the second complexity. That is, the complexity of the partial candidate detection device divided into the current monitoring device is the same as the complexity of the candidate detection device in the unassociated monitoring time, that is, the complexity of the monitoring occasion for the single transmission.
Complexity division mode 3: if the network device side configures joint decoding, the complexity of the partial candidate detection device of the monitoring device is the third complexity, and a sum of third complexities of all partial candidate detection devices in one candidate detection device is the first complexity.
In the embodiments of the present application, a clear scheme is given for the definition of the complexity of candidate monitoring devices in each monitoring device, thereby calculating the complexity in a simple manner, occupying fewer terminal resources, and reducing the power consumption.
In some other embodiments, for the case of repeated transmission among different monitoring devices, if the network device side indicates to perform joint decoding on the PDCCH, the terminal device may also perform independent decoding on the PDCCH. For example, when the network side configures joint decoding, the terminal device performs independent decoding on the PDCCH. For example, the PDCCH may be decoded in one monitoring device, and no detection may be performed in another monitoring device due to exceeding the monitoring capability of the terminal, so that the decoding complexity of each monitoring device does not exceed the terminal capability.
In order to facilitate the understanding of the embodiments provided by the embodiments of the present application, the detection method for the physical downlink control channel provided by the embodiments of the present application will be described below in conjunction with specific embodiments.
The network device side indicates that the PDCCH monitoring mode of the terminal device is per span PDCCH monitoring, and the related configuration of PDCCH repeated transmission is that two associated search space sets (that is, the first search space set and the second search space set) are associated. Since the PDCCH repeated transmission mode is not configured on the terminal device, the terminal device may consider that the default transmission mode is intra-slot repeated transmission. That is, the same PDCCH may be transmitted in two monitoring occasions in the first search space set and the second search space set in one slot. The first search space set and the second search space set may be the same search space set or different search space sets. Correspondingly, two monitoring occasions in the first search space set and the second search space set may be in the same search space set or in different search space sets. Moreover, the first search space set and the second search space set may be in the same control resource set, meaning that the PDCCH is repeatedly transmitted twice by one TRP; or the first search space set and the second search space set may not be in the same control resource set, meaning that the PDCCH is repeatedly transmitted twice by two TRPs, which is not limited in the present application.
In the above case, the terminal device may determine that the nth monitoring occasion of the first search space set is associated with the nth monitoring occasion of the second search space set. According to different symbols configured for the monitoring occasions, the association relationship may be intra-span repeated transmission. As shown in
The association relationship may also be inter-span repeated transmission. Specifically, as shown in
In addition, the association relationship may be a hybird mode of inter-span repeated transmission and intra-span repeated transmission. As shown in
Since the current PDCCH monitoring mode of the terminal device is per span PDCCH monitoring mode, the terminal device may respectively determine the monitored PDCCH candidates in each span. If the nth monitoring occasion of the first search space set and the nth monitoring occasion of the second search space set are in different spans, the terminal device determines that the two monitoring occasions are included in the calculation of monitored candidate detection devices in the two spans. The monitored candidate detection device may be a PDCCH candidate, a PDCCH candidate pair, or other physical resources for PDCCH transmission. Moreover, when the number of candidate detection devices corresponding to the monitoring capability of the terminal is calculated, the device for measuring the monitored candidate detection devices may be the number of PDCCH candidates, the number of PDCCH candidate pairs, blind detection device, blind detection complexity device, complexity device, etc. The blind detection device, blind detection complexity device, complexity device or the like is the processing complexity when detecting the PDCCH candidate or PDCCH candidate pair. In the present application, the complexity device replaces the monitored candidate detection device for measuring the monitored candidate detection device. It should be understood that the complexity device, the monitored candidate detection device, the number of PDCCH candidates, the number of PDCCH candidate pairs, the blind detection device, the blind detection complexity device, etc. may be replaced equivalently.
For the inter-span repeated transmission, the monitored candidate detection device may be determined by the following method.
In the blind detection, the number of complexity devices for detecting one candidate detection device (for example, one PDCCH candidate pair, that is, two PDCCH candidates for transmitting the same PDCCH) is X (for example, the value of X may be an integer such as 1, 2, 3, etc., or a decimal between 1 and 2, which is not limited in the present application). If the monitoring occasions of one PDCCH candidate pair are divided into 2 spans, the candidate detection device and/or corresponding complexity device of each slot or span may be determined according to at least one of the following methods:
If the indication information indicates that the PDCCH monitoring mode of the terminal device is per span PDCCH monitoring, the related configuration of PDCCH repeated transmission is that the first search space set is associated with the second search space set. Since the PDCCH repeated transmission method is not configured, the behavior of the terminal device is vague, and the behavior of the terminal device needs to be defined in this case. For example, it can be considered that the default PDCCH repeated transmission mode is intra-span repeated transmission, that is, it corresponds to the monitoring capability of the PDCCH.
In the transmission mode, the terminal device determines the number of monitoring occasions in each span, and determines the association relationship of monitoring occasions in each span. For example, in each span, the nth monitoring occasion of any one of the first and second search space sets is associated with the nth monitoring occasion of the other search space set in the first and second search space sets. Here, any one search space set and the other search space set in the first and second search space sets refer to the first one (the search space set with the smallest index) and the second one (the search space set with a slightly larger index) among the associated first and second search space sets configured on the network device side.
In this case, the method for determining the monitored candidate detection device is: the terminal device determines two PDCCH candidates in two associated monitoring occasions as one PDCCH candidate pair, for example, two PDCCH candidates with the same Aggregation Level (AL) value and the same PDCCH candidate index in two monitoring occasions are determined as one PDCCH candidate pair. The terminal device uses the associated PDCCH candidate pairs in two monitoring occasions for determining the PDCCH candidate pair of the current slot or the current span.
Specifically, assuming that the terminal device detects that the number of complexity devices of the one PDCCH candidate pair is X (for example, X PDCCH candidates, X complexity devices, etc.), and the number of complexity devices corresponding to the maximum number of candidate detection devices that the terminal device can monitor in one slot or span is M, then the number of PDCCH candidate pairs that the terminal device can monitor in one slot or span is M/X. Therefore, the terminal device can determine which M/X PDCCH candidate pairs can be monitored in ascending order of the indexes of the search space sets or the serial number of a set composed of 2 monitoring occasions or the serial number of a set composed of 2 PDCCH candidate pairs or the like.
In all the embodiments of the present application, after the terminal device determines which PDCCH candidate pairs or PDCCH candidates can be used to calculate the monitored candidate detection device of which slot or span, the present application does not limit the method for determining the specific monitored candidate detection device.
If the numbers of monitoring occasions of two associated search space sets are not equal in a span, for example, there is only a monitoring occasion of the first search space set, but not the monitoring occasion of the second search space set in the first span in
In addition, it is also possible to avoid the unequal numbers of monitoring occasions of the first search space set and the second search space set in one span by limiting the scheduling or configuration on the network device side. That is, when the PDCCH monitoring capability of the terminal device is per span PDCCH monitoring, the related configuration of PDCCH repeated transmission is that the first search space set is associated with the second search space set, and the terminal device expects or determines that the number of monitoring occasions configured in the first search space set and the number of monitoring occasions configured in the second search space set in each span are always equal.
If the PDCCH monitoring mode of the terminal device is per span PDCCH monitoring, the related configuration of PDCCH repeated transmission is intra-span repeated transmission and associated search space sets, and the behavior of the terminal device is the same as that in the embodiment 2.
The terminal device determines the number of monitoring occasions in each span, and determines the association relationship of monitoring occasions in each span. For example, in the first search space set and the second search space set in each span, the nth monitoring occasion of any search space set is associated with the nth monitoring occasion of the other search space set. Here, any one search space set and the other search space set in the first and second search space sets refer to the first one (the search space set with the smallest index) and the second one (the search space set with a slightly larger index) among the associated first and second search space sets configured on the network device side.
In this case, the method for determining the monitored candidate detection device is an intra-span determining method.
If the numbers of monitoring occasions of two associated search space sets are not equal in a span, for example, there is only a monitoring occasion of the first search space set, but not the monitoring occasion of the second search space set in the first span in
When the numbers of monitoring occasions of two associated search space sets are both greater than 1, the terminal device determines that the nth monitoring occasion of any one search space set is associated with the nth monitoring occasion of the other search space set, and other unassociated monitoring occasions are used for the single transmission of the PDCCH.
In particular, when there is a monitoring occasion of only one search space set in one span, the terminal device determines that the search space set is used for the single transmission of the PDCCH.
Or, as long as the numbers of monitoring occasions of the first search space set and the second search space set are not equal in one span, the terminal device determines that both the first search space set and the second search space set are used for the single transmission of the PDCCH, or all monitoring occasions are used for the single transmission of the PDCCH.
In addition, it is also possible to avoid the unequal numbers of monitoring occasions of the first search space set and the second search space set in one span by limiting the scheduling or configuration on the network device side. That is, when the PDCCH monitoring capability of the terminal device is per span PDCCH monitoring, the related configuration of PDCCH repeated transmission is that the first search space set is associated with the second search space set, and the terminal device expects or determines that the number of monitoring occasions configured in the first search space set and the number of monitoring occasions configured in the second search space set in each span are always equal. The terminal device determines the number of monitoring occasions in each span, and determines the association relationship of the monitoring occasions in the span.
If the PDCCH monitoring capability of the terminal device is per span PDCCH monitoring, the related configuration of PDCCH repeated transmission is inter-span repeated transmission and associated search space sets, and the terminal device can determine which monitoring occasions are associated by the following method.
The terminal device firstly determines that two adjacent spans or every two adjacent spans can be used for PDCCH repeated transmission, and the nth monitoring occasion in the first span is associated with the nth monitoring occasion in the second span (the association method for monitoring occasions of inter-span).
Here, the nth monitoring occasion in the first span is associated with the nth monitoring occasion in the second span, and it may be at least one of the following cases
Further, if the number of spans is an odd number, the terminal device determines that the first or last span is not associated with other spans in one slot, and is used for repeated transmission of the PDCCH within the span or single transmission of the PDCCH.
The two spans may also be two spans that include monitoring occasions of associated search space sets. For example, only the monitoring occasion that includes any one associated search space set can be used for inter-span repeated transmission, or the monitoring occasions that need to include two associated search space sets (i.e., at least one monitoring occasion that needs to include any one of the associated first and second search space sets and at least one monitoring occasion that includes the other associated search space set) can be used for inter-span repeated transmission, etc. In this case, the two adjacent spans refer to two adjacent spans among spans that include the monitoring occasions of the associated first and second search space sets.
Moreover, which two spans can be used for inter-span repeated transmission may also depend on the configuration on the network device side. For example, the network device side configures that the first span and the third span in one slot on the terminal device are associated and used for repeated transmission of the same PDCCH; for another example, the network device side configures that the first span is associated with the fourth span, and the second span is associated with the third span in one slot on the terminal device. After determining two or more spans for the PDCCH repeated transmission, the terminal device may determine the association relationship between monitoring occasions within two spans according to the above association method for monitoring occasions of inter-span.
Moreover, if the PDCCH monitoring capability of the terminal device is per span PDCCH monitoring, the related configuration of PDCCH repeated transmission is associated search space sets. In this case, the terminal device can also determine that the default PDCCH repeated transmission mode is inter-span repeated transmission. The behavior of the terminal device is the same as the behavior described above.
If the PDCCH monitoring mode of the terminal device is per slot PDCCH monitoring, the related configuration of PDCCH repeated transmission is inter-slot repeated transmission and associated search space sets. If the terminal device determines that the first search space set and the second search space set in two slots are associated according to the configuration on the network device side or a predefined rule, the association method of monitoring occasions may be: the nth monitoring occasion in the first slot is associated with the nth monitoring occasion in the second slot. That is, similar to the method for determining monitoring occasions during the inter-span repeated transmission in the embodiment 4, there is only a need to replace spans by slots.
The way to determine the candidate detection device can refer to the related contents in
If the PDCCH monitoring mode of the terminal device is per slot PDCCH monitoring, the related configuration of PDCCH repeated transmission is associated search space sets, and in this case, the terminal device may determine that the PDCCH repeated transmission mode is intra-slot repeated transmission. The association relationship of monitoring occasions may be: the nth monitoring occasion of any one of the first and second search space sets is associated with the nth monitoring occasion of the other search space set in the first and second search space sets.
The way to determine the candidate detection device can refer to the related contents in
As shown in
The bus architecture may include any numbers of interconnected buses and bridges, and specifically link various circuits of one or more processors represented by the processor 400 and the memory represented by the memory 401. The bus architecture may further link various other circuits such as the peripheral device, voltage regulator and power management circuit, which are all well known in the art and thus will not be further described again herein. The bus interface provides an interface. The processor 400 is responsible for managing the bus architecture and general processing, and the memory 401 may store the data used by the processor 400 when performing the operations.
The procedure disclosed by the embodiments of the present application may be applied in the processor 400 or implemented by the processor 400. In the implementation process, each step of the signal processing flow may be completed by the integrated logic circuit of hardware in the processor 400 or the instruction in the form of software. The processor 400 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or perform each method, step and logical block diagram disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present application may be directly completed by a hardware processor, or completed by a combination of hardware and software devices in the processor. The software devices may be located in the random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable read only memory, register and other mature storage medium in the art. The storage medium is located in the memory 401, and the processor 400 reads the information in the memory 401 and completes the steps of the processing flow of data transmission in combination with its hardware.
Specifically, the processor 400 is configured to read the program in the memory 401 and perform:
In some possible embodiments, the search space sets with the association relationship include a first search space set and a second search space set.
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the processor is configured to:
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the processor is configured to:
In some possible embodiments, for the intra-span repeated transmission mode, in a case that the first search space set and the second search space set in the same span have the same number of monitoring occasions, monitoring occasions of the first search space set within the span and monitoring occasions of the second search space set within the span are the associated monitoring occasions.
In some possible embodiments, in a case that the number of monitoring occasions in the first search space set is not equal to the number of monitoring occasions in the second search space set within the same span, any of the following cases is included:
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the processor is configured to:
In some possible embodiments, for the inter-span repeated transmission mode, two spans satisfying a first predefined relationship are associated spans;
In some possible embodiments, the processor is further configured to:
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the processor is configured to:
In some possible embodiments, for the inter-slot repeated transmission mode, two slots satisfying a second predefined relationship are associated slots;
In some possible embodiments, the processor is further configured to:
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the processor is configured to: in a case that the specific monitoring mode is a per slot monitoring mode, determine that a repeated transmission mode of the PDCCH is intra-slot repeated transmission based on the indication information; or in a case that the specific monitoring mode is a per span monitoring mode, determine that a repeated transmission mode of the PDCCH is intra-slot repeated transmission based on the indication information; or in a case that the specific monitoring mode is a per span monitoring mode and the indication information further includes configuration information of intra-slot repeated transmission, determine that a repeated transmission mode of the PDCCH is the intra-slot repeated transmission.
In some possible embodiments, for the intra-slot repeated transmission mode, in a case that the first search space set and the second search space set in a same slot have the same number of monitoring occasions, monitoring occasions of the first search space set within the slot and monitoring occasions of the second search space set within the slot are the associated monitoring occasions.
In some possible embodiments, in a case that the number of monitoring occasions in the first search space set is not equal to the number of monitoring occasions in the second search space set within the same slot, any of the following cases is included:
In some possible embodiments, one span or one slot is one monitoring device, and when detecting the PDCCH according to the associated monitoring occasions, the processor is configured to:
In some possible embodiments, a partial candidate detection device in two associated monitoring occasions in the monitoring device belongs to the monitoring device, and partial complexity in the first complexity belongs to the monitoring device.
In some possible embodiments, the partial candidate detection device is a candidate detection device, which is within the monitoring device, in the two associated monitoring occasions in the monitoring device.
In some possible embodiments, a complexity division mode of the partial complexity includes at least one of the following:
In some possible embodiments, the processor is further configured to:
As shown in
The bus architecture may include any numbers of interconnected buses and bridges, and specifically link various circuits of one or more processors represented by the processor 500 and the memory represented by the memory 501. The bus architecture may further link various other circuits such as peripheral device, voltage regulator and power management circuit, which are all well known in the art and thus will not be further described again herein. The bus interface provides an interface. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 501 may store the data used by the processor 500 when performing the operations.
The procedure disclosed by the embodiments of the present application may be applied in the processor 500 or implemented by the processor 500. In the implementation process, each step of the signal processing flow may be completed by the integrated logic circuit of hardware in the processor 500 or the instruction in the form of software. The processor 500 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or perform each method, step and logical block diagram disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present application may be directly completed by a hardware processor, or completed by a combination of hardware and software devices in the processor. The software devices may be located in the random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable read only memory, register and other mature storage medium in the art. The storage medium is located in the memory 501, and the processor 500 reads the information in the memory 501 and completes the steps of the processing flow of data transmission in combination with its hardware.
Specifically, the processor 500 is configured to read the program in the memory 501 and perform:
In some possible embodiments, in a case that the specific monitoring mode is a per span monitoring mode, the indication information further includes configuration information of intra-span repeated transmission.
In some possible embodiments, in a case that the specific monitoring mode is a per slot monitoring mode, the indication information further includes configuration information that a repeated transmission mode of the PDCCH is inter-slot repeated transmission.
In some possible embodiments, in a case that the specific monitoring mode is a per span monitoring mode, the indication information further includes configuration information of intra-slot repeated transmission.
As shown in
In some possible embodiments, the associated search space sets include a first search space set and a second search space set.
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the monitoring occasion determining device is configured to:
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the monitoring occasion determining device is configured to:
In some possible embodiments, for the intra-span repeated transmission mode, in a case that the first search space set and the second search space set in the same span have the same number of monitoring occasions, monitoring occasions of the first search space set within the span and monitoring occasions of the second search space set within the span are the associated monitoring occasions.
In some possible embodiments, in a case that the number of monitoring occasions in the first search space set is not equal to the number of monitoring occasions in the second search space set within the same span, any of the following cases is included:
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the monitoring occasion determining device is configured to:
In some possible embodiments, for the inter-span repeated transmission mode, two spans satisfying a first predefined relationship are associated spans;
In some possible embodiments, the monitoring occasion determining device is further configured to:
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the monitoring occasion determining device is configured to:
In some possible embodiments, for the inter-slot repeated transmission mode, two slots satisfying a second predefined relationship are associated slots;
In some possible embodiments, the monitoring occasion determining device is further configured to:
In some possible embodiments, when determining the associated monitoring occasions of the PDCCH according to the indication information, the monitoring occasion determining device is configured to:
In some possible embodiments, for the intra-slot repeated transmission mode, in a case that the first search space set and the second search space set in a same slot have the same number of monitoring occasions, monitoring occasions of the first search space set within the slot and monitoring occasions of the second search space set within the slot are the associated monitoring occasions.
In some possible embodiments, in a case that the number of monitoring occasions in the first search space set is not equal to the number of monitoring occasions in the second search space set within the same slot, any of the following cases is included:
In some possible embodiments, one span or one slot is one monitoring device, and when detecting the PDCCH according to the associated monitoring occasions, the monitoring occasion determining device is configured to:
In some possible embodiments, a partial candidate detection device in two associated monitoring occasions in the monitoring device belongs to the monitoring device, and partial complexity in the first complexity belongs to the monitoring device.
In some possible embodiments, the partial candidate detection device is a candidate detection device, which is within the monitoring device, in the two associated monitoring occasions in the monitoring device.
In some possible embodiments, a complexity division mode of the partial complexity includes at least one of the following:
In some possible embodiments, the monitoring occasion determining device is further configured to:
for a case of repeated transmission between different monitoring devices, perform independent decoding on the PDCCH in a case that the network device side indicates to perform joint decoding on the PDCCH.
As shown in
In some possible embodiments, in a case that the specific monitoring mode is a per span monitoring mode, the indication information further includes configuration information of intra-span repeated transmission.
In some possible embodiments, in a case that the specific monitoring mode is a per slot monitoring mode, the indication information further includes configuration information that a repeated transmission mode of the PDCCH is inter-slot repeated transmission.
In some possible embodiments, in a case that the specific monitoring mode is a per span monitoring mode, the indication information further includes configuration information of intra-slot repeated transmission.
The present application has been described above by reference to the block diagrams and/or flow charts showing the methods, devices (systems) and/or computer program products according to the embodiments of the present application. It should be understood that one block shown in the block diagrams and/or flow charts and a combination of the blocks shown in the block diagrams and/or flow charts can be implemented by the computer program instructions. These computer program instructions can be provided to a general-purpose computer, a processor of a dedicated computer and/or another programmable data processing device to produce a machine, so that the instructions executed by the computer processor and/or another programmable data processing device create the methods for implementing the functions and/or actions specified in the blocks of the block diagrams and/or flow charts.
Accordingly, the present application can also be implemented by the hardware and/or software (including the firmware, resident software, microcode and the like). Further, the present application can adopt the form of computer program products on the computer usable or computer readable storage medium, which has the computer usable or computer readable program codes implemented in the medium, to be used by the instruction execution system or used in combination with the instruction execution system. In the context of the present application, the computer usable or computer readable storage medium can be any medium, which can contain, store, communicate with, transmit or transfer the programs, to be used by the instruction execution system, apparatus or device, or used in combination with the instruction execution system, apparatus or device.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202110362885.X | Apr 2021 | CN | national |
The present application is a National Stage of International Application No. PCT/CN2022/083174, filed on Mar. 25, 2022, which claims priority to Chinese Patent Application No. 202110362885.X, filed with the China National Intellectual Property Administration on Apr. 2, 2021 and entitled “Detection Method for Physical Downlink Control Channel and Related Apparatus”, which is hereby incorporated by reference in its entirety.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2022/083174 | 3/25/2022 | WO |
