The present disclosure relates to communication technologies and, in particular, to a communication method and apparatus, and a device.
A network device can transmit a physical downlink control channel (PDCCH) to a terminal device, and the PDCCH can carry control information to schedule the terminal device for data transmission.
In a multi-transmission-reception point (M-TRP) communication scenario, multiple TRPs (network device) can transmit the same PDCCH to the terminal device, so that the terminal device can jointly decode the same multiple PDCCHs, to increase the probability of successful receipt of the PDCCH.
Embodiments of the present disclosure provide a communication method and apparatus, and a device.
In a first aspect, an embodiment of the present disclosure provides a communication method, including:
In the second aspect, an embodiment of the present disclosure provides a communication apparatus, including a processing module and a receiving module, where,
In a third aspect, an embodiment of the present disclosure provides a terminal device, including: a transceiver, a processor and a memory;
In a fourth aspect, an embodiment of the present disclosure provides a computer-readable storage medium, where the computer-readable storage medium stores a computer-executable instruction thereon, and the computer-executable instruction, when executed by a processor, implements the communication method according to the first aspect.
For ease of understanding, concepts involved in embodiments of the present disclosure will be described first.
Network device: a device with a wireless transmission-reception function. The network device includes but is not limited to: an evolutional base station (Evolutional Node B, eNB or eNodeB) in long term evolution (LTE), a base station (gNodeB or gNB) or TRP in new radio (NR), a base station in a subsequent evolved system, an access node in a wireless fidelity (WiFi) system, a wireless relay node, a wireless backhaul node, etc. The base station may be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. Multiple base stations may support the aforementioned networks for the same technology, or may support the aforementioned networks for different technologies. A base station may contain one or more co-sited or non-co-sited TRPs.
Terminal device: a device with a wireless transmission-reception function. The terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted, the terminal device can also be deployed on water (such as on a ship), and the terminal can also be deployed in the air (such as on an aircraft, a balloon or a satellite). The terminal device may be a mobile phone, a tablet computer (Pad), a computer with a wireless transmission-reception function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, an wireless terminal in industrial control, a vehicle-mounted terminal device, a wireless terminal in self driving, a wireless terminal device in remote medical, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, a wireless terminal device in smart home, a wearable terminal device, etc. The terminal device involved in the embodiments of the present disclosure may also be referred to as a terminal, a user equipment (UE), a access terminal device, a vehicle-mounted terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a mobile termination, a remote station, a remote terminal device, a mobile device, a UE terminal device, a wireless communication device, a UE agent or a UE apparatus, etc. The terminal device can be fixed or mobile.
Transmission-reception point (TRP): a network device may include one or more transmission-reception points. A transmission-reception point may be an independent network device, or a part of the network device with a transmission-reception function. For example, a transmission-reception point may be an antenna, a group of antenna arrays, or an antenna panel in the network device.
The frequency domain resource set may also be a control-resource set (CORESET).
Association relationship between different PDCCH candidates: referring to that PDCCHs received on different PDCCH candidates have an association relationship. The PDCCHs received on different PDCCH candidates with an association relationship therebetween being the same, or the PDCCHs received carry same control information, or the PDCCHs received schedule a same PDSCH. In a possible implementation, if multiple PDCCHs are received on the PDCCH candidates with an association relationship, joint decoding may be performed based on the multiple PDCCHs. In a possible implementation, different PDCCH candidates must have a same aggregation level.
Association relationship between different PDCCH candidate sets: referring to that PDCCHs detected in different PDCCH candidate sets have an association relationship. For example, it is assumed that there is an association relationship between a first PDCCH candidate set and a second PDCCH candidate set, then, there is an association relationship between a PDCCH detected in the first PDCCH candidate set and a PDCCH detected in the second PDCCH candidate set. The PDCCHs received on different PDCCH candidate sets with an association relationship therebetween are the same, or the PDCCHs received carry same control information, or the PDCCHs received schedule a same PDSCH. In a possible implementation, the PDCCH candidates in the different PDCCH candidate sets must have a same aggregation level.
Association relationship between different search spaces: referring to that PDCCHs detected in different search spaces have an association relationship. For example, it is assumed that there is an association relationship between a first search space and a second search space, then, there is an association relationship between a PDCCH detected in the first search space and a PDCCH detected in the second search space. The PDCCHs received in different search spaces with an association relationship therebetween are the same, or the PDCCHs received carry same control information, or the PDCCHs received schedule a same PDSCH. In a possible implementation, the detected PDCCHs must have a same aggregation level.
Next, with reference to
In related technologies, after multiple transmission-reception points transmit the same PDCCH to the terminal device, since the terminal device cannot determine which PDCCHs have an associated relationship, the terminal device cannot jointly decode the PDCCHs with an associated relationship, resulting in a low probability of successful receipt of the PDCCH by the terminal device.
In order to solve the above technical problems, before receiving the PDCCH, the terminal device can first acquire the association relationship of the PDCCHs sent by multiple transmission-reception points, and perform reception of the PDCCHs and joint decoding on the PDCCHs based on the association relationship of the PDCCHs. Therefore, the probability of successful receipt of the PDCCH by the terminal device is increased.
The technical solution of the present disclosure is illustrated by specific embodiments below. It should be noted that, the following embodiments may exist independently or be combined with each other, and the same or similar content will not be repeated in different embodiments.
The first information is used to indicate an association relationship of PDCCHs transmitted by N transmission-reception points, and the N is an integer greater than or equal to 2.
The association relationship refers to an association relationship between PDCCHs sent by different transmission-reception points, that is, the association relationship is used to indicate which PDCCHs sent by different transmission-reception points are the same. For example, if there is an association relationship between a PDCCH1 corresponding to a TPR1 and a PDCCH2 corresponding to a TRP2, the PDCCH1 sent by the TRP1 is the same as the PDCCH2 sent by the TRP2, and the terminal device can jointly receive and jointly decode the PDCCH1 and the PDCCH2. The joint reception may indicate that the terminal device performs blind detection on the PDCCH1 and the PDCCH2 at the same time, and the joint decoding may refer to that the terminal device performs soft-combination on the PDCCH1 and the PDCCH2 for decoding.
The terminal device may acquire the first information in the following two ways.
Mode 1, the terminal device may receive the first information from the network device.
For example, the network device may send the first information to the terminal device through higher layer signaling. For example, the higher layer signaling may be reestablishment radio resource control (RRC) signaling, media access control-control element (MAC CE), downlink control information (DCI).
Mode 2, the first information may also be pre-configured or stipulated by a protocol.
It should be noted that, when application scenarios are different, the first information is also different, which will be described in the following embodiments and will not be repeated here.
S202, the terminal device receives the PDCCHs based on the first information.
The terminal device determines the PDCCHs with the association relationship based on the first information, and receives the PDCCHs with the association relationship. The PDCCHs with the association relationship are PDCCHs sent by different transmission-reception points. After receiving the PDCCHs with the association relationship, the terminal device may perform joint decoding on the PDCCHs with the association relationship.
In the embodiment of the present disclosure, before receiving the PDCCH, the terminal device can first acquire an association relationship of the PDCCHs sent by multiple transmission-reception points, and perform reception of the PDCCHs and joint decoding on the PDCCHs based on the association relationship of the PDCCHs. Therefore, the probability of successful receipt of the PDCCH by the terminal is increased.
Next, the first information in different cases will be described respectively.
First case: the N transmission-reception points correspond to a same frequency domain resource set.
In this case, a CORESET is associated with at least two transmission configuration indicator (TCI) states, each transmission-reception point corresponds to a TCI state, and it can be determined that a corresponding transmission-reception point is acquired based on the TCI state.
In this case, the PDCCH candidates may be divided into N PDCCH candidate sets based on the number N of transmission-reception points, and different transmission-reception points correspond to different PDCCH candidate sets. The first information may indicate the following two cases.
Case 1, the first information is used to indicate an association relationship between different PDCCH candidate sets.
In a possible implementation, the terminal device may acquire N PDCCH candidate sets in advance.
For example, it is assumed that the N is 3, the PDCCH candidates are divided into three PDCCH candidate sets, which are respectively recorded as PDCCH candidate set 1, PDCCH candidate set 2, and PDCCH candidate set 3. The first information may indicate that there is an association relationship between the PDCCH candidate set 1, the PDCCH candidate set 2 and the PDCCH candidate set 3. That is, there is an association relationship between a PDCCH detected in the PDCCH candidate set 1, a PDCCH detected in the PDCCH candidate set 2, and a PDCCH detected in the PDCCH candidate set 3. In a possible implementation, the PDCCH candidates may be of a same aggregation level. Case 2, the first information indicates an association relationship between different PDCCH candidates. In a possible implementation, the PDCCH candidates may be of a same aggregation level.
In case 2, the first information may indicate the association relationship between different PDCCH candidates. Different PDCCH candidates may correspond to different transmission-reception points. For example, first indication information indicates an association relationship between N different PDCCH candidates, and the N different PDCCH candidates are respectively associated with the N transmission-reception points.
For example, it is assumed that the N is 3, the three transmission-reception points are recorded as transmission-reception point 1, transmission-reception point 2, and transmission-reception point 3 respectively. It is assumed that there are 6 PDCCH candidates, and the indexes of the 6 PDCCH candidates are 1, 2, 3, 4, 5, 6 respectively. The transmission-reception point 1 corresponds to the PDCCH 1 and the PDCCH 4, the transmission-reception point 2 corresponds to the PDCCH 2 and the PDCCH 5, and the transmission-reception point 3 corresponds to the PDCCH 3 and the PDCCH 6. The association relationship indicated by the first indication information can be as shown in Table 1:
Please refer to Table 1, the first information indicates that there is an association relationship between the PDCCH 1, the PDCCH 2 and the PDCCH 3, and there is an association relationship between the PDCCH 4, the PDCCH 5 and the PDCCH 6.
Next, the first information will be described by taking N as 2 as an example.
When the N is 2, the two transmission-reception points may include a first transmission-reception point and a second transmission-reception point, where the first transmission-reception point corresponds to a first PDCCH candidate set, and the second transmission-reception point corresponds to a second PDCCH candidate set. The first information may indicate the following two cases.
Case 1, the first information is used to indicate an association relationship between the first PDCCH candidate set and the second PDCCH candidate set.
In a possible implementation, it is assumed that a number of PDCCH candidates is K, and indexes of the PDCCH candidates are sequentially recorded as 1, 2 . . . , K (where the K is an even number greater than or equal to 2), then, an index of a PDCCH candidate in the first PDCCH candidate set is less than or equal to K/2, an index of a PDCCH candidate in the second PDCCH candidate set is greater than K/2; or, the index of the PDCCH candidate in the second PDCCH candidate set is less than or equal to K/2, the index of the PDCCH candidate in the first PDCCH candidate is greater than K/2. The PDCCH candidates may have a same aggregation level.
For example, it is assumed that the number of PDCCH candidates is 6, and indexes of PDCCH candidates are 1, 2, 3, 4, 5, 6 sequentially, the PDCCH candidates included in the first PDCCH candidate set and the second PDCCH candidate set can be as shown in Table 2 or as shown in Table 3:
Please refer to Table 2, the index of the PDCCH candidate included in the first PDCCH candidate set is less than or equal to 3, and the index of the PDCCH candidate included in the second PDCCH candidate set is greater than 3.
Please refer to Table 3, the index of the PDCCH candidate included in the first PDCCH candidate set is greater than 3, and the index of the PDCCH candidate included in the second PDCCH candidate set is less than or equal to 3.
In a possible implementation, it is assumed that a number of the PDCCH candidates is K, and indexes of the PDCCH candidates are sequentially recorded as 1, 2 . . . , K (where the K is an even number greater than or equal to 2), the index of the PDCCH candidate included in the first PDCCH candidate set may be odd, and the index of the PDCCH candidate included in the second PDCCH candidate set may be even; or, the index of the PDCCH candidate included in the first PDCCH candidate set may be even, and the index of the PDCCH candidate included in the second PDCCH candidate set may be odd. The PDCCH candidates may have a same aggregation level.
For example, it is assumed that the number of PDCCH candidates is 6, and indexes of PDCCH candidates are 1, 4, 5, 4, 5, 6 sequentially, the PDCCH candidates included in the first PDCCH candidate set and the second PDCCH candidate set can be as shown in Table 4 or as shown in Table 5:
Please refer to Table 4, the index of the PDCCH candidate included in the first PDCCH candidate set is odd, and the index of the PDCCH candidate included in the second PDCCH candidate set is even.
Please refer to Table 5, the index of the PDCCH candidate included in the first PDCCH candidate set is even, and the index of the PDCCH candidate included in the second PDCCH candidate set is odd.
Case 2: the first information is used to indicate that there is an association relationship between an i-th PDCCH candidate and a j-th PDCCH candidate in the PDCCH candidate set, where i and j may be indexes of PDCCH candidates. In a possible implementation, the PDCCH candidates must be of a same aggregation level. The i and j are respectively less than or equal to the number of PDCCH candidates included in the PDCCH candidate set, and the PDCCH candidate set includes PDCCH candidates in a preset aggregation level.
For example, the association relationship indicated by the first information may be as shown in Table 6:
Please refer to Table 6, when the indexes of the PDCCH candidate are 1, 2, 3, 4, 5, 6, the first information indicates that PDCCH 1 is associated with PDCCH 4, PDCCH 2 is associated with PDCCH 5, and PDCCH 3 is associated with PDCCH 6. When the indexes of the PDCCH candidates are 1, 2, PDCCH 1 is associated with PDCCH 2. When the indexes of the PDCCH candidates are 1, 2, 3, 4, PDCCH 1 is associated with PDCCH 3, and PDCCH 2 is associated with PDCCH 4.
For example, it is assumed that the first PDCCH candidate set and the second PDCCH candidate set are as shown in Table 5, the association relationship indicated by the first information then may be as shown in Table 7:
Please refer to Table 7, when indexes of the PDCCH candidate are 1, 2, 3, 4, 5, 6, the first information indicates that PDCCH 1 is associated with PDCCH 2, PDCCH 3 is associated with PDCCH 4, and PDCCH 5 is associated with PDCCH 6. When the indexes of the PDCCH candidates are 1, 2, PDCCH 1 is associated with PDCCH 2. When the indexes of the PDCCH candidates are 1, 2, 3, 4, PDCCH 1 is associated with PDCCH 2, and PDCCH 3 is associated with PDCCH 4.
Second Case: Multiple Search Spaces Correspond to a Same Frequency Domain Resource Set.
In this case, the first information is used to indicate that there is an association relationship between PDCCHs in two or more search spaces.
In the following, description will be made by taking the first information indicating that there is an association relationship between the PDCCHs in the two search spaces as an example.
A period in the first search space includes M1 slots, where in each slot, the time frequency resource region, that can be determined based on the search space and CORESET configuration information, correspond to respective PDCCH candidate set. A period in the second search space includes M2 slots, where, in each slot, the time frequency resource region, that can be determined based on the search space and CORESET configuration information, correspond to respective PDCCH candidate set. For a period, the first information is used to indicate that an i-th PDCCH candidate set in the first search space is associated with an i-th PDCCH candidate set in the second search space, i≤M1, and i≤M2. In the time domain, the PDCCH candidate sets corresponding to M1 slots are arranged sequentially, and the PDCCH candidate sets corresponding to M2 slots are arranged sequentially. In a possible implementation, a PDCCH candidate set may include a PDCCH in a slot.
An i-th time frequency resource region corresponds to a time frequency resource region on an i-th slot determined jointly based on the search space and the CORESET within a search space period, and the time frequency resource region can be used to carry the transmission of the PDCCH. The i is less than or equal to the number of slots included in the search space in a period.
It should be noted that, the PDCCH candidate set X mentioned in the embodiment of the present disclosure can also be understood as an X-th time frequency resource region.
In this case, the association relationship between adjacent periods of two search spaces may be different, which will be described below with reference to
As an example, periods of search space 1 and search space 2 can be the same. In a possible implementation, slot durations of the search space 1 and the search space 2 are the same. The slot duration indicates a number of slots occupied by the search space in a period.
In the scenarios shown in
Example 1, in any scenario shown in
Please refer to Table 8, the first information is used to indicate that the i-th PDCCH candidate in the PDCCH candidate set 1-1 is associated with the i-th PDCCH candidate in the PDCCH candidate set 2-1. The i takes 1, 2, 3, 4, 5, 6 in turn. The PDCCH candidate set 1-1 may be transmitted by TRP-1 correspondingly, and the PDCCH candidate set 2-1 may be transmitted by TRP-2 correspondingly.
Example 2, in any scenario shown in
Please refer to Table 9, the PDCCH candidate sub-set 1-1 is associated with the PDCCH candidate sub-set 2-1. The PDCCH candidate sub-set 1-2 is associated with the PDCCH candidate sub-set 2-2.
Third Case: A Search Space is Associated with at Least Two Frequency Domain Resource Sets.
In this case, the first information is used to indicate that there is an association relationship between PDCCHs corresponding to the at least two frequency domain resource sets.
In a possible implementation, it is assumed that the at least two frequency domain resources include a first frequency domain resource set and a second frequency domain resource set. The first frequency domain resource set corresponds to a first PDCCH candidate set, and the second frequency domain resource set corresponds to a second PDCCH candidate set, the first information is used to indicate that there is an association relationship between the first PDCCH candidate set and the second PDCCH candidate set.
The multiplexing mode between different CORESETs can be frequency division multiplexing (FDM) and time division multiplexing (TDM). The association relationship indicated by the first information in different multiplexing modes will be described below, including the following two cases.
Case 1, FDM is used between different CORESETs.
When FDM is used between different CORESETs, at least two frequency domain resource sets include a first frequency domain resource set and a second frequency domain resource set. The first frequency domain resource set corresponds to a first PDCCH candidate set, and the second frequency domain resource set corresponds to a second PDCCH candidate set. The first information is used to indicate that there is an association relationship between a PDCCH in the first PDCCH candidate set and a PDCCH in the second PDCCH candidate set.
The search space in the FDM mode will be described below with reference to
In a possible implementation, the first information may also indicate an association relationship between a PDCCH candidate in the first PDCCH candidate set and a PDCCH candidate in the second PDCCH candidate set. Reference may be made to the examples shown in Table 8-Table 9, which will not be repeated here.
Case 2, TDM is used between different CORESETs.
When TDM is used between different CORESETs, at least two frequency domain resource sets include a first frequency domain resource set and a second frequency domain resource set. The first frequency domain resource set corresponds to T first PDCCH candidate sets, and the second frequency domain resource set corresponds to T second PDCCH candidate sets, the first information is then used to indicate that there is an association relationship between an i-th first PDCCH candidate set in the T first PDCCH candidate sets and an i-th second PDCCH candidate set in the T second PDCCH candidate sets. The T is an integer greater than or equal to 1, and the i is a positive integer less than or equal to the T. Each PDCCH candidate set corresponds to a slot, the T first PDCCH candidate sets are arranged sequentially in the time domain, and the T second PDCCH candidate sets are arranged sequentially in the time domain.
The search space in the TDM mode will be described below with reference to
In a possible implementation, the i-th first PDCCH candidate set includes S PDCCH candidates, the i-th second PDCCH candidate set includes S PDCCH candidates, where the S is an integer greater than or equal to 1. In addition to indicating that the i-th first PDCCH candidate set is associated with the i-th second PDCCH candidate set, the first information is also used to indicate that there is an association relationship between the PDCCH candidate in the i-th first PDCCH candidate set and the PDCCH candidate in the i-th second PDCCH candidate set.
For example, the first information is further used to indicate that there is an association relationship between a j-th PDCCH candidate in the i-th first PDCCH candidate set and a j-th PDCCH candidate in the i-th second PDCCH candidate set, and the j is an integer less than or equal to the S. For specific examples, reference may be made to the example shown in Table 8, which will not be repeated here.
For example, the first information is also used to indicate that there is an association relationship between a PDCCH candidate sub-set in the i-th first PDCCH candidate set and a PDCCH candidate sub-set in the i-th second PDCCH candidate set. For specific examples, reference may be made to the example shown in Table 9, which will not be repeated here.
Fourth Case: Different Search Spaces are Associated with Different Frequency Domain Resource Sets.
In this case, the first information is used to indicate that there is an association relationship between PDCCHs in different search spaces.
In a possible implementation, a first search space is associated with a first frequency domain resource set, and a second search space is associated with a second frequency domain resource set. In this case, the first information is used to indicate that there is an association relationship between a PDCCH in the first search space and a PDCCH in the second search space.
A period in the first search space includes K1 slots, where, in each slot, the time frequency resource region, that can be determined based on the search space and CORESET configuration information, corresponds to respective PDCCH candidate set, that is, the first search space includes K1 PDCCH candidate sets in a period, where the K1 is an integer greater than or equal to 1. A period in the second search space includes K2 slots, where in each slot, the time-frequency resource region, that can be determined based on the search space and CORESET configuration information, corresponds to respective PDCCH candidate set, that is, the second search space includes K2 PDCCH candidate sets in a period, where the K2 is an integer greater than or equal to 1. For a PDCCH candidate period of a PDCCH candidate, the first information is used to indicate that there is an association relationship between an i-th PDCCH candidate set in the K1 PDCCH candidate sets and an i-th PDCCH candidate set in the K2 PDCCH candidate sets, i≤K1, and i≤K2. In the time domain, the PDCCH candidate sets corresponding to K1 slots are arranged sequentially, and the PDCCH candidate sets corresponding to K2 slots are arranged sequentially.
A configuration parameter of the first search space may be different from a configuration parameter of the second search space. In a case that the first search space and the second search space have different configuration parameters, the association relationship indicated by the first information will be described respectively below. The configuration parameter may include a period, a slot duration, an offset, etc.
It should be noted that, in other period, the search space 1 includes PDCCH candidate set 5 and PDCCH candidate set 6, and the search space 2 includes PDCCH candidate set 7 and PDCCH candidate set 8. In this period, for the association relationship between the search space 1 and the search space 2, reference can be made to the above description, which will not be repeated here.
It should be noted that, in other period, the search space 1 includes PDCCH candidate set 7 to PDCCH candidate set 10, and the search space 2 includes PDCCH candidate set 11 and PDCCH candidate set 12. In this period, the association relationship between the search space 1 and the search space 2 can be referred to the above description, which will not be repeated here.
In a possible implementation, when the period of the first search space is different from the period of the second search space, and in a period, a search space includes a PDCCH candidate set, the first information is used to indicate that there is an association relationship between a first PDCCH candidate set in the first search space and a second PDCCH candidate set in the second search space. In the time domain, the second PDCCH candidate set is a PDCCH candidate set closest to the first PDCCH candidate set after the first PDCCH candidate set. Description will be given below combined with
When the period of the first search space is different from the period of the second search space, and the slot duration of the first search space is different from the slot duration of the second search space, the association relationship indicated by the first indication information then can be referred to
In the search space shown in any embodiment of
The communication apparatus provided in the embodiment of the present disclosure can be used to implement the technical solutions of the above method embodiments, and the implementation principles and technical effects thereof are similar, which will not be repeated here.
In a possible implementation, the first information is used to indicate at least one of the following information:
In a possible implementation, the N transmission-reception points correspond to a same frequency domain resource set, and different transmission-reception points correspond to different PDCCH candidate sets; and
In a possible implementation, the N transmission-reception points include a first transmission-reception point and a second transmission-reception point, the first transmission-reception point corresponds to a first PDCCH candidate set, and the second transmission-reception point corresponds to a second PDCCH candidate set;
In a possible implementation, the first information is used to indicate that there is an association relationship between an i-th PDCCH in the first PDCCH candidate set and an i-th PDCCH in the second PDCCH candidate set;
In a possible implementation, the N transmission-reception points correspond to a same frequency domain resource set;
In a possible implementation, multiple search spaces correspond to a same frequency domain resource set;
In a possible implementation, the multiple search spaces include a first search space and a second search space, the first search space includes M1 PDCCH candidate sets in a period, the second search space includes M2 PDCCH candidate sets in a period;
In a possible implementation, in time domain, the M1 PDCCH candidate sets are arranged sequentially, and the M2 PDCCH candidate sets are arranged sequentially.
In a possible implementation, one search space is associated with at least two frequency domain resource sets;
In a possible implementation, different control resource sets (CORESET) are frequency division multiplexing (FDM); the at least two frequency domain resource sets include a first frequency domain resource set and a second frequency domain resource set, where the first frequency domain resource set corresponds to a first PDCCH candidate set, and the second frequency domain resource set corresponds to a second PDCCH candidate set; and
In a possible implementation, the first information is used to indicate that there is an association relationship between an i-th PDCCH candidate in the first PDCCH candidate set and an i-th PDCCH candidate in the second PDCCH candidate set, the i is a positive integer less than or equal to P, and the P is a number of PDCCH candidates included in the search space.
In a possible implementation, the first PDCCH candidate set includes Q first PDCCH candidate sub-sets, and the second PDCCH candidate set includes Q second PDCCH candidate sub-sets; and
In a possible implementation, the at least two frequency domain resource sets include a first frequency domain resource set and a second frequency domain resource set, the first frequency domain resource set corresponds to T first PDCCH candidate sets, the second frequency domain resource set corresponds to T second PDCCH candidate sets, and the T is an integer greater than or equal to 1; and
In a possible implementation, the i-th first PDCCH candidate set includes S PDCCH candidates, and the i-th second PDCCH candidate set includes S PDCCH candidates, the S is an integer greater than or equal to 1; and
In a possible implementation, a first search space is associated with a first frequency domain resource set, and a second search space is associated with a second frequency domain resource set; and
In a possible implementation, a period of the first search space includes K1 PDCCH candidate sets, a period of the second search space includes K2 PDCCH candidate sets, the is an integer greater than or equal to 1, and the K2 is an integer greater than or equal to 1; and the first information is used to indicate that there is an association relationship between an i-th PDCCH candidate set in the K1 PDCCH candidate sets and an i-th PDCCH candidate set in the K2 PDCCH candidate sets, i≤K1, and i≤K2.
In a possible implementation, in time domain, the K1 PDCCH candidate sets are arranged sequentially, and the K2 PDCCH candidate sets are arranged sequentially.
In a possible implementation, the first information is used to indicate that there is an association relationship between a first PDCCH candidate set in the first search space and a second PDCCH candidate set in the second search space; and
The memory 22 is configured to store a program instruction;
An embodiment of the present disclosure provides a computer-readable storage medium, where the computer-readable storage medium stores a computer-executable instruction thereon, and the computer-executable instruction, when executed by a processor, implements the above communication methods.
An embodiment of the present disclosure may further provide a computer program product, where the computer program product may be executed by a processor, and when the computer program product is executed, any communication method performed by the terminal device shown above may be implemented.
The terminal device, the computer-readable storage medium, and the computer program product in the embodiments of the present disclosure can execute the communication method performed by the above-mentioned terminal device. The specific implementation process and beneficial effects can be referred to the above, which will not be repeated here.
In a first aspect, an embodiment of the present disclosure provides a communication method, including:
In a possible implementation, the first information is used to indicate at least one of the following information:
In a possible implementation, the N transmission-reception points correspond to a same frequency domain resource set, and different transmission-reception points correspond to different PDCCH candidate sets; and
In a possible implementation, the N transmission-reception points include a first transmission-reception point and a second transmission-reception point, the first transmission-reception point corresponds to a first PDCCH candidate set, and the second transmission-reception point corresponds to a second PDCCH candidate set;
In a possible implementation, the first information is used to indicate that there is an association relationship between an i-th PDCCH in the first PDCCH candidate set and an i-th PDCCH in the second PDCCH candidate set;
In a possible implementation, the N transmission-reception points correspond to a same frequency domain resource set;
In a possible implementation, multiple search spaces correspond to a same frequency domain resource set;
the first information is used to indicate that there is an association relationship between PDCCHs in at least two search spaces.
In a possible implementation, the multiple search spaces include a first search space and a second search space, the first search space includes M1 PDCCH candidate sets in a period, the second search space includes M2 PDCCH candidate sets in a period;
In a possible implementation, in time domain, the M1 PDCCH candidate sets are arranged sequentially, and the M2 PDCCH candidate sets are arranged sequentially.
In a possible implementation, one search space is associated with at least two frequency domain resource sets;
In a possible implementation, different control resource sets (CORESET) are frequency division multiplexing (FDM); the at least two frequency domain resource sets include a first frequency domain resource set and a second frequency domain resource set, where the first frequency domain resource set corresponds to a first PDCCH candidate set, and the second frequency domain resource set corresponds to a second PDCCH candidate set; and
In a possible implementation, the first information is used to indicate that there is an association relationship between an i-th PDCCH candidate in the first PDCCH candidate set and an i-th PDCCH candidate in the second PDCCH candidate set, the i is a positive integer less than or equal to P, and the P is a number of PDCCH candidates included in the search space.
In a possible implementation, the first PDCCH candidate set includes Q first PDCCH candidate sub-sets, and the second PDCCH candidate set includes Q second PDCCH candidate sub-sets; and
In a possible implementation, the at least two frequency domain resource sets include a first frequency domain resource set and a second frequency domain resource set, the first frequency domain resource set corresponds to T first PDCCH candidate sets, the second frequency domain resource set corresponds to T second PDCCH candidate sets, and the T is an integer greater than or equal to 1; and
In a possible implementation, the i-th first PDCCH candidate set includes S PDCCH candidates, and the i-th second PDCCH candidate set includes S PDCCH candidates, the S is an integer greater than or equal to 1; and
In a possible implementation, a first search space is associated with a first frequency domain resource set, and a second search space is associated with a second frequency domain resource set; and
In a possible implementation, a period of the first search space includes K1 PDCCH candidate sets, a period of the second search space includes K2 PDCCH candidate sets, the is an integer greater than or equal to 1, and the K2 is an integer greater than or equal to 1; and
In a possible implementation, in time domain, the K1 PDCCH candidate sets are arranged sequentially, and the K2 PDCCH candidate sets are arranged sequentially.
In a possible implementation, the first information is used to indicate that there is an association relationship between a first PDCCH candidate set in the first search space and a second PDCCH candidate set in the second search space; and
All or part of the steps for implementing the above method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a readable memory. When the program is executed, the steps including the above-mentioned method embodiments are implemented. The aforementioned memory (storage medium) includes: a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk, a solid state disk, a magnetic tape, a floppy disk, an optical disc and any combination thereof.
The embodiments of the present disclosure are described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each procedure and/or block in the flowchart and/or block diagrams, and combinations of procedures and/or blocks in the flowchart and/or block diagrams can be implemented by the computer program instruction. These computer program instruction may be provided to a processing unit of a general-purpose computer, a specialized computer, an embedded processor, or other programmable data processing device to produce a machine, such that an apparatus for implementing a function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram is produced via the instructions executed by the processing unit of the computer or other programmable data processing device.
These computer program instruction may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, such that the instructions stored in the computer-readable memory produce a manufacturing product including an instruction apparatus, where the instruction apparatus realizes the function specified in one or more procedures of the flow chart and/or one or more blocks of the block diagram.
These computer program instructions may also be loaded onto a computer or other programmable data processing device, such that a series of operational steps may be performed on the computer or other programmable device to produce the computer-implemented processing. Therefore, the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.
Obviously, those skilled in the art can make various modifications and variations of the embodiments of the present disclosure without going beyond the spirit and scope of the present disclosure. In this way, if these modifications and variations of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and equivalent technologies thereof, the present disclosure is also intended to include these modifications and variations.
In the present disclosure, the term “include” and its variants may refer to non-limiting inclusion, and the term “or” and its variants may refer to “and/or”. The terms “first”, “second”, etc. in the present disclosure are used to distinguish similar objects, and not necessarily used to describe a particular order or sequence. In the present disclosure, “multiple” refers to two or more than two. The term “and/or” is an association relationship describing associated objects, and represents that there may be three relationships. For example, A and/or B may represent three situations: presence of A only, presence of both A and B, and presence of B only. The character “/” herein generally represents an “or” relationship between contextual objects.
Number | Date | Country | Kind |
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202011105723.X | Oct 2020 | CN | national |
This application is a national stage of International Application No. PCT/CN2021/124002, filed on Oct. 15, 2021, which claims priority to Chinese patent application No. 202011105723.X, filed to the China National Intellectual Property Administration on Oct. 15, 2020, and entitled “Communication Method and Apparatus, and Device”. The disclosures of the aforementioned applications are hereby incorporated by reference in their entireties.
Filing Document | Filing Date | Country | Kind |
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PCT/CN2021/124002 | 10/15/2021 | WO |