Patent Application
20240179721
This application pertains to the field of communications technologies, and specifically relates to a PDCCH monitoring method, a related device, and a readable storage medium.
When new radio (NR) runs at a high frequency, an increase of a subcarrier spacing (SCS) causes a symbol granularity and a slot granularity to decrease. If physical downlink control channel (PDCCH) monitoring capabilities are defined based on a per-slot or per-span (where each span includes a plurality of symbols) granularity, complexity of terminal implementation is increased. Therefore, a solution for defining PDCCH monitoring capabilities based on a plurality of slots is necessary.
However, in a case that there are a plurality of search space types, currently, there is no related solution for defining PDCCH monitoring capabilities based on a plurality of slots.
Embodiments of this application provide a PDCCH monitoring method, a related device, and a readable storage medium.
According to a first aspect, a PDCCH monitoring method is provided. The method includes:
According to a second aspect, a PDCCH monitoring method is provided. The method includes:
According to a third aspect, a PDCCH monitoring apparatus is provided. The apparatus includes:
According to a fourth aspect, a PDCCH monitoring apparatus is provided. The apparatus includes:
According to a fifth aspect, a terminal is provided. The terminal includes a processor, a memory, and a program or instructions stored in the memory and capable of running on the processor. When the program or instructions are executed by the processor, the steps of the method according to the first aspect are implemented.
According to a sixth aspect, a network-side device is provided. The network-side device includes a processor, a memory, and a program or instructions stored in the memory and capable of running on the processor. When the program or instructions are executed by the processor, the step of the method according to the second aspect is implemented.
According to a seventh aspect, a terminal is provided and includes a processor and a communication interface, where
According to an eighth aspect, a network-side device is provided and includes a processor and a communication interface, where the communication interface is configured to:
According to a ninth aspect, a readable storage medium is provided. The readable storage medium stores a program or instructions. When the program or instructions are executed by a processor, the steps of the method according to the first aspect are implemented, or the steps of the method according to the second aspect are implemented.
According to a tenth aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run a program or instructions to implement the method according to the first aspect or implement the method according to the second aspect.
According to an eleventh aspect, a computer program product is provided. The computer program product is stored in a non-transitory storage medium. The computer program product is executed by at least one processor to implement the method according to the first aspect or implement the method according to the second aspect.
The following clearly describes the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are only some rather than all of the embodiments of this application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of this application shall fall within the protection scope of this application.
The terms “first”, “second”, and the like in this specification and claims of this application are used to distinguish between similar objects instead of describing a specific order or sequence. It should be understood that the terms used in this way are interchangeable in appropriate circumstances, so that the embodiments of this application can be implemented in other orders than the order illustrated or described herein. In addition, objects distinguished by “first” and “second” usually fall within one class, and a quantity of objects is not limited. For example, there may be one or more first objects. In addition, the term “and/or” in the specification and claims indicates at least one of connected objects, and the character “/” generally represents an “or” relationship between associated objects.
It should be noted that technologies described in the embodiments of this application are not limited to a long term evolution (LTE)/LTE-Advanced (LTE-A) system, and can also be used in other wireless communications systems, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single-carrier frequency-division multiple access (SC-FDMA), and other systems. The terms “system” and “network” in the embodiments of this application are usually used interchangeably. The described technologies may be used for the foregoing systems and radio technologies, and may also be used for other systems and radio technologies. However, in the following descriptions, the new radio (NR) system is described for an illustrative purpose, and NR terms are used in most of the following descriptions. These technologies may also be applied to other applications than an NR system application, for example, a 6th Generation (6G) communications system.
For ease of understanding, the following describes some content in the embodiments of this application.
1. Physical downlink control channel (PDCCH) monitoring capabilities in new radio (NR) Rel-15.
In NR Rel-15, PDCCH monitoring capabilities may be classified into mandatory capabilities and optional capabilities.
Capabilities mandatory without capability signaling (Mandatory without capability signaling) are as follows:
(1) Control resource set (CORESET): Each bandwidth part (BWP) of each cell can be configured with one additional CORESET based on CORESET 0.
Frequency range 1 (FR1): Bitmap of 6 radio bearers (RB)+1 to 3 symbols.
Frequency range 2 (FR2): Bitmap of 6 RBs+1 to 3 symbols for type 0, 0A, or 2 common search space (CSS), and type 1 configured by non-dedicated radio resource control (RRC) signalling; and Bitmap of 6 RBs+1 or 2 symbols for type 1, type 3, and UE-specific search space (USS) that are configured by dedicated RRC signalling.
Resource element group bundle size (REG bundle size): 2/3/6.
Interleaved and non-interleaved control channel element to resource element group mapping (Interleaved and non-interleaved CCE to REG mapping).
Setting a precoder granularity size to a REG bundle size is supported.
Dedicated demodulation reference signal (DMRS) scrambling is supported.
Configuring one or more transmission configuration indication states (TCI states) is supported.
(2) Unicast PDCCH transmission in CSS and USS (Unicast PDCCH transmission in CSS and USS).
Aggregation levels (AL) 1, 2, 4, 8, and 16.
For a scheduled secondary cell (SCell), each BWP has a maximum of three search space groups (SS sets) per slot (defined based on a scheduling cell), and this limit is used before dropping of a search space (SS).
For type 1, type 3, and USS that are configured by dedicated RRC, monitoring occasions are at first three symbols of a slot.
For type 0, 0A, or 2 CSS, and type 1 configured by non-dedicated RRC, monitoring occasions may be at any symbol of a slot, and in a single span of a slot (three consecutive orthogonal frequency division multiplexing (OFDM) symbols).
(3) Monitoring of downlink control information (DCI) 0_0, 0_1, 1_0, and 1_1 is supported.
(4) In a frequency division duplex (FDD) system, for each scheduled component carrier (CC), only one piece of DCI for scheduling DL unicast transmission and one piece of DCI for scheduling UL unicast transmission are processed per slot.
(5) In a time division duplex (TDD) system, for each scheduled CC, only one piece of DCI for scheduling DL unicast transmission and two pieces of DCI for scheduling UL unicast transmission are processed per slot.
Capabilities mandatory with capability signaling are as follows:
CORESET in FR2.
Bitmap of 6 RBs+3 symbols for type 1, type 3, and USS that are configured by dedicated RRC.
The optional capabilities are as follows:
(1) pdcchMonitoringSingleOccasion.
FR1: It indicates that UE supports receiving a PDCCH scrambled by a cell radio network temporary identifier (C-RNTI) and a configured scheduling radio network temporary identifier (CS-RNTI) at any three consecutive symbols in a 15 kilohertz (kHz) slot.
(2) pdcch-MonitoringAnyOccasions.
withoutDCI-gap: For type 1, type 3, and USS that are configured by dedicated RRC, monitoring occasions are at any symbol in a slot and comply with a restriction of a blind decoding (BD) budget.
withDCI-gap: For type 1, type 3, and USS that are configured by dedicated RRC, monitoring occasions are at any symbol in a slot, but a gap restriction needs to be satisfied between consecutive PDCCHs scrambled by any two C-RNTIs, modulation and coding scheme (MCS)-C-RNTIs, or CS-RNTIs: 15 kHz corresponds to 2 symbols (2 symbols for 15 kHz), 30 kHz corresponds to 4 symbols (4 symbols for 30 kHz), (60 kHz, NCP) corresponds to 7 symbols (7 symbols for (60 kHz, NCP)), and 120 kHz corresponds to 14 symbols (14 symbols for 120 kHz). In addition, the monitoring occasions comply with the restriction of the BD budget.
(3) pdcch-MonitoringAnyOccasionsWithSpanGap.
A span pattern is determined based on (X, Y) values of a UE report (UE reporting) configured based on all SS monitoring occasions.
A span pattern of each slot is the same.
A start position of a first span of the span pattern is a position of a first monitoring occasion of any slot. A span length is max {maximum value of all CORESET durations, minimum value of Y in the UE reported candidate value}, and a length of a last span may be shorter. A start position of a next span is a first position of a monitoring occasion that is not included in a previous span.
Whether the span pattern satisfies a (X, Y) restriction of at least one reporting is checked.
2. PDCCH monitoring capabilities in NR Rel-16.
In NR Rel-16, all PDCCH monitoring capabilities are optional capabilities as follows:
pdcch-Monitoring-r16: Different from those in Rel-15, supported span values can be reported per physical downlink shared channel processing type (Per PDSCH processing type) and per subcarrier spacing (Per SCS), and each span complies with a corresponding BD or control channel element (CCE) restriction.
pdcch-MonitoringMixed-r16: Different PDCCH monitoring capability configurations are supported for different serving cells.
pdcch-MonitoringCA-r16: UE report pdcch-Monitoring-r16, for configuring a maximum quantity of monitoring cells in per-span BD and CCE restrictions, and indicating support for alignment (aligned) of a span arrangement.
The following describes in detail the embodiments of this application by using some embodiments and application scenarios thereof with reference to the accompanying drawings.
Step 201: A terminal receives first information, where the first information includes at least one of the following: a search space configuration and a PDCCH monitoring capability configuration.
In a specific implementation, a network-side device may send the first information to the terminal to configure a SS of the terminal through the search space configuration and/or configure a PDCCH monitoring capability corresponding to each search space group of the terminal through the PDCCH monitoring capability configuration. A PDCCH monitoring capability corresponding to a search space group may be understood as a PDCCH monitoring capability of the terminal in the search space group.
Step 202: The terminal determines, based on the first information, PDCCH monitoring capabilities corresponding to R search space groups of the terminal, where R is a positive integer.
In a specific implementation, in a case that the first information includes the PDCCH monitoring capability configuration, the PDCCH monitoring capabilities corresponding to the R search space groups may be determined based on the PDCCH monitoring capability configuration.
In a case that the first information does not include the PDCCH monitoring capability configuration, the PDCCH monitoring capabilities corresponding to the R search space groups may be predefined by a protocol.
All search spaces of the terminal correspond to the R search space groups, and a specific representation is: cach of the R search space groups may include part or all of all search spaces of the terminal, and at least one search space among different search spaces of the R search space groups is different. Search spaces included in each search space group may be predefined by a protocol or configured by the network-side device.
Each of the R search space groups may correspond to at least one search space type, and search space types corresponding to different search space groups may be different or the same. The types of the search spaces may include CSS and USS. Further, the CSS may be further classified into at least one of the following: type 0, 0A, or 2 CSS, and type 1 CSS configured by non-dedicated RRC. The USS may be further classified into type 1, type 3, and USS that are configured by dedicated RRC.
Optionally, the PDCCH monitoring capabilities corresponding to the R search space groups may include at least one of the following:
It may be understood that all the PDCCH monitoring capabilities corresponding to the R search space groups are PDCCH monitoring capabilities supported by the terminal; and the PDCCH monitoring capabilities corresponding to the R search space groups may be the same or different, which may be specifically determined based on an actual situation and is not limited in this embodiment of this application. One search space group corresponds to one PDCCH monitoring capability, and for a PDCCH monitoring capability corresponding to a search space group, all search spaces in the search space group correspond to the PDCCH monitoring capability.
In an implementation, the support for the multi-slot-based PDCCH monitoring capability may be specifically represented by:
In other words, in this embodiment of this application, the PDCCH monitoring capability may be defined based on a granularity of the slot group or a granularity of the slot level span. A single slot group may include at least two slots; and a single slot level span may include a plurality of slots. In an actual application, a quantity of slots included in a single slot group and/or a quantity of slots included in a single slot level span may be reported by the terminal, configured by the network-side device, or predefined by a protocol, which may be determined based on an actual situation and is not limited in this embodiment of this application.
Step 203: The terminal monitors PDCCHs of N cell groups of the terminal based on the PDCCH monitoring capabilities corresponding to the R search space groups.
All cells of the terminal correspond to the N cell groups, and a specific representation may be: each of the N cell groups may include part or all of all the cells of the terminal, and at least one cell among different cells of the cell group is different. Cells included in each cell group may be predefined by a protocol or configured by the network-side device.
At least one of the R search space groups may be configured for the N cell groups. Search space groups configured for different cell groups may be the same or different, which may be specifically determined based on an actual situation and is not limited in this embodiment of this application.
In a specific implementation, for each cell group, a PDCCH of the cell group may be monitored based on a PDCCH monitoring capability corresponding to a search space group configured for the cell group.
In the PDCCH monitoring method in this application, the terminal can map the R search space group to the N cell groups, and the terminal can determine the PDCCH monitoring capabilities corresponding to the R search space groups, to monitor the PDCCHs of the N cell groups of the terminal. As can be learned, this application can define various types of PDCCH monitoring capabilities by using a search space group as a granularity, thereby improving flexibility of the search space configuration.
In this embodiment of this application, optionally, the N cell groups may include at least one of the following:
Optionally, the first condition includes at least one of the following:
It should be noted that, in an implementation, a cell corresponding to the PDCCH
monitoring capability based on the slot group and a cell corresponding to and supporting the PDCCH monitoring capability based on the slot level span may be considered as corresponding to the same PDCCH monitoring capability. In another implementation, a cell corresponding to the PDCCH monitoring capability based on the slot group and a cell corresponding to and supporting the PDCCH monitoring capability based on the slot level span may be considered as corresponding to different PDCCH monitoring capabilities.
That SCSs of the cells are the same may include: SCSs of active BWPs of the cells are the same; and/or SCSs of default BWPs of the cells are the same.
In this embodiment of this application, optionally, search spaces include P common search space types and Q UE-specific search space types, where P and Q are both integers greater than 1; and
That the search space group corresponds to a search space type may be understood as “the search space group includes a search space of the search space type.”
In this embodiment of this application, before receiving the first information, the terminal may report PDCCH monitoring capability information supported by the terminal to the network-side device, so that the network-side device performs the search space configuration and/or PDCCH monitoring capability configuration for the terminal based on the PDCCH monitoring capability information supported by the terminal, thereby increasing a probability that the R search space groups comply with the PDCCH monitoring capability of the terminal. Detailed descriptions are as follows:
Optionally, before the terminal receives the first information, the method may further include:
Optionally, the PDCCH monitoring capability information may include at least one of the following:
In this embodiment of this application, when indicating the PDCCH monitoring capability information of the terminal, the terminal may provide the indication by using the search space group as a granularity, thereby improving flexibility of the search space configuration.
The first version may be Release 17 or later.
Optionally, in a case that the first sub-information indicates that the target search space group supports the PDCCH monitoring capability based on the slot group, the PDCCH monitoring capability information of the target search space group further includes at least one of the following:
Optionally, in a case that the second sub-information indicates that the target search space group supports the PDCCH monitoring capability based on the slot level span, the PDCCH monitoring capability information of the target search space group further includes at least one of the following:
Because the terminal indicates the PDCCH monitoring capability information by using the search space group as the granularity, optionally, the PDCCH monitoring capability information corresponding to the R search space groups is the same or different. To be specific, PDCCH monitoring capability information of different search space groups may be the same or different, and a specific representation may be: at least one of the foregoing X1, O1, and Y1 is the same or different, and/or at least one of the foregoing X2, Y2, M, and O1 is the same or different.
The following describes a restriction on a time domain position of a PDCCH monitoring occasion.
First, a restriction on a slot in which the PDCCH monitoring occasion is located is described.
In this embodiment of this application, the restriction on the slot in which the PDCCH monitoring occasion is located may be determined by using the search space group as the granularity, thereby improving flexibility of the search space configuration. It may be understood that restrictions on slots in which PDCCH monitoring occasions of different search space groups are located may be the same or different.
Optionally, in a case that a target search space group corresponds to a PDCCH monitoring capability based on a slot group, a slot in which a monitoring occasion of the target search space group is located satisfies a second condition, and the second condition includes at least one of the following:
In a case that the target search space group corresponds to the PDCCH monitoring capability based on the slot group, for the target search space group, a target cell group corresponding to the target search space group may be determined first, and then a target slot corresponding to the target cell group may be determined, where the target slot is configured with a PDCCH monitoring occasion. In a case that the target cell group includes at least two cells, the target slot corresponding to the target cell group may be: a set of target slots corresponding to each cell in the target cell group.
For the determined target slot corresponding to the target cell group, a position of the slot group may be determined based on X1 and/or O1, and the slot in which the monitoring occasion of the target search space group is located satisfies at least one of the following:
Optionally, in a case that the R search space groups include at least two search space groups corresponding to the PDCCH monitoring capability based on the slot group, slots in which monitoring occasions of the at least two search space groups are located satisfy a same second condition or different second conditions. In other words, restrictions on slots in which PDCCH monitoring occasions of different search space groups are located may be the same or different, and a specific representation may be: Y1 in the second condition may be the same or different.
Optionally, in a case that a target search space group corresponds to a PDCCH monitoring capability based on a slot level span and that a pattern of the slot level span is determined based on a first rule, a slot in which a monitoring occasion of the target search space group is located satisfies a third condition, and the third condition includes:
In a case that the target search space group corresponds to the PDCCH monitoring capability based on the slot level span, a slot level span pattern, that is, a slot granularity span pattern, may be determined based on a slot position in which a PDCCH monitoring occasion of the target search space group is located and the first rule. In this case, a slot in which the monitoring occasion of the target search space group is located satisfies: the distance between the start slots of any consecutive slot level spans is not less than X2 slots.
Optionally, in a case that the R search space groups include at least two search space groups corresponding to the PDCCH monitoring capability based on the slot level span, slots in which monitoring occasions of the at least two search space groups are located satisfy a same third condition or different third conditions. In other words, restrictions on slots in which PDCCH monitoring occasions of different search space groups are located may be the same or different, and a specific representation may be: X2 in the third condition may be the same or different.
Optionally, in a case that the slot level span corresponds to Q unit times and that Q is an integer greater than 1, the first rule includes at least one of the following:
In rule 1, because the start position of the first slot level span within each unit time is the first slot configured with a PDCCH monitoring occasion within the unit time, that is, the first slot within the unit time, slot granularity span patterns of different unit times among the Q unit times may be the same or different, which is specifically determined based on the first slot of each unit time. For any two unit times, if first slots of the two unit times are different, slot granularity span patterns of the two unit times are different; or if first slots of the two unit times are the same, slot granularity span patterns of the two unit times may be the same.
In rule 2, because the start position of the first slot level span within each unit time is a slot having a same index as the fourth slot, the start position of the first slot level span within each unit time is the same. Therefore, slot granularity span patterns of different unit times among the Q unit times are the same, that is, the slot granularity span pattern is repeated within each of the Q unit times.
Next, a restriction on a symbol at which a PDCCH monitoring occasion is located is described.
In this embodiment of this application, the restriction on the symbol in which the PDCCH monitoring occasion is located may be determined by using the search space group as the granularity, thereby improving flexibility of the search space configuration. It may be understood that restrictions on symbols in which PDCCH monitoring occasions of different search space groups are located may be the same or different.
In addition, the symbol at which the PDCCH monitoring occasion of the search space group is located may be restricted by using a single symbol as a granularity or using a single symbol level span as a granularity. For different granularities, the symbol at which the PDCCH monitoring occasion is located may meet different conditions. Detailed descriptions are as follows:
Optionally, a symbol at which a monitoring occasion of a target search space group is located satisfies a fourth condition, and the fourth condition includes at least one of the following:
In this case, the symbol at which the PDCCH monitoring occasion of the search space group is located is restricted by using a single symbol as a granularity. The slot in the fourth condition may be understood as any slot among target slots corresponding to the target search space group.
Optionally, slots in which the R search space groups are located satisfy a same fourth condition or different fourth conditions. In other words, restrictions on symbols at which PDCCH monitoring occasions of different search space groups are located may be the same or different, and a specific representation may be: Y′ in the fourth condition may be the same or different.
Optionally, in a case that a pattern of a symbol level span is determined based on a second rule, a symbol at which a monitoring occasion of a target search space group is located satisfies a fifth condition, and the fifth condition includes:
In this case, the symbol at which the PDCCH monitoring occasion of the search space group is located is restricted by using a single symbol level span as a granularity. A symbol level span pattern, that is, a symbol granularity span pattern, may be determined based on the symbol at which the PDCCH monitoring occasion of the target search space group is located and the second rule. In this case, the symbol at which the PDCCH monitoring occasion of the target search space group is located may satisfy: a distance between start symbols of any consecutive symbol level spans is not less than X′ symbols.
Optionally, slots in which the R search space groups are located satisfy a same fifth condition or different fifth conditions. In other words, restrictions on symbols at which PDCCH monitoring occasions of different search space groups are located may be the same or different, and a specific representation may be: X′ in the fifth condition may be the same or different.
Optionally, in a case that the symbol level span corresponds to K unit times and that K is an integer greater than 1, the second rule includes at least one of the following:
In rule 3, because the start position of the first symbol level span within each unit time is the first symbol configured with a PDCCH monitoring occasion within the unit time, that is, the first symbol within the unit time, symbol granularity span patterns of different unit times among the Q unit times may be the same or different, which is specifically determined based on the first symbol of each unit time. For any two unit times, if first symbols of the two unit times are different, symbol granularity span patterns of the two time units are different; or if first symbols of the two unit times are the same, symbol granularity span patterns of the two time units may be the same.
In rule 4, because the start position of the first symbol level span within each unit time is a symbol having a same index as the fourth symbol, the start position of the first symbol level span within each unit time is the same. Therefore, symbol granularity span patterns of different unit times among the Q unit times are the same, that is, the symbol granularity span pattern is repeated within each of the Q unit times.
The following describes a restriction on PDCCH processing parameters corresponding to a search space group.
Optionally, PDCCH processing parameters corresponding to the R search space groups satisfy at least one of the following:
In determining manner 1, one search space group may be selected from the R search space groups as the reference search space group, and then, based on the PDCCH monitoring capability corresponding to the reference search space group, a manner of calculating the PDCCH processing parameters corresponding to the R search space groups is determined.
For determining manner 1, optionally, PDCCH processing parameters corresponding to a target search space group satisfy at least one of the following:
In this optional implementation, for different representations of multi-slot-based PDCCH monitoring capabilities, the PDCCH processing parameters corresponding to the target search space group are calculated in different manners.
In (i), when a restriction on the PDCCH processing parameters corresponding to the target search space group is determined, the slot group of the reference search space group is used as a granularity to count the PDCCH processing parameters corresponding to the target search space group in the slot group of each reference search space group. The PDCCH processing parameters corresponding to the target search space group in the slot group of each reference search space group comply with a first restriction on the PDCCH processing parameters.
In (ii), when the restriction on the PDCCH processing parameters corresponding to the target search space group is determined, the second slot group is first determined based on a slot granularity span pattern, and then the second slot group is used as a granularity to count the PDCCH processing parameters corresponding to the target search space group in cach second slot group. The PDCCH processing parameters corresponding to the target search space group in each second slot group comply with a first restriction on the PDCCH processing parameters.
Optionally, the second slot group satisfies:
In this embodiment of this application, the first restriction may be reported by the terminal, configured by the network-side device, or predefined by a protocol. In a specific implementation, the first restriction may be represented by a target value.
In a case that the PDCCH processing parameters are represented by BD quantities, a sum of PDCCH processing parameters of each slot group complies with the first restriction on the PDCCH processing parameters, and a representation may be: a sum of BD quantities of each slot group of each cell group is less than or equal to the target value.
In a case that the PDCCH processing parameters are represented by quantities of CCEs, a sum of PDCCH processing parameters of each slot group of each cell group complies with the first restriction on the PDCCH processing parameters, and a representation may be: a sum of quantities of CCEs of each slot group of each cell group is less than or equal to the target value.
For determining manner 2, the PDCCH processing parameters corresponding to the R search space groups are determined independently. In a specific implementation, the PDCCH processing parameters corresponding to each search space group may be determined based on the PDCCH monitoring capability corresponding to the search space group. In this manner, there may be separate PDCCH processing parameter restrictions for different search space groups.
When the restriction on the PDCCH processing parameters corresponding to the target search space group is determined, the slot group of the target search space group is used as a granularity to count the PDCCH processing parameters corresponding to the target search space group in the slot group of each target search space group. The PDCCH processing parameters corresponding to the target search space group in the slot group of each target search space group comply with the first restriction on the PDCCH processing parameters.
Step 301: A network-side device sends first information, where the first information includes at least one of the following: a search space configuration and a PDCCH monitoring capability configuration.
Optionally, before the network-side device sends the first information, the method further includes:
Optionally, PDCCH monitoring capability information of a target search space group includes at least one of the following:
Optionally, in a case that the first sub-information indicates that the target search space group supports the PDCCH monitoring capability based on the slot group, the PDCCH monitoring capability information of the target search space group further includes at least one of the following:
Optionally, in a case that the second sub-information indicates that the target search space group supports the PDCCH monitoring capability based on the slot level span, the PDCCH monitoring capability information of the target search space group further includes at least one of the following:
Optionally, the PDCCH monitoring capability information corresponding to the R search space groups is the same or different.
It should be noted that this embodiment serves as an embodiment of the network-side device corresponding to the method embodiment in
It should be noted that various optional implementations described in this embodiment of this application may be implemented in combination or may be implemented independently. This is not limited in this embodiment of this application.
For ease of understanding, the following uses an example for description.
In this example, a terminal may perform at least one of the following:
The first cell group set includes one or more of the following cell groups:
The first search space group set includes one or more of the following search space groups:
The PDCCH monitoring capability information may include one or more of the following:
The second condition is as follows:
The third condition is as follows:
The fourth condition is as follows:
When the first search space groups are different, corresponding first conditions may be the same or different.
When the first search space groups are different, corresponding PDCCH monitoring capability information may be the same or different.
For different first search space groups, UE reports or the base station configures different PDCCH monitoring capability related parameters.
A network-side device may perform at least one of the following:
In this embodiment, a PDCCH monitoring method may include the following steps.
Step 1: UE reports PDCCH monitoring capability related values (X1, Y1) for type 0, 0A, or 2 CSS and type 1 CSS configured by non-dedicated RRC, and PDCCH monitoring capability related values (X2, Y2) for type 1, type 3 CSS, and USS that are configured by dedicated RRC.
Step 2: The UE receives a search space configuration from a base station.
A slot configured with PDCCH monitoring occasions of type 0, 0A, or 2 CSS and type 1 CSS configured by non-dedicated RRC is determined, and a span pattern based on a slot granularity is determined based on (X1, Y1), where an interval between start slots of any consecutive spans is not less than X1 slots.
A slot configured with PDCCH monitoring occasions of type 1, type 3 CSS, and USS that are configured by dedicated RRC is determined, and a span pattern based on the slot granularity is determined based on (X2, Y2), where an interval between start slots of any consecutive spans is not less than X2 slots.
An advantage of this solution is that a CSS configuration does not limit USS configurations of multiple UEs.
Step 3: Determine a PDCCH monitoring capability parameter restriction.
Type 1, type 3 CSS, and USS that are configured by dedicated RRC are used as a reference search space group, the span pattern based on the slot granularity is determined based on (X2, Y2), and a BD/CCE budget is calculated. An original per span BD/CCE budget is expanded to a slot group between two consecutive spans, and BD/CCE checks are performed on PDCCHs in all search spaces in this slot group. Refer to
The embodiments of this application include the following protection points:
The PDCCH monitoring capability parameters (such as the quantity of blind detections or the quantity of CCEs) satisfy the fourth condition.
In addition, when the first search space groups are different, the corresponding PDCCH monitoring capability information and/or first condition may be the same or different.
It can be learned that in the embodiments of this application, at least one of the following may be performed by using the search space group as the granularity: defining the PDCCH monitoring capability, limiting the time domain position of the PDCCH monitoring occasion, and limiting the PDCCH processing parameters, thereby improving flexibility of the search space configuration.
It should be noted that the PDCCH monitoring method provided in the embodiments of this application may be performed by a PDCCH monitoring apparatus, or a control module configured to perform the PDCCH monitoring method in the PDCCH monitoring apparatus. A PDCCH monitoring apparatus provided in the embodiments of this application is described by assuming that the PDCCH monitoring method is performed by the PDCCH monitoring apparatus in the embodiments of this application.
As shown in
Optionally, the N cell groups include at least one of the following:
Optionally, the first condition includes at least one of the following:
Optionally, search spaces include P common search space types and Q UE-specific search space types, where P and Q are both integers greater than 1; and
Optionally, the PDCCH monitoring apparatus 500 further includes:
Optionally, PDCCH monitoring capability information of a target search space group includes at least one of the following:
Optionally, in a case that the first sub-information indicates that the target search space group supports the PDCCH monitoring capability based on the slot group, the PDCCH monitoring capability information of the target search space group further includes at least one of the following:
Optionally, in a case that the second sub-information indicates that the target search space group supports the PDCCH monitoring capability based on the slot level span, the PDCCH monitoring capability information of the target search space group further includes at least one of the following:
Optionally, the PDCCH monitoring capability information corresponding to the R search space groups is the same or different.
Optionally, in a case that a target search space group corresponds to a PDCCH monitoring capability based on a slot group, a slot in which a monitoring occasion of the target search space group is located satisfies a second condition, and the second condition includes at least one of the following:
Optionally, in a case that the R search space groups include at least two search space groups corresponding to the PDCCH monitoring capability based on the slot group, slots in which monitoring occasions of the at least two search space groups are located satisfy a same second condition or different second conditions.
Optionally, in a case that a target search space group corresponds to a PDCCH monitoring capability based on a slot level span and that a pattern of the slot level span is determined based on a first rule, a slot in which a monitoring occasion of the target search space group is located satisfies a third condition, and the third condition includes:
Optionally, in a case that the R search space groups include at least two search space groups corresponding to the PDCCH monitoring capability based on the slot level span, slots in which monitoring occasions of the at least two search space groups are located satisfy a same third condition or different third conditions.
Optionally, in a case that the slot level span corresponds to Q unit times and that Q is an integer greater than 1, the first rule includes at least one of the following:
Optionally, a symbol at which a monitoring occasion of a target search space group is located satisfies a fourth condition, and the fourth condition includes at least one of the following:
Optionally, slots in which the R search space groups are located satisfy a same fourth condition or different fourth conditions.
Optionally, in a case that a pattern of a symbol level span is determined based on a second rule, a symbol at which a monitoring occasion of a target search space is located satisfies a fifth condition, and the fifth condition includes:
Optionally, slots in which the R search space groups are located satisfy a same fifth condition or different fifth conditions.
Optionally, in a case that the symbol level span corresponds to K unit times and that K is an integer greater than 1, the second rule includes at least one of the following:
Optionally, PDCCH processing parameters corresponding to the R search space groups satisfy at least one of the following:
Optionally, in a case that the PDCCH processing parameters corresponding to the R search space groups are determined based on the PDCCH monitoring capability corresponding to the reference search space group, PDCCH processing parameters corresponding to a target search space group satisfy at least one of the following:
Optionally, the second slot group satisfies:
The PDCCH monitoring apparatus in this embodiment of this application may be an apparatus, or an apparatus or an electronic device with an operating system, or may be a component, an integrated circuit, or a chip in a terminal. The apparatus or the electronic device may be a mobile terminal, or may be a nonmobile terminal. For example, the mobile terminal may include but is not limited to the foregoing illustrated type of the terminal 11. The nonmobile terminal may be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine, a self-service machine, or the like. This is not specifically limited in this embodiment of this application.
The PDCCH monitoring apparatus 500 provided in this embodiment of this application can implement each process implemented by the method embodiment in
As shown in
Optionally, the PDCCH monitoring apparatus 600 further includes:
Optionally, PDCCH monitoring capability information of a target search space group includes at least one of the following:
Optionally, in a case that the first sub-information indicates that the target search space group supports the PDCCH monitoring capability based on the slot group, the PDCCH monitoring capability information of the target search space group further includes at least one of the following:
Optionally, in a case that the second sub-information indicates that the target search space group supports the PDCCH monitoring capability based on the slot level span, the PDCCH monitoring capability information of the target search space group further includes at least one of the following:
Optionally, the PDCCH monitoring capability information corresponding to the R search space groups is the same or different.
The PDCCH monitoring apparatus in this embodiment of this application may be an apparatus, or an apparatus or an electronic device with an operating system, or may be a component, an integrated circuit, or a chip in a network-side device. The network-side device may include but is not limited to the foregoing illustrated type of the network-side device 12. This is not specifically limited in this embodiment of this application.
The PDCCH monitoring apparatus 600 provided in this embodiment of this application can implement each process implemented by the method embodiment in
Optionally, as shown in
An embodiment of this application further provides a terminal, including a processor and a communication interface.
The communication interface is configured to:
The processor is configured to:
The terminal embodiment corresponds to the foregoing UE-side method embodiment, and each implementation process and implementation of the foregoing method embodiment can be applied to the terminal embodiment, with the same technical effect achieved. Specifically,
The terminal 800 includes but is not limited to at least some components such as a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 808, an interface unit 808, a memory 809, and a processor 810.
A person skilled in the art may understand that the terminal 800 may further include a power supply (for example, a battery) supplying power to all components. Optionally, the power supply may be logically connected to the processor 810 through a power management system. In this way, functions such as charge management, discharge management, and power consumption management are implemented by using the power management system. The terminal structure shown in
It should be understood that, in this embodiment of this application, the input unit 804 may include a graphics processing unit (GPU) 8041 and a microphone 8042. The graphics processing unit 8041 processes image data of a still picture or video obtained by an image capture apparatus (such as a camera) in a video capture mode or an image capture mode. The display unit 806 may include a display panel 8061, and the display panel 8061 may be configured in a form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 808 includes a touch panel 8081 and other input devices 8082. The touch panel 8081 is also referred to as a touchscreen. The touch panel 8081 may include two parts: a touch detection apparatus and a touch controller. The other input devices 8082 may include but are not limited to a physical keyboard, a function key (such as a volume control button or a power button), a trackball, a mouse, and a joystick. Details are not described herein again.
In this embodiment of this application, after receiving downlink data from a network-side device, the radio frequency unit 801 sends the downlink data to the processor 810 for processing, and in addition, sends uplink data to the network-side device. Generally, the radio frequency unit 801 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
The memory 809 may be configured to store software programs or instructions and various data. The memory 809 may primarily include a program or instruction storage area and a data storage area. The program or instruction storage area may store an operating system, an application program or instructions (such as an audio play function and an image play function) required by at least one function, and the like. In addition, the memory 809 may include a high-speed random access memory, and may further include a non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), or a flash memory, for example, at least one disk storage device, a flash memory device, or another non-volatile solid-state storage device.
The processor 810 may include one or more processing units. Optionally, the processor 810 may integrate an application processor and a modem processor. The application processor mainly processes the operating system, a user interface, an application program, or an instruction. The modem processor mainly processes wireless communication. For example, the modem processor is a baseband processor. It may be understood that the modem processor may alternatively not be integrated in the processor 810.
The radio frequency unit 801 is configured to:
The processor 810 is configured to:
It should be noted that the terminal 800 in this embodiment can implement each process of the method embodiment in
An embodiment of this application further provides a network-side device, including a processor and a communication interface. The communication interface is configured to:
The network-side device embodiment corresponds to the foregoing method embodiment of the network-side device, and each implementation process and implementation of the foregoing method embodiment can be applied to the network-side device embodiment, with the same technical effect achieved.
Specifically, an embodiment of this application further provides a network-side device. As shown in
The radio frequency apparatus may be located in the baseband apparatus 93. The method performed by the network-side device in the foregoing embodiment may be implemented in the baseband apparatus 93, and the baseband apparatus 93 includes a processor 94 and a memory 95.
The baseband apparatus 93 may include, for example, at least one baseband processing unit, where a plurality of chips are disposed on the baseband processing unit. As shown in
The baseband apparatus 93 may further include a network interface 96, configured to exchange information with the radio frequency apparatus 92, where the interface is, for example, a common public radio interface (CPRI for short).
Specifically, the network-side device in this embodiment of this application further includes a program or instructions stored in the memory 95 and capable of running on the processor 94. The processor 94 invokes the program or instructions in the memory 95 to perform each process in the method embodiment in
An embodiment of this application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, each process of the foregoing PDCCH monitoring method embodiment is implemented, with the same technical effect achieved. To avoid repetition, details are not described herein again. The computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disc.
An embodiment of this application further provides a readable storage medium. The readable storage medium stores a program or instructions. When the program or instructions are executed by a processor, each process of the foregoing method embodiment shown in
The processor is a processor in the terminal in the foregoing embodiment. The readable storage medium includes a computer-readable storage medium, for example, a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disc.
In addition, an embodiment of this application provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run a program or instructions to implement each process of the foregoing method embodiment shown in
It should be understood that the chip provided in this embodiment of this application may also be referred to as a system-level chip, a system chip, a chip system, a system-on-chip, or the like.
An embodiment of this application further provides a computer program product. The computer program product is stored in a readable storage medium. The computer program product is executed by at least one processor to implement each process of the foregoing method embodiment in
It should be noted that in this specification, the term “comprise”, “include”, or any of their variants are intended to cover a non-exclusive inclusion, so that a process, a method, an article, or an apparatus that includes a list of elements not only includes those elements but also includes other elements that are not expressly listed, or further includes elements inherent to such process, method, article, or apparatus. In absence of more constraints, an element preceded by “includes a . . . ” does not preclude existence of other identical elements in the process, method, article, or apparatus that includes the element. In addition, it should be noted that the scope of the method and apparatus in the implementations of this application is not limited to performing the functions in an order shown or discussed, and may further include performing the functions in a substantially simultaneous manner or in a reverse order depending on the functions used. For example, the method described may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to some examples may be combined in other examples.
According to the foregoing description of the implementations, a person skilled in the art may clearly understand that the methods in the foregoing embodiments may be implemented by using software in combination with a necessary general hardware platform, and certainly may alternatively be implemented by using hardware. However, in most cases, the former is a preferred implementation. Based on such an understanding, the technical solutions of this application essentially or the part contributing to the prior art may be implemented in a form of a computer software product. The computer software product is stored in a storage medium (such as a ROM/RAM, a magnetic disk, or an optical disc), and includes several instructions for instructing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, a network device, or the like) to perform the methods described in the embodiments of this application.
The embodiments of this application are described above with reference to the accompanying drawings. However, this application is not limited to the foregoing specific embodiments. The foregoing specific embodiments are merely illustrative rather than restrictive. Inspired by this application, a person of ordinary skill in the art can still derive a plurality of variations without departing from the essence of this application and the protection scope of the claims. All these variations shall fall within the protection scope of this application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202110904308.9 | Aug 2021 | CN | national |
This application is a Bypass Continuation Application of PCT International Application No. PCT/CN2022/110264 filed on Aug. 4, 2022, which claims priority to Chinese Patent Application No. 202110904308.9, filed in China on Aug. 6, 2021, which are incorporated herein by reference in their entireties.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2022/110264 | Aug 2022 | WO |
| Child | 18430054 | US |
