WO2023197988A1 - Resource selection and resource pool configuration method and apparatus, device and readable storage medium - Google Patents

Abstract

The present application discloses a resource selection and resource pool configuration method and apparatus, a device and a readable storage medium, which relate to the technical field of communications, and solve the problem that a UE cannot continuously occupy continuous transmission resources in SL mode 2. The method comprises: a higher layer provides a physical layer with a parameter for PSSCH/PSCCH transmission, the parameter comprising a first number which is the number of continuous time units; and the physical layer determines a candidate resource subset according to the first number, and reports the candidate resource subset to the higher layer.

Description

Resource selection and resource pool configuration methods, devices, equipment and readable storage media

Cross-references to related applications

This application claims priority to Chinese Patent Application No. 202210373185.5 filed in China on April 11, 2022, the entire content of which is incorporated herein by reference.

Technical field

The present application relates to the field of communication technology, and in particular, to a transmission resource selection method, device, equipment and readable storage medium.

Background technique

In the New Radio (NR) sidelink (SL), there are two main resource allocation modes for the terminal (User Equipment, UE): mode 1 (mode1) and mode 2 (mode2); among them, In mode1, the base station schedules transmission resources for the UE, and in mode2, the UE independently selects the transmission resources.

In mode2, the UE cannot continue to occupy continuous transmission resources.

Contents of the invention

The embodiments of this application provide a resource selection and resource pool configuration method, device, equipment and readable storage medium to solve the problem that in SL mode2, the UE cannot continue to occupy continuous transmission resources.

In the first aspect, embodiments of this application provide a resource selection method applied to SL UE. The method includes:

The upper layer provides the physical layer with parameters for sidelink data channel (Physical Sidelink Shared Channel, PSSCH)/sidelink control channel (Physical Sidelink Control Channel, PSCCH) transmission, wherein the parameters include a first number, The first number is the number of consecutive time units, the time unit is a time slot or a partial time slot, and the partial time slot is composed of consecutive symbols;

The physical layer determines a subset of candidate resources based on the first quantity, and reports the subset of candidate resources to the higher layer, where the subset of candidate resources includes one or more multi-time unit candidates. Resource (candidate multi-slot resource), the multi-time unit candidate resource is a sub-channel resource of the number of consecutive sub-channels within the first number of consecutive time units, or the multi-time unit candidate resource is the third One or more interlaces within a number of consecutive time units;

The higher layer selects multi-time unit candidate resources for PSSCH/PSCCH transmission from the candidate resource subset.

In the second aspect, embodiments of the present application provide a resource pool configuration method, which is applied in the process of selecting multi-time unit candidate resources, wherein the multi-time unit candidate resources are within a first number of consecutive time units. sub-channel resources of the number of consecutive sub-channels, or the multi-time unit candidate resource is one or more interlaces within the first number of consecutive time units, and the time unit is a time slot or a partial time slot, the partial time slot is composed of consecutive symbols, and the method includes:

Use a bitmap to indicate whether the first number of continuous time units is included in the resource pool, where each bit of the bitmap is used to indicate the first number of continuous time units. unit, the first quantity is determined by the number of time units indicated by each bit; or,

Use first information, second information and third information to indicate whether the first number of consecutive time units is included in the resource pool, wherein the first information is used to indicate a starting time unit, and the second The information is used to indicate the first quantity, the third information is used to indicate a period, and the first quantity is less than or equal to the period.

In the third aspect, embodiments of the present application provide a resource selection device, applied to SL UE, including:

The first module is configured for the upper layer to provide parameters for the transmission of the sidelink data channel PSSCH/sidelink control channel PSCCH to the physical layer, wherein the parameters include a first number, and the first number is a continuous time The number of units, the time unit is a time slot or a partial time slot, and the partial time slot is composed of consecutive symbols;

The second module is configured for the physical layer to determine a subset of candidate resources based on the first quantity, and report the subset of candidate resources to the higher layer, where the subset of candidate resources includes one or more multi-time Unit candidate resources, the multi-time unit candidate resources are sub-channel resources of the number of consecutive sub-channels within the first number of consecutive time units, or the multi-time unit candidate resources are One or more Interlaces within the first number of consecutive time units;

The third module is configured for the higher layer to select multi-time unit candidate resources for PSSCH/PSCCH transmission from the candidate resource subset.

Optionally, the number of continuous time units is determined by the higher layer according to service priority or implementation; or,

The number of continuous time units is determined by the higher layer according to the configuration information of the sidelink resource pool.

Optionally, the configuration information of the sidelink resource pool includes:

The number of consecutive time units used for downlink transmission resources in the sidelink resource pool; or,

The priority of the sidelink data packet to be sent, and the number of consecutive time units corresponding to the priority of the sidelink data packet to be sent.

Optionally, the resource selection device also includes:

The fourth module is configured to use a bitmap to indicate whether the first number of continuous time units is included in the sidelink resource pool, where each bit of the bitmap is used to indicate the first number. of continuous time units, the first number is determined by the number of time units indicated by each of the bits; or, the first information, the second information and the third information are used to indicate whether the first number of continuous time units includes In the sidelink resource pool, wherein the first information is used to indicate a starting time unit, the second information is used to indicate the first quantity, and the third information is used to indicate a period, The first number is less than or equal to the period.

Optionally, the last symbol (symbol) of the last time unit among the first number of consecutive time units is a gap (gap), and other time units do not include symbols for gaps.

Optionally, the second module is also configured to determine a multi-time unit candidate resource set within the selection window, wherein the multi-time unit candidate resource set within the selection window is the selection in the sidelink resource pool. In the time period corresponding to the window, all the sub-channel resources of the number of consecutive sub-channels in the first number of consecutive time units, or the set of multi-time unit candidate resources in the selection window are in the sidelink resource pool Within the time period corresponding to the selection window, all one or more Interlaces within the first number of consecutive time units perform resource exclusion on the multi-time unit candidate resource set within the selection window to obtain a subset of candidate resources. .

Optionally, the second module is further configured such that at least one time unit of the multi-time unit candidate resource within the selection window corresponds to a time unit in which the UE is not monitoring, a possible indication of all If the time unit corresponds to the reservation period configured in the sidelink resource pool, exclude the multi-time unit candidate resource from the multi-time unit candidate resource set within the selection window; or, in the selection All time units of the multi-time unit candidate resources in the window correspond to the time units in which the UE is not monitoring, possibly indicating the corresponding time units of the reservation period configured in the sidelink resource pool. In this case, the multi-time unit candidate resource is excluded from the multi-time unit candidate resource set within the selection window.

Optionally, the second module is also configured to monitor the reserved resources of other UEs through SCI during a time unit of the sensing window when the UE is in the sensing window, and the reserved resources are related to one or more resources within the selection window. When multiple multi-time unit candidate resources overlap, and the DMRS RSRP of the PSCCH carrying the SCI or the corresponding PSSCH is greater than the preset first threshold, the one or more multi-time unit candidate resources are removed from all The multi-time unit candidate resource set within the above selection window is excluded.

Optionally, the second module is also configured to increase the first threshold value when the number of multi-time unit candidate resources included in the candidate resource subset is less than a preset second threshold value. 3dB, and perform resource exclusion on the multi-time unit candidate resource set within the selection window again until the number of multi-time unit candidate resources included in the candidate resource subset is greater than the second threshold value.

Optionally, the resource selection device also includes:

The fifth module is configured for the physical layer to send the SCI through the PSCCH, where the SCI includes resource reservation information for multi-time unit resources used for PSSCH/PSCCH transmission.

Optionally, the resource reservation information for multi-time unit resources used for PSSCH/PSCCH transmission includes:

The number of consecutive time units of the multi-time unit resources used for PSSCH/PSCCH transmission; and,

The time interval between the multi-time unit resource used for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource used for PSSCH/PSCCH transmission.

Optionally, the time interval between the multi-time unit resource used for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource used for PSSCH/PSCCH transmission includes:

The time interval between each time unit in the multi-time unit resource for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource for PSSCH/PSCCH transmission.

In the fourth aspect, embodiments of the present application provide a resource pool configuration device, which is used in the process of resource selection of multi-time unit candidate resources, wherein the multi-time unit candidate resources are within a first number of consecutive time units. sub-channel resources of the number of consecutive sub-channels, or the multi-time unit candidate resource is one or more interlaces within the first number of consecutive time units, and the time unit is a time slot or a partial time slot, The partial time slot consists of consecutive symbols, including:

The first module is configured to use a bitmap to indicate whether the first number of continuous time units are included in the resource pool, wherein each bit of the bitmap is used to indicate the first number of continuous time units. Continuous time units, the first number is determined by the number of time units indicated by each of the bits; or,

The second module is configured to use first information, second information and third information to indicate whether the first number of continuous time units are included in the resource pool, wherein the first information is used to indicate a starting time. unit, the second information is used to indicate the first quantity, the third information is used to indicate a period, and the first quantity is less than or equal to the period.

Optionally, the last symbol of the last time unit among the first number of consecutive time units is gap, and other time units do not include symbols for gap.

In the fifth aspect, embodiments of the present application provide a resource selection device, applied to SL UE, including: a processor and a transceiver;

The processor is configured such that the physical layer determines a candidate resource subset according to the first quantity, and the higher layer selects a multi-time unit candidate resource for PSSCH/PSCCH transmission from the candidate resource subset, wherein the candidate resource subset Including one or more of the multi-time unit candidate resources, the multi-time unit candidate resources are sub-channel resources of the number of consecutive sub-channels within the first number of consecutive time units, or the multi-time unit candidate resources is one or more interlaces within the first number of continuous time units, the first number is the number of continuous time units, the time unit is a time slot or a partial time slot, and the partial time slot is composed of Consisting of consecutive symbols;

The transceiver is configured such that the higher layer provides parameters for PSSCH/PSCCH transmission to the physical layer, wherein the parameters include the first number, and the physical layer uses the candidate resources The subset is reported to the higher level.

Optionally, the number of continuous time units is determined by the higher layer according to service priority or implementation; or,

The number of continuous time units is determined by the higher layer according to the configuration information of the sidelink resource pool.

Optionally, the configuration information of the sidelink resource pool includes:

The number of consecutive time units used for downlink transmission resources in the sidelink resource pool; or,

The priority of the sidelink data packet to be sent, and the number of consecutive time units corresponding to the priority of the sidelink data packet to be sent.

Optionally, the processor is further configured to use a bitmap to indicate whether the first number of consecutive time units is included in the sidelink resource pool, where each bit of the bitmap is used for Indicate the first number of continuous time units, the first number is determined by the number of time units indicated by each of the bits; or, use first information, second information and third information to indicate the first number Whether the continuous time unit is included in the sidelink resource pool, wherein the first information is used to indicate the starting time unit, the second information is used to indicate the first number, and the third The information is used to indicate a period, and the first number is less than or equal to the period.

Optionally, the last symbol of the last time unit among the first number of consecutive time units is gap, and other time units do not include symbols for gap.

Optionally, the processor is further configured to determine a multi-time unit candidate resource set within the selection window, wherein the multi-time unit candidate resource set within the selection window is the selection window in the sidelink resource pool. Within the corresponding time period, all the sub-channel resources of the number of consecutive sub-channels in the first number of consecutive time units, or the multi-time unit candidate resource set within the selection window are all in the sidelink resource pool. Within the time period corresponding to the selection window, all one or more Interlaces within the first number of consecutive time units perform resource elimination on the multi-time unit candidate resource set within the selection window to obtain a subset of candidate resources.

Optionally, the processor is further configured to indicate that at least one time unit of the multi-time unit candidate resource within the selection window corresponds to a time unit in which the UE is not monitoring, which may indicate the In the case of the corresponding time unit of the reservation period configured in the sidelink resource pool, Exclude the multi-time unit candidate resources from the multi-time unit candidate resource set within the selection window; or, all time units of the multi-time unit candidate resources within the selection window correspond to the UE In the case where the time unit in which monitoring is not performed may indicate the corresponding time unit of the reservation period configured in the sidelink resource pool, the multi-time unit candidate resource is removed from the multi-time unit within the selection window. Units are excluded from the candidate resource set.

Optionally, the processor is also configured to monitor the reserved resources of other UEs through SCI during a time unit of the sensing window, and the reserved resources are related to one or more resources within the selection window. When the multi-time unit candidate resources overlap and the DMRS RSRP of the PSCCH carrying the SCI or the corresponding PSSCH is greater than the preset first threshold, the one or more multi-time unit candidate resources are removed from the Multi-time unit candidate resources within the selection window are excluded from the set.

Optionally, the processor is also configured to increase the first threshold by 3dB when the number of multi-time unit candidate resources included in the candidate resource subset is less than a preset second threshold. , and perform resource exclusion on the multi-time unit candidate resource set within the selection window again until the number of multi-time unit candidate resources included in the candidate resource subset is greater than the second threshold value.

Optionally, the transceiver is further configured such that the physical layer sends an SCI through the PSCCH, where the SCI includes resource reservation information for multi-time unit resources used for PSSCH/PSCCH transmission.

Optionally, the resource reservation information for multi-time unit resources used for PSSCH/PSCCH transmission includes:

The number of consecutive time units of the multi-time unit resources used for PSSCH/PSCCH transmission; and,

The time interval between the multi-time unit resource used for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource used for PSSCH/PSCCH transmission.

Optionally, the time interval between the multi-time unit resource used for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource used for PSSCH/PSCCH transmission includes:

The time interval between each time unit in the multi-time unit resource for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource for PSSCH/PSCCH transmission.

In the sixth aspect, embodiments of the present application provide a resource pool configuration device, which is used in the process of resource selection of multi-time unit candidate resources, wherein the multi-time unit candidate resources are within a first number of consecutive time units. sub-channel resources of the number of consecutive sub-channels, or the multi-time unit candidate resource is one or more Interlaces within the first number of consecutive time units, and the first number is the number of consecutive time units, The time unit is a time slot or a partial time slot, and the partial time slot is composed of consecutive symbols, including: a processor and a transceiver;

The transceiver is configured to obtain the first quantity;

The processor is configured to use a bitmap to indicate whether the first number of continuous time units is included in the resource pool, wherein each bit of the bitmap is used to indicate the first number. of continuous time units, the first number is determined by the number of time units indicated by each of the bits; or, the first information, the second information and the third information are used to indicate whether the first number of continuous time units includes In the resource pool, the first information is used to indicate a starting time unit, the second information is used to indicate the first quantity, the third information is used to indicate a period, and the first The quantity is less than or equal to the stated period.

Optionally, the last symbol of the last time unit among the first number of consecutive time units is gap, and other time units do not include symbols for gap.

In a seventh aspect, embodiments of the present application provide a communication device, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is configured to The program in the memory is read to implement the steps in the resource selection method described above, or to implement the steps in the resource pool configuration method described above.

In the eighth aspect, embodiments of the present application provide a readable storage medium for storing a program that, when executed by a processor, implements the steps in the resource selection method described above, or implements the resource pool described above. Steps in the configuration method.

In this embodiment of the present application, the higher layer may provide the physical layer with a first quantity for PSSCH/PSCCH transmission, so that the physical layer can determine a candidate resource subset including multiple multi-time unit candidate resources based on the first quantity, so as to For the upper layer to select multi-time unit candidate resources for PSSCH/PSCCH transmission. Since resource selection obtains multi-time unit candidate resources, the UE can continuously occupy the sidelink channel on the multi-time unit candidate resources. It avoids the use of single-time unit candidate resources (candidate single-slot resource) in related technologies, causing the UE to be unable to sustain The problem of continuously occupying continuous transmission resources; in addition, because the UE uses multi-time unit candidate resources, when performing channel access through the channel monitoring method of Listen Before Talk (LBT), even if the multi-time unit is used, the Failure of LBT monitoring in one time unit of the unit candidate resource will not affect the multi-time unit candidate resource as an overall access channel, improving the success rate of the UE accessing the channel through LBT, and ensuring subsequent multi-time units. The resource reservation success rate of resources reduces the possibility of resource reservation chain breaks.

Description of the drawings

Figure 1 is one of the flow charts of the resource selection method provided by the embodiment of the present application;

Figure 2 is one of the schematic diagrams of configuring the configuration information of the sidelink resource pool in the resource selection method provided by the embodiment of the present application shown in Figure 1;

Figure 3 is a second schematic diagram of configuring the configuration information of the sidelink resource pool in the resource selection method provided by the embodiment of the present application shown in Figure 1;

Figure 4(a) is one of the schematic diagrams of multi-time unit candidate resources in the resource selection method provided by the embodiment of the present application shown in Figure 1;

Figure 4(b) is the second schematic diagram of multi-time unit candidate resources in the resource selection method provided by the embodiment of the present application shown in Figure 1;

Figure 5 is a flow chart of the physical layer determining a subset of candidate resources based on the first number in the resource selection method provided by the embodiment of the present application shown in Figure 1;

Figure 6 is one of the schematic diagrams of resource exclusion for the multi-time unit candidate resource set within the selection window in step 502 shown in Figure 5;

Figure 7 is the second schematic diagram of step 502 shown in Figure 5 for resource exclusion of the multi-time unit candidate resource set within the selection window;

Figure 8 is the third schematic diagram of step 502 shown in Figure 5 for resource exclusion of multi-time unit candidate resource sets within the selection window;

Figure 9 is the fourth schematic diagram of resource exclusion for the multi-time unit candidate resource set within the selection window in step 502 shown in Figure 5;

Figure 10 is a diagram showing a certain time unit LBT monitoring failure of a multi-time unit candidate resource in the resource selection method provided by the embodiment of the present application shown in Figure 1, which does not affect the resource reservation of the multi-time unit candidate resource. Schematic diagram of stay;

Figure 11 is the second flow chart of the resource selection method provided by the embodiment of the present application:

Figure 12 shows the resource selection method provided by the embodiment of the present application shown in Figure 11, setting each time unit of the multi-time unit resources for PSSCH/PSCCH transmission and the next multi-time unit resource for PSSCH/PSCCH transmission. Schematic diagram of the time interval between the first time unit;

Figure 13 is one of the structural schematic diagrams of the resource selection device provided by the embodiment of the present application;

Figure 14 is one of the structural schematic diagrams of the resource pool configuration device provided by the embodiment of the present application;

Figure 15 is the second structural schematic diagram of the resource selection device provided by the embodiment of the present application;

Figure 16 is the second structural schematic diagram of the resource pool configuration device provided by the embodiment of the present application.

Detailed ways

In the embodiment of this application, the term "and/or" describes the association of associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone. these three situations. The character "/" generally indicates that the related objects are in an "or" relationship.

In the embodiments of this application, the term "plurality" refers to two or more than two, and other quantifiers are similar to it.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

In related technology, in SL mode2, the UE uses the sensing-selection mechanism to implement resource selection. Specifically, the UE takes the candidate resources of a single time unit as the granularity and selects resources in the selection window based on the detection results in the sensing window.

However, resource selection based on a single time unit candidate resource as a granularity cannot guarantee that the resources selected by the UE are continuous, resulting in the UE being unable to continuously occupy continuous transmission resources.

In order to improve the above problems, embodiments of the present application provide a resource selection method. Referring to Figure 1, Figure 1 is a flow chart of a resource selection method provided by an embodiment of the present application. In this embodiment, the resource selection method is applied to SL UE. As shown in Figure 1, it includes the following steps:

Step 101: The higher layer provides parameters for PSSCH/PSCCH transmission to the physical layer, where the parameters include a first number, and the first number is the number of continuous time units.

In this embodiment, the time unit may be a time slot or a partial time slot, where a partial time slot is composed of consecutive symbols.

In this embodiment, the number of continuous time units can be determined by two methods:

One is determined by the senior management based on business priority or implementation. Specifically, the upper layer may be the Media Access Control (MAC) layer.

Optionally, parameters used for PSSCH/PSCCH transmission may include:

The resource pool from which resources are reported;

L1 priority prio_TX;

Remaining packet delay budget; and,

The number of subchannels L _subCH used for PSSCH/PSCCH transmission within a time unit, and other parameters.

In order that the parameters for PSSCH/PSCCH transmission can include the number of consecutive time units, the higher layer can provide the following parameters for PSSCH/PSCCH transmission:

-the resource pool from which the resources are to be reported;

-L1 priority,prio_TX;

-the remaining packet delay budget;

-the number of sub-channels to be used for the PSSCH/PSCCH transmission in a slot,LsubCH;

-the number of consecutive slots to be used for the PSSCH/PSCCH transmission, and so on

Among them, "the number of consecutive slots to be used for the PSSCH/PSCCH transmission" is the number indication information of the new continuous time unit. "the resource pool from which the resources are to be reported" refers to the resource pool from which the resources are to be reported. "The remaining packet delay budget" refers to the remaining packet delay budget. "the number of sub-channels to be used for the PSSCH/PSCCH transmission in a slot" refers to the number of sub-channels used for PSSCH/PSCH transmission in the slot.

The other is determined by the higher layer based on the configuration information of the sidelink resource pool. Specifically, the upper layer may be a Radio Resource Control layer (Radio Resource Control, RRC) layer.

In this embodiment, the configuration information of the sidelink resource pool may include:

The number of consecutive time units used by the downlink transmission resources in the sidelink resource pool; or,

The priority of the sidelink data packet to be sent, and the number of consecutive time units corresponding to the priority of the sidelink data packet to be sent.

Optionally, in one example, when the configuration information of the sidelink resource pool is the number of consecutive time units used by the downlink transmission resources in the sidelink resource pool, for example, the resource pool can be Add the following configuration information to the corresponding information unit for configuring sidelink transmission parameters:

-sl-ConsecutiveNumofSlots-r18

At this time, all sidelink transmission resources in the sidelink resource pool use the same number of continuous time units. The higher layer can determine that the number of continuous time units indicated by the configuration information is the number of continuous time units sent to the physical layer. The number of time units.

Alternatively, in the case of the priority of the side link data packet to be sent and the number of consecutive time units corresponding to the priority of the side link data packet to be sent, for example, the side link can be configured for the resource pool. Add the following configuration information to the corresponding information unit of the channel sending parameters:

At this time, the sidelink resource pool is configured with 8 different priorities of sidelink data packets to be sent, and 8 different continuous time units corresponding to the priorities of 8 sidelink data packets to be sent. number. The higher layer can obtain the corresponding number of consecutive time units from the configuration information of the sidelink resource pool according to the priority of the sidelink data packet to be sent by the UE.

The technical solution provided by this embodiment can configure the configuration information of the sidelink resource pool through two methods:

One is to use a bitmap to indicate whether the first number of continuous time units is included in the resource pool, where each bit of the bitmap is used to indicate the first number of continuous time units, and the first number is indicated by each bit. The number of time units is determined.

Illustratively, for example: as shown in Figure 2, a 5-bit bitmap can be used to indicate that the first quantity is Whether the time unit of 2 is included in the sidelink resource pool. As shown in Figure 2, each bit indicates 2 time units. When bit=1, it means that the 2 time units corresponding to the bit are included in the sidelink resource pool. When bit=0, it means that the 2 time units corresponding to the bit are included in the sidelink resource pool. The 2 time units are not included in the sidelink resource pool. At this time, bitmap=11001.

Another method is to use first information, second information and third information to indicate whether the first number of consecutive time units are included in the sidelink resource pool, where the first information is used to indicate the starting time unit, and the The second information is used to indicate the first quantity, the third information is used to indicate the period, and the first quantity is less than or equal to the period.

Specifically, in this embodiment, the first information can be represented by offsets in one or more wireless frames, the second information is a numerical value of a number of consecutive time units, and the third information includes but is not limited to one or more Configure multiple wireless frames in units.

For example, as shown in Figure 3, four consecutive time units marking the first information S=0, the second information L=4, and the third information P=8 indicate that they are included in the sidelink resource pool. , four consecutive time units that are not marked with the above first information, second information, and third information indicate that they are not included in the sidelink resource pool (not shown in the figure).

In the process of configuring the configuration information of the sidelink resource pool, the first number of continuous time units as a whole needs to use the last symbol as a gap without any data mapping for the transceiver conversion of the SL UE. Specifically, in this embodiment, the last symbol of the last time unit among the first number of consecutive time units can be regarded as gap, and other time units do not include symbols for gap. For example: As shown in Figure 2, among the 2 time units indicated by each bit, set the last symbol of the second time unit as gap, and do not set the symbol for gap in the first time unit. Another example: As shown in Figure 3, among the four consecutive time units marked with the first information S=0, the second information L=4, and the third information P=8, the last symbol of the fourth time unit is set to For gap, other time units do not set the symbol for gap.

Based on the above disclosed configuration information method for configuring the sidelink resource pool, the high layer can determine the number of continuous time units based on the number of time units corresponding to each bit in the bitmap shown in Figure 2, or the high layer can determine the number of continuous time units based on, for example, Figure 2 The first information, the second information and the third information shown in 3 determine the number of consecutive time units.

Step 102: The physical layer determines the candidate resource subset according to the first quantity, and assigns the candidate resource subset to The set is reported to the higher level, where the candidate resource subset includes one or more multi-time unit candidate resources, and the multi-time unit candidate resources are sub-channel resources of the number of consecutive sub-channels in the first number of consecutive time units, or multi-time The unit candidate resource is one or more interlaces within a first number of consecutive time units.

In order to enable those skilled in the art to more clearly understand the multi-time unit candidate resources described in this embodiment, below the multi-time unit candidate resources are two consecutive sub-channel resources within two consecutive time units, for example: Figure 4(a ), or the multi-time unit candidate resource is 5 Interlaces within 2 consecutive time units, for example, as shown in Figure 4(b), as an example for explanation.

As shown in Figure 5, in this embodiment, the physical layer determines the candidate resource subset according to the first quantity, which may include:

Step 501: Determine a multi-time unit candidate resource set within the selection window, where the multi-time unit candidate resource set within the selection window is all the first number of consecutive times in the side link resource pool in the time period corresponding to the selection window. The sub-channel resources of the number of consecutive sub-channels within the unit, or the set of multi-time unit candidate resources within the selection window are all the first number of consecutive time units in the time period corresponding to the selection window in the sidelink resource pool. One or more Interlaces.

In this embodiment, a multi-time unit candidate resource R _{x, y} for transmission is defined as a series of continuous L _{subCH sub} -channels (sub-channel, continuous PRB resources) within a continuous L _slot time unit. Assume that the sidelink resource pool is in [n+T ₁ , n+T ₂ ]. The resources of any consecutive L _{subCH sub} -channel within L _slot time units correspond to a multi-time unit candidate resource (candidate multi-slot resource). Among them, [n+T ₁ , n+T ₂ ] is the time period corresponding to the selection window, and L _slot and L _subCH are integers.

Alternatively, in this embodiment, a multi-time unit candidate resource R _x,y for transmission is defined as one or more Interlaces within a series of consecutive L _slot time units. The UE assumes that the sidelink resource pool has one or more interlace resources within any consecutive L _slot time units within [n+T ₁ , n+T ₂ ], corresponding to a multi-time unit candidate resource ( candidate multi-slot resource). Among them, [n+T ₁ ,n+T ₂ ] is the time period corresponding to the selection window, and L _slot is an integer.

Step 502: Execute resources on the multi-time unit candidate resource set within the selection window to obtain a candidate resource subset.

Specifically, step 502 performs resource ranking on the multi-time unit candidate resource set within the selection window. Removal steps may include:

When at least one time unit of the multi-time unit candidate resource within the selection window is a time unit corresponding to a time unit in which the UE is not monitoring, possibly indicating a corresponding time unit of the reservation period configured in the sidelink resource pool , exclude multi-time unit candidate resources from the multi-time unit candidate resource set within the selection window, for example: the situation shown in Figure 6.

Alternatively, all time units of the multi-time unit candidate resources within the selection window correspond to time units in which the UE is not monitoring, possibly indicating corresponding time units of the reservation period configured in the sidelink resource pool. In this case, the multi-time unit candidate resources are excluded from the multi-time unit candidate resource set within the selection window, for example, as shown in Figure 7. It should be noted that in this case, among all the time units of the multi-time unit candidate resources within the selection window, only part of them corresponds to the time units in which the UE is not monitoring, possibly indicating sidelink resources. If the time unit corresponds to the reservation period configured in the pool, the multi-time unit candidate resources are not excluded from the multi-time unit candidate resource set within the selection window, for example, as shown in Figure 8.

Optionally, based on the above resource exclusion of multi-time unit candidate resource sets within the selection window, it also includes:

When the UE monitors the reserved resources of other UEs through SCI in a time unit of the sensing window, the reserved resources overlap with one or more multi-time unit candidate resources within the selection window, and carry the PSCCH of the SCI or the corresponding PSSCH. If the DMRS RSRP is greater than the preset first threshold, the one or more multi-time unit candidate resources are excluded from the multi-time unit candidate resource set within the selection window. In this embodiment, the first threshold The value is Th( _prioRX , _prioTX ). For example: the situation shown in Figure 9.

Optionally, when the number of multi-time unit candidate resources included in the candidate resource subset is less than the preset second threshold, increase the first threshold by 3dB and re-select the multi-time unit candidates within the window. The resource set performs resource exclusion until the number of multi-time unit candidate resources included in the candidate resource subset is greater than the second threshold. In this embodiment, the second threshold value is the percentage of the number of multi-time unit candidate resources included in the candidate resource subset to the multi-time unit candidate resource set within the selection window. At this time, the number of multi-time unit candidate resources included in the candidate resource subset is The number of candidate resources is less than the preset second threshold. Specifically: the number of multi-time unit candidate resources included in the candidate resource subset is less than the number of resources corresponding to the preset second threshold. For example: the second threshold is 20%, select window When the number of multi-time unit candidate resources included in the multi-time unit candidate resource set within is 100, the number of resources corresponding to the second threshold value is 20. At this time, if the number of multi-time unit candidate resources included in the candidate resource subset is is 5 (less than 20), you need to increase the first threshold value by 3dB and perform resource exclusion again; if the candidate resource subset obtained by re-excluding resources includes the number of multi-time unit candidate resources is 10 (less than 20), Then the first threshold needs to be increased by another 3dB, that is, the first threshold needs to be increased by 6dB, and resources are excluded again, and so on, until the number of multi-time unit candidate resources included in the candidate resource subset is greater than or equal to 20.

Step 103: The higher layer selects multi-time unit candidate resources for PSSCH/PSCCH transmission from the candidate resource subset.

In this embodiment of the present application, the higher layer may provide the physical layer with a first quantity for PSSCH/PSCCH transmission, so that the physical layer can determine a candidate resource subset including multiple multi-time unit candidate resources based on the first quantity, so as to For the upper layer to select multi-time unit candidate resources for PSSCH/PSCCH transmission. Since resource selection obtains multi-time unit candidate resources, the UE can continuously occupy the sidelink channel on the multi-time unit candidate resources. This avoids the problem in related technologies that the UE cannot continue to occupy continuous transmission resources due to the use of single-time unit candidate resources (candidate single-slot resources).

In addition, since the UE uses multi-time unit candidate resources, when performing channel access through LBT channel monitoring, even if the LBT monitoring of one time unit of the multi-time unit candidate resources fails, it will not affect the multi-time unit candidate resources. The time unit candidate resources are used as the overall access channel. For example, the situation shown in Figure 10 improves the success rate of UE accessing the channel through LBT, and ensures the success rate of resource reservation for subsequent multi-time unit resources, reducing There is a possibility of resource reservation chain breakage.

Referring to Figure 11, Figure 11 is a flow chart of a resource selection method provided by an embodiment of the present application. The steps of the resource selection method are basically the same as those shown in Figure 1. The difference is that after step 103, it also includes:

Step 104: The physical layer sends the SCI through the PSCCH, where the SCI includes resource reservation information for multi-time unit resources used for PSSCH/PSCCH transmission.

In this embodiment, resource reservation information for multi-time unit resources used for PSSCH/PSCCH transmission may include:

The number of consecutive time units of multi-time unit resources used for PSSCH/PSCCH transmission; and,

The time interval between the multi-time unit resource used for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource used for PSSCH/PSCCH transmission.

This embodiment does not limit the specific setting method of the time interval between the multi-time unit resource used for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource used for PSSCH/PSCCH transmission. In actual use According to business needs, the time interval between the multi-time unit resource used for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource used for PSSCH/PSCCH transmission can be set for PSSCH/PSCCH transmission. The time interval between any one or more time units in the multi-time unit resources and the first time unit of the next multi-time unit resource used for PSSCH/PSCCH transmission.

In order to avoid the problem of resource reservation chain break caused by LBT monitoring failure, in this embodiment, the multi-time unit resource used for PSSCH/PSCCH transmission is the first time unit of the next multi-time unit resource used for PSSCH/PSCCH transmission. The time interval can be set as: the time between each time unit in the multi-time unit resource used for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource used for PSSCH/PSCCH transmission. interval. For example: In the situation shown in Figure 12, the number of consecutive time units of a multi-time unit resource is 2, among which the first time unit is #0 and the second time unit is #1. This multi-time unit resource is the same as the next one. The time interval between the first time unit of a multi-time unit resource is set to: #0 of the current multi-time unit resource (the left box position in Figure 12) and the next multi-time unit resource (the right side of Figure 12) The time interval between #0 of the current multi-time unit resource (the left box position in Figure 12) and the #1 of the next multi-time unit resource (the right box position in Figure 12) time interval between 0.

This embodiment achieves the beneficial effects brought by the technical solution provided by the embodiment shown in Figure 1. Since the resource reservation information of multi-time unit resources for PSSCH/PSCCH transmission can be carried in the SCI, the present disclosure The technical solution provided by the embodiment can reserve resources for multi-time unit resources, and because the multi-time unit resources used for PSSCH/PSCCH transmission can be combined with the first multi-time unit resource used for PSSCH/PSCCH transmission, The time interval between time units is set to the time between each time unit in the multi-time unit resource used for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource used for PSSCH/PSCCH transmission. interval, so that the technical solution provided by the embodiment of the present disclosure can effectively avoid the problem of resource reservation chain breakage due to the failure of LBT monitoring for a certain time unit.

Embodiments of the present application also provide a resource pool configuration method, which is applied in the process of resource selection of multi-time unit candidate resources, where the multi-time unit candidate resources are the number of consecutive sub-channels in the first number of consecutive time units. The sub-channel resource, or the multi-time unit candidate resource is one or more Interlaces within a first number of consecutive time units, the time unit is a time slot or a partial time slot, and the partial time slot is composed of consecutive symbols, and the method includes :

Use a bitmap to indicate whether the first number of continuous time units is included in the resource pool, where each bit of the bitmap is used to indicate the first number of continuous time units, and the first number is the time unit indicated by each bit. The number is determined; or,

Use first information, second information and third information to indicate whether a first number of continuous time units are included in the resource pool, where the first information is used to indicate the starting time unit, and the second information is used to indicate the first quantity, the third information is used to indicate the period, and the first quantity is less than or equal to the period.

Optionally, the last symbol of the last time unit in the first number of consecutive time units is gap, and the symbols used for gap are not included in other time units.

For the specific implementation of the resource pool configuration method provided by the embodiment of the present application, reference can be made to step 101 of the resource selection method shown in Figure 1, which will not be described again here.

This embodiment may configure the resource pool in a form that indicates whether the first number of consecutive time units is included in the resource pool to meet the requirement for resource selection of multi-time unit candidate resources.

Referring to Figure 13, Figure 13 is a schematic structural diagram of a resource selection device provided by an embodiment of the present application. The resource selection device 1300 is applied to SL UE and includes:

The first module 1301 is configured for the upper layer to provide parameters for the transmission of the sidelink data channel PSSCH/sidelink control channel PSCCH to the physical layer, where the parameters include a first number, and the first number is consecutive The number of time units. The time unit is a time slot or a partial time slot. The partial time slot is composed of consecutive symbols.

The second module 1302 is configured for the physical layer to determine a candidate resource subset according to the first quantity, and report the candidate resource subset to the higher layer, where the candidate resource subset includes one or more multiple Time unit candidate resources, the multi-time unit candidate resources are sub-channel resources of the number of consecutive sub-channels within the first number of consecutive time units, or the multi-time unit candidate resources The source is one or more Interlaces within the first number of consecutive time units;

The third module 1303 is configured for the higher layer to select multi-time unit candidate resources for PSSCH/PSCCH transmission from the candidate resource subset.

Optionally, the number of continuous time units is determined by the higher layer according to service priority or implementation; or,

The number of continuous time units is determined by the higher layer according to the configuration information of the sidelink resource pool.

Optionally, the configuration information of the sidelink resource pool includes:

The number of consecutive time units used for downlink transmission resources in the sidelink resource pool; or,

The priority of the sidelink data packet to be sent, and the number of consecutive time units corresponding to the priority of the sidelink data packet to be sent.

Optionally, the resource selection device 1300 also includes:

The fourth module is configured to use a bitmap to indicate whether the first number of continuous time units is included in the sidelink resource pool, where each bit of the bitmap is used to indicate the first number. of continuous time units, the first number is determined by the number of time units indicated by each of the bits; or, the first information, the second information and the third information are used to indicate whether the first number of continuous time units includes In the sidelink resource pool, wherein the first information is used to indicate a starting time unit, the second information is used to indicate the first quantity, and the third information is used to indicate a period, The first number is less than or equal to the period.

Optionally, the last symbol of the last time unit among the first number of consecutive time units is gap, and other time units do not include symbols for gap.

Optionally, the second module 1302 is also configured to determine a multi-time unit candidate resource set within the selection window, wherein the multi-time unit candidate resource set within the selection window is the resource pool described in the sidelink resource pool. In the time period corresponding to the selection window, all sub-channel resources of the number of consecutive sub-channels in the first number of consecutive time units, or a set of multi-time unit candidate resources in the selection window are sidelink resource pools Within the time period corresponding to the selection window in the selection window, all one or more Interlaces within the first number of consecutive time units perform resource exclusion on the multi-time unit candidate resource set within the selection window, and obtain candidate resource sub-sets. set.

Optionally, the second module 1302 is also configured to indicate that at least one time unit of the multi-time unit candidate resource within the selection window corresponds to a time unit in which the UE is not monitoring. If the time unit corresponding to the reservation period configured in the sidelink resource pool is, the multi-time unit candidate resource is excluded from the multi-time unit candidate resource set within the selection window; or, in the All time units of the multi-time unit candidate resources within the selection window are corresponding time units that may indicate the reservation period configured in the sidelink resource pool among the time units when the UE is not monitoring. In the case of , the multi-time unit candidate resource is excluded from the multi-time unit candidate resource set within the selection window.

Optionally, the second module 1302 is also configured to monitor the reserved resources of other UEs through SCI during a time unit of the sensing window when the UE is in the sensing window, and the reserved resources are consistent with one or more resources within the selection window. When multiple multi-time unit candidate resources overlap and the DMRS RSRP of the PSCCH carrying the SCI or the corresponding PSSCH is greater than the preset first threshold, the one or more multi-time unit candidate resources are removed from the Multi-time unit candidate resources within the selection window are excluded from the set.

Optionally, the second module 1302 is also configured to set the first threshold value to Increase 3dB, and perform resource exclusion on the multi-time unit candidate resource set within the selection window again until the number of multi-time unit candidate resources included in the candidate resource subset is greater than the second threshold.

Optionally, the resource selection device 1300 also includes:

The fifth module is configured for the physical layer to send the SCI through the PSCCH, where the SCI includes resource reservation information for multi-time unit resources used for PSSCH/PSCCH transmission.

Optionally, the resource reservation information for multi-time unit resources used for PSSCH/PSCCH transmission includes:

The number of consecutive time units of the multi-time unit resources used for PSSCH/PSCCH transmission; and,

The time interval between the multi-time unit resource used for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource used for PSSCH/PSCCH transmission.

Optionally, the multi-time unit resource used for PSSCH/PSCCH transmission is the same as the next one used for The time interval between the first time unit of multi-time unit resources sent by PSSCH/PSCCH includes:

The time interval between each time unit in the multi-time unit resource for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource for PSSCH/PSCCH transmission.

In this embodiment of the present application, the higher layer may provide a first quantity for PSSCH/PSCCH transmission to the physical layer, so that the physical layer can determine a candidate resource subset including multiple multi-time unit candidate resources based on the first quantity, so as to For the upper layer to select multi-time unit candidate resources for PSSCH/PSCCH transmission. Since resource selection obtains multi-time unit candidate resources, the UE can continuously occupy the sidelink channel on the multi-time unit candidate resources. This avoids the problem in related technologies that the UE cannot continue to occupy continuous transmission resources due to the use of single-time unit candidate resources (candidate single-slot resources).

In addition, since the UE uses multi-time unit candidate resources, when performing channel access through LBT channel monitoring, even if the LBT monitoring of one time unit of the multi-time unit candidate resources fails, it will not affect the multi-time unit candidate resources. The time unit candidate resources are used as the overall access channel. For example, the situation shown in Figure 10 improves the success rate of UE accessing the channel through LBT, and ensures the success rate of resource reservation for subsequent multi-time unit resources, reducing There is a possibility of resource reservation chain breakage.

Referring to Figure 14, Figure 14 is a schematic structural diagram of a resource pool configuration device provided by an embodiment of the present application. The resource pool configuration device 1400 is used in the process of selecting multi-time unit candidate resources, wherein the multi-time unit candidate resources The resource is a sub-channel resource of the number of consecutive sub-channels within the first number of continuous time units, or the multi-time unit candidate resource is one or more interlaces within the first number of continuous time units, and the The time unit is a time slot or a partial time slot, and the partial time slot is composed of consecutive symbols, including:

The first module 1401 is configured to use a bitmap to indicate whether the first number of continuous time units is included in the resource pool, where each bit of the bitmap is used to indicate the first number. of continuous time units, the first number is determined by the number of time units indicated by each bit; or,

The second module 1402 is configured to use first information, second information and third information to indicate whether the first number of continuous time units are included in the resource pool, wherein the first information is used to Indicates a starting time unit, the second information is used to indicate the first quantity, the third information is used to indicate a period, and the first quantity is less than or equal to the period.

Optionally, the last symbol of the last time unit among the first number of consecutive time units is gap, and other time units do not include symbols for gap.

This embodiment may configure the resource pool in a form that indicates whether the first number of consecutive time units is included in the resource pool to meet the requirement for resource selection of multi-time unit candidate resources.

Referring to Figure 15, Figure 15 is a schematic structural diagram of a resource selection device provided by an embodiment of the present application. The resource selection device is applied to SL UE and includes: a processor 1501 and a transceiver 1502;

The processor 1501 is configured such that the physical layer determines a candidate resource subset according to the first number, and the higher layer selects a multi-time unit candidate resource for PSSCH/PSCCH transmission from the candidate resource subset, wherein the candidate resource subset The set includes one or more of the multi-time unit candidate resources, the multi-time unit candidate resources are sub-channel resources of the number of consecutive sub-channels within the first number of consecutive time units, or the multi-time unit candidate resources The resource is one or more interlaces within the first number of consecutive time units, the first number is the number of consecutive time units, the time unit is a time slot or a partial time slot, and the partial time slot Consists of consecutive symbols;

The transceiver 1502 is configured such that the higher layer provides parameters for PSSCH/PSCCH transmission to the physical layer, where the parameters include the first number, and the physical layer uses the candidate resource set subset Report to senior management.

Optionally, the number of continuous time units is determined by the higher layer according to service priority or implementation; or,

The number of continuous time units is determined by the higher layer according to the configuration information of the sidelink resource pool.

Optionally, the configuration information of the sidelink resource pool includes:

The number of consecutive time units used for downlink transmission resources in the sidelink resource pool; or,

The priority of the sidelink data packet to be sent, and the number of consecutive time units corresponding to the priority of the sidelink data packet to be sent.

Optionally, the processor 1501 is also configured to use a bitmap to indicate whether the first number of consecutive time units is included in the sidelink resource pool, where the bitmap Each bit of is used to indicate the first number of continuous time units, and the first number is determined by the number of time units indicated by each of the bits; or, the first information, the second information and the third information are used Indicate whether the first number of consecutive time units is included in the sidelink resource pool, wherein the first information is used to indicate a starting time unit, and the second information is used to indicate the first Quantity, the third information is used to indicate a period, and the first quantity is less than or equal to the period.

Optionally, the last symbol of the last time unit among the first number of consecutive time units is gap, and other time units do not include symbols for gap.

Optionally, the processor 1501 is further configured to determine a multi-time unit candidate resource set within the selection window, where the multi-time unit candidate resource set within the selection window is the selected resource pool in the sidelink resource pool. In the time period corresponding to the window, all the sub-channel resources of the number of consecutive sub-channels in the first number of consecutive time units, or the set of multi-time unit candidate resources in the selection window are in the sidelink resource pool Within the time period corresponding to the selection window, all one or more Interlaces within the first number of consecutive time units perform resource exclusion on the multi-time unit candidate resource set within the selection window to obtain a subset of candidate resources. .

Optionally, the processor 1501 is further configured to: at least one time unit of the multi-time unit candidate resource within the selection window corresponds to a time unit in which the UE is not monitoring, and may indicate that all If the time unit corresponds to the reservation period configured in the sidelink resource pool, exclude the multi-time unit candidate resource from the multi-time unit candidate resource set within the selection window; or, in the selection All time units of the multi-time unit candidate resources in the window correspond to the time units in which the UE is not monitoring, possibly indicating the corresponding time units of the reservation period configured in the sidelink resource pool. In this case, the multi-time unit candidate resource is excluded from the multi-time unit candidate resource set within the selection window.

Optionally, the processor 1501 is also configured to monitor the reserved resources of other UEs through SCI during a time unit of the sensing window when the UE is in the sensing window, and the reserved resources are related to one or more resources within the selection window. When multiple multi-time unit candidate resources overlap, and the DMRS RSRP of the PSCCH carrying the SCI or the corresponding PSSCH is greater than the preset first threshold, the one or more multi-time unit candidate resources are removed from all The multi-time unit candidate resource set within the above selection window is excluded.

Optionally, the processor 1501 is also configured to: at multiple times included in the candidate resource subset When the number of unit candidate resources is less than the preset second threshold, the first threshold is increased by 3dB, and the multi-time unit candidate resource set within the selection window is again excluded until the The number of multi-time unit candidate resources included in the candidate resource subset is greater than the second threshold value.

Optionally, the transceiver 1502 is further configured such that the physical layer sends an SCI through the PSCCH, where the SCI includes resource reservation information for multi-time unit resources used for PSSCH/PSCCH transmission.

Optionally, the resource reservation information for multi-time unit resources used for PSSCH/PSCCH transmission includes:

The number of consecutive time units of the multi-time unit resources used for PSSCH/PSCCH transmission; and,

The time interval between the multi-time unit resource used for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource used for PSSCH/PSCCH transmission.

Optionally, the time interval between the multi-time unit resource used for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource used for PSSCH/PSCCH transmission includes:

The time interval between each time unit in the multi-time unit resource for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource for PSSCH/PSCCH transmission.

In this embodiment of the present application, the higher layer may provide the physical layer with a first quantity for PSSCH/PSCCH transmission, so that the physical layer can determine a candidate resource subset including multiple multi-time unit candidate resources based on the first quantity, so as to For the upper layer to select multi-time unit candidate resources for PSSCH/PSCCH transmission. Since resource selection obtains multi-time unit candidate resources, the UE can continuously occupy the sidelink channel on the multi-time unit candidate resources. This avoids the problem in related technologies that the UE cannot continue to occupy continuous transmission resources due to the use of single-time unit candidate resources (candidate single-slot resources).

In addition, since the UE uses multi-time unit candidate resources, when performing channel access through LBT channel monitoring, even if the LBT monitoring of one time unit of the multi-time unit candidate resources fails, it will not affect the multi-time unit candidate resources. The time unit candidate resources are used as the overall access channel, for example: the situation shown in Figure 10 improves the success rate of the UE accessing the channel through the LBT method, and Moreover, the success rate of resource reservation for subsequent multi-time unit resources is guaranteed, and the possibility of resource reservation chain breaks is reduced.

Referring to Figure 16, Figure 16 is a schematic structural diagram of a resource pool configuration device provided by an embodiment of the present application. The resource pool configuration device is used in the process of resource selection of multi-time unit candidate resources, wherein the multi-time unit candidate resources The sub-channel resources are the number of consecutive sub-channels within the first number of continuous time units, or the multi-time unit candidate resources are one or more Interlaces within the first number of continuous time units, and the first The number is the number of consecutive time units, and the time unit is a time slot or a partial time slot. The partial time slot is composed of consecutive symbols, including: a processor 1601 and a transceiver 1602;

The transceiver 1602 is configured to obtain the first quantity;

The processor 1601 is configured to use a bitmap to indicate whether the first number of continuous time units is included in the resource pool, where each bit of the bitmap is used to indicate the first A number of continuous time units, the first number is determined by the number of time units indicated by each of the bits; or, the first information, the second information and the third information are used to indicate whether the first number of continuous time units Contained in the resource pool, wherein the first information is used to indicate a starting time unit, the second information is used to indicate the first quantity, the third information is used to indicate a period, and the third information is used to indicate a period. An amount less than or equal to the period.

Optionally, the last symbol of the last time unit among the first number of consecutive time units is gap, and other time units do not include symbols for gap.

This embodiment may configure the resource pool in a form that indicates whether the first number of consecutive time units is included in the resource pool to meet the requirement for resource selection of multi-time unit candidate resources.

An embodiment of the present application also provides a communication device, including: a transceiver, a memory, a processor, and a program stored in the memory and executable on the processor. When the processor executes the program, the above-mentioned resources are realized. Select the steps in the method, or implement the steps in the resource pool configuration method described above.

It should be noted that the division of units in the embodiment of the present application is schematic and is only a logical function division. In actual implementation, there may be other division methods. In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated units are both It can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or contributes to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to cause a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in various embodiments of the application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code. .

Embodiments of the present application also provide a readable storage medium. A program is stored on the readable storage medium. When the program is executed by a processor, the step embodiments of the above-described resource selection method or the above-described resource pool configuration method are implemented. Each process can achieve the same technical effect. To avoid repetition, we will not go into details here. Wherein, the readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic memory (such as floppy disk, hard disk, magnetic tape, magneto-optical disk (Magneto-Optical Disk, MO) etc.), optical storage (such as Compact Disk (CD), Digital Versatile Disc (DVD), Blu-ray Disc (BD), High-Definition Versatile Disc (HVD), etc. ), and semiconductor memories (such as Read-Only Memory (ROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (Electrically Erasable Programmable) read only memory (EEPROM), non-volatile memory (NAND FLASH), solid state drive (Solid State Disk or Solid State Drive, SSD), etc.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element.

Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation. According to this understanding, the technical solution of the present application can be embodied in the form of a software product in essence or that contributes to the existing technology. The computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk). ), includes several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Inspired by this application, many forms can be made without departing from the purpose of this application and the scope protected by the claims, all of which fall within the protection of this application.

Claims (20)

1. A resource selection method, applied to sidelink terminal SL UE, the method includes:

   The upper layer provides parameters for the transmission of the sidelink data channel PSSCH/sidelink control channel PSCCH to the physical layer, where the parameters include a first number, and the first number is the number of continuous time units, so The time unit is a time slot or a partial time slot, and the partial time slot is composed of consecutive symbols;

   The physical layer determines a subset of candidate resources according to the first quantity, and reports the subset of candidate resources to the higher layer, where the subset of candidate resources includes one or more multi-time unit candidate resources, The multi-time unit candidate resources are sub-channels of the number of consecutive sub-channels within the first number of consecutive time units, or the multi-time unit candidate resources are one or more of the first number of consecutive time units. Multiple Interlace;

   The higher layer selects multi-time unit candidate resources for PSSCH/PSCCH transmission from the candidate resource subset.
2. The method of claim 1, wherein,

   The number of continuous time units is determined by the higher layer according to business priority or implementation; or,

   The number of continuous time units is determined by the higher layer according to the configuration information of the sidelink resource pool.
3. The method according to claim 2, wherein the configuration information of the sidelink resource pool includes:

   The number of consecutive time units used for downlink transmission resources in the sidelink resource pool; or,

   The priority of the sidelink data packet to be sent, and the number of consecutive time units corresponding to the priority of the sidelink data packet to be sent.
4. The method according to claim 2, wherein the method for configuring the configuration information of the sidelink resource pool includes:

   A bitmap is used to indicate whether the first number of consecutive time units is included in the sidelink resource pool, where each bit of the bitmap is used to indicate the first A number of consecutive time units, the first number being determined by the number of time units indicated by each of the bits; or,

   using first information, second information and third information to indicate whether the first number of consecutive time units are included in the sidelink resource pool, wherein the first information is used to indicate a starting time unit, The second information is used to indicate the first quantity, the third information is used to indicate a period, and the first quantity is less than or equal to the period.
5. The method of claim 4, wherein

   The last symbol symbol of the last time unit in the first number of consecutive time units is a gap, and other time units do not include symbols for gaps.
6. The method according to claim 1, wherein the physical layer determines a subset of candidate resources according to the first quantity, including:

   Determine a multi-time unit candidate resource set within the selection window, wherein the multi-time unit candidate resource set within the selection window is all the first number of resources in the side link resource pool within the time period corresponding to the selection window. The number of consecutive sub-channels within the continuous time unit, or the multi-time unit candidate resource set within the selection window is all the first-th-th sub-channels in the time period corresponding to the selection window in the sidelink resource pool. One or more interlaces within a number of consecutive time units;

   Resource elimination is performed on the multi-time unit candidate resource set within the selection window to obtain a candidate resource subset.
7. The method according to claim 6, wherein the resource exclusion of the multi-time unit candidate resource set within the selection window includes:

   At least one time unit of the multi-time unit candidate resource within the selection window corresponds to the time unit in which the UE is not monitoring, possibly indicating the reservation period configured in the sidelink resource pool. In the case of corresponding time units, exclude the multi-time unit candidate resources from the multi-time unit candidate resource set within the selection window; or,

   All time units of the multi-time unit candidate resources within the selection window correspond to the time units in which the UE is not monitoring, possibly indicating the reservation period configured in the sidelink resource pool. If corresponding to a time unit, the multi-time unit candidate resource is excluded from the multi-time unit candidate resource set within the selection window.
8. The method according to claim 7, wherein the resource exclusion of the multi-time unit candidate resource set within the selection window further includes:

   When the UE monitors the reserved resources of other UEs through sidelink control information SCI in a time unit of the sensing window, the reserved resources occur with one or more multi-time unit candidate resources within the selection window. Overlap, and the reference signal received power RSRP of the PSCCH carrying the SCI or the corresponding PSSCH demodulation reference signal DMRS is greater than the preset first threshold value, the one or more multi-time unit candidate resources are removed from Multi-time unit candidate resources within the selection window are excluded from the set.
9. The method according to claim 8, wherein the resource exclusion of the multi-time unit candidate resource set within the selection window further includes:

   When the number of multi-time unit candidate resources included in the candidate resource subset is less than the preset second threshold, increase the first threshold by 3dB, and re-select the multi-time unit candidate resources within the selection window. The unit candidate resource set performs resource elimination until the number of multi-time unit candidate resources included in the candidate resource subset is greater than the second threshold.
10. The method according to claim 1, wherein after the higher layer selects multi-time unit candidate resources for PSSCH/PSCCH transmission from the candidate resource subset, it further includes:

    The physical layer sends SCI through the PSCCH, where the SCI includes resource reservation information for multi-time unit resources used for PSSCH/PSCCH transmission.
11. The method according to claim 10, wherein the resource reservation information of multi-time unit resources for PSSCH/PSCCH transmission includes:

    The number of consecutive time units of multi-time unit resources used for PSSCH/PSCCH transmission; and,

    The time interval between the multi-time unit resource used for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource used for PSSCH/PSCCH transmission.
12. The method according to claim 11, wherein the time interval between the multi-time unit resource for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource for PSSCH/PSCCH transmission includes:

    The time interval between each time unit in the multi-time unit resource for PSSCH/PSCCH transmission and the first time unit of the next multi-time unit resource for PSSCH/PSCCH transmission.
13. A resource pool configuration method applied in the process of resource selection for multi-time unit candidate resources, wherein the multi-time unit candidate resources are sub-channels of the number of consecutive sub-channels within a first number of consecutive time units, Or the multi-time unit candidate resource is one or more interlaces within the first number of consecutive time units, the time unit is a time slot or a partial time slot, and the partial time slot is composed of consecutive symbols, The methods include:

    A bitmap is used to indicate whether the first number of continuous time units is included in the resource pool, wherein each bit of the bitmap is used to indicate the first number of continuous time units, and the The first quantity is determined by the number of time units indicated by each bit; or,

    Use first information, second information and third information to indicate whether the first number of consecutive time units is included in the resource pool, wherein the first information is used to indicate a starting time unit, and the second The information is used to indicate the first quantity, the third information is used to indicate a period, and the first quantity is less than or equal to the period.
14. The method of claim 13, wherein

    The last symbol symbol of the last time unit in the first number of consecutive time units is a gap, and other time units do not include symbols for gaps.
15. A resource selection device, applied to SL UE, including

    The first module is configured for the upper layer to provide parameters for the transmission of the sidelink data channel PSSCH/sidelink control channel PSCCH to the physical layer, wherein the parameters include a first number, and the first number is a continuous time The number of units, the time unit is a time slot or a partial time slot, and the partial time slot is composed of consecutive symbols;

    The second module is configured for the physical layer to determine a subset of candidate resources based on the first quantity, and report the subset of candidate resources to the higher layer, where the subset of candidate resources includes one or more multi-time Unit candidate resources, the multi-time unit candidate resources are sub-channel resources of the number of consecutive sub-channels within the first number of continuous time units, or the multi-time unit candidate resources are the first number of continuous times One or more interlaces within a unit;

    The third module is configured for the higher layer to select multi-time unit candidate resources for PSSCH/PSCCH transmission from the candidate resource subset.
16. A resource pool configuration device used in the process of resource selection of multi-time unit candidate resources, wherein the multi-time unit candidate resources are within a first number of consecutive time units. sub-channel resources of the number of consecutive sub-channels, or the multi-time unit candidate resource is one or more interlaces within the first number of consecutive time units, and the time unit is a time slot or a partial time slot, so The above-mentioned part of the time slot consists of consecutive symbols, including:

    The first module is configured to use a bitmap to indicate whether the first number of continuous time units are included in the resource pool, wherein each bit of the bitmap is used to indicate the first number of continuous time units. Continuous time units, the first number is determined by the number of time units indicated by each of the bits; or,

    The second module is configured to use first information, second information and third information to indicate whether the first number of continuous time units are included in the resource pool, wherein the first information is used to indicate a starting time. unit, the second information is used to indicate the first quantity, the third information is used to indicate a period, and the first quantity is less than or equal to the period.
17. A resource selection device, applied to SL UE, including: a processor and a transceiver; wherein,

    The processor is configured such that the physical layer determines a candidate resource subset according to the first quantity, and the higher layer selects a multi-time unit candidate resource for PSSCH/PSCCH transmission from the candidate resource subset, wherein the candidate resource subset Including one or more of the multi-time unit candidate resources, the multi-time unit candidate resources are sub-channel resources of the number of consecutive sub-channels within the first number of consecutive time units, or the multi-time unit candidate resources is one or more interlaces within the first number of continuous time units, the first number is the number of continuous time units, the time unit is a time slot or a partial time slot, and the partial time slot is composed of Consisting of consecutive symbols;

    The transceiver is configured such that the higher layer provides parameters for PSSCH/PSCCH transmission to the physical layer, wherein the parameters include the first number, and the physical layer reports the candidate resource subset to Said high-rise.
18. A resource pool configuration device used in the process of resource selection for multi-time unit candidate resources, wherein the multi-time unit candidate resources are sub-channel resources with a number of consecutive sub-channels within a first number of consecutive time units. , or the multi-time unit candidate resource is one or more interlaces within the first number of continuous time units, the first number is the number of continuous time units, and the time unit is a time slot or a part A time slot, the partial time slot is composed of consecutive symbols, including: a processor and a transceiver;

    The transceiver is configured to obtain the first quantity;

    The processor is configured to use a bitmap to indicate whether the first number of continuous time units is included in the resource pool, wherein each bit of the bitmap is used to indicate the first number. of continuous time units, the first number is determined by the number of time units indicated by each of the bits; or, the first information, the second information and the third information are used to indicate whether the first number of continuous time units includes In the resource pool, the first information is used to indicate a starting time unit, the second information is used to indicate the first quantity, the third information is used to indicate a period, and the first The quantity is less than or equal to the stated period.
19. A communication device, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; wherein the processor is used to read the program in the memory to implement the following: The steps in the resource selection method described in any one of claims 1-12, or the steps in the resource pool configuration method described in claims 13 or 14.
20. A readable storage medium used to store a program, wherein when the program is executed by a processor, the steps in the resource selection method as described in any one of claims 1-12 are implemented, or the steps of claim 13 or Steps in the resource pool configuration method described in 14.