Feedback resource determination method, communication node, and storage medium

Abstract

This application provides a feedback resource determination method, a communication node, and a storage medium. The feedback resource determination method involves determining a first feedback resource set corresponding to each subband in each resource block set included in a data resource pool, wherein the first feedback resource set includes at least one feedback resource, and the feedback resource includes K exclusive PRBs that are positive integers; determining a second feedback resource set according to the subband information and resource block set information of the received data, wherein the second feedback resource set includes at least one first feedback resource set; determining one feedback resource in the second feedback resource set, and transmitting physical sidelink feedback information via N shared PRBs that are positive integers and the one feedback resource.

Description

Technical Field

[0001] This application relates to the technical field of wireless communication, for example, a feedback resource determination method, a communication node, and a storage medium.

Background Art

[0002] When communicating in a license-free spectrum, in some regions, there are requirements for the Occupied Channel Bandwidth (OCB) and the Power Spectral Density (PSD), that is, the occupied channel bandwidth of the device must satisfy at least 80% of the channel access mechanism (Listen Before Talk, LBT) channel bandwidth (20M), and the transmission power of the device within the specified bandwidth must not exceed the PSD (such as 10 mw / MHZ) limit.

[0003] When a SideLink (SL) device transmits on the Physical Sidelink Feedback Channel (PSFCH), the transmission format of the SL PSFCH format of the conventional New Radio Release-16 / Release-17 (NR Rel-16 / Rel-17) cannot meet the OCB requirements. There is a need for a PSFCH feedback resource determination method that can ensure that the OCB requirements are always met during the PSFCH transmission process of the SL device.

Summary of the Invention

[0004] This application provides a feedback resource determination method, a communication node, and a storage medium.

[0005] In an embodiment of this application, A feedback resource determination method applied to a first node, wherein The process includes determining a first feedback resource set corresponding to each subband in each resource block set included in the data resource pool, wherein the first feedback resource set includes at least one feedback resource, and the feedback resource includes K exclusive physical resource blocks (PRBs) that are a positive integer; determining a second feedback resource set according to the subband information and resource block set information of the received data, wherein the second feedback resource set includes at least one first feedback resource set; determining one feedback resource in the second feedback resource set and transmitting physical sidelink feedback information via N shared PRBs that are a positive integer and the one feedback resource; This provides a method for determining feedback resources.

[0006] In this embodiment of the present invention, the system comprises a memory, a processor, and a computer program stored in the memory and operable by the processor. When the program is executed by the processor, the above-described feedback resource determination method is realized. We will provide more communication nodes.

[0007] In the embodiment of the present invention, when a computer program is stored and executed by a processor, the above-described feedback resource determination method is realized. Further computer-readable storage media will be provided. [Brief explanation of the drawing]

[0008] [Figure 1] This is a schematic diagram of the resource distribution according to one embodiment. [Figure 2] This is a schematic diagram of the feedback resource distribution of a PSFCH according to one embodiment. [Figure 3] This is a flowchart of a feedback resource determination method according to one embodiment. [Figure 4] This is a schematic diagram illustrating the grouping of PRBs usable for PSFCH transmission according to one embodiment. [Figure 5] This is another schematic diagram that groups the PRBs usable for PSFCH transmission according to one embodiment. [Figure 6] This is a schematic diagram illustrating the determination of feedback resources in one embodiment. [Figure 7] This is another schematic diagram showing how to determine the feedback resources in one embodiment. [Figure 8] This is a further schematic diagram showing how to determine the feedback resources in one embodiment. [Figure 9] This is a schematic diagram illustrating the puncturing of a shared PRB according to one embodiment. [Figure 10] This is another schematic diagram illustrating the puncturing of a shared PRB according to one embodiment. [Figure 11] This is a schematic diagram illustrating the feedback of 2-bit HARQ information using PSFCH format2 according to one embodiment. [Figure 12] This is a schematic diagram illustrating the division of the PSFCH interleaving frequencies in one embodiment into two groups. [Figure 13] This is a schematic diagram illustrating how ACK and NACK feedback are performed by dividing the PSFCH interleaving frequency into two groups according to one embodiment. [Figure 14] This is a schematic diagram of the structure of a feedback resource determination device according to one embodiment. [Figure 15] This is a schematic diagram of the hardware structure of a communication node according to one embodiment. [Modes for carrying out the invention]

[0009] The present application will be described below with reference to the drawings and embodiments. The specific embodiments described herein are for the purpose of interpreting the present application. For the sake of clarity, only the parts relevant to the present application are shown in the drawings.

[0010] In New Radio in Unlicensed Spectrum (NR-U) in the unlicensed frequency band, M consecutive interleaves are defined on the carrier wave. Resource blocks (RBs) within each interleave are distributed at equal intervals, and different interleaves are distributed in a comb-like pattern in the frequency domain, numbered from 0 to M-1. In the frequency domain, within a certain bandwidth (Bandwidth Part, BWP), N consecutive resource block sets (RB Sets) are also defined, numbered from 0 to N-1. Figure 1 is a schematic diagram of the resource distribution according to one embodiment. As shown in Figure 1, one resource block set (RB Set) is approximately 20M and corresponds to one LBT (Listen Before Talk) bandwidth. A user equipment (UE) transmits data using one interleave on at least one RB Set, that is, it can maximize the transmission power of the UE while satisfying the requirements of both OCB and PSD. When specifying a data resource, NR-U employs a two-stage specification method called X+Y, where X represents the interleaves used by the Physical Uplink Sidelink Channel (PUSCH) resource, and Y represents the consecutive RB Sets used by the PUSCH resource. Based on these, the terminal can determine the resource location within the BWP of the data according to the specification information.

[0011] Sidelink communication supports unicast, multicast, and broadcast. For unicast and multicast, the 3rd Generation Partnership Project (3GPP®) protocol supports the activation of Hybrid Automatic Repeat Quest (HARQ) feedback. For unicast, it supports Acknowledgement (ACK) / Non-Acknowledgement (NACK) feedback, and for multicast, it supports both Nack Only feedback and ACK / NACK feedback by group members. Regardless of the feedback method, the PSFCH feedback resource corresponding to each Physical Sidelink Shared Channel (PSSCH) of a receiving UE is uniquely determined according to configured and pre-configured signaling and predefined rules. In the frequency domain, PSFCH transmission is carried out over 1PRB.

[0012] To give an example of unicast, assuming SL HARQ feedback is enabled, the receiving UE provides feedback for each PSSCH transmission from the transmitting UE using a uniquely determined feedback resource. The method for determining the PSFCH feedback resource is as follows: First, the UE determines the slot in the SL communication resource pool where the feedback resource resides, based on the period of the configured or pre-configured PSFCH. This feedback slot is the PSFCH slot closest to the PSSCH and satisfies the minimum feedback delay. The system transmits unicast or multicast attributes of the data depending on the time-frequency position of the PSSCH transmission, and the receiving UE maps them within the PSFCH slot to uniquely determine a corresponding set of feedback resources. Here, a single set of feedback resources contains multiple feedback resources, and the final feedback resource for each receiving UE is jointly determined by the source ID of the transmitting UE and the member ID of the receiving UE. For each send / receive link requiring feedback, the receiving UE will uniquely determine one feedback resource within a set of feedback resources, depending on the resource pool configuration.

[0013] In an SL-U, when an SL device transmits a PSFCH, each RB Set on the symbol transmitting the PSFCH has one shared interleaved PRB and K exclusive PRBs. Figure 2 is a schematic diagram of the PSFCH feedback resource distribution according to one embodiment. As shown in Figure 2, taking the example of K=1, each UE transmits a signal simultaneously using the shared interleaved PRB and its own exclusive PRB resources when transmitting a PSFCH. A method for determining PSFCH feedback resources is needed that can guarantee that the OCB requirement is always met during the PSFCH transmission process of the SL device.

[0014] In conventional NR SL, when transmitting the PSFCH of 1 PRB in the frequency domain, the maximum transmission power of the UE can be fully utilized. When the device uses K exclusive PRBs to transmit the PSFCH, between the K PRBs, due to the PSD limitation, the PSFCH transmission performance of the UE may be restricted. Therefore, a feedback resource determination method for determining K exclusive PRBs in the frequency domain to ensure the transmission performance of the PSFCH is required.

[0015] Also, when the UE transmits the PSFCH using one shared interleaving and K exclusive PRBs, due to the PSD limitation, the power of the PSFCH is likely to be affected by the shared interleaving or PSD limitation. When the exclusive PRB of the PSFCH and the shared interleaving are within 1M, in order to ensure the power of the exclusive PRB, it is selected to drop the PRBs on the shared interleaving within the 1M. However, dropping the PRBs on the shared interleaving may cause the final UE transmission bandwidth not to meet the OCB requirement. Therefore, to ensure that the PSFCH transmission of the device always meets the OCB requirement, it is necessary to determine whether the shared PRBs can be punctured.

[0016] FIG. 3 is a flowchart of a feedback resource determination method according to an embodiment. The method is applicable to a first node, and the first node may be a communication node that receives data, such as a UE. As shown in FIG. 3, the method according to this embodiment includes S110, S120, and S130.

[0017] In S110, a first feedback resource set corresponding to each sub-band is determined in each resource block set included in the data resource pool. At least one feedback resource is included in the first feedback resource set, and K exclusive PRBs, which are positive integers, are included in the feedback resource.

[0018] In S120, a second feedback resource set is determined according to the subband information and resource block set information of the received data, and the second feedback resource set includes at least one first feedback resource set.

[0019] In S130, one feedback resource is determined in the second feedback resource set, and physical sidelink feedback information is transmitted via N shared PRBs, which are positive integers, and the one feedback resource.

[0020] In this embodiment, one subband in one RB Set of the data resource pool corresponds to one first feedback resource set in that RB set, the first feedback resource set contains at least one feedback resource, the feedback resource contains K exclusive PRBs, and the second feedback resource set contains at least one first feedback resource set. Subband information may include the index and number of subbands, and resource block set information may include the index, number, and mapping relationship between resource block sets and subbands of resource block sets. Determining one feedback resource in the second feedback resource set means determining K exclusive PRBs in the second feedback resource set. SL equipment (e.g., UE) can transmit physical sidelink feedback information via N shared PRBs and K exclusive PRBs. To avoid the UE's PSFCH transmission performance being limited by PSD limitations, the frequency domain distance between the K exclusive PRBs can be set to exceed 1 MHz.

[0021] In one embodiment, the N shared PRBs are N PRBs included in one interleaving in one pre-defined, pre-configured or configured data resource block set, or the N shared PRBs are N PRBs in a data resource block set determined according to a pre-defined, pre-configured or configured bitmap.

[0022] In one embodiment, the method further includes grouping the PRBs available for transmitting physical sidelink feedback information other than the shared PRBs in each resource block set, grouping them into groups of K PRBs each, and using the remaining less than K PRBs for transmitting physical sidelink feedback information.

[0023] In one embodiment, grouping the PRBs available for transmitting physical sidelink feedback information other than the shared PRBs in each resource block set includes, for the PRBs available for transmitting physical sidelink feedback information other than the shared PRBs in each resource block set, dividing the ungrouped PRBs within one interleaving into groups of K PRBs each in the order of PRB indices according to the interleaving index, and grouping the resources of the remaining X PRBs within the interleaving and the Y PRBs in the next interleaving into one group, where X < K, Y < K, and X + Y = K.

[0024]

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[0026] In one embodiment, determining one feedback resource in the second feedback resource set This includes determining one group of PRBs from the second feedback resource set as the K exclusive PRBs according to the resource determination rules.

[0027] In one embodiment, the method is The further details include dividing the PRBs available for transmitting physical sidelink feedback information other than shared PRBs in each resource block set into K groups of equal number according to the PRB index order, and not using the remaining K or fewer PRBs for transmitting physical sidelink feedback information.

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[0030] In one embodiment, determining one feedback resource in the second feedback resource set means that This includes determining one feedback resource from the second feedback resource set according to the resource determination rule, ultimately determining K PRBs, and making these K exclusive PRBs.

[0031]

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[0032] In one embodiment, the resource determination rule includes determining K PRBs or 1 PRB based on the resource identifier in the received data, the number of cyclic shift pairs set or pre-configured by the system, the member identifier of the data receiving node, and the number of feedback resources in the second feedback resource set or the number of PRBs within the group of the second feedback resource set.

[0033] In one embodiment, the method further includes puncturing a shared PRB that satisfies a specific condition if the bandwidth between any of the shared PRBs in the resource block set and any of the exclusive PRBs among the K exclusive PRBs is less than a set threshold.

[0034] Here, puncturing may include setting the transmit power of the PRB to 0, or not mapping any data, signals, or channels onto the PRB.

[0035] In one embodiment, the subcarrier spacing (SCS) is a first value, the nth interleave in the resource block set is a shared PRB, and the number of shared PRBs in the resource block set for the nth interleave is a specified value, If the PRB with the highest index among the K exclusive PRBs contains the 85+nth PRB, the 90+nth shared PRB is held without puncturing, n≧1 and n≦10; if the PRB with the highest index among the K exclusive PRBs contains the 86+nth PRB, the 90+nth shared PRB is held without puncturing, n≧1 and n≦10; and if the PRB with the highest index among the K exclusive PRBs contains the 87+nth PRB, the 90+nth shared PRB is held without puncturing, n≧1 and n≦10 A certain method, where the 5+nth PRB is included in the PRB with the smallest index among the K exclusive PRBs, the nth shared PRB is held without puncturing, n≧1 and n≦10; a method where the 4+nth PRB is included in the PRB with the smallest index among the K exclusive PRBs, the nth shared PRB is held without puncturing, n≧1 and n≦10; a method where the 3+nth PRB is included in the PRB with the smallest index among the K exclusive PRBs, the nth shared PRB is held without puncturing, n≧1 and n≦10; Accordingly, shared PRBs that do not meet the aforementioned specific conditions will not be punctured.

[0036] In one embodiment, SCS is a second value, the x-th interleave in the resource block set is a shared interleave, and the number of shared PRBs on the resource block set for the x-th interleave is a specified value, If the PRB with the highest index among the K exclusive PRBs contains the 43+m PRB, then the 45+m shared PRB is held without puncturing, and x≧1 and x≦5; and if the PRB with the lowest index among the K exclusive PRBs contains the 2+m PRB, then the m shared PRB is held without puncturing, and x≧1 and x≦5. Accordingly, shared PRBs that do not meet the aforementioned specific conditions will not be punctured.

[0037] The following provides an illustrative example of the feedback resource determination method described above.

[0038] If the PSFCH's feedback resources exceed 1 PRB, the feedback resource determination process is as follows:

[0039] When a UE transmits PSFCH using shared interleaved PRBs and exclusive PRBs in an SL-U, the transmitted power within a 1 MHz bandwidth must not exceed the PSD limit. Therefore, the UE may use multiple exclusive PRBs in the frequency domain to transmit PSFCH, and the frequency domain distance between multiple exclusive PRBs exceeds 1 MHz.

[0040] Appearance 1: Within an RB Set, grouping is performed on other PRBs available for PSFCH transmission, excluding shared interleaved PRBs. The grouping method follows the interleaved index, dividing each interleaved PRB into groups of K. The resources of the remaining less than K PRBs within the interleaved and the next available PRBs in the interleaved are then grouped together, and this process continues until the end.

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[0044] Each RB Set adheres to the grouping and mapping rules described above.

[0045] Figure 4 is a schematic diagram of grouping PRBs usable for PSFCH transmission according to one embodiment. As shown in Figure 4, SCS = 30k, and RB Set k contains 50 PRBs, assuming K = 5.

[0046] According to the interleave index, the first five PRBs on interleave 1 become the feedback resources for the first group, the last five PRBs on interleave 1 become the feedback resources for the second group, the first five PRBs on interleave 2 become the feedback resources for the third group, the last five PRBs on interleave 2 become the feedback resources for the fourth group, the first five PRBs on interleave 3 become the feedback resources for the fifth group, the last five PRBs on interleave 3 become the feedback resources for the sixth group, the first five PRBs on interleave 4 become the feedback resources for the seventh group, and the last five PRBs on interleave 4 become the feedback resources for the eighth group.

[0047] Figure 5 is another schematic diagram of grouping PRBs available for PSFCH transmission according to one embodiment. As shown in Figure 5, SCS = 30k, and RB Set k contains 50 PRBs, assuming K = 7.

[0048] According to the interleave index, the first seven PRBs on interleave 1 become the feedback resources for the first group, the last three PRBs on interleave 1 and the first four PRBs on interleave 2 become the feedback resources for the second group, the last six PRBs on interleave 2 and the first PRB on interleave 3 become the feedback resources for the third group, the second through eighth PRBs on interleave 3 become the feedback resources for the fourth group, and the last two PRBs on interleave 3 and the first five PRBs on interleave 4 become the feedback resources for the fifth group.

[0049] The last five PRBs on interleaved 4 are the remaining PRBs and are not used for PSFCH transmission.

[0050] Appearance 2:

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[0051] After the receiving UE determines a PRB within a PRB group, PRB resources at the same location in other groups also simultaneously become exclusive resources of the receiving UE's PSFCH, ultimately determining the K exclusive resources of the receiving device.

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[0054] Each RB Set adheres to the grouping and mapping rules described above.

[0055] Figure 6 is a schematic diagram for determining feedback resources in one embodiment. As shown in Figure 6, SCS = 30k, the RB Set contains 50 PRBs, and K = 2 is assumed.

[0056] Excluding the 10 shared PRBs within RB Set k, the remaining 40 available PRB numbers are 0 through 39. These 40 PRBs are divided into two groups: the first 20 PRBs (PRB 0 through PRB 19) are assigned to the first group, and the last 20 PRBs (PRB 20 through PRB 39) are assigned to the second group.

[0057] When the receiving UE determines PRB 4 as a feedback resource within the first group according to the resource determination rules, PRB 24 in the second group also simultaneously becomes a feedback resource.

[0058] Figure 7 is another schematic diagram for determining the feedback resources in one embodiment. As shown in Figure 7, we assume that SCS = 30k, the RB Set contains 50 PRBs, and K = 3.

[0059] Excluding the 10 PRBs used for shared PRBs within RB Set k, the first 39 of the remaining 40 available PRBs are divided into three groups, and the last PRB is the remaining PRB and is not used for PSFCH transmission. These 39 PRB numbers are PRB 0 to PRB 38.

[0060] When the receiving UE determines PRB 4 as the PSFCH feedback resource within the first group according to the resource determination rules, PRB 17 in the second group and PRB 30 in the third group also simultaneously become PSFCH feedback resources.

[0061] Figure 8 is a further schematic diagram of determining the feedback resources according to one embodiment. As shown in Figure 8, we assume that SCS = 30k, the RB Set contains 50 PRBs, and K = 3.

[0062] Excluding the 10 PRBs used for shared PRBs within RB Set k, the first 39 of the remaining 40 available PRBs are divided into 3 groups. Within each group, 13 PRBs are numbered from PRB 0 to PRB 12, and the last PRB is the remaining PRB, which is not used for PSFCH transmission.

[0063] When the receiving UE determines PRB 4 as a feedback resource within the first group according to the resource determination rules, PRB 4 in the second group and PRB 4 in the third group also simultaneously become feedback resources for the PSFCH.

[0064] Based on the above, after determining the positions of the K exclusive PRBs of the PSFCH, it can be assumed that there is no PSD limitation because the K exclusive PRBs have a certain frequency domain spacing. However, there is a possibility that the distance between the frequency domain of an exclusive PRB and a shared PRB is within 1 MHz. In this case, the power of the exclusive PRB will be affected by the shared PRB, and it may be considered to drop the transmission of the shared PRB in order to guarantee the power of the exclusive PRB. However, if the distance between the frequency domain of a PRB located on an RB Set edge and an exclusive PRB is within 1 MHz, dropping the shared PRB located on an RB Set edge may cause the PSFCH's generated bandwidth to fail to meet the OCB requirements. Therefore, for some special edge PRBs, dropping them would cause the OCB transmission requirements to be not met, and these special shared PRBs should not be dropped.

[0065] Within RB Set k, if SCS=15K, the following occurs:

[0066] 1. If the nth interleave is a shared interleave, and the number of PRBs in the RB Set of that interleave is 10, then if the PRB with the largest index among the exclusive PRBs contains the 85+nth PRB, then the 90+nth shared PRB must not be dropped, and n≧1 and n≦10.

[0067] 2. If the nth interleave is a shared interleave and the number of PRBs in the RB Set of that interleave is 10, then if the PRB with the largest index among the exclusive PRBs contains the 86+nth PRB, then the 90+nth PRB must not be dropped, and n≧1 and n≦10.

[0068] 3. If the nth interleave is a shared interleave and the number of PRBs in the RB Set of that interleave is 10, then if the PRB with the largest index among the exclusive PRBs contains the 87+nth PRB, then the 90+nth PRB must not be dropped, and n≧1 and n≦10.

[0069] 4. If the nth interleave is a shared interleave and the number of PRBs in the RB Set of that interleave is 10, then if the PRB with the smallest index among the exclusive PRBs contains the 5+nth PRB, then the nth PRB must not be dropped, and n≧1 and n≦10.

[0070] 5. If the nth interleave is a shared interleave and the number of PRBs in the RB Set of that interleave is 10, then if the PRB with the smallest index among the exclusive PRBs contains the 4+nth PRB, then the nth PRB must not be dropped, and n≧1 and n≦10.

[0071] 6. If the nth interleave is a shared interleave and the number of PRBs in the RB Set of that interleave is 10, then if the PRB with the smallest index among the exclusive PRBs contains the 3+nth PRB, then the nth PRB must not be dropped, and n≧1 and n≦10.

[0072] Within RB Set k, if SCS=30K, the following occurs:

[0073] 1. If the x-th interleave is a shared interleave and the number of PRBs in the RB Set of that interleave is 10, then if the PRB with the largest index among the exclusive PRBs contains the 43+xth PRB, then the 45+xth PRB must not be dropped, and x ≥ 1 and x ≤ 5.

[0074] 2. If the x-th interleave is a shared interleave and the number of PRBs in the RB Set of that interleave is 10, then if the PRB with the smallest index among the exclusive PRBs contains the 2+x-th PRB, then the x-th PRB must not be dropped, and x ≥ 1 and x ≤ 5.

[0075] Figure 9 is a schematic diagram of puncturing a shared PRB according to one embodiment. As shown in Figure 9, SCS = 15k, the RB Set contains 100 PRBs, and the shared PRB is the first interleave in the RB Set.

[0076] If PRB 85 is included in the UE's PSFCH feedback resource, the 81st shared PRB (PRB 80) will be dropped without being sent, while the 90th shared PRB (PRB 90) will not be dropped.

[0077] Figure 10 is another schematic diagram illustrating the puncturing of a shared PRB according to one embodiment. As shown in Figure 10, SCS = 15k, the RB Set contains 100 PRBs, and the shared PRB is the first interleaved in the RB Set.

[0078] If PRB 5 is included in the UE's PSFCH feedback resource, the 11th shared PRB (PRB 10) will be dropped without sending, while the 1st shared PRB (PRB 0) will not be dropped.

[0079] Furthermore, when one interleave in the RB Set is used for PSFCH transmission, all PRB resources included in the PSFCH can provide feedback information of one or more bits depending on the instruction information.

[0080] In one embodiment, when multiple bits are fed back, a new format (New PSFCH Format) can be adopted.

[0081] Figure 11 is a schematic diagram illustrating the feedback of 2-bit HARQ information using PSFCH format2 according to one embodiment. As shown in Figure 11, in this embodiment, 2-bit HARQ information is fed back on the PSFCH feedback resource using PSFCH format2 in response to instruction information of the physical sidelink control channel (PSCCH).

[0082] Figure 12 is a schematic diagram illustrating the division of the PSFCH interleaving frequency into two groups according to one embodiment. As shown in Figure 12, in this embodiment, the feedback method by frequency division is determined for the PRB included in the PSFCH according to the instruction information, and the frequency domain is divided into Q groups (Q is a positive integer, and Q=2 in Figure 12), and each group independently feeds back 1 bit of information, and the correspondence between the feedback resource of each group and past PSFCH transmission or HARQ process is determined according to the setting, or pre-set or predefined rules.

[0083] In one embodiment, when only 1 bit is fed back on multiple PRBs of a PSFCH transmission, the sequence on the first PRB of the interleaved PSFCH is repeated on the other PRBs of the interleaved PSFCH, and cyclic shift hopping occurs according to the index in the interlaced resource block (Interlaced RB, IRB) of the PRB.

[0084] In one embodiment, when the feedback on multiple PRBs in a PSFCH transmission exceeds 1 bit, the sequence on the first PRB of each group within a Q group in the frequency domain is repeated on the other PRBs in the group, and cyclic shift hopping occurs according to the index of the PRB within the group.

[0085] In one embodiment, the cyclic shift of the sequence on the first PRB within each group in the Q group is determined according to the cyclic shift index, cyclic shift pair index, and PRB index within the interleaved first PRB, corresponding to the ACK or NACK information of the Physical Sidelink Shared Channel (PSSCH) corresponding to the feedback resource of the group.

[0086] Figure 13 is a schematic diagram illustrating how the PSFCH interleaving frequency is divided into two groups to perform ACK and NACK feedback according to one embodiment. Assume that the feedback sequence corresponding to ACK is a, and the feedback sequence corresponding to NACK is b. When the feedback of PSSCH1 is NACK and the feedback of PSSCH2 is ACK, the feedback information on the feedback resource corresponding to the PSSCH in the PSFCH feedback occasion is shown in Figure 13.

[0087] In the embodiments of the present application, a feedback resource determination device is further provided. Figure 14 is a schematic diagram of the structure of a feedback resource determination device according to one embodiment. As shown in Figure 14, the feedback resource determination device is The system comprises: a first decision module 310 configured to determine a first feedback resource set corresponding to each subband in each resource block set included in the data resource pool, and to include at least one feedback resource in the first feedback resource set, wherein the feedback resource includes K exclusive PRBs that are positive integers; a second decision module 320 configured to determine a second feedback resource set according to the subband information and resource block set information of the received data, wherein the second feedback resource set includes at least one first feedback resource set; and a third decision module 330 configured to determine one feedback resource in the second feedback resource set and to transmit physical sidelink feedback information via N shared PRBs that are positive integers and the one feedback resource.

[0088] In one embodiment, the N shared PRBs are N PRBs included in one interleave in one predefined, preconfigured, or configured data resource block set, or the N shared PRBs are N PRBs in a data resource block set determined according to a predefined, preconfigured, or configured bitmap.

[0089] In one embodiment, the apparatus is Each resource block set further includes a first grouping module configured to group PRBs other than shared PRBs that are available for transmitting physical sidelink feedback information, creating groups of K PRBs, and ensuring that the remaining PRBs (less than K) are not used for transmitting physical sidelink feedback information.

[0090] In one embodiment, the first grouping module is: For each of the resource block sets, for the PRBs available for transmitting physical sidelink feedback information other than the shared PRBs, in accordance with the interleaving index, the ungrouped PRBs within one interleaving are divided into groups of K PRBs each in the order of PRB indices, and the resources of the remaining X PRBs within the interleaving and the Y PRBs in the next interleaving are grouped into one group, where X < K, Y < K, and X + Y = K.

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[0093] In one embodiment, the third determination module 330 is configured to determine a group of PRBs as the K exclusive PRBs from among the second feedback resource set according to the resource determination rule.

[0094] In one embodiment, the apparatus further comprises a second grouping module configured to divide the PRBs available for transmitting physical sidelink feedback information other than the shared PRBs in each of the resource block sets into K groups with an equal number of PRBs in the order of PRB indices, and the remaining less than K PRBs are not used for transmitting physical sidelink feedback information.

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[0097] In one embodiment, the third decision module 330 is The system is configured to determine one feedback resource from the second feedback resource set according to the resource determination rule, ultimately determining K PRBs, and forming these K exclusive PRBs.

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[0099] In one embodiment, the resource determination rule is: The process includes determining K PRBs or one PRB based on the resource identifier in the received data, the number of cyclic shift pairs set or pre-configured by the system, the member identifier of the data receiving node, and the number of feedback resources in the second feedback resource set or the number of PRBs within the group of the second feedback resource set.

[0100] In one embodiment, the apparatus is The system further includes a puncturing module configured to puncture a shared PRB that satisfies a specific condition if the bandwidth between any of the shared PRBs in the resource block set and any of the exclusive PRBs among the K exclusive PRBs is smaller than a set threshold.

[0101] In one embodiment, the subcarrier interval SCS is a first value, the nth interleave in the resource block set is a shared PRB, and the number of shared PRBs in the resource block set of the nth interleave is a specified value, If the PRB with the highest index among the K exclusive PRBs contains the 85+nth PRB, the 90+nth shared PRB is held without puncturing, n≧1 and n≦10; if the PRB with the highest index among the K exclusive PRBs contains the 86+nth PRB, the 90+nth shared PRB is held without puncturing, n≧1 and n≦10; and if the PRB with the highest index among the K exclusive PRBs contains the 87+nth PRB, the 90+nth shared PRB is held without puncturing, n≧1 and n≦10 A certain method, where the 5+nth PRB is included in the PRB with the smallest index among the K exclusive PRBs, the nth shared PRB is held without puncturing, n≧1 and n≦10; a method where the 4+nth PRB is included in the PRB with the smallest index among the K exclusive PRBs, the nth shared PRB is held without puncturing, n≧1 and n≦10; a method where the 3+nth PRB is included in the PRB with the smallest index among the K exclusive PRBs, the nth shared PRB is held without puncturing, n≧1 and n≦10; Accordingly, shared PRBs that do not meet the aforementioned specific conditions will not be punctured.

[0102] In one embodiment, SCS is a second value, the x-th interleave in the resource block set is a shared interleave, and the number of shared PRBs on the resource block set for the x-th interleave is a specified value, If the PRB with the highest index among the K exclusive PRBs contains the 43+m PRB, then the 45+m shared PRB is held without puncturing, and x≧1 and x≦5; and if the PRB with the lowest index among the K exclusive PRBs contains the 2+m PRB, then the m shared PRB is held without puncturing, and x≧1 and x≦5. Therefore, shared PRBs that do not meet the aforementioned specific conditions will not be punctured.

[0103] The feedback resource determination device according to this embodiment belongs to the same concept as the feedback resource determination method according to the above embodiment, and technical details not described in detail in this embodiment can be referenced to any of the above embodiments, and this embodiment has the same effect as executing the feedback resource determination method.

[0104] In embodiments of the present application, a communication node is further provided, and Figure 15 is a schematic diagram of the hardware structure of a communication node according to one embodiment. As shown in Figure 15, the communication node according to the present application comprises a processor 410 and a memory 420. The processor 410 in the communication node may be one or more, and Figure 15 shows an example in which there is one processor 410. The memory 420 is configured to store one or more programs. When the one or more programs are executed by the one or more processors 410, the one or more processors 410 implement the feedback resource determination method described in embodiments of the present application.

[0105] The communication node further comprises a communication device 430, an input device 440, and an output device 450.

[0106] The processor 410, memory 420, communication device 430, input device 440, and output device 450 in the communication node can be connected via a bus or other method, and Figure 15 shows an example of connection via a bus.

[0107] The input device 440 may be used to receive input numerical or character information and generate key signal inputs related to user settings and function control of the communication node. The output device 450 may include a display device such as a display screen.

[0108] The communication device 430 may include a receiver and a transmitter. The communication device 430 is configured to transmit and receive information in accordance with the control of the processor 410.

[0109] The memory 420 may be configured as a computer-readable storage medium to store software programs, computer-executable programs and modules, for example, program instructions / modules corresponding to the feedback resource determination method described in the embodiment of the present application (e.g., the first determination module 310, the second determination module 320 and the third determination module 330 in the feedback resource determination device). The memory 420 may include a program storage area capable of storing an operating system and applications necessary for at least one function, and a data storage area capable of storing data created in accordance with the use of the communication node. The memory 420 may also include high-speed random access memory, and may further include non-volatile memory, such as at least one magnetic disk memory element, a flash memory element, or other non-volatile solid-state memory elements. In some examples, the memory 420 may include memory configured remotely from the processor 410, and these remote memories may be connected to the communication node via a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0110] Embodiments of the present application further provide a storage medium on which a computer program is stored, and when the computer program is executed by a processor, a feedback resource determination method according to any one of the embodiments of the present application is realized. The method includes determining a first feedback resource set corresponding to each subband in each resource block set included in a data resource pool, wherein the first feedback resource set includes at least one feedback resource, wherein the feedback resource includes K exclusive PRBs that are positive integers; determining a second feedback resource set according to subband information and resource block set information of the received data, wherein the second feedback resource set includes at least one first feedback resource set; determining one feedback resource in the second feedback resource set and transmitting physical sidelink feedback information via N shared PRBs that are positive integers and the one feedback resource.

[0111] The computer storage medium in the embodiments of this application may employ any combination of one or more computer-readable media. The computer-readable media may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or element, or any combination thereof. Examples of computer-readable storage media (not exhaustive list) include electrical connections having one or more wires, portable computer magnetic disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable CD-ROM, optical memory element, magnetic memory element, or any suitable combination thereof. The computer-readable storage medium may be any tangible medium that contains or stores a program, the program may be used in or in combination with an instruction execution system, apparatus, or element.

[0112] A computer-readable signal medium may include data signals propagated in the baseband or as part of a carrier wave, wherein computer-readable program code is carried. The data signals propagated in this manner may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. The computer-readable signal medium may further be any computer-readable medium other than a computer-readable storage medium, which can transmit, propagate, or transmit programs used by or in combination with instruction execution systems, devices, or elements.

[0113] Program code contained in a computer-readable medium may be transmitted by any suitable medium, including but not limited to wireless, electric wires, optical cables, radio waves (Radio Frequency, RF), or any appropriate combination thereof.

[0114] The computer program code for performing the operations of this invention may be written in one or more programming languages ​​or a combination thereof, and such programming languages ​​include object-oriented programming languages ​​such as Java®, Smalltalk, and C++, as well as general procedural programming languages ​​such as the C language or similar programming languages. The program code may run entirely on the user computer, partially on the user computer, run as a single independent software package, run partly on the user computer and partly on a remote computer, or run entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or it may be connected to an external computer (for example, connected via the Internet using an Internet service provider).

[0115] The above are merely illustrative examples of the present application and are not intended to limit the scope of protection.

[0116] Those skilled in the art should understand that the term "user terminal" covers all suitable types of wireless user equipment, such as mobile phones, portable data processors, portable network browsers, or vehicle-mounted mobile stations.

[0117] Generally, various embodiments of the present application can be implemented in hardware, application-specific circuits, software, logic, or any combination thereof. For example, some aspects may be implemented in hardware, while others may be implemented in firmware or software executable by a controller, microprocessor, or other computing device, but the present application is not limited to these.

[0118] Embodiments of the present invention may be implemented by a data processor of a mobile device executing computer program instructions, for example, in a processor entity through hardware, or a combination of software and hardware. Computer program instructions may be assembler instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0119] Any logic flow block diagram in the drawings of this application may represent a program operation, or an interconnected logic circuit, module, and function, or a combination of a program operation and a logic circuit, module, and function. The computer program may be stored in memory. The memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, not limited to, for example, read-only memory (ROM), random access memory (RAM), optical memory devices and systems (Digital Video Disc, DVD) or compact disc (CD). Computer-readable media may include non-temporary storage media. The data processor may be of any type suitable for the local technical environment, not limited to, for example, a general-purpose computer, an application-specific computer, a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a processor based on a multi-core processor architecture.

Claims

1. A method for determining feedback resources applied to the first node, In each resource block set included in the data resource pool, a first feedback resource set corresponding to each subband is determined, and the first feedback resource set includes at least one feedback resource, and the feedback resource includes K exclusive physical resource blocks (PRBs) that are a positive integer. A second feedback resource set is determined based on the subband information and resource block set information of the received data, and the second feedback resource set includes at least one first feedback resource set. This includes determining one feedback resource in the second feedback resource set and transmitting physical sidelink feedback information through N shared PRBs that are positive integers and the one feedback resource, Method for determining feedback resources.

2. The N shared PRBs are N PRBs included in one interleave in one predefined, preconfigured, or configured data resource blockset, or The N shared PRBs are N PRBs in a data resource block set determined according to a predefined, pre-configured, or configured bitmap. The method for determining feedback resources according to claim 1.

3. This further includes grouping PRBs (Personal Relay Bounds) available for transmitting physical side-link feedback information, excluding shared PRBs, into groups of K PRBs, with the remaining K or fewer PRBs not being used for transmitting physical side-link feedback information. The method for determining feedback resources according to claim 1.

4. In each resource block set, grouping PRBs that can be used for transmitting physical side-link feedback information other than shared PRBs is possible. In each resource block set, for PRBs available for transmitting physical sidelink feedback information other than shared PRBs, the ungrouped PRBs within one interleave are divided into groups of K PRBs according to the interleave index, the resources of the remaining X PRBs within the interleave and the Y PRBs in the next interleave are divided into one group, where X < K, Y < K, and X + Y = K. The method for determining feedback resources according to claim 3. 【Request Item 5】 【Number 1】 The method for determining feedback resources according to claim 4. [Request Item 6] [Number 2] The method for determining feedback resources according to claim 4.

7. Determining one feedback resource in the second set of feedback resources means that This includes determining one group of PRBs from the second feedback resource set as the K exclusive PRBs according to the resource determination rules, The method for determining feedback resources according to claim 3.

8. In each resource block set, the PRBs available for transmitting physical side-link feedback information other than shared PRBs are divided into K groups of equal number according to the PRB index order, and the remaining K or fewer PRBs are not used for transmitting physical side-link feedback information. The method for determining feedback resources according to claim 1. [Request Item 9] [Number 3] The method for determining feedback resources according to claim 8. [Request Item 10] [Number 4] The method for determining feedback resources according to claim 9.

11. Determining one feedback resource in the second set of feedback resources means that This includes determining one feedback resource from the second feedback resource set according to the resource determination rule, ultimately determining K PRBs, and making these K exclusive PRBs. The method for determining feedback resources according to claim 9. [Request Item 12] [Number 5] The method for determining feedback resources according to claim 11.

13. The resource determination rule is: The process includes determining K PRBs or one PRB based on the resource identifier in the received data, the number of cyclic shift pairs set or pre-configured by the system, the member identifier of the data receiving node, and the number of feedback resources in the second feedback resource set or the number of PRBs within the group of the second feedback resource set. The method for determining feedback resources according to claim 7 or 11.

14. If the bandwidth between any of the shared PRBs in the resource block set and any of the K exclusive PRBs is less than a set threshold, the shared PRBs that satisfy certain conditions are further punctured. The method for determining feedback resources according to claim 1.

15. If the subcarrier interval SCS is a first value, the nth interleave in the resource block set is a shared PRB, and the number of shared PRBs in the resource block set for the nth interleave is a specified value, If the PRB with the highest index among the K exclusive PRBs contains the 85+nth PRB, then the 90+nth shared PRB is held without puncturing, and the conditions are n≧1 and n≦10. If the PRB with the highest index among the K exclusive PRBs contains the 86+nth PRB, then the 90+nth shared PRB is held without puncturing, and the conditions are n≧1 and n≦10. If the PRB with the highest index among the K exclusive PRBs contains the 87+nth PRB, then the 90+nth shared PRB is held without puncturing, and the conditions are n≧1 and n≦10. If the PRB with the smallest index among the K exclusive PRBs contains the 5+nth PRB, then the nth shared PRB is held without puncturing, and the conditions are n≧1 and n≦10. If the PRB with the smallest index among the K exclusive PRBs contains the 4+nth PRB, then the nth shared PRB is held without puncturing, and the conditions are n≧1 and n≦10. If the 3+nth PRB is included in the PRB with the smallest index among the K exclusive PRBs, then the nth shared PRB is held without puncturing, and the method is such that n≧1 and n≦10. Accordingly, shared PRBs that do not meet the above specific conditions will not be punctured. The method for determining feedback resources according to claim 14.

16. If SCS is the second value, the x-th interleave in the resource block set is a shared interleave, and the number of shared PRBs on the resource block set for the x-th interleave is a specified value, If the 43+m-th PRB is included in the PRB with the highest index among the K exclusive PRBs, then the 45+m-th shared PRB is held without puncture, and x ≥ 1 and x <= 5. If the PRB with the smallest index among the K exclusive PRBs contains the 2+m-th PRB, then the m-th shared PRB is held without puncture, and x ≥ 1 and x ≤ 5. Accordingly, shared PRBs that do not meet the aforementioned specific conditions will not be punctured. The method for determining feedback resources according to claim 14.

17. It comprises memory and at least one processor, The memory is configured to store at least one program, When the at least one program is executed by the at least one processor, the at least one processor implements the feedback resource determination method according to any one of claims 1 to 16. Communication node.

18. When a computer program is stored and executed by a processor, the feedback resource determination method described in any one of claims 1 to 16 is realized. Computer-readable storage medium.

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