Information transmission method, device, and storage medium

Abstract

This application provides an information transmission method, an apparatus and a storage medium. The information transmission method applied to a first communication node includes: determining at least one second feedback slot mapped to a first feedback slot (S110), each second feedback slot including at least two feedback resource subsets; determining candidate PSSCH transmission occasions corresponding to the at least one feedback resource subset in each second feedback slot (S120); and sending feedback information corresponding to the candidate PSSCH transmission occasions in the first feedback slot to a second communication node (S130).

Description

[Technical field]

[0001] The present application relates to the field of communications, and in particular to information transmission methods, devices and storage media. [Background technology]

[0002] FIG. 1 is a schematic diagram of communication between a user equipment (UE) and a base station according to the related art. As shown in FIG. 1, UE1 transmits one or more physical sidelink shared channels (PSSCHs) to one or more UEs, and then UE2 receives at least one PSSCH in the one or more PSSCHs, and feeds back to UE1 whether the PSSCH is correctly received through a physical sidelink feedback channel (PSFCH). In addition to UE2, there may be other UEs, which feed back to UE1 whether the PSSCH is correctly received through the PSFCH.

[0003] After UE1 receives the PSFCH of UE2 and / or other UEs, UE1 feeds back N-bit Hybrid Automatic Repeat reQuest (HARQ)-acknowledgement (ACK) information to the base station. Here, each bit in the N-bit HARQ-ACK information is used to indicate whether the PSSCH is correctly received. For example, when a predetermined bit in the HARQ-ACK information is 1, it indicates that the corresponding PSSCH is correctly received, and when a predetermined bit in the HARQ-ACK information is 0, it indicates that the corresponding PSSCH is not correctly received. Summary of the Invention [Problem to be solved by the invention]

[0004] In the design of the sidelink of the unlicensed spectrum, how UE1 generates HARQ-ACK information and reports the generated HARQ-ACK information to the base station is an urgent problem to be solved. [Means for solving the problem]

[0005] The embodiment of the present application is An information transmission method applied to a first communication node, comprising: determining at least one second feedback slot mapped to the first feedback slot, each second feedback slot including at least two feedback resource subsets; determining a candidate PSSCH (Physical Sidelink Shared Channel) transmission occasion corresponding to at least one feedback resource subset in each second feedback slot; and transmitting feedback information corresponding to the candidate PSSCH transmission occasions to a second communication node in the first feedback slot. A method for transmitting information is provided.

[0006] The embodiment of the present application is An information transmission method applied to a second communication node, comprising: receiving feedback information corresponding to candidate PSSCH transmission occasions transmitted from a first communication node in a first feedback slot; A method for transmitting information is provided.

[0007] The embodiment of the present application is A 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 method according to any of the preceding embodiments. Provides information transmission equipment.

[0008] The embodiment of the present application is A computer program is stored which, when executed by a processor, performs the method according to any of the preceding embodiments. Provide a storage medium. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram of communication between a UE and a base station according to the related art. [Diagram 2] 2 is a flowchart of an information transmission method according to an embodiment of the present application; [Diagram 3] 4 is a flowchart of another information transmission method according to an embodiment of the present application. [Figure 4] FIG. 2 is a schematic diagram showing slot settings according to an embodiment of the present application. [Diagram 5] FIG. 2 is a schematic diagram of setting candidate PSSCH transmission occasion numbers according to an embodiment of the present application; [Figure 6] FIG. 11 is a schematic diagram of setting the numbers of another candidate PSSCH transmission occasions according to an embodiment of the present application; [Figure 7] FIG. 11 is a schematic diagram of further candidate PSSCH transmission occasion number setting according to an embodiment of the present application; [Figure 8] FIG. 13 is a schematic diagram showing another slot setting according to an embodiment of the present application. [Figure 9] FIG. 13 is a schematic diagram of a further slot configuration according to an embodiment of the present application. [Figure 10] FIG. 1 is a structural block diagram of an information transmission device according to an embodiment of the present application. [Figure 11] FIG. 2 is a structural block diagram of another information transmission device according to an embodiment of the present application; [Figure 12] 1 is a structural schematic diagram of an information transmission device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, the present application will be described with reference to the drawings. Hereinafter, the present application will be described with reference to the drawings of the embodiments. The examples given are merely for the purpose of interpreting the present application, and are not intended to limit the scope of the present application.

[0011] In the SideLink communication system, when traffic needs to be transmitted between UEs, the traffic between UEs is transmitted directly from a data source UE to a target UE via SideLink without going through the network side, i.e., without going through the cellular link transmission between the UE and the base station. Such a mode of direct communication between UEs has a feature that is clearly distinguished from the conventional cellular system communication mode. Typical applications of SideLink communication include device-to-device (D2D) communication and vehicle to everything (V2X). Here, the vehicle to everything (V2X) communication includes vehicle to vehicle (V2V), vehicle to pedestrian (V2P), and vehicle to infrastructure (V2I). For short-range communication users to which SideLink communication can be applied, SideLink communication can not only save wireless spectrum resources, but also further reduce the data transmission pressure of the core network, reduce the occupation of system resources, improve the spectral efficiency of the cellular communication system, reduce communication delays, and significantly save network operation costs.

[0012] In an unlicensed spectrum, only channels that have successfully passed LBT (Listen Before Talk) can transmit. In the so-called LBT, communication nodes need to compete for resources, and only when the competition for time-frequency resources is successful can the communication node transmit information on the time-frequency resources. More specifically, in the LBT mechanism, before transmitting information, the communication node performs a channel access process (eavesdrops on whether the channel is idle), and only when the communication node eavesdrops that the channel is idle can the communication node transmit information.

[0013] In the SideLink design, we only target the Intelligent Transport System (ITS) spectrum and the licensed spectrum allocated to the network operator in the case of SideLink. Therefore, in the design where the SideLink of the unlicensed spectrum is used for SideLink, how to generate HARQ-ACK information and report the HARQ-ACK information to the base station is an urgent problem to be solved.

[0014] An embodiment of the present application proposes an information transmission method, which supports a terminal to feed back HARQ-ACK information to a base station when a sidelink uses an unlicensed spectrum and there are multiple PSFCH receiving occasions, and the fed back HARQ-ACK information is used to reflect whether the sidelink PSSCH is correctly received.

[0015] In one embodiment, FIG. 2 is a flowchart of an information transmission method according to an embodiment of the present application. The embodiment can be performed by a first communication node. Here, the first communication node can be a terminal side (e.g., a user equipment). As shown in FIG. 2, the embodiment includes S110 to S130.

[0016] At S110, determine at least one second feedback slot that is mapped to the first feedback slot.

[0017] Wherein, each second feedback slot includes at least two feedback resource subsets. In an embodiment, the first feedback slot is a slot for feeding back HARQ-ACK information in one Physical Uplink Control Channel (PUCCH) slot, the second feedback slot is a slot including a PSFCH resource, and the feedback resource subset may be a PSFCH resource subset. In an embodiment, the first feedback slot may correspond to one or more second feedback slots, and sorted according to a time domain, the first feedback slot is located after the second feedback slot. Note that, determining at least one second feedback slot mapped to one first feedback slot is, that is, determining at least one slot including a PSFCH resource mapped to one first feedback slot.

[0018] At S120, determine candidate PSSCH transmission occasions corresponding to at least one feedback resource subset in each second feedback slot.

[0019] In an embodiment, for each slot including a PSFCH resource, determine a candidate PSSCH transmission occasion corresponding to at least one feedback resource subset included in the slot. Here, the candidate PSSCH transmission occasion means a slot available for transmitting a PSSCH. In an embodiment, each feedback resource subset may include a plurality of PSFCH resources for feeding back one or more candidate PSSCH transmission occasions. In an embodiment, the candidate PSSCH transmission occasions corresponding to the two feedback resource subsets may be the same or different. If the candidate PSSCH transmission occasions corresponding to the two feedback resource subsets are the same, it can be understood that the candidate PSSCH transmission occasion is fed back twice, that is, the information on whether it is correctly received is sent twice to the first communication node.

[0020] At S130, feedback information corresponding to the candidate PSSCH transmission occasions is transmitted to a second communication node in a first feedback slot.

[0021] Here, the first communication node sends feedback information to the second communication node through the first feedback slot to indicate to the second communication node whether the PSSCH corresponding to the candidate PSSCH transmission occasion is correctly received, thereby achieving the effect that the first communication node can send HARQ-ACK information to the second communication node when there are multiple PSSCH receiving occasions in the unlicensed spectrum.

[0022] In one embodiment, each second feedback slot including at least two feedback resource subsets includes each feedback resource subset corresponding to one physical sidelink feedback channel PSFCH reception occasion of a candidate PSSCH transmission occasion corresponding to each feedback resource in each feedback resource subset. In an embodiment, the number of PSFCH reception occasions of each candidate PSSCH transmission occasion is equal to the number of feedback resource subsets. Exemplarily, assuming that the second feedback slot includes two feedback resource subsets, each feedback resource in one feedback resource subset corresponds to a first PSFCH reception occasion of one candidate PSSCH transmission occasion, and each feedback resource in the other feedback resource subset corresponds to a second PSFCH reception occasion of one candidate PSSCH transmission occasion.

[0023] In one embodiment, determining candidate PSSCH transmission occasions corresponding to at least one feedback resource subset in each second feedback slot includes determining candidate PSSCH transmission occasions corresponding to one feedback resource subset in each second feedback slot, where each feedback resource in one feedback resource subset corresponds to a first PSFCH reception occasion corresponding to a candidate PSSCH transmission occasion. In an embodiment, determining candidate PSSCH transmission occasions with one feedback resource subset for each second feedback slot, where each feedback resource in the feedback resource subset corresponds to a first PSFCH reception occasion of a candidate PSSCH transmission occasion.

[0024] In one embodiment, determining candidate PSSCH transmission occasions corresponding to at least one feedback resource subset in each second feedback slot includes determining candidate PSSCH transmission occasions corresponding to one feedback resource subset in each second feedback slot, where each feedback resource in one feedback resource subset corresponds to a final PSFCH reception occasion corresponding to the candidate PSSCH transmission occasion. In one embodiment, determining candidate PSSCH transmission occasions with one feedback resource subset for each second feedback slot, where each feedback resource in the feedback resource subset corresponds to a final PSFCH reception occasion of multiple PSFCH reception occasions of one candidate PSSCH transmission occasion.

[0025] In one embodiment, determining candidate PSSCH transmission occasions corresponding to at least one feedback resource subset in each second feedback slot includes determining candidate PSSCH transmission occasions corresponding to an m-th feedback resource subset in each second feedback slot, where 1≦m≦M, and M is the number of feedback resource subsets included in each second feedback slot. In an embodiment, determining candidate PSSCH transmission occasions with one feedback resource subset for each second feedback slot, where each feedback resource in the feedback resource subset corresponds to an m-th PSFCH reception occasion of one candidate PSSCH transmission occasion.

[0026] In one embodiment, determining candidate PSSCH transmission occasions corresponding to at least one feedback resource subset in each second feedback slot includes determining candidate PSSCH transmission occasions corresponding to a first feedback resource subset in the at least one second feedback slot, and determining candidate PSSCH transmission occasions corresponding to the first feedback resource subset and a second feedback resource subset in the at least one second feedback slot, where each feedback resource in the first feedback resource subset corresponds to a first PSFCH reception occasion of the candidate PSSCH transmission occasion, and each feedback resource in the second feedback resource subset corresponds to a final PSFCH reception occasion of the candidate PSSCH transmission occasion. In an embodiment, the candidate PSSCH transmission occasions can be determined based on the first PSFCH receiving occasion and the last PSFCH receiving occasion, i.e., for at least one slot of the second feedback slots, a candidate PSSCH transmission occasion corresponding to a first feedback resource subset in the second feedback slot is determined, and for at least one slot of the second feedback slots, a candidate PSSCH transmission occasion corresponding to a first feedback resource subset and a second feedback resource subset in the second feedback slot is determined, where each feedback resource in the first feedback resource subset corresponds to the first PSFCH receiving occasion of the candidate PSSCH transmission occasion, and each feedback resource in the second feedback resource subset corresponds to the last PSFCH receiving occasion of the candidate PSSCH transmission occasion.

[0027] In one embodiment, determining candidate PSSCH transmission occasions corresponding to at least one feedback resource subset in each second feedback slot includes determining candidate PSSCH transmission occasions corresponding to a first feedback resource subset in at least one second feedback slot and determining candidate PSSCH transmission occasions corresponding to the first feedback resource subset and the second feedback resource subset in at least one second feedback slot. Here, each feedback resource in the first feedback resource subset corresponds to the m-th PSFCH reception occasion of the candidate PSSCH transmission occasion, where 1 ≦ m < M, and M is the number of feedback resource subsets included in each second feedback slot. Each feedback resource in the second feedback resource subset is the last PSFCH reception occasion corresponding to the candidate PSSCH transmission occasion. In the embodiment, candidate PSSCH transmission occasions can be determined based on the m-th PSFCH reception occasion and the last PSFCH reception occasion, that is, for at least one slot among the second feedback slots, determine candidate PSSCH transmission occasions corresponding to the first feedback resource subset in the second feedback slot, and for at least one slot among the second feedback slots, determine candidate PSSCH transmission occasions corresponding to the first feedback resource subset and the second feedback resource subset in the second feedback slot. Here, each feedback resource in the first feedback resource subset corresponds to the m-th PSFCH reception occasion of the candidate PSSCH transmission occasion, and each feedback resource in the second feedback resource subset corresponds to the last PSFCH reception occasion among the m PSFCH reception occasions corresponding to the candidate PSSCH transmission occasion.

[0028] In one embodiment, the manner of determining the value of m includes determining the value of m according to received control information. In an embodiment, the first communication node receives the control information sent from the second communication node, and determines the value of m according to the control information.

[0029] In one embodiment, the information type of the control information includes at least one of the following: Radio Resource Control (RRC) signaling, System Information Block (SIB) information, and Downlink Control Information (DCI).

[0030] In one embodiment, the control information carries at least one of a feedback resource subset number and a number of PSFCH reception occasions.

[0031] In one embodiment, determining the value of m based on the received control information includes one of: determining that the value of m is a number of a feedback resource subset; determining that the value of m is a number equal to the number of the feedback resource subset plus 1; and determining that the value of m is a number representing the number of PSFCH receiving occasions.

[0032] In an embodiment, when the control information includes a feedback resource subset number, the second communication node can determine based on the control information that the value of m is equal to the feedback resource subset number, or equal to the feedback resource subset number plus 1. It can be understood that when the feedback resource subset number starts from 0, the value of m is equal to the feedback resource subset number plus 1, and when the feedback resource subset number starts from 1, the value of m is equal to the feedback resource subset number. When the control information includes the number of PSFCH receiving occasions, the second communication node can determine based on the control information that the value of m is equal to the number of PSFCH receiving occasions.

[0033] In one embodiment, the number of the candidate PSSCH transmission occasion is determined by the period value of the PSFCH, the fth second feedback slot sorted in reverse order in the time domain, and the n f and determining a number of the candidate PSSCH transmission occasion based on the th candidate PSSCH transmission occasion. In an embodiment, j can be used to represent the number of the candidate PSSCH transmission occasion, where the rule for j is j=f×T+n f Here, T may represent a periodicity value of the PSFCH, and f represents an f-th second feedback slot from the back in the time domain among F second feedback slots mapped to one first feedback slot, where f is an integer between [0, F), and n f is the n th feedback slot that is mapped to the f th second feedback slot. f th candidate PSSCH transmission occasion.

[0034] In one embodiment, among all the candidate PSSCH transmission occasions, the jth candidate PSSCH transmission occasion in the reverse order of the time domain is numbered j. In one embodiment, among all the candidate PSSCH transmission occasions, the jth candidate PSSCH transmission occasion in the reverse order of the time domain is numbered j.

[0035] In one embodiment, the bit number of the feedback information is equal to the number of the candidate PSSCH transmission occasion. In this embodiment, the first communication node transmits feedback information to the second communication node, and the j-th bit of the feedback information fed back corresponds to the feedback information of the candidate PSSCH transmission occasion numbered j.

[0036] In one embodiment, sorting is performed in order of time domain, and for a first second feedback slot, the candidate PSSCH transmission occasions are the candidate PSSCH transmission occasions corresponding to the first feedback resource subset and the second feedback resource subset; sorting is performed in order of time domain, and for other second feedback slots other than the first second feedback slot, the candidate PSSCH transmission occasions are the candidate PSSCH transmission occasions corresponding to the first feedback resource subset.

[0037] In one embodiment, determining at least one second feedback slot to be mapped to the first feedback slot includes: determining the first feedback slot based on time domain position information of a PUCCH indicated by a DCI or an RRC message; and determining at least one second feedback slot to be mapped to the first feedback slot based on a timing relationship between a PSFCH and a PUCCH indicated by a DCI or an RRC message, wherein the first feedback slot is a PUCCH slot, the second feedback slot is a slot including a PSFCH resource, and the feedback resource subset is a PSFCH resource subset.

[0038] In an embodiment, FIG. 3 is a flow chart of another information transmission method according to an embodiment of the present application. This embodiment can be performed by a second communication node, where the second communication node is a base station. As shown in FIG. 3, this embodiment includes S210.

[0039] At S210, feedback information corresponding to a candidate PSSCH transmission occasion transmitted from a first communication node in a first feedback slot is received.

[0040] In an embodiment, the second communication node receives feedback information corresponding to a candidate PSSCH transmission occasion transmitted from the first communication node in the first feedback slot, thereby timely knowing whether data between the first communication node and another first communication node has been transmitted accurately.

[0041] In example 1, the first communication node is a terminal, and the second communication node is a base station, and a feedback information transmission process is described. In the embodiment, the step of the terminal reporting HARQ-ACK information to the base station includes: determining a slot including F≧1 PSFCH resources (i.e., the second feedback slot in the above embodiment) that is mapped to one first feedback slot n, and the slot including PSFCH resources includes M≧2 PSFCH resource subsets; and for each of the slots including PSFCH resources, determining candidate PSSCH transmission occasions corresponding to at least one PSFCH resource subset included in the slot.

[0042] Report HARQ-ACK information to the base station, where the HARQ-ACK information includes HARQ-ACK information of the candidate PSSCH transmission occasions.

[0043] A candidate PSSCH transmission occasion belonging to the candidate PSSCH transmission occasions is an occasion at which the first communication node may transmit a PSSCH, but does not mean that the first communication node will necessarily transmit a PSSCH on the candidate PSSCH transmission occasion.

[0044] Preferably, the slot including the PSFCH resource includes M≧2 PSFCH resource subsets, which includes, for one PSFCH resource subset, each PSFCH resource in the PSFCH resource subset corresponds to a first PSFCH reception occasion of one PSSCH, and, for one PSFCH resource subset, each PSFCH resource in the PSFCH resource subset corresponds to a second PSFCH reception occasion of one PSSCH, and by analogy therewith.

[0045] Fig. 4 is a schematic diagram of slot setting according to an embodiment of the present application. The above process will be described in detail with reference to Fig. 4. Before describing the above process in detail, Fig. 4 will be described first.

[0046] In FIG. 4, there is one slot containing a PSFCH for every four sidelink slots, i.e. the period of the PSFCH is T=4.

[0047] In Fig. 4, the first feedback slot n is the slot of HARQ-ACK information reported by the terminal to the base station, and the number of the first feedback slot n is expressed in the form of X+21. Assume that one group of slot timing values ​​from PSFCH to HARQ feedback is {2,6,10}. In this case, the slots before slot n with slot intervals of {2,6,10} to slot n are {X+19,X+15,X+11}, and these three slots include PSFCH resources. Therefore, the slots including F=3 PSFCH resources mapped to slot n are {X+19,X+15,X+11}.

[0048] In FIG. 4, from the perspective of one UE2 that receives a PSSCH, UE2 needs to feed back sidelink HARQ-ACK information to UE1 via a PSFCH for the received PSSCH. For one PSSCH in one slot, UE2 has M=2 PSFCH transmission occasions. From the perspective of UE2, the PSFCH transmission occasion is a PSFCH transmission occasion. The first PSFCH transmission occasion is a slot including the first PSFCH resource after G (in FIG. 4, G=2) slots, and the second transmission occasion is a slot including the next PSFCH resource after the slot where the first PSFCH transmission occasion is located. Here, G represents the smallest slot interval between PSSCH reception and PSFCH transmission. Based on the description, for a PSSCH in slot X+2, the first PSFCH transmission occasion is located in slot X+7, and the second PSFCH transmission occasion is located in slot X+11.

[0049] Similarly, from the perspective of UE1 that has transmitted one PSSCH, UE1 needs to receive sidelink HARQ-ACK information fed back by UE2 via PSFCH, and UE2 is the receiving UE of the PSSCH. For one PSSCH in one slot, UE1 has M PSFCH transmission occasions. From the perspective of UE1, the PSFCH transmission occasion is a PSFCH reception occasion. The first PSFCH transmission occasion is the slot containing the first PSFCH resource after G (in FIG. 4, G=2) slots, and the second transmission occasion is the slot containing the next PSFCH resource after the slot where the first PSFCH transmission occasion is located. Here, G represents the smallest slot interval between PSSCH transmission and PSFCH reception.

[0050] Each slot including a PSFCH resource includes M PSFCH resource subsets, each of which corresponds to one PSFCH transmission occasion. In FIG. 4, a slot including a PSFCH resource with M=2 includes PSFCH resource subset 1 and PSFCH resource subset 2. PSFCH resource subset 1 includes multiple PSFCH resources, each of which corresponds to a first PSFCH transmission occasion. Similarly, PSFCH resource subset 2 includes multiple PSFCH resources, each of which corresponds to a second PSFCH transmission occasion.

[0051] Based on the description of FIG. 4 above, the terminal performs the following process.

[0052] The terminal determines slots including F≧1 PSFCH resources mapped to one slot n, and as described above, the slots including F≧1 PSFCH resources mapped to slot n are three slots, X+19, X+15, and X+11.

[0053] For a slot including the PSFCH resource, determine a candidate PSSCH transmission occasion corresponding to at least one PSFCH resource subset included in the slot. For slot X+19, the candidate PSSCH transmission occasion determined by PSFCH resource subset 1 is located at {X+17, X+16, X+15, X+14}.

[0054] UE1 reports HARQ-ACK information to the base station, where the HARQ-ACK information includes HARQ-ACK information of the candidate PSSCH transmission occasions.

[0055] The terminal determines candidate PSSCH transmission occasions for the F PSFCH slots respectively, and feeds back HARQ-ACK information to the base station for all these candidate PSSCH transmission occasions. The slot in which UE1 reports HARQ-ACK information to the base station is PUCCH slot n, and in PUCCH slot n, the terminal reports HARQ-ACK information to the base station via PUCCH or PUSCH.

[0056] In example 2, the first communication node is a terminal, the second communication node is a base station, and the terminal determines a candidate PSSCH transmission occasion at the initial PSFCH receiving occasion as an example to describe the transmission process of feedback information. In the embodiment, the step of the terminal reporting HARQ-ACK information to the base station includes: determining a slot including F≧1 PSFCH resources to be mapped to one slot n, the slot including the PSFCH resources includes M≧2 PSFCH resource subsets; and for each slot including the PSFCH resources, determining a candidate PSSCH transmission occasion by one PSFCH resource subset, where each PSFCH resource in the PSFCH resource subset corresponds to the initial PSFCH transmission occasion of one PSSCH, and reporting HARQ-ACK information to the base station, the HARQ-ACK information including the HARQ-ACK information of the candidate PSSCH transmission occasion.

[0057] Next, the above process will be described in detail with reference to Fig. 4. The description of Fig. 4 itself refers to Example 1.

[0058] The terminal determines a slot including F≧1 PSFCH resources to be mapped to one slot n, and the slot including the PSFCH resource includes M≧2 PSFCH resource subsets. In Fig. 4, the slot including F≧1 PSFCH resources to be mapped to slot n is three slots, {X+19, X+15, X+11}. Each of the three slots includes M=2 PSFCH resource subsets, which are PSFCH resource subset 1 and PSFCH resource subset 2, respectively.

[0059] For each slot including the PSFCH resource, determine candidate PSSCH transmission occasions by one PSFCH resource subset, where each PSFCH resource in the PSFCH resource subset corresponds to the first PSFCH transmission occasion of one PSSCH. For slot X+19 including the PSFCH resource, PSFCH resource subset 1 includes multiple PSFCH resources, where each PSFCH resource corresponds to the first transmission occasion of one PSSCH. Wherein at least one PSFCH resource corresponds to the PSSCH resource in slot X+14, at least one PSFCH resource corresponds to the PSSCH resource in slot X+15, at least one PSFCH resource corresponds to the PSSCH resource in slot X+16, and at least one PSFCH resource corresponds to the PSSCH resource in slot X+17. Therefore, due to PSFCH resource subset 1 in slot X+19 including PSFCH resources, the determined candidate PSSCH transmission occasions are located in slots {X+14, X+15, X+16, X+17}. Similarly, due to PSFCH resource subset 1 in slot X+15, the determined candidate PSSCH transmission occasions are located in slots {X+10, X+11, X+12, X+13}, and due to PSFCH resource subset 1 in slot X+11, the determined candidate PSSCH transmission occasions are located in slots {X+6, X+7, X+8, X+9}. Therefore, based on this process, all the determined candidate PSSCH transmission occasions are located in slots {X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13, X+14, X+15, X+16, X+17}, respectively.

[0060] UE1 reports HARQ-ACK information to the base station, and the HARQ-ACK information includes HARQ-ACK information of the candidate PSSCH transmission occasion. The terminal feeds back 12 bits of HARQ-ACK to the base station, where each bit of HARQ-ACK corresponds to one candidate PSSCH transmission occasion among the candidate PSSCH transmission occasions located in slots {X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13, X+14, X+15, X+16, X+17}. The slot in which UE1 reports HARQ-ACK information to the base station is PUCCH slot n, and in PUCCH slot n, the terminal reports HARQ-ACK information to the base station via PUCCH or PUSCH.

[0061] Preferably, the candidate PSSCH transmission occasions are numbered, and the numbering rule determines the number j of the candidate PSSCH transmission occasions, where j=f×T+n f Here, T represents the periodicity of the PSFCH, f represents the slot including the fth PSFCH resource from the back in time among the slots including F PSFCH resources mapped to one slot, f is an integer between [0, F), and n f is the nth PSFCH resource that is mapped to the slot containing the fth PSFCH resource. f Represents the th PSSCH.

[0062] According to the numbering rule, the numbers of the candidate PSSCH transmission occasions of slots {X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13, X+14, X+15, X+16, X+17} are {11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0}, respectively. Figure 5 is a schematic diagram of the setting of the numbers of the candidate PSSCH transmission occasions according to an embodiment of the present application. As shown in Figure 5, the 0th bit of the 12 HARQ bits corresponds to the candidate PSSCH transmission occasion numbered 0, and the 1st bit of the 12 HARQ bits corresponds to the candidate PSSCH transmission occasion numbered 1, which is inferred.

[0063] In example 3, the first communication node is a terminal, the second communication node is a base station, and the terminal determines a candidate PSSCH transmission occasion in the last PSFCH receiving occasion as an example to describe the transmission process of feedback information. In the embodiment, the step of the terminal reporting HARQ-ACK information to the base station includes: determining a slot including F≧1 PSFCH resources to be mapped to one slot n, the slot including the PSFCH resources includes M≧2 PSFCH resource subsets; and determining a candidate PSSCH transmission occasion by one PSFCH resource subset for each slot including the PSFCH resources, where each PSFCH resource in the PSFCH resource subset corresponds to a last PSFCH transmission occasion among the M PSFCH transmission occasions of one PSSCH, and reporting HARQ-ACK information to the base station, the HARQ-ACK information including the HARQ-ACK information of the candidate PSSCH transmission occasion.

[0064] Next, the above process will be described in detail with reference to Fig. 4. The description of Fig. 4 itself refers to Example 1.

[0065] The terminal determines a slot including F≧1 PSFCH resources to be mapped to one slot n, and the slot including the PSFCH resource includes M≧2 PSFCH resource subsets. In Fig. 4, the slot including F≧1 PSFCH resources to be mapped to slot n is three slots, {X+19, X+15, X+11}. Each of the three slots includes M=2 PSFCH resource subsets, which are PSFCH resource subset 1 and PSFCH resource subset 2, respectively.

[0066] For each slot including the PSFCH resource, determine candidate PSSCH transmission occasions by one PSFCH resource subset, where each PSFCH resource in the PSFCH resource subset corresponds to a final PSFCH transmission occasion among the M PSFCH transmission occasions of one PSSCH. For slot X+19 including the PSFCH resource, PSFCH resource subset 2 includes multiple PSFCH resources, where each PSFCH resource corresponds to a final transmission occasion among the M transmission occasions of one PSSCH. In the PSFCH resource subset 2 in slot X+19, at least one PSFCH resource corresponds to a PSSCH resource in slot X+10, at least one PSFCH resource corresponds to a PSSCH resource in slot X+11, at least one PSFCH resource corresponds to a PSSCH resource in slot X+12, and at least one PSFCH resource corresponds to a PSSCH resource in slot X+13. Therefore, due to PSFCH resource subset 2 in slot X+19 including PSFCH resources, the determined candidate PSSCH transmission occasions are located in slots {X+10, X+11, X+12, X+13}. Similarly, due to PSFCH resource subset 2 in slot X+15, the determined candidate PSSCH transmission occasions are located in slots {X+6, X+7, X+8, X+9}, and due to PSFCH resource subset 2 in slot X+11, the determined candidate PSSCH transmission occasions are located in slots {X+2, X+3, X+4, X+5}. Therefore, based on this process, all the determined candidate PSSCH transmission occasions are located in slots {X+2, X+3, X+4, X+5, X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13}, respectively.

[0067] UE1 reports HARQ-ACK information to the base station, and the HARQ-ACK information includes HARQ-ACK information of the candidate PSSCH transmission occasion. The terminal feeds back 12 bits of HARQ-ACK to the base station, where each bit of HARQ-ACK corresponds to one candidate PSSCH transmission occasion among the candidate PSSCH transmission occasions located in slots {X+2, X+3, X+4, X+5, X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13}. The slot in which UE1 reports HARQ-ACK information to the base station is PUCCH slot n, and in PUCCH slot n, the terminal reports HARQ-ACK information to the base station via PUCCH or PUSCH.

[0068] Preferably, the candidate PSSCH transmission occasions are numbered, and the numbering rule determines the number j of the candidate PSSCH transmission occasions, where j=f×T+n f It includes:

[0069] Here, T represents the periodicity value of the PSFCH, f represents the slot including the fth PSFCH resource from the back in time among the slots including F PSFCH resources mapped to one slot, f is an integer between [0, F), and n f is the nth PSFCH resource that is mapped to the slot containing the fth PSFCH resource. f Represents the th PSSCH.

[0070] According to the numbering rule, the numbers of the candidate PSSCH transmission occasions of slots {X+2, X+3, X+4, X+5, X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13} are {11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0}, respectively. Figure 6 is a schematic diagram of setting the numbers of the candidate PSSCH transmission occasions according to another embodiment of the present application. As shown in Figure 6, the 0th bit of the 12 HARQ bits corresponds to the candidate PSSCH transmission occasion numbered 0, and the 1st bit of the 12 HARQ bits corresponds to the candidate PSSCH transmission occasion numbered 1, by analogy.

[0071] In example 4, the first communication node is a terminal, the second communication node is a base station, and the terminal determines a candidate PSSCH transmission occasion at the m-th PSFCH receiving occasion as an example to describe the transmission process of feedback information. In the embodiment, the step of the terminal reporting HARQ-ACK information to the base station includes: determining a slot including F≧1 PSFCH resources that is mapped to one slot n, and the slot including the PSFCH resource includes M≧2 PSFCH resource subsets; and determining a candidate PSSCH transmission occasion by one PSFCH resource subset for each slot including the PSFCH resource. Wherein, each PSFCH resource in the PSFCH resource subset corresponds to an m-th PSFCH transmission occasion of one PSSCH, where m is an integer between [1, M], and before determining the value of m, the terminal receives control information transmitted from the base station, and the terminal determines the value of m according to the received control information and reports HARQ-ACK information to the base station, where the HARQ-ACK information includes HARQ-ACK information of the candidate PSSCH transmission occasion.

[0072] Next, the above process will be described in detail with reference to Fig. 4. The description of Fig. 4 itself refers to Example 1.

[0073] The terminal determines a slot including F≧1 PSFCH resources to be mapped to one slot n, and the slot including the PSFCH resource includes M≧2 PSFCH resource subsets. In Fig. 4, the slot including F≧1 PSFCH resources to be mapped to slot n is three slots, {X+19, X+15, X+11}. Each of the three slots includes M=2 PSFCH resource subsets, which are PSFCH resource subset 1 and PSFCH resource subset 2, respectively.

[0074] When M=2 and m=1, the terminal determines slots including F≧1 PSFCH resources mapped to one slot n as {X+19, X+15, X+11}. The slots of the determined candidate PSSCH transmission occasions are {X+14, X+15, X+16, X+17}, {X+10, X+11, X+12, X+13}, and {X+6, X+7, X+8, X+9}, respectively, based on {PSFCH resource subset 1 in slot X+19, PSFCH resource subset 1 in slot X+15, PSFCH resource subset 1 in slot X+11}. Therefore, all determined candidate PSSCH transmission occasions are located in slots {X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13, X+14, X+15, X+16, X+17}, respectively. The terminal reports 12 bits of HARQ-ACK information to the base station for the 12 candidate PSSCH transmission occasions.

[0075] When M=2 and m=2, the terminal determines slots including F≧1 PSFCH resources to be mapped to one slot n as {X+19, X+15, X+11}. According to {PSFCH resource subset 2 in slot X+19, PSFCH resource subset 2 in slot X+15, PSFCH resource subset 2 in slot X+11}, the slots of the determined candidate PSSCH transmission occasions are {X+10, X+11, X+12, X+13}, {X+6, X+7, X+8, X+9}, {X+2, X+3, X+4, X+5}, respectively. Therefore, all the determined candidate PSSCH transmission occasions are located in slots {X+2, X+3, X+4, X+5, X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13}, respectively. The terminal reports 12 bits of HARQ-ACK information to the base station for the 12 candidate PSSCH transmission occasions.

[0076] Preferably, the terminal can determine the above-mentioned m value in the following manner:

[0077] The terminal receives control information transmitted from a base station, the control information including a number of a PSFCH resource subset, and the terminal determines based on the received control information that the value m is equal to the number of the PSFCH resource subset or equal to the number of the PSFCH resource subset plus 1; or the terminal receives control information transmitted from a base station, the control information including a number of PSFCH transmission occasions, and the terminal determines based on the received control information that the value m is equal to the number of the PSFCH transmission occasions.

[0078] Preferably, the control information includes at least one of RRC signaling (RRC, Radio Resource Control), SIB information (SIB, System Information Block), and DCI (Downlink Control Information).

[0079] In example 5, the first communication node is a terminal, the second communication node is a base station, and the terminal determines candidate PSSCH transmission occasions at the first PSFCH receiving occasion and the last PSFCH receiving occasion as an example to describe the transmission process of feedback information. In the embodiment, the step of the terminal reporting HARQ-ACK information to the base station includes: determining a slot including F≧1 PSFCH resources to be mapped to one slot n, the slot including the PSFCH resources includes M≧2 PSFCH resource subsets; and for at least one slot of the slots including the PSFCH resources, determining a candidate PSSCH transmission occasion corresponding to the first PSFCH resource subset in the slot. For at least one slot of the slots including the PSFCH resources, determining a candidate PSSCH transmission occasion corresponding to the first PSFCH resource subset and the second PSFCH resource subset in the slot. Each PSFCH resource in the first PSFCH resource subset corresponds to the first PSFCH transmission occasion of one PSSCH. Each PSFCH resource in the second PSFCH resource subset corresponds to a final PSFCH transmission occasion among M PSFCH transmission occasions corresponding to one PSSCH, and reports HARQ-ACK information to the base station, where the HARQ-ACK information includes HARQ-ACK information of the candidate PSSCH transmission occasion.

[0080] Next, the above process will be described in detail with reference to Fig. 4. The description of Fig. 4 itself is to be referred to Example 1.

[0081] The terminal determines a slot including F≧1 PSFCH resources to be mapped to one slot n, and the slot including the PSFCH resource includes M≧2 PSFCH resource subsets. In Fig. 4, the slot including F≧1 PSFCH resources to be mapped to slot n is three slots, {X+19, X+15, X+11}. Each of the three slots includes M=2 PSFCH resource subsets, which are PSFCH resource subset 1 and PSFCH resource subset 2, respectively.

[0082] For at least one slot among the slots including the PSFCH resource, determine a candidate PSSCH transmission occasion corresponding to a first PSFCH resource subset in the slot. For at least one slot among the slots including the PSFCH resource, determine a candidate PSSCH transmission occasion corresponding to a first PSFCH resource subset and a second PSFCH resource subset in the slot. Each PSFCH resource in the first PSFCH resource subset corresponds to a first PSFCH transmission occasion of one PSSCH. Each PSFCH resource in the second PSFCH resource subset corresponds to a last PSFCH transmission occasion of M PSFCH transmission occasions corresponding to one PSSCH. Based on the above, a slot including F≧1 PSFCH resources is {X+19, X+15, X+11}. In this embodiment, the first PSFCH resource subset corresponds to PSFCH resource subset 1 in Fig. 4, and each PSFCH resource in PSFCH resource subset 1 corresponds to the first PSFCH transmission occasion of one PSSCH. The second PSFCH resource subset corresponds to PSFCH resource subset M (M=2) in Fig. 4, and each PSFCH resource in PSFCH resource subset M=2 corresponds to the last PSFCH transmission occasion of one PSSCH.

[0083] In this embodiment, among slots {X+19, X+15, X+11} including F≧1 PSFCH resources, a candidate PSSCH transmission occasion is determined for slots X+19 and X+15 based on a first PSFCH resource subset. According to the first PSFCH resource subset (PSFCH resource subset 1) in slot X+19 including PSFCH resources, the determined candidate PSSCH transmission occasion is located in slots {X+14, X+15, X+16, X+17}. According to the first PSFCH resource subset (PSFCH resource subset 1) in slot X+15 including PSFCH resources, the determined candidate PSSCH transmission occasion is located in slots {X+10, X+11, X+12, X+13}.

[0084] In this embodiment, among slots {X+19, X+15, X+11} including F≧1 PSFCH resources, a candidate PSSCH transmission occasion is determined for slot X+11 according to a first PSFCH resource subset (PSFCH resource subset 1) and a second PSFCH resource subset (PSFCH resource subset M=2). The candidate PSSCH transmission occasion determined by the first PSFCH resource subset is located in slot {X+6, X+7, X+8, X+9}, and the candidate PSSCH transmission occasion determined by the second PSFCH resource subset is located in slot {X+2, X+3, X+4, X+5}. Therefore, in slot X+11, the candidate PSSCH transmission occasion determined based on the first PSFCH resource subset and the second PSFCH resource subset is located in slot {X+2, X+3, X+4, X+5, X+6, X+7, X+8, X+9}.

[0085] To summarize, in a slot {X+19, X+15, X+11} containing F≧1 PSFCH resources, all determined candidate PSSCH transmission occasions are located in slots {X+2, X+3, X+4, X+5, X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13, X+14, X+15, X+16, X+17} respectively.

[0086] UE1 reports HARQ-ACK information to the base station, and the HARQ-ACK information includes HARQ-ACK information of the candidate PSSCH transmission occasion. The terminal feeds back 16-bit HARQ-ACK to the base station, where each bit of HARQ-ACK corresponds to one candidate PSSCH transmission occasion among the candidate PSSCH transmission occasions located in slots {X+2, X+3, X+4, X+5, X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13, X+14, X+15, X+16, X+17}. The slot in which UE1 reports HARQ-ACK information to the base station is PUCCH slot n, and in PUCCH slot n, the terminal reports HARQ-ACK information to the base station via PUCCH or PUSCH.

[0087] Preferably, the candidate PSSCH transmission occasions are numbered, and the numbering rule is that the jth candidate PSSCH transmission occasion from the back in time is numbered j among all the candidate PSSCH transmission occasions determined by the slots including the PSFCH resources of F≧1. According to the numbering rule, the numbers of the candidate PSSCH transmission occasions in slots {X+2, X+3, X+4, X+5, X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13, X+14, X+15, X+16, X+17} are respectively {15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0}. Figure 7 is a schematic diagram of setting the numbers of further candidate PSSCH transmission occasions according to an embodiment of the present application. As shown in FIG. 7, bit 0 of the 16 HARQ bits corresponds to candidate PSSCH transmission occasion number 0, and bit 1 of the 16 HARQ bits corresponds to candidate PSSCH transmission occasion number 1, and so on.

[0088] In example 6, the first communication node is a terminal, the second communication node is a base station, and the terminal determines candidate PSSCH transmission occasions at the m-th PSFCH receiving occasion and the last PSFCH receiving occasion as an example to describe the transmission process of feedback information. In the embodiment, the step of the terminal reporting HARQ-ACK information to the base station includes: determining a slot including F≧1 PSFCH resources to be mapped to one slot n, the slot including PSFCH resources includes M≧2 PSFCH resource subsets, and for the slot including PSFCH resources, determining a candidate PSSCH transmission occasion corresponding to at least one PSFCH resource subset included in the slot. For at least one slot of the slots including the PSFCH resources, determining a candidate PSSCH transmission occasion corresponding to the first PSFCH resource subset in the slot. For at least one slot of the slots including the PSFCH resources, determining a candidate PSSCH transmission occasion corresponding to the first PSFCH resource subset and the second PSFCH resource subset in the slot. Each PSFCH resource in the first PSFCH resource subset corresponds to an m-th PSFCH transmission occasion of one PSSCH, where m is an integer between [1,M), and each PSFCH resource in the second PSFCH resource subset corresponds to a final PSFCH transmission occasion among the M PSFCH transmission occasions corresponding to one PSSCH, and before determining the value of m, the terminal receives control information transmitted from a base station, and the terminal determines the value of m according to the received control information and reports HARQ-ACK information to the base station, where the HARQ-ACK information includes HARQ-ACK information of the candidate PSSCH transmission occasions.

[0089] Next, the above process will be described in detail with reference to Fig. 4. The description of Fig. 4 itself refers to Example 1.

[0090] The terminal determines a slot including F≧1 PSFCH resources to be mapped to one slot n, and the slot including the PSFCH resource includes M≧2 PSFCH resource subsets. In Fig. 4, the slot including F≧1 PSFCH resources to be mapped to slot n is three slots, {X+19, X+15, X+11}. Each of the three slots includes M=2 PSFCH resource subsets, which are PSFCH resource subset 1 and PSFCH resource subset 2, respectively.

[0091] For M=2 and m=1, the first PSFCH resource subset corresponds to PSFCH resource subset 1 in Figure 4, and each PSFCH resource in PSFCH resource subset 1 corresponds to the m=1th PSFCH reception occasion of one PSSCH. The second PSFCH resource subset corresponds to PSFCH resource subset M (M=2) in Figure 4, and each PSFCH resource in PSFCH resource subset M=2 corresponds to the last PSFCH reception occasion of one PSSCH.

[0092] For M=2 and m=1, for slots X+19 and X+15 of slots {X+19, X+15, X+11}, the first PSFCH resource subset (PSFCH resource subset m=1) in slot X+19 that includes a PSFCH resource results in determined candidate PSSCH transmission occasions being located in slots {X+14, X+15, X+16, X+17}. The first PSFCH resource subset (PSFCH resource subset m=1) in slot X+15 that includes a PSFCH resource results in determined candidate PSSCH transmission occasions being located in slots {X+10, X+11, X+12, X+13}.

[0093] For M=2 and m=1, determine a candidate PSSCH transmission occasion based on a first PSFCH resource subset (PSFCH resource subset m=1) and a second PSFCH resource subset (PSFCH resource subset M=2) in slot X+11 among slots {X+19, X+15, X+11} containing F≧1 PSFCH resources. The candidate PSSCH transmission occasion determined by the first PSFCH resource subset is located in slots {X+6, X+7, X+8, X+9}, and the candidate PSSCH transmission occasion determined by the second PSFCH resource subset is located in slots {X+2, X+3, X+4, X+5}. Thus, in slot X+11, the candidate PSSCH transmission occasions determined based on the first PSFCH resource subset and the second PSFCH resource subset are located in slots {X+2, X+3, X+4, X+5, X+6, X+7, X+8, X+9}.

[0094] To summarize, in a slot {X+19, X+15, X+11} containing F≧1 PSFCH resources, all determined candidate PSSCH transmission occasions are located in slots {X+2, X+3, X+4, X+5, X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13, X+14, X+15, X+16, X+17} respectively.

[0095] UE1 reports HARQ-ACK information to the base station, and the HARQ-ACK information includes HARQ-ACK information of the candidate PSSCH transmission occasion. The terminal feeds back 16-bit HARQ-ACK to the base station, where each bit of HARQ-ACK corresponds to one candidate PSSCH transmission occasion among the candidate PSSCH transmission occasions located in slots {X+2, X+3, X+4, X+5, X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13, X+14, X+15, X+16, X+17}. The slot in which UE1 reports HARQ-ACK information to the base station is slot n, and in slot n, the terminal reports HARQ-ACK information to the base station via PUCCH or PUSCH.

[0096] Preferably, the candidate PSSCH transmission occasions are numbered, and the numbering rule is that among all the determined candidate PSSCH transmission occasions according to the slots including the PSFCH resources of F≧1, the jth candidate PSSCH transmission occasion from the back in time is numbered j. According to the numbering rule, the numbers of the candidate PSSCH transmission occasions in the slots {X+2, X+3, X+4, X+5, X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13, X+14, X+15, X+16, X+17} are {15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0}, respectively. As shown in FIG. 7, bit 0 of the 16 HARQ bits corresponds to candidate PSSCH transmission occasion number 0, and bit 1 of the 16 HARQ bits corresponds to candidate PSSCH transmission occasion number 1, and so on.

[0097] Preferably, the terminal can determine the above-mentioned m value in the following manner:

[0098] The terminal receives control information transmitted from a base station, the control information including a number of a PSFCH resource subset, and the terminal determines based on the received control information that the value m is equal to the number of the PSFCH resource subset or equal to the number of the PSFCH resource subset plus 1; or the terminal receives control information transmitted from a base station, the control information including a number of PSFCH transmission and reception occasions, and the terminal determines based on the received control information that the value m is equal to the number of the PSFCH transmission and reception occasions.

[0099] Preferably, the control information includes at least one of RRC signaling, SIB information, and DCI.

[0100] In Example 7, a method for a terminal to report HARQ-ACK information to a base station includes: determining a slot including F≧1 PSFCH resources to be mapped to one slot n, where the slot including the PSFCH resource includes M≧2 PSFCH resource subsets; for each of the slots including the PSFCH resource, determining candidate PSSCH transmission occasions based on the slot; deleting some candidate PSSCH transmission occasions from target candidate PSSCH transmission occasions, which are a set of all candidate PSSCH transmission occasions determined in the slot including F≧1 PSFCH resources; and reporting HARQ-ACK information to the base station for the remaining candidate PSSCH transmission occasions after deleting some candidate PSSCH transmission occasions from the target candidate PSSCH transmission occasions.

[0101] Preferably, the slot including the PSFCH resource includes M≧2 PSFCH resource subsets, where each PSFCH resource in the one PSFCH resource subset corresponds to a first PSFCH reception occasion of one PSSCH, and where each PSFCH resource in the one PSFCH resource subset corresponds to a second PSFCH reception occasion of one PSSCH, and by analogy therewith.

[0102] Next, the above process will be described in detail with reference to Fig. 4. The description of Fig. 4 itself refers to Example 1.

[0103] The terminal determines a slot including F≧1 PSFCH resources to be mapped to one slot n, and the slot including the PSFCH resource includes M≧2 PSFCH resource subsets. In Fig. 4, the slot including F≧1 PSFCH resources to be mapped to slot n is three slots, {X+19, X+15, X+11}. Each of the three slots includes M=2 PSFCH resource subsets, which are PSFCH resource subset 1 and PSFCH resource subset 2, respectively.

[0104] For each of the slots that include the PSFCH resource, determine candidate PSSCH transmission occasions based on the slot. All PSFCH resource subsets in slot X+19 include PSFCH resource subset 1 and PSFCH resource subset 2. The eight candidate PSSCH transmission occasions mapped to slot X+19 are located in slots {X+10, X+11, X+12, X+13, X+14, X+15, X+16, X+17}. The eight candidate PSSCH transmission occasions mapped to slot X+15 are located in slots {X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13}. The eight candidate PSSCH transmission occasions mapped to slot X+11 are located in slots {X+2, X+3, X+4, X+5, X+6, X+7, X+8, X+9}. For all PSFCH-containing slots corresponding to slot n, a total of 24 candidate PSSCH transmission occasions are determined.

[0105] The terminal deletes some candidate PSSCH transmission occasions from the 24 candidate PSSCH transmission occasions (target candidate PSSCH transmission occasions) and reports HARQ-ACK information for the remaining candidate PSSCH transmission occasions to the base station. The terminal reports the HARQ-ACK information to the base station via the PUCCH or PUSCH in slot n.

[0106] Preferably, the terminal deletes candidate PSSCH transmission occasions with some overlapping slot numbers, after which only 16 candidate PSSCH transmission occasions are reserved, and the corresponding slot numbers are {X+2, X+3, X+4, X+5, X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13, X+14, X+15, X+16, X+17} respectively.

[0107] In example 8, after deleting some of the candidate PSSCH transmission occasions in example 7, the slot numbers corresponding to the remaining candidate PSSCH transmission occasions are {X+2, X+3, X+4, X+5, X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13, X+14, X+15, X+16, X+17}, respectively.

[0108] The remaining candidate PSSCH transmission occasions are numbered, and the numbering rule is that the j-th candidate PSSCH transmission occasion from the back in time among the remaining candidate PSSCH transmission occasions is numbered j.

[0109] Among the remaining candidate PSSCH transmission occasions, the zeroth candidate PSSCH transmission occasion from the back in time is numbered 0, and among the remaining candidate PSSCH transmission occasions, the first candidate PSSCH transmission occasion from the back in time is numbered 1, by analogy.

[0110] The terminal feeds back a HARQ-ACK to the base station, and the fed back j-th bit HARQ-ACK is the HARQ-ACK of the candidate PSSCH transmission occasion with number j.

[0111] In Example 9, after deleting some of the candidate PSSCH transmission occasions in Example 7, the slot numbers corresponding to the remaining candidate PSSCH transmission occasions are {X+2, X+3, X+4, X+5, X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13, X+14, X+15, X+16, X+17}, respectively.

[0112] 2. Number the remaining candidate PSSCH transmission occasions.

[0113] The terminal feeds back N-bit HARQ-ACK information to the base station, and the 1-bit HARQ-ACK feedback corresponding to the j-th candidate PSSCH transmission occasion is placed at the j-th bit in the N-bit HARQ-ACK information.

[0114] By analogy, a 1-bit HARQ-ACK feedback corresponding to a candidate PSSCH transmission occasion numbered 0 is placed at the 0th bit in the N-bit HARQ-ACK information, and a 1-bit HARQ-ACK feedback corresponding to a candidate PSSCH transmission occasion numbered 1 is placed at the 1st bit in the N-bit HARQ-ACK information.

[0115] In Example 10, the description of the operations to be performed on the first communication node is as follows.

[0116] Based on the time domain position information of the PUCCH indicated by the DCI or RRC message, a PUCCH slot is determined, and based on the timing relationship between the PSFCH and the PUCCH indicated by the DCI or RRC message, a group of PSFCH slots to be mapped to one PUCCH slot are determined, and for each of the group of PSFCH slots, candidate PSSCH transmission occasions corresponding to each PSFCH slot are determined, and HARQ-ACK information is reported to the base station, where the HARQ-ACK information includes HARQ-ACK information of the candidate PSSCH transmission occasions.

[0117] Preferably, the group of PSFCH slots is one of a first set of PSFCH occasions corresponding to the PSSCH, a last set of PSFCH occasions corresponding to the PSSCH, and a set of a plurality of PSFCH occasions corresponding to the PSSCH.

[0118] Figure 8 is a schematic diagram of another slot setting according to an embodiment of the present application. When the group of PSFCH slots is a set of the first PSFCH occasions corresponding to PSSCH, the group of PSFCH slots is three slots corresponding to the first PSFCH occasions in Figure 8. The candidate PSSCH transmission occasions corresponding to the three PSFCH slots correspond to slots {X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13, X+14, X+15, X+16, X+17}.

[0119] Fig. 9 is a schematic diagram of further slot setting according to an embodiment of the present application. When the group of PSFCH slots is a set of the last PSFCH occasions corresponding to PSSCH, the group of PSFCH slots is three slots corresponding to the last (second) PSFCH occasions in Fig. 9. The candidate PSSCH transmission occasions corresponding to the three PSFCH slots correspond to slots {X+2, X+3, X4, X+5, X+6, X+7, X+8, X+9, X+10, X+11, X+12, X+13}.

[0120] In one embodiment, FIG. 10 is a structural block diagram of an information transmission device according to an embodiment of the present application. This embodiment is applied to a first communication node. As shown in FIG. 10, this embodiment includes a first determination module 1010, a second determination module 1020, and a transmitter 1030.

[0121] Here, the first determining module 1010 is configured to determine at least one second feedback slot mapped to the first feedback slot, where each second feedback slot includes at least two feedback resource subsets.

[0122] A second determining module 1020 is configured to determine candidate PSSCH transmission occasions corresponding to at least one feedback resource subset in each of the second feedback slots.

[0123] A transmitter 1030 is configured to transmit feedback information corresponding to the candidate PSSCH transmission occasions to a second communication node in the first feedback slot.

[0124] In one embodiment, the second feedback slot including at least two feedback resource subsets includes each feedback resource subset corresponding to one PSFCH reception occasion of a candidate PSSCH transmission occasion corresponding to each feedback resource in each feedback resource subset.

[0125] In one embodiment, the second determination module 1020 is configured to determine candidate PSSCH transmission occasions corresponding to one feedback resource subset in each of the second feedback slots, where each feedback resource in the one feedback resource subset corresponds to a first-time PSFCH reception occasion corresponding to the candidate PSSCH transmission occasion.

[0126] In one embodiment, the second determination module 1020 is configured to determine a candidate PSSCH transmission occasion corresponding to one feedback resource subset in each of the second feedback slots, where each feedback resource in the one feedback resource subset corresponds to a final PSFCH reception occasion corresponding to the candidate PSSCH transmission occasion.

[0127] In one embodiment, the second determination module 1020 is configured to determine a candidate PSSCH transmission occasion corresponding to the m-th feedback resource subset in each of the second feedback slots, where 1≦m≦M, and M is the number of feedback resource subsets included in each of the second feedback slots.

[0128] In one embodiment, the second determination module 1020 is configured to determine candidate PSSCH transmission occasions corresponding to a first feedback resource subset in at least one second feedback slot, and to determine candidate PSSCH transmission occasions corresponding to the first feedback resource subset and a second feedback resource subset in at least one second feedback slot, where each feedback resource in the first feedback resource subset corresponds to the first PSFCH reception occasion of the candidate PSSCH transmission occasion, and each feedback resource in the second feedback resource subset corresponds to the last PSFCH reception occasion of the candidate PSSCH transmission occasion.

[0129] In one embodiment, the second determination module 1020 is configured to determine candidate PSSCH transmission occasions corresponding to a first feedback resource subset in at least one second feedback slot, and to determine candidate PSSCH transmission occasions corresponding to the first feedback resource subset and a second feedback resource subset in at least one second feedback slot, where each feedback resource in the first feedback resource subset corresponds to the m-th PSFCH reception occasion of the candidate PSSCH transmission occasion, 1 ≤ m < M, and M is the number of feedback resource subsets included in each second feedback slot, and each feedback resource in the second feedback resource subset is the last PSFCH reception occasion corresponding to the candidate PSSCH transmission occasion.

[0130] In one embodiment, the method for determining the m value includes determining the value of m based on the received control information.

[0131] In one embodiment, the information type of the control information includes at least one of the following: radio resource control (RRC) signaling, system information block (SIB) information, and downlink control information (DCI).

[0132] In one embodiment, the control information carries at least one of a feedback resource subset number and a number of PSFCH reception occasions.

[0133] In one embodiment, determining the value of m based on the received control information includes one of: determining that the value of m is a number of a feedback resource subset; determining that the value of m is a number equal to the number of the feedback resource subset plus 1; and determining that the value of m is a number representing the number of PSFCH receiving occasions.

[0134] In one embodiment, the number of the candidate PSSCH transmission occasion is determined by the period value of the PSFCH, the fth second feedback slot sorted in reverse order in the time domain, and the n f Determining a number of the candidate PSSCH transmission occasions based on the th candidate PSSCH transmission occasion.

[0135] In one embodiment, among all the candidate PSSCH transmission occasions, the jth candidate PSSCH transmission occasion sorted in reverse time domain order has an index j.

[0136] In one embodiment, the bit number of the feedback information is equal to the number of the candidate PSSCH transmission occasions.

[0137] In one embodiment, sorting is performed in order of time domain, and for a first second feedback slot, the candidate PSSCH transmission occasions are candidate PSSCH transmission occasions corresponding to a first feedback resource subset and a second feedback resource subset; sorting is performed in order of time domain, and for other second feedback slots other than the first second feedback slot, the candidate PSSCH transmission occasions are candidate PSSCH transmission occasions corresponding to a first feedback resource subset.

[0138] In one embodiment, the first determination module 1010 includes a first determination unit configured to determine a first feedback slot based on time domain location information of a PUCCH indicated by a DCI or an RRC message, and a second determination unit configured to determine at least one second feedback slot to be mapped to the first feedback slot based on a timing relationship between a PSFCH and a PUCCH indicated by a DCI or an RRC message, where the first feedback slot is a PUCCH slot, the at least one second feedback slot is a slot including a PSFCH resource, and the at least two feedback resource subsets are PSFCH resource subsets.

[0139] The information transmission device of this embodiment is configured to realize the information transmission method of the embodiment shown in Figure 2, and the realization principle and technical effects of the information transmission device of this embodiment are similar, so the description is omitted here.

[0140] In one embodiment, Fig. 11 is a structural block diagram of another information transmission device according to an embodiment of the present application. This embodiment is applied to a second communication node. As shown in Fig. 11, this embodiment includes a receiver 1110.

[0141] The receiver 1110 is configured to receive feedback information corresponding to a candidate PSSCH transmission occasion transmitted from a first communication node in a first feedback slot.

[0142] The information transmission device of this embodiment is configured to realize the information transmission method of the embodiment shown in Figure 3, and the realization principle and technical effects of the information transmission device of this embodiment are similar, so the description is omitted here.

[0143] FIG. 12 is a structural schematic diagram of an information transmission device according to an embodiment of the present application. As shown in FIG. 12, the device according to the present application includes a processor 1210 and a memory 1220. The number of processors 1210 in the device may be one or more, and FIG. 12 takes one processor 1210 as an example. The number of memories 1220 in the device may be one or more, and FIG. 12 takes one memory 1220 as an example. The processor 1210 and memory 1220 of the device can be connected by a bus or other manner, and FIG. 12 takes the connection via a bus as an example. In the embodiment, the device may be a terminal side (e.g., a user device).

[0144] The memory 1220 can be used as a computer-readable storage medium to store software programs, computer-executable programs and modules, such as program instructions / modules corresponding to the device of any embodiment of the present application (e.g., the first determination module 1010, the second determination module 1020 and the transmitter 1030 in the information transmission device). The memory 1220 may include a program storage area and a data storage area, where the program storage area can store an operating system, an application program required for at least one function, and the data storage area can store data generated based on the use of the device, etc. The memory 1220 may also include a high-speed random access memory, and may further include a non-volatile memory, such as at least one magnetic disk storage device, flash memory, or other non-volatile solid-state storage device. In some embodiments, the memory 1220 can include memories provided remotely to the processor 1210, and these remote memories can be connected to the device via a network. Examples of the above network may include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0145] When the information transmission device is a first communication node, the above-mentioned device can be configured to execute the information transmission method applied to the first communication node according to any of the above embodiments, and has corresponding functions and effects.

[0146] When the information transmission device is a second communication node, the above-mentioned device is configured to execute the information transmission method applied to the second communication node according to any of the above embodiments, and has corresponding functions and effects.

[0147] An embodiment of the present application further provides a storage medium including computer-executable instructions, which, when executed by a computer processor, are used to perform an information transmission method applied to a first communication node, the method including: determining at least one second feedback slot mapped to a first feedback slot, each second feedback slot including at least two feedback resource subsets; determining candidate PSSCH transmission occasions corresponding to the at least one feedback resource subset in each of the second feedback slots; and transmitting feedback information corresponding to the candidate PSSCH transmission occasions in the first feedback slot to a second communication node.

[0148] An embodiment of the present application further provides a storage medium including computer-executable instructions, which when executed by a computer processor, are used to perform an information transmission method applied to a second communication node, the method including receiving feedback information corresponding to candidate PSSCH transmission occasions sent from the first communication node in a first feedback slot.

[0149] Those skilled in the art will appreciate that the term user terminal includes any suitable type of wireless user equipment, including, for example, a mobile phone, a portable data processing device, a portable network browser, or a vehicle mounted mobile station.

[0150] In general, various embodiments of the present application may be implemented in hardware or special purpose circuits, software, logic, or any combination thereof For example, some aspects may be implemented in hardware and other aspects may be implemented in firmware or software executable by a controller, microprocessor or other computing device, and the present application is not limited thereto.

[0151] Embodiments of the present application may be implemented by execution of computer program instructions by a data processor of a mobile device, for example in a processor entity, by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or target code written in any combination of one or more programming languages.

[0152] Any logic flow block diagrams in the drawings of this application may represent program steps, interconnected logic circuits, modules, and functions, or combinations of program steps and logic circuits, modules, and functions. The computer program may be stored in a memory. The memory may have any type suitable for the local technology environment and may be implemented with any suitable data storage technology. For example, it may include, but is not limited to, a read-only memory (ROM), a random access memory (RAM), an optical storage device and system (Digital Video Disc (DVD) or Compact Disc (CD)), etc. The computer readable medium may include a non-transitory storage medium. The data processor may be of any type suitable for the local technology environment, such as, but not limited to, a general purpose computer, a special purpose computer, a microprocessor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), and a processor based on a multi-core processor architecture.

[0153] The above is only a preferred embodiment of the present invention, and does not limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modifications, equivalent replacements, improvements, etc. made within the principle of the present application should be included in the protection scope of the present application.

Claims

1. An information transmission method applied to a first communication node, comprising: determining at least one second feedback slot mapped to the first feedback slot, each second feedback slot including at least two feedback resource subsets; determining candidate PSSCH (Physical Sidelink Shared Channel) transmission occasions corresponding to at least one feedback resource subset in each second feedback slot; transmitting feedback information corresponding to the candidate PSSCH transmission occasions to a second communication node in the first feedback slot. Method of information transmission.

2. Each second feedback slot includes at least two feedback resource subsets. each feedback resource subset corresponds to one physical sidelink feedback channel (PSFCH) reception occasion of a candidate PSSCH transmission occasion corresponding to each feedback resource in the respective feedback resource subset. The method of claim 1.

3. Determining a candidate PSSCH transmission occasion corresponding to at least one feedback resource subset in each second feedback slot includes: determining a candidate PSSCH transmission occasion corresponding to a feedback resource subset in each second feedback slot; Each feedback resource in the one feedback resource subset corresponds to an initial PSFCH reception occasion corresponding to the candidate PSSCH transmission occasion. The method of claim 1.

4. Determining a candidate PSSCH transmission occasion corresponding to at least one feedback resource subset in each second feedback slot includes: determining a candidate PSSCH transmission occasion corresponding to a feedback resource subset in each second feedback slot; Each feedback resource in the feedback resource subset corresponds to a final PSFCH reception occasion corresponding to the candidate PSSCH transmission occasion. The method of claim 1.

5. Determining a candidate PSSCH transmission occasion corresponding to at least one feedback resource subset in each second feedback slot includes: determining candidate PSSCH transmission occasions corresponding to an m-th feedback resource subset in each of the second feedback slots, where 1≦m≦M, and M is a number of feedback resource subsets included in each of the second feedback slots; The method of claim 1.

6. Determining a candidate PSSCH transmission occasion corresponding to at least one feedback resource subset in each second feedback slot includes: determining a candidate PSSCH transmission occasion corresponding to the first feedback resource subset in the at least one second feedback slot; determining candidate PSSCH transmission occasions corresponding to the first feedback resource subset and the second feedback resource subset in at least one second feedback slot; Each feedback resource in the first feedback resource subset corresponds to a first PSFCH reception occasion of the candidate PSSCH transmission occasion; Each feedback resource in the second feedback resource subset corresponds to a final PSFCH reception occasion of the candidate PSSCH transmission occasion. The method of claim 1.

7. Determining a candidate PSSCH transmission occasion corresponding to at least one feedback resource subset in each second feedback slot includes: determining a candidate PSSCH transmission occasion corresponding to the first feedback resource subset in the at least one second feedback slot; determining candidate PSSCH transmission occasions corresponding to the first feedback resource subset and the second feedback resource subset in at least one second feedback slot; Each feedback resource in the first feedback resource subset corresponds to an m-th PSFCH reception occasion of the candidate PSSCH transmission occasion, where 1≦m<M, and M is the number of feedback resource subsets included in each of the second feedback slots; Each feedback resource in the second feedback resource subset is a final PSFCH reception occasion corresponding to the candidate PSSCH transmission occasion. The method of claim 1.

8. The method of determining the value of m includes determining the value of m based on the received control information; The method according to claim 5 or 7.

9. The information type of the control information includes at least one of radio resource control (RRC) signaling, system information block (SIB) information, and downlink control information (DCI); The method according to claim 8.

10. The control information carries at least one of a feedback resource subset number and a number of PSFCH reception occasions. The method according to claim 8.

11. Determining the value of m based on the received control information determining that the value of m is the number of the feedback resource subset; determining a value of m to be the number of the feedback resource subset plus 1; determining that the value of m is a number of the PSFCH reception occasions. The method of claim 10.

12. The method of determining the candidate PSSCH transmission occasion number is as follows: A periodic value of the PSFCH, an f-th second feedback slot sorted in reverse order in the time domain, and n ｆ determining a number of candidate PSSCH transmission occasions based on the second candidate PSSCH transmission occasion; The method of claim 1.

13. Among all the candidate PSSCH transmission occasions, the j-th candidate PSSCH transmission occasion, sorted in reverse time domain order, has number j. The method of claim 1.

14. a bit number of the feedback information is equal to a number of the candidate PSSCH transmission occasions; The method of claim 1.

15. sorting in time domain order, for a first second feedback slot, the candidate PSSCH transmission occasions are candidate PSSCH transmission occasions corresponding to the first feedback resource subset and the second feedback resource subset; sorting in time domain order, and for other second feedback slots other than the first second feedback slot, the candidate PSSCH transmission occasion is a candidate PSSCH transmission occasion corresponding to a first feedback resource subset; The method according to claim 6 or 7.

16. Determining at least one second feedback slot mapped to the first feedback slot includes: Determining a first feedback slot according to time domain location information of a physical uplink control channel (PUCCH) indicated by a DCI or an RRC message; and determining at least one second feedback slot to be mapped to the first feedback slot based on a timing relationship between a PSFCH and a PUCCH indicated by a DCI or an RRC message; the first feedback slot is a PUCCH slot, the at least one second feedback slot is a slot including a PSFCH resource, and the at least two feedback resource subsets are PSFCH resource subsets. The method of claim 1.

17. An information transmission method applied to a second communication node, comprising: receiving feedback information corresponding to candidate PSSCH transmission occasions transmitted from a first communication node in a first feedback slot; Method of information transmission.

18. A memory and at least one processor, the memory is configured to store at least one program; The at least one program, when executed by the at least one processor, causes the at least one processor to implement the method according to any one of claims 1 to 16 or 17. Information transmission equipment.

19. A computer program is stored which, when executed by a processor, implements the method according to any one of claims 1 to 16 or 17. storage medium.

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