Sidelink transmission method, apparatus, and terminal

Abstract

The application discloses a kind of sidelink transmission method, device and terminal, belong to mobile communication field, the sidelink transmission method of the embodiment of the application includes: terminal obtains the first information of physical sidelink control channel transmission in the resource unit of sidelink, the first information includes first sidelink control information;Wherein, the resource unit includes N time slots;The terminal determines the transmission information of M physical sidelink shared channel in the resource unit of the physical sidelink control channel scheduling according to the first information, N is greater than or equal to M.

Description

Technical Field

[0001] This application belongs to the field of mobile communication technology, specifically relating to a side-link transmission method, apparatus and terminal. Background Technology

[0002] A sidelink, also known as a secondary link, direct link, or lateral link, is used for direct data transmission between terminals without going through network equipment. The sidelink interface is also called the PC5 interface. On a sidelink, the UE sends sidelink data by transmitting the Physical Sidelink Control Channel (PSCCH), which contains Sidelink Control Information (SCI), and schedules the transmission of the Physical Sidelink Shared Channel (PSSCH).

[0003] New subcarrier spacing (SCS) has been introduced in the 52.6 GHz-71 GHz deployment band, including 480 kHz and 960 kHz. These newly introduced SCSs require new resource units, and to improve spectral efficiency, a single PSCCH carrying an SCI can schedule multiple PSSCHs. Therefore, it is necessary to address the resource scheduling problem of these new resource units during sidelink transmission. Summary of the Invention

[0004] This application provides a side-link transmission method, apparatus, and terminal that can solve the resource scheduling problem when scheduling multiple PSSCHs through one PSCCH during side-link transmission.

[0005] Firstly, a side-link transmission method is provided for application in a terminal, the method comprising:

[0006] The terminal acquires first information transmitted through the physical sidelink control channel within the resource unit of the sidelink, the first information including first sidelink control information; wherein, the resource unit includes N time slots;

[0007] The terminal determines the transmission information of M physical side-link shared channels within the resource unit scheduled by the physical side-link control channel based on the first information, where N is greater than or equal to M.

[0008] Secondly, a side-link transmission device is provided, comprising:

[0009] The acquisition module is used to acquire first information transmitted in the physical sidelink control channel within the resource unit of the sidelink, the first information including first sidelink control information; wherein, the resource unit includes N time slots;

[0010] The transmission module is used to determine, based on the first information, the transmission information of M physical side-link shared channels within the resource unit scheduled by the physical side-link control channel, where N is greater than or equal to M.

[0011] Thirdly, a terminal is provided, comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method described in the first aspect.

[0012] Fourthly, a terminal is provided, including a processor and a communication interface, wherein the processor is used to determine, based on the first information, the transmission information of M physical side-link shared channels within the resource unit scheduled by the physical side-link control channel, where N is greater than or equal to M; the communication interface is used to acquire the first information transmitted by the physical side-link control channel within the resource unit of the side-link, the first information including first side-link control information; wherein the resource unit includes N time slots.

[0013] Fifthly, a side-link transmission system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the side-link transmission method as described in the first aspect.

[0014] In a sixth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect.

[0015] In a seventh aspect, a chip is provided, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the method as described in the first aspect.

[0016] Eighthly, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the side-link transmission method as described in the first aspect.

[0017] In this embodiment of the application, the terminal obtains the first information of the PSCCH transmission in the resource unit of the side link, the first information including the first SCI; the terminal determines the transmission information of M PSSCHs in the resource unit scheduled by the PSCCH according to the first information, so that multiple PSSCHs in the resource unit can be scheduled through one PSCCH, making full use of the time and frequency resources in the resource unit and improving the utilization rate of resources. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a wireless communication system applicable to the embodiments of this application;

[0019] Figure 2 This is a flowchart illustrating a side-link transmission method provided in an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the structure of a side-link transmission device provided in an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of a communication device structure provided in an embodiment of this application;

[0022] Figure 5 A schematic diagram of the structure of a terminal to implement an embodiment of this application. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0024] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0025] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and NR terminology is used in most of the following description; however, these technologies can also be applied to applications beyond NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0026] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. Terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the specific type of terminal 11 is not limited in this embodiment. Network-side equipment 12 may include access network equipment or core network equipment. Access network equipment 12 may also be referred to as radio access network equipment, radio access network (RAN), radio access network function, or radio access network unit. Access network equipment 12 may include base stations, WLAN access points, or WiFi nodes, etc. Base stations may be referred to as Node B, evolved Node B (eNB), access point, base transceiver station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B node, home evolved B node, Transmitting Receiving Point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only a base station in an NR system is used as an example for description, and the specific type of base station is not limited.Core network equipment may include, but is not limited to, at least one of the following: core network node, core network function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), and Binding Support. Core network functions (BSF), application functions (AF), etc. It should be noted that this application embodiment only uses core network equipment in the NR system as an example for description, and does not limit the specific type of core network equipment.

[0027] The following description, in conjunction with the accompanying drawings, details the side-link transmission method, apparatus, and terminal provided in this application through some embodiments and application scenarios.

[0028] like Figure 2 As shown, this application provides a side-link transmission method. The execution subject of this method can be a terminal performing side-link communication, including a sending end and a receiving end. In other words, this method can be executed by software or hardware installed on the terminal.

[0029] Step 210: The terminal obtains the first information transmitted in the PSCCH within the resource unit of the side link, the first information including the first SCI; wherein, the resource unit includes N time slots.

[0030] This application defines a resource unit for a side link, the resource unit including N time slots, where N can be specified by the protocol or configured by a higher layer on the network side, for example, N=4 or 5.

[0031] The resource unit may be a new SCS introduced for the 52.6GHz-71GHz deployment band, including 480kHz and 960kHz, and the time slots included in the resource unit are time slots corresponding to the new SCS.

[0032] Furthermore, the temporal location of each physical channel within the resource unit has been determined;

[0033] The physical channel may include at least one of the following:

[0034] PSCCH, which carries the first SCI and can be used to schedule multiple PSCCHs;

[0035] PSSCH;

[0036] Physical Sidelink Feedback Channel (PSFCH);

[0037] Automatic Gain Control (AGC) has a power adjustment function, specifically manifested in the repeated transmission of the transmission content carried by at least one of the following channels: PSCCH, PSSCH, PSFCH.

[0038] A protection symbol (GAP) may be set between PSSCH and PSFCH.

[0039] Step 220: The terminal determines the transmission information of M PSSCHs within the resource unit scheduled by the PSCCH based on the first information, wherein N is greater than or equal to M.

[0040] The M can be specified by the protocol or configured by higher layers on the network side, or dynamically or implicitly displayed by SCI or Downlink Control Information (DCI).

[0041] It should be understood that the transmission information may include the time domain resources of the M PSSCHs, the frequency domain resources of the M PSSCHs, the transmission mode of the M PSSCHs, etc.

[0042] The terminal can send data from the side link through the M PSSCHs according to the transmission information to realize side link communication.

[0043] As can be seen from the technical solutions provided by the above embodiments of the present invention, the embodiments of the present invention obtain the first information of PSCCH transmission in the resource unit of the side link through the terminal, the first information including the first SCI; the terminal determines the transmission information of M PSSCHs in the resource unit scheduled by the PSCCH according to the first information, thereby enabling multiple PSSCHs in the resource unit to be scheduled through one PSCCH, making full use of the time and frequency resources in the resource unit and improving the utilization rate of resources.

[0044] Based on the above embodiments, the implementation methods for determining the transmission information of the M PSSCHs according to the first information in step 220 can be varied. This application only provides a few specific implementation methods.

[0045] In one implementation, step 220 may include:

[0046] Based on the first information, the time-domain resources of the M PSSCHs are determined.

[0047] The time-domain resources include the first time slot where the M PSSCHs are located.

[0048] The determination of the time-domain resources of the M PSSCHs may include:

[0049] Determine the first time slot where the M PSSCHs are located;

[0050] Determining the correspondence between the time-domain resources that can transmit PSSCH in the first time slot and the PSSCH may include determining the symbol positions of the PSSCH that can be transmitted in the first time slot.

[0051] There are many ways to determine the first time slot, and this application only provides a few specific implementation methods.

[0052] In one implementation, the time slots containing the M PSSCHs are all N time slots in the resource unit.

[0053] In another implementation, when the M first time slots are consecutive time slots, the first first time slot is determined based on the second time slot where the PSCCH is located and the first offset; then, other first time slots are determined based on the first first time slot; wherein, the first offset is used to indicate the offset between the first first time slot and the second time slot, that is, the number of offset time slots, and the first offset can be indicated by the first SCI or DCI, or can be specified by the protocol or configured by the higher layer on the network side.

[0054] In another implementation, each first time slot is determined based on the second time slot where the PSCCH is located and the first offset group corresponding to the M PSSCHs; wherein the first offset group includes the offset between each first time slot and the second time slot.

[0055] The first offset group can be obtained in various ways, including by the first SCI or DCI indication, or by protocol specification or higher-level network configuration. This application provides only one implementation method:

[0056] Obtain multiple configured first offset groups, which may be specified by the protocol or configured by higher layers on the network side;

[0057] The first offset group corresponding to the M PSSCHs is determined from the plurality of first offset groups according to the instruction information. For example, two first offset groups are configured by the network side higher layer: {A1, A2} and {A3, A4}. One of the two first offset groups, {A1, A2}, is selected as the first offset group corresponding to the M PSSCHs according to the instruction information. Then, based on the position of the second time slot where the PSSCH is located, the corresponding first time slot is determined according to offsets A1 and A2 respectively.

[0058] The indication information is at least one of the following:

[0059] The first SCI;

[0060] DCI.

[0061] In another implementation, each first time slot is determined based on the index value corresponding to each first time slot, wherein the index value of each first time slot may be specified by the protocol or configured by the network-side device, or may be determined based on the indication information of the first SCI or DCI.

[0062] In one implementation, the method for obtaining the index value corresponding to each first time slot includes:

[0063] Multiple bitmap sequences are obtained, which are used to indicate the index value corresponding to each first time slot. These bitmap sequences can be specified by the protocol or configured by higher layers on the network side. For example, if the resource unit includes N = 4 time slots, the configured multiple bitmap sequences include {1,0,1,0} and {1,1,1,1}, where 1 indicates that the index value of the corresponding time slot is the index value of the corresponding first time slot. {1,0,1,0} indicates that the index values ​​of the M first time slots are the index values ​​of the first and third time slots, and {1,1,1,1} indicates that the M first time slots are all N time slots in the resource unit.

[0064] The bit mapping sequence corresponding to the M PSSCHs is determined from the plurality of bit mapping sequences according to the indication information. Taking the plurality of bit mapping sequences configured as described above, including {1,0,1,0} and {1,1,1,1}, as an example, if the PSCCH schedules 2 PSSCHs, the indication information can indicate that the bit mapping sequence corresponding to the 2 PSSCHs is {1,0,1,0}; if the PSCCH schedules 4 PSSCHs, the indication information indicates that the bit mapping sequence corresponding to the 2 PSSCHs is {1,1,1,1}.

[0065] The indication information includes at least one of the following:

[0066] The first SCI;

[0067] DCI.

[0068] In another embodiment, step 220 may further include:

[0069] Based on the first information, the frequency domain resources of the M PSSCHs are determined.

[0070] The frequency domain resources of the M PSSCHs may include the sub-channels or physical resource blocks (PRBs) corresponding to the M PSSCHs.

[0071] In one implementation, determining the frequency domain resources of the M PSSCHs includes:

[0072] Based on the first sub-channel corresponding to the PSCCH and the second offset, determine the second sub-channel corresponding to the M PSSCHs; wherein, the first sub-channel is the smallest sub-channel where the PSCCH is located, and the second sub-channel is the smallest sub-channel where the M PSSCHs are located; here, the second offset is used to indicate the offset between the index value of the first sub-channel and the index value of the second sub-channel.

[0073] The frequency domain resources of the M PSSCHs are determined based on the second sub-channel and the number of sub-channels occupied by the M PSSCHs.

[0074] In another implementation, determining the frequency domain resources of the M PSSCHs further includes:

[0075] Based on the first PRB corresponding to the PSCCH and the second offset, determine the second PRB corresponding to the M PSSCHs; wherein, the first PRB is the smallest PRB where the PSCCH is located, and the second PRB is the smallest PRB where the M PSSCHs are located, and the second offset is used to indicate the offset between the index value of the first PRB and the index value of the second PRB.

[0076] The frequency domain resources of the M PSSCHs are determined based on the second PRB and the number of PRBs occupied by the M PSSCHs.

[0077] It should be understood that two second offsets can be set separately for the sub-channel and the PRB to determine the second sub-channel and the second PRB.

[0078] It should be understood that the minimum subchannel mentioned in the embodiments of this application refers to the subchannel with the smallest index value, and the minimum PRB refers to the PRB with the smallest index value.

[0079] In another implementation, the second sub-channel is the same as the first sub-channel, or the second PRB is the same as the first PRB.

[0080] In another implementation, the M PSSCHs have the same frequency domain resources, that is, each PSSCH corresponds to the same second sub-channel and / or the same second PRB.

[0081] The second offset, the number of sub-channels, and the number of PRBs are determined by at least one of the following:

[0082] The first SCI;

[0083] DCI;

[0084] The agreement stipulates;

[0085] Network-side high-level configuration.

[0086] In another embodiment, step 220 may further include:

[0087] Based on the first information, the transmission mode of the M PSSCHs is determined.

[0088] The transmission modes of the M PSSCHs can be varied. This application only provides two transmission modes as examples:

[0089] Transmission mode 1: The M PSSCHs correspond one-to-one with the M Transport Blocks (TBs), that is, each PSSCH transmits a different TB, there are no duplicate TBs, and one TB is mapped to one PSSCH.

[0090] Transmission Mode 2: The M PSSCHs are used to repeatedly transmit a transport block, that is, a TB is mapped to each PSSCH, and different PSSCHs transmit the same TB.

[0091] The transmission mode of the M PSSCHs can be determined by at least one of the following:

[0092] The first SCI;

[0093] DCI;

[0094] The agreement stipulates;

[0095] Network-side high-level configuration.

[0096] In another embodiment, step 220 further includes:

[0097] Based on the first information, at least one of the following pieces of information is determined:

[0098] The M PSSCHs are mapped to the corresponding TB resource elements (REs);

[0099] The spatial information of the M PSSCHs;

[0100] The priority of the M PSSCHs;

[0101] Reserved time and frequency resources for PSSCH, wherein the reserved PSSCH can be used for PSSCH retransmission scheduling, etc.

[0102] The symbol length of the demodulation reference signal (DMRS) of the M PSSCHs;

[0103] The modulation and coding scheme (MCS) of the M PSSCHs;

[0104] The symbol overhead of the PSFCH in the first time slot where the M PSSCHs are located;

[0105] The format and scaling factor of the second SCI carried by the M PSSCHs, wherein the SCI format may include 2-A, 2-B, etc., and the scaling factor is used to calculate the number of REs occupied by the second SCI;

[0106] The temporal domain resources of the DMRS of the PSSCHs in the first time slot where the M PSSCHs are located;

[0107] The time-frequency resources of the Channel State Information Reference Signal (CSI-RS) for the M first time slots;

[0108] The time-frequency resources of the phase tracking reference signal (PT-RS) in the M first time slots;

[0109] The reservation period for the resources reserved in the M first time slots;

[0110] The time-frequency patterns of the demodulation reference signals of the M first time slots;

[0111] The ports of the demodulation reference signals for the M first time slots.

[0112] The following sections explain how the above information is determined for different transmission modes.

[0113] For transmission mode 1:

[0114] In one implementation, when determining the REs of the M TBs, the REs used for PSSCH transmission in the TBs are determined based on at least one of the following:

[0115] The number of REs occupied by the PSCCH;

[0116] The number of REs represented by the DMRS of the PSCCH;

[0117] The index value of the first time slot in the resource unit;

[0118] The M;

[0119] The N.

[0120] In one implementation, the spatial information of the M PSSCHs is determined by the first SCI uniformly instructing the M PSSCHs or by the first SCI individually instructing the M PSSCHs.

[0121] In one implementation, the priorities of the M PSSCHs are determined by the first SCI to uniformly instruct the M PSSCHs to have the same priority, or by the first SCI to separately instruct the M PSSCHs to determine their respective priorities.

[0122] In one implementation, the reserved PSSCH time-frequency resources are determined by at least one of the following:

[0123] The time-frequency resources of the reserved PSSCH are determined by the indication of the first SCI;

[0124] The time-frequency resource of the first PSSCH in the reserved PSSCH time-frequency resources is determined by the indication of the first SCI.

[0125] The time-frequency pattern of the reserved PSSCH time-frequency resources is the same as that of the M PSSCH time-frequency resources.

[0126] In one implementation, the symbol length of the DMRS of the M PSSCHs is determined by at least one of the following:

[0127] The symbol length of the DMRS of the M PSSCHs is determined by the first SCI uniformly instructing the M PSSCHs, or by the first SCI individually instructing the M PSSCHs.

[0128] Based on the first SCI indication, the symbol length of the DMRS of the M PSSCHs is determined from the candidate symbol lengths; wherein the candidate symbol lengths are specified by the protocol or configured by the higher layer on the network side.

[0129] In one implementation, the MCS of the M PSSCHs is determined by the unified indication of the first SCI to the M PSSCHs, or by the individual indication of the first SCI to the M PSSCHs.

[0130] In one implementation, the PSFCH symbol overhead of the time slots containing the M PSSCHs is determined by the unified indication of the first SCI to the M PSSCHs, or by the individual indication of the first SCI to the M PSSCHs.

[0131] In one implementation, the format and scaling factor of the second SCI carried by the M PSSCHs include at least one of the following:

[0132] Each PSSCH carries the corresponding second SCI;

[0133] A second SCI is carried by a designated PSSCH among the M PSSCHs; wherein the designated PSSCH is specified by the protocol or configured by a higher layer on the network side.

[0134] As can be seen, for transmission mode 1, the indication content of the first SCI may include the same information uniformly indicating the M PSSCHs, or it may include the above information corresponding to each of the M PSSCHs. See Table 1 below:

[0135] Table 1

[0136] allocation of time-domain resources M first time slots Frequency domain resource allocation M PSSCHs indicate the same frequency domain resources Airspace information M PSSCHs indicate the same or different beam information Priority M PSSCH indicators have the same or different priorities Resource reservation period Using M PSSCHs as the resource reservation unit DMRS time-frequency pattern M PSSCH indicators have the same DMRS time-frequency pattern DMRS port For M ports that indicate the same or different DMRS using PSSCH. MCS For M PSSCHs, indicate the same or different MCS Symbolic overhead of PSFCH The symbol overhead for M PSSCHs indicating the same or different PSFCHs The format of the second SCI For M PSSCHs, the format of the second SCI is the same or different. The proportion factor of the second SCI For M PSSCH indicators, the same or different proportional systems

[0137] The content indicated by the second SCI can vary. In one embodiment, the second SCI is used to indicate at least one of the following pieces of information for the M PSSCHs:

[0138] The source identifier (ID) of the M PSSCHs;

[0139] The target IDs of the M PSSCHs;

[0140] The region IDs of the M PSSCHs;

[0141] The communication range of the M PSSCHs;

[0142] The process numbers of the M PSSCH Hybrid Automatic Repeat Request (HARQ) processes;

[0143] The M PSSCHs have New Data Indicators (NDI) and Redundancy Versions (RV).

[0144] The transmission types of the M PSSCHs;

[0145] The HARQ feedback enable or disable flags of the M PSSCHs;

[0146] The CSI requests for the M PSSCHs.

[0147] In one implementation, the second SCI is also used to indicate that the M PSSCHs have the same source ID, destination ID, region ID, and communication range.

[0148] In one implementation, the HARQ process number of the M PSSCHs is determined by at least one of the following:

[0149] The corresponding HARQ process number is determined by the second SCI carried by each PSSCH;

[0150] When the HARQ process numbers of the M PSSCHs are consecutive, the HARQ process number of the first PSSCH among the M PSSCHs is indicated by the second SCI, and the HARQ process numbers of the remaining PSSCHs are determined based on the HARQ process number of the first PSSCH. For example, the HARQ process numbers of the remaining PSSCHs can be determined by incrementing the HARQ process number of the first PSSCH by 1.

[0151] In one implementation, the NDI and RV of the M PSSCHs are determined by at least one of the following:

[0152] The corresponding NDI and RV are determined by the second SCI carried by each PSSCH;

[0153] The number of bits in the second SCI used to indicate the NDI and RV fields of the M PSSCHs is related to M, and this number of bits is dynamic;

[0154] If the number of bits in the second SCI used to indicate the NDI and RV fields of the M PSSCHs is related to N, then the number of bits is static. If the number of valid bits in the second SCI used to indicate the NDI and RV fields of the M PSSCHs is related to M, then the number of valid bits is dynamic. The terminal only focuses on the number of valid bits during demodulation.

[0155] In one implementation, at least one of the following pieces of information is uniformly indicated by a second SCI or is individually indicated by multiple second SCIs:

[0156] The transmission types of the M PSSCHs;

[0157] The feedback enable or disable flags of the HARQ of the M PSSCHs;

[0158] The CSI requests for the M PSSCHs.

[0159] As can be seen, the second SCI is carried in the PSSCH, and the number of coded modulation symbols of the second SCI is related to the following: the number of subcarriers allocated to the PSSCH in the first time slot where the second SCI is located. For transmission mode 1, if the second SCI is carried in each PSSCH, then each second SCI indicates the above information of the PSSCH it is located in; if the second SCI is carried in one PSSCH, then the indication content of the second SCI is as shown in Table 2 below:

[0160] Table 2

[0161]

[0162]

[0163] For transmission mode 2:

[0164] In one implementation, when determining the REs for the M TBs, the REs used for PSSCH transmission in each first timeslot are determined by at least one of the following:

[0165] The number of REs occupied by the PSSCH in the first time slot of the first time slot where the M PSSCHs are located;

[0166] The number of REs occupied by the DMRS of the PSCCH in the first time slot of the first time slot where the M PSSCHs are located.

[0167] In one implementation, the spatial information of the M PSSCHs is determined by the first SCI uniformly instructing the M PSSCHs or by the first SCI individually instructing the M PSSCHs.

[0168] In one implementation, the format and scaling factor of the PSCCH carried by the M PSSCHs include:

[0169] A second SCI is carried by a designated PSSCH among the M PSSCHs; wherein the designated PSSCH is specified by the protocol or configured by a higher layer on the network side.

[0170] In one implementation, at least one of the following pieces of information is uniformly indicated by the first SCI:

[0171] The priority of the M PSSCHs;

[0172] Reserved time and frequency resources for PSSCH;

[0173] The symbol length of the DMRS of the M PSSCHs;

[0174] The MCS of the M PSSCH;

[0175] The symbol overhead of the PSFCH in the first time slot where the M PSSCHs are located;

[0176] The format and scaling factor of the second SCI carried by the M PSSCHs.

[0177] It is evident that, for transmission mode 2, the indication content of the first SCI is a uniform indication for all M PSSCHs.

[0178] The content indicated by the second SCI can vary. In one embodiment, the second SCI is used to indicate at least one of the following pieces of information for the M PSSCHs:

[0179] The source identifier (ID) of the M PSSCHs;

[0180] The target IDs of the M PSSCHs;

[0181] The region IDs of the M PSSCHs;

[0182] The communication range of the M PSSCHs;

[0183] The process numbers of the M PSSCH Hybrid Automatic Repeat Request (HARQ) processes;

[0184] The M PSSCHs have New Data Indicators (NDI) and Redundancy Versions (RV).

[0185] The transmission types of the M PSSCHs;

[0186] The HARQ feedback enable or disable flags of the M PSSCHs;

[0187] The CSI requests for the M PSSCHs.

[0188] In one implementation, the second SCI is also used to indicate that the M PSSCHs have the same source ID, destination ID, region ID, and communication range.

[0189] In one implementation, at least one of the following pieces of information is uniformly indicated by a second SCI:

[0190] The source IDs of the M PSSCHs;

[0191] The target IDs of the M PSSCHs;

[0192] The region IDs of the M PSSCHs;

[0193] The communication range of the M PSSCHs;

[0194] The HARQ process numbers of the M PSSCHs;

[0195] The NDI and RV of the M PSSCHs;

[0196] The transmission types of the M PSSCHs;

[0197] The feedback enable or disable flags of the HARQ of the M PSSCHs;

[0198] The CSI requests for the M PSSCHs.

[0199] It is evident that, for transmission mode 2, the indication content of the second SCI is a uniform indication for each of the M PSSCHs.

[0200] In one implementation, the time-domain resources of the DMRS of the PSSCHs in the first time slot containing the M PSSCHs are determined by at least one of the following:

[0201] The number of symbols occupied by the PSCCH in the first time slot;

[0202] The number of symbols occupied by the PSSCH in the first time slot;

[0203] The symbol length of the DMRS of the PSSCH;

[0204] The M;

[0205] The N;

[0206] The index value of the first time slot in the resource unit.

[0207] In one implementation, the symbol position of the DMRS of the PSSCH in the first time slot where the M PSSCHs are located is determined by the index value of the symbol of the first time slot in the resource unit.

[0208] In one implementation, the symbol position of the DMRS in each first time slot of the PSSCH is the same.

[0209] In one implementation, the nominal number of symbols occupied by the PSSCH in the first time slot is determined by at least one of the following:

[0210] The M;

[0211] The N;

[0212] The number of symbols occupied by the PSCCH.

[0213] In one implementation, the time-frequency resources of the CSI-RS in the first time slot containing the M PSSCHs are determined by at least one of the following:

[0214] CSI request to obtain parameters;

[0215] The CSI request field is the CSI request field of the second SCI associated with PSSCH;

[0216] Time-frequency location of CSI-RS;

[0217] Number of antenna ports for CSI-RS;

[0218] CSI RE density;

[0219] The M;

[0220] The N;

[0221] The index value of the first time slot in the resource unit.

[0222] In one implementation, the time-frequency resources of the PT-RS in the first time slot containing the M PSSCHs are determined by at least one of the following:

[0223] The MCS of the M PSSCH;

[0224] The number of CRC check bits in the first PSCCH;

[0225] The M;

[0226] The N;

[0227] The index value of the first time slot in the resource unit.

[0228] In one implementation, the resource reservation for the first time slot is based on M PSSCHs as the resource reservation unit.

[0229] In one implementation, the time-frequency patterns of the DMRS in the first time slot are all identical.

[0230] In one implementation, the port of the DMRS in the first time slot is determined by the first SCI unified indication or by separate indications.

[0231] As can be seen from the technical solutions provided by the above embodiments of the present invention, the embodiments of the present invention determine the time-domain resources, frequency-domain resources, and transmission modes of the M PSSCHs, and determine other transmission information for different transmission modes, thereby enabling multiple PSSCHs within a resource unit to be scheduled through a PSCCH, making full use of the time-frequency resources within the resource unit and improving resource utilization.

[0232] The side-link transmission method provided in this application can be executed by a side-link transmission device. This application uses the example of a side-link transmission device executing the side-link transmission method to illustrate the side-link transmission device provided in this application.

[0233] like Figure 3 As shown, the sidelink transmission device includes an acquisition module 301 and a transmission module 302. The acquisition module 301 acquires first information transmitted by the physical sidelink control channel within a resource unit of the sidelink, the first information including first sidelink control information; wherein the resource unit includes N time slots; the transmission module 302 determines, based on the first information, the transmission information of M physical sidelink shared channels within the resource unit scheduled by the physical sidelink control channel, where N is greater than or equal to M.

[0234] Furthermore, the temporal location of the physical channel within the resource unit has been determined;

[0235] The physical channel includes at least one of the following:

[0236] Physical sidelink control channel;

[0237] Physical sidelink shared channel;

[0238] Physical sidelink feedback channel;

[0239] Automatic gain control;

[0240] Protected symbol.

[0241] As can be seen from the technical solutions provided by the above embodiments of the present invention, the embodiments of the present invention obtain the first information of PSCCH transmission in the resource unit of the side link, the first information including the first SCI; based on the first information, determine the transmission information of M PSSCHs in the resource unit scheduled by the PSCCH, thereby enabling multiple PSSCHs in the resource unit to be scheduled through one PSCCH, making full use of the time and frequency resources in the resource unit and improving the utilization rate of resources.

[0242] Based on the above embodiments, the transmission module is further configured to perform at least one of the following:

[0243] Determine the time-domain resources of the M physical side-link shared channels;

[0244] Determine the frequency domain resources of the M physical sidelink shared channels;

[0245] Determine the transmission mode of the shared channel for the M physical side links.

[0246] Furthermore, the transmission module is configured to determine the first time slot containing the M physical sidelink shared channels based on at least one of the following:

[0247] The first time slot containing the M physical side-link shared channels is all N time slots in the resource unit;

[0248] When the M first time slots are consecutive time slots, the first first time slot is determined based on the second time slot where the physical side link control channel is located and the first offset; wherein, the first offset is used to indicate the offset between the first first time slot and the second time slot.

[0249] Based on the second time slot where the physical side link control channel is located, and the first offset group corresponding to the M physical side link shared channels, the offset between each first time slot and the second time slot is determined; wherein, the first offset group includes the offset between each first time slot and the second time slot.

[0250] Each first time slot is determined based on its corresponding index value.

[0251] Furthermore, the method for obtaining the first offset group includes:

[0252] Get multiple configured first offset groups;

[0253] The first offset group corresponding to the M physical side link shared channels is determined from the plurality of first offset groups according to the instruction information;

[0254] The indication information includes at least one of the following:

[0255] The first side link control information;

[0256] Downlink control information.

[0257] Furthermore, the method for obtaining the index value corresponding to each first time slot includes:

[0258] Obtain multiple bit mapping sequences, which are used to indicate the index value corresponding to each first time slot;

[0259] Based on the indication information, determine the bit mapping sequence corresponding to the M physical sidelink shared channels from the plurality of bit mapping sequences;

[0260] The indication information includes at least one of the following:

[0261] The first side link control information;

[0262] Downlink control information.

[0263] Furthermore, the transmission module is used for:

[0264] Based on the first sub-channel or first physical resource block corresponding to the physical sidelink control channel and the second offset, determine the second sub-channel or second physical resource block corresponding to the M shared physical sidelink channels; wherein, the first sub-channel is the smallest sub-channel where the physical sidelink control channel is located, the first physical resource block is the smallest physical resource block where the physical sidelink control channel is located, the second sub-channel is the smallest sub-channel where the M shared physical sidelink channels are located, and the second physical resource block is the smallest physical resource block where the M shared physical sidelink channels are located;

[0265] The frequency domain resources of the M physical side-link shared channels are determined based on the second sub-channel or the second physical resource block, and the number of sub-channels or physical resource blocks occupied by the M physical side-link shared channels.

[0266] Furthermore, the second sub-channel is the same as the first sub-channel, or the second physical resource block is the same as the first physical resource block.

[0267] Furthermore, the frequency domain resources of the M physical sidelinks sharing channels are identical.

[0268] Furthermore, the transmission mode of the M physical sidelinks sharing the channel includes at least one of the following:

[0269] The M physical sidelink shared channels correspond one-to-one with the M transport blocks;

[0270] The M physical sidelinks share a channel for repeatedly transmitting a transport block.

[0271] Furthermore, the transmission mode is determined by at least one of the following:

[0272] The first side link control information;

[0273] Downlink control information;

[0274] The agreement stipulates;

[0275] Network-side high-level configuration.

[0276] Furthermore, the transmission module is also configured to determine at least one of the following pieces of information:

[0277] The M physical side-link shared channels are mapped to the resource units of the corresponding transport blocks;

[0278] Spatial domain information of the shared channel for the M physical side links;

[0279] The priority of the shared channel of the M physical side links;

[0280] Reserved time-frequency resources for shared channels in physical side links;

[0281] The symbol length of the demodulation reference signal for the M physical side-link shared channels;

[0282] The modulation and coding scheme of the M physical side-link shared channels;

[0283] The symbol overhead of the physical sidelink feedback channel in the first time slot where the M physical sidelink shared channels are located;

[0284] The format and scaling factor of the second side link control information carried by the shared channel of the M physical side links;

[0285] The time-domain resources of the demodulation reference signal of the physical sidelink shared channel in the M first time slots;

[0286] The time-frequency resources of the channel state information reference information for the M first time slots;

[0287] The time-frequency resources of the phase tracking reference signals of the M first time slots;

[0288] The reservation period for the resources reserved in the M first time slots;

[0289] The time-frequency patterns of the demodulation reference signals of the M first time slots;

[0290] The port of the demodulation reference signal in the first time slot.

[0291] Furthermore, where the M physical side-link shared channels correspond one-to-one with the M transport blocks, the transmission module is also used to determine the resource units in the transport block used for transmission via the physical side-link shared channels based on at least one of the following:

[0292] The number of resource units occupied by the physical side link control channel;

[0293] The number of resource units occupied by the demodulation reference signal of the physical side link control channel;

[0294] The index value of the first time slot in the resource unit;

[0295] The M;

[0296] The N.

[0297] Furthermore, the spatial information of the M physical sidelink shared channels is determined by the first sidelink control information in a unified manner or by individual indications.

[0298] Furthermore, when the M physical sidelink shared channels correspond one-to-one with the M transport blocks, the priority of the M physical sidelink shared channels is determined by the first sidelink control information in a unified manner or by individual indications.

[0299] Furthermore, when the M physical sidelink shared channels correspond one-to-one with the M transport blocks, the time-frequency resources of the reserved physical sidelink shared channels are determined by at least one of the following:

[0300] The time-frequency resources of the reserved physical side-link shared channel are determined by the indication of the first side-link control information;

[0301] The time-frequency resources of the first physical side-link shared channel in the reserved physical side-link shared channel are determined by the indication of the first side-link control information;

[0302] The time-frequency pattern of the time-frequency resources of the reserved physical side-link shared channel is the same as that of the time-frequency resources of the M physical side-link shared channels.

[0303] Furthermore, when the M physical side-link shared channels correspond one-to-one with the M transport blocks, the symbol length of the demodulation reference signal of the M physical side-link shared channels is determined by at least one of the following:

[0304] The symbol length of the demodulation reference signal of the M physical side-link shared channel is determined by the unified indication or separate indication of the first side-link control information.

[0305] Based on the first side link control information indication, the symbol length of the demodulation reference signal of the M physical side link shared channel is determined from the candidate symbol lengths; wherein, the candidate symbol lengths are specified by the protocol or configured by the higher layer on the network side.

[0306] Furthermore, when the M physical side-link shared channels correspond one-to-one with the M transport blocks, the modulation and coding schemes of the M physical side-link shared channels are determined by the unified indication or separate indication of the first side-link control information.

[0307] Furthermore, when the M physical sidelink shared channels correspond one-to-one with the M transport blocks, the symbol overhead of the physical sidelink feedback channel in the time slot where the M physical sidelink shared channels are located is determined by the unified indication or separate indication of the first sidelink control information.

[0308] Furthermore, when the M physical side-link shared channels correspond one-to-one with the M transport blocks, the format and scaling factor of the second side-link control information carried by the M physical side-link shared channels include at least one of the following:

[0309] Each physical side link shares a channel that carries the corresponding second side link control information;

[0310] A designated physical sidelink shared channel among the M physical sidelink shared channels carries the second sidelink control information; wherein, the designated physical sidelink shared channel is specified by the protocol or configured by the higher layer on the network side.

[0311] Furthermore, the second sidelink control information is used to indicate at least one of the following information for the M physical sidelinks sharing the channel:

[0312] The source identifier of the shared channel for the M physical side links;

[0313] The target identifier of the M physical sidelink shared channels;

[0314] The area identifier for the shared channel of the M physical side links;

[0315] The communication range of the shared channel for the M physical side links;

[0316] The hybrid automatic repeat request process number of the M physical side-link shared channels;

[0317] The new data indication and redundant version of the M physical sidelink shared channels;

[0318] The transmission type of the shared channel for the M physical side links;

[0319] The hybrid automatic repeat request feedback enable or disable flags for the M physical side-link shared channels;

[0320] The request for channel state information of the M physical side links sharing the channel.

[0321] Furthermore, the second sidelink control information is used to indicate that the M physical sidelinks share the same source identifier, target identifier, area identifier, and communication range.

[0322] Furthermore, when the M physical side-link shared channels correspond one-to-one with the M transport blocks, the hybrid automatic repeat request process number of the M physical side-link shared channels is determined by at least one of the following:

[0323] The corresponding hybrid automatic repeat request process number is determined by the second side link control information carried by the shared channel of each physical side link.

[0324] When the hybrid automatic repeat request process numbers of the M physical side-link shared channels are consecutive, the hybrid automatic repeat request process number of the first physical side-link shared channel among the M physical side-link shared channels is indicated by the second side-link control information, and the hybrid automatic repeat request process numbers of the remaining physical side-link shared channels are determined based on the hybrid automatic repeat request process number of the first physical side-link shared channel.

[0325] Furthermore, when the M physical side-link shared channels correspond one-to-one with the M transport blocks, the new data indication and redundancy version of the M physical side-link shared channels are determined by at least one of the following:

[0326] The corresponding new data indication and redundancy version are determined by the second sidelink control information carried by the shared channel of each physical sidelink.

[0327] The number of bits in the field used to indicate the new data indication and redundant version of the M physical sidelink shared channels in the second sidelink control information is related to M;

[0328] The number of bits in the field used to indicate the new data indication and redundant version of the M physical sidelink shared channels in the second sidelink control information is related to N, and the number of valid bits in the field used to indicate the new data indication and redundant version of the M physical sidelink shared channels in the second sidelink control information is related to M.

[0329] Furthermore, when the M physical sidelinks share a one-to-one correspondence with the M transport blocks, at least one of the following pieces of information is uniformly indicated by a single second sidelink control message or is separately indicated by multiple second sidelink control messages:

[0330] The transmission type of the shared channel for the M physical side links;

[0331] The hybrid automatic repeat request feedback enable or disable flags for the M physical side-link shared channels;

[0332] The request for channel state information of the M physical side links sharing the channel.

[0333] Furthermore, when the M physical side-link shared channels are used to repeatedly transmit a transport block, the transmission module is also configured to determine the resource units in each first time slot used for transmission via the physical side-link shared channels by at least one of the following:

[0334] The number of resource units occupied by the physical sidelink control channel in the first time slot of the first time slot where the M physical sidelink shared channels are located;

[0335] The number of resource units occupied by the demodulation reference signal of the physical sidelink control channel in the first time slot of the first time slot where the M physical sidelink shared channels are located.

[0336] Furthermore, the spatial information of the M physical sidelink shared channels is determined by the first sidelink control information in a unified manner or by individual indications.

[0337] Furthermore, when the M physical side-link shared channels are used to repeatedly transmit a transport block, the format and scaling factor of the second side-link control information carried by the M physical side-link shared channels include: a designated physical side-link shared channel among the M physical side-link shared channels carries the second side-link control information; wherein the designated physical side-link shared channel is specified by the protocol or configured by the higher layer on the network side.

[0338] Furthermore, when the M physical sidelinks share a channel to repeatedly transmit a transport block, at least one of the following pieces of information is uniformly indicated by the first sidelink control information:

[0339] The priority of the shared channel of the M physical side links;

[0340] Reserved time-frequency resources for shared channels in physical side links;

[0341] The symbol length of the demodulation reference signal for the M physical side-link shared channels;

[0342] The modulation and coding scheme of the M physical side-link shared channels;

[0343] The symbol overhead of the physical sidelink feedback channel in the first time slot where the M physical sidelink shared channels are located;

[0344] The format and scaling factor of the second side link control information carried by the shared channel of the M physical side links.

[0345] Furthermore, the second sidelink control information is used to indicate at least one of the following information for the M physical sidelinks sharing the channel:

[0346] The source identifier of the shared channel for the M physical side links;

[0347] The target identifier of the M physical sidelink shared channels;

[0348] The area identifier for the shared channel of the M physical side links;

[0349] The communication range of the shared channel for the M physical side links;

[0350] The hybrid automatic repeat request process number of the M physical side-link shared channels;

[0351] The new data indication and redundant version of the M physical sidelink shared channels;

[0352] The transmission type of the shared channel for the M physical side links;

[0353] The hybrid automatic repeat request feedback enable or disable flags for the M physical side-link shared channels;

[0354] The request for channel state information of the M physical side links sharing the channel.

[0355] Furthermore, the second sidelink control information is used to indicate that the M physical sidelinks share the same source identifier, target identifier, area identifier, and communication range.

[0356] Furthermore, when the M physical sidelinks share a channel for repeated transmission of a transport block, at least one of the following pieces of information is uniformly indicated by a second sidelink control message:

[0357] The source identifier of the shared channel for the M physical side links;

[0358] The target identifier of the M physical sidelink shared channels;

[0359] The area identifier for the shared channel of the M physical side links;

[0360] The communication range of the shared channel for the M physical side links;

[0361] The hybrid automatic repeat request process number of the M physical side-link shared channels;

[0362] The new data indication and redundant version of the M physical sidelink shared channels;

[0363] The transmission type of the shared channel for the M physical side links;

[0364] The hybrid automatic repeat request feedback enable or disable flags for the M physical side-link shared channels;

[0365] The request for channel state information of the M physical side links sharing the channel.

[0366] Furthermore, the time-domain resources of the demodulation reference signal for the physical sidelink shared channel in the first time slot are determined by at least one of the following:

[0367] The number of symbols occupied by the physical sidelink control channel in the first time slot;

[0368] The number of symbols occupied by the physical sidelink shared channel in the first time slot;

[0369] The symbol length of the demodulation reference signal of the physical side link shared channel;

[0370] The M;

[0371] The N;

[0372] The index value of the first time slot in the resource unit.

[0373] Furthermore, the symbol position of the demodulation reference signal of the physical sidelink shared channel in the first time slot is determined by the index value of the symbol of the first time slot in the resource unit.

[0374] Furthermore, the demodulation reference signal of the physical sidelink shared channel in each first time slot has the same symbol position.

[0375] Furthermore, the nominal number of symbols occupied by the physical sidelink control channel in the first time slot is determined by at least one of the following:

[0376] The M;

[0377] The N;

[0378] The number of symbols occupied by the physical sidelink control channel.

[0379] Furthermore, the time-frequency resources of the channel state information reference information in the first time slot are determined by at least one of the following:

[0380] Request parameters to obtain channel status information;

[0381] Channel status information request field;

[0382] The time-frequency position of the channel state information reference information;

[0383] The number of antenna ports for channel state information reference information;

[0384] Resource unit density of channel state information;

[0385] The M;

[0386] The N;

[0387] The index value of the first time slot in the resource unit.

[0388] Furthermore, the time-frequency resources of the phase tracking reference signal in the first time slot are determined by at least one of the following:

[0389] The modulation and coding scheme of the M physical side-link shared channels;

[0390] The number of cyclic redundancy check bits in the first side link control information;

[0391] The M;

[0392] The N;

[0393] The index value of the first time slot in the resource unit.

[0394] Furthermore, the resource reservation for the first time slot uses M physical sidelink shared channels as the resource reservation unit.

[0395] Furthermore, the time-frequency patterns of the demodulation reference signals in the first time slot are all identical.

[0396] Furthermore, the port of the demodulation reference signal in the first time slot is determined by the first side link control information in a unified manner or by separate indications.

[0397] As can be seen from the technical solutions provided by the above embodiments of the present invention, the embodiments of the present invention determine the time-domain resources, frequency-domain resources, and transmission modes of the M PSSCHs, and determine other transmission information for different transmission modes, thereby enabling multiple PSSCHs within a resource unit to be scheduled through a PSCCH, making full use of the time-frequency resources within the resource unit and improving resource utilization.

[0398] The sidelink transmission device in this application embodiment can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or other devices besides a terminal. For example, the terminal can include, but is not limited to, the type of terminal 11 listed above; other devices can be servers, network attached storage (NAS), etc., and this application embodiment does not specifically limit the type.

[0399] The side-link transmission device provided in this application embodiment can achieve... Figure 2The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0400] Optional, such as Figure 4 As shown, this application embodiment also provides a communication device 400, including a processor 401 and a memory 402. The memory 402 stores programs or instructions that can run on the processor 401. For example, when the communication device 400 is a terminal, the program or instructions executed by the processor 401 implement the various steps of the above-described side-link transmission method embodiment and achieve the same technical effect. When the communication device 400 is a network-side device, the program or instructions executed by the processor 401 implement the various steps of the above-described side-link transmission method embodiment and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0401] This application embodiment also provides a terminal, including a processor and a communication interface. The processor is used to determine, based on the first information, the transmission information of M physical side-link shared channels within the resource unit scheduled by the physical side-link control channel, where N is greater than or equal to M. The communication interface is used to acquire the first information transmitted by the physical side-link control channels within the resource unit of the side-link, the first information including first side-link control information; wherein, the resource unit includes N time slots. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. Specifically, Figure 5 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0402] The terminal 500 includes, but is not limited to, at least some of the following components: radio frequency unit 501, network module 502, audio output unit 503, input unit 504, sensor 505, display unit 506, user input unit 507, interface unit 508, memory 509, and processor 510.

[0403] Those skilled in the art will understand that the terminal 500 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 510 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 5 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0404] It should be understood that, in this embodiment, the input unit 504 may include a graphics processing unit (GPU) 5041 and a microphone 5042. The GPU 5041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 506 may include a display panel 5061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 507 includes at least one of a touch panel 5071 and other input devices 5072. The touch panel 5071 is also called a touch screen. The touch panel 5071 may include a touch detection device and a touch controller. Other input devices 5072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0405] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 501 can transmit it to the processor 510 for processing; in addition, the radio frequency unit 501 can send uplink data to the network-side device. Typically, the radio frequency unit 501 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0406] The memory 509 can be used to store software programs or instructions, as well as various data. The memory 509 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 509 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (Synchlink DRAM, SLDRAM), and direct memory bus RAM (DRRAM). The memory 509 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0407] Processor 510 may include one or more processing units; optionally, processor 510 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 510.

[0408] The radio frequency unit 501 is used to acquire first information transmitted in the physical sidelink control channel within the resource unit of the sidelink, the first information including first sidelink control information; wherein the resource unit includes N time slots.

[0409] Processor 510 is configured to determine, based on the first information, the transmission information of M physical side-link shared channels within the resource unit scheduled by the physical side-link control channel, where N is greater than or equal to M.

[0410] Furthermore, the temporal location of the physical channel within the resource unit has been determined;

[0411] The physical channel includes at least one of the following:

[0412] Physical sidelink control channel;

[0413] Physical sidelink shared channel;

[0414] Physical sidelink feedback channel;

[0415] Automatic gain control;

[0416] Protected symbol.

[0417] The embodiments of this application can schedule multiple PSSCHs within a resource unit through a single PSCCH, making full use of the time and frequency resources within the resource unit and improving resource utilization.

[0418] Furthermore, the processor 510 is configured to perform at least one of the following:

[0419] Determine the time-domain resources of the M physical side-link shared channels;

[0420] Determine the frequency domain resources of the M physical sidelink shared channels;

[0421] Determine the transmission mode of the shared channel for the M physical side links.

[0422] Furthermore, the processor 510 is used for:

[0423] The first time slot containing the M physical sidelink shared channels is determined based on at least one of the following:

[0424] The first time slot containing the M physical side-link shared channels is all N time slots in the resource unit;

[0425] When the M first time slots are consecutive time slots, the first first time slot is determined based on the second time slot where the physical side link control channel is located and the first offset; wherein, the first offset is used to indicate the offset between the first first time slot and the second time slot.

[0426] Based on the second time slot where the physical side link control channel is located, and the first offset group corresponding to the M physical side link shared channels, the offset between each first time slot and the second time slot is determined; wherein, the first offset group includes the offset between each first time slot and the second time slot.

[0427] Each first time slot is determined based on its corresponding index value.

[0428] Furthermore, the method for obtaining the first offset group includes:

[0429] Get multiple configured first offset groups;

[0430] The first offset group corresponding to the M physical side link shared channels is determined from the plurality of first offset groups according to the instruction information;

[0431] The indication information includes at least one of the following:

[0432] The first side link control information;

[0433] Downlink control information.

[0434] Furthermore, the method for obtaining the index value corresponding to each first time slot includes:

[0435] Obtain multiple bit mapping sequences, which are used to indicate the index value corresponding to each first time slot;

[0436] Based on the indication information, determine the bit mapping sequence corresponding to the M physical sidelink shared channels from the plurality of bit mapping sequences;

[0437] The indication information includes at least one of the following:

[0438] The first side link control information;

[0439] Downlink control information.

[0440] Furthermore, the processor 510 is also used for:

[0441] Based on the first sub-channel or first physical resource block corresponding to the physical sidelink control channel and the second offset, determine the second sub-channel or second physical resource block corresponding to the M shared physical sidelink channels; wherein, the first sub-channel is the smallest sub-channel where the physical sidelink control channel is located, the first physical resource block is the smallest physical resource block where the physical sidelink control channel is located, the second sub-channel is the smallest sub-channel where the M shared physical sidelink channels are located, and the second physical resource block is the smallest physical resource block where the M shared physical sidelink channels are located;

[0442] The frequency domain resources of the M physical side-link shared channels are determined based on the second sub-channel or the second physical resource block, and the number of sub-channels or physical resource blocks occupied by the M physical side-link shared channels.

[0443] Furthermore, the second sub-channel is the same as the first sub-channel, or the second physical resource block is the same as the first physical resource block.

[0444] Furthermore, the frequency domain resources of the M physical sidelinks sharing channels are identical.

[0445] Furthermore, the processor 510 is also configured to perform at least one of the following:

[0446] The M physical sidelink shared channels correspond one-to-one with the M transport blocks;

[0447] The M physical sidelinks share a channel for repeatedly transmitting a transport block.

[0448] Furthermore, the transmission mode is determined by at least one of the following:

[0449] The first side link control information;

[0450] Downlink control information;

[0451] The agreement stipulates;

[0452] Network-side high-level configuration.

[0453] Furthermore, the processor 510 is also configured to execute at least one of the following information:

[0454] The M physical side-link shared channels are mapped to the resource units of the corresponding transport blocks;

[0455] Spatial domain information of the shared channel for the M physical side links;

[0456] The priority of the shared channel of the M physical side links;

[0457] Reserved time-frequency resources for shared channels in physical side links;

[0458] The symbol length of the demodulation reference signal for the M physical side-link shared channels;

[0459] The modulation and coding scheme of the M physical side-link shared channels;

[0460] The symbol overhead of the physical sidelink feedback channel in the first time slot where the M physical sidelink shared channels are located;

[0461] The format and scaling factor of the second side link control information carried by the shared channel of the M physical side links;

[0462] The time-domain resources of the demodulation reference signal of the physical sidelink shared channel in the M first time slots;

[0463] The time-frequency resources of the channel state information reference information for the M first time slots;

[0464] The time-frequency resources of the phase tracking reference signals of the M first time slots;

[0465] The reservation period for the resources reserved in the M first time slots;

[0466] The time-frequency patterns of the demodulation reference signals of the M first time slots;

[0467] The ports of the demodulation reference signals for the M first time slots.

[0468] Furthermore, when the M physical sidelink shared channels correspond one-to-one with the M transport blocks, the processor 510 is further configured to:

[0469] The resource units in the transport block used for physical sidelink shared channel transmission are determined based on at least one of the following:

[0470] The number of resource units occupied by the physical side link control channel;

[0471] The number of resource units occupied by the demodulation reference signal of the physical side link control channel;

[0472] The index value of the first time slot in the resource unit;

[0473] The M;

[0474] The N.

[0475] Furthermore, when the M physical sidelinks share a channel for repeated transmission of a transport block, the processor 510 is further configured to: When determining the resource units of the M transport blocks, the processor 510 is also configured to:

[0476] The resource element for physical sidelink shared channel transmission in each first time slot is determined by at least one of the following:

[0477] The number of resource units occupied by the physical sidelink control channel in the first time slot of the first time slot where the M physical sidelink shared channels are located;

[0478] The number of resource units occupied by the demodulation reference signal of the physical sidelink control channel in the first time slot of the first time slot where the M physical sidelink shared channels are located.

[0479] Furthermore, the spatial information of the M physical sidelink shared channels is determined by the first sidelink control information in a unified manner or by individual indications.

[0480] Furthermore, when the M physical sidelink shared channels correspond one-to-one with the M transport blocks, the priority of the M physical sidelink shared channels is determined by the first sidelink control information in a unified manner or by individual indications.

[0481] Furthermore, when the M physical sidelink shared channels correspond one-to-one with the M transport blocks, the time-frequency resources of the reserved physical sidelink shared channels are determined by at least one of the following:

[0482] The time-frequency resources of the reserved physical side-link shared channel are determined by the indication of the first side-link control information;

[0483] The time-frequency resources of the first physical side-link shared channel in the reserved physical side-link shared channel are determined by the indication of the first side-link control information;

[0484] The time-frequency pattern of the time-frequency resources of the reserved physical side-link shared channel is the same as that of the time-frequency resources of the M physical side-link shared channels.

[0485] Furthermore, when the M physical side-link shared channels correspond one-to-one with the M transport blocks, the symbol length of the demodulation reference signal of the M physical side-link shared channels is determined by at least one of the following:

[0486] The symbol length of the demodulation reference signal of the M physical side-link shared channel is determined by the unified indication or separate indication of the first side-link control information.

[0487] Based on the first side link control information indication, the symbol length of the demodulation reference signal of the M physical side link shared channel is determined from the candidate symbol lengths; wherein, the candidate symbol lengths are specified by the protocol or configured by the higher layer on the network side.

[0488] Furthermore, when the M physical side-link shared channels correspond one-to-one with the M transport blocks, the modulation and coding schemes of the M physical side-link shared channels are determined by the unified indication or separate indication of the first side-link control information.

[0489] Furthermore, when the M physical sidelink shared channels correspond one-to-one with the M transport blocks, the symbol overhead of the physical sidelink feedback channel in the time slot where the M physical sidelink shared channels are located is determined by the unified indication or separate indication of the first sidelink control information.

[0490] Furthermore, when the M physical side-link shared channels correspond one-to-one with the M transport blocks, the format and scaling factor of the second side-link control information carried by the M physical side-link shared channels include at least one of the following:

[0491] Each physical side link shares a channel that carries the corresponding second side link control information;

[0492] A designated physical sidelink shared channel among the M physical sidelink shared channels carries the second sidelink control information; wherein, the designated physical sidelink shared channel is specified by the protocol or configured by the higher layer on the network side.

[0493] Furthermore, when the M physical side-link shared channels are used to repeatedly transmit a transport block, the format and scaling factor of the second side-link control information carried by the M physical side-link shared channels include: a designated physical side-link shared channel among the M physical side-link shared channels carries the second side-link control information; wherein the designated physical side-link shared channel is specified by the protocol or configured by the higher layer on the network side.

[0494] Furthermore, when the M physical sidelinks share a channel to repeatedly transmit a transport block, at least one of the following pieces of information is uniformly indicated by the first sidelink control information:

[0495] The priority of the shared channel of the M physical side links;

[0496] Reserved time-frequency resources for shared channels in physical side links;

[0497] The symbol length of the demodulation reference signal for the M physical side-link shared channels;

[0498] The modulation and coding scheme of the M physical side-link shared channels;

[0499] The symbol overhead of the physical sidelink feedback channel in the first time slot;

[0500] The format and scaling factor of the second side link control information carried by the shared channel of the M physical side links.

[0501] Furthermore, the second sidelink control information is used to indicate at least one of the following information for the M physical sidelinks sharing the channel:

[0502] The source identifier of the shared channel for the M physical side links;

[0503] The target identifier of the M physical sidelink shared channels;

[0504] The area identifier for the shared channel of the M physical side links;

[0505] The communication range of the shared channel for the M physical side links;

[0506] The hybrid automatic repeat request process number of the M physical side-link shared channels;

[0507] The new data indication and redundant version of the M physical sidelink shared channels;

[0508] The transmission type of the shared channel for the M physical side links;

[0509] The hybrid automatic repeat request feedback enable or disable flags for the M physical side-link shared channels;

[0510] The request for channel state information of the M physical side links sharing the channel.

[0511] Furthermore, the second sidelink control information is used to indicate that the M physical sidelinks share the same source identifier, target identifier, area identifier, and communication range.

[0512] Furthermore, when the M physical side-link shared channels correspond one-to-one with the M transport blocks, the hybrid automatic repeat request process number of the M physical side-link shared channels is determined by at least one of the following:

[0513] The corresponding hybrid automatic repeat request process number is determined by the second side link control information carried by the shared channel of each physical side link.

[0514] When the hybrid automatic repeat request process numbers of the M physical side-link shared channels are consecutive, the hybrid automatic repeat request process number of the first physical side-link shared channel among the M physical side-link shared channels is indicated by the second side-link control information, and the hybrid automatic repeat request process numbers of the remaining physical side-link shared channels are determined based on the hybrid automatic repeat request process number of the first physical side-link shared channel.

[0515] Furthermore, when the M physical side-link shared channels correspond one-to-one with the M transport blocks, the new data indication and redundancy version of the M physical side-link shared channels are determined by at least one of the following:

[0516] The corresponding new data indication and redundancy version are determined by the second sidelink control information carried by the shared channel of each physical sidelink.

[0517] The number of bits in the field used to indicate the new data indication and redundant version of the M physical sidelink shared channels in the second sidelink control information is related to M;

[0518] The number of bits in the field used to indicate the new data indication and redundant version of the M physical sidelink shared channels in the second sidelink control information is related to N, and the number of valid bits in the field used to indicate the new data indication and redundant version of the M physical sidelink shared channels in the second sidelink control information is related to M.

[0519] Furthermore, when the M physical sidelinks share a one-to-one correspondence with the M transport blocks, at least one of the following pieces of information is uniformly indicated by a single second sidelink control message or is separately indicated by multiple second sidelink control messages:

[0520] The transmission type of the shared channel for the M physical side links;

[0521] The hybrid automatic repeat request feedback enable or disable flags for the M physical side-link shared channels;

[0522] The request for channel state information of the M physical side links sharing the channel.

[0523] Furthermore, when the M physical sidelinks share a channel for repeated transmission of a transport block, at least one of the following pieces of information is uniformly indicated by a second sidelink control message:

[0524] The source identifier of the shared channel for the M physical side links;

[0525] The target identifier of the M physical sidelink shared channels;

[0526] The area identifier for the shared channel of the M physical side links;

[0527] The communication range of the shared channel for the M physical side links;

[0528] The hybrid automatic repeat request process number of the M physical side-link shared channels;

[0529] The new data indication and redundant version of the M physical sidelink shared channels;

[0530] The transmission type of the shared channel for the M physical side links;

[0531] The hybrid automatic repeat request feedback enable or disable flags for the M physical side-link shared channels;

[0532] The request for channel state information of the M physical side links sharing the channel.

[0533] Furthermore, the time-domain resources of the demodulation reference signal of the physical sidelink shared channel in the first time slot are determined by at least one of the following:

[0534] The number of symbols occupied by the physical sidelink control channel in the first time slot;

[0535] The number of symbols occupied by the physical sidelink shared channel in the first time slot;

[0536] The symbol length of the demodulation reference signal of the physical side link shared channel;

[0537] The M;

[0538] The N;

[0539] The index value of the first time slot in the resource unit.

[0540] Furthermore, the symbol position of the demodulation reference signal of the physical sidelink shared channel in the first time slot is determined by the index value of the symbol of the first time slot in the resource unit.

[0541] Furthermore, the demodulation reference signal of the physical sidelink shared channel in each first time slot has the same symbol position.

[0542] Furthermore, the nominal number of symbols occupied by the physical sidelink control channel in the first time slot is determined by at least one of the following:

[0543] The M;

[0544] The N;

[0545] The number of symbols occupied by the physical sidelink control channel.

[0546] Furthermore, the time-frequency resources of the channel state information reference information in the first time slot are determined by at least one of the following:

[0547] Request parameters to obtain channel status information;

[0548] Channel status information request field;

[0549] The time-frequency position of the channel state information reference information;

[0550] The number of antenna ports for channel state information reference information;

[0551] Resource unit density of channel state information;

[0552] The M;

[0553] The N;

[0554] The index value of the first time slot in the resource unit.

[0555] Furthermore, the time-frequency resources of the phase tracking reference signal in the first time slot are determined by at least one of the following:

[0556] The modulation and coding scheme of the M physical side-link shared channels;

[0557] The number of cyclic redundancy check bits in the first side link control information;

[0558] The M;

[0559] The N;

[0560] The index value of the first time slot in the resource unit.

[0561] Furthermore, the resource reservation for the first time slot uses M physical sidelink shared channels as the resource reservation unit.

[0562] Furthermore, the feature is that the time-frequency patterns of the demodulation reference signals in the first time slot are all the same.

[0563] Furthermore, the port of the demodulation reference signal in the first time slot is determined by the first side link control information in a unified manner or by separate indications.

[0564] Furthermore, the temporal location of the physical channel within the resource unit has been determined;

[0565] The physical channel includes at least one of the following:

[0566] Physical sidelink control channel;

[0567] Physical sidelink shared channel;

[0568] Physical sidelink feedback channel;

[0569] Automatic gain control;

[0570] Protected symbol.

[0571] The embodiments of this application can schedule multiple PSSCHs within a resource unit through a single PSCCH, making full use of the time and frequency resources within the resource unit and improving resource utilization.

[0572] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described side-link transmission method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0573] The processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0574] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described side-link transmission method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0575] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0576] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described side-link transmission method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0577] This application also provides a side-link transmission system, including: multiple terminals and network-side devices, wherein the terminals can be used to perform the steps of the side-link transmission method described above.

[0578] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0579] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0580] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A side-link transmission method, characterized in that, include: The terminal acquires first information transmitted through the physical sidelink control channel within the resource unit of the sidelink, the first information including first sidelink control information; wherein, the resource unit includes N time slots; The terminal determines the transmission information of M physical side-link shared channels within the resource unit scheduled by the physical side-link control channel based on the first information, where N is greater than or equal to M and M is greater than 1. The transmission mode of the M physical side-link shared channels includes a one-to-one correspondence between the M physical side-link shared channels and the M transmission blocks; when the M physical side-link shared channels correspond one-to-one with the M transmission blocks, the modulation and coding schemes of the M physical side-link shared channels are determined by the unified indication or separate indication of the first side-link control information, and the M physical side-link shared channels transmit different transmission blocks. When the M physical side-link shared channels correspond one-to-one with the M transport blocks, the symbol length of the demodulation reference signal of the M physical side-link shared channels is determined by at least one of the following: The symbol length of the demodulation reference signal of the M physical side-link shared channel is determined by the unified indication or separate indication of the first side-link control information. Based on the first side-link control information indication, the symbol length of the demodulation reference signal of the M physical side-link shared channel is determined from the candidate symbol lengths; wherein, the candidate symbol lengths are specified by the protocol or configured by the higher layer on the network side; The determination of the transmission information of the M physical side-link shared channels within the resource unit for scheduling the physical side-link control channel includes determining the time-frequency resources of the reserved physical side-link shared channels; When the M physical side-link shared channels correspond one-to-one with the M transport blocks, the time-frequency resources of the reserved physical side-link shared channels are determined by at least one of the following: The time-frequency resources of the reserved physical side-link shared channel are determined by the indication of the first side-link control information; The time-frequency resources of the first physical side-link shared channel in the reserved physical side-link shared channel are determined by the indication of the first side-link control information; The time-frequency pattern of the time-frequency resources of the reserved physical side-link shared channel is the same as that of the time-frequency resources of the M physical side-link shared channels.

2. The method according to claim 1, characterized in that, The determination of the transmission information for the M physical side-link shared channels within the resource unit for scheduling the physical side-link control channel includes at least one of the following: Determine the time-domain resources of the M physical side-link shared channels; Determine the frequency domain resources of the M physical sidelink shared channels; Determine the transmission mode of the shared channel for the M physical side links.

3. The method according to claim 2, characterized in that, The determination of the time-domain resources of the M physical side-link shared channels includes: The first time slot containing the M physical sidelink shared channels is determined based on at least one of the following: When the M first time slots are consecutive time slots, the first first time slot is determined based on the second time slot where the physical side link control channel is located and the first offset; wherein, the first offset is used to indicate the offset between the first first time slot and the second time slot; Based on the second time slot where the physical side link control channel is located, and the first offset group corresponding to the M physical side link shared channels, the offset between each first time slot is determined; wherein, the first offset group includes the offset between each first time slot and the second time slot; Each first time slot is determined based on its corresponding index value.

4. The method according to claim 3, characterized in that, The methods for obtaining the first offset group include: Get multiple configured first offset groups; The first offset group corresponding to the M physical side link shared channels is determined from the plurality of first offset groups according to the instruction information; The indication information includes at least one of the following: First side link control information; Downlink control information.

5. The method according to claim 3, characterized in that, The method for obtaining the index value corresponding to each first time slot includes: Obtain multiple bit mapping sequences, which are used to indicate the index value corresponding to each first time slot; Based on the indication information, determine the bit mapping sequence corresponding to the M physical sidelink shared channels from the plurality of bit mapping sequences; The indication information includes at least one of the following: First side link control information; Downlink control information.

6. The method according to claim 2, characterized in that, The determination of the frequency domain resources of the M physical sidelink shared channels includes: Based on the first sub-channel or first physical resource block corresponding to the physical sidelink control channel and the second offset, determine the second sub-channel or second physical resource block corresponding to the M shared physical sidelink channels; wherein, the first sub-channel is the smallest sub-channel where the physical sidelink control channel is located, the first physical resource block is the smallest physical resource block where the physical sidelink control channel is located, the second sub-channel is the smallest sub-channel where the M shared physical sidelink channels are located, and the second physical resource block is the smallest physical resource block where the M shared physical sidelink channels are located; The frequency domain resources of the M physical side-link shared channels are determined based on the second sub-channel or the second physical resource block, and the number of sub-channels or physical resource blocks occupied by the M physical side-link shared channels.

7. The method according to claim 6, characterized in that, The second sub-channel is the same as the first sub-channel, or the second physical resource block is the same as the first physical resource block.

8. The method according to claim 2, 6 or 7, characterized in that, The M physical sidelinks share the same frequency domain resources.

9. The method according to claim 2, characterized in that, The transmission mode of the shared channel for the M physical side links also includes: The M physical sidelinks share a channel for repeatedly transmitting a transport block.

10. The method according to claim 8, characterized in that, The transmission mode is determined by at least one of the following: First side link control information; Downlink control information; The agreement stipulates; Network-side high-level configuration.

11. The method according to claim 9, characterized in that, The step of determining the transmission information of the M physical side-link shared channels within the resource unit scheduled by the physical side-link control channel further includes determining at least one of the following: The M physical side-link shared channels are mapped to the resource units of the corresponding transport blocks; The symbol length of the demodulation reference signal for the M physical side-link shared channels; The time-domain resources of the demodulation reference signal shared by the physical sidelinks in the M first time slots; Time-frequency resources of channel state information reference information for M first time slots; Time-frequency resources of the phase tracking reference signals of M first time slots; The reservation period for resource reservation of M first time slots; Time-frequency patterns of the demodulated reference signals of the M first time slots; Ports for demodulation reference signals of M first time slots; The spatial information of the shared channel for the M physical side links; The priority of the M physical side-link shared channels; The modulation and coding scheme of the M physical side-link shared channels; The symbol overhead of the physical sidelink feedback channel in the first time slot where the M physical sidelink shared channels are located; The format and scaling factor of the second side link control information carried by the shared channel of the M physical side links.

12. The method according to claim 11, characterized in that, When the M physical side-link shared channels correspond one-to-one with the M transport blocks, the method further includes the following when determining the resource units of the M transport blocks: The resource units in the transport block used for physical sidelink shared channel transmission are determined based on at least one of the following: The number of resource units occupied by the physical side link control channel; The number of resource units occupied by the demodulation reference signal of the physical side link control channel; The index value of the first time slot in the resource unit; The M; The N.

13. The method according to claim 11, characterized in that, When the M physical sidelinks share a channel for repeated transmission of a transport block, the method further includes, in determining the resource units of the M transport blocks: The resource element for physical sidelink shared channel transmission in each first time slot is determined by at least one of the following: The number of resource units occupied by the physical sidelink control channel in the first time slot of the first time slot where the M physical sidelink shared channels are located; The number of resource units occupied by the demodulation reference signal of the physical sidelink control channel in the first time slot of the first time slot where the M physical sidelink shared channels are located.

14. The method according to claim 11, characterized in that, The spatial information of the M physical sidelink shared channels is determined by the first sidelink control information either uniformly or separately.

15. The method according to claim 11, characterized in that, When the M physical side-link shared channels correspond one-to-one with the M transport blocks, the priority of the M physical side-link shared channels is determined by the first side-link control information in a unified manner or by individual indications.

16. The method according to claim 11, characterized in that, When the M physical sidelink shared channels correspond one-to-one with the M transport blocks, the symbol overhead of the physical sidelink feedback channel in the time slot where the M physical sidelink shared channels are located is determined by the unified indication or separate indication of the first sidelink control information.

17. The method according to claim 11, characterized in that, When the M physical side-link shared channels correspond one-to-one with the M transport blocks, the format and scaling factor of the second side-link control information carried by the M physical side-link shared channels include at least one of the following: Each physical side link shares a channel that carries the corresponding second side link control information; A designated physical sidelink shared channel among the M physical sidelink shared channels carries the second sidelink control information; wherein, the designated physical sidelink shared channel is specified by the protocol or configured by the higher layer on the network side.

18. The method according to claim 11, characterized in that, When the M physical side-link shared channels are used to repeatedly transmit a transport block, the format and scaling factor of the second side-link control information carried by the M physical side-link shared channels include: a designated physical side-link shared channel among the M physical side-link shared channels carries the second side-link control information; wherein, the designated physical side-link shared channel is specified by the protocol or configured by the higher layer on the network side.

19. The method according to claim 11, characterized in that, When the M physical sidelinks share a channel to repeatedly transmit a transport block, at least one of the following pieces of information is uniformly indicated by the first sidelink control information: The priority of the M physical side-link shared channels; Reserved time-frequency resources for shared channels in physical side links; The symbol length of the demodulation reference signal for the M physical side-link shared channels; The modulation and coding scheme of the M physical side-link shared channels; The symbol overhead of the physical sidelink feedback channel in the first time slot; The format and scaling factor of the second side link control information carried by the shared channel of the M physical side links.

20. The method according to claim 11, characterized in that, The second sidelink control information is used to indicate at least one of the following information for the M physical sidelinks sharing the channel: The source identifier of the shared channel for the M physical side links; The target identifier of the M physical sidelink shared channels; The area identifier for the shared channel of the M physical side links; The communication range of the shared channel for the M physical side links; The hybrid automatic repeat request process number of the M physical side-link shared channels; The new data indication and redundant version of the M physical sidelink shared channels; The transmission type of the shared channel for the M physical side links; The hybrid automatic repeat request feedback enable or disable flags for the M physical side-link shared channels; The request for channel state information of the M physical side links sharing the channel.

21. The method according to claim 20, characterized in that, The second sidelink control information is used to indicate that the M physical sidelinks share the same source identifier, destination identifier, area identifier, and communication range.

22. The method according to claim 20, characterized in that, When the M physical side-link shared channels correspond one-to-one with the M transport blocks, the hybrid automatic repeat request process number of the M physical side-link shared channels is determined by at least one of the following: The corresponding hybrid automatic repeat request process number is determined by the second side link control information carried by the shared channel of each physical side link. When the hybrid automatic repeat request process numbers of the M physical side-link shared channels are consecutive, the hybrid automatic repeat request process number of the first physical side-link shared channel among the M physical side-link shared channels is indicated by the second side-link control information, and the hybrid automatic repeat request process numbers of the remaining physical side-link shared channels are determined based on the hybrid automatic repeat request process number of the first physical side-link shared channel.

23. The method according to claim 20, characterized in that, When the M physical side-link shared channels correspond one-to-one with the M transport blocks, the new data indication and redundancy version of the M physical side-link shared channels are determined by at least one of the following: The corresponding new data indication and redundancy version are determined by the second sidelink control information carried by the shared channel of each physical sidelink. The number of bits in the field used to indicate the new data indication and redundant version of the M physical sidelink shared channels in the second sidelink control information is related to M; The number of bits in the field used to indicate the new data indication and redundant version of the M physical sidelink shared channels in the second sidelink control information is related to N, and the number of valid bits in the field used to indicate the new data indication and redundant version of the M physical sidelink shared channels in the second sidelink control information is related to M.

24. The method according to claim 20, characterized in that, When the M physical sidelinks share a one-to-one correspondence with the M transport blocks, at least one of the following pieces of information is indicated uniformly by a second sidelink control information or separately by multiple second sidelink control information: The transmission type of the shared channel for the M physical side links; The hybrid automatic repeat request feedback enable or disable flags for the M physical side-link shared channels; The request for channel state information of the M physical side links sharing the channel.

25. The method according to claim 20, characterized in that, When the M physical sidelinks share a channel for repeated transmission of a transport block, at least one of the following pieces of information is uniformly indicated by a second sidelink control message: The source identifier of the shared channel for the M physical side links; The target identifier of the M physical sidelink shared channels; The area identifier for the shared channel of the M physical side links; The communication range of the shared channel for the M physical side links; The hybrid automatic repeat request process number of the M physical side-link shared channels; The new data indication and redundant version of the M physical sidelink shared channels; The transmission type of the shared channel for the M physical side links; The hybrid automatic repeat request feedback enable or disable flags for the M physical side-link shared channels; The request for channel state information of the M physical side links sharing the channel.

26. The method according to claim 11, characterized in that, The time-domain resources of the demodulation reference signal for the physical sidelink shared channel in the first time slot are determined by at least one of the following: The number of symbols occupied by the physical sidelink control channel in the first time slot; The number of symbols occupied by the physical sidelink shared channel in the first time slot; The symbol length of the demodulation reference signal for the physical side-link shared channel; The M; The N; The index value of the first time slot in the resource unit.

27. The method according to claim 26, characterized in that, The symbol position of the demodulation reference signal of the physical sidelink shared channel in the first time slot is determined by the index value of the symbol of the first time slot in the resource unit.

28. The method according to claim 26, characterized in that, The demodulation reference signal in each physical side link shared channel in the first time slot has the same symbol position.

29. The method according to claim 28, characterized in that, The nominal number of symbols occupied by the physical sidelink control channel in the first time slot is determined by at least one of the following: The M; The N; The number of symbols occupied by the physical sidelink control channel.

30. The method according to claim 11, characterized in that, The time-frequency resources for the channel state information reference information in the first time slot are determined by at least one of the following: Request parameters to obtain channel status information; Channel status information request field; The time-frequency position of the channel state information reference information; The number of antenna ports for channel state information reference information; Resource unit density of channel state information; The M; The N; The index value of the first time slot in the resource unit.

31. The method according to claim 11, characterized in that, The time-frequency resources of the phase tracking reference signal for the first time slot are determined by at least one of the following: The modulation and coding scheme of the M physical side-link shared channels; The number of cyclic redundancy check bits in the first side link control information; The M; The N; The index value of the first time slot in the resource unit.

32. The method according to claim 11, characterized in that, The resource reservation for the first time slot is based on M physical sidelink shared channels as the resource reservation unit.

33. The method according to claim 11, characterized in that, The time-frequency patterns of the demodulation reference signal in the first time slot are all the same.

34. The method according to claim 11, characterized in that, The port of the demodulation reference signal in the first time slot is determined by the first side link control information either uniformly or separately.

35. The method according to claim 1, characterized in that, The temporal location of the physical channel within the resource unit has been determined; The physical channel includes at least one of the following: Physical sidelink control channel; Physical sidelink shared channel; Physical sidelink feedback channel; Automatic gain control; Protected symbol.

36. A side-link transmission device, characterized in that, include: The acquisition module is used to acquire first information transmitted in the physical sidelink control channel within the resource unit of the sidelink, the first information including first sidelink control information; wherein, the resource unit includes N time slots; The transmission module is used to determine the transmission information of M physical side-link shared channels within the resource unit scheduled by the physical side-link control channel according to the first information, where N is greater than or equal to M and M is greater than 1. The transmission mode of the M physical side-link shared channels includes a one-to-one correspondence between the M physical side-link shared channels and the M transmission blocks; when the M physical side-link shared channels correspond one-to-one with the M transmission blocks, the modulation and coding schemes of the M physical side-link shared channels are determined by the unified indication or separate indication of the first side-link control information, and the M physical side-link shared channels transmit different transmission blocks. When the M physical side-link shared channels correspond one-to-one with the M transport blocks, the symbol length of the demodulation reference signal of the M physical side-link shared channels is determined by at least one of the following: The symbol length of the demodulation reference signal of the M physical side-link shared channel is determined by the unified indication or separate indication of the first side-link control information. Based on the first side-link control information indication, the symbol length of the demodulation reference signal of the M physical side-link shared channel is determined from the candidate symbol lengths; wherein, the candidate symbol lengths are specified by the protocol or configured by the higher layer on the network side; The transmission module is also used to determine the time-frequency resources of the reserved physical side link shared channel; When the M physical side-link shared channels correspond one-to-one with the M transport blocks, the time-frequency resources of the reserved physical side-link shared channels are determined by at least one of the following: The time-frequency resources of the reserved physical side-link shared channel are determined by the indication of the first side-link control information; The time-frequency resources of the first physical side-link shared channel in the reserved physical side-link shared channel are determined by the indication of the first side-link control information; The time-frequency pattern of the time-frequency resources of the reserved physical side-link shared channel is the same as that of the time-frequency resources of the M physical side-link shared channels.

37. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the side-link transmission method as described in any one of claims 1 to 35.

38. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the side-link transmission method as described in any one of claims 1-35.

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