CN116321441A

CN116321441A - Side link transmission method, side link transmission device and terminal

Info

Publication number: CN116321441A
Application number: CN202111564262.7A
Authority: CN
Inventors: 李�灿; 李�根; 纪子超
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2023-06-23
Also published as: WO2023116601A1

Abstract

The application discloses a side link transmission method, a side link transmission device and a side link transmission terminal, which belong to the field of mobile communication, and the side link transmission method in the embodiment of the application comprises the following steps: the method comprises the steps that a terminal obtains first information transmitted by a physical side link control channel in a resource unit of a side link, wherein the first information comprises first side link control information; wherein the resource unit includes N time slots; and the terminal determines the transmission information of M physical side link shared channels in the resource unit scheduled by the physical side link control channel according to the first information, wherein N is greater than or equal to M.

Description

Side link transmission method, side link transmission device and terminal

Technical Field

The application belongs to the technical field of mobile communication, and particularly relates to a side link transmission method, a side link transmission device and a side link transmission terminal.

Background

Side links (sidelinks), also known as sidelinks, direct links, side links, etc., are used for direct data transfer between terminals without the aid of network equipment. The Sidelink link interface may also be referred to as a PC5 interface. On sidelink, the UE schedules transmission of a physical sidelink shared channel (Physical Sidelink Shared Channel, PSSCH) to transmit sidelink data by transmitting a physical sidelink control channel (Physical Sidelink Control Channel, PSCCH) containing sidelink control information (Sidelink Control Information, SCI).

New subcarrier spacings (SubCarrier Spacing, SCS) are introduced in the 52.6GHz-71GHz deployment band, including 480kHz and 960kHz. For these newly introduced SCS, new resource units are introduced, and for improving the spectrum efficiency, SCI of one PSCCH bearer can schedule multiple PSCCHs, for which the resource scheduling problem for such new resource units during the sidelink transmission needs to be solved.

Disclosure of Invention

The embodiment of the application provides a side link transmission method, a side link transmission device and a side link transmission terminal, which can solve the problem of resource scheduling when a plurality of PSSCHs are scheduled through one PSCCH in the side link transmission process.

In a first aspect, a sidelink transmission method is provided, applied to a terminal, and the method includes:

the method comprises the steps that a terminal obtains first information transmitted by a physical side link control channel in a resource unit of a side link, wherein the first information comprises first side link control information; wherein the resource unit includes N time slots;

and the terminal determines the transmission information of M physical side link shared channels in the resource unit scheduled by the physical side link control channel according to the first information, wherein N is greater than or equal to M.

In a second aspect, a sidelink transmission apparatus is provided, comprising:

An acquisition module, configured to acquire first information transmitted by a physical sidelink control channel in a resource unit of a sidelink, where the first information includes first sidelink control information; wherein the resource unit includes N time slots;

and the transmission module is used for determining the transmission information of M physical side link shared channels in the resource unit scheduled by the physical side link control channel according to the first information, wherein N is greater than or equal to M.

In a third aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.

In a fourth aspect, a terminal is provided, including a processor and a communication interface, where the processor is configured to determine, according to the first information, transmission information of M physical sidelink shared channels in the resource unit scheduled by the physical sidelink control channel, N being greater than or equal to M, and the communication interface is configured to obtain first information transmitted by the physical sidelink control channel in the resource unit of the sidelink, where the first information includes first sidelink control information; wherein the resource unit includes N time slots.

In a fifth aspect, a sidelink transmission system is provided, comprising: a terminal and a network side device, the terminal being operable to perform the steps of the sidelink transmission method as described in the first aspect.

In a sixth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the steps of the method according to the first aspect.

In a seventh aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being configured to execute programs or instructions for implementing the method according to the first aspect.

In an eighth aspect, a computer program/program product is provided, the computer program/program product being stored in a storage medium, the computer program/program product being executed by at least one processor to implement the steps of the sidelink transmission method as described in the first aspect.

In the embodiment of the application, first information of PSCCH transmission in a resource unit of a side link is acquired through a terminal, wherein the first information comprises a first SCI; and the terminal determines the transmission information of M PSSCHs in the resource unit scheduled by the PSCCH according to the first information, so that a plurality of PSSCHs in the resource unit can be scheduled by one PSCCH, time-frequency resources in the resource unit are fully utilized, and the utilization rate of the resources is improved.

Drawings

Fig. 1 is a schematic structural diagram of a wireless communication system to which embodiments of the present application are applicable;

fig. 2 is a flow chart of a sidelink transmission method according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a sidelink transmission device according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a terminal for implementing an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It is noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequ)ency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (SC-carrier FrequencyDivision Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a new air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmitting/receiving point (TransmittingReceivingPoint, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiments of the present application, only a base station in an NR system is described as an example, and the specific type of the base station is not limited. The core network device may include, but is not limited to, at least one of: a core network node, a core network function, a mobility management entity (Mobility Management Entity, MME), an access mobility management function (Access and Mobility Management Function, AMF), a session management function (Session Management Function, SMF), a user plane function (User Plane Function, UPF), a policy control function (Policy Control Function, PCF), a policy and charging rules function (Policy and Charging Rules Function, PCRF), an edge application service discovery function (EdgeApplicationServerDiscoveryFunction, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), a home subscriber server (Home Subscriber Server, HSS), a centralized network configuration (Centralized network configuration, CNC), a network storage function (Network Repository Function, NRF), a network opening function (NetworkExposureFunction, NEF), a local NEF (LocalNEF, or L-NEF), a binding support function (Binding Support Function, BSF), an application function (Application Function, AF), and the like. In the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

The method, the device and the terminal for transmitting the sidelink provided by the embodiment of the application are described in detail below by means of some embodiments and application scenes thereof with reference to the accompanying drawings.

As shown in fig. 2, the embodiment of the present application provides a sidelink transmission method, and an execution body of the method may be a terminal performing sidelink communication, including a transmitting end and a receiving end, in other words, the method may be executed by software or hardware installed in the terminal.

Step 210, the terminal obtains first information of PSCCH transmission in a resource unit of a side link, where the first information includes a first SCI; wherein the resource unit includes N time slots.

The embodiments of the present application define a resource unit for a sidelink, where the resource unit includes N timeslots, where N may be specified by a protocol or configured by a higher layer on the network side, e.g., n=4 or 5, etc.

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

Further, the time domain position of each physical channel in the resource unit is determined;

wherein the physical channel may include at least one of:

A PSCCH carrying a first SCI, operable to schedule a plurality of PSCCHs;

PSSCH；

a physical sidelink feedback channel (Physical Sidelink Feedback Channel, PSFCH);

automatic gain control (Automatic Gain Control, AGC) having a power adjustment effect, embodied as repeated transmissions of transmissions carried by at least one of the following channels: PSCCH, PSSCH, PSFCH;

guard Symbols (GAPs), which may be disposed between the PSSCH and the PSFCH.

Step 220, the terminal determines, according to the first information, transmission information of M PSSCHs in the resource unit scheduled by the PSCCH, where N is greater than or equal to M.

The M may be specified by a protocol or configured by a higher layer on the network side, or dynamically displayed or implicitly displayed by SCI or downlink control information (Downlink Control Information, DCI).

It should be appreciated that the transmission information may include time domain resources of the M PSSCHs, frequency domain resources of the M PSSCHs, transmission modes of the M PSSCHs, and the like.

And the terminal can send data of the side link through the M PSSCHs according to the transmission information to realize the side link communication.

As can be seen from the technical solutions provided by the above embodiments of the present invention, in the embodiments of the present invention, a terminal obtains first information transmitted by a PSCCH in a resource unit of a sidelink, where the first information includes a first SCI; and the terminal determines the transmission information of M PSSCHs in the resource unit scheduled by the PSCCH according to the first information, so that a plurality of PSSCHs in the resource unit can be scheduled by one PSCCH, time-frequency resources in the resource unit are fully utilized, and the utilization rate of the resources is improved.

Further, the embodiment of determining the transmission information of the M PSSCHs according to the first information in the step 220 may be varied, and only a few specific embodiments thereof are given in the embodiments of the present application.

In one embodiment, the step 220 may include:

and determining time domain resources of the M PSSCHs according to the first information.

The time domain resource includes a first time slot in which the M PSSCHs are located.

The determining the time domain resources of the M PSSCHs may include:

determining a first time slot in which the M PSSCHs are located;

determining a correspondence of time domain resources of the transmissible PSSCH in the first slot to the PSSCH may include determining a symbol position of the transmissible PSSCH in the first slot.

The manner in which the first time slot is determined may vary, and the embodiments of the present application only give a few specific implementations.

In one embodiment, the time slots in which the M PSSCHs are located are all N time slots in the resource unit.

In another embodiment, in the case that the M first timeslots are consecutive timeslots, determining a first timeslot according to a second timeslot in which the PSCCH is located and a first offset; then, other first time slots are determined based on the first time slot; the first offset is used to indicate an offset between the first time slot and the second time slot, that is, the number of offset time slots, where the first offset may be indicated by the first SCI or DCI, or may be specified by a protocol or configured by a higher layer on the network side.

In another embodiment, each first time slot is determined according to the second time slot in which the PSCCH is located and the first offset group corresponding to the M PSCCHs; wherein the first offset group includes an offset between each first time slot and the second time slot.

The first offset group may be acquired in various manners, and may be determined by the first SCI or DCI indication, or may also be specified by a protocol or configured by a higher layer on the network side. The examples of the present application only show one implementation of them:

acquiring a plurality of configured first offset groups, wherein the plurality of first offset groups can be specified by a protocol or configured by a network side high layer;

and determining a first offset group corresponding to the M PSSCHs from the first offset groups according to the indication information. For example, 2 first offset groups are configured by the network side higher layer: { A1, A2} and { A3, A4}, selecting one { A1, A2} from the 2 first offset groups as the first offset group corresponding to the M PSSCHs according to the indication information, and then determining the corresponding first time slot according to the offsets A1 and A2 respectively based on the position of the second time slot where the PSCCH is located.

The indication information is at least one of the following:

the first SCI;

DCI。

in another embodiment, each first time slot is determined according to an index value corresponding to each first time slot, where the index value of each first time slot may be specified by a protocol or configured by a network side device, or may be determined according to indication information of the first SCI or DCI.

In one embodiment, the method for obtaining the index value corresponding to each first time slot includes:

acquiring a plurality of bit mapping (bitmap) sequences, wherein the bit mapping sequences are used for indicating index values corresponding to each first time slot, and the bit mapping sequences can be specified by a protocol or configured by a network side high-level; for example, if the resource unit includes n=4 slots, the configured plurality of bit map sequences includes {1,0,1,0} {1, 1}, where 1 indicates that the index value of the corresponding slot is the index value of the corresponding first slot. {1,0,1,0} indicates that the index values of the M first slots are the index values of the first slot and the third slot, and {1, 1} indicates that the M first slots are all N slots in the resource unit.

Determining bit mapping sequences corresponding to the M PSSCHs from the plurality of bit mapping sequences according to the indication information; taking the example that the plurality of bit map sequences configured as described above include {1,0,1,0}, {1, 1}, if the PSCCH schedules 2 PSCCHs, the indication information may indicate that the bit map sequence corresponding to the 2 PSCCHs is {1,0,1,0}; if the PSCCH schedules 4 PSSCHs, the bit mapping sequence of the indication information corresponding to the 2 PSSCHs is {1, 1}.

Wherein the indication information is at least one of the following:

the first SCI;

DCI。

in another embodiment, the step 220 may further include:

and determining the frequency domain resources of the M PSSCHs according to the first information.

The frequency domain resources of the M PSSCHs may include subchannels or physical resource blocks (Physical Resource Block, PRBs) corresponding to the M PSSCHs.

In one embodiment, the determining the frequency domain resources of the M PSSCHs includes:

determining second sub-channels corresponding to the M PSSCHs according to the first sub-channels corresponding to the PSCCH and the second offset; wherein the first sub-channel is the smallest sub-channel where the PSCCH is located, the second sub-channel is the smallest sub-channel where the M PSCCHs are located, and the second offset is used to indicate an offset between an index value of the first sub-channel and an index value of the second sub-channel;

and determining the frequency domain resources of the M PSSCHs according to the second sub-channels and the number of the sub-channels occupied by the M PSSCHs.

In another embodiment, the determining the frequency domain resources of the M PSSCHs further includes:

determining second PRBs corresponding to the M PSSCHs according to the first PRBs corresponding to the PSCCH and the second offset; the first PRB is the smallest PRB where the PSCCH is located, the second PRB is the smallest PRB where the M PSCCHs are located, and the second offset is used to indicate an offset between an index value of the first PRB and an index value of the second PRB.

And determining the frequency domain resources of the M PSSCHs according to the second PRB and the number of PRBs occupied by the M PSSCHs.

It should be appreciated that two second offsets for the sub-channels and PRBs may be set, respectively, for determining the second sub-channels and the second PRBs.

It should be understood that, the smallest sub-channel in the embodiments of the present application refers to a sub-channel with the smallest index value, and the smallest PRB refers to a PRB with the smallest index value.

In another embodiment, the second sub-channel is the same as the first sub-channel, or the second PRB is the same as the first PRB.

In another embodiment, the frequency domain resources of the M PSSCHs are the same, i.e. each PSSCH corresponds to the same second sub-channel and/or the same second PRB.

Wherein the second offset, the number of subchannels, and the number of PRBs are determined from at least one of:

the first SCI;

DCI；

protocol specification;

and (5) configuring a network side high-level configuration.

In another embodiment, the step 220 may further include:

and determining the transmission modes of the M PSSCHs according to the first information.

The transmission modes of the M PSSCHs may be various, and in this embodiment of the present application, only two transmission modes are given for illustration:

Transmission mode 1: the M PSSCHs are in one-to-one correspondence with the M transport blocks (TransportBlock, TB), namely, no PSSCH transmits different TBs, no retransmission TB is transmitted, and one TB is mapped to one PSSCH;

transmission mode 2: the M PSSCHs are used for repeatedly transmitting one transport block, i.e., one TB is mapped to each PSSCH, and different PSSCHs transmit the same one TB.

The transmission mode of the M PSSCHs may be determined by at least one of:

the first SCI;

DCI；

protocol specification;

and (5) configuring a network side high-level configuration.

In another embodiment, the step 220 further includes:

determining at least one of the following information according to the first information:

the M PSSCHs are mapped with Resource Elements (REs) of the corresponding TBs;

spatial domain information of the M PSSCHs;

priority of the M PSSCHs;

the reserved PSSCH can be used for retransmission scheduling and the like of the PSSCH;

symbol lengths of demodulation reference signals (Demodulation Reference Signal, DMRS) of the M PSSCHs;

modulation and coding schemes (Modulation and Coding Scheme, MCS) of the M PSSCHs;

the symbol overhead of PSFCH of the first time slot where the M PSSCHs are located;

The format of the second SCI carried by the M PSSCHs and the proportionality coefficient can comprise 2-A,2-B and the like, and the proportionality coefficient is used for calculating the RE number occupied by the second SCI;

time domain resources of DMRS of the PSSCH in the first slot where the M PSSCHs are located;

time-frequency resources of channel state information reference information (Channel State Information ReferenceSignal, CSI-RS) of the M first slots;

time-frequency resources of phase tracking reference signals (Phase Tracking Reference Signal, PT-RS) of the M first slots;

a reservation period of resource reservation of the M first time slots;

a time-frequency pattern of demodulation reference signals of the M first time slots;

and the ports of demodulation reference signals of the M first time slots.

The manner of determining the above information will be described below for different transmission modes, respectively.

For transmission mode 1:

in one embodiment, in determining REs of the M TBs, REs for PSSCH transmission in the TBs are determined based on at least one of:

the number of REs occupied by the PSCCH;

the number of REs occupied by the DMRS of the PSCCH;

an index value of the first slot in the resource unit;

the M;

and N is the same as the N.

In one embodiment, the spatial information of the M PSSCHs is determined by the first SCI indicating the M PSSCHs together or by the first SCI indicating the M PSSCHs separately.

In one embodiment, the priority of the M PSSCHs is indicated uniformly by the first SCI to determine the same priority for the M PSSCHs or indicated separately by the first SCI to determine respective priorities for the M PSSCHs.

In one embodiment, the time-frequency resources of the reserved PSSCH are determined by at least one of:

the time-frequency resource of the reserved PSSCH is determined by the indication of the first SCI;

the time-frequency resource of the first PSSCH in the reserved time-frequency resources of the PSSCH is determined by the indication of the first SCI;

the time-frequency pattern of the time-frequency resource of the reserved PSSCH is the same as the time-frequency pattern of the time-frequency resource of the M PSSCHs.

In one embodiment, the symbol lengths of the DMRS of the M PSSCHs are determined by at least one of:

the symbol length of the DMRS of the M PSSCHs is determined by the unified indication of the first SCI to the M PSSCHs, or by the respective indication of the first SCI to the M PSSCHs;

determining the symbol lengths of the DMRS of the M PSSCHs from the candidate symbol lengths according to the first SCI indication; wherein, the candidate symbol length is regulated by a protocol or configured by a network side high-level.

In one embodiment, the MCS of the M PSSCHs is determined by a unified indication of the M PSSCHs by the first SCI or by respective indications of the M PSSCHs by the first SCI.

In one embodiment, the PSFCH symbol overhead of the slot in which the M PSSCHs are located is determined by a unified indication of the first SCI to the M PSSCHs, or by an indication of the first SCI to the M PSSCHs, respectively.

In one embodiment, the format and scaling factor of the second SCI carried by the M PSSCHs includes at least one of:

each PSSCH carries a corresponding second SCI;

a designated PSSCH among the M PSSCHs carries a second SCI; wherein the specified PSSCH is specified by a protocol or configured by a network side higher layer.

It can be seen that, for the transmission mode 1, the indication content of the first SCI may include the information that indicates the same for the M PSSCHs in a unified manner, or include the information that corresponds to the M PSSCHs respectively. As shown in table 1 below:

TABLE 1

Information indicated by the first SCI	Content of indication of first SCI
		Allocation of time domain resources	M first time slots
Allocation of frequency domain resources	Indicating the same frequency domain resource for M PSSCHs
		Airspace information	Indicating same or different beam information for M PSSCHs
Priority level	Indicating the same or different priorities for M PSSCHs
		Reservation period of resource reservation	M PSSCH as resource reservation units
Time-frequency pattern of DMRS	Indicating the same DMRS time-frequency pattern for M PSSCHs
		Port of DMRS	Ports indicating the same or different DMRS for M PSSCHs
MCS	Indicating the same or different MCS for M PSSCHs
		Symbol overhead for PSFCH	Indicating symbol overhead of the same or different PSFCHs for M PSSCHs
Format of second SCI	Indicating the format of the same or different second SCI for M PSSCHs
		Scaling factor of second SCI	Indicating same or different ratio systems for M PSSCHs

The content indicated by the second SCI may vary, and in one embodiment, the second SCI is used to indicate at least one of the following information of the M PSSCHs:

source Identification (ID) of the M PSSCHs;

target IDs of the M PSSCHs;

region IDs of the M PSSCHs;

communication ranges of the M PSSCHs;

hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ) process numbers for the M PSSCHs;

new data indications (New Data Indicator, NDI) and redundancy versions (Redundancy Version, RV) of the M PSSCHs;

the transmission types of the M PSSCHs;

HARQ feedback enable or disable identification of the M PSSCHs;

CSI requests of the M PSSCHs.

In one embodiment, the second SCI is further configured to indicate that the M PSSCHs have the same source ID, destination ID, zone ID, and communication range.

In one embodiment, the HARQ process numbers of the M PSSCHs are determined by at least one of:

determining a corresponding HARQ process number by a second SCI carried by each PSSCH;

in the case that the HARQ process numbers of the M PSSCHs are consecutive, the HARQ process number of the first PSSCH of 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 may be determined in a manner of +1 in turn based on the HARQ process number of the first PSSCH.

In one embodiment, NDI and RV of the M PSSCHs are determined by at least one of:

determining corresponding NDI and RV by a second SCI carried by each PSSCH;

the number of bits in the second SCI indicating the fields of NDI and RV of the M PSSCHs is dynamic if the number of bits is related to the M;

the number of bits in the second SCI indicating the fields of NDI and RV of the M PSSCHs is static if the number of bits is related to the N, and the number of effective bits in the second SCI indicating the fields of NDI and RV of the M PSSCHs is dynamic if the number of effective bits is related to the M, and the terminal pays attention to only the number of effective bits in demodulating.

In one embodiment, at least one of the following information is collectively indicated by one second SCI or separately indicated by a plurality of second SCIs:

the transmission types of the M PSSCHs;

the feedback enabling identification or disabling identification of the HARQ of the M PSSCHs;

CSI requests of the M PSSCHs.

It can be seen that the second SCI is carried in the PSSCH, and the number of coded modulation symbols of the second SCI is related to: and the first time slot where the second SCI is located allocates the number of sub-carriers of the PSSCH. For transmission mode 1, if the second SCI is carried in each PSSCH, each second SCI indicates the above information of the PSSCH where it is located; if the second SCI is carried in one PSSCH, the indication of the second SCI is shown in table 2 below:

TABLE 2

For transmission mode 2:

in one embodiment, in determining the REs of the M TBs, the REs for PSSCH transmission in each first slot are determined by at least one of:

the number of REs occupied by PSSCHs in a first time slot of the first time slots where the M PSSCHs are located;

and 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.

In one embodiment, the format and scaling factor of PSCCH carried by the M PSCCHs include:

In one embodiment, at least one of the following information is collectively indicated by the first SCI:

priority of the M PSSCHs;

time-frequency resources of the reserved PSSCH;

symbol lengths of DMRSs of the M PSSCHs;

MCS of the M PSSCHs;

the format and scaling factor of the second SCI carried by the M PSSCHs.

It can be seen that for transmission mode 2, the indication content of the first SCI is a unified indication of the M PSSCHs.

source Identification (ID) of the M PSSCHs;

target IDs of the M PSSCHs;

region IDs of the M PSSCHs;

communication ranges of the M PSSCHs;

The transmission types of the M PSSCHs;

HARQ feedback enable or disable identification of the M PSSCHs;

CSI requests of the M PSSCHs.

In one embodiment, at least one of the following information is collectively indicated by a second SCI:

source IDs of the M PSSCHs;

target IDs of the M PSSCHs;

region IDs of the M PSSCHs;

communication ranges of the M PSSCHs;

HARQ process numbers of the M PSSCHs;

NDI and RV of the M PSSCHs;

the transmission types of the M PSSCHs;

CSI requests of the M PSSCHs.

It can be seen that for transmission mode 2, the content of the indication of the second SCI is a uniform indication for each of the M PSSCHs.

In one embodiment, the time domain resource of the DMRS of the PSSCH in the first slot in which the M PSSCHs are located is determined by at least one of:

the number of symbols occupied by the PSCCH of the first time slot;

the number of symbols occupied by PSSCH of the first time slot;

symbol length of DMRS of the PSSCH;

The M;

the N;

an index value of the first slot in the resource unit.

In one embodiment, symbol positions of DMRS of PSSCHs in a first slot in which the M PSSCHs are located are determined by index values of symbols of the first slot in the resource element.

In one embodiment, the symbol positions of the DMRS of the PSSCH in each first slot are the same.

In one embodiment, the number of symbols nominally occupied by the PSSCH of the first slot is determined by at least one of:

the M;

the N;

the number of symbols occupied by the PSCCH.

In one embodiment, the time-frequency resource of the CSI-RS of the first slot in which the M PSSCHs are located is determined by at least one of the following:

obtaining parameters by a CSI request;

a CSI request field, wherein the CSI request field is a CSI request field of a second SCI associated with a PSSCH;

time-frequency position of CSI-RS;

the number of antenna ports of the CSI-RS;

RE density of CSI;

the M;

the N;

an index value of the first slot in the resource unit.

In one embodiment, the time-frequency resource of the PT-RS of the first slot in which the M PSSCHs are located is determined by at least one of:

MCS of the M PSSCHs;

The number of CRC check bits of the first PSCCH;

the M;

the N;

an index value of the first slot in the resource unit.

In one embodiment, the resource reservation of the first slot uses M PSSCHs as resource reservation units.

In one embodiment, the DMRS of the first slot have the same time-frequency pattern.

In one embodiment, the ports of the DMRS of the first slot are determined by the first SCI unified indication or by the respective indications.

As can be seen from the technical solutions provided by the embodiments of the present invention, in the embodiments of the present invention, by determining the time domain resources, the frequency domain resources, and the transmission modes of the M PSSCHs, and determining the other transmission information for different transmission modes, the multiple PSSCHs in a resource unit can be scheduled by one PSCCH, so that time-frequency resources in the resource unit are fully utilized, and the utilization rate of the resources is improved.

In the sidelink transmission method provided in the embodiment of the present application, the execution body may be a sidelink transmission device. In the embodiment of the present application, a method for performing a sidelink transmission by a sidelink transmission device is taken as an example, and the sidelink transmission device provided in the embodiment of the present application is described.

As shown in fig. 3, the sidelink transmission apparatus includes an acquisition module 301 and a transmission module 302. Wherein, the acquiring module 301 is configured to acquire first information transmitted by a physical sidelink control channel in a resource unit of a sidelink, where the first information includes first sidelink control information; wherein the resource unit includes N time slots; the transmission module 302 is configured to determine, according to the first information, transmission information of M physical sidelink shared channels in the resource unit scheduled by the physical sidelink control channel, where N is greater than or equal to M.

Further, a time domain location of a physical channel within the resource unit is determined;

wherein the physical channel comprises at least one of:

a physical sidelink control channel;

physical sidelink shared channels;

a physical sidelink feedback channel;

automatic gain control;

the symbol is protected.

As can be seen from the technical solutions provided by the above embodiments of the present invention, the embodiments of the present invention obtain first information of PSCCH transmission in a resource unit of a sidelink, where the first information includes a first SCI; and determining the transmission information of M PSSCHs in the resource unit scheduled by the PSCCH according to the first information, so that a plurality of PSSCHs in the resource unit can be scheduled by one PSCCH, time-frequency resources in the resource unit can be fully utilized, and the utilization rate of the resources can be improved.

Based on the above embodiment, further, the transmission module is configured to perform at least one of:

determining time domain resources of the M physical side link shared channels;

determining frequency domain resources of the M physical side link shared channels;

and determining the transmission mode of the M physical side link shared channels.

Further, the transmission module is configured to determine a first time slot in which the M physical sidelink shared channels are located according to at least one of:

The first time slot where the M physical side link shared channels are located is all N time slots in the resource unit;

under the condition that M first time slots are continuous time slots, determining a first time slot according to a second time slot where the physical side link control channel is located and a first offset; wherein the first offset is used to indicate an offset between a first time slot and the second time slot.

Determining each first time slot according to 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; wherein the first offset group includes an offset between each first time slot and the second time slot.

And determining each first time slot according to the index value corresponding to each first time slot.

Further, the obtaining manner of the first offset group includes:

acquiring a plurality of configured first offset groups;

determining a first offset group corresponding to the M physical side link shared channels from the plurality of first offset groups according to the indication information;

wherein the indication information is at least one of the following:

the first sidelink control information;

Downlink control information.

Further, the method for obtaining the index value corresponding to each first time slot includes:

acquiring a plurality of bit mapping sequences, wherein the bit mapping sequences are used for indicating index values corresponding to the first time slots;

determining bit mapping sequences corresponding to the M physical sidelink shared channels from the plurality of bit mapping sequences according to the indication information;

wherein the indication information is at least one of the following:

the first sidelink control information;

downlink control information.

Further, the transmission module is configured to:

determining a second sub-channel or a second physical resource block corresponding to the M physical side link shared channels according to a first sub-channel or a first physical resource block corresponding to the physical side link control channel and a second offset; the first sub-channel is the smallest sub-channel where the physical side link control channel is located, the first physical resource block is the smallest physical resource block where the physical side link control channel is located, the second sub-channel is the smallest sub-channel where the M physical side link shared channels are located, and the second physical resource block is the smallest physical resource block where the M physical side link shared channels are located;

And determining the frequency domain resources of the M physical side link shared channels according to the second sub-channels or the second physical resource blocks and the number of sub-channels or the number of physical resource blocks occupied by the M physical side link shared channels.

Further, 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.

Further, the frequency domain resources of the M physical sidelink shared channels are the same.

Further, the transmission mode of the M physical sidelink shared channels includes at least one of the following:

the M physical side link shared channels are in one-to-one correspondence with the M transmission blocks;

the M physical sidelink shared channels are used for repeating transmission of one transport block.

Further, the transmission mode is determined by at least one of:

the first sidelink control information;

downlink control information;

protocol specification;

and (5) configuring a network side high-level configuration.

Further, the transmission module is further configured to determine at least one of the following information:

mapping the M physical side link shared channels with the resource units of the corresponding transmission blocks;

spatial information of the M physical side link shared channels;

Priority of the M physical side link shared channels;

the reserved physical side link shares the time-frequency resource of the channel;

symbol lengths of demodulation reference signals of the M physical side link shared channels;

modulation and coding schemes of the M physical sidelink shared channels;

the symbol overhead of the physical side link feedback channel of the first time slot where the M physical side link shared channels are located;

the format and the proportionality coefficient of the second side link control information carried by the M physical side link shared channels;

time domain resources of demodulation reference signals of physical side link shared channels in the M first time slots;

time-frequency resources of channel state information reference information of the M first time slots;

the phases of the M first time slots track the time-frequency resource of the reference signal;

a reservation period of resource reservation of the M first time slots;

and a port of the demodulation reference signal of the first time slot.

Further, in the case that the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, the transmission module is further configured to determine a resource unit for physical sidelink shared channel transmission in the transport block based on at least one of:

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;

an index value of the first slot in the resource unit;

the M;

and N is the same as the N.

Further, the spatial information of the M physical sidelink shared channels is determined by the unified indication or the respective indication of the first sidelink control information.

Further, in the case that the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, the priorities of the M physical sidelink shared channels are determined by the unified indication or the respective indications of the first sidelink control information.

Further, in the case that the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, the time-frequency resource of the reserved physical sidelink shared channels is determined by at least one of the following:

the time-frequency resource of the reserved physical side link shared channel is determined by the indication of the first side link control information;

the time-frequency resource of the first physical side link shared channel in the time-frequency resources of the reserved physical side link shared channel is determined by the indication of the first side link control information;

The time-frequency pattern of the time-frequency resource of the reserved physical side link shared channels is the same as the time-frequency pattern of the time-frequency resource of the M physical side link shared channels.

Further, in the case that the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, symbol lengths of demodulation reference signals of the M physical sidelink shared channels are determined by at least one of:

the symbol length of the demodulation reference signals of the M physical side link shared channels is determined by the unified indication or the respective indication of the first side link control information;

determining the symbol lengths of demodulation reference signals of the M physical side link shared channels from candidate symbol lengths according to the first side link control information indication; wherein, the candidate symbol length is regulated by a protocol or configured by a network side high-level.

Further, in the case that the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, the modulation and coding schemes of the M physical sidelink shared channels are determined by a unified indication or separate indications of the first sidelink control information.

Further, in the case that the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, symbol overhead of a physical sidelink feedback channel of a time slot where the M physical sidelink shared channels are located is determined by a unified indication or a separate indication of the first sidelink control information.

Further, in the case that the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, the format and the scaling factor of the second sidelink control information carried by the M physical sidelink shared channels include at least one of the following:

each physical side link shared channel bears corresponding second side link control information;

carrying second side link control information on a designated physical side link shared channel in the M physical side link shared channels; wherein the specified physical sidelink shared channel is specified by a protocol or configured by a network side higher layer.

Further, the second sidelink control information is used for indicating at least one of the following information of the M physical sidelink shared channels:

source identification of the M physical sidelink shared channels;

target identifiers of the M physical side link shared channels;

the region identification of the M physical side link shared channels;

the communication range of the M physical side link shared channels;

the hybrid automatic repeat request process numbers of the M physical side link shared channels;

new data indication and redundancy versions of the M physical sidelink shared channels;

the transmission type of the M physical side link shared channels;

The hybrid automatic repeat request of the M physical side link shared channels feeds back an enabling identifier or a disabling identifier;

and the channel state information of the M physical side link shared channels is requested.

Further, the second sidelink control information is used for indicating that the M physical sidelink shared channels have the same source identifier, target identifier, area identifier and communication range.

Further, in the case that the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, the hybrid automatic repeat request process number of the M physical sidelink shared channels is determined by at least one of:

determining a corresponding hybrid automatic repeat request process number by the second side link control information carried by each physical side link shared channel;

and under the condition that the mixed automatic retransmission request process numbers of the M physical side link shared channels are continuous, the mixed automatic retransmission request process number of the first physical side link shared channel in the M physical side link shared channels is indicated by the second side link control information, and the mixed automatic retransmission request process numbers of the rest physical side link shared channels are determined based on the mixed automatic retransmission request process number of the first physical side link shared channel.

Further, in the case that the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, the new data indication and redundancy version of the M physical sidelink shared channels are determined by at least one of:

determining corresponding new data indication and redundancy version by second side link control information carried by each physical side link shared channel;

the number of bits in the second sidelink control information used for indicating new data indication and redundancy version domains of the M physical sidelink shared channels is related to the M;

the number of bits in the second sidelink control information indicating the domain of the new data indication and redundancy version of the M physical sidelink shared channels is related to the N, and the number of valid bits in the second sidelink control information indicating the domain of the new data indication and redundancy version of the M physical sidelink shared channels is related to the M.

Further, in the case that the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, at least one of the following information is indicated by one second sidelink control information or indicated by a plurality of second sidelink control information respectively:

the transmission type of the M physical side link shared channels;

Further, in case the M physical sidelink shared channels are used for repeating transmission of one transport block, the transmission module is further configured to determine a resource unit for physical sidelink shared channel transmission in each first time slot by at least one of:

the number of resource units occupied by the physical side link control channels in a first time slot of the first time slots where the M physical side link shared channels are located;

and the number of resource units occupied by demodulation reference signals of the physical side link control channels in the first time slot of the first time slot where the M physical side link shared channels are located.

Further, in the case that the M physical sidelink shared channels are used for repeatedly transmitting one transport block, the format and the scaling factor of the second sidelink control information carried by the M physical sidelink shared channels include: carrying second side link control information on a designated physical side link shared channel in the M physical side link shared channels; wherein the specified physical sidelink shared channel is specified by a protocol or configured by a network side higher layer.

Further, in the case that the M physical sidelink shared channels are used for repeatedly transmitting one transport block, at least one of the following information is collectively indicated by the first sidelink control information:

priority of the M physical side link shared channels;

modulation and coding schemes of the M physical sidelink shared channels;

and the formats and the proportionality coefficients of the second side link control information carried by the M physical side link shared channels.

source identification of the M physical sidelink shared channels;

target identifiers of the M physical side link shared channels;

the region identification of the M physical side link shared channels;

the communication range of the M physical side link shared channels;

the transmission type of the M physical side link shared channels;

Further, in the case that the M physical sidelink shared channels are used for repeating transmission of one transport block, at least one of the following information is collectively indicated by one second sidelink control information:

source identification of the M physical sidelink shared channels;

target identifiers of the M physical side link shared channels;

the region identification of the M physical side link shared channels;

the communication range of the M physical side link shared channels;

the transmission type of the M physical side link shared channels;

Further, the time domain resource of the demodulation reference signal of the physical sidelink shared channel in the first time slot is determined by at least one of:

the number of symbols occupied by the physical sidelink control channel of the first time slot;

the number of symbols occupied by the physical sidelink shared channel of the first time slot;

symbol length of demodulation reference signal of the physical side link shared channel;

the M;

the N;

an index value of the first slot in the resource unit.

Further, symbol positions of demodulation reference signals of a physical sidelink shared channel in a first time slot are determined by index values of symbols of the first time slot in the resource units.

Further, the symbol positions of the demodulation reference signals of the physical sidelink shared channel in each first slot are the same.

Further, the number of symbols nominally occupied by the physical sidelink control channel of the first time slot is determined by at least one of:

the M;

the N;

the number of symbols occupied by the physical sidelink control channel.

Further, the time-frequency resource of the channel state information reference information of the first time slot is determined by at least one of:

the channel state information requests for acquisition parameters;

a channel state information request field;

time-frequency position of channel state information reference information;

the number of antenna ports of the channel state information reference information;

resource unit density of channel state information;

the M;

the N;

an index value of the first slot in the resource unit.

Further, the time-frequency resource of the phase tracking reference signal of the first slot is determined by at least one of:

modulation and coding schemes of the M physical sidelink shared channels;

the number of cyclic redundancy check bits of the first sidelink control information;

the M;

the N;

an index value of the first slot in the resource unit.

Further, the resource reservation of the first time slot takes M physical side link shared channels as resource reservation units.

Further, the time-frequency patterns of the demodulation reference signals of the first time slot are the same.

Further, the port of the demodulation reference signal of the first time slot is determined by the unified indication of the first side link control information or determined by the indication of the first side link control information.

The sidelink transmission device in the embodiment of the application may be an electronic device, for example, an electronic device with an operating system, or may be a component in the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.

The sidelink transmission device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 2, and achieve the same technical effects, so that repetition is avoided, and no further description is provided herein.

Optionally, as shown in fig. 4, the embodiment of the present application further provides a communication device 400, including a processor 401 and a memory 402, where the memory 402 stores a program or instructions that can be executed on the processor 401, for example, when the communication device 400 is a terminal, the program or instructions implement the steps of the foregoing embodiment of the sidelink transmission method when executed by the processor 401, and achieve the same technical effects. When the communication device 400 is a network side device, the program or the instruction, when executed by the processor 401, implements the steps of the above-described embodiment of the sidelink transmission method, and the same technical effects can be achieved, so that repetition is avoided, and no detailed description is given here.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the processor is used for determining transmission information of M physical side link shared channels in the resource unit scheduled by the physical side link control channel according to the first information, N is greater than or equal to M, and the communication interface is used for acquiring first information transmitted by the physical side link control channel in the resource unit of the side link, and the first information comprises first side link control information; wherein the resource unit includes N time slots. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 5 is a schematic hardware structure of a terminal for implementing an embodiment of the present application.

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

Those skilled in the art will appreciate that the terminal 500 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically coupled to the processor 510 via a power management system so as to perform functions such as managing charging, discharging, and power consumption via the power management system. The terminal structure shown in fig. 5 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 504 may include a graphics processing unit (Graphics Processing Unit, GPU) 5041 and a microphone 5042, with the graphics processor 5041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 506 may include a display panel 5061, and the display panel 5061 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. Touch panel 5071, also referred to as a touch screen. Touch panel 5071 may include two parts, a touch detection device and a touch controller. Other input devices 5072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In this embodiment, after receiving downlink data from the network side device, the radio frequency unit 501 may transmit the downlink data to the processor 510 for processing; in addition, the radio frequency unit 501 may send uplink data to the network side device. Typically, the radio frequency unit 501 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 509 may be used to store software programs or instructions as well as various data. The memory 509 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 509 may include volatile memory or nonvolatile memory, or the memory 509 may include both volatile and nonvolatile memory. The non-volatile memory may be a Read-only memory (ROM), a programmable Read-only memory (ProgrammableROM, PROM), an erasable programmable Read-only memory (ErasablePROM, EPROM), an electrically erasable programmable Read-only memory (ElectricallyEPROM, EEPROM), or a flash memory, among others. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 509 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

Processor 510 may include one or more processing units; optionally, the processor 510 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 510.

The radio frequency unit 501 is configured to obtain first information transmitted by a physical sidelink control channel in a resource unit of a sidelink, where the first information includes first sidelink control information; wherein the resource unit includes N time slots.

And a processor 510, configured to determine, according to the first information, transmission information of M physical sidelink shared channels in the resource unit scheduled by the physical sidelink control channel, where N is greater than or equal to M.

wherein the physical channel comprises at least one of:

a physical sidelink control channel;

physical sidelink shared channels;

a physical sidelink feedback channel;

automatic gain control;

The symbol is protected.

According to the method and the device, the PSSCHs in the resource unit can be scheduled through one PSCCH, so that time-frequency resources in the resource unit are fully utilized, and the utilization rate of the resources is improved.

Further, the processor 510 is configured to perform at least one of:

determining time domain resources of the M physical side link shared channels;

Further, the processor 510 is configured to:

determining a first time slot where the M physical sidelink shared channels are located according to at least one of the following:

Further, the obtaining manner of the first offset group includes:

acquiring a plurality of configured first offset groups;

wherein the indication information is at least one of the following:

the first sidelink control information;

downlink control information.

wherein the indication information is at least one of the following:

the first sidelink control information;

downlink control information.

Further, the processor 510 is further configured to:

Further, the processor 510 is further configured to perform at least one of:

Further, the transmission mode is determined by at least one of:

the first sidelink control information;

downlink control information;

protocol specification;

and (5) configuring a network side high-level configuration.

Further, the processor 510 is further configured to perform at least one of the following:

spatial information of the M physical side link shared channels;

priority of the M physical side link shared channels;

modulation and coding schemes of the M physical sidelink shared channels;

a reservation period of resource reservation of the M first time slots;

and the ports of demodulation reference signals of the M first time slots.

Further, in case that the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, the processor 510 is further configured to, when determining the resource units of the M transport blocks:

determining resource units in the transport block for physical sidelink shared channel transmission based on at least one of:

an index value of the first slot in the resource unit;

the M;

and N is the same as the N.

Further, in case the M physical sidelink shared channels are used for repeating transmission of one transport block, the processor 510 is further configured to, when determining the resource units of the M transport blocks:

determining resource units for physical sidelink shared channel transmission in each first time slot by at least one of:

priority of the M physical side link shared channels;

modulation and coding schemes of the M physical sidelink shared channels;

the symbol overhead of the physical sidelink feedback channel of the first time slot;

source identification of the M physical sidelink shared channels;

target identifiers of the M physical side link shared channels;

the region identification of the M physical side link shared channels;

the communication range of the M physical side link shared channels;

The transmission type of the M physical side link shared channels;

the transmission type of the M physical side link shared channels;

source identification of the M physical sidelink shared channels;

target identifiers of the M physical side link shared channels;

the region identification of the M physical side link shared channels;

the communication range of the M physical side link shared channels;

the transmission type of the M physical side link shared channels;

the M;

the N;

an index value of the first slot in the resource unit.

the M;

the N;

the number of symbols occupied by the physical sidelink control channel.

the channel state information requests for acquisition parameters;

a channel state information request field;

time-frequency position of channel state information reference information;

Resource unit density of channel state information;

the M;

the N;

an index value of the first slot in the resource unit.

modulation and coding schemes of the M physical sidelink shared channels;

the M;

the N;

an index value of the first slot in the resource unit.

Further, the resource reservation of the first time slot takes M physical sidelink shared channels as resource reservation units.

Further, the method is characterized in that the time-frequency patterns of the demodulation reference signals of the first time slot are the same.

Further, the port of the demodulation reference signal of the first time slot is determined by the unified indication of the first side link control information or determined by the respective indication.

wherein the physical channel comprises at least one of:

a physical sidelink control channel;

physical sidelink shared channels;

a physical sidelink feedback channel;

automatic gain control;

the symbol is protected.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the processes of the foregoing embodiments of the sidelink transmission method are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction, implement each process of the above-mentioned sidelink transmission method embodiment, and achieve the same technical effect, so that repetition is avoided, and no further description is given here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product, which is stored in a storage medium, and executed by at least one processor to implement the respective processes of the above-mentioned sidelink transmission method embodiment, and achieve the same technical effects, and are not repeated herein.

The embodiment of the application also provides a side link transmission system, which comprises: a plurality of terminals and network side devices, said terminals being operable to perform the steps of the sidelink transmission method as described above.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A method of sidelink transmission, comprising:

2. The method of claim 1, wherein said determining transmission information for M physical sidelink shared channels within said resource units of said physical sidelink control channel schedule comprises at least one of:

determining time domain resources of the M physical side link shared channels;

3. The method of claim 2, wherein said determining the time domain resources of the M physical sidelink shared channels comprises:

under the condition that M first time slots are continuous time slots, determining a first time slot according to a second time slot where the physical side link control channel is located and a first offset; wherein the first offset is used to indicate an offset between a first time slot and the second time slot;

determining each first time slot according to 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; wherein the first offset group includes offsets between each first time slot and the second time slot;

4. The method of claim 3, wherein the obtaining the first offset group includes:

acquiring a plurality of configured first offset groups;

wherein the indication information is at least one of the following:

The first sidelink control information;

downlink control information.

5. The method of claim 3, wherein the obtaining the index value corresponding to each first time slot includes:

wherein the indication information is at least one of the following:

the first sidelink control information;

downlink control information.

6. The method of claim 2, wherein said determining the frequency domain resources of the M physical sidelink shared channels comprises:

7. The method of claim 6, wherein the second subchannel is the same as the first subchannel or the second physical resource block is the same as the first physical resource block.

8. The method of claim 2, 6 or 7, wherein the frequency domain resources of the M physical sidelink shared channels are the same.

9. The method of claim 2, wherein the transmission mode of the M physical sidelink shared channels comprises at least one of:

10. The method of claim 8, wherein the transmission mode is determined by at least one of:

the first sidelink control information;

downlink control information;

protocol specification;

and (5) configuring a network side high-level configuration.

11. The method of claim 9, wherein said determining transmission information for M physical sidelink shared channels within said resource units of said physical sidelink control channel schedule further comprises determining at least one of:

spatial information of the M physical side link shared channels;

priority of the M physical side link shared channels;

modulation and coding schemes of the M physical sidelink shared channels;

a reservation period of resource reservation of the M first time slots;

and the ports of demodulation reference signals of the M first time slots.

12. The method of claim 11, wherein in determining the resource units of the M transport blocks, if the M physical sidelink shared channels are in a one-to-one correspondence with the M transport blocks, the method further comprises:

an index value of the first slot in the resource unit;

the M;

and N is the same as the N.

13. The method of claim 11, wherein in the case where the M physical sidelink shared channels are used for repeating transmission of one transport block, when determining the resource units of the M transport blocks, the method further comprises:

14. The method of claim 11, wherein the spatial information of the M physical sidelink shared channels is determined by the first sidelink control information unified indication or by a separate indication.

15. The method of claim 11, wherein the priorities of the M physical sidelink shared channels are determined by the first sidelink control information unified indication or respectively indicated in case that the M physical sidelink shared channels are in one-to-one correspondence with M transport blocks.

16. The method of claim 11, wherein in the case where the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, the time-frequency resources of the reserved physical sidelink shared channels are determined by at least one of:

17. The method of claim 11, wherein in the case that the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, a symbol length of the demodulation reference signals of the M physical sidelink shared channels is determined by at least one of:

18. The method of claim 11, wherein the modulation and coding scheme of the M physical sidelink shared channels is determined by a unified indication or a separate indication of the first sidelink control information, in case the M physical sidelink shared channels are in one-to-one correspondence with M transport blocks.

19. The method of claim 11, wherein symbol overhead of a physical sidelink feedback channel of a slot in which the M physical sidelink shared channels are located is determined by a unified indication or a separate indication of the first sidelink control information, in a case where the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks.

20. The method of claim 11, wherein in the case that the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, the format and scaling factor of the second sidelink control information carried by the M physical sidelink shared channels comprises at least one of:

21. The method of claim 11, wherein in the case that the M physical sidelink shared channels are used for repeatedly transmitting one transport block, the format and scaling factor of the second sidelink control information carried by the M physical sidelink shared channels comprises: carrying second side link control information on a designated physical side link shared channel in the M physical side link shared channels; wherein the specified physical sidelink shared channel is specified by a protocol or configured by a network side higher layer.

22. The method of claim 11, wherein in the case that the M physical sidelink shared channels are used for repeating transmission of one transport block, at least one of the following information is collectively indicated by the first sidelink control information:

priority of the M physical side link shared channels;

modulation and coding schemes of the M physical sidelink shared channels;

23. The method of claim 11, wherein the second sidelink control information is used to indicate at least one of the following information for the M physical sidelink shared channels:

source identification of the M physical sidelink shared channels;

target identifiers of the M physical side link shared channels;

the region identification of the M physical side link shared channels;

the communication range of the M physical side link shared channels;

the transmission type of the M physical side link shared channels;

24. The method of claim 23, wherein the second sidelink control information is used to indicate that M physical sidelink shared channels have the same source identification, destination identification, region identification and communication range.

25. The method of claim 23, wherein in the case where the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, the hybrid automatic repeat request process number of the M physical sidelink shared channels is determined by at least one of:

26. The method of claim 23, wherein in the case where the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, the new data indication and redundancy version of the M physical sidelink shared channels are determined by at least one of:

27. The method of claim 23, wherein in the case that the M physical sidelink shared channels are in one-to-one correspondence with the M transport blocks, at least one of the following information is collectively indicated by one second sidelink control information or is respectively indicated by a plurality of second sidelink control information:

The transmission type of the M physical side link shared channels;

28. The method of claim 23, wherein in the case that the M physical sidelink shared channels are used for repeating transmission of one transport block, at least one of the following information is collectively indicated by one second sidelink control information:

source identification of the M physical sidelink shared channels;

target identifiers of the M physical side link shared channels;

the region identification of the M physical side link shared channels;

the communication range of the M physical side link shared channels;

the transmission type of the M physical side link shared channels;

29. The method of claim 11, wherein 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 M;

the N;

an index value of the first slot in the resource unit.

30. The method of claim 29 wherein the symbol positions of the demodulation reference signals of the physical sidelink shared channel in the first time slot are determined by the index values of the symbols of the first time slot in the resource units.

31. The method of claim 29 wherein the symbol positions of the demodulation reference signals of the physical sidelink shared channel in each of the first slots are the same.

32. The method of claim 31, wherein the number of symbols nominally occupied by the physical sidelink control channel of the first time slot is determined by at least one of:

the M;

the N;

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

33. The method of claim 11, wherein the time-frequency resources of the channel state information reference information for the first time slot are determined by at least one of:

the channel state information requests for acquisition parameters;

a channel state information request field;

time-frequency position of channel state information reference information;

resource unit density of channel state information;

the M;

the N;

an index value of the first slot in the resource unit.

34. The method of claim 11, wherein the time-frequency resource of the phase tracking reference signal of the first slot is determined by at least one of:

modulation and coding schemes of the M physical sidelink shared channels;

the M;

the N;

an index value of the first slot in the resource unit.

35. The method of claim 11 wherein the resource reservation of the first time slot uses M physical sidelink shared channels as resource reservation units.

36. The method of claim 11 wherein the time-frequency patterns of the demodulation reference signals of the first time slots are all the same.

37. The method of claim 11, wherein the ports of the demodulation reference signals of the first time slot are determined by the first sidelink control information unified indication or by respective indications.

38. The method of claim 1, wherein the time domain location of the physical channel within the resource unit is determined;

wherein the physical channel comprises at least one of:

a physical sidelink control channel;

physical sidelink shared channels;

a physical sidelink feedback channel;

automatic gain control;

the symbol is protected.

39. A sidelink transmission apparatus, comprising:

40. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, performs the steps of the sidelink transmission method of any of claims 1 to 38.

41. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the sidelink transmission method of any of claims 1-38.