Lateral communication method and device

Abstract

The invention relates to a sidewalk communication method and equipment, and the method comprises the steps that a first terminal obtains a sending resource of sidewalk positioning related information according to a sending resource of first sidewalk information, and the sending resource of the sidewalk positioning related information comprises one or more available sending starting points. The sending resource of the sidewalk positioning related information is acquired through the sending resource of the first sidewalk information, so that the sending chance of the sidewalk positioning related information can be improved by utilizing the sending resource of the first sidewalk information, and the positioning reliability and the positioning precision are improved.

Description

Sideline communication method and device Technical Field

[0001] The present application relates to the field of communications, and more specifically, to a sideline communication method and device. Background Art

[0002] Sidelink communications include sidelink transmissions over unlicensed spectrum (SL-U). On unlicensed spectrum, terminals typically must first perform a listen-before-talk (LBT) check before accessing the channel. If LBT fails to complete before the specified transmission start point, the terminal may miss the transmission opportunity.

[0003] Summary of the Invention

[0004] The embodiments of the present application provide a sidewalk communication method, a terminal device, and a network device, which can increase the opportunity to send sidewalk positioning related information.

[0005] An embodiment of the present application provides a sidewalk communication method, including: a first terminal obtains a sending resource of sidewalk positioning related information based on a sending resource of first sidewalk information, where the sending resource of the sidewalk positioning related information includes one or more available sending starting points.

[0006] An embodiment of the present application provides a sideline communication method, including: a first terminal receives first information, wherein the first information is used to configure or pre-configure the sending resources of sideline positioning related information within an SL BWP or within a shared resource pool, and the sending resources of the sideline positioning related information include one or more available sending starting points.

[0007] An embodiment of the present application provides a sideline communication method, including: a network device sends first information to a first terminal, wherein the first information is used to configure or pre-configure sideline positioning related information sending resources within an SL BWP or within a shared resource pool for the first terminal, and the sideline positioning related information sending resources include one or more available sending starting points.

[0008] An embodiment of the present application provides a first terminal, including: a processing unit, configured to obtain a sending resource of sideline positioning related information according to a sending resource of first sideline information, wherein the sending resource of the sideline positioning related information includes one or more available sending starting points.

[0009] An embodiment of the present application provides a first terminal, including: a receiving unit, used to receive first information, wherein the first information is used to configure or pre-configure the sending resources of sideline positioning related information within the SL BWP or within the shared resource pool, and the sending resources of the sideline positioning related information include one or more available sending starting points.

[0010] An embodiment of the present application provides a network device, including: a sending unit, used to send first information to a first terminal, wherein the first information is used to configure or pre-configure sending resources for sideline positioning related information within an SL BWP or within a shared resource pool for the first terminal, and the sending resources for sideline positioning related information include one or more available sending starting points.

[0011] An embodiment of the present application provides a terminal device, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the above-mentioned sideline communication method.

[0012] An embodiment of the present application provides a network device, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the network device executes the above-mentioned sideline communication method.

[0013] The embodiment of the present application provides a chip for implementing the above-mentioned sideline communication method. Specifically, the chip includes: a processor for calling and running a computer program from a memory, so that a device equipped with the chip executes the above-mentioned sideline communication method.

[0014] An embodiment of the present application provides a computer-readable storage medium for storing a computer program. When the computer program is executed by a device, the device executes the above-mentioned sideline communication method.

[0015] An embodiment of the present application provides a computer program product, including computer program instructions, which enable a computer to execute the above-mentioned sideline communication method.

[0016] An embodiment of the present application provides a computer program, which, when executed on a computer, enables the computer to execute the above-mentioned sideline communication method.

[0017] In this embodiment of the present application, the sending resources of the first side information are used to obtain the sending resources of the side positioning related information. The sending resources of the first side information can be used to increase the sending opportunities of the side positioning related information, thereby improving positioning reliability and positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic diagram showing that part of symbols in a time slot are used for SL transmission according to an embodiment of the present application.

[0019] FIG2 is a schematic diagram showing the existence of PSCCH and PSSCH in a sidelink timeslot according to an embodiment of the present application.

[0020] FIG3 is a schematic diagram of a demodulation reference signal of a PSSCH according to an embodiment of the present application.

[0021] Figure 4 is a schematic diagram of supporting two frequency domain DMRSs in NR PDSCH and PUSCH according to an embodiment of the present application.

[0022] Figure 5 is a schematic diagram of PSCCH and PSSCH resource pools in NR-V2X according to an embodiment of the present application.

[0023] Figure 6 is a schematic diagram of the NR system time slot structure according to an embodiment of the present application.

[0024] FIG7 is a schematic diagram of determining NR-V2X time domain resources according to an embodiment of the present application.

[0025] FIG8 is a schematic diagram of interleaved resource blocks according to an embodiment of the present application.

[0026] FIG9 is a schematic diagram of a frame structure based on interleaved resource blocks according to an embodiment of the present application.

[0027] FIG10 is a schematic diagram of an RB set according to an embodiment of the present application.

[0028] FIG11 is a schematic flowchart of a sideline communication method according to an embodiment of the present application.

[0029] FIG12 is a schematic flowchart of a sideline communication method according to another embodiment of the present application.

[0030] FIG13 is a schematic flowchart of a sideline communication method according to another embodiment of the present application.

[0031] FIG14 is a schematic flowchart of a sideline communication method according to another embodiment of the present application.

[0032] FIG15 is a schematic flowchart of a sideline communication method according to another embodiment of the present application.

[0033] FIG16 is a schematic flowchart of a sideline communication method according to another embodiment of the present application.

[0034] FIG17 is a schematic flowchart of a sideline communication method according to another embodiment of the present application.

[0035] Figure 18 is a schematic diagram of a UE starting to send SL PRS according to the time of completing LBT according to an embodiment of the present application.

[0036] FIG19 is a schematic block diagram of a first terminal according to an embodiment of the present application.

[0037] FIG20 is a schematic block diagram of a first terminal according to another embodiment of the present application.

[0038] FIG21 is a schematic block diagram of a first terminal according to an embodiment of the present application.

[0039] Figure 22 is a schematic block diagram of a network device according to an embodiment of the present application.

[0040] Figure 23 is a schematic block diagram of a communication device according to an embodiment of the present application.

[0041] Figure 24 is a schematic block diagram of a chip according to an embodiment of the present application.

[0042] Figure 25 is a schematic block diagram of a communication system according to an embodiment of the present application. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0044] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0045] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0046] In one embodiment, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, and a standalone (SA) networking scenario.

[0047] In one embodiment, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, wherein the authorized spectrum can also be considered as an unshared spectrum.

[0048] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0049] The terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0050] In an embodiment of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.).

[0051] In an embodiment of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0052] As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0053] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a future evolved PLMN network or a network device in an NTN network, etc.

[0054] As an example and not a limitation, in an embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Alternatively, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0055] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0056] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0057] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0058] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0059] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0060] NR-V2X time slot structure

[0061] In NR-V2X, the Physical Sidelink Shared Channel (PSSCH) and its associated Physical Sidelink Control Channel (PSCCH) are transmitted in the same time slot, and the PSCCH occupies 2 or 3 time domain symbols. The time domain resource allocation of NR-V2X is based on the time slot as the allocation granularity. The starting point and length of the time domain symbols used for sidelink transmission in a time slot are configured by the parameters sl-startSLsymbols and sl-lengthSLsymbols. The last symbol in this part of symbols is used as the guard period (GP), and PSSCH and PSCCH can only use the remaining time domain symbols. However, if the Physical Sidelink Feedback Channel (PSFCH) transmission resources are configured in a time slot, PSSCH and PSCCH cannot occupy the time domain symbols used for PSFCH transmission, as well as the automatic gain control (AGC) and GP symbols before the symbol.

[0062] As shown in Figure 1, the network configures the sidelink start symbol (sl-StartSymbol) to 0 and the sidelink symbol length (sl-LengthSymbols) to 14. This means that the 14 time-domain symbols starting from symbol index #0 in a time slot can be used for sidelink transmission. This time slot contains PSFCH transmission resources. The PSFCH occupies symbols 11 and 12, with symbol 11 serving as the PSFCH AGC symbol and symbols 10 and 13 serving as GPs. The time-domain symbols available for PSSCH transmission are symbols #0 through 9. The PSCCH occupies three time-domain symbols: symbols 0, 1, and 2, with symbol 0 typically serving as the AGC symbol.

[0063] In NR-V2X, in addition to the PSCCH and PSSCH, a PSFCH may also exist within a sidelink time slot, as shown in Figure 2. As can be seen, within a time slot, the first Orthogonal Frequency Division Multiplexing (OFDM) symbol is fixedly used for automatic gain control (AGC). On the AGC symbol, the UE replicates the information sent on the second symbol. A symbol is reserved at the end of the time slot for transceiver switching, allowing the UE to transition from transmit (or receive) to receive (or transmit) mode. In the remaining OFDM symbols, the PSCCH can occupy two or three OFDM symbols starting with the second sidelink symbol. In the frequency domain, the number of physical resource blocks (PRBs) occupied by the PSCCH falls within the subband range of a PSSCH. If the number of PRBs occupied by the PSCCH is less than the size of a PSSCH subchannel, or if the frequency domain resources of the PSSCH include multiple subchannels, the PSCCH can be frequency-division multiplexed with the PSSCH in the OFDM symbol where the PSCCH resides.

[0064] The demodulation reference signal (DMRS) for PSSCH in NR-V2X draws on the design of the NR Uu interface and adopts multiple time-domain PSSCH DMRS patterns. Within a resource pool, the number of available DMRS patterns is related to the number of PSSCH symbols in the resource pool. For a specific number of PSSCH symbols (including the first AGC symbol) and PSCCH symbols, examples of available DMRS patterns and the position of each DMRS symbol within the pattern are shown in Table 1. Figure 3 shows a schematic diagram of the time-domain position of four DMRS symbols when the PSSCH has 13 symbols.

[0065] Table 1 Number and position of DMRS symbols under different PSSCH and PSCCH symbol numbers

[0066]

[0067] If multiple time-domain DMRS patterns are configured within the resource pool, the transmitting UE selects the specific time-domain DMRS pattern to use and indicates this in the first-order SCI. This design allows high-speed UEs to select a high-density DMRS pattern, thereby ensuring accurate channel estimation. For slow-moving UEs, a low-density DMRS pattern can be used, thereby improving spectral efficiency.

[0068] The generation method of the PSSCH DMRS sequence is almost identical to that of the PSCCH DMRS sequence. The main difference lies in the initialization formula of the pseudo-random sequence.

[0069] NR PDSCH and PUSCH support two frequency domain DMRS patterns, namely DMRS frequency domain type 1 and DMRS frequency domain type 2. Moreover, for each frequency domain type, there are two different types: single DMRS symbol and double DMRS symbol. Single-symbol DMRS frequency domain type 1 supports 4 DMRS ports, and single-symbol DMRS frequency domain type 2 can support 6 DMRS ports. In the case of double DMRS symbols, the number of supported ports is doubled. However, in NR-V2X, since PSSCH only needs to support two DMRS ports at most, only single-symbol DMRS frequency domain type 1 is supported. As shown in Figure 4, ports #0 and #1 can occupy the same two resource elements (REs), but with different masks.

[0070] Determination of NR-V2X frequency domain resources

[0071] Similar to LTE-V2X, the frequency domain resources in the NR-V2X resource pool are contiguous, and the frequency domain resource allocation granularity is also subchannel. A subchannel contains a number of PRBs {10, 12, 15, 20, 50, 75, 100}, with the smallest subchannel size being 10 PRBs, significantly larger than the minimum subchannel size of 4 PRBs in LTE-V2X. This is primarily because the frequency domain resources of the PSCCH in NR-V2X are located within the first subchannel of its associated PSSCH. The frequency domain resources of the PSCCH are less than or equal to the size of a single PSSCH subchannel, while the time domain resources of the PSCCH occupy two or three OFDM symbols. If the subchannel size is configured too small, the available PSCCH resources are limited, increasing the code rate and degrading PSCCH detection performance. In NR-V2X, the PSSCH subchannel size and the PSCCH frequency domain resource size are configured independently, but the PSCCH frequency domain resources must be less than or equal to the PSSCH subchannel size.

[0072] The following configuration parameters in the NR-V2X resource pool configuration information are used to determine the frequency domain resources of the PSCCH and PSSCH resource pools:

[0073] Subchannel size (sl-SubchannelSize): indicates the number of consecutive PRBs included in a subchannel in the resource pool, and the value range is {10, 12, 15, 20, 50, 75, 100} PRBs;

[0074] Number of subchannels (sl-NumSubchannel): indicates the number of subchannels included in the resource pool;

[0075] Subchannel start RB index (sl-StartRB-Subchannel): indicates the start PRB index of the first subchannel in the resource pool;

[0076] PRB number (sl-RB-Number): indicates the number of consecutive PRBs included in the resource pool;

[0077] PSCCH frequency domain resource indication (sl-FreqResourcePSCCH): indicates the frequency domain resource size of PSCCH, and the value range is {10, 12, 15, 20, 25} PRB.

[0078] When the UE determines the resource pool for PSSCH transmission or PSSCH reception, the frequency domain resources included in the resource pool are sl-NumSubchannel consecutive subchannels starting with the PRB indicated by sl-StartRB-Subchannel. If the number of PRBs included in the final sl-NumSubchannel consecutive subchannels is less than the number of PRBs indicated by sl-RB-Number, the remaining PRBs cannot be used for PSSCH transmission or reception.

[0079] In NR-V2X, the frequency domain starting positions of the first subchannel of the PSCCH and its associated PSSCH are aligned. Therefore, the starting position of each PSSCH subchannel is the frequency domain starting position of a possible PSCCH. Based on the above parameters, the frequency domain range of the PSCCH and PSSCH resource pools can be determined. Figure 5 shows an example of the PSCCH and PSSCH resource pools in NR-V2X.

[0080] In NR-V2X, the PSCCH is used to carry sidelink control information related to resource sensing and can include the following examples:

[0081] The priority of the scheduled transmission;

[0082] Frequency domain resource allocation, indicating the number of frequency domain resources of PSSCH in the current time slot scheduled by PSCCH, and the number and starting position of frequency domain resources of up to two retransmission resources reserved;

[0083] Time domain resource allocation, indicating the time domain locations of up to two retransmission resources;

[0084] Reference signal pattern for PSSCH;

[0085] Second-order Sidelink Control Information (SCI) format;

[0086] Second-order SCI rate offset;

[0087] Number of PSSCH DMRS ports;

[0088] Modulation and coding scheme (MCS);

[0089] MCS form instructions;

[0090] Number of PSFCH symbols;

[0091] Resource reservation period, reserves resources for sending another transport block (TB) in the next period. If inter-TB resource reservation is not activated in the resource pool configuration, this information bit field does not exist.

[0092] Reserved bits: 2 to 4 bits. The specific number of bits is configured or pre-configured by the network.

[0093] Since the PSCCH is always transmitted in the same time slot as the scheduled PSSCH, and the starting position of the PRB occupied by the PSCCH is the starting position of the first subchannel of the scheduled PSSCH, the SCI format 1-A does not explicitly indicate the time-frequency domain starting position of the scheduled PSSCH.

[0094] Determination of NR-V2X time domain resources (time slots)

[0095] In NR-V2X, the transmission of PSCCH / PSSCH is based on the time slot level. That is, only one PSCCH / PSSCH can be transmitted in a time slot, and the transmission of multiple PSCCH / PSSCH in a time slot through time division multiplexing (Time Division Multiplex and Multiplexer, TDM) is not supported. PSCCH / PSSCH between different users can be multiplexed in a time slot through frequency division multiplexing (FDM). The time domain resources of PSSCH in NR-V2X are based on the granularity of time slots, but this is different from the PSSCH in LTE-V2X that occupies all time domain symbols in a subframe. The PSSCH in NR-V2X can occupy part of the symbols in a time slot. This is mainly because in the LTE system, uplink or downlink transmission is based on the granularity of subframes, so the side transmission is also based on the granularity of subframes (the special subframes in the time division duplex (TDD) system are not used for side transmission). The NR system uses a flexible time slot structure, that is, a time slot includes both uplink and downlink symbols, which can achieve more flexible scheduling and reduce latency. A typical NR system subframe is shown in Figure 6. A time slot can include downlink (DL) symbols, uplink (UL) symbols, and flexible symbols. Downlink symbols are located at the beginning of the time slot, and uplink symbols are located at the end of the time slot. Between the downlink and uplink symbols are flexible symbols, and the number of various symbols in each time slot is configurable.

[0096] As mentioned above, the sidelink transmission system can share a carrier with the cellular system. In this case, sidelink transmission can only use the cellular system's uplink transmission resources. For NR-V2X, if sidelink transmission still needs to occupy all time-domain symbols in a timeslot, the network must configure a timeslot full of uplink symbols for sidelink transmission. This will significantly impact uplink and downlink data transmission in the NR system, reducing system performance. Therefore, NR-V2X supports the use of a portion of the time-domain symbols in a timeslot for sidelink transmission, that is, a portion of the uplink symbols in a timeslot are used for sidelink transmission. Furthermore, considering that sidelink transmission includes AGC and GP symbols, if the number of uplink symbols available for sidelink transmission is small, removing AGC and GP symbols will leave even fewer symbols available for transmitting valid data, resulting in low resource utilization. Therefore, in NR-V2X, the minimum number of time-domain symbols occupied by sidelink transmission is seven (including GP symbols). When the sidelink transmission system uses a dedicated carrier, there is no issue of sharing transmission resources with other systems, and all symbols in the timeslot can be configured for sidelink transmission.

[0097] In the NR-V2X system, the time domain resources of the resource pool are also indicated by a bitmap. Taking into account the flexible time slot structure in the NR system, the length of the bitmap has also been extended, and the supported bitmap length range is [10:160]. The method of using the bitmap to determine the time slot position belonging to the resource pool within a system frame number (SFN) period is the same as in LTE-V2X, but with the following differences:

[0098] The total number of time slots included in one SFN cycle is 10240×2 μ , where the parameter μ is related to the subcarrier spacing;

[0099] If at least one of the time-domain symbols Y, Y+1, Y+2, …, Y+X-1 included in a time slot is not configured as an uplink symbol by the network's TDD-UL-DL-ConfigCommon signaling, then the time slot cannot be used for sidelink transmission. Where Y and X represent sl-StartSymbol and sl-LengthSymbols, respectively.

[0100] The specific steps include:

[0101] Step 1: Remove the time slots that do not belong to the resource pool within the SFN cycle, including synchronization time slots and time slots that cannot be used for sideline transmission. The remaining time slots are represented as the remaining time slot set, and the remaining time slots are renumbered as

[0102] in:

[0103] N S_SSB Indicates the number of synchronization time slots in an SFN cycle; the synchronization time slot is determined according to the synchronization-related configuration parameters, and is related to the period of transmitting the synchronization signal and physical broadcast channel block (Synchronization Signaland PBCH block, SSB) and the number of SSB transmission resources configured in the period.

[0104] N nonSL Indicates the number of time slots in an SFN cycle that do not comply with the uplink symbol start point and number configuration: If at least one of the time domain symbols Y, Y+1, Y+2, …, Y+X-1 included in a time slot is not semi-statically configured as an uplink symbol, then the time slot cannot be used for sidelink transmission, where Y and X represent sl-StartSymbol and sl-LengthSymbols, respectively.

[0105] Step 2: Determine the number of reserved time slots and the corresponding time domain positions.

[0106] If the number of time slots in the remaining time slot set cannot be divided by the bitmap length, the number of reserved time slots and the corresponding time domain positions need to be determined. r (0≤r<10240×2 μ -N S_SSB -N nonSL ) satisfies the following conditions, then the time slot is a reserved time slot,

[0107]

[0108] in:

[0109] N reserved =(10240×2 μ -N S_SSB -N nonSL )mod L bitmap , represents the number of reserved time slots, L bitmap Indicates the length of the bitmap, m = 0, ..., N reserved -1.

[0110] Step 3: Remove the reserved time slots from the remaining time slot set. The remaining time slot set is represented as a logical time slot set. The time slots in the time slot set are all time slots that can be used in the resource pool. The time slots in the logical time slot set are renumbered as Among them, the maximum time slot number T max =10240×2 μ -N S_SSB -N nonSL -N reserved .

[0111] Step 4: Determine the time slots in the logical time slot set that belong to the resource pool according to the bitmap.

[0112] The bitmap in the resource pool configuration information is For a time slot in a logical time slot set When b is satisfied k′ =1, the time slot belongs to the resource pool, where k′=k mod L bitmap .

[0113] Step 5: Renumber the time slots belonging to the resource pool determined in step 4 in order i∈{0,1,…,T′ max -1}, where T′ max Indicates the number of time slots included in the resource pool.

[0114] As shown in Figure 7, an SFN cycle (or Direct Frame Number (DFN) cycle) consists of 10240 subframes. The synchronization signal period is 160ms, and one synchronization cycle includes two synchronization subframes. Therefore, there are 128 synchronization subframes in one SFN cycle. The length of the bitmap used to indicate the time domain resources of the resource pool is 10 bits, so two reserved subframes are required. The number of remaining subframes is (10240-128-2=10110), which is divisible by the length of the bitmap, 10. The remaining subframes are renumbered as 0, 1, 2, ..., 10109, with the first three bits of the bitmap being 1 and the remaining seven bits being 0. That is, among the remaining subframes, the first three subframes out of every ten subframes belong to the resource pool, and the remaining subframes do not belong to the resource pool. Since the bitmap needs to be repeated 1011 times in the remaining subframes to indicate whether all subframes belong to the resource pool, and each bitmap period includes 3 subframes, a total of 3033 subframes belong to the resource pool in one SFN period.

[0115] Mode 2 Resource Selection in NR V2X

[0116] Mode 2 resource selection is supported in NR-V2X, that is, the UE excludes resources reserved by other UEs based on the PSCCH sent by other UEs detected, and selects resources for data transmission from the remaining resources.

[0117] The second mode resource selection is performed in two steps:

[0118] Step 1: The UE takes all available resources in the resource selection window as resource set A.

[0119] If the UE sends data in some time slots within the listening window and does not listen, all resources on the corresponding time slots in the selection window for these time slots are excluded. The UE determines the corresponding time slots in the selection window using the value set of the "resource reservation period" field in the resource pool configuration used.

[0120] If the UE detects the PSCCH within the listening window, it measures the reference signal received power (RSRP) of the PSCCH or the RSRP of the PSSCH scheduled by the PSCCH. If the measured RSRP is greater than the sidelink reference signal received power (SL-RSRP) threshold, and the reserved resources are determined to be within the resource selection window based on the resource reservation information in the sidelink control information transmitted in the PSCCH, the corresponding resources are excluded from set A. If the remaining resources in resource set A are less than X% of all resources before resource set A is excluded, the SL-RSRP threshold is raised by 3dB and step 1 is executed again. The possible values ​​of X are {20, 35, 50}, and the UE determines the parameter X from the value set according to the priority of the data to be sent. At the same time, the SL-RSRP threshold is related to the priority carried in the PSCCH detected by the UE and the priority of the data to be sent by the UE. The UE uses the remaining resources in set A after resource exclusion as the candidate resource set.

[0121] Step 2: The UE randomly selects several resources from the candidate resource set as the transmission resources for its initial transmission and retransmission.

[0122] Sidelink-based positioning

[0123] In 3GPP Release 17, studies were conducted on "NR Positioning Enhancements" and "Scenarios and Requirements for NR Positioning Use Cases in In-Coverage, Partial Coverage, and Out-of-Coverage." The "Scenarios and Requirements for NR Positioning Use Cases in In-Coverage, Partial Coverage, and Out-of-Coverage" studies focused on V2X and public safety use cases. Furthermore, the standard established requirements for "Ranging-Based Services" and positioning accuracy requirements for IIoT use cases in out-of-coverage scenarios. 3GPP is required to research and develop sidelink positioning solutions to support the use cases, scenarios, and requirements identified in these activities. To improve positioning accuracy, particularly for UEs located outside of cellular network coverage, 3GPP proposed positioning based on sidelink Positioning Reference Signals in Release 18. Based on current conclusions, sidelink (SL) Positioning Reference Signals (PRS) can be transmitted within a dedicated resource pool. However, to support sidelink positioning and sidelink communication, UEs also need to send and receive information related to UE mutual discovery, configuration, and measurement reporting for sidelink positioning, as well as control and data information related to sidelink communication. This information needs to be carried through side channels, such as PSCCH and / or PSSCH.

[0124] Sidelink Over Unlicensed Spectrum (SL-U)

[0125] When performing sidelink transmission on unlicensed spectrum (SL-U), sidelink transmission needs to meet specific requirements. These include the minimum occupied channel bandwidth (OCB) and maximum power spectral density (PSD) requirements. For the OCB requirement, when the UE uses the channel for data transmission, the occupied channel bandwidth must not be less than 80% of the channel bandwidth. For the maximum power spectral density requirement, the power transmitted by the UE per 1MHz cannot exceed 10dBm. In order to meet the OCB and PSD requirements, sidelink transmission on unlicensed spectrum needs to adopt an interlaced resource block (IRB) structure. An IRB includes N resource blocks (RBs) that are discrete in the frequency domain. There are a total of M IRBs in the frequency band, and the RBs included in the mth IRB are {m, M+m, 2M+m, 3M+m, ...}.

[0126] As shown in FIG8 , the system bandwidth includes 20 RBs, including 5 IRBs (i.e., M=5), each IRB includes 4 RBs (i.e., N=4), and the frequency domain intervals of two adjacent RBs belonging to the same IRB are the same, i.e., 5 RBs apart. The numbers in the boxes in FIG8 represent the IRB indexes.

[0127] In the SL-U system, if IRB-based resource allocation granularity is adopted, channels such as the PSCCH and PSSCH in the SL-U system should all be based on the IRB structure. In this case, the frame structure of the SL-U system is shown in Figure 9, where the numbers within the boxes represent the IRB index. Figure 9 illustrates a frame structure where only the PSCCH and PSSCH are included in a time slot, excluding the PSFCH. The bandwidth shown in Figure 9 includes 20 RBs, with five IRB resources configured (i.e., M = 5). Each IRB resource consists of four RBs, and the numbers within the boxes represent the IRB index. In Figure 9, the system configures the PSCCH to occupy one IRB resource and two OFDM symbols in the time domain. The PSSCH uses IRB granularity, with the first symbol in the time slot being an AGC symbol and the last symbol being a GP symbol. In Figure 9, PSSCH1 occupies IRB#0 and IRB#1, with its corresponding PSCCH1 occupying IRB#0. PSSCH2 occupies IRB#2, with its corresponding PSCCH2 also occupying IRB#2. It should be noted that, for the sake of simplicity, FIG9 does not show the resources occupied by the second-order SCI and the resources occupied by the PSCCH DMRS and PSSCH DMRS.

[0128] UEs access channels in unlicensed spectrum using LBT. LBT uses a 20MHz granularity in the frequency domain, with each 20MHz interval being called an RB Set. A carrier can contain multiple RB Sets, separated by guard intervals (also known as guard bands), as shown in Figure 10.

[0129] In unlicensed spectrum, UEs must first perform LBT before they can access the channel. However, the time it takes for a UE to complete LBT is uncertain. If a UE is restricted to transmitting at the start of a timeslot, it may miss a transmission opportunity due to failure to complete LBT before that time. Therefore, SL-U considers adding a transmission starting point within a timeslot, i.e., multi-start transmission. For example, the additional starting point can be the third or fourth OFDM symbol within the timeslot.

[0130] FIG11 is a schematic flow chart of a sideline communication method 1100 according to an embodiment of the present application. The method includes at least part of the following contents.

[0131] S1110. The first terminal obtains a sending resource for sidewalk positioning related information based on a sending resource for the first sidewalk information. The sending resource for the sidewalk positioning related information includes one or more available sending starting points.

[0132] In an embodiment of the present application, a first terminal may perform sidelink communication with a second terminal. The first terminal may send first sidelink information to the second terminal. The first sidelink information may include a sidelink channel and / or a sidelink signal. The transmission resource of the first sidelink information may include a transmission starting point that the first terminal may use to transmit the first sidelink information, which may be referred to as an available transmission starting point for the first sidelink information. For example, the available transmission starting point may include two or more OFDM symbols within a time slot that can be used for sidelink transmission.

[0133] Before a first terminal sends first sidelink information to a second terminal on an unlicensed spectrum, it must perform LBT. After LBT succeeds, the first terminal then sends the first sidelink information to the second terminal. The available starting points for sending the first sidelink information can be used to determine the available starting points for sending sidelink positioning-related information.

[0134] In one embodiment, the sideline positioning related information includes a sideline positioning reference signal (SL PRS) and / or a channel for indicating the transmission of the SL PRS.

[0135] For example, the first terminal may determine an available transmission starting point of the SL PRS according to the available transmission starting point of the first sideline information. The first terminal may determine an available transmission starting point of a channel for indicating SL PRS transmission according to the available transmission starting point of the first sideline information.

[0136] In one embodiment, the first sidelink information includes a physical sidelink control channel (PSCCH) and / or a physical sidelink shared channel (PSSCH) carrying sidelink data.

[0137] For example, the first terminal can determine the available transmission starting point of SL PRS based on the available transmission starting point of PSCCH and / or PSSCH of SL-U. The first terminal can determine the available transmission starting point of the channel used to indicate SL PRS transmission based on the available transmission starting point of PSCCH and / or PSSCH of SL-U.

[0138] In one embodiment, in a shared resource pool of the sideways positioning related information and the first sideways information, an available sending starting point of the sideways positioning related information is the same as an available sending starting point of the first sideways information.

[0139] For example, the shared resource pool may be a resource pool shared by the SL PRS and the PSCCH and / or PSSCH of the SL-U. Within the shared resource pool, the SL PRS and the PSCCH and / or PSSCH may have the same available transmission starting point. If the PSCCH and / or PSSCH has multiple available transmission starting points S1, S2, and S3 within a time slot, the SL PRS has the same available transmission starting points S1, S2, and S3 within the time slot.

[0140] For another example, the shared resource pool may be a resource pool shared by the channel for indicating SL PRS transmission and the PSCCH and / or PSSCH of SL-U. If the PSCCH and / or the PSSCH has multiple available transmission starting points S1, S2, and S3 in a time slot, the channel for indicating SL PRS transmission has the same available transmission starting points S1, S2, and S3 in the time slot.

[0141] For another example, the shared resource pool may be a resource pool shared by the SL PRS, the channel used to indicate SL PRS transmission, and the PSCCH and / or PSSCH of the SL-U. Within the shared resource pool, the SL PRS, the channel used to indicate SL PRS transmission, and the PSCCH and / or PSSCH of the SL-U may include the same available transmission starting points S1, S2, and S3.

[0142] The number and numbers of available sending starting points in the embodiments of the present application are merely examples and not limitations, and can be flexibly selected according to specific needs in actual applications.

[0143] In one embodiment, a time slot of the shared resource pool includes a first transmission starting point and a second transmission starting point, wherein the first transmission starting point is the first OFDM symbol that can be used for side transmission in the time slot, and the second transmission starting point is the second OFDM symbol that can be used for side transmission after the first OFDM symbol.

[0144] In an embodiment of the present application, the shared resource pool may include multiple time slots. The transmission resources of the first side information in different time slots may be the same or different. If the transmission resources of the first side information in a time slot include a first transmission starting point and a second transmission starting point, the first transmission starting point and the second transmission starting point may also be SL PRS or an available transmission starting point of a channel for indicating SL PRS transmission. For example, the first transmission starting point is the first OFDM symbol that can be used for side transmission in a time slot, such as OFDM symbol #0, and the second transmission starting point is the second OFDM symbol after the first OFDM symbol in the time slot, such as OFDM symbol #3. The available transmission starting points of SL PRS may include OFDM symbol #0 and OFDM symbol #3. The available transmission starting points of the channel for indicating SL PRS transmission may include OFDM symbol #0 and OFDM symbol #3.

[0145] In one embodiment, as shown in FIG12 , based on any of the above method embodiments, the method 1200 further includes:

[0146] S1210: The first terminal starts sending sidewalk positioning related information from the first sending starting point or the second sending starting point according to the time of completing listen before talk (LBT).

[0147] For example, if the first terminal completes the LBT before the first transmission start point of a certain time slot, it may start transmitting the SL PRS or a channel for indicating SL PRS transmission at the first transmission start point.

[0148] For another example, if the first terminal completes LBT after the first sending start point and before the second sending start point of a certain time slot, it can start sending SL PRS or a channel used to indicate SL PRS sending at the second sending start point.

[0149] In one embodiment, whether multiple sending starting points are allowed in the shared resource pool and the position of the second sending starting point are determined according to configuration information of the shared resource pool, pre-configuration information of the shared resource pool, or standard definition.

[0150] In an embodiment of the present application, the first terminal may receive configuration information or pre-configuration information from a network device, and the configuration information or pre-configuration information may be used to indicate whether multiple transmission starting points are allowed in the shared resource pool, and the transmission resources of the first side information. For example, the configuration information or pre-configuration information may also be used to indicate the position of the first transmission starting point and / or the second transmission starting point. If the first transmission starting point is the first symbol of the time slot by default, the configuration information or pre-configuration information may only indicate the second transmission starting point. In addition, whether multiple transmission starting points are allowed in the shared resource pool, and the position of the first transmission starting point and / or the second transmission starting point, etc. may also be agreed upon through standard definitions or protocols, and the specific selection may be flexibly made according to needs.

[0151] In one embodiment, the sideline positioning related information and the first sideline information are frequency division multiplexed.

[0152] In an embodiment of the present application, if the sideline positioning related information and the first sideline information have the same available transmission starting point in a time slot, then at these available transmission starting points, the sideline positioning related information and the first sideline information can be frequency-division multiplexed. For example, the SL PRS, the channel used to indicate the transmission of the SL PRS, the PSCCH of the SL-U, and the PSSCH of the SL-U occupy different frequency domain resources, such as RBs, at the same available transmission starting point.

[0153] In one embodiment, the bandwidth occupied by the sidewalk positioning related information is smaller than the total bandwidth of the shared resource pool.

[0154] For example, the bandwidth occupied by the SL PRS is smaller than the total bandwidth of the shared resource pool. For another example, the bandwidth occupied by the channel used to indicate the transmission of the SL PRS is smaller than the total bandwidth of the shared resource pool.

[0155] In one embodiment, the bandwidth occupied by the sidewalk positioning related information includes one or more RB sets in the shared resource pool.

[0156] For example, the bandwidth occupied by the SL PRS includes RB set #1 and RB set #2 of the shared resource pool. For another example, the bandwidth occupied by the channel used to indicate SL PRS transmission includes RB set #3 of the shared resource pool.

[0157] In this embodiment of the present application, some time slots within the shared resource pool may contain a PSFCH, while others may not. Whether a time slot contains a PSFCH can be configured or pre-configured by the network. In this embodiment of the present application, time slots within the shared resource pool that do not contain a PSFCH are referred to as first time slots, and time slots within the shared resource pool that contain a PSFCH are referred to as second time slots. The following describes the available transmission starting points within these two time slots.

[0158] In one embodiment, in the first time slot where there is no physical sidelink feedback channel (PSFCH) in the shared resource pool of the sidelink positioning related information and the first sidelink information, the available sending starting point of the sidelink positioning related information includes the available sending starting point of the first sidelink information.

[0159] In one embodiment, the available sending starting points of the sideline positioning related information are more than the available sending starting points of the first sideline information.

[0160] For example, in the resource pool shared by the SL PRS and the PSCCH and / or PSSCH of the SL-U, the available transmission starting points of the SL PRS may include and be more than the available transmission starting points of the PSCCH and / or the PSSCH. If the PSCCH and / or the PSSCH has multiple available transmission starting points S1, S2 and S3 in a time slot, the SL PRS may include available transmission starting points S4, S5, etc. in addition to the available transmission starting points S1, S2 and S3 in the time slot.

[0161] For another example, in the resource pool shared by the channel for indicating SL PRS transmission and the PSCCH and / or PSSCH of SL-U, the available transmission starting points of the channel for indicating SL PRS transmission may include and be more than the available transmission starting points of the PSCCH and / or the PSSCH. If the PSCCH and / or the PSSCH has multiple available transmission starting points S1, S2 and S3 in a time slot, the channel for indicating SL PRS transmission may include available transmission starting points S4, S5, etc. in addition to the available transmission starting points S1, S2 and S3 in the time slot.

[0162] In one embodiment, the first time slot of the shared resource pool includes a third sending starting point and a fourth sending starting point, the third sending starting point is the first OFDM symbol that can be used for sideline transmission in the first time slot, the fourth sending starting point is the fourth OFDM symbol that can be used for sideline transmission after the third OFDM symbol, and the available sending starting points of the sideline positioning-related information include the third sending starting point, the fourth sending starting point and at least one fifth sending starting point, and the fifth sending starting point is the fifth OFDM symbol in the first time slot that can be used to send the sideline positioning-related information but cannot be used to send the first sideline information.

[0163] In an embodiment of the present application, if the transmission resources of the first sideline information in a certain time slot include a third transmission starting point and a fourth transmission starting point, the third transmission starting point and the fourth transmission starting point may also be the SL PRS or the available transmission starting point of the channel used to indicate the transmission of the SL PRS. In addition, the SL PRS or the available transmission starting point of the channel used to indicate the transmission of the SL PRS may also include other available transmission starting points different from the third transmission starting point and the fourth transmission starting point. For example, the third transmission starting point is the first OFDM symbol that can be used for sideline transmission in a time slot, such as OFDM symbol #0, and the fourth transmission starting point is the second OFDM symbol after the first OFDM symbol in the time slot, such as OFDM symbol #4. The SL PRS and / or the available transmission starting point of the channel used to indicate the transmission of the SL PRS may include OFDM symbol #0 and OFDM symbol #4. The SL PRS and / or the available transmission starting point of the channel used to indicate the transmission of the SL PRS may also include a fifth transmission starting point in addition to OFDM symbol #0 and OFDM symbol #4. The fifth transmission starting point may be after the fourth transmission starting point, such as OFDM symbol #5. The fifth transmission starting point may also be between the third transmission starting point and the fourth transmission starting point, for example, OFDM symbol #3.

[0164] In one implementation, based on any of the above method embodiments, as shown in FIG13 , the fifth sending starting point is after the fourth sending starting point, and the method 1300 further includes:

[0165] S1310: The first terminal detects a PSCCH at the third sending starting point and / or the fourth sending starting point of the first sidelink information;

[0166] S1320: When no PSCCH for indicating PSSCH transmission in the first time slot is detected at the third sending starting point and / or the fourth sending starting point of the first sideline information, the first terminal starts to send sideline positioning related information at the fifth sending starting point.

[0167] In an embodiment of the present application, if the first terminal does not detect the PSCCH before the third transmission starting point in the first time slot, the third transmission starting point in the first time slot or the available transmission starting point thereafter may send the SL PRS and / or the channel for indicating the transmission of the SL PRS. If the first terminal does not detect the PSCCH before the fourth transmission starting point in the first time slot, the fourth transmission starting point in the first time slot or the available transmission starting point thereafter may send the SL PRS and / or the channel for indicating the transmission of the SL PRS. If the first terminal does not detect the PSCCH before the fifth transmission starting point in the first time slot, the fifth transmission starting point in the first time slot may send the SL PRS and / or the channel for indicating the transmission of the SL PRS.

[0168] If the first terminal detects the PSCCH at the position of the third transmission starting point and / or the fourth transmission starting point within the first time slot, the SL PRS and / or the channel for indicating the transmission of the SL PRS may not be transmitted. In this way, the influence of the SL PRS and / or the channel for indicating the transmission of the SL PRS transmitted by the first terminal on the AGC of the terminal receiving the PSCCH and / or the PSSCH carrying sidelink data can be avoided.

[0169] In one embodiment, based on any of the above method embodiments, as shown in FIG14 , the fifth sending starting point is after the third sending starting point and before the fourth sending starting point, and the method 1400 further includes:

[0170] S1410: The first terminal detects a PSCCH at a position of an available transmission starting point of the first sidelink information before the fifth transmission starting point;

[0171] S1420: When no PSCCH for indicating PSSCH transmission in the first time slot is detected at the position of the available transmission starting point of the first sideline information, the first terminal starts to transmit sideline positioning related information at the fifth transmission starting point.

[0172] In an embodiment of the present application, the fifth transmission starting point is after the third transmission starting point and before the fourth transmission starting point. If the first terminal detects PSCCH at the third transmission starting point before the fifth transmission starting point, SL PRS and / or a channel for indicating SL PRS transmission is not transmitted at the fifth transmission starting point. If the first terminal does not detect PSCCH at the third transmission starting point, SL PRS and / or a channel for indicating SL PRS transmission may be transmitted at the fifth transmission starting point. Similarly, if PSCCH is not detected at the fifth transmission starting point, SL PRS and / or a channel for indicating SL PRS transmission may be transmitted at the fourth transmission starting point.

[0173] In one embodiment, when the first terminal transmits the line location-related information at the fifth transmission starting point, the bandwidth for transmitting the line location-related information by the first terminal is equal to the total bandwidth of the shared resource pool. In this case, the line location-related information at the fifth transmission starting point cannot be frequency-division multiplexed with other information.

[0174] In one embodiment, when the first terminal begins to transmit the sideline positioning-related information at the third transmission starting point or the fourth transmission starting point, the bandwidth for transmitting the sideline positioning-related information by the first terminal is less than the total bandwidth of the shared resource pool. In this case, the sideline positioning-related information and the first sideline information can be frequency-division multiplexed at the third transmission starting point and / or the fourth transmission starting point.

[0175] In one embodiment, the index n of the last starting symbol that can be used for sending side positioning related information in the first time slot is not greater than Np, where N is the index of the last OFDM symbol that can be used for side transmission in the first time slot, and p is the minimum number of OFDM symbols occupied by the transmission resources of a side positioning related information.

[0176] For example, if the index N of the last OFDM symbol that can be used for side transmission in the first time slot is 13, and the minimum number of OFDM symbols p occupied by the transmission resources of a side positioning related information is 3, then the index n of the last starting symbol that can be used for sending side positioning related information can be 8, 9 or 10, etc.

[0177] In one embodiment, the sidelink positioning related information is present in the second time slot of the PSFCH in the shared resource pool with the first sidelink information, and the available transmission starting point of the sidelink positioning related information includes at least one of the following:

[0178] a sixth transmission starting point, a first sixth OFDM symbol available for sidelink transmission in the second time slot;

[0179] A seventh transmission starting point, the first seventh OFDM symbol used for PSFCH transmission in the second time slot;

[0180] An eighth transmission starting point is an eighth OFDM symbol in the second time slot excluding the sixth OFDM symbol and / or the seventh OFDM symbol.

[0181] In the embodiment of the present application, the eighth transmission starting point may be after the seventh transmission starting point, or between the sixth transmission starting point and the seventh transmission starting point. For example, the sixth OFDM symbol in the second time slot is OFDM symbol #0, the seventh OFDM symbol is OFDM symbol #4, and the eighth OFDM symbol may be OFDM symbol #5 or OFDM symbol #2.

[0182] In one embodiment, the available sending starting point of the side positioning related information includes the sixth OFDM symbol in the second time slot, and an RB that can be used for sending side positioning related information is configured on the OFDM symbol used for PSFCH transmission, and the first terminal sends the side positioning related information from the seventh OFDM symbol.

[0183] For example, the sixth OFDM symbol is OFDM symbol #0, the OFDM symbol used for PSFCH transmission is OFDM symbol #2, and the seventh OFDM symbol is OFDM symbol #4. If OFDM symbol #2 is configured with RBs that can be used for SL PRS and / or a channel for indicating SL PRS transmission, the SL PRS and / or the channel for indicating SL PRS transmission can be sent starting from OFDM symbol #4.

[0184] In one embodiment, the eighth transmission starting point is included between the sixth OFDM symbol and the seventh OFDM symbol, and the eighth transmission starting point can be used to transmit sideline positioning-related information.

[0185] For example, the eighth OFDM symbol between the sixth OFDM symbol and the seventh OFDM symbol is OFDM symbol # 2. The SL PRS and / or a channel indicating the transmission of the SL PRS may be transmitted starting from OFDM symbol # 2.

[0186] In one embodiment, the index n of the last OFDM symbol that can be used to send sideline positioning-related information before the OFDM symbol used to send PSFCH is not greater than N-3-p+1, where N is the index of the last OFDM symbol that can be used for sideline transmission in the time slot, and p is the minimum number of OFDM symbols occupied by the transmission resources of one sideline positioning-related information.

[0187] For example, if the index N of the last OFDM symbol available for sideline transmission in the second time slot is 13, the minimum number of OFDM symbols p occupied by the transmission resources of a piece of sideline positioning-related information is 3, and N-3-p+1=8. The OFDM symbol used for PSFCH transmission is OFDM symbol #2, and the index n of the last OFDM symbol before OFDM symbol #2 that can be used for SL PRS and / or for the channel indicating the transmission of the SL PRS is 1. Therefore, n is not greater than N-3-p+1.

[0188] In one embodiment, the value of p is defined by network configuration, pre-configuration, or a standard.

[0189] In one embodiment, based on any of the above method embodiments, as shown in FIG15 , the method 1500 further includes:

[0190] S1510: If the first terminal does not detect the PSCCH for instructing PSSCH transmission at the sixth transmission starting point in the second time slot, the first terminal starts to transmit sideline positioning related information at the eighth transmission starting point.

[0191] In an embodiment of the present application, if the first terminal detects PSCCH at the sixth transmission starting point, i.e., the sixth OFDM symbol, in the second time slot, the SL PRS and / or the channel for indicating the transmission of the SL PRS are not transmitted at the available transmission starting points after the sixth transmission starting point. If the first terminal does not detect PSCCH at the sixth transmission starting point, the SL PRS and / or the channel for indicating the transmission of the SL PRS may be transmitted at the seventh transmission starting point or the eighth transmission starting point. Similarly, if the eighth transmission starting point is after the seventh transmission starting point and the PSCCH is not detected at the seventh transmission starting point, the SL PRS and / or the channel for indicating the transmission of the SL PRS may be transmitted at the eighth transmission starting point. If the eighth transmission starting point is between the sixth transmission starting point and the seventh transmission starting point and the PSCCH is not detected at the eighth transmission starting point, the SL PRS and / or the channel for indicating the transmission of the SL PRS may be transmitted at the seventh transmission starting point.

[0192] In one embodiment, the first terminal sends the sideline positioning related information at the eighth sending starting point, and the bandwidth for the first terminal to send the sideline positioning related information is the same as the bandwidth of the shared resource pool.

[0193] In the embodiment of the present application, the sideline positioning related information sent at the eighth sending starting point in the second time slot may not be frequency-division multiplexed with other information.

[0194] In one embodiment, the sideline communication method further includes: when there is overlap between the sending resources of the sideline positioning related information and the resources reserved by the second terminal, the first terminal excludes the sending resources of the sideline positioning related information.

[0195] For example, within the first time slot or the second time slot, if the first terminal detects that the available sending starting point of the sideline positioning related information overlaps with the resources reserved by the second terminal, for example, in the same symbol, the first terminal does not use these overlapping resources to send SL PRS and / or the channel for indicating SL PRS sending.

[0196] In this embodiment of the present application, by using the transmission resources of the first sideways information to obtain the transmission resources of the sideways positioning-related information, the transmission resources of the first sideways information can be used to increase the transmission opportunities of the sideways positioning-related information. For example, two or more available transmission starting points for the sideways positioning-related information can be provided within a time slot. This helps improve positioning reliability and accuracy.

[0197] FIG16 is a schematic flow chart of a sideline communication method 1600 according to another embodiment of the present application. The method includes at least part of the following contents.

[0198] S1610. The first terminal receives first information, wherein the first information is used to configure or pre-configure sending resources for sideline positioning related information within a SL bandwidth part (Bandwidth Part, BWP) or within a shared resource pool, and the sending resources for sideline positioning related information include one or more available sending starting points.

[0199] In an embodiment of the present application, the first terminal may receive first information from a network device, where the first information may be configured or pre-configured resources for sending positioning-related information within an SL BWP or a shared resource pool.

[0200] In one embodiment, the transmission resource of the sideline positioning related information includes an available transmission starting point of the sideline positioning related information. For example, the first information may configure or preconfigure one or more available transmission starting points of the SL PRS and / or the channel for indicating the transmission of the SL PRS within a time slot. The first terminal may start transmitting the SL PRS and / or the channel for indicating the transmission of the SL PRS at the configured or preconfigured available transmission starting point.

[0201] In one embodiment, the first information includes a first configuration and / or a first preconfiguration, the first configuration is used to configure a starting point for sending the side positioning related information, and the first preconfiguration is used to preconfigure a starting point for sending the side positioning related information.

[0202] In one embodiment, the first information includes a second configuration and / or a second preconfiguration, the second configuration is used to configure an available sending starting point of the first sideline information, and the second preconfiguration is used to preconfigure an available sending starting point of the first sideline information.

[0203] In an embodiment of the present application, the first terminal receives the second configuration and / or the second pre-configuration, and can adopt the method of the above embodiment to obtain the available sending starting point of the sideline positioning related information based on the available sending starting point of the first sideline information.

[0204] In one embodiment, the available starting point for transmitting the sideways positioning related information includes the available starting point for transmitting the first sideways information. For example, the available starting point for transmitting the sideways positioning related information is the same as the available starting point for transmitting the first sideways information, or the available starting point for transmitting the sideways positioning related information is greater than the available starting point for transmitting the first sideways information. See the relevant examples in the above embodiments, which will not be repeated here.

[0205] In one embodiment, the first sidelink information includes a PSCCH and / or a PSSCH carrying sidelink data.

[0206] In one embodiment, the sideline positioning related information includes SL PRS and / or a channel for indicating SL PRS transmission.

[0207] In one embodiment, the first information may also be used to configure or pre-configure whether multiple sending starting points are allowed in the shared resource pool.

[0208] The same terms in this embodiment as in the above method embodiment have the same meanings, and reference can be made to the relevant descriptions of the above embodiment.

[0209] FIG17 is a schematic flow chart of a sideline communication method 1700 according to another embodiment of the present application. The method includes at least part of the following contents.

[0210] S1710. The network device sends first information to the first terminal, wherein the first information is used to configure or pre-configure sideline positioning related information sending resources within the SL BWP or within the shared resource pool for the first terminal, and the sideline positioning related information sending resources include one or more available sending starting points.

[0211] In one embodiment, the sending resource of the sideways positioning related information includes an available sending starting point of the sideways positioning related information.

[0212] In one embodiment, the first information includes a first configuration and / or a first preconfiguration, the first configuration is used to configure a starting point for sending the side positioning related information, and the first preconfiguration is used to preconfigure a starting point for sending the side positioning related information.

[0213] In one embodiment, the first information includes a second configuration and / or a second preconfiguration, the second configuration is used to configure an available sending starting point of the first sideline information, and the second preconfiguration is used to preconfigure an available sending starting point of the first sideline information.

[0214] In one embodiment, the available sending starting point of the sideways positioning related information includes the available sending starting point of the first sideways information.

[0215] In one embodiment, the first sidelink information includes a PSCCH and / or a PSSCH carrying sidelink data.

[0216] In one embodiment, the sideline positioning related information includes SL PRS and / or a channel for indicating SL PRS transmission.

[0217] In one embodiment, the first information may also be used to configure or pre-configure whether multiple sending starting points are allowed in the shared resource pool.

[0218] For a specific example of the network device executing method 1400 of this embodiment, reference can be made to the relevant description of the network device in the above method embodiment, which will not be repeated here for the sake of brevity.

[0219] Example 1: In a shared resource pool, the available sending starting point of the SL PRS is the same as the available sending starting point of the SL-U communication.

[0220] In this example, the resource pool where the SL PRS is located can also be used for SL-U communication. That is, within the resource pool, there may be SL PRS sent by the UE and there may also be PSCCH and / or PSSCH carrying sideline data sent by other UEs. In this case, the available transmission starting point when a UE sends an SL PRS can be the same as the available transmission starting point of the PSCCH and / or PSSCH carrying sideline data. For example:

[0221] There are two transmission starting points within a time slot. The first starting point (sl-StartSymbol_1) is the first OFDM symbol available for SL in the time slot (for example, OFDM symbol #0), and the second starting point (sl-StartSymbol_2) is the OFDM symbol after the first OFDM symbol (for example, OFDM symbol #3). The UE can start transmitting the SL PRS from one of the two starting points based on the time when the LBT is completed, as shown in Figure 18. The symbol length corresponding to the first starting point (sl-LengthSymbol_1) is 14, and the symbol length corresponding to the second starting point (sl-LengthSymbol_1) is 11.

[0222] The UE may determine whether multiple sending starting points are allowed in the resource pool and the position of the second sending starting point according to the configuration information of the resource pool or the pre-configuration information of the resource pool, or the standard definition.

[0223] In this manner, when the SL PRS and the PSCCH and / or the PSSCH carrying sidelink data are frequency-division multiplexed, this manner can avoid the impact of the SL PRS on the PSCCH / PSSCH.

[0224] Preferably, in this manner, the bandwidth occupied by the SL PRS may be smaller than the total bandwidth of the resource pool, for example, it may occupy one or more RB sets in the resource pool.

[0225] Example 2: In a shared resource pool, for a time slot where PSFCH does not exist, the available transmission starting point of SL PRS includes and may be more than the available transmission starting point of PSCCH / PSSCH for SL-U communication.

[0226] In this example, the resource pool where the SL PRS is located is also used for SL-U communication, that is, within the resource pool, there may be SL PRS sent by the UE and there may also be PSCCH and PSSCH carrying sidelink data sent by other UEs. In this case, the available transmission starting points for a UE to send an SL PRS include, and may be more than, the available transmission starting points for PSCCH and / or PSSCH carrying sidelink data, and specifically one of the following methods can be used:

[0227] Method 1: In a time slot, PSCCH and / or PSSCH carrying sidelink data can use two transmission starting points, and SL PRS can use these two transmission starting points, but after these two available transmission starting points, there are one or more available transmission starting points for SL PRS.

[0228] For example, in Figure 18, the available starting points for the PSCCH and / or the PSSCH carrying sidelink data are OFDM symbol #0 and OFDM symbol #3, respectively. The UE can use these two transmission starting points when sending the SL PRS. After OFDM symbol #3, there may also be one or more starting points that can be used for SL PRS transmission.

[0229] In this method, in order to avoid the impact of the SL PRS sent by the UE on the AGC of the UE receiving the PSCCH and / or the PSSCH carrying sidelink data, any of the following processing methods can be used:

[0230] (1) The UE detects the PSCCH sent by other UEs at the two starting points. When there is no PSCCH sent by other UEs at these two starting points indicating the PSSCH transmission in the current time slot, the UE can start sending SL PRS at the starting point after the two starting points. Or,

[0231] (2) If the UE starts to send SL PRS at one of the two starting points, the bandwidth for the UE to send SL PRS can be less than the bandwidth of the resource pool. If the UE sends SL PRS at a starting point after the two starting points, the bandwidth for the UE to send SL PRS can be equal to the bandwidth of the resource pool. When the UE selects SL PRS transmission resources, if an SL PRS resource overlaps with resources reserved by other UEs, the UE should exclude this SL PRS resource.

[0232] In this method, when the SL PRS occupies all frequency domain resources in the resource pool, more starting points can provide more transmission opportunities for the SL PRS. Moreover, the first two starting points of the SL PRS are the same as the PSCCH and / or PSSCH carrying sidelink data, which can avoid the impact of the SL PRS on the PSCCH / PSSCH transmission.

[0233] Method 2: In a time slot, PSCCH and / or PSSCH carrying sidelink data can use two transmission starting points, and SL PRS can use these two transmission starting points. However, in addition to these two available transmission starting points, there are one or more available SL PRS transmission starting points, and these one or more SL PRS starting points can be located before or after the second transmission starting point that can be used by PSCCH / PSSCH.

[0234] For example, in Figure 18, the available starting points of PSCCH and / or PSSCH carrying sidelink data are OFDM symbol #0 and OFDM symbol #3, respectively. The UE can use these two sending starting points when sending SL PRS, but before and after OFDM symbol #3, there may also be one or more starting points that can be used for SL PRS transmission.

[0235] In this method, in order to avoid the impact of the SL PRS sent by the UE on the AGC of the UE receiving the PSCCH and / or the PSSCH carrying sidelink data, any of the following processing methods can be performed:

[0236] (1) The UE detects the PSCCH sent by other UEs at the first starting point or the second starting point. When there is no PSCCH sent by other UEs at the first starting point or the second starting point to indicate the PSSCH transmission in the current time slot, the UE may start to send SL PRS from the starting point after the first starting point or the second starting point. Or,

[0237] (2) If the UE starts sending SL PRS at the first or second starting point, the bandwidth for the UE to send SL PRS can be less than the bandwidth of the resource pool. If the UE starts sending SL PRS at other starting points, the bandwidth for the UE to send SL PRS can be equal to the bandwidth of the resource pool. When the UE selects SL PRS transmission resources, if an SL PRS resource overlaps with resources reserved by other UEs, the UE should exclude this SL PRS resource.

[0238] In this method, if there are other starting points that can be used for SL PRS transmission between the first starting point and the second starting point, the number and position of the other starting points can be configured or pre-configured by the network. If the UE starts to send SL PRS at any starting point between the first starting point and the second starting point, the priority of the UE to send SL PRS can be higher than a specific value, which is configured by the network, pre-configured or defined by the standard.

[0239] In this method, when the SL PRS occupies all frequency domain resources in the resource pool, more starting points can provide more transmission opportunities for the SL PRS. Moreover, the first two starting points of the SL PRS are the same as the PSCCH and / or PSSCH carrying sidelink data, which can avoid the impact of the SL PRS on the PSCCH / PSSCH transmission.

[0240] The UE can determine whether there is a second starting point in the resource pool that can be used for PSCCH and / or PSSCH carrying sidelink data based on the configuration information of the resource pool or the pre-configuration information of the resource pool, or the standard definition. The UE can determine whether there are other starting points in the resource pool that can be used for SL PRS transmission in addition to the two starting points based on the configuration information of the source pool or the pre-configuration information of the resource pool.

[0241] In this example, the last starting symbol n that can be used for SL PRS transmission should not be greater than Np. N is the index of the last OFDM symbol that can be used for PSSCH transmission in the time slot, and p is the minimum number of OFDM symbols occupied by an SL PRS resource. The value of p can be defined by network configuration, pre-configuration, or standards.

[0242] Example 3: In a shared resource pool, for a time slot with PSFCH, the available transmission starting points of SL PRS include the first OFDM symbol available for sideline transmission in the time slot, may include the first OFDM symbol used for PSFCH transmission, and may also include other OFDM symbols in the time slot.

[0243] For example, for a time slot with PSFCH, PSCCH and / or PSSCH carrying sidelink data can only be sent starting from the first OFDM symbol available for sidelink transmission in the time slot, and there is no second starting point. In this example, the available transmission starting point of SL PRS can be determined in the following way:

[0244] Method 1: The available transmission starting point of SL PRS includes the first symbol available for sideline transmission in the time slot. If RBs available for SL PRS transmission are configured on the OFDM symbol used for PSFCH transmission, SL PRS can be transmitted from the first OFDM symbol used for PSFCH transmission.

[0245] This method can prevent the presence of other starting points for SL PRS transmission within the transmission time range of PSCCH and / or PSSCH carrying sidelink data, thereby minimizing the impact of SL PRS on PSCCH / PSSCH reception.

[0246] Method 2: The starting point for SL PRS transmission includes the first symbol in the time slot that can be used for sidelink transmission. If RBs that can be used for SL PRS transmission are configured on the OFDM symbol used for PSFCH transmission, SL PRS can be transmitted from the first OFDM symbol used for PSFCH transmission. In addition, there can be other starting points that can be used for SL PRS transmission between the first starting point and the first OFDM symbol used for PSFCH.

[0247] The last starting symbol n that can be used for SL PRS transmission before the OFDM symbol used for PSFCH transmission should not be greater than N-3-p+1. N is the index of the last OFDM symbol that can be used for PSSCH transmission in the time slot, and p is the minimum number of OFDM symbols occupied by an SL PRS resource. The value of p can be defined by network configuration, pre-configuration, or standards.

[0248] The UE detects the PSCCH in the first OFDM symbol available for sideline transmission in the time slot. If no PSCCH transmitted by other terminals is detected, the UE may start transmitting the SL PRS from other starting points.

[0249] If the UE sends the SL PRS at other starting points that can be used for SL PRS transmission, the bandwidth used by the UE to send the SL PRS should be the same as the bandwidth of the resource pool.

[0250] Example 4: Within the SL BWP, or within the resource pool, the starting point available for SL PRS transmission is configured or pre-configured by the network.

[0251] In this example, the starting point for sending the SL PRS is configured or pre-configured by the network. The configuration or pre-configuration can be for the entire BWP where the SL PRS is located, or for the resource pool where the SL PRS is located.

[0252] It is assumed that there is a first configuration / preconfiguration and a second configuration / preconfiguration for the SL BWP or resource pool, wherein the first configuration / preconfiguration is specifically used to indicate a starting point that can be used for SL PRS transmission, and the second configuration / preconfiguration is specifically used to indicate a starting point that can be used for transmission of PSCCH and / or PSSCH carrying sidelink data. Within the SL BWP or the resource pool, the starting point that can be used for SL PRS transmission includes the transmission starting point indicated by the first configuration / preconfiguration and the second configuration / preconfiguration.

[0253] The sideline communication method of an embodiment of the present application is a method for sending SL PRS on an unlicensed spectrum. In one example, in a shared resource pool, the available transmission starting point of SL PRS is the same as that of SL-U communication. In another example, for a time slot where PSFCH does not exist, the available transmission starting point of SL PRS includes and may be more than the available transmission starting point of PSCCH / PSSCH of SL-U communication. In another example, in a shared resource pool, for a time slot where PSFCH exists, the available transmission starting point of SL PRS includes the first OFDM symbol in the time slot that can be used for sideline transmission, may include the first OFDM symbol for PSFCH transmission, and may also include other OFDM symbols in the time slot. In another example, within the SL BWP or within the resource pool, the starting point that can be used for SL PRS transmission is configured or pre-configured by the network. Through the method proposed in the present application, the transmission opportunities of SL PRS on the unlicensed spectrum can be increased, and the positioning reliability and positioning accuracy can be improved.

[0254] FIG19 is a schematic block diagram of a first terminal 1900 according to an embodiment of the present application. The first terminal 1900 may include:

[0255] The processing unit 1910 is configured to obtain a sending resource for sidewalk positioning related information according to a sending resource for the first sidewalk information, where the sending resource for the sidewalk positioning related information includes one or more available sending starting points.

[0256] In one embodiment, the sideline positioning related information includes a sideline positioning reference signal SL PRS and / or a channel used to indicate the transmission of the SL PRS.

[0257] In one embodiment, the first sidelink information includes a physical sidelink control channel PSCCH and / or a physical sidelink shared channel PSSCH carrying sidelink data.

[0258] In one embodiment, in a shared resource pool of the sideways positioning related information and the first sideways information, an available sending starting point of the sideways positioning related information is the same as an available sending starting point of the first sideways information.

[0259] In one embodiment, a time slot of the shared resource pool includes a first transmission starting point and a second transmission starting point, wherein the first transmission starting point is the first OFDM symbol that can be used for side transmission in the time slot, and the second transmission starting point is the second OFDM symbol that can be used for side transmission after the first OFDM symbol.

[0260] In one embodiment, as shown in FIG20 , based on any of the above first terminal embodiments, the first terminal 2000 further includes:

[0261] The first sending unit 2010 is configured to start sending the sidewalk positioning related information from the first sending starting point or the second sending starting point according to the time of completing the listen-before-talk (LBT).

[0262] In one embodiment, whether multiple sending starting points are allowed in the shared resource pool and the position of the second sending starting point are determined according to configuration information of the shared resource pool, pre-configuration information of the shared resource pool, or standard definition.

[0263] In one embodiment, the sideline positioning related information and the first sideline information are frequency division multiplexed.

[0264] In one embodiment, the bandwidth occupied by the sidewalk positioning related information is smaller than the total bandwidth of the shared resource pool.

[0265] In one embodiment, the bandwidth occupied by the sidewalk positioning related information includes one or more RB sets in the shared resource pool.

[0266] In one embodiment, in the first time slot where a physical sideline feedback channel PSFCH does not exist in the shared resource pool of the sideline positioning related information and the first sideline information, the available sending starting point of the sideline positioning related information includes the available sending starting point of the first sideline information.

[0267] In one embodiment, the available sending starting points of the sideline positioning related information are more than the available sending starting points of the first sideline information.

[0268] In one embodiment, the first time slot of the shared resource pool includes a third sending starting point and a fourth sending starting point, the third sending starting point is the first OFDM symbol that can be used for sideline transmission in the first time slot, the fourth sending starting point is the fourth OFDM symbol that can be used for sideline transmission after the third OFDM symbol, and the available sending starting points of the sideline positioning-related information include the third sending starting point, the fourth sending starting point and at least one fifth sending starting point, and the fifth sending starting point is the fifth OFDM symbol in the first time slot that can be used to send the sideline positioning-related information but cannot be used to send the first sideline information.

[0269] In one embodiment, the fifth transmission starting point is after the fourth transmission starting point, and the processing unit 1910 is further configured to detect the PSCCH at the third transmission starting point and / or the fourth transmission starting point of the first sidelink information.

[0270] As shown in Figure 20, the first terminal 2000 also includes: a second sending unit 2020, which is used to start sending sideline positioning related information at the fifth sending starting point when the PSCCH for indicating the PSSCH transmission in the first time slot is not detected at the third sending starting point and / or the fourth sending starting point of the first sideline information.

[0271] In one embodiment, the fifth transmission starting point is after the third transmission starting point and before the fourth transmission starting point, and the processing unit 1910 is further configured to detect the PSCCH at a position of an available transmission starting point of the first sidelink information before the fifth transmission starting point.

[0272] As shown in Figure 20, the first terminal 2000 also includes: a third sending unit 2030, which is used to start sending sideline positioning related information at the fifth sending starting point when the PSCCH for indicating the PSSCH transmission in the first time slot is not detected at the position of the available sending starting point of the first sideline information.

[0273] In one embodiment, when the first terminal sends the sideline positioning related information at the fifth sending starting point, the bandwidth for the first terminal to send the sideline positioning related information is equal to the total bandwidth of the shared resource pool.

[0274] In one embodiment, when the first terminal starts to send the sidewalk positioning related information at the third sending starting point or the fourth sending starting point, the bandwidth for the first terminal to send the sidewalk positioning related information is less than the total bandwidth of the shared resource pool.

[0275] In one embodiment, the index n of the last starting symbol that can be used for sending side positioning related information in the first time slot is not greater than Np, where N is the index of the last OFDM symbol that can be used for side transmission in the first time slot, and p is the minimum number of OFDM symbols occupied by the transmission resources of a side positioning related information.

[0276] In one embodiment, the sidelink positioning related information is present in the second time slot of the PSFCH in the shared resource pool with the first sidelink information, and the available transmission starting point of the sidelink positioning related information includes at least one of the following:

[0277] a sixth transmission starting point, a first sixth OFDM symbol available for sidelink transmission in the second time slot;

[0278] A seventh transmission starting point, the first seventh OFDM symbol used for PSFCH transmission in the second time slot;

[0279] An eighth transmission starting point is an eighth OFDM symbol in the second time slot excluding the sixth OFDM symbol and / or the seventh OFDM symbol.

[0280] In one embodiment, the available sending starting point of the side positioning related information includes the sixth OFDM symbol in the second time slot, and an RB that can be used for sending side positioning related information is configured on the OFDM symbol used for PSFCH transmission, and the first terminal sends the side positioning related information from the seventh OFDM symbol.

[0281] In one embodiment, the eighth transmission starting point is included between the sixth OFDM symbol and the seventh OFDM symbol, and the eighth transmission starting point can be used to transmit sideline positioning-related information.

[0282] In one embodiment, the index n of the last OFDM symbol that can be used to send sideline positioning-related information before the OFDM symbol used to send PSFCH is not greater than N-3-p+1, where N is the index of the last OFDM symbol that can be used for sideline transmission in the time slot, and p is the minimum number of OFDM symbols occupied by the transmission resources of one sideline positioning-related information.

[0283] In one embodiment, the value of p is defined by network configuration, pre-configuration or standard.

[0284] In one embodiment, as shown in FIG20 , the first terminal 2000 further includes:

[0285] The fourth sending unit 2040 is configured to, if the sixth sending starting point does not detect the PSCCH for instructing PSSCH transmission within the second time slot, start the first terminal to send the sideline positioning related information at the eighth sending starting point.

[0286] In one embodiment, the first terminal sends the sideline positioning related information at the eighth sending starting point, and the bandwidth for the first terminal to send the sideline positioning related information is the same as the bandwidth of the shared resource pool.

[0287] In one embodiment, the processing unit 1910 is further configured to, when there is overlap between the sending resources of the sidetrack positioning related information and the resources reserved by the second terminal, cause the first terminal to exclude the sending resources of the sidetrack positioning related information.

[0288] The first terminal 1900, 2000 of the embodiment of the present application can implement the corresponding functions of the first terminal in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to each module (sub-module, unit or component, etc.) in the first terminal 1900, 2000 can be found in the corresponding description in the above method embodiment, which will not be repeated here. It should be noted that the functions described in the various modules (sub-module, unit or component, etc.) in the first terminal 1900, 2000 of the embodiment of the application can be implemented by different modules (sub-module, unit or component, etc.) or by the same module (sub-module, unit or component, etc.).

[0289] FIG21 is a schematic block diagram of a first terminal 2100 according to an embodiment of the present application. The first terminal 2100 may include:

[0290] The receiving unit 2110 is used to receive first information, wherein the first information is used to configure or pre-configure the sending resources of the sideline positioning related information within the SL bandwidth part BWP or in the shared resource pool, and the sending resources of the sideline positioning related information include one or more available sending starting points.

[0291] In one embodiment, the sending resource of the sideways positioning related information includes an available sending starting point of the sideways positioning related information.

[0292] In one embodiment, the first information includes a first configuration and / or a first preconfiguration, the first configuration is used to configure a starting point for sending the side positioning related information, and the first preconfiguration is used to preconfigure a starting point for sending the side positioning related information.

[0293] In one embodiment, the first information includes a second configuration and / or a second preconfiguration, the second configuration is used to configure an available sending starting point of the first sideline information, and the second preconfiguration is used to preconfigure an available sending starting point of the first sideline information.

[0294] In one embodiment, the available sending starting point of the sideways positioning related information includes the available sending starting point of the first sideways information.

[0295] In one embodiment, the first sidelink information includes a PSCCH and / or a PSSCH carrying sidelink data.

[0296] In one embodiment, the sideline positioning related information includes SL PRS and / or a channel for indicating SL PRS transmission.

[0297] The first terminal 2100 in the embodiment of the present application can implement the corresponding functions of the first terminal in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to the various modules (sub-modules, units or components, etc.) in the first terminal 2100 can be found in the corresponding descriptions in the above-mentioned method embodiments, and will not be repeated here. It should be noted that the functions described in the various modules (sub-modules, units or components, etc.) in the first terminal 2100 of the application embodiment can be implemented by different modules (sub-modules, units or components, etc.) or by the same module (sub-module, unit or component, etc.).

[0298] FIG22 is a schematic block diagram of a network device 2200 according to an embodiment of the present application. The network device 2200 may include:

[0299] The sending unit 2210 is used to send first information to the first terminal, wherein the first information is used to configure or pre-configure the sending resources of the side positioning related information within the SL BWP or within the shared resource pool for the first terminal, and the sending resources of the side positioning related information include one or more available sending starting points.

[0300] In one embodiment, the sending resource of the sideways positioning related information includes an available sending starting point of the sideways positioning related information.

[0301] In one embodiment, the first information includes a first configuration and / or a first preconfiguration, the first configuration is used to configure a starting point for sending the side positioning related information, and the first preconfiguration is used to preconfigure a starting point for sending the side positioning related information.

[0302] In one embodiment, the first information includes a second configuration and / or a second preconfiguration, the second configuration is used to configure an available sending starting point of the first sideline information, and the second preconfiguration is used to preconfigure an available sending starting point of the first sideline information.

[0303] In one embodiment, the available sending starting point of the sideways positioning related information includes the available sending starting point of the first sideways information.

[0304] In one embodiment, the first sidelink information includes a PSCCH and / or a PSSCH carrying sidelink data.

[0305] In one embodiment, the sideline positioning related information includes SL PRS and / or a channel for indicating SL PRS transmission.

[0306] The network device 2200 of the embodiment of the present application can implement the corresponding functions of the network device in the aforementioned method embodiment. The corresponding processes, functions, implementation methods and beneficial effects of each module (sub-module, unit or component, etc.) in the network device 2200 can be found in the corresponding description in the above method embodiment, and will not be repeated here. It should be noted that the functions described in the various modules (sub-module, unit or component, etc.) in the network device 2200 of the embodiment of the application can be implemented by different modules (sub-module, unit or component, etc.) or by the same module (sub-module, unit or component, etc.).

[0307] Figure 23 is a schematic structural diagram of a communication device 2300 according to an embodiment of the present application. The communication device 2300 includes a processor 2310, which can call and run a computer program from a memory to enable the communication device 2300 to implement the method in the embodiment of the present application.

[0308] In one embodiment, the communication device 2300 may further include a memory 2320. The processor 2310 may call and execute a computer program from the memory 2320 to enable the communication device 2300 to implement the method in the embodiment of the present application.

[0309] The memory 2320 may be a separate device independent of the processor 2310 or may be integrated into the processor 2310 .

[0310] In one embodiment, the communication device 2300 may further include a transceiver 2330 , and the processor 2310 may control the transceiver 2330 to communicate with other devices. Specifically, the transceiver 2330 may send information or data to other devices, or receive information or data sent by other devices.

[0311] The transceiver 2330 may include a transmitter and a receiver. The transceiver 2330 may further include an antenna, and the number of antennas may be one or more.

[0312] In one embodiment, the communication device 2300 may be a network device of an embodiment of the present application, and the communication device 2300 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0313] In one embodiment, the communication device 2300 may be a terminal device of an embodiment of the present application, such as a first terminal, and the communication device 2300 may implement the corresponding processes implemented by a terminal device, such as a first terminal, in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0314] 24 is a schematic structural diagram of a chip 2400 according to an embodiment of the present application. The chip 2400 includes a processor 2410, which can call and execute a computer program from a memory to implement the method according to the embodiment of the present application.

[0315] In one embodiment, the chip 2400 may further include a memory 2420. The processor 2410 may call and execute a computer program from the memory 2420 to implement the method executed by the terminal device or the network device in the embodiment of the present application.

[0316] The memory 2420 may be a separate device independent of the processor 2410 , or may be integrated into the processor 2410 .

[0317] In one embodiment, the chip 2400 may further include an input interface 2430. The processor 2410 may control the input interface 2430 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0318] In one embodiment, the chip 2400 may further include an output interface 2440. The processor 2410 may control the output interface 2440 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0319] In one embodiment, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0320] In one embodiment, the chip can be applied to a terminal device in the embodiments of the present application, such as a first terminal, and the chip can implement the corresponding processes implemented by the terminal device, such as the first terminal, in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0321] The chips used in the network device and the terminal device may be the same chip or different chips.

[0322] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0323] The processor mentioned above may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. The general-purpose processor mentioned above may be a microprocessor or any conventional processor, etc.

[0324] The memory mentioned above may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM).

[0325] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0326] FIG25 is a schematic block diagram of a communication system 2500 according to an embodiment of the present application. The communication system 2500 includes a terminal device 2510 and a network device 2520.

[0327] The terminal device 2510 is used to obtain the sending resources of the sideline positioning related information based on the sending resources of the first sideline information.

[0328] In one embodiment, the network device 2520 is used to configure or pre-configure whether multiple sending starting points are allowed in the shared resource pool, and the sending resources of the first sidelink information.

[0329] In one embodiment, the network device 2520 is configured to send first information, where the first information is used to configure or pre-configure resources for sending location-related information within the SL BWP or within the shared resource pool. The terminal device 2510 is configured to receive the first information.

[0330] The terminal device 2510 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 2520 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not described here in detail.

[0331] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function in accordance with the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode to another website, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0332] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0333] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0334] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A sideline communication method, comprising: The first terminal obtains the sending resources of the sidewalk positioning related information according to the sending resources of the first sidewalk information, where the sending resources of the sidewalk positioning related information include one or more available sending starting points.

2. The method according to claim 1, wherein The sideline positioning related information includes a sideline positioning reference signal SL PRS and / or a channel used to indicate the sending of the SL PRS.

3. The method according to claim 1 or 2, wherein The first sidelink information includes a physical sidelink control channel PSCCH and / or a physical sidelink shared channel PSSCH carrying sidelink data.

4. The method according to any one of claims 1 to 3, wherein In a shared resource pool of the sidewalk positioning related information and the first sidewalk information, an available sending starting point of the sidewalk positioning related information is the same as an available sending starting point of the first sidewalk information.

5. The method according to claim 4, wherein A time slot in the shared resource pool includes a first transmission starting point and a second transmission starting point. The first transmission starting point is the first OFDM symbol that can be used for side transmission in the time slot, and the second transmission starting point is the second OFDM symbol that can be used for side transmission after the first OFDM symbol.

6. The method according to claim 5, wherein: The method further comprises: The first terminal starts sending the sidewalk positioning related information from the first sending starting point or the second sending starting point according to the time when the listen-before-talk (LBT) is completed.

7. The method according to claim 5 or 6, wherein: Whether multiple sending starting points are allowed in the shared resource pool and the position of the second sending starting point are determined according to the configuration information of the shared resource pool, the pre-configuration information of the shared resource pool or a standard definition.

8. The method according to any one of claims 2 to 7, wherein The sideline positioning related information and the first sideline information are frequency division multiplexed.

9. The method according to any one of claims 2 to 8, wherein The bandwidth occupied by the sidewalk positioning related information is smaller than the total bandwidth of the shared resource pool.

10. The method according to claim 9, wherein: The bandwidth occupied by the sidetrack positioning related information includes one or more RB sets in the shared resource pool.

11. The method according to any one of claims 1 to 3, wherein In the first time slot in which there is no physical sideline feedback channel PSFCH in the shared resource pool of the sideline positioning related information and the first sideline information, the available sending starting point of the sideline positioning related information includes the available sending starting point of the first sideline information.

12. The method according to claim 11, wherein The available sending starting points of the sideline positioning related information are more than the available sending starting points of the first sideline information.

13. The method according to claim 11 or 12, wherein: The first time slot of the shared resource pool includes a third sending starting point and a fourth sending starting point, the third sending starting point is the first OFDM symbol that can be used for sideline transmission in the first time slot, the fourth sending starting point is the fourth OFDM symbol that can be used for sideline transmission after the third OFDM symbol, the available sending starting points of the sideline positioning related information include the third sending starting point, the fourth sending starting point and at least one fifth sending starting point, the fifth sending starting point is the fifth OFDM symbol in the first time slot that can be used to send the sideline positioning related information but cannot be used to send the first sideline information.

14. The method according to any one of claims 11 to 13, wherein The fifth sending starting point is after the fourth sending starting point, and the method further includes: The first terminal detects the PSCCH at the third sending starting point and / or the fourth sending starting point of the first sidelink information; When no PSCCH for indicating PSSCH transmission in the first time slot is detected at the third sending starting point and / or the fourth sending starting point of the first sideline information, the first terminal starts to send sideline positioning related information at the fifth sending starting point.

15. The method according to any one of claims 11 to 13, wherein The fifth sending starting point is after the third sending starting point and before the fourth sending starting point, and the method further includes: The first terminal detects a PSCCH at a position of an available transmission starting point of the first sideline information before the fifth transmission starting point; In a case where a PSCCH for indicating PSSCH transmission in the first time slot is not detected at the position of an available transmission starting point of the first sideline information, the first terminal starts to transmit sideline positioning related information at the fifth transmission starting point.

16. The method according to claim 14 or 15, wherein: In a case where the first terminal sends the sideline positioning related information at the fifth sending starting point, a bandwidth for sending the sideline positioning related information by the first terminal is equal to a total bandwidth of the shared resource pool.

17. The method according to any one of claims 11 to 13, wherein When the first terminal starts to send the sidewalk positioning related information at the third sending starting point or the fourth sending starting point, the bandwidth for sending the sidewalk positioning related information by the first terminal is less than the total bandwidth of the shared resource pool.

18. The method according to any one of claims 11 to 17, wherein The index n of the last starting symbol that can be used to send side positioning related information in the first time slot is not greater than Np, where N is the index of the last OFDM symbol that can be used for side transmission in the first time slot, and p is the minimum number of OFDM symbols occupied by the transmission resources of a side positioning related information.

19. The method according to any one of claims 1 to 3, wherein The sideline positioning related information is present in a second time slot of a PSFCH in a shared resource pool with the first sideline information, and an available sending starting point of the sideline positioning related information includes at least one of the following: a sixth transmission starting point, a first sixth OFDM symbol available for sidelink transmission in the second time slot; a seventh transmission starting point, the first seventh OFDM symbol used for PSFCH transmission in the second time slot; An eighth sending starting point is an eighth OFDM symbol in the second time slot except the sixth OFDM symbol and / or the seventh OFDM symbol.

20. The method according to claim 19, wherein The available starting point for sending the side positioning related information includes the sixth OFDM symbol in the second time slot, and an RB that can be used for sending side positioning related information is configured on the OFDM symbol used for PSFCH transmission, and the first terminal sends the side positioning related information from the seventh OFDM symbol.

21. The method according to claim 19 or 20, wherein The eighth transmission starting point is included between the sixth OFDM symbol and the seventh OFDM symbol, and the eighth transmission starting point can be used for transmitting sideline positioning-related information.

22. The method according to claim 21, wherein The index n of the last OFDM symbol that can be used to send sideline positioning-related information before the OFDM symbol used to send PSFCH is not greater than N-3-p+1, where N is the index of the last OFDM symbol that can be used for sideline transmission in the time slot, and p is the minimum number of OFDM symbols occupied by the transmission resources of a sideline positioning-related information.

23. The method according to claim 18 or 22, wherein the value of p is defined by network configuration, pre-configuration or standard.

24. The method according to claim 21 or 22, wherein The method further comprises: When the first terminal does not detect the PSCCH for instructing PSSCH transmission at the sixth transmission starting point in the second time slot, the first terminal starts to transmit the sideline positioning related information at the eighth transmission starting point.

25. The method according to claim 24, wherein The first terminal sends the sideline positioning related information at the eighth sending starting point, and the bandwidth of the first terminal sending the sideline positioning related information is the same as the bandwidth of the shared resource pool.

26. The method according to any one of claims 1 to 25, wherein The method further comprises: In a case where the sending resources of the sidetrack positioning related information overlap with the resources reserved by the second terminal, the first terminal excludes the sending resources of the sidetrack positioning related information.

27. A sideline communication method, comprising: The first terminal receives first information, wherein the first information is used to configure or pre-configure the sending resources of the sideline positioning related information within the SL bandwidth part BWP or in the shared resource pool, and the sending resources of the sideline positioning related information include one or more available sending starting points.

28. The method according to claim 27, wherein The sending resource of the sideways positioning related information includes an available sending starting point of the sideways positioning related information.

29. The method according to claim 27 or 28, wherein The first information includes a first configuration and / or a first preconfiguration, the first configuration is used to configure an available starting point for sending the sideways positioning related information, and the first preconfiguration is used to preconfigure an available starting point for sending the sideways positioning related information.

30. The method according to any one of claims 27 to 29, wherein The first information includes a second configuration and / or a second preconfiguration, the second configuration is used to configure an available sending starting point of the first sideline information, and the second preconfiguration is used to preconfigure an available sending starting point of the first sideline information.

31. The method according to claim 30, wherein The available sending starting point of the sideline positioning related information includes the available sending starting point of the first sideline information.

32. The method according to claim 30 or 31, wherein The first sidelink information includes a PSCCH and / or a PSSCH carrying sidelink data.

33. The method according to any one of claims 27 to 32, wherein The sideline positioning related information includes SL PRS and / or a channel used to indicate the sending of SL PRS.

34. A sideline communication method, comprising: The network device sends first information to the first terminal, wherein the first information is used to configure or pre-configure the sending resources of the sideline positioning related information within the SLBWP or within the shared resource pool for the first terminal, and the sending resources of the sideline positioning related information include one or more available sending starting points.

35. The method according to claim 34, wherein The sending resource of the sideways positioning related information includes an available sending starting point of the sideways positioning related information.

36. The method according to claim 34 or 35, wherein The first information includes a first configuration and / or a first preconfiguration, the first configuration is used to configure an available starting point for sending the sideways positioning related information, and the first preconfiguration is used to preconfigure an available starting point for sending the sideways positioning related information.

37. The method according to any one of claims 34 to 36, wherein The first information includes a second configuration and / or a second preconfiguration, the second configuration is used to configure an available sending starting point of the first sideline information, and the second preconfiguration is used to preconfigure an available sending starting point of the first sideline information.

38. The method of claim 37, wherein: The available sending starting point of the sideline positioning related information includes an available sending starting point of the first sideline information.

39. The method according to claim 37 or 38, wherein The first sidelink information includes a PSCCH and / or a PSSCH carrying sidelink data.

40. The method according to any one of claims 34 to 39, wherein The sideline positioning related information includes SL PRS and / or a channel used to indicate the sending of SL PRS.

41. A first terminal, comprising: The processing unit is configured to obtain the sending resources of the sidewalk positioning related information according to the sending resources of the first sidewalk information, where the sending resources of the sidewalk positioning related information include one or more available sending starting points.

42. The first terminal according to claim 41, wherein: The sideline positioning related information includes a sideline positioning reference signal SL PRS and / or a channel used to indicate the sending of the SL PRS.

43. The first terminal according to claim 41 or 42, wherein: The first sidelink information includes a physical sidelink control channel PSCCH and / or a physical sidelink shared channel PSSCH carrying sidelink data.

44. The first terminal according to any one of claims 41 to 43, wherein: In a shared resource pool of the sidewalk positioning related information and the first sidewalk information, an available sending starting point of the sidewalk positioning related information is the same as an available sending starting point of the first sidewalk information.

45. The first terminal according to claim 44, wherein: A time slot in the shared resource pool includes a first transmission starting point and a second transmission starting point. The first transmission starting point is the first OFDM symbol that can be used for side transmission in the time slot, and the second transmission starting point is the second OFDM symbol that can be used for side transmission after the first OFDM symbol.

46. ​​The first terminal according to claim 45, wherein: The first terminal further includes: The first sending unit is used to send the sidewalk positioning related information from the first sending starting point or the second sending starting point according to the time of completing the listen-before-talk (LBT) process.

47. The first terminal according to claim 45 or 46, wherein: Whether multiple sending starting points are allowed in the shared resource pool and the position of the second sending starting point are determined according to the configuration information of the shared resource pool, the pre-configuration information of the shared resource pool or a standard definition.

48. The first terminal according to any one of claims 42 to 47, wherein: The sideline positioning related information and the first sideline information are frequency division multiplexed.

49. The first terminal according to any one of claims 42 to 48, wherein: The bandwidth occupied by the sidewalk positioning related information is smaller than the total bandwidth of the shared resource pool.

50. The first terminal according to claim 49, wherein The bandwidth occupied by the sidetrack positioning related information includes one or more RB sets in the shared resource pool.

51. The first terminal according to any one of claims 41 to 43, wherein: In the first time slot in which there is no physical sideline feedback channel PSFCH in the shared resource pool of the sideline positioning related information and the first sideline information, the available sending starting point of the sideline positioning related information includes the available sending starting point of the first sideline information.

52. The first terminal according to claim 51, wherein: The available sending starting points of the sideline positioning related information are more than the available sending starting points of the first sideline information.

53. The first terminal according to claim 51 or 52, wherein: The first time slot of the shared resource pool includes a third sending starting point and a fourth sending starting point, the third sending starting point is the first OFDM symbol that can be used for sideline transmission in the first time slot, the fourth sending starting point is the fourth OFDM symbol that can be used for sideline transmission after the third OFDM symbol, the available sending starting points of the sideline positioning related information include the third sending starting point, the fourth sending starting point and at least one fifth sending starting point, the fifth sending starting point is the fifth OFDM symbol in the first time slot that can be used to send the sideline positioning related information but cannot be used to send the first sideline information.

54. The first terminal according to any one of claims 51 to 53, wherein: The fifth sending starting point is after the fourth sending starting point, and the processing unit is further configured to detect a PSCCH at the third sending starting point and / or the fourth sending starting point of the first sidelink information; The first terminal also includes: a second sending unit, which is used to start sending sideline positioning related information from the fifth sending starting point when the PSCCH for indicating the PSSCH transmission in the first time slot is not detected at the third sending starting point and / or the fourth sending starting point of the first sideline information.

55. The first terminal according to any one of claims 51 to 53, wherein: The fifth transmission starting point is after the third transmission starting point and before the fourth transmission starting point, and the processing unit is further configured to detect a PSCCH at a position of an available transmission starting point of the first sidelink information before the fifth transmission starting point; The first terminal also includes: a third sending unit, which is used to start sending sideline positioning related information from the fifth sending starting point when the PSCCH for indicating the PSSCH sending in the first time slot is not detected at the position of the available sending starting point of the first sideline information.

56. The first terminal according to claim 54 or 55, wherein: In a case where the first terminal sends the sideline positioning related information at the fifth sending starting point, a bandwidth for sending the sideline positioning related information by the first terminal is equal to a total bandwidth of the shared resource pool.

57. The first terminal according to any one of claims 51 to 53, wherein: When the first terminal starts to send the sidewalk positioning related information at the third sending starting point or the fourth sending starting point, the bandwidth for sending the sidewalk positioning related information by the first terminal is less than the total bandwidth of the shared resource pool.

58. The first terminal according to any one of claims 51 to 57, wherein: The index n of the last starting symbol that can be used to send side positioning related information in the first time slot is not greater than Np, where N is the index of the last OFDM symbol that can be used for side transmission in the first time slot, and p is the minimum number of OFDM symbols occupied by the transmission resources of a side positioning related information.

59. The first terminal according to any one of claims 41 to 43, wherein: The sideline positioning related information is present in a second time slot of a PSFCH in a shared resource pool with the first sideline information, and an available sending starting point of the sideline positioning related information includes at least one of the following: a sixth transmission starting point, a first sixth OFDM symbol available for sidelink transmission in the second time slot; a seventh transmission starting point, the first seventh OFDM symbol used for PSFCH transmission in the second time slot; An eighth sending starting point is an eighth OFDM symbol in the second time slot except the sixth OFDM symbol and / or the seventh OFDM symbol.

60. The first terminal according to claim 59, wherein The available starting point for sending the side positioning related information includes the sixth OFDM symbol in the second time slot, and an RB that can be used for sending side positioning related information is configured on the OFDM symbol used for PSFCH transmission, and the first terminal sends the side positioning related information from the seventh OFDM symbol.

61. The first terminal according to claim 59 or 60, wherein: The eighth transmission starting point is included between the sixth OFDM symbol and the seventh OFDM symbol, and the eighth transmission starting point can be used for transmitting sideline positioning-related information.

62. The first terminal according to claim 61, wherein: The index n of the last OFDM symbol that can be used to send sideline positioning-related information before the OFDM symbol used to send PSFCH is not greater than N-3-p+1, where N is the index of the last OFDM symbol that can be used for sideline transmission in the time slot, and p is the minimum number of OFDM symbols occupied by the transmission resources of a sideline positioning-related information.

63. The first terminal according to claim 58 or 62, wherein the value of p is defined by network configuration, pre-configuration or standard.

64. The first terminal according to claim 61 or 62, wherein: The first terminal further includes: The fourth sending unit is configured to: when the sixth sending starting point does not detect the PSCCH for instructing the sending of the PSSCH in the second time slot, the first terminal starts sending the sideline positioning related information at the eighth sending starting point.

65. The first terminal according to claim 64, wherein: The first terminal sends the sideline positioning related information at the eighth sending starting point, and the bandwidth of the first terminal sending the sideline positioning related information is the same as the bandwidth of the shared resource pool.

66. The first terminal according to any one of claims 41 to 65, wherein: The processing unit is further configured to, when there is overlap between the sending resources of the sidetrack positioning related information and the resources reserved by the second terminal, cause the first terminal to exclude the sending resources of the sidetrack positioning related information.

67. A first terminal, comprising: A receiving unit is used to receive first information, wherein the first information is used to configure or pre-configure the sending resources of the sideline positioning related information within the SL bandwidth part BWP or in the shared resource pool, and the sending resources of the sideline positioning related information include one or more available sending starting points.

68. The first terminal according to claim 67, wherein: The sending resource of the sideways positioning related information includes an available sending starting point of the sideways positioning related information.

69. The first terminal according to claim 67 or 68, wherein: The first information includes a first configuration and / or a first preconfiguration, the first configuration is used to configure an available starting point for sending the sideways positioning related information, and the first preconfiguration is used to preconfigure an available starting point for sending the sideways positioning related information.

70. The first terminal according to any one of claims 67 to 69, wherein: The first information includes a second configuration and / or a second preconfiguration, the second configuration is used to configure an available sending starting point of the first sideline information, and the second preconfiguration is used to preconfigure an available sending starting point of the first sideline information.

71. The first terminal according to claim 70, wherein: The available sending starting point of the sideline positioning related information includes an available sending starting point of the first sideline information.

72. The first terminal according to claim 70 or 71, wherein: The first sidelink information includes a PSCCH and / or a PSSCH carrying sidelink data.

73. The first terminal according to any one of claims 67 to 72, wherein: The sideline positioning related information includes SL PRS and / or a channel used to indicate the sending of SL PRS.

74. A network device comprising: A sending unit is used to send first information to a first terminal, wherein the first information is used to configure or pre-configure sending resources for sideline positioning related information within an SL BWP or within a shared resource pool for the first terminal, and the sending resources for sideline positioning related information include one or more available sending starting points.

75. The network device according to claim 74, wherein The sending resource of the sideways positioning related information includes an available sending starting point of the sideways positioning related information.

76. The network device according to claim 74 or 75, wherein: The first information includes a first configuration and / or a first preconfiguration, the first configuration is used to configure an available starting point for sending the sideways positioning related information, and the first preconfiguration is used to preconfigure an available starting point for sending the sideways positioning related information.

77. The network device according to any one of claims 74 to 76, wherein: The first information includes a second configuration and / or a second preconfiguration, the second configuration is used to configure an available sending starting point of the first sideline information, and the second preconfiguration is used to preconfigure an available sending starting point of the first sideline information.

78. The network device according to claim 77, wherein The available sending starting point of the sideline positioning related information includes an available sending starting point of the first sideline information.

79. The network device according to claim 77 or 78, wherein: The first sidelink information includes a PSCCH and / or a PSSCH carrying sidelink data.

80. The network device according to any one of claims 74 to 79, wherein: The sideline positioning related information includes SL PRS and / or a channel used to indicate the sending of SL PRS.

81. A terminal device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory so that the terminal device executes the method according to any one of claims 1 to 26 or claims 27 to 33.

82. A network device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory so as to enable the network device to perform the method according to any one of claims 34 to 40.

83. A chip comprising: A processor, configured to call and execute a computer program from a memory, so that a device equipped with the chip executes a method according to any one of claims 1 to 26, claims 27 to 33, or claims 34 to 40.

84. A computer-readable storage medium for storing a computer program, which, when executed by a device, causes the device to perform the method of any one of claims 1 to 26, claims 27 to 33, or claims 34 to 40.

85. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 26, claims 27 to 33 or claims 34 to 40.

86. A computer program causing a computer to perform the method of any one of claims 1 to 26, claims 27 to 33 or claims 34 to 40.

87. A communication system comprising: A terminal device, configured to perform the method according to any one of claims 1 to 26 or claims 27 to 33; A network device, configured to execute the method according to any one of claims 34 to 40.

Images