Resource determination method and device, network side equipment and terminal equipment

Abstract

The invention discloses a resource determination method and device, network side equipment and terminal equipment, and belongs to the technical field of communication, and the resource determination method comprises the steps that a first terminal determines resource indication information according to first information or received downlink control information; wherein the resource indication information is used for determining a transmission resource of a target side-link reference signal and / or a resource of a physical side-link control channel (PSCCH) associated with the target side-link reference signal from pre-configured candidate resources.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a resource determination method, device, network side equipment and terminal equipment. Background Art

[0002] In SL positioning, because the sidelink reference signal supports time division multiplexing (TDM) within the slot and comb-based multiplexing in the frequency domain, the existing control information cannot indicate the transmission resources of the sidelink reference signal, and it is necessary to design the indication information for the transmission of the sidelink reference signal. And how the transmission resources of the control information, such as the resources of the physical sidelink control channel (PSCCH), form an association relationship with the sidelink reference signal also requires the design of indication information for the transmission of the sidelink reference signal. Summary of the invention

[0003] The embodiments of the present application provide a resource determination method, apparatus, network-side equipment, and terminal equipment, which define the transmission resources of a sidelink reference signal and indication information of the resources of a PSCCH associated with the sidelink reference signal.

[0004] In a first aspect, a resource determination method is provided, comprising:

[0005] The first terminal determines resource indication information according to the first information or the received downlink control information;

[0006] The resource indication information is used to determine, from pre-configured candidate resources, a transmission resource of a target sidelink reference signal and / or a resource of a physical sidelink control channel PSCCH associated with the target sidelink reference signal.

[0007] In a second aspect, another resource determination method is provided, comprising:

[0008] The second terminal sends first sidelink control information to the first terminal, where the first sidelink control information is used to request a transmission resource of a target sidelink reference signal; or,

[0009] The second terminal sends second sidelink control information to the first terminal, where the second sidelink control information is used to schedule the target sidelink reference signal or positioning information associated with the target sidelink reference signal;

[0010] The second sidelink control information carries resource indication information, and the resource indication information is used to determine the transmission resources of the target sidelink reference signal and / or the resources of the physical sidelink control channel PSCCH associated with the target sidelink reference signal from pre-configured candidate resources.

[0011] In a third aspect, another resource determination method is provided, comprising:

[0012] When the third terminal receives the target sidelink reference signal and the sidelink control information associated with the target sidelink reference signal sent by the first terminal in the same time slot, the physical layer of the third terminal sends the target resource indication information to the higher layer;

[0013] The third terminal sends a first sidelink reference signal according to the target resource indication information;

[0014] The target resource indication information includes at least one of the following:

[0015] A source address identifier associated with the target sidelink reference signal;

[0016] a destination address identifier associated with the target sidelink reference signal;

[0017] A sidelink reference signal request message associated with the target sidelink reference signal;

[0018] a propagation type of the target sidelink reference signal;

[0019] priority information of the target sidelink reference signal;

[0020] bandwidth information of the target sidelink reference signal;

[0021] The resource pool information of the target sidelink reference signal.

[0022] In a fourth aspect, another resource determination method is provided, including:

[0023] The network side device sends downlink control information to the first terminal, where the downlink control information carries resource indication information;

[0024] The resource indication information is used to determine, from pre-configured candidate resources, a transmission resource of a target sidelink reference signal and / or a resource of a physical sidelink control channel PSCCH associated with the target sidelink reference signal.

[0025] In a fifth aspect, a resource determination device is provided, which is applied to a first terminal, and the device includes:

[0026] A resource indication information determining module, configured to determine resource indication information according to the first information or the received downlink control information;

[0027] The resource indication information is used to determine, from pre-configured candidate resources, a transmission resource of a target sidelink reference signal and / or a resource of a physical sidelink control channel PSCCH associated with the target sidelink reference signal.

[0028] In a sixth aspect, another resource determination device is provided, which is applied to a second terminal, and the device includes:

[0029] A first sending module is configured to send first sidelink control information to a first terminal, where the first sidelink control information is used to request a transmission resource of a target sidelink reference signal; or

[0030] A second sending module, configured to send second sidelink control information to the first terminal, where the second sidelink control information is used to schedule the target sidelink reference signal or positioning information associated with the target sidelink reference signal;

[0031] The second sidelink control information carries resource indication information, and the resource indication information is used to determine the transmission resources of the target sidelink reference signal and / or the resources of the physical sidelink control channel PSCCH associated with the target sidelink reference signal from pre-configured candidate resources.

[0032] In a seventh aspect, another resource determination device is provided, which is applied to a third terminal, and the device includes:

[0033] a resource indication information sending module, configured to send target resource indication information to a higher layer by the physical layer of the third terminal when a target sidelink reference signal and sidelink control information associated with the target sidelink reference signal sent by the first terminal are received in the same time slot;

[0034] A sidelink reference signal sending module, configured to send a first sidelink reference signal according to the target resource indication information;

[0035] The target resource indication information includes at least one of the following:

[0036] A source address identifier associated with the target sidelink reference signal;

[0037] a destination address identifier associated with the target sidelink reference signal;

[0038] A sidelink reference signal request message associated with the target sidelink reference signal;

[0039] a propagation type of the target sidelink reference signal;

[0040] priority information of the target sidelink reference signal;

[0041] bandwidth information of the target sidelink reference signal;

[0042] The resource pool information of the target sidelink reference signal.

[0043] In an eighth aspect, another resource determination device is provided, which is applied to a network side device, and the device includes:

[0044] A downlink control information sending module, configured to send downlink control information to the first terminal, wherein the downlink control information carries resource indication information;

[0045] The resource indication information is used to determine, from pre-configured candidate resources, a transmission resource of a target sidelink reference signal and / or a resource of a physical sidelink control channel PSCCH associated with the target sidelink reference signal.

[0046] In the ninth aspect, a terminal device is provided, which includes a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented, or the steps of the method described in the third aspect are implemented.

[0047] In the tenth aspect, a network side device is provided, comprising a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the steps of the method described in the fourth aspect are implemented.

[0048] In the eleventh aspect, a resource determination system is provided, comprising: a network side device and a terminal device, wherein the network side device can be used to execute the steps of the resource determination method as described in the fourth aspect above, and the terminal device can be used to execute the steps of the resource determination method as described in the first aspect above.

[0049] In the twelfth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented, or the steps of the method described in the third aspect are implemented, or the steps of the method described in the fourth aspect are implemented.

[0050] In the thirteenth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instructions to implement the method as described in the first aspect, or the method as described in the second aspect, or the method as described in the third aspect, or the method as described in the fourth aspect.

[0051] In the fourteenth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement the steps of the method described in the first aspect, the second aspect, the third aspect, or the fourth aspect.

[0052] The transmission method provided in the embodiment of the present application defines the transmission resource of the sidelink reference signal and the indication information of the PSCCH resource associated with the sidelink reference signal. In the embodiment of the present application, the first terminal can determine the resource indication information based on the first information or the received downlink control information, and the resource indication information is used to determine the transmission resource of the target sidelink reference signal and / or the PSCCH resource associated with the target sidelink reference signal from the preconfigured candidate resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0054] Figure 2 is a transmission schematic diagram in an embodiment of the present application;

[0055] Figure 3 is a flow chart of a resource determination method in an embodiment of the present application;

[0056] Figure 4 is another transmission schematic diagram in an embodiment of the present application;

[0057] Figure 5 is a schematic diagram of a resource structure in an embodiment of the present application;

[0058] Figure 6 is another schematic diagram of resource structure in an embodiment of the present application;

[0059] Figure 7 It is another schematic diagram of a resource structure in an embodiment of the present application;

[0060] Figure 8 is a flowchart of another resource determination method in an embodiment of the present application;

[0061] Fig. 9 is a flowchart of another resource determination method in an embodiment of the present application;

[0062] Fig.10 is a flowchart of another resource determination method in an embodiment of the present application;

[0063] Fig.11 is a structural block diagram of a resource determination device in an embodiment of the present application;

[0064] Fig.12 is a structural block diagram of another resource determination device in an embodiment of the present application;

[0065] Fig.13 is a structural block diagram of another resource determination device in an embodiment of the present application;

[0066] Fig.14 is a structural block diagram of another resource determination device in an embodiment of the present application;

[0067] Fig.15 is a structural block diagram of a communication device in an embodiment of the present application;

[0068] Fig.16 is a structural block diagram of a terminal device in an embodiment of the present application;

[0069] Fig.17 It is a structural block diagram of a network side device in an embodiment of the present application. DETAILED DESCRIPTION

[0070] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0071] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally represents that the objects associated with each other are in an "or" relationship.

[0072] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following descriptions, but these technologies can also be applied to applications other than NR system applications, such as the 6th generation (6 th Generation, 6G) communication system.

[0073] Figure 1A block diagram of a wireless communication system applicable to the embodiments of the present application is shown. The wireless communication system includes a terminal device 11 and a network side device 12. Among them, the terminal device 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), augmented reality (augmented reality, AR) / virtual reality (virtual reality, VR) equipment, a robot, a wearable device (Wearable Device), a vehicle-mounted equipment (VUE), a pedestrian terminal (PUE), a smart home (home equipment with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (personal computer, PC), a teller machine or a self-service machine and other terminal side devices, and the wearable device includes: a smart watch, a smart bracelet, a smart headset, a smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), a smart wristband, a smart clothing, etc. It should be noted that the specific type of the terminal device 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (RAN), a radio access network function or a radio access network unit. The access network device 12 may include a base station, a WLAN access point or a WiFi node, etc. The base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home B node, a home evolved B node, a transmitting and receiving point (TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary, it should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), user plane function (UserPlane Function, UPF), policy control function (Policy Control Function, PCF), policy and charging rules function unit (Policy and Charging Rules Function, PCRF), edge application service discovery function (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data storage (Unified Data Repository, UDR), home user server (Home Subscriber Server, HSS), centralized network configuration (CNC), network storage function (Network Repository Function, NRF), network exposure function (Network Exposure Function, NEF), local NEF (Local NEF, or L-NEF), binding support function (Binding Support Function, BSF), Application Function (AF), etc. It should be noted that in the embodiment of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0074] First, the relevant concepts involved in the embodiments of the present application are introduced:

[0075] The NR system supports sidelink (SL) transmission, which is used for direct data transmission between terminal equipment (UE) without going through network equipment. Figure 2 , shows a transmission schematic diagram. Figure 2As shown, data can be transmitted between the terminal device and the network side device through uplink and / or downlink; data can be transmitted directly on the physical layer between the terminal devices through the side link. The 5GNR system supports side link transmission modes such as unicast, multicast or groupcast.

[0076] The sidelink in the NR system includes the following channels:

[0077] Physical sidelink control channel (PSCCH), physical sidelink shared channel (PSSCH), physical sidelink broadcast channel (PSBCH), physical sidelink feedback channel (PSFCH).

[0078] NR vehicle to everything (V2X) defines two resource allocation modes: one is that the network side equipment (such as base station) schedules resources (mode 1), and the other is that the UE decides what resources to use for transmission (mode 2). For the resource allocation mode selected by the terminal itself, the terminal can select available transmission resources from the candidate resource information, which may come from the broadcast message or pre-configuration of the base station.

[0079] If the UE works within the service range of the network side device and has an RRC connection with the network side device, the UE can use mode 1 and / or mode 2; if the UE works within the service range of the network side device but has no RRC connection with the base station, only mode 2 can be used. If the UE is outside the service range of the network side device, it can only work in mode 2 and perform V2X transmission according to the pre-configured information.

[0080] In mode 1, the network side device can schedule / activate / release the UE's SL resources based on the downlink control information (DCI); in mode 2, the UE selects resources and indicates the resources selected by the UE through the sidelink control information (SCI). The resource granularity selected by the UE is a time slot in the time domain and a subchannel in the frequency domain.

[0081] In R17SL, a two-level SCI design is defined. The first-level SCI (that is, SCI format 1-A) is carried in the PSCCH channel, and the content carried may include at least one of the following: priority, frequency domain resource allocation, time domain resource allocation, resource reservation period, demodulation reference signal (DMRS) style, second-level SCI format, beta offset value indication, number of DMRS ports, modulation and coding scheme (MCS), MCS table indication, PSFCH overhead indication, reservation, and conflict information reception flag.

[0082] The second level SCI (i.e. SCI format 2-A, SCI format 2-B, SCI format 2-C) is carried in the PSSCH. The format of the second level SCI is indicated by the first SCI. The second level SCI starts in the symbol of the first DMRS carried in the PSSCH and is mapped in the order of increasing symbols of the PSSCH.

[0083] SCI format 2-A is used for decoding of PSSCH. The feedback information considered includes ACK and NACK scenarios, or NACK-only feedback scenarios, or no feedback scenarios. The content carried by SCI format 2-A includes at least one of the following: HARQ process number, new data indicator, redundancy version, source ID, destination ID, HARQ feedback enabled / disabled indicator, cast type indicator, and channel state information (CSI) request.

[0084] SCI format 2-B is used for decoding of PSSCH, considering the scenario of feedback information only NACK, or the scenario of no feedback information. The content carried by SCI format 2-B includes at least one of the following: HARQ process number, New data indicator, redundancy version, Source ID, Destination ID, HARQ feedback enabled / disabled indicator, zone ID, and communication range requirement.

[0085] SCI format 2-C is used for decoding of PSSCH and carries coordination information between UEs or requests for coordination information between UEs. The content carried by SCI format 2-C includes at least one of the following: HARQ process number, Newdata indicator, redundancy version, Source ID, Destination ID, HARQ feedback enabled / disabled indicator, CSI request, Providing / Requesting indicator. When "Providing / Requesting indicator" is 0, the content carried by SCI format 2-C also includes resource combinations, first resource location, reference slot location, resource set type, and lowest subchannel indices; when "Providing / Requesting indicator" is 1, the content carried by SCI format 2-C also includes priority, number of subchannels, resource reservation period, resource selection window location, resource set type, and padding bit.

[0086] The first-level SCI is carried in the PSCCH, and the second-level SCI is carried in the PSSCH.

[0087] R18 introduces SL PRS signal in positioning for SL positioning. In SL positioning, Scheme 1 supports SL-PRS resource allocation based on network scheduling, and Scheme 2 supports SL-PRS resource allocation based on UE autonomous selection. Dynamic scheduling and configured grant type 1 / type 2 resource allocation are supported in Scheme 1, where DCI can be used for resource scheduling / activation / release. UE autonomously selected resource allocation includes sensing based resource selection and random resource selection. Among them, SCI can be used for resource scheduling.

[0088] In addition, the SL PRS signal can be located in a dedicated resource pool or a shared resource pool. If the transmission resources of the SL PRS are located in the dedicated resource pool, only the PSCCH and SL PRS signals exist in the SL PRS dedicated resource pool. A single-stage SCI is used in the dedicated resource pool, and the single-stage SCI is carried in the PSCCH. The single-stage SCI is used to schedule the SL-PRS. If the transmission resources of the SL PRS are located in the shared resource pool, it is necessary to consider backward compatibility with the SL service, that is, to transmit information in the same resource pool as R16 / R17 and reduce the impact on the transmission performance of the R16 / R17 UE. The shared resource pool includes information transmission of PSCCH+PSSCH+SL-PRS. Two-stage SCI scheduling information is used in the shared resource pool. The first-level (1st) SCI is carried on the PSCCH, and the second-level (2nd) SCI is carried on the PSSCH.

[0089] In SL positioning, SL-PRS supports time division multiplexing (TDM) within the slot at the symbol level, and frequency division multiplexing (FDM) within the resource block (RB) / subchannel at the resource element (RE) level, or comb based multiplexing.

[0090] In SL, reference signals can be used for beam training. SL CSI-RS can be used to define beams. Currently, SL CSI-RS has not been defined.

[0091] The resource determination method provided in the embodiment of the present application is described in detail below through some embodiments and their application scenarios in combination with the accompanying drawings.

[0092] In a first aspect, an embodiment of the present application provides a resource determination method. Figure 3 , shows a flow chart of a resource determination method provided by an embodiment of the present application. The method is applied to a first terminal, such as Figure 3 As shown, the method may specifically include:

[0093] Step 101: The first terminal determines resource indication information according to first information or received downlink control information.

[0094] The resource indication information is used to determine, from pre-configured candidate resources, a transmission resource of a target sidelink reference signal and / or a resource of a physical sidelink control channel PSCCH associated with the target sidelink reference signal.

[0095] It should be noted that the first information may be the sidelink control information received by the first terminal, and the sidelink control information is used to schedule the target sidelink reference signal or the positioning information corresponding to the target sidelink reference signal; the first information may also be the channel busy information specified by the protocol or pre-configured by the high-level layer and the transmission parameters of the sidelink reference signal associated with the channel busy information, and the first information may also be the configured or pre-configured resource mapping relationship indication information, which is used to indicate the resource mapping relationship between the PSCCH resource and the sidelink reference signal. The resource mapping relationship includes one-to-one or one-to-many.

[0096] Optionally, the PSCCH resource includes at least one of the following:

[0097] The time-frequency position of the PSCCH;

[0098] The code division resources of the PSCCH;

[0099] The PSCCH is associated with a demodulation reference signal DMRS.

[0100] Optionally, the resource indication information is further used to indicate at least one of the following:

[0101] The target sidelink signal supports resource multiplexing in a time division multiplexing manner within a time slot;

[0102] The target sidelink signal supports resource multiplexing in a frequency domain in a frequency division multiplexing manner.

[0103] The target sidelink reference signal may be a sidelink positioning reference signal (sidelink Positioning Reference Signal, SL-PRS) or a sidelink channel state information reference signal (sidelink Channel State Information-Reference Signal, SL CSI-RS), or the first sidelink reference signal may be a reference signal associated with the FR2 beam.

[0104] In a possible application scenario of the present application, a first terminal receives downlink control information (DCI) sent by a network side device, where the DCI is used to schedule a target sidelink reference signal or positioning information corresponding to the target sidelink reference signal; then the first terminal determines resource indication information based on the DCI, and further determines the transmission resources of the target sidelink reference signal, and / or the resources of the PSCCH associated with the target sidelink reference signal, and the first terminal sends the target sidelink reference signal based on the determined transmission resources.

[0105] In an optional embodiment, since the bandwidth of the target sidelink reference signal is much larger than the bandwidth of the PSCCH, the frequency domain position of the PSCCH is information that needs to be indicated. If the resource mapping relationship between the PSCCH resource and the sidelink reference signal is a one-to-one mapping, any one of the indicated PSCCH resource and the sidelink reference signal resource can be used to deduce the other. However, if the resource mapping relationship between the PSCCH resource (for example, the time-frequency position of the PSCCH) and the sidelink reference signal is a one-to-many mapping, it is necessary to further distinguish it in combination with additional indication information or the code division resources of the PSCCH.

[0106] Alternatively, in a possible application scenario of the present application, there is a second terminal, and the second terminal is the transmitter of the target sidelink reference signal. The second terminal establishes a unicast connection with the first terminal, or the second terminal is positioned with the first terminal, or the second terminal has the same destination address as the first terminal. The second terminal can request the transmission resource of the target sidelink reference signal from the network side device through the first terminal. After the first terminal determines the resource indication information according to the DCI, it can directly forward the resource indication information to the second terminal, and the second terminal determines the transmission resource of the target sidelink reference signal from the candidate resources according to the resource indication information; the first terminal can also determine the target transmission resource of the target sidelink reference signal from the candidate resources according to the resource indication information, and then send the target transmission resource indication information to the second terminal, and the second terminal can directly send the target sidelink reference signal according to the target resource indication information.

[0107] Alternatively, in a possible application scenario of the present application, the first terminal determines resource indication information based on the received SCI, and further determines the transmission resource of the target sidelink reference signal and sends the target sidelink reference signal.

[0108] Alternatively, in a possible application scenario of the present application, the first terminal determines the resource indication information by itself according to the channel busy information specified by the protocol or pre-configured by the high layer and the transmission parameters of the sidelink reference signal associated with the channel busy information, without the need for resource scheduling with the network side device or other terminal devices.

[0109] Optionally, the resource indication information includes at least one of the following:

[0110] A first indication, where the first indication is used to indicate a resource element offset of the target sidelink reference signal, and / or a resource identifier of the target sidelink reference signal, and / or a resource identifier of the PSCCH;

[0111] a second indication, where the second indication is used to indicate a time domain position of the target sidelink reference signal and / or a time domain position of a PSCCH associated with the target sidelink reference signal;

[0112] a third indication, the third indication being used to indicate a time domain position of the target sidelink reference signal;

[0113] a fourth indication, where the fourth indication is used to indicate a resource pool to which the target sidelink reference signal belongs;

[0114] a fifth indication, the fifth indication being used to indicate a time-frequency position or a resource identifier of a corresponding target sidelink reference signal in at least one reserved time slot;

[0115] A sixth indication, the sixth indication being used to indicate a frequency domain position of the PSCCH corresponding to at least one reserved time slot;

[0116] a seventh indication, the seventh indication being used to indicate a time interval between a time slot where a start transmission resource of the target sidelink reference signal is located and a time slot where the downlink control information is located;

[0117] An eighth indication, wherein the eighth indication is used to indicate the time-frequency position of the target sidelink reference signal and / or the PSCCH in the first time slot of the candidate resource, and / or the time-frequency position of the target sidelink reference signal and / or the PSCCH in other time slots of the candidate resource;

[0118] A ninth indication, wherein the ninth indication is used to indicate a sending period of the target sidelink reference signal.

[0119] Optionally, the resource indication information includes the first indication, the first indication occupies X bits, and a value of X includes at least one of the following:

[0120] A value determined according to resource information configured by high-level information;

[0121] The value specified by the protocol.

[0122] The resource information configured by the high-level information includes at least one of the following:

[0123] The high-level information configures a threshold for the comb size;

[0124] The maximum value of the comb size of the high-level information configuration;

[0125] The comb size of the high-level information configuration;

[0126] The maximum number of resources of the sidelink reference signal configured by the high-level information;

[0127] The maximum number of PSCCH resources configured by the high-level information.

[0128] Exemplarily, the first indication occupies X bits, X=ceil(log2(N)); wherein ceil(x) represents rounding up. N may include at least one of the following:

[0129] N is the maximum combsize value that can be configured by higher layer information (e.g., RRC, SLPP, PC5-RRC);

[0130] If multiple combsizes are configured, N is the maximum combsize configured in the high-level information;

[0131] N is the combsize value configured in the high-level information;

[0132] N is the maximum number of SLPRS resources configured by high-level information;

[0133] N is the maximum number of PSCCHs configured by high-level information.

[0134] The second indication may be used to indicate the time domain starting position, the time domain ending position, the reserved time-frequency position, etc. of the target sidelink reference signal (hereinafter replaced by SLPRS) and / or the PSCCH.

[0135] Optionally, the resource indication information includes the second indication, the second indication occupies Y1 bits, and a value of Y1 includes at least one of the following:

[0136] a preset first value;

[0137] A second value, where the second value is a value determined according to the time domain resource information configured by the high-level information;

[0138] The product of a first parameter and the first value or the second value, the first parameter is determined according to the candidate time domain resource information corresponding to the target sidelink reference signal.

[0139] The value of the first numerical value may be 4, that is, considering that the SL-PRS may be mapped from the 2nd symbol to the 13th symbol.

[0140] As an example, the value of Y1 can be the value obtained by rounding up the second value, for example, Y1=ceil(log2(M)), ceil(x) means rounding up, M is the second value, and the second value is a value determined according to the time domain resource information configured according to the high-level information.

[0141] Optionally, the time domain resource information configured by the high-level information includes at least one of the following:

[0142] The high-layer information is for a maximum configuration threshold of the number of candidate starting symbols;

[0143] The high-layer information is a difference between a maximum configuration threshold of the number of symbols and a second parameter;

[0144] The high-layer information is a ratio of a maximum configuration threshold of the number of symbols to the second parameter.

[0145] The second parameter includes at least one of the following:

[0146] A minimum configuration threshold of the number of symbols occupied by the target sidelink reference signal;

[0147] A maximum configuration threshold of the number of symbols occupied by the target sidelink reference signal;

[0148] The minimum number of symbols configured by the high-level information;

[0149] The maximum number of symbols configured by the high-level information.

[0150] As another example, the value of Y1 may be the product of the first parameter and the first value or the second value. For example, Y1=N1*4bits, or Y1=N1*ceil(log2(M)). Wherein N1 is the first parameter in the present application, and the first parameter is determined according to the candidate time domain resource information corresponding to the target sidelink reference signal.

[0151] Optionally, the candidate time domain resource information includes at least one of the following:

[0152] The high-level information is for a maximum configuration threshold of the number of candidate time-domain positions;

[0153] The high-layer information includes a minimum configuration threshold for the number of symbols occupied by the target sidelink reference signal, and the number of symbols occupied by the target sidelink reference signal;

[0154] The maximum number of candidate positions configured by the high-level information;

[0155] The high-layer information includes a minimum number of symbols configured for the target sidelink reference signal and a number of symbols occupied by the target sidelink reference signal.

[0156] The number of candidate time domain positions may be the position of a starting symbol. For example, the number of candidate time domain positions is set to 1 by default.

[0157] The candidate time domain resource information may be the minimum configuration threshold of the number of symbols occupied by the target sidelink reference signal in the high-level information, and the number of symbols occupied by the target sidelink reference signal. For example, 9 symbols can be used for SL-PRS, and each SL-PRS occupies 2 symbols, then there can be 3 SL-PRS candidate time domain resources (9 / (2+1)=3) in a time slot. Each SL-PRS has an AGC symbol, which is not counted in the SL-PRS resources.

[0158] Optionally, when the value of Y1 is equal to the product of the first parameter and the first numerical value or the second numerical value, and the product of the first parameter and the first numerical value or the second numerical value is a preset code point, the time domain starting position of the target sidelink reference signal is a default candidate position.

[0159] The preset code point is a value specified by the protocol, such as preset code point 1. The default candidate position is a value defined by the protocol, or a value preconfigured by high-level information.

[0160] Optionally, the resource indication information includes the third indication, the third indication occupies Y2 bits, and the value of Y2 is determined according to the time domain resource information corresponding to the target sidelink reference signal.

[0161] For example, the third indication is used to indicate the time domain positions of one or two target sidelink reference signals reserved subsequently, and the indication information is included in TRIV, and optionally, the bit position is 5 bits or 9 bits, which are used to indicate the reservation of the time domain position of one target sidelink reference signal, or the reservation of the time domain positions of two target sidelink reference signals.

[0162] For example, Y2=ceil(log2(M)); ceil(x) represents rounding up. M may be the maximum number of time domain resources that can be configured for the target sidelink reference signal in a time slot.

[0163] Optionally, the resource indication information includes a fourth indication, and the fourth indication includes at least one of the following:

[0164] The fourth indication is used to indicate whether the resource pool to which the target transmission resource belongs is a dedicated resource pool or a shared resource pool;

[0165] The fourth indication is used to indicate identification information of the dedicated resource pool to which the target transmission resource belongs.

[0166] Exemplarily, the fourth indication may be Z bits. For example, Z=1. That is, 1 bit indicates whether it is a shared resource pool (shared RP) or a dedicated resource pool (dedicated R). It can be understood that the 1-bit indication method is a display indication. In an optional embodiment, the fourth indication may be 0 bits, indicating that the resource pool to which the transmission resource of the target sidelink reference signal belongs is a dedicated resource pool. Alternatively, Z=3 bits, indicating different dedicated resource pools (dedicated resource pools) respectively.

[0167] Optionally, the fourth instruction includes at least one of the following:

[0168] In a case where the fourth indication is a preset resource element offset code point, the fourth indication is used to indicate that the resource pool to which the target transmission resource belongs is a shared resource pool;

[0169] In a case where the fourth indication is a preset time domain position code point, the fourth indication is used to indicate that the resource pool to which the target transmission resource belongs is a shared resource pool.

[0170] The fifth indication in the embodiment of the present application may indicate the time-frequency position or resource identifier of the corresponding sidelink reference signal in at least one reserved time slot, for example, the time-frequency position or resource identifier of the corresponding sidelink reference signal in 2 or 3 time slots.

[0171] In an optional embodiment, the at least one time slot does not include the time-frequency position or resource identifier of the target sidelink reference signal transmitted in the time slot of the current target PSCCH, which can be determined based on the time-frequency position of the PSCCH, but includes indication information of the time-frequency position or resource identifier of the reserved one or two sidelink reference signals.

[0172] If the target sidelink reference signals corresponding to the reserved time slots are the same, for example, the target sidelink reference signals in 2 or 3 time slots correspond to the same resource identifier (such as SLPRSresourceID), then the fifth indication can occupy Xbit, and the value of X can be a value determined according to the resource information configured according to the high-level information, or a value specified by the protocol.

[0173] The time-frequency domain positions of the target sidelink reference signal corresponding to each reserved time slot are different. For example, the target sidelink reference signal corresponds to the same resource identifier (such as SLPRSresourceID) in 2 or 3 time slots. If the candidate resources only include the reserved resources of the current occasion (occasion), the resource identifier of the target sidelink reference signal can be determined according to the position of PSCCH, that is, the fifth indication. If the candidate resources include the resource ID of the current occasion and the subsequent reserved SLPRS, the bits occupied by the fifth indication can be Xbit==ceil(log2(N)), indicating the resource ID of the subsequent reserved SL PRS. If the candidate resources include the reservation of the resource ID of the SLPRS of the current occasion and the subsequent two resources, the bits occupied by the fifth indication can be X1bit=ceil(log2(A(N,2)), where A(N,2) is (N*(N-1)).

[0174] In an optional embodiment, the at least one time slot includes the time-frequency position or resource identifier of the target sidelink reference signal transmitted in the time slot in which the target PSCCH is currently sent. For example, when the time-frequency position of a PSCCH includes C associated reference signals, the fifth indication information needs to indicate which of the C reference signals the current target PSCCH is associated with. Further, if the time-frequency domain positions of the corresponding target sidelink reference signals in each reserved time slot are the same, 1 bit can be used to indicate the same, or no indication is given as the default; if the time-frequency domain positions of the corresponding target sidelink reference signals in each reserved time slot are the same, Xbit or X1bit is also required to indicate the time-frequency domain positions of the corresponding target sidelink reference signals in each reserved time slot or the indication information of the target sidelink reference signal resource identifier.

[0175] The sixth indication may indicate the frequency domain position of the PSCCH corresponding to at least one reserved time slot. In a typical case, the sixth indication may indicate the frequency domain position of the PSCCH corresponding to two or three reserved time slots.

[0176] When the frequency domain positions of the PSCCHs corresponding to 2 or 3 time slots are the same, the sixth indication may occupy X bits, where the value of X may be a value determined according to resource information configured by high-level information, or a value specified by the protocol.

[0177] In the case where the frequency domain positions of the PSCCHs corresponding to the two or three time slots are different, the sixth indication may include at least one of the following:

[0178] If the candidate resources only include resource reservations for the current time, the sixth indication may only include the position of the current PSCCH, and the bits occupied by the sixth indication may be Xbit=ceil(log2(N)), where N is the starting position of the candidate PSCCH;

[0179] If the candidate resources include the current time and a subsequent reserved PSCCH starting position, the bits occupied by the sixth indication are X1bit=ceil(log2(A(N,2)), where A(N,2) is (N*(N-1)), and N is the candidate PSCCH starting position;

[0180] If the candidate resources include the reserved resource ID of the SLPRS of the current time and the next two resources, the bits occupied by the sixth indication are X1bit=ceil(log2(A(N,3)), where A(N,3) is (N*(N-1)*(N-2)), and N is the candidate PSCCH starting position.

[0181] In an optional embodiment of the present application, before the first terminal determines the resource indication information according to the first information or the received downlink control information, the method further includes:

[0182] Step S11: The first terminal sends a first request message to a network side device; the first request message is used to request a transmission resource of the target sidelink reference signal;

[0183] The first terminal determines resource indication information according to the first information or the received downlink control information, including:

[0184] Step S12: The first terminal receives downlink control information sent by the network side device;

[0185] Step S13: The first terminal determines first resource indication information according to the downlink control information.

[0186] In an embodiment of the present application, the first terminal may send a first request to the network side device to request a transmission resource of a target sidelink reference signal. After receiving the first request, the network side device sends a DCI to the first terminal. The first terminal determines the first resource indication information according to the received DCI.

[0187] In an optional embodiment, the DCI includes a seventh indication, and the seventh indication is used to indicate the time interval between the time slot where the starting transmission resource of the target sidelink reference signal is located and the time slot where the downlink control information is located.

[0188] In addition, the DCI also includes at least one of the following:

[0189] A first indication, where the first indication is used to indicate a resource element offset of the target sidelink reference signal, and / or a resource identifier of the target sidelink reference signal, and / or a resource identifier of the PSCCH;

[0190] a second indication, where the second indication is used to indicate a time domain position of the target sidelink reference signal and / or a time domain position of a PSCCH associated with the target sidelink reference signal;

[0191] a third indication, the third indication being used to indicate a time domain position of the target sidelink reference signal;

[0192] a fourth indication, where the fourth indication is used to indicate a resource pool to which the target sidelink reference signal belongs;

[0193] a fifth indication, the fifth indication being used to indicate a time-frequency position or a resource identifier of a corresponding sidelink reference signal in at least one reserved time slot;

[0194] A sixth indication, the sixth indication being used to indicate a frequency domain position of a corresponding PSCCH on at least one reserved time slot;

[0195] An eighth indication, wherein the eighth indication is used to indicate the time-frequency position of the target sidelink reference signal and / or the PSCCH in the first time slot of the candidate resource, and / or the time-frequency position of the target sidelink reference signal and / or the PSCCH in other time slots of the candidate resource;

[0196] A ninth indication, wherein the ninth indication is used to indicate a sending period of the target sidelink reference signal.

[0197] The first request may be scheduling request (SR) information, or resource request information for sending SLPRS.

[0198] Optionally, the triggering object of the first request information includes at least one of the following:

[0199] Control unit of the media access control layer;

[0200] a buffer status report associated with the target sidelink reference signal;

[0201] Sidelink reference signal to be transmitted.

[0202] Optionally, the first request information and the target sidelink reference signal have the same priority.

[0203] Optionally, the first request information includes at least one of the following:

[0204] The destination identifier or source address identifier associated with the target sidelink reference signal

[0205] Synchronization source information of a target terminal; the target terminal is a terminal device that sends the target sidelink reference signal;

[0206] Resource configuration indication information; the resource configuration indication information is used to pre-configure the transmission resources of the target sidelink reference signal.

[0207] The synchronization source of the target terminal may be a base station (such as a base station ID) or a GNSS.

[0208] If the resource configuration indication information pre-configures resources that can be used for SLPRS, the corresponding identification information is associated, or the corresponding pre-configured resources that can be used for SLPRS are activated or deactivated by one-to-one mapping. The resource configuration indication information can indicate a specific resource size, such as the number of subchannels, the number of PRBs, the bandwidth of the shared resource pool, a specific resource period (such as a minimum transmission period, an expected transmission period), the expected number of retransmissions within the period, and the like.

[0209] Optionally, the target terminal includes at least one of the following:

[0210] the first terminal;

[0211] a terminal device for positioning with the first terminal;

[0212] a terminal device that establishes a unicast connection with the first terminal;

[0213] A terminal device having the same destination address as the first terminal.

[0214] Optionally, the resource configuration indication information includes at least one of the following:

[0215] identification information of candidate resources of the target sidelink reference signal desired by the target terminal;

[0216] The frequency domain resource size desired by the target terminal for transmitting the target sidelink reference signal;

[0217] A resource pool desired by the target terminal for transmitting the target sidelink reference signal;

[0218] A resource period of the target sidelink reference signal expected by the target terminal;

[0219] The target terminal expects an expected number of retransmissions of the target sidelink reference signal within a resource period.

[0220] The resource configuration indication information may specifically indicate information such as the resource pool type and resource pool identifier that the target terminal expects to use for transmitting the target sidelink reference signal.

[0221] Optionally, before the first terminal sends the first request information to the network side device, the method further includes:

[0222] The first terminal receives first sidelink control information sent by a second terminal, where the first sidelink control information is used to request a transmission resource of the target sidelink reference signal; the second terminal is the target terminal other than the first terminal.

[0223] Alternatively, the first terminal receives positioning information associated with a target sidelink reference signal sent by a second terminal, wherein the positioning information associated with the target sidelink reference signal is used to request transmission resources for the target sidelink reference signal; and the second terminal is the target terminal other than the first terminal.

[0224] In an embodiment of the present application, if the sender of the target sidelink reference signal is a second terminal, and the second terminal cannot directly request the transmission resources of the target sidelink reference signal from the network side device, the second terminal can send the first sidelink control information to the first terminal, and the first terminal makes a resource request to the network side device.

[0225] Specifically, when the first terminal receives the first sidelink control information sent by the second terminal, the first terminal sends the first request information to the network side device to request the transmission resource of the target sidelink reference signal. The network side device sends the DCI to the first terminal. When the first terminal receives the DCI, it determines the first resource indication information according to the DCI.

[0226] Optionally, the method further comprises:

[0227] Step S21: The first terminal determines a target transmission resource of the target sidelink reference signal from the candidate resources according to the first resource indication information;

[0228] Step S22: The first terminal sends second resource indication information to the second terminal, where the second resource indication information is used to indicate a target transmission resource of the target sidelink reference signal.

[0229] In an application scenario of the present application, after the first terminal determines the first resource indication information according to the DCI, it can first determine the target transmission resource of the target sidelink reference signal from the candidate resources according to the resource indication information, and then send the second resource indication information to the second terminal to indicate the target transmission resource of the target sidelink reference signal to the second terminal. After receiving the second resource indication information, the second terminal can directly send the target sidelink reference signal based on the target transmission resource.

[0230] Optionally, the method further comprises:

[0231] The first terminal sends the first resource indication information to the second terminal.

[0232] In another application scenario of the present application, after the first terminal determines the first resource indication information based on the DCI, the first resource indication information can be directly forwarded to the second terminal, and the second terminal determines the target transmission resource of the target sidelink reference signal from the candidate resources based on the first resource indication information.

[0233] Optionally, the target terminal includes at least two terminal devices.

[0234] In an embodiment of the present application, there may be multiple target terminals that send target sidelink reference signals.

[0235] Optionally, the method further comprises:

[0236] The first terminal receives second information sent by the network side device, where the second information is used to indicate a target transmission resource corresponding to the target terminal and / or a mapping relationship between the target transmission resource and the target terminal.

[0237] When there are multiple senders of the target bypass reference signal, the network side device can indicate the target transmission resource corresponding to the target terminal and / or the mapping relationship between the target transmission resource and the target terminal to the first terminal through the second information.

[0238] Optionally, the method further comprises:

[0239] The first terminal generates third resource indication information according to the mapping relationship between the target transmission resource and the target terminal, and sends the third resource indication information to the second terminal; the third resource indication information is used to indicate the target transmission resource corresponding to the second terminal; the second terminal is the target terminal other than the first terminal.

[0240] The first terminal may generate third resource indication information according to the mapping relationship between the target transmission resource and the target terminal, and send the third resource indication information to the second terminal to indicate the target transmission resource used to send the target sidelink reference signal to the second terminal. Different second terminals use different transmission resources to send the target sidelink reference signal, thereby avoiding resource conflicts.

[0241] In an optional embodiment of the present application, the method further includes:

[0242] The first terminal sends the target sidelink reference signal and sidelink control information associated with the target sidelink reference signal to a third terminal.

[0243] The target sidelink reference signal and the sidelink control information associated with the target sidelink reference signal are in the same time slot.

[0244] Reference Figure 4 , shows a transmission schematic diagram provided by an embodiment of the present application. Figure 4 As shown, the third terminal UE3 receives the target sidelink reference signal SLPRS1 and the associated sidelink control information SCI sent by the first terminal UE1 in a time slot, wherein the SCI indicates the SLPRS3 that the UE3 needs to send, for example, the SCI includes an SLPRS request message.

[0245] The third terminal UE3 can configure the SLPRS3 to be sent according to the received SLPRS1 and SCI.

[0246] Optionally, when the third terminal receives the target sidelink reference signal and the sidelink control information associated with the target sidelink reference signal sent by the first terminal in the same time slot, the physical layer of the third terminal sends the target resource indication information to the higher layer;

[0247] The third terminal sends a first sidelink reference signal (such as SLPRS3) according to the target resource indication information.

[0248] The target resource indication information includes at least one of the following:

[0249] A source address identifier associated with the target sidelink reference signal;

[0250] a destination address identifier associated with the target sidelink reference signal;

[0251] A sidelink reference signal request message associated with the target sidelink reference signal;

[0252] a propagation type of the target sidelink reference signal;

[0253] priority information of the target sidelink reference signal;

[0254] bandwidth information of the target sidelink reference signal;

[0255] The resource pool information of the target sidelink reference signal.

[0256] Optionally, the first sidelink reference signal sent by the third terminal has the same characteristic information as the target sidelink reference signal received by the third terminal; the characteristic information includes at least one of the following:

[0257] Priority information;

[0258] Resource pool information;

[0259] Bandwidth information;

[0260] Type of communication;

[0261] Destination address identifier.

[0262] In an optional embodiment of the present application, the first information includes channel busy information and a transmission parameter of a sidelink reference signal associated with the channel busy information; the first terminal determines the resource indication information according to the received downlink control information or the first information, including:

[0263] Step S31: The first terminal determines target channel busy information, and determines a transmission parameter of the target sidelink reference signal based on the first information; the transmission parameter of the target sidelink reference signal is associated with the target channel busy information;

[0264] Step S32: The first terminal determines resource indication information according to the transmission parameters.

[0265] In a possible application scenario of the present application, the first terminal determines the resource indication information by itself according to the channel busy information specified by the protocol or pre-configured by the high layer and the transmission parameters of the sidelink reference signal associated with the channel busy information, without the need for resource scheduling with the network side device or other terminal devices.

[0266] In a possible application scenario of the present application, the first terminal measures the channel busy rate and reports it to the network device, so that the network device determines the transmission parameters of the target sidechain reference signal according to the channel busy information specified by the protocol or pre-configured by the high layer and the transmission parameters of the sidechain reference signal associated with the channel busy information.

[0267] The channel busy rate is the ratio of the sidelink reference signal whose signal strength indication RSSI exceeds the first threshold measured by SLPRS in the channel busy rate measurement window on the resource pool in time slot n, wherein the channel busy rate measurement window is [na, n-1]. Therefore, the calculation of the channel busy rate is determined by the following parameters.

[0268] Optionally, the target channel busy information is determined according to third information, and the third information includes at least one of the following:

[0269] a ratio of sidelink reference signals whose received signal strength indication RSSI exceeds a first threshold within a channel busy rate measurement window;

[0270] The total number of resources of candidate sidelink reference signals within the channel busy rate measurement window.

[0271] The sidelink reference signal resource to be measured within the channel busy rate measurement window.

[0272] Optionally, the total number of resources of candidate side-link reference signals within the channel busy rate measurement window is determined based on a third parameter and a fourth parameter; the third parameter is used to indicate the total number of resources of candidate side-link reference signals within the time slot, and the fourth parameter is used to indicate the time slot length of the channel busy rate measurement window.

[0273] The third parameter includes at least one of the following:

[0274] a maximum number of resources of the candidate sidelink reference signals in a time slot;

[0275] The maximum number of PSCCH resources associated with the candidate sidelink reference signal in a time slot;

[0276] The comb size corresponding to the candidate sidelink reference signal;

[0277] The comb size corresponding to the candidate sidelink reference signal and the maximum number of candidate time domain resources of the candidate sidelink reference signal in a time slot.

[0278] Optionally, the sidelink reference signal resource to be measured in the channel busy rate measurement window includes at least one of the following:

[0279] Resources of all candidate sidelink reference signals within the channel busy rate measurement window;

[0280] Candidate sidelink reference signal resources that have a mapping relationship with the PSCCH within the channel busy rate measurement window;

[0281] Sidelink reference signal resources preconfigured in a resource pool and within the channel busy rate measurement window;

[0282] All PSCCH resources within the channel busy rate measurement window.

[0283] It should be noted that the mapping relationship between the PSCCH and the candidate sidelink reference signal resources within the channel busy rate measurement window may include: one PSCCH is mapped one to one with one candidate sidelink reference signal resource, or a mapping relationship exists between one PSCCH and multiple candidate sidelink reference signal resources. Thus, if a PSCCH has a mapping relationship with multiple candidate sidelink reference signal resources, if one of the candidate sidelink reference signal resources exceeds the threshold, the multiple candidate sidelink reference signal resources are calculated according to the RSSI exceeding the threshold. Alternatively, multiple candidate sidelink reference signal resources are calculated according to one candidate reference resource, and when calculating the total number of candidate sidelink reference signal resources within the channel busy rate measurement window, the above candidate resource calculation according to PSCCH is combined.

[0284] Optionally, the transmission parameter of the target sidelink reference signal satisfies at least one of the following:

[0285] The number of retransmissions corresponding to the target sidelink reference signal is less than or equal to a first number of retransmissions, where the first number of retransmissions is a maximum number of retransmissions of the sidelink reference signal determined in the first information according to the target channel busy information;

[0286] The transmission power of the target sidelink reference signal is less than or equal to a first transmission power, where the first transmission power is a maximum transmission power of the sidelink reference signal determined in the first information according to the target channel busy information;

[0287] The transmission period of the target sidelink reference signal is greater than or equal to a first transmission period, where the first transmission period is a maximum transmission period of the sidelink reference signal determined in the first information according to the target channel busy information;

[0288] The resource pool bandwidth of the transmission resource of the target sidelink reference signal is smaller than a preset range, where the preset range is the maximum bandwidth of the sidelink reference signal determined in the first information according to the target channel busy information.

[0289] Optionally, the resource indication information includes at least one of the following:

[0290] Resource pool indication information, used to indicate the resource pool to which the transmission resource of the target sidelink reference signal belongs;

[0291] Frequency domain resource indication information of the target sidelink reference signal;

[0292] a transmission period of the target sidelink reference signal;

[0293] The number of retransmissions of the target sidelink reference signal.

[0294] In an optional embodiment of the present application, the first information or the downlink control information includes at least one of the following:

[0295] first mapping information, where the first mapping information is used to indicate that a candidate time-frequency position of the PSCCH is associated with at least one code division resource of the PSCCH;

[0296] Second mapping information, where the second mapping information is used to indicate that one candidate time-frequency position of the PSCCH is associated with at least two candidate sidelink reference signal resources.

[0297] Furthermore, the resource indication information also includes at least one of the following items:

[0298] first mapping information, where the first mapping information is used to indicate that a candidate time-frequency position of the PSCCH is associated with at least one code division resource of the PSCCH;

[0299] Second mapping information, where the second mapping information is used to indicate that one candidate time-frequency position of the PSCCH is associated with at least two candidate sidelink reference signal resources.

[0300] This embodiment is used to solve the problem that the time-frequency resources of the PSCCH and the resources of the reference signal are one-to-many. By introducing the code division resources of the PSCCH, the resources of the PSCCH and the resources of the reference signal are mapped one-to-one. In this case, the maximum number of the resources of the PSCCH is equal to the number of the time-frequency resources of the PSCCH multiplied by the maximum number of the code division resources of the PSCCH. Optionally, the maximum number of the code division resources of the PSCCH is one of 1, 2, and 3.

[0301] Optionally, the code division resources of the PSCCH include identification information or indication information of a cyclic shift parameter of a demodulation reference signal of the PSCCH.

[0302] Among them, the cyclic shift w of the demodulation reference signal (DMRS) associated with multiple PSCCH code division resources f,i (k) Different. Alternatively, multiple PSCCH code division resources are mapped one-to-one with multiple SLPRS candidate resources.

[0303] For example, when k=0, the code division resources of PSCCH are mapped to the SLPRS candidate resources with the lowest or highest ranking in {multiple SL PRS candidate resources}; when k=1, the code division resources of PSCCH are mapped to the SLPRS candidate resources with the second highest ranking in {multiple SLPRS candidate resources}.

[0304] For example, the resource mapping relationship between the PSCCH resource and the reference signal includes at least one of the following:

[0305] PSCCH resource identifier

[0306] Resource Identifier of SLPRS

[0307] k is used to indicate the code division resource identifier.

[0308] Alternatively, when k=0, the code division resources of the PSCCH are mapped to the SLPRS candidate resources with the earliest time domain position or frequency domain position among {multiple SLPRS candidate resources}.

[0309] Optionally, in a case where one candidate time-frequency position of the PSCCH is associated with at least two candidate sidelink reference signal resources, the candidate time-frequency position of the PSCCH is associated with at least two code division resources of the PSCCH.

[0310] Optionally, when the candidate time-frequency position of the PSCCH is associated with at least two code division resources of the PSCCH, the code division resources of the PSCCH satisfy at least one of the following:

[0311] The code division resource of the PSCCH is associated with a cyclic shift parameter of a demodulation reference signal of the PSCCH;

[0312] The code division resources and time-frequency positions of the PSCCH are mapped one-to-one with the candidate sidelink reference signal resources;

[0313] The code division resources and time-frequency positions of the PSCCH are mapped many-to-one with candidate sidelink reference signal resources;

[0314] The code division resource of the PSCCH is mapped to one candidate sidelink reference signal resource of the at least two candidate sidelink reference signal resources.

[0315] Optionally, the number of candidate sidelink reference signal resources associated with the candidate time-frequency positions of the PSCCH is less than or equal to a preset number.

[0316] The value of the preset number may be 2 or 3, or a number predefined by the protocol, or a number preconfigured by high-level information, and so on.

[0317] Optionally, the PSCCH resource includes at least one of the following:

[0318] The time-frequency position of the PSCCH and the code division resources of the PSCCH;

[0319] The time-frequency position of the PSCCH and the cyclic shift parameter of the demodulation reference signal of the PSCCH.

[0320] Optionally, the first information or the downlink control information further includes at least one of the following:

[0321] Indication information of the time-frequency position of the PSCCH and indication information of the code division resources of the PSCCH;

[0322] The identification information of the PSCCH.

[0323] In an optional embodiment of the present application, the first information includes second sidelink control information, and the first terminal determines the resource indication information according to the first information or the received downlink control information, including:

[0324] The first terminal determines resource indication information according to the received second side link control information.

[0325] The second sidelink control information is used to schedule a target sidelink reference signal or positioning information corresponding to the target sidelink reference signal.

[0326] Optionally, the method further comprises:

[0327] The first terminal determines a target transmission resource of the target sidelink reference signal according to the resource indication information;

[0328] The first terminal sends the target sidelink reference signal according to the target transmission resource.

[0329] In a possible application scenario of the present application, the first terminal determines resource indication information based on the received SCI, and further determines the transmission resource of the target sidelink reference signal and sends the target sidelink reference signal.

[0330] In an optional embodiment of the present application, the method further includes:

[0331] Step S41, the first terminal configures a control resource set and / or a search space (Searchspace) according to high-level information;

[0332] Step S42: The first terminal detects the downlink control information according to the control resource set and / or the search space, where the downlink control information is used to schedule the target sidelink reference signal or the positioning information corresponding to the target sidelink reference signal.

[0333] In an embodiment of the present application, the first terminal may configure a control resource set and / or a search space according to high-level information to detect received downlink control information, wherein the downlink control information may be DCI or DCI format 3-X.

[0334] Optionally, the Searchspace and DCIformat3-0 / DCIformat3-1 are the same Searchspace.

[0335] Optionally, the Searchspace and DCIformat3-0 / DCIformat3-1 are different Searchspaces.

[0336] Optionally, the DCIformat3-X (X is not equal to 0, 1) is aligned with the size of DCIformat3-0 / DCIformat3-1.

[0337] Optionally, the size of the DCIformat3-X is padded to the size of the smallest DCIformat in the cell that is larger than DCIformat3-X. For example, DCIformat3-X is 23 bits, and there are other DCIsizes: 20 bits, 30 bits, 50 bits, and 70 bits, then DCIformat3-X is padded to a size of 30 bits.

[0338] Optionally, the size of the DCIformat3-X is padded to the size of DCIformatY, where DCIformatY is a DCIformat predefined by the protocol / configured by the network.

[0339] In an optional embodiment of the present application, when a physical sidelink shared channel PSSCH is included in a time slot of the target transmission resource, the method further includes:

[0340] Step S51: The first terminal determines the time-frequency position of the second-level sidelink control information; and / or,

[0341] Step S52: The first terminal determines a transport block size for transmitting the PSSCH.

[0342] In the case where the time slot of the target transmission resource of the target sidelink reference signal includes the PSSCH, the first terminal may further determine the time-frequency position of the second-level SCI and / or the transmission block size corresponding to the PSSCH.

[0343] Optionally, the first terminal determines a transport block size for transmitting the PSSCH, including:

[0344] The first terminal determines a resource element for transmitting the PSSCH.

[0345] The number of resource elements is determined according to third information, and the third information includes:

[0346] The number of subcarriers in a physical resource block;

[0347] The number of symbols used for the sidelink in one time slot;

[0348] The number of symbols occupied by the physical sidelink feedback channel PSFCH;

[0349] The number of symbols occupied by the sidelink reference signal;

[0350] The number of resource elements occupied by the Phase Tracking Reference Signal (PT-RS) and the Channel State Information Reference Signal (CSI-RS);

[0351] The number of resource elements occupied by the demodulation reference signal in a time slot.

[0352] Optionally, the second-level sidelink control information is mapped to the PSSCH.

[0353] Optionally, the starting symbol mapped to the second-level sidelink control information is the symbol of the first demodulation reference signal of the PSSCH, and the second-level sidelink control information includes data transmission type indication information of the second-level sidelink control information.

[0354] Optionally, the number of coded modulation symbols of the second-level sidelink control information is related to the number of symbols used to transmit PSSCH in the time slot; the number of symbols used to transmit PSSCH in the time slot is related to the number of symbols occupied by the sidelink reference signal in the time slot.

[0355] Optionally, when the first-level sidelink control information indicates that the second-level sidelink control information is 2-D, the number of symbols used to transmit PSSCH in the time slot is related to the number of symbols occupied by the sidelink reference signal in the time slot.

[0356] Optionally, the number of symbols occupied by the sidelink reference signal in the time slot includes at least one of the following:

[0357] The number of symbols configured by the higher layer;

[0358] The number of symbols preconfigured by the network-side device or protocol;

[0359] The number of symbols is determined according to the mode of the demodulation reference signal indicated by the first-level sidelink reference signal.

[0360] The transmission method provided in the embodiment of the present application defines the transmission resource of the sidelink reference signal and the indication information of the PSCCH resource associated with the sidelink reference signal. The first terminal can determine the resource indication information based on the first information or the received downlink control information, and the resource indication information is used to determine the transmission resource of the target sidelink reference signal and / or the PSCCH resource associated with the target sidelink reference signal from the preconfigured candidate resources.

[0361] The transmission method provided in this application will be illustrated below with reference to specific embodiments.

[0362] In an optional embodiment of the present application, the network side device configures the SL-PRS in the resource pool as comb N multiplexing in one slot, and there are M candidate resources in the time domain.

[0363] Where N = {N1, N2, N3}. Note that N can also be just one.

[0364] The maximum value of N is Nmax, where Nmax is a parameter predefined in the protocol / configured in the network.

[0365] The maximum value of M is Mmax, where Mmax is a value determined according to parameters predefined in the protocol / network configuration.

[0366] Optionally, the DCI or SCI carries X bits information indicating a resource element offset (REoffset) of the SLPRS, where X includes at least one of the following:

[0367] X = ceil[log2(max(N))];

[0368] X=ceil[log2(Nmax)].

[0369] Among them, ceil(x) means taking the integer of x upwards, and max means taking the maximum value.

[0370] Optionally, the DCI or SCI carries Xbits information to indicate the SLPRS time domain position, where X can be expressed as: X=ceil[log2(M)], and / or, X=ceil[log2(Mmax)].

[0371] Optionally, the DCI or SCI carries Xbits information indicating the SLPRSresourceID, where X may include at least one of the following:

[0372] X = ceil[log2(max(N)*M)];

[0373] X = ceil[log2(Nmax*M)];

[0374] X=ceil[log2(Nmax*Mmax)].

[0375] Currently, the scheduling request (SR) can only be triggered by SL-SCH resources (SL BSR) or SL-CSI reporting. However, in R18, only PSCCH and SL PRS can be transmitted in the dedicated resource pool. In mode 1, if the resource request cannot be triggered, the terminal cannot complete the positioning service.

[0376] In an optional embodiment of the present application, a Scheduling Request (SR) may be used to request SL PRS resources, and the SR may be sent by a sender of the SL PRS.

[0377] The SR sent by the transmitter of the SL PRS satisfies at least one of the following:

[0378] The SR can be mapped to a specific RNTI scrambled, indicating the resources used for the SL PRS, requesting dedicated resources on the dedicated resource pool;

[0379] The SR may be associated with a logical channel dedicated to the SL PRS;

[0380] The priority of the SR association is consistent with the priority of the SL PRS.

[0381] Reference Figure 5 , shows a schematic diagram of a resource structure. Figure 5 As shown, the current scheduling request (BSR) can only indicate the size of the SL data, but in R18, the dedicated resource pool can only transmit PSCCH and SL PRS. In mode 1, if the bandwidth desired by SL PRS cannot be obtained, it is impossible to complete the scheduling of reasonable resources for the terminal.

[0382] In an optional embodiment of the present application, the BSR in the related art may be enhanced. Specifically, if the destination index or LCG ID is associated with a location service (wherein the destination ID has indicated whether it is associated with a location-related service in the RRC information), the buffer size may be redefined as at least one of the following:

[0383] Resource pool ID (such as dedicated resource pool ID);

[0384] Number of Subchannels

[0385] The size of the bandwidth;

[0386] The ID of the pre-configured SL PRS resource.

[0387] In another optional embodiment of the present application, a MAC CE may be added to request resources for the SL PRS, and the MAC CE includes at least one of the following information:

[0388] destination index;

[0389] Resource size (e.g., number of subchannels);

[0390] Resource pool ID (such as dedicated resource pool ID);

[0391] Resource pool type;

[0392] SL PRS sending period;

[0393] Number of retransmissions within a period.

[0394] Optionally, if the enhanced BSR or the newly added MAC CE does not receive resource scheduling for SL PRS transmission within a preset time (such as before the retransmission time expires), the enhanced BSR or the newly added MAC CE will be resent.

[0395] Optionally, the enhanced BSR or the newly added MAC CE may be periodic, and the period is configured by RRC.

[0396] In another optional embodiment of the present application, a new MAC CE is used to request pre-configured resources for the SL PRS transmission. Before requesting the SL PRS transmission resources, the first terminal receives one or more resource information for transmitting the SL PRS configured by the network side device, and the MAC CE includes at least one of the following information:

[0397] destination index;

[0398] Resource size (e.g., number of subchannels);

[0399] Resource pool ID (such as dedicated resource pool ID);

[0400] Resource pool type;

[0401] A preconfigured resource ID for transmission of the SL PRS;

[0402] Optionally, the preconfigured resources for the SL PRS transmission may determine whether the resources are activated or deactivated according to a configured grant confirmation, and the configured grant confirmation includes at least one of the following:

[0403] The stator (Elcid) used to indicate SL PRS or positioning service;

[0404] The ID of the destination;

[0405] An indication of the resource pool or its type (shared or dedicated).

[0406] In an optional embodiment of the present application, considering that the transmission of SL PRS may need to consider CBR, this embodiment considers the definition of CBR and how the UE sends SL PRS when the CBR is limited.

[0407] Specifically, the CBR is defined as the proportion of SL PRS resources whose SL PRS RSSI within the CBR measurement window exceeds a predefined SL RSSI threshold under the dedicated resource pool measured by the UE in slot n.

[0408] In a typical embodiment, there are N candidate SL PRS resources in one slot, and the ratio of the SL PRS resources is: SL PRS resources exceeding RSSI / N*CBR window length.

[0409] In such Figure 6 In a typical embodiment shown, the candidate SL PRS resources within 1 slot are N1, which is greater than the candidate PSCCH resources N2.

[0410] Optionally, the ratio of the SL PRS resource is: SL PRS resources exceeding RSSI / N*CBR window length.

[0411] Optionally, the ratio of the SL PRS resource is: SL PRS resources exceeding RSSI / N2*CBR window length.

[0412] Optionally, the ratio of the SL PRS resource is: PSCCH resources exceeding RSSI / N2*CBR window length.

[0413] In another optional embodiment of the present application, referring to Figure 7 The resource structure diagram is shown in Figure 1. Figure 7 As shown, based on the situation in the figure below, SL PRS1 and SL PRS7 map the same PSCCH time-frequency position; the same time-frequency resources map one or more PSCCHs.

[0414] For example, including two or three PSCCHs, the cyclic shift w of the DMRS of the PSCCH associated with the PSCCH on the same time-frequency resource f,i (k′) is different.

[0415] In a typical embodiment, SL PRS 1 corresponds to k′=0 (or k′=0+offset, or the order with the overlapping SLPRS), or SL PRS 7 corresponds to k′=1 (or k′=1+offset, or the order with the overlapping SL PRS).

[0416] In a typical embodiment, a dedicated resource pool includes SL PRS 0, SL PRS 1, ..., SL PRS N1; PSCCH time-frequency resource 0, PSCCH time-frequency resource 1, ..., PSCCH time-frequency resource N2, wherein N1>N2.

[0417] The PSCCH time-frequency resource 0 is mapped to the SLPRS resource of mod(SL PRS X, N2)==0, that is, SL PRS0, SL PRS N2, ..., SL PRS N2*K. Further, the code division resource w associated with the PSCCH time-frequency resource 0 is f,i (k′=0) is mapped one-to-one with SLPRS 0, and the code division resource w associated with PSCCH time-frequency resource 0 f,i (k′=1) is mapped one-to-one with SL PRS N2.

[0418] The PSCCH time-frequency resources are associated with one or more of the following information: the frequency domain starting position of the PSCCH and the sequence ID of the PSCCH time-frequency resources.

[0419] The PSCCH code division resource is associated with one or more of the following information: the frequency domain starting position of the PSCCH, the sequence ID of the PSCCH time-frequency resource, the PSCCH time-frequency resource, and the cyclic shift of the DMRS.

[0420] Among them, the SL PRS resources are associated with one or more of the following information: combsize N of SL PRS, RE offset of SL PRS, starting symbol of SL PRS, symbol length of SL PRS, frequency domain starting position of SL PRS, and resource ID of SL PRS.

[0421] It should be noted that the cyclic shift of the DMRS of the PSCCH should be multiplied by the amplitude scaling factor to comply with the transmit power specified in [5, 38.213] and mapped in order according to the resource elements of the antenna port starting from the resource elements in the slot of the antenna port. For details, please refer to the following formula and Table 1:

[0422]

[0423] in, k′=0,1,2;n=0,1,….

[0424] Table 1

[0425]

[0426] In a second aspect, the present application embodiment provides a resource determination method. Figure 8 , shows a flow chart of a resource determination method provided by an embodiment of the present application. The method is applied to a second terminal, such as Figure 8 As shown, the method may specifically include:

[0427] Step 201: A second terminal sends first sidelink control information to a first terminal, where the first sidelink control information is used to request a transmission resource of a target sidelink reference signal; or

[0428] Step 202: The second terminal sends second sidelink control information to the first terminal, where the second sidelink control information is used to schedule the target sidelink reference signal or positioning information corresponding to the target sidelink reference signal.

[0429] The second sidelink control information carries resource indication information, and the resource indication information is used to determine the transmission resources of the target sidelink reference signal and / or the resources of the physical sidelink control channel PSCCH associated with the target sidelink reference signal from pre-configured candidate resources.

[0430] Optionally, the PSCCH resource includes at least one of the following:

[0431] The time-frequency position of the PSCCH;

[0432] The code division resources of the PSCCH;

[0433] The PSCCH is associated with a demodulation reference signal DMRS.

[0434] Optionally, the resource indication information is further used to indicate at least one of the following:

[0435] The target sidelink signal supports resource multiplexing in a time division multiplexing manner within a time slot;

[0436] The target sidelink signal supports resource multiplexing in a frequency domain in a frequency division multiplexing manner.

[0437] In an embodiment of the present application, the second terminal may serve as a transmitter of a target sidelink reference signal, and send first sidelink control information to the first terminal to request a transmission resource of the target sidelink reference signal. The second terminal may also serve as a scheduler, and the second terminal sends second sidelink control information to the first terminal to schedule the target sidelink reference signal or the positioning information corresponding to the target sidelink reference signal, and the first terminal sends the target sidelink reference signal to the second terminal.

[0438] The target sidelink reference signal may be a sidelink positioning reference signal (sidelink Positioning Reference Signal, SL-PRS) or a sidelink channel state information reference signal (sidelink Channel State Information-Reference Signal, SLCSI-RS), or the first sidelink reference signal may be a reference signal associated with the FR2 beam.

[0439] Optionally, the second terminal establishes a unicast connection with the first terminal, or the second terminal performs positioning with the first terminal, or the second terminal and the first terminal have the same destination address.

[0440] Optionally, the resource indication information includes at least one of the following:

[0441] A first indication, where the first indication is used to indicate a resource element offset of the target sidelink reference signal, and / or a resource identifier of the target sidelink reference signal, and / or a resource identifier of the PSCCH;

[0442] a second indication, where the second indication is used to indicate a time domain position of the target sidelink reference signal and / or a time domain position of a PSCCH associated with the target sidelink reference signal;

[0443] a third indication, the third indication being used to indicate a time domain position of the target sidelink reference signal;

[0444] a fourth indication, where the fourth indication is used to indicate a resource pool to which the target sidelink reference signal belongs;

[0445] a fifth indication, the fifth indication being used to indicate a time-frequency position or a resource identifier of a corresponding sidelink reference signal in at least one reserved time slot;

[0446] A sixth indication, where the sixth indication is used to indicate a frequency domain position of a corresponding PSCCH on at least one reserved time slot;

[0447] a seventh indication, the seventh indication being used to indicate a time interval between a time slot where a start transmission resource of the target sidelink reference signal is located and a time slot where the downlink control information is located;

[0448] An eighth indication, wherein the eighth indication is used to indicate the time-frequency position of the target sidelink reference signal and / or the PSCCH in the first time slot of the candidate resource, and / or the time-frequency position of the target sidelink reference signal and / or the PSCCH in other time slots of the candidate resource;

[0449] A ninth indication, wherein the ninth indication is used to indicate a sending period of the target sidelink reference signal.

[0450] Optionally, the resource indication information includes the first indication, the first indication occupies X bits, and a value of X includes at least one of the following:

[0451] A value determined according to resource information configured by high-level information;

[0452] The value specified by the protocol.

[0453] The resource information configured by the high-level information includes at least one of the following:

[0454] The high-level information configures a threshold for the comb size;

[0455] The maximum value of the comb size of the high-level information configuration;

[0456] The comb size of the high-level information configuration;

[0457] The maximum number of resources of the sidelink reference signal configured by the high-level information;

[0458] The maximum number of PSCCH resources configured by the high-level information.

[0459] Exemplarily, the first indication occupies X bits, X=ceil(log2(N)); wherein ceil(x) represents rounding up. N may include at least one of the following:

[0460] N is the maximum combsize value that can be configured by higher layer information (e.g., RRC, SLPP, PC5-RRC);

[0461] If multiple combsizes are configured, N is the maximum combsize configured in the high-level information;

[0462] N is the combsize value configured in the high-level information;

[0463] N is the maximum number of SLPRS resources configured by high-level information;

[0464] N is the maximum value of the number of PSCCHs configured by high-level information.

[0465] Optionally, the resource indication information includes the second indication, the second indication occupies Y1 bits, and a value of Y1 includes at least one of the following:

[0466] a preset first value;

[0467] A second value, where the second value is a value determined according to the time domain resource information configured by the high-level information;

[0468] The product of a first parameter and the first value or the second value, the first parameter is determined according to the candidate time domain resource information corresponding to the target sidelink reference signal.

[0469] The value of the first numerical value may be 4, that is, considering that the SL-PRS may be mapped from the 2nd symbol to the 13th symbol.

[0470] As an example, the value of Y1 can be the value obtained by rounding up the second value, for example, Y1=ceil(log2(M)), ceil(x) means rounding up, M is the second value, and the second value is a value determined according to the time domain resource information configured according to the high-level information.

[0471] Optionally, the time domain resource information configured by the high-level information includes at least one of the following:

[0472] The high-layer information is for a maximum configuration threshold of the number of candidate starting symbols;

[0473] The high-layer information is a difference between a maximum configuration threshold of the number of symbols and a second parameter;

[0474] The high-layer information is a ratio of a maximum configuration threshold of the number of symbols to the second parameter.

[0475] The second parameter includes at least one of the following:

[0476] A minimum configuration threshold of the number of symbols occupied by the target sidelink reference signal;

[0477] A maximum configuration threshold of the number of symbols occupied by the target sidelink reference signal;

[0478] The minimum number of symbols configured by the high-level information;

[0479] The maximum number of symbols configured by the high-level information.

[0480] As another example, the value of Y1 may be the product of the first parameter and the first value or the second value. For example, Y1=N1*4bits, or Y1=N1*ceil(log2(M)). Wherein N1 is the first parameter in the present application, and the first parameter is determined according to the candidate time domain resource information corresponding to the target sidelink reference signal.

[0481] Optionally, the candidate time domain resource information includes at least one of the following:

[0482] The high-level information is for a maximum configuration threshold of the number of candidate time-domain positions;

[0483] The high-layer information includes a minimum configuration threshold for the number of symbols occupied by the target sidelink reference signal, and the number of symbols occupied by the target sidelink reference signal;

[0484] The maximum number of candidate positions configured by the high-level information;

[0485] The high-layer information includes a minimum number of symbols configured for the target sidelink reference signal and a number of symbols occupied by the target sidelink reference signal.

[0486] The number of candidate time domain positions may be the position of a starting symbol. For example, the number of candidate time domain positions is set to 1 by default.

[0487] The candidate time domain resource information may be the minimum configuration threshold of the number of symbols occupied by the target sidelink reference signal in the high-level information, and the number of symbols occupied by the target sidelink reference signal. For example, 9 symbols can be used for SL-PRS, and each SL-PRS occupies 2 symbols, then there can be 3 SL-PRS candidate time domain resources (9 / (2+1)=3) in a time slot. Each SL-PRS has an AGC symbol, which is not counted in the SL-PRS resources.

[0488] Optionally, when the value of Y1 is equal to the product of the first parameter and the first numerical value or the second numerical value, and the product of the first parameter and the first numerical value or the second numerical value is a preset code point, the time domain starting position of the target sidelink reference signal is a default candidate position.

[0489] Optionally, the resource indication information includes the third indication, the third indication occupies Y2 bits, and the value of Y2 is determined according to the time domain resource information corresponding to the target sidelink reference signal.

[0490] Optionally, the resource indication information includes a fourth indication, and the fourth indication includes at least one of the following:

[0491] The fourth indication is used to indicate whether the resource pool to which the target transmission resource belongs is a dedicated resource pool or a shared resource pool;

[0492] The fourth indication is used to indicate identification information of the dedicated resource pool to which the target transmission resource belongs.

[0493] Exemplarily, the fourth indication may be Z bits. For example, Z=1. That is, 1 bit indicates whether it is a shared resource pool (shared RP) or a dedicated resource pool (dedicated R). It can be understood that the 1-bit indication method is a display indication. In an optional embodiment, the fourth indication may be 0 bits, indicating that the resource pool to which the transmission resource of the target sidelink reference signal belongs is a dedicated resource pool. Alternatively, Z=3 bits, indicating different dedicated resource pools (dedicated resource pools) respectively.

[0494] Optionally, the fourth instruction includes at least one of the following:

[0495] In a case where the fourth indication is a preset resource element offset code point, the fourth indication is used to indicate that the resource pool to which the target transmission resource belongs is a shared resource pool;

[0496] In a case where the fourth indication is a preset time domain position code point, the fourth indication is used to indicate that the resource pool to which the target transmission resource belongs is a shared resource pool.

[0497] In an optional embodiment of the present application, after the second terminal sends the first sidelink control information to the first terminal, the method further includes:

[0498] The second terminal receives first resource indication information sent by the first terminal; the first resource indication information is resource indication information determined based on downlink control information, and the downlink control information is used to schedule the target sidelink reference signal or the positioning information corresponding to the target sidelink reference signal;

[0499] The second terminal determines a target transmission resource according to the first resource indication information, and sends the target sidelink reference signal based on the target transmission resource.

[0500] In a possible application scenario of the present application, the second terminal may request the transmission resource of the target sidelink reference signal from the network side device through the first terminal. After the first terminal determines the first resource indication information according to the DCI, the first resource indication information may be directly forwarded to the second terminal, and the second terminal determines the transmission resource of the target sidelink reference signal from the candidate resources according to the resource indication information.

[0501] Optionally, after the second terminal sends the first sidelink control information to the first terminal, the method further includes:

[0502] The second terminal receives second resource indication information sent by the first terminal, where the second resource indication information is used to indicate a target transmission resource of the target sidelink reference signal;

[0503] The second terminal sends the target sidelink reference signal based on the target transmission resource indicated by the second resource indication information.

[0504] In another possible application scenario of the present application, after the first terminal determines the first resource indication information according to the DCI, it can also determine the target transmission resource of the target sidelink reference signal from the candidate resources according to the first resource indication information, and then send the second transmission resource indication information to the second terminal. The second terminal can directly send the target sidelink reference signal according to the second resource indication information.

[0505] Optionally, after the second terminal sends the first sidelink control information to the first terminal, the method further includes:

[0506] The second terminal receives third resource indication information sent by the first terminal, where the third resource indication information is used to indicate a target transmission resource corresponding to the second terminal;

[0507] The second terminal sends the target sidelink reference signal based on the target transmission resource indicated by the third resource indication information.

[0508] In an embodiment of the present application, there may be multiple terminal devices that send a target sidelink reference signal. When there are multiple senders of the target sidelink reference signal, the network side device may indicate the target transmission resource corresponding to the target terminal and / or the mapping relationship between the target transmission resource and the target terminal to the first terminal through the second information. The first terminal generates third resource indication information based on the mapping relationship between the target transmission resource and the target terminal, and sends the third resource indication information to the second terminal. The second terminal sends the target sidelink reference signal based on the target transmission resource indicated by the third resource indication information.

[0509] It can be understood that different second terminals use different transmission resources to send the target sidelink reference signal, thereby avoiding resource conflicts.

[0510] In a third aspect, the present application embodiment provides a resource determination method. Fig. 9 , shows a flow chart of a resource determination method provided by an embodiment of the present application. The method is applied to a third terminal, such as Fig. 9 As shown, the method may specifically include:

[0511] Step 301: When a third terminal receives a target sidelink reference signal and sidelink control information associated with the target sidelink reference signal sent by a first terminal in a same time slot, a physical layer of the third terminal sends target resource indication information to a higher layer;

[0512] Step 302: The third terminal sends a first sidelink reference signal according to the target resource indication information.

[0513] The target resource indication information includes at least one of the following:

[0514] A source address identifier associated with the target sidelink reference signal;

[0515] a destination address identifier associated with the target sidelink reference signal;

[0516] A sidelink reference signal request message associated with the target sidelink reference signal;

[0517] a propagation type of the target sidelink reference signal;

[0518] priority information of the target sidelink reference signal;

[0519] bandwidth information of the target sidelink reference signal;

[0520] The resource pool information of the target sidelink reference signal.

[0521] like Figure 4 As shown, the third terminal UE3 receives the target sidelink reference signal SLPRS1 and the associated sidelink control information SCI sent by the first terminal UE1 in a time slot. Among them, SCI indicates the SLPRS3 that UE3 needs to send, for example, SCI includes an SLPRS request message. The third terminal UE3 can configure the SLPRS3 to be sent according to the received SLPRS1 and SCI.

[0522] Optionally, the first sidelink reference signal sent by the third terminal has the same characteristic information as the target sidelink reference signal received by the third terminal; the characteristic information includes at least one of the following:

[0523] Priority information;

[0524] Resource pool information;

[0525] Bandwidth information;

[0526] Type of communication;

[0527] Destination address identifier.

[0528] It should be noted that the second terminal and the third terminal in the embodiment of the present application can be the same terminal device or different terminal devices. The second terminal and the third terminal can interact with the first terminal in the present application to execute the transmission method described in the second aspect and / or the third method.

[0529] In a fourth aspect, an embodiment of the present application provides a resource determination method. Fig.10 , shows a flow chart of a resource determination method provided by an embodiment of the present application. The method is applied to a network side device, such as Fig.10 As shown, the method may specifically include:

[0530] Step 401: A network-side device sends downlink control information to a first terminal, wherein the downlink control information carries resource indication information.

[0531] The resource indication information is used to determine, from pre-configured candidate resources, a transmission resource of a target sidelink reference signal and / or a resource of a physical sidelink control channel PSCCH associated with the target sidelink reference signal.

[0532] Optionally, the resource indication information is further used to indicate at least one of the following:

[0533] The target sidelink signal supports resource multiplexing in a time division multiplexing manner within a time slot;

[0534] The target sidelink signal supports resource multiplexing in a frequency domain in a frequency division multiplexing manner.

[0535] Optionally, the PSCCH resource includes at least one of the following:

[0536] The time-frequency position of the PSCCH;

[0537] The code division resources of the PSCCH;

[0538] The PSCCH is associated with a demodulation reference signal DMRS.

[0539] In a possible application scenario of the present application, a first terminal receives downlink control information (DCI) sent by a network side device, where the DCI is used to schedule a target sidelink reference signal or positioning information corresponding to the target sidelink reference signal; then the first terminal determines resource indication information based on the DCI, and further determines the transmission resources of the target sidelink reference signal, and / or the resources of the PSCCH associated with the target sidelink reference signal, and the first terminal sends the target sidelink reference signal based on the determined transmission resources.

[0540] Alternatively, in a possible application scenario of the present application, there is a second terminal, and the second terminal is the transmitter of the target sidelink reference signal. The second terminal establishes a unicast connection with the first terminal, or the second terminal is positioned with the first terminal, or the second terminal has the same destination address as the first terminal. The second terminal can request the transmission resource of the target sidelink reference signal from the network side device through the first terminal. After the first terminal determines the resource indication information according to the DCI, it can directly forward the resource indication information to the second terminal, and the second terminal determines the transmission resource of the target sidelink reference signal from the candidate resources according to the resource indication information; the first terminal can also determine the target transmission resource of the target sidelink reference signal from the candidate resources according to the resource indication information, and then send the target transmission resource indication information to the second terminal, and the second terminal can directly send the target sidelink reference signal according to the target resource indication information.

[0541] Optionally, the resource indication information includes at least one of the following:

[0542] A first indication, where the first indication is used to indicate a resource element offset of the target sidelink reference signal, and / or a resource identifier of the target sidelink reference signal, and / or a resource identifier of the PSCCH;

[0543] a second indication, where the second indication is used to indicate a time domain position of the target sidelink reference signal and / or a time domain position of a PSCCH associated with the target sidelink reference signal;

[0544] a third indication, the third indication being used to indicate a time domain position of the target sidelink reference signal;

[0545] a fourth indication, where the fourth indication is used to indicate a resource pool to which the target sidelink reference signal belongs;

[0546] a fifth indication, the fifth indication being used to indicate a frequency domain position of a corresponding sidelink reference signal in at least one reserved time slot;

[0547] A sixth indication, where the sixth indication is used to indicate a frequency domain position of a corresponding PSCCH on at least one reserved time slot;

[0548] a seventh indication, the seventh indication being used to indicate a time interval between a time slot where a start transmission resource of the target sidelink reference signal is located and a time slot where the downlink control information is located;

[0549] An eighth indication, wherein the eighth indication is used to indicate the time-frequency position of the target sidelink reference signal and / or the PSCCH in the first time slot of the candidate resource, and / or the time-frequency position of the target sidelink reference signal and / or the PSCCH in other time slots of the candidate resource;

[0550] A ninth indication, wherein the ninth indication is used to indicate a sending period of the target sidelink reference signal.

[0551] Optionally, the resource indication information includes the first indication, the first indication occupies X bits, and a value of X includes at least one of the following:

[0552] A value determined according to resource information configured by high-level information;

[0553] The value specified by the protocol.

[0554] Optionally, the resource information configured by the high-level information includes at least one of the following:

[0555] The high-level information configures a threshold for the comb size;

[0556] The maximum value of the comb size of the high-level information configuration;

[0557] The comb size of the high-level information configuration;

[0558] The maximum number of resources of the sidelink reference signal configured by the high-level information;

[0559] The maximum number of PSCCH resources configured by the high-level information.

[0560] Optionally, the resource indication information includes the second indication, the second indication occupies Y1 bits, and a value of Y1 includes at least one of the following:

[0561] a preset first value;

[0562] A second value, where the second value is a value determined according to the time domain resource information configured by the high-level information;

[0563] The product of a first parameter and the first value or the second value, the first parameter is determined according to the candidate time domain resource information corresponding to the target sidelink reference signal.

[0564] Optionally, the time domain resource information configured by the high-level information includes at least one of the following:

[0565] The high-layer information is for a maximum configuration threshold of the number of candidate starting symbols;

[0566] The high-layer information is a difference between a maximum configuration threshold of the number of symbols and a second parameter;

[0567] a ratio of a maximum configuration threshold for the number of symbols in the high-layer information to the second parameter;

[0568] The second parameter includes at least one of the following:

[0569] A minimum configuration threshold of the number of symbols occupied by the target sidelink reference signal;

[0570] A maximum configuration threshold of the number of symbols occupied by the target sidelink reference signal;

[0571] The minimum number of symbols configured by the high-level information;

[0572] The maximum number of symbols configured by the high-level information.

[0573] Optionally, the candidate time domain resource information includes at least one of the following:

[0574] The high-level information is for a maximum configuration threshold of the number of candidate time-domain positions;

[0575] The high-layer information includes a minimum configuration threshold for the number of symbols occupied by the target sidelink reference signal, and the number of symbols occupied by the target sidelink reference signal;

[0576] The maximum number of candidate positions configured by the high-level information;

[0577] The high-layer information includes a minimum number of symbols configured for the target sidelink reference signal and a number of symbols occupied by the target sidelink reference signal.

[0578] Optionally, when the value of Y1 is equal to the product of the first parameter and the first numerical value or the second numerical value, and the product of the first parameter and the first numerical value or the second numerical value is a preset code point, the time domain starting position of the target sidelink reference signal is a default candidate position.

[0579] Optionally, the resource indication information includes the third indication, the third indication occupies Y2 bits, and the value of Y2 is determined according to the time domain resource information corresponding to the target sidelink reference signal.

[0580] Optionally, the resource indication information includes a fourth indication, and the fourth indication includes at least one of the following:

[0581] The fourth indication is used to indicate whether the resource pool to which the target transmission resource belongs is a dedicated resource pool or a shared resource pool;

[0582] The fourth indication is used to indicate identification information of the dedicated resource pool to which the target transmission resource belongs.

[0583] Optionally, the fourth instruction includes at least one of the following:

[0584] In a case where the fourth indication is a preset resource element offset code point, the fourth indication is used to indicate that the resource pool to which the target transmission resource belongs is a shared resource pool;

[0585] In a case where the fourth indication is a preset time domain position code point, the fourth indication is used to indicate that the resource pool to which the target transmission resource belongs is a shared resource pool.

[0586] Optionally, before the network side device sends the downlink control information to the first terminal, the method further includes:

[0587] The network side device receives first request information sent by the first terminal, where the first request information is used to request transmission resources of the target sidelink reference signal.

[0588] Optionally, the first request information and the target sidelink reference signal have the same priority.

[0589] Optionally, the first request information includes at least one of the following:

[0590] The destination identifier or source address identifier associated with the target sidelink reference signal

[0591] Synchronization source information of a target terminal; the target terminal is a terminal device that sends the target sidelink reference signal;

[0592] Resource configuration indication information; the resource configuration indication information is used to pre-configure the transmission resources of the target sidelink reference signal.

[0593] Optionally, the target terminal includes at least one of the following:

[0594] the first terminal;

[0595] a terminal device for positioning with the first terminal;

[0596] a terminal device that establishes a unicast connection with the first terminal;

[0597] A terminal device having the same destination address as the first terminal.

[0598] Optionally, the resource configuration indication information includes at least one of the following:

[0599] identification information of candidate resources of the target sidelink reference signal desired by the target terminal;

[0600] The frequency domain resource size desired by the target terminal for transmitting the target sidelink reference signal;

[0601] A resource pool desired by the target terminal for transmitting the target sidelink reference signal;

[0602] A resource period of the target sidelink reference signal expected by the target terminal;

[0603] The target terminal expects an expected number of retransmissions of the target sidelink reference signal within a resource period.

[0604] Optionally, the target terminal includes at least two terminal devices.

[0605] Optionally, the method further comprises:

[0606] The network side device sends second information to the first terminal, where the second information is used to indicate a target transmission resource corresponding to the target terminal and / or a mapping relationship between the target transmission resource and the target terminal.

[0607] When there are multiple senders of the target bypass reference signal, the network side device can indicate the target transmission resource corresponding to the target terminal and / or the mapping relationship between the target transmission resource and the target terminal to the first terminal through the second information.

[0608] The resource determination method provided in the embodiment of the present application may be executed by a resource determination device. In the embodiment of the present application, the resource determination device provided in the embodiment of the present application is described by taking the resource determination method executed by the resource determination device as an example.

[0609] In a fifth aspect, an embodiment of the present application provides a resource determination device. Fig.11 , shows a structural block diagram of a resource determination device provided in an embodiment of the present application, which can be applied to a first terminal. Fig.11 As shown, the device may specifically include:

[0610] The resource indication information determining module 501 is used to determine the resource indication information according to the first information or the received downlink control information;

[0611] The resource indication information is used to determine, from pre-configured candidate resources, a transmission resource of a target sidelink reference signal and / or a resource of a physical sidelink control channel PSCCH associated with the target sidelink reference signal.

[0612] Optionally, the PSCCH resource includes at least one of the following:

[0613] The time-frequency position of the PSCCH;

[0614] The code division resources of the PSCCH;

[0615] The PSCCH is associated with a demodulation reference signal DMRS.

[0616] Optionally, the resource indication information includes at least one of the following:

[0617] A first indication, where the first indication is used to indicate a resource element offset of the target sidelink reference signal, and / or a resource identifier of the target sidelink reference signal, and / or a resource identifier of the PSCCH;

[0618] a second indication, where the second indication is used to indicate a time domain position of the target sidelink reference signal and / or a time domain position of a PSCCH associated with the target sidelink reference signal;

[0619] a third indication, the third indication being used to indicate a time domain position of the target sidelink reference signal;

[0620] a fourth indication, where the fourth indication is used to indicate a resource pool to which the target sidelink reference signal belongs;

[0621] a fifth indication, the fifth indication being used to indicate a time-frequency position or a resource identifier of the target sidelink reference signal in at least one reserved time slot;

[0622] A sixth indication, the sixth indication being used to indicate a frequency domain position of the PSCCH on at least one reserved time slot;

[0623] a seventh indication, the seventh indication being used to indicate a time interval between a time slot where a start transmission resource of the target sidelink reference signal is located and a time slot where the downlink control information is located;

[0624] An eighth indication, wherein the eighth indication is used to indicate the time-frequency position of the target sidelink reference signal and / or the PSCCH in the first time slot of the candidate resource, and / or the time-frequency position of the target sidelink reference signal and / or the PSCCH in other time slots of the candidate resource;

[0625] A ninth indication, wherein the ninth indication is used to indicate a sending period of the target sidelink reference signal.

[0626] Optionally, the resource indication information includes the first indication, the first indication occupies X bits, and a value of X includes at least one of the following:

[0627] A value determined according to resource information configured by high-level information;

[0628] The value specified by the protocol.

[0629] Optionally, the resource information configured by the high-level information includes at least one of the following:

[0630] The high-level information configures a threshold for the comb size;

[0631] The maximum value of the comb size of the high-level information configuration;

[0632] The comb size of the high-level information configuration;

[0633] The maximum number of resources of the sidelink reference signal configured by the high-level information;

[0634] The maximum number of PSCCH resources configured by the high-level information.

[0635] Optionally, the resource indication information includes the second indication, the second indication occupies Y1 bits, and a value of Y1 includes at least one of the following:

[0636] a preset first value;

[0637] A second value, where the second value is a value determined according to the time domain resource information configured by the high-level information;

[0638] The product of a first parameter and the first value or the second value, the first parameter is determined according to the candidate time domain resource information corresponding to the target sidelink reference signal.

[0639] Optionally, the time domain resource information configured by the high-level information includes at least one of the following:

[0640] The high-layer information is for a maximum configuration threshold of the number of candidate starting symbols;

[0641] The high-layer information is a difference between a maximum configuration threshold of the number of symbols and a second parameter;

[0642] a ratio of a maximum configuration threshold for the number of symbols in the high-layer information to the second parameter;

[0643] The second parameter includes at least one of the following:

[0644] A minimum configuration threshold of the number of symbols occupied by the target sidelink reference signal;

[0645] A maximum configuration threshold of the number of symbols occupied by the target sidelink reference signal;

[0646] The minimum number of symbols configured by the high-level information;

[0647] The maximum number of symbols configured by the high-level information.

[0648] Optionally, the candidate time domain resource information includes at least one of the following:

[0649] The high-level information is for a maximum configuration threshold of the number of candidate time-domain positions;

[0650] The high-layer information includes a minimum configuration threshold for the number of symbols occupied by the target sidelink reference signal, and the number of symbols occupied by the target sidelink reference signal;

[0651] The maximum number of candidate positions configured by the high-level information;

[0652] The high-layer information includes a minimum number of symbols configured for the target sidelink reference signal and a number of symbols occupied by the target sidelink reference signal.

[0653] Optionally, when the value of Y1 is equal to the product of the first parameter and the first numerical value or the second numerical value, and the product of the first parameter and the first numerical value or the second numerical value is a preset code point, the time domain starting position of the target sidelink reference signal is a default candidate position.

[0654] Optionally, the resource indication information includes the third indication, the third indication occupies Y2 bits, and the value of Y2 is determined according to the time domain resource information corresponding to the target sidelink reference signal.

[0655] Optionally, the resource indication information includes a fourth indication, and the fourth indication includes at least one of the following:

[0656] The fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a dedicated resource pool or a shared resource pool;

[0657] The fourth indication is used to indicate identification information of a dedicated resource pool to which the target sidelink reference signal belongs.

[0658] Optionally, the fourth instruction includes at least one of the following:

[0659] In a case where the fourth indication is a preset resource element offset code point, the fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a shared resource pool;

[0660] In a case where the fourth indication is a preset time domain position code point, the fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a shared resource pool.

[0661] Optionally, the device further comprises:

[0662] A request information sending module, used to send first request information to a network side device; the first request information is used to request a transmission resource of the target sidelink reference signal;

[0663] The resource indication information determining module includes:

[0664] A receiving submodule, used to receive downlink control information sent by the network side device;

[0665] The first determining submodule is used to determine first resource indication information according to the downlink control information.

[0666] Optionally, the triggering object of the first request information includes at least one of the following:

[0667] Control unit of the media access control layer;

[0668] a buffer status report associated with the target sidelink reference signal;

[0669] Sidelink reference signal to be transmitted.

[0670] Optionally, the first request information and the target sidelink reference signal have the same priority.

[0671] Optionally, the first request information includes at least one of the following:

[0672] The destination identifier or source address identifier associated with the target sidelink reference signal

[0673] Synchronization source information of a target terminal; the target terminal is a terminal device that sends the target sidelink reference signal;

[0674] Resource configuration indication information; the resource configuration indication information is used to pre-configure the transmission resources of the target sidelink reference signal.

[0675] Optionally, the target terminal includes at least one of the following:

[0676] the first terminal;

[0677] a terminal device for positioning with the first terminal;

[0678] a terminal device that establishes a unicast connection with the first terminal;

[0679] A terminal device having the same destination address as the first terminal.

[0680] Optionally, the resource configuration indication information includes at least one of the following:

[0681] identification information of candidate resources of the target sidelink reference signal desired by the target terminal;

[0682] The frequency domain resource size desired by the target terminal for transmitting the target sidelink reference signal;

[0683] A resource pool desired by the target terminal for transmitting the target sidelink reference signal;

[0684] A resource period of the target sidelink reference signal expected by the target terminal;

[0685] The target terminal expects an expected number of retransmissions of the target sidelink reference signal within a resource period.

[0686] Optionally, the device further comprises:

[0687] The first sidelink information receiving module is used to receive first sidelink control information sent by a second terminal, where the first sidelink control information is used to request a transmission resource of the target sidelink reference signal; the second terminal is the target terminal other than the first terminal.

[0688] Optionally, the device further comprises:

[0689] A resource determination module, configured to determine a target transmission resource of the target sidelink reference signal from the candidate resources according to the resource indication information;

[0690] The second resource indication information sending module is used to send second resource indication information to the second terminal, where the second resource indication information is used to indicate the target transmission resource of the target sidelink reference signal.

[0691] Optionally, the device further comprises:

[0692] The first resource indication information sending module is used to send the first resource indication information to the second terminal.

[0693] Optionally, the target terminal includes at least two terminal devices.

[0694] Optionally, the device further comprises:

[0695] The second information receiving module is used to receive second information sent by the network side device, where the second information is used to indicate the target transmission resource corresponding to the target terminal and / or the mapping relationship between the target transmission resource and the target terminal.

[0696] Optionally, the device further comprises:

[0697] A third resource indication information sending module is used to generate third resource indication information according to the mapping relationship between the target transmission resource and the target terminal, and send the third resource indication information to the second terminal; the third resource indication information is used to indicate the target transmission resource corresponding to the second terminal; the second terminal is the target terminal other than the first terminal.

[0698] Optionally, the device further comprises:

[0699] a sending module, configured to send the target sidelink reference signal and sidelink control information associated with the target sidelink reference signal to a third terminal;

[0700] The target sidelink reference signal and the sidelink control information associated with the target sidelink reference signal are in the same time slot.

[0701] Optionally, the first information includes channel busy information and a transmission parameter of a sidechain reference signal associated with the channel busy information; and the resource indication information determination module includes:

[0702] A transmission parameter determination submodule, configured to determine target channel busy information, and determine a transmission parameter of the target sidelink reference signal based on the first information; the transmission parameter of the target sidelink reference signal is associated with the target channel busy information;

[0703] The second determining submodule is used to determine resource indication information according to the transmission parameter.

[0704] Optionally, the target channel busy information is determined according to third information, and the third information includes at least one of the following:

[0705] a ratio of sidelink reference signals whose received signal strength indication RSSI exceeds a first threshold within a channel busy rate measurement window;

[0706] The total number of resources of candidate sidelink reference signals within the channel busy rate measurement window;

[0707] The sidelink reference signal resource to be measured within the channel busy rate measurement window.

[0708] Optionally, the total number of resources of the candidate side link reference signal in the channel busy rate measurement window is determined according to a third parameter and a fourth parameter; the third parameter is used to indicate the total number of resources of the candidate side link reference signal in the time slot, and the fourth parameter is used to indicate the time slot length of the channel busy rate measurement window;

[0709] The third parameter includes at least one of the following:

[0710] a maximum number of resources of the candidate sidelink reference signals in a time slot;

[0711] The maximum number of PSCCH resources associated with the candidate sidelink reference signal in a time slot;

[0712] The comb size corresponding to the candidate sidelink reference signal;

[0713] The comb size corresponding to the candidate sidelink reference signal and the maximum number of candidate time domain resources of the candidate sidelink reference signal in a time slot.

[0714] Optionally, the sidelink reference signal resource to be measured in the channel busy rate measurement window includes at least one of the following:

[0715] Resources of all candidate sidelink reference signals within the channel busy rate measurement window;

[0716] Candidate sidelink reference signal resources that are mapped to PSCCH resources within the channel busy rate measurement window;

[0717] Sidelink reference signal resources within the channel busy rate measurement window and preconfigured in a resource pool;

[0718] All PSCCH resources within the channel busy rate measurement window.

[0719] Optionally, the transmission parameter of the target sidelink reference signal satisfies at least one of the following:

[0720] The number of retransmissions corresponding to the target sidelink reference signal is less than or equal to a first number of retransmissions, where the first number of retransmissions is a maximum number of retransmissions of the sidelink reference signal determined in the first information according to the target channel busy information;

[0721] The transmission power of the target sidelink reference signal is less than or equal to a first transmission power, where the first transmission power is a maximum transmission power of the sidelink reference signal determined in the first information according to the target channel busy information;

[0722] The transmission period of the target sidelink reference signal is greater than or equal to a first transmission period, where the first transmission period is a maximum transmission period of the sidelink reference signal determined in the first information according to the target channel busy information;

[0723] The resource pool bandwidth of the transmission resource of the target sidelink reference signal is smaller than a preset range, where the preset range is the maximum bandwidth of the sidelink reference signal determined in the first information according to the target channel busy information.

[0724] Optionally, the resource indication information includes at least one of the following:

[0725] Resource pool indication information, used to indicate the resource pool to which the transmission resource of the target sidelink reference signal belongs;

[0726] Frequency domain resource indication information of the target sidelink reference signal;

[0727] a transmission period of the target sidelink reference signal;

[0728] The number of retransmissions of the target sidelink reference signal.

[0729] Optionally, the first information or the downlink control information includes at least one of the following:

[0730] first mapping information, where the first mapping information is used to indicate that a candidate time-frequency position of the PSCCH is associated with at least one code division resource of the PSCCH;

[0731] Second mapping information, where the second mapping information is used to indicate that one candidate time-frequency position of the PSCCH is associated with at least two candidate sidelink reference signal resources.

[0732] Optionally, the code division resources of the PSCCH include identification information or indication information of a cyclic shift parameter of a demodulation reference signal of the PSCCH.

[0733] Optionally, in a case where one candidate time-frequency position of the PSCCH is associated with at least two candidate sidelink reference signal resources, the candidate time-frequency position of the PSCCH is associated with at least two code division resources of the PSCCH.

[0734] Optionally, when the candidate time-frequency position of the PSCCH is associated with at least two code division resources of the PSCCH, the code division resources of the PSCCH satisfy at least one of the following:

[0735] The code division resource of the PSCCH is associated with a cyclic shift parameter of a demodulation reference signal of the PSCCH;

[0736] The code division resources and time-frequency positions of the PSCCH are mapped one-to-one with the candidate sidelink reference signal resources;

[0737] The code division resources and time-frequency positions of the PSCCH are mapped many-to-one with candidate sidelink reference signal resources;

[0738] The code division resource of the PSCCH is mapped to one candidate sidelink reference signal resource of the at least two candidate sidelink reference signal resources.

[0739] Optionally, the number of candidate sidelink reference signal resources associated with the candidate time-frequency positions of the PSCCH is less than or equal to a preset number.

[0740] Optionally, the PSCCH resource includes at least one of the following:

[0741] The time-frequency position of the PSCCH and the code division resources of the PSCCH;

[0742] The time-frequency position of the PSCCH and the cyclic shift parameter of the demodulation reference signal of the PSCCH.

[0743] Optionally, the first information or the downlink control information further includes at least one of the following:

[0744] Indication information of the time-frequency position of the PSCCH;

[0745] Indication information of the code division resources of the PSCCH;

[0746] The identification information of the PSCCH.

[0747] Optionally, the first information includes second sidelink control information, and the resource indication information determining module includes:

[0748] The third determining submodule is configured to determine resource indication information according to the received second sidelink control information.

[0749] Optionally, the device further comprises:

[0750] A resource determination module, configured for the first terminal to determine a target transmission resource of the target sidelink reference signal according to the resource indication information;

[0751] A sidelink reference signal sending module is used to send the target sidelink reference signal according to the target transmission resource.

[0752] Optionally, the device further comprises:

[0753] A configuration module, configured to configure a control resource set and / or a search space according to high-level information;

[0754] A detection module is used to detect the downlink control information according to the control resource set and / or the search space, where the downlink control information is used to schedule the target sidelink reference signal or the positioning information associated with the target sidelink reference signal.

[0755] Optionally, in a case where a physical sidelink shared channel PSSCH is included in the time slot of the target transmission resource, the apparatus further comprises:

[0756] a time-frequency position determination module, configured to determine the time-frequency position of the second-level sidelink control information; and / or,

[0757] The transport block size determination module is used to determine the transport block size used to transmit the PSSCH.

[0758] Optionally, the transport block size determination module includes:

[0759] A resource element determination submodule, used to determine the resource element used to transmit the PSSCH;

[0760] The number of resource elements is determined according to third information, and the third information includes:

[0761] The number of subcarriers in a physical resource block;

[0762] The number of symbols used for the sidelink in one time slot;

[0763] The number of symbols occupied by the physical sidelink feedback channel PSFCH;

[0764] The number of symbols occupied by the sidelink reference signal;

[0765] The number of resource elements occupied by the phase tracking reference signal and the channel state information reference signal;

[0766] The number of resource elements occupied by the demodulation reference signal in a time slot.

[0767] Optionally, the second-level sidelink control information is mapped to the PSSCH.

[0768] Optionally, the starting symbol mapped to the second-level sidelink control information is the symbol of the first demodulation reference signal of the PSSCH, and the second-level sidelink control information includes data transmission type indication information of the second-level sidelink control information.

[0769] Optionally, the number of coded modulation symbols of the second-level sidelink control information is related to the number of symbols used to transmit PSSCH in the time slot; the number of symbols used to transmit PSSCH in the time slot is related to the number of symbols occupied by the sidelink reference signal in the time slot.

[0770] Optionally, when the first-level sidelink control information indicates that the second-level sidelink control information is 2-D, the number of symbols used to transmit PSSCH in the time slot is related to the number of symbols occupied by the sidelink reference signal in the time slot.

[0771] Optionally, the number of symbols occupied by the sidelink reference signal in the time slot includes at least one of the following:

[0772] The number of symbols configured by the higher layer;

[0773] The number of symbols preconfigured by the network-side device or protocol;

[0774] The number of symbols is determined according to the mode of the demodulation reference signal indicated by the first-level sidelink reference signal.

[0775] Optionally, the resource indication information is further used to indicate at least one of the following:

[0776] The target sidelink signal supports resource multiplexing in a time division multiplexing manner within a time slot;

[0777] The target sidelink signal supports resource multiplexing in a frequency domain in a frequency division multiplexing manner.

[0778] In a sixth aspect, an embodiment of the present application provides a resource determination device. Fig.12 , shows a structural block diagram of a resource determination device provided in an embodiment of the present application, which can be applied to a second terminal. Fig.12 As shown, the device may specifically include:

[0779] A first sending module 601 is configured to send first sidelink control information to a first terminal, where the first sidelink control information is used to request a transmission resource of a target sidelink reference signal; or

[0780] A second sending module 602 is configured to send second sidelink control information to the first terminal, where the second sidelink control information is used to schedule the target sidelink reference signal or positioning information associated with the target sidelink reference signal;

[0781] The second sidelink control information carries resource indication information, and the resource indication information is used to determine the transmission resources of the target sidelink reference signal and / or the resources of the physical sidelink control channel PSCCH associated with the target sidelink reference signal from pre-configured candidate resources.

[0782] Optionally, the PSCCH resource includes at least one of the following:

[0783] The time-frequency position of the PSCCH;

[0784] The code division resources of the PSCCH;

[0785] The PSCCH is associated with a demodulation reference signal DMRS.

[0786] Optionally, the resource indication information includes at least one of the following:

[0787] A first indication, where the first indication is used to indicate a resource element offset of the target sidelink reference signal, and / or a resource identifier of the target sidelink reference signal, and / or a resource identifier of the PSCCH;

[0788] a second indication, where the second indication is used to indicate a time domain position of the target sidelink reference signal and / or a time domain position of a PSCCH associated with the target sidelink reference signal;

[0789] a third indication, the third indication being used to indicate a time domain position of the target sidelink reference signal;

[0790] a fourth indication, where the fourth indication is used to indicate a resource pool to which the target sidelink reference signal belongs;

[0791] a fifth indication, the fifth indication being used to indicate a time-frequency position or a resource identifier of the target sidelink reference signal in at least one reserved time slot;

[0792] A sixth indication, the sixth indication being used to indicate a frequency domain position of the PSCCH on at least one reserved time slot;

[0793] a seventh indication, the seventh indication being used to indicate a time interval between a time slot where a start transmission resource of the target sidelink reference signal is located and a time slot where the downlink control information is located;

[0794] An eighth indication, wherein the eighth indication is used to indicate the time-frequency position of the target sidelink reference signal and / or the PSCCH in the first time slot of the candidate resource, and / or the time-frequency position of the target sidelink reference signal and / or the PSCCH in other time slots of the candidate resource;

[0795] A ninth indication, wherein the ninth indication is used to indicate a sending period of the target sidelink reference signal.

[0796] Optionally, the resource indication information includes the first indication, the first indication occupies X bits, and a value of X includes at least one of the following:

[0797] A value determined according to resource information configured by high-level information;

[0798] The value specified by the protocol.

[0799] Optionally, the resource information configured by the high-level information includes at least one of the following:

[0800] The high-level information configures a threshold for the comb size;

[0801] The maximum value of the comb size of the high-level information configuration;

[0802] The comb size of the high-level information configuration;

[0803] The maximum number of resources of the sidelink reference signal configured by the high-level information;

[0804] The maximum number of PSCCH resources configured by the high-level information.

[0805] Optionally, the resource indication information includes the second indication, the second indication occupies Y1 bits, and a value of Y1 includes at least one of the following:

[0806] a preset first value;

[0807] A second value, where the second value is a value determined according to the time domain resource information configured by the high-level information;

[0808] The product of a first parameter and the first value or the second value, the first parameter is determined according to the candidate time domain resource information corresponding to the target sidelink reference signal.

[0809] Optionally, the resource indication information includes the third indication, the third indication occupies Y2 bits, and the value of Y2 is determined according to the time domain resource information corresponding to the target sidelink reference signal.

[0810] Optionally, the resource indication information includes a fourth indication, and the fourth indication includes at least one of the following:

[0811] The fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a dedicated resource pool or a shared resource pool;

[0812] The fourth indication is used to indicate identification information of a dedicated resource pool to which the target sidelink reference signal belongs.

[0813] Optionally, the fourth instruction includes at least one of the following:

[0814] In a case where the fourth indication is a preset resource element offset code point, the fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a shared resource pool;

[0815] In a case where the fourth indication is a preset time domain position code point, the fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a shared resource pool.

[0816] Optionally, the device further comprises:

[0817] A first resource indication information receiving module, configured to receive first resource indication information sent by the first terminal; the first resource indication information is resource indication information determined based on downlink control information, and the downlink control information is used to schedule the target sidelink reference signal or the positioning information corresponding to the target sidelink reference signal;

[0818] The first transmission module is used to determine a target transmission resource according to the first resource indication information, and send the target sidelink reference signal based on the target transmission resource.

[0819] Optionally, the device further comprises:

[0820] A second resource indication information receiving module, configured to receive second resource indication information sent by the first terminal, where the second resource indication information is used to indicate a target transmission resource of the target sidelink reference signal;

[0821] The second transmission module is used to send the target sidelink reference signal based on the target transmission resource indicated by the second resource indication information.

[0822] Optionally, the device further comprises:

[0823] A second resource indication information receiving module, used to receive third resource indication information sent by the first terminal, wherein the third resource indication information is used to indicate a target transmission resource corresponding to the second terminal;

[0824] The third transmission module is used to send the target sidelink reference signal based on the target transmission resource indicated by the third resource indication information.

[0825] In a seventh aspect, an embodiment of the present application provides a resource determination device. Fig.13 , shows a structural block diagram of a resource determination device provided in an embodiment of the present application, which can be applied to a third terminal. Fig.13 As shown, the device may specifically include:

[0826] A resource indication information sending module 701 is configured to send target resource indication information to a higher layer by the physical layer of the third terminal when a target sidelink reference signal and sidelink control information associated with the target sidelink reference signal sent by the first terminal are received in the same time slot;

[0827] A sidelink reference signal sending module 702, configured to send a first sidelink reference signal according to the target resource indication information;

[0828] The target resource indication information includes at least one of the following:

[0829] A source address identifier associated with the target sidelink reference signal;

[0830] a destination address identifier associated with the target sidelink reference signal;

[0831] A sidelink reference signal request message associated with the target sidelink reference signal;

[0832] a propagation type of the target sidelink reference signal;

[0833] priority information of the target sidelink reference signal;

[0834] bandwidth information of the target sidelink reference signal;

[0835] The resource pool information of the target sidelink reference signal.

[0836] Optionally, the first sidelink reference signal sent by the third terminal has the same characteristic information as the target sidelink reference signal received by the third terminal; the characteristic information includes at least one of the following:

[0837] Priority information;

[0838] Resource pool information;

[0839] Bandwidth information;

[0840] Type of communication;

[0841] Destination address identifier.

[0842] In an eighth aspect, an embodiment of the present application provides a resource determination device. Fig.14 , shows a structural block diagram of a resource determination device provided in an embodiment of the present application, which can be applied to a network side device. Fig.14 As shown, the device may specifically include:

[0843] A downlink control information sending module 801 is used to send downlink control information to the first terminal, where the downlink control information carries resource indication information;

[0844] The resource indication information is used to determine, from pre-configured candidate resources, a transmission resource of a target sidelink reference signal and / or a resource of a physical sidelink control channel PSCCH associated with the target sidelink reference signal.

[0845] Optionally, the PSCCH resource includes at least one of the following:

[0846] The time-frequency position of the PSCCH;

[0847] The code division resources of the PSCCH;

[0848] The PSCCH is associated with a demodulation reference signal DMRS.

[0849] Optionally, the resource indication information includes at least one of the following:

[0850] A first indication, where the first indication is used to indicate a resource element offset of the target sidelink reference signal, and / or a resource identifier of the target sidelink reference signal, and / or a resource identifier of the PSCCH;

[0851] a second indication, where the second indication is used to indicate a time domain position of the target sidelink reference signal and / or a time domain position of a PSCCH associated with the target sidelink reference signal;

[0852] a third indication, the third indication being used to indicate a time domain position of the target sidelink reference signal;

[0853] a fourth indication, where the fourth indication is used to indicate a resource pool to which the target sidelink reference signal belongs;

[0854] a fifth indication, the fifth indication being used to indicate a time-frequency position or a resource identifier of the target sidelink reference signal in at least one reserved time slot;

[0855] A sixth indication, the sixth indication being used to indicate a frequency domain position of the PSCCH on at least one reserved time slot;

[0856] a seventh indication, the seventh indication being used to indicate a time interval between a time slot where a start transmission resource of the target sidelink reference signal is located and a time slot where the downlink control information is located;

[0857] An eighth indication, wherein the eighth indication is used to indicate the time-frequency position of the target sidelink reference signal and / or the PSCCH in the first time slot of the candidate resource, and / or the time-frequency position of the target sidelink reference signal and / or the PSCCH in other time slots of the candidate resource;

[0858] A ninth indication, wherein the ninth indication is used to indicate a sending period of the target sidelink reference signal.

[0859] Optionally, the resource indication information includes the first indication, the first indication occupies X bits, and a value of X includes at least one of the following:

[0860] A value determined according to resource information configured by high-level information;

[0861] The value specified by the protocol.

[0862] Optionally, the resource information configured by the high-level information includes at least one of the following:

[0863] The high-level information configures a threshold for the comb size;

[0864] The maximum value of the comb size of the high-level information configuration;

[0865] The comb size of the high-level information configuration;

[0866] The maximum number of resources of the sidelink reference signal configured by the high-level information;

[0867] The maximum number of PSCCH resources configured by the high-level information.

[0868] Optionally, the resource indication information includes the second indication, the second indication occupies Y1 bits, and a value of Y1 includes at least one of the following:

[0869] a preset first value;

[0870] A second value, where the second value is a value determined according to the time domain resource information configured by the high-level information;

[0871] The product of a first parameter and the first value or the second value, the first parameter is determined according to the candidate time domain resource information corresponding to the target sidelink reference signal.

[0872] Optionally, the resource indication information includes the third indication, the third indication occupies Y2 bits, and the value of Y2 is determined according to the time domain resource information corresponding to the target sidelink reference signal.

[0873] Optionally, the resource indication information includes a fourth indication, and the fourth indication includes at least one of the following:

[0874] The fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a dedicated resource pool or a shared resource pool;

[0875] The fourth indication is used to indicate identification information of a dedicated resource pool to which the target sidelink reference signal belongs.

[0876] Optionally, the fourth instruction includes at least one of the following:

[0877] In a case where the fourth indication is a preset resource element offset code point, the fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a shared resource pool;

[0878] In a case where the fourth indication is a preset time domain position code point, the fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a shared resource pool.

[0879] Optionally, the device further comprises:

[0880] The request information receiving module is used to receive first request information sent by the first terminal, where the first request information is used to request transmission resources of the target sidelink reference signal.

[0881] Optionally, the first request information and the target sidelink reference signal have the same priority.

[0882] Optionally, the first request information includes at least one of the following:

[0883] The destination identifier or source address identifier associated with the target sidelink reference signal

[0884] Synchronization source information of a target terminal; the target terminal is a terminal device that sends the target sidelink reference signal;

[0885] Resource configuration indication information; the resource configuration indication information is used to pre-configure the transmission resources of the target sidelink reference signal.

[0886] Optionally, the target terminal includes at least one of the following:

[0887] the first terminal;

[0888] a terminal device for positioning with the first terminal;

[0889] a terminal device that establishes a unicast connection with the first terminal;

[0890] A terminal device having the same destination address as the first terminal.

[0891] Optionally, the resource configuration indication information includes at least one of the following:

[0892] identification information of candidate resources of the target sidelink reference signal desired by the target terminal;

[0893] The frequency domain resource size desired by the target terminal for transmitting the target sidelink reference signal;

[0894] A resource pool desired by the target terminal for transmitting the target sidelink reference signal;

[0895] A resource period of the target sidelink reference signal expected by the target terminal;

[0896] The target terminal expects an expected number of retransmissions of the target sidelink reference signal within a resource period.

[0897] Optionally, the target terminal includes at least two terminal devices.

[0898] Optionally, the device further comprises:

[0899] The second information sending module is used to send second information to the first terminal, where the second information is used to indicate the target transmission resource corresponding to the target terminal and / or the mapping relationship between the target transmission resource and the target terminal.

[0900] Optionally, the downlink control information further includes at least one of the following:

[0901] Indication information of the time-frequency position of the PSCCH;

[0902] Indication information of the code division resources of the PSCCH;

[0903] The identification information of the PSCCH.

[0904] Optionally, the resource indication information is further used to indicate at least one of the following:

[0905] The target sidelink signal supports resource multiplexing in a time division multiplexing manner within a time slot;

[0906] The target sidelink signal supports resource multiplexing in a frequency domain in a frequency division multiplexing manner.

[0907] The resource determination device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in the electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal device. Exemplarily, the terminal device may include but is not limited to the types of terminal devices 11 listed above.

[0908] The resource determination device provided in the embodiment of the present application can implement the various processes implemented in the aforementioned method embodiment and achieve the same technical effect. To avoid repetition, it will not be described here.

[0909] Optional, such as Fig.15 As shown, the embodiment of the present application further provides a communication device 900, including a processor 901 and a memory 902, and the memory 902 stores a program or instruction that can be run on the processor 901. For example, when the communication device 900 is a network side device, the program or instruction is executed by the processor 901 to implement the various steps of the resource determination method embodiment described in the fourth aspect above, and can achieve the same technical effect. When the communication device 900 is a terminal device, the program or instruction is executed by the processor 901 to implement the various steps of the resource determination method embodiment described in the first aspect, the second aspect, or the third aspect above, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0910] like Fig.16 , which is a schematic diagram of the hardware structure of a terminal device implementing an embodiment of the present application.

[0911] The terminal device 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009 and at least some of the components of the processor 1010.

[0912] Those skilled in the art will appreciate that the terminal device 1000 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 1010 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Fig.16 The terminal device structure shown in the figure does not constitute a limitation on the terminal device. The terminal device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0913] It should be understood that in the embodiment of the present application, the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042, and the graphics processor 10041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include two parts: a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0914] In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 1001 can transmit the data to the processor 1010 for processing; in addition, the RF unit 1001 can send uplink data to the network side device. Generally, the RF unit 1001 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0915] The memory 1009 can be used to store software programs or instructions and various data. The memory 1009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 1009 may include a volatile memory or a non-volatile memory, or the memory 1009 may include both volatile and non-volatile memories. Among them, 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), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 1009 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0916] The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1010.

[0917] The embodiment of the present application also provides a network side device, including a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run a program or instruction to implement the steps of the method embodiment of the fourth aspect. The network side device embodiment corresponds to the above network side device method embodiment, and each implementation process and implementation method of the above method embodiment can be applied to the network side device embodiment and can achieve the same technical effect.

[0918] Specifically, the embodiment of the present application also provides a network side device, such as Fig.17 As shown, the network side device 1100 includes: an antenna 111, a radio frequency device 112, a baseband device 113, a processor 114 and a memory 115. The antenna 111 is connected to the radio frequency device 112. In the uplink direction, the radio frequency device 112 receives information through the antenna 111 and sends the received information to the baseband device 113 for processing. In the downlink direction, the baseband device 113 processes the information to be sent and sends it to the radio frequency device 112, and the radio frequency device 112 processes the received information and sends it out through the antenna 111.

[0919] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 113, which includes a baseband processor.

[0920] The baseband device 113 may include, for example, at least one baseband board on which a plurality of chips are arranged. Fig.13 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 115 through a bus interface to call the program in the memory 115 to execute the network device operations shown in the above method embodiment.

[0921] The network side device may further include a network interface 116, which is, for example, a common public radio interface (CPRI).

[0922] Specifically, the network side device 1100 of the embodiment of the present invention also includes: instructions or programs stored in the memory 115 and executable on the processor 114. The processor 114 calls the instructions or programs in the memory 115 to execute the methods executed by each module in the aforementioned device embodiment and achieve the same technical effect. To avoid repetition, they will not be described here.

[0923] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned resource determination method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0924] The processor is the processor in the terminal device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

[0925] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned resource determination method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0926] 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.

[0927] The embodiment of the present application further provides a computer program / program product, which is stored in a storage medium, and is executed by at least one processor to implement the various processes of the above-mentioned resource determination method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0928] An embodiment of the present application also provides a resource determination system, including: a terminal device and a network side device, wherein the terminal can be used to execute the steps of the resource determination method described in the second aspect above, and the network side device can be used to execute the steps of the resource determination method described in the first aspect above.

[0929] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0930] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0931] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A resource determination method, characterized in that: include: The first terminal determines resource indication information according to the first information or the received downlink control information; The resource indication information is used to determine, from pre-configured candidate resources, a transmission resource of a target sidelink reference signal and / or a resource of a physical sidelink control channel PSCCH associated with the target sidelink reference signal.

2. The method according to claim 1, characterized in that The PSCCH resource includes at least one of the following: The time-frequency position of the PSCCH; The code division resources of the PSCCH; The PSCCH is associated with a demodulation reference signal DMRS.

3. The method according to claim 1, characterized in that The resource indication information includes at least one of the following: A first indication, where the first indication is used to indicate a resource element offset of the target sidelink reference signal, and / or a resource identifier of the target sidelink reference signal, and / or a resource identifier of the PSCCH; a second indication, where the second indication is used to indicate a time domain position of the target sidelink reference signal and / or a time domain position of a PSCCH associated with the target sidelink reference signal; a third indication, the third indication being used to indicate a time domain position of the target sidelink reference signal; a fourth indication, where the fourth indication is used to indicate a resource pool to which the target sidelink reference signal belongs; a fifth indication, the fifth indication being used to indicate a time-frequency position or a resource identifier of the target sidelink reference signal in at least one reserved time slot; A sixth indication, the sixth indication being used to indicate a frequency domain position of the PSCCH on at least one reserved time slot; a seventh indication, the seventh indication being used to indicate a time interval between a time slot where a start transmission resource of the target sidelink reference signal is located and a time slot where the downlink control information is located; An eighth indication, wherein the eighth indication is used to indicate the time-frequency position of the target sidelink reference signal and / or the PSCCH in the first time slot of the candidate resource, and / or the time-frequency position of the target sidelink reference signal and / or the PSCCH in other time slots of the candidate resource; A ninth indication, wherein the ninth indication is used to indicate a sending period of the target sidelink reference signal.

4. The method according to claim 3, characterized in that The resource indication information includes the first indication, where the first indication occupies X bits, and a value of X includes at least one of the following: A value determined according to resource information configured by high-level information; The value specified by the protocol.

5. The method according to claim 4, characterized in that The resource information configured by the high-level information includes at least one of the following: The high-level information configures a threshold for the comb size; The maximum value of the comb size of the high-level information configuration; The comb size of the high-level information configuration; The maximum number of resources of the sidelink reference signal configured by the high-level information; The maximum number of PSCCH resources configured by the high-level information.

6. The method according to claim 3, characterized in that The resource indication information includes the second indication, the second indication occupies Y1 bits, and the value of Y1 includes at least one of the following: a preset first value; A second value, where the second value is a value determined according to the time domain resource information configured by the high-level information; The product of a first parameter and the first value or the second value, the first parameter is determined according to the candidate time domain resource information corresponding to the target sidelink reference signal.

7. The method according to claim 6, characterized in that The time domain resource information configured by the high-level information includes at least one of the following: The high-layer information is for a maximum configuration threshold of the number of candidate starting symbols; The high-layer information is a difference between a maximum configuration threshold of the number of symbols and a second parameter; a ratio of a maximum configuration threshold for the number of symbols in the high-layer information to the second parameter; The second parameter includes at least one of the following: A minimum configuration threshold of the number of symbols occupied by the target sidelink reference signal; A maximum configuration threshold of the number of symbols occupied by the target sidelink reference signal; The minimum number of symbols configured by the high-level information; The maximum number of symbols configured by the high-level information.

8. The method according to claim 6, characterized in that The candidate time domain resource information includes at least one of the following: The high-level information is for a maximum configuration threshold of the number of candidate time-domain positions; The high-layer information includes a minimum configuration threshold for the number of symbols occupied by the target sidelink reference signal, and the number of symbols occupied by the target sidelink reference signal; The maximum number of candidate positions configured by the high-level information; The high-layer information includes a minimum number of symbols configured for the target sidelink reference signal and a number of symbols occupied by the target sidelink reference signal.

9. The method according to claim 6, characterized in that When the value of Y1 is equal to the product of the first parameter and the first numerical value or the second numerical value, and the product of the first parameter and the first numerical value or the second numerical value is a preset code point, the time domain starting position of the target sidelink reference signal is a default candidate position.

10. The method according to claim 3, characterized in that The resource indication information includes the third indication, the third indication occupies Y2 bits, and the value of Y2 is determined according to the time domain resource information corresponding to the target sidelink reference signal.

11. The method according to claim 3, characterized in that The resource indication information includes a fourth indication, and the fourth indication includes at least one of the following: The fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a dedicated resource pool or a shared resource pool; The fourth indication is used to indicate identification information of a dedicated resource pool to which the target sidelink reference signal belongs.

12. The method according to claim 3, characterized in that The fourth instruction includes at least one of the following: In a case where the fourth indication is a preset resource element offset code point, the fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a shared resource pool; In a case where the fourth indication is a preset time domain position code point, the fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a shared resource pool.

13. The method according to claim 1, characterized in that Before the first terminal determines the resource indication information according to the first information or the received downlink control information, the method further includes: The first terminal sends first request information to the network side device; the first request information is used to request the transmission resource of the target sidelink reference signal; The first terminal determines resource indication information according to the first information or the received downlink control information, including: The first terminal receives downlink control information sent by the network side device; The first terminal determines first resource indication information according to the downlink control information.

14. The method according to claim 13, characterized in that The trigger object of the first request information includes at least one of the following: Control unit of the media access control layer; a buffer status report associated with the target sidelink reference signal; Sidelink reference signal to be transmitted.

15. The method according to claim 13, characterized in that The first request information and the target sidelink reference signal have the same priority.

16. The method according to claim 13, characterized in that The first request information includes at least one of the following: The destination identifier or source address identifier associated with the target sidelink reference signal Synchronization source information of a target terminal; the target terminal is a terminal device that sends the target sidelink reference signal; Resource configuration indication information; the resource configuration indication information is used to pre-configure the transmission resources of the target sidelink reference signal.

17. The method according to claim 16, characterized in that The target terminal includes at least one of the following: the first terminal; a terminal device for positioning with the first terminal; a terminal device that establishes a unicast connection with the first terminal; A terminal device having the same destination address as the first terminal.

18. The method according to claim 16, characterized in that The resource configuration indication information includes at least one of the following: identification information of candidate resources of the target sidelink reference signal desired by the target terminal; The frequency domain resource size desired by the target terminal for transmitting the target sidelink reference signal; A resource pool desired by the target terminal for transmitting the target sidelink reference signal; A resource period of the target sidelink reference signal expected by the target terminal; The target terminal expects an expected number of retransmissions of the target sidelink reference signal within a resource period.

19. The method according to claim 16, characterized in that Before the first terminal sends the first request information to the network side device, the method further includes: The first terminal receives first sidelink control information sent by a second terminal, where the first sidelink control information is used to request a transmission resource of the target sidelink reference signal; the second terminal is the target terminal other than the first terminal.

20. The method according to claim 19, characterized in that The method further comprises: The first terminal determines, from the candidate resources, a target transmission resource of the target sidelink reference signal according to the resource indication information; The first terminal sends second resource indication information to the second terminal, where the second resource indication information is used to indicate a target transmission resource of the target sidelink reference signal.

21. The method according to claim 19, characterized in that The method further comprises: The first terminal sends the first resource indication information to the second terminal.

22. The method according to claim 16, characterized in that The target terminal includes at least two terminal devices.

23. The method according to claim 21, characterized in that The method further comprises: The first terminal receives second information sent by the network side device, where the second information is used to indicate a target transmission resource corresponding to the target terminal and / or a mapping relationship between the target transmission resource and the target terminal.

24. The method according to claim 23, characterized in that The method further comprises: The first terminal generates third resource indication information according to the mapping relationship between the target transmission resource and the target terminal, and sends the third resource indication information to the second terminal; the third resource indication information is used to indicate the target transmission resource corresponding to the second terminal; the second terminal is the target terminal other than the first terminal.

25. The method according to claim 1, characterized in that The method further comprises: The first terminal sends the target sidelink reference signal and sidelink control information associated with the target sidelink reference signal to a third terminal; The target sidelink reference signal and the sidelink control information associated with the target sidelink reference signal are in the same time slot.

26. The method according to claim 1, characterized in that The first information includes channel busy information and a transmission parameter of a sidelink reference signal associated with the channel busy information; the first terminal determines resource indication information according to the first information or the received downlink control information, including: The first terminal determines target channel busy information, and determines a transmission parameter of the target sidelink reference signal based on the first information; the transmission parameter of the target sidelink reference signal is associated with the target channel busy information; The first terminal determines resource indication information according to the transmission parameter.

27. The method according to claim 26, characterized in that The target channel busy information is determined according to third information, and the third information includes at least one of the following: a ratio of sidelink reference signals whose received signal strength indication RSSI exceeds a first threshold within a channel busy rate measurement window; The total number of candidate sidelink reference signal resources within the channel busy rate measurement window; The sidelink reference signal resource to be measured within the channel busy rate measurement window.

28. The method according to claim 27, characterized in that The total number of resources of the candidate side link reference signal in the channel busy rate measurement window is determined according to a third parameter and a fourth parameter; the third parameter is used to indicate the total number of resources of the candidate side link reference signal in the time slot, and the fourth parameter is used to indicate the time slot length of the channel busy rate measurement window; The third parameter includes at least one of the following: a maximum number of resources of the candidate sidelink reference signals in a time slot; The maximum number of PSCCH resources associated with the candidate sidelink reference signal in a time slot; The comb size corresponding to the candidate sidelink reference signal; The comb size corresponding to the candidate sidelink reference signal and the maximum number of candidate time domain resources of the candidate sidelink reference signal in a time slot.

29. The method according to claim 27, characterized in that The sidelink reference signal resource to be measured in the channel busy rate measurement window includes at least one of the following: Resources of all candidate sidelink reference signals within the channel busy rate measurement window; Candidate sidelink reference signal resources that are mapped to PSCCH resources within the channel busy rate measurement window; Sidelink reference signal resources preconfigured in a resource pool and within the channel busy rate measurement window; All PSCCH resources within the channel busy rate measurement window.

30. The method according to claim 26, characterized in that The transmission parameter of the target sidelink reference signal satisfies at least one of the following: The number of retransmissions corresponding to the target sidelink reference signal is less than or equal to a first number of retransmissions, where the first number of retransmissions is a maximum number of retransmissions of the sidelink reference signal determined in the first information according to the target channel busy information; The transmission power of the target sidelink reference signal is less than or equal to a first transmission power, where the first transmission power is a maximum transmission power of the sidelink reference signal determined in the first information according to the target channel busy information; The transmission period of the target sidelink reference signal is greater than or equal to a first transmission period, where the first transmission period is a maximum transmission period of the sidelink reference signal determined in the first information according to the target channel busy information; The resource pool bandwidth of the transmission resource of the target sidelink reference signal is smaller than a preset range, where the preset range is the maximum bandwidth of the sidelink reference signal determined in the first information according to the target channel busy information.

31. The method according to claim 26, characterized in that The resource indication information includes at least one of the following: Resource pool indication information, used to indicate the resource pool to which the transmission resource of the target sidelink reference signal belongs; Frequency domain resource indication information of the target sidelink reference signal; a transmission period of the target sidelink reference signal; The number of retransmissions of the target sidelink reference signal.

32. The method according to claim 1, characterized in that The first information or the downlink control information includes at least one of the following: first mapping information, where the first mapping information is used to indicate that a candidate time-frequency position of the PSCCH is associated with at least one code division resource of the PSCCH; Second mapping information, where the second mapping information is used to indicate that one candidate time-frequency position of the PSCCH is associated with at least two candidate sidelink reference signal resources.

33. The method according to claim 32, characterized in that The code division resources of the PSCCH include identification information or indication information of a cyclic shift parameter of a demodulation reference signal of the PSCCH.

34. The method according to claim 32, characterized in that In the case where one candidate time-frequency position of the PSCCH is associated with at least two candidate sidelink reference signal resources, the candidate time-frequency position of the PSCCH is associated with at least two code division resources of the PSCCH.

35. The method according to claim 34, characterized in that In the case where the candidate time-frequency position of the PSCCH is associated with at least two code division resources of the PSCCH, the code division resources of the PSCCH satisfy at least one of the following: The code division resource of the PSCCH is associated with a cyclic shift parameter of a demodulation reference signal of the PSCCH; The code division resources and time-frequency positions of the PSCCH are mapped one-to-one with the candidate sidelink reference signal resources; The code division resources and time-frequency positions of the PSCCH are mapped many-to-one with candidate sidelink reference signal resources; The code division resource of the PSCCH is mapped to one candidate sidelink reference signal resource of the at least two candidate sidelink reference signal resources.

36. The method according to claim 32, characterized in that The number of candidate sidelink reference signal resources associated with the candidate time-frequency positions of the PSCCH is less than or equal to a preset number.

37. The method according to claim 32, characterized in that The PSCCH resource includes at least one of the following: The time-frequency position of the PSCCH and the code division resources of the PSCCH; The time-frequency position of the PSCCH and the cyclic shift parameter of the demodulation reference signal of the PSCCH.

38. The method according to claim 32, characterized in that The first information or the downlink control information further includes at least one of the following: Indication information of the time-frequency position of the PSCCH; Indication information of the code division resources of the PSCCH; The identification information of the PSCCH.

39. The method according to claim 1, characterized in that The first information includes second sidelink control information, and the first terminal determines resource indication information according to the first information or the received downlink control information, including: The first terminal determines resource indication information according to the received second side link control information.

40. The method according to claim 39, characterized in that The method further comprises: The first terminal determines a target transmission resource of the target sidelink reference signal according to the resource indication information; The first terminal sends the target sidelink reference signal according to the target transmission resource.

41. The method according to claim 1, characterized in that The method further comprises: The first terminal configures a control resource set and / or a search space according to high-level information; The first terminal detects the downlink control information according to the control resource set and / or the search space, where the downlink control information is used to schedule the target sidelink reference signal or positioning information associated with the target sidelink reference signal.

42. The method according to claim 1, characterized in that In the case where a physical sidelink shared channel PSSCH is included in the time slot of the target transmission resource, the method further includes: The first terminal determines the time-frequency position of the second-level sidelink control information; and / or, The first terminal determines a transport block size used to transmit the PSSCH.

43. The method according to claim 42, characterized in that The first terminal determines a transport block size for transmitting the PSSCH, including: The first terminal determines a resource element for transmitting the PSSCH; The number of resource elements is determined according to third information, and the third information includes: The number of subcarriers in a physical resource block; The number of symbols used for the sidelink in one time slot; The number of symbols occupied by the physical sidelink feedback channel PSFCH; The number of symbols occupied by the sidelink reference signal; The number of resource elements occupied by the phase tracking reference signal and the channel state information reference signal; The number of resource elements occupied by the demodulation reference signal in a time slot.

44. The method according to claim 42, characterized in that The second-level sidelink control information is mapped onto the PSSCH.

45. The method according to claim 44, characterized in that The starting symbol mapped to the second-level sidelink control information is a symbol of the first demodulation reference signal of the PSSCH, and the second-level sidelink control information includes data transmission type indication information of the second-level sidelink control information.

46. ​​The method according to claim 42, characterized in that The number of coded modulation symbols of the second-level sidelink control information is related to the number of symbols used to transmit PSSCH in the time slot; the number of symbols used to transmit PSSCH in the time slot is related to the number of symbols occupied by the sidelink reference signal in the time slot.

47. The method according to claim 42, characterized in that In a case where the first-level sidelink control information indicates that the second-level sidelink control information is 2-D, the number of symbols used to transmit the PSSCH in the time slot is related to the number of symbols occupied by the sidelink reference signal in the time slot.

48. The method according to claim 47, characterized in that The number of symbols occupied by the sidelink reference signal in the time slot includes at least one of the following: The number of symbols configured by the higher layer; The number of symbols preconfigured by the network-side device or protocol; The number of symbols is determined according to the mode of the demodulation reference signal indicated by the first-level sidelink reference signal.

49. The method according to any one of claims 1 to 48, characterized in that The resource indication information is also used to indicate at least one of the following: The target sidelink signal supports resource multiplexing in a time division multiplexing manner within a time slot; The target sidelink signal supports resource multiplexing in a frequency domain in a frequency division multiplexing manner.

50. A resource determination method, characterized in that: include: The second terminal sends first sidelink control information to the first terminal, where the first sidelink control information is used to request a transmission resource of a target sidelink reference signal; or, The second terminal sends second sidelink control information to the first terminal, where the second sidelink control information is used to schedule the target sidelink reference signal or positioning information associated with the target sidelink reference signal; The second sidelink control information carries resource indication information, and the resource indication information is used to determine the transmission resources of the target sidelink reference signal and / or the resources of the physical sidelink control channel PSCCH associated with the target sidelink reference signal from pre-configured candidate resources.

51. The method according to claim 50, characterized in that The PSCCH resource includes at least one of the following: The time-frequency position of the PSCCH; The code division resources of the PSCCH; The PSCCH is associated with a demodulation reference signal DMRS.

52. The method according to claim 50, characterized in that The resource indication information includes at least one of the following: A first indication, where the first indication is used to indicate a resource element offset of the target sidelink reference signal, and / or a resource identifier of the target sidelink reference signal, and / or a resource identifier of the PSCCH; a second indication, where the second indication is used to indicate a time domain position of the target sidelink reference signal and / or a time domain position of a PSCCH associated with the target sidelink reference signal; a third indication, the third indication being used to indicate a time domain position of the target sidelink reference signal; a fourth indication, where the fourth indication is used to indicate a resource pool to which the target sidelink reference signal belongs; a fifth indication, the fifth indication being used to indicate a time-frequency position or a resource identifier of the target sidelink reference signal in at least one reserved time slot; A sixth indication, the sixth indication being used to indicate a frequency domain position of the PSCCH on at least one reserved time slot; a seventh indication, the seventh indication being used to indicate a time interval between a time slot where a start transmission resource of the target sidelink reference signal is located and a time slot where the downlink control information is located; An eighth indication, wherein the eighth indication is used to indicate the time-frequency position of the target sidelink reference signal and / or the PSCCH in the first time slot of the candidate resource, and / or the time-frequency position of the target sidelink reference signal and / or the PSCCH in other time slots of the candidate resource; A ninth indication, wherein the ninth indication is used to indicate a sending period of the target sidelink reference signal.

53. The method according to claim 50, characterized in that The resource indication information includes the first indication, where the first indication occupies X bits, and a value of X includes at least one of the following: A value determined according to resource information configured by high-level information; The value specified by the protocol.

54. The method according to claim 53, characterized in that The resource information configured by the high-level information includes at least one of the following: The high-level information configures a threshold for the comb size; The maximum value of the comb size of the high-level information configuration; The comb size of the high-level information configuration; The maximum number of resources of the sidelink reference signal configured by the high-level information; The maximum number of PSCCH resources configured by the high-level information.

55. The method according to claim 52, characterized in that The resource indication information includes the second indication, the second indication occupies Y1 bits, and the value of Y1 includes at least one of the following: a preset first value; A second value, where the second value is a value determined according to the time domain resource information configured by the high-level information; The product of a first parameter and the first value or the second value, the first parameter is determined according to the candidate time domain resource information corresponding to the target sidelink reference signal.

56. The method according to claim 52, characterized in that The resource indication information includes the third indication, the third indication occupies Y2 bits, and the value of Y2 is determined according to the time domain resource information corresponding to the target sidelink reference signal.

57. The method according to claim 52, characterized in that The resource indication information includes a fourth indication, and the fourth indication includes at least one of the following: The fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a dedicated resource pool or a shared resource pool; The fourth indication is used to indicate identification information of a dedicated resource pool to which the target sidelink reference signal belongs.

58. The method according to claim 52, characterized in that The fourth instruction includes at least one of the following: In a case where the fourth indication is a preset resource element offset code point, the fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a shared resource pool; In a case where the fourth indication is a preset time domain position code point, the fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a shared resource pool.

59. The method according to claim 50, characterized in that After the second terminal sends the first sidelink control information to the first terminal, the method further includes: The second terminal receives first resource indication information sent by the first terminal; the first resource indication information is resource indication information determined based on downlink control information, and the downlink control information is used to schedule the target sidelink reference signal or the positioning information corresponding to the target sidelink reference signal; The second terminal determines a target transmission resource according to the first resource indication information, and sends the target sidelink reference signal based on the target transmission resource.

60. The method according to claim 50, characterized in that After the second terminal sends the first sidelink control information to the first terminal, the method further includes: The second terminal receives second resource indication information sent by the first terminal, where the second resource indication information is used to indicate a target transmission resource of the target sidelink reference signal; The second terminal sends the target sidelink reference signal based on the target transmission resource indicated by the second resource indication information.

61. The method according to claim 50, characterized in that After the second terminal sends the first sidelink control information to the first terminal, the method further includes: The second terminal receives third resource indication information sent by the first terminal, where the third resource indication information is used to indicate a target transmission resource corresponding to the second terminal; The second terminal sends the target sidelink reference signal based on the target transmission resource indicated by the third resource indication information.

62. A resource determination method, characterized in that: include: When the third terminal receives the target sidelink reference signal and the sidelink control information associated with the target sidelink reference signal sent by the first terminal in the same time slot, the physical layer of the third terminal sends the target resource indication information to the higher layer; The third terminal sends a first sidelink reference signal according to the target resource indication information; The target resource indication information includes at least one of the following: A source address identifier associated with the target sidelink reference signal; a destination address identifier associated with the target sidelink reference signal; A sidelink reference signal request message associated with the target sidelink reference signal; a propagation type of the target sidelink reference signal; priority information of the target sidelink reference signal; bandwidth information of the target sidelink reference signal; The resource pool information of the target sidelink reference signal.

63. The method according to claim 62, characterized in that The first sidelink reference signal sent by the third terminal and the target sidelink reference signal received by the third terminal have the same characteristic information; The characteristic information includes at least one of the following: Priority information; Resource pool information; Bandwidth information; Type of communication; Destination address identifier.

64. A resource determination method, characterized in that: include: The network side device sends downlink control information to the first terminal, where the downlink control information carries resource indication information; The resource indication information is used to determine, from pre-configured candidate resources, a transmission resource of a target sidelink reference signal and / or a resource of a physical sidelink control channel PSCCH associated with the target sidelink reference signal.

65. The method according to claim 64, characterized in that The PSCCH resource includes at least one of the following: The time-frequency position of the PSCCH; The code division resources of the PSCCH; The PSCCH is associated with a demodulation reference signal DMRS.

66. The method according to claim 64, characterized in that The resource indication information includes at least one of the following: A first indication, where the first indication is used to indicate a resource element offset of the target sidelink reference signal, and / or a resource identifier of the target sidelink reference signal, and / or a resource identifier of the PSCCH; a second indication, where the second indication is used to indicate a time domain position of the target sidelink reference signal and / or a time domain position of a PSCCH associated with the target sidelink reference signal; a third indication, the third indication being used to indicate a time domain position of the target sidelink reference signal; a fourth indication, where the fourth indication is used to indicate a resource pool to which the target sidelink reference signal belongs; a fifth indication, the fifth indication being used to indicate a time-frequency position or a resource identifier of the target sidelink reference signal in at least one reserved time slot; A sixth indication, the sixth indication being used to indicate a frequency domain position of the PSCCH on at least one reserved time slot; a seventh indication, the seventh indication being used to indicate a time interval between a time slot where a start transmission resource of the target sidelink reference signal is located and a time slot where the downlink control information is located; An eighth indication, wherein the eighth indication is used to indicate the time-frequency position of the target sidelink reference signal and / or the PSCCH in the first time slot of the candidate resource, and / or the time-frequency position of the target sidelink reference signal and / or the PSCCH in other time slots of the candidate resource; A ninth indication, wherein the ninth indication is used to indicate a sending period of the target sidelink reference signal.

67. The method according to claim 66, characterized in that The resource indication information includes the first indication, where the first indication occupies X bits, and a value of X includes at least one of the following: A value determined according to resource information configured by high-level information; The value specified by the protocol.

68. The method according to claim 67, characterized in that The resource information configured by the high-level information includes at least one of the following: The high-level information configures a threshold for the comb size; The maximum value of the comb size of the high-level information configuration; The comb size of the high-level information configuration; The maximum number of resources of the sidelink reference signal configured by the high-level information; The maximum number of PSCCH resources configured by the high-level information.

69. The method according to claim 66, characterized in that The resource indication information includes the second indication, the second indication occupies Y1 bits, and the value of Y1 includes at least one of the following: a preset first value; A second value, where the second value is a value determined according to the time domain resource information configured by the high-level information; The product of a first parameter and the first value or the second value, the first parameter is determined according to the candidate time domain resource information corresponding to the target sidelink reference signal.

70. The method of claim 66, wherein: The resource indication information includes the third indication, the third indication occupies Y2 bits, and the value of Y2 is determined according to the time domain resource information corresponding to the target sidelink reference signal.

71. The method of claim 66, wherein: The resource indication information includes a fourth indication, and the fourth indication includes at least one of the following: The fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a dedicated resource pool or a shared resource pool; The fourth indication is used to indicate identification information of a dedicated resource pool to which the target sidelink reference signal belongs.

72. The method of claim 66, wherein: The fourth instruction includes at least one of the following: In a case where the fourth indication is a preset resource element offset code point, the fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a shared resource pool; In a case where the fourth indication is a preset time domain position code point, the fourth indication is used to indicate that the resource pool to which the target sidelink reference signal belongs is a shared resource pool.

73. The method according to claim 64, characterized in that Before the network side device sends the downlink control information to the first terminal, the method further includes: The network side device receives first request information sent by the first terminal, where the first request information is used to request transmission resources of the target sidelink reference signal.

74. The method according to claim 73, characterized in that The first request information and the target sidelink reference signal have the same priority.

75. The method according to claim 73, characterized in that The first request information includes at least one of the following: The destination identifier or source address identifier associated with the target sidelink reference signal Synchronization source information of a target terminal; the target terminal is a terminal device that sends the target sidelink reference signal; Resource configuration indication information; the resource configuration indication information is used to pre-configure the transmission resources of the target sidelink reference signal.

76. The method according to claim 75, characterized in that The target terminal includes at least one of the following: the first terminal; a terminal device for positioning with the first terminal; a terminal device that establishes a unicast connection with the first terminal; A terminal device having the same destination address as the first terminal.

77. The method according to claim 75, characterized in that The resource configuration indication information includes at least one of the following: identification information of candidate resources of the target sidelink reference signal desired by the target terminal; The frequency domain resource size desired by the target terminal for transmitting the target sidelink reference signal; A resource pool desired by the target terminal for transmitting the target sidelink reference signal; A resource period of the target sidelink reference signal expected by the target terminal; The target terminal expects an expected number of retransmissions of the target sidelink reference signal within a resource period.

78. The method of claim 75, wherein: The target terminal includes at least two terminal devices.

79. The method according to claim 78, characterized in that The method further comprises: The network side device sends second information to the first terminal, where the second information is used to indicate a target transmission resource corresponding to the target terminal and / or a mapping relationship between the target transmission resource and the target terminal.

80. The method of claim 64, wherein: The downlink control information further includes at least one of the following: Indication information of the time-frequency position of the PSCCH; Indication information of the code division resources of the PSCCH; The identification information of the PSCCH.

81. The method according to any one of claims 64 to 80, characterized in that The resource indication information is also used to indicate at least one of the following: The target sidelink signal supports resource multiplexing in a time division multiplexing manner within a time slot; The target sidelink signal supports resource multiplexing in a frequency domain in a frequency division multiplexing manner.

82. A resource determination device, characterized in that: Applied to a first terminal, the device includes: A resource indication information determining module, configured to determine resource indication information according to the first information or the received downlink control information; The resource indication information is used to determine, from pre-configured candidate resources, a transmission resource of a target sidelink reference signal and / or a resource of a physical sidelink control channel PSCCH associated with the target sidelink reference signal.

83. A resource determination device, characterized in that: Applied to a second terminal, the device includes: A first sending module is configured to send first sidelink control information to a first terminal, where the first sidelink control information is used to request a transmission resource of a target sidelink reference signal; or A second sending module, configured to send second sidelink control information to the first terminal, where the second sidelink control information is used to schedule the target sidelink reference signal or positioning information associated with the target sidelink reference signal; The second sidelink control information carries resource indication information, and the resource indication information is used to determine the transmission resources of the target sidelink reference signal and / or the resources of the physical sidelink control channel PSCCH associated with the target sidelink reference signal from pre-configured candidate resources.

84. A resource determination device, characterized in that: Applied to a third terminal, the device includes: a resource indication information sending module, configured to, when a target sidelink reference signal and sidelink control information associated with the target sidelink reference signal sent by the first terminal are received in the same time slot, send target resource indication information from the physical layer of the third terminal to the higher layer; A sidelink reference signal sending module, configured to send a first sidelink reference signal according to the target resource indication information; The target resource indication information includes at least one of the following: A source address identifier associated with the target sidelink reference signal; a destination address identifier associated with the target sidelink reference signal; A sidelink reference signal request message associated with the target sidelink reference signal; a propagation type of the target sidelink reference signal; priority information of the target sidelink reference signal; bandwidth information of the target sidelink reference signal; The resource pool information of the target sidelink reference signal.

85. A resource determination device, characterized in that: Applied to a network side device, the device comprises: A downlink control information sending module, configured to send downlink control information to the first terminal, wherein the downlink control information carries resource indication information; The resource indication information is used to determine, from pre-configured candidate resources, a transmission resource of a target sidelink reference signal and / or a resource of a physical sidelink control channel PSCCH associated with the target sidelink reference signal.

86. A terminal device, characterized in that: It includes a processor and a memory, the memory storing a program or instruction that can be run on the processor, and the program or instruction, when executed by the processor, implements the resource determination method as described in any one of claims 1 to 49, or implements the resource determination method as described in any one of claims 50 to 61, or implements the resource determination method as described in any one of claims 62 to 63.

87. A network side device, characterized in that: It includes a processor and a memory, the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, it implements the resource determination method as described in any one of claims 64 to 81.

88. A readable storage medium, characterized in that The readable storage medium stores programs or instructions, and when the programs or instructions are executed by the processor, they implement the resource determination method as described in any one of claims 1 to 49, or implement the resource determination method as described in any one of claims 50 to 61, or implement the resource determination method as described in any one of claims 62 to 63, or implement the resource determination method as described in any one of claims 64 to 81.

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