Information transmission method and device, equipment, storage medium and program product

Abstract

Disclosed are an information transmission method, apparatus and device, a storage medium and a program product, belonging to the technical field of communications, the information transmission method of the embodiment of the present application comprising: a first UE receiving a bypass indication signal; and after receiving the side link indication signal, the first UE executes a target operation on a side link control channel (PSCCH) and / or a physical side link shared channel (PSSCH) according to the side link indication signal, the target operation comprising one of the following operations: receiving the PSCCH or the PSSCH, or not receiving the PSCCH or the PSSCH. According to the method, the terminal is assisted to transmit and receive the control signaling or transmit and receive the data through the side link indication signal, so that the energy consumption or power consumption of the terminal can be reduced.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to an information transmission method, apparatus, device, storage medium, and program product. Background Technology

[0002] Sidelink (SL) transmission refers to data transmission directly between user equipment (UEs) at the physical layer. An SL UE is a UE that transmits information via a sidelink. During information transmission, an SL UE needs to determine the resources used for transmission through a specific resource allocation method. This resource allocation method typically includes two modes: one where the base station schedules and allocates transmission resources to the UE; and the other where the UE decides the resources used for transmission itself.

[0003] In related technologies, when the SL UE uses the second mode to determine the resources used for transmission, a large number of detections and demodulations of the sidelink control information (SCI) are required within the detection window to select transmission resources. However, this method results in higher power consumption for the SL UE. Summary of the Invention

[0004] This application provides an information transmission method, apparatus, device, storage medium, and program product that enables a terminal to perform signaling transmission and reception or data transmission and reception based on a received sidelink indication signal, thereby reducing the terminal's energy consumption or power consumption.

[0005] Firstly, an information transmission method is provided, executed by a first UE, the method comprising:

[0006] The first UE receives the side link indication signal;

[0007] After receiving the side link indication signal, the first UE performs a target operation on the PSCCH and / or PSSCH according to the side link indication signal. The target operation includes one of the following operations: receiving the PSCCH or PSSCH, or not receiving the PSCCH or PSSCH.

[0008] Secondly, an information transmission method is provided, executed by a second UE, the method comprising:

[0009] The second UE sends a side link indication signal to the first UE; the side link indication signal is used to instruct the first UE to perform a target operation on the PSCCH and / or PSSCH upon receiving the side link indication signal;

[0010] The target operation includes one of the following operations: receiving PSCCH or PSSCH, or not receiving PSCCH or PSSCH.

[0011] Thirdly, an information transmission method is provided, executed by a network-side device, the method comprising:

[0012] Configuration information of transmission resources for sending a side link indication signal to the second UE;

[0013] The configuration information includes time-domain resources, frequency-domain resources, or code-domain resources configured for the sidelink indication signal, and / or the association between the sidelink indication signal and the PSCCH or PSSCH.

[0014] Fourthly, an information transmission device is provided, comprising:

[0015] The first receiving module is used to receive the side link indication signal;

[0016] The information transmission module is used to perform a target operation on the PSCCH and / or PSSCH according to the side link indication signal after receiving the side link indication signal. The target operation includes one of the following operations: receiving the PSCCH or PSSCH, or not receiving the PSCCH or PSSCH.

[0017] Fifthly, an information transmission device is provided, comprising:

[0018] A first transmitting module is configured to transmit a sidelink indication signal to a first UE; the sidelink indication signal is configured to instruct the first UE to perform a target operation on the PSCCH and / or PSSCH upon receiving the sidelink indication signal; the target operation includes one of the following operations: receiving the PSCCH or PSSCH, or not receiving the PSCCH or PSSCH.

[0019] Sixthly, an information transmission device is provided, comprising:

[0020] The second transmitting module is used to transmit the configuration information of the transmission resources of the side link indication signal to the second UE;

[0021] The configuration information includes time-domain resources, frequency-domain resources, or code-domain resources configured for the sidelink indication signal, and / or the association between the sidelink indication signal and the PSCCH or PSSCH.

[0022] In a seventh aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the information transmission method as described in the first aspect, and / or implementing the steps of the information transmission method as described in the second aspect.

[0023] Eighthly, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used to receive a sidelink indication signal; the processor is used to perform a target operation on PSCCH and / or PSSCH according to the sidelink indication signal after the communication interface receives the sidelink indication signal, the target operation including one of the following operations: receiving PSCCH or PSSCH, or not receiving PSCCH or PSSCH.

[0024] Alternatively, the communication interface is further configured to send a sidelink indication signal to the first UE; the sidelink indication signal is configured to instruct the first UE to perform a target operation on the PSCCH and / or PSSCH upon receiving the sidelink indication signal; the target operation includes one of the following operations: receiving the PSCCH or PSSCH, or not receiving the PSCCH or PSSCH.

[0025] In a ninth aspect, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the information transmission method as described in the third aspect.

[0026] In a tenth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to send configuration information of transmission resources for a sidelink indication signal to a second UE; the configuration information includes time-domain resources, frequency-domain resources or code-domain resources configured for the sidelink indication signal, and / or the association relationship between the sidelink indication signal and the PSCCH or PSSCH.

[0027] Eleventhly, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or the steps of the information transmission method described in the second aspect, or the steps of the information transmission method described in the third aspect.

[0028] In a twelfth aspect, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal is configured to perform the steps of the information transmission method as described in the first aspect, or to perform the steps of the information transmission method as described in the second aspect, and the network-side device is configured to perform the steps of the information transmission method as described in the third aspect.

[0029] In a thirteenth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the information transmission method as described in the first aspect, or the information transmission method as described in the second aspect, or the steps of the information transmission method as described in the third aspect.

[0030] In a fourteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the information transmission method as described in the first aspect, or to implement the steps of the information transmission method as described in the second aspect, or to implement the steps of the information transmission method as described in the third aspect.

[0031] In the embodiments of this application, after receiving the side link indication signal, the first UE can perform the target operation on the PSCCH and / or PSSCH according to the side link indication signal. In this way, the side link indication signal assists the first UE in sending and receiving control signaling or data, thereby reducing the power consumption of the UE. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of side-link communication in related technologies;

[0033] Figure 2 This is a diagram illustrating the distribution of resources in related technologies;

[0034] Figure 3 This is a schematic diagram illustrating the working principle of a low-power receiver in related technologies;

[0035] Figure 4 This is a block diagram of the wireless communication system provided in this application;

[0036] Figure 5 This is one of the flowcharts illustrating the information transmission method provided in this application;

[0037] Figure 6 This is the second flowchart illustrating the information transmission method provided in this application;

[0038] Figure 7 This is a schematic diagram of the structure of the receiving terminal-side information transmission device provided in this application;

[0039] Figure 8 This is a schematic diagram of the structure of the information transmission device on the sending terminal side provided in this application;

[0040] Figure 9 This is a schematic diagram of the network device-side information transmission apparatus provided in this application;

[0041] Figure 10 This is a schematic diagram of the structure of the terminal provided in this application;

[0042] Figure 11 This is a schematic diagram of the physical structure of the terminal provided in this application;

[0043] Figure 12 This is a schematic diagram of the network-side device provided in this application. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0045] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, without limiting the number of objects; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, "A or B" covers three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0046] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as one in which the sender explicitly informs the receiver of specific information, the operation to be performed, or the requested result, etc., in the instruction sent. An indirect instruction can be understood as one in which the receiver determines the corresponding information based on the instruction sent by the sender, or makes a judgment and determines the operation to be performed or the requested result, etc., based on the judgment result.

[0047] The following will first explain the proper nouns that may be involved in the embodiments of this application.

[0048] RRC: Radio Resource Control.

[0049] TX: Transmitter, the sender or transmitter.

[0050] RX: Receiver, the receiving end or receiver.

[0051] TB: Transport Block.

[0052] RSRP: Reference Signal Received Power.

[0053] SCI: Sidelink Control Information.

[0054] DCI: Downlink Control Information.

[0055] SS: Synchronization Signal.

[0056] RRM: Radio Resource Management.

[0057] PDB: Packet Delay Budget.

[0058] DMRS: Demodulation Reference Signal.

[0059] MCS: Modulation and Coding Scheme.

[0060] RB: Resource Block.

[0061] RE: Resource Element.

[0062] To facilitate a better understanding of the technical solution of this application, the relevant technical background of this application is explained below.

[0063] one, sidelink

[0064] Sidelink (also translated as secondary link, side link, etc.) transmission refers to data transmission between terminals (User Equipment, UE) directly at the physical layer. For details, please refer to... Figure 1 The diagram shows a sidelink communication protocol. In this protocol, the UE and the base station can communicate via the uplink and downlink, and the UEs can communicate with each other via the sidelink.

[0065] The R16 NR sidelink includes the following channels:

[0066] PSCCH (physical sidelink control channel);

[0067] PSSCH (physical sidelink shared channel);

[0068] PSBCH (physical sidelink broadcast channel);

[0069] PSFCH (physical sidelink discovery feedback channel);

[0070] In this system, PSSCH allocates resources on a sub-channel basis, using a continuous resource allocation method in the frequency domain. The time-domain resources of PSCCH are determined by the number of symbols configured by the higher layers, and the frequency-domain size is also determined by parameters configured by the higher layers. Furthermore, the frequency-domain resources of PSCCH are limited to be less than or equal to the size of one sub-channel, and PSCCH is located within the range of the lowest sub-channel of PSSCH. For example, see [reference needed]. Figure 2 The resource distribution diagram shown here includes AGC (Automatic Gain Control) and GP (Guard Symbol), which is typically one symbol long.

[0071] Sidelink's resource allocation method

[0072] SL UEs include two resource allocation methods: mode1 and mode2. Mode1 involves resources scheduled by the base station, while mode2 allows the UE to decide which resources to use for transmission. Resource information may come from base station broadcast messages or pre-configured information. If the UE is within range of the base station and has an RRC connection with it, it can operate in mode1 and / or mode2. If the UE is within range of the base station but does not have an RRC connection, it can only operate in mode2. If the UE is outside range of the base station, it can only operate in mode2 and will perform SL transmission according to the pre-configured information.

[0073] For mode 2, the specific operation is as follows: 1) After resource selection is triggered, the TX UE first determines the resource selection window. The lower boundary of the resource selection window is at time T1 after the resource selection is triggered, and the upper boundary is at time T2 after the trigger. T2 is the value selected by the UE within its TB transmission PDB (packet delay budget), and T2 is no earlier than T1. 2) Before resource selection, the UE needs to determine the candidate resource set. It compares the measured RSRP on the resources within the resource selection window with the corresponding RSRP threshold. If the RSRP is lower than the RSRP threshold, then the resource can be included in the candidate resource set. 3) After the resource set is determined, the UE randomly selects a transmission resource from the candidate resource set. Additionally, the UE can reserve transmission resources for subsequent transmissions during this transmission.

[0074] NR SL supports chained resource reservation, meaning that an SCI can indicate the current transport resources, reserve up to two additional resources, and indicate up to three more reserved resources in the next resource cycle. Within the selection window, resources can be continuously reserved using a dynamic reservation method.

[0075] two, Low power receiver

[0076] 3GPP began its research on introducing LP WUR (Low Power Wake-Up Receiver) / WUS (Wake-Up Signal) into mobile cellular systems starting with Rel-18. See [link / reference needed]. Figure 3 The diagram illustrates the working principle of NR LP-WUR / LP-WUS / LP-SS. The basic working principle of LP-WUR is that the receiver includes a first module and a second module. The first module is the main communication module, used to receive and transmit communication data from the transmitter. The second module is a low-power module, used to receive the low-power wake-up signal (LP-WUS) and the low-power synchronization signal (LP-SS) sent by the transmitter. The low-power wake-up signal is used to wake up the receiver's main communication module, and the low-power synchronization signal provides time reference information and other information for receiving the low-power wake-up signal. For example, it is used for RRM measurement of the serving cell and can also provide wake-up link management, such as determining whether to activate / deactivate LP-WUR and shut down MR (main communication module) based on measurement results. Figure 3As shown, the first module remains in a closed state when not woken up by the second module, and does not send or receive data. When downlink data arrives, the second module detects a wake-up signal sent by the transmitter, and this wake-up signal contains information about the terminal. The second module then triggers the first module to switch from a closed state to a working state, enabling data reception and transmission. The second module can be continuously or intermittently powered on. When powered on, the second module can receive low-power wake-up signals and low-power synchronization signals.

[0077] Currently, in mode 2 resource allocation mode, Sidelink UEs need to detect and demodulate SCI in each slot (time slot) of the detection window, and then select transmission resources according to the SCI indication. This large amount of SCI detection and demodulation results in high terminal power consumption. Therefore, embodiments of this application provide an information transmission method, apparatus, device, storage medium, and program product that can solve this problem.

[0078] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0079] Figure 4This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (AS), or Wireless Fidelity (WiFi) nodes, etc.The base station may be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmission Reception Point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that the embodiments of this application only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.

[0080] The information transmission method provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0081] It should be noted that the information transmission method of this application can be applied to a terminal or a network-side device. When applied to a terminal, the terminal can be a receiving terminal or a sending terminal, wherein the receiving terminal is referred to as the first UE in the following embodiments, and the sending terminal is referred to as the second UE in the following embodiments. Furthermore, it is understood that each terminal can simultaneously possess both receiving and sending functions.

[0082] The following embodiments will first take the application of the information transmission method to the receiving terminal (also known as the receiving terminal side, i.e., the first UE) as an example for explanation.

[0083] Figure 5 This is one of the flowcharts illustrating the information transmission method provided in this application; see [link / reference]. Figure 5 As shown, the method may include the following steps:

[0084] S202, the first UE receives the side link indication signal.

[0085] The side link indicator signal can also be called the side link indicator signal, the side link power saving signal, or the side link wake-up signal (WUS).

[0086] The sidelink indication signal received by the first UE can be sent to the first UE by the second UE, or it can be received by the first UE through other means; no specific limitation is made here. The second UE can be a UE that communicates with the first UE via a sidelink.

[0087] In addition, the first UE can be in a low-power state before receiving the side link indication signal, which can reduce the power consumption of the first UE.

[0088] S204, after receiving the sidelink indication signal, the first UE performs a target operation on the PSCCH and / or PSSCH according to the sidelink indication signal. The target operation includes one of the following operations: receiving the PSCCH or PSSCH, or not receiving the PSCCH or PSSCH.

[0089] In this step, after receiving the side link indication signal, the first UE can detect (including blind detection) or decode the side link indication signal, or it can perform related detection on the side link indication signal (such as detecting PSCCH or PSSCH that are related to the side link indication signal), or it can select the resources required for transmitting information or data based on the side link indication signal.

[0090] By processing the aforementioned sidelink indication signal, the information contained within it can be obtained. Then, based on this information, a target operation can be performed on the PSCCH and / or PSSCH. This target operation can be an operation performed on information or data on the PSCCH and / or PSSCH channels. For example, it may include receiving control information on the PSCCH and / or receiving data on the PSSCH, or not receiving control information on the PSCCH and / or not receiving data on the PSSCH. Receiving control information on the PSCCH may include demodulating the control information on the PSCCH and / or demodulating the data on the PSSCH, while not receiving control information on the PSCCH and / or not receiving data on the PSSCH may include not demodulating the control information on the PSCCH and / or not demodulating the data on the PSSCH.

[0091] Taking the sidelink indication signal as the sidelink wake-up signal as an example, if the first UE does not receive the sidelink wake-up signal, the UE can be in a sleep state or a low-power state, that is, the UE is in a state of not listening to the PSCCH or PSSCH, and therefore the UE does not receive control information on the PSCCH or data on the PSSCH. In this way, the first UE can maintain a low-power state, thereby reducing the power consumption of the first UE.

[0092] In this embodiment, after receiving the side link indication signal, the first UE can perform the target operation on the PSCCH and / or PSSCH according to the side link indication signal. In this way, the side link indication signal assists the first UE in sending and receiving control signaling or data, thereby reducing the power consumption of the UE.

[0093] When the first UE receives the side link indication signal, it will receive the side link indication signal on a certain transmission resource. Therefore, the first UE needs to determine the transmission resource corresponding to the side link indication signal. The following embodiments will describe several possible implementation methods for the first UE to determine the transmission resource of the side link indication signal.

[0094] In one exemplary embodiment, the first UE determines the transmission resources of the side link indication signal by at least one of the following methods:

[0095] The first method of acquisition: determined based on network-side device configuration information, protocol agreement, downlink control information (DCI) or side link control information (SCI);

[0096] The second acquisition method: randomly select from at least one dedicated transmission resource;

[0097] The third method of acquisition: determined based on channel occupancy.

[0098] The transmission resources for the sidelink indication signal may include at least one of the time-domain resources, frequency-domain resources, and code-domain resources corresponding to the sidelink indication signal. Furthermore, the transmission resources for the sidelink indication signal may be the transmission resources of the transmitting UE or the receiving UE. For example, if the first UE is the receiving UE, then the determined transmission resources may be the transmission resources for receiving the sidelink indication signal.

[0099] For the first acquisition method described above, the network-side device or protocol can pre-determine the transmission resources corresponding to the sidelink indication signal. These transmission resources can be those used by the first UE when receiving the sidelink indication signal, or those used by the second UE when sending the sidelink indication signal. The network-side device can inform the first or second UE of these transmission resources, facilitating the second UE to send the sidelink indication signal on these resources or the first UE to receive the sidelink indication signal on these resources. If the transmission resources are pre-defined by the protocol, they can be pre-defined to the first and / or second UE through the protocol. Alternatively, the network-side device (e.g., a base station) can send a DCI (Distributed Control Information) to the first or second UE, indicating the transmission resources for the sidelink indication signal. Or, other terminals can send an SCI (Self-Controlled Information) to the first or second UE, indicating the transmission resources for the sidelink indication signal.

[0100] For the second acquisition method described above, the network-side equipment can pre-configure at least one dedicated transmission resource for the sidelink indication signal. The UE can then randomly select one of these transmission resources as the transmission resource for the sidelink indication signal. The specific method for random resource selection is not limited here. For example, different access positions can be configured at the start of the time-domain resource of the sidelink indication signal, and the UE can obtain the transmission resource for the sidelink indication signal by contending for the access channel. The second and first acquisition methods can also be used in combination, i.e., at least one dedicated transmission resource can be configured by the network side or predefined by the protocol, and then randomly selected by the UE.

[0101] For the third acquisition method mentioned above, either the first UE or the second UE can detect its current channel occupancy status and then select a suitable channel resource as the transmission resource for the sidelink indication signal based on the detected channel occupancy status. For example, if the first UE has three channels that can transmit and receive the sidelink indication signal, namely channel 1, channel 2, and channel 3, and channels 1 and 3 are already occupied, then the first UE can select channel 2 as the transmission resource for the sidelink indication signal.

[0102] In an exemplary embodiment, the transmission resources for the above-mentioned side link indication signal may include at least one of time domain resources, frequency domain resources, and code domain resources, which will be described below.

[0103] I. The transmission resources of the above-mentioned side link indication signal include time domain resources. The units of these time domain resources when configuring resources include at least one of the following: symbol; sub-slot; slot; millisecond (ms); sub-symbol.

[0104] The granularity of this time-domain resource configuration includes at least one of the following: UE; UE group; carrier; BWP; cell; area; resource pool. The area may be related to the coverage range of the sidelink indication signal, and the UE group can be divided according to the UE's receiver conversion capability or the UE's service type.

[0105] The resource location of this time-domain resource includes at least one of the following: a periodic sub-frame, slot, sub-slot, or symbol; or a sub-frame, slot, sub-slot, or symbol at a specific location. For example, the time-domain resource of this sidelink indicator signal is in the first N2 symbols.

[0106] 2. The transmission resources of the above-mentioned side link indication signal include frequency domain resources. The units of these frequency domain resources when configuring resources include at least one of the following: sub-channel; physical resource block (PRB); sub-physical resource block (sub-PRB); resource element (RE).

[0107] The granularity of the frequency domain resources during resource configuration is the same as that of the time domain resources. For example, it may include at least one of the following: UE; UE group; carrier; BWP; cell; region; resource pool.

[0108] The location of this frequency domain resource includes at least one of the following:

[0109] A specific resource pool, BWP, carrier, subchannel, physical resource block, sub-physical resource block, or resource element;

[0110] Dedicated resource pool or BWP or carrier or subchannel or physical resource block or sub-physical resource block or resource element;

[0111] Periodic resource pools or BWPs or carriers or subchannels or physical resource blocks or sub-physical resource blocks or resource elements.

[0112] For example, a sidelink indication signal is sent in a specific pool, and a second UE transmits the sidelink indication signal in that pool. Another example is that the frequency domain resources of the sidelink indication signal are the smallest or largest N1 sub-channels within the pool.

[0113] For the aforementioned periodic resource pools, BWPs, carriers, sub-channels, physical resource blocks, sub-physical resource blocks, or resource elements, the resource pools, BWPs, carriers, sub-channels, physical resource blocks, sub-physical resource blocks, or resource elements can all be periodically configured resources.

[0114] Furthermore, the time-domain and frequency-domain resources of the aforementioned sidelink indication signal can be collectively referred to as time-frequency resources. Therefore, the time-frequency resources used by the UE when sending or receiving the sidelink indication signal can be pre-configured. These time-frequency resources (or time-frequency positions) can be configured for each UE or each UE group. When the transmission resources of the sidelink indication signal are configured for each UE or each UE group, the transmission resources of the sidelink indication signal for different UEs can be distinguished by the UE ID or UE group ID; that is, different UEs or UEs belonging to different UE groups correspond to different transmission resources for the sidelink indication signal.

[0115] If the time-frequency resources used by the UE when sending the sidelink indication signal are configured, then for the RX UE, the RX UE needs to blindly demodulate the sequence of the corresponding TX UE's sidelink indication signal. Only if the sequence of the corresponding TX UE's sidelink indication signal is demodulated will the RX UE demodulate the PSCCH or PSSCH associated with that sidelink indication signal.

[0116] If the UE is configured to use time-frequency resources when receiving a sidelink indication signal, then the UE only needs to demodulate the sequence of the corresponding sidelink indication signal on the time-frequency resources of the sidelink indication signal. If the sequence of the corresponding sidelink indication signal is demodulated, the UE will demodulate the PSCCH or PSSCH associated with the sidelink indication signal.

[0117] In addition, the time and frequency resources of the side link indication signal can also be configured for each carrier of each UE. Thus, one time and frequency resource of the side link indication signal can be configured within a carrier, and the time and frequency resources of the side link indication signal of different UEs can be distinguished by the UE ID, that is, different UE IDs correspond to different time and frequency resources of the side link indication signal.

[0118] 3. The transmission resources of the aforementioned side link indication signal include code field resources, and the information of these code field resources includes at least one of the following:

[0119] The number of code domain resources;

[0120] Types of code domain resources;

[0121] The length of the sequence corresponding to the code field resource;

[0122] The length of each chip when the sequence corresponding to the code domain resource is mapped to the time domain resource;

[0123] The sequence used when sending a sidelink indication signal, and / or the sequence used when receiving a sidelink indication signal.

[0124] The code domain resource can be multiple sequences or concatenated sequences implemented using preambles, cyclic shift codes, or separator codes. The resource configuration information for this code domain resource can include the number of code domain resources. Optionally, the number of code domain resources can be one. The second UE can transmit the same code or sequence on the same time-frequency resource. For the first UE at the receiving end, demodulating the sequence transmitted by the second UE can identify whether the second UE is transmitting a sequence of a sidelink indication signal, or it can also identify whether the second UE is transmitting a PSCCH or PSSCH on the PSCCH or PSSCH resource associated with the sidelink indication signal. For example, if the sidelink indication signal is associated with all PSCCHs or PSSCHs within a certain time window, then the first UE at the receiving end or the sensing UE can determine whether to demodulate the PSCCH or PSSCH within that time window by demodulating the sequence of the sidelink indication signal on the corresponding transmission resource of the sidelink indication signal, thereby achieving power saving.

[0125] The information for configuring the code domain resource may also include the type of the code domain resource. Here, the type of the code domain resource may be the type of the sequence corresponding to the code domain resource, such as a sequence composed of different types of codes such as preamble, cyclic shift code, or separator code.

[0126] The information for configuring the code domain resource may also include the length of the sequence corresponding to the code domain resource. Here, the length of the sequence corresponding to the code domain resource refers to the length of the sequence corresponding to the side link indicator signal. The length of the sequence can be the code length of the sequence, which can be determined based on the coverage of PSCCH or PSSCH or the coverage of the side link indicator signal.

[0127] The resource configuration information for this code domain resource may also include the length of each chip when the sequence corresponding to the code domain resource is mapped to the time domain resource. Here, the sequence corresponding to the code domain resource is the sequence corresponding to the sidelink indicator signal. The length of each chip when the sequence of this sidelink indicator signal is mapped to the time domain resource is preset. This can avoid inter-chip interference when chips sent by UEs at different locations arrive at the receiving UE (i.e., RX UE). The length of the mapped chip can be, for example, equivalent to the symbol length.

[0128] The resource configuration information for this code domain may also include the sequence used when transmitting a sidelink indication signal, and / or the sequence used when receiving a sidelink indication signal. This sequence used when transmitting and / or receiving a sidelink indication signal can be configured for each UE or each group of UEs. That is, one sequence can be configured for each UE to receive or transmit a sidelink indication signal; alternatively, a set of sequences can be configured for each group of UEs, where each UE within the group may correspond to the same or different sequences.

[0129] Specifically, the sequence used by the UE when transmitting the sidelink indication signal is configured. For the RX UE (receiving UE), the RX UE needs to blindly demodulate the sequence of the corresponding TX UE's (transmitting UE) sidelink indication signal. Only if the sequence of the corresponding TX UE's sidelink indication signal is demodulated will the RX UE demodulate the PSCCH or PSSCH associated with that sidelink indication signal. Additionally, the sequence used by the UE when receiving the sidelink indication signal is configured is configured so that the RX UE only needs to demodulate the sequence of the corresponding sidelink indication signal on the time-frequency resources of the sidelink indication signal. Only if the sequence of the corresponding sidelink indication signal is demodulated will the RX UE demodulate the PSCCH or PSSCH associated with that sidelink indication signal.

[0130] When receiving or transmitting sidelink indication signals according to the UE group configuration, the RX UE can obtain the sequence of sidelink indication signals to be transmitted or received from the configured set of sidelink indication signal sequences based on its own information. Alternatively, the RX UE can also obtain the sequence of sidelink indication signals to be transmitted or received from the configured set of sidelink indication signal sequences based on the information of the peer UE. The information of the RX UE or the peer UE may include, for example, UE ID (UE identifier), source ID (service source identifier), destination ID (service destination identifier), member ID (member identifier), etc. The meaning of peer UE is: if the UE is a TX UE, the peer UE is an RX UE; if the UE is an RX UE, the peer UE is a TX UE.

[0131] In this embodiment, by configuring various different transmission resources for the side link indication signal, the transmission of the side link indication signal can be facilitated.

[0132] The above embodiments illustrate the transmission resources of the side link indication signal. The following embodiments describe the specific content of the first information indicated by the side link indication signal.

[0133] In an exemplary embodiment, the aforementioned sidelink indicator signal may include first information or be used to indicate first information. The first information may be control information of the PSCCH or PSSCH associated with the sidelink indicator signal, or it may be resource mapping information of the associated PSCCH or PSSCH. Specifically, the first information may include at least one of the following:

[0134] 1. At least one of the time-domain resources, frequency-domain resources, or code-domain resources of PSCCH or PSSCH;

[0135] 2. Identification information; This identification information includes the UE identifier of the first UE and / or the service identifier of the first UE;

[0136] 3. Transmitting information;

[0137] 4. Instruction information; This instruction information is used to instruct the first UE to perform the target operation.

[0138] Specifically, for the first type of first information, the time-domain resources, frequency-domain resources, or code-domain resources of the PSCCH or PSSCH can be the time-domain resources, frequency-domain resources, or code-domain resources of the PSCCH or PSSCH associated with the side link indication signal, or they can be the time-domain resources, frequency-domain resources, or code-domain resources of the PSCCH or PSSCH transmitted by the side link indication signal, or they can be the time-domain resources, frequency-domain resources, or code-domain resources of the PSCCH or PSSCH reserved in the side link indication signal.

[0139] As an optional embodiment, when the sidelink indication signal is used to indicate at least one of the time-domain resources, frequency-domain resources, or code-domain resources of the PSCCH or PSSCH, the sidelink indication signal may include:

[0140] The lowest, highest, or specific frequency domain unit index in the frequency domain;

[0141] The index of the smallest, largest, or specific time unit in the time domain;

[0142] Index of the resource in the code domain;

[0143] Time and frequency resource map information.

[0144] In other words, the frequency domain resources of the PSCCH or PSSCH can be determined by the lowest, highest, or specific frequency domain unit index of the frequency domain where the sidelink indicator signal is located. The time domain resources of the PSCCH or PSSCH can be determined by the lowest, highest, or specific time domain unit index of the time domain where the sidelink indicator signal is located. The code domain resources of the PSCCH or PSSCH can be determined by the index of the code domain resources of the sidelink indicator signal. Finally, the time domain or frequency domain resources of the PSCCH or PSSCH can be determined by the time-frequency resource pattern information of the PSCCH or PSSCH associated with the sidelink indicator signal; where the pattern can be a RE resource in a specific frequency domain or a specific time domain, for example, the time domain or frequency domain resources of the PSCCH or PSSCH can be determined by the pattern ID.

[0145] Additionally, if the first information indicated by the sidelink indication signal includes reserved time-domain, frequency-domain, or code-domain resources for the PSCCH or PSSCH, i.e., indicating resource reservation information for the PSCCH or PSSCH, then the sidelink indication signal can carry information related to the time-frequency resource location of the PSCCH or PSSCH transmission, such as the time-frequency resource location, its index, and the pattern information corresponding to that location. The time-frequency resource location of the PSCCH or PSSCH is one of randomly selected patterns, and the pattern is one of multiple alternative time-frequency resource patterns predefined by the protocol or configured by RRC. For example, the pattern might be a specific PRB for a specific symbol within each slot. Optionally, the time-frequency resource pattern configuration is pool (or BWP, carrier) configuration, and / or UE group-based configuration. For example, if the network-side device configures pattern 1, pattern 2, and pattern 3 for pool 1, and the time-frequency resource of PSSCH is pattern 1, and the second UE sends a side link indication signal, the side link indication signal carries information indicating pattern 1, and the protocol stipulates that the N slots after the side link indication signal are the corresponding indication windows, then the first UE can use pattern 2 or pattern 3 to send within the window based on the detected side link indication signal sent by the second UE, thereby avoiding resource collision between the first UE and the second UE.

[0146] Here, the time-domain, frequency-domain, or code-domain resources of the PSCCH or PSSCH indicated in the side-link indication signal can be quickly determined through various methods such as indexing and pattern information, thereby improving the efficiency of PSCCH or PSSCH resource determination.

[0147] For the second type of first information mentioned above, the first information is identification information, that is, the side link indication signal may include the UE identifier, which may be the identifier of the first UE at the receiving end or the identifier of the second UE at the sending end.

[0148] As an optional embodiment, the UE identifier includes a UE identifier ID or a UE group identifier ID;

[0149] The business identifier includes at least one of the following:

[0150] The destination ID for the business;

[0151] The source ID of the business;

[0152] Business priority or business packet delay budget (PDB);

[0153] The transmission type of the service.

[0154] The service identifier refers to the specific service being performed by the UE, such as voice service, video service, etc. The transmission type of the aforementioned service can include broadcast, multicast, or unicast.

[0155] By setting different UE identifiers, the first UE can quickly determine the origin of the side link indication signal, thereby improving the transmission efficiency of the side link indication signal.

[0156] Regarding the third type of first information mentioned above, this first information is transmission information, that is, the information transmitted in the side link indication signal. As an optional embodiment, the transmission information may include at least one of the following:

[0157] Demodulation reference signal DMRS pattern;

[0158] Number of DMRS ports;

[0159] Modulation and coding scheme (MCS);

[0160] Side link control information in SCI format;

[0161] PSFCH indication.

[0162] Optionally, the sidelink indication signal carries a DMRS pattern, which can assist the first UE in demodulating the sidelink indication signal using the demodulation reference signal corresponding to the DMRS pattern, or in demodulating the subsequently received PSCCH or PSSCH using the demodulation reference signal corresponding to the DMRS pattern.

[0163] Optionally, the number of DMRS ports refers to the number of DMRS ports, which is the number of input or output ports of the demodulation reference signal. The number of DMRS ports carried in the side link indicator signal indicates how many signals can be demodulated.

[0164] Optionally, the side link indication signal carries an MCS, which can assist the first UE in modulating the side link indication signal with the modulation and coding scheme corresponding to the MCS, or in modulating the PSCCH or PSSCH with the modulation and coding scheme corresponding to the MCS.

[0165] Optionally, the sidelink indication signal carries the SCI format, which makes it easier for the first UE to accurately parse the required information from the SCI.

[0166] PSFCH is the Physical Sidelink Feedback Channel. The sidelink indication signal carries the PSFCH indication, which makes it easier for the first UE to quickly obtain information fed back by other UEs (such as the second UE).

[0167] Regarding the fourth type of first information mentioned above, this first information is indication information. This indication information is used to instruct the first UE to perform a target operation, which includes: receiving PSCCH or PSSCH, or not receiving PSCCH or PSSCH, or demodulating PSCCH or PSSCH, or not demodulating PSCCH or PSSCH. Optionally, the indication information may occupy one bit, where 0 indicates not receiving PSCCH or PSSCH, or not demodulating PSCCH or PSSCH, and 1 indicates receiving PSCCH or PSSCH, or demodulating PSCCH or PSSCH.

[0168] In this embodiment, the side link indication signal is used to indicate first information, which includes various types of information such as time and frequency code resources, identification information, transmission information and indication information. This allows the first UE to perform different actions based on different first information.

[0169] In one exemplary embodiment, the above method may further include the following steps:

[0170] The received power of the sidelink indication signal is determined based on at least one of the following:

[0171] The sequence length of the side link indicator signal, the number of encoded bits of the side link indicator signal, the encoding method of the side link indicator signal, and the amount of time and frequency resources occupied by the side link indicator signal.

[0172] Specifically, after receiving the sidelink indication signal, the first UE can detect the sidelink indication signal and obtain at least one of the following: the sequence length of the sidelink indication signal, the number of coded bits of the sidelink indication signal, the encoding method of the sidelink indication signal, and the size of the time and frequency resources occupied by the sidelink indication signal. Then, it can determine the received power of the sidelink indication signal based on at least one of the following: the sequence length of the sidelink indication signal, the number of coded bits of the sidelink indication signal, the encoding method of the sidelink indication signal, and the size of the time and frequency resources occupied by the sidelink indication signal.

[0173] In this embodiment, the receiving power of the sidelink indication signal is determined based on the information of the sidelink indication signal, thereby measuring the receiving performance of the first UE.

[0174] The above embodiments illustrate that the sidelink indicator signal is used to indicate the first information. There are two ways for the sidelink indicator signal to indicate the first information: one is implicit indication, and the other is explicit indication (also known as explicit indication). The following embodiments will describe these two indication methods respectively.

[0175] First, let's explain the implicit indication method of the side link indicator signal indicating the first information.

[0176] In one exemplary embodiment, the aforementioned sidelink indication signal is associated with the PSCCH or PSSCH.

[0177] Among them, the time domain resources, frequency domain resources, or code domain resources of PSCCH or PSSCH in the first information are usually indicated by implicit indication. That is, the association between the side link indication signal and PSCCH or PSSCH can be predefined by the network side device configuration or protocol. Then, the transmission resources of PSCCH or PSSCH can be determined by the side link indication signal based on the association.

[0178] As an optional embodiment, the association relationship includes at least one of the following:

[0179] 1. The side link indicator signal is configured separately or jointly with PSCCH or PSSCH;

[0180] 2. The transmission resources of the side link indicator signal do not overlap with the transmission resources of PSCCH or PSSCH, or at least partially overlap;

[0181] 3. The correspondence between the side link indicator signal and PSCCH or PSSCH includes any one-to-one, one-to-many, or many-to-one relationships;

[0182] 4. The transmission resource set of the side link indication signal is associated with the transmission resource set of PSCCH or PSSCH;

[0183] 5. The time-domain, frequency-domain, or code-domain resources of the side link indicator signal are related to the time-domain, frequency-domain, or code-domain resources of the PSCCH or PSSCH.

[0184] For the first type of association, the transmission resources of the sidelink indication signal and the transmission resources of the PSCCH or PSSCH can be configured separately, or they can be configured jointly. When configuring separately, the association between the transmission resources of the sidelink indication signal and the transmission resources of the PSCCH or PSSCH can be determined by the association between the first feature corresponding to the sidelink indication signal and the second feature corresponding to the PSCCH or PSSCH. The first and second features can be, for example, at least one of UE ID, UE group ID, service source ID, service destination ID, and member ID.

[0185] For the second type of association, when configuring the transmission resources of the side link indicator signal and the transmission resources of PSCCH or PSSCH, the side link indicator signal and PSCCH or PSSCH can be configured with non-overlapping resources, such as the side link indicator signal and PSCCH or PSSCH in different pools or BWPs or sub-channels or PRBs or sub-PRBs or REs or slots or sub-frames or symbols.

[0186] You can also configure overlapping resources between the side link indicator signal and the PSCCH or PSSCH. This overlap can be full or partial. When the transmission resources of the side link indicator signal overlap with the transmission resources of the PSCCH or PSSCH, the transmission resources of the side link indicator signal can be rate-matched or punctured using the transmission resources of the PSCCH or PSSCH. Alternatively, the transmission resources of the side link indicator signal can be rate-matched or punctured using the transmission resources of the PSCCH or PSSCH.

[0187] The third type of association may include a one-to-one, one-to-many, or many-to-one correspondence between the side link indicator signal and the PSCCH or PSSCH, or it may include a one-to-one, one-to-many, or many-to-one correspondence between the transmission resources of the side link indicator signal and the transmission resources of the PSCCH or PSSCH.

[0188] For the fourth type of association, for example, the association between the pool (or carrier) of the sidelink indication signal and the pool (or carrier) of the PSCCH or PSSCH can be configured. Optionally, the transmission resources of the sidelink indication signal and the transmission resources of the PSCCH or PSSCH are in the same resource pool (or carrier, BWP, sub-channel, RB set), and / or in the same slot (or subframe, half-frame, radio frame). Here, resource pool refers to a resource pool, and RB set refers to a set of resource blocks.

[0189] For the fifth type of association, the association between the time-domain, frequency-domain, or code-domain resources of the side link indicator signal and the time-domain, frequency-domain, or code-domain resources of the PSCCH or PSSCH can be configured.

[0190] Optionally, the lowest, highest, or specific PRB in the frequency domain of the PSCCH or PSSCH can be determined using the PRB. Alternatively, the minimum, maximum, or specific slot in the time domain of the PSCCH or PSSCH can also be determined using the sidelink indicator signal. For example, this could be all slots from the slot containing the sidelink indicator signal to the specified position window; or all slots within the sensing window starting from the specified position; or all slots from the sensing window to the specified position.

[0191] The above-mentioned configuration of various associations between the side link indicator signal and the PSCCH or PSSCH facilitates the transmission of the side link indicator signal and the PSCCH or PSSCH.

[0192] Furthermore, regarding the transmission resources of the aforementioned PSCCH or PSSCH, as an optional embodiment, the method for determining the transmission resources of the PSCCH or PSSCH includes at least one of the following:

[0193] 1. Determine the time-domain or frequency-domain position of the PSCCH or PSSCH based on the time-domain or frequency-domain position of the side link indicator signal;

[0194] 2. Determine the time domain position of PSCCH or PSSCH based on the time domain position of the side link indicator signal and the preset time domain offset, or determine the frequency domain position of PSCCH or PSSCH based on the frequency domain position of the side link indicator signal and the preset frequency domain offset.

[0195] For the first determination method, the time domain (or frequency domain) position of PSCCH or PSSCH is determined by the time domain (or frequency domain) position of the side link indicator signal.

[0196] For example, slot x corresponds to slot y, and the time domain position of slot y can be determined by the time domain position of slot x; or slot x corresponds to slots y1, y2, and y3, and the time domain position of slots y1, y2, and y3 can be determined by the time domain position of slot x.

[0197] Sub-channel x corresponds to sub-channel y, and the frequency domain position of sub-channel y can be determined by the frequency domain position of sub-channel x; or sub-channel x corresponds to sub-channels y1, y2, and y3, and the frequency domain positions of sub-channels y1, y2, and y3 can be determined by the frequency domain position of sub-channel x.

[0198] The interval between slot x and slot y (or y1, y2, y3) must be at least greater than (or equal to) the UE's processing time for the sidelink indication signal, and / or at least greater than (or equal to) the wake-up time of the PSCCH or PSSCH receiver. Therefore, the relative positions of slot x and slot y (or y1, y2, y3) can be determined based on the UE's processing time for the sidelink indication signal and / or the wake-up time of the PSCCH or PSSCH receiver. Then, the time-frequency domain positions of slot y (or y1, y2, y3) are determined based on the time-frequency domain position obtained from slot x.

[0199] For the second determination method, the time domain (or frequency domain) position of the PSCCH or PSSCH is determined by the time domain (or frequency domain) position of the sidelink indication signal and a preset time domain (frequency domain) offset. The preset time domain (frequency domain) offset can be protocol-defined or configured by the control node. Optionally, the time domain offset must be at least greater than (or equal to) the UE's processing time for the sidelink indication signal, and / or at least greater than (or equal to) the wake-up time of the PSCCH or PSSCH receiver. Therefore, the time domain offset can be determined based on the UE's processing time for the sidelink indication signal and / or the wake-up time of the PSCCH or PSSCH receiver.

[0200] For example, slot x + slot offset = slot y;

[0201] slot x+slot{offset1, offset2, offset 3}=slot{y1, y2, y3};

[0202] sub-channel(or PRB, pool)x + sub-channel(or PRB, pool)offset = sub-channel(or PRB, pool)y.

[0203] Wherein, slot offset is the time slot offset.

[0204] In this embodiment, there is a correlation between the side link indication signal and the PSCCH or PSSCH, which allows the PSCCH or PSSCH to be determined quickly through the side link indication signal, thereby improving the transmission efficiency of signals or information between UEs.

[0205] Next, we will explain the explicit indication method of the side link indicator signal indicating the first information.

[0206] In one exemplary embodiment, the side link indication signal indicates the first information in at least one of the following ways:

[0207] 1. The first information is indicated by the sequence corresponding to the side link indication signal; that is, the meaning of the first information corresponding to each sequence is predefined by the protocol or pre-configured by the network-side device. For example, the sequence index 1 corresponds to UE group1, and the first cyclic shift corresponds to the first priority, etc.

[0208] 2. The first information is indicated by the coded bits corresponding to the side link indicator signal.

[0209] 3. The first information is indicated by the sequence and coded bits corresponding to the side link indicator signal. That is, the protocol predefines the meaning of the first information corresponding to the sequence. For example, the first sequence corresponds to a side link indicator signal that carries coded bits, while the second sequence corresponds to a side link indicator signal that does not carry coded bits.

[0210] In addition, as an optional embodiment, the indication method of the above-mentioned side link indication signal indicating the first information can be either implicit indication or explicit indication, or it can include both implicit indication and explicit indication. For example, if the first information includes the transmission resources and priority of PSSCH or PSCCH, then the priority can be explicitly indicated by the sequence of the side link indication signal, and the transmission resources of PSSCH or PSCCH can be implicitly indicated by the sequence of the side link indication signal.

[0211] In this embodiment, the first information is explicitly indicated by the side link indication signal, which makes it easier for the UE to quickly obtain the first information through the side link indication signal, thereby improving the efficiency of first information acquisition and thus improving the transmission efficiency of signals or information between UEs.

[0212] After the second UE sends a side link indication signal to the first UE, it can send PSCCH and / or PSSCH to the first UE at certain intervals, and then the first UE can receive PSCCH and / or PSSCH. The following embodiment describes the process of the first UE receiving PSCCH and / or PSSCH.

[0213] In one exemplary embodiment, the above method may further include the following steps:

[0214] After receiving the side link indication signal, the system receives the PSCCH and / or PSSCH sent by the second UE at least once the interval.

[0215] After the second UE sends a sidelink indication signal to the first UE, it may send PSCCH and / or PSSCH to the first UE at least a first time interval. Upon receiving the sidelink indication signal, the first UE may receive PSCCH and / or PSSCH at at least a first time interval. This first time interval is related to the switching time of the first UE's receiver, which is the time it takes for the first UE's receiver to switch from a low-power receiver (LR) to a master receiver (MR). Alternatively, this first time interval may be pre-configured to the first UE or the second UE by the network-side equipment, or, for the first UE, it may be determined by the first UE based on its own receiver switching time; for the second UE, it may be reported by the first UE to the second UE regarding its own receiver switching time.

[0216] In this embodiment, after receiving the sidelink indication signal, the first UE can receive the PSCCH and / or PSSCH sent by the second UE at least once in the first time interval. This can avoid the problem of the first UE missing the PSCCH and / or PSSCH when it has not switched from a low-power receiver to a master receiver, thereby improving the accuracy of the PSCCH and / or PSSCH received by the first UE.

[0217] The following embodiments use the information transmission method applied to the terminal at the sending end (also known as the sending terminal side, i.e., the second UE) as an example for illustration.

[0218] Figure 6 This is the second flowchart illustrating the information transmission method provided in this application; see [link / reference]. Figure 6 As shown, the method may include the following steps:

[0219] S302, the second UE sends a side link indication signal to the first UE; the side link indication signal is used to instruct the first UE to perform the target operation on the PSCCH and / or PSSCH upon receiving the side link indication signal.

[0220] The target operation includes one of the following operations: receive PSCCH or PSSCH, or do not receive PSCCH or PSSCH.

[0221] Specifically, the second UE can send a side link indication signal to the first UE. After receiving the side link indication signal, the first UE can receive the PSCCH or PSSCH based on the side link indication signal, or not receive the PSCCH or PSSCH.

[0222] For explanations of side link indication signals and target operations, please refer to the explanations of S202-S204 on the first UE side above, which will not be repeated here.

[0223] In this embodiment, after receiving the side link indication signal, the first UE can perform the target operation on the PSCCH and / or PSSCH according to the side link indication signal. In this way, the side link indication signal assists the first UE in sending and receiving control signaling or data, thereby reducing the power consumption of the UE.

[0224] In one exemplary embodiment, the second UE determines the transmission resources of the side link indication signal by at least one of the following methods:

[0225] Determined based on network-side device configuration information, protocol agreement, and DCI or SCI;

[0226] Randomly select from at least one dedicated transmission resource;

[0227] Determined based on channel occupancy.

[0228] In this embodiment, the explanation of the method by which the second UE determines the transmission resources of the side link indication signal can be found in the explanation of the method by which the first UE determines the transmission resources of the side link indication signal, which will not be repeated here.

[0229] In an exemplary embodiment, the transmission resources of the aforementioned side link indication signal include time-domain resources, and the units of these time-domain resources during resource configuration include at least one of the following: symbol; sub-time slot; time slot; millisecond; sub-symbol.

[0230] The granularity of this time-domain resource configuration includes at least one of the following: UE; UE group; carrier; BWP; cell; area; resource pool. The area may be related to the coverage range of the sidelink indication signal, and the UE group can be divided according to the UE's receiver switching capability or the UE's service type.

[0231] The resource location of this time-domain resource includes at least one of the following: periodic subframes, time slots, sub-time slots, or symbols; subframes, time slots, sub-time slots, or symbols at specific locations. For example, the time-domain resource of this sidelink indicator signal is in the first N2 symbols.

[0232] In one exemplary embodiment, the transmission resources of the aforementioned side link indication signal include frequency domain resources, and the units of the frequency domain resources in resource configuration include at least one of the following: sub-channel; physical resource block; sub-physical resource block; resource element.

[0233] The granularity of the frequency domain resources during resource configuration is the same as that of the time domain resources. For example, it may include at least one of the following: UE; UE group; carrier; BWP; cell; region; resource pool.

[0234] The resource location of this frequency domain resource includes at least one of the following:

[0235] A specific resource pool, BWP, carrier, subchannel, physical resource block, sub-physical resource block, or resource element;

[0236] Dedicated resource pool or BWP or carrier or subchannel or physical resource block or sub-physical resource block or resource element;

[0237] Periodic resource pools or BWPs or carriers or subchannels or physical resource blocks or sub-physical resource blocks or resource elements.

[0238] In one exemplary embodiment, the transmission resources of the aforementioned side link indication signal include code domain resources, and the information of the code domain resources includes at least one of the following:

[0239] The number of code domain resources;

[0240] Types of code domain resources;

[0241] The length of the sequence corresponding to the code field resource;

[0242] The length of each chip when the sequence corresponding to the code domain resource is mapped to the time domain resource;

[0243] The sequence used when sending a sidelink indication signal, and / or the sequence used when receiving a sidelink indication signal.

[0244] In this embodiment, the relevant explanation of the transmission resources of the side link indication signal can be found in the above explanation of the transmission resources of the side link indication signal on the first UE side, and will not be repeated here.

[0245] In one exemplary embodiment, the above-described sidelink indication signal is used to indicate first information, which includes at least one of the following:

[0246] At least one of the time-domain resources, frequency-domain resources, or code-domain resources of PSCCH or PSSCH;

[0247] Identification information; this identification information includes the UE identifier of the first UE, and / or the service identifier of the first UE;

[0248] Transmitting information;

[0249] Instruction information; this instruction information is used to instruct the first UE to perform the target operation.

[0250] Optionally, when the sidelink indication signal is used to indicate at least one of the time-domain resources, frequency-domain resources, or code-domain resources of the PSCCH or PSSCH, the aforementioned sidelink indication signal includes:

[0251] The lowest, highest, or specific frequency domain unit index in the frequency domain;

[0252] The index of the smallest, largest, or specific time unit in the time domain;

[0253] Index of the resource in the code domain;

[0254] Time and frequency resource map information.

[0255] Optionally, the UE identifier mentioned above includes UE ID or UE group ID;

[0256] The aforementioned business identifier includes at least one of the following:

[0257] Destination identifier for the business;

[0258] Source identifier of the business;

[0259] Business priorities or business PDB;

[0260] The transmission type of the service.

[0261] In this embodiment, for the relevant explanation of the first information, please refer to the relevant explanation of the first information on the first UE side above, and it will not be repeated here.

[0262] In one exemplary embodiment, the above method may further include the following steps:

[0263] The transmission power of the sidelink indicator signal is determined based on at least one of the following: the sequence length of the sidelink indicator signal, the number of coded bits of the sidelink indicator signal, the encoding method of the sidelink indicator signal, and the amount of time-frequency resources occupied by the sidelink indicator signal.

[0264] Specifically, when configuring the sidelink indication signal, the second UE can obtain at least one of the following: the sequence length of the sidelink indication signal, the number of coded bits of the sidelink indication signal, the encoding method of the sidelink indication signal, and the size of the time-frequency resources occupied by the sidelink indication signal. Then, it can determine the transmission power of the sidelink indication signal based on at least one of the following: the sequence length of the sidelink indication signal, the number of coded bits of the sidelink indication signal, the encoding method of the sidelink indication signal, and the size of the time-frequency resources occupied by the sidelink indication signal.

[0265] In this embodiment, the transmission power of the side link indication signal is determined based on the information of the side link indication signal, thereby measuring the transmission performance of the second UE.

[0266] In one exemplary embodiment, the aforementioned sidelink indication signal is associated with the PSCCH or PSSCH.

[0267] Optionally, the above-mentioned relationship includes at least one of the following:

[0268] The side link indication signal is configured separately or jointly with the PSCCH or PSSCH;

[0269] The transmission resources of the side link indicator signal do not overlap with the transmission resources of PSCCH or PSSCH, or at least partially overlap.

[0270] The correspondence between the side link indicator signal and the PSCCH or the PSSCH includes any one of one-to-one, one-to-many, or many-to-one relationships;

[0271] The transmission resource set of the side link indication signal is associated with the transmission resource set of the PSCCH or the PSSCH;

[0272] The time-domain, frequency-domain, or code-domain resources of the side link indicator signal are associated with the time-domain, frequency-domain, or code-domain resources of the PSCCH or the PSSCH.

[0273] Optionally, the method for determining the transmission resources of the PSCCH or PSSCH mentioned above includes at least one of the following:

[0274] Determine the time or frequency position of PSCCH or PSSCH based on the time or frequency position of the side link indicator signal.

[0275] The time domain position of the PSCCH or PSSCH is determined based on the time domain position of the side link indicator signal and a preset time domain offset, or the frequency domain position of the PSCCH or PSSCH is determined based on the frequency domain position of the side link indicator signal and a preset frequency domain offset.

[0276] In this embodiment, the relevant explanation of the association between the side link indication signal and the PSCCH or PSSCH can be found in the relevant explanation of the association on the first UE side above, and will not be repeated here.

[0277] In one exemplary embodiment, the side link indication signal indicates the first information in at least one of the following ways:

[0278] The first information is indicated by the sequence corresponding to the side link indicator signal;

[0279] The first information is indicated by the encoded bits corresponding to the side link indicator signal;

[0280] The first information is indicated by the sequence and coded bits corresponding to the side link indicator signal.

[0281] In this embodiment, for the explanation of the side link indication signal explicitly indicating the first information, please refer to the explanation of the side link indication signal explicitly indicating the first information on the first UE side, which will not be repeated here.

[0282] In one exemplary embodiment, the above method may further include the following steps:

[0283] After the second UE sends a side link indication signal to the first UE, it sends a PSCCH and / or PSSCH to the first UE at least once the interval.

[0284] The first time is related to the switching time of the first UE's receiver, which is the time it takes for the first UE's receiver to switch from a low-power receiver to a primary receiver. Optionally, the first time may be pre-configured to the second UE by the network-side device, or it may be the first UE reporting its own receiver switching time to the second UE.

[0285] In this embodiment, after the second UE sends a sidelink indication signal to the first UE, it can send PSCCH and / or PSSCH to the second UE at least once in the first time interval. This can avoid the problem of the first UE missing PSCCH and / or PSSCH when it has not switched from a low-power receiver to a master receiver, thereby improving the accuracy of the first UE receiving the PSCCH and / or PSSCH sent by the second UE.

[0286] The following examples illustrate the application of information transmission methods to network-side devices.

[0287] In one exemplary embodiment, the information transmission method may include:

[0288] Configuration information of transmission resources for sending a side link indication signal to the second UE;

[0289] The configuration information includes time-domain resources, frequency-domain resources, or code-domain resources configured for the sidelink indication signal, and / or the association between the sidelink indication signal and the PSCCH or PSSCH.

[0290] In other words, network-side devices can pre-configure the transmission resource information for the sidelink indication signal (transmission resources for sending the sidelink indication signal or transmission resources for receiving the sidelink indication signal). This may include time-domain resources, frequency-domain resources, or code-domain resources configured for the sidelink indication signal, and / or the association between the sidelink indication signal and the PSCCH or PSSCH.

[0291] After configuring the transmission resource configuration information for the sidelink indication signal, the network-side device can send this configuration information to the second UE. The second UE can determine the sidelink indication signal based on this configuration information and then send the sidelink indication signal to the first UE. After receiving the sidelink indication signal, the first UE can perform a target operation on the PSCCH or PSSCH based on the sidelink indication signal. This target operation can be an operation performed on information or data on the PSCCH and / or PSSCH channels. For example, it can include receiving control information on the PSCCH and / or receiving data on the PSSCH, or not receiving control information on the PSCCH and / or not receiving data on the PSSCH. Receiving control information on the PSCCH can include demodulating control information on the PSCCH and / or demodulating data on the PSSCH, while not receiving control information on the PSCCH and / or not receiving data on the PSSCH can include not demodulating control information on the PSCCH and / or not demodulating data on the PSSCH.

[0292] For explanations of side link indication signals and target operations, please refer to the explanations of S202-S204 on the first UE side above, which will not be repeated here.

[0293] In this embodiment, after receiving the side link indication signal, the first UE can perform the target operation on the PSCCH and / or PSSCH according to the side link indication signal. In this way, the side link indication signal assists the first UE in sending and receiving control signaling or data, thereby reducing the power consumption of the UE.

[0294] In an exemplary embodiment, the transmission resources of the aforementioned side link indication signal include time-domain resources, and the units of these time-domain resources during resource configuration include at least one of the following: symbol; sub-time slot; time slot; millisecond; sub-symbol.

[0295] The granularity of this time-domain resource configuration includes at least one of the following: UE; UE group; carrier; BWP; cell; area; resource pool. The area may be related to the coverage range of the sidelink indication signal, and the UE group can be divided according to the UE's receiver switching capability or the UE's service type.

[0296] The resource location of this time-domain resource includes at least one of the following: periodic subframes, time slots, sub-time slots, or symbols; subframes, time slots, sub-time slots, or symbols at specific locations. For example, the time-domain resource of this sidelink indicator signal is in the first N2 symbols.

[0297] In one exemplary embodiment, the transmission resources of the aforementioned side link indication signal include frequency domain resources, and the units of the frequency domain resources in resource configuration include at least one of the following: sub-channel; physical resource block; sub-physical resource block; resource element.

[0298] The granularity of the frequency domain resources during resource configuration is the same as that of the time domain resources. For example, it may include at least one of the following: UE; UE group; carrier; BWP; cell; region; resource pool.

[0299] The resource location of this frequency domain resource includes at least one of the following:

[0300] A specific resource pool, BWP, carrier, subchannel, physical resource block, sub-physical resource block, or resource element;

[0301] Dedicated resource pool or BWP or carrier or subchannel or physical resource block or sub-physical resource block or resource element;

[0302] Periodic resource pools or BWPs or carriers or subchannels or physical resource blocks or sub-physical resource blocks or resource elements.

[0303] In one exemplary embodiment, the transmission resources of the aforementioned side link indication signal include code domain resources, and the information of the code domain resources includes at least one of the following:

[0304] The number of code domain resources;

[0305] Types of code domain resources;

[0306] The length of the sequence corresponding to the code field resource;

[0307] The length of each chip when the sequence corresponding to the code domain resource is mapped to the time domain resource;

[0308] The sequence used when sending a sidelink indication signal, and / or the sequence used when receiving a sidelink indication signal.

[0309] In this embodiment, the relevant explanation of the transmission resources of the side link indication signal can be found in the above explanation of the transmission resources of the side link indication signal on the first UE side, and will not be repeated here.

[0310] In one exemplary embodiment, the above-described sidelink indication signal is used to indicate first information, which includes at least one of the following:

[0311] At least one of the time-domain resources, frequency-domain resources, or code-domain resources of PSCCH or PSSCH;

[0312] Identification information; this identification information includes the UE identifier of the first UE, and / or the service identifier of the first UE;

[0313] Transmitting information;

[0314] Instruction information; this instruction information is used to instruct the first UE to perform the target operation.

[0315] Optionally, when the sidelink indication signal is used to indicate at least one of the time-domain resources, frequency-domain resources, or code-domain resources of the PSCCH or PSSCH, the aforementioned sidelink indication signal includes:

[0316] The lowest, highest, or specific frequency domain unit index in the frequency domain;

[0317] The index of the smallest, largest, or specific time unit in the time domain;

[0318] Index of the resource in the code domain;

[0319] Time and frequency resource map information.

[0320] Optionally, the UE identifier mentioned above includes UE ID or UE group ID;

[0321] The aforementioned business identifier includes at least one of the following:

[0322] Destination identifier for the business;

[0323] Source identifier of the business;

[0324] Business priorities or business PDB;

[0325] The transmission type of the service.

[0326] In this embodiment, for the relevant explanation of the first information, please refer to the relevant explanation of the first information on the first UE side above, and it will not be repeated here.

[0327] In one exemplary embodiment, the aforementioned sidelink indication signal is associated with the PSCCH or PSSCH.

[0328] Optionally, the above-mentioned relationship includes at least one of the following:

[0329] The side link indication signal is configured separately or jointly with the PSCCH or PSSCH;

[0330] The transmission resources of the side link indicator signal do not overlap with the transmission resources of PSCCH or PSSCH, or at least partially overlap.

[0331] The correspondence between the side link indicator signal and PSCCH or PSSCH can be one-to-one, one-to-many, or many-to-one.

[0332] The transmission resource set of the side link indicator signal is associated with the transmission resource set of PSCCH or PSSCH;

[0333] The time-domain, frequency-domain, or code-domain resources of the sidelink indicator signal are related to the time-domain, frequency-domain, or code-domain resources of the PSCCH or PSSCH.

[0334] Optionally, the method for determining the transmission resources of the PSCCH or PSSCH mentioned above includes at least one of the following:

[0335] Determine the time or frequency position of PSCCH or PSSCH based on the time or frequency position of the side link indicator signal.

[0336] The time domain position of the PSCCH or PSSCH is determined based on the time domain position of the side link indicator signal and a preset time domain offset, or the frequency domain position of the PSCCH or PSSCH is determined based on the frequency domain position of the side link indicator signal and a preset frequency domain offset.

[0337] In this embodiment, the relevant explanation of the association between the side link indication signal and the PSCCH or PSSCH can be found in the relevant explanation of the association on the first UE side above, and will not be repeated here.

[0338] In one exemplary embodiment, the side link indication signal indicates the first information in at least one of the following ways:

[0339] The first information is indicated by the sequence corresponding to the side link indicator signal;

[0340] The first information is indicated by the encoded bits corresponding to the side link indicator signal;

[0341] The first information is indicated by the sequence and coded bits corresponding to the side link indicator signal.

[0342] In this embodiment, for the explanation of the side link indication signal explicitly indicating the first information, please refer to the explanation of the side link indication signal explicitly indicating the first information on the first UE side, which will not be repeated here.

[0343] In one exemplary embodiment, the above method further includes:

[0344] The network-side device sends time configuration information to the first UE, or sends time configuration information to the second UE;

[0345] The time configuration information includes a first time, which is the interval between the second UE sending a side link indication signal to the first UE and then sending a PSCCH and / or PSSCH to the first UE, or the interval between the first UE receiving the side link indication signal sent by the second UE and then receiving the PSCCH and / or PSSCH sent by the first UE.

[0346] In this embodiment, for the relevant explanations of the first time, please refer to the relevant explanations of the first UE side or the second UE side for the first time, which will not be repeated here.

[0347] The following specific embodiments illustrate the transmission resource configuration of the above-mentioned side link indication signal, the association between the side link indication signal and PSCCH and / or PSSCH, and the behavior of the side link indication signal instructing the UE.

[0348] Example 1: Resource Configuration of Side Link Indication Signal

[0349] 1. The configuration of time-frequency resources for the side link indicator signal includes:

[0350] The size of the basic unit in the frequency domain of each side link indicator signal; the number of basic units in the frequency domain of the side link indicator signal (the number of basic units in the frequency domain of the side link indicator signal can be the same as the number of basic units in the frequency domain of PSCCH / PSSCH; the number of basic units in the frequency domain of the side link indicator signal can be a fixed [1] or [N] units);

[0351] The size of the time-domain basic unit of each sidelink indicator signal; the period of the time-domain basic unit; the number of time-domain basic units in each period, etc.

[0352] 2. The configuration of the code domain resources for the side link indicator signal includes (including the sending and receiving behavior of the side link indicator signal sequence)

[0353] The protocol specifies / configures the number of code field resources, sequence types, etc.

[0354] Optionally, the number of code domain resources can be 1, and the UE can transmit the same code on the same time and frequency resources; then, for an RX UE, demodulating the sequence can identify whether the UE is transmitting a side link indication signal sequence, or identify whether it is transmitting PSCCH / PSSCH on the PSCCH / PSSCH resource associated with the side link indication signal.

[0355] For example, if the sidelink indication signal resource is associated with all PSCCH / PSSCH within a certain time window, then the RX UE / sensing UE can determine whether to demodulate PSCCH / PSSCH within that time window based on demodulating the sidelink indication signal sequence on the corresponding sidelink indication signal resource, thereby achieving power saving.

[0356] The protocol specifies / configures the code length of the side link indicator signal sequence, and configures an appropriate code length according to the coverage requirements of PSCCH / PSSCH or the side link indicator signal.

[0357] The protocol specifies / configures the sequence of sidelink indication signals to map the length of each chip when mapping to time-domain resources, in order to avoid inter-chip interference caused when chips sent by UEs at different locations arrive at the RX UE. For example, the chip length is equal to the symbol length.

[0358] 3. The sequence of side link indication signals can be configured per UE / per UE group.

[0359] Configure the sequence used by the UE when sending the sidelink indication signal. For the RX UE, the RX UE needs to blindly demodulate the sequence of the corresponding TX UE's sidelink indication signal. Only if the sequence of the corresponding TX UE's sidelink indication signal is demodulated will the RX UE demodulate the PSCCH / PSSCH associated with that sidelink indication signal.

[0360] Alternatively, configure the sequence used by the UE when receiving the sidelink indication signal. The UE only needs to demodulate the sequence of the corresponding sidelink indication signal on the time-frequency resource of the sidelink indication signal. If the sequence of the corresponding sidelink indication signal is demodulated, the UE will demodulate the PSCCH / PSSCH associated with the sidelink indication signal.

[0361] The UE can also obtain the sequence of side link indication signals sent / received by the UE from a set of configured side link indication signals based on the UE's information (such as UE ID, source ID, destination ID, member ID, etc.).

[0362] The UE can also obtain the sequence of sidelink indication signals sent / received by the UE from a configured set of sidelink indication signals based on information of the peer UE (e.g., UE ID, source ID, destination ID, member ID, etc.).

[0363] The meaning of the peer UE is: if the UE is TX UE, the peer UE is RX; if the UE is RX UE, the peer UE is TX UE.

[0364] 4. The time-frequency location of the side link indication signal is configured per UE / per UE group.

[0365] When the sidelink indication signal resource is configured per UE / UE group, the resources of different UEs can be distinguished by the UE / UE group ID, corresponding to different sidelink indication signal resources.

[0366] Configure the time-frequency resources used by the UE when transmitting sidelink indication signals. For the RX UE, the RX UE needs to blindly demodulate the sequence of sidelink indication signals of the corresponding TX UE. Only if the sequence of sidelink indication signals of the corresponding TX UE is successfully demodulated will the RX UE demodulate the PSCCH / PSSCH associated with that sidelink indication signal.

[0367] Alternatively, configure the time-frequency resources used by the UE when receiving the sidelink indication signal. The UE only needs to demodulate the sequence of the corresponding sidelink indication signal on the time-frequency resources of the sidelink indication signal. Only if the sequence of the corresponding sidelink indication signal is demodulated will the UE demodulate the PSCCH / PSSCH associated with the sidelink indication signal.

[0368] When the sidelink indication signal resource is configured per UE per carrier, one sidelink indication signal resource is configured within a carrier, and the resources for different UEs can be distinguished by the UE ID, corresponding to different sidelink indication signal resources.

[0369] Example 2: The correlation between the resources of the side link indication signal and the resources of PSCCH / PSSCH

[0370] 1. The mapping relationship between side link indicator signal resources and PSCCH / PSSCH resources is configured or predefined through the protocol.

[0371] Sidelink indicator signal resources and PSCCH / PSSCH resources can be configured separately; they can be non-overlapping resources or partially overlapping time-frequency resources. Alternatively, sidelink indicator signal resources and PSCCH / PSSCH resources can be configured together.

[0372] Side link indicator signal resources and PSCCH / PSSCH resources can be configured in a one-to-one, one-to-many, or many-to-one manner.

[0373] 2. Determine the time domain (frequency domain) position of PSCCH / PSSCH by the time domain (frequency domain) position of the side link indicator signal: slot x corresponds to slot y; slot x corresponds to slot y1, y2, y3. sub-channel x corresponds to sub-channel y(y1, y2, y3);

[0374] The interval between Slot x and Slot y (y1, y2, y3) is at least greater than or equal to the processing time of the UE for the side link indication signal and / or the wake-up time of the PSCCH / PSSCH receiver. The relative positional relationship between Slot x and Slot y (y1, y2, y3) can be determined based on the processing time of the side link indication signal and / or the wake-up time of the PSCCH / PSSCH receiver.

[0375] 3. Determine the time (frequency) position of the PSCCH by the time (frequency) position of the side link indicator signal and the fixed / configured time offset: slot x + slot offset = slot y; slot x + slot{offset1, offset2, offset3} = slot{y1, y2, y3}; sub-channel / PRB / pool x + sub-channel / PRB / pool offset = sub-channel / PRB / pool y.

[0376] The time offset is agreed upon by the protocol or configured by the control node.

[0377] The time offset is at least greater than / equal to the UE's processing time of the sidelink indication signal and / or the wake-up time of the PSCCH / PSSCH receiver, and can be determined based on the processing time of the sidelink indication signal and / or the wake-up time of the PSCCH / PSSCH receiver.

[0378] 4. Optionally, the resource locations of the side link indication signal and PSCCH / PSSCH can only be in the same resource pool / sub-channel / BWP / carrier / RB set and / or the same slot / subframe / half-frame / radio frame.

[0379] 5. Optionally, the lowest / highest / specific position of the PRB in the frequency domain where the PSCCH / PSSCH is located can be determined by the PRB.

[0380] 6. Optionally, the minimum / maximum / specific slot in the time domain of the PSCCH / PSSCH can be determined using a side-link indication signal. For example, this may include:

[0381] From the slot where the side link indicator signal is located to all slots within the specified position window.

[0382] All slots within the sensing window range starting from the specified position.

[0383] All slots within the range from the sensing window to the specified position.

[0384] 7. The side link indication signal can indicate the resource reservation information of PSCCH / PSSCH. The side link indication signal carries the time and frequency location-related indication information sent by PSCCH / PSSCH, such as the time and frequency resource location, the index number of the time and frequency resource location, and the pattern information corresponding to the time and frequency resource location.

[0385] 8. The time-frequency position of PSCCH / PSSCH is one of the randomly selected patterns. The pattern is one of multiple alternative time-frequency resource patterns predefined by the protocol or configured by RRC. For example, the pattern is a specific PRB for a specific symbol within each slot.

[0386] 9. Optionally, the time-frequency resource pattern can be configured as a pool / BWP / carrier or based on a UE group.

[0387] For example, if the network configures pattern 1, pattern 2, and pattern 3 for pool 1, and the time-frequency resource of PSSCH is pattern 1, the second UE sends a side link indication signal. The side link indication signal carries information indicating pattern 1, and the protocol stipulates that the N slots after the side link indication signal are the corresponding indication windows. Then, the first UE, based on the detection of the side link indication signal sent by the second UE, uses pattern 2 or pattern 3 to send within the window.

[0388] Example 3: Side link indication signal indicates UE behavior

[0389] 1. The second UE determines the resources for the sidelink indication signal based on at least one of the following:

[0390] The protocol specifies / configures the time-frequency code resources for the sidelink indication signal;

[0391] By reading the side link indicator signal resources indicated by DCI / SCI;

[0392] The UE randomly selects within the dedicated side link indication signal resources, for example, configuring different access positions at the start of the side link indication signal time domain resources, and the UE obtains the side link indication signal resources by competing for the access channel;

[0393] The UE selects appropriate resources as sidelink indication signal resources by detecting channel occupancy.

[0394] The resources for the sidelink indication signal can be either the sidelink indication signal resources of the sending UE or the sidelink indication signal resources of the receiving UE.

[0395] 2. The second UE transmits the corresponding sidelink indication signal sequence / bit at the configured sidelink indication signal time-frequency position, and transmits PSCCH / PSSCH at the associated position.

[0396] 3. The first UE detects a sidelink indication signal and performs at least one of the following actions:

[0397] Detect / blindly detect / correlate sequences of sidelink indicator signals;

[0398] Decode the bit information of the side link indicator signal;

[0399] Detect whether the side link indicator signal carries the corresponding identification information;

[0400] Detect PSCCH / PSSCH at the corresponding time-domain and frequency-domain locations (within the time window);

[0401] If the side link indication signal carries resource reservation information, it indicates the reserved transmission resources for PSCCH / PSSCH. Resource detection is performed based on the demodulated side link indication signal, and resources are selected based on the detection results.

[0402] The information transmission method provided in this application embodiment can be executed by an entity that can be... Information transmission device In the embodiments of this application, Information transmission device Taking the execution of an information transmission method as an example, the information transmission device provided in the embodiments of this application will be described.

[0403] First, let's explain the information transmission device on the receiving terminal side.

[0404] Figure 7 This is a schematic diagram of the information transmission device on the receiving terminal side provided in this application. See also: Figure 7 As shown, the information transmission device may include:

[0405] The first receiving module 710 is used to receive the side link indication signal;

[0406] The information transmission module 720 is configured to, upon receiving the side link indication signal, perform a target operation on the side link control channel PSCCH and / or the physical side link shared channel PSSCH according to the side link indication signal. The target operation includes one of the following operations: receiving PSCCH or PSSCH, or not receiving PSCCH or PSSCH.

[0407] In an exemplary embodiment, the first UE determines the transmission resources of the side link indication signal by at least one of the following methods:

[0408] Determined based on network-side device configuration information, protocol agreement, downlink control information (DCI) or side link control information (SCI);

[0409] Randomly select from at least one dedicated transmission resource;

[0410] Determined based on channel occupancy.

[0411] In one exemplary embodiment, the transmission resources of the side link indication signal include code field resources, and the information of the code field resources includes at least one of the following:

[0412] The number of code domain resources;

[0413] The type of code domain resource;

[0414] The length of the sequence corresponding to the code field resource;

[0415] The length of each chip when the sequence corresponding to the code domain resource is mapped to the time domain resource;

[0416] The sequence used when sending the sidelink indication signal, and / or the sequence used when receiving the sidelink indication signal.

[0417] In one exemplary embodiment, the sidelink indication signal is used to indicate first information, the first information including at least one of the following:

[0418] At least one of the time-domain resources, frequency-domain resources, or code-domain resources of the PSCCH or PSSCH;

[0419] Identification information; the identification information includes the UE identifier of the first UE, and / or the service identifier of the first UE;

[0420] Transmitting information;

[0421] Instruction information; the instruction information is used to instruct the first UE to perform the target operation.

[0422] In one exemplary embodiment, the apparatus may further include:

[0423] A receive power determination module is configured to determine the receive power of the sidelink indication signal based on at least one of the following:

[0424] The sequence length of the side link indicator signal, the number of encoded bits of the side link indicator signal, the encoding method of the side link indicator signal, and the amount of time and frequency resources occupied by the side link indicator signal.

[0425] In an exemplary embodiment, when the sidelink indication signal is used to indicate at least one of the time-domain resources, frequency-domain resources, or code-domain resources of the PSCCH or the PSSCH, the sidelink indication signal includes:

[0426] The lowest, highest, or specific frequency domain unit index in the frequency domain;

[0427] The index of the smallest, largest, or specific time unit in the time domain;

[0428] Index of the resource in the code domain;

[0429] Time and frequency resource map information.

[0430] In one exemplary embodiment, the UE identifier includes a UE identifier ID or a UE group identifier ID;

[0431] The business identifier includes at least one of the following:

[0432] Destination identifier for the business;

[0433] Source identifier of the business;

[0434] Business priority or business packet delay budget (PDB);

[0435] The transmission type of the service.

[0436] In one exemplary embodiment, the sidelink indication signal is associated with the PSCCH or the PSSCH.

[0437] In one exemplary embodiment, the association includes at least one of the following:

[0438] The side link indication signal is configured separately or jointly with the PSCCH or the PSSCH;

[0439] The transmission resources of the side link indication signal do not overlap with, or at least partially overlap with, the transmission resources of the PSCCH or the PSSCH;

[0440] The correspondence between the side link indication signal and the PSCCH or PSSCH includes any one of one-to-one, one-to-many, or many-to-one relationships.

[0441] The transmission resource set of the side link indication signal is associated with the transmission resource set of the PSCCH or the PSSCH;

[0442] The time-domain, frequency-domain, or code-domain resources of the side link indication signal are associated with the time-domain, frequency-domain, or code-domain resources of the PSCCH or the PSSCH.

[0443] In one exemplary embodiment, the method for determining the transmission resources of the PSCCH or the PSSCH includes at least one of the following:

[0444] The time-domain or frequency-domain position of the PSCCH or the PSSCH is determined based on the time-domain or frequency-domain position of the side link indication signal.

[0445] The time domain position of the PSCCH or the PSSCH is determined based on the time domain position of the side link indicator signal and a preset time domain offset, or the frequency domain position of the PSCCH or the PSSCH is determined based on the frequency domain position of the side link indicator signal and a preset frequency domain offset.

[0446] In one exemplary embodiment, the sidelink indication signal indicates the first information in at least one of the following ways:

[0447] The first information is indicated by the sequence corresponding to the side link indicator signal;

[0448] The first information is indicated by the encoded bits corresponding to the side link indication signal;

[0449] The first information is indicated by the sequence corresponding to the side link indicator signal and the encoded bits.

[0450] In one exemplary embodiment, the apparatus may further include:

[0451] The information and data receiving module is used to receive the PSCCH and / or PSSCH sent by the second UE at least at a first time interval after receiving the side link indication signal;

[0452] The first time is related to the switching time of the receiver of the first UE, which is the time when the receiver of the first UE switches from a low-power receiver to a main receiver.

[0453] Next, the information transmission device on the sending terminal side will be explained.

[0454] Figure 8 This is a schematic diagram of the information transmission device on the sending terminal side provided in this application. See also: Figure 8As shown, the information transmission device may include:

[0455] The first transmitting module 810 is used to transmit a side link indication signal to the first UE; the side link indication signal is used to instruct the first UE to perform a target operation on the PSCCH and / or PSSCH upon receiving the side link indication signal;

[0456] The target operation includes one of the following operations: receiving PSCCH or PSSCH, or not receiving PSCCH or PSSCH.

[0457] In one exemplary embodiment, the second UE determines the transmission resources of the side link indication signal by at least one of the following methods:

[0458] Determined based on network-side device configuration information, protocol agreements, and DCI or SCI;

[0459] Randomly select from at least one dedicated transmission resource;

[0460] Determined based on channel occupancy.

[0461] In one exemplary embodiment, the transmission resources of the side link indication signal include code field resources, and the information of the code field resources includes at least one of the following:

[0462] The number of code domain resources;

[0463] The type of code domain resource;

[0464] The length of the sequence corresponding to the code field resource;

[0465] The length of each chip when the sequence corresponding to the code domain resource is mapped to the time domain resource;

[0466] The sequence used when sending the sidelink indication signal, and / or the sequence used when receiving the sidelink indication signal.

[0467] In one exemplary embodiment, the sidelink indication signal is used to indicate first information, the first information including at least one of the following:

[0468] At least one of the time-domain resources, frequency-domain resources, or code-domain resources of the PSCCH or PSSCH;

[0469] Identification information; the identification information includes the UE identifier of the first UE, and / or the service identifier of the first UE;

[0470] Transmitting information;

[0471] Instruction information; the instruction information is used to instruct the first UE to perform the target operation.

[0472] In one exemplary embodiment, the apparatus may further include:

[0473] A transmission power determination module is configured to determine the transmission power of the sidelink indication signal based on at least one of the following:

[0474] The sequence length of the side link indicator signal, the number of encoded bits of the side link indicator signal, the encoding method of the side link indicator signal, and the amount of time and frequency resources occupied by the side link indicator signal.

[0475] In an exemplary embodiment, when the sidelink indication signal is used to indicate at least one of the time-domain resources, frequency-domain resources, or code-domain resources of the PSCCH or the PSSCH, the sidelink indication signal includes:

[0476] The lowest, highest, or specific frequency domain unit index in the frequency domain;

[0477] The index of the smallest, largest, or specific time unit in the time domain;

[0478] Index of the resource in the code domain;

[0479] Time and frequency resource map information.

[0480] In one exemplary embodiment, the UE identifier includes a UE ID or a UE group ID;

[0481] The business identifier includes at least one of the following:

[0482] Destination identifier for the business;

[0483] Source identifier of the business;

[0484] Business priorities or business PDB;

[0485] The transmission type of the service.

[0486] In one exemplary embodiment, the sidelink indication signal is associated with the PSCCH or the PSSCH.

[0487] In one exemplary embodiment, the association includes at least one of the following:

[0488] The side link indication signal is configured separately or jointly with the PSCCH or the PSSCH;

[0489] The transmission resources of the side link indication signal do not overlap with, or at least partially overlap with, the transmission resources of the PSCCH or the PSSCH;

[0490] The correspondence between the side link indication signal and the PSCCH or PSSCH includes any one of one-to-one, one-to-many, or many-to-one relationships.

[0491] The transmission resource set of the side link indication signal is associated with the transmission resource set of the PSCCH or the PSSCH;

[0492] The time-domain, frequency-domain, or code-domain resources of the side link indication signal are associated with the time-domain, frequency-domain, or code-domain resources of the PSCCH or the PSSCH.

[0493] In one exemplary embodiment, the method for determining the transmission resources of the PSCCH or the PSSCH includes at least one of the following:

[0494] The time-domain or frequency-domain position of the PSCCH or the PSSCH is determined based on the time-domain or frequency-domain position of the side link indication signal.

[0495] The time domain position of the PSCCH or the PSSCH is determined based on the time domain position of the side link indicator signal and a preset time domain offset, or the frequency domain position of the PSCCH or the PSSCH is determined based on the frequency domain position of the side link indicator signal and a preset frequency domain offset.

[0496] In one exemplary embodiment, the sidelink indication signal indicates the first information in at least one of the following ways:

[0497] The first information is indicated by the sequence corresponding to the side link indicator signal;

[0498] The first information is indicated by the encoded bits corresponding to the side link indication signal;

[0499] The first information is indicated by the sequence corresponding to the side link indicator signal and the encoded bits.

[0500] In one exemplary embodiment, the apparatus may further include:

[0501] The information and data transmission module is used to send PSCCH and / or PSSCH to the first UE at least a first time interval after the second UE sends the side link indication signal to the first UE; the first time interval is related to the switching time of the receiver of the first UE, which is the time when the receiver of the first UE switches from a low-power receiver to a master receiver.

[0502] To reiterate, the information transmission device on the network equipment side.

[0503] Figure 9This is a schematic diagram of the information transmission device on the network device side provided in this application. See [link / reference]. Figure 9 As shown, the information transmission device may include:

[0504] The second transmitting module 910 is used to transmit configuration information of transmission resources for a side link indication signal to the second UE; the configuration information includes time-domain resources, frequency-domain resources or code-domain resources configured for the side link indication signal, and / or the association relationship between the side link indication signal and the PSCCH or PSSCH.

[0505] In the embodiments of this application Information transmission device It can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the terminal can be, but is not limited to, the type of terminal 11 listed above. Other devices can be servers, network attached storage (NAS), etc., and this application embodiment does not specifically limit them.

[0506] The information transmission device provided in this application embodiment can achieve... Figures 5 to 6 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0507] like Figure 10 As shown, this application embodiment also provides a terminal 1000, including a processor 1001 and a memory 1002. The memory 1002 stores programs or instructions that can run on the processor 1001. For example, when the terminal 1000 is a terminal, the program or instructions executed by the processor 1001 implement the various steps of the above-described information transmission method embodiment and achieve the same technical effect. When the terminal 1000 is a network-side device, the program or instructions executed by the processor 1001 implement the various steps of the above-described information transmission method embodiment and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0508] This application embodiment also provides a terminal, including 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, for example... Figure 5-6 The steps in the method embodiment shown are illustrated. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. Specifically, Figure 11 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0509] The terminal 1100 includes, but is not limited to, at least some of the following components: radio frequency unit 1101, network module 1102, audio output unit 1103, input unit 1104, sensor 1105, display unit 1106, user input unit 1107, interface unit 1108, memory 1109, and processor 1110.

[0510] Those skilled in the art will understand that the terminal 1100 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to the processor 1110 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. 11 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0511] It should be understood that, in this embodiment, the input unit 1104 may include a graphics processing unit (GPU) 11041 and a microphone 11042. The GPU 11041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1106 may include a display panel 11061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 1107 includes at least one of a touch panel 11071 and other input devices 11072. The touch panel 11071 is also called a touch screen. The touch panel 11071 may include a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, joysticks, etc., which will not be described in detail here.

[0512] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1101 can transmit it to the processor 1110 for processing; in addition, the radio frequency unit 1101 can send uplink data to the network-side device. Typically, the radio frequency unit 1101 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0513] The memory 1109 can be used to store software programs or instructions, as well as various data. The memory 1109 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1109 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1109 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0514] Processor 1110 may include one or more processing units; optionally, processor 1110 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1110.

[0515] The radio frequency unit 1101 is used to receive the side link indication signal.

[0516] Processor 1110 is configured to, after the first UE receives the side link indication signal, perform a target operation on the side link control channel PSCCH and / or physical side link shared channel PSSCH according to the side link indication signal, the target operation including one of the following operations: receiving PSCCH or PSSCH, or not receiving PSCCH or PSSCH.

[0517] Alternatively, radio frequency unit 1101 is used to send a sidelink indication signal to the first UE; the sidelink indication signal is used to instruct the first UE to perform a target operation on PSCCH and / or PSSCH upon receiving the sidelink indication signal; the target operation includes one of the following operations: receiving PSCCH or PSSCH, or not receiving PSCCH or PSSCH.

[0518] In this embodiment, after receiving the side link indication signal, the terminal can perform the target operation on the PSCCH and / or PSSCH according to the side link indication signal. In this way, the side link indication signal assists the terminal in sending and receiving control signaling or data, thereby reducing the terminal's energy consumption.

[0519] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the information transmission method of the receiving terminal side / sending terminal side in the method embodiment, and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0520] This application also provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method embodiment of the network-side device. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and achieve the same technical effects.

[0521] Specifically, embodiments of this application also provide a network-side device. For example... Figure 12 As shown, the network-side device 1200 includes: an antenna 121, a radio frequency (RF) device 122, a baseband device 123, a processor 124, and a memory 125. The antenna 121 is connected to the RF device 122. In the uplink direction, the RF device 122 receives information through the antenna 121 and transmits the received information to the baseband device 123 for processing. In the downlink direction, the baseband device 123 processes the information to be transmitted and sends it to the RF device 122. The RF device 122 processes the received information and transmits it through the antenna 121.

[0522] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 123, which includes a baseband processor.

[0523] The baseband device 123 may include, for example, at least one baseband board on which multiple chips are disposed, such as... Figure 12As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 125 via a bus interface to call the program in the memory 125 and execute the network device operation shown in the above method embodiment.

[0524] The network-side device may also include a network interface 126, such as a Common Public Radio Interface (CPRI).

[0525] Specifically, the network-side device 1200 of this embodiment further includes: instructions or programs stored in memory 125 and executable on processor 124, wherein processor 124 calls the instructions or programs in memory 125 to execute. Figure 9 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0526] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described information transmission method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0527] The processor mentioned above is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0528] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described information transmission method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0529] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0530] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described information transmission method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0531] This application also provides a wireless communication system, including: a terminal and a network-side device. The terminal can be used to perform the steps of the information transmission method described above for receiving terminal side or sending terminal side, and the network-side device can be used to perform the steps of the information transmission method described above for network-side device.

[0532] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0533] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0534] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. An information transmission method, characterized in that, include: The first terminal UE receives the side link indication signal; After receiving the side link indication signal, the first UE performs a target operation on the side link control channel PSCCH and / or physical side link shared channel PSSCH according to the side link indication signal. The target operation includes one of the following operations: receiving PSCCH or PSSCH, or not receiving PSCCH or PSSCH.

2. The method according to claim 1, characterized in that, The first UE determines the transmission resources of the side link indication signal in at least one of the following ways: Determined based on network-side device configuration information, protocol agreement, downlink control information (DCI) or side link control information (SCI); Randomly select from at least one dedicated transmission resource; Determined based on channel occupancy.

3. The method according to claim 1 or 2, characterized in that, The transmission resources of the side link indication signal include code field resources, and the information of the code field resources includes at least one of the following: The number of code domain resources; The type of code domain resource; The length of the sequence corresponding to the code field resource; The length of each chip when the sequence corresponding to the code domain resource is mapped to the time domain resource; The sequence used when sending the sidelink indication signal, and / or the sequence used when receiving the sidelink indication signal.

4. The method according to any one of claims 1 to 3, characterized in that, The side link indication signal is used to indicate first information, which includes at least one of the following: At least one of the time-domain resources, frequency-domain resources, or code-domain resources of the PSCCH or PSSCH; Identification information; the identification information includes the UE identifier of the first UE, and / or the service identifier of the first UE; Transmitting information; Instruction information; The instruction information is used to instruct the first UE to perform the target operation.

5. The method according to claim 4, characterized in that, The method further includes: The received power of the sidelink indication signal is determined based on at least one of the following: The sequence length of the side link indicator signal, the number of encoded bits of the side link indicator signal, the encoding method of the side link indicator signal, and the amount of time and frequency resources occupied by the side link indicator signal.

6. The method according to claim 4, characterized in that, When the sidelink indication signal is used to indicate at least one of the time-domain resources, frequency-domain resources, or code-domain resources of the PSCCH or the PSSCH, the sidelink indication signal includes: The lowest, highest, or specific frequency domain unit index in the frequency domain; The index of the smallest, largest, or specific time unit in the time domain; Index of the resource in the code domain; Time and frequency resource map information.

7. The method according to claim 4, characterized in that, The UE identifier includes UE identifier ID or UE group identifier ID; The business identifier includes at least one of the following: Destination identifier for the business; Source identifier of the business; Business priority or business packet delay budget (PDB); The transmission type of the service.

8. The method according to any one of claims 1 to 4, characterized in that, The side link indication signal is associated with the PSCCH or the PSSCH.

9. The method according to claim 8, characterized in that, The association includes at least one of the following: The side link indication signal is configured separately or jointly with the PSCCH or the PSSCH; The transmission resources of the side link indication signal do not overlap with the transmission resources of the PSCCH or the PSSCH, or at least partially overlap. The correspondence between the side link indication signal and the PSCCH or PSSCH includes any one of one-to-one, one-to-many, or many-to-one relationships. The transmission resource set of the side link indication signal is associated with the transmission resource set of the PSCCH or the PSSCH; The time-domain, frequency-domain, or code-domain resources of the side link indication signal are associated with the time-domain, frequency-domain, or code-domain resources of the PSCCH or the PSSCH.

10. The method according to claim 8, characterized in that, The method for determining the transmission resources of the PSCCH or the PSSCH includes at least one of the following: The time-domain or frequency-domain position of the PSCCH or the PSSCH is determined based on the time-domain or frequency-domain position of the side link indication signal. The time domain position of the PSCCH or the PSSCH is determined based on the time domain position of the side link indicator signal and a preset time domain offset, or the frequency domain position of the PSCCH or the PSSCH is determined based on the frequency domain position of the side link indicator signal and a preset frequency domain offset.

11. The method according to any one of claims 4 to 10, characterized in that, The side link indication signal indicates the first information in at least one of the following ways: The first information is indicated by the sequence corresponding to the side link indicator signal; The first information is indicated by the encoded bits corresponding to the side link indication signal; The first information is indicated by the sequence corresponding to the side link indicator signal and the encoded bits.

12. The method according to any one of claims 1 to 11, characterized in that, The method further includes: After receiving the side link indication signal, the PSCCH and / or PSSCH sent by the second UE are received at least once the interval is first time; The first time is related to the switching time of the receiver of the first UE, which is the time when the receiver of the first UE switches from a low-power receiver to a main receiver.

13. An information transmission method, characterized in that, include: The second UE sends a side link indication signal to the first UE; The side link indication signal is used to instruct the first UE to perform the target operation on the PSCCH and / or PSSCH when the side link indication signal is received; The target operation includes one of the following operations: receiving PSCCH or PSSCH, or not receiving PSCCH or PSSCH.

14. The method according to claim 13, characterized in that, The second UE determines the transmission resources of the side link indication signal in at least one of the following ways: Determined based on network-side device configuration information, protocol agreements, and DCI or SCI; Randomly select from at least one dedicated transmission resource; Determined based on channel occupancy.

15. The method according to claim 13 or 14, characterized in that, The transmission resources of the side link indication signal include code field resources, and the information of the code field resources includes at least one of the following: The number of code domain resources; The type of code domain resource; The length of the sequence corresponding to the code field resource; The length of each chip when the sequence corresponding to the code domain resource is mapped to the time domain resource; The sequence used when sending the sidelink indication signal, and / or the sequence used when receiving the sidelink indication signal.

16. The method according to any one of claims 13 to 15, characterized in that, The side link indication signal is used to indicate first information, which includes at least one of the following: At least one of the time-domain resources, frequency-domain resources, or code-domain resources of the PSCCH or PSSCH; Identification information; the identification information includes the UE identifier of the first UE, and / or the service identifier of the first UE; Transmitting information; Instruction information; The instruction information is used to instruct the first UE to perform the target operation.

17. The method according to claim 16, characterized in that, The method further includes: The transmission power of the sidelink indication signal is determined based on at least one of the following: The sequence length of the side link indicator signal, the number of encoded bits of the side link indicator signal, the encoding method of the side link indicator signal, and the amount of time and frequency resources occupied by the side link indicator signal.

18. The method according to claim 16, characterized in that, When the sidelink indication signal is used to indicate at least one of the time-domain resources, frequency-domain resources, or code-domain resources of the PSCCH or the PSSCH, the sidelink indication signal includes: The lowest, highest, or specific frequency domain unit index in the frequency domain; The index of the smallest, largest, or specific time unit in the time domain; Index of the resource in the code domain; Time and frequency resource map information.

19. The method according to claim 16, characterized in that, The UE identifier includes UE ID or UE group ID; The business identifier includes at least one of the following: Destination identifier for the business; Source identifier of the business; Business priorities or business PDB; The transmission type of the service.

20. The method according to any one of claims 13 to 16, characterized in that, The side link indication signal is associated with the PSCCH or the PSSCH.

21. The method according to claim 20, characterized in that, The association includes at least one of the following: The side link indication signal is configured separately or jointly with the PSCCH or the PSSCH; The transmission resources of the side link indication signal do not overlap with the transmission resources of the PSCCH or the PSSCH, or at least partially overlap. The correspondence between the side link indication signal and the PSCCH or PSSCH includes any one of one-to-one, one-to-many, or many-to-one relationships. The transmission resource set of the side link indication signal is associated with the transmission resource set of the PSCCH or the PSSCH; The time-domain, frequency-domain, or code-domain resources of the side link indication signal are associated with the time-domain, frequency-domain, or code-domain resources of the PSCCH or the PSSCH.

22. The method according to claim 20, characterized in that, The method for determining the transmission resources of the PSCCH or the PSSCH includes at least one of the following: The time-domain or frequency-domain position of the PSCCH or the PSSCH is determined based on the time-domain or frequency-domain position of the side link indication signal. The time domain position of the PSCCH or the PSSCH is determined based on the time domain position of the side link indicator signal and a preset time domain offset, or the frequency domain position of the PSCCH or the PSSCH is determined based on the frequency domain position of the side link indicator signal and a preset frequency domain offset.

23. The method according to any one of claims 13 to 16, characterized in that, The side link indication signal indicates the first information in at least one of the following ways: The first information is indicated by the sequence corresponding to the side link indicator signal; The first information is indicated by the encoded bits corresponding to the side link indication signal; The first information is indicated by the sequence corresponding to the side link indicator signal and the encoded bits.

24. The method according to any one of claims 13 to 23, characterized in that, The method further includes: After the second UE sends the side link indication signal to the first UE, it sends PSCCH and / or PSSCH to the first UE at least at a first time interval; The first time is related to the switching time of the receiver of the first UE, which is the time when the receiver of the first UE switches from a low-power receiver to a main receiver.

25. An information transmission method, characterized in that, include: Configuration information of transmission resources for sending a side link indication signal to the second UE; The configuration information includes time-domain resources, frequency-domain resources, or code-domain resources configured for the sidelink indication signal, and / or the association between the sidelink indication signal and the PSCCH or PSSCH.

26. An information transmission device, characterized in that, include: The first receiving module is used to receive the side link indication signal; The information transmission module is used to perform a target operation on the PSCCH and / or PSSCH according to the side link indication signal after receiving the side link indication signal. The target operation includes one of the following operations: receiving the PSCCH or PSSCH, or not receiving the PSCCH or PSSCH.

27. An information transmission device, characterized in that, include: The first transmitting module is used to transmit a side link indication signal to the first UE; The sidelink indication signal is used to instruct the first UE to perform a target operation on the PSCCH and / or PSSCH when the sidelink indication signal is received; the target operation includes one of the following operations: receiving the PSCCH or PSSCH, or not receiving the PSCCH or PSSCH.

28. An information transmission device, characterized in that, include: The second transmitting module is used to transmit the configuration information of the transmission resources of the side link indication signal to the second UE; The configuration information includes time-domain resources, frequency-domain resources, or code-domain resources configured for the sidelink indication signal, and / or the association between the sidelink indication signal and the PSCCH or PSSCH.

29. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the information transmission method as described in any one of claims 1 to 12, or to implement the steps of the information transmission method as described in any one of claims 13 to 24.

30. A network-side device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the information transmission method as described in claim 25.

31. A wireless communication system, characterized in that, include: A terminal and a network-side device, wherein the terminal is used to perform the steps of the information transmission method as described in any one of claims 1 to 12, or to perform the steps of the information transmission method as described in any one of claims 13 to 24, and the network-side device can be used to perform the steps of the information transmission method as described in claim 25.

32. A chip, characterized in that, The chip includes a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the steps of the information transmission method as described in any one of claims 1 to 12, or the steps of the information transmission method as described in any one of claims 13 to 24, or the steps of the information transmission method as described in claim 25.

33. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the information transmission method as described in any one of claims 1 to 12, or implement the steps of the information transmission method as described in any one of claims 13 to 24, or implement the steps of the information transmission method as described in claim 25.

34. A computer program / program product, characterized in that, The computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the information transmission method as claimed in any one of claims 1 to 12, or the steps of the information transmission method as claimed in any one of claims 13 to 24, or the steps of the information transmission method as claimed in claim 25.

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