Edge link lbt and its auxiliary measurement method and device, storage medium, terminal equipment

Abstract

A sidelink LBT and an auxiliary measurement method thereof, a device, a storage medium and a terminal equipment are disclosed. The auxiliary measurement method comprises: receiving measurement indication information, wherein the measurement indication information is used to indicate to perform LBT auxiliary measurement; in response to receiving the measurement indication information, performing LBT auxiliary measurement to obtain LBT auxiliary measurement information, wherein the LBT auxiliary measurement information is used to indicate channel conditions; and sending the LBT auxiliary measurement information. The technical scheme can avoid interference caused by hidden nodes in sidelink transmission in unlicensed spectrum transmission.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to a sidelink LBT and its auxiliary measurement method, apparatus, storage medium, and terminal equipment. Background Technology

[0002] Existing sidelink transmissions operate within licensed spectrum, but future plans include extending sidelink transmissions to shared spectrum (e.g., unlicensed bands). Unlicensed bands are shared by multiple technologies (RATs), therefore, their use must adhere to certain rules. For example, terminal devices must implement a Listen Before Talk (LBT) transmission strategy to ensure fair use of the resource by all communication devices.

[0003] While the Level Bypass (LBT) mechanism can mitigate some channel interference issues, it cannot address the interference from hidden nodes (such as the sending terminal equipment) in response nodes (such as the receiving terminal equipment) since LBT is always performed by the initiating node. For example, before sending data, User Equipment (UE) 1 performs an LBT and detects that the channel is empty. Therefore, UE1 sends data to UE2, and UE2 receives the data. If UE3 has data to send, it performs an LBT. Because UE1 is far from UE3, UE3 detects that the channel is empty and begins sending data. However, since UE3 and UE2 are closer, UE2 can receive the data sent by UE3. In this case, UE3 can be considered a hidden node for UE2, and UE2's reception of data from UE1 will be interfered with by the hidden node (UE3).

[0004] Therefore, how to avoid interference from hidden nodes in unlicensed spectrum transmission of sidelinks is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] This invention provides a link LBT and its auxiliary measurement method, device, storage medium, and terminal equipment, which can avoid interference from hidden nodes in unlicensed spectrum transmission of side links.

[0006] To address the aforementioned technical problems, in a first aspect, embodiments of the present invention provide a sidelink LBT-assisted measurement method. The sidelink LBT-assisted measurement method includes: receiving measurement indication information, the measurement indication information being used to instruct the execution of LBT-assisted measurement; in response to receiving the measurement indication information, performing LBT-assisted measurement to obtain LBT-assisted measurement information, the LBT-assisted measurement information indicating channel conditions; and transmitting the LBT-assisted measurement information.

[0007] Optionally, receiving measurement indication information includes receiving a channel state information request, wherein the measurement indication information is carried in the channel state information request.

[0008] Optionally, performing LBT-assisted measurement includes: performing LBT-assisted measurement and zero-power channel state information measurement when the bit value in the channel state information request is a preset value.

[0009] Optionally, receiving measurement indication information includes receiving side link control information, wherein the measurement indication information is carried in the control information.

[0010] Optionally, the measurement indication information is represented using reserved bits of the first-stage control information in the side link control information.

[0011] Optionally, when the side link control information schedules empty data, the measurement indication information is represented by the new data indication, redundant version, or HARQ in the second-stage control information of the side link control information.

[0012] Optionally, receiving measurement indication information includes receiving a side link MAC CE, wherein the measurement indication information is carried in the side link MAC CE.

[0013] Optionally, performing LBT-assisted measurements includes: performing RSSI measurements, wherein the LBT-assisted measurement information includes RSSI; or, performing channel busy rate measurements, wherein the LBT-assisted measurement information includes channel busy rate.

[0014] Optionally, performing LBT-assisted measurements includes: performing LBT-assisted measurements on a portion of the PSSCH resources that triggered the LBT report via side link control information scheduling.

[0015] Optionally, measuring a portion of the PSSCH resources scheduled by the side link control information that triggers the LBT report includes: removing the resources occupied by data from the PSSCH resources and performing LBT auxiliary measurement on the remaining resources; or, performing LBT auxiliary measurement on the PSSCH resources when the PSSCH scheduled by the side link control information that triggers the LBT report is empty.

[0016] Optionally, performing LBT-assisted measurement includes: receiving sidelink control information, the sidelink control information indicating a preset resource location; and performing LBT-assisted measurement at the preset resource location.

[0017] Optionally, performing LBT-assisted measurement includes: receiving measurement resource indication information, the measurement resource indication information being used to indicate at least one sub-bandwidth of the LBT measurement bandwidth; and performing LBT-assisted measurement on at least one sub-bandwidth of the LBT measurement bandwidth.

[0018] Optionally, performing LBT-assisted measurements includes: calculating the channel busy rate, wherein the length of the calculation window for the channel busy rate is less than 100 time slots.

[0019] Secondly, embodiments of the present invention also provide a side-link LBT method, the side-link LBT method comprising: sending measurement indication information, the measurement indication information being used to indicate the execution of LBT auxiliary measurement; receiving LBT auxiliary measurement information, the LBT auxiliary measurement information being obtained by performing LBT auxiliary measurement; and performing LBT based on the LBT auxiliary measurement information.

[0020] Thirdly, embodiments of the present invention also provide a sidelink LBT auxiliary measurement device, which includes: a measurement indication information receiving module for receiving measurement indication information, the measurement indication information being used to indicate the execution of LBT auxiliary measurement; a measurement module for performing LBT auxiliary measurement in response to receiving the measurement indication information to obtain LBT auxiliary measurement information, the LBT auxiliary measurement information indicating channel status; and a measurement information sending module for sending out the LBT auxiliary measurement information.

[0021] Fourthly, embodiments of the present invention also provide a side-link LBT device, the side-link LBT device comprising: a measurement indication information sending module for sending measurement indication information, the measurement indication information being used to instruct the execution of LBT auxiliary measurement; a measurement information receiving module for receiving LBT auxiliary measurement information, the LBT auxiliary measurement information being obtained by executing LBT auxiliary measurement; and a monitoring module for performing LBT based on the LBT auxiliary measurement information.

[0022] Fifthly, embodiments of the present invention provide a side-link LBT auxiliary measurement method, the side-link LBT auxiliary measurement method comprising: performing RSSI measurement to obtain RSSI, wherein the LBT auxiliary measurement information includes RSSI; and sending out the LBT auxiliary measurement information.

[0023] Optionally, performing RSSI measurements includes: performing RSSI measurements on a portion of the PSSCH resources that triggered the LBT report's side link control information scheduling.

[0024] Optionally, the RSSI measurement of a portion of the PSSCH resources scheduled by the side link control information that triggers the LBT report includes: removing the resources occupied by data from the PSSCH resources and performing RSSI measurement on the remaining resources; or, performing RSSI measurement on the PSSCH resources when the PSSCH scheduled by the side link control information that triggers the LBT report is empty.

[0025] Optionally, sidelink control information is received, which indicates a preset resource location; RSSI measurement is performed at the preset resource location.

[0026] Optionally, performing RSSI measurement includes: receiving measurement resource indication information, the measurement resource indication information being used to indicate at least one sub-bandwidth of the LBT's measurement bandwidth; and performing RSSI measurement on at least one sub-bandwidth of the LBT's measurement bandwidth.

[0027] In a sixth aspect, embodiments of the present invention provide a sidelink LBT-assisted measurement method, the sidelink LBT-assisted measurement method comprising: performing a channel busy rate measurement to obtain a channel busy rate, wherein the LBT-assisted measurement information includes the channel busy rate; and sending out the LBT-assisted measurement information.

[0028] Optionally, the length of the calculation window for the channel busy rate is less than 100 time slots.

[0029] In a seventh aspect, embodiments of the present invention provide a sidelink LBT-assisted measurement method, the sidelink LBT-assisted measurement method comprising: performing a channel busy rate measurement to obtain a channel busy rate; when the channel busy rate reaches a preset threshold, performing an LBT-assisted measurement to obtain LBT-assisted measurement information, the LBT-assisted measurement information indicating channel conditions; and sending out the LBT-assisted measurement information.

[0030] Eighthly, embodiments of the present invention provide a sidelink LBT method, the sidelink LBT method comprising: receiving LBT auxiliary measurement information, wherein the LBT auxiliary measurement indicates channel conditions; and performing LBT based on the LBT auxiliary measurement information.

[0031] Ninth aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, performs the steps of the side-link LBT assisted measurement method, or performs the steps of the side-link LBT method.

[0032] In a tenth aspect, an embodiment of the present invention provides a terminal device, including a memory and a processor. The memory stores a computer program that can run on the processor. When the processor runs the computer program, it executes the steps of the side-link LBT assisted measurement method or executes the steps of the side-link LBT method.

[0033] Compared with the prior art, the technical solution of the embodiments of the present invention has the following beneficial effects:

[0034] In the technical solution of this invention, the receiving terminal device can receive the measurement indication information from the sending terminal device and perform LBT-assisted measurement; the LBT-assisted measurement information can indicate the channel occupancy status to the sending terminal device, assist the sending terminal device in performing LBT, so that the sending terminal device can discover hidden nodes in a timely manner, ensure the accuracy of the sending terminal device's channel monitoring, and thus ensure the reliability of data transmission.

[0035] Furthermore, LBT-assisted measurement can be used to calculate the channel busy rate. By setting the length of the channel busy rate calculation window to less than 100 time slots, the LBT-assisted measurement information can reflect the channel conditions over a shorter period of time, thereby better assisting the transmitting terminal equipment in performing LBT and further ensuring the reliability of data transmission. Attached Figure Description

[0036] Figure 1 This is a flowchart of an LBT-assisted measurement method for a side link according to an embodiment of the present invention;

[0037] Figure 2 This is a flowchart illustrating a side-link LBT-assisted measurement method according to an embodiment of the present invention.

[0038] Figure 3 This is a flowchart illustrating another side-link LBT-assisted measurement method according to an embodiment of the present invention.

[0039] Figure 4 This is a flowchart of another side-link LBT-assisted measurement method according to an embodiment of the present invention;

[0040] Figure 5 This is a flowchart of another side-link LBT-assisted measurement method according to an embodiment of the present invention;

[0041] Figure 6 This is a flowchart of another side-link LBT-assisted measurement method according to an embodiment of the present invention;

[0042] Figure 7 This is a flowchart of another side-link LBT-assisted measurement method according to an embodiment of the present invention;

[0043] Figure 8This is a schematic diagram of the structure of an LBT auxiliary measurement device for side links according to an embodiment of the present invention;

[0044] Figure 9 This is a schematic diagram of the structure of a side-link LBT device according to an embodiment of the present invention. Detailed Implementation

[0045] The communication systems applicable to the embodiments of this application include, but are not limited to, long-term evolution (LTE) systems, 5th-generation (5G) systems, NR systems, and future evolution systems, or multiple converged communication systems. The 5G system can be a non-standalone (NSA) 5G system or a standalone (SA) 5G system. The technical solutions of this application are also applicable to different network architectures, including but not limited to relay network architectures, dual-link architectures, and vehicle-to-everything (V2X) architectures.

[0046] This application mainly relates to sidelink communication between terminal devices. Specifically:

[0047] In this application, "terminal equipment" can refer to various forms of access terminals, user units, user stations, mobile stations, mobile stations (MS), remote stations, remote terminals, mobile devices, user terminals, wireless communication equipment, user agents, or user devices. Terminal equipment can also be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), handheld devices with wireless communication capabilities, computing devices, or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal equipment in future 5G networks, or terminal equipment in future evolved Public Land Mobile Networks (PLMNs), etc. This application does not limit the scope of these terms. Terminal equipment can also be called user equipment (UE), terminal, etc.

[0048] As described in the background section, how to avoid interference from hidden nodes in unlicensed spectrum transmission of sidelinks is a technical problem that urgently needs to be solved.

[0049] In the technical solution of this invention, the receiving terminal device can receive the measurement indication information from the sending terminal device and perform LBT-assisted measurement; the LBT-assisted measurement information can indicate the channel occupancy status to the sending terminal device, assist the sending terminal device in performing LBT, so that the sending terminal device can discover hidden nodes in a timely manner, ensure the accuracy of the sending terminal device's channel monitoring, and thus ensure the reliability of data transmission.

[0050] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0051] The sidelink LBT-assisted measurement method of this invention can be used in the receiving terminal device (Rx UE) in sidelink transmission. Specifically, the receiving terminal device or the chip in the receiving terminal device can execute the various steps of the above method.

[0052] The sidelink LBT method of this invention can be used in a transmitting terminal device (Tx UE) in sidelink transmission. Specifically, the transmitting terminal device or the chip in the transmitting terminal device can execute the various steps of the above method.

[0053] It is understood that the side-link LBT assisted measurement method or side-link LBT method of the present invention can be implemented by software program, which runs in the processor integrated inside the chip or chip module. This method can also be implemented by a combination of software and hardware, and this application does not impose any restrictions.

[0054] Figure 1 This is a flowchart of an LBT-assisted measurement method for a side link according to an embodiment of the present invention.

[0055] Specifically, the side-link LBT-assisted measurement method may include the following steps:

[0056] Step 101: Receive measurement indication information, which is used to instruct the execution of LBT assisted measurement;

[0057] Step 102: In response to receiving the measurement indication information, perform LBT auxiliary measurement to obtain LBT auxiliary measurement information, which indicates the channel condition;

[0058] Step 103: Send out the LBT auxiliary measurement information.

[0059] It should be noted that the sequence number of each step in this embodiment does not represent a limitation on the execution order of each step.

[0060] In the specific implementation of step 101, the receiving terminal device can receive measurement indication information. Accordingly, please refer to... Figure 2In step 201, the sending terminal device sends measurement indication information. The purpose of the measurement indication information is to instruct the receiving terminal device to perform LBT auxiliary measurement. That is, if the receiving terminal device does not receive the measurement indication information, then LBT auxiliary measurement does not need to be performed.

[0061] Specifically, the transmitting terminal device can send the aforementioned reception measurement indication information to the receiving terminal device before performing LBT.

[0062] In one specific embodiment, the sending terminal device generates measurement indication information and sends the measurement indication information to the receiving terminal device.

[0063] In another specific embodiment, a network device (such as a core network or base station) generates measurement indication information, sends the measurement indication information to a sending terminal device, and the sending terminal device forwards the measurement indication information to a receiving terminal device.

[0064] In the specific implementation of step 102, the measurement indication information triggers the receiving terminal device to perform LBT auxiliary measurement, and the measurement result is LBT auxiliary measurement information, which can indicate the channel status, such as indicating whether the channel is busy or idle.

[0065] In the specific implementation of step 103, the receiving terminal device sends LBT auxiliary measurement information. Correspondingly, in step 202, the sending terminal device receives the LBT auxiliary measurement information from the receiving terminal device. And in step 203, LBT is performed based on the LBT auxiliary measurement information. Specifically, when performing LBT, the sending terminal device can refer to the channel conditions indicated by the LBT auxiliary measurement information. Since the receiving terminal device can discover hidden nodes by performing LBT auxiliary measurements, by notifying the sending terminal device of the LBT auxiliary measurement results, the sending terminal device can obtain information about hidden nodes during LBT, thereby avoiding interference caused by hidden nodes.

[0066] In a non-limiting embodiment of the present invention, please refer to Figure 3 In step 301, the transmitting terminal device may send a Channel State Information (CSI) request. Measurement indication information is carried in the channel state information request.

[0067] In this embodiment, no modification is required to the channel state information request; that is, the channel state information request sent by the transmitting terminal device is the same as that in the prior art.

[0068] In this embodiment, the terminal device receives a reference signal (RS) for zero-power (ZP) channel state information configured by higher-layer parameters. When the bit value in the channel state information request is a preset value (e.g., 1), in step 302, the terminal device simultaneously performs LBT-assisted measurement and zero-power channel state information measurement.

[0069] In this embodiment of the invention, the receiving terminal device does not need to send additional information to instruct the sending terminal device to perform LBT assisted measurement. Instead, it reuses the channel state information request when configuring ZP CSI-RS and triggers the execution of LBT assisted measurement through the channel state information request, thereby reducing signaling overhead.

[0070] Furthermore, the receiving terminal device can perform Received Signal Strength Indication (RSSI) measurement or Channel Busy Ratio (CBR) measurement, and in step 303, send the RSSI or Channel Busy Ratio to the transmitting terminal device.

[0071] In a non-limiting embodiment of the present invention, step 301 can also be replaced by: the transmitting terminal device can transmit sidelink control information (SCI). Measurement indication information is carried in the control information.

[0072] In one specific implementation, the measurement indication information is represented using reserved bits of the first-stage control information in the side link control information.

[0073] Specifically, the first-stage control information (1 st The SCI contains a reserved bit that can be used to carry measurement indication information. For example, a reserved bit value of 1 indicates an indication to perform LBT-assisted measurement; a reserved bit value of 0 indicates that no indication to perform LBT-assisted measurement is required.

[0074] In another specific implementation, when the side link control information schedules empty data, the measurement indication information is represented by the new data indication field, redundant version indication field, or HARQ indication field in the second-stage control information of the side link control information.

[0075] Specifically, when the sidelink control information schedules an empty transmission, it means that no data needs to be transmitted. For example, the sidelink control information may indicate a function or an action. In this case, since no data needs to be transmitted, certain unused fields in the 2nd SCI can be used to indicate measurement indication information, such as the New Data Indication (NDI) field, the Redundancy Version (RV) indication field, or the Hybrid Automatic Repeat Request (HARQ) indication field.

[0076] In a non-limiting embodiment of the present invention, step 301 can also be replaced by: the transmitting terminal device can send a sidelink Media Access Control (MAC) control element (CE). The sidelink MAC CE carries measurement indication information. This sidelink MAC CE is a new type of MAC CE.

[0077] In a non-limiting embodiment of the present invention, the receiving terminal device performing LBT auxiliary measurement may refer to performing LBT auxiliary measurement on a portion of the PSSCH resources scheduled by the side link control information that triggers the LBT report.

[0078] In a non-limiting embodiment of the present invention, please refer to Figure 4 , Figure 4 Another LBT-assisted measurement method is shown. LBT-assisted measurement may include the following steps:

[0079] Step 401: Receive the side link control information that triggers the LBT report;

[0080] Step 402: Perform LBT-assisted measurement on a portion of the PSSCH resources scheduled by the side link control information to obtain LBT-assisted measurement information, which indicates the channel condition;

[0081] Step 403: Send out the LBT auxiliary measurement information.

[0082] In one embodiment of step 402, the resources occupied by data are removed from the PSSCH resources, and LBT auxiliary measurement is performed on the remaining resources. Specifically, the resources occupied by data can also be notified to the receiving terminal device through the side link control information. That is, the receiving terminal device performs LBT auxiliary measurement (e.g., measuring RSSI) on the portion of the PSSCH resources that does not transmit data.

[0083] In another implementation of step 402, when the PSSCH scheduled by the side link control information that triggers the LBT report is empty, LBT auxiliary measurement is performed on the PSSCH resources. Specifically, an empty PSSCH means that no data is transmitted on any of the PSSCH resources. In this case, the receiving terminal device can perform LBT auxiliary measurement (e.g., measure RSSI) on all PSSCH resources.

[0084] This embodiment of the invention performs LBT-assisted measurement on resources scheduled by the side link control information.

[0085] In a non-limiting embodiment of the present invention, please refer to Figure 5 , Figure 5 Another LBT-assisted measurement method is shown. LBT-assisted measurement may include the following steps:

[0086] Step 501: Receive side link control information, wherein the side link control information indicates a preset resource location;

[0087] Step 502: Perform LBT-assisted measurement at the preset resource location to obtain LBT-assisted measurement information, which indicates the channel condition;

[0088] Step 503: Send out the LBT auxiliary measurement information.

[0089] Unlike the previous embodiments, the embodiments of the present invention can indicate a preset resource location in the side link control information. The preset resource location is not limited to the resources scheduled by the side link control information. Therefore, the receiving terminal device can perform LBT-assisted measurement not only on the resources scheduled by the side link control information, thereby ensuring the flexibility of the measurement.

[0090] Specifically, the preset resource location is no earlier than the resource location occupied by the side link control information.

[0091] The resources referred to in the embodiments of the present invention include time-domain resources and frequency-domain resources, and the resource locations include time-domain locations and frequency-domain locations.

[0092] In a non-limiting embodiment of the present invention, please refer to Figure 6 , Figure 6 Another LBT-assisted measurement method is shown. LBT-assisted measurement may include the following steps:

[0093] Step 601: Receive measurement resource indication information, the measurement resource indication information being used to indicate at least one sub-bandwidth of the LBT's measurement bandwidth;

[0094] Step 602: Perform LBT auxiliary measurement on at least one sub-bandwidth of the LBT measurement bandwidth to obtain LBT auxiliary measurement information, wherein the LBT auxiliary measurement information indicates the channel condition;

[0095] Step 603: Send out the LBT auxiliary measurement information.

[0096] In this embodiment of the invention, the transmitting terminal device can send measurement resource indication information to the receiving terminal device. Specifically, the measurement resource indication information can be in the form of a bitmap, where each bit in the bitmap corresponds to a sub-bandwidth. The measurement resource indication information can indicate at least one sub-bandwidth of the LBT measurement bandwidth. The receiving terminal device can measure the channel of the sub-bandwidth indicated by the measurement resource indication information. LBT auxiliary measurement information can reflect the channel status of the sub-bandwidth. The sub-bandwidth is the minimum bandwidth or a predefined bandwidth for the terminal device to perform LBT.

[0097] For example, the LBT measurement bandwidth is 80MHz, which includes four 20MHz sub-bandwidths, each corresponding to a channel. If TxUE sends 1011 to RxUE, then RxUE can perform LBT auxiliary measurement information on the first, third, and fourth sub-bandwidths of the measurement bandwidth.

[0098] In a non-limiting embodiment of the present invention, please refer to Figure 7 , Figure 7 Another LBT-assisted measurement method is shown. LBT-assisted measurement may include the following steps:

[0099] Step 701: Calculate the channel busy rate, wherein the length of the calculation window for the channel busy rate is less than 100 time slots;

[0100] Step 702: Send out the channel busy rate.

[0101] In this embodiment of the invention, performing LBT-assisted measurement can be a process of calculating the channel busy rate. In the prior art, the channel busy rate is calculated over 100 time slots; an excessively long calculation window will cause the LBT mechanism to malfunction. Therefore, in this embodiment of the invention, the length of the channel busy rate calculation window can be reduced.

[0102] Specifically, the length of the channel busy rate calculation window can be configured by the higher-level parameter sl-TimerWindowSizeCBR.

[0103] Furthermore, the length of the calculation window for the channel busy rate is one time slot.

[0104] This invention addresses a scheme for LBT-assisted measurement in edge link communication scenarios. Edge link communication differs from existing non-edge link communication LBT-assisted measurement schemes in the source of measurement indication information, the indication domain occupied by the measurement indication information, and the feedback information parameters (such as the specific parameters of the LBT-assisted measurement information), and therefore cannot be directly applied. Specifically, firstly, in edge link scenarios, the indication information instructing the receiving terminal device to perform assisted LBT measurement can originate from the base station, and then be transmitted to the receiving terminal device via the transmitting terminal device; this base station-transmitting terminal device-receiving terminal device trigger indication LBT-assisted measurement format is not present in non-edge link scenarios. Secondly, edge link scenarios will have some differences in indication details, such as the indication domain of the control information used being different from existing technologies. Thirdly, the feedback information in edge link scenarios may contain parameters unique to edge link communication, such as CBR.

[0105] Please refer to Figure 8 The side-link LBT auxiliary measurement device 80 may include:

[0106] The measurement indication information receiving module 801 is used to receive measurement indication information, which is used to instruct the execution of LBT auxiliary measurement;

[0107] The measurement module 802 is configured to perform LBT-assisted measurement in response to receiving the measurement indication information, so as to obtain LBT-assisted measurement information, wherein the LBT-assisted measurement information indicates the channel condition;

[0108] The measurement information transmission module 803 is used to transmit the LBT auxiliary measurement information.

[0109] In specific implementations, the aforementioned sidelink LBT auxiliary measurement device may correspond to a chip in the receiving terminal device that has sidelink LBT auxiliary measurement function, such as a SOC (System-On-a-Chip), baseband chip, etc.; or correspond to a chip module in the receiving terminal device that includes a sidelink LBT auxiliary measurement function; or correspond to a chip module with a data processing function chip; or correspond to the receiving terminal device.

[0110] Please refer to Figure 9 The side link LBT device 90 may include:

[0111] The measurement indication information sending module 901 is used to send measurement indication information, which is used to instruct the execution of LBT auxiliary measurement;

[0112] Measurement information receiving module 902 is used to receive LBT auxiliary measurement information, which is obtained by performing LBT auxiliary measurement;

[0113] The monitoring module 903 is used to perform LBT based on the LBT auxiliary measurement information.

[0114] In specific implementations, the aforementioned sidelink LBT device may correspond to a chip in the transmitting terminal equipment that has sidelink LBT functionality, such as a SOC (System-On-a-Chip), a baseband chip, etc.; or to a chip module in the transmitting terminal equipment that includes a sidelink LBT function; or to a chip module with a data processing chip; or to the transmitting terminal equipment itself.

[0115] For more information on the working principle and operation mode of the side-link LBT auxiliary measurement device 80 or the side-link LBT device 90, please refer to [link to relevant documentation]. Figures 1 to 7 The relevant descriptions in the text will not be repeated here.

[0116] Regarding the modules / units included in the various devices and products described in the above embodiments, they can be software modules / units, hardware modules / units, or a combination of both. For example, for various devices and products applied to or integrated into a chip, all of their modules / units can be implemented using hardware methods such as circuits, or at least some modules / units can be implemented using software programs that run on a processor integrated within the chip, while the remaining (if any) modules / units can be implemented using hardware methods such as circuits; for various devices and products applied to or integrated into a chip module, all of their modules / units can be implemented using hardware methods such as circuits, and different modules / units can be located in the same component (e.g., chip, circuit module, etc.) or different components of the chip module, or at least some modules / units can be implemented using hardware methods such as circuits. The components can be implemented using software programs that run on the processor integrated within the chip module. The remaining (if any) modules / units can be implemented using hardware methods such as circuits. For various devices and products applied to or integrated into the terminal, each of its components / units can be implemented using hardware methods such as circuits. Different modules / units can be located in the same component (e.g., chip, circuit module, etc.) or in different components within the terminal. Alternatively, at least some modules / units can be implemented using software programs that run on the processor integrated within the terminal, while the remaining (if any) modules / units can be implemented using hardware methods such as circuits.

[0117] This invention also discloses a storage medium, which is a computer-readable storage medium storing a computer program thereon. When the computer program is executed, it can perform the steps of the aforementioned method. The storage medium may include ROM, RAM, a magnetic disk, or an optical disk, etc. The storage medium may also include non-volatile memory or non-transitory memory, etc.

[0118] This invention also discloses a terminal device, which may include a memory and a processor. The memory stores a computer program that can run on the processor. When the processor runs the computer program, it can execute the steps of the aforementioned method. The user device includes, but is not limited to, terminal devices such as mobile phones, computers, and tablet computers.

[0119] The network device in this application embodiment can also be called an access network device, for example, it can be a base station (BS) (also called a base station device). A network device is a device deployed in a radio access network (RAN) to provide wireless communication functions. For example, in second-generation (2G) networks, equipment providing base station functionality includes base transceiver stations (BTS); in third-generation (3G) networks, it includes NodeBs; in fourth-generation (4G) networks, it includes evolved NodeBs (eNBs); in wireless local area networks (WLANs), it is an access point (AP); in NR (Radio Frequency Identification), it includes next-generation nodebase stations (gNBs) and further evolved NodeBs (ng-eNBs). The gNB communicates with the terminal device using NR technology, while the ng-eNB communicates with the terminal device using Evolved Universal Terrestrial Radio Access (E-UTRA) technology. Both gNBs and ng-eNBs can connect to the 5G core network. The network equipment in this application embodiment also includes equipment providing base station functionality in future new communication systems.

[0120] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article indicates that the preceding and following related objects have an "or" relationship.

[0121] In the embodiments of this application, "multiple" refers to two or more.

[0122] The descriptions of "first," "second," etc., appearing in the embodiments of this application are for illustrative purposes and to distinguish the objects being described. They have no order and do not indicate any special limitation on the number of devices in the embodiments of this application, nor do they constitute any limitation on the embodiments of this application.

[0123] In this application, the term "connection" refers to various connection methods, such as direct connection or indirect connection, to achieve communication between devices. This application does not impose any limitations on this.

[0124] It should be understood that in the embodiments of this application, the processor can be a central processing unit (CPU), or it can be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0125] It should also be understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can 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. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced synchronous DRAM (ESDRAM), synchronous linked DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0126] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media.

[0127] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0128] In the several embodiments provided in this application, it should be understood that the disclosed methods, apparatuses, and systems can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for example, the division of units is merely a logical functional division, and other division methods may exist in actual implementation; for example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0129] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0130] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can be physically comprised separately, or two or more units can be integrated into one unit. The integrated unit described above can be implemented in hardware or in the form of hardware plus software functional units.

[0131] The integrated unit implemented as a software functional unit described above can be stored in a computer-readable storage medium. This software functional unit, stored in a storage medium, includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute some steps of the methods described in the various embodiments of the present invention.

[0132] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A side-link LBT-assisted measurement method, characterized in that, Applied to receiving terminal equipment, including: The method includes receiving measurement indication information sent by a transmitting terminal device, wherein the measurement indication information is used to instruct the execution of LBT-assisted measurement; receiving the measurement indication information includes receiving a channel state information request, wherein the measurement indication information is carried in the channel state information request. In response to receiving the measurement indication information, LBT auxiliary measurement is performed to obtain LBT auxiliary measurement information, which is used to indicate the channel status to the transmitting terminal device; the execution of LBT auxiliary measurement includes: when the bit value in the channel status information request is a preset value, performing LBT auxiliary measurement and zero-power channel status information measurement; The LBT auxiliary measurement information is sent out.

2. The LBT-assisted measurement method for side links according to claim 1, characterized in that, The received measurement indication information includes: Receive side link control information, and the measurement indication information is carried in the control information.

3. The LBT-assisted measurement method for side links according to claim 2, characterized in that, The measurement indication information is represented using reserved bits from the first-stage control information in the side link control information.

4. The LBT-assisted measurement method for side links according to claim 2, characterized in that, When the side link control information schedules empty data, the measurement indication information is represented by the new data indication, redundant version, or HARQ in the second stage control information of the side link control information.

5. The LBT-assisted measurement method for side links according to claim 1, characterized in that, The received measurement indication information includes: The measurement indication information is carried in the side link MAC CE.

6. The LBT-assisted measurement method for side links according to claim 1, characterized in that, The execution of LBT-assisted measurements includes: Perform RSSI measurements, where the LBT auxiliary measurement information includes RSSI; Alternatively, a channel busy rate measurement can be performed, wherein the LBT auxiliary measurement information includes the channel busy rate.

7. The LBT-assisted measurement method for side links according to claim 1, characterized in that, The execution of LBT-assisted measurements includes: LBT-assisted measurements are performed on a portion of the PSSCH resources that trigger LBT reports and are scheduled by the side link control information.

8. The LBT-assisted measurement method for side links according to claim 7, characterized in that, The measurement of a portion of the PSSCH resources that trigger LBT reports for side link control information scheduling includes: Remove the resources occupied by data from the PSSCH resources, and perform LBT auxiliary measurement on the remaining resources; Alternatively, when the PSSCH for the side link control information scheduling that triggers the LBT report is empty, perform LBT auxiliary measurements on the PSSCH resources.

9. The LBT-assisted measurement method for side links according to claim 1, characterized in that, The execution of LBT-assisted measurements includes: Receive side link control information, wherein the side link control information indicates a preset resource location; LBT auxiliary measurement is performed at the preset resource location.

10. The LBT-assisted measurement method for side links according to claim 1, characterized in that, The execution of LBT-assisted measurements includes: Receive measurement resource indication information, the measurement resource indication information being used to indicate at least one sub-bandwidth of the measurement bandwidth of the LBT; LBT-assisted measurement is performed on at least one sub-bandwidth of the LBT measurement bandwidth.

11. The LBT-assisted measurement method for side links according to claim 1, characterized in that, The execution of LBT-assisted measurements includes: Calculate the channel busy rate, wherein the length of the calculation window for the channel busy rate is less than 100 time slots.

12. A side-link LBT method, characterized in that, Applied to transmitting terminal equipment, including: Sending measurement indication information to a receiving terminal device, the measurement indication information being used to instruct the receiving terminal device to perform LBT-assisted measurement; sending the measurement indication information includes: sending a channel state information request, the measurement indication information being carried in the channel state information request; when the bit value in the channel state information request is a preset value, the receiving terminal device performs LBT-assisted measurement and zero-power channel state information measurement; Receive LBT auxiliary measurement information, wherein the LBT auxiliary measurement information is obtained by the receiving terminal device through performing LBT auxiliary measurement; LBT is performed based on the LBT auxiliary measurement information.

13. An auxiliary measurement device for edge link LBT, characterized in that, Applied to receiving terminal equipment, including: A measurement indication information receiving module is used to receive measurement indication information sent by a transmitting terminal device. The measurement indication information is used to instruct the execution of LBT-assisted measurement. Receiving the measurement indication information includes receiving a channel state information request, in which the measurement indication information is carried. The measurement module is configured to perform LBT-assisted measurement in response to receiving the measurement indication information to obtain LBT-assisted measurement information, wherein the LBT-assisted measurement information is used to indicate channel status to the transmitting terminal device; the execution of LBT-assisted measurement includes: performing LBT-assisted measurement and zero-power channel status information measurement when the bit value in the channel status information request is a preset value; The measurement information transmission module is used to transmit the LBT auxiliary measurement information.

14. A side-link LBT device, characterized in that, Applied to transmitting terminal equipment, including: A measurement indication information sending module is used to send measurement indication information to a receiving terminal device. The measurement indication information is used to instruct the receiving terminal device to perform LBT-assisted measurement. Sending the measurement indication information includes sending a channel state information request, in which the measurement indication information is carried. When the bit value in the channel state information request is a preset value, the receiving terminal device performs LBT-assisted measurement and zero-power channel state information measurement. A measurement information receiving module is used to receive LBT auxiliary measurement information, which is obtained by the receiving terminal device through performing LBT auxiliary measurement. The monitoring module is used to perform LBT based on the LBT auxiliary measurement information.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is run by the processor, it performs the steps of the side-link LBT auxiliary measurement method according to any one of claims 1 to 11, or performs the steps of the side-link LBT method according to claim 12.

16. A terminal device comprising a memory and a processor, wherein the memory stores a computer program executable on the processor, characterized in that, When the processor runs the computer program, it performs the steps of the side-link LBT auxiliary measurement method according to any one of claims 1 to 11, or performs the steps of the side-link LBT method according to claim 12.

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