WO2024032193A1

WO2024032193A1 - Unlicensed spectrum resource determination method and apparatus

Info

Publication number: WO2024032193A1
Application number: PCT/CN2023/103373
Authority: WO
Inventors: 易凤; 苏宏家; 卢磊
Original assignee: 华为技术有限公司
Priority date: 2022-08-11
Filing date: 2023-06-28
Publication date: 2024-02-15
Also published as: CN117676838A

Abstract

The present application relates to the technical field of communications, and provides an unlicensed spectrum resource determination method and apparatus, for use in solving the problem that the communication efficiency is low because a receiving end cannot obtain resource occupancy information of transmission data due to the fact that two communication parties do not know resource block information of an unlicensed spectrum of the opposite party. The method comprises: a first terminal accessing a channel, and determining a first interlaced resource block set, the first interlaced resource block set comprising M resource blocks; and determining N resource blocks from the M resource blocks for sending first sidelink information to a second terminal on the N resource blocks, wherein N and M are positive integers, and the value of N is less than the value of M.

Description

A method and device for determining resources of unlicensed spectrum

This application claims priority to the Chinese patent application submitted to the State Intellectual Property Office on August 11, 2022, with the application number 202210961934.6 and the application title "A method and device for determining resources in unlicensed spectrum", the entire content of which is incorporated by reference. incorporated in this application.

Technical field

The present application relates to the field of communication technology, and in particular, to a method and device for determining unlicensed spectrum resources.

Background technique

In wireless communication systems, the communication between user equipment (User Equipment, UE) is called sidelink (SL). In NR, according to the different frequency bands used, it can be divided into licensed frequency bands and unlicensed frequency bands. Among them, the UE can use the spectrum resources in the licensed frequency band based on the scheduling of network equipment, while for the unlicensed frequency band, the UE can use it through competition. spectrum resources. For example, the UE can obtain a channel occupancy time (Constant on-time, COT) of some spectrum resources in the unlicensed frequency band through the listen before talk (LBT) mechanism, such as determining the available spectrum resource block (Resource Block). , RB) set.

In some areas, the use of unlicensed frequency bands needs to meet certain regulatory requirements, such as Occupied Channel Bandwidth (OCB) requirements. Taking the 5GHz frequency band as an example, access to a 20MHz channel needs to meet at least the minimum OCB The channel can be occupied only if required. For example, the minimum OCB is 80% of the 20MHz bandwidth, that is, at least 16MHz of bandwidth must be occupied before the 20MHz channel can be occupied. Based on this, a concept of interlaced resource block (interlaced RB) is proposed. For example, a 20MHz bandwidth resource is divided into multiple interleaved RBs, and each RB set is composed of multiple scattered interleaved RBs.

However, the RB sets configured by different network devices may be different. For example, the number or distribution of interleaved RBs in the RB set may be different. When both communicating parties do not know the other party's RB set information, such as when there is no network coverage or no network intervention. In the scenario, if the sender sends data according to its own interleaved RBs, and the receiver does not know the number or distribution of the sender's interleaved RBs, it requires multiple blind checks to correctly obtain the resource occupation information of the sender, and the communication efficiency is low. .

Contents of the invention

This application provides a method and device for determining resources of an unlicensed spectrum, which solves the problem in the prior art that the receiving end cannot obtain the resource occupancy information of the transmitted data due to the fact that both communicating parties do not know the resource block information of the other party's unlicensed spectrum. Communication The problem of lower efficiency.

In order to achieve the above purpose, this application adopts the following technical solutions:

In a first aspect, a method for determining resources of unlicensed spectrum is provided. The method includes: a first terminal accesses a channel, determines a first set of interleaved resource blocks, and the first set of interleaved resource blocks includes M resource blocks; determines N resource blocks, the N resource blocks belong to the M resource blocks, where N and M are positive integers, and the value of N is smaller than the value of M; on the N resource blocks, the second The terminal sends the first sideline information.

With the above technical solution, the sending end and the receiving end can use a fixed number and fixed position of N RBs to send and receive information, so that when the receiving end and the sending end respectively configure different RB sets, they can accurately receive sideline information and improve non-linear transmission. Sidelink transmission communication efficiency of licensed spectrum.

In one implementation, the N resource blocks are the N resource blocks with the smallest or largest index among the M resource blocks, or include N resource blocks located in the middle of the M resource blocks. That is to say, the receiving end and the transmitting end can configure the same unlicensed spectrum resource selection method. For example, both are configured to transmit the first sideline information in the N RBs with the smallest RB index in their respective staggered resource block sets, so that the receiving end does not need to Multiple blind checks can successfully receive information and improve communication efficiency.

In one implementation, N is preconfigured by the first terminal, or configured by a network device, or predefined.

In one implementation, N may be configured as 10.

In one implementation, the first sideline information includes sideline control information and/or sideline data information.

In one implementation, the first sidelink information includes first sidelink synchronization information. Among them, the receiving end and the transmitting end can continuously transmit sideline information through N RBs in the interleaved resource block set. Alternatively, the sender and receiver can only use fixed N RBs to send and receive information during the first transmission, and then perform signaling interaction through sidelink synchronization information to transfer their respective RBs. Notify the other party of aggregation information or protection bandwidth information, and negotiate the time-frequency resource location for subsequent transmission of information, thereby improving the utilization of spectrum resources and further improving communication efficiency.

In one implementation, the method further includes: the first terminal receiving first indication information from the second terminal; the first indication information is used to indicate a first protection bandwidth, and the first protection bandwidth used to determine L resource blocks, and/or, the first indication information indicates L resource blocks, where L is a positive integer. Among them, the first indication information can be used by the second terminal to inform the first terminal of its own resource block set information, so that the first terminal can determine the resources for subsequent transmission of sideline data according to the number of RBs in the RB set of the receiving end, thereby improving resource utilization. .

In an implementation manner, the first terminal receives the first indication information on N resource blocks.

In one implementation, the first indication information is carried in the physical sidelink broadcast channel PSBCH, or in radio resource control RRC signaling, or in the media access control MAC control element CE, or, Carried in the sidelink control information SCI.

In one implementation, the method further includes: the first terminal sending second indication information to the second terminal on the N resource blocks, the second indication information being used to indicate a second protection bandwidth , the second protection bandwidth is used to determine M resource blocks, and/or the second indication information is used to indicate the M resource blocks. Among them, the second indication information can be used by the first terminal to inform the second terminal of its own resource block set information, so that the second terminal can determine the resources for subsequent reception of sideline data according to the number of RBs in the RB set of the transmitting end, thereby improving resource utilization. .

In an implementation manner, the second indication information is carried in the first sidelink synchronization information, or is carried in the physical sidelink broadcast channel PSBCH, or is carried in radio resource control RRC signaling, or, It is carried in the media access control MAC control element CE, or it is carried in the sidelink control information SCI.

In one implementation, the first indication information or the second indication information is carried in X bits, where the value of X is a positive integer, and the related to at least one of the number and the subcarrier spacing. The information indicated by the first indication information or the second indication information is different, and the number of bits carried is also different, and the indication method is more flexible.

In one implementation, the method further includes: Method 1: the first terminal determines to send the second sideline information to the second terminal on Y resource blocks according to the first indication information, wherein, The value of Y is the smaller of the M value and the L value, or the Y resource blocks are the intersection of the M resource blocks and the L resource blocks. The second side row information includes side row data. Among them, the receiving end and the transmitting end can determine to use the RB set with a smaller number of interlace RBs among the RB sets of the transmitting end and the receiving end as the transmission resource according to the configuration method, so that the receiving end can successfully receive sideline data and reduce the time spent on the receiving end. The number of blind checks improves resource utilization and communication efficiency.

In one implementation, the method further includes: Method 2: the first terminal sends second sideline information to the second terminal on the M resource blocks, where the second sideline information includes sideline data. . Among them, the receiving end and the sending end can be configured according to the configuration method. The sending end sends according to its own configured RB set, and the receiving end receives according to the sending end's RB set configuration, thereby ensuring that the receiving end can successfully receive sideline data and reducing blind detection on the receiving end. times to improve resource utilization and communication efficiency.

In one implementation, the method further includes: receiving third indication information from a network device; or, sending third indication information to the second terminal, where the third indication information is used to instruct sending the second The resource configuration mode corresponding to the sidelink information is mode 1 or mode 2.

In a second aspect, a method for determining resources of unlicensed spectrum is provided. The method includes: a second terminal determines a second set of interleaved resource blocks, and the second set of interleaved resource blocks includes L resource blocks; determines N resource blocks, The N resource blocks belong to the L resource blocks, where N and L are positive integers, and the value of N is less than the value of L; receiving the first message from the first terminal on the N resource blocks One side row of information.

In one implementation, the N resource blocks are the N resource blocks with the smallest or largest index among the L resource blocks, or include N resource blocks located in the middle of the L resource blocks.

In one implementation, N is preconfigured by the second terminal, or configured by a network device, or predefined.

In one implementation, N may be configured as 10.

In one implementation, the first sidelink information includes first sidelink synchronization information.

In one implementation, the method further includes: the second terminal sending first indication information to the first terminal, the first indication information being used to indicate a first protection bandwidth, and the first protection bandwidth being used to determine L resource blocks, and/or the first indication information indicates L resource blocks, where L is a positive integer.

In an implementation manner, the second terminal sends the first indication information on N resource blocks.

In one implementation, the method further includes: the second terminal receiving second indication information from the first terminal on the N resource blocks, the second indication information being used to indicate the second protection bandwidth, The second protection bandwidth is used to determine M resource blocks, and/or the second indication information is used to indicate the M resource blocks.

In one implementation, the first indication information or the second indication information is carried in X bits, where the value of X is a positive integer, and the related to at least one of the subcarrier spacings.

In one implementation, the method further includes: Method 1: the second terminal determines to receive the second sideline information from the first terminal on Y resource blocks according to the second indication information, wherein , the value of Y is the smaller of the M value and the L value, or the Y resource blocks are the intersection of the M resource blocks and the L resource blocks, The second side row information includes side row data.

In one implementation, the method further includes: Method 2: the second terminal determines to receive the second sideline information from the first terminal on the M resource blocks according to the second indication information. , the second side row information includes side row data.

In one implementation, the method further includes: receiving third indication information from a network device; or, receiving third indication information from the first terminal, the third indication information being used to indicate receiving the third indication information. The resource configuration mode corresponding to the second-side row information is mode 1 or mode 2.

In a third aspect, a communication device is provided. The communication device includes: a processing module, configured to access a channel and determine a first interleaved resource block set, where the first interleaved resource block set includes M resource blocks; determine N resources block, the N resource blocks belong to the M resource blocks, where N and M are positive integers, and the value of N is smaller than the value of M. A transceiver module, configured to send the first sideline information to the second terminal on the N resource blocks.

In one implementation, the N resource blocks are the N resource blocks with the smallest or largest index among the M resource blocks, or include N resource blocks located in the middle of the M resource blocks.

In one implementation, N is preconfigured by the communication device, or configured by a network device, or predefined.

In one implementation, N may be configured as 10.

In one implementation, the transceiver module is further configured to receive first indication information from the second terminal; the first indication information is used to indicate a first protection bandwidth, and the first protection bandwidth is used to determine L resource blocks, and/or the first indication information indicates L resource blocks, where L is a positive integer.

In one implementation, the transceiver module is specifically configured to receive the first indication information on N resource blocks.

In an implementation manner, the first indication information is carried in the physical sidelink broadcast channel PSBCH, or in radio resource control RRC signaling, or in the media access control MAC control element. CE, or carried in sidelink control information SCI.

In one implementation, the transceiver module is further configured to send second indication information to the second terminal on the N resource blocks, where the second indication information is used to indicate a second protection bandwidth, and the third The second protection bandwidth is used to determine the M resource blocks, and/or the second indication information is used to indicate the M resource blocks.

In one implementation, the transceiver module is further configured to perform Mode 1: send second sideline information to the second terminal on Y resource blocks according to the first indication information, where Y is The value is the smaller of the M value and the L value, or the Y resource blocks are the intersection of the M resource blocks and the L resource blocks, and the second sideline information includes Side row data.

In an implementation manner, the transceiver module is further configured to perform manner 2: sending second sideline information to the second terminal on the M resource blocks, where the second sideline information includes sideline data.

In one implementation, the transceiver module is further configured to receive third instruction information from the network device; or, send third instruction information to the second terminal, where the third instruction information is used to instruct sending the third instruction information. The resource configuration mode corresponding to the second-side row information is mode 1 or mode 2.

In a fourth aspect, a communication device is provided. The communication device includes: a processing module for determining a second interleaved resource block set, where the second interleaved resource block set includes L resource blocks; and determining N resource blocks, the N resource blocks belong to the L resource blocks, where N and L are positive integers, and the value of N is smaller than the value of L. A transceiver module, configured to receive first sideline information from the first terminal on the N resource blocks.

In one implementation, N may be configured as 10.

In one implementation, the transceiver module is further configured to send first indication information to the first terminal, where the first indication information is used to indicate a first protection bandwidth, and the first protection bandwidth is used to determine L resource blocks, and/or the first indication information indicates L resource blocks, where L is a positive integer.

In one implementation, the transceiver module is specifically configured to send the first indication information on N resource blocks.

In one implementation, the transceiver module is further configured to receive second indication information from the first terminal on the N resource blocks, where the second indication information is used to indicate a second protection bandwidth, and the The second guard bandwidth is used to determine M resource blocks, and/or the second indication information is used to indicate the M resource blocks.

In one implementation, the transceiver module is also configured to perform Mode 1: the second terminal receives second sideline information from the first terminal on Y resource blocks according to the second indication information, wherein , the value of Y is the smaller of the M value and the L value, or the Y resource blocks are the intersection of the M resource blocks and the L resource blocks, The second side row information includes side row data.

In one implementation, the transceiver module is also used in Mode 2: the second terminal receives the second sideline information from the first terminal on the M resource blocks according to the second indication information, The second side row information includes side row data.

In one implementation, the transceiver module is further configured to receive third indication information from the network device; or, receive third indication information from the first terminal, where the third indication information is used to indicate receiving the The resource configuration mode corresponding to the second sideline information is mode 1 or mode 2.

In a fifth aspect, a terminal device is provided, including: one or more processors and one or more memories; the one or more memories are coupled to the one or more processors, and the one or more memories Used to store computer program code, so The computer program code includes computer instructions that, when executed by the one or more processors, cause the terminal device to perform the method described in any one of the above first aspects.

A sixth aspect provides a terminal device, including: one or more processors and one or more memories; the one or more memories are coupled to the one or more processors, and the one or more memories Used to store computer program code, the computer program code including computer instructions, when the one or more processors execute the computer instructions, causing the terminal device to perform the method described in any one of the above second aspects. method.

In a seventh aspect, a computer-readable storage medium is provided. Computer-executable instructions are stored in the computer-readable storage medium. When called by the computer, the computer-executable instructions are used to cause the computer to execute the above-mentioned first step. The method of any one of the aspects.

In an eighth aspect, a computer-readable storage medium is provided. Computer-executable instructions are stored in the computer-readable storage medium. When called by the computer, the computer-executable instructions are used to cause the computer to execute the above-mentioned first step. The method described in any one of the two aspects.

A ninth aspect provides a computer program product containing instructions, which when the computer program product is run on a computer, causes the computer to perform the method described in any one of the above first aspects.

A tenth aspect provides a computer program product containing instructions, which when the computer program product is run on a computer, causes the computer to perform the method described in any one of the above second aspects.

An eleventh aspect provides a chip, which is coupled to a memory and used to read and execute program instructions stored in the memory to implement the method as described in any one of the above first aspects.

A twelfth aspect provides a chip, which is coupled to a memory and used to read and execute program instructions stored in the memory to implement the method described in any one of the above second aspects.

A thirteenth aspect provides a communication system, which includes the communication device according to any one of the above third aspects and the communication device according to any one of the above fourth aspects.

It can be understood that any communication device, terminal equipment, computer-readable storage medium, computer program product, chip or communication system provided above can be used to execute the corresponding method provided above. Therefore, it can For the beneficial effects achieved, please refer to the beneficial effects in the corresponding methods provided above, and will not be described again here.

Description of drawings

Figure 1 is an architecture diagram of a communication system provided by an embodiment of the present application;

Figure 2 is an architecture diagram of another communication system provided by an embodiment of the present application;

Figures 3a, 3b, 4a, 4b, and 4c are schematic diagrams of several resource pool configurations provided by embodiments of the present application;

Figure 5 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 6 is a schematic flowchart of a method for determining unlicensed spectrum resources provided by an embodiment of the present application;

Figure 7 is a schematic diagram of another resource pool configuration provided by an embodiment of the present application;

Figure 8 is a schematic flowchart of a resource determination method provided by an embodiment of the present application;

Figure 9 is a schematic flowchart of another method for determining resources of unlicensed spectrum provided by an embodiment of the present application;

Figures 10 and 11 are flowcharts 1 and 2 of the resource determination method provided by the embodiment of the present application;

Figure 12 is a schematic structural diagram of another communication device provided by an embodiment of the present application.

Detailed ways

Hereinafter, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this embodiment, unless otherwise specified, "plurality" means two or more.

It should be noted that in this application, words such as “exemplary” or “for example” are used to represent examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "such as" is not intended to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the words "exemplary" or "such as" is intended to present the concept in a concrete manner.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

In order to facilitate understanding of the present application, the related technologies involved in the embodiments of the present application are now described.

5G communication technology is the latest generation of cellular mobile communication technology and an extension of the fourth generation mobile communication technology, the third generation mobile communication technology and the second generation mobile communication technology. The performance goals of 5G are high data rates, reduced latency, energy savings, cost reduction, increased system capacity and large-scale device connectivity.

The communication between UEs involved in the communication system is widely called sidelink (slidelink, SL) communication. For example, the sidelink may include sidelink transmission in a vehicle wireless communication system, or sidelink transmission in a device-to-device (D2D) communication system.

UE can be a mobile phone (mobile phone), tablet computer (Pad), computer with wireless transceiver function, vehicle-mounted terminal, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, industrial control ( Wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, and transportation safety Wireless terminals, wireless terminals in smart cities (smart cities), wireless terminals in smart homes (smart homes), terminal equipment in 5G networks or future evolved public land mobile communication networks (public land mobile network, PLMN) Terminal equipment, on-board unit (OBU), vehicle box (also known as vehicle T-Box (telematics box)), roadside unit (Road Side Unit, RSU), vehicle, intelligent driving vehicle or capable Devices or chips that implement the functions of the aforementioned equipment, etc. The embodiments of this application do not limit application scenarios.

The methods and steps implemented by the UE in this application can also be implemented by components (such as chips or circuits) that can be used in the UE. In this application, the aforementioned UE and components (such as chips or circuits) that can be disposed on the aforementioned UE may also be referred to as terminal equipment or terminals.

In this embodiment of the present application, the terminal device or the network device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. This hardware layer includes hardware such as central processing unit (CPU), memory management unit (MMU) and memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as Linux operating system, Unix operating system, Android operating system, iOS operating system or windows operating system, etc. This application layer includes applications such as browsers, address books, word processing software, and instant messaging software. Moreover, the embodiments of the present application do not specifically limit the specific structure of the execution subject of the method provided by the embodiment of the present application, as long as the program that records the code of the method provided by the embodiment of the present application can be run to provide according to the embodiment of the present application. For example, the execution subject of the method provided by the embodiment of the present application can be a terminal device or a network device, or a functional module in the terminal device or network device that can call a program and execute the program.

Figure 1 shows an example of a communication system to which embodiments of the present application are applied, including sideline communication systems such as V2X communication systems and D2D communication systems. As shown in Figure 1, the side travel communication system can include: SL communication between vehicle-mounted terminals and vehicle-mounted terminals (Vehicle to Vehicle, V2V), and SL communication between vehicle-mounted terminals and roadside infrastructure (Vehicle to Infrastructure, V2I) , SL communication (Vehicle to Pedestrian, V2P) between vehicle-mounted terminals and pedestrians, communication between terminal devices with energy-saving requirements, communication between pedestrians and vehicle-mounted terminals, communication between pedestrians and pedestrians, and communication between vehicle-mounted terminals and Uplink and downlink communication between network devices (Vehicle to Network, V2N), etc. The D2D communication system includes SL communication between terminal 1 and terminal 2.

In addition, this application can be applied in systems with direct communication between terminals such as V2X and D2D, and is also applicable to communication scenarios with and without network coverage, as shown in Figure 2. This application does not specifically limit this .

For example, as shown in Figure 2, in a scenario where UE-1 is covered by the network signal of base station 1, UE-1 can communicate with UE-2 through the SL resources scheduled by the base station. This resource can be called authorized resources or authorized frequency bands. . In addition, UE-1 can also communicate without using the base station scheduling mode. UE-1 can perform resource self-selection, that is, select resources for sidelink communication from the resource pool to communicate with UE-3 that is outside the network coverage. , this resource can be called an unlicensed resource or an unlicensed frequency band. As shown in Figure 2, terminals UE-2 and UE-4 respectively within the signal coverage of different base stations can communicate. Since UE-3 and UE-5 are both within non-coverage, they can be built using self-selected resources. SL link for communication.

It should be understood that the resources in this application refer to time-frequency resources. The spectrum used by SL communications can be unlicensed frequency bands, licensed frequency bands and/or dedicated frequency bands. Before the UE uses the unlicensed frequency band for transmission, the UE needs to sense whether the channel is idle before accessing the channel and starting to send data. If the channel has remained idle for a certain period of time, it can occupy the channel. If the channel is not idle, it needs to Wait for the channel to become idle again before occupying the channel. Various forms of UE working on different communication protocols require Only by meeting regulations can unlicensed frequency bands be used, so that spectrum resources can be used relatively fairly and efficiently. For example, the UE can compete for the channel through the LBT mechanism.

Among them, the LBT mechanism is a channel access rule based on random back-off. LBT access methods generally use energy-based detection and/or signal type-based detection methods. For example, energy-based detection will set a corresponding detection threshold (Energy Detection Threshold). When the energy detected by the UE exceeds the detection threshold, it is judged that the channel is busy, and access to the channel is not allowed; when the energy detected by the UE is lower than the detection threshold time limit, and the energy is lower than the detection threshold for more than a period of time, the channel is considered idle and access to the channel is allowed.

In addition, unlicensed spectrum resources can be shared between different terminal devices, that is, as long as they comply with certain regulations, multiple terminal devices can use the spectrum to receive and send information. For example, UE1 obtains a channel occupancy time (COT) of part of the spectrum resources in the unlicensed frequency band through LBT, where COT is the length of time that information can be sent continuously corresponding to the contended spectrum resources. After UE1 obtains the COT, it can share the spectrum with other UEs and send the available resource information in the COT, including the corresponding time and frequency domain location, to other UE2. After UE2 receives the shared information, it can use it at the specified time. Specify frequency domain resources to send information.

It should be noted that equipment used in D2D technology is generally half-duplex equipment, which means that the UE can only be in the state of receiving or sending information at the same time and does not have the ability to send and receive information at the same time.

Currently, for SL communication, network equipment can (pre)configure a resource pool for the UE. An SL resource pool includes several sub-channels in the frequency domain, and the unit in the time domain is an SL slot. One of the sub-channels consists of a set of consecutive physical resource blocks (PRBs). The multiple PRBs can represent the size of the sub-channel, and the specific value is configured by the upper layer to the resource pool. In the following embodiments of the present application, RB may refer to PRB.

An SL slot is located in a slot in the time domain and occupies multiple consecutive symbols. The starting symbol position of the SL slot (start symbol) and the number of occupied continuous symbols (sl-LengthSymbols) are both Configured by senior management. All SL slots in a resource pool have the same starting position in the time domain and the same number of continuous symbols in the time domain. The SL physical channels that can be transmitted on SL time slots include Physical Sidelink Shared Channel (PSSCH), Physical Sidelink Broadcast Channel (PSBCH), and Physical Sidelink Control Channel (Physical Sidelink Control Channel). , PSCCH) and sidelink physical feedback channel (Physical Sidelink Feedback Channel, PSFCH).

The resource pool configured for sending information may be called a TX resource pool, and the resource pool configured for receiving information may be called an RX resource pool. For a given time, the UE can only send PSCCH or PSSCH in one TX resource pool, but can receive information in multiple RX resource pools.

For the unlicensed spectrum resources of FR1, the UE can perform LBT on each 20MHz channel before sending SL data, and can perform the channel access process on multi-channel transmission. One transmission can be performed on multiple channels at the same time. In order to avoid a 20MHz LBT channel appearing in different resource pools, a resource pool configured for the UE can contain at least one channel with a 20MHz bandwidth. As shown in Figure 3a, the resource pool of the UE can include multiple channels with a 20MHz bandwidth. , such as channel 1, channel 2, channel 3 and channel 4.

As shown in Figure 3b, an LBT channel consists of an RB set and guard bands at both ends. The guard bandwidth is used to ensure that the signal/energy on the current channel will not cause interference to adjacent channels. The protection bandwidth at both ends can be symmetrical or asymmetrical, that is, the number of PRB resources included in the two parts of the bandwidth may not be equal.

When a terminal passes LBT on multiple channels in the unlicensed frequency band, the resources available to the terminal at this time are not only the resources on the RB sets in the two channels, but also include the guard band between the two adjacent RB sets. The above available resources Part of the frequency domain resources is called a resource block set (RB set, also called RB set). As shown in Figure 3b, an LBT channel (20MHz) includes two parts: the RB set and the guard bandwidth. Therefore, when the position and size of the guard bandwidth are determined, the starting RB position, the ending RB position of the RB set, and the RBs in the RB set The number is also determined. In addition, when the UE performs LBT operations on multiple consecutive 20MHz channels and successfully accesses the channel, the guard bandwidth between the two RB sets can be used to transmit data and improve resource utilization, that is, the RBs in the portion of the guard bandwidth shown in the figure Can be used to transfer resources. For a certain SCS configured carrier, the UE's protection bandwidth can be determined by the high-layer parameters startCRB and nrofCRBs. For example, when a UE is configured with n-1 protection bandwidths, the UE can determine each of the n available RB sets according to the parameters startCRB and nrofCRBs corresponding to the n-1 protection bandwidths. The starting RB, the ending RB and the number of RBs in the RB set. The specific determination method will be introduced in the specific implementation of the application below, and will not be described again here.

Among them, based on different carriers and sub-carrier spacing (SCS), the protection bandwidth configured for the UE may be different, so the determined RB set is different, and the number of RBs in the RB set may also be different. For example, if SCS=15KHz, the number of RBs in an RB set ranges from 100 to 110; and for SCS=30KHz, at most one RB set contains 56 RBs, and the number of RBs in other RB sets ranges from Between 50 and 55. For SCS=60KHz, there is no interlace RB structure.

In one implementation, the LBT mechanism needs to meet national and regional regulatory requirements for the use of unlicensed frequency bands when accessing unlicensed spectrum. Taking the 5GHz frequency band as an example, when a UE accesses a 20MHz channel, it needs to meet at least the minimum occupied channel bandwidth. (Occupied Channel Bandwidth, OCB) requirements can occupy the channel. For example, if the minimum OCB requirement is at least 80% of the normal bandwidth, taking 20MHz as an example, that is, the resources to be transmitted by a certain UE need to occupy at least 16MHz of bandwidth before it can seize the 20MHz channel.

In order to meet the above OCB requirements, a resource set allocation method based on interleaved distribution is currently introduced in 5G. By dividing a 20MHz bandwidth into multiple interleaved resource block sets, an interleaved resource block set is referred to as an interleaved resource block. Set (denoted as interlace), where each interlace consists of the same/approximately the same number of dispersed RBs. The interlace resource allocation method can be applied to the selection of unlicensed spectrum for sidelinks.

For example, for a 20MHz bandwidth channel, define the number of RBs included in an interlace to be no less than 10. If SCS is equal to 15KHz, the number of RBs included in the RB set in a 20MHz channel ranges from 100 to 110, and a 20MHz channel includes 10 interlaces. If the total number of RBs is 100, then the number of RBs in 10 interlaces are all 10; if the total number of RBs is 110, then the number of RBs in the 10 interlaces is 11; if the total number of RBs is not equal to 100 or 110, the number of RBs in the 10 interlaces may be different at this time, that is, the number of RBs in some interlaces may be different. The number of interleaved RBs is 10, and the number of interleaved RBs in partial interlace is 11.

In addition, if SCS is equal to 30KHz, the number of RBs included in a 20MHz channel ranges from 50 to 56, then a 20MHz channel can include 5 interlaces, where the number of interleaved RBs in part (or all) of the interlaces The number of interlaced RBs in some (or all) interlaces may also be 11.

Furthermore, for broadband transmission, if the resource block corresponding to the guard band is allowed to be used, the number of available RBs can also include the RB resources included in the guard band.

In one implementation, as defined in Rel-16, the subchannel size can be configured as 10, 12, 15, 20, 25, 50, 75 or 100 RBs, and the UE can determine according to the (pre)configuration of the resource pool. Use continuous sub-channels for data transmission, or use sub-channels composed of staggered RBs for data transmission. For example, assuming that an interlace includes at least 10 RBs, if the subchannel size configured in the resource pool is 10 RBs, and the resource pool is configured to disable interlace transmission, the UE can determine a subchannel composed of 10 consecutive RBs for data transmission. ; If the resource pool is configured to enable interlace transmission, the UE can determine to use a subchannel composed of 10 staggered RBs for data transmission.

As shown in Figure 4a, for example, the RB set includes multiple sub-channels, where the sub-channels may be composed of consecutive RBs, such as sub-channel 1 and sub-channel 2 shown on the left in Figure 4a. The sub-channel can also be an interlace composed of staggered distributed RBs, such as sub-channel 1 shown on the right in Figure 4a, which corresponds to interlace 1; and sub-channel 2, which corresponds to interlace 2.

As described above, whether the resource pool is configured with continuous RBs or staggered RBs as sub-channels, the sub-channel can be used as the minimum unit for SL resource allocation. For scenarios where interlace transmission is disabled in the resource pool, PSCCH and PSSCH can be in the manner defined in Rel-16, that is, PSCCH is located on the minimum indicated subchannel of the allocated PSSCH and is always within a subchannel. For the scenario where interlace transmission is enabled in the resource pool, that is, PSCCH and PSSCH can adopt interlace transmission, and PSCCH and PSSCH can reuse similar design principles, that is, the starting position of PSCCH is aligned with the starting position of the allocated PSSCH, and is always in Within a sub-channel containing interlace RB.

As with Rel-16, the resource pool (pre-)configuration will ensure that the size of the PSCCH allocation is no larger than the sub-channel size, so that the UE only needs to blindly decode one PSCCH in a given sub-channel. For example, if the resource pool enables interlace, the sub-channel size is the same as the size of an interlace (for example, 10 PBRs), a PSCCH/PSSCH transmission has two allocated sub-channels, PSCCH and PSSCH can be time-division multiplexed, TDM) and frequency division multiplexing (Frequency Division Multiplexing, FDM), but PSCCH can always be allocated in one sub-channel.

In addition, for a resource pool composed of multiple channels, that is, the resource pool includes multiple 20MHz bandwidths, there are two possible resource allocation methods. In mode 1, the sub-channel corresponds to at least one interlace in the resource pool, that is, for example, for 15KHz SCS Configuration, 20MHz bandwidth corresponds to 10 interlaces. When a subchannel corresponds to an interlace in the resource pool, as shown in Figure 4b, subchannel 1 corresponds to interlace-1 in the resource pool, and subchannel 2 corresponds to interlace-2 in the resource pool. This When the number of sub-channels in the resource pool is equal to 10, it is equal to the number of interlaces in the resource pool.

In method 2, the sub-channel corresponds to at least one interlace in each 20 MHz, that is, the interlace in one 20 MHz is first numbered sequentially, and then the interlace in the next 20 MHz is sequentially numbered, and then the sub-channel numbers are continued according to the above numbering. Specifically, the interlace sequence number within a 20MHz includes N sub-channels, and each interlace corresponds to the sequence number of the sub-channel; then the sequence numbering continues with the next 20 MHz, the interlace sequence number is ranked 2N, and the sub-channel sequence number is also ranked accordingly. 2N. As shown in Figure 4b, the RB resources in interlace-1 belong to the same interlace, but belong to different sub-channels, that is, sub-channel 1 or sub-channel 11. In addition, for a data transmission, if multiple interlaces are required to complete the transmission, in the sub-channel In terms of channel selection, it can support both continuous interlace selection (that is, the interlace sequence numbers are continuous) and discontinuous interlace selection (that is, the interlace sequence numbers are discontinuous), but the PSCCH is always at a fixed position on the same sub-channel.

Specifically, in order to meet the OCB regulatory requirements in some regions, for unlicensed spectrum use, SL can reuse the aforementioned interlace structure or the aforementioned sub-channel definition. However, the size of the RB set configured for the UE by different operators or network equipment may vary. Different, the number of RBs included in the interlace of the RB set may also be different at this time. When there is no network coverage or in a scenario without network intervention, when the communicating parties do not know the size information of the other party's RB set, if the sending UE according to its own When sending data using the configured RB set resources, since the receiving UE does not know the guard band or RB set configuration of the sending UE, the receiving UE needs multiple blind checks to correctly obtain the resource occupation information of the sending UE, resulting in blind detection complexity for the receiving UE. increases, communication efficiency decreases.

In another implementation, for continuous RB transmission, for example, a certain sub-channel is composed of a guard band and part of the RBs in the RB set. During single-channel access, due to the different configurations of the guard band, then, The PRB resources that can be used by the sub-channel where the guard band is located are also different. For this continuous transmission structure, it is possible to avoid using the sub-channel where the guard band is located to transmit information. As shown in Figure 4c, subchannel 1 includes the guard band and some RBs in RB set-1, so the use of this subchannel 1 to transmit information can be avoided.

In order to solve the above problems, embodiments of the present application provide a method for determining unlicensed spectrum resources. By configuring both communicating UEs to transmit information using multiple RB resources at fixed positions in the interlaced resource block set interlace, the receiving UE It can avoid the increase in the number of blind checks caused by not knowing the resource information of the RB in the interlace occupied by the sent data, and can effectively improve the communication efficiency. Furthermore, during the initial communication, the communicating parties can first send and receive information according to the N RBs at fixed positions in the interlace; during subsequent communications, the communicating parties can exchange their respective RB set information to determine the final resources based on the RB information of both parties. Choose to improve resource utilization.

In addition, the communication device in Figure 1 of the embodiment of the present application can be a functional module in a device, a network element in a hardware device, such as a communication chip in a mobile phone, or a software function running on dedicated hardware. Or a virtualized function instantiated on a platform (e.g., cloud platform).

The communication device in Figure 1 can be implemented by the communication device 500 in Figure 5 . FIG. 5 shows a schematic diagram of the hardware structure of a communication device applicable to embodiments of the present application. The communication device 500 includes at least one processor 501, a communication line 502, a memory 503 and at least one communication interface 504.

The processor 501 can be a general central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more processors used to control the execution of the program of the present application. integrated circuit.

Communication line 502 may include a path, such as a bus, that carries information between the above-mentioned components.

The communication interface 504 uses any device such as a transceiver to communicate with other devices or communication networks, such as an Ethernet interface, a RAN interface, a wireless local area networks (WLAN) interface, etc.

The memory 503 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory (RAM)) or other type that can store information and instructions. A dynamic storage device can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can Any other media accessed by a computer, without limitation. The memory may exist independently and be connected to the processor through the communication line 502 . Memory can also be integrated with the processor. The memory provided by the embodiment of the present application may generally be non-volatile. Among them, the memory 503 is used to store computer execution instructions involved in executing the solution of the present application, and the processor 501 controls the execution. The processor 501 is used to execute computer execution instructions stored in the memory 503, thereby implementing the method provided by the embodiment of the present application.

Optionally, the computer-executed instructions in the embodiments of the present application may also be called application codes, which are not specifically limited in the embodiments of the present application.

In specific implementation, as an embodiment, the processor 501 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 5 .

In specific implementation, as an embodiment, the communication device 500 may include multiple processors, such as the processor 501 and the processor 507 in FIG. 5 . Each of these processors may be a single-CPU processor or a multi-CPU processor. A processor here may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).

In specific implementation, as an embodiment, the communication device 500 may also include an output device 505 and an input device 506. Output device 505 communicates with processor 501 and can display information in a variety of ways. For example, the output device 505 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. wait. Input device 506 communicates with processor 501 and may receive user input in a variety of ways. For example, the input device 506 may be a mouse, a keyboard, a touch screen device, a sensing device, or the like.

The above-mentioned communication device 500 may be a general-purpose device or a special-purpose device. In a specific implementation, the communication device 500 may be a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal, an embedded device, or a device with a similar structure as shown in Figure 5 . The embodiment of the present application does not limit the type of communication device 500.

The communication method provided by the embodiment of the present application is described in detail below.

This embodiment of the present application provides a method for determining resources of an unlicensed spectrum, which is applied in a scenario where a first terminal sends information to a second terminal through an unlicensed spectrum. As shown in Figure 6, the method may include the following steps.

S601: The first terminal accesses the channel and determines the first set of interleaved resource blocks.

In the embodiment of this application, the UE determines the resource location and size of the RB set(s) in the resource pool based on the guard band configuration information. When the resource pool contains multiple RB sets, the guard band frequency between two adjacent RB sets belongs to Domain resources also belong to the resource pool, that is, the available resources in the resource pool at this time are the union of the protection bandwidth between the RB set and the adjacent RB set. The PRB resource set in the resource pool is called the candidate resource set.

In one implementation, according to the foregoing introduction, the first terminal can access the channel through the LBT mechanism, obtain the right to use the channel, and determine the frequency domain resources occupied by the sidelink data in the COT based on the size of the sidelink data. For example, UE1 performs LBT in units of 20 MHz bandwidth resources to determine the resource set occupied by the transmission data, where the occupied resource set may include a continuous RB resource set, or may include multiple interleaved resource sets.

In addition, the carrier of the UE can have multiple RB sets. The frequency domain starting position of a resource pool can be the starting position of an RB set, and its frequency domain ending position can be the ending position of an RB set. That is, a resource pool has at least Contains one RB set, and may also include time-frequency resources greater than one RB set, such as including one RB set and part of the time-frequency resources in another RB set. For example, when the frequency domain resources in a certain resource pool include a subset of the RB set, since the channel unit for the LBT mechanism in the unlicensed spectrum is a 20MHz bandwidth channel, in some regions or countries, the resources of the subset of the RB set cannot be Meeting the requirements of OCB regulations means that the resource cannot be used to send information, resulting in reduced resource utilization.

In the embodiment of the present application, the available resource set determined by UE1 includes a staggered resource set as an example for description.

For example, the first terminal UE1 determines that the available resource set includes at least one staggered resource set through the LBT access channel.

For example, if the SCS is equal to 15KHz and the number of RBs included in a 20MHz RB set ranges from 100 to 110, then the RB set may include 10 interlaces, interlace-1, interlace-2,...interlace- 10. Among them, the number of RBs in the 10 interlaces may be the same or different, and the number of RBs in the interlaces may be 10 or 11.

In one implementation, UE1 determines one or more available interlace resources, and may first perform LBT on the RB set or 20 MHz channel, and then determine which one or more interlace resources to select. Alternatively, UE1 may also first determine which interlace resource(s) to select, and then perform LBT on one or more RB sets or one or more 20 MHz channels where the one or more interlace resources are located.

In the embodiment of the present application, UE1 determines the available resource set through LBT. For example, the first interleaved resource set (interlace-1) included in the available resource set can be used as an example to introduce the embodiment of the present application. Therefore, UE1 can send information to UE2 through part or all of the resources in the first interleaved resource set. For example, the first interleaved resource set interlace 1 includes M interleaved RBs.

Wherein, the UE may determine the information of the RB set corresponding to each protection bandwidth according to the configuration information of at least one configured protection bandwidth. Among them, one protection bandwidth corresponds to at least two RB sets. In addition, the UE can determine the frequency domain resource set of the resource pool according to the configuration information of the resource pool.

In one implementation, when the UE supports large-bandwidth transmission, the UE's candidate resource set may also include RBs occupied by the protection bandwidth, that is, RBs between two adjacent RB sets. This resource can be used for sideline communications between UEs, including the UE sending and receiving at least one of the following physical channels: such as PSCCH, PSSCH, PSDCH, PSFCH or PSBCH, etc., where the service types carried by PSSCH can include unicast, Multicast and/or broadcast communication types.

Furthermore, if the UE passes LBT in at least two RB sets adjacent to the guard band, it can use the RBs included in the guard band for transmission. For example, the candidate resources of UE1 are RB resources in the resource pool. When UE1 supports the use of guard band resources, if UE1 passes LBT in both RB set-0 and RB set-1, then the available resources determined by UE1 are those in RB set-0. The RBs included and the RBs included in RB set-1, and the RBs included in the guard band between the two RB sets. If UE1 only passes LBT in RB set-1 and fails LBT in RB set-0, UE1 can only use the RB resources included in the RB set-1 and cannot use the RBs included in the guard band.

In one implementation, the UE can receive system information block (SIB) and cell-specific radio resource control (Radio Resource Control, RRC) of the network device under the coverage of the network signal. The first configuration information and the second configuration information of the sidelink are obtained through signaling or terminal-user level (UE-specific) RRC signaling. Alternatively, the UE may also use the SL first configuration information preconfigured at the factory (for example, when there is no network signal coverage).

Specifically, the first configuration information may be used to indicate the bandwidth part (BWP) configuration information of the SL and/or the SL resource pool configuration information, where the SL resource pool configuration information is used to indicate the SL resource pool. The second configuration information may be used to indicate the protection bandwidth configuration information, which may specifically include the common resource block (Common Resource Block, CRB) startCRB at which the protection bandwidth starts, and the number of CRBs nrofCRBs.

Next, a specific way for the UE to determine the RB set based on the configuration information of the guard band is introduced.

The UE can determine N _RB-set RB sets based on the obtained configuration information of N _RB- set -1 guard bands. Among them, the starting position of the guard band can be parameterized Indicates that the size of the guard band can be used represents, s∈{0,1,…,N _RB-set -2}, which represents the sth one among N _RB-set -1 guard bands, and μ represents the parameter corresponding to the subcarrier spacing.

The UE can determine the starting CRB parameters of the RB set through the following formula 1 Determine the ending CRB parameters of the RB set according to the following formula 2 in, and It can be represented by RB index.

The UE can then and The number of RBs included in the RB set is obtained as: Among them, in the above formula 1 and formula 2 Indicates the starting CRB position of the first RB set, Indicates the carrier size, that is, the number of RBs in the carrier, s∈{0,1,…,N _RB-set -1}.

As shown in Figure 7, the carrier has multiple RB sets, RB set-0 and one RB set-1 are distinguished by guard bands. When UE1 determines the resource location of the RB set and the number of RBs included in the RB set based on the parameters startCRB and nrofCRBs of the configured protection bandwidth, where the number of RBs included in each interleaved resource set in the RB set Numbers may vary. As can be seen from Figure 7, if the number of RBs in RB set-0 is 102, then it can be seen from the figure that the number of RBs in interlace-1 and interlace-2 in RB set-0 is 11, The number of RBs in interlace-3~interlace-10 is 10. That is, the sizes of interleaved resource sets with different numbers may be different.

S602: The first terminal sends the first sidelink information to the second terminal on N resource blocks among the M resource blocks.

For example, the first set of interleaved resource blocks determined by the first terminal includes M interleaved resource blocks.

That is to say, the first terminal may determine, according to the configuration, to select only part of the interleaved resources in the first interleaved resource block set for sending sideline information, such as selecting N RBs among them. Specifically, the first terminal determines N resource blocks among the M resource blocks, and the N resource blocks belong to the first interleaved resource block set, where N and M are positive integers, and the value of N is smaller than the value of M.

In an implementation manner, the value of N may be preconfigured by the first terminal, or configured by the network device for the first terminal, or predefined by the protocol.

In one implementation, the value of N may be 10.

For example, if N is set to 10, UE1 only chooses to use 10 RBs in interlace-1 to send the first sidelink information. If N is preconfigured to be 5, UE1 only chooses to use 5 RBs in interlace-1 to send the first sidelink information.

In one implementation, the N resource blocks are N resource blocks with the smallest or largest index among the M resource blocks, or include N resource blocks located in the middle of the M resource blocks.

For example, as shown in Figure 7, interlace-1 contains 11 RBs with RB indexes {RB0, RB10,..., RB100}. If N=5, UE1 can select the 5 RBs with the smallest RB index, and UE1 can only transmit on frequency domain resources with RB indexes {RB0, RB10, RB20, RB30, RB40}. Alternatively, UE1 can select the five RBs with the largest RB index, and then UE1 can only transmit in the frequency domain resources with RB indexes {RB100, RB90, RB80, RB70, RB60}. Alternatively, UE1 can select the 5 RBs with RB indexes in the middle of the RB set, and then UE1 can only transmit on frequency domain resources with RB indexes {RB40, RB50, RB60, RB70, RB80}.

S603: The second terminal determines to receive the first sideline information from the first terminal on N resource blocks among the L resource blocks.

Among them, similar to the method of step S601, the second terminal can obtain the configuration information of the resource pool and protection bandwidth through the first configuration information and the second configuration information of the network device configuration, determine the guard band position, and determine the corresponding guard band according to the guard band. RB set location, and the number of RBs included in the RB set.

For example, the RB set determined by UE2 includes a second interleaved resource block set, and the second interleaved resource block set includes L RBs. Then, UE2 may determine to receive information on N RBs from the L RBs included in the second interleaved resource block set according to the configured N values. Among them, N resource blocks belong to L resource blocks, where N and L are positive integers, and the value of N is smaller than the value of L.

In a possible implementation, the guard band configurations of UE1 and UE2 are different, resulting in different sizes of available RB sets of the sending end UE1 and the receiving end UE2. Through the above implementation of this application, the sending and receiving ends can use fixed RB sets in the RB set. position and a fixed number of partial RBs (N) for transmission, which can effectively reduce the number of blind detections at the receiving end due to different numbers of RBs in the interleaved resource set, and improve communication efficiency.

For example, as shown in Figure 7, the available RB set of UE1 includes 102 RBs. For each RB set in the resource pool, interlace-1 to interlace-2 of UE1 include 11 RBs, and interlace-3 ~interlace-10 all include 10 RBs. If the available RB set of UE2 contains 103 RBs, then for each RB set in the resource pool, interlace-1 to interlace-3 of UE2 contain 11 RBs, and interlace-3 to interlace-10 each contain 10 RBs. RB. According to the above method, as shown in Figure 8, when UE1 and UE2 are both configured with N=10, if UE1 and UE2 determine to use the frequency domain resources of interlace-1 to interlace-3 for communication, UE1 only takes interlace-1 , interlace-2 and the first 10 RBs of interlace-3 for data transmission, and UE2 only uses the first 10 RBs of interlace-1, interlace-2 and interlace-3 for data reception.

In one implementation, the first sideline information may include sideline control information and/or sideline data information. For example, in the above-mentioned step S602, the first terminal sends PSSCH to the second terminal on N resource blocks. The PSSCH includes first sideline information, which may specifically include sideline control information or include sideline data. That is to say, in the embodiment shown in FIG. 6 , the first terminal and the second terminal can transmit sideline data or sideline control information through a configured fixed number and fixed position of N RBs, for example, one after another The first PSSCH, the second PSSCH, etc. are transmitted through N RBs.

In one implementation, the sending end and the receiving end may use a fixed number and fixed position of N RBs to send and receive information according to the aforementioned implementation. Alternatively, the sender and receiver can only use fixed N RBs to send and receive information during the first transmission, and then inform each other of their respective RB set information or protection bandwidth information through signaling interaction, and negotiate the time and frequency of subsequent information transmission. Resource location, thereby improving the utilization of spectrum resources and further improving communication efficiency.

As shown in Figure 9, the method may also include the following steps.

S901: The first terminal accesses the channel and determines the first set of interleaved resource blocks.

Refer to the related description of the aforementioned step S601.

S902: The first terminal sends the first sideline information to the second terminal on N resource blocks among the M resource blocks.

Refer to the related description of the aforementioned step S602.

In one implementation, the first sidelink information does not include sideline data and may include first sidelink synchronization information. The sidelink synchronization information may include a sidelink synchronization signal and a PBCH block. For example, the first sidelink information may be the first S-SSB.

It should be noted that the sidelink synchronization information exchanged between the first terminal and the second terminal can be transmitted through the existing resource selection method, or at a designated resource location, or through the above resource determination method provided by this application. Send sidelink synchronization information.

S903: The second terminal determines to receive the first sideline information from the first terminal on N resource blocks among the L resource blocks.

Refer to the related description of the aforementioned step S603.

That is to say, the second terminal can determine that it can receive the first sideline information from the first terminal on N resource blocks in the second resource set according to the predefined or configured value of N, for example, obtain S-SSB , or obtain the SCI or other indication information included in the first side row information.

S904: The second terminal sends the first indication information to the first terminal.

For example, if at least one protection bandwidth configured by the second terminal includes the first protection bandwidth, and the RB set determined by the second terminal according to the first protection bandwidth includes L resource blocks, the first indication information may be used for Information indicating the first protection bandwidth, the first protection bandwidth is used to determine L resource blocks, and/or the first indication information may be used to indicate L resource blocks.

In an implementation manner, the second terminal may send the first indication information through some or all of the resources in the N RBs determined in the aforementioned step S903.

Correspondingly, the first terminal may receive the first indication information from the second terminal on N resource blocks, and determine the L resource blocks included in the available RB set of the second terminal according to the content indicated by the first indication information.

In an implementation manner, the first indication information may be carried in the physical sidelink broadcast channel PSBCH, or carried in Radio Resource Control (Radio Resource Control, RRC) signaling, or carried in the media access control (Medium Access Control, MAC) control element (control element, CE), or carried in sidelink control information (Sidelink Control Information, SCI).

S905: The first terminal sends the second instruction information to the second terminal.

For example, if at least one protection bandwidth configured by the first terminal includes a second protection bandwidth, and the RB set determined by the first terminal according to the second protection bandwidth includes M resource blocks, the second indication information may be used for Information indicating the second protection bandwidth, the second protection bandwidth is used to determine M resource blocks, and/or the second indication information may be used to indicate M resource blocks.

In an implementation manner, the first terminal may send the second indication information to the second terminal through part or all of the resources in the N RBs determined in the aforementioned step S902.

In one implementation, the second indication information may be carried in the sidelink synchronization signal and the PBCH block S-SSB, such as the first S-SSB in step S902. That is to say, steps S902 and S905 may are sent at the same time, that is, the first S-SSB may include second indication information, used to indicate to the second terminal the M resource blocks on the first terminal side.

Alternatively, the second indication information may also be carried in the physical sidelink broadcast channel PSBCH of the S-SSB, or carried in Radio Resource Control (Radio Resource Control, RRC) signaling, or carried in the media access control (Medium Access Control, MAC) control element (control element, CE), or carried in sidelink control information (Sidelink Control Information, SCI).

For example, for the unicast scenario of SL communication, the sending end UE1 sends information to UE2, then UE1 can send the second indication information to UE2 through the RRC signaling of the PC5 port, and the second indication information is used to indicate the RB configured by UE1. Collection of information. In addition, the receiving end UE2 may also send the first indication information to the UE1 through the RRC signaling of the PC5 port, and the first indication information is used to indicate the information of the RB set configured by the UE2.

S906: The first terminal determines to send the second sideline information to the second terminal on Y resource blocks.

The sending end UE1 can determine the resources for subsequent transmission of sideline information in the following two ways, where the second sideline information includes sideline data, which may be, for example, PSSCH. Correspondingly, the receiving end UE2 can also determine the subsequent Resource location to receive sidelink information from UE1.

Method 1: The sender determines to use the RB set with a smaller number of interlace RBs among the RB sets of the sender and the receiver as the transmission resource.

For example, if the interlace in the RB set of UE1 includes M RBs, and the interlace in the RB set of UE2 includes L RBs, then the value of Y is the smaller of the M value and the L value.

In one implementation, the first terminal may determine, according to the first indication information received from the second terminal, that interlace includes M RBs in the available resource set of the first terminal, and that interlace includes M RBs in the available resource set of the second terminal. The interlace includes L resource blocks. If M>L, it is determined to send the second sideline information to the second terminal on L resource blocks, that is, Y=L. If M<L, it is determined to send the second sideline information to the second terminal on M resource blocks, that is, Y=M.

In another implementation manner, the first terminal determines the intersection of the first terminal and the second terminal, that is, if the intersection of M resource blocks and L resource blocks of the interlace is Y resource blocks, then the first terminal determines the intersection between the first terminal and the second terminal. Send the second sideline information to the second terminal on Y resource blocks.

As shown in Figure 10, according to the aforementioned method, UE1 and UE2 select N RBs at fixed positions on the interlace for data transmission and reception when exchanging data for the first time and exchanging the first/second indication information of the RB set (such as interaction through RRC signaling). , if N=10, select the first 10 RBs in each interlace for transmission. When the second sidelink information (sidelink data) is subsequently transmitted, when UE1 and UE2 determine to perform resource selection according to method 1, because the RB set of UE1 includes 102 RBs and the RB set of UE2 includes 103 RBs, the RB set is determined =min{102, 103}=102, that is, it is determined to occupy the RB in the interlace according to the resource configuration method on the UE1 side. That is to say, sidelink data is transmitted according to the configuration method of UE1's RB set. If UE1 and UE2 decide to use the frequency domain resources of interlace-1 to interlace-10, UE1 takes the first 11 RBs of interlace-1 and interlace-2. , and the first 10 RBs of interlace-3 to interlace-10 send the second sideline information, so that UE2 can receive the information in the corresponding resources according to the same method 1, that is, in the first 11 RBs of interlace-1 and interlace-2 , and the first 10 RBs of interlace-3 to interlace-10 receive the second sideline information.

Method 2: The sending end determines to use the sending end's RB set as the transmission resource.

That is to say, the first terminal sends the second sideline information to the second terminal on M resource blocks, and correspondingly, the second terminal receives the second sideline information on M resource blocks.

In other words, the sender sends according to its own configured RB set, and the receiving end receives according to the sender's RB set configuration. As shown in Figure 11, when UE1 and UE2 exchange first/second indication information (for example, through RRC signaling) according to the aforementioned method, N RBs at fixed positions on the interlace are selected to transmit and receive data, such as N=10. When UE1 and UE2 decide to perform subsequent data exchange according to method 2, if UE1 and UE2 decide to use the frequency domain resources of interlace-1 to interlace-3, since the RB set of UE1 includes 52 RBs, the RB set of UE2 includes 55 RBs, you can perform data interaction according to the configuration method of UE1's RB set. UE1 occupies the first 11 RBs of interlace-1 and interlace-2, and the first 10 RBs of interlace-3 to send sideline data. Then UE2 only Take the first 11 PRBs of interlace-1 and interlace1-2 and the first 10 RBs of interlace 3 to receive and decode the sideline data.

In one implementation, data is exchanged between the first terminal and the second terminal. The resource selection method adopts the above-mentioned method 1 or method 2, which may be pre-configured. For example, both UE1 and UE2 are pre-configured to use method 1. Determine transmission resources. Alternatively, the resource selection method may also be configured by the network device. For example, the network device sends third instruction information to the first terminal and the second terminal for configuration. Alternatively, it may also be interactive between the communicating parties. For example, the first terminal sends third indication information to the second terminal to instruct the method 2 to determine the transmission resources.

For example, the method may further include: the network device sending third indication information to the first terminal/second terminal, where the third indication information is used to indicate that the resource configuration mode corresponding to sending the second sideline information is Mode 1 or Mode 2.

For example, the third indication information may be carried in 1-bit information. When the bit value is 0, it indicates that the transmission resource is determined according to Mode 1; or, when the bit value is 1, it indicates that the transmission resource is determined according to Mode 1.

Wherein, when only one side of the communicating parties is configured with the resource configuration mode, the resources can be determined according to the resource configuration mode. If both communicating parties are configured with resource configuration methods, but the resource determination methods configured by the communicating parties are inconsistent, the transmission resources can be determined by pre-agreement, for example, using the resource configuration method of the sender, such as method 2 configured by the sender UE1. Alternatively, it may also be determined through interactive resource configuration. For example, UE1 sends third indication information to UE2 to instruct the transmission resources to be determined in manner 1.

In one implementation, the specific indication content of the first indication information or the second indication information in the aforementioned steps may be the information of each protection bandwidth in the resource pool configured by the terminal, or the first indication information or the second indication information may only be Information indicating the protection bandwidth with the largest number of RBs in the RB set corresponding to the terminal-side protection bandwidth.

In one implementation, if the content indicated by the first indication information or the second indication information is different, the number of bits carrying the information is different. For example, the first indication information or the second indication information can be carried in X bits. Wherein, the value of

The following lists several possible indication modes of the first indication information or the second indication information, as well as the number of bits required for different indication modes, that is, the value of X.

1. Information about n-1 guard bands in the interactive resource pool:

If the sender and receiver exchange the configuration information corresponding to the guard band, the startCRB parameter and the nrofCRB parameter, assuming there are n RB sets in the resource pool, n-1 guard band information is required.

Among them, the startCRB parameter has a total of 275 values. The number of bits required to indicate a startCRB parameter is: ceil(log2(275))=9bit. The nrofCRBs parameter has a total of 16 values. The number of bits required to indicate a nrofCRBs parameter is: ceil. (log2(16))=4bit, therefore, the information indicating a guard band requires 9+4=13bit.

Then the number of bits required for n-1 guard band information is: X=(n-1)*(9+4)=13*(n-1). For example, a maximum of 4 guard bands can be configured for the UE, that is, the maximum value of n-1 is 4, so the maximum value of X is: X=13*4=53 bit.

Then, the receiving end of the first/second indication information can obtain the RB set information through the guard band information.

2. Information about n RB sets in the interactive resource pool:

For example, when the SCS is 15KHz, the number of RBs included in the RB set ranges from 100 to 110, with a total of 11 values. In this case, X=n*ceil(log2(11))=n* is required 4bit. For example, a maximum of 5 RB sets are configured for the UE, so the maximum value of X is: X=4*5=20 bits.

If the SCS is 30KHz, the number of RBs included in the RB set ranges from 50 to 56, with a total of 7 values. In this case, X=n*ceil(log2(7))=n*3bit is required. For example, a maximum of 5 RB sets are configured for the UE, so the maximum value of X is: X=3*5=15 bits.

3. Information about m-1 guard bands that have successfully exchanged LBT:

Assuming that the number of channels on which the UE's current LBT is successful is m, it can only exchange information on m-1 guard bands on which LBT is successful. Among them, compared with the aforementioned interaction mode 1 or 2, m is less than or equal to n.

If the startCRB parameter and nrofCRB parameter of the guard band are interacted, assuming that there are m RB sets LBT passing through in the resource pool, m-1 guard band information is required. According to the aforementioned algorithm, the number of bits required for n-1 guard band information is: X=(m-1)*(9+4)=13*(m-1). The UE is configured with a maximum of 4 guard bands, that is, the maximum value of m-1 is 4, so the maximum value of X is X=13*4=53bit.

4. Information about the m RB sets where the LBT interaction is successful:

Assume that the number of channels on which UE's current LBT is successful is m, then only the information of m RB sets on which LBT is successful can be exchanged. Among them, compared with the aforementioned interaction mode 1 or 2, m is less than or equal to n.

For example, when the SCS is 15KHz, the number of RBs included in the RB set ranges from 100 to 110, with a total of 11 values. The number of bits required at this time is: X=m*ceil(log2(11 ))=m*4bit. For example, a maximum of 5 RB sets are configured for the UE, so the maximum value of X is: X=4*5=20 bits.

If the SCS is 30KHz, the number of RBs included in the RB set ranges from 50 to 56, with a total of 7 values. The number of bits required at this time is: X=m*ceil(log2(7))=m* 3bit. For example, a maximum of 5 RB sets are configured for the UE, so the maximum value of X is: X=3*5=15 bits.

5. Information about the guard band that occupies the largest number of RBs in the interactive resource pool:

Among them, the UE's resource pool is configured with configuration information corresponding to n-1 guard bands, and only the startCRB parameter and nrofCRB parameter of the guard band corresponding to the RB set with the largest number of RBs can be exchanged. The receiving end can use this information as a reference for other guard bands, or this method can be used when the guard band configurations of both communicating parties are the same.

According to the above calculation, it can be seen that the number of bits required to configure the startCRB parameter and nrofCRB parameter of a guard band is: X=(9+4)bit=13bit.

6. Information about the RB set with the smallest number of RBs among the RB sets in the interactive resource pool:

If n RB sets are configured in the resource pool of the UE, only the information of the RB set with the smallest number of RBs in the resource pool can be exchanged.

According to the above calculation, if SCS=15kHz, the number of RBs included in the RB set ranges from 100 to 110, with a total of 11 values. In this case, X=ceil(log2(11))=4bit is required.

If SCS=30KHz, the number of RBs included in the RB set ranges from 50 to 56, with a total of 7 values. The number of bits required at this time is: X=ceil(log2(7))=3bit.

Through the above implementation, the sending end and the receiving end can exchange the configuration information of their respective RB sets, thereby allowing both communicating parties to determine the resource selection method for subsequent data transmission, thereby improving resource utilization and improving communication efficiency.

Based on the foregoing embodiments, this application also provides a communication device for implementing the steps implemented by the first terminal in the foregoing embodiments. As shown in Figure 12, the communication device includes: a processing module 1201 and a transceiver module 1202.

Wherein, the processing module 1201 is used to access the channel, determine a first interleaved resource block set, the first interleaved resource block set includes M resource blocks, and determine N resource blocks, and the N resource blocks belong to the M Resource block, where N and M are positive integers, and the value of N is smaller than the value of M.

The transceiving module 1202 is configured to send the first sideline information to the second terminal on the N resource blocks.

In one implementation, N may be configured as 10.

In one implementation, the transceiver module 1202 is further configured to receive first indication information from the second terminal; the first indication information is used to indicate a first protection bandwidth, and the first protection bandwidth is used to determine L resource blocks, and/or the first indication information indicates L resource blocks, where L is a positive integer.

In one implementation, the transceiving module 1202 is specifically configured to receive the first indication information on N resource blocks.

In one implementation, the transceiver module 1202 is further configured to send second indication information to the second terminal on the N resource blocks, where the second indication information is used to indicate a second protection bandwidth. The second protection bandwidth is used to determine the M resource blocks, and/or the second indication information is used to indicate the M resource blocks.

In one implementation, the transceiver module 1202 is also configured to perform mode 1: send second sideline information to the second terminal on Y resource blocks according to the first indication information, wherein the Y The value is the smaller of the M value and the L value, or the Y resource blocks are the intersection of the M resource blocks and the L resource blocks, and the second sideline information Includes side row data.

In one implementation, the transceiver module 1202 is also configured to perform Mode 2: sending second sideline information to the second terminal on the M resource blocks, where the second sideline information includes sideline data.

In one implementation, the transceiver module 1202 is further configured to receive third instruction information from the network device; or, to send the third instruction information to the second terminal, where the third instruction information is used to instruct to send the third instruction information. The resource configuration mode corresponding to the second-side row information is mode 1 or mode 2.

In addition, based on the steps performed by the second terminal in the foregoing embodiments, the present application also provides a communication device for implementing the foregoing Steps implemented by the first terminal in the above embodiment. As shown in Figure 12, the communication device includes: a processing module 1201 and a transceiver module 1202.

Wherein, the processing module 1201 is used to determine a second interleaved resource block set, the second interleaved resource block set includes L resource blocks; determine N resource blocks, the N resource blocks belong to the L resource blocks, where , N and L are positive integers, and the value of N is smaller than the value of L.

The transceiving module 1202 is configured to receive the first sideline information from the first terminal on the N resource blocks.

In one implementation, N is preconfigured by the communication device 1200, or configured by a network device, or predefined.

In one implementation, N may be configured as 10.

In one implementation, the transceiver module 1202 is further configured to send first indication information to the first terminal, where the first indication information is used to indicate a first protection bandwidth, and the first protection bandwidth is used to determine L resource blocks, and/or the first indication information indicates L resource blocks, where L is a positive integer.

In one implementation, the transceiving module 1202 is specifically configured to send the first indication information on N resource blocks.

In one implementation, the transceiver module 1202 is further configured to receive second indication information from the first terminal on the N resource blocks, where the second indication information is used to indicate a second protection bandwidth, and the The second guard bandwidth is used to determine M resource blocks, and/or the second indication information is used to indicate the M resource blocks.

In one implementation, the transceiver module 1202 is also configured to perform method 1: the second terminal receives the second sideline information from the first terminal on Y resource blocks according to the second indication information, Wherein, the value of Y is the smaller of the M value and the L value, or the Y resource blocks are the intersection of the M resource blocks and the L resource blocks. , the second side row information includes side row data.

In one implementation, the transceiver module 1202 is also used in Mode 2: the second terminal receives the second sideline information from the first terminal on the M resource blocks according to the second indication information. , the second side row information includes side row data.

In one implementation, the transceiver module 1202 is further configured to receive third indication information from the network device; or, receive third indication information from the first terminal, where the third indication information is used to indicate receiving the The resource configuration mode corresponding to the second sideline information is mode 1 or mode 2.

In a simple embodiment, those skilled in the art can imagine that the above-mentioned communication device 1200 can take the form shown in FIG. 5 . For example, the processor 501 in Figure 5 can cause the communication device 1200 to execute the method executed by each network element/communication device in the above method embodiment by calling the computer execution instructions stored in the memory 503.

For example, the function/implementation process of the transceiver module 1202 in Figure 12 can be implemented by the processor 501 in Figure 5 calling the computer execution instructions stored in the memory 503. Alternatively, the function/implementation process of the processing module 1201 in Figure 12 can be implemented by the processor 501 in Figure 5 calling the computer execution instructions stored in the memory 503. The function/implementation process of the transceiver module 1202 in Figure 12 can be implemented by Figure 12. It is implemented by the communication interface 504 in 5.

It should be noted that one or more of the above modules or units can be implemented in software, hardware, or a combination of both. When any of the above modules or units is implemented in software, the software exists in the form of computer program instructions and is stored in the memory. The processor can be used to execute the program instructions and implement the above method flow. The processor can be built into an SoC (System on a Chip) or ASIC, or it can be an independent semiconductor chip. Processing within the processor is used to execute software instructions to perform operations or processing. In addition to the core, it can further include necessary hardware accelerators, such as field programmable gate array (FPGA), PLD (programmable logic device), or logic circuits that implement dedicated logic operations.

When the above modules or units are implemented in hardware, the hardware can be a CPU, a microprocessor, a digital signal processing (DSP) chip, a microcontroller unit (MCU), an artificial intelligence processor, an ASIC, Any one or any combination of SoC, FPGA, PLD, dedicated digital circuits, hardware accelerators or non-integrated discrete devices, which can run the necessary software or not rely on software to perform the above method flow.

Optionally, embodiments of the present application also provide a chip system, including: at least one processor and an interface. The at least one processor is coupled to the memory through the interface. When the at least one processor executes the computer program or instructions in the memory When, the method in any of the above method embodiments is executed. In a possible implementation, the chip system further includes a memory. Optionally, the chip system may be composed of chips, or may include chips and other discrete devices, which is not specifically limited in the embodiments of the present application.

Optionally, embodiments of the present application also provide a computer-readable storage medium. All or part of the processes in the above method embodiments can be completed by instructing relevant hardware through a computer program. The program can be stored in the above computer-readable storage medium. When executed, the program can include the processes of the above method embodiments. . The computer-readable storage medium may be an internal storage unit of the communication device of any of the aforementioned embodiments, such as a hard disk or memory of the communication device. The above-mentioned computer-readable storage medium may also be an external storage device of the above-mentioned communication device, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card equipped on the above-mentioned communication device, Flash card, etc. Furthermore, the computer-readable storage medium may also include both an internal storage unit of the communication device and an external storage device. The above-mentioned computer-readable storage medium is used to store the above-mentioned computer program and other programs and data required by the communication device. The above-mentioned computer-readable storage media can also be used to temporarily store data that has been output or is to be output.

Optionally, the embodiment of the present application also provides a computer program product. All or part of the processes in the above method embodiments can be completed by instructing relevant hardware through a computer program. The program can be stored in the above computer program product. When executed, the program can include the processes of the above method embodiments.

An optional embodiment of the present application also provides a computer instruction. All or part of the processes in the above method embodiments can be completed by computer instructions to instruct related hardware (such as computers, processors, access network equipment, mobility management network elements or session management network elements, etc.). The program may be stored in the above-mentioned computer-readable storage medium or in the above-mentioned computer program product.

Through the above description of the embodiments, those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above functional modules is used as an example. In actual applications, the above functions can be allocated as needed. It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be The combination can either be integrated into another device, or some features can be omitted, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated. The components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place, or they may be distributed to multiple different places. . Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in various embodiments of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above integrated units can be implemented in the form of hardware or software functional units.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application shall be covered by the protection scope of the present application. . Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A method for determining unlicensed spectrum resources, characterized in that the method includes:

The first terminal accesses the channel and determines a first interleaved resource block set, where the first interleaved resource block set includes M resource blocks;

Determine N resource blocks, the N resource blocks belong to the M resource blocks, where N and M are positive integers, and the value of N is smaller than the value of M;

The first sideline information is sent to the second terminal on the N resource blocks.
The method of claim 1, wherein the N resource blocks are N resource blocks with the smallest or largest index among the M resource blocks, or include N resource blocks located among the M resource blocks. resource block.
The method according to claim 1 or 2, characterized in that the N is preconfigured by the first terminal, or configured by a network device, or predefined.
The method according to any one of claims 1-3, wherein N is 10.
The method according to any one of claims 1 to 4, characterized in that the first sideline information includes sideline control information and/or sideline data information.
The method according to any one of claims 1 to 4, characterized in that the first sidelink information includes first sidelink synchronization information.
The method according to claim 5 or 6, characterized in that, the method further includes:

The first terminal receives first indication information from the second terminal;

The first indication information is used to indicate a first protection bandwidth, and the first protection bandwidth is used to determine L resource blocks, and/or the first indication information indicates L resource blocks, where L is Positive integer.
The method according to claim 7, characterized in that:

The first terminal receives the first indication information on the N resource blocks.
The method according to claim 7 or 8, characterized in that the first indication information is carried in the physical sidelink broadcast channel PSBCH, or is carried in radio resource control RRC signaling, or is carried in the media The access control MAC control element CE, or is carried in the sidelink control information SCI.
The method according to any one of claims 6-9, characterized in that the method further includes:

The first terminal sends second indication information to the second terminal on the N resource blocks, the second indication information is used to indicate a second protection bandwidth, and the second protection bandwidth is used to determine M resource blocks, and/or the second indication information is used to indicate the M resource blocks.
The method according to claim 10, characterized in that the second indication information is carried in the first sidelink synchronization information, or is carried in a physical sidelink broadcast channel PSBCH, or is carried in In the radio resource control RRC signaling, it is carried either in the medium access control MAC control element CE or in the sidelink control information SCI.
The method according to any one of claims 8 to 11, characterized in that the first indication information or the second indication information is carried in X bits, wherein the value of X is a positive integer, and the X is equal to the configuration It is related to at least one of the protection bandwidth, the number of resource sets in the resource pool, and the subcarrier spacing.
The method according to any one of claims 1-4 and 6-12, characterized in that the method further includes:

Method 1: The first terminal determines to send the second sideline information to the second terminal on Y resource blocks according to the first indication information, where the value of Y is the value of M. and the smaller of the L values, or the Y resource blocks are the intersection of the M resource blocks and the L resource blocks, and the second sideline information includes sideline data.
The method according to any one of claims 1-4 and 6-12, characterized in that the method further includes:

Method 2: The first terminal sends second sideline information to the second terminal on the M resource blocks, where the second sideline information includes sideline data.
The method according to claim 13 or 14, characterized in that the method further includes:

Receive third indication information from the network device; or,

Send third indication information to the second terminal, where the third indication information is used to indicate that the resource configuration mode corresponding to sending the second sideline information is mode 1 or mode 2.
A method for determining unlicensed spectrum resources, characterized in that the method includes:

The second terminal determines a second interleaved resource block set, where the second interleaved resource block set includes L resource blocks;

Determine N resource blocks, the N resource blocks belong to the L resource blocks, where N and L are positive integers, and the value of N is smaller than the value of L;

First sideline information from the first terminal is received on the N resource blocks.
The method of claim 16, wherein the N resource blocks are N resource blocks with the smallest or largest index among the L resource blocks, or include N resource blocks located among the L resource blocks. resource block.
The method according to claim 16 or 17, characterized in that the first sideline information includes sideline control information and/or sideline data information.
The method according to any one of claims 16 to 18, characterized in that the first sidelink information includes first sidelink synchronization information.
The method of claim 19, further comprising:

The second terminal sends first indication information to the first terminal, the first indication information is used to indicate a first protection bandwidth, the first protection bandwidth is used to determine L resource blocks, and/or the The first indication information indicates L resource blocks, where L is a positive integer.
The method according to claim 20, characterized in that:

The second terminal sends the first indication information on N resource blocks.
The method according to any one of claims 19 to 21, characterized in that the first indication information is carried in the physical sidelink broadcast channel PSBCH, or is carried in radio resource control RRC signaling, or, It is carried in the media access control MAC control element CE, or it is carried in the sidelink control information SCI.
The method according to any one of claims 19-22, characterized in that the method further includes:

The second terminal receives second indication information from the first terminal on the N resource blocks, the second indication information is used to indicate a second protection bandwidth, and the second protection bandwidth is used to determine M resource blocks, and/or the second indication information is used to indicate the M resource blocks.
The method according to claim 23, characterized in that the second indication information is carried in the first sidelink synchronization information, or is carried in the physical sidelink broadcast channel PSBCH, or is carried in the radio resource In the control RRC signaling, it is either carried in the medium access control MAC control element CE, or carried in the sidelink control information SCI.
The method according to any one of claims 21 to 24, characterized in that the first indication information or the second indication information is carried in X bits, wherein the value of X is a positive integer, and the X is equal to the configuration It is related to at least one of the protection bandwidth, the number of resource sets in the resource pool, and the subcarrier spacing.
The method according to any one of claims 16-18 and 20-25, characterized in that the method further includes:

Method 1: The second terminal determines to receive the second sideline information from the first terminal on Y resource blocks according to the second indication information, where the value of Y is the value of M. The smaller of the value and the value of L, or the Y resource blocks are the intersection of the M resource blocks and the L resource blocks, and the second sideline information includes sideline data.
The method according to any one of claims 16-18 and 20-25, characterized in that the method further includes:

Method 2: The second terminal determines to receive the second sidelink information from the first terminal on the M resource blocks according to the second indication information, and the second sidelink information includes sidelink data. .
A communication device, characterized in that the communication device is used to perform the method as described in any one of claims 1 to 15, or 16 to 27.
A communication device, characterized in that the communication device includes: one or more processors and one or more memories;

The one or more memories are coupled to the one or more processors, the one or more memories are used to store computer program code, the computer program code includes computer instructions, and when the one or more processors When the computer instructions are executed, the communication device is caused to perform the method as described in any one of claims 1-15, or to perform the method as described in any one of claims 16-27.
A computer-readable storage medium, characterized in that computer-executable instructions are stored in the computer-readable storage medium, and the computer-executable instructions, when called by the computer, are used to cause the computer to execute the above claims. The method according to any one of claims 1-15, or the method according to any one of claims 16-27.