WO2023024952A1 - 一种通信方法及设备 - Google Patents

一种通信方法及设备 Download PDF

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Publication number
WO2023024952A1
WO2023024952A1 PCT/CN2022/112543 CN2022112543W WO2023024952A1 WO 2023024952 A1 WO2023024952 A1 WO 2023024952A1 CN 2022112543 W CN2022112543 W CN 2022112543W WO 2023024952 A1 WO2023024952 A1 WO 2023024952A1
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WIPO (PCT)
Prior art keywords
terminal device
message
resource pool
resource
information
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PCT/CN2022/112543
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English (en)
French (fr)
Inventor
刘云
薛丽霞
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华为技术有限公司
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Priority to EP22860298.3A priority Critical patent/EP4387357A1/en
Publication of WO2023024952A1 publication Critical patent/WO2023024952A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present application relates to the technical field of communication, and in particular to a communication method and device.
  • the concept of mixed resource pool is introduced to support different types of UEs to transmit in one resource pool.
  • it can be considered to allocate different sub-resource pools (subpools) for different types of UEs in the resource pool, so that UEs can communicate in their respective sub-resource pools, reducing interference between UEs .
  • the configuration information includes more content and the signaling overhead is larger.
  • Embodiments of the present application provide a communication method and device for reducing signaling overhead when configuring a resource pool for a UE.
  • a first communication method is provided. This method can be executed by a terminal device, or by a larger device including the terminal device, or by a chip system or other functional modules, and the chip system or functional module can realize the communication of the terminal device. function, the chip system or functional module is, for example, set in a terminal device.
  • the terminal device is called, for example, a first terminal device, and the first terminal device is, for example, a first type of terminal device.
  • the method includes: determining first information, the first information is used to indicate a reference frequency domain position of a first resource pool, the first resource pool is a resource pool configured for a first type of terminal device, and the reference frequency
  • the domain position includes one or more of the start frequency domain position, the end frequency domain position, or the middle frequency domain position of the first resource pool; according to the reference frequency domain position and the second information, determine the first The frequency domain range of a resource pool, the second information includes one or more of the following: the bandwidth supported by the first type of terminal equipment, the bandwidth of a sub-channel, or the sub-channel occupied by the first resource pool the number of channels.
  • the first resource pool is a resource pool configured for a first type of terminal device, and the first type of terminal device can work in the first resource pool. It can be understood that the first type of terminal equipment works in the first resource pool.
  • the first type of terminal equipment can monitor the physical sidelink control channel (physical sidelink control channel, PSCCH) in the first resource pool, and can monitor the physical sidelink control channel (PSCCH) in the first resource pool. Receive the PSCCH in the middle, and also select resources in the first resource pool to send information.
  • PSCCH physical sidelink control channel
  • PSCCH physical sidelink control channel
  • the first resource pool can be configured for the first terminal device through the first information.
  • the pool may also be not a sub-resource pool, but an independent resource pool, thereby solving the problem of configuring a resource pool or a sub-resource pool for a terminal device.
  • the first information can configure the reference frequency domain position of the first resource pool, and the first terminal device can determine the frequency domain position of the first resource pool according to the reference frequency domain position and the second information, that is, the first The information does not need to include too much content. For example, if the first information is sent by the network device, since the first information includes less content, transmission costs can be saved.
  • the reference frequency domain position is the frequency domain position of the subchannel where the side line synchronization signal is located; or, the reference frequency domain position is the side The frequency domain position of the subcarrier with the lowest frequency where the line synchronization signal is located; or, the reference frequency domain position is the frequency domain position of the highest frequency subcarrier where the side line synchronization signal is located; or, the reference frequency domain position is the side The frequency domain position of the first subcarrier occupied by the horizontal synchronization signal.
  • the reference frequency domain position is related to the sidelink synchronization signal, so that the position of the first resource pool can be better positioned.
  • the first subcarrier is a 66th subcarrier or a 67th subcarrier.
  • the first subcarrier is, for example, the subcarrier located in the middle in the frequency domain among the subcarriers occupied by the sideline synchronization signal.
  • the sideline synchronization signal occupies 132 subcarriers, so the first subcarrier is, for example, the 66th or 66th subcarrier.
  • the 67th subcarrier If the number of subcarriers occupied by the sidelink synchronization signal changes, the first subcarrier may also be changed accordingly.
  • the first The frequency domain range of the resource pool includes the frequency domain position of the sidelink synchronization signal.
  • the sidelink synchronization signal is sent by the terminal device, and the frequency domain position of the sidelink synchronization signal is relatively fixed. All kinds of terminal devices need to monitor the side sync signal, otherwise they may not be able to sync to the sync source with the highest priority.
  • the embodiment of the present application proposes that the frequency domain range of the first resource pool allocated to the first terminal device may include the frequency domain range of the sidelink synchronization signal (or in other words, include the frequency domain position of the sidelink synchronization signal), so The first terminal device can monitor the side synchronization signal without switching the operating frequency, which simplifies the working process of the terminal device and can reduce power consumption.
  • the fourth alternative implementation manner of the first aspect may be In a selected implementation manner, the bandwidth of the first resource pool is less than or equal to the bandwidth supported by the first type of terminal device. In order to enable the first UE to support the first resource pool, the bandwidth of the first resource pool may be less than or equal to the bandwidth of the first UE, so that the first UE may transmit data through resources included in the first resource pool.
  • the fifth alternative implementation manner of the first aspect may be In an optional implementation manner, the method further includes: sending a first request message to the network device, where the first request message is used to request resources, and the resources are used to send data to the second terminal device, and the second A request message includes second indication information, where the second indication information is used to indicate that the first terminal device and/or the second terminal device is a first type of terminal device, or indicate that the first terminal device and/or The frequency band supported by the second terminal device, or indicating the bandwidth supported by the first terminal device and/or the second terminal device, or, the second indication information includes an identifier or index of the second terminal device; from the The network device receives a first response message, where the first response message is used to indicate the first resource.
  • the network device can know the capabilities of the terminal devices of both communication parties, and the network device can consider the capabilities of the first terminal device and/or the second terminal device when allocating resources for the first terminal device, so as to provide resources for the first terminal device
  • the device allocates resources that both the first terminal device and the second terminal device can support, thereby improving the success rate of communication between the terminal devices.
  • the sixth alternative implementation manner of the first aspect may be In an optional implementation manner, the method further includes: receiving a first message from the second terminal device, the first message is used to reserve the first resource; if the first message does not include the third indication information, reducing the The priority indicated by the first message, the third indication information is used to indicate that the sender of the third indication information is a terminal device of the first type; determine that the priority of the first data is higher than the reduced priority level, or determine that the reduced priority meets the second threshold, wherein the first data is data to be sent; send a second message in the first resource pool, and the second message is used to reserve the Describe the first resource.
  • the non-first type terminal equipment can preempt the resources in the first resource pool to ensure Transmission of higher priority data.
  • terminal devices not of the first type also send preemption messages in the first resource pool, so that terminal devices of the first type can listen to the preemption messages, thereby reducing resource collisions.
  • a second communication method is provided.
  • This method can be executed by a terminal device, or by a larger device including the terminal device, or by a chip system or other functional modules.
  • the chip system or functional modules can realize the communication of the terminal device. function, the chip system or functional module is, for example, set in a terminal device.
  • This terminal is referred to as a first terminal, for example.
  • the method includes: sending M messages, resources reserved by N messages in the M messages are located in a first resource pool, and the frequency domain position of at least one message in the N messages is located in the first resource pool , both M and N are positive integers, and N is less than or equal to M.
  • the message for reserving resources in the first resource pool is sent in the first resource pool, so that the first type of UE can listen to the message, reduce the probability of resource collision, and ensure the reservation mechanism as much as possible. effectiveness.
  • a third communication method is provided, which can be performed by a terminal device, or by a larger device including the terminal device, or by a chip system or other functional modules, and the chip system or functional modules can realize the communication of the terminal device.
  • the chip system or functional module is, for example, set in a terminal device.
  • This terminal is referred to as a first terminal, for example.
  • the method includes: sending a message, the message is used to reserve resources, the frequency domain location of the message is located outside the first resource pool, the resources reserved by the message do not include resources in the first resource pool, and the second resource pool
  • a resource pool is a resource pool used by the first type of terminal equipment. If the message for reserving resources is sent outside the first resource pool, the message cannot reserve resources in the first resource pool, thereby reducing the probability of resource collision.
  • a fourth communication method is provided. This method can be executed by a terminal device, or by a larger device including the terminal device, or by a chip system or other functional modules, and the chip system or functional modules can realize the communication of the terminal device. function, the chip system or functional module is, for example, set in a terminal device. This terminal is referred to as a first terminal, for example.
  • the method includes: receiving a first message from a second terminal device, the first message is used to reserve a first resource, and the first message includes third indication information, and the third indication information is used to indicate the
  • the second terminal device is a terminal device of the first type; increasing the priority indicated by the first message; determining that the priority of the first data is higher than the increased priority, or determining that the increased priority satisfies The first threshold, wherein the first data is the data to be sent by the first resource reserved by the second message; the second message is sent in the first resource pool, and the second message is used to reserve the reserved The first resource, where the first resource pool is a resource pool used by the first type of terminal device.
  • the non-first type terminal equipment can seize the resources in the first resource pool to ensure Transmission of higher priority data. And the non-first-type terminal devices also send preemption messages in the first resource pool, so that the first-type terminal devices can listen to the preemption messages, thereby reducing resource collisions.
  • a fifth communication method is provided.
  • This method can be executed by a terminal device, or by a larger device including the terminal device, or by a chip system or other functional modules, and the chip system or functional modules can realize the communication of the terminal device.
  • the chip system or functional module is, for example, set in a terminal device.
  • This terminal is referred to as a first terminal, for example.
  • the method includes: lowering the priority of the first data; sending a message, the message is used to reserve a resource for the first data, the frequency domain location of the resource is located in the first resource pool, and the first terminal device is the first resource pool
  • the first resource pool is a resource pool used by the first type of terminal equipment.
  • the priority of the data to be sent by the terminal device can be lowered, so as to ensure that the resources in the first resource pool are used by the first type of terminal device as much as possible.
  • the resource utilization rate in the first sub-resource pool is improved.
  • messages for reserving resources are sent in the first resource pool, which can also reduce collisions and ensure the effectiveness of the reservation mechanism.
  • a sixth communication method is provided. This method can be executed by a terminal device, or by a larger device including the terminal device, or by a chip system or other functional modules, and the chip system or functional modules can realize the communication of the terminal device. function, the chip system or functional module is, for example, set in a terminal device. This terminal is referred to as a first terminal, for example.
  • the method includes: sending a first message, the first message is used to reserve a first resource, the frequency domain location of the first resource is located in a first resource pool, the first terminal device is a second type of terminal device,
  • the first resource pool is a resource pool used by terminal devices of the first type; receiving a second message from a second terminal device, the second message is used to reserve a second resource, and the second message includes third indication information , the third indication information is used to indicate that the second terminal device is the first type of terminal device; if there is an intersection between the first resource and the second resource, the Send data on the intersection resource of the second resource, or not send data on the first resource.
  • a communication device is provided.
  • the communication device may be the first terminal device described in any one of the first aspect to the sixth aspect.
  • the communication device has the function of the above-mentioned first terminal device.
  • the communication device is, for example, the first terminal device, or a functional module in the first terminal device, such as a baseband device or a chip system.
  • the communication device includes a baseband device and a radio frequency device.
  • the communication device includes a processing unit (also called a processing module sometimes) and a transceiver unit (also called a transceiver module sometimes).
  • the transceiver unit can realize the sending function and the receiving function.
  • the transceiver unit When the transceiver unit realizes the sending function, it can be called the sending unit (sometimes also called the sending module). When the transceiver unit realizes the receiving function, it can be called the receiving unit (sometimes also called receiving module).
  • the sending unit and the receiving unit can be the same functional module, which is called the transceiver unit, and this functional module can realize the sending function and the receiving function; or, the sending unit and the receiving unit can be different functional modules, and the transceiver unit is for these A general term for functional modules.
  • the communication device further includes a storage unit, and the processing unit is configured to be coupled to the storage unit, and execute programs or instructions in the storage unit to enable the communication device to Execute the function of the first terminal device described in any one of the first aspect to the sixth aspect.
  • a computer-readable storage medium is provided, the computer-readable storage medium is used to store computer programs or instructions, and when executed, the methods performed by the first terminal device in the above aspects are implemented.
  • a computer program product containing instructions, which, when run on a computer, enable the methods described in the above aspects to be implemented.
  • an apparatus comprising one or more units for performing the method described in any embodiment of the present application.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application
  • FIG. 2 is a flow chart of the first communication method provided by the embodiment of the present application.
  • FIG. 3 is a schematic diagram of frequency domain positions of the first sub-resource pool and the sidelink synchronization signal in the embodiment of the present application;
  • FIG. 4 is a schematic diagram of another application scenario according to the embodiment of the present application.
  • FIG. 5 is a flowchart of a second communication method provided by an embodiment of the present application.
  • FIG. 6 is a flowchart of a third communication method provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of resource selection by the UE at the sending end
  • FIG. 8 is a schematic diagram of another application scenario of the embodiment of the present application.
  • FIG. 9 is a flowchart of a fourth communication method provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a message located outside the first sub-resource pool in an embodiment of the present application that cannot reserve resources in the first sub-resource pool;
  • FIG. 11 is a flowchart of a fifth communication method provided by an embodiment of the present application.
  • FIG. 12 is a schematic diagram illustrating that messages located outside the first sub-resource pool cannot preempt resources in the first sub-resource pool in the embodiment of the present application;
  • FIG. 13 is a flowchart of a sixth communication method provided by the embodiment of the present application.
  • FIG. 14 is a flowchart of a seventh communication method provided by the embodiment of the present application.
  • FIG. 15 is a flow chart of the eighth communication method provided by the embodiment of the present application.
  • FIG. 16 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 17 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device is a device with wireless transceiver function, which can be a fixed device, a mobile device, a handheld device (such as a mobile phone), a wearable device, a vehicle-mounted device, or a wireless device built into the above-mentioned devices (such as , communication module, modem, or chip system, etc.).
  • the terminal device is used to connect people, things, machines, etc., and can be widely used in various scenarios, including but not limited to the following scenarios: cellular communication, device-to-device communication
  • D2D vehicle to everything
  • V2X machine-to-machine/machine-type communications
  • M2M/MTC Internet of Things (internet of things) things, IoT), virtual reality (virtual reality, VR), augmented reality (augmented reality, AR), industrial control (industrial control), driverless (self driving), telemedicine (remote medical), smart grid (smart grid) ), smart furniture, smart office, smart wear, smart transportation, smart city (smart city), drones, robots and other scenarios of terminal equipment.
  • the terminal equipment may sometimes be referred to as user equipment (user equipment, UE), terminal, access station, UE station, remote station, wireless communication device, or user device, etc.
  • user equipment user equipment
  • UE user equipment
  • access station UE station
  • remote station wireless communication device
  • wireless communication device or user device, etc.
  • the terminal device is taken as an example for description.
  • the resource pool configured for the UE can support a maximum of 40MHz.
  • the bandwidth supported by the UE is generally above 40 MHz.
  • Some communication scenarios such as UE communication scenarios such as smart watches or smart earphones. Due to the small amount of communication data, there is also a need to reduce costs, so there is a maximum supported bandwidth of 20MHz or 10MHz or less.
  • UE for example, a smart watch or a smart earphone is such a UE.
  • a bandwidth limited (bandwidth limited) UE or a capability limited UE, or a flexible bandwidth (flexible bandwidth) UE.
  • UEs with limited bandwidth may work in different frequency bands (bands), and the bandwidth supported by UEs with limited bandwidth is generally less than or equal to 20 MHz. For example, if a UE with limited bandwidth works in a certain frequency band, the UE generally occupies a lower 10 MHz or lower 20 MHz bandwidth of the frequency band. For example, please refer to Table 1 for examples of some operating bands in the NR system.
  • n1, n2, ... represent different operating frequency bands, each of which includes an uplink frequency band and a downlink frequency band
  • the second column in Table 1 indicates the uplink frequency band
  • the third column indicates the downlink frequency band.
  • the fourth column in Table 1 indicates the duplex mode (duplex mode) applied to the frequency band, for example, each frequency band in Table 1 is applied to frequency division duplexing (frequency division duplexing, FDD) mode.
  • UEs with limited bandwidth generally work in uplink frequency bands, for example, UEs with limited bandwidth may work in one or more uplink frequency bands shown in Table 1.
  • a UE with limited bandwidth works on the uplink frequency band corresponding to n1 shown in Table 1, then the UE may occupy the lower 10 MHz of the uplink frequency band, that is, the frequency band where the UE is located is 1920 MHz to 1930 MHz; or, the UE may occupy The lower 20MHz of the uplink frequency band, that is, the frequency band where the UE is located is 1920MHz ⁇ 1940MHz. It should be noted that there may be multiple working frequency bands, and Table 1 is only an example of some of them.
  • RedCap UE reduced capability UE
  • the reason why it is called RedCap UE is that compared with the existing ordinary NR UE, RedCap UE is that compared with the existing ordinary NR UE, RedCap UE usually only supports lower bandwidth, such as 20MHz, and supports fewer transceiver antennas, such as only supports 1T1R (that is, 1 transmit 1 reception, which can be understood as one transmission antenna and one reception antenna) or 1T2R (that is, 1 transmission and two receptions, which can be understood as one transmission antenna and two reception antennas). Due to the reduced bandwidth supported, the number of supported antennas is also reduced, so the capabilities of such UEs are limited.
  • 1T1R that is, 1 transmit 1 reception, which can be understood as one transmission antenna and one reception antenna
  • 1T2R that is, 1 transmission and two receptions, which can be understood as one transmission antenna and two reception antennas Due to the reduced bandwidth supported, the number of supported antennas is also reduced, so the capabilities of such UEs are limited.
  • RedCap UE can include one or more of the following types of UE: wearable products, video surveillance equipment, smart car-related equipment (such as smart car itself and/or vehicle-mounted devices, etc.) and industrial sensor equipment.
  • the network devices in this embodiment of the present application may include, for example, access network devices and/or core network devices.
  • the access network device is a device with a wireless transceiver function, and is used for communicating with the terminal device.
  • the access network equipment includes, but is not limited to, the base station (BTS, Node B, eNodeB/eNB, or gNodeB/gNB), the transmission reception point (transmission reception point, TRP) and the third generation partnership project (3rd generation partnership project) in the above-mentioned communication system.
  • generation partnership project, 3GPP subsequent evolution of the base station, wireless fidelity (wireless fidelity, Wi-Fi) system in the access node, wireless relay node, wireless backhaul node, etc.
  • the base station may be: a macro base station, a micro base station, a pico base station, a small station, a relay station, and the like. Multiple base stations can support networks of the same access technology or networks of different access technologies.
  • a base station may contain one or more co-sited or non-co-sited transmission and reception points.
  • the access network device may also be a wireless controller, a centralized unit (centralized unit, CU), and/or a distributed unit (distributed unit, DU) in a cloud radio access network (cloud radio access network, CRAN) scenario.
  • the access network device may also be a server or the like.
  • a network device in a vehicle to everything (V2X) technology may be a road side unit (RSU).
  • V2X vehicle to everything
  • RSU road side unit
  • the base station is used as an example for the access network device to be described.
  • the base station can communicate with the terminal equipment, and can also communicate with the terminal equipment through the relay station.
  • a terminal device can communicate with multiple base stations in different access technologies.
  • the core network equipment is used to implement functions such as mobility management, data processing, session management, policy and charging.
  • the names of devices implementing core network functions in systems with different access technologies may be different, which is not limited in this embodiment of the present application.
  • the core network equipment includes: access and mobility management function (access and mobility management function, AMF), session management function (session management function, SMF), policy control function (policy control function, PCF) or User plane function (user plane function, UPF), etc.
  • the communication device for realizing the function of the network device may be a network device, or a device capable of supporting the network device to realize the function, such as a chip system, and the device may be installed in the network device.
  • the technical solution provided by the embodiment of the present application the technical solution provided by the embodiment of the present application is described by taking the network device as an example for realizing the function of the network device.
  • nouns for the number of nouns, unless otherwise specified, it means “singular noun or plural noun", that is, “one or more". “At least one” means one or more, and “plurality” means two or more. "And/or” describes the association relationship of associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist at the same time, and B exists alone, where A, B can be singular or plural. The character “/" generally indicates that the contextual objects are an "or” relationship. For example, A/B means: A or B. “At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items.
  • At least one item (piece) of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c Can be single or multiple.
  • step S201 may occur before step S202, or may occur after step S202, or may occur simultaneously with step S202.
  • the first resource pool can be configured for the first terminal device through the first information.
  • the pool may also be not a sub-resource pool, but an independent resource pool, thereby solving the problem of configuring a resource pool or a sub-resource pool for a terminal device.
  • the first information can configure the reference frequency domain position of the first resource pool, and the first terminal device can determine the frequency domain position of the first resource pool according to the reference frequency domain position and the second information, for example, the first information is provided by the network If sent by the device, since the first information includes less content, transmission overhead can be saved.
  • the technical solution provided by the embodiment of the present application can be applied to the fourth generation mobile communication technology (the 4th generation, 4G) system, such as the long term evolution (long term evolution, LTE) system, or can be applied to the 5G system, such as the new wireless (new radio, NR) system, or may also be applied to a next-generation mobile communication system or other similar communication systems, without specific limitations.
  • the technical solutions provided by the embodiments of the present application can be applied to device-to-device (D2D) scenarios, such as NR-D2D scenarios, etc., or can be applied to vehicle-to-everything (V2X) scenarios, such as NR-V2X scenarios, etc.
  • D2D device-to-device
  • V2X vehicle-to-everything
  • V2X vehicle-to-vehicle
  • V2V vehicle-to-vehicle
  • XR screen projection and other scenarios.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.
  • FIG. 1 includes a network device and a UE, and the network device and the UE can communicate.
  • the network device may send the first information to the UE, so as to configure the resource pool for the UE.
  • the first information may not be sent by the network device, and the UE obtains the first information in other ways, then the network device in FIG. 1 is not a necessary device, and may or may not exist.
  • the UE may be within the coverage of the network device, or may be outside the coverage of the network device.
  • the network device in FIG. 1 is, for example, an access network device, and the access network device is, for example, a base station.
  • the access network equipment corresponds to different equipment in different systems, for example, in the 4G system, it may correspond to eNB, and in the 5G system, it may correspond to the access network equipment in 5G, such as gNB.
  • the technical solutions provided by the embodiments of the present application can also be applied to future mobile communication systems, so the access network equipment in FIG. 1 can also correspond to network equipment in future mobile communication systems.
  • the embodiment of the present application takes the access network device as a base station as an example.
  • the access network device may also be a device such as an RSU.
  • the resources included in the "resource pool” or “sub-resource pool” involved in various embodiments of the present application may be resources used for side communication;
  • the “resources” mentioned in the example may also refer to resources used for side communication.
  • the embodiment of the present application provides a first communication method, please refer to FIG. 2 , which is a flow chart of the method.
  • the method can be applied to the network architecture shown in FIG. 1 , for example, the first UE involved in the method is the UE in FIG. 1 , and the network device involved in the method is the network device in FIG. 1 .
  • the first UE determines first information, where the first information is used to configure a reference frequency domain location of a first resource pool.
  • the reference frequency domain position of the first resource pool includes, for example, one or more items of a start frequency domain position, an end frequency domain position, or an intermediate frequency domain position of the first resource pool.
  • the mixed resource pool which can support different types of UEs to perform transmission in the mixed resource pool.
  • different sub-resource pools can be allocated to different types of UEs in the mixed resource pool, so that UEs can communicate in their respective sub-resource pools, reducing interference between UEs.
  • the first resource pool is located in the hybrid resource pool.
  • the first resource pool is a sub-resource pool allocated to UEs of the first type. If the type of the first UE is the first type, the first UE can use the first resource pool.
  • the first resource pool may also be called a first sub-resource pool.
  • the bandwidth of the hybrid resource pool is 40 MHz, and all types of UEs such as fully aware UEs, partially aware UEs, and RedCap UEs can use the mixed resource pool.
  • the bandwidth of 0-20MHz is configured as a sub-resource pool used by fully aware UEs
  • the bandwidth of 10MHz-30MHz is configured as a sub-resource pool used by partially-aware UEs
  • the bandwidth of 30MHz-40MHz is configured as a sub-resource pool used by RedCap UEs Sub-resource pool.
  • the first resource pool is not a sub-resource pool in the hybrid resource pool, but an independent resource pool.
  • the first resource pool is the first sub-resource pool as an example for introduction, that is to say, the "first sub-resource pool” described later can be replaced with ".
  • the first type is, for example, a bandwidth-limited (or, bandwidth-restricted) type, or other types.
  • a kind of UE with limited bandwidth is RedCap UE.
  • the first information may also include first indication information, or the first indication information may not be included in the first information, but sent through another message.
  • the first indication information indicates the type of UE to which the first sub-resource pool is applicable, that is, indicates what type of UE the first sub-resource pool is applicable to.
  • the first indication information indicates the type of UE to which the reference frequency domain position is applicable, or the first indication information directly indicates the type of UE to which the reference frequency domain position is applicable.
  • the first indication information includes the identifier of the applicable UE type, which is equivalent to indicating the UE type.
  • the first sub-resource pool is configured for use by a first type of UE, and the first type is, for example, a RedCap UE, then the first indication information may indicate that the first sub-resource pool is applicable to the RedCap UE.
  • the UE obtaining the first information can determine whether the UE can use the first sub-resource pool according to the first indication information and the type of the UE.
  • the first indication information may also indicate the bandwidth of the UE to which the first sub-resource pool is applicable, that is, indicate which bandwidth the first sub-resource pool is applicable to the UE supporting.
  • the first indication information indicates that the first sub-resource pool is applicable to UEs supporting 10 MHz bandwidth, or indicates that the first sub-resource pool is applicable to UEs supporting 20 MHz bandwidth, and so on.
  • the UE obtaining the first information can determine whether the UE can use the first sub-resource pool according to the first indication information and the bandwidth of the UE.
  • the first information is sent by the network device, and the way for the first UE to determine the first information is, for example, that the network device sends the first information to the first UE, and correspondingly, the first UE receives the first information from the network device, so that the first The UE determines the first information.
  • the first information may also be preconfigured in the first UE, and then the first UE may obtain the preconfigured first information.
  • the first information may also be predefined through a protocol, etc., and the first UE may determine the first information according to the protocol.
  • the sidelink synchronization signal is sent by the UE, and the location of the sidelink synchronization signal in the frequency domain is relatively fixed. All types of UEs need to monitor the sidelink synchronization signal, otherwise they may not be able to synchronize to the synchronization source with the highest priority. If the sub-resource pool allocated to the UE does not include the frequency domain location of the sidelink synchronization signal, the UE also needs to switch to the frequency domain location where the sidelink synchronization signal is located to monitor the sidelink synchronization signal, which is more complicated for the UE to implement, and High power consumption.
  • the embodiment of the present application proposes that the frequency domain range of the first sub-resource pool allocated to the first UE may include the frequency domain range of the sidelink synchronization signal (or in other words, include the frequency domain position of the sidelink synchronization signal), so The UE does not need to switch the working frequency, which simplifies the working process of the UE and can reduce power consumption.
  • the sidelink synchronization signal occupies 132 subcarriers in the frequency domain (for example, the sidelink synchronization signal is a sidelink synchronization signal block (S-SSB), and the sidelink absolute frequency SSB version 16 (sl-AbsoluteFrequencySSB-r16 )
  • This parameter can indicate the intermediate subcarrier occupied by S-SSB, for example, indicate the 66th subcarrier occupied by S-SSB, then the 132 subcarriers occupied by S-SSB can be determined according to this parameter), that is to say, the side
  • the frequency domain range of the horizontal synchronization signal includes the 132 subcarriers, and the frequency domain range of the first sub-resource pool may include the 132 subcarriers.
  • FIG. 3 is a schematic diagram of the first sub-resource pool and the frequency domain position of the sidelink synchronization signal.
  • the dashed box in FIG. 3 represents the frequency domain position of the sidelink synchronization signal.
  • the first sub-resource pool is included in the mixed resource pool, and the frequency domain position of the sidelink synchronization signal is within the frequency domain range of the first sub-resource pool.
  • the frequency domain position of the sidelink synchronization signal may be considered when designing the reference frequency domain position.
  • all or part of the frequency domain positions included in the reference frequency domain position are frequency domain positions of the subchannel where the sidelink synchronization signal is located.
  • the sidelink synchronization signal may occupy one or more subchannels. If the sidelink synchronization signal occupies one subchannel, the reference frequency domain position may include the frequency domain position of the subchannel.
  • the reference frequency domain position may be the frequency domain position of the subchannel with the lowest frequency among the multiple subchannels, or this The frequency domain position of the subchannel with the highest frequency among the plurality of subchannels, or the frequency domain position of the subchannel whose frequency is in the middle among the plurality of subchannels, or the frequency domain position of any subchannel among the plurality of subchannels;
  • the reference frequency domain position may include these multiple frequency domain positions.
  • the reference frequency domain position includes the start frequency domain position and the end frequency domain position of the first subresource pool, wherein the start frequency domain position of the first subresource pool is the frequency domain position of the subchannel with the lowest frequency among the plurality of subchannels, and the end frequency domain position of the first subresource pool is not the frequency domain position of the subchannel where the sidelink synchronization signal is located, but other frequency domain positions, or,
  • the end frequency domain position of the first subresource pool is the frequency domain position of the subchannel with the highest frequency among the plurality of subchannels.
  • the first information indicates the reference frequency domain position, and one indication method is that the first information may indicate (or include) the reference frequency domain position
  • the sub-channel label of the sub-channel, the corresponding sub-channel can be indicated by the sub-channel label. For example, if the reference frequency domain position includes the frequency domain position of the lowest frequency subchannel among the multiple subchannels occupied by the sidelink synchronization signal, then the first information may indicate (or include) the subchannel label of the lowest frequency subchannel.
  • the frequency domain positions included in the reference frequency domain position are the frequency domain positions of the first subcarrier where the sidelink synchronization signal is located.
  • the first subcarrier is, for example, The subcarrier with the lowest frequency among the subcarriers occupied by the sideline synchronization signal, or the subcarrier with the highest frequency among the subcarriers occupied by the sideline synchronization signal, or the subcarrier with the middle frequency among the subcarriers occupied by the sideline synchronization signal (For example, the side synchronization signal occupies a total of 132 subcarriers, and the first subcarrier may refer to the 66th subcarrier or the 67th subcarrier), or it may be any one of the subcarriers occupied by the side synchronization signal carrier.
  • the sideline synchronization signal is, for example, S-SSB, or may be other signals used for sideline synchronization.
  • the first information also includes other information for configuring the first sub-resource pool.
  • the first information also includes the number of subchannels occupied by the first subresource pool, so that the first UE can determine the number of subchannels occupied by the first subresource pool according to the reference frequency domain position and the number of subchannels occupied by the first subresource pool. frequency domain location.
  • the content included in the first information is relatively complete, and the first UE can determine the frequency domain position of the first sub-resource pool according to the first information without considering other information.
  • the first information only includes the reference frequency domain position and does not include other information.
  • the first UE may determine the frequency domain position of the first sub-resource pool in combination with the first information and other information.
  • Such first information includes less content, and if the first information is sent by a network device, transmission overhead can be saved.
  • the first UE determines the frequency domain range of the first sub-resource pool according to the reference frequency domain position and the second information.
  • the second information may include or indicate one or more of the following: the bandwidth supported by the first UE, the bandwidth of one subchannel, or the number of subchannels occupied by the first subresource pool.
  • the way of determining the second information is, for example: way 1, being included in the first information; way 2, being pre-configured in the first UE; way 3, being predefined through a protocol.
  • these items can be determined in the same manner, for example, these items are all included in the first information, or these items are all preconfigured in the first UE, or these items Both are predefined by the protocol.
  • the second information includes multiple items, the multiple items can be determined in various ways.
  • the second information includes the bandwidth supported by the first UE, the bandwidth of a sub-channel, and the number of sub-channels occupied by the first sub-resource pool, any two of these three items can be determined through method 1, and the remaining one It can be determined through method 2.
  • the second information includes the bandwidth supported by the first UE, the bandwidth of a subchannel, and the number of subchannels occupied by the first subresource pool.
  • Different items in these three items are determined in different ways, for example, the three The first of these three terms can be determined by way 3, the second of these three terms can be determined by way 1, and the third of these three terms can be determined by way 2.
  • the second information includes a first quantity
  • the first quantity is the number of subchannels occupied by the first subresource pool.
  • the reference frequency domain position is, for example, the start frequency domain position of the first subresource pool, then the first UE determines from the start frequency domain position to the end frequency domain position of the first number of subchannels, and the range between them is the first The frequency domain range of a sub-resource pool.
  • the second information includes the bandwidth supported by the first UE and the size of a subchannel.
  • the reference frequency domain position is, for example, the starting frequency domain position of the first subresource pool, then the first UE can determine the number of subchannels that can be occupied by the first subresource pool according to the bandwidth supported by the first UE and the size of a subchannel
  • the size of the first sub-resource pool is determined according to the reference frequency domain position and the number of sub-channels occupied by the first sub-resource pool.
  • the subcarrier spacing is 15kHz
  • the size of a subchannel is 10 resource blocks (resource block, RB), that is, 1.8MHz
  • the bandwidth supported by the first UE is 20MHz
  • the first UE determines the subchannel occupied by the first subresource pool.
  • the total bandwidth of the channel needs to be less than or equal to 20MHz.
  • the total bandwidth of 11 subchannels is 19.8MHz
  • the total bandwidth of 12 subchannels is 21.6MHz.
  • the first subresource pool occupies up to 11 subchannels. Therefore, the first UE determines that the first sub-resource pool occupies 11 sub-channels.
  • the reference frequency domain position is, for example, the starting frequency domain position of the first subresource pool, and the starting frequency domain position is indicated by, for example, a subchannel label, then the first UE determines 11 subchannels starting from the subchannel indicated by the subchannel label is the frequency domain range of the first sub-resource pool. It should be noted that since the value obtained by dividing the bandwidth supported by the first UE by the size of a subchannel is not necessarily an integer, the subchannels occupied by the first subresource pool may not be able to occupy all the subchannels supported by the first UE.
  • the bandwidth, that is, the frequency domain range of the first sub-resource pool may be part of the bandwidth supported by the first UE.
  • the frequency domain ranges of the first sub-resource pools are also different.
  • the first UE determines the number of subchannels occupied by the first subresource pool, and the reference frequency domain position is the starting frequency domain position of the first subresource pool, then the reference frequency domain position may be the frequency in the first subresource pool The lowest frequency domain position, starting from the reference frequency domain position, the first UE determines the frequency domain range of the first sub-resource pool in the high-frequency direction according to the number of sub-channels occupied by the first sub-resource pool.
  • the reference frequency domain position is the end frequency domain position of the first subresource pool
  • the reference frequency domain position may be the frequency domain position with the highest frequency in the first subresource pool
  • the first UE starts from the reference frequency domain position according to The number of sub-channels occupied by the first sub-resource pool determines the frequency domain range of the first sub-resource pool toward the low frequency direction.
  • the reference frequency domain position is an intermediate frequency domain position of the first sub-resource pool, and the first UE starts from the reference frequency domain position and moves toward the high-frequency direction and the low-frequency direction respectively according to the number of sub-channels occupied by the first sub-resource pool Determine the frequency domain range of the first sub-resource pool.
  • the bandwidth of the first sub-resource pool is greater than the bandwidth supported by the first UE, the first UE cannot use the resources whose bandwidth in the first sub-resource pool exceeds the bandwidth supported by the first UE, for example, the first UE cannot Listening on, and sending data on, these resources is also not possible. Therefore, in order to enable the first UE to support the first sub-resource pool, optionally, the bandwidth of the first sub-resource pool may be less than or equal to the bandwidth of the first UE, so that the first UE can use the resources included in the first sub-resource pool to transmit data.
  • the first UE After determining the frequency domain range of the first sub-resource pool, the first UE can select resources in the first sub-resource pool to communicate with other UEs.
  • the first resource pool can be configured for the first terminal device through the first information.
  • the pool may also be not a sub-resource pool, but an independent resource pool, thereby solving the problem of configuring a resource pool or a sub-resource pool for a terminal device.
  • the first information can configure the reference frequency domain position of the first resource pool, and the first terminal device can determine the frequency domain position of the first resource pool according to the reference frequency domain position and the second information, for example, the first information is provided by the network If sent by the device, since the first information includes less content, transmission overhead can be saved.
  • mode 1 is the mechanism for the base station to allocate resources
  • mode 2 is the mechanism for UE to select resources on its own.
  • the sending UE before sending a message to the receiving UE (Rx UE), the sending UE (Tx UE) needs to apply for resources from the network device, and the network device allocates resources to the Tx UE, and the Tx UE sends the resource to the Tx UE through the allocated resources.
  • Rx UE sends a message.
  • one of the UEs may have a lower capability, or both UEs may have lower capabilities.
  • the network device may not know the capabilities of the UE when allocating resources. If at least one of the two UEs has a low capability, and the network device allocates resources that cannot be supported by the UE with low capabilities (for example, the resources allocated by the base station are located in (outside the sub-resource pool supported by UEs with lower capabilities), it may cause communication failure between the two UEs.
  • the embodiment of the present application provides a second communication method, through which the network device can allocate appropriate resources for the UE.
  • FIG. 4 is a schematic diagram of an application scenario of an embodiment of the present application.
  • Figure 4 includes a network device, a sending-end UE, and a receiving-end UE.
  • the network device and the sending-end UE can communicate, and the sending-end UE can request resources from the network device, thereby allocating resources for the sending-end UE.
  • the network device and the receiving UE can also communicate, that is, the receiving UE may be within the coverage of the network device, or the network device and the receiving UE may not be able to communicate, that is, the receiving UE is outside the coverage of the network device.
  • the network device in FIG. 4 is, for example, an access network device. For the introduction of the access network device, reference may be made to the foregoing.
  • FIG. 5 is a flowchart of the method.
  • the embodiment shown in FIG. 5 can be applied to the scenario shown in FIG. 4.
  • the second UE is the receiving end UE in FIG. 4 .
  • the first UE sends a first request message to a network device.
  • the network device receives the first request message from the first UE.
  • the first request message may be used to request resources, and the resources are used for the first UE to send data to the second UE. That is, before the first UE sends data to the second UE, it needs to request resources from the network device first, so the first UE may send the first request message to the network device.
  • the first request message is, for example, a buffer status report (buffer status report, BSR), or may be other messages for requesting resources.
  • the first request message may also include second indication information. It can be understood that the first request message includes two fields, one of the two fields carries information for requesting resources, and the other of the two fields carries the second indication information. Alternatively, the information for requesting resources and the second indication information may also be carried in a field included in the first request message. Alternatively, the first request message may not include information for requesting resources, as long as sending the first request message indicates that it is for requesting resources, the first request message will include the second indication information. Alternatively, request messages for requesting different resources are carried by different resources. For example, the network device pre-configures different resources for different resource pools.
  • the request message for requesting RedCap resources and the request message for requesting non-RedCap resources will be carried on different resources. It can be determined what type of resource the request message is for requesting. For example, the first request message is carried on resource A, and resource A is configured for a request message for requesting RedCap resources, so that the network device can determine according to resource A that what the first request message requests is RedCap resources. If this is the case, the resource bearing the request message can be regarded as the second indication information, so it cannot be considered that the first request message includes the second indication information, but that the first request message corresponds to the second indication information.
  • the RedCap resource refers to the resource in the resource pool used by the RedCap UE
  • the non-RedCap resource refers to the resource in the resource pool used by the non-RedCap UE.
  • the second indication information indicates the capability of the first UE and/or the capability of the second UE.
  • the second indication information indicates the capability of a UE, for example, by indicating the type of the UE.
  • the second indication information indicates that the first UE and/or the second UE are UEs of the first type, and the UE of the first type is the RedCap UE hereinafter as an example.
  • the first UE knows whether the first UE is a RedCap UE. In addition, the first UE can also determine in advance whether the second UE is a RedCap UE.
  • the capability information of the second UE may obtain the capability information of the second UE during communication with the second UE, for example, the first UE may obtain the second UE's capability information when establishing a sidelink connection with the second UE Capability information, or the first UE can also obtain the capability information of the second UE after the sidelink connection with the second UE is successfully established, so that the first UE can determine whether the second UE is a RedCap UE, or the first UE can also pass Obtain the capability information of the second UE in other manners.
  • the first request message may not include the second indication information, and the network device can determine the first request message according to the first request message does not include the second indication information.
  • Both the UE and the second UE are non-RedCap UEs; or, the first request message may continue to include the second indication information, and the second indication information may indicate that both the first UE and the second UE are non-RedCap UEs, and the network device according to the second indication The information may determine that both the first UE and the second UE are non-RedCap UEs.
  • the second indication information may indicate the capability of a UE by indicating the frequency band of the UE.
  • the second indication information indicates the frequency band supported by the first UE and/or the second UE.
  • the second indication information may indicate the frequency band supported by the first UE, but not indicate the frequency band supported by the second UE, so as to reduce the second indication information overhead; or the second indication information may also indicate the frequency band supported by the first UE and the frequency band supported by the second UE, which makes the content indicated by the first UE more comprehensive.
  • the indication method is similar, for example, the second indication information indicates the frequency band supported by the second UE, but does not indicate the frequency band supported by the first UE, or the first UE
  • the two indication information may also indicate the frequency band supported by the first UE and the frequency band supported by the second UE. If the first UE determines that both the second UE and the first UE are RedCap UEs, the second indication information may also indicate the frequency band supported by the first UE and the frequency band supported by the second UE.
  • the second indication information indicates a frequency band supported by a UE.
  • the second indication information indicates the start frequency domain position and bandwidth of the frequency band, or indicates the end frequency domain position and bandwidth of the frequency band, or indicates the frequency band
  • the start frequency domain position and the end frequency domain position of , or other indication methods can also be used.
  • the manner in which the first UE determines the frequency band supported by the second UE reference may be made to the foregoing manner in which the first UE determines the capability information of the second UE.
  • the first request message may not include the second indication information, and the network device can determine the first request message according to the first request message does not include the second indication information.
  • Both the UE and the second UE are non-RedCap UEs; or the first request message may continue to include the second indication information, and the second indication information continues to indicate the frequency bands supported by the first UE and/or the second UE, and the network device according to the second indication information It can be determined that both the first UE and the second UE are non-RedCap UEs.
  • the second indication information may indicate the capability of a UE by indicating the bandwidth supported by the UE.
  • the second indication information indicates the bandwidth supported by the first UE and/or the second UE.
  • the second indication information may indicate the bandwidth supported by the second UE, but not indicate the bandwidth supported by the second UE, so as to reduce the second indication Information overhead; or the second indication information may also indicate the bandwidth supported by the first UE and the bandwidth supported by the second UE, which makes the content indicated by the second UE more comprehensive.
  • the indication method is similar, for example, the second indication information indicates the bandwidth supported by the second UE, but does not indicate the bandwidth supported by the first UE, or the second indication information indicates the bandwidth supported by the first UE, or The two indication information may also indicate the bandwidth supported by the first UE and the bandwidth supported by the second UE. If the first UE determines that both the second UE and the first UE are RedCap UEs, the second indication information may also indicate the bandwidth supported by the first UE and the bandwidth supported by the second UE.
  • the first request message may not include the second indication information, and the network device can determine the first request message according to the first request message does not include the second indication information.
  • Both the UE and the second UE are non-RedCap UEs; or the first request message may continue to include second indication information, and the second indication information continues to indicate the bandwidth supported by the first UE and/or the second UE, and the network device according to the second indication information It can be determined that both the first UE and the second UE are non-RedCap UEs.
  • the second indication information can indicate the frequency band supported by the first UE and the bandwidth supported by the second UE, that is, the second indication information can use the same type of information for the first UE and the second UE. Instructions can also use different instructions.
  • the first UE may also send a scheduling request (scheduling request, SR) to the network device.
  • SR scheduling request
  • the network device allocates different SR channels for different types of UEs, and the SR channel sent by the first UE corresponds to the capability of the second UE.
  • different SR channels correspond to different types of UEs, and the SR channel sent by the first UE corresponds to the type of the second UE, or is used to indicate the type of the second UE, so that the network device uses the SR channel from the first UE to
  • the type of the second UE can be determined, for example, it can be determined that the second UE is a RedCap UE or other types.
  • different SR channels correspond to different sub-resource pools
  • the SR channel sent by the first UE corresponds to the sub-resource pool where the resource requested by the first UE is located, or is used to indicate the sub-resource pool where the resource requested by the first UE is located.
  • the sub-resource pool so that the network device can determine the sub-resource pool where the resource requested by the first UE is located according to the SR channel from the first UE. For example, the network device determines that the first UE requests a RedCap UE according to the SR channel from the first UE Resources in the sub-resource pool used.
  • the network device sends a first response message to the first UE.
  • the first UE receives the first response message from the network device.
  • the first response message indicates the first resource.
  • the network device may allocate resources for the first UE.
  • the second indication information may indicate the capability of the first UE and/or the capability of the second UE.
  • the network device can consider the capabilities of the first UE and/or the second UE when allocating resources for the first UE, so as to allocate resources that both the first UE and the second UE can support for the first UE.
  • the frequency domain position of the first resource is located in the frequency band supported by the first UE, and is also located in the frequency band supported by the second UE.
  • the first resource allocated by the network device to the first UE may be located within the frequency range supported by the RedCap UE (for example, the allocated resources are located in sub-resource pool), and the allocated bandwidth of the first resource is also the bandwidth supported by the RedCap UE, so that the first UE and the second UE can communicate normally. It can be seen that, through the second indication information, the network device can know the capabilities of the UEs of both communication parties, so that the network device can allocate appropriate resources for the UEs, and improve the success rate of communication between UEs.
  • requesting resources from the network device may also be performed by the second UE (that is, the receiving end UE).
  • the first UE may indicate to the second UE in advance, and the second UE may send a first request message to the network device to request resource allocation after learning that the data is about to be received. If this is the case, the network device may send a first response message to the second UE. That is, S501 and S502 may also be performed by the second UE.
  • the embodiment of this application provides a third communication method, which is also applicable to mode 1.
  • the network device can also allocate appropriate resources for the UE.
  • FIG. 6 is a flowchart of the method.
  • the embodiment shown in FIG. 6 can also be applied to the scenario shown in FIG. 4.
  • the second UE is the receiving end UE in FIG. 4 .
  • the second UE sends capability information of the second UE to a network device.
  • the network device receives capability information from the second UE.
  • the capability information of the second UE may indicate the capability of the second UE.
  • the second UE may send the capability information of the second UE to the network device after the random access succeeds, or may also send the capability information of the second UE to the network device during communication with the network device.
  • the capability information of the second UE may also be updated, and the second UE may also send the updated capability information to the network device.
  • the capability information of the second UE indicates, for example, one or more of the following: the type of the second UE, the bandwidth supported by the second UE, or the frequency band supported by the second UE.
  • the second UE sends the capability information to the network device, it may also send the identity of the second UE together.
  • the identity of the second UE is related to, or may not be related to, the service of the second UE, for example.
  • the identity of the second UE may be generated by the second UE, such as randomly generated, or generated in other ways; or, the identity of the second UE may also be generated by the network device (such as randomly generated, or generated in other ways) and assigned to Second UE's.
  • the network device may store the identifier of the second UE and the capability information of the second UE, for example, the network device stores a correspondence between the identifier of the second UE and the capability information of the second UE.
  • the first UE sends capability information of the first UE to a network device.
  • the network device receives capability information from the first UE.
  • the capability information of the first UE may indicate the capability of the first UE.
  • S601 may occur before S602, or S601 may occur after S602, or S601 and S602 may also occur simultaneously.
  • S602 refer to the introduction of S601, and the implementation method is similar.
  • the first UE sends third information to the network device.
  • the network device receives third information from the first UE.
  • the third information may include information of at least one UE that may communicate with the first UE, or in other words, information of at least one receiving UE of the first UE, where the at least one receiving UE includes, for example, the second UE.
  • the vehicle can predict that a receiving UE that may communicate with the vehicle, such as a roadside device or other vehicles, may be the receiving UE of the vehicle.
  • the third information may also be updated.
  • the first UE is a vehicle. When the vehicle is in a driving state, the receiving UE communicating with the vehicle may change.
  • the vehicle is initially located on the first road segment, and the receiving UE communicating with the vehicle may be on the first road segment. It includes the vehicle 1 near the vehicle, and also includes the smart street lamp as a roadside device.
  • the third information may include the information of the vehicle 1 and the smart street lamp.
  • the vehicle travels to the second road segment.
  • the receiving UE that may communicate with the vehicle changes to a camera as a roadside device.
  • the previous vehicle 1 and the smart street lamp no longer communicate with the vehicle.
  • the third information may be updated.
  • the updated third information includes the information of the camera, and no longer includes the information of the vehicle 1 and the information of the smart street lamp. If the third information is updated, the first UE can also use the third information After updating, the updated third information is sent to the network device, so that the network device can obtain the latest third information in time.
  • the information of a receiving UE includes, for example, an identifier of the receiving UE and an index corresponding to the identifier. That is, in the third information, one identifier corresponds to one index, or in other words, there is a one-to-one correspondence between identifiers and indexes.
  • the index included in the third information may be set by the first UE.
  • the first UE determines that at least one receiving UE may communicate with the first UE, and the first UE adds the identity of at least one receiving UE to the third information, that is, The first UE adds at least one identifier to the third information, and in addition, the first UE may set an index for the at least one identifier respectively, so as to distinguish different identifiers.
  • the index of at least one identification is, for example, 0, 1, 2, . . . and so on.
  • the information of the second UE may include an identifier of the second UE and an index corresponding to the identifier of the second UE.
  • the third information is presented, for example, in the form of a list, or may also be presented in other forms.
  • the network device may store the third information.
  • the network device stores the content included in the third information in the form of a list, and the list includes at least one identifier of the receiving UE and indexes corresponding to these identifiers.
  • the identifier of the UE is, for example, an ID of layer (layer, L)-1 or an ID of L-2 of the UE, and the identifier of the UE may be used to determine the UE.
  • the UE's physical layer can obtain the UE's identifier from the UE's upper layer, such as the application layer (application layer) or MAC layer, for example, the UE's application layer can determine the UE's identifier, The application layer may transfer the determined identifier to the MAC layer of the UE, and the MAC layer then transfers the identifier to the physical layer of the UE.
  • the identity of the UE may also be independently determined by the UE.
  • the identity of the UE may also be configured by the network device. If the identity of the UE is not configured by the network device, the network device may obtain the identity of the UE in advance (for example, in S601, the second UE sends the identity of the second UE and the capability information of the second UE to the network device, and the network device The identity of the second UE is obtained), so that the network device can correspond the index in the third information with the capability information of the UE stored in the network device.
  • the information of a receiving UE includes, for example, capability information of the receiving UE and an index corresponding to the capability information. That is, in the third information, one piece of capability information (or a piece of capability information) corresponds to one index, or in other words, there is a one-to-one correspondence between capability information and indexes.
  • the index included in the third information may be set by the first UE.
  • the first UE determines that at least one receiving UE may communicate with the first UE, and the first UE adds the capability information of at least one receiving UE to the third information, that is, , the first UE adds at least one piece of capability information to the third information, and the first UE may also set an index for the at least one piece of capability information respectively, so as to distinguish different pieces of capability information.
  • the information of the second UE may include capability information of the second UE and an index corresponding to the capability information of the second UE. If this method is adopted, S601 may not be executed, and the network device can obtain the capability information of the second UE through the third information, which is beneficial to save storage space of the network device.
  • the first UE needs to obtain the capability information of the second UE.
  • the first UE may obtain the capability information of the second UE from a high layer of the first UE (such as the MAC layer or the application layer, etc.), or the first UE may obtain the capability information of the second UE during communication with the second UE.
  • Information for example, the first UE can acquire the capability information of the second UE when establishing a sidelink connection with the second UE, or the first UE can also acquire the capability information of the second UE after the sidelink connection with the second UE is successfully established .
  • the third information is presented, for example, in the form of a list, or may also be presented in other forms.
  • the first UE sends a first request message to the network device.
  • the network device receives the first request message from the first UE.
  • the first request message may be used to request resources, where the resources are used by the first UE to send data to the second UE, or in other words, the resources are resources used for sidelink transmission. That is, before the first UE sends data to the second UE, it needs to request resources from the network device first, so the first UE may send the first request message to the network device.
  • the first request message is, for example, a BSR, or may also be other messages for requesting resources.
  • the first request message may also include second indication information. It can be understood that the first request message includes two fields, one of the two fields carries information for requesting resources, and the other of the two fields carries the second indication information. Alternatively, the information for requesting resources and the second indication information may also be carried in a field included in the first request message. Alternatively, the first request message may not include information for requesting resources, and only sending the first request message indicates that it is used for requesting resources.
  • the second indication information includes, for example, an identifier of the second UE, or includes an index of the second UE.
  • the information of the receiving UE included in the second information includes the identifier of the receiving UE and the corresponding index, then the second indication information may include the identifier of the second UE, or include the index of the second UE.
  • the network device Since the network device has stored the correspondence between the capability information of the second UE and the identity of the second UE, if the second indication information includes the identity of the second UE, the network device can determine the capability information of the second UE according to the identity of the second UE ; If the second indication information includes the index of the second UE, the network device can determine the identity of the second UE from the third information according to the index of the second UE, and then determine the capability information of the second UE according to the identity of the second UE. In this indication manner, the first UE does not need to determine the capability of the second UE, the second indication information may directly include the identity of the second UE, and the network device determines the capability of the second UE.
  • the information of the receiving UE included in the second information includes capability information of the receiving UE and a corresponding index
  • the second indication information may include the index of the second UE.
  • the network device does not need to store the capability information of the second UE in advance, but can determine the capability information of the second UE from the third information according to the index of the second UE.
  • the first UE sends a first request message to the network device through a scheduling request (scheduling request, SR) channel, for example, the network device allocates different SR channels for different UEs, so the network device can determine the first UE according to the SR channel, Therefore, it can be determined whether the corresponding relationship between the identity of the first UE and the capability information of the first UE has been stored. If it has been stored, the network device can determine the capability information of the first UE, thereby determining whether the first UE is the first UE.
  • SR scheduling request
  • the network device sends a first response message to the first UE.
  • the first UE receives the first response message from the network device.
  • the first response message indicates the first resource.
  • the network device may allocate resources for the first UE.
  • the network device can consider the capabilities of the first UE and/or the second UE when allocating resources for the first UE, so as to allocate resources that both the first UE and the second UE can support for the second UE.
  • the frequency of the first resource is located in the frequency band supported by the second UE, and is also located in the frequency band supported by the second UE.
  • the first resource allocated by the network device to the first UE may be located within the frequency range supported by the RedCap UE (for example, the allocated resources are located in sub-resource pool), and the allocated bandwidth of the first resource is also the bandwidth supported by the RedCap UE, so that the first UE and the second UE can communicate normally. It can be seen that, through the second indication information, the network device can know the capabilities of the UEs of both communication parties, so that the network device can allocate appropriate resources for the UEs, and improve the success rate of communication between UEs.
  • requesting resources from the network device may also be performed by the second UE (that is, the receiving end UE).
  • the first UE may indicate to the second UE in advance, and the second UE may send a first request message to the network device to request resource allocation after learning that the data is about to be received. If this is the case, the network device may send a first response message to the second UE, that is, S604 and S605 may be performed by the second UE.
  • S601-S603 are optional steps.
  • the embodiment shown in FIG. 5 and the embodiment shown in FIG. 6 may be applied independently, or may also be applied in combination.
  • mode 1 is the mechanism for the base station to allocate resources
  • mode 2 is the mechanism for the UE to self-select resources.
  • the embodiment shown in FIG. 5 and the embodiment shown in FIG. 6 both introduce solutions related to mode 1, and then introduce solutions related to mode 2.
  • sensing behavior is introduced on the UE side of the sending end.
  • the UE at the sending end can sense channel occupancy and resource reservations at some time in the future, so as to identify whether these resources are occupied.
  • the time interval between periodic resources is the period, and the period can be an integral multiple of 100ms, or a discrete value such as 1-99ms.
  • the resource reservation value of the aperiodic service is generally within 32 time slots.
  • FIG. 7 is a schematic diagram of resource selection for a UE (for example, a UE at a transmitting end).
  • the UE can sense all time slots within the resource sensing window (sensing window) shown in Figure 7.
  • the sensing method is, for example, monitoring sidelink control information (sidelink control information, SCI) to determine channel occupancy and future time slots. Resource reservation status.
  • SCI sidelink control information
  • the UE at the sending end can select available resources in a resource selection window (selection window). For example, in the resource selection window, according to the strength of the reserved signal, the UE at the sending end selects a resource that is not reserved or reserved but has a weaker signal strength for transmission.
  • the gap (gap) in Figure 7 represents the reservation situation of periodic resources, that is, the resources within the selection window indicated by "gap" are unavailable and need to be excluded when selecting resources; w represents the reservation situation of non-periodic resources , that is, the resources within the selection window indicated by w are also unavailable, and need to be excluded when selecting resources.
  • different types of UEs can be assigned their own sub-resource pools in the mixed resource pool.
  • the bandwidth of the sub-resource pool allocated to such UEs may be small, and such UEs generally can only communicate within their own sub-resource pools.
  • this type of UE has no ability to perceive, for example, this type of UE has no ability to listen to messages sent on resources outside the sub-resource pool of this type of UE.
  • the sub-resource pools of these UEs may include sub-resource pools of other types of UEs, Or there is an intersection with sub-resource pools of other types of UEs, so that such UEs can perform resource selection in a wider range, thereby improving the utilization rate of the mixed resource pool.
  • the bandwidth-limited UE since the bandwidth-limited UE can perceive the limited frequency band, if the non-bandwidth-limited UE sends SCI outside the frequency band that the bandwidth-limited UE can perceive, the SCI is used to reserve sub-resources with lower capabilities resources in the pool, and UEs with limited bandwidth cannot monitor the SCI. At this time, the reservation mechanism fails, which may lead to resource collisions.
  • a fourth communication method is provided. Through this method, the probability of resource collision can be reduced, and the effectiveness of the reservation mechanism can be ensured as much as possible.
  • FIG. 8 shows the applicable scenario of this method.
  • Figure 8 includes UE1 and UE2.
  • the first UE described below is UE1 in FIG. 8
  • the second UE is UE2 in FIG. 8 .
  • FIG. 9 is a flowchart of the method.
  • the first UE sends M messages.
  • M is a positive integer.
  • each of the M messages is used to reserve resources, and the resources are used for sending data by the first UE.
  • the data may be sent to the second UE, and may also be sent to other UEs.
  • the resources reserved by the M messages can be used to send one transport block (transport block, TB), or can also be used to send multiple transport blocks.
  • the first UE is, for example, a UE of the second type, and the sub-resource pool used by the first UE in the hybrid resource pool is, for example, called a second sub-resource pool.
  • the second UE is, for example, a UE of the first type, and the sub-resource pool used by the second UE in the hybrid resource pool is, for example, called a first sub-resource pool.
  • the first type is, for example, a bandwidth-limited type, such as RedCap;
  • the second type is, for example, a non-bandwidth-limited type, such as a partial sensing type, a full sensing type, or a random resource selection type.
  • the second UE is not a UE of the first type, but a UE of a non-first type, for example, the second UE is also a UE of the second type. If the second UE is not the first type of UE, then the second UE may be capable of sensing the message for reserving resources on a larger frequency band, or in other words, the second UE may be capable of monitoring the PSCCH on a larger frequency band. However, it may be necessary to limit the capabilities of the second UE within a certain period of time, or it may be necessary to limit the capabilities of the second UE in certain scenarios. Other resources outside the second sub-resource pool.
  • the second UE is restricted to work on a narrow bandwidth in some time periods, that is, the second UE is restricted to only monitor the second sub-resource pool and cannot monitor the second sub-resource pool other resources.
  • the technical solutions of the embodiments of the present application may also be applied to the second UE with limited capabilities.
  • the second UE is the UE of the first type as an example.
  • the second sub-resource pool includes the first sub-resource pool, or, for example, the second sub-resource pool overlaps with the first sub-resource pool.
  • the first UE sends M messages in the second sub-resource pool, and some or all of the resources reserved by the M messages may be located in the first sub-resource pool.
  • N is a positive integer
  • N is less than or equal to M. If the M messages are not sent in the first sub-resource pool, the second UE cannot monitor the M messages, and cannot know the resource reservation status of the first UE for the first sub-resource pool.
  • first sub-resource pool described in each embodiment of this application can be replaced with “first resource pool”; similarly, the “sub-resource pool” described in each embodiment of this application “Second sub-resource pool” can also be replaced with “second resource pool”.
  • the embodiment of the present application proposes that the N messages may all be located in the first sub-resource pool, or in other words, the frequency domain positions of the N messages are all located in the first sub-resource pool.
  • the method further includes S902: the second UE receives N messages from the first UE.
  • messages outside the first sub-resource pool cannot reserve resources in the first sub-resource pool. For example, if the first UE sends a message outside the first sub-resource pool, the message is not used to reserve the first sub-resource pool. Resources in the sub-resource pool. For example, referring to FIG. 10, message 1 is located in the first sub-resource pool, and message 2 is located outside the first sub-resource pool.
  • message 1 can reserve resources in the first sub-resource pool (for example, in FIG. 10, message 1 has reserved resources in the first sub-resource pool). resources in the sub-resource pool and resources outside the first sub-resource pool), while message 2 cannot reserve resources in the first sub-resource pool, or in other words, resources reserved in message 2 cannot include resources in the first sub-resource pool.
  • the second UE can listen to N messages, thereby being able to know the reservation status of other UEs for resources in the first sub-resource pool, reducing the probability of resource collision and ensuring the effectiveness of the reservation mechanism.
  • the conditions can be appropriately relaxed.
  • at least one of the N messages is located in the first sub-resource pool.
  • the second UE may receive at least one message from the first UE.
  • the second UE may clarify the reservation situation of other UEs for the resources in the first sub-resource pool. In this manner, constraints on the first UE can be reduced, and implementation of the first UE can be simplified.
  • at least one message may include the first message in the time domain among the M messages. The first UE sends M messages, which may not be sent at the same time.
  • the first UE may send one message first, and then send the next message after a period of time, and so on. Then, when the first UE sends the second message in the time domain among the M messages, part of the resources reserved by the first message may have been occupied by the first UE, that is, the first UE may be using resources Reserve resources. Then, if at least one message does not include the first message, for the second UE, before receiving at least one message, some resources in the first sub-resource pool may have been occupied by the first UE, and the second UE has Unknown to this, if the second UE also reserved these resources before, a resource collision may have occurred. Therefore, making at least one message include the first message in the time domain among the M messages can reduce resource collisions to a large extent.
  • the message is, for example, an SCI, such as a first-level SCI (SCI 1), or other messages.
  • SCI 1 a first-level SCI
  • the message may also have other names, such as "reservation message", etc., and the name does not limit the characteristics.
  • the message for reserving resources in the first sub-resource pool is sent in the first sub-resource pool, so that the UE of the first type can monitor the message.
  • the first UE needs to send data in the sub-resource pool of the Redcap UE, or send data for
  • the message of resource reservation enables Redcap UE to monitor the data or message. In this way, the probability of resource collision can be reduced, and the effectiveness of the reservation mechanism can be ensured as much as possible.
  • the embodiment of the present application provides a fifth communication method, through which the probability of resource collision can also be reduced.
  • This method can continue to be applied to the scenario shown in FIG. 8 , for example, the first UE described below is UE1 in FIG. 8 , and the second UE is UE2 in FIG. 8 .
  • FIG. 11 again, which is a flowchart of the method.
  • the second UE sends a first message.
  • the first UE receives the first message from the second UE.
  • the second UE can send the first message in the first sub-resource pool, and the first UE can listen to the first message.
  • the first message may reserve the first resource, and the second UE reserves the first resource for sending the second data.
  • the first message further includes third indication information, and the third indication information may indicate that the sender (that is, the second UE) of the first message (or the third indication information) is a UE of the first type, such as RedCap UE, or the third indication information may indicate the bandwidth supported by the sender of the first message (or, the third indication information), or the third indication information may indicate the bandwidth supported by the sender of the first message (or, the third indication information). frequency band. This enables the UE receiving the first message to ascertain the capabilities of the second UE. For UEs that are not of the first type, such as non-RedCap UEs, it is not necessary to include the third indication information when sending a message.
  • the third indication information may indicate that the sender (ie, the second UE) of the first message (or, the third indication information) is not a UE of the first type, or the third indication information may indicate that the first message (or, the second UE) is not a UE of the first type. (3) the bandwidth supported by the sending end of the indication information), or the third indication information may indicate the frequency band supported by the sending end of the first message (or, the third indication information). This enables the UE receiving the first message to ascertain the capabilities of the second UE. Then, for the UE of the first type, such as RedCap UE, it is not necessary to include the third indication information when sending the message.
  • the first type such as RedCap UE
  • the first message includes two fields, one of the two fields carries information for reserving resources, and the other of the two fields carries third indication information.
  • the information for reserving resources and the third indication information may also be carried in a field included in the first message.
  • the subsequent steps may continue to be performed; if the first UE does not reserve the first resource, the subsequent steps do not need to be performed, and the first UE only needs to reserve the resource normally.
  • the first UE increases the priority indicated by the first message.
  • the first message may indicate a priority, which may be that of the second data.
  • the manner in which the first message indicates the priority is that the first message may carry priority information, and the priority information corresponds to the priority indicated by the first message.
  • the priority information is, for example, a priority value, such as any one of 1 to 8, or other values, and the value is determined by the priority of the second data.
  • the first UE obtains the priority value from the first message, and thus determines the priority indicated by the first message.
  • a smaller value of the priority indicates a higher priority
  • the first UE may decrease the value of the priority, which is equivalent to increasing the priority.
  • the priority value obtained by the first UE from the first message is 3, and the first UE may reduce the value to 2 or 1, which is equivalent to increasing the priority of the second data.
  • a larger value of the priority indicates a higher priority
  • the first UE may increase the value of the priority, which is equivalent to increasing the priority.
  • the priority value obtained by the first UE from the first message is 3, and the first UE may increase the value to 4 or 5, which is equivalent to increasing the priority of the second data.
  • the first UE when the first UE increases the priority, it may increase the step value according to the increase step value each time, and the step value is determined by the first UE or is pre-configured in the first UE. In the UE, it is specified by a protocol or configured by a network device. For example, the smaller the priority value is, the higher the priority is.
  • the priority value obtained by the first UE from the first message is 3, and the step value is 1, so the first UE may reduce the value to 2.
  • the priority indicated by the first message is already the highest priority and cannot be increased, the first UE does not need to increase the priority, that is, does not need to perform S1102.
  • a first priority is specified, and the first UE may raise the priority to the first priority.
  • the first priority is determined by the first UE, or is pre-configured in the first UE, or is specified by a protocol, or is configured by a network device.
  • the priority value obtained by the first UE from the first message is 3, and the first priority is 1, then the first UE may reduce the value to 1.
  • the first UE does not need to increase the priority, that is, does not need to perform S903.
  • the first UE determines whether the first message satisfies a first condition. If the first message satisfies the first condition, the first UE can preempt the first resource, and if the first message does not satisfy the first condition, the first UE cannot preempt the first resource.
  • the first condition includes that the priority of the first data is higher than the increased priority.
  • S1103 may specifically be that the first UE determines whether the priority of the first data is higher than the increased priority. If the priority of the first data is higher than the increased priority, it indicates that the first message meets the first condition, and if the priority of the first data is lower than the increased priority, it indicates that the first message does not satisfy the first condition. Wherein, if the priority of the first data is equal to the increased priority, it may indicate that the first message satisfies the first condition, or indicates that the first message does not satisfy the first condition.
  • the first data is data to be sent by the first UE.
  • the priority indicated by the first message was originally 3, but the first UE reduces it to 2.
  • the priority of the first data is 3, and the priority of the first data has a lower priority than the raised priority.
  • the smaller the value of the priority the higher the priority.
  • the priority indicated by the first message was originally 3, but the first UE reduces it to 2.
  • the priority of the first data is 1, and the priority of the first message is 3.
  • the priority of the data is higher than the raised priority.
  • the first condition includes that the increased priority satisfies the first threshold.
  • S1103 may specifically be that the first UE determines whether the increased priority satisfies the first threshold. If the increased priority meets the first threshold, it indicates that the first message meets the first condition, and if the increased priority does not meet the first threshold, it indicates that the first message does not meet the first condition.
  • the first threshold is, for example, the first priority.
  • a priority meets the first threshold for example, the priority is lower than or equal to the first threshold, and a priority does not meet the first threshold, for example, the priority is higher than the first threshold.
  • the first threshold is determined by the first UE, or is pre-configured in the first UE, or is specified by a protocol, or is configured by a network device.
  • the first condition includes that the signal strength of the first message is smaller than a first signal strength threshold. Then S1103 may specifically be that the first UE determines whether the signal strength of the first message is smaller than the first signal strength threshold. If the signal strength of the first message is less than the first signal strength threshold, it indicates that the first message meets the first condition, and if the signal strength of the first message is greater than or equal to the first signal strength threshold, it indicates that the first message does not meet the first condition.
  • the first signal strength threshold is determined by the first UE, or is pre-configured in the first UE, or is specified by a protocol, or is configured by a network device.
  • the first signal strength threshold is determined according to the increased priority and/or the priority of the first data.
  • the first signal strength threshold includes, for example, a reference signal receiving power (reference signal receiving power, RSRP) value and/or a reference signal receiving quality (reference signal receiving quality, RSRQ) value, or may also include other parameter values . If the first condition is implemented in this way, then optionally, S1102 may not be executed, that is, the first UE may not increase the priority indicated by the first message, but determines whether the signal strength of the first message is lower than that of the first message. A signal strength threshold is enough.
  • the first UE may compare the priority of the first data with the increased priority, or compare the first threshold with the increased priority, or may compare the signal strength of the first message with the Comparing the signal strength threshold, the realization method is more flexible.
  • the above three implementations of the first condition can be used alone, or any two or three of the above three implementations can also be used in combination.
  • the first implementation of the first condition can be combined with the third implementation, then the first condition includes that the priority of the first data is higher than the increased priority, and includes that the signal strength of the first message is lower than the first Signal strength threshold.
  • S1103 may specifically be that the first UE determines whether the priority of the first data is higher than the increased priority, and determines whether the signal strength of the first message is smaller than the first signal strength threshold.
  • the combination mode is also similar.
  • the first UE When the first message satisfies the first condition, the first UE sends the second message in the first sub-resource pool. However, when the first message does not satisfy the first condition, the first UE does not send the second message in the first sub-resource pool. For the circumstances under which the first message satisfies the first condition and under which conditions it does not satisfy the first condition, reference may be made to the introduction of S1103.
  • the second UE receives the second message from the first UE.
  • the first UE does not send the second message, that is, does not preempt the first resource.
  • the second message is sent by, for example, broadcasting, and the second message is also used to reserve the first resource.
  • the second message may be regarded as a preemption message. That is to say, by increasing the priority indicated by the first message, it can be ensured that the UE of the first type uses resources in the first sub-resource pool as much as possible. However, if the first message does not satisfy the first condition, UEs that are not of the first type may preempt resources in the first sub-resource pool, so as to ensure the sending of data with a higher priority as much as possible. In addition, UEs not of the first type also send preemption messages in the first sub-resource pool, so that UEs of the first type can monitor the preemption messages, thereby reducing resource collisions.
  • the first UE does not seize the first resource. At this time, the first UE may continue to send messages to reserve resources other than the first resource to send the first data, or the first UE may continue to send messages to reserve resources other than the first resource to send the first data, or A UE may also not reserve resources and not send the first data.
  • the first message is located in the first sub-resource pool and is sent by the second UE.
  • the first message includes third indication information, such as indicating that the second UE is a RedCap UE.
  • the first message is used to reserve the first resource.
  • there is a third message and the third message also reserves the first resource, but the third message is sent outside the first sub-resource pool, so the third message cannot preempt the first resource.
  • the utilization rate of resources in the first sub-resource pool can be improved on the premise of ensuring that the first type of UEs use the first sub-resource pool as much as possible.
  • the preemption message is sent in the first sub-resource pool, which can also reduce resource collisions and ensure the effectiveness of the reservation mechanism.
  • the embodiment of the present application provides a sixth communication method, through which the probability of resource collision can also be reduced.
  • This method can continue to be applied to the scenario shown in FIG. 8 , for example, the first UE described below is UE1 in FIG. 8 , and the second UE is UE2 in FIG. 8 .
  • FIG. 13 again, which is a flowchart of the method.
  • the first UE lowers the priority of the first data.
  • the first data is data to be sent by the first UE, and the first UE needs to reserve resources for sending the first data. Before reserving resources, the first UE may first lower the priority of the first data.
  • the priority of the first data is represented by a first priority value
  • the physical layer of the first UE may obtain the first priority from a high layer of the first UE (such as a media access control (media access control, MAC) layer or an application layer, etc.)
  • a priority value For example, a smaller value of the priority indicates a higher priority, and the first UE may increase the value of the first priority, which is equivalent to lowering the priority.
  • the first priority value obtained by the first UE is 3, and the first UE may increase the value to 4 or 5, which is equivalent to lowering the priority of the first data.
  • a larger value of the priority indicates a higher priority, and the first UE may decrease the value of the first priority, which is equivalent to lowering the priority.
  • the first priority value obtained by the first UE is 3, and the first UE may reduce the value to 2 or 1, which is equivalent to lowering the priority of the first data.
  • the first UE can reduce the priority of the first data according to the step value or according to the specified priority.
  • the difference from the embodiment shown in FIG. 11 is that the embodiment shown in FIG. 11 is to increase the priority.
  • the application embodiment lowers the priority, but the execution methods are similar, so reference can be made to the introduction of the embodiment shown in FIG. 11 .
  • the first priority of can be the same or different.
  • the first UE sends a message in the first sub-resource pool.
  • the second UE receives the message from the first UE.
  • the first UE may reserve resources in the first sub-resource pool to send the first data, for example, the resource reserved by the message is the first resource.
  • the message may include a second priority value, where the second priority value is the priority value corresponding to the reduced priority.
  • the second UE may determine whether the priority of the data to be sent by the second UE (such as the second data) is higher than the priority corresponding to the second priority value, if the priority of the second data is higher than the priority of the first If the priority corresponding to the second priority value, the second UE may occupy the first resource; and if the priority of the second data is lower than or equal to the priority corresponding to the second priority value, the second UE may not occupy the first resource. resources, thereby reducing resource collisions.
  • the second UE may determine whether the priority corresponding to the second priority value satisfies the third threshold. If the priority corresponding to the second priority value meets the third threshold, it indicates that the second UE cannot occupy the first resource, and if the priority corresponding to the second priority value does not meet the third threshold, it indicates that the second UE can continue to occupy the first resource. a resource.
  • the third threshold is, for example, the second priority.
  • a priority meets the third threshold, for example, the priority is higher than the third threshold, and a priority does not meet the third threshold, for example, the priority is lower than or equal to the third threshold. .
  • the second UE may compare the priority of the second data with the priority corresponding to the second priority value, and may also compare the third threshold with the priority corresponding to the second priority value.
  • the third threshold is determined by the second UE, or is pre-configured in the second UE, or is specified by a protocol, or is configured by a network device.
  • the second UE may determine whether the signal strength of the message is greater than the second signal strength threshold. If the signal strength of the message is greater than the second signal strength threshold, it indicates that the second UE cannot occupy the first resource, and if the signal strength of the message is smaller than the second signal strength threshold, it indicates that the second UE can continue to occupy the first resource. If the signal strength of the message is equal to the second signal strength threshold, it may indicate that the second UE cannot occupy the first resource, or that the second UE can occupy the first resource.
  • the second signal strength threshold is determined by the second UE, or is pre-configured in the second UE, or is specified by a protocol, or is configured by a network device. For example, the second signal strength threshold is determined according to the second priority value and/or the priority of the second data.
  • the priority of the data to be sent by the UE may be lowered so as to ensure that the resources in the first sub-resource pool are available for the first sub-resource pool as much as possible.
  • the utilization rate of resources in the first sub-resource pool is improved.
  • messages for reserving resources are sent in the first sub-resource pool, which can also reduce collisions and ensure the effectiveness of the reservation mechanism.
  • the embodiment of the present application provides a seventh communication method, through which the probability of resource collision can also be reduced.
  • This method can continue to be applied to the scenario shown in FIG. 8 , for example, the first UE described below is UE1 in FIG. 8 , and the second UE is UE2 in FIG. 8 .
  • FIG. 14 again, which is a flowchart of the method.
  • the first UE sends a first message in the second sub-resource pool.
  • the first UE wants to send the first data, it reserves resources through the first message.
  • the first message can reserve the first resource.
  • the frequency domain location of the first resource is located in the first sub-resource pool, that is, the first resource It is a resource in the first sub-resource pool.
  • the second UE Since the first message is sent in the second sub-resource pool but not in the first sub-resource pool, the second UE cannot monitor the first message.
  • the second UE sends a second message in the first sub-resource pool.
  • the first UE receives the second message from the second UE.
  • the second UE wants to send the second data, it reserves resources through the second message, for example, the second message is used to reserve the second resources. Because the second UE has not heard the first message, and does not know that the first resource has been reserved by the first UE, the second UE considers that the first resource is available. Therefore, the first resource and the second resource reserved by the second message
  • the resource may be the same resource, or the first resource may overlap with the second resource. Of course, there may be no intersection between the first resource and the second resource, that is, they are different resources.
  • the second sub-resource pool includes the first sub-resource pool, so the second UE sends the second message in the first sub-resource pool, and the first UE can listen to the second message.
  • the first resource overlaps with the second resource, the first UE does not send data on the first resource, or the first UE does not send data on overlapping resources between the first resource and the second resource.
  • the first resource and the second resource have overlapping resources, which can also be understood as the intersection of the first resource and the second resource.
  • overlapping resources may also be called “intersection resources”. It is understood that the names do not constitute limitations on the features themselves.
  • the first UE can give up using the first resource. resources, that is, do not send data on the first resource, and reserve the first resource for use by the second UE.
  • the first UE does not need to consider the size relationship between the priority of the first data and the priority of the second data, Directly giving up the use of the first resource may enable the second UE to normally use the second resource, so as to reduce resource collisions.
  • the first UE may determine whether the first priority is higher than the second priority, and if the first priority is higher If the first priority is lower than the second priority, the first UE will give up using the first resource, and if the first priority is lower than the second priority, the first UE will continue to use the first resource. If the first priority is equal to the second priority, the first UE may give up using the first resource, or may continue to use the first resource.
  • the second priority is the priority indicated by the second message. The first priority is lower than the priority indicated by the first message, or lower than the priority of the first data, that is to say, the first priority is the reduced priority of the first data.
  • the first UE may determine whether the second priority is higher than the fourth threshold, and if the second priority is higher than If the fourth threshold is lower than the fourth threshold, the first UE will give up using the first resource, and if the second priority is lower than the fourth threshold, the first UE will continue to use the first resource.
  • the second priority is the priority indicated by the second message.
  • the fourth threshold is, for example, configured by the first UE, or configured by a network device, or pre-configured in the first UE, or predefined by a protocol.
  • the fourth threshold is, for example, lower than the priority of the first data.
  • the first UE determines that the second UE has reserved the same resources as the first UE, the first UE needs to consider whether the data priority of the second UE is higher than the threshold or higher than the data priority of the first UE priority to determine whether to give up the resource.
  • the first UE does not need to consider this priority, or the first UE can consider a lower priority (the fourth threshold lower than the priority of the data of the first UE, or the data of the second UE The priority is higher than the "reduced data priority of the first UE").
  • the first type can use the first sub-resource pool when the first type of UE does not use the first sub-resource pool, which ensures that the first type of UE uses the first sub-resource pool pool power.
  • the first UE may not send data on the intersection resource, but may send data on the third resource.
  • the intersection resource refers to the intersection part of the first resource and the second resource, for example, the first resource includes other resources besides the intersection resource
  • the third resource refers to the intersection resource that the first resource includes besides the intersection resource. resource.
  • the first UE may not send data on the intersection resource, but may send data on the third resource. Because the third resource has no intersection with the second resource, the data sent by the first UE on the third resource will not affect the second UE, and this can also improve resource utilization and reduce the transmission delay of the first data .
  • the first UE does not send data on the first resource.
  • the physical layer of the first UE sends indication information to a high layer (such as a MAC layer or an application layer, etc.) of the first UE, and the indication information may indicate that the second A resource is excluded from available resources.
  • the high layer of the first UE can exclude the first resource from the available resources according to the indication information. In this way, for the first UE, the first resource is an unavailable resource, and the first UE will not be on the first resource. send data. If the first UE does not send data on the intersection resource, the processing manner is similar.
  • the first UE may send the first data on the first resource.
  • the embodiment of the present application provides an eighth communication method, through which the probability of resource collision can also be reduced.
  • This method can continue to be applied to the scenario shown in FIG. 8 , for example, the first UE described below is UE1 in FIG. 8 , and the second UE is UE2 in FIG. 8 .
  • FIG. 15 again, which is a flowchart of the method.
  • the second UE sends a first message.
  • the first UE receives the first message from the second UE.
  • the first UE is, for example, a UE of the first type, and the first UE is, for example, applicable to the first sub-resource pool.
  • the second UE may be a UE of the first type, or a UE of another type, such as a UE of the second type, and the second UE is, for example, applicable to the second sub-resource pool.
  • the second UE can send the first message in the first sub-resource pool, and the first UE can listen to the first message.
  • the first message may reserve the first resource, and the second UE reserves the first resource for sending the second data.
  • the first message further includes third indication information, and the third indication information may indicate the sender of the first message (or the third indication information) (for example, the second UE) is a UE of the first type, such as a RedCap UE, or the third indication information may indicate the bandwidth supported by the sender of the first message (or, the third indication information), or the third indication information may indicate the first message (or , the third indication information) the frequency band supported by the sender.
  • the third indication information may be included when sending the message, and for the UE of the non-first type, such as non-RedCap UE, the third indication information may not be included when sending the message.
  • the third indication information may indicate that the sender (ie, the second UE) of the first message (or the third indication information) is not the UE of the first type, or the third indication information
  • the indication information may indicate the bandwidth supported by the sender of the first message (or, the third indication information), or the third indication information may indicate the frequency band supported by the sender of the first message (or, the third indication information). This enables the UE receiving the first message to ascertain the capabilities of the second UE.
  • the third indication information may be included when sending the message, and for the first type of UE, such as RedCap UE, the third indication information may not be included when sending the message.
  • the first message may not carry the third indication information.
  • the receiving end can determine that the second UE is not the first type of UE according to the fact that the first message does not carry the third indication information.
  • the first message includes two fields, one of the two fields carries information for reserving resources, and the other of the two fields carries the third indication information.
  • the information for reserving resources and the third indication information may also be carried in a field included in the first message.
  • the subsequent steps may continue to be performed; if the first UE does not reserve the first resource, the subsequent steps do not need to be performed, and the first UE only needs to reserve the resource normally.
  • the first UE lowers the priority indicated by the first message.
  • the first message does not carry the third indication information, or the third indication information carried in the first message indicates that the second UE is not a UE of the first type (for example, the third indication information indicates the type of the second UE, and the type is not the first type, it is considered that the third indication information indicates that the second UE is not the first type of UE)
  • the first UE may perform S1502, otherwise, the first UE may not perform S1502, but compare the first message normally The priority and the priority of the first data are sufficient.
  • the first message may indicate a priority, which may be that of the second data.
  • the manner in which the first message indicates the priority is that the first message may carry priority information, and the priority information corresponds to the priority indicated by the first message.
  • the priority information is, for example, a priority value, such as any one of 1 to 8, or other values, and the value is determined by the priority of the second data.
  • the first UE obtains the priority value from the first message, and thus determines the priority indicated by the first message.
  • a smaller value of the priority indicates a higher priority
  • the first UE may increase the value of the priority, which is equivalent to lowering the priority.
  • the priority value obtained by the first UE from the first message is 3, and the first UE may increase the value to 4 or 5, which is equivalent to lowering the priority of the second data.
  • the priority value obtained by the first UE from the first message is 3, and the first UE may reduce the value to 1 or 2, which is equivalent to reducing the priority of the second data.
  • the first UE when it lowers the priority, it can reduce the step value according to the step value, and the step value is determined by the first UE, or the step value is preconfigured in the first UE.
  • the UE In the UE, it is specified by a protocol or configured by a network device. For example, the smaller the priority value is, the higher the priority is.
  • the priority value obtained by the first UE from the first message is 3, and the step value is 1, so the first UE may increase the value to 4.
  • the first UE if the priority indicated by the first message is already the lowest priority and cannot be lowered any further, the first UE does not need to lower the priority again, that is, it does not need to perform S1502.
  • the first priority is specified, and the first UE may reduce the priority to the first priority.
  • the first priority is determined by the first UE, or is pre-configured in the first UE, or is specified by a protocol, or is configured by a network device.
  • the priority value obtained by the first UE from the first message is 1, and the first priority is 3, then the first UE may increase the value to 3 (for example, the larger the value, the lower the priority).
  • the first UE does not need to lower the priority, that is, does not need to perform S1502.
  • the first UE determines whether the first message satisfies the first condition. If the first message satisfies the first condition, the first UE can preempt the first resource, and if the first message does not satisfy the first condition, the first UE cannot preempt the first resource.
  • the first condition includes that the priority of the first data is higher than the reduced priority.
  • S1503 may specifically be that the first UE determines whether the priority of the first data is higher than the reduced priority. If the priority of the first data is higher than the reduced priority, it indicates that the first message meets the first condition, and if the priority of the first data is lower than the reduced priority, it indicates that the first message does not meet the first condition. Wherein, if the priority of the first data is equal to the reduced priority, it may indicate that the first message satisfies the first condition, or indicates that the first message does not satisfy the first condition.
  • the first data is data to be sent by the first UE.
  • the priority indicated by the first message was originally 3, but the first UE increases it to 4.
  • the priority of the first data is 3, and the priority of the first data has a higher priority than the lowered priority.
  • the smaller the priority value the higher the priority.
  • the priority indicated by the first message was originally 3, but the first UE increases it to 5, and the priority of the first data is 6.
  • the data has a lower priority than the reduced priority.
  • the first condition includes that the reduced priority satisfies the second threshold.
  • S1103 may specifically be that the first UE determines whether the reduced priority meets the second threshold. If the reduced priority meets the second threshold, it indicates that the first message meets the first condition, and if the reduced priority does not meet the second threshold, it indicates that the first message does not meet the first condition.
  • the second threshold is, for example, the first priority.
  • a priority meets the second threshold for example, the priority is lower than or equal to the second threshold, and a priority does not meet the second threshold, for example, the priority is higher than the second threshold.
  • the second threshold is determined by the first UE, or is pre-configured in the first UE, or is specified by a protocol, or is configured by a network device.
  • the first condition includes that the signal strength of the first message is smaller than a first signal strength threshold.
  • S1503 may specifically be that the first UE determines whether the signal strength of the first message is smaller than the first signal strength threshold. If the signal strength of the first message is less than the first signal strength threshold, it indicates that the first message meets the first condition, and if the signal strength of the first message is greater than or equal to the first signal strength threshold, it indicates that the first message does not meet the first condition.
  • the first signal strength threshold is determined by the first UE, or is pre-configured in the first UE, or is specified by a protocol, or is configured by a network device.
  • the first signal strength threshold is determined according to the increased priority and/or the priority of the first data.
  • the first signal strength threshold includes, for example, a value of RSRP and/or a value of RSRQ, or may also include values of other parameters. If the first condition is implemented in this manner, then optionally, S1502 may not be performed, that is, the first UE may not increase the priority indicated by the first message, but determines whether the signal strength of the first message is lower than that of the first message.
  • a signal strength threshold is enough.
  • the first UE may compare the priority of the first data with the reduced priority, or compare the first threshold with the reduced priority, or may compare the signal strength of the first message with the first Comparing the signal strength threshold, the realization method is more flexible.
  • the above three implementations of the first condition can be used alone, or any two or three of the above three implementations can also be used in combination.
  • the first implementation of the first condition can be combined with the third implementation, then the first condition includes that the priority of the first data is higher than the reduced priority, and includes that the signal strength of the first message is lower than the first Signal strength threshold.
  • S1503 may specifically be that the first UE determines whether the priority of the first data is higher than the reduced priority, and determines whether the signal strength of the first message is smaller than the first signal strength threshold.
  • the priority of the first data is higher than the reduced priority, and the signal strength of the first message is less than the first signal strength threshold, it indicates that the first message meets the first condition; and if the priority of the first data is lower than or equal to The reduced priority, and/or the signal strength of the first message is greater than or equal to the first signal strength threshold, indicates that the first message does not meet the first condition. If the other two or three modes are combined in the above three implementation modes, the combination mode is also similar.
  • the first UE When the first message satisfies the first condition, the first UE sends the second message in the first sub-resource pool. However, when the first message does not satisfy the first condition, the first UE does not send the second message in the first sub-resource pool. For the circumstances under which the first message satisfies the first condition and under which conditions it does not satisfy the first condition, reference may be made to the introduction of S1503.
  • the second UE receives the second message from the first UE.
  • the second message may carry third indication information
  • the third indication information may indicate that the sender of the third indication information is a UE of the first type
  • the third indication information carried in the second message may indicate that the first UE is the first type of UE.
  • the first UE does not send the second message, that is, does not preempt the first resource.
  • the second message is sent by, for example, broadcasting, and the second message is also used to reserve the first resource.
  • the second message may be regarded as a preemption message. That is to say, by lowering the priority indicated by the first message, it can be ensured that the first type of UEs use the resources in the first sub-resource pool as much as possible. However, if the first message does not satisfy the first condition, UEs that are not of the first type may preempt resources in the first sub-resource pool, so as to ensure the sending of data with a higher priority as much as possible.
  • UEs not of the first type also send preemption messages in the first sub-resource pool, so that UEs of the first type can monitor the preemption messages, thereby reducing resource collisions.
  • the first UE does not seize the first resource.
  • the first UE may continue to send messages to reserve resources other than the first resource to send the first data, or the first UE may continue to send messages to reserve resources other than the first resource to send the first data, or A UE may also not reserve resources and not send the first data.
  • the implementation shown in FIG. 9 may be performed.
  • Example, the embodiment shown in FIG. 11 , the embodiment shown in FIG. 13 or the embodiment shown in FIG. 14 is a scheme of any one of the embodiments.
  • the first UE is a UE of the second type, and the receiving end of the data A is a UE of the first type (for the introduction of the first type, please refer to the foregoing embodiment)
  • it is not necessary to execute the embodiment shown in FIG. 11 In the embodiment shown in FIG. 13 or one or more of the embodiments shown in FIG.
  • the first UE can normally reserve resources and send data A even if it is in the first sub-resource pool.
  • the third type is, for example, a non-bandwidth-limited type, such as a partial sensing type, a full sensing type, or a random resource selection type.
  • the second type and the third type may be the same type, for example, both the second type and the third type are fully perceptive types; or the second type and the third type may also be different types, for example, the second type is a fully perceptual type,
  • the third type is the partial perception type.
  • Data A is the data to be sent by the first UE through the resource reserved by the first UE (for example, the first data and the data in the embodiment shown in FIG. 11 or the embodiment shown in FIG.
  • the first UE occupies resources in the first sub-resource pool to send data to the UE of the first type, and the resources reserved by the first UE are equivalent to being allocated by the first sub-resource pool. If it is used by UEs of different types, the first UE can send normally.
  • any one or more of the embodiments shown in FIG. 2, the embodiment shown in FIG. 5, the embodiment shown in FIG. 6, or the embodiment shown in FIG. 15 can be used in combination, for example, as shown in FIG. 2
  • the embodiment shown in FIG. 5 , the embodiment shown in FIG. 6 , and the embodiment shown in FIG. 15 can be combined, for example, the first UE described in the above embodiments is the same UE; or, FIG.
  • the embodiment shown in 2, the embodiment shown in FIG. 5, the embodiment shown in FIG. 6, and the embodiment shown in FIG. 15 may not be combined, but may be regarded as independent solutions.
  • any one or more of the embodiments shown in FIG. 9, the embodiment shown in FIG. 11, the embodiment shown in FIG. 13 or the embodiment shown in FIG. 14 can be used in combination, for example, as shown in FIG. 9
  • the embodiment shown in FIG. 11 , the embodiment shown in FIG. 13 and the embodiment shown in FIG. 14 can be combined, for example, the first UE described in the above embodiments is the same UE; or, the embodiment shown in FIG. 9
  • the embodiment shown in FIG. 11 , the embodiment shown in FIG. 13 and the embodiment shown in FIG. 14 may not be combined, but may be regarded as independent solutions.
  • FIG. 16 shows a schematic structural diagram of a communication device 1600 provided by an embodiment of the present application.
  • the communication device 1600 may be the embodiment shown in FIG. 2 , the embodiment shown in FIG. 5 , the embodiment shown in FIG. 6 , the embodiment shown in FIG. 9 , the embodiment shown in FIG. 11 , the embodiment shown in FIG. 13
  • the first UE described in any one of the embodiment, the embodiment shown in FIG. 14 or the embodiment shown in FIG. 15 is used to implement the method performed by the first UE in the foregoing method embodiment.
  • Communications device 1600 includes one or more processors 1601 .
  • the processor 1601 may also be referred to as a processing unit, and may implement certain control functions.
  • the processor 1601 may be a general-purpose processor or a special-purpose processor. For example, including: baseband processor, central processing unit, application processor, modem processor, graphics processor, image signal processor, digital signal processor, video codec processor, controller, memory, and/or Neural Network Processor, etc.
  • the baseband processor can be used to process communication protocols and communication data.
  • the central processing unit may be used to control the communication device 1600, execute software programs and/or process data. Different processors may be independent devices, or may be integrated in one or more processors, for example, integrated in one or more application-specific integrated circuits.
  • the communication device 1600 includes one or more memories 1602 for storing instructions 1604, and the instructions 1604 can be executed on the processor, so that the communication device 1600 executes the methods described in the foregoing method embodiments.
  • data may also be stored in the memory 1602 .
  • the processor and memory can be set separately or integrated together.
  • the communication device 1600 may store instructions 1603 (also referred to as codes or programs sometimes), and the instructions 1603 may be executed on the processor, so that the communication device 1600 executes the methods described in the above embodiments .
  • Data may be stored in the processor 1601.
  • the communication device 1600 may further include a transceiver 1605 and an antenna 1606 .
  • the transceiver 1605 may be called a transceiver unit, a transceiver, a transceiver circuit, a transceiver, an input/output interface, etc., and is used to realize the transceiver function of the communication device 1600 through the antenna 1606 .
  • the communication device 1600 may further include one or more of the following components: a wireless communication module, an audio module, an external memory interface, an internal memory, a universal serial bus (universal serial bus, USB) interface, a power management module, an antenna, Speakers, microphones, I/O modules, sensor modules, motors, cameras, or displays, etc. It can be understood that, in some embodiments, the communication device 1600 may include more or fewer components, or some components may be integrated, or some components may be separated. These components may be realized by hardware, software, or a combination of software and hardware.
  • the processor 1601 and the transceiver 1605 described in the embodiment of the present application can be realized in integrated circuit (integrated circuit, IC), analog IC, radio frequency integrated circuit (radio frequency identification, RFID), mixed signal IC, application specific integrated circuit (application specific integrated circuit, ASIC), printed circuit board (printed circuit board, PCB), or electronic equipment, etc.
  • the communication device described herein can be an independent device (for example, an independent integrated circuit, a mobile phone, etc.), or it can be a part of a larger device (for example, a module that can be embedded in other devices).
  • a module for example, a module that can be embedded in other devices.
  • An embodiment of the present application provides a terminal device, and the terminal device (referred to as UE for convenience of description) may be used in the foregoing embodiments.
  • the terminal equipment includes the embodiment shown in FIG. 2, the embodiment shown in FIG. 5, the embodiment shown in FIG. 6, the embodiment shown in FIG. 9, the embodiment shown in FIG. 11, the embodiment shown in FIG. 13
  • Corresponding means, units and/or circuits of the first UE function described in any one of the illustrated embodiment, the embodiment illustrated in FIG. 14 or the embodiment illustrated in FIG. 15 .
  • the terminal device includes a transceiver module, configured to support the terminal device to implement a transceiver function, and a processing module, configured to support the terminal device to process signals.
  • FIG. 17 shows a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device 1700 may be applicable to the architecture shown in FIG. 1 , FIG. 4 , or FIG. 8 .
  • FIG. 17 only shows main components of a terminal device 1700 .
  • a terminal device 1700 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process communication protocols and communication data, control the entire terminal device 1700, execute software programs, and process data of the software programs.
  • Memory is primarily used to store software programs and data.
  • the control circuit is mainly used for conversion of baseband signal and radio frequency signal and processing of radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, microphones, keyboards, etc., are mainly used to receive data input by users and output data to users.
  • the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the control circuit, and the control circuit performs radio frequency processing on the baseband signal, and sends the radio frequency signal through the antenna in the form of electromagnetic waves.
  • the control circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data .
  • FIG. 17 only shows a memory and a processor.
  • terminal device 1700 may include multiple processors and memories.
  • a storage may also be called a storage medium or a storage device, which is not limited in this embodiment of the present invention.
  • the processor may include a baseband processor and a central processing unit, the baseband processor is mainly used to process communication protocols and communication data, and the central processor is mainly used to control the entire terminal device 1700, Executing the software program, processing the data of the software program.
  • the processor in FIG. 17 integrates the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit can also be independent processors, interconnected through technologies such as a bus.
  • the terminal device 1700 may include multiple baseband processors to adapt to different network standards, the terminal device 1700 may include multiple central processors to enhance its processing capability, and various components of the terminal device 1700 may be connected through various buses.
  • the baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit may also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data can be built in the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • a terminal device 1700 includes a transceiver unit 1710 and a processing unit 1720 .
  • the transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver device, and the like.
  • the device in the transceiver unit 1710 for realizing the receiving function may be regarded as a receiving unit
  • the device in the transceiver unit 1710 for realizing the sending function may be regarded as a sending unit, that is, the transceiver unit 1710 includes a receiving unit and a sending unit.
  • the receiving unit may also be called a receiver, receiver, receiving circuit, etc.
  • the sending unit may be called a transmitter, transmitter, or transmitting circuit, etc.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division.
  • the units described as separate components may or may not be physically separated.
  • the components shown may or may not be physical units, that is, they may be located in one place, or they may be distributed over multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned computer-readable storage medium may be any available medium that can be accessed by a computer.
  • computer-readable media may include random access memory (random access memory, RAM), read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), Erasable programmable read-only memory (erasable PROM, EPROM), electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD- ROM), universal serial bus flash disk (universal serial bus flash disk), removable hard disk, or other optical disk storage, magnetic disk storage medium, or other magnetic storage device, or can be used to carry or store desired data in the form of instructions or data structures program code and any other medium that can be accessed by a computer.
  • RAM random access memory
  • read-only memory read-only memory
  • ROM programmable read-only memory
  • PROM programmable read-only memory
  • Erasable programmable read-only memory Erasable programmable read-only memory
  • EPROM electrically erasable programmable read-only memory
  • EEPROM electrically erasable
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous connection dynamic random access memory
  • direct rambus RAM direct rambus RAM, DR RAM
  • Embodiment 1 A communication method applied to a first terminal device, where the first terminal device is a first type of terminal device, the method comprising:
  • first information is used to indicate a reference frequency domain location of a first resource pool, where the first resource pool is a resource pool configured for the first type of terminal device, and the reference frequency domain location Including one or more of the starting frequency domain position, ending frequency domain position, or intermediate frequency domain position of the first resource pool;
  • the second information includes one or more of the following: a bandwidth supported by the first type of terminal device, a The bandwidth of the subchannel, or the number of subchannels occupied by the first resource pool.
  • Embodiment 2 according to the method described in embodiment 1,
  • the reference frequency domain position is the frequency domain position of the subchannel where the sidelink synchronization signal is located; or,
  • the reference frequency domain position is the frequency domain position of the subcarrier with the lowest frequency where the sidelink synchronization signal is located; or,
  • the reference frequency domain position is the frequency domain position of the subcarrier with the highest frequency where the sidelink synchronization signal is located; or,
  • the reference frequency domain position is the frequency domain position of the first subcarrier occupied by the sidelink synchronization signal.
  • Embodiment 3 The method according to Embodiment 2, the first subcarrier is the 66th or 67th subcarrier.
  • the frequency domain range of the first resource pool includes the frequency domain position of the sidelink synchronization signal.
  • determining the first information includes:
  • the first information is received from a network device, where the first information further includes first indication information, where the first indication information is used to indicate that the first resource pool is applicable to the first type of terminal equipment.
  • Embodiment 6 According to the method described in any one of Embodiments 1 to 5, the bandwidth of the first resource pool is less than or equal to the bandwidth supported by the first type of terminal equipment.
  • the first type of terminal device is a terminal device with limited bandwidth.
  • Embodiment 8 A communication method applied to a first terminal device, the method comprising:
  • the first request message is used to request resources, and the resources are used to send data to the second terminal device, and the first request message includes second indication information, and the first The second indication information is used to indicate that the first terminal device and/or the second terminal device is a first type of terminal device, or indicate the frequency band supported by the first terminal device and/or the second terminal device, or indicate that the Bandwidth supported by the first terminal device and/or the second terminal device, or, the second indication information includes an identifier or index of the second terminal device;
  • a first response message is received from the network device, the first response message indicating a first resource.
  • the second indication information includes the identifier or index of the second terminal device, and is used to indicate that the second terminal device is the first type of terminal device.
  • Embodiment 10 The method according to embodiment 8 or 9, wherein the terminal device of the first type is a reduced capability terminal device.
  • Embodiment 11 The method according to any one of embodiments 8 to 10,
  • the second indication information includes an identifier or index of the second terminal device
  • the method further includes: sending third information to the network device, where the third information includes at least one received information of the first terminal device information about the terminal device, the at least one receiving terminal device includes the second terminal device, and the information about one receiving terminal device included in the third information includes an identifier of the receiving terminal device and an index corresponding to the identifier, or , the information of a receiving terminal device included in the third information includes an index of the receiving terminal device and capability information of the receiving terminal device, where the index of the receiving terminal device is used by the network device to determine the receiving terminal A capability of the device, where the capability of the receiving terminal device is used to indicate whether the receiving terminal device is the first type of terminal device.
  • Embodiment 12 The terminal device according to any one of Embodiments 8 to 11, the method further includes:
  • Embodiment 13 The terminal device according to any one of embodiments 8 to 12, the frequency domain position of the first resource is located within the frequency band supported by the second terminal device.
  • Embodiment 14 A communication method applied to a first terminal device, the method comprising:
  • a resource pool is a resource pool configured for first-type terminal devices, where M and N are both positive integers, and N is less than or equal to M.
  • Embodiment 15 The method according to embodiment 14, the at least one message includes the first message in the time domain among the M messages.
  • Embodiment 16 According to the method described in Embodiment 14 or 15, the frequency domain positions of the N messages are all located in the first resource pool.
  • Embodiment 17 A communication method applied to a first terminal device, the method comprising:
  • the message is used to reserve resources, and the frequency domain position of the message is located outside the first resource pool, the first resource pool is a resource pool configured for the first type of terminal equipment, and the resource pool reserved by the message The resources do not include the resources in the first resource pool.
  • Embodiment 18 A communication method applied to a first terminal device, the method comprising:
  • the priority of the first data is higher than the increased priority, or determining that the increased priority satisfies a first threshold, wherein the first data is the reserved data to be reserved through the second message the data sent by the first resource;
  • Embodiment 19 The method according to embodiment 18, the first terminal device is a second type of terminal device.
  • Embodiment 20 A communication method applied to a first terminal device, the method comprising:
  • the message is used to reserve resources for the first data, the frequency domain location of the resource is located in a first resource pool, the first terminal device is a second type of terminal device, and the first resource pool It is a resource pool configured for the first type of terminal equipment.
  • Embodiment 21 A communication method applied to a first terminal device, the method comprising:
  • the first message is used to reserve a first resource, the frequency domain location of the first resource is located in the first resource pool, the first terminal device is a second type of terminal device, and the first The resource pool is a resource pool configured for the first type of terminal device;
  • not sending data on the first resource includes:
  • the first resource is excluded from candidate resources, and the candidate resources are used to send data.
  • Embodiment 23 According to the method described in Embodiment 21 or 22, the second resource pool has an intersection with the first resource pool, and the second resource pool is the resource pool used by the first terminal device.
  • Embodiment 24 A communications device comprising a processing unit configured to:
  • the first information is used to indicate a reference frequency domain location of a first resource pool, where the first resource pool is a resource pool configured for a first type of terminal device, and the reference frequency domain location includes the One or more of the starting frequency domain position, the ending frequency domain position, or the middle frequency domain position of the first resource pool;
  • the second information includes one or more of the following: a bandwidth supported by the first type of terminal device, a The bandwidth of the subchannel, or the number of subchannels occupied by the first resource pool.
  • Embodiment 25 The communication device of Embodiment 24,
  • the reference frequency domain position is the frequency domain position of the subchannel where the sidelink synchronization signal is located; or,
  • the reference frequency domain position is the frequency domain position of the subcarrier with the lowest frequency where the sidelink synchronization signal is located; or,
  • the reference frequency domain position is the frequency domain position of the subcarrier with the highest frequency where the sidelink synchronization signal is located; or,
  • the reference frequency domain position is the frequency domain position of the first subcarrier occupied by the sidelink synchronization signal.
  • Embodiment 26 The communication device according to Embodiment 25, the first subcarrier is the 66th or 67th subcarrier.
  • Embodiment 27 The communication device according to any one of Embodiments 24 to 26, the frequency domain range of the first resource pool includes the frequency domain position of the sidelink synchronization signal.
  • Embodiment 28 The communication device according to any one of embodiments 24 to 27, further comprising a transceiver unit, and the processing unit is configured to determine the first information in the following manner:
  • the first information is received from a network device through the transceiver unit, the first information further includes first indication information, and the first indication information is used to indicate that the first resource pool is applicable to the first type of resources Terminal Equipment.
  • Embodiment 29 The communication device according to any one of Embodiments 24 to 28, the bandwidth of the first resource pool is less than or equal to the bandwidth supported by the first type of terminal equipment.
  • Embodiment 30 The communication device according to any one of Embodiments 24 to 29, wherein the first type of terminal equipment is a terminal equipment with limited bandwidth.
  • a communication device comprising a transceiver unit configured to:
  • the first request message is used to request resources, and the resources are used to send data to the second terminal device
  • the first request message includes second indication information
  • the first The second indication information is used to indicate that the communication device and/or the second terminal device is the first type of terminal device, or indicate the frequency band supported by the communication device and/or the second terminal device, or indicate the communication device and/or the second terminal device or the bandwidth supported by the second terminal device, or, the second indication information includes the identifier or index of the second terminal device;
  • a first response message is received from the network device, the first response message indicating a first resource.
  • the second indication information includes the identifier or index of the second terminal device, which is used to indicate that the second terminal device is the first type of terminal device .
  • Embodiment 33 The communications apparatus according to embodiment 31 or 32, wherein the terminal device of the first type is a reduced capability terminal device.
  • Embodiment 34 The communication device according to any one of embodiments 31-33,
  • the second indication information includes an identifier or index of the second terminal device
  • the method further includes: sending third information to the network device, where the third information includes at least one receiving terminal device of the communication device
  • the at least one receiving terminal device includes the second terminal device
  • the information of one receiving terminal device included in the third information includes an identifier of the receiving terminal device and an index corresponding to the identifier, or
  • the The information of a receiving terminal device included in the third information includes an index of the receiving terminal device and capability information of the receiving terminal device, and the index of the receiving terminal device is used by the network device to determine the capability, where the capability of the receiving terminal device is used to indicate whether the receiving terminal device is the first type of terminal device.
  • Embodiment 35 The terminal device according to any one of Embodiments 31 to 34, the transceiver unit is further configured to send capability information of the communication device to the network device, and the capability information of the communication device is used for It is determined whether the communication device is the first type of terminal equipment.
  • Embodiment 36 The terminal device according to any one of embodiments 31 to 35, the frequency domain position of the first resource is located within the frequency band supported by the second terminal device.
  • Embodiment 37 A communication device, comprising a transceiver unit, configured to send M messages, resources reserved by N messages in the M messages are located in the first resource pool, and at least one of the N messages is The frequency domain position of is located in the first resource pool, the first resource pool is a resource pool configured for a first type of terminal device, M and N are both positive integers, and N is less than or equal to M.
  • Embodiment 38 The communications apparatus of embodiment 37, the at least one message comprises a first message in the time domain of the M messages.
  • Embodiment 39 The communication device according to embodiment 14 or 15, the frequency domain positions of the N messages are all located in the first resource pool.
  • Embodiment 40 A communication device, comprising a transceiver unit, configured to send a message, the message is used to reserve resources, and the frequency domain location of the message is located outside the first resource pool, and the first resource pool is configured for the second resource pool A resource pool of a type of terminal device, the resources reserved by the message do not include resources in the first resource pool.
  • Embodiment 41 A communication device comprising a transceiver unit and a processing unit, wherein,
  • the transceiving unit is configured to receive a first message from a second terminal device, the first message is used to reserve a first resource, and the first message includes third indication information, and the third indication information is used for Indicating that the second terminal device is a terminal device of the first type;
  • the processing unit is configured to increase the priority indicated by the first message
  • the processing unit is further configured to determine that the priority of the first data is higher than the increased priority, or determine that the increased priority satisfies the first threshold, wherein the first data is the first data to be passed. the data sent by the first resource reserved by the second message;
  • the transceiver unit is further configured to send a second message in a first resource pool, the second message is used to reserve the first resource, and the first resource pool is configured for the first type of terminal device resource pool.
  • Embodiment 42 The communication device of embodiment 41 which is a second type of communication device.
  • Embodiment 43 A communication device comprising a transceiver unit and a processing unit, wherein,
  • the processing unit is configured to reduce the priority of the first data
  • the transceiver unit is configured to send a message, the message is used to reserve a resource for the first data, the frequency domain location of the resource is located in the first resource pool, the communication device is a communication device of the second type, and the The first resource pool is a resource pool configured for terminal devices of the first type.
  • Embodiment 44 A communication device comprising a transceiver unit and a processing unit, wherein,
  • the transceiver unit is configured to send a first message, the first message is used to reserve a first resource, the frequency domain location of the first resource is located in the first resource pool, and the communication device is a second type of communication device , the first resource pool is a resource pool configured for a first type of terminal device;
  • the transceiver unit is further configured to receive a second message from a second terminal device, the second message is used to reserve a second resource, the second message includes third indication information, and the third indication information is used to indicate
  • the second terminal device is the first type of terminal device;
  • the processing unit is configured to, if it is determined that there is an intersection between the first resource and the second resource, not to send data on the intersection resource of the first resource and the second resource, or not to send data on the first resource Send data on.
  • Embodiment 45 The communication device according to embodiment 44, the processing unit is configured not to send data on the first resource by:
  • the first resource is excluded from candidate resources, and the candidate resources are used to send data.
  • Embodiment 46 According to the communication device described in Embodiment 44 or 45, the second resource pool has an intersection with the first resource pool, and the second resource pool is a resource pool used by the communication device.
  • Embodiment 47 A communication method, applied to a first terminal device, the method comprising:
  • the first message does not include third indication information, reduce the priority indicated by the first message, where the third indication information is used to indicate that the sender of the third indication information is a terminal device of the first type ;
  • Embodiment 48 The method according to embodiment 47, the second message further includes the third indication information.
  • Embodiment 49 The method according to embodiment 47 or 48, wherein the first terminal device is a first type of terminal device.
  • Embodiment 50 The method according to any one of embodiments 47-49, wherein the first type of terminal device is a terminal device with limited bandwidth.
  • Embodiment 51 A communication device comprising a transceiver unit and a processing unit, wherein,
  • the transceiving unit is configured to receive a first message from a second terminal device, and the first message is used to reserve a first resource;
  • the processing unit is configured to reduce the priority indicated by the first message if the first message does not include third indication information, where the third indication information is used to indicate the sender of the third indication information is a terminal device of the first type;
  • the processing unit is further configured to determine that the priority of the first data is higher than the reduced priority, or determine that the reduced priority satisfies a second threshold, wherein the first data is data;
  • the transceiving unit is further configured to send a second message in the first resource pool, where the second message is used to reserve the first resource.
  • Embodiment 52 The communication device according to Embodiment 51, the second message further includes the third indication information.
  • Embodiment 53 The communication device of embodiment 51 or 52, which is a first type of communication device.
  • Embodiment 54 The communication device according to any one of embodiments 51-53, wherein the communication device of the first type is a communication device with limited bandwidth.
  • Embodiment 55 An apparatus comprising means for performing the method described in any embodiment of the present application.
  • Embodiment 56 A computer program product, the computer program product comprising a computer program, when the computer program is run on a computer, the computer is made to execute the method according to any one of embodiments 1-7, Or make the computer execute the method as described in any one of Embodiments 8-13, or make the computer execute the method described in any one of Embodiments 14-16, or make the computer execute the method described in any one of Embodiments 14-16, or make the computer execute the method as described in Embodiment 8.
  • Example 17 The method described in Example 17, or causing the computer to execute the method as described in any one of Embodiments 18 to 19, or causing the computer to execute the method described in Embodiment 20, or causing the computer to execute the method as described in Embodiment 20

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Abstract

本申请涉及一种通信方法及设备，适用于5G系统，或车联网系统，或D2D系统。第一终端设备确定第一信息，所述第一信息用于指示第一资源池的参考频域位置，所述第一资源池是配置给第一类型的终端设备的资源池，所述参考频域位置包括所述第一资源池的起始频域位置、结束频域位置、或中间频域位置中的一项或多项；第一终端设备根据所述参考频域位置以及第二信息，确定所述第一资源池的频域范围，所述第二信息包括如下一项或多项：所述第一类型的终端设备支持的带宽，一个子信道的带宽，或，所述第一资源池占用的子信道的个数。本申请实施例可通过第一信息来为第一终端设备配置第一资源池，由此解决了为终端设备配置资源池的问题。

Description

一种通信方法及设备
相关申请的交叉引用
本申请要求在2021年08月25日提交中国国家知识产权局、申请号为202110982168.7、申请名称为“一种通信方法、终端及网络设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中；本申请要求在2021年09月30日提交中国国家知识产权局、申请号为202111165700.2、申请名称为“一种通信方法及设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种通信方法及设备。
背景技术
目前在侧行通信中，引入了混合资源池(mixed resource pool)的概念，以支持不同类型的UE在一个资源池内进行传输。为了避免资源池内各类UE互相干扰，可以考虑在该资源池中为不同类型的UE分配各自的子资源池(subpool)，这样UE可在各自的子资源池内通信，减少了UE之间的干扰。
目前尚未讨论如何为UE配置子资源池。如果沿用目前配置资源池的方式来为UE配置子资源池，那么配置信息所包括的内容较多，信令开销较大。
发明内容
本申请实施例提供一种通信方法及设备，用于在为UE配置资源池时减小信令开销。
第一方面，提供第一种通信方法，该方法可由终端设备执行，或由包括终端设备的更大设备执行，或由芯片系统或其他功能模块执行，该芯片系统或功能模块能够实现终端设备的功能，该芯片系统或功能模块例如设置在终端设备中。该终端设备例如称为第一终端设备，第一终端设备例如为第一类型的终端设备。该方法包括：确定第一信息，所述第一信息用于指示第一资源池的参考频域位置，所述第一资源池是配置给第一类型的终端设备的资源池，所述参考频域位置包括所述第一资源池的起始频域位置、结束频域位置、或中间频域位置中的一项或多项；根据所述参考频域位置以及第二信息，确定所述第一资源池的频域范围，所述第二信息包括如下一项或多项：所述第一类型的终端设备支持的带宽，一个子信道的带宽，或，所述第一资源池占用的子信道的个数。其中，第一资源池是配置给第一类型的终端设备的资源池，第一类型的终端设备可在第一资源池内工作。第一类型的终端设备在第一资源池内工作可理解为，第一类型的终端设备可在第一资源池中监听物理侧行控制信道(physical sidelink control channel，PSCCH)，可在第一资源池中接收PSCCH，也可在第一资源池中选择资源以发送信息。
本申请实施例可通过第一信息来为第一终端设备配置第一资源池，第一资源池例如为混合资源池内的子资源池(也可称为第一子资源池)，或者第一资源池也可以不是子资源池，而是独立的资源池，由此解决了为终端设备配置资源池或子资源池的问题。且第一信 息可以配置第一资源池的参考频域位置，第一终端设备根据该参考频域位置，以及根据第二信息就能确定第一资源池的频域位置，也就是说，第一信息无需包括过多的内容，例如第一信息由网络设备发送，则由于第一信息包括的内容较少，因此能够节省传输开销。
结合第一方面，在第一方面的第一种可选的实施方式中，所述参考频域位置为侧行同步信号所在的子信道的频域位置；或，所述参考频域位置为侧行同步信号所在的频率最低的子载波的频域位置；或，所述参考频域位置为侧行同步信号所在的频率最高的子载波的频域位置；或，所述参考频域位置为侧行同步信号所占用的第一子载波的频域位置。参考频域位置可能有多种，例如参考频域位置与侧行同步信号有关，使得第一资源池的位置能够更好地定位。
结合第一方面的第一种可选的实施方式，在第一方面的第二种可选的实施方式中，所述第一子载波为第66个子载波或第67个子载波。第一子载波例如为侧行同步信号所占用的子载波中，在频域上位于中间的子载波，例如侧行同步信号占用132个子载波，那么第一子载波例如为其中的第66个或第67个子载波。如果侧行同步信号占用的子载波的个数有变化，那么第一子载波也可以相应改变。
结合第一方面或第一方面的第一种可选的实施方式或第一方面的第二种可选的实施方式，在第一方面的第三种可选的实施方式中，所述第一资源池的频域范围包括侧行同步信号的频域位置。在侧行通信的场景中，侧行同步信号由终端设备发送，侧行同步信号所在的频域位置相对固定。各类终端设备都需要监听侧行同步信号，否则可能无法同步到优先级最高的同步源上。如果分配给终端设备的资源池不包括侧行同步信号的频域位置，则终端设备还需要切换到侧行同步信号所在的频域位置来监听侧行同步信号，对于终端设备来说实现较为复杂，且功耗较大。鉴于此，本申请实施例提出，分配给第一终端设备的第一资源池的频域范围可包括侧行同步信号的频域范围(或者说，包括侧行同步信号的频域位置)，这样第一终端设备无需切换工作频率就能监听侧行同步信号，简化了终端设备的工作过程，且能够减小功耗。
结合第一方面或第一方面的第一种可选的实施方式至第一方面的第三种可选的实施方式中的任一种可选的实施方式，在第一方面的第四种可选的实施方式中，所述第一资源池的带宽小于或等于所述第一类型的终端设备支持的带宽。为了使得第一UE能够支持第一资源池，第一资源池的带宽可以小于或等于第一UE的带宽，从而第一UE可以通过第一资源池包括的资源传输数据。
结合第一方面或第一方面的第一种可选的实施方式至第一方面的第四种可选的实施方式中的任一种可选的实施方式，在第一方面的第五种可选的实施方式中，所述方法还包括：向网络设备发送第一请求消息，所述第一请求消息用于请求资源，所述资源用于向第二终端设备发送数据，以及，所述第一请求消息包括第二指示信息，所述第二指示信息用于指示所述第一终端设备和/或第二终端设备为第一类型的终端设备，或指示所述第一终端设备和/或第二终端设备支持的频带，或指示所述第一终端设备和/或第二终端设备支持的带宽，或者，所述第二指示信息包括所述第二终端设备的标识或索引；从所述网络设备接收第一响应消息，所述第一响应消息用于指示第一资源。通过第二指示信息使得网络设备能够获知通信双方的终端设备的能力，网络设备在为第一终端设备分配资源时能够考虑第一终端设备和/或第二终端设备的能力，从而为第一终端设备分配第一终端设备和第二终端设备都能够支持的资源，提高了终端设备之间通信的成功率。
结合第一方面或第一方面的第一种可选的实施方式至第一方面的第四种可选的实施方式中的任一种可选的实施方式，在第一方面的第六种可选的实施方式中，所述方法还包括：从第二终端设备接收第一消息，所述第一消息用于预约第一资源；如果所述第一消息不包括第三指示信息，则降低所述第一消息指示的优先级，所述第三指示信息用于指示所述第三指示信息的发送端为第一类型的终端设备；确定第一数据的优先级高于降低后的所述优先级，或确定降低后的所述优先级满足第二门限，其中，所述第一数据为待发送的数据；在所述第一资源池内发送第二消息，所述第二消息用于预约所述第一资源。通过降低第一消息所指示的优先级，可尽量保证第一类型的终端设备使用第一资源池内的资源。但如果在第一消息所指示的优先级被降低后仍然低于第一数据的优先级，或不满足门限，则非第一类型的终端设备就可以抢占第一资源池内的资源，以尽量保证较高优先级的数据的发送。且非第一类型的终端设备也是在第一资源池内发送抢占消息，使得第一类型的终端设备能够监听到该抢占消息，从而减少资源碰撞。
第二方面，提供第二种通信方法，该方法可由终端设备执行，或由包括终端设备的更大设备执行，或由芯片系统或其他功能模块执行，该芯片系统或功能模块能够实现终端设备的功能，该芯片系统或功能模块例如设置在终端设备中。该终端设备例如称为第一终端设备。该方法包括：发送M个消息，所述M个消息中的N个消息所预约的资源位于第一资源池内，所述N个消息中有至少一个消息的频域位置位于所述第一资源池内，M和N均为正整数，且N小于或等于M。通过本申请实施例，令用于预约第一资源池内的资源的消息在第一资源池内发送，使得第一类型的UE能够监听到消息，减小资源碰撞的概率，也能尽量保证预约机制的有效性。
第三方面，提供第三种通信方法，该方法可由终端设备执行，或由包括终端设备的更大设备执行，或由芯片系统或其他功能模块执行，该芯片系统或功能模块能够实现终端设备的功能，该芯片系统或功能模块例如设置在终端设备中。该终端设备例如称为第一终端设备。该方法包括：发送消息，所述消息用于预约资源，所述消息的频域位置位于第一资源池外，所述消息所预约的资源不包括所述第一资源池内的资源，所述第一资源池为第一类型的终端设备使用的资源池。如果用于预约资源的消息在第一资源池外发送，则该消息不能预约第一资源池内的资源，从而减小了资源碰撞的概率。
第四方面，提供第四种通信方法，该方法可由终端设备执行，或由包括终端设备的更大设备执行，或由芯片系统或其他功能模块执行，该芯片系统或功能模块能够实现终端设备的功能，该芯片系统或功能模块例如设置在终端设备中。该终端设备例如称为第一终端设备。该方法包括：从第二终端设备接收第一消息，所述第一消息用于预约第一资源，以及，所述第一消息包括第三指示信息，所述第三指示信息用于指示所述第二终端设备为第一类型的终端设备；提高所述第一消息指示的优先级；确定第一数据的优先级高于提高后的所述优先级，或确定提高后的所述优先级满足第一门限，其中，所述第一数据为待通过所述第二消息所预约的所述第一资源发送的数据；在第一资源池内发送第二消息，所述第二消息用于预约所述第一资源，所述第一资源池为所述第一类型的终端设备使用的资源池。通过提高第一消息所指示的优先级，可尽量保证第一类型的终端设备使用第一资源池内的资源。但如果在第一消息所指示的优先级被提高后仍然低于第一数据的优先级，或不满足门限，则非第一类型的终端设备就可以抢占第一资源池内的资源，以尽量保证较高优先级的数据的发送。且非第一类型的终端设备也是在第一资源池内发送抢占消息，使得第一类 型的终端设备能够监听到该抢占消息，从而减少资源碰撞。
第五方面，提供第五种通信方法，该方法可由终端设备执行，或由包括终端设备的更大设备执行，或由芯片系统或其他功能模块执行，该芯片系统或功能模块能够实现终端设备的功能，该芯片系统或功能模块例如设置在终端设备中。该终端设备例如称为第一终端设备。该方法包括：降低第一数据的优先级；发送消息，所述消息用于为所述第一数据预约资源，所述资源的频域位置位于第一资源池内，所述第一终端设备为第二类型的终端设备，所述第一资源池为第一类型的终端设备使用的资源池。非第一类型的终端设备如果要预约第一资源池内的资源，则可以降低该终端设备所要发送的数据的优先级，以在尽量保证第一资源池内的资源供第一类型的终端设备使用的前提下，提高第一子资源池内的资源的利用率。而且用于预约资源的消息在第一资源池内发送，也能减少碰撞，保证预约机制的有效性。
第六方面，提供第六种通信方法，该方法可由终端设备执行，或由包括终端设备的更大设备执行，或由芯片系统或其他功能模块执行，该芯片系统或功能模块能够实现终端设备的功能，该芯片系统或功能模块例如设置在终端设备中。该终端设备例如称为第一终端设备。该方法包括：发送第一消息，所述第一消息用于预约第一资源，所述第一资源的频域位置位于第一资源池内，所述第一终端设备为第二类型的终端设备，所述第一资源池为第一类型的终端设备使用的资源池；从第二终端设备接收第二消息，所述第二消息用于预约第二资源，所述第二消息包括第三指示信息，所述第三指示信息用于指示所述第二终端设备为所述第一类型的终端设备；如果所述第一资源与所述第二资源有交集，不在所述第一资源与所述第二资源的交集资源上发送数据，或，不在所述第一资源上发送数据。通过本申请实施例提供的方案，可以尽量保证第一类型的UE使用第一子资源池内的资源，且能减少资源碰撞，提高预约机制的有效性。
第七方面，提供一种通信装置。所述通信装置可以为上述第一方面至第六方面的任一方面所述的第一终端设备。所述通信装置具备上述第一终端设备的功能。所述通信装置例如为第一终端设备，或为第一终端设备中的功能模块，例如基带装置或芯片系统等。一种可选的实现方式中，所述通信装置包括基带装置和射频装置。另一种可选的实现方式中，所述通信装置包括处理单元(有时也称为处理模块)和收发单元(有时也称为收发模块)。收发单元能够实现发送功能和接收功能，在收发单元实现发送功能时，可称为发送单元(有时也称为发送模块)，在收发单元实现接收功能时，可称为接收单元(有时也称为接收模块)。发送单元和接收单元可以是同一个功能模块，该功能模块称为收发单元，该功能模块能实现发送功能和接收功能；或者，发送单元和接收单元可以是不同的功能模块，收发单元是对这些功能模块的统称。
在一种可选的实现方式中，所述通信装置还包括存储单元，所述处理单元用于与所述存储单元耦合，并执行所述存储单元中的程序或指令，使能所述通信装置执行上述第一方面至第六方面的任一方面所述的第一终端设备的功能。
第八方面，提供一种计算机可读存储介质，所述计算机可读存储介质用于存储计算机程序或指令，当其被运行时，使得上述各方面中第一终端设备所执行的方法被实现。
第九方面，提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得上述各方面所述的方法被实现。
第十方面，提供一种装置，包含用于执行本申请任一实施例所述方法的一个或多个单 元。
附图说明
图1为本申请实施例的一种应用场景示意图；
图2为本申请实施例提供的第一种通信方法的流程图；
图3为本申请实施例中第一子资源池与侧行同步信号的频域位置的示意图；
图4为本申请实施例的又一种应用场景示意图；
图5为本申请实施例提供的第二种通信方法的流程图；
图6为本申请实施例提供的第三种通信方法的流程图；
图7为发送端UE选择资源的示意图；
图8为本申请实施例的再一种应用场景示意图；
图9为本申请实施例提供的第四种通信方法的流程图；
图10为本申请实施例中位于第一子资源池外的消息不能预约第一子资源池内的资源的一种示意图；
图11为本申请实施例提供的第五种通信方法的流程图；
图12为本申请实施例中位于第一子资源池外的消息不能抢占第一子资源池内的资源的一种示意图；
图13为本申请实施例提供的第六种通信方法的流程图；
图14为本申请实施例提供的第七种通信方法的流程图；
图15为本申请实施例提供的第八种通信方法的流程图；
图16为本申请实施例提供的一种通信装置的结构示意图；
图17为本申请实施例提供的一种终端设备的结构示意图。
具体实施方式
为了使本申请实施例的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施例作进一步地详细描述。
以下，对本申请实施例中的部分用语或概念进行解释说明，以便于本领域技术人员理解。
本申请实施例中，终端设备是一种具有无线收发功能的设备，可以是固定设备，移动设备、手持设备(例如手机)、穿戴设备、车载设备，或内置于上述设备中的无线装置(例如，通信模块，调制解调器，或芯片系统等)。所述终端设备用于连接人，物，机器等，可广泛用于各种场景，例如包括但不限于以下场景：蜂窝通信、设备到设备通信
(device-to-device，D2D)、车到一切(vehicle to everything，V2X)、机器到机器/机器类通信(machine-to-machine/machine-type communications，M2M/MTC)、物联网(internet of things，IoT)、虚拟现实(virtual reality，VR)、增强现实(augmented reality，AR)、工业控制(industrial control)、无人驾驶(self driving)、远程医疗(remote medical)、智能电网(smart grid)、智能家具、智能办公、智能穿戴、智能交通，智慧城市(smart city)、无人机、机器人等场景的终端设备。所述终端设备有时可称为用户设备(user equipment，UE)、终端、接入站、UE站、远方站、无线通信设备、或用户装置等等。为描述方便，本申请 实施例中将终端设备以UE为例进行说明。
目前，为UE配置的资源池最大可支持40MHz。为了支持资源池的最大带宽，UE支持的带宽一般在40MHz以上。而还有一些通信场景，例如智能手表或智能耳机等UE的通信场景中，由于通信的数据量较小，也有降低成本的需求，从而出现了所支持的最大带宽为20MHz或10MHz或更小的UE(例如智能手表或智能耳机等就是此类UE)。通过减少UE所支持的最大带宽，能够相应减小UE的成本。而这种UE可称为带宽有限(bandwidth limited)的UE，或者能力受限的UE，或者灵活带宽(flexible bandwidth)的UE。
带宽有限的UE可能工作在不同的频段(band)上，且带宽有限的UE一般支持的带宽小于或等于20MHz。例如带宽有限的UE工作在某个频段上，则该UE一般占用该频段的低10MHz或低20MHz的带宽。例如请参考表1，为NR系统中的一些工作频段(operating band)的示例。
表1
n1 1920MHz–1980MHz 2110MHz–2170MHz FDD
n2 1850MHz–1910MHz 1930MHz–1990MHz FDD
n3 1710MHz–1785MHz 1805MHz–1880MHz FDD
n5 824MHz–849MHz 869MHz–894MHz FDD
n7 2500MHz–2570MHz 2620MHz–2690MHz FDD
n8 880MHz–915MHz 925MHz–960MHz FDD
表1中，n1,n2,……分别表示不同的工作频段，其中每个工作频段包括上行频段和下行频段，表1中的第二列表示上行频段，第三列表示下行频段。另外，表1中的第四列表示该频段所应用的双工模式(duplex mode)，例如表1中的各个频段均应用于频分双工(frequency division duplexing，FDD)模式。其中，带宽有限的UE一般工作在上行频段，例如带宽有限的UE可工作在表1所示的一个或多个上行频段上。例如一个带宽有限的UE工作在表1所示的n1对应的上行频段上，则该UE可能占用该上行频段的低10MHz，即，该UE所在的频带为1920MHz～1930MHz；或者，该UE可能占用该上行频段的低20MHz，即，该UE所在的频带为1920MHz～1940MHz。需要注意的是，工作频段还可能有多个，表1只是以其中一部分为示例。
例如，本申请实施例关注的一类带宽有限的UE为能力缩减UE(reduced capability UE，RedCap UE)。之所以称为RedCap UE，是因为与现有的普通NR UE相比，RedCap UE通常只支持更低的带宽，例如20MHz，且支持更少的收发天线数，例如只支持1T1R(即，1发1收，可理解为，一根发送天线以及一根接收天线)或者1T2R(即，1发2收，可理解为，一根发送天线以及两根接收天线)。由于支持的带宽减小，支持的天线数也减少，因此此类UE的能力受限。例如由于支持的带宽减小，此类UE能够调用的资源减少；由于支持的天线数减少，此类UE收发数据的能力有限。按照现有课题的研究内容，RedCap UE可以包括以下各类UE中的一种或多种：可穿戴产品、视频监控设备、智能车相关设备(例如智能车本身和/或车载装置等)和工业传感器设备。
本申请实施例中的网络设备，例如可以包括接入网设备，和/或核心网设备。所述接入网设备为具有无线收发功能的设备，用于与所述终端设备进行通信。所述接入网设备包括但不限于上述通信系统中的基站(BTS，Node B,eNodeB/eNB，或gNodeB/gNB)、收发点 (transmission reception point，TRP)，第三代合作伙伴计划(3rd generation partnership project，3GPP)后续演进的基站，无线保真(wireless fidelity，Wi-Fi)系统中的接入节点，无线中继节点，无线回传节点等。所述基站可以是：宏基站，微基站，微微基站，小站，中继站等。多个基站可以支持同一种接入技术的网络，也可以支持不同接入技术的网络。基站可以包含一个或多个共站或非共站的传输接收点。所述接入网设备还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器、集中单元(centralized unit，CU)，和/或分布单元(distributed unit，DU)。所述接入网设备还可以是服务器等。例如，车到一切(vehicle to everything，V2X)技术中的网络设备可以为路侧单元(road side unit，RSU)。以下对接入网设备以为基站为例进行说明。基站可以与终端设备进行通信，也可以通过中继站与终端设备进行通信。终端设备可以与不同接入技术中的多个基站进行通信。所述核心网设备用于实现移动管理，数据处理，会话管理，策略和计费等功能。不同接入技术的系统中实现核心网功能的设备名称可以不同，本申请实施例并不对此进行限定。以5G系统为例，所述核心网设备包括：访问和移动管理功能(access and mobility management function，AMF)、会话管理功能(session management function，SMF)、策略控制功能(policy control function，PCF)或用户面功能(user plane function，UPF)等。
本申请实施例中，用于实现网络设备功能的通信装置可以是网络设备，也可以是能够支持网络设备实现该功能的装置，例如芯片系统，该装置可以被安装在网络设备中。在本申请实施例提供的技术方案中，以用于实现网络设备的功能的装置是网络设备为例，描述本申请实施例提供的技术方案。
本申请实施例中，对于名词的数目，除非特别说明，表示“单数名词或复数名词”，即"一个或多个”。“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。例如，A/B，表示：A或B。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，表示：a,b,c,a和b,a和c,b和c,或a和b和c，其中a,b,c可以是单个，也可以是多个。
本申请实施例提及“第一”、“第二”等序数词是用于对多个对象进行区分，不用于限定多个对象的大小、内容、顺序、时序、优先级或者重要程度等。例如，第一信息和第二信息，可以是同一个信息，也可以是不同的信息，且，这种名称也并不是表示这两个信息的大小、内容、优先级或者重要程度等的不同。另外，本申请所介绍的各个实施例中对于步骤的编号，只是为了区分不同的步骤，并不用于限定步骤之间的先后顺序。例如，步骤S201可以发生在步骤S202之前，或者可能发生在S202之后，或者也可能与S202同时发生。
本申请实施例可通过第一信息来为第一终端设备配置第一资源池，第一资源池例如为混合资源池内的子资源池(也可称为第一子资源池)，或者第一资源池也可以不是子资源池，而是独立的资源池，由此解决了为终端设备配置资源池或子资源池的问题。且第一信息可以配置第一资源池的参考频域位置，第一终端设备根据该参考频域位置，以及根据第二信息就能确定第一资源池的频域位置，例如第一信息由网络设备发送，则由于第一信息包括的内容较少，因此能够节省传输开销。
本申请实施例提供的技术方案可以应用于第四代移动通信技术(the 4th generation，4G) 系统中，例如长期演进(long term evolution，LTE)系统，或可以应用于5G系统中，例如新无线(new radio，NR)系统，或者还可以应用于下一代移动通信系统或其他类似的通信系统，具体的不做限制。另外本申请实施例提供的技术方案可以应用于设备到设备(device-to-device，D2D)场景，例如NR-D2D场景等，或者可以应用于车到一切(vehicle to everything，V2X)场景，例如NR-V2X场景等。例如可应用于车联网，例如V2X、车与车(vehicle-to-vehicle，V2V)等，或可用于智能驾驶、辅助驾驶、或智能网联车等领域；又例如可应用于扩展现实(extended reality，XR)或投屏等场景。
请参考图1，为本申请实施例的一种应用场景的示意图。图1包括网络设备和UE，网络设备与UE能够通信。例如网络设备可以向UE发送第一信息，从而为该UE配置资源池。或者，第一信息也可以不由网络设备发送，UE通过其他方式获得第一信息，那么图1中的网络设备就不是必要的设备，可以存在也可以不存在。且如果第一信息不由网络设备发送，那么UE可以处于网络设备的覆盖范围内，也可以处于网络设备的覆盖范围外。
图1中的网络设备例如为接入网设备，接入网设备例如为基站。其中，接入网设备在不同的系统对应不同的设备，例如在4G系统中可以对应eNB，在5G系统中对应5G中的接入网设备，例如gNB。当然本申请实施例所提供的技术方案也可以应用于未来的移动通信系统中，因此图1中的接入网设备也可以对应未来的移动通信系统中的网络设备。本申请实施例以接入网设备是基站为例，实际上参考前文的介绍，接入网设备还可以是RSU等设备。
下面结合附图介绍本申请实施例所提供的方法。在本申请的各个实施例对应的附图中，凡是可选的步骤均用虚线表示。可选的，本申请的各个实施例所涉及的“资源池”或“子资源池”，其所包括的资源可以是用于侧行通信的资源；同理可选的，本申请的各个实施例所述的“资源”，也可以是指用于侧行通信的资源。
本申请实施例提供第一种通信方法，请参见图2，为该方法的流程图。该方法可应用于图1所示的网络架构，例如该方法所涉及的第一UE即为图1中的UE，该方法所涉及的网络设备即为图1中的网络设备。
S201、第一UE确定第一信息，第一信息用于配置第一资源池的参考频域位置。第一资源池的参考频域位置例如包括第一资源池的起始频域位置、结束频域位置或中间频域位置中的一项或多项。
例如存在混合资源池，可支持不同类型的UE均在该混合资源池内进行传输。为了避免混合资源池内各类UE互相干扰，可以在该混合资源池中为不同类型的UE分配各自的子资源池，这样UE可在各自的子资源池内通信，减少了UE之间的干扰。第一资源池位于该混合资源池内，例如第一资源池是分配给第一类型的UE的子资源池，第一UE的类型如果是第一类型，则第一UE可以使用第一资源池。在这种情况下，第一资源池也可以称为第一子资源池。例如混合资源池的带宽为40MHz，完全感知UE、部分感知UE和RedCap UE等类型的UE均可以使用该混合资源池。例如该混合资源池中，0～20MHz的带宽配置为完全感知UE使用的子资源池，10MHz～30MHz的带宽配置为部分感知UE使用的子资源池，30MHz～40MHz的带宽配置为RedCap UE使用的子资源池。
或者，第一资源池并不是混合资源池内的子资源池，而是独立的资源池。在本申请的各个实施例中，以第一资源池是第一子资源池为例来介绍，也就是说，后文所述的“第一子资源池”均可替换为“第一资源池”。第一类型例如为带宽有限(或，带宽受限)类型，或者 为其他类型。例如一种带宽有限的UE为RedCap UE。
可选的，第一信息还可包括第一指示信息，或者，第一指示信息也可以不包括在第一信息中，而是通过另外的消息发送。第一指示信息例如指示第一子资源池所适用的UE的类型，即，指示第一子资源池适用于何种类型的UE。或者，第一指示信息指示该参考频域位置适用的UE的类型，或者第一指示信息直接指示适用的UE的类型。例如，第一指示信息包括所适用的UE的类型的标识，就相当于指示了UE的类型。例如第一子资源池是配置给第一类型的UE使用，第一类型例如为RedCap UE，那么第一指示信息可指示第一子资源池适用于RedCap UE。获得该第一信息的UE根据第一指示信息以及该UE的类型，就能确定该UE是否能够使用第一子资源池。或者，第一指示信息也可以指示第一子资源池所适用的UE的带宽，即，指示第一子资源池适用于支持何种带宽的UE。例如第一指示信息指示第一子资源池适用于支持10MHz带宽的UE，或指示第一子资源池适用于支持20MHz带宽的UE等。获得该第一信息的UE根据第一指示信息以及该UE的带宽，就能确定该UE是否能够使用第一子资源池。
第一信息例如由网络设备发送，那么第一UE确定第一信息的方式例如为，网络设备向第一UE发送第一信息，相应的，第一UE从网络设备接收第一信息，这样第一UE就确定了第一信息。或者，第一信息也可以预配置在第一UE中，则第一UE可以获得预配置的第一信息。或者，第一信息也可以通过协议预定义等，则第一UE可根据协议确定第一信息。
考虑一个问题。在侧行通信的场景中，侧行同步信号由UE发送，侧行同步信号所在的频域位置相对固定。各类UE都需要监听侧行同步信号，否则可能无法同步到优先级最高的同步源上。如果分配给UE的子资源池不包括侧行同步信号的频域位置，则UE还需要切换到侧行同步信号所在的频域位置来监听侧行同步信号，对于UE来说实现较为复杂，且功耗较大。鉴于此，本申请实施例提出，分配给第一UE的第一子资源池的频域范围可包括侧行同步信号的频域范围(或者说，包括侧行同步信号的频域位置)，这样UE无需切换工作频率，简化了UE的工作过程，且能够减小功耗。例如，侧行同步信号在频域上占用132个子载波(例如侧行同步信号为侧行同步信号块(sidelink synchronization signal block，S-SSB)，侧行绝对频率SSB版本16(sl-AbsoluteFrequencySSB-r16)这一参数可指示S-SSB占用的中间子载波，例如指示S-SSB占用的第66个子载波，那么根据该参数就能确定S-SSB所占用的132个子载波)，也就是说，侧行同步信号的频域范围包括这132个子载波，则第一子资源池的频域范围可包括这132个子载波。可参考图3，为第一子资源池与侧行同步信号的频域位置的示意图，图3中的虚线框表示侧行同步信号的频域位置。在图3中，第一子资源池包括在混合资源池内，侧行同步信号的频域位置位于第一子资源池的频域范围内。
为了使得第一子资源池的频域范围包括侧行同步信号的频域位置，在设计参考频域位置时就可以考虑侧行同步信号的频域位置。作为参考频域位置的一种可选的实施方式，该参考频域位置所包括的全部或部分频域位置为侧行同步信号所在的子信道的频域位置。侧行同步信号可能占用一个或多个子信道，如果侧行同步信号占用一个子信道，那么该参考频域位置可以包括该子信道的频域位置。如果侧行同步信号占用多个子信道，那么，如果该参考频域位置包括一个频域位置，则该参考频域位置可以是这多个子信道中频率最低的子信道的频域位置，或者是这多个子信道中频率最高的子信道的频域位置，或者是这多个 子信道中频率位于中间的子信道的频域位置，或者也可以是这多个子信道中任一个子信道的频域位置；或者，如果该参考频域位置包括多个频域位置(例如参考频域位置包括第一子资源池的起始频域位置和结束频域位置等)，则该参考频域位置可以包括这多个子信道中的部分或全部子信道的频域位置，例如该参考频域位置包括第一子资源池的起始频域位置和结束频域位置，其中第一子资源池的起始频域位置为这多个子信道中频率最低的子信道的频域位置，而第一子资源池的结束频域位置不是侧行同步信号所在的子信道的频域位置，而是其他频域位置，或者，第一子资源池的结束频域位置是这多个子信道中频率最高的子信道的频域位置。
如果参考频域位置为侧行同步信号所在的子信道的频域位置，那么第一信息指示参考频域位置，一种指示方式为，第一信息可指示(或，包括)参考频域位置所在的子信道的子信道标号，通过子信道标号就能指示相应的子信道。例如，参考频域位置包括侧行同步信号占用的多个子信道中的频率最低的子信道的频域位置，那么第一信息可指示(或，包括)该频率最低的子信道的子信道标号。
作为参考频域位置的另一种可选的实施方式，该参考频域位置所包括的部分或全部频域位置为侧行同步信号所在的第一子载波的频域位置，第一子载波例如为侧行同步信号占用的子载波中频率最低的子载波，或者为侧行同步信号占用的子载波中频率最高的子载波，或者为侧行同步信号占用的子载波中频率位于中间的子载波(例如，侧行同步信号共占用132个子载波，第一子载波可以是指其中的第66个子载波或第67个子载波)，或者也可以是侧行同步信号占用的子载波中的任一个子载波。
本申请实施例中，侧行同步信号例如为S-SSB，或者也可以是其他的用于侧行同步的信号。
可选的，第一信息除了包括参考频域位置外，还包括用于配置第一子资源池的其他信息。例如第一信息还包括第一子资源池占用的子信道的个数，从而第一UE根据参考频域位置和第一子资源池占用的子信道的个数就能确定第一子资源池的频域位置。这种第一信息包括的内容较为完善，第一UE根据第一信息就能确定第一子资源池的频域位置，无需再考虑其他信息。或者，第一信息只是包括参考频域位置，不再包括其他信息。第一UE可结合第一信息以及其他信息来确定第一子资源池的频域位置。这种第一信息包括的内容较少，如果第一信息由网络设备发送，则可以节省传输开销。
S202、第一UE根据参考频域位置以及第二信息，确定第一子资源池的频域范围。第二信息可包括或指示如下一项或多项：第一UE支持的带宽，一个子信道的带宽，或，第一子资源池占用的子信道的个数。
例如，如果第二信息包括一项，则第二信息的确定方式例如为：方式1、包括在第一信息中；方式2、预配置在第一UE；方式3、通过协议预定义。或者，如果第二信息包括多项，则这多项可以采用同种方式确定，例如这多项均包括在第一信息中，或者这多项均预配置在第一UE中，或者这多项均通过协议预定义。或者，如果第二信息包括多项，则这多项可以通过多种方式确定。例如，第二信息包括第一UE支持的带宽、一个子信道的带宽、以及第一子资源池占用的子信道的个数，这三项中的任意两项可以通过方式1确定，剩余一项可通过方式2确定。又例如，第二信息包括第一UE支持的带宽、一个子信道的带宽、以及第一子资源池占用的子信道的个数，这三项中的不同项采用不同的方式确定，例如这三项中的第一项可通过方式3确定，这三项中的第二项可通过方式1确定，这三项 中的第三项可通过方式2确定。
例如，第二信息包括第一数量，第一数量为第一子资源池占用的子信道的个数。参考频域位置例如为第一子资源池的起始频域位置，那么第一UE确定从该起始频域位置开始直到第一数量个子信道的结束频域位置，这之间的范围就是第一子资源池的频域范围。
又例如，第二信息包括第一UE支持的带宽，以及一个子信道的大小。参考频域位置例如为第一子资源池的起始频域位置，那么第一UE根据第一UE支持的带宽以及一个子信道的大小，能够确定第一子资源池可占用的子信道的个数，再根据参考频域位置和第一子资源池占用的子信道的个数，就确定了第一子资源池的大小。例如，子载波间隔为15kHz，一个子信道的大小为10个资源块(resource block，RB)，即1.8MHz，第一UE支持的带宽为20MHz，第一UE确定第一子资源池占用的子信道的总带宽需要小于或等于20MHz，按照一个子信道的大小，11个子信道的总带宽为19.8MHz，而12个子信道的总带宽为21.6MHz，显然第一子资源池最多占用11个子信道，因此则第一UE确定第一子资源池占用11个子信道。参考频域位置例如为第一子资源池的起始频域位置，该起始频域位置例如通过子信道标号指示，那么第一UE确定从该子信道标号指示的子信道开始的11个子信道为第一子资源池的频域范围。需要注意的是，由于第一UE支持的带宽除以一个子信道的大小所得到的取值不一定是整数，因此第一子资源池占用的子信道不一定能够占满第一UE支持的全部带宽，也就是说，第一子资源池的频域范围可能是第一UE支持的部分带宽。
当参考频域位置不同时，第一子资源池的频域范围也不同。例如第一UE确定了第一子资源池占用的子信道的个数，参考频域位置是第一子资源池的起始频域位置，那么参考频域位置可以是第一子资源池中频率最低的频域位置，第一UE从该参考频域位置开始，按照第一子资源池占用的子信道的个数向高频方向确定第一子资源池的频域范围。或者，参考频域位置是第一子资源池的结束频域位置，那么参考频域位置可以是第一子资源池中频率最高的频域位置，第一UE从该参考频域位置开始，按照第一子资源池占用的子信道的个数向低频方向确定第一子资源池的频域范围。或者，参考频域位置是第一子资源池的中间频域位置，第一UE从该参考频域位置开始，按照第一子资源池占用的子信道的个数分别向高频方向和低频方向确定第一子资源池的频域范围。
如果第一子资源池的带宽大于第一UE支持的带宽，那么对于第一子资源池的带宽超出第一UE所支持的带宽的这部分资源，第一UE无法使用，例如第一UE既无法在这些资源上监听，也无法在这些资源上发送数据。因此为了使得第一UE能够支持第一子资源池，可选的，第一子资源池的带宽可以小于或等于第一UE的带宽，从而第一UE可以通过第一子资源池包括的资源传输数据。
在确定第一子资源池的频域范围后，第一UE就能够在第一子资源池中选择资源以与其他UE通信。
本申请实施例可通过第一信息来为第一终端设备配置第一资源池，第一资源池例如为混合资源池内的子资源池(也可称为第一子资源池)，或者第一资源池也可以不是子资源池，而是独立的资源池，由此解决了为终端设备配置资源池或子资源池的问题。且第一信息可以配置第一资源池的参考频域位置，第一终端设备根据该参考频域位置，以及根据第二信息就能确定第一资源池的频域位置，例如第一信息由网络设备发送，则由于第一信息包括的内容较少，因此能够节省传输开销。
在NR-V2X中引入了两种资源选择机制，分别是模式(mode)1和mode 2。其中mode  1是基站分配资源的机制，mode 2是UE自选资源的机制。在mode 1中，发送端UE(Tx UE)在向接收端UE(Rx UE)发送消息之前，需要先向网络设备申请资源，由网络设备分配资源给Tx UE，Tx UE再通过分配的资源向Rx UE发送消息。需要通信的发送端UE和接收端UE，可能其中一个UE的能力较低，或者这两个UE的能力都较低。但网络设备分配资源时可能并不知道UE的能力，如果这两个UE中有至少一个UE的能力较低，而网络设备分配了能力较低的UE无法支持的资源(例如基站分配的资源位于能力较低的UE支持的子资源池外)，则可能导致这两个UE的通信失败。
鉴于此，本申请实施例提供第二种通信方法，通过该方法，可以使得网络设备为UE分配合适的资源。
请参考图4，为本申请实施例的一种应用场景的示意图。图4包括网络设备、发送端UE和接收端UE，网络设备与发送端UE能够通信，发送端UE可以向网络设备请求资源，从而能够为发送端UE分配资源。网络设备与接收端UE也能够通信，即，接收端UE可以处于网络设备的覆盖范围内，或者，网络设备与接收端UE也可能无法通信，即，接收端UE处于网络设备的覆盖范围外。图4中的网络设备例如为接入网设备，关于接入网设备的介绍可参考前文。
请参考图5，为该方法的流程图。图5所示的实施例可应用于图4所示的场景，例如，图5所示的实施例涉及的第一UE为图4中的发送端UE，图5所示的实施例涉及的第二UE为图4中的接收端UE。
S501、第一UE向网络设备发送第一请求消息。相应的，网络设备从第一UE接收第一请求消息。第一请求消息可用于请求资源，该资源是用于第一UE向第二UE发送数据。相当于，在第一UE向第二UE发送数据之前，需要先向网络设备请求资源，则第一UE可向网络设备发送第一请求消息。第一请求消息例如为缓存状态报告(buffer status report，BSR)，或者也可以是其他的用于请求资源的消息。
第一请求消息除了用于请求资源外，还可包括第二指示信息。可理解为，第一请求消息包括两个字段，这两个字段中的一个字段承载用于请求资源的信息，这两个字段中的另一个字段承载第二指示信息。或者，用于请求资源的信息和第二指示信息也可以承载在第一请求消息包括的一个字段中。或者，第一请求消息也可以不包括用于请求资源的信息，只要发送第一请求消息就表明用于请求资源，第一请求消息会包括第二指示信息。或者，用于请求不同资源的请求消息通过不同的资源承载。例如网络设备预先针对不同的资源池配置不同的资源，用于请求RedCap资源的请求消息与用于请求非RedCap资源的请求消息会承载在不同的资源上，那么网络设备根据承载请求消息的资源就能确定该请求消息是用于请求何种类型的资源。例如第一请求消息承载在资源A上，资源A是配置给用于请求RedCap资源的请求消息使用的，从而网络设备根据资源A能够确定第一请求消息所请求的是RedCap资源。如果是这种情况，则承载请求消息的资源就可视为第二指示信息，那么不能认为是第一请求消息包括第二指示信息，而是第一请求消息与第二指示信息对应。其中，RedCap资源是指RedCap UE所使用的资源池内的资源，非RedCap资源是指非RedCap UE所使用的资源池内的资源。
如果第一请求消息包括第二指示信息，那么第二指示信息例如指示第一UE的能力和/或第二UE的能力。第二指示信息要指示一个UE的能力，例如通过指示该UE的类型来实现。例如，第二指示信息指示第一UE和/或第二UE为第一类型的UE，下文都以第一 类型的UE是RedCap UE为例。第一UE知晓第一UE是否为RedCap UE，另外，第一UE还可以事先确定第二UE是否为RedCap UE，例如第一UE可从第一UE的高层(例如MAC层或应用层等)获取第二UE的能力信息，或者，第一UE可以在与第二UE的通信过程中获取第二UE的能力信息，例如第一UE可以在与第二UE建立侧行连接时获取第二UE的能力信息，或者第一UE也可以在与第二UE的侧行连接建立成功后获取第二UE的能力信息，从而第一UE能够确定第二UE是否为RedCap UE，或者第一UE也可以通过其他方式获得第二UE的能力信息。在这种指示方式中，如果第一UE和第二UE都不是RedCap UE，则第一请求消息可不包括第二指示信息，网络设备根据第一请求消息不包括第二指示信息就能确定第一UE和第二UE均为非RedCap UE；或者，第一请求消息可以继续包括第二指示信息，第二指示信息可指示第一UE和第二UE均为非RedCap UE，网络设备根据第二指示信息可确定第一UE和第二UE均为非RedCap UE。
或者，第二指示信息要指示一个UE的能力，也可以通过指示该UE的频带来实现。例如，第二指示信息指示第一UE和/或第二UE支持的频带。例如，第一UE确定第一UE是RedCap UE，第二UE不是RedCap UE，则第二指示信息可以指示第一UE支持的频带，但不指示第二UE支持的频带，以减小第二指示信息的开销；或者第二指示信息也可以指示第一UE支持的频带以及第二UE支持的频带，这使得第一UE指示的内容更为全面。如果第一UE确定第二UE是RedCap UE，第一UE不是RedCap UE，指示方式是类似的，例如第二指示信息指示第二UE支持的频带，但不指示第一UE支持的频带，或者第二指示信息也可以指示第一UE支持的频带以及第二UE支持的频带。如果第一UE确定第二UE和第一UE都是RedCap UE，则第二指示信息也可以指示第一UE支持的频带以及第二UE支持的频带。第二指示信息指示一个UE支持的频带，例如一种指示方式为，第二指示信息指示该频带的起始频域位置和带宽，或指示该频带的结束频域位置和带宽，或指示该频带的起始频域位置和结束频域位置等，或者，还可以采用其他指示方式。关于第一UE确定第二UE支持的频带的方式，可参考前文中第一UE确定第二UE的能力信息的方式。在这种指示方式中，如果第一UE和第二UE都不是RedCap UE，则第一请求消息可不包括第二指示信息，网络设备根据第一请求消息不包括第二指示信息就能确定第一UE和第二UE均为非RedCap UE；或者第一请求消息可以继续包括第二指示信息，第二指示信息继续指示第一UE和/或第二UE支持的频带，网络设备根据第二指示信息可确定第一UE和第二UE均为非RedCap UE。
或者，第二指示信息要指示一个UE的能力，还可以通过指示该UE支持的带宽来实现。例如，第二指示信息指示第一UE和/或第二UE支持的带宽。例如，第二UE确定第一UE是RedCap UE，第二UE不是RedCap UE，则第二指示信息可以指示第二UE支持的带宽，但不指示第二UE支持的带宽，以减小第二指示信息的开销；或者第二指示信息也可以指示第一UE支持的带宽以及第二UE支持的带宽，这使得第二UE指示的内容更为全面。如果第一UE确定第二UE是RedCap UE，第一UE不是RedCap UE，指示方式是类似的，例如第二指示信息指示第二UE支持的带宽，但不指示第一UE支持的带宽，或者第二指示信息也可以指示第一UE支持的带宽以及第二UE支持的带宽。如果第一UE确定第二UE和第一UE都是RedCap UE，则第二指示信息也可以指示第一UE支持的带宽以及第二UE支持的带宽。在这种指示方式中，如果第一UE和第二UE都不是RedCap UE，则第一请求消息可不包括第二指示信息，网络设备根据第一请求消息不包括第二指示信息 就能确定第一UE和第二UE均为非RedCap UE；或者第一请求消息可以继续包括第二指示信息，第二指示信息继续指示第一UE和/或第二UE支持的带宽，网络设备根据第二指示信息可确定第一UE和第二UE均为非RedCap UE。
当然如上方式也可以混合使用，例如第二指示信息可指示第一UE支持的频带，以及指示第二UE支持的带宽等，即，第二指示信息对于第一UE和第二UE可采用同一种指示方式，也可以采用不同的指示方式。
可选的，在S501之前，第一UE还可以向网络设备发送调度请求(scheduling request，SR)。例如网络设备是为不同类型的UE分配了不同的SR信道，第一UE所发送的SR信道与第二UE的能力对应。例如不同的SR信道对应UE的不同类型，第一UE所发送的SR信道与第二UE的类型对应，或者说用于指示第二UE的类型，从而网络设备根据来自第一UE的SR信道就能确定第二UE的类型，例如确定第二UE是RedCap UE或其他类型。或者，不同的SR信道对应不同的子资源池，第一UE所发送的SR信道与第一UE所请求的资源所在的子资源池对应，或者说用于指示第一UE所请求的资源所在的子资源池，从而网络设备根据来自第一UE的SR信道就能确定第一UE请求的资源所在的子资源池，例如网络设备根据来自第一UE的SR信道确定第一UE请求的是RedCap UE所使用的子资源池内的资源。
S502、网络设备向第一UE发送第一响应消息。相应的，第一UE从网络设备接收第一响应消息。第一响应消息指示第一资源。
网络设备接收第一请求消息后，可以为第一UE分配资源。根据S501的介绍可知，第二指示信息可以指示第一UE的能力和/或第二UE的能力。通过第二指示信息，网络设备在为第一UE分配资源时能够考虑第一UE和/或第二UE的能力，从而为第一UE分配第一UE和第二UE都能够支持的资源。例如第一资源的频域位置位于第一UE支持的频带内，也位于第二UE支持的频带内。举例来说，例如第一UE和/或第二UE为RedCap UE，则网络设备为第一UE分配的第一资源可位于RedCap UE所支持的频域范围内(例如分配的资源位于RedCap UE适用的子资源池内)，且分配的第一资源的带宽也是RedCap UE所支持的带宽，使得第一UE与第二UE能够正常通信。可见，通过第二指示信息使得网络设备能够获知通信双方的UE的能力，从而使得网络设备能够为UE分配合适的资源，提高了UE之间通信的成功率。
可选的，向网络设备请求资源也可由第二UE(即，接收端UE)执行。例如第一UE需要向第二UE发送数据，则第一UE可预先指示第二UE，第二UE获知即将接收数据后，可以向网络设备发送第一请求消息，以请求分配资源。如果是这种情况，则网络设备可以向第二UE发送第一响应消息。即，S501和S502也可由第二UE执行。
接下来本申请实施例提供第三种通信方法，该方法也适用于mode 1。通过该方法，也可以使得网络设备为UE分配合适的资源。请参考图6，为该方法的流程图。图6所示的实施例也可应用于图4所示的场景，例如，图6所示的实施例涉及的第一UE为图4中的发送端UE，图6所示的实施例涉及的第二UE为图4中的接收端UE。
S601、第二UE向网络设备发送第二UE的能力信息。相应的，网络设备从第二UE接收能力信息。第二UE的能力信息可指示第二UE的能力。
例如第二UE可以在随机接入成功后向网络设备发送第二UE的能力信息，或者也可以在与网络设备的通信过程中向网络设备发送第二UE的能力信息。另外，第二UE的能 力信息还可以更新，第二UE也可以向网络设备发送更新的能力信息。第二UE的能力信息例如指示如下一项或多项：第二UE的类型，第二UE支持的带宽，或，第二UE支持的频带。第二UE在向网络设备发送能力信息时，还可以一并发送第二UE的标识，第二UE的标识例如与第二UE的业务相关，或者也可能与第二UE的业务无关。第二UE的标识可以是第二UE生成的，例如随机生成，或采用其他方式生成；或者，第二UE的标识也可能是网络设备生成(例如随机生成，或采用其他方式生成)并分配给第二UE的。网络设备从第二UE接收能力信息后，可存储第二UE的标识与第二UE的能力信息，例如网络设备存储第二UE的标识与第二UE的能力信息之间的对应关系。
S602、第一UE向网络设备发送第一UE的能力信息。相应的，网络设备从第一UE接收能力信息。第一UE的能力信息可指示第一UE的能力。
其中，S601可能发生在S602之前，或者S601可能发生在S602之后，或者S601与S602也可能同时发生。关于S602的更多内容，可参考S601的介绍，实现方式是类似的。
S603、第一UE向网络设备发送第三信息。相应的，网络设备从第一UE接收第三信息。
第三信息可包括可能与第一UE通信的至少一个UE的信息，或者说，包括第一UE的至少一个接收UE的信息，至少一个接收UE例如包括第二UE。例如第一UE为车辆，该车辆在路上行驶，则该车辆能够预知可能与该车辆通信的接收UE，例如路侧装置或其他车辆等都可能是该车辆的接收UE。另外，第三信息还可能更新。例如第一UE为车辆，在该车辆处于行驶状态时，与该车辆通信的接收UE可能会发生变化，例如该车辆初始时位于第一路段，在第一路段上可能与该车辆通信的接收UE包括该车辆附近的车辆1，还包括作为路侧装置的智能路灯，此时第三信息可包括车辆1的信息以及该智能路灯的信息。过了一段时间之后，该车辆行驶到了第二路段，在第二路段，可能与该车辆通信的接收UE改变为作为路侧装置的摄像头，之前的车辆1和智能路灯不再与该车辆通信，此时第三信息就可能更新，更新后的第三信息包括该摄像头的信息，不再包括车辆1的信息以及该智能路灯的信息如果第三信息有更新，第一UE还可以在第三信息更新后向网络设备发送更新的第三信息，使得网络设备能够及时获得最新的第三信息。
在第三信息中，一个接收UE的信息例如包括该接收UE的标识，以及包括该标识所对应的索引。即，在第三信息中，一个标识对应一个索引，或者说，标识与索引一一对应。第三信息所包括的索引可以是第一UE设置的，例如第一UE确定至少一个接收UE可能与第一UE通信，第一UE将至少一个接收UE的标识添加到第三信息中，即，第一UE向第三信息添加至少一个标识，另外第一UE还可以为至少一个标识分别设置索引，以区分不同的标识。至少一个标识的索引例如为0,1,2,……等。例如在第三信息中，第二UE的信息可以包括第二UE的标识，以及第二UE的标识对应的索引。第三信息例如以列表的形式呈现，或者也可以以其他形式呈现。网络设备接收第三信息后，可存储第三信息，例如网络设备以列表形式存储第三信息包括的内容，该列表内包括至少一个接收UE的标识，以及这些标识分别对应的索引。
可选的，在本申请的各个实施例中，UE的标识例如为该UE的层(layer，L)-1的ID或L-2的ID，UE的标识可用于确定该UE。对于一个UE来说，该UE的物理层可以从该UE的高层获得该UE的标识，高层例如为应用层(application layer)或MAC层，例如，该UE的应用层可确定该UE的标识，应用层可将所确定的标识传递给该UE的MAC层， MAC层再将该标识传递给该UE的物理层。或者，该UE的标识也可以是该UE自主确定的。或者，UE的标识也可以是由网络设备配置的。如果UE的标识不是网络设备配置的，那么网络设备可以预先获得UE的标识(例如在S601中，第二UE向网络设备发送了第二UE的标识与第二UE的能力信息，则网络设备就获得了第二UE的标识)，这样网络设备能够将第三信息中的索引与网络设备存储的UE的能力信息相对应。
或者，在第三信息中，一个接收UE的信息例如包括该接收UE的能力信息，以及包括该能力信息所对应的索引。即，在第三信息中，一个能力信息(或者说，一份能力信息)对应一个索引，或者说，能力信息与索引一一对应。第三信息所包括的索引可以是第一UE设置的，例如第一UE确定至少一个接收UE可能与第一UE通信，第一UE将至少一个接收UE的能力信息添加到第三信息中，即，第一UE向第三信息添加至少一个能力信息，另外第一UE还可以为至少一个能力信息分别设置索引，以区分不同的能力信息。例如在第三信息中，第二UE的信息可以包括第二UE的能力信息，以及第二UE的能力信息对应的索引。如果采用这种方式，则S601也可以不必执行，网络设备通过第三信息就能获得第二UE的能力信息，有利于节省网络设备的存储空间。另外，如果采用这种方式，则第一UE需要获取第二UE的能力信息。例如，第一UE可从第一UE的高层(例如MAC层或应用层等)获取第二UE的能力信息，或者，第一UE可以在与第二UE的通信过程中获取第二UE的能力信息，例如第一UE可以在与第二UE建立侧行连接时获取第二UE的能力信息，或者第一UE也可以在与第二UE的侧行连接建立成功后获取第二UE的能力信息。
第三信息例如以列表的形式呈现，或者也可以以其他形式呈现。
S604、第一UE向网络设备发送第一请求消息。相应的，网络设备从第一UE接收第一请求消息。第一请求消息可用于请求资源，该资源是用于第一UE向第二UE发送数据，或者说，该资源是用于侧行传输的资源。相当于，在第一UE向第二UE发送数据之前，需要先向网络设备请求资源，则第一UE可向网络设备发送第一请求消息。第一请求消息例如为BSR，或者也可以是其他的用于请求资源的消息。
第一请求消息除了用于请求资源外，还可包括第二指示信息。可理解为，第一请求消息包括两个字段，这两个字段中的一个字段承载用于请求资源的信息，这两个字段中的另一个字段承载第二指示信息。或者，用于请求资源的信息和第二指示信息也可以承载在第一请求消息包括的一个字段中。或者，第一请求消息也可以不包括用于请求资源的信息，只要发送第一请求消息就表明用于请求资源。
第二指示信息例如包括第二UE的标识，或包括第二UE的索引。例如，第二信息包括的接收UE的信息包括该接收UE的标识以及对应的索引，那么第二指示信息可包括第二UE的标识，或包括第二UE的索引。由于网络设备已存储了第二UE的能力信息与第二UE的标识的对应关系，如果第二指示信息包括第二UE的标识，网络设备根据第二UE的标识可确定第二UE的能力信息；如果第二指示信息包括第二UE的索引，网络设备根据第二UE的索引可从第三信息中确定第二UE的标识，再根据第二UE的标识确定第二UE的能力信息。在这种指示方式下，第一UE无需确定第二UE的能力，第二指示信息可直接包括第二UE的标识，由网络设备来确定第二UE的能力。
或者，第二信息包括的接收UE的信息包括该接收UE的能力信息以及对应的索引，那么第二指示信息可包括第二UE的索引。网络设备无需预先存储第二UE的能力信息， 而是根据第二UE的索引就可从第三信息中确定第二UE的能力信息。
第一UE例如通过调度请求(scheduling request，SR)信道向网络设备发送第一请求消息，例如网络设备为不同的UE分配了不同的SR信道，因此网络设备根据SR信道就能确定第一UE，从而能够确定是否存储了第一UE的标识与第一UE的能力信息之间的对应关系，如果已存储，则网络设备可以确定第一UE的能力信息，从而可以确定第一UE是否为第一类型的UE。
S605、网络设备向第一UE发送第一响应消息。相应的，第一UE从网络设备接收第一响应消息。第一响应消息指示第一资源。
网络设备接收第一请求消息后，可以为第一UE分配资源。通过第二指示信息，网络设备在为第一UE分配资源时能够考虑第一UE和/或第二UE的能力，从而为第二UE分配第一UE和第二UE都能够支持的资源。例如第一资源的频率位于第二UE支持的频带内，也位于第二UE支持的频带内。举例来说，例如第一UE和/或第二UE为RedCap UE，则网络设备为第一UE分配的第一资源可位于RedCap UE所支持的频域范围内(例如分配的资源位于RedCap UE适用的子资源池内)，且分配的第一资源的带宽也是RedCap UE所支持的带宽，使得第一UE与第二UE能够正常通信。可见，通过第二指示信息使得网络设备能够获知通信双方的UE的能力，从而使得网络设备能够为UE分配合适的资源，提高了UE之间通信的成功率。
可选的，向网络设备请求资源也可由第二UE(即，接收端UE)执行。例如第一UE需要向第二UE发送数据，则第一UE可预先指示第二UE，第二UE获知即将接收数据后，可以向网络设备发送第一请求消息，以请求分配资源。如果是这种情况，那么网络设备可以向第二UE发送第一响应消息，即，S604和S605可由第二UE执行。
其中，S601～S603为可选的步骤。另外，图5所示的实施例与图6所示的实施例可以单独应用，或者也可以结合应用。
前文介绍了，在NR-V2X中引入了两种资源选择机制，分别是mode 1和mode 2。其中mode 1是基站分配资源的机制，mode 2是UE自选资源的机制。图5所示的实施例和图6所示的实施例介绍的都是mode 1相关的方案，接下来介绍mode 2相关的方案。在mode 2中，发送端UE侧引入了感知行为，针对周期性和非周期业务，发送端UE能够感知信道占用情况以及未来一些时刻的资源预约情况，从而识别这些资源是否被占用。对于周期性业务，周期性资源之间的时间间隔即周期，周期可以是100ms的整倍数，或者是1～99ms等离散值。非周期业务的资源预约值一般在32个时隙内。
可参考图7，为UE(例如：发送端UE)选择资源的示意图。UE可在图7所示的资源感知窗(sensing window)内对全部时隙进行感知，感知方式例如为监听侧行控制信息(sidelink control information，SCI)，以确定信道占用情况以及未来一些时刻的资源预约情况。根据感知结果，发送端UE可以在资源选择窗(selection window)中选择可用的资源。例如发送端UE在资源选择窗中，根据预约信号的强度，选择未被预约或者虽然被预约但是预约信号的信号强度较弱的资源用于传输，图7中画“\”的方框表示发送端UE所确定的候选资源。图7中的间隔(gap)表示周期性资源的预约情况，即，“间隔”所指示的选择窗口内的资源是不可用的，在选择资源时需排除；w表示非周期性资源的预约情况，即，w所指示的选择窗口内的资源也是不可用的，在选择资源时需排除。
目前，为了避免混合资源池内各类UE互相干扰，可以再在混合资源池中为不同类型 的UE分配各自的子资源池。对于带宽有限的UE(或者其他第一类型的UE)，例如RedCap UE，为这类UE所分配的子资源池的带宽可能较小，这类UE一般也只能在自己的子资源池内通信，对于自己的子资源池之外的资源，该类UE没有能力感知，例如，在该类UE的子资源池之外的资源上所发送的消息，该类UE没有能力监听。而对于非带宽有限的UE(或者说第二类型的UE)，例如感知能力强的UE或不限制功耗的UE，则这些UE的子资源池可能会包含其他类型的UE的子资源池，或者与其他类型的UE的子资源池有交集，使得这类UE能够在较大范围内进行资源选择，从而提高混合资源池的利用率。然而在mode 2中，由于带宽有限的UE能够进行感知的频带有限，如果非带宽有限的UE在带宽有限的UE所能够感知的频带之外发送SCI，该SCI用于预约能力较低的子资源池内的资源，而带宽有限的UE无法监听该SCI，此时预约机制失效，可能导致资源碰撞。
鉴于此，本申请实施例提供几种解决方式，这几种解决方式将通过几种通信方法来体现。首先提供第四种通信方法，通过该方法，可以减小资源碰撞的概率，尽量保证预约机制的有效性。可参考图8，为该方法所适用的场景。图8包括UE1和UE2。例如下文所述的第一UE为图8中的UE1，第二UE为图8中的UE2。请再参考图9，为该方法的流程图。
S901、第一UE发送M个消息。M为正整数。
例如M个消息中的每个消息都用于预约资源，该资源用于第一UE发送数据。该数据可能发送给第二UE，也可能发送给其他UE。可选的，M个消息所预约的资源可用于发送一个传输块(transport block，TB)，或者也可以用于发送多个传输块。
第一UE例如为第二类型的UE，第一UE在混合资源池内所使用的子资源池例如称为第二子资源池。第二UE例如为第一类型的UE，第二UE在混合资源池内所使用的子资源池例如称为第一子资源池。第一类型例如为带宽有限类型，例如RedCap；第二类型例如为非带宽有限类型，例如部分感知类型、完全感知类型、或随机资源选择类型等。还有可能，第二UE不是第一类型的UE，而是非第一类型的UE，例如第二UE也是第二类型的UE。如果第二UE是非第一类型的UE，那么第二UE可能是有能力在较大的频带上感知用于预约资源的消息，或者说第二UE有能力在较大的频带上监听PSCCH。但是可能在某一段时间内需要限制第二UE的能力，或者可能在某些场景下需要限制第二UE的能力，限制方式例如为限制第二UE只能监听第二子资源池，不能监听第二子资源池外的其他资源。例如，为了降低待机时间段内的功耗，在一些时间段内，限制第二UE在窄带宽上工作，即，限制第二UE只能监听第二子资源池，不能监听第二子资源池外的其他资源。那么对于被限制能力的第二UE，也可以应用本申请实施例的技术方案。在后文的介绍过程中，主要以第二UE是第一类型的UE为例。
第二子资源池例如包含了第一子资源池，或者第二子资源池例如与第一子资源池有交集。那么第一UE在第二子资源池内发送M个消息，M个消息所预约的部分或全部资源就可能位于第一子资源池内，例如M个消息中存在N个消息，这N个消息所预约的资源位于第一子资源池内。其中N为正整数，且N小于或等于M。如果M个消息不在第一子资源池内发送，则第二UE无法监听到M个消息，就无法获知第一UE对于第一子资源池内的资源的预约情况。如果第二UE也要预约这些资源，就会导致资源碰撞。需要注意的是，在前文介绍了，本申请的各个实施例所述的“第一子资源池”均可替换为“第一资源池”；类似的，本申请的各个实施例所述的“第二子资源池”也可替换为“第二资源池”。
为此，本申请实施例提出，这N个消息可以均位于第一子资源池内，或者说，N个消息的频域位置均位于第一子资源池内。那么相应的，该方法还包括S902：第二UE从第一UE接收N个消息。对此也可以理解为，第一子资源池之外的消息不能预约第一子资源池内的资源，例如第一UE如果在第一子资源池外发送了消息，那么该消息就不用于预约第一子资源池内的资源。例如参考图10，其中的消息1位于第一子资源池内，消息2位于第一子资源池外，因此消息1可预约第一子资源池内的资源(例如图10中，消息1预约了第一子资源池内的资源以及第一子资源池外的资源)，而消息2不能预约第一子资源池内的资源，或者说，消息2预约的资源不能包括第一子资源池内的资源。采用这种方式，第二UE对于N个消息能够监听，从而能够获知其他UE对于第一子资源池内的资源的预约情况，减小了资源碰撞的概率，保证了预约机制的有效性。
鉴于上述机制较为严格，对于第一UE的约束较大，因此可以适当放宽条件。例如规定，N个消息中有至少一个消息位于第一子资源池内即可。那么相应的，第二UE可从第一UE接收至少一个消息。第二UE只要收到至少一个消息，就能明确其他UE对于第一子资源池内的资源的预约情况。采用这种方式，能够减小对于第一UE的约束，简化第一UE的实现。例如，至少一个消息可包括M个消息中在时域上的第1个消息。第一UE发送M个消息，可能不是同时发送，例如第一UE可能先发送一个消息，过一段时间再发送下一个消息，以此类推。那么，第一UE在发送M个消息中在时域上的第2个消息时，可能第1个消息所预约的资源已经被第一UE占用了一部分，即，第一UE可能是一边使用资源一边预约资源。那么，如果至少一个消息中不包括第1个消息，则对于第二UE来说，在接收至少一个消息之前，可能第一子资源池内的有些资源已经被第一UE占用，而第二UE对此并不知晓，如果第二UE之前也预约了这些资源，则可能已经出现了资源碰撞。因此，令至少一个消息可包括M个消息中在时域上的第1个消息，可以在较大程度上减少资源碰撞。
所述消息例如为SCI，例如第一级SCI(SCI 1)，或者也可以是其他消息。所述消息还可以有其他名称，例如称为“预约消息”等，名称对于特征不构成限制。
通过本申请实施例，令用于预约第一子资源池内的资源的消息在第一子资源池内发送，使得第一类型的UE能够监听到消息。例如，当第一UE所发送的数据的接收端是Redcap UE，或者第一UE预约资源是为了给Redcap UE发送数据时，第一UE需要在Redcap UE的子资源池内发送数据，或者发送用于预约资源的消息，使得Redcap UE能够监听到该数据或消息。由此能够减小资源碰撞的概率，也能尽量保证预约机制的有效性。
接下来本申请实施例提供第五种通信方法，通过该方法也能减小资源碰撞的概率。该方法可继续应用于图8所示的场景，例如下文所述的第一UE为图8中的UE1，第二UE为图8中的UE2。请再参考图11，为该方法的流程图。
S1101、第二UE发送第一消息。相应的，第一UE从第二UE接收第一消息。
关于第一UE的类型、第二UE的类型、以及两个UE各自所使用的子资源池等内容，可参考图9所示的实施例的介绍。
第二UE可在第一子资源池内发送第一消息，第一UE能够监听到第一消息。
第一消息可预约第一资源，第二UE预约第一资源是用于发送第二数据。可选的，第一消息还包括第三指示信息，第三指示信息可指示第一消息(或者，第三指示信息)的发送端(即，第二UE)为第一类型的UE，例如RedCap UE，或者第三指示信息可指示第一 消息(或者，第三指示信息)的发送端支持的带宽，或者第三指示信息可指示第一消息(或者，第三指示信息)的发送端支持的频带。这使得接收第一消息的UE能够明确第二UE的能力。对于非第一类型的UE，例如非RedCap UE，在发送消息时就可以不必包括第三指示信息。
或者，第三指示信息可指示第一消息(或者，第三指示信息)的发送端(即，第二UE)不是第一类型的UE，或者第三指示信息可指示第一消息(或者，第三指示信息)的发送端支持的带宽，或者第三指示信息可指示第一消息(或者，第三指示信息)的发送端支持的频带。这使得接收第一消息的UE能够明确第二UE的能力。那么对于第一类型的UE，例如RedCap UE，在发送消息时就可以不必包括第三指示信息。
可理解为，第一消息包括两个字段，这两个字段中的一个字段承载用于预约资源的信息，这两个字段中的另一个字段承载第三指示信息。或者，用于预约资源的信息和第三指示信息也可以承载在第一消息包括的一个字段中。
可选的，如果第一UE也需要预约第一资源，则可继续执行后续的步骤；如果第一UE并不预约第一资源，则后续步骤可不必执行，第一UE正常预约资源即可。
S1102、第一UE提高第一消息指示的优先级。
第一消息可指示优先级，该优先级可以是第二数据的优先级。例如第一消息指示优先级的方式为，第一消息可携带优先级信息，该优先级信息就对应第一消息指示的优先级。该优先级信息例如为优先级数值，该数值例如为1至8中的任一个，或者也可以是其他数值，该数值由第二数据的优先级决定。第一UE从第一消息中获得该优先级数值，也就确定了第一消息所指示的优先级。
例如，优先级数值越小，则表示优先级越高，那么第一UE可以减小该优先级数值，就相当于提高了该优先级。例如第一UE从第一消息中获得的优先级数值为3，第一UE可将该数值减小为2或1，就相当于提高了第二数据的优先级。又例如，优先级数值越大，则表示优先级越高，那么第一UE可以增大该优先级数值，就相当于提高了该优先级。例如第一UE从第一消息中获得的优先级数值为3，第一UE可将该数值增大为4或5，就相当于提高了第二数据的优先级。
作为一种可选的实施方式，第一UE在提高该优先级时，可以按照步进值提高，规定每次提高步进值，该步进值由第一UE确定，或预配置在第一UE中，或通过协议规定，或由网络设备配置。例如，优先级数值越小，则表示优先级越高，第一UE从第一消息中获得的优先级数值为3，步进值为1，则第一UE可将该数值减小为2。其中，如果第一消息指示的优先级已经是最高优先级，无法再提高，则第一UE可不必再提高该优先级，即不必执行S1102。
或者，作为另一种可选的实施方式，规定了第一优先级，第一UE可将该优先级提高为第一优先级。第一优先级例如由第一UE确定，或预配置在第一UE中，或通过协议规定，或由网络设备配置。例如第一UE从第一消息中获得的优先级数值为3，第一优先级为1，则第一UE可将该数值减小为1。在这种情况下，如果第一消息指示的优先级已经是第一优先级，或者已经高于第一优先级，则第一UE可不必再提高该优先级，即不必执行S903。
S1103、第一UE确定第一消息是否满足第一条件。如果第一消息满足第一条件，则第一UE可抢占第一资源，而如果第一消息不满足第一条件，则第一UE不能抢占第一资源。
作为第一条件的第一种实施方式，第一条件包括第一数据的优先级高于提高后的优先级。那么S1103具体可以是，第一UE确定第一数据的优先级是否高于提高后的优先级。如果第一数据的优先级高于提高后的优先级，表明第一消息满足第一条件，而如果第一数据的优先级低于提高后的优先级，表明第一消息不满足第一条件。其中，如果第一数据的优先级等于提高后的优先级，可以表明第一消息满足第一条件，或者表明第一消息不满足第一条件。
第一数据是第一UE待发送的数据。例如，优先级数值越小，则表示优先级越高，第一消息所指示的优先级原本为3，第一UE将其减小为2，第一数据的优先级为3，则第一数据的优先级低于提高后的优先级。又例如，优先级数值越小，则表示优先级越高，第一消息所指示的优先级原本为3，第一UE将其减小为2，第一数据的优先级为1，则第一数据的优先级高于提高后的优先级。
作为第一条件的第二种实施方式，第一条件包括提高后的优先级满足第一门限。那么S1103具体可以是，第一UE确定提高后的优先级是否满足第一门限。如果提高后的优先级满足第一门限，表明第一消息满足第一条件，而如果提高后的优先级不满足第一门限，表明第一消息不满足第一条件。第一门限例如为第一优先级，一个优先级满足第一门限，例如为该优先级低于或等于第一门限，一个优先级不满足第一门限，例如为该优先级高于第一门限。第一门限由第一UE确定，或预配置在第一UE中，或通过协议规定，或由网络设备配置。
作为第一条件的第三种实施方式，第一条件包括第一消息的信号强度小于第一信号强度门限。那么S1103具体可以是，第一UE确定第一消息的信号强度是否小于第一信号强度门限。如果第一消息的信号强度小于第一信号强度门限，表明第一消息满足第一条件，而如果第一消息的信号强度大于或等于第一信号强度门限，表明第一消息不满足第一条件。第一信号强度门限由第一UE确定，或预配置在第一UE中，或通过协议规定，或由网络设备配置。例如，第一信号强度门限根据提高后的优先级和/或第一数据的优先级确定。第一信号强度门限例如包括参考信号接收功率(reference signal receiving power，RSRP)的取值和/或参考信号接收质量(reference signal receiving quality，RSRQ)的取值，或者还可以包括其他参数的取值。如果第一条件采用这种实现方式，则可选的，也可以不必执行S1102，即，第一UE可不必提高第一消息所指示的优先级，而是确定第一消息的信号强度是否小于第一信号强度门限即可。
也就是说，第一UE可以将第一数据的优先级与提高后的优先级进行比较，也可以将第一门限与提高后的优先级进行比较，或者可以将第一消息的信号强度与第一信号强度门限比较，实现方式较为灵活。
第一条件的如上三种实施方式可以单独使用，或者，如上三种实施方式中的任意两种或三种也可以结合应用。例如，第一条件的第一种实施方式与第三种实施方式可结合，那么第一条件包括第一数据的优先级高于提高后的优先级，以及包括第一消息的信号强度小于第一信号强度门限。则S1103具体可以是，第一UE确定第一数据的优先级是否高于提高后的优先级，以及确定第一消息的信号强度是否小于第一信号强度门限。如果第一数据的优先级高于提高后的优先级，且第一消息的信号强度小于第一信号强度门限，表明第一消息满足第一条件；而如果第一数据的优先级低于或等于提高后的优先级，和/或第一消息的信号强度大于或等于第一信号强度门限，表明第一消息不满足第一条件。如上三种实施 方式中如果其他的两种或三种方式相结合，结合方式也是类似的。
S1104、当第一消息满足第一条件时，第一UE在第一子资源池内发送第二消息。而当第一消息不满足第一条件时，第一UE在第一子资源池内不发送第二消息。关于第一消息在何种情况下满足第一条件以及在何种情况下不满足第一条件，可参考S1103的介绍。
相应的，第二UE从第一UE接收第二消息。
其中，第一UE不发送第二消息，也就是不抢占第一资源。
第二消息例如通过广播方式发送，第二消息也用于预约第一资源，此时第二消息可视为抢占消息。也就是说，通过提高第一消息所指示的优先级，可尽量保证第一类型的UE使用第一子资源池内的资源。但如果第一消息不满足第一条件，则非第一类型的UE就可以抢占第一子资源池内的资源，以尽量保证较高优先级的数据的发送。且非第一类型的UE也是在第一子资源池内发送抢占消息，使得第一类型的UE能够监听到该抢占消息，从而减少资源碰撞。而如果第一消息不满足第一条件，则第一UE就不抢占第一资源，此时，第一UE可以继续发送消息以预约除了第一资源外的其他资源以发送第一数据，或者第一UE也可以不预约资源，不发送第一数据。
例如参考图12，其中的第一消息位于第一子资源池内，是第二UE发送的，第一消息包括第三指示信息，例如指示第二UE是RedCap UE，第一消息用于预约第一资源。另外还存在第三消息，第三消息也预约第一资源，但第三消息是在第一子资源池外发送的，则第三消息不能抢占第一资源。
通过本申请实施例提供的方案，可以在尽量保证第一类型的UE使用第一子资源池的前提下，提高第一子资源池内的资源的利用率。而且抢占消息在第一子资源池内发送，也能减少资源碰撞，保证预约机制的有效性。
接下来本申请实施例提供第六种通信方法，通过该方法也能减小资源碰撞的概率。该方法可继续应用于图8所示的场景，例如下文所述的第一UE为图8中的UE1，第二UE为图8中的UE2。请再参考图13，为该方法的流程图。
S1301、第一UE降低第一数据的优先级。
关于第一UE的类型、第二UE的类型、以及两个UE各自所使用的子资源池等内容，可参考图9所示的实施例的介绍。
第一数据是第一UE待发送的数据，第一UE需要为发送第一数据预约资源。在预约资源之前，第一UE可先降低第一数据的优先级。
例如，第一数据的优先级通过第一优先级数值表示，第一UE的物理层可以从第一UE的高层(例如媒体接入控制(media access control，MAC)层或应用层等)获得第一优先级数值。例如，优先级数值越小，则表示优先级越高，那么第一UE可以增大第一优先级数值，就相当于降低了该优先级。例如第一UE获得的第一优先级数值为3，第一UE可将该数值增大为4或5，就相当于降低了第一数据的优先级。又例如，优先级数值越大，则表示优先级越高，那么第一UE可以减小第一优先级数值，就相当于降低了该优先级。例如第一UE获得的第一优先级数值为3，第一UE可将该数值减小为2或1，就相当于降低了第一数据的优先级。第一UE降低第一数据的优先级可按照步进值的方式或按照规定优先级的方式，与图11所示的实施例的区别在于，图11所示的实施例是提高优先级，本申请实施例是降低优先级，但执行方式都是类似的，因此可参考图11所示的实施例的介绍。本申请实施例所使用的步进值与图11所示的实施例所使用的步进值可以相同也可以不同， 本申请实施例所使用的规定优先级与图11所示的实施例所使用的第一优先级可以相同也可以不同。
S1302、第一UE在第一子资源池内发送消息。相应的，第二UE从第一UE接收消息。
在降低第一数据的优先级后，第一UE可以在第一子资源池内预约资源以发送第一数据，例如该消息所预约的资源为第一资源。该消息可包括第二优先级数值，第二优先级数值就是降低后的优先级对应的优先级数值。第二UE在接收该消息后，可以确定第二UE待发送的数据(例如第二数据)的优先级是否高于第二优先级数值对应的优先级，如果第二数据的优先级高于第二优先级数值对应的优先级，则第二UE可以占用第一资源；而如果第二数据的优先级低于或等于第二优先级数值对应的优先级，则第二UE可以不占用第一资源，由此可以减少资源碰撞。
或者，第二UE在接收该消息后，可以确定第二优先级数值对应的优先级是否满足第三门限。如果第二优先级数值对应的优先级满足第三门限，表明第二UE不能占用第一资源，而如果第二优先级数值对应的优先级不满足第三门限，表明第二UE能够继续占用第一资源。第三门限例如为第二优先级，一个优先级满足第三门限，例如为该优先级高于第三门限，一个优先级不满足第三门限，例如为该优先级低于或等于第三门限。也就是说，第二UE可以将第二数据的优先级与第二优先级数值对应的优先级进行比较，也可以将第三门限与第二优先级数值对应的优先级进行比较。第三门限由第二UE确定，或预配置在第二UE中，或通过协议规定，或由网络设备配置。
或者，第二UE在接收该消息后，可确定该消息的信号强度是否大于第二信号强度门限。如果该消息的信号强度大于第二信号强度门限，表明第二UE不能占用第一资源，而如果该消息的信号强度小于第二信号强度门限，表明第二UE能够继续占用第一资源。如果该消息的信号强度等于第二信号强度门限，可以表明第二UE不能占用第一资源，或者表明第二UE能够占用第一资源。第二信号强度门限由第二UE确定，或预配置在第二UE中，或通过协议规定，或由网络设备配置。例如，第二信号强度门限根据第二优先级数值和/或第二数据的优先级确定。
本申请实施例中，非第一类型的UE如果要预约第一子资源池内的资源，则可以降低该UE所要发送的数据的优先级，以在尽量保证第一子资源池内的资源供第一类型的UE使用的前提下，提高第一子资源池内的资源的利用率。而且用于预约资源的消息在第一子资源池内发送，也能减少碰撞，保证预约机制的有效性。
接下来本申请实施例提供第七种通信方法，通过该方法也能减小资源碰撞的概率。该方法可继续应用于图8所示的场景，例如下文所述的第一UE为图8中的UE1，第二UE为图8中的UE2。请再参考图14，为该方法的流程图。
S1401、第一UE在第二子资源池内发送第一消息。
关于第一UE的类型、第二UE的类型、以及两个UE各自所使用的子资源池等内容，可参考图9所示的实施例的介绍。
第一UE例如要发送第一数据，则通过第一消息来预约资源，例如第一消息可预约第一资源，第一资源的频域位置位于第一子资源池内，也就是说，第一资源是第一子资源池内的资源。
由于第一消息是在第二子资源池内发送，并未在第一子资源池内发送，因此第二UE无法监听到第一消息。
S1402、第二UE在第一子资源池内发送第二消息。相应的，第一UE从第二UE接收第二消息。
第二UE例如要发送第二数据，则通过第二消息来预约资源，例如第二消息用于预约第二资源。因为第二UE并未监听到第一消息，不知道第一资源已经被第一UE预约，因此第二UE认为第一资源是可用的，因此，第一资源与第二消息所预约的第二资源可能是同一个资源，或者，第一资源与第二资源也可能有交集。当然，第一资源与第二资源也可能没有交集，即，二者是不同的资源。第二子资源池包括了第一子资源池，因此第二UE在第一子资源池内发送第二消息，第一UE能够监听到第二消息。
S1403、当第一资源与第二资源有重合资源时，第一UE不在第一资源上发送数据，或者，第一UE不在第一资源与第二资源的重合资源上发送数据。其中，第一资源与第二资源有重合资源，也可以理解为，第一资源与第二资源有交集。相应的，“重合资源”也可以称为“交集资源”。可理解的是，名称对于特征本身不构成限制。
如果第一资源与第二资源是同一个资源，或者第一资源与第二资源有交集(也就是说，第一资源与第二资源不完全相同)，则第一UE都可以放弃使用第一资源，即，不在第一资源上发送数据，将第一资源留给第二UE使用。在本申请实施例中，因为第二UE并不知道第一资源已被第一UE预约，因此第一UE可以不必考虑第一数据的优先级和第二数据的优先级之间的大小关系，而直接放弃使用第一资源，可以使得第二UE正常使用第二资源，以减少资源碰撞。
或者，如果第一资源与第二资源是同一个资源，或者第一资源与第二资源有交集，则第一UE可以确定第一优先级是否高于第二优先级，如果第一优先级高于第二优先级，则第一UE放弃使用第一资源，而如果第一优先级低于第二优先级，则第一UE继续使用第一资源。如果第一优先级等于第二优先级，第一UE可以放弃使用第一资源，也可以继续使用第一资源。其中，第二优先级是第二消息所指示的优先级。第一优先级低于第一消息所指示的优先级，或者说低于第一数据的优先级，也就是说，第一优先级是降低后的第一数据的优先级。
或者，如果第一资源与第二资源是同一个资源，或者第一资源与第二资源有交集，则第一UE可以确定第二优先级是否高于第四门限，如果第二优先级高于第四门限，则第一UE放弃使用第一资源，而如果第二优先级低于第四门限，则第一UE继续使用第一资源。第二优先级是第二消息所指示的优先级。第四门限例如由第一UE配置，或者由网络设备配置，或者预配置在第一UE中，或者通过协议预定义。第四门限例如低于第一数据的优先级。
按照现有技术的方案，如果第一UE确定第二UE与第一UE预约了相同的资源，则第一UE需要考虑第二UE的数据优先级是否高于门限或高于第一UE的数据优先级，才能确定是否放弃该资源。而本申请实施例中，第一UE无需考虑该优先级，或者，第一UE可以考虑一个更低的优先级(比第一UE的数据优先级低的第四门限，或者第二UE的数据优先级高于“降低后的第一UE的数据优先级”)。通过这种方式，除第一类型外的其他类型的UE可以在第一类型的UE不使用第一子资源池时再使用第一子资源池，保证了第一类型的UE使用第一子资源池的权力。
或者还有一种可能，如果第一资源与第二资源有交集，那么第一UE可以不在交集资源上发送数据，但是可以在第三资源上发送数据。其中，该交集资源是指第一资源与第二 资源的交集部分，例如第一资源除了包括该交集资源外还包括其他资源，第三资源就是指第一资源除了包括该交集资源外还包括的资源。在这种情况下，第一UE可以不在该交集资源上发送数据，但是可以在第三资源上发送数据。因为第三资源与第二资源并无交集，因此第一UE在第三资源上发送数据不会对第二UE产生影响，而且这样也能提高资源利用率，减小第一数据的发送时延。
第一UE不在第一资源上发送数据，例如一种实现方式为，第一UE的物理层向第一UE的高层(例如MAC层或应用层等)发送指示信息，该指示信息可指示将第一资源从可用的资源中排除。第一UE的高层根据该指示信息，可将第一资源从可用的资源中排除，这样对于第一UE来说，第一资源就是不可用的资源，第一UE也不会在第一资源上发送数据。如果第一UE不在交集资源上发送数据，处理方式也是类似的。
而如果第一资源与第二资源是不同的资源，且没有交集，则第一UE可以在第一资源上发送第一数据。
通过本申请实施例提供的方案，可以尽量保证第一类型的UE使用第一子资源池内的资源，且能减少资源碰撞，提高预约机制的有效性。
接下来本申请实施例提供第八种通信方法，通过该方法也能减小资源碰撞的概率。该方法可继续应用于图8所示的场景，例如下文所述的第一UE为图8中的UE1，第二UE为图8中的UE2。请再参考图15，为该方法的流程图。
S1501、第二UE发送第一消息。相应的，第一UE从第二UE接收第一消息。
第一UE例如为第一类型的UE，第一UE例如适用于第一子资源池。第二UE可以是第一类型的UE，也可以是其他类型的UE，例如第二类型的UE，第二UE例如适用第二子资源池。关于第一类型、第二类型、第一子资源池以及第二子资源池等内容，可参考图9所示的实施例的介绍。
第二UE可在第一子资源池内发送第一消息，第一UE能够监听到第一消息。
第一消息可预约第一资源，第二UE预约第一资源是用于发送第二数据。如果第二UE是第一类型的UE，则可选的，第一消息还包括第三指示信息，第三指示信息可指示第一消息(或者，第三指示信息)的发送端(例如第二UE)为第一类型的UE，例如RedCap UE，或者第三指示信息可指示第一消息(或者，第三指示信息)的发送端支持的带宽，或者第三指示信息可指示第一消息(或者，第三指示信息)的发送端支持的频带。这使得接收第一消息的UE能够明确第二UE的能力。对于第一类型的UE，在发送消息时可包括第三指示信息，而对于非第一类型的UE，例如非RedCap UE，在发送消息时就可以不必包括第三指示信息。
或者，如果第二UE不是第一类型的UE，第三指示信息可指示第一消息(或者，第三指示信息)的发送端(即，第二UE)不是第一类型的UE，或者第三指示信息可指示第一消息(或者，第三指示信息)的发送端支持的带宽，或者第三指示信息可指示第一消息(或者，第三指示信息)的发送端支持的频带。这使得接收第一消息的UE能够明确第二UE的能力。那么对于第一类型的UE，在发送消息时可包括第三指示信息，而对于第一类型的UE，例如RedCap UE，在发送消息时就可以不必包括第三指示信息。或者，如果第二UE不是第一类型的UE，则第一消息也可以不携带第三指示信息。接收端根据第一消息不携带第三指示信息，就能确定第二UE不是第一类型的UE。
可理解为，第一消息包括两个字段，这两个字段中的一个字段承载用于预约资源的信 息，这两个字段中的另一个字段承载第三指示信息。或者，用于预约资源的信息和第三指示信息也可以承载在第一消息包括的一个字段中。
可选的，如果第一UE也需要预约第一资源，则可继续执行后续的步骤；如果第一UE并不预约第一资源，则后续步骤可不必执行，第一UE正常预约资源即可。
S1502、第一UE降低第一消息指示的优先级。可选的，如果第一消息未携带第三指示信息，或者第一消息携带的第三指示信息指示第二UE不是第一类型的UE(例如第三指示信息指示第二UE的类型，且该类型不是第一类型，就视为第三指示信息指示第二UE不是第一类型的UE)，则第一UE可执行S1502，否则，第一UE可不执行S1502，而是正常比较第一消息的优先级以及第一数据的优先级即可。
第一消息可指示优先级，该优先级可以是第二数据的优先级。例如第一消息指示优先级的方式为，第一消息可携带优先级信息，该优先级信息就对应第一消息指示的优先级。该优先级信息例如为优先级数值，该数值例如为1至8中的任一个，或者也可以是其他数值，该数值由第二数据的优先级决定。第一UE从第一消息中获得该优先级数值，也就确定了第一消息所指示的优先级。
例如，优先级数值越小，则表示优先级越高，那么第一UE可以增大该优先级数值，就相当于降低了该优先级。例如第一UE从第一消息中获得的优先级数值为3，第一UE可将该数值增大为4或5等，就相当于降低了第二数据的优先级。又例如，优先级数值越小，则表示优先级越高，那么第一UE可以减小该优先级数值，就相当于降低了该优先级。例如第一UE从第一消息中获得的优先级数值为3，第一UE可将该数值减小为1或2，就相当于降低了第二数据的优先级。
作为一种可选的实施方式，第一UE在降低该优先级时，可以按照步进值降低，规定每次降低步进值，该步进值由第一UE确定，或预配置在第一UE中，或通过协议规定，或由网络设备配置。例如，优先级数值越小，则表示优先级越高，第一UE从第一消息中获得的优先级数值为3，步进值为1，则第一UE可将该数值增大为4。其中，如果第一消息指示的优先级已经是最低优先级，无法再降低，则第一UE可不必再降低该优先级，即不必执行S1502。
或者，作为另一种可选的实施方式，规定了第一优先级，第一UE可将该优先级降低为第一优先级。第一优先级例如由第一UE确定，或预配置在第一UE中，或通过协议规定，或由网络设备配置。例如第一UE从第一消息中获得的优先级数值为1，第一优先级为3，则第一UE可将该数值提高为3(例如数值越大则优先级越低)。在这种情况下，如果第一消息指示的优先级已经是第一优先级，或者已经低于第一优先级，则第一UE可不必再降低该优先级，即不必执行S1502。
S1503、第一UE确定第一消息是否满足第一条件。如果第一消息满足第一条件，则第一UE可抢占第一资源，而如果第一消息不满足第一条件，则第一UE不能抢占第一资源。
作为第一条件的第一种实施方式，第一条件包括第一数据的优先级高于降低后的优先级。那么S1503具体可以是，第一UE确定第一数据的优先级是否高于降低后的优先级。如果第一数据的优先级高于降低后的优先级，表明第一消息满足第一条件，而如果第一数据的优先级低于降低后的优先级，表明第一消息不满足第一条件。其中，如果第一数据的优先级等于降低后的优先级，可以表明第一消息满足第一条件，或者表明第一消息不满足第一条件。
第一数据是第一UE待发送的数据。例如，优先级数值越小，则表示优先级越高，第一消息所指示的优先级原本为3，第一UE将其增大为4，第一数据的优先级为3，则第一数据的优先级高于降低后的优先级。又例如，优先级数值越小，则表示优先级越高，第一消息所指示的优先级原本为3，第一UE将其增大为5，第一数据的优先级为6，则第一数据的优先级低于降低后的优先级。
作为第一条件的第二种实施方式，第一条件包括降低后的优先级满足第二门限。那么S1103具体可以是，第一UE确定降低后的优先级是否满足第二门限。如果降低后的优先级满足第二门限，表明第一消息满足第一条件，而如果降低后的优先级不满足第二门限，表明第一消息不满足第一条件。第二门限例如为第一优先级，一个优先级满足第二门限，例如为该优先级低于或等于第二门限，一个优先级不满足第二门限，例如为该优先级高于第二门限。第二门限由第一UE确定，或预配置在第一UE中，或通过协议规定，或由网络设备配置。
作为第一条件的第三种实施方式，第一条件包括第一消息的信号强度小于第一信号强度门限。那么S1503具体可以是，第一UE确定第一消息的信号强度是否小于第一信号强度门限。如果第一消息的信号强度小于第一信号强度门限，表明第一消息满足第一条件，而如果第一消息的信号强度大于或等于第一信号强度门限，表明第一消息不满足第一条件。第一信号强度门限由第一UE确定，或预配置在第一UE中，或通过协议规定，或由网络设备配置。例如，第一信号强度门限根据提高后的优先级和/或第一数据的优先级确定。第一信号强度门限例如包括RSRP的取值和/或RSRQ的取值，或者还可以包括其他参数的取值。如果第一条件采用这种实现方式，则可选的，也可以不必执行S1502，即，第一UE可不必提高第一消息所指示的优先级，而是确定第一消息的信号强度是否小于第一信号强度门限即可。
也就是说，第一UE可以将第一数据的优先级与降低后的优先级进行比较，也可以将第一门限与降低后的优先级进行比较，或者可以将第一消息的信号强度与第一信号强度门限比较，实现方式较为灵活。
第一条件的如上三种实施方式可以单独使用，或者，如上三种实施方式中的任意两种或三种也可以结合应用。例如，第一条件的第一种实施方式与第三种实施方式可结合，那么第一条件包括第一数据的优先级高于降低后的优先级，以及包括第一消息的信号强度小于第一信号强度门限。则S1503具体可以是，第一UE确定第一数据的优先级是否高于降低后的优先级，以及确定第一消息的信号强度是否小于第一信号强度门限。如果第一数据的优先级高于降低后的优先级，且第一消息的信号强度小于第一信号强度门限，表明第一消息满足第一条件；而如果第一数据的优先级低于或等于降低后的优先级，和/或第一消息的信号强度大于或等于第一信号强度门限，表明第一消息不满足第一条件。如上三种实施方式中如果其他的两种或三种方式相结合，结合方式也是类似的。
S1504、当第一消息满足第一条件时，第一UE在第一子资源池内发送第二消息。而当第一消息不满足第一条件时，第一UE在第一子资源池内不发送第二消息。关于第一消息在何种情况下满足第一条件以及在何种情况下不满足第一条件，可参考S1503的介绍。
相应的，第二UE从第一UE接收第二消息。可选的，第二消息可携带第三指示信息，第三指示信息可指示第三指示信息的发送端是第一类型的UE，则通过第二消息携带第三指示信息，可指示第一UE是第一类型的UE。
其中，第一UE不发送第二消息，也就是不抢占第一资源。
第二消息例如通过广播方式发送，第二消息也用于预约第一资源，此时第二消息可视为抢占消息。也就是说，通过降低第一消息所指示的优先级，可尽量保证第一类型的UE使用第一子资源池内的资源。但如果第一消息不满足第一条件，则非第一类型的UE就可以抢占第一子资源池内的资源，以尽量保证较高优先级的数据的发送。且非第一类型的UE也是在第一子资源池内发送抢占消息，使得第一类型的UE能够监听到该抢占消息，从而减少资源碰撞。而如果第一消息不满足第一条件，则第一UE就不抢占第一资源，此时，第一UE可以继续发送消息以预约除了第一资源外的其他资源以发送第一数据，或者第一UE也可以不预约资源，不发送第一数据。
可选的，如果第一UE是第二类型的UE(关于第二类型的介绍可参考前述实施例)，且数据A的接收端是第三类型的UE，那么可执行图9所示的实施例、图11所示的实施例、图13所示的实施例或图14所示的实施例中的任一个实施例的方案。而如果第一UE是第二类型的UE，且数据A的接收端是第一类型的UE(关于第一类型的介绍可参考前述实施例)，那么可不必执行图11所示的实施例、图13所示的实施例或图14所示的实施例中的一个或多个，第一UE即使在第一子资源池中也可以正常预约资源以及发送数据A。其中，第三类型例如为非带宽有限类型，例如部分感知类型、完全感知类型、或随机资源选择类型等。第二类型与第三类型可以是同一类型，例如第二类型和第三类型均为完全感知类型；或者第二类型与第三类型也可以是不同的类型，例如第二类型为完全感知类型，第三类型为部分感知类型。数据A是第一UE要通过第一UE所预约的资源发送的数据(例如图11所示的实施例或图13所示的实施例或图14所示的实施例中的第一数据与数据A是指同一数据)。如果数据A的接收端是第一类型的UE，则第一UE占用第一子资源池内的资源是为了向第一类型的UE发送数据，那么第一UE所预约的资源也相当于是被第一类型的UE使用，则第一UE正常发送即可。
如上图2所示的实施例、图5所示的实施例、图6所示的实施例、或图15所示的实施例中的任意一个或多个实施例可结合应用，例如图2所示的实施例、图5所示的实施例、图6所示的实施例、以及图15所示的实施例可结合，例如如上各个实施例所述的第一UE是同一UE；或者，图2所示的实施例、图5所示的实施例、图6所示的实施例、以及图15所示的实施例也可以不结合，而是分别作为独立的方案。
如上图9所示的实施例、图11所示的实施例、图13所示的实施例或图14所示的实施例中的任意一个或多个实施例可结合应用，例如图9所示的实施例、图11所示的实施例、图13所示的实施例以及图14所示的实施例可结合，例如如上各个实施例所述的第一UE是同一UE；或者，图9所示的实施例、图11所示的实施例、图13所示的实施例以及图14所示的实施例也可以不结合，而是分别作为独立的方案。
图16给出了本申请实施例提供的一种通信装置1600的结构示意图。通信装置1600可以是图2所示的实施例、图5所示的实施例、图6所示的实施例、图9所示的实施例、图11所示的实施例、图13所示的实施例、图14所示的实施例或图15所示的实施例中的任一个实施例所述的第一UE，用于实现上述方法实施例中第一UE所执行的方法。具体的功能可以参见上述方法实施例中的说明。
通信装置1600包括一个或多个处理器1601。处理器1601也可以称为处理单元，可以实现一定的控制功能。所述处理器1601可以是通用处理器或者专用处理器等。例如，包 括：基带处理器，中央处理器，应用处理器，调制解调处理器，图形处理器，图像信号处理器，数字信号处理器，视频编解码处理器，控制器，存储器，和/或神经网络处理器等。所述基带处理器可以用于对通信协议以及通信数据进行处理。所述中央处理器可以用于对通信装置1600进行控制，执行软件程序和/或处理数据。不同的处理器可以是独立的器件，也可以是集成在一个或多个处理器中，例如，集成在一个或多个专用集成电路上。
可选的，通信装置1600中包括一个或多个存储器1602，用于存储指令1604，所述指令1604可在所述处理器上被运行，使得通信装置1600执行上述方法实施例中描述的方法。可选的，所述存储器1602中还可以存储有数据。所述处理器和存储器可以单独设置，也可以集成在一起。
可选的，通信装置1600可以存储指令1603(有时也可以称为代码或程序)，所述指令1603可以在所述处理器上被运行，使得所述通信装置1600执行上述实施例中描述的方法。处理器1601中可以存储数据。
可选的，通信装置1600还可以包括收发器1605以及天线1606。所述收发器1605可以称为收发单元、收发机、收发电路、收发器，输入输出接口等，用于通过天线1606实现通信装置1600的收发功能。
可选的，通信装置1600还可以包括以下一个或多个部件：无线通信模块，音频模块，外部存储器接口，内部存储器，通用串行总线(universal serial bus，USB)接口，电源管理模块，天线，扬声器，麦克风，输入输出模块，传感器模块，马达，摄像头，或显示屏等等。可以理解，在一些实施例中，通信装置1600可以包括更多或更少部件，或者某些部件集成，或者某些部件拆分。这些部件可以是硬件，软件，或者软件和硬件的组合实现。
本申请实施例中描述的处理器1601和收发器1605可实现在集成电路(integrated circuit，IC)、模拟IC、射频集成电路(radio frequency identification，RFID)、混合信号IC、专用集成电路(application specific integrated circuit，ASIC)、印刷电路板(printed circuit board，PCB)、或电子设备等上。实现本文描述的通信装置，可以是独立设备(例如，独立的集成电路，手机等)，或者可以是较大设备中的一部分(例如,可嵌入在其他设备内的模块)，具体可以参照前述关于终端设备，以及网络设备的说明，在此不再赘述。
本申请实施例提供了一种终端设备，该终端设备(为描述方便，称为UE)可用于前述各个实施例中。所述终端设备包括用于实现图2所示的实施例、图5所示的实施例、图6所示的实施例、图9所示的实施例、图11所示的实施例、图13所示的实施例、图14所示的实施例或图15所示的实施例中的任一个实施例所述的第一UE功能的相应的手段(means)、单元和/或电路。例如，终端设备，包括收发模块，用以支持终端设备实现收发功能，和，处理模块，用以支持终端设备对信号进行处理。
图17给出了本申请实施例提供的一种终端设备的结构示意图。
该终端设备1700可适用于图1、图4、或图8所示的架构中。为了便于说明，图17仅示出了终端设备1700的主要部件。如图17所示，终端设备1700包括处理器、存储器、控制电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对整个终端设备1700进行控制，执行软件程序，处理软件程序的数据。存储器主要用于存储软件程序和数据。控制电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏，显示屏， 麦克风，键盘等主要用于接收用户输入的数据以及对用户输出数据。
以终端设备1700是手机为例，当终端设备1700开机后，处理器可以读取存储单元中的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至控制电路，控制电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备1700时，控制电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。
本领域技术人员可以理解，为了便于说明，图17仅示出了一个存储器和处理器。在一些实施例中，终端设备1700可以包括多个处理器和存储器。存储器也可以称为存储介质或者存储设备等，本发明实施例对此不做限制。
作为一种可选的实现方式，处理器可以包括基带处理器和中央处理器，基带处理器主要用于对通信协议以及通信数据进行处理，中央处理器主要用于对整个终端设备1700进行控制，执行软件程序，处理软件程序的数据。图17中的处理器集成了基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。终端设备1700可以包括多个基带处理器以适应不同的网络制式，终端设备1700可以包括多个中央处理器以增强其处理能力，终端设备1700的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储单元中，由处理器执行软件程序以实现基带处理功能。
在一个例子中，可以将具有收发功能的天线和控制电路视为终端设备1700的收发单元1710，将具有处理功能的处理器视为终端设备1700的处理单元1720。如图17所示，终端设备1700包括收发单元1710和处理单元1720。收发单元也可以称为收发器、收发机、收发装置等。可选的，可以将收发单元1710中用于实现接收功能的器件视为接收单元，将收发单元1710中用于实现发送功能的器件视为发送单元，即收发单元1710包括接收单元和发送单元。示例性的，接收单元也可以称为接收机、接收器、接收电路等，发送单元可以称为发射机、发射器或者发射电路等。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现 有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的计算机可读存储介质，可以是计算机能够存取的任何可用介质。以此为例但不限于：计算机可读介质可以包括随机存取存储器(random access memory，RAM)、只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦可编程只读存储器(electrically erasable programmable read only memory，EEPROM)、紧凑型光盘只读存储器(compact disc read-only memory，CD-ROM)、通用串行总线闪存盘(universal serial bus flash disk)、移动硬盘、或其他光盘存储、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质。另外，通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)或直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
实施例1.一种通信方法，应用于第一终端设备，所述第一终端设备为第一类型的终端设备，所述方法包括：
确定第一信息，所述第一信息用于指示第一资源池的参考频域位置，所述第一资源池是配置给所述第一类型的终端设备的资源池，所述参考频域位置包括所述第一资源池的起始频域位置、结束频域位置、或中间频域位置中的一项或多项；
根据所述参考频域位置以及第二信息，确定所述第一资源池的频域范围，所述第二信息包括如下一项或多项：所述第一类型的终端设备支持的带宽，一个子信道的带宽，或，所述第一资源池占用的子信道的个数。
实施例2.根据实施例1所述的方法，
所述参考频域位置为侧行同步信号所在的子信道的频域位置；或，
所述参考频域位置为侧行同步信号所在的频率最低的子载波的频域位置；或，
所述参考频域位置为侧行同步信号所在的频率最高的子载波的频域位置；或，
所述参考频域位置为侧行同步信号所占用的第一子载波的频域位置。
实施例3.根据实施例2所述的方法，所述第一子载波为第66个或第67个子载波。
实施例4.根据实施例1～3任一项所述的方法，所述第一资源池的频域范围包括侧行同步信号的频域位置。
实施例5.根据实施例1～4任一项所述的方法，确定第一信息，包括：
从网络设备接收所述第一信息，所述第一信息还包括第一指示信息，所述第一指示信息用于指示所述第一资源池适用于所述第一类型的终端设备。
实施例6.根据实施例1～5任一项所述的方法，所述第一资源池的带宽小于或等于所述第一类型的终端设备支持的带宽。
实施例7.根据实施例1～6任一项所述的方法，所述第一类型的终端设备为带宽有限的终端设备。
实施例8.一种通信方法，应用于第一终端设备，所述方法包括：
向网络设备发送第一请求消息，所述第一请求消息用于请求资源，所述资源用于向第二终端设备发送数据，以及，所述第一请求消息包括第二指示信息，所述第二指示信息用于指示所述第一终端设备和/或第二终端设备为第一类型的终端设备，或指示所述第一终端设备和/或第二终端设备支持的频带，或指示所述第一终端设备和/或第二终端设备支持的带宽，或者，所述第二指示信息包括所述第二终端设备的标识或索引；
从所述网络设备接收第一响应消息，所述第一响应消息用于指示第一资源。
实施例9.根据实施例8所述的方法，所述第二指示信息包括所述第二终端设备的标识或索引，用于指示所述第二终端设备为所述第一类型的终端设备。
实施例10.根据实施例8或9所述的方法，所述第一类型的终端设备为降低能力终端设备。
实施例11.根据实施例8～10任一项所述的方法，
所述第二指示信息包括所述第二终端设备的标识或索引，所述方法还包括：向所述网络设备发送第三信息，所述第三信息包括所述第一终端设备的至少一个接收终端设备的信息，所述至少一个接收终端设备包括所述第二终端设备，所述第三信息包括的一个接收终端设备的信息包括所述接收终端设备的标识以及所述标识对应的索引，或，所述第三信息包括的一个接收终端设备的信息包括所述接收终端设备的索引以及所述接收终端设备的能力信息，所述接收终端设备的索引用于所述网络设备确定所述接收终端设备的能力，所述接收终端设备的能力用于指示所述接收终端设备是否为所述第一类型的终端设备。
实施例12.根据实施例8～11任一项所述的终端设备，所述方法还包括：
向所述网络设备发送所述第一终端设备的能力信息，所述第一终端设备的能力信息用于确定所述第一终端设备是否为所述第一类型的终端设备。
实施例13.根据实施例8～12任一项所述的终端设备，所述第一资源的频域位置位于所述第二终端设备支持的频带内。
实施例14.一种通信方法，应用于第一终端设备，所述方法包括：
发送M个消息，所述M个消息中的N个消息所预约的资源位于第一资源池内，所述N个消息中有至少一个消息的频域位置位于所述第一资源池内，所述第一资源池是配置给第一类型的终端设备的资源池，M和N均为正整数，且N小于或等于M。
实施例15.根据实施例14所述的方法，所述至少一个消息包括所述M个消息中在时域上的第1个消息。
实施例16.根据实施例14或15所述的方法，所述N个消息的频域位置均位于所述第一资源池内。
实施例17.一种通信方法，应用于第一终端设备，所述方法包括：
发送消息，所述消息用于预约资源，所述消息的频域位置位于第一资源池外，所述第一资源池是配置给第一类型的终端设备的资源池，所述消息所预约的资源不包括所述第一资源池内的资源。
实施例18.一种通信方法，应用于第一终端设备，所述方法包括：
从第二终端设备接收第一消息，所述第一消息用于预约第一资源，以及，所述第一消息包括第三指示信息，所述第三指示信息用于指示所述第二终端设备为第一类型的终端设备；
提高所述第一消息指示的优先级；
确定第一数据的优先级高于提高后的所述优先级，或确定提高后的所述优先级满足第一门限，其中，所述第一数据为待通过所述第二消息所预约的所述第一资源发送的数据；
在第一资源池内发送第二消息，所述第二消息用于预约所述第一资源，所述第一资源池是配置给所述第一类型的终端设备的资源池。
实施例19.根据实施例18所述的方法，所述第一终端设备为第二类型的终端设备。
实施例20.一种通信方法，应用于第一终端设备，所述方法包括：
降低第一数据的优先级；
发送消息，所述消息用于为所述第一数据预约资源，所述资源的频域位置位于第一资源池内，所述第一终端设备为第二类型的终端设备，所述第一资源池是配置给第一类型的终端设备的资源池。
实施例21.一种通信方法，应用于第一终端设备，所述方法包括：
发送第一消息，所述第一消息用于预约第一资源，所述第一资源的频域位置位于第一资源池内，所述第一终端设备为第二类型的终端设备，所述第一资源池是配置给第一类型的终端设备的资源池；
从第二终端设备接收第二消息，所述第二消息用于预约第二资源，所述第二消息包括第三指示信息，所述第三指示信息用于指示所述第二终端设备为所述第一类型的终端设备；
如果所述第一资源与所述第二资源有交集，不在所述第一资源与所述第二资源的交集资源上发送数据，或，不在所述第一资源上发送数据。
实施例22.根据实施例21所述的方法，不在所述第一资源上发送数据，包括：
将所述第一资源从候选资源中排除，所述候选资源用于发送数据。
实施例23.根据实施例21或22所述的方法，第二资源池和所述第一资源池有交集，所述第二资源池为所述第一终端设备使用的资源池。
实施例24.一种通信装置，包括处理单元，所述处理单元用于：
确定第一信息，所述第一信息用于指示第一资源池的参考频域位置，所述第一资源池是配置给第一类型的终端设备的资源池，所述参考频域位置包括所述第一资源池的起始频域位置、结束频域位置、或中间频域位置中的一项或多项；
根据所述参考频域位置以及第二信息，确定所述第一资源池的频域范围，所述第二信息包括如下一项或多项：所述第一类型的终端设备支持的带宽，一个子信道的带宽，或，所述第一资源池占用的子信道的个数。
实施例25.根据实施例24所述的通信装置，
所述参考频域位置为侧行同步信号所在的子信道的频域位置；或，
所述参考频域位置为侧行同步信号所在的频率最低的子载波的频域位置；或，
所述参考频域位置为侧行同步信号所在的频率最高的子载波的频域位置；或，
所述参考频域位置为侧行同步信号所占用的第一子载波的频域位置。
实施例26.根据实施例25所述的通信装置，所述第一子载波为第66个或第67个子载波。
实施例27.根据实施例24～26任一项所述的通信装置，所述第一资源池的频域范围包括侧行同步信号的频域位置。
实施例28.根据实施例24～27任一项所述的通信装置，所述通信装置还包括收发单元， 所述处理单元用于通过如下方式确定第一信息：
通过所述收发单元从网络设备接收所述第一信息，所述第一信息还包括第一指示信息，所述第一指示信息用于指示所述第一资源池适用于所述第一类型的终端设备。
实施例29.根据实施例24～28任一项所述的通信装置，所述第一资源池的带宽小于或等于所述第一类型的终端设备支持的带宽。
实施例30.根据实施例24～29任一项所述的通信装置，所述第一类型的终端设备为带宽有限的终端设备。
实施例31.一种通信装置，包括收发单元，所述收发单元用于：
向网络设备发送第一请求消息，所述第一请求消息用于请求资源，所述资源用于向第二终端设备发送数据，以及，所述第一请求消息包括第二指示信息，所述第二指示信息用于指示所述通信装置和/或第二终端设备为第一类型的终端设备，或指示所述通信装置和/或第二终端设备支持的频带，或指示所述通信装置和/或第二终端设备支持的带宽，或者，所述第二指示信息包括所述第二终端设备的标识或索引；
从所述网络设备接收第一响应消息，所述第一响应消息用于指示第一资源。
实施例32.根据实施例31所述的通信装置，所述第二指示信息包括所述第二终端设备的标识或索引，用于指示所述第二终端设备为所述第一类型的终端设备。
实施例33.根据实施例31或32所述的通信装置，所述第一类型的终端设备为降低能力终端设备。
实施例34.根据实施例31～33任一项所述的通信装置，
所述第二指示信息包括所述第二终端设备的标识或索引，所述方法还包括：向所述网络设备发送第三信息，所述第三信息包括所述通信装置的至少一个接收终端设备的信息，所述至少一个接收终端设备包括所述第二终端设备，所述第三信息包括的一个接收终端设备的信息包括所述接收终端设备的标识以及所述标识对应的索引，或，所述第三信息包括的一个接收终端设备的信息包括所述接收终端设备的索引以及所述接收终端设备的能力信息，所述接收终端设备的索引用于所述网络设备确定所述接收终端设备的能力，所述接收终端设备的能力用于指示所述接收终端设备是否为所述第一类型的终端设备。
实施例35.根据实施例31～34任一项所述的终端设备，所述收发单元，还用于向所述网络设备发送所述通信装置的能力信息，所述通信装置的能力信息用于确定所述通信装置是否为所述第一类型的终端设备。
实施例36.根据实施例31～35任一项所述的终端设备，所述第一资源的频域位置位于所述第二终端设备支持的频带内。
实施例37.一种通信装置，包括收发单元，用于发送M个消息，所述M个消息中的N个消息所预约的资源位于第一资源池内，所述N个消息中有至少一个消息的频域位置位于所述第一资源池内，所述第一资源池是配置给第一类型的终端设备的资源池，M和N均为正整数，且N小于或等于M。
实施例38.根据实施例37所述的通信装置，所述至少一个消息包括所述M个消息中在时域上的第1个消息。
实施例39.根据实施例14或15所述的通信装置，所述N个消息的频域位置均位于所述第一资源池内。
实施例40.一种通信装置，包括收发单元，用于发送消息，所述消息用于预约资源， 所述消息的频域位置位于第一资源池外，所述第一资源池是配置给第一类型的终端设备的资源池，所述消息所预约的资源不包括所述第一资源池内的资源。
实施例41.一种通信装置，包括收发单元和处理单元，其中，
所述收发单元，用于从第二终端设备接收第一消息，所述第一消息用于预约第一资源，以及，所述第一消息包括第三指示信息，所述第三指示信息用于指示所述第二终端设备为第一类型的终端设备；
所述处理单元，用于提高所述第一消息指示的优先级；
所述处理单元，还用于确定第一数据的优先级高于提高后的所述优先级，或确定提高后的所述优先级满足第一门限，其中，所述第一数据为待通过所述第二消息所预约的所述第一资源发送的数据；
所述收发单元，还用于在第一资源池内发送第二消息，所述第二消息用于预约所述第一资源，所述第一资源池是配置给所述第一类型的终端设备的资源池。
实施例42.根据实施例41所述的通信装置，所述通信装置为第二类型的通信装置。
实施例43.一种通信装置，包括收发单元和处理单元，其中，
所述处理单元，用于降低第一数据的优先级；
所述收发单元，用于发送消息，所述消息用于为所述第一数据预约资源，所述资源的频域位置位于第一资源池内，所述通信装置为第二类型的通信装置，所述第一资源池是配置给第一类型的终端设备的资源池。
实施例44.一种通信装置，包括收发单元和处理单元，其中，
所述收发单元，用于发送第一消息，所述第一消息用于预约第一资源，所述第一资源的频域位置位于第一资源池内，所述通信装置为第二类型的通信装置，所述第一资源池是配置给第一类型的终端设备的资源池；
所述收发单元，还用于从第二终端设备接收第二消息，所述第二消息用于预约第二资源，所述第二消息包括第三指示信息，所述第三指示信息用于指示所述第二终端设备为所述第一类型的终端设备；
所述处理单元，用于如果确定所述第一资源与所述第二资源有交集，不在所述第一资源与所述第二资源的交集资源上发送数据，或，不在所述第一资源上发送数据。
实施例45.根据实施例44所述的通信装置，所述处理单元用于通过如下方式不在所述第一资源上发送数据：
将所述第一资源从候选资源中排除，所述候选资源用于发送数据。
实施例46.根据实施例44或45所述的通信装置，第二资源池和所述第一资源池有交集，所述第二资源池为所述通信装置使用的资源池。
实施例47.一种通信方法，应用于第一终端设备，所述方法包括：
从第二终端设备接收第一消息，所述第一消息用于预约第一资源；
如果所述第一消息不包括第三指示信息，则降低所述第一消息指示的优先级，所述第三指示信息用于指示所述第三指示信息的发送端为第一类型的终端设备；
确定第一数据的优先级高于降低后的所述优先级，或确定降低后的所述优先级满足第二门限，其中，所述第一数据为待发送的数据；
在所述第一资源池内发送第二消息，所述第二消息用于预约所述第一资源。
实施例48.根据实施例47所述的方法，所述第二消息还包括所述第三指示信息。
实施例49.根据实施例47或48所述的方法，所述第一终端设备为第一类型的终端设备。
实施例50.根据实施例47～49任一项所述的方法，所述第一类型的终端设备为带宽有限的终端设备。
实施例51.一种通信装置，包括收发单元和处理单元，其中，
所述收发单元，用于从第二终端设备接收第一消息，所述第一消息用于预约第一资源；
所述处理单元，用于如果所述第一消息不包括第三指示信息，则降低所述第一消息指示的优先级，所述第三指示信息用于指示所述第三指示信息的发送端为第一类型的终端设备；
所述处理单元，还用于确定第一数据的优先级高于降低后的所述优先级，或确定降低后的所述优先级满足第二门限，其中，所述第一数据为待发送的数据；
所述收发单元，还用于在所述第一资源池内发送第二消息，所述第二消息用于预约所述第一资源。
实施例52.根据实施例51所述的通信装置，所述第二消息还包括所述第三指示信息。
实施例53.根据实施例51或52所述的通信装置，所述通信装置为第一类型的通信装置。
实施例54.根据实施例51～53任一项所述的通信装置，所述第一类型的通信装置为带宽有限的通信装置。
实施例55.一种装置，包含用于执行本申请任一实施例所介绍的方法的单元。
实施例56.一种计算机程序产品，所述计算机程序产品包括计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如实施例1～7中任一项所述的方法，或使得所述计算机执行如实施例8～13中任一项所述的方法，或使得所述计算机执行如实施例14～16中任一项所述的方法，或使得所述计算机执行如实施例17所述的方法，或使得所述计算机执行如实施例18～19中任一项所述的方法，或使得所述计算机执行如实施例20所述的方法，或使得所述计算机执行如实施例21～23中任一项所述的方法，或使得所述计算机执行如实施例47～50中任一项所述的方法。

Claims (17)

  1. 一种通信方法，其特征在于，应用于第一终端设备，所述第一终端设备是第一类型的终端设备，所述方法包括：
    确定第一信息，所述第一信息用于指示第一资源池的参考频域位置，所述第一资源池是配置给所述第一类型的终端设备的资源池，所述参考频域位置包括所述第一资源池的起始频域位置、结束频域位置、或中间频域位置中的一项或多项；
    根据所述参考频域位置以及第二信息，确定所述第一资源池的频域范围，所述第二信息包括如下一项或多项：所述第一类型的终端设备支持的带宽，一个子信道的带宽，或，所述第一资源池占用的子信道的个数。
  2. 根据权利要求1所述的方法，其特征在于，
    所述参考频域位置为侧行同步信号所在的子信道的频域位置；或，
    所述参考频域位置为侧行同步信号所在的频率最低的子载波的频域位置；或，
    所述参考频域位置为侧行同步信号所在的频率最高的子载波的频域位置；或，
    所述参考频域位置为侧行同步信号所占用的第一子载波的频域位置。
  3. 根据权利要求2所述的方法，其特征在于，所述第一子载波为第66个或第67个子载波。
  4. 根据权利要求1～3任一项所述的方法，其特征在于，所述第一资源池的频域范围包括侧行同步信号的频域位置。
  5. 根据权利要求1～4任一项所述的方法，其特征在于，确定第一信息，包括：
    从网络设备接收所述第一信息，所述第一信息还包括第一指示信息，所述第一指示信息用于指示所述第一资源池适用于所述第一类型的终端设备。
  6. 根据权利要求1～5任一项所述的方法，其特征在于，所述第一资源池的带宽小于或等于所述第一类型的终端设备支持的带宽。
  7. 根据权利要求1～6任一项所述的方法，其特征在于，所述第一类型的终端设备为带宽有限的终端设备。
  8. 根据权利要求1～7任一项所述的方法，其特征在于，所述方法还包括：
    向网络设备发送第一请求消息，所述第一请求消息用于请求资源，所述资源用于向第二终端设备发送数据，以及，所述第一请求消息包括第二指示信息，所述第二指示信息用于指示所述第一终端设备和/或第二终端设备为第一类型的终端设备，或指示所述第一终端设备和/或第二终端设备支持的频带，或指示所述第一终端设备和/或第二终端设备支持的带宽，或者，所述第二指示信息包括所述第二终端设备的标识或索引；
    从所述网络设备接收第一响应消息，所述第一响应消息用于指示第一资源。
  9. 根据权利要求8所述的方法，其特征在于，所述第二指示信息包括所述第二终端设备的标识或索引，用于指示所述第二终端设备为所述第一类型的终端设备。
  10. 根据权利要求8或9所述的方法，其特征在于，
    所述第二指示信息包括所述第二终端设备的标识或索引，所述方法还包括：向所述网络设备发送第三信息，所述第三信息包括所述第一终端设备的至少一个接收终端设备的信息，所述至少一个接收终端设备包括所述第二终端设备，所述第三信息包括的一个接收终端设备的信息包括所述接收终端设备的标识以及所述标识对应的索引，或，所述第三信息 包括的一个接收终端设备的信息包括所述接收终端设备的索引以及所述接收终端设备的能力信息，所述接收终端设备的索引用于所述网络设备确定所述接收终端设备的能力，所述接收终端设备的能力用于指示所述接收终端设备是否为所述第一类型的终端设备。
  11. 根据权利要求8～10任一项所述的终端设备，其特征在于，所述方法还包括：
    向所述网络设备发送所述第一终端设备的能力信息，所述第一终端设备的能力信息用于确定所述第一终端设备是否为所述第一类型的终端设备。
  12. 根据权利要求8～11任一项所述的终端设备，其特征在于，所述第一资源的频域位置位于所述第二终端设备支持的频带内。
  13. 根据权利要求1～7任一项所述的方法，其特征在于，所述方法还包括：
    从第二终端设备接收第一消息，所述第一消息用于预约第一资源；
    如果所述第一消息不包括第三指示信息，则降低所述第一消息指示的优先级，所述第三指示信息用于指示所述第三指示信息的发送端为第一类型的终端设备；
    确定第一数据的优先级高于降低后的所述优先级，或确定降低后的所述优先级满足第二门限，其中，所述第一数据为待发送的数据；
    在所述第一资源池内发送第二消息，所述第二消息用于预约所述第一资源。
  14. 根据权利要求13所述的方法，其特征在于，所述第二消息还包括所述第三指示信息。
  15. 一种通信设备，其特征在于，包括：
    一个或多个处理器；
    一个或多个存储器；
    以及一个或多个计算机程序，其中所述一个或多个计算机程序被存储在所述一个或多个存储器中，所述一个或多个计算机程序包括指令，当所述指令被所述通信设备的一个或多个处理器执行时，使得所述通信设备执行如权利要求1～14中任一项所述的方法。
  16. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质用于存储计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1～14中任一项所述的方法。
  17. 一种芯片，其特征在于，包括一个或多个处理器和通信接口，所述一个或多个处理器用于读取指令，以执行如权利要求1～14中任一项所述的方法。
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