A communication method and a communication device

Abstract

The application discloses a communication method and a communication device. The method comprises: a first terminal device determines an occupancy rate of at least one resource in a first resource pool; when the proportion of the resource in the candidate resource set in the first resource pool is less than a first threshold, and the occupancy rate is greater than or equal to a second threshold, the RSRP threshold corresponding to the first resource or the second resource is raised. The first resource is a resource indicated by SCI sent by the first terminal device, and the sidelink control information sent by the first terminal device is information using NR wireless access. The second resource is a resource indicated by SCI sent by the second terminal device. The at least one resource comprises a resource used by the second terminal device to send information using E-UTRA wireless access. When the first terminal device and the second terminal device share the resource in the first resource pool, the method can reduce the influence on the transmission performance of the first terminal device or the second terminal device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sidelink, and particularly relates to a communication method and a communication device in sidelink. BACKGROUND

[0002] The terminal device in the 3rd generation partnership project (3 rd Generation Partnership Project, 3GPP) Release 16 supports coexistence of long term evolution (LTE) vehicle to everything (V2X) (referred to as LTE-V2X) communication module and new radio (NR) V2X (referred to as NR-V2X) communication module. That is, the terminal device in the 3GPP Release 16 includes an LTE-V2X terminal device and an NR-V2X terminal device. The sidelink information sent by the LTE-V2X communication module is information using evolved universal terrestrial radio access (E-UTRA) wireless access, also referred to as LTE sidelink information, and referred to as LTE sidelink information for short. The sidelink information sent by the NR-V2X is information using NR wireless access, also referred to as NR sidelink information, and referred to as NR sidelink information for short.

[0003] Before sending the sidelink information, the terminal device can select a resource for sending the sidelink information in a resource pool configured for the terminal device. In the resource selection process, if there are few resources left in the resource pool after excluding the unavailable resources, the threshold (for example, a reference signal receiving power (RSRP) threshold) for resource selection / resource exclusion can be raised, so as to exclude less resources, so that more resources can be selected.

[0004] In order to improve resource utilization, a network device configures a common resource pool for LTE-V2X terminal devices and NR-V2X terminal devices. The LTE-V2X terminal device selects resources in the common resource pool for sending LTE sidelink information. If the RSRP threshold of the common resource pool is raised in the resource selection process, the LTE-V2X terminal device may select the resources reserved by the NR-V2X terminal device in the common resource pool as candidate resources. In this case, since the NR-V2X terminal device can also use the reserved resources, once the NR-V2X terminal device selects the reserved resources, the actually available resources of the LTE-V2X terminal device will be less, and the transmission performance of the LTE-V2X terminal device will be affected. Similarly, when the NR-V2X terminal device selects resources in the common resource pool for sending NR sidelink information, if the RSRP threshold of the common resource pool is raised, the NR-V2X terminal device may select the resources reserved by the LTE-V2X terminal device as candidate resources, which affects the transmission performance of the NR-V2X terminal device. SUMMARY

[0005] The present application provides a communication method and a communication device, which can reasonably raise the RSRP threshold corresponding to the resources of the LTE-V2X communication module and / or the RSRP threshold corresponding to the resources of the NR-V2X communication module, so as to reduce the influence on the transmission performance of the LTE-V2X communication module and the NR-V2X communication module.

[0006] In a first aspect, a communication method is provided, which can be executed by a first communication device. The first communication device can be a communication device or a communication device capable of supporting the functions required by the communication device to implement the method, such as a chip system. Illustratively, the first communication device is a first terminal device, or a chip provided in the first terminal device, or other components for implementing the functions of the first terminal device. Hereinafter, the first communication device is taken as an example of the first terminal device itself.

[0007] The communication method comprises: determining, by the first terminal device, an occupation rate of at least one resource in a first resource pool; when the proportion of resources in the candidate resource set in the first resource pool is less than a first threshold, and the occupation rate is greater than or equal to a second threshold, the RSRP threshold corresponding to the first resource or the second resource in the first resource pool is raised. The first resource is a resource indicated by sidelink control information (SCI) sent by the first terminal device, and the sidelink control information sent by the first terminal device is information using NR wireless access. The second resource is a resource indicated by SCI sent by the second terminal device, and the sidelink control information sent by the second terminal device is information using E-UTRA wireless access. The first resource pool is indicated by configuration information, for example, the network device configures the first resource pool for the first terminal device, and the first resource pool is also configured for the second terminal device, that is, the first resource pool is a resource pool shared by the first terminal device and the second terminal device. Alternatively, the first resource pool can also be a resource pool formed by the resource pool configured by the network device for the first terminal device and the resource pool configured by the base station for the second terminal device. Alternatively, the first resource is a pre-configured resource pool, and the first resource pool is a resource pool configured for the first terminal device, wherein all or part of the resources are also configured for the second terminal device.

[0008] The at least one resource comprises a resource used by the second terminal device to send information using E-UTRA wireless access, and the set of the at least one resource is referred to as a first resource set. The candidate resource set is a resource set obtained by excluding resources from the first resource pool. The RSRP threshold is used to determine available resources, for example, to determine resources that can be used by the third terminal device to send information using NR wireless access. It can be understood that, before any terminal device sends sidelink information, resource exclusion can be performed in the configured resource pool according to the RSRP threshold, and the remaining resources after excluding the unavailable resources form the candidate resource set. It can be understood that, for a certain resource, whether the resource needs to be excluded is determined by comparing the RSRP value obtained by measuring the DMRS on the resource with the threshold value corresponding to the priority.

[0009] The information using NR radio access refers to sidelink information implemented based on the NR technology, that is, information transmitted using an NR-V2X communication module. The information using NR radio access is also referred to as NR sidelink information or NR information. The information using E-UTRA radio access refers to sidelink information implemented based on the LTE technology, that is, information transmitted using an LTE-V2X communication module. The first terminal device transmits NR sidelink information, and it can be considered that the first terminal device is a terminal device based on NR-V2X communication. The second terminal device transmits LTE sidelink information, and it can be considered that the second terminal device is a terminal device based on LTE-V2X communication. The first resource pool includes resources shared by the first terminal device and the second terminal device, that is, any second terminal device can use part or all of the resources in the first resource pool to transmit LTE sidelink information, and any first terminal device can use part or all of the resources in the first resource pool to transmit NR sidelink information. Before transmitting NR sidelink information, the first terminal device needs to exclude resources from the first resource pool to determine a candidate resource set. When the proportion of resources in the candidate resource set in the first resource pool is less than a first threshold, for example, 20%, the RSRP threshold for resource exclusion is increased, and resource exclusion is performed again.

[0010] In the embodiments of the present application, when the proportion of resources in the candidate resource set in the first resource pool is less than the first threshold, and the occupancy rate of the first resource set in the first resource pool is greater than or equal to the second threshold, it can be considered that the LTE communication device itself has a relatively high demand for resources, and the RSRP threshold corresponding to the resources (first resources) of the NR communication module can be increased. The first resources are resources occupied and / or reserved by NR sidelink information. Through this scheme, the LTE communication module can select more available resources, and the impact on the transmission performance of the LTE communication module can be reduced. In addition, since the demand of the NR communication module for resources is relatively low, compared with increasing the RSRP threshold corresponding to all resources, the probability of resource conflict can be reduced by increasing the RSRP threshold corresponding to the first resources.

[0011] Alternatively, the LTE communication device itself has a relatively high demand for resources, and the RSRP threshold corresponding to the resources (second resources) of the LTE communication module can also be increased. The second resources are resources occupied or reserved by LTE sidelink information. Through this scheme, the NR communication module can select more available resources, and the impact on the transmission performance of the NR communication module can be reduced. For example, the information that needs to be transmitted by the NR communication device can be critical information, and by increasing the RSRP threshold corresponding to the second resources, the reliability of the transmission of the NR communication device can be improved.

[0012] In a possible implementation, the occupation ratio is a channel busy ratio (CBR), which is a proportion of resources in the first resource pool on which a received signal strength indicator (RSSI) is greater than a first RSSI threshold, the resources on which the RSSI is greater than the first RSSI threshold being resources used by the second terminal device to send information based on E-UTRA radio access. When the RSSI of a resource is greater than a certain threshold, the resource can be occupied or reserved. In this scheme, the resources on which the RSSI is greater than the first RSSI threshold are resources occupied and / or reserved by the at least one second terminal device for sending LTE sidelink information, and the occupation ratio is determined.

[0013] In a possible implementation, the occupation ratio is a ratio of a number of resources in the first window used by the second terminal device to send LTE sidelink information to a total number of resources in the first resource pool included in the first window. The length of the first window is configured, or preconfigured, or predefined. In this scheme, information received in the first window can be decoded, so that the number of resources in the first window occupied and / or reserved by the at least one second terminal device for sending LTE sidelink information can be determined, and the occupation ratio can be determined.

[0014] In a possible implementation, the occupation ratio is further determined by resources in the first resource pool used by the at least one second terminal device to send information based on E-UTRA radio access. In this scheme, when determining the occupation ratio of the first resource set in the first resource pool, the resources in the first resource pool used by the at least one second terminal device to send LTE sidelink information are also considered.

[0015] In a second aspect, a communication method is provided, which can be performed by a first communication device. The first communication device can be a communication apparatus or a communication device, such as a chip system, capable of supporting the first communication device to implement functions required by the method. For example, the first communication device is a first terminal device, or a chip provided in the first terminal device, or other components used to implement functions of the first terminal device. Hereinafter, the first communication device is taken as an example of the first terminal device.

[0016] The communication method comprises: when a proportion of resources in the candidate resource set in the first resource pool is less than a first threshold, a RSRP threshold corresponding to the first resource is raised. The first resource pool comprises resources shared by the first terminal device and the second terminal device. The candidate resource set is a resource set obtained by performing resource exclusion on the first resource pool. The RSRP threshold is used to determine available resources, and the available resources can be used to send information using NR radio access. The first resource is a resource indicated by SCI sent by the first terminal device, and the sidelink information sent by the first terminal device is information using NR radio access. The sidelink information sent by the second terminal device is information using E-UTRA radio access.

[0017] In this scheme, before the first terminal device sends the NR sidelink information, the RSRP threshold corresponding to the first resource is raised by default when performing resource exclusion. That is, the RSRP threshold corresponding to the resource occupied or reserved by the NR sidelink information is raised by default. Through this scheme, the impact on the transmission performance of the first terminal device can be reduced, and the probability of resource conflict between the first terminal device and the second terminal device can be reduced.

[0018] In a third aspect, a communication method is provided, which can be performed by a first communication device. The first communication device can be a communication apparatus or a communication device capable of supporting the functions required by the communication apparatus to implement the method, such as a chip system. Exemplarily, the first communication device is a first terminal device, or a chip arranged in the first terminal device, or other components for implementing the functions of the first terminal device. Hereinafter, the first communication device is exemplarily taken as the first terminal device itself.

[0019] The communication method comprises: when a proportion of resources in the candidate resource set in the first resource pool is less than a first threshold, a RSRP threshold corresponding to the first resource is raised. The first resource pool comprises resources shared by the first terminal device and the second terminal device. The candidate resource set is a resource set obtained by performing resource exclusion on the first resource pool. The RSRP threshold is used to determine available resources, and the available resources can be used to send information using NR radio access. The first resource is a resource indicated by SCI sent by the first terminal device, and the sidelink information sent by the first terminal device is information using NR radio access. The sidelink information sent by the second terminal device is information using E-UTRA radio access.

[0020] In this scheme, the RSRP threshold corresponding to the second resource is raised by default when the first terminal device performs resource exclusion. That is, the RSRP threshold corresponding to the resource occupied or reserved by the LTE sidelink information is raised by default. Through this scheme, the transmission reliability of the second terminal device can be improved.

[0021] In a fourth aspect, an embodiment of the present application provides a communication apparatus, which has functions of implementing the behaviors in the method examples of the first aspect. The beneficial effects can be referred to the description of the first aspect, which will not be repeated here. The communication apparatus can be the first terminal apparatus in any of the first aspect to the third aspect, or the communication apparatus can be an apparatus, such as a chip or a chip system, which can support the functions required by the first terminal apparatus in any of the first aspect to the third aspect to implement the method provided in any of the first aspect to the third aspect.

[0022] In a possible design, the communication apparatus includes corresponding means or modules for performing the methods in any of the first aspect to the third aspect. For example, the communication apparatus includes a processing unit (also referred to as a processing module or a processor) and / or a transceiving unit (also referred to as a transceiving module or a transceiver). These units (modules) can perform the corresponding functions in the method examples of the first aspect to the third aspect, which will not be repeated here for brevity, and can be specifically referred to the detailed description in the method examples.

[0023] In a fifth aspect, an embodiment of the present application provides a communication apparatus, which can be the communication apparatus in the fourth aspect of the above-described embodiments, or a chip or a chip system arranged in the communication apparatus in the fourth aspect. The communication apparatus includes a communication interface and a processor, and optionally, a memory. The memory is used to store computer programs or instructions or data, and the processor is coupled with the memory and the communication interface. When the processor reads the computer programs or instructions or data, the communication apparatus performs the method executed by the first terminal apparatus in the above-described method embodiments.

[0024] In a sixth aspect, an embodiment of the present application provides a communication apparatus, which includes an input / output interface and a logic circuit. The input / output interface is used to input and / or output information. The logic circuit is used to perform the method in any of the first aspect to the third aspect.

[0025] In a seventh aspect, an embodiment of the present application provides a chip system, which includes a processor, and can further include a memory and / or a communication interface, and is used to implement the method in any of the first aspect to the third aspect. In a possible implementation, the chip system further includes a memory, which is used to store computer programs. The chip system can be composed of a chip, or can include a chip and other discrete devices.

[0026] In an eighth aspect, an embodiment of the present application provides a communication system, which includes the communication apparatus in the fourth aspect and a second terminal apparatus. Alternatively, the communication system includes the communication apparatus in the fifth aspect and a second terminal apparatus.

[0027] In a ninth aspect, the present application provides a computer readable storage medium, which stores a computer program, when the computer program is executed, the method in any of the first aspect to the third aspect is implemented.

[0028] In a tenth aspect, a computer program product is provided, which comprises computer program code, when the computer program code is executed, the method in any of the first aspect to the third aspect is executed.

[0029] The beneficial effects of the fourth aspect to the tenth aspect and the implementation manners thereof can refer to the description of the beneficial effects of the first aspect to the third aspect, or the first aspect to the third aspect and the implementation manners thereof. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 An exemplary architecture diagram of a communication system to which embodiments of the present application are applicable;

[0031] Figure 2 A schematic diagram of a physical time slot and a logical time slot provided by embodiments of the present application;

[0032] Figure 3 A schematic diagram of a sensing window and a resource selection window provided by embodiments of the present application;

[0033] Figure 4 A schematic diagram of NR-V2X terminal device communication;

[0034] Figure 5 A determination of an occupancy rate of a first resource set in a first resource pool provided by embodiments of the present application;

[0035] Figure 6 A schematic diagram of a resource exclusion process provided by embodiments of the present application;

[0036] Figure 7 A structural schematic diagram of a communication apparatus provided by embodiments of the present application;

[0037] Figure 8 Another structural schematic diagram of a communication apparatus provided by embodiments of the present application. DETAILED DESCRIPTION

[0038] The technical solutions provided in the embodiments of this application can be applied to various communication systems, such as LTE systems, 5G systems (also known as NR systems), or next-generation communication systems, such as 6G systems. Of course, the technical solutions provided in the embodiments of this application can also be applied to other communication systems. For example, the technical solutions provided in the embodiments of this application can also be applied to Internet of Things (IoT) systems, narrowband Internet of Things (NB-IoT) systems, such as IoT or wearable WiFi networks based on wireless fidelity (WiFi). Wearable WiFi networks can be WiFi networks that use terminal devices (e.g., mobile phones) as virtual access points and associated wearable devices. The systems described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application and do not constitute a limitation on the technical solutions provided in the embodiments of this application.

[0039] For example, please refer to Figure 1 This is a network architecture used in the embodiments of this application. Figure 1 It includes 4 terminal devices and 1 network device. Figure 1 The terminal devices in this system can communicate with or without network infrastructure. For ease of description, this article uses... Figure 1 The terminal device in this application is an in-vehicle terminal device, specifically an example of its application in a V2X scenario. This application does not limit the specific form of the terminal device; for example, the terminal device could also be a mobile phone. Figure 1 The four terminal devices are Terminal Device 1, Terminal Device 2, Terminal Device 3, and Terminal Device 4. Any one of these four terminal devices can send information to or receive information from the other three terminal devices in its vicinity. Figure 1 The number of terminal devices mentioned is just an example; in practical applications, a network device can provide services to multiple terminal devices. Figure 1 Taking terminal devices 1 and 2 as examples where there is no network coverage, and terminal devices 3 and 4 as examples where there is network coverage.

[0040] The network device, also referred to as a network equipment, is an access equipment in the mobile communication system through which the terminal device accesses to the system in a wireless manner, including a radio access network (RAN) equipment such as a base station. The network device can also refer to an equipment that communicates with the terminal device over the air. The network device can include an evolved Node B (eNB) in an LTE system or long term evolution-advanced (LTE-A) system, which can be referred to as eNB or e-NodeB. The eNB is a device deployed in a radio access network to meet the 4G standard and provide wireless communication functions for the terminal device. The network device can also be a new radio controller (NR controller), a gNode B (gNB) in a 5G system, a centralized unit, a new radio base station, a radio frequency remote module, a micro base station (also referred to as a small station), a relay, a distributed unit, a macro base station in various forms, a transmission reception point (TRP), a transmission measurement function (TMF) or a transmission point (TP), or any other radio access equipment, and the embodiments of the present application are not limited thereto. The network device can also include a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (for example, a home evolved NodeB or a home Node B, HNB), a base band unit (BBU) or a radio frequency remote unit (RRU), or a Wifi access point (AP), or a base band pool (BBU pool) and RRU in a cloud radio access network (CRAN), etc. The embodiments of the present application do not limit the specific technology and specific equipment form used by the network device. The network device can correspond to an eNB in a 4G system and a gNB in a 5G system. The network device and the network equipment can be replaced unless otherwise specified.

[0041] In addition, the base station in the embodiments of the present application can include a centralized unit (CU) and a distributed unit (DU), and a plurality of DUs can be centrally controlled by one CU. The CU and the DU can be divided according to the protocol layer function of the wireless network they have, for example, the functions of the packet data convergence protocol (PDCP) layer and above protocol layers are arranged in the CU, and the functions of the protocol layer below the PDCP, such as the radio link control (RLC) layer and the medium access control (MAC) layer, are arranged in the DU. It should be noted that the division of the protocol layer is only an example, and other protocol layers can also be divided. The radio frequency device can be remote and not placed in the DU, or integrated in the DU, or partially remote and partially integrated in the DU, and the embodiments of the present application do not make any limitation. In addition, in some embodiments, the control plane (CP) and the user plane (UP) of the CU can also be separated and realized by different entities, respectively, as the control plane CU entity (CU-CP entity) and the user plane CU entity (CU-UP entity). In this network architecture, the signaling generated by the CU can be sent to the terminal device through the DU, or the signaling generated by the UE can be sent to the CU through the DU. The DU can not analyze the signaling and directly transmit it to the terminal device or the CU through protocol layer encapsulation. In this network architecture, the CU is divided into a network device on the RAN side, and in addition, the CU can also be divided as a network device on the core network (CN) side, and the present application does not make any limitation.

[0042] The terminal device, also referred to as a terminal apparatus, has a wireless transceiver function, and can send a signal to a network device or receive a signal from the network device. The terminal device can include a user equipment (UE), a terminal, an access station, a UE station, a remote station, a wireless communication device, or a user device, a chip, and the like. In the embodiments of the present application, the terminal device and the terminal apparatus have the same meaning unless otherwise specified. The terminal device is used to connect people, things, machines, and the like, and can be widely used in various scenarios, such as cellular communication, device-to-device (D2D) communication, V2X, machine-to-machine / machine-type communications (M2M / MTC), internet of things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self driving, remote medical treatment, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, unmanned aerial vehicle, robot, and the like.

[0043] For example, the terminal device in the embodiments of the present application can be a mobile phone, a tablet computer, a computer with a wireless transceiver function, a VR terminal, an AR terminal, a wireless terminal in industrial control, a whole vehicle, a wireless communication module in a whole vehicle, a vehicle-mounted T-box (Telematics BOX), a roadside unit (RSU), a wireless terminal in self driving, a smart speaker in an IoT network, a wireless terminal device in remote medical treatment, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, and the like. As an example but not limitation, in the embodiments of the present application, the terminal device can also be a wearable device. The wearable device can also be referred to as a wearable smart device or a smart wearable device, and the like. The wearable device is a general term of devices that are designed and developed by applying wearable technology to daily wear, such as glasses, gloves, watches, clothes, and shoes, and the like.

[0044] The terminal device can also include a relay. Alternatively, it can be understood that all devices capable of data communication with the base station can be regarded as terminal devices. As introduced above, various terminal devices can be regarded as on-board terminal devices if they are located on a vehicle (for example, placed in or installed in a vehicle), and the on-board terminal device is also referred to as an on-board unit (OBU). The terminal device of the present application can also be an on-board module, an on-board module, an on-board component, an on-board chip or an on-board unit built into a vehicle as one or more components or units, and the vehicle can implement the method of the present application through the built-in on-board module, on-board module, on-board component, on-board chip or on-board unit. Direct communication (PC5) interface communication is supported between terminal devices, that is, transmission through sidelink is supported.

[0045] In addition, in the embodiments of the present application, the terminal device can refer to a device for realizing the function of the terminal device, or a device capable of supporting the terminal device to realize the function, such as a chip system, which can be installed in the terminal device. For example, the terminal device can also be a vehicle detector. In the embodiments of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices. In the technical solutions provided in the embodiments of the present application, the device for realizing the function of the terminal device is taken as an example to describe the technical solutions provided in the embodiments of the present application. The terminal device can be a terminal device, or a chip provided in the terminal device. Unless otherwise specified, the terminal device and the terminal device can be interchangeable.

[0046] In Figure 1 In the system shown, each terminal device can send information based on a sidelink between terminal devices. The sidelink refers to a link established between devices of the same type, which can also be referred to as a side link or a secondary link, etc. The so-called same type of device can be a link between terminal devices to terminal devices, or a link between network devices to network devices, or a link between relay nodes to relay nodes, etc. The embodiments of the present application do not limit this.

[0047] Taking a terminal device and a sidelink between terminal devices as an example, there are device-to-device (D2D) links defined in 3GPP Release (Rel)-12 / 13, and V2X links defined by 3GPP for vehicle-to-everything (V2X). V2X includes direct communication between vehicles, vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P), and vehicle-to-network (V2N) or V2X links to any entity, including Rel-14 / 15. V2X also includes NR system-based V2X links in Rel-16 and later versions currently being studied by 3GPP, etc. V2V refers to communication between vehicles; V2P refers to communication between vehicles and people (including pedestrians, cyclists, drivers, or passengers); V2I refers to communication between vehicles and roadside infrastructure, such as vehicle-to-roadside unit or road side unit (RSU) communication, and V2N, which can be included in V2I, refers to communication between vehicles and base stations / networks. Among them, the RSU includes two types: a terminal type of RSU, which is in a non-mobile state due to being placed on the roadside and does not need to consider mobility; and a base station type of RSU, which can provide timing synchronization and resource scheduling for vehicles in communication with it.

[0048] Information transmitted based on a sidelink is also referred to as sidelink information. In embodiments of the present application, unless otherwise specified, information transmitted or received for communication between terminal devices is sidelink information. Sidelink information includes a sidelink channel or a sidelink signal. The sidelink channel can be a physical sidelink control channel (PSCCH), a physical sidelink shared channel (PSSCH), a physical sidelink discovery channel (PSDCH), a physical sidelink feedback channel (PSFCH), or a physical sidelink broadcast channel (PSBCH).

[0049] The PSSCH can be used to carry one or more of control information, service data (may also be referred to as a medium access control (MAC) protocol data unit (PDU)), or sidelink channel state information (CSI), etc. The service carried by the PSSCH can include unicast service, groupcast service, or broadcast service.

[0050] The PSFCH can be used to carry sidelink feedback information, which can include feedback information for data information, for example, hybrid automatic repeat request (HARQ) acknowledgement information, such as an acknowledge (ACK) or a negative acknowledge (NACK). The feedback information can also include one or more of the following: CSI feedback information, power saving information, or resource assistance information. The resource assistance information can be used to indicate recommended resources, non-recommended resources, resource collision, resource reservation conflict, past or future half duplex conflict, etc. The PSBCH can be used to carry sidelink synchronization related information. The sidelink signal can be a demodulation reference signal (DMRS), a channel state information reference signal (CSI-RS), a phase-tracking reference signal (PT-RS), a positioning reference signal (P-RS), and a synchronization signal (SS) including a primary synchronization reference signal and a secondary synchronization reference signal.

[0051] The PSCCH can be used to carry SCI. In the embodiments of the present application, the SCI includes LTE SCI and NR SCI. That is, the SCI can be a first-order SCI, or a first-order SCI and a second SCI. The first-order SCI can be denoted as SCI-1, also referred to as a first-level SCI, and the second-order SCI can be denoted as SCI-2, also referred to as a second-level SCI. It can be understood that the first-order SCI is carried on the PSCCH, and the second-order SCI is carried on the PSSCH. The SCI in LTE corresponds to the first-order SCI in NR.

[0052] The embodiments of the present application mainly relate to LTE sidelink information (i.e., information transmitted by an NR-V2X communication module) and NR sidelink information (i.e., information transmitted by an LTE-V2X communication module). The LTE sidelink information also refers to information transmitted through an LTE sidelink, which can be referred to as LTE information. The NR sidelink information also refers to information transmitted through an NR sidelink, which can be referred to as NR information. The NR information includes at least one of NR sidelink control information, NR sidelink data information, NR sidelink feedback information, NR collision indication information, NR sidelink broadcast information, NR DMRS, NR PTRS, NR CSI-RS, and NR synchronization signal. The LTE information includes at least one of LTE sidelink control information, LTE sidelink data information, NR sidelink discovery information, NR sidelink broadcast information, NR DM-RS, and NR synchronization signal.

[0053] The embodiments of the present application relate to two types of sidelink information, one type is based on NR wireless access information, and the other type is based on E-UTRA wireless access information. The NR wireless access refers to using the NR technology specified by 3GPP for wireless communication, including using the channel and / or signal defined by NR; the E-UTRA wireless access refers to using the E-UTRA technology (i.e., LTE technology) specified by 3GPP for wireless communication, including using the channel and / or signal defined by LTE. The information based on NR wireless access is also referred to as NR sidelink information or NR information. The information based on E-UTRA wireless access is also referred to as LTE sidelink information or LTE information. For convenience of description, in the embodiments of the present application, the information based on NR wireless access is referred to as first information, and the information based on E-UTRA wireless access is referred to as second information (hereinafter taken as an example).

[0054] The sidelink can communicate through a licensed spectrum, or through an unlicensed spectrum, or through both the licensed spectrum and the unlicensed spectrum. The sidelink related protocol technology of the unlicensed spectrum can be collectively referred to as sidelink-unlicensed (SL-U). There are mainly two modes for resource allocation of the sidelink, one is network device allocation resource mode (mode-1), and the other is terminal device self-selected resource mode (mode-2). Mode-1 is mainly applied to V2X communication under network coverage, and the base station allocates resources for each terminal device. In mode-2, the transmission resource of the terminal device is not dependent on the network device, and this mode is not limited by network coverage. Whether there is network coverage or not, the terminal device can communicate in this mode. The embodiments of the present application mainly refer to mode-2, therefore, mode-2 is mainly introduced hereinafter, and mode-1 is not introduced in detail.

[0055] Mode-2 means that the network device can allocate one or more resource pools in advance, and the terminal device can select available resources in the one or more resource pools. The resource pool is a set of time-frequency resources used by the terminal device for sidelink communication. The resource pool includes one or more frequency domain units in the frequency domain, which can be a resource element (RE), a resource block (RB), or a subchannel, a carrier, a bandwidth part (BWP), etc. For convenience of description, the frequency domain unit is taken as an example in the embodiments of the present application, unless otherwise specified. The resource pool includes one or more time units in the time domain. The time unit can be a symbol, a slot, a mini-slot, a subframe, a frame, a half subframe, or a half frame, etc. The one or more time units can be continuous in time or discrete.

[0056] In the case of network device coverage, the network device can configure the resource pool through a system information block (SIB), cell-specific radio resource control (RRC) signaling, or UE-specific RRC signaling. For example, the network device can send resource configuration information for sidelink through a SIB or cell-specific RRC signaling or UE-specific RRC signaling, which can be used to indicate a resource pool for sidelink communication and / or sidelink bandwidth part (BWP) configuration. In the case of no network coverage, the resource pool can be preconfigured. The resource configuration information can also include configuration information of the PSCCH. The configuration information of the PSCCH can include the number of symbols occupied by the PSCCH in a slot and the number of resource blocks (RBs) occupied by the PSCCH in a subchannel. The sidelink BWP configuration information can include one or more of the following information: resource pool information, bandwidth information, symbol information, subcarrier spacing information, or cyclic prefix information. The resource pool information can be used to configure the number of resource pools included in the BWP. The bandwidth information can be used to indicate the bandwidth size for sidelink communication, for example, 20 megahertz (MHz), i.e., the bandwidth for sidelink is 20 MHz. The symbol information can be used to indicate the starting symbol position and the number of consecutive symbols occupied on a slot. The subcarrier spacing information can be used to indicate the subcarrier spacing used for sidelink communication. The cyclic prefix information can be used to indicate the cyclic prefix used for sidelink communication. In one possible configuration, the sidelink BWP configuration information can also include sidelink resource pool configuration information.

[0057] The time domain resources included in the resource pool can be continuous or discontinuous. Similarly, the frequency domain resources included in the resource pool can be continuous or discontinuous. In LTE, the minimum granularity of time domain resources can be a slot or a subframe (as an example herein), that is, the unit of time domain resources is a slot or a subframe. The network device can pre-configure the resource pool. For example, in LTE, the network device can indicate the subframes belonging to the resource pool in every 1024 radio frames under different time division duplex (TDD) or frequency division duplex (FDD) configurations by using the information element "SubframeBitmapSL-r14" with a period of 10 to 100 subframes. In NR, the network device can indicate the slots belonging to the resource pool in every 1024 radio frames by using the information element "sl-TimeResource-r16" with a period of 10 to 160 slots.

[0058] It should be noted that the continuity of the time units included in the resource pool in the time domain can refer to physical continuity or logical continuity. For example, refer to Figure 2 , which is a schematic diagram of physically continuous slots and logically continuous slots. Figure 2 Take physically continuous slots 1 to 8 as an example. The slots 1 to 8 can also be referred to as physical slots. The slots 1, 3, 5, and 8 in the slots 1 to 8 are configured to belong to one resource pool. That is, the resource pool includes the physically continuous slots 1, 3, 5, and 8. From the perspective of the resource pool, the resource pool includes 4 slots, which can be slots 1', 2', 3', and 4', that is, the resource pool includes logically continuous 4 slots. From Figure 1 It can be seen from the above that the slot 1 on the physical slot is the slot 1' in the resource pool, the slot 3 on the physical slot is the slot 2' in the resource pool, the slot 5 on the physical slot is the slot 3' in the resource pool, and the slot 8 on the physical slot is the slot 4' in the resource pool. That is, the physically discontinuous slots can be continuous in logic. For convenience of description, in the embodiments of the present application, the slots that are logically continuous but not necessarily continuous in physics can be referred to as logical slots. In contrast, the slots in physics are referred to as physical slots. Similarly, the subframes that are logically continuous but not necessarily continuous in physics can be referred to as logical subframes. In contrast, the subframes in physics are referred to as physical subframes. For example, the resource pool for transmitting NR information includes T NR logical slots, and the slots for transmitting NR information can include a logical slot m, and the value of m ranges from 0 to T NR-1}. For example, the resource pool for transmitting LTE information includes a total of T logical subframes LTE The subframe for transmitting LTE information can include logical subframe k, and k is in the range of {0, 1, …, T LTE -1}.

[0059] According to the use of the resource pool, the resource pool can be divided into a sending resource pool and a receiving resource pool. The terminal device sends in the sending resource pool and receives in the receiving resource pool. Generally, in order to ensure the sidelink communication of two terminal devices, the sending resource pool in which the sending terminal device is located and the receiving resource pool in which the receiving terminal device is located are corresponding, that is, the time-frequency domain resources of the sending resource pool and the receiving resource pool and the communication parameters configured in the resource pool are the same. It can also be considered that one sending resource pool, by default, there is a corresponding receiving resource pool, so as to ensure that the sending terminal device can communicate with the receiving terminal device. Of course, the receiving resource pool can also include the resources of the sending resource pool, and the sending resource pool can also include the resources of the receiving resource pool. The terminal device in the resource pool in the embodiment of the present application sends, which means that the terminal device sends through the resources in the sending resource pool; the terminal device receives in the resource pool, which means that the terminal device receives in the receiving resource pool corresponding to the sending resource pool.

[0060] In NR, the network device can configure the receiving resource pool and the sending resource pool through SL-BWP-PoolConfigCommon or SL-BWP-PoolConfig. Different resource pools can have different parameter configurations, such as logical slots. Different resource pools can be distinguished by resource pool indexes (for example, SL-ResourcePoolID), that is, the SL-ResourcePoolIDs of different resource pools are different. If two resource pools have the same SL-ResourcePoolID, it can be considered that the time-frequency resources of the two resource pools are completely overlapped.

[0061] Before transmitting sidelink information, each terminal device needs to determine the resource for transmitting the sidelink information. “Transmitting” in the embodiment of the present application includes sending and / or receiving. The following takes terminal device 1 as an example to introduce the resource selection process.

[0062] The terminal device 1 can sense the SCI transmitted by other terminal devices in the resource pool in a sensing window (also referred to as a listening window). The sensing includes the process of detecting (listening or sensing) the SCI, or can include the process of detecting the SCI, decoding the SCI, and measuring the RSRP of the RS of the resource according to the indication of the SCI. The terminal device 1 selects the resource by itself in the resource selection window (RSW) according to the sensing result. Assuming that the physical (PHY) layer of the terminal device 1 knows that there is information to be transmitted through the MAC layer, the terminal device 1 determines to trigger resource selection at a time unit n, and the sensing window can be defined as T time slots before the resource selection trigger, and the resource selection window can be [n+T1, n+T2], T, T1 and T2 are all greater than 0, as shown in the following table. Figure 3 Figure 3 The sensing window and the resource selection window are shown.

[0063] wherein, is the time delay of the terminal device 1 processing the resource selection and data transmission. For terminal devices of different capabilities, the value of will also be different. The value of is also related to the subcarrier spacing μ SL used for transmitting sidelink information, as shown in Table 1. T 2min ≤ T2 ≤ PDB. T 2min may be predefined, or can also be configured by the network device or other terminal devices through RRC signaling. PDB is the packet delay budget (packet delay budget) used to reflect the transmission time delay requirement of the data to be transmitted, and the unit can be millisecond (ms) or time slot. Taking the case that the terminal device 1 needs to transmit first data to the terminal device 2 as an example, the terminal device 1 needs to ensure that the data is transmitted within the remaining PDB, otherwise it will be considered as a transmission failure.

[0064] Table 1

[0065]

[0066]

[0067] The sensing window can be includes the time delay of the terminal device 1 processing the sensing result. For terminal devices of different capabilities, the value of will also be different. The value of is also related to the subcarrier spacing μ SL used for transmitting sidelink information, as shown in Table 2.

[0068] ​Table 2

[0069]

[0070] If the SCI perceived by the terminal device 1 includes a resource reserved by other terminal devices, and the reserved resource is located in the resource selection window [n+T1, n+T2], the terminal device 1 measures the corresponding resource of the reserved resource in the resource selection window, and the RSRP of the resource can be obtained through the measurement. If the measured RSRP is greater than the RSRP threshold, it can be considered that the resource has been occupied, and the terminal device 1 excludes the resource from the resource selection window. If the measured RSRP is less than the RSRP threshold, it can be considered that the resource is currently not occupied, and the terminal device 1 can select the resource as a candidate resource for transmitting sidelink information from the resource selection window. The RSRP threshold is related to the priority (prio TX ) of the information to be transmitted and the priority (prio RX ) indicated by the received SCI. For example, the RSRP threshold can be the RSRP threshold corresponding to the (prio RX +(prio TX -1)*8)th index in the set of RSRP threshold values configured for the resource pool.

[0071] It can be understood that the initial available resource set S A is a set of all time-frequency resources in the resource selection window, for example, S A is a set of all time-frequency resource units in the resource selection window. A time-frequency unit is a unit composed of one time slot and one subchannel. The terminal device 1 excludes the unavailable resources, such as the occupied or reserved resources, from the resource set S A according to the measurement results of the resources. For example, the excluded resources from the resource set S A satisfy the following condition A or condition B, in other words, if a resource satisfies any of the following conditions A and B, it is excluded from the resource set S A .

[0072] Condition A: the resource is not perceived in the perception window. For example, the terminal device 1 is a terminal device working in half-duplex communication. If the terminal device 1 is in a transmitting state, it cannot receive at this time. When the terminal device 1 transmits data on the selected resource (for example, referred to as a transmitting time slot), the terminal device 1 has no ability to listen to the transmitting time slot, and therefore does not know whether other terminal devices have reserved the resources in the transmitting time slot. In this case, in order to avoid conflicts, the transmitting time slot can be excluded from the resource set S A .

[0073] Condition B, the perceived resource has been reserved. For example, terminal device 1 perceives SCI transmitted by other terminal device on a time slot, and the SCI indicates a periodic resource reservation, and the periodic resource reservation includes all sub-channels on the time slot within the resource selection window. Then, all sub-channels on the time slot within the resource selection window are excluded from the resource set S A .

[0074] After excluding some resources from the resource set S A according to Condition A and Condition B, if the proportion of the remaining resources in the resource selection window is less than a certain threshold, for example, X%, then the unavailable resources are excluded from the resource set S A . A . That is, the unavailable resources are not excluded from the resource set S A according to Condition A and Condition B. For example, the unavailable resources are excluded from the resource set S A according to Condition C-Condition E. For example, the resources that satisfy Condition C-Condition E at the same time are excluded from the resource set S

[0075] Condition C, the first-order SCI received is successfully decoded.

[0076] Condition D, the first-order SCI received indicates that the energy measurement of the reserved resource is greater than a certain threshold. For example, the first-order SCI indicates that the reserved resource is used for transmitting PSSCH, including the resource of PSSCH de-modulation reference signal (DMRS). Condition D can be that the RSRP of the resource is higher than the RSRP threshold value. It can be understood that the PSSCH time-frequency resource also includes the periodically reserved time-frequency resource, the time resource indicator value (TRVI) and the frequency resource indicator value (FRVI) reserved time-frequency resource. The RSRP threshold value is replaceable with the RSRP threshold, and the RSRP threshold is related to the priority, that is, the RSRP threshold can be determined according to the priority.

[0077] Condition E, the first-order SCI received indicates that the reserved resource is located within the resource selection window. The first-order SCI indicating the reserved resource can include the periodically reserved resource, the TRVI and the FRVI indicating the reserved resource.

[0078] For example, terminal device 1 receives the first-order SCI on a time slot and successfully decodes it. If the first-order SCI indicates that the reserved resource is located within the resource selection window, and the first-order SCI indicates that the energy measurement of the reserved resource is greater than a certain threshold, then terminal device 1 excludes all sub-channels on the time slot within the resource selection window from the resource set SA The first order SCI indicates the reserved resources are excluded.

[0079] According to conditions C-condition E, the available resources are excluded from the resource set S A After the available resources are excluded, the proportion of the remaining resources in the resource selection window is less than X%, the RSRP threshold can be raised. For example, 3 decibels (dB) are raised each time, and the available resources are excluded from the resource set S A According to conditions C-condition E, until the proportion of the remaining resources in the resource selection window is not less than X%. After the terminal device 1 performs resource selection, the selected resources can be notified to other terminal devices through SCI to minimize the conflict with other terminal devices.

[0080] The NR-V2X standardized by 3GPP Release 16 (R16) supports in-device coexistence. That is, the terminal device in 3GPP Release 16 supports coexistence of an LTE-V2X communication module and an NR-V2X communication module. That is, the terminal device of 3GPP R16 can simultaneously set the LTE-V2X communication module and the NR-V2X communication module. In other words, the terminal device of 3GPP R16 can communicate with both traditional LTE-V2X terminal devices and NR-V2X terminal devices. Alternatively, the terminal device of 3GPP R16 can also coexist with the NR-V2X terminal device of the future new version. It should be noted that the embodiments of the present application do not limit the specific implementation form of the LTE-V2X communication module and the NR-V2X communication module. For example, the LTE-V2X communication module and the NR-V2X communication module included in a terminal device can be two independent communication modules, or can be one communication module integrating LTE-V2X communication function and NR-V2X communication function.

[0081] According to the type of the terminal device 1, X can also be different. For example, the terminal device 1 is an LTE-V2X terminal device, and X is 20%. When the terminal device 1 is an NR-V2X terminal device, X is configured by the resource pool. For the LTE-V2X terminal device, if the available resources are excluded from the resource set S A After the available resources are excluded, the proportion of the remaining resources in the resource selection window is greater than 20%, the remaining resources can be sorted, and the 20% of the resources with the smallest RSSI are selected to form the resource set S B The resource set S B is taken as the candidate resource set.

[0082] For the convenience of description, the terminal device provided with the LTE-V2X communication module but without the NR-V2X communication module is referred to as an LTE-V2X terminal device, and the terminal device provided with the NR-V2X communication module is referred to as an NR-V2X terminal device. In other words, the LTE-V2X terminal device includes the LTE-V2X communication module but does not include the NR-V2X communication module; the NR-V2X terminal device includes the terminal device including the NR-V2X communication module, or the NR-V2X terminal device includes the NR-V2X communication module and the LTE-V2X communication module. That is, the NR-V2X terminal device can include the LTE-V2X communication module in addition to the NR-V2X communication module. The LTE-V2X communication module and the NR-V2X communication module coexist, which is equivalent to the LTE sidelink information and the NR sidelink information can coexist, that is, "co-channel coexistence for LTE sidelink and NR sidelink". From this perspective, the NR terminal device can refer to the terminal device that transmits information based on the NR-V2X or the NR sidelink. The LTE terminal device can refer to the terminal device that transmits information based on the LTE-V2X or the LTE sidelink.

[0083] Taking the terminal device of 3GPP R16 transmitting information as an example, the LTE-V2X communication module and the NR-V2X communication module in the terminal device of 3GPP R16 transmit information in a time division multiplexing or frequency division multiplexing manner. The NR-V2X terminal device can transmit NR sidelink information and / or TLE sidelink information, and the LTE-V2X terminal device can transmit TLE sidelink information. For example, the LTE-V2X communication module in the NR-V2X terminal device can interact with the LTE-V2X terminal device to transmit NR sidelink information, and the NR-V2X communication module in the NR-V2X terminal device can interact with the terminal device provided with the NR-V2X communication module to transmit TLE sidelink information. In addition, the PHY layer of the LTE-V2X communication module in the NR-V2X terminal device and the PHY layer of the NR-V2X communication module in the NR-V2X terminal device can interact information (for example, some parameters related to the resources occupied or reserved by the LTE-V2X communication module), so that the NR-V2X communication module selects resources according to the parameters.

[0084] For example, please refer to Figure 4Fig. 2 is a schematic diagram of NR-V2X terminal device communication. The LTE-V2X communication module in the NR-V2X terminal device can communicate with the LTE-V2X terminal device, and the NR-V2X communication module in the NR-V2X terminal device can communicate with the terminal device provided with the NR-V2X communication module. For one NR-V2X terminal device, the PHY layer of the LTE-V2X communication module in the NR-V2X terminal device and the PHY layer of the NR-V2X communication module in the NR-V2X terminal device can interact information. For example, the PHY layer of the LTE-V2X communication module sends the PHY layer of the NR-V2X communication module the measurement result of the received signal strength indicator (RSSI) measurement of the resource in the resource pool. The PHY layer of the NR-V2X communication module receives the resource detection triggered by the MAC layer of the NR-V2X communication module, the PHY layer of the NR-V2X communication module excludes the resource according to the parameters received from the PHY layer of the LTE-V2X communication module, determines a resource set, and feeds back the resource set to the MAC layer of the NR-V2X communication module. The MAC layer of the NR-V2X communication module determines the resource to be used by the transmission information according to the received resource set.

[0085] Generally, the network device configures a resource pool based on LTE-V2X communication (also referred to as LTE-V2X resource pool) and a resource pool based on NR-V2X communication (also referred to as NR-V2X resource pool). The LTE-V2X terminal device selects the resource from the LTE-V2X resource pool for LTE-V2X communication, and the NR-V2X terminal device selects the resource from the NR-V2X resource pool for NR-V2X communication. Optionally, the NR-V2X terminal device can also select the resource from the LTE-V2X resource pool for LTE-V2X communication. Since the LTE-V2X communication module and the NR-V2X communication module cannot directly communicate with each other, in order to reduce or avoid the interference between the LTE-V2X communication module and the NR-V2X communication module, the LTE-V2X resource pool and the NR-V2X resource pool are generally orthogonal. Optionally, the network device can configure independent resource pools for the LTE-V2X communication module and the NR-V2X communication module.

[0086] To improve resource utilization, the network device can configure a common resource pool for the LTE-V2X communication module and the NR-V2X communication module. It can be understood that the common resource pool belongs to both the LTE-V2X resource pool and the NR-V2X resource pool. For example, a common resource pool (referred to as a common resource pool) can be configured for the LTE-V2X communication module and the NR-V2X communication module, and the LTE-V2X terminal device and the NR-V2X terminal device can both select resources in the common resource pool for communication. When the LTE-V2X terminal device and the NR-V2X terminal device share the common resource pool, each of them selects resources in the common resource pool according to the aforementioned condition A-condition B or condition C-condition E. If the proportion of the remaining resources in the resource selection window is less than X% after exclusion, the LTE-V2X terminal device raises the RSRP threshold to make the candidate resources more.

[0087] When the LTE-V2X terminal device and the NR-V2X terminal device share the common resource pool, for the LTE-V2X terminal device, raising the RSRP threshold of the common resource pool, although the candidate resources are more, but the candidate resources can include the resources reserved by the NR-V2X terminal device. If the NR-V2X terminal device selects in the resources reserved by the NR-V2X terminal device, the actual available resources of the LTE-V2X terminal device will be less, thereby affecting the transmission performance of other LTE-V2X terminal devices. Similarly, for the NR-V2X terminal device, if the RSRP threshold of the common resource pool is raised, the transmission performance of other NR-V2X terminal devices can also be affected.

[0088] In view of this, the embodiments of the present application provide a communication method, which explicitly raises the rule of the RSRP threshold for excluding resources to reduce the impact on the transmission performance of the LTE-V2X terminal device and / or the NR-V2X terminal device.

[0089] In the embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the front and rear associated objects. "At least one of the following" or similar expressions means any combination of the ten or more items, including any combination of single or multiple items. For example, at least one of a, b, or c can represent a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.

[0090] And, unless otherwise stated, the ordinal numbers "first", "second", etc. mentioned in the embodiments of the present application are used to distinguish different objects, and are not used to limit the order, time sequence, priority or importance of the different objects. For example, the first information and the second information are only used to distinguish different information, and do not mean that the priority or importance of the two kinds of information is different. In the embodiments of the present application, "if" and "if" can be replaced, and "when" and "in the case of" can be replaced without special instructions.

[0091] In the embodiments of the present application, the first terminal device is an NR terminal device or an NR communication module, and the second terminal device is an LTE terminal device or an LTE communication module. The first terminal device and the second terminal device can share all or part of the configured resources. For example, the network device configures the same resource pool for the first terminal device and the second terminal device, and the first terminal device can use part or all of the resources in the resource pool to send the first information, and the second terminal device can also use part or all of the resources in the resource pool to send the second information. For another example, the network device configures a first resource pool for the first terminal device, and part or all of the resources in the first resource pool can be shared by the second terminal device. That is, the first terminal device and the second terminal device can share part or all of the resources in the first resource pool.

[0092] The first terminal device can increase the RSRP threshold corresponding to the resource when performing resource selection or resource exclusion process, for example, when the proportion of the resources in the candidate resource set in the first resource pool is less than the first threshold, the RSRP threshold corresponding to the resource is increased. The first threshold can be 20% or other possible values. If the first terminal device increases the RSRP threshold corresponding to any resource in the first resource pool during the resource exclusion process, it may affect the transmission performance of the NR communication module and the LTE communication module. The embodiments of the present application provide multiple rules for increasing the RSRP threshold for excluding resources to reduce the impact on the transmission performance of the LTE-V2X terminal device and / or the NR-V2X terminal device. The following will introduce several rules for increasing the RSRP threshold for excluding resources. It can be understood that whether to exclude the resource is determined according to the RSRP threshold corresponding to the resource, or in other words, whether the resource is available is determined according to the RSRP threshold corresponding to the resource, or in other words, whether the resource can belong to the candidate resource set is determined according to the RSRP threshold corresponding to the resource, if the resource can belong to the candidate resource set, the resource can be selected to send the first information. For example, whether to exclude the first resource is determined according to the RSRP threshold corresponding to the first resource, that is, whether the first resource is available is determined according to the RSRP threshold corresponding to the first resource. It can also be considered that whether to add the first resource to the candidate resource set is determined according to the RSRP threshold corresponding to the first resource, if the first resource can be a resource in the candidate resource set, the first resource can be selected to send the first information. Thus, the available resources for sending the first information are determined, for example, the available resources for the third terminal device to send the first information.

[0093] Rule one, when the proportion of the resources in the candidate resource set in the first resource pool is less than the first threshold, and the occupancy rate of the first resource set in the first resource pool is greater than or equal to the second threshold, the RSRP threshold corresponding to the first resource is increased. The determination method of the occupancy rate of the first resource set in the first resource pool will be introduced below.

[0094] The first resource set refers to a set of resources used for transmitting the second information. For example, the first resource set is a set of resources occupied or reserved by the at least one second terminal device for transmitting the second information. The first resource is a resource used for transmitting the first information, for example, the first resource is a resource occupied and / or reserved by the first information. It can also be considered that the first resource is a resource indicated by the SCI to be transmitted by the first terminal device, or the first resource is a resource indicated by the SCI transmitted by the first terminal device. For example, the first resource includes a single or multiple reserved resources indicated by a time-frequency resource indication field in the SCI transmitted by the first terminal device. For another example, the SCI transmitted by the first terminal device indicates the resource position in a resource reservation period, that is, indirectly indicates the periodically reserved resources. The first resource includes the periodically reserved resources. The terminal device that needs to select or exclude resources can determine the position of the resources reserved by other terminal devices according to the resource position indicated by the received SCI and the period information.

[0095] Before the first terminal device needs to transmit the first information, the first terminal device can determine the resources to be occupied by the first information or reserve resources for the first information. When the proportion of the first resource set in the first resource pool is large, that is, there are more resources occupied and / or reserved by the second information in the first resource pool, it can be considered that the demand of the second terminal device for resources is high, that is, more resources are needed. In this case, the RSRP threshold of the resources occupied and / or reserved by the first information can be improved, so as to exclude more resources reserved by the NR communication module, so that more resources are available for the LTE communication module, and the influence on the transmission performance of the LTE communication module is reduced. In addition, because the RSRP threshold of the resources occupied and / or reserved by the first information is improved, more resources reserved by the NR communication module are excluded, so that the resources available for the NR communication device are reduced, thereby the probability of resource conflict between the LTE communication module and the NR communication module can be reduced.

[0096] It should be noted that in rule one, the occupation ratio of the first resource set in the first resource pool is greater than or equal to the second threshold, which can be replaced by the occupation ratio of the third resource set in the first resource pool being less than or equal to the third threshold. The third resource set includes resources used for sending the first information, or the third resource set is the resource occupied and / or reserved by the first information. Alternatively, the occupation ratio of the first resource set in the first resource pool is greater than or equal to the second threshold, which can be replaced by the occupation ratio of the first resource set and the third resource set in the first resource pool being less than or equal to the fourth threshold. That is, the occupation ratio of the first resource set in the first resource pool can be determined according to the proportion of the first resource set and the third resource set in the first resource pool. Alternatively, the occupation ratio of the first resource set in the first resource pool is greater than or equal to the second threshold, which can be replaced by the occupation ratio of the first resource set in the first resource pool being less than or equal to the fifth threshold. That is, when the occupation ratio of the resource occupied and / or reserved by the second information in the first resource pool is less than or equal to a certain threshold, when the proportion of the resource in the candidate resource set in the first resource pool is lower than the first threshold, the RSRP threshold of the first resource is improved.

[0097] Rule two, when the proportion of the resource in the candidate resource set in the first resource pool is less than the first threshold, and the occupation ratio of the first resource set in the first resource pool is greater than or equal to the second threshold, the RSRP threshold corresponding to the second resource is improved.

[0098] The difference between rule two and rule one is that the RSRP threshold corresponding to the second resource is improved. The second resource is a resource used for sending the second information, for example, the second resource is a resource occupied and / or reserved by the second information. It can also be considered that the second resource is a resource indicated by the SCI to be sent by the second terminal device, or the second resource is a resource indicated by the SCI sent by the second terminal device. The second resource includes a time-frequency resource indication field in the SCI sent by the second terminal device indicating a single or multiple reserved resources. The SCI sent by the second terminal device indicates the resource position in a resource reservation period, that is, indirectly indicates the periodically reserved resource. The second resource includes the periodically reserved resource. The terminal device that needs to select resources or needs to exclude resources can determine the reserved resource according to the resource position and period information indicated by the received SCI.

[0099] Before the first terminal device needs to send the first information, the first terminal device can determine the resources to be occupied by the first information, or can reserve resources for the first information. When the proportion of the first resource set in the first resource pool is large, that is, the second information occupies and / or reserves more resources in the first resource pool, it can be considered that the demand of the second terminal device for resources is high, that is, more resources are needed. On the contrary, the first terminal device needs less resources. In this case, considering that the first terminal device may send critical information, such as driving safety information, in order to ensure the transmission reliability of the first terminal device, the RSRP threshold of the resources occupied and / or reserved by the second information can be improved, thereby excluding more resources reserved by the LTE communication module, so that more resources are available for the NR communication module, thereby ensuring the transmission reliability of the NR communication module as much as possible.

[0100] It should be noted that in rule two, the occupation rate of the first resource set in the first resource pool is greater than or equal to the second threshold, which can be replaced by the occupation rate of the third resource set in the first resource pool being less than or equal to the third threshold. The third resource set includes resources for sending the first information, or the third resource set is the resources occupied and / or reserved by the first information. Alternatively, the occupation rate of the first resource set in the first resource pool is greater than or equal to the second threshold, which can be replaced by the occupation rate of the first resource set and the third resource set in the first resource pool being less than or equal to the fourth threshold. That is, the occupation rate of the first resource set in the first resource pool can be determined according to the proportion of the first resource set and the third resource set in the first resource pool. Alternatively, the occupation rate of the first resource set in the first resource pool is greater than or equal to the second threshold, which can be replaced by the occupation rate of the first resource set in the first resource pool being less than or equal to the fifth threshold. That is, when the occupation rate of the resources occupied and / or reserved by the second information in the first resource pool is less than or equal to a certain threshold, the RSRP threshold of the second resource is improved when the proportion of the resources in the candidate resource set in the first resource pool is lower than the first threshold.

[0101] Rule three, when the proportion of the resources in the candidate resource set in the first resource pool is less than the first threshold, the RSRP threshold corresponding to the first resource is improved by default.

[0102] The difference between rule three and rule one is that when the first terminal device needs to exclude resources, the RSRP threshold corresponding to the first resource is improved by default. It is not necessary to consider the proportion of the first resource set in the first resource pool. Rule three can avoid affecting the transmission performance of the LTE communication device as much as possible.

[0103] Rule four, when the proportion of the resources in the candidate resource set in the first resource pool is less than the first threshold, the RSRP threshold corresponding to the second resource is improved by default.

[0104] Rule four is different from rule one in that when the first terminal device needs to perform resource exclusion, the RSRP threshold corresponding to the second resource is raised by default. There is no need to consider the proportion of the first resource set in the first resource pool. Rule four can provide more resources for the first information, thereby being applicable to scenarios where more NR communication modules exist.

[0105] The following describes a determination manner of the occupancy rate of the first resource set in the first resource pool.

[0106] Determination manner one uses CBR to represent the occupancy rate, and the occupancy rate of the first resource set in the first resource pool is the proportion of resources with RSSI greater than the first RSSI threshold in the first resource pool. The resources with RSSI greater than the first RSSI threshold are resources used by the second terminal device to send the second information.

[0107] For example, of the L resources included in the first resource pool, M resources are used by the second terminal device to send the second information, and of the M resources, N resources have RSSI greater than the first RSSI threshold. The CBR of the first resource set in the first resource pool is N / L.

[0108] Determination manner two is that the occupancy rate of the first resource set in the first resource pool is the ratio of the number of resources used by the second terminal device to send the second information in the first window to the total number of resources in the first resource pool included in the first window. The length of the first window is configured, or preconfigured, or predefined.

[0109] The first window can be used to determine the occupancy rate of the first resource set in the first resource pool. The first terminal device can determine the occupancy rate of the first resource set in the first resource pool based on the resources occupied by the second information set in the first window. The occupancy rate of the first resource set in the first resource pool is the ratio of the number of resources occupied and / or reserved by the second information set in the first window to the total number of resources in the first resource pool included in the first window. The second information set is a set of second information sent by at least one second terminal device, or the second information set is a set of second information sent by all terminal devices in the first resource pool in the first window.

[0110] The first window can be configured, or preconfigured, or predefined. For example, the start position of the first window can be slot n-a, and the end position of the first window can be slot n-b, that is, the first window can be all slots contained in [n-a, n-b]. Embodiments of the present application do not limit the values of a and b. a and b can be integers, for example, a and b can be positive numbers, and the value of a can also be 0. a and b can be equal, or b can be less than a. For example, b=1, and the value of a is related to the subcarrier spacing used by the first terminal device. For example, the larger the subcarrier spacing used for sidelink communication, the larger the value of a, a=X or X·2μ wherein X can be 50, 100, 200, 300, 400, 500 or 1000, and μ can be 0, 1, 2, 3 and 4, respectively, when the subcarrier spacing is 15 kHz, 30 kHz, 60 kHz, 120 kHz and 240 kHz, respectively. The size of the first window can be expressed in absolute time, e.g., seconds or milliseconds, or in time slots. The time slots can be physical time slots or logical time slots of the first resource pool, which is not limited in the embodiments of the present application. Optionally, the first window can or can not contain the boundaries n-a and / or n-b.

[0111] It can be understood that the first terminal device can receive at least one second information or at least one first information in the first window. The first terminal device can decode all the sidelink information received in the first window. Since the first information and the second information are based on different radio accesses, the formats of the first information and the second information and the contents included are different, so the first terminal device can distinguish whether the received sidelink information is the first information or the second information. For example, the first terminal device decodes the received sidelink information and determines the sidelink information. For example, the first terminal device can obtain the PSCCH included in the sidelink information, and determine whether the PSCCH is based on the NR radio access or the E-UTRA radio access according to the information format of the PSCCH and the information content included, i.e., determine whether the sidelink information is the first information or the second information. In addition, the first terminal device can also obtain the time domain resource information and the frequency domain resource information of the PSSCH scheduled by the SCI carried by the PSCCH and the reference signal, e.g., DMRS, carried by the PSSCH according to the SCI. The frequency domain resource information of the PSSCH can include the number of frequency domain resources occupied by the PSSCH, and the DMRS occupies all the frequency domain resources occupied by the PSSCH. The time domain resource information of the PSSCH is used to indicate the time slot in which the PSSCH is transmitted. The first terminal device can determine the number of resources, e.g., M, used by the second terminal device to transmit the second information in the first window according to the time domain resource of the PSSCH and the frequency domain resource of the PSSCH. The resources used by the second terminal device to transmit the second information in the first window refer to the resources needed to be occupied and / or reserved by the second terminal device to transmit the second information in the first window, i.e., the resources needed to be occupied and / or reserved by the second information set in the second window. Assuming that the number of resources of the first resource pool in the first window is N, then the occupation rate of the first resource set in the first resource pool is M / N.

[0112] For convenience of understanding, please refer to Figure 5 A schematic diagram of the resources occupied by the second information set in the first window. In Figure 5In this context, the first terminal device measures the resources occupied by the second information set in time slot n, and the first window is [na, nb]( Figure 5 (Using dashed lines for illustration) as an example. Figure 5 As shown, the resource utilization rate is Figure 5 The ratio of the total number of resources occupied by the second information set within the dashed box to the total number of all resources included within the dashed box.

[0113] Optionally, the occupancy rate of the first resource set in the first resource pool is determined based on the resources in the first resource pool used for at least one second terminal device to transmit LTE sideline information and the resources used for at least one first terminal device to transmit NR sideline information. That is, the occupancy rate of the first resource set in the first resource pool is determined based on the resources occupied and / or reserved for LTE sideline information and the resources occupied and / or reserved for NR sideline information.

[0114] When the first terminal device and the second terminal device share resources, resource selection or exclusion can be performed according to one or more of the rules one to four mentioned above, which can reduce the impact on the transmission performance of the first terminal device or the second terminal device.

[0115] For example, see Figure 6 This is a flowchart illustrating the process of resource exclusion for the first terminal device.

[0116] S601, the first terminal device determines the occupancy rate of at least one resource (i.e., the first resource set) in the first resource pool.

[0117] The first terminal device can determine the occupancy rate of the first resource set in the first resource pool according to either determination method one or determination method two described above. For details, please refer to the relevant content of determination method one or determination method two mentioned above; they will not be repeated here.

[0118] S602. When the proportion of resources in the candidate resource set in the first resource pool is less than the first threshold, and the occupancy rate is greater than or equal to the second threshold, the RSRP threshold of the first resource or the second resource is increased.

[0119] The candidate resource set is a set of resources remaining after the first terminal device excludes resources from the first resource pool. When the proportion of resources in the candidate resource set in the first resource pool is less than the first threshold, it indicates that the resources in the candidate resource set can be insufficient for the first terminal device to use. In this case, the RSRP threshold of the resources can be raised to increase the resources that can be used. For example, the first terminal device can raise the RSRP threshold of the first resources according to rule one to reduce the impact on the transmission performance of the LTE communication module. For another example, the first terminal device can raise the RSRP threshold of the second resources according to rule two to improve the transmission reliability of the NR communication device. For another example, the first terminal device can raise the RSRP threshold of the first resources according to rule three to reduce the impact on the LTE communication module. For another example, the first terminal device raises the RSRP threshold of the second resources according to rule four, thereby leaving more available resources for the NR communication device, which is suitable for scenarios where there are more NR communication devices. For rules one to four, reference can be made to the foregoing related content, which will not be repeated here.

[0120] The first terminal device raises the RSRP threshold of the first resources or the second resources and performs the resource exclusion process again. When the proportion of resources in the candidate resource set in the first resource pool is still less than the first threshold and the proportion is still greater than or equal to the second threshold, the RSRP threshold of the first resources or the second resources is continuously raised until the proportion of resources in the candidate resource set in the first resource pool is greater than or equal to a certain threshold, such as the first threshold or another threshold.

[0121] It can be understood that the method and / or steps implemented by the first terminal device in each of the above embodiments can also be implemented by a component (such as a chip or circuit) available to the first terminal device or a device containing the first terminal device. The method and / or steps implemented by the network device can also be implemented by a component (such as a chip or circuit) available to the network device or a device containing the network device. The method and / or steps implemented by the second terminal device can also be implemented by a component (such as a chip or circuit) available to the second terminal device or a device containing the second terminal device.

[0122] In the embodiments provided in the present application, the method provided in the embodiments of the present application is introduced from the perspective of the first terminal device. The first terminal device can include hardware structures and / or software modules, and the above functions can be implemented in the form of hardware structures, software modules, or hardware structures plus software modules. Whether a certain function in the above functions is executed in the form of hardware structure, software module, or hardware structure plus software module depends on the specific application of the technical solution and the design constraint conditions.

[0123] Figure 7A schematic block diagram of the communication apparatus 700 is provided for the embodiments of the present application. The communication apparatus 700 can include a processing module 710 and a transceiver module 720. Optionally, it can also include a storage unit, which can be used to store instructions (codes or programs) and / or data. The processing module 710 and the transceiver module 720 can be coupled with the storage unit, for example, the processing module 710 can read the instructions (codes or programs) and / or data in the storage unit to implement the corresponding methods. The above-mentioned various units can be independently arranged, or partially or entirely integrated.

[0124] In some possible implementation manners, the communication apparatus 700 can correspond to the behaviors and functions of the first terminal apparatus in the above-mentioned method embodiments, for example, implement the method performed by the first terminal apparatus in the above-mentioned Figure 6 embodiments. The communication apparatus 700 can be the first terminal apparatus, or a component (for example, a chip or a circuit) applied to the first terminal apparatus, or a chip or a chip set or a part of a chip in the first terminal apparatus for performing the functions of the related methods.

[0125] For example, the processing module 710 is configured to determine an occupation rate of at least one resource in a first resource pool, and when a proportion of resources in the candidate resource set in the first resource pool is less than a first threshold and the occupation rate is greater than or equal to a second threshold, the RSRP threshold corresponding to the first resource or the second resource in the first resource pool is raised. The first resource is a resource indicated by SCI transmitted by the communication apparatus 700, and the sidelink control information transmitted by the communication apparatus 700 is information using NR radio access. The second resource is a resource indicated by SCI transmitted by the second terminal apparatus, and the sidelink control information transmitted by the second terminal apparatus is information using E-UTRA radio access. The first resource pool is indicated by configuration information. The at least one resource includes a resource used by the second terminal apparatus to transmit information using E-UTRA radio access. The candidate resource set is a resource set obtained by excluding resources from the first resource pool. The RSRP threshold is used to determine available resources, for example, resources that can be used by the third terminal apparatus to determine resources for transmitting information using NR radio access. It can be understood that, before any terminal apparatus transmits sidelink information, resource exclusion can be performed in the configured resource pool according to the RSRP threshold, and the remaining resources after excluding the unavailable resources form the candidate resource set. The transceiver module 720 is configured to transmit NR sidelink information.

[0126] As an optional implementation manner, the occupation rate is a channel busy rate CBR, the CBR is a proportion of resources in the first resource pool with RSSI greater than a first RSSI threshold in the first resource pool, and the resources with RSSI greater than the first RSSI threshold are resources used by the second terminal apparatus to transmit information using E-UTRA radio access.

[0127] As an optional implementation, the occupation rate is a ratio of a number of resources in the first window used by the second terminal device to transmit information using the E-UTRA radio access to a total number of resources in the first resource pool included in the first window. The length of the first window is configured, or pre-configured, or pre-defined.

[0128] As an optional implementation, the occupation rate is further determined by resources in the first resource pool used by at least one second terminal device to transmit information using the E-UTRA radio access.

[0129] For another example, the processing module 710 is configured to raise an RSRP threshold corresponding to the first resource when a proportion of resources in the candidate resource set in the first resource pool is less than a first threshold. The first resource pool includes resources shared by the communication device 700 and the second terminal device. The candidate resource set is a resource set obtained by excluding resources from the first resource pool. The RSRP threshold is used to determine available resources for transmitting information using the NR radio access. The first resource is a resource indicated by SCI transmitted by the communication device 700, and the sidelink information transmitted by the communication device 700 is information using the NR radio access. The sidelink information transmitted by the second terminal device is information using the E-UTRA radio access. The transceiver 720 is configured to transmit the NR sidelink information.

[0130] For another example, the processing module 710 is configured to raise an RSRP threshold corresponding to the second resource when a proportion of resources in the candidate resource set in the first resource pool is less than a first threshold. The first resource pool includes resources shared by the communication device 700 and the second terminal device. The candidate resource set is a resource set obtained by excluding resources from the first resource pool. The RSRP threshold is used to determine available resources for transmitting information using the NR radio access. The second resource is a resource indicated by SCI transmitted by the second terminal device, and the sidelink information transmitted by the second terminal device is information using the E-UTRA radio access.

[0131] When the communication device 700 is a chip-type device or circuit, the transceiver can be an input / output circuit and / or a communication interface; and the processing module can be an integrated processor or microprocessor or integrated circuit.

[0132] Figure 8A schematic block diagram of a communication apparatus 800 is provided in the embodiments of the present application. The communication apparatus 800 can be a terminal device, and can implement the functions of the first terminal device in the methods provided in the embodiments of the present application. Alternatively, the communication apparatus 800 can also be a device capable of supporting the first terminal device to implement the corresponding functions in the methods provided in the embodiments of the present application. The communication apparatus 800 can be a chip system. In the embodiments of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices. For specific functions, refer to the descriptions in the method embodiments.

[0133] The communication apparatus 800 includes one or more processors 801, which are configured to implement or support the implementation of the functions of the first terminal device in the methods provided in the embodiments of the present application. For specific descriptions, refer to the detailed descriptions in the method embodiments, which are not repeated here. The processor 801 can also be referred to as a processing unit or a processing module, and can implement certain control functions. The processor 801 can be a general-purpose processor or a special-purpose processor. For example, it includes a baseband processor, a central processing unit, an application processor, a modem processor, a graphics processor, an image signal processor, a digital signal processor, a video coding and decoding processor, a controller, a memory, and / or a neural network processor, etc. The baseband processor can be configured to process communication protocols and communication data. The central processing unit can be configured to control the communication apparatus 800, execute software programs and / or process data. Different processors can be independent devices, or can be integrated into one or more processors, for example, integrated into one or more application-specific integrated circuits.

[0134] Optionally, the communication apparatus 800 includes one or more memories 802, which are configured to store instructions 804 that can be run on the processor 801, so that the communication apparatus 800 performs the methods described in the above method embodiments. The memory 802 is coupled with the processor 801. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information interaction between devices, units or modules. The processor 801 can operate in cooperation with the memory 802. At least one of the at least one memory can be included in the processor. It should be noted that the memory 802 is not necessary, so in Figure 8 is shown in dashed lines.

[0135] Optionally, the memory 802 can also store data. The processor and the memory can be separately arranged, or integrated together. In the embodiments of the present application, the memory 802 can be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), and can also be a volatile memory, such as a random-access memory (RAM). The memory can be any other medium capable of carrying or storing desired program codes in the form of instructions or data structures and capable of being accessed by a computer, but is not limited to this. The memory in the embodiments of the present application can also be a circuit or any other device capable of realizing a storage function, used for storing program instructions and / or data.

[0136] Optionally, the communication apparatus 800 can include instructions 803 (which can also be referred to as code or programs at times) that can be run on the processor, so that the communication apparatus 800 performs the methods described in the above embodiments. Data can be stored in the processor 801.

[0137] Optionally, the communication apparatus 800 can also include a transceiver 805 and an antenna 806. The transceiver 805 can be referred to as a transceiving unit, a transceiving module, a transceiver, a transceiving circuit, a transceiver, an input / output interface, etc., used to realize the transceiving function of the communication apparatus 800 through the antenna 806.

[0138] The processor 801 and the transceiver 805 described in the present application can be implemented on an integrated circuit (IC), an analog IC, a radio frequency identification (RFID), a mixed-signal IC, an ASIC, a printed circuit board (PCB), or an electronic device, etc. The communication apparatus described herein can be a standalone device (for example, a standalone integrated circuit, a mobile phone, etc.), or can be part of a larger device (for example, a module that can be embedded in other devices), and specific details can be referred to the foregoing description of terminal devices or terminal apparatuses, which will not be described here again.

[0139] Optionally, the communication apparatus 800 can 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 (USB) interface, a power management module, an antenna, a speaker, a microphone, an input / output module, a sensor module, a motor, a camera, or a display screen, etc. It can be understood that, in some embodiments, the communication apparatus 800 can include more or less components, or some components can be integrated, or some components can be split. These components can be implemented by hardware, software, or a combination of hardware and software.

[0140] It should be noted that the communication apparatus in the above embodiments can be a first terminal apparatus, can be a circuit, or can be a chip or other combination device, component, etc. having the functions of the first terminal apparatus. When the communication apparatus is the first terminal apparatus, the transceiver module can be a transceiver, which can include an antenna and a radio frequency circuit, etc., and the processing module can be a processor, such as a central processing unit (CPU). When the communication apparatus is a component having the functions of the first terminal apparatus, the transceiver module can be a radio frequency unit, and the processing module can be a processor. When the communication apparatus is a chip system, the communication apparatus can be a field programmable gate array (FPGA), can be an application specific integrated circuit (ASIC), can also be a system on chip (SoC), can also be a CPU, can also be a network processor (NP), can also be a digital signal processing circuit (digital signal processor, DSP), can also be a micro controller unit (MCU), can also be a programmable logic device (programmable logic device, PLD) or other integrated chip. The processing module can be a processor of the chip system. The transceiver module or the communication interface can be an input / output interface or an interface circuit of the chip system. For example, the interface circuit can be a code / data read / write interface circuit. The interface circuit can be used to receive code instructions (the code instructions are stored in a memory, can be directly read from the memory, or can also be read from the memory through other devices) and transmit to the processor; the processor can be used to run the code instructions to perform the methods in the above method embodiments. For another example, the interface circuit can also be a signal transmission interface circuit between the communication processor and the transceiver.

[0141] The embodiments of the present application further provide a communication system. Specifically, the communication system comprises a network device and a plurality of terminal devices, or can further comprise more network devices and a plurality of terminal devices. For example, the communication system comprises a terminal device (for example, a first terminal device) and a network device for implementing the functions of the above-mentioned Figure 6 . The terminal device is used for implementing the functions of the first terminal device in the above-mentioned Figure 6 . For details, refer to the related description in the method embodiments, which will not be repeated here.

[0142] The embodiments of the present application further provide a computer readable storage medium comprising instructions, which, when executed on a computer, cause the computer to perform the method executed by the first terminal device in the above-mentioned Figure 6 .

[0143] The embodiments of the present application further provide a computer program product comprising instructions, which, when executed on a computer, cause the computer to perform the method executed by the first terminal device in the above-mentioned Figure 6 .

[0144] The embodiments of the present application provide a chip system comprising a processor, and can further comprise a memory for implementing the functions of the first terminal device in the above-mentioned method. The chip system can be composed of a chip, or can comprise a chip and other discrete devices.

[0145] It should be understood that, in various embodiments of the present application, the size of the sequence number of each process described above does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0146] Those of ordinary skill in the art can realize that the various illustrative logical blocks and steps described in connection with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether the functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0147] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-mentioned system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0148] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other manners. For example, the described device embodiments are merely schematic. For example, the division of the units is only a logical function division. There can be another division manner for the actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between the units can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0149] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place, or can be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0150] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the part of the technical solutions of the present application that essentially contributes or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a RAM, a magnetic disk or an optical disk, and various program code storage media.

[0151] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A communication method, characterized in that, The method is applied to a first terminal device, and the method includes: Determine the occupancy rate of at least one resource in a first resource pool, the first resource pool being indicated by configuration information, the at least one resource including resources for a second terminal device to transmit information using Evolved Universal Terrestrial Radio Access (E-UTRA) radio access; When the proportion of resources in the candidate resource set in the first resource pool is less than a first threshold, and the occupancy rate is greater than or equal to a second threshold, the reference signal received power (RSRP) threshold corresponding to the first or second resource in the first resource pool is increased. The RSRP threshold is used to determine available resources. The available resources are used to send information using the new radio NR wireless access. The candidate resource set is the resource set obtained after excluding resources from the first resource pool. Wherein, the first resource is the resource used for the side access control information (SCI) indication sent by the first terminal device, and the side access control information sent by the first terminal device is information using NR radio access; the second resource is the resource for the SCI indication sent by the second terminal device.

2. The method as described in claim 1, characterized in that, The occupancy rate is the channel busy rate (CBR), where CBR is the proportion of resources in the first resource pool whose RSSI is greater than the first RSSI threshold. The resources whose RSSI is greater than the first RSSI threshold are the resources used by the second terminal device to send the information using E-UTRA wireless access.

3. The method as described in claim 1, characterized in that, The occupancy rate is the ratio of the number of resources within the first window used by the second terminal device to transmit information using E-UTRA wireless access to the total number of resources in the first resource pool included in the first window. The length of the first window is configured, pre-configured, or predefined.

4. The method as described in claim 1, characterized in that, The occupancy rate is also determined by the resources in the first resource pool used for at least one of the second terminal devices to send the information using E-UTRA wireless access.

5. A communication device, characterized in that, Includes a processing module and a transceiver module; The processing module is configured to determine the occupancy rate of at least one resource in a first resource pool. When the proportion of resources in the candidate resource set in the first resource pool is less than a first threshold, and the occupancy rate is greater than or equal to a second threshold, the reference signal received power (RSRP) threshold corresponding to the first or second resource is increased. The first resource pool is indicated by configuration information. The at least one resource includes information for a second terminal device to transmit using Evolved Universal Terrestrial Radio Access (E-UTRA). The candidate resource set is a resource set obtained after excluding resources from the first resource pool. The RSRP threshold is used to determine available resources, and the available resources are used to transmit information using New Radio Access (NR). The first resource is a resource indicated by Sidelink Control Information (SCI) transmitted by the communication device, and the Sidelink Control Information transmitted by the communication device is information for using NR radio access. The second resource is a resource indicated by the SCI transmitted by the second terminal device. The transceiver module is used to send side-by-side control information based on NR wireless access.

6. The apparatus as claimed in claim 5, characterized in that, The occupancy rate is the channel busy rate (CBR), where CBR is the proportion of resources in the first resource pool whose RSSI is greater than the first RSSI threshold. The resources whose RSSI is greater than the first RSSI threshold are the resources used by the second terminal device to send the information using E-UTRA wireless access.

7. The apparatus as claimed in claim 5, characterized in that, The occupancy rate is the ratio of the number of resources within the first window used by the second terminal device to transmit information using E-UTRA wireless access to the total number of resources in the first resource pool included in the first window. The length of the first window is configured, pre-configured, or predefined.

8. The apparatus as claimed in claim 5, characterized in that, The occupancy rate is also determined by the resources in the first resource pool used for at least one of the second terminal devices to send the information using E-UTRA wireless access.

9. A communication device, characterized in that, include: The device includes a processor and an interface circuit. The interface circuit is used to receive signals from other communication devices besides the communication device and transmit them to the processor, or to send signals from the processor to other communication devices besides the communication device. The processor is used to implement the method as described in any one of claims 1-4 through logic circuits or execution code instructions.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed, cause the computer to perform the method as described in any one of claims 1-4.

11. A computer program product, characterized in that, The computer program product includes a computer program that, when executed, causes the method as described in any one of claims 1-4 to be performed.

Images