CN113873547A

CN113873547A - Resource allocation method and device

Info

Publication number: CN113873547A
Application number: CN202010851898.9A
Authority: CN
Inventors: 才宇; 徐海博; 姚楚婷
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-06-30
Filing date: 2020-08-21
Publication date: 2021-12-31
Also published as: WO2022001969A1

Abstract

A resource allocation method and device relate to the technical field of communication and are used for allocating side chain resources for a terminal. The method comprises the following steps: the second terminal receives first information sent by the access network equipment, wherein the first information is used for indicating first resources, and the first resources are used for the first terminal to perform side chain communication or the first resources are used for the first terminal to perform side chain discovery; and the second terminal sends second information to the first terminal, wherein the second information is used for indicating the first resource. The method and the device are suitable for the configuration process of the side chain resources.

Description

Resource allocation method and device

The present application claims priority from a chinese patent application filed by the national intellectual property office on 30/06/2020, having application number 202010607563.2 entitled "a method and UE for providing auxiliary information", the entire contents of which are incorporated herein by reference.

Technical Field

The present application relates to the field of communications technologies, and in particular, to a resource allocation method and apparatus.

Background

Device-to-Device (D2D) communication technology based on a cellular network is a technology for direct communication between devices under the control of the network, also referred to as Proximity Service (ProSe) in 3 GPP. Proximity services define a proximity Direct Discovery (ProSe Direct Discovery) technique that allows one ProSe User Equipment (UE) to discover one or more proximate ProSe UEs without going through any network node. Then, two or more ProSe UEs in the vicinity are caused to communicate directly through proximity services Direct Communication (ProSe Direct Communication) technology. The ProSe Direct Discovery is realized by a side chain Discovery (sidelink Discovery) access layer function, and the ProSe Direct Communication is realized by a side chain Communication (sidelink Communication) access layer function.

When the adjacent equipment is in the coverage range of the base station, the adjacent equipment uses the resources broadcasted by the base station to carry out the sidechain communication or sidechain discovery. When the adjacent equipment is out of the coverage range of the base station, the adjacent equipment uses the pre-configured resource for the side chain communication or the side chain discovery.

Currently, some terminals do not have the capability to establish a connection with a base station. That is, even if the terminals are in the coverage of the base station, the terminals cannot acquire the resources for the sidelink communication or the sidelink discovery broadcast by the base station. However, if these terminals use the pre-configured resources for sidelink communication or sidelink discovery within the coverage of the base station, interference may be caused to the communication of other devices.

Therefore, how to acquire resources configured by the base station for sidelink communication or sidelink discovery is an urgent technical problem to be solved for a terminal without the capability of connecting to the base station.

Disclosure of Invention

The application provides a resource allocation method and device, which are used for enabling a terminal which is not in direct communication with a base station to acquire resources which are allocated by the base station and used for side chain communication or side chain discovery.

In a first aspect, a resource configuration method is provided, including: the second terminal receives first information sent by the access network equipment, wherein the first information is used for indicating first resources, and the first resources are used for the first terminal to perform side chain communication, or the first resources are used for the first terminal to perform side chain discovery; and under the condition that a first preset condition is met, the second terminal sends second information to the first terminal, wherein the second information is used for indicating the first resource.

Based on the technical scheme, under the condition that the first terminal does not directly communicate with the access network equipment, the second terminal acquires a first resource from the access network equipment, wherein the first resource is used for side chain communication/side chain discovery of the first terminal; and then, the second terminal sends second information to the first terminal, so that the first terminal can acquire the resources configured by the access network device for side-chain communication/side-chain discovery. In this way, the first terminal performs side-chain communication/side-chain discovery using the resources configured by the access network device within the coverage of the cell managed by the access network device, thereby avoiding affecting normal communication of other terminals.

In one possible design, the first information is used to indicate a first resource, and includes: the first information is used to indicate second resources, which include the first resources.

In one possible design, the method further includes: the second terminal sends third information to the access network equipment, wherein the third information is used for requesting the first resource;

in one possible design, in a case that the first resource is used for the first terminal to perform side chain discovery, the first preset condition includes one or more of the following: the second terminal executes a direct discovery process; or the second terminal measures that the quality of the wireless channel of the target cell is greater than or equal to a first threshold value, and the target cell is a resident cell of the second terminal or a service cell of the second terminal; or the second terminal receives fifth information sent by the access network device or the first terminal, where the fifth information is used to instruct the second terminal to send the second information.

In one possible design, in a case where the first resource is used for the first terminal for the sidelink communication, the first preset condition includes one or more of: the second terminal executes a direct discovery process; or the second terminal measures that the quality of the wireless channel of the target cell is greater than or equal to a first threshold value, and the target cell is a resident cell of the second terminal or a service cell of the second terminal; or the second terminal receives fifth information sent by the access network device or the first terminal, where the fifth information is used to instruct the second terminal to send the second information.

In one possible design, before the second terminal receives the first information sent by the access network device, the method further includes: the second terminal performs a direct discovery procedure with the first terminal.

In one possible design, in a case where the first resource is used for the first terminal for the sidelink communication, the first preset condition includes one or more of: the second terminal is to establish direct communication with the first terminal; or the second terminal measures that the quality of the wireless channel of the target cell is greater than or equal to a first threshold value, and the target cell is a resident cell of the second terminal or a service cell of the second terminal; or, the second terminal receives fifth information sent by the access network device or the first terminal, where the fifth information is used to instruct the second terminal to send the second information, or the fifth information is used to instruct the second terminal to acquire the first resource.

In one possible design, the second terminal sending the second information to the first terminal includes: the second terminal sends the second information to the first terminal on a third resource, which pre-configures a subset of resources for the first terminal to receive the second information.

In one possible design, the method further includes: and under the condition that a second preset condition is met, the second terminal stops sending the second information. Therefore, the signaling overhead is reduced, and the power consumption of the second terminal is saved.

In one possible design, in a case where the first resource is used for the first terminal for the sidelink communication, the second preset condition includes one or more of: the second terminal receives sixth information sent by the access network device or the first terminal, wherein the sixth information is used for indicating the second terminal to stop sending the third information, or the sixth information is used for indicating the second terminal to stop obtaining the first resource; or the second terminal determines that the direct communication connection between the second terminal and the first terminal is disconnected; or the second terminal receives a first high-level indication, wherein the first high-level indication is used for indicating the second terminal to release the direct communication connection; or the second terminal receives a second high-level indication, wherein the second high-level indication is used for indicating the second terminal to stop carrying out the direct communication service; or the second terminal receives a third high-level indication, where the third high-level indication is used to indicate the second terminal to stop performing the direct discovery service.

In one possible design, in the case that the first resource is used for the first terminal to perform side chain discovery, the second preset condition includes one or more of the following: the second terminal receives sixth information sent by the access network device or the first terminal, wherein the sixth information is used for indicating the second terminal to stop sending the third information, or the sixth information is used for indicating the second terminal to stop obtaining the first resource; or the second terminal determines that the direct communication connection between the second terminal and the first terminal is disconnected; or the second terminal receives a first high-level indication, wherein the first high-level indication is used for indicating the second terminal to release the direct communication connection; or the second terminal receives a second high-level indication, wherein the second high-level indication is used for indicating the second terminal to stop carrying out the direct communication service; or the second terminal receives a third high-level instruction, wherein the third high-level instruction is used for instructing the second terminal to stop directly discovering the service; or the second terminal receives the discovery message sent by the first terminal.

In one possible design, the method further includes: and the second terminal sends fourth information to the first terminal, wherein the fourth information is used for indicating whether the first terminal or the second terminal is in the coverage area of a target cell, and the target cell is a resident cell of the second terminal or a service cell of the second terminal. In this way, the first terminal may determine whether itself is within the coverage of the target cell according to the fourth information sent by the second terminal. Furthermore, the first terminal can select a proper resource for side chain communication/side chain discovery, so that the influence on normal communication of other terminals is avoided.

In one possible design, when the first resource is used for sidelink communication for the first terminal, the method further includes: the first terminal transmits and/or receives sidelink communications on the first resource.

In one possible design, when the first resource is used for side-chain discovery by the first terminal, the method further includes: the first terminal transmits and/or receives the sidechain discovery on the first resource.

In a second aspect, a resource allocation method is provided, and the method includes: a first terminal receives second information sent by a second terminal, wherein the second information is used for indicating first resources, and the first resources are used for the first terminal to perform side chain communication, or the first resources are used for the first terminal to perform side chain discovery; and the first terminal determines the first resource according to the second information.

Based on the above technical solution, under the condition that the first terminal does not directly communicate with the access network device, the first terminal can obtain the resource configured by the access network device for side-chain communication/side-chain discovery through the second information sent by the second terminal. In this way, the first terminal performs side-chain communication/side-chain discovery using the resources configured by the access network device within the coverage of the cell managed by the access network device, thereby avoiding affecting normal communication of other terminals.

In one possible design, the receiving, by the first terminal, the second information sent by the second terminal includes: and the first terminal receives the second information sent by the second terminal on a third resource, and the third resource pre-configures a subset of resources for receiving the second information for the first terminal.

In one possible design, the method further includes: and the first terminal sends fifth information to the second terminal, wherein the fifth information is used for indicating the second terminal to send the second information.

In one possible design, the method further includes: and the first terminal sends sixth information to the second terminal, wherein the sixth information is used for indicating the second terminal to stop sending the second information.

In one possible design, the method further includes: the first terminal receives fourth information sent by the second terminal, wherein the fourth information is used for indicating whether the first terminal or the second terminal is in a coverage area of a target cell, and the target cell is a resident cell of the second terminal or a service cell of the second terminal; and the first terminal determines whether the first terminal is in the coverage area of the target cell or not according to the fourth information. Therefore, the first terminal can select proper resources to perform side-chain communication/side-chain discovery, and normal communication of other terminals is prevented from being influenced.

In a third aspect, a resource allocation method is provided, where the method includes: the access network equipment generates first information, wherein the first information comprises first resources, and the first resources are used for the first terminal to perform side chain communication, or the first resources are used for the first terminal to perform side chain discovery; and the access network equipment sends the first information to the second terminal.

Based on the above technical solution, the access network device sends the first information to the second terminal under the condition that the first terminal does not directly communicate with the access network device, thereby achieving the purpose of indirectly configuring the first terminal with resources for side-chain communication/side-chain discovery.

In one possible design, the method further includes: and the access network equipment receives third information sent by the second terminal, wherein the third information is used for requesting the first resource.

In a fourth aspect, a communication device is provided that includes a processing unit and a communication unit. A communication unit, configured to receive first information sent by an access network device, where the first information is used to indicate a first resource, and the first resource is used for a first terminal to perform side-chain communication, or the first resource is used for the first terminal to perform side-chain discovery. And the processing unit is also used for generating second information. And the communication unit is further used for sending second information to the first terminal under the condition that the first preset condition is met, wherein the second information is used for indicating the first resource.

In a possible design, the communication unit is further configured to send third information to the access network device, where the third information is used to request the first resource;

In one possible design, the processing unit is further configured to perform a direct discovery procedure with the first terminal.

In one possible design, the communication unit is further configured to send the second information to the first terminal on a third resource, and the third resource pre-configures a subset of resources for receiving the second information for the first terminal.

In one possible design, the communication unit is further configured to stop sending the second information if a second preset condition is met.

In a possible design, the communication unit is further configured to send fourth information to the first terminal, where the fourth information is used to indicate whether the first terminal or the second terminal is within a coverage area of a target cell, and the target cell is a cell where the second terminal resides or a serving cell of the second terminal.

In one possible design, the communication unit is further configured to transmit and/or receive sidelink communications on the first resource when the first resource is used for sidelink communications for the first terminal.

In one possible design, when the first resource is used for the first terminal to perform the sidechain discovery, the communication unit is further configured to transmit and/or receive the sidechain discovery on the first resource.

In a fifth aspect, a communication device is provided that includes a processing unit and a communication unit. A communication unit, configured to receive second information sent by a second terminal, where the second information is used to indicate a first resource, and the first resource is used for a first terminal to perform a side-chain communication, or the first resource is used for the first terminal to perform a side-chain discovery. And the processing unit is used for determining the first resource according to the second information.

In one possible design, the communication unit is further configured to receive second information sent by the second terminal on a third resource, where the third resource pre-configures, for the first terminal, a subset of resources used for receiving the second information.

In one possible design, the communication unit is further configured to send fifth information to the second terminal, where the fifth information is used to instruct the second terminal to send the second information.

In a possible design, the communication unit is further configured to send sixth information to the second terminal, where the sixth information is used to instruct the second terminal to stop sending the second information.

In a possible design, the communication unit is further configured to receive fourth information sent by the second terminal, where the fourth information is used to indicate whether the first terminal or the second terminal is within a coverage area of a target cell, and the target cell is a camped cell of the second terminal or a serving cell of the second terminal. And the processing unit is further used for determining whether the first terminal is in the coverage area of the target cell according to the fourth information.

In one possible design, when the first resource is used for the first terminal to perform the sidelink communication, the communication unit is further configured to the first terminal to transmit and/or receive the sidelink communication on the first resource.

In one possible design, when the first resource is used for the first terminal to perform the sidechain discovery, the communication unit is further configured to the first terminal to transmit and/or receive the sidechain discovery on the first resource.

In a sixth aspect, a communication device is provided that includes a processing unit and a communication unit. The processing unit is configured to generate first information, where the first information includes a first resource, and the first resource is used for the first terminal to perform side-chain communication, or the first resource is used for the first terminal to perform side-chain discovery. And the communication unit is used for sending the first information to the second terminal.

In a possible design, the communication unit is further configured to receive third information sent by the second terminal, where the third information is used to request the first resource.

In a seventh aspect, a communication device is provided, where the communication device includes a processor and a transceiver, and the processor and the transceiver are configured to implement any one of the methods provided in any one of the first to third aspects. Wherein the processor is configured to perform processing actions in the respective method and the transceiver is configured to perform receiving/transmitting actions in the respective method.

In an eighth aspect, there is provided a chip comprising: processing circuitry and transceiver pins for implementing the method provided in any of the first to third aspects above. The processing circuit is used for executing processing actions in the corresponding method, and the transceiving pin is used for executing receiving/transmitting actions in the corresponding method.

In a ninth aspect, there is provided a computer readable storage medium storing computer instructions which, when run on a computer, cause the computer to perform any one of the methods provided in any one of the first to third aspects.

A tenth aspect provides a computer program product which, when run on a computer, causes the computer to perform any one of the methods provided by any one of the first to third aspects.

In an eleventh aspect, a communication system is provided that includes an access network device, a first terminal, and a second terminal. The first terminal is configured to perform any one of the methods provided by the second aspect. The second terminal is configured to perform any one of the methods provided by the first aspect. The access network apparatus is configured to perform any one of the methods provided in the third aspect.

It should be noted that, for technical effects brought by any design of the fourth aspect to the eleventh aspect, reference may be made to technical effects brought by corresponding designs of the first aspect to the third aspect, and details are not described here again.

Drawings

Fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present application;

fig. 2 is a flow chart of a direct discovery provided by an embodiment of the present application;

fig. 3 is a flow chart of another direct discovery provided by an embodiment of the present application;

fig. 4 is a flowchart of a direct communication according to an embodiment of the present application;

fig. 5 is a schematic diagram of a communication system according to an embodiment of the present application;

fig. 6 is a flowchart of another resource allocation method according to an embodiment of the present application;

fig. 7 is a flowchart of another resource allocation method according to an embodiment of the present application;

fig. 8 is a flowchart of a communication method according to an embodiment of the present application;

fig. 9 is a flowchart of a communication method according to an embodiment of the present application;

fig. 10 is a flowchart of another communication method provided in an embodiment of the present application;

fig. 11 is a flowchart of another resource allocation method according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

In the description of this application, "/" means "or" unless otherwise stated, for example, A/B may mean A or B. "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. Further, "at least one" means one or more, "a plurality" means two or more. The terms "first", "second", and the like do not necessarily limit the number and execution order, and the terms "first", "second", and the like do not necessarily limit the difference.

It is noted that, in the present application, words such as "exemplary" or "for example" are used to mean exemplary, illustrative, or descriptive. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

1. Proximity service direct discovery

The direct discovery technique is a technique for enabling a proximity service terminal (ProSe UE) to discover other proximity service terminals without passing through any network node. The direct discovery technology is realized by side chain discovery (sidelink discovery) access layer function.

Direct discovery technology exists model a (model a) and model b (model b).

model A defines the terminal with the following two roles:

announcing (announcing) the UE for publishing some information, e.g. discovery messages.

Listening (listening) UEs for listening to information of interest.

Model B defines the terminal to have the following two roles:

a discoverer (discoverer) UE, configured to send a request message, which is used to request information that the UE is interested in discovering.

And a discovery (discover) UE, configured to receive the request message and reply information related to the request message of the discover UE.

The direct Discovery technology supports a terminal-to-Network Relay Discovery (UE-to-Network Relay Discovery) function.

UE-to-Network Relay Discovery defines two different terminals, which are: terminal-to-network relay terminal (

UE-to-Network Relay UE) and a Remote terminal (Remote UE). Wherein, the terminal-to-network relay terminal: and the terminal is used for providing a network connection function for the remote terminal. It should be noted that the terminal-to-network relay terminal may be simply referred to as a relay terminal, and the relay terminal is used in the following description. A far-end terminal: and the terminal is not directly connected with the access network equipment and is connected with the access network equipment through the relay terminal. As shown in fig. 1, the network architecture diagram is a diagram in which a remote terminal is connected to a network through a relay terminal. PC5 reference point/interface: reference point/interface between remote terminal and relay terminal. Uu reference point/interface: reference point/interface between relay terminal and radio access network (e.g., NG-RAN, E-UTRAN).

As shown in FIG. 2, based on model A, the direct discovery flow includes the following steps:

s101, the announcing UE sends a discovery notification message.

It should be understood that the announcing UE is not limited to the relay terminal or the remote terminal, but may be other terminals.

Optionally, when the announcing UE is a Relay terminal or a remote terminal, the Discovery notification message may also be referred to as a terminal-to-Network Relay Discovery notification message (UE-to-Network Relay Discovery notification message).

S102, Monitoring UE monitors and/or receives the discovery notification message.

It should be understood that the Monitoring UE is not limited to the relay terminal or the remote terminal, and may be other terminals.

As shown in fig. 3, based on model B, the direct discovery procedure includes the following steps:

s201, the discover UE sends a discovery request message.

It should be understood that the discover UE is not limited to the relay terminal or the remote terminal, but may be other terminals.

Optionally, when the discover UE is a Relay terminal or a remote terminal, the Discovery request message may also be referred to as a terminal-to-Network Relay Discovery request message (UE-to-Network Relay Discovery message).

Optionally, the discovery request message carries a relay service code (relay service code).

When the discover UE matches the relay service code carried by the discovery request message, the discover UE performs the following step S202.

S202, the discover UE sends a discovery response message to the discover UE.

It should be understood that the discovery UE is not limited to the relay terminal or the remote terminal, but may be other terminals.

Optionally, when the Discovery UE is a Relay terminal or a remote terminal, the Discovery response message may also be referred to as a terminal-to-Network Relay Discovery response message (UE-to-Network Relay Discovery message).

2. Proximity services direct communication

The direct communication technology is a technology for enabling direct communication between two or more terminals in the vicinity without passing through any network node. The direct communication technology is realized by a sidelink communication (sidelink communication) access layer function. Direct communication includes using Evolved UMTS Terrestrial Radio Access (E-UTRA) technology or New Radio (NR) technology.

Direct communication is achieved by establishing a Direct link between two or more adjacent terminals through a PC5 interface. It should be understood that the direct link setup procedure is a PC5 signaling protocol procedure between two terminals in direct communication.

As shown in fig. 4, the direct link establishment procedure includes the following steps:

s301, the initial (initiating) UE sends a Direct communication request message (Direct communication request) to the target (target) UE.

It should be understood that the initiating UE and the target UE are not limited to the relay terminal and the remote terminal, but may be other terminals.

Optionally, when the initiating UE is a relay terminal, the target UE is a remote terminal; or, when the target UE is a remote terminal, the initiating UE is a relay terminal.

When the target UE allows direct communication with the initiating UE, the target terminal may perform the following step S302. Alternatively, when the target UE does not allow direct communication with the initiating UE, the target terminal may perform step S303 described below.

S302, the target UE sends a Direct communication acceptance message (Direct communication accept) to the initiating UE.

S303, the target UE sends a Direct communication reject message (Direct communication reject) to the initiating UE.

3. Resources required for direct discovery and direct communication

If the terminal detects that at least one cell on the frequency on which the sidelink communication or sidelink discovery is performed meets the cell selection criterion, the terminal considers itself to be in coverage on that frequency. Otherwise, the terminal considers itself out of coverage on that frequency.

When the terminal is In a coverage area (IC), the resources used by the terminal for direct communication transmission are resources In a resource pool broadcasted by a cell and used for direct communication transmission, or resources In a resource pool configured by the base station for the terminal and used for direct communication transmission. When the terminal is out-of-coverage (OOC), the resources used by the terminal for direct communication transmission are the resources in the pre-configured resource pool for direct communication transmission.

When the terminal is in the coverage area, the resource used by the terminal for direct discovery transmission is a resource in a resource pool broadcasted by a cell and used for direct discovery transmission, or a resource in a resource pool configured by the base station for the terminal and used for direct discovery transmission. When the terminal is out of the coverage area, the resources used by the terminal for direct discovery transmission are the resources in the pre-configured resource pool for direct discovery transmission.

The above is a brief introduction to the terms involved in the embodiments of the present application, and the details are not described below.

The present application provides a resource allocation method, which is suitable for various communication systems, such as a New Radio (NR) communication system using a fifth generation (5G) communication technology, a future evolution system or a multiple communication convergence system, and the like. The technical scheme provided by the application can be applied to various application scenarios, for example, scenarios such as machine-to-machine (M2M), macro-micro communication, enhanced mobile internet (eMBB), ultra-reliable and ultra-low latency communication (urlcc), and mass internet of things communication (mtc).

The network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

As shown in fig. 5, a communication system provided for the embodiment of the present application includes one or more first terminals (only one is shown in fig. 5), one or more second terminals (only one is shown in fig. 5), and one or more access network devices (only one is shown in fig. 5).

In this embodiment, the first terminal does not directly communicate with the access network device. Optionally, the first terminal does not directly communicate with the access network device, and may refer to: the first terminal and the access network device are unable to establish an end-to-end connection at the physical layer, the MAC layer and/or the RLC layer. Specifically, the first terminal cannot directly receive the control signaling or the user plane data sent by the access network device.

Optionally, the first terminal does not communicate directly with the access network device, which may be caused by the following reasons: the first terminal is not located in the coverage area of the access network device, or the first terminal is located at the coverage edge of the access network device, or the first terminal is located in an area with poor signal quality of the access network, or the first terminal cannot be directly served by the access network device, or the first terminal is not provided with a Uu port, or the first terminal closes a direct communication function with the access network device, or the first terminal is located in an energy-saving mode, or the electric quantity of the first terminal is low, or the antenna power of the first terminal is low, and the like.

In an embodiment of the present application, the second terminal may communicate directly with the access network device. That is, when the second terminal is located within the coverage of the cell corresponding to the access network device, the second terminal may initiate an access procedure to the access network device to access the communication network. The second terminal may communicate directly with the access network device, and may refer to: the second terminal and the access network device may establish an end-to-end connection at the physical layer, the MAC layer and/or the RLC layer.

The terminal may be a user equipment with a wireless transceiving function or a chip system provided in the user equipment. Illustratively, the above-described devices may also be referred To As Stations (STAs), UEs, access devices, subscriber units, subscriber stations, mobile stations, remote devices, mobile devices, user equipment, wireless communication devices, user agents, or user equipment. Such devices include, but are not limited to: mobile phone (mobile phone), tablet computer (Pad), computer with wireless transceiving function, Virtual Reality (VR) device, Augmented Reality (AR) device, Road side equipment (RSU), wireless device in industrial control (industrial control), wireless device in unmanned driving (self driving), wireless device in transportation safety (transportation safety), wireless device in smart city (smart city), sensor-type device, such as monitoring device, and the like.

Illustratively, the first terminal and the second terminal communicate directly through sidelink. Besides sidelink, the direct communication between the terminals may also adopt other forms or wireless connections with other names, which is not limited in this application.

The access network device is mainly used for realizing wireless physical layer functions, resource scheduling and wireless resource management, wireless access control and mobility management functions. The access network device may refer to an access network device having a wireless transceiving function, a chip system provided in the access network device, or other forms. The access network devices include, but are not limited to: an Access Point (AP) in a Wi-Fi system, such as a home wireless router, a wireless relay node, a wireless backhaul node, a transmission point (TRP or transmission point, TP), an eNB, a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved node B or home node B), a Base Band Unit (BBU), a 5G system, such as a gbb in NR, or a transmission point (TRP or TP), one or a group of base stations (including multiple antenna panels) in a 5G system, or a network node forming a gbb or transmission point, such as a base band unit (baseband unit), or a distributed unit (distributed unit), DU), and the like.

In some deployments, the gNB may include a Centralized Unit (CU) and a Distributed Unit (DU). The gNB may also include a Radio Unit (RU). The CU implements part of the function of the gNB and the DU implements part of the function of the gNB. For example, a CU implements functions of a Radio Resource Control (RRC), a Packet Data Convergence Protocol (PDCP) layer, and a Service Discovery Application Profile (SDAP) layer, and a DU implements functions of a Radio Link Control (RLC), a Media Access Control (MAC), and a Physical (PHY) layer. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as RRC layer signaling or PHCP layer signaling, may also be considered to be transmitted by the DU or by the DU + RU under this architecture. It is to be understood that the access network device may be a CU node, or a DU node, or a device comprising a CU node and a DU node. In addition, the CU may be divided into access network devices in a Radio Access Network (RAN), or may be divided into access network devices in a Core Network (CN), which is not limited herein.

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

As shown in fig. 6, a resource allocation method provided in this embodiment of the present application includes the following steps:

s401, the second terminal receives first information sent by the access network equipment.

Optionally, the first information may be resource pool configuration information. Or, the first information is time domain resource allocation information and/or frequency domain resource allocation information.

Optionally, the first information may be carried in an RRC message, or a System Information Block (SIB), or a Media Access Control (MAC) Control Element (CE), or Downlink Control Information (DCI), and the like, which is not limited in this embodiment of the present invention.

In an embodiment of the present application, the first information is used to indicate the first resource.

In one possible design, the first resource is used for the first terminal to perform the sidelink communication, or the first resource is used for the first terminal to perform the sidelink discovery.

Optionally, the first resource is used for the first terminal to perform the sidelink communication, which may be understood as: the first terminal transmits or receives sidelink communications on a first resource. It is to be understood that transmitting or receiving sidelink communications on the first resource may be transmitting or receiving sidelink communications on one or more of the first resources.

The transmit sidelink communications include transmit sidelink communications data or signaling, and the receive sidelink communications include receive sidelink communications data or signaling. The sidelink communication data is transmitted on a physical sidelink shared channel (PSCCH), and the sidelink signaling is transmitted on the PSCCH or a Physical Sidelink Control Channel (PSCCH). That is, transmitting the sidelink communications includes transmitting the PSCCH and/or PSCCH. Receiving the side chain communication includes receiving the psch and/or PSCCH.

Optionally, the first resource is used for the first terminal to perform side chain discovery, and may be understood as: the first terminal transmits or receives a side chain discovery on a first resource. Transmitting the sidechain discovery includes transmitting a sidechain discovery message and receiving the sidechain communication includes receiving the sidechain discovery message. The sidelink discovery message may be transmitted over a physical sidelink discovery new (PSDCH). That is, transmit side chain discovery includes transmitting PSDCH. Receive side chain discovery includes receiving a PSDCH.

In another possible design, the first resource is used for the first terminal to perform direct communication, or the first resource is used for the first terminal to perform direct discovery.

Optionally, the first resource is used for the first terminal to perform direct communication, and may be understood as: the first terminal may send and/or receive data and/or signaling of the direct communication on the first resource. Data or signaling for direct communication is transmitted on the psch.

Optionally, the first resource is used for the first terminal to perform direct discovery, and may be understood as: the first terminal may transmit or receive the direct discovery message on the first resource. The direct discovery message may be transmitted on the PSDCH or the PSSCH.

It is to be understood that the method hereinafter applicable to direct discovery is also applicable to side chain discovery, and the method applicable to direct communication is also applicable to side chain communication.

The first resource may include one or more resources. Alternatively, the first resource may comprise one or more resource pools, and a resource pool may comprise one or more resources. Alternatively, the resource pool may have other names, such as resource set, but not limited thereto.

The resources may be time domain resources, frequency domain resources, or time frequency resources. It should be understood that, in the frequency domain, one resource may include one or more Physical Resource Blocks (PRBs), or one resource includes one or more subchannels. One subchannel is composed of one or more PRBs. One PRB includes one or more subcarriers. In the time domain, one resource includes one or more time units, which may be slots, subframes, minislots, symbols, frames.

In the frequency domain, the resource pool includes one or more PRBs, or the resource pool includes one or more subchannels. In the time domain, a resource pool includes one or more time units.

Optionally, the first information is used to indicate the first resource, and there are two cases:

in case 1, any resource indicated by the first information is the first resource.

Case 2, the first information is used to indicate the second resource, and the first resource is a part of the second resource.

Optionally, the second resource is a resource configured by the access network device for direct communication or direct discovery. Alternatively, the second resource is a resource configured by the access network device for sidelink communication or sidelink discovery.

Based on the case 2, for a first terminal, the second terminal may select a part of resources from the second resources as the first resources corresponding to the first terminal.

For example, the second resource indicated by the first information includes resource #1, resource #2, resource #3, and resource #4, and the second terminal may determine resource #1 and resource #2 as the first resource.

Optionally, the second terminal may allocate different first resources to different first terminals.

For example, assuming that terminal 1 is the second terminal and terminal 2 and terminal 3 are the first terminals, and the second resource indicated by the first information includes resource #1, resource #2, resource #3 and resource #4, terminal 1 may determine that the first resource corresponding to terminal 2 is resource #1 and resource #2 and the first resource corresponding to terminal 3 is resource #3 and resource # 4.

Optionally, the second terminal may allocate the same first resource to different first terminals.

For example, assuming that terminal 1 is the second terminal and terminal 2 and terminal 3 are the first terminals, and assuming that the second resource indicated by the first information includes resource #1, resource #2, resource #3 and resource #4, terminal 1 may determine that the first resource corresponding to terminal 2 is resource #1 and resource #2 and the first resource corresponding to terminal 3 is resource #1 and resource # 2.

In this embodiment of the application, the first information is used to indicate a resource (e.g., a first resource or a second resource), and may be implemented in the following manner 1 or manner 2.

In the method 1, the first information includes configuration parameters of the resource. For example, for the time domain resource, the configuration parameter of the time domain resource may include a time domain starting position, or a time length, etc. For the frequency domain resources, the configuration parameters of the frequency domain resources may include a frequency domain starting position, or a frequency domain width, etc.

In the method 2, the first information includes an index of the resource.

Based on the mode 2, the second terminal may pre-configure configuration parameters of a plurality of resources and indexes of the plurality of resources. Furthermore, the second terminal may determine the configuration parameter of the resource indicated by the first information according to the index of the resource included in the first information.

In a possible implementation manner of step S401, the second terminal receives the first information broadcast by the access network device.

In another possible implementation manner of step S401, the second terminal sends third information to the access network device, where the third information is used to request the first resource. And then, the second terminal receives the first information sent by the access network equipment. The third information may be RRC signaling, such as a SidelinkUEInformation RRC message. Alternatively, the third information may also be a MAC CE, such as a Buffer Status Report (BSR) MAC CE.

Optionally, the second terminal may actively send the third information to the access network device. For example, when the information broadcasted by the access network device does not contain the second resource or the first resource, the second terminal sends third information to the access network device.

Alternatively, the second terminal may send the third information to the access network device under the trigger of the other device. For example, the second terminal receives fifth information sent by the access network device or the first terminal, and the fifth information triggers the second terminal to send third information; and then the second terminal sends third information to the access network equipment.

S402, the second terminal sends the second information to the first terminal, so that the first terminal receives the second information sent by the second terminal.

Wherein the second information is used for indicating the first resource.

Optionally, the second information is used to indicate the first resource, and may be implemented in the following manner 1 or manner 2.

In the method 1, the second information includes a configuration parameter of the first resource.

In mode 2, the second information includes an index of the first resource.

Optionally, the second information may be resource pool configuration information, or the second information is time domain resource allocation information and/or frequency resource allocation information, which is not limited in this embodiment of the present application.

In one possible design, the second information includes part or all of cells (IE) in the first information or part or all of fields (also called fields) in the first information.

In another possible design, the second terminal determines the first resource according to the first information and then generates second information indicating the first resource.

Optionally, the second Information may be carried in a PC5 RRC message, or a PC5-S message, or a PC5 System Information Block (SIB), or a Sidelink SIB, or a PC5 main message block (master Information block, MIB), or a Sidelink MIB, or a Discovery message (e.g., a Relay Discovery Additional Information message), or a Sidelink MAC CE, or an SCI, which is not limited in this embodiment.

Optionally, the second information may be carried in the discovery message. The discovery message is a message in a direct discovery procedure. Illustratively, the discovery message may be the terminal-to-network relay discovery announcement message in fig. 1, or the terminal-to-network relay discovery request message in fig. 2, or the terminal-to-network relay discovery response message in fig. 2. The description is unified here and will not be repeated below.

Optionally, in a case that the first resource is used for direct communication or sidelink communication of the first terminal, the second information may be carried in a direct communication request message or a direct communication accept message.

As a possible implementation, the second terminal sends the second information to the first terminal on the third resource. Correspondingly, the first terminal receives the second information sent by the second terminal on the third resource.

It will be appreciated that the second terminal may be pre-configured with one or more third resources. Or, the second terminal may determine the third resource according to indication information issued by the access network device, where the resource indicated by the indication information includes the third resource. Alternatively, the indication information and the first information may be contained in the same message.

Optionally, in a case that the first terminal receives the second information, the first terminal may send response information to the second terminal, where the response information is used for responding to the second information. Accordingly, the second terminal may receive the response information sent by the first terminal.

It should be understood that the resource for transmitting the response information may be a resource for the first terminal to receive the second information, or a resource pre-configured for transmitting the response information.

Optionally, in order to reduce the probability that the first terminal misses receiving the second information, the second terminal should send the second information multiple times.

Optionally, the second terminal sends the second information to the first terminal in the uplink direction, and any one of the following implementation manners may be adopted:

in the first implementation manner, the second terminal periodically sends the second information on the third resource.

It should be understood that the time interval between the two transmissions of the second information may be determined by the second terminal, or may be specified by the communication protocol.

In a second implementation, the second terminal transmits the second information in a polling manner on the plurality of third resources.

For example, the second terminal acquires the third resource #1, the third resource #2, and the third resource # 3. Thereafter, the second terminal transmits the second information using the third resource #1 at time 1, transmits the second information using the third resource #2 at time 2, and transmits the second information using the third resource #3 at time 3.

And in the third implementation mode, the second terminal sends the second information on the third resource. After transmitting the second information, the second terminal sets a timer. And in the case that the timer is overtime, the second terminal retransmits the second information.

It should be appreciated that the second terminal may cancel the timer when it receives the response message from the first terminal.

S403, the first terminal determines the first resource according to the second information.

As a possible implementation manner, the first terminal determines the configuration parameter of the first resource according to the second information. And then, the first terminal determines the first resource according to the configuration parameter of the first resource.

Based on the technical scheme shown in fig. 6, under the condition that the first terminal does not have the function of communicating with the access network device, the second terminal acquires the first resource from the access network device, wherein the first resource is used for direct communication/direct discovery/side chain communication/side chain discovery of the first terminal; and then, the second terminal sends second information to the first terminal, so that the first terminal can acquire the resources configured by the access network device for direct communication/direct discovery/side chain communication/side chain discovery. In this way, the first terminal uses the resources configured by the access network device to perform direct communication/direct discovery/sidelink communication/sidelink discovery within the coverage of the cell managed by the access network device, thereby avoiding affecting the normal communication of other terminals.

Optionally, in the embodiment shown in fig. 6, the second terminal should execute step S401 or S402 if the first preset condition is met.

Optionally, in a case that the first resource is used for the first terminal to perform direct discovery or side chain discovery, the first preset condition includes one or more of the following combinations:

condition 1-1, the second terminal performs a direct discovery procedure.

Alternatively, condition 1-1 may be specifically implemented as: when the second terminal sends a discovery message; or, the second terminal has sent a discovery message; or the second terminal is to send a discovery message; or the second terminal monitors the discovery message; when the second terminal transmits the side chain discovery; alternatively, the second terminal has sent side chain discovery; alternatively, the second terminal is about to send side chain discovery; still alternatively, the second terminal listens for side chain discovery.

Illustratively, the discovery message sent by the second terminal may be: a discovery message sent by the second terminal as a discover UE, or a request message.

Illustratively, the discovery message listened to by the second terminal may be: a discovery message or an announcement message sent by an Announcing UE; or a discovery message sent by the discover UE, or a request message.

In condition 1-2, the second terminal measures that the radio channel quality of the target cell is greater than or equal to the first threshold.

The target cell is a resident cell of the second terminal or a serving cell of the second terminal. The resident cell of the second terminal is: the cell selected by the second terminal but with which the second terminal has not established a connection. The serving cell of the second terminal is: and a cell establishing connection with the second terminal and providing service for the second terminal.

It should be understood that the strength of the received signal may reflect the wireless channel quality. Illustratively, the wireless channel Quality may be Reference Signal Receiving Power (RSRP) or Reference Signal Receiving Quality (RSRQ).

In the embodiment of the present application, the first threshold may be set by the second terminal or may be specified by a communication protocol.

Illustratively, the first threshold may be set to 50dbm when the radio channel quality of the target cell is the reference signal received power.

And in the condition 1-3, the second terminal receives fifth information sent by the access network equipment or the first terminal. The fifth information is used for indicating the second terminal to acquire the first resource; or the fifth information is used for indicating the second terminal to send the second information; alternatively, the fifth information is used to indicate that the resource is requested.

It should be understood that the above-described conditions 1-1 to 1-3 are merely exemplary illustrations of the first preset conditions, and the first preset conditions are not limited thereto.

Optionally, in a case that the first resource is used for the first terminal to perform direct communication or sidelink communication, if the second terminal does not perform the direct discovery procedure with the first terminal before performing step S401, the first preset condition includes one or more of the following combinations:

condition 1-1, the second terminal performs a direct discovery procedure.

And in the condition 1-3, the second terminal receives fifth information sent by the access network equipment or the first terminal.

Optionally, in a case that the first resource is used for the first terminal to perform direct communication or side-chain communication, if the second terminal has performed the direct discovery procedure with the first terminal before performing step S401, the first preset condition includes one or more of the following combinations:

And the conditions 1-4 are that the second terminal is to establish a direct communication connection with the first terminal.

Alternatively, conditions 1 to 4 may be specifically implemented as: when the second terminal transmits a direct communication request message to the first terminal; or after the second terminal sends the direct communication request message to the first terminal.

Optionally, the first preset condition includes a combination of the following multiple items, which may mean that the first preset condition may be obtained by combining the multiple sub-conditions.

In one possible design, when the first preset condition is formed by combining a plurality of sub-conditions, and when the plurality of sub-conditions combined into the first preset condition are satisfied, the second terminal acquires the first resource according to the first information. In case any one of the sub-conditions is not satisfied, the second terminal does not acquire the first resource.

For example, the first preset condition may be a combination of the conditions 1-1 and 1-2. In this way, the second terminal acquires the first resource according to the first information when the condition 1-1 and the condition 1-2 are satisfied. And in the case that the condition 1-1 and/or the condition 1-2 are/is not met, the second terminal does not acquire the first resource.

In another possible design, when the first preset condition is formed by combining a plurality of sub-conditions, satisfying any one of the sub-conditions in the first preset condition is equivalent to satisfying the first preset condition.

Optionally, on the basis of the technical solution shown in fig. 6, as shown in fig. 7, the method may further include step S404 after step S403.

S404, the second terminal stops sending the second information.

As a possible implementation manner, in case that the second preset condition is met, the second terminal stops sending the second information.

Optionally, in a case that the first resource is used for the first terminal to perform direct communication or sidelink communication, the second preset condition includes one or more of the following:

and 2-1, the second terminal receives sixth information sent by the access network equipment or the first terminal. And the sixth information is used for indicating the second terminal to stop sending the third information. Or, the sixth information is used to instruct the second terminal to stop acquiring the first resource.

Optionally, the sixth information may be response information of the second information.

Optionally, after the direct communication connection is established between the first terminal and the second terminal, the second terminal receives sixth information sent by the access network device or the first terminal.

Condition 2-2, the second terminal determines that the direct communication connection between the second terminal and the first terminal has been disconnected or released.

Condition 2-3, the second terminal receives the first high level indication. Wherein the first high-level indication is used for indicating the second terminal to release the direct communication connection.

Condition 2-4, the second terminal receives the second high level indication. Wherein the second high-level indication is used for indicating the second terminal to stop performing the direct communication service.

Condition 2-5, the second terminal receives the third high level indication. And the third high-level indication is used for indicating the second terminal to stop carrying out the direct discovery service.

Optionally, in a case that the first resource is used for the first terminal to perform direct discovery or side chain discovery, the second preset condition includes one or more of the following:

Condition 2-2, the second terminal determines that the direct communication connection between the second terminal and the first terminal has been broken.

And 2-6, the second terminal receives the discovery message sent by the first terminal.

Optionally, the resource used by the first terminal to send the discovery message may be the first resource.

Condition 2-7, the second terminal receives the direct communication request message sent by the first terminal.

Condition 2-8, the second terminal has established a direct communication connection with the first terminal.

And 2-8, the second terminal receives the side-chain communication sent by the first terminal.

For example, the above-mentioned high-layer indication (e.g. the first high-layer indication) may be an indication of a PC5 signaling layer, or an indication of a PC5 RRC layer, or an indication of an application layer, which is not limited in this embodiment of the present application.

Based on the technical scheme shown in fig. 7, the second terminal may stop sending the second information in a suitable scene, thereby reducing signaling overhead.

Optionally, when the first resource is used for direct discovery of the first terminal, the first terminal sends signaling or data for direct discovery on the first resource, and the second terminal receives the signaling or data for direct discovery on the first resource; or the second terminal sends the directly discovered signaling or data on the first resource, and the first terminal receives the directly discovered signaling or data on the first resource.

Optionally, in a case that the first resource is used for side chain discovery of the first terminal, the first terminal transmits side chain discovery on the first resource, and the second terminal receives side chain discovery on the first resource. Alternatively, the second terminal transmits the side chain discovery on the first resource and the first terminal receives the side chain discovery on the first resource.

For example, the embodiments shown in fig. 8 or fig. 9 may be performed between the first terminal and the second terminal.

As shown in fig. 8, a communication method provided for the embodiment of the present application includes the following steps:

s501, the first terminal sends a discovery notification message on the first resource.

Wherein the discovery announcement message is used to make the other terminals aware of the presence of the first terminal. The discovery announcement message causes the first terminal to announce the availability of the relay connection service provided by the first terminal to the other terminals. The discovery announcement message may also cause other terminals to measure discovery message signal strength for relay selection or relay reselection by the other terminals. The signal strength of the discovery message may specifically be a received power of a reference signal associated with a channel used for transmitting the discovery message.

S502, the second terminal monitors the discovery notification message on the first resource.

Based on the technical scheme shown in fig. 8, when the first terminal and the second terminal are in the coverage area of the target cell, the first terminal and the second terminal use the first resource to perform the direct discovery process, so that the influence on the normal communication of other terminals can be avoided.

As shown in fig. 9, a communication method provided for the embodiment of the present application includes the following steps:

s601, the first terminal sends a discovery request message on the first resource, so that the second terminal receives the discovery request message on the first resource.

S602, the second terminal sends a discovery response message on the first resource, so that the first terminal receives the discovery response message on the first resource.

Based on the embodiment shown in fig. 9, when the first terminal and the second terminal are in the coverage area of the target cell, the first terminal and the second terminal use the first resource to perform the direct discovery process, so that the influence on the normal communication of other terminals can be avoided.

Optionally, when the first resource is used for direct communication of the first terminal, the first terminal sends data or signaling of the direct communication on the first resource, and the second terminal receives the data or signaling of the direct communication on the first resource; or the second terminal sends the data or signaling of direct communication on the first resource, and the first terminal receives the data or signaling of direct communication on the first resource.

Optionally, in a case that the first resource is used for a sidelink communication of the first terminal, the first terminal sends the sidelink communication on the first resource, and the second terminal receives the sidelink communication on the first resource; alternatively, the second terminal transmits the sidelink communications on the first resource and the first terminal receives the sidelink communications on the first resource.

Illustratively, the embodiment shown in fig. 10 may be performed between the first terminal and the second terminal.

As shown in fig. 10, a communication method provided for the embodiment of the present application includes the following steps:

s701, the first terminal sends a direct communication request message to the second terminal on the first resource, so that the second terminal receives the direct communication request message sent by the first terminal on the first resource.

Wherein the direct communication request message is for requesting establishment of a direct communication connection.

When the second terminal allows direct communication with the first terminal, the second terminal performs the following step S702; otherwise, the second terminal performs the following step S703.

S702, the second terminal sends a direct communication accept message to the first terminal on the first resource, so that the first terminal receives the direct communication accept message sent by the second terminal on the first resource.

S703, the second terminal sends a direct communication reject message to the first terminal on the first resource, so that the first terminal receives the direct communication reject message sent by the second terminal on the first resource.

Based on the embodiment shown in fig. 10, when the first terminal and the second terminal are in the coverage area of the target cell, the first terminal and the second terminal use the first resource to perform the direct communication process, so that the influence on the normal communication of other terminals can be avoided.

Alternatively, in the embodiments shown in fig. 8 to 10, the operation performed by the first terminal may be performed by the second terminal instead, and the operation performed by the second terminal may be performed by the first terminal instead.

Optionally, the first terminal does not have a function of communicating with the access network device, so that the first terminal cannot accurately determine whether the first terminal is located within a cell coverage area. Therefore, a first terminal in the cell coverage may use the pre-configured resources for direct discovery or direct communication, causing interference to other terminals. Or, a first terminal out of the coverage of the cell uses the resources configured by the base station to perform direct discovery or direct communication, thereby causing interference to other terminals.

In order to solve this technical problem, as shown in fig. 11, the present application provides a resource allocation method. The embodiment shown in fig. 11 may be combined with any of the embodiments shown in fig. 6-10 described above. As shown in fig. 11, the method comprises the steps of:

and S801, the second terminal generates fourth information.

In a possible implementation manner, the fourth information is used to indicate whether the target terminal is in the coverage of the target cell. That is, the fourth information may be used to indicate that the target terminal is within the coverage of the target cell. Alternatively, the fourth information may be used to indicate that the target terminal is out of the coverage of the target cell. The target terminal may be a second terminal or a first terminal.

The target cell is a first terminal resident cell or a serving cell, or the target cell is a second terminal resident cell or a serving cell. The definitions of the camping cell and the serving cell may refer to the foregoing description, and are not described herein again.

Optionally, the fourth information may adopt any one of the following designs:

design 1, when the fourth information includes the first information element, the fourth information is used to indicate that the target terminal is in the coverage of the target cell. Or, when the fourth information does not include the first information element, the fourth information is used to indicate that the target terminal is out of the coverage of the target cell.

Design 2, when the fourth information includes the first information element, the fourth information is used to indicate that the target terminal is out of the coverage of the target cell. Or, when the fourth information does not include the first information element, the fourth information is used for indicating that the target terminal is in the coverage of the target cell.

Design 3, when the fourth information includes the first cell whose value is the first enumeration value, the fourth information is used for indicating that the target terminal is in the coverage of the target cell. Or, when the fourth information includes the first cell whose value is the second enumerated value, the fourth information is used for indicating that the target terminal is out of the coverage of the target cell.

Illustratively, the first enumerated value may be true. The second enumerated value may be false.

It should be understood that when the second terminal determines that the target terminal is in the coverage of the target cell, the fourth information generated by the second terminal is used to indicate that the target terminal is in the coverage of the target cell. And when the second terminal determines that the target terminal is out of the coverage of the target cell, the fourth information generated by the second terminal is used for indicating that the target terminal is out of the coverage of the target cell.

Optionally, the second terminal may determine whether the target terminal is in the coverage of the target cell according to factors such as the wireless signal quality of the target cell.

Taking the target terminal as the first terminal for example, when the wireless signal quality of the target cell is smaller than the preset value, it is indicated that the second terminal is located at the coverage edge of the target cell, and then the first terminal near the second terminal has a high probability of being outside the coverage area of the target cell, so the second terminal can consider that the first terminal is located outside the coverage area of the target cell. Or, when the wireless signal quality of the target cell is greater than or equal to the preset value, it indicates that the second terminal is located in the coverage center of the target cell, and then the first terminal near the second terminal has a high probability of being within the coverage area of the target cell, so the second terminal can consider that the first terminal is located within the coverage area of the target cell.

In another possible implementation manner, the fourth information is used to indicate whether the radio channel quality of the target cell measured by the second terminal is greater than or equal to a second threshold.

Optionally, the fourth information may adopt any one of the following designs:

design 1, when the fourth information includes the first information element, the fourth information is used to indicate that the radio channel quality of the target cell measured by the second terminal is greater than or equal to a second threshold. Or, when the fourth information does not include the first information element, the fourth information is used to indicate that the radio channel quality of the target cell measured by the second terminal is less than the second threshold.

Design 2, when the fourth information includes the first information element, the fourth information is used to indicate that the radio channel quality of the target cell measured by the second terminal is less than the second threshold. Or, when the fourth information does not include the first information element, the fourth information is used for indicating that the radio channel quality of the target cell measured by the second terminal is greater than or equal to the second threshold.

Design 3, when the fourth information includes the first cell whose value is the first enumerated value, the fourth information is used for indicating that the wireless channel quality of the target cell measured by the second terminal is greater than or equal to the second threshold value. Or, when the fourth information includes the first cell whose value is the second enumerated value, the fourth information is used to indicate that the radio channel quality of the target cell measured by the second terminal is less than the second threshold.

S802, the second terminal sends fourth information to the first terminal, so that the first terminal receives the fourth information sent by the second terminal.

Optionally, the fourth information may be carried in a RRC message of the PC5, or a PC5-S message, or a PC5 system message block (SIB), or a sidelink SIB, or a PC5 main message block (master information block, MIB), or a sidelink MIB, or synchronization information, or a Media Access Control (MAC) control unit (control element, CE), or sidelink control information (sidelink control information, SCI), or a discovery message, which is not limited in this embodiment.

For example, when the fourth information is carried in the sidelink MIB or the synchronization information, the first cell in the fourth information may be a sidelink MIB or an coverage cell in the synchronization information.

As a possible implementation, the second terminal sends the fourth information to the first terminal on the third resource. Correspondingly, the first terminal receives the fourth information sent by the second terminal on the fourth resource.

As another possible implementation, after the second terminal sends the second information to the first terminal, the second terminal sends the fourth information to the first terminal on the first resource. Correspondingly, the first terminal receives the fourth information sent by the second terminal on the first resource.

And S803, the first terminal determines whether the first terminal is in the coverage area of the target cell according to the fourth information.

As a possible implementation manner, when the fourth information is used to indicate that the target terminal is out of the coverage of the target cell, the first terminal determines that the first terminal is out of the coverage of the target cell. Or, when the fourth information is used to indicate that the target terminal is in the coverage of the target cell, the first terminal determines that the first terminal is in the coverage of the target cell.

As another possible implementation manner, if the fourth information is used to indicate that the radio channel quality of the target cell measured by the second terminal is greater than or equal to the second threshold, the first terminal determines that the first terminal is within the coverage of the target cell. And if the fourth information is used for indicating that the wireless channel quality of the target cell measured by the second terminal is less than the second threshold, the first terminal determines that the first terminal is out of the coverage range of the target cell.

Further, the first terminal may determine the resource used by the first terminal according to the fourth information.

That is, when the fourth information is used to indicate that the target terminal is out of the coverage of the target cell, or when the fourth information is used to indicate that the radio channel quality of the target cell measured by the second terminal is less than the second threshold, the first terminal performs the sidechain communication or the sidechain discovery using the preconfigured resource.

When the fourth information is used to indicate that the target terminal is in the coverage of the target cell, or when the fourth information is used to indicate that the radio channel quality of the target cell measured by the second terminal is greater than or equal to the second threshold, the first terminal performs the side-chain communication or the side-chain discovery using the first resource in the foregoing embodiment.

Based on the embodiment shown in fig. 11, the first terminal may determine whether itself is in the coverage of the target cell according to the fourth information sent by the second terminal. Furthermore, the first terminal can select a proper resource for direct communication/direct discovery/side chain communication/side chain discovery, thereby avoiding influencing the normal communication of other terminals.

The above-mentioned scheme provided by the embodiment of the present application is introduced mainly from the perspective of interaction between different network elements. It is to be understood that the first terminal, the second terminal and the access network device, in order to implement the above functions, include corresponding hardware structures and/or software modules for performing the respective functions. The elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein may be embodied in hardware or in a combination of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present teachings.

In the embodiment of the present application, the communication apparatus may be divided into the functional units according to the method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

As shown in fig. 12, a communication apparatus provided in the embodiment of the present application includes a processing unit 1202 and a communication unit 1203.

Illustratively, when the communications apparatus is configured to implement the functionality of the second terminal as described above, the processing unit 1202 may be configured to enable the second terminal to perform generating information (e.g., generating the second information), parsing information (e.g., parsing the first information), and/or other processes for aspects described herein. The communication unit 1203 may be configured to support the second terminal to perform steps S401-S402 in fig. 6, steps S404 in fig. 7, steps S502 in fig. 8, steps S601-S602 in fig. 9, steps S701-S703 in fig. 10, step S802 in fig. 11, and/or other processes for the schemes described herein.

Illustratively, when the communication apparatus is configured to implement the functionality of the first terminal described above, the processing unit 1202 may be configured to enable the first terminal to perform step S403 in fig. 6 and step S803 in fig. 11, and/or other processes for the schemes described herein. The communication unit 1203 may be configured to support the first terminal to perform step S402 in fig. 6, step S501 in fig. 8, steps S601 and S602 in fig. 9, steps S701-S703 in fig. 10, step S802 in fig. 11, and/or other processes for the schemes described herein.

Illustratively, when the communications apparatus is configured to implement the access network device described above, the processing unit 1202 may be configured to enable the access network device to generate the first information, and/or other processes for the schemes described herein. The communication unit 1203 may be utilized to support the access network device in transmitting the first information, receiving the third information, and/or other processes for the schemes described herein.

Optionally, the communication device may further include a storage unit 1201 for storing program codes and data of the device, which may include, but is not limited to, raw data or intermediate data, etc.

The processing unit 1202 may be a processor or a controller, such as a CPU, a general purpose processor, a programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., a combination of one or more microprocessors, a Digital Signal Processor (DSP) and a microprocessor, or the like.

The communication unit 1203 may be a communication interface, a transceiver, a transceiving circuit, or the like. The communication interface is a generic term. In a specific implementation, the communication interface may include a plurality of interfaces, which may include, for example: interfaces between base stations and terminals, and/or other interfaces.

The storage unit 1201 may be a memory.

When the processing unit 1202 is a processor, the communication unit 1203 is a communication interface, and the storage unit 1201 is a memory, the communication apparatus shown in fig. 12 can be implemented by the structure shown in fig. 13.

Referring to fig. 13, the apparatus 1300 includes: processor 1302, communication interface 1303, memory 1301. Optionally, the apparatus 1300 may also include a bus 1304. The communication interface 1303, the processor 1302, and the memory 1301 may be connected to each other through a bus 1304; the bus 1304 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus 1304 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 13, but this is not intended to represent only one bus or type of bus.

Optionally, an embodiment of the present application further provides a computer-readable storage medium, which stores computer instructions that, when executed on a computer, cause the computer to perform any one of the methods provided in fig. 6 to 11.

Optionally, the present application further provides a computer program product, which when executed on a computer, causes the computer to execute any one of the methods provided in fig. 6 to 11.

Optionally, an embodiment of the present application further provides a chip, including: processing circuitry and transceiver pins for implementing the methods provided in figures 6 to 11. The processing circuit is used for executing processing actions in the corresponding method, and the transceiving pin is used for executing receiving/transmitting actions in the corresponding method.

Those of ordinary skill in the art will understand that: in the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device including one or more available media integrated servers, data centers, and the like. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., Digital Video Disk (DVD)), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of devices. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each functional unit may exist independently, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented by software plus necessary general hardware, and certainly, the present application can also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application may be substantially implemented or a part of the technical solutions contributing to the prior art may be embodied in the form of a software product, where the computer software product is stored in a readable storage medium, such as a floppy disk, a hard disk, or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods described in the embodiments of the present application.

In combination with the above, the present application also provides the following embodiments:

embodiment 1, a resource allocation method, wherein the method comprises:

a second terminal receives first information sent by access network equipment, wherein the first information is used for indicating first resources, and the first resources are used for a first terminal to perform side chain communication, or the first resources are used for the first terminal to perform side chain discovery;

and the second terminal sends second information to the first terminal under the condition that a first preset condition is met, wherein the second information is used for indicating the first resource.

Embodiment 2 is the method according to embodiment 1, wherein the first information is used for indicating a first resource, and includes:

the first information is used for indicating a second resource, and the second resource comprises the first resource.

Embodiment 3, the method of embodiment 1 or 2, wherein the method further comprises:

the second terminal sends third information to the access network equipment, wherein the third information is used for requesting the first resource;

embodiment 4, the method according to any one of embodiments 1 to 3, wherein in a case that the first resource is used for a first terminal to perform side chain discovery, the first preset condition includes one or more of:

the second terminal executes a direct discovery process; or,

the second terminal measures that the quality of a wireless channel of a target cell is greater than or equal to a first threshold value, wherein the target cell is a resident cell of the second terminal or a service cell of the second terminal; or,

and the second terminal receives fifth information sent by the access network equipment or the first terminal, wherein the fifth information is used for indicating the second terminal to send the second information.

Embodiment 5, the method according to any one of embodiments 1 to 3, wherein in a case that the first resource is used for a first terminal to perform a sidelink communication, the first preset condition includes one or more of:

the second terminal executes a direct discovery process; or,

Embodiment 6, the method according to any one of embodiments 1 to 3, wherein before the second terminal receives the first information sent by the access network device, the method further includes:

the second terminal and the first terminal execute a direct discovery process.

Embodiment 7 is the method according to embodiment 6, wherein in a case that the first resource is used for the first terminal to perform the sidelink communication, the first preset condition includes one or more of the following:

the second terminal is to establish direct communication with the first terminal; or,

and the second terminal receives fifth information sent by the access network device or the first terminal, wherein the fifth information is used for indicating the second terminal to send the second information, or the fifth information is used for indicating the second terminal to acquire the first resource.

Embodiment 8 and the method according to any of embodiments 1 to 7, wherein the sending, by the second terminal, second information to the first terminal includes:

the second terminal sends the second information to the first terminal on a third resource, which pre-configures a subset of resources for the first terminal to receive the second information.

Embodiment 9 the method of any of embodiments 1 to 8, wherein the method further comprises:

and under the condition that a second preset condition is met, the second terminal stops sending the second information.

Embodiment 10 the method according to embodiment 9, wherein in a case that the first resource is used for the first terminal to perform the sidelink communication, the second preset condition includes one or more of:

the second terminal receives sixth information sent by an access network device or the first terminal, where the sixth information is used to instruct the second terminal to stop sending the third information, or the sixth information is used to instruct the second terminal to stop obtaining the first resource; or,

the second terminal determining that a direct communication connection between the second terminal and the first terminal has been disconnected; or,

the second terminal receives a first high-level indication, wherein the first high-level indication is used for indicating the second terminal to release the direct communication connection; or,

the second terminal receives a second high-level indication, wherein the second high-level indication is used for indicating the second terminal to stop carrying out the direct communication service; or,

and the second terminal receives a third high-level indication, wherein the third high-level indication is used for indicating the second terminal to stop directly discovering services.

Embodiment 11 the method according to embodiment 9, wherein in a case that the first resource is used for the first terminal to perform side chain discovery, the second preset condition includes one or more of the following:

the second terminal receives a third high-level instruction, wherein the third high-level instruction is used for instructing the second terminal to stop directly discovering services; or,

and the second terminal receives the discovery message sent by the first terminal.

Embodiment 12 the method of any of embodiments 1-11, wherein the method further comprises:

the second terminal sends fourth information to the first terminal, where the fourth information is used to indicate whether the first terminal or the second terminal is in a coverage area of a target cell, and the target cell is a cell where the second terminal resides or a serving cell of the second terminal.

Embodiment 13, the method according to any one of embodiments 1 to 12, wherein when the first resource is used for the first terminal to perform the sidelink communication, the method further includes:

the first terminal transmits and/or receives sidelink communications on the first resource.

Embodiment 14, the method according to any one of embodiments 1 to 12, wherein when the first resource is used for side-chain discovery for the first terminal, the method further includes:

the first terminal transmits and/or receives a sidelink discovery on the first resource.

Embodiment 15, a resource configuration method, wherein the method comprises:

a first terminal receives second information sent by a second terminal, wherein the second information is used for indicating first resources, and the first resources are used for performing side chain communication by the first terminal, or the first resources are used for performing side chain discovery by the first terminal;

and the first terminal determines the first resource according to the second information.

Embodiment 16 and the method according to embodiment 16, wherein the receiving, by the first terminal, the second information sent by the second terminal includes:

the first terminal receives second information sent by a second terminal on a third resource, wherein the third resource is a subset of resources pre-configured for the first terminal to receive the second information.

Embodiment 17, the method of embodiment 15 or 16, wherein the method further comprises:

and the first terminal sends fifth information to the second terminal, wherein the fifth information is used for indicating the second terminal to send the second information.

Embodiment 18, the method of any of embodiments 15 to 17, wherein the method further comprises:

and the first terminal sends sixth information to the second terminal, wherein the sixth information is used for indicating the second terminal to stop sending the second information.

Embodiment 19 the method of any of embodiments 15 to 18, wherein the method further comprises:

the first terminal receives fourth information sent by the second terminal, wherein the fourth information is used for indicating whether the first terminal or the second terminal is in a coverage area of a target cell, and the target cell is a resident cell of the second terminal or a service cell of the second terminal;

and the first terminal determines whether the first terminal is in the coverage area of the target cell or not according to the fourth information.

Embodiment 20, the method according to any of embodiments 15 to 19, wherein when the first resource is used for the first terminal to perform the sidelink communication, the method further includes:

Embodiment 21, the method according to any of embodiments 15 to 19, wherein when the first resource is used for side chain discovery for the first terminal, the method further includes:

Embodiment 22, a method for resource allocation, wherein the method comprises:

the method comprises the steps that access network equipment generates first information, wherein the first information comprises first resources, and the first resources are used for a first terminal to perform side chain communication, or the first resources are used for the first terminal to perform side chain discovery;

and the access network equipment sends the first information to the second terminal.

Embodiment 23 the method of embodiment 22, wherein the method further comprises:

and the access network equipment receives third information sent by the second terminal, wherein the third information is used for requesting the first resource.

Embodiment 24, the method of embodiment 22 or 23, wherein the first information is used to indicate a first resource, and comprises:

Embodiment 25, a communication device, comprising:

a communication unit, configured to receive first information sent by an access network device, where the first information is used to indicate a first resource, and the first resource is used for a first terminal to perform side-chain communication, or the first resource is used for the first terminal to perform side-chain discovery;

a processing unit for generating second information;

the communication unit is further configured to send second information to the first terminal when a first preset condition is met, where the second information is used to indicate the first resource.

Embodiment 26 the communication apparatus of embodiment 25, wherein the first information is used to indicate a first resource, and includes:

Embodiment 27, the communication apparatus according to embodiment 25 or 26, wherein the communication unit further sends third information to the access network device, and the third information is used for requesting the first resource;

embodiment 28, the communication apparatus according to any one of embodiments 25 to 27, wherein in a case that the first resource is used for a first terminal to perform side chain discovery, the first preset condition includes one or more of:

the second terminal executes a direct discovery process; or,

Embodiment 29, the communication apparatus according to any one of embodiments 25 to 27, wherein in a case where the first resource is used for a first terminal to perform a sidelink communication, the first preset condition includes one or more of:

the second terminal executes a direct discovery process; or,

Embodiment 30, the communications apparatus according to any one of embodiments 25 to 28, wherein the processing unit is further configured to perform a direct discovery procedure with the first terminal.

Embodiment 31, the communication apparatus according to embodiment 30, wherein in a case that the first resource is used for a first terminal to perform a sidelink communication, the first preset condition includes one or more of:

Embodiment 32 the communications apparatus according to any of embodiments 25 to 31, wherein the communications unit is specifically configured to send the second information to the first terminal on a third resource, and the third resource is a subset of resources that are preconfigured for the first terminal to receive the second information.

Embodiment 33 the communication device according to any one of embodiments 25 to 32, wherein the communication unit is further configured to stop transmitting the second information if a second preset condition is satisfied.

Embodiment 34 the communication apparatus according to embodiment 33, wherein in a case that the first resource is used for the first terminal to perform the sidelink communication, the second preset condition includes one or more of:

Embodiment 35, the communication apparatus according to embodiment 33, wherein in a case that the first resource is used for the first terminal to perform the side chain discovery, the second preset condition includes one or more of the following:

Embodiment 36 and the communication apparatus according to any of embodiments 25 to 35, wherein the communication unit is further configured to send fourth information to the first terminal, where the fourth information is used to indicate whether the first terminal or the second terminal is within a coverage of a target cell, and the target cell is a cell in which the second terminal resides or a serving cell of the second terminal.

Embodiment 37, the communication device according to any of embodiments 25 to 36, wherein when the first resource is used for a first terminal to perform a sidelink communication, the communication unit is further configured to transmit and/or receive the sidelink communication on the first resource.

Embodiment 38, the communications apparatus according to any one of embodiments 25 to 36, wherein when the first resource is used for a first terminal to perform a side chain discovery, the communications unit is further configured to transmit and/or receive a side chain discovery on the first resource.

Embodiment 39, a communication device, wherein the communication device comprises:

a communication unit, configured to receive second information sent by a second terminal, where the second information is used to indicate a first resource, and the first resource is used for performing a side chain communication by the first terminal, or the first resource is used for performing a side chain discovery by the first terminal;

and the processing unit is used for determining the first resource according to the second information.

Embodiment 40 and the communication apparatus according to embodiment 39, wherein the communication unit is specifically configured to receive second information sent by a second terminal on a third resource, and the third resource is a subset of resources preconfigured by the first terminal for receiving the second information.

Embodiment 41 or the communication apparatus according to embodiment 39 or 40, wherein the communication unit is further configured to send fifth information to the second terminal, where the fifth information is used to instruct the second terminal to send the second information.

Embodiment 42 the communications apparatus according to any one of embodiments 39 to 41, wherein the communications unit is further configured to transmit sixth information to the second terminal, where the sixth information is used to instruct the second terminal to stop transmitting the second information.

Embodiment 43 the communication apparatus according to any one of embodiments 39 to 42, wherein the communication unit is further configured to receive fourth information sent by the second terminal, where the fourth information is used to indicate whether the first terminal or the second terminal is within a coverage area of a target cell, and the target cell is a cell in which the second terminal resides or a serving cell of the second terminal. The processing unit is further configured to determine whether the first terminal is in a coverage area of a target cell according to the fourth information.

Embodiment 44, the communication device according to any one of embodiments 39 to 43, wherein when the first resource is used for a first terminal to perform a sidelink communication, the communication unit is further configured to transmit and/or receive the sidelink communication on the first resource.

Embodiment 45, the communication apparatus according to any one of embodiments 39 to 43, wherein when the first resource is used for a first terminal to perform a side chain discovery, the communication unit is further configured to transmit and/or receive a side chain discovery on the first resource.

Embodiment 46, a communication device, wherein the communication device comprises:

a processing unit, configured to generate first information, where the first information includes a first resource, and the first resource is used for a first terminal to perform side-chain communication, or the first resource is used for the first terminal to perform side-chain discovery;

and the communication unit is used for sending the first information to the second terminal.

Embodiment 47 of the communication device according to embodiment 46, wherein the communication unit is further configured to receive third information sent by the second terminal, and the third information is used to request the first resource.

Embodiment 48, the communication apparatus of embodiment 46 or 47, wherein the first information is used to indicate a first resource, and comprises:

Embodiment 49, a communication device, wherein the communication device comprises a processor configured to perform the processing operations of the method according to any of embodiments 1 to 24, and a communication interface configured to perform the communication operations of the method according to any of embodiments 1 to 24.

Embodiment 50, a computer readable storage medium, wherein the computer readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method of any of embodiments 1 to 24.

Embodiment 51, a computer program product, wherein the computer program product comprises computer instructions which, when run on a computer, cause the computer to perform the method of any of embodiments 1 to 24.

Embodiment 52, a chip, wherein the chip comprises a processing unit and a transceiver pin; the processing unit is configured to perform processing operations in the method according to any one of embodiments 1 to 24, and the transceiver pin is configured to perform communication operations in the method according to any one of embodiments 1 to 24.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and all changes and substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for resource allocation, the method comprising:

2. The method of claim 1, wherein the first information is used for indicating a first resource, and comprises:

3. The method according to claim 1 or 2, characterized in that the method further comprises:

and the second terminal sends third information to the access network equipment, wherein the third information is used for requesting the first resource.

4. The method according to any one of claims 1 to 3, wherein in the case that the first resource is used for the first terminal to perform side chain discovery, the first preset condition includes one or more of the following:

the second terminal executes a direct discovery process; or,

5. The method according to any of claims 1 to 3, wherein in the case that the first resource is used for the first terminal to perform the sidelink communication, the first preset condition includes one or more of the following:

the second terminal executes a direct discovery process; or,

6. The method according to any of claims 1 to 3, wherein before the second terminal receives the first information sent by the access network device, the method further comprises:

the second terminal and the first terminal execute a direct discovery process.

7. The method according to claim 6, wherein in case that the first resource is used for the first terminal to perform the sidelink communication, the first preset condition includes one or more of the following:

8. The method according to any of claims 1 to 7, wherein the second terminal sends second information to the first terminal, comprising:

9. The method according to any one of claims 1 to 8, further comprising:

10. The method according to claim 9, wherein in case that the first resource is used for the first terminal to perform the sidelink communication, the second preset condition includes one or more of the following:

11. The method according to claim 9, wherein in case that the first resource is used for the first terminal to perform side chain discovery, the second preset condition includes one or more of the following:

12. The method according to any one of claims 1 to 11, further comprising:

13. The method according to any of claims 1 to 12, wherein when the first resource is used for the first terminal to perform the sidelink communication or the sidelink discovery, the method further comprises:

14. A communication device, characterized in that it comprises means for carrying out the steps of the method according to any one of claims 1 to 13.

15. A computer readable storage medium storing computer instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 13.

16. A chip, characterized in that the chip comprises a processing unit and a transceiver pin; the processing unit is configured to perform processing operations in the method according to any one of claims 1 to 13, and the transceiver pin is configured to perform communication operations in the method according to any one of claims 1 to 13.