WO2022205444A1

WO2022205444A1 - Broadcast message sending method and apparatus, broadcast message receiving method and apparatus, device and storage medium

Info

Publication number: WO2022205444A1
Application number: PCT/CN2021/085371
Authority: WO
Inventors: 冷冰雪; 卢前溪; 杨皓睿
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2022-10-06
Also published as: CN116530200A

Abstract

The present application discloses a broadcast message sending method and apparatus, a broadcast message receiving method and apparatus, a device and a storage medium, relating to the field of wireless communications. The method comprises: during a process of sending a broadcast message to a remote terminal, which is in sidelink communication, indicating the broadcast message type of the broadcast message. A user equipment can indicate the message type of a broadcast message by sending the broadcast message to a remote terminal, and can distinguish between different types of broadcast messages.

Description

Broadcast message sending method, receiving method, apparatus, device and storage medium

technical field

The present application relates to the field of wireless communication, and in particular, to a method for sending a broadcast message, a method for receiving, an apparatus, a device, and a storage medium.

Background technique

In a wireless communication network, a relay terminal (User Equipment, UE) and a remote terminal can transmit messages through a sidelink (Sidelink), and the relay terminal is used to forward messages transmitted between the remote terminal and a network device.

Some messages in the wireless communication network need to be sent by the relay terminal to the remote terminal in the form of broadcast through the side link before the relay terminal and the remote terminal establish a connection with the PC5 interface, such as discovery messages and forwarded system messages. Wait. These messages are different from the messages transmitted after the connection of the PC5 interface is established, and these messages are not suitable for multiplexing with other messages for transmission on the same resource, so they need to be distinguished.

However, further discussion and research are needed to distinguish between different messages.

SUMMARY OF THE INVENTION

The present application provides a method for sending a broadcast message, a method for receiving, an apparatus, a device and a storage medium. The technical solution is as follows.

According to an aspect of the present application, a method for sending a broadcast message is provided, the method is performed by a relay terminal in sideline communication, and the method includes:

In the process of sending a broadcast message to a remote terminal in sideline communication, the broadcast message type of the broadcast message is indicated.

According to another aspect of the present application, a method for receiving a broadcast message is provided, the method is performed by a remote terminal in sideline communication, and the method includes:

in the process of receiving the broadcast message sent by the relay terminal in the sideline communication, determining the broadcast message type of the broadcast message;

A response operation corresponding to the broadcast message type is performed.

According to another aspect of the present application, an apparatus for sending a broadcast message is provided, the apparatus comprising:

The sending module is configured to indicate the broadcast message type of the broadcast message in the process of sending the broadcast message to the remote terminal in the sideline communication.

In an optional design, the sending module is used to:

A broadcast message is sent to the remote terminal in the sideline communication, where the broadcast message carries a dedicated layer 2 identifier, and the dedicated layer 2 identifier is used to identify the type of the broadcast message.

In an optional design, the dedicated layer 2 identifier includes at least one of the following:

a first layer two identifier, where the first layer two identifier is used to identify a discovery message in the broadcast message type;

A second layer two identifier, the second layer two identifier is used to identify the forwarded system message in the broadcast message type;

A third layer 2 identifier, where the third layer 2 identifier is used to identify a paging message in the broadcast message type;

The fourth layer 2 identifier, where the fourth layer 2 identifier is used to identify the direct connection communication request message in the broadcast message type.

In an optional design, the dedicated layer 2 identifier is configured by the network device;

or,

The dedicated layer 2 identifier is configured by the application server;

or,

The dedicated layer 2 identifier is agreed by the operator.

In an optional design, a first correspondence relationship is stored in the relay terminal, and the first correspondence relationship includes a correspondence relationship between the dedicated layer 2 identifier and the broadcast message type.

In an optional design, the first layer 2 identifier is not used to identify messages other than the discovery message in the broadcast message type;

The second layer 2 identifier is not used to identify messages other than the forwarded system messages in the broadcast message type;

The third layer 2 identifier is not used to identify messages other than the paging message in the broadcast message type;

The fourth layer 2 identifier is not used to identify messages other than the direct connection communication request message in the broadcast message type.

In an optional design, the sending module is used to:

A broadcast message is sent to the remote terminal in the sideline communication by using a dedicated resource pool, where the dedicated resource pool is a resource pool corresponding to the type of the broadcast message.

In an optional design, the dedicated resource pool includes at least one of the following:

a first resource pool, where the first resource pool is used to send the discovery message in the broadcast message type;

a second resource pool, where the second resource pool is used to send the forwarded system message in the broadcast message type;

a third resource pool, where the third resource pool is used to send paging messages in the broadcast message type;

a fourth resource pool, where the fourth resource pool is used to send the direct connection communication request message in the broadcast message type.

In an optional design, the dedicated resource pool is configured by a network device;

or,

the dedicated resource pool is preconfigured;

or,

The dedicated resource pool is stipulated by the communication protocol.

In an optional design, a second correspondence relationship is stored in the relay terminal, and the second correspondence relationship includes a correspondence relationship between the dedicated resource pool configuration and the broadcast message type.

In an optional design, the first resource pool is not used for sending messages other than the discovery message in the broadcast message type;

the second resource pool is not used for sending messages other than the forwarded system messages in the broadcast message type;

the third resource pool is not used for sending messages other than paging messages in the broadcast message type;

The fourth resource pool is not used for sending messages other than the direct connection communication request message in the broadcast message type.

According to another aspect of the present application, there is provided an apparatus for receiving a broadcast message, the apparatus comprising:

a receiving module, configured to determine the broadcast message type of the broadcast message in the process of receiving the broadcast message sent by the relay terminal in the sideline communication;

An execution module, configured to execute a response operation corresponding to the type of the broadcast message.

In an optional design, the receiving module is used to:

A broadcast message sent by a relay terminal in sideline communication is received, where the broadcast message carries a dedicated layer 2 identifier, and the dedicated layer 2 identifier is used to identify the type of the broadcast message.

or,

The dedicated layer 2 identifier is configured by the application server;

or,

The dedicated layer 2 identifier is agreed by the operator.

In an optional design, a third correspondence relationship is stored in the remote terminal, and the third correspondence relationship includes a correspondence relationship between the dedicated layer 2 identifier and the broadcast message type.

In an optional design, the receiving module is used to:

A broadcast message sent by the relay terminal in the sideline communication is received by using a dedicated resource pool, where the dedicated resource pool is a resource pool corresponding to the type of the broadcast message.

a first resource pool, where the first resource pool is used to receive a discovery message in the broadcast message type;

a second resource pool, where the second resource pool is used to receive the forwarded system messages in the broadcast message type;

a third resource pool, where the third resource pool is used to receive paging messages in the broadcast message type;

a fourth resource pool, where the fourth resource pool is used to receive a direct connection communication request message in the broadcast message type.

or,

the dedicated resource pool is preconfigured;

or,

The dedicated resource pool is stipulated by the communication protocol.

In an optional design, a fourth correspondence relationship is stored in the remote terminal, and the fourth correspondence relationship includes a correspondence relationship between the dedicated resource pool and the broadcast message type.

In an optional design, the first resource pool is not used to receive messages other than the discovery message in the broadcast message type;

the second resource pool is not used for receiving messages other than the forwarded system messages in the broadcast message type;

the third resource pool is not used for receiving messages other than paging messages in the broadcast message type;

The fourth resource pool is not used for receiving messages other than the direct connection communication request message in the broadcast message type.

In an optional design, the execution module is used to:

In response to the broadcast message type being a discovery message, a discovery response operation is performed, and whether to access the relay terminal is determined.

In an optional design, the execution module is used to:

In response to the broadcast message type being a forwarding system message, determining whether to access the relay terminal;

In response to determining that the relay terminal is accessed, an access network operation is performed according to the configuration information in the broadcast message.

According to another aspect of the present application, a terminal is provided, the terminal comprising: a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the The processor is configured to load and execute the executable instructions to implement the method for sending a broadcast message or the method for receiving a broadcast message as described in the above aspects.

According to another aspect of the present application, there is provided a computer-readable storage medium having executable instructions stored in the readable storage medium, the executable instructions being loaded and executed by the processor to implement the above aspects The method for sending a broadcast message or the method for receiving a broadcast message described above.

According to another aspect of the present application, there is provided a computer program product having executable instructions stored in the readable storage medium, the executable instructions being loaded and executed by the processor to implement the above aspects The method of sending the broadcast message or the method of receiving the broadcast message.

According to another aspect of the present application, a chip is provided, and the chip is configured to implement the method for sending a broadcast message or the method for receiving a broadcast message as described in the above aspects.

The technical solution provided by this application at least includes the following beneficial effects:

By sending the broadcast message to the remote terminal by the relay terminal, the message type of the broadcast message can be indicated, and different types of broadcast messages can be distinguished.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a network architecture diagram of a communication system provided by an exemplary embodiment of the present application;

2 is a flowchart of a method for sending a broadcast message provided by an exemplary embodiment of the present application;

3 is a flowchart of a method for receiving a broadcast message provided by an exemplary embodiment of the present application;

4 is a flowchart of a method for receiving a broadcast message provided by another exemplary embodiment of the present application;

5 is a flowchart of a method for receiving a broadcast message provided by another exemplary embodiment of the present application;

6 is a block diagram of an apparatus for sending a broadcast message provided by an exemplary embodiment of the present application;

7 is a block diagram of an apparatus for receiving a broadcast message provided by an exemplary embodiment of the present application;

FIG. 8 is a schematic structural diagram of a terminal provided by an exemplary embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

In Long Term Evolution (LTE), the communication between terminals is based on Device-to-Device (D2D) communication technology, and the communication between terminals can also be based on vehicle It is implemented with wireless communication technology (Vehicle to X, V2X). Both D2D and V2X are sidelink transmission technologies, which are different from the way in which communication data is received or sent by the base station in the traditional cellular system. In practical scenarios, for example, in a V2X-based Internet of Vehicles system, different in-vehicle terminals can communicate directly, so the link for transmitting messages has higher spectral efficiency and lower transmission delay. At present, in the 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP), two transmission modes are defined for communication between terminals: mode A and mode B, respectively.

In mode A, the transmission resources of the terminal are allocated by the base station, and the terminal transmits data on the sidelink according to the resources allocated by the base station. The base station can allocate resources for a single transmission to the terminal, and can also allocate resources for semi-static transmission to the terminal.

In mode B, the terminal may select a resource in the resource pool for data transmission.

In Rel (Release) 12 and 13 of 3GPP, a Proximity based Service (Proximity based Service, ProSe) scenario is mainly studied, which is mainly aimed at public safety services. In ProSe, the network device configures the location of the resource pool in the time domain, for example, the resource pool is not continuous in the time domain, so that the terminal sends or receives data discontinuously on the sidelink, thereby achieving the effect of power saving.

In 3GPP's Rel-14/15, V2X is studied for the scenario of vehicle-to-vehicle communication, and it is mainly oriented to the relatively high-speed moving vehicle-to-vehicle and vehicle-to-person communication services. Since the in-vehicle system has a continuous power supply, power efficiency is not the main problem, but the delay of data transmission is the main problem. Therefore, the terminal equipment is required to perform continuous transmission and reception in system design.

In Rel-14 of 3GPP, the further enhancement of D2D (Further Enhancements to LTE Device to Device, FeD2D) is mainly studied, so as to meet the scenario of wearable devices accessing the network through mobile phones, which is mainly oriented to low mobile speed and low power. access scene.

On the basis of V2X in LTE, the V2X in the global 5G standard (5G New Radio, 5GNR) is no longer limited to broadcast scenarios, but is further extended to unicast and multicast scenarios. Similar to V2X in LTE, V2X in 5GNR also has the above two modes of AB resource authorization. Further, the terminal may be in a mixed mode, that is, the mode A can be used to obtain resources, and the mode B can be used to obtain resources at the same time. The resource acquisition is indicated by means of sidelink grants, that is, the sidelink grants indicate the time-frequency positions of the corresponding Physical Sidelink Control Channel (PSCCH) and PSSCH resources. Unlike V2X in LTE, in addition to the retransmission of Hybrid Automatic Repeat reQuest (HARQ) initiated by the terminal without feedback, V2X in 5GNR introduces HARQ retransmission based on feedback, which is not limited to unicast communication , including multicast communication.

In ProSe of Rel-13, 3GPP introduced the UE-to-network relay function based on layer 3 relay, that is, the remote terminal accesses network equipment (such as base station) through the relay terminal, and the relay terminal undertakes the network interconnection protocol The (Internet Protocol, IP) layer relay function transmits data between the remote terminal and the network device, and the remote terminal and the relay terminal are connected through a side link. During the process of the remote terminal accessing the network device, the relay terminal reports the identity document (ID) and IP information of the remote terminal to the network device. According to the report message, the network device learns the association relationship between the relay terminal and the remote terminal, so as to perform corresponding bearer or session management and configuration, so that the remote terminal is connected to the network through the relay terminal.

In FeD2D of Rel-15, 3GPP studied the UE-to-network relay function based on layer 2 relay, that is, the remote terminal accesses the network through the relay terminal, and the relay terminal undertakes the adaptation layer (radio link layer control). Above the protocol layer and below the packet data convergence protocol layer) the relay function transmits data between the remote terminal and the network device, and the remote terminal and the relay terminal are connected through a side link.

The methods provided in the embodiments of the present application can be used in remote terminals and relay terminals that communicate through sidelinks.

FIG. 1 shows a schematic diagram of a system architecture provided by an embodiment of the present application. The system architecture may include: a remote terminal 10 , a relay terminal 20 and a network device 30 .

The number of remote terminals 10 is usually multiple, and one or more remote terminals 10 may be distributed in a cell managed by each network device 30 . The remote terminal 10 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to the wireless modem, as well as various forms of user equipment, mobile stations (Mobile Station, MS )and many more. For the convenience of description, the devices mentioned above are collectively referred to as remote terminals.

The number of relay terminals 20 is usually multiple, and one or more relay terminals 20 may be distributed in a cell managed by each network device 30 . The relay terminal 20 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to the wireless modem, as well as various forms of user equipment, mobile stations (Mobile Station, MS )and many more. For the convenience of description, the devices mentioned above are collectively referred to as relay terminals.

The network device 30 is a device that provides wireless communication functions for the remote terminal 10 and the relay terminal 20 . The network device 30 may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, the name of the network device 30 may be different, for example, in a 5G NR system, it is called a 5G base station (5G Node B, gNodeB/gNB).

A connection is established between the remote terminal 10 and the relay terminal 20 through a side link, and can communicate with each other through a direct communication interface (such as a PC5 interface), and the relay terminal 20 can broadcast network equipment to the remote terminal through the side link. news. The communication data is directly transmitted between the remote terminal 10 and the relay terminal 20 through the side link, which is different from the traditional cellular system in which the communication data is received or sent through the network device. The transmission process has the characteristics of short delay and low overhead. , which is suitable for communication between two terminals that are geographically close (such as a vehicle-mounted device and other peripheral devices that are geographically close). The network device 30 and the relay terminal 20 communicate with each other through some air technology, such as a Uu interface.

FIG. 2 shows a flowchart of a method for sending a broadcast message provided by an embodiment of the present application. FIG. 2 illustrates that the method is applied to the relay terminal in the communication system shown in FIG. 1 as an example. The method includes:

Step 202: In the process of sending the broadcast message to the remote terminal in the sideline communication, the broadcast message type of the broadcast message is indicated.

The sidelink communication refers to communication via the sidelink. The relay terminal and the remote terminal establish a connection relationship through the side link, and the relay terminal and the remote terminal can communicate directly through the side link. The relay terminal can communicate with a network device (such as a base station), and the remote terminal forwards the message of the network device through the relay terminal to communicate with the network device. Before the relay terminal and the remote terminal establish a connection with the PC5 interface, the relay terminal will send a broadcast message to the remote terminal in the form of broadcast. The remote terminal can determine whether to access the relay terminal according to the broadcast message, and perform a corresponding response operation according to the broadcast message. The message types of the broadcast message include discovery messages, forwarded system messages, paging messages, Direct Communication Request (DCR) messages, and other messages. After receiving the DCR message, the remote terminal will reply a Direct Communication Accept (DCA) message if it agrees to establish a unicast co-channel. Optionally, the relay terminal can indicate the broadcast message type of the broadcast message through the identifier carried in the broadcast message or the resource pool used for sending the broadcast message.

To sum up, in the method provided in this embodiment, the relay terminal can indicate the message type of the broadcast message by sending the broadcast message to the remote terminal, and can realize the distinction of different types of broadcast messages.

FIG. 3 shows a flowchart of a method for receiving a broadcast message provided by an embodiment of the present application. FIG. 5 illustrates that the method is applied to the remote terminal in the communication system shown in FIG. 1 as an example. The method includes:

Step 302: In the process of receiving the broadcast message sent by the relay terminal in the sideline communication, determine the broadcast message type of the broadcast message.

The relay terminal and the remote terminal establish a connection relationship through the side link, and the relay terminal and the remote terminal can communicate directly through the side link. The relay terminal can communicate with a network device (such as a base station), and the remote terminal forwards messages through the relay terminal to communicate with the network device. Optionally, in the process of receiving the broadcast message, the remote terminal can determine the message type of the broadcast message according to the identifier carried in the broadcast message or the resource pool used for sending the broadcast message. The message types of the broadcast message include discovery messages, forwarded system messages, paging messages, direct connection communication request messages, and other messages.

Step 304: Execute a response operation corresponding to the broadcast message type.

After receiving broadcast messages of different broadcast message types, the remote terminal will perform corresponding response operations according to the broadcast message types. For example, when receiving the discovery message, the remote terminal will perform a discovery response process and decide whether to access the relay terminal. When receiving the forwarded system message, the remote terminal will select whether to access the relay terminal, and further execute the process of accessing the network according to the configuration in the system message.

To sum up, with the method provided in this embodiment, during the process of receiving the broadcast message, the remote terminal can determine the broadcast message type of the broadcast message, so that different types of broadcast messages can be distinguished. Further, corresponding response operations can be performed according to broadcast messages of different broadcast message types.

Optionally, the relay terminal can indicate the broadcast message type of the broadcast message through a dedicated layer 2 identifier or a dedicated resource pool carried in the broadcast message.

1. The broadcast message type of the broadcast message is indicated by the dedicated layer 2 identifier carried in the broadcast message

FIG. 4 shows a flowchart of a method for receiving a broadcast message provided by an embodiment of the present application. FIG. 4 illustrates that the method is applied to the communication system shown in FIG. 1 . The method includes:

Step 402: The relay terminal sends a broadcast message to the remote terminal in the sideline communication, where the broadcast message carries a dedicated layer 2 identifier.

The dedicated layer 2 identifier is used to identify the broadcast message type. The message types of the broadcast message include discovery messages, forwarded system messages, paging messages, direct connection communication request messages, and other messages. When the relay terminal broadcasts the broadcast message carrying the dedicated layer 2 identifier, all surrounding remote terminals can receive it. The dedicated layer 2 identifier is acquired by the ProSe layer inside the relay terminal, and then sent to the AS layer inside the relay terminal. The AS layer is used to implement the relevant functions of the wireless communication interface corresponding to the relay terminal, such as: radio bearer management (including radio bearer allocation, establishment, modification and release), radio channel processing (including channel coding and modulation), encryption (for The encryption of the AS layer itself) and mobility management (such as cell selection, cell handover and cell reselection, etc.). For the AS layer of the terminal, when the terminal needs to send a discovery message, a forwarded system message, a paging message, and a direct connection communication request message, it needs to send a broadcast message carrying a corresponding dedicated layer 2 identifier. A first correspondence relationship is stored in the relay terminal, and the first correspondence relationship includes a correspondence relationship between a dedicated layer 2 identifier and a broadcast message type.

Optionally, the dedicated layer 2 identifier includes at least one of the following:

The first layer two identification, the first layer two identification is used to identify the discovery message in the broadcast message type;

The second layer two identification, the second layer two identification is used to identify the forwarded system message in the broadcast message type;

The third layer two identification, the third layer two identification is used to identify the paging message in the broadcast message type;

· The fourth layer two identifier, the fourth layer two identifier is used to identify the direct connection communication request message in the broadcast message type.

Wherein, the first layer two logo, the second layer two logo, the third layer two logo and the fourth layer two logo are different from each other. For other broadcast messages that need to be classified, they can also be identified by other different dedicated layer 2 identifiers. For the ProSe layer, in the case where different types of broadcast messages need to be distinguished, it is also necessary to ensure that the first layer two identifier is not used to identify messages other than the discovery message in the broadcast message type, and the second layer two identifier is not used to identify messages other than broadcast messages. Message types other than forwarded system messages, and Layer 2 identifiers are not used to identify messages other than paging messages in the broadcast message type, and Layer 2 identifiers are not used to identify messages other than direct messages in the broadcast message type. messages other than the communication request message.

Optionally, the dedicated layer-2 identifier is configured by the network device, or the dedicated layer-2 identifier is configured by the application server, or the dedicated layer-2 identifier is agreed by the operator. The network device can be a core network device. The application server is a server that provides application services. By defining a dedicated Layer 2 ID in the USIM card, the operator can configure the dedicated Layer 2 ID for the relay terminal and the remote terminal installed with the USIM card. Moreover, the dedicated layer 2 identifier configured by the network device corresponds to the ProSe application.

Step 404: During the process of receiving the broadcast message sent by the relay terminal in the sideline communication, the remote terminal determines the broadcast message type of the broadcast message.

The remote terminal can determine the broadcast message type of the broadcast message by receiving the broadcast message carrying the dedicated layer 2 identifier sent by the relay terminal in the sideline communication. A third correspondence relationship is stored in the remote terminal, and the third correspondence relationship includes the correspondence relationship between the dedicated layer 2 identifier and the broadcast message type, so that the remote terminal can distinguish the broadcast message type according to the dedicated layer 2 identifier. For the AS layer of the remote terminal, it is necessary to monitor the broadcast message carrying the dedicated layer 2 identifier, and then perform corresponding operations according to the type of the broadcast message.

Step 406: The remote terminal performs a response operation corresponding to the broadcast message type.

In response to the broadcast message type being a discovery message, the remote terminal will perform a discovery response operation and determine whether to access the relay terminal. In response to a system message whose broadcast message type is forwarding, the remote terminal determines whether to access the relay terminal, and then in response to determining to access the relay terminal, the remote terminal performs an access network operation according to the configuration information in the broadcast message.

In addition, the broadcast message type is identified by a dedicated layer 2 identifier, which provides a simple and convenient way of indicating the broadcast message type. The broadcast message types are identified by different dedicated layer 2 identifiers, and each dedicated layer 2 identifier only identifies one type of broadcast message, ensuring the uniqueness of the dedicated layer 2 identifiers. The dedicated layer 2 identifiers are configured by different objects, which can realize flexible configuration of the dedicated layer 2 identifiers.

2. Indicate the broadcast message type of the broadcast message through the dedicated resource pool

FIG. 5 is a flowchart of a method for receiving a broadcast message provided by an embodiment of the present application. FIG. 5 illustrates that the method is applied to the communication system shown in FIG. 1 . The method includes:

Step 502: The relay terminal sends a broadcast message to the remote terminal in the sideline communication using a dedicated resource pool, where the dedicated resource pool is a resource pool corresponding to the type of the broadcast message.

The dedicated resource pool is a resource pool corresponding to the broadcast message type, and the dedicated resource pool includes time domain information, frequency domain information, and the like. The message types of the broadcast message include discovery messages, forwarded system messages, paging messages, direct connection communication request messages, and other messages. A second correspondence relationship is stored in the relay terminal, and the second correspondence relationship includes the correspondence relationship between the dedicated resource pool and the broadcast message type.

Optionally, the dedicated resource pool includes at least one of the following:

a first resource pool, where the first resource pool is used to send discovery messages in the broadcast message type;

The second resource pool, the second resource pool is used to send the forwarded system message in the broadcast message type;

A third resource pool, the third resource pool is used to send paging messages in the broadcast message type;

A fourth resource pool, the fourth resource pool is used to send a direct connection communication request message in the broadcast message type.

The first resource pool, the second resource pool, the third resource pool and the fourth resource pool are different from each other. For other broadcast messages that need to be classified, the broadcast messages can also be sent through other different dedicated resource pools.

Optionally, the dedicated resource pool is configured by the network device, or, the dedicated resource pool is pre-configured, or, the dedicated resource pool is stipulated by the communication protocol. The network device can be a core network device.

Moreover, the first resource pool is not used for sending messages other than the discovery message in the broadcast message type, the second resource pool is not used for sending messages other than the forwarded system message in the broadcast message type, and the third resource pool is not used for sending messages except for For messages other than the paging message in the broadcast message type, the fourth resource pool is not used for sending messages other than the direct connection communication request message in the broadcast message type.

Step 504: During the process of receiving the broadcast message sent by the relay terminal in the sideline communication, the remote terminal determines the broadcast message type of the broadcast message.

The remote terminal uses the dedicated resource pool to receive the broadcast message sent by the relay terminal in the sideline communication, and can determine the message type of the broadcast message. A fourth correspondence is stored in the remote terminal, and the fourth correspondence includes the correspondence between the dedicated resource pool and the broadcast message type, so that the remote terminal can distinguish the broadcast message type according to the dedicated resource pool used for receiving the broadcast message. The remote terminal needs to monitor all messages in the dedicated resource pool, and then perform corresponding operations according to the received messages.

Step 506: The remote terminal performs a response operation corresponding to the broadcast message type.

It should be noted that the solutions provided by the embodiments of this application can support applications when the remote terminal is in the IDLE (idle), INACTIVE (inactive) or CONNECTED (connected) state, and the relay terminal is in the IDLE, INACTIVE or CONNECTED state . At the same moment, the remote terminal and the relay terminal are in the same or different states.

In addition, sending or receiving broadcast messages through a dedicated resource pool provides a simple and convenient way of indicating or determining the type of broadcast messages. Broadcast messages are sent or received through different dedicated resource pools, and each dedicated resource pool only sends or receives one type of broadcast message, ensuring the uniqueness of the dedicated resource pool. Dedicated resource pools are configured by different objects, enabling flexible configuration of dedicated resource pools.

The above-mentioned embodiments can be implemented independently or in free combination.

FIG. 6 shows a block diagram of an apparatus for sending a broadcast message provided by an embodiment of the present application. As shown in Figure 6, the device 60 includes:

The sending module 601 is configured to indicate the broadcast message type of the broadcast message in the process of sending the broadcast message to the remote terminal in the sideline communication.

In an optional design, the sending module 601 is used to:

A broadcast message is sent to the remote terminal in the sideline communication. The broadcast message carries a dedicated layer 2 identifier, and the dedicated layer 2 identifier is used to identify the type of the broadcast message.

In an optional design, the dedicated layer 2 identification includes at least one of the following:

The first layer two identifier, the first layer two identifier is used to identify the discovery message in the broadcast message type;

The second layer two identifier, the second layer two identifier is used to identify the forwarded system message in the broadcast message type;

The third layer two identifier, the third layer two identifier is used to identify the paging message in the broadcast message type;

The fourth layer two identifier is used to identify the direct connection communication request message in the broadcast message type.

In an optional design, the dedicated Layer 2 identity is configured by the network device;

or,

The dedicated layer 2 identifier is configured by the application server;

or,

The dedicated layer 2 identifier is agreed by the operator.

In an optional design, a first correspondence relationship is stored in the relay terminal, and the first correspondence relationship includes a correspondence relationship between a dedicated layer 2 identifier and a broadcast message type.

In an optional design, the first layer two identification is not used to identify messages other than the discovery message in the broadcast message type;

Layer 2 identifiers are not used to identify messages other than the forwarded system messages in the broadcast message type;

Layer 2 identifiers are not used to identify messages other than paging messages in the broadcast message type;

In an optional design, the sending module 601 is used to:

A broadcast message is sent to a remote terminal in sideline communication by using a dedicated resource pool, which is a resource pool corresponding to the type of the broadcast message.

a first resource pool, where the first resource pool is used to send a discovery message in a broadcast message type;

The fourth resource pool is used for sending the direct connection communication request message in the broadcast message type.

In an alternative design, the dedicated resource pool is configured by the network device;

or,

Dedicated resource pools are pre-configured;

or,

The dedicated resource pool is agreed upon by the communication protocol.

In an optional design, a second correspondence relationship is stored in the relay terminal, and the second correspondence relationship includes a correspondence relationship between a dedicated resource pool configuration and a broadcast message type.

FIG. 7 shows a block diagram of an apparatus for receiving a broadcast message provided by an embodiment of the present application. As shown in Figure 7, the device 70 includes:

A receiving module 701, configured to determine the broadcast message type of the broadcast message in the process of receiving the broadcast message sent by the relay terminal in the sideline communication;

The execution module 702 is configured to execute a response operation corresponding to the broadcast message type.

In an optional design, the receiving module 701 is used to:

The broadcast message sent by the relay terminal in the sideline communication is received. The broadcast message carries a dedicated layer 2 identifier, and the dedicated layer 2 identifier is used to identify the type of the broadcast message.

or,

The dedicated layer 2 identifier is configured by the application server;

or,

The dedicated layer 2 identifier is agreed by the operator.

In an optional design, a third correspondence relationship is stored in the remote terminal, and the third correspondence relationship includes a correspondence relationship between a dedicated layer 2 identifier and a broadcast message type.

In an optional design, the receiving module 701 is used to:

A broadcast message sent by a relay terminal in sideline communication is received by using a dedicated resource pool, where the dedicated resource pool is a resource pool corresponding to the type of the broadcast message.

a first resource pool, where the first resource pool is used to receive a discovery message in a broadcast message type;

The second resource pool, the second resource pool is used to receive the forwarded system message in the broadcast message type;

The fourth resource pool is used for receiving the direct connection communication request message in the broadcast message type.

or,

Dedicated resource pools are pre-configured;

or,

The dedicated resource pool is agreed upon by the communication protocol.

The second resource pool is not used to receive messages other than the forwarded system messages in the broadcast message type;

In an optional design, module 702 is executed to:

In response to the broadcast message type being the forwarding system message, determine whether to access the relay terminal;

It should be noted that, when the device provided in the above embodiment realizes its functions, only the division of the above functional modules is used as an example for illustration. In practical applications, the above functions can be allocated to different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.

Regarding the apparatus in the above-mentioned embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be described in detail here.

FIG. 8 shows a schematic structural diagram of a terminal provided by an exemplary embodiment of the present application. The terminal 80 includes: a processor 801 , a receiver 802 , a transmitter 803 , a memory 804 , and a bus 805 .

The processor 801 includes one or more processing cores, and the processor 801 executes various functional applications and information processing by running software programs and modules.

The receiver 802 and the transmitter 803 may be implemented as a communication component, which may be a communication chip.

The memory 804 is connected to the processor 801 through the bus 805 .

The memory 804 may be configured to store at least one instruction, and the processor 801 may be configured to execute the at least one instruction to implement the various steps in the above method embodiments.

Additionally, memory 804 may be implemented by any type or combination of volatile or non-volatile storage devices including, but not limited to: magnetic or optical disks, electrically erasable programmable Read Only Memory (Erasable Programmable Read Only Memory, EEPROM), Erasable Programmable Read Only Memory (EPROM), Static Random Access Memory (SRAM), Read Only Memory (Read -Only Memory, ROM), magnetic memory, flash memory, Programmable Read-Only Memory (PROM).

In an exemplary embodiment, a computer-readable storage medium is also provided, wherein the computer-readable storage medium stores at least one instruction, at least one piece of program, code set or instruction set, the at least one instruction, the At least one section of program, the code set or the instruction set is loaded and executed by the processor to implement the method for sending a broadcast message performed by a relay terminal or the receiving method for a broadcast message performed by a remote terminal provided by each of the above method embodiments method.

An embodiment of the present application further provides a chip, where the chip includes a programmable logic circuit and/or program instructions, when the chip runs on a terminal, it is used to implement the above-mentioned sending of broadcast messages performed by the relay terminal A method or a method of receiving a broadcast message performed by a remote terminal.

The present application also provides a computer program product that, when the computer program product runs on the terminal device, enables the relay terminal to execute the above method for sending broadcast messages, or the remote terminal to execute the above method for receiving broadcast messages.

Those skilled in the art should realize that, in one or more of the above examples, the functions described in the embodiments of the present application may be implemented by hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

The above are only exemplary embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims

A method for sending a broadcast message, characterized in that the method is performed by a relay terminal in sideline communication, and the method includes:

In the process of sending a broadcast message to a remote terminal in sideline communication, the broadcast message type of the broadcast message is indicated.
The method according to claim 1, wherein, in the process of sending a broadcast message to a remote terminal in sideline communication, indicating the broadcast message type of the broadcast message comprises:

A broadcast message is sent to the remote terminal in the sideline communication, where the broadcast message carries a dedicated layer 2 identifier, and the dedicated layer 2 identifier is used to identify the type of the broadcast message.
The method according to claim 2, wherein the dedicated layer 2 identifier comprises at least one of the following:

a first layer two identifier, where the first layer two identifier is used to identify a discovery message in the broadcast message type;

A second layer two identifier, the second layer two identifier is used to identify the forwarded system message in the broadcast message type;

A third layer 2 identifier, where the third layer 2 identifier is used to identify a paging message in the broadcast message type;

The fourth layer 2 identifier, where the fourth layer 2 identifier is used to identify the direct connection communication request message in the broadcast message type.
The method according to claim 2 or 3, characterized in that,

The dedicated layer 2 identifier is configured by the network device;

or,

The dedicated layer 2 identifier is configured by the application server;

or,

The dedicated layer 2 identifier is agreed by the operator.
The method according to claim 2 or 3, characterized in that,

A first correspondence relationship is stored in the relay terminal, and the first correspondence relationship includes a correspondence relationship between the dedicated layer 2 identifier and the broadcast message type.
The method of claim 3, wherein:

The first layer 2 identifier is not used to identify messages other than the discovery message in the broadcast message type;

The second layer 2 identifier is not used to identify messages other than the forwarded system messages in the broadcast message type;

The third layer 2 identifier is not used to identify messages other than the paging message in the broadcast message type;

The fourth layer 2 identifier is not used to identify messages other than the direct connection communication request message in the broadcast message type.
The method according to claim 1, wherein, in the process of sending a broadcast message to a remote terminal in sideline communication, indicating the broadcast message type of the broadcast message comprises:

A broadcast message is sent to the remote terminal in the sideline communication by using a dedicated resource pool, where the dedicated resource pool is a resource pool corresponding to the type of the broadcast message.
The method according to claim 7, wherein the dedicated resource pool comprises at least one of the following:

a first resource pool, where the first resource pool is used to send the discovery message in the broadcast message type;

a second resource pool, where the second resource pool is used to send the forwarded system message in the broadcast message type;

a third resource pool, where the third resource pool is used to send paging messages in the broadcast message type;

a fourth resource pool, where the fourth resource pool is used to send the direct connection communication request message in the broadcast message type.
The method according to claim 7 or 8, wherein,

The dedicated resource pool is configured by a network device;

or,

the dedicated resource pool is preconfigured;

or,

The dedicated resource pool is stipulated by the communication protocol.
The method according to claim 7 or 8, wherein,

A second correspondence relationship is stored in the relay terminal, and the second correspondence relationship includes a correspondence relationship between the dedicated resource pool and the broadcast message type.
The method of claim 8, wherein:

the first resource pool is not used for sending messages other than the discovery message in the broadcast message type;

the second resource pool is not used for sending messages other than the forwarded system messages in the broadcast message type;

the third resource pool is not used for sending messages other than paging messages in the broadcast message type;

The fourth resource pool is not used for sending messages other than the direct connection communication request message in the broadcast message type.
A method for receiving broadcast messages, characterized in that the method is performed by a remote terminal in sideline communication, and the method includes:

in the process of receiving the broadcast message sent by the relay terminal in the sideline communication, determining the broadcast message type of the broadcast message;

A response operation corresponding to the broadcast message type is performed.
The method according to claim 12, wherein, in the process of receiving the broadcast message sent by the relay terminal in the sideline communication, determining the broadcast message type of the broadcast message comprises:

A broadcast message sent by a relay terminal in sideline communication is received, where the broadcast message carries a dedicated layer 2 identifier, and the dedicated layer 2 identifier is used to identify the type of the broadcast message.
The method according to claim 13, wherein the dedicated layer 2 identifier comprises at least one of the following:

a first layer two identifier, where the first layer two identifier is used to identify a discovery message in the broadcast message type;

A second layer two identifier, the second layer two identifier is used to identify the forwarded system message in the broadcast message type;

A third layer 2 identifier, where the third layer 2 identifier is used to identify a paging message in the broadcast message type;

The fourth layer 2 identifier, where the fourth layer 2 identifier is used to identify the direct connection communication request message in the broadcast message type.
The method according to claim 13 or 14, wherein,

The dedicated layer 2 identifier is configured by the network device;

or,

The dedicated layer 2 identifier is configured by the application server;

or,

The dedicated layer 2 identifier is agreed by the operator.
The method according to claim 13 or 14, wherein,

A third correspondence relationship is stored in the remote terminal, and the third correspondence relationship includes a correspondence relationship between the dedicated layer 2 identifier and the broadcast message type.
The method of claim 14, wherein:

The first layer 2 identifier is not used to identify messages other than the discovery message in the broadcast message type;

The second layer 2 identifier is not used to identify messages other than the forwarded system messages in the broadcast message type;

The third layer 2 identifier is not used to identify messages other than the paging message in the broadcast message type;

The fourth layer 2 identifier is not used to identify messages other than the direct connection communication request message in the broadcast message type.
The method according to claim 12, wherein, in the process of receiving the broadcast message sent by the relay terminal in the sideline communication, determining the broadcast message type of the broadcast message comprises:

A broadcast message sent by the relay terminal in the sideline communication is received by using a dedicated resource pool, where the dedicated resource pool is a resource pool corresponding to the type of the broadcast message.
The method according to claim 18, wherein the dedicated resource pool comprises at least one of the following:

a first resource pool, where the first resource pool is used to receive a discovery message in the broadcast message type;

a second resource pool, where the second resource pool is used to receive the forwarded system messages in the broadcast message type;

a third resource pool, where the third resource pool is used to receive paging messages in the broadcast message type;

a fourth resource pool, where the fourth resource pool is used to receive a direct connection communication request message in the broadcast message type.
The method according to claim 18 or 19, wherein,

The dedicated resource pool is configured by a network device;

or,

the dedicated resource pool is preconfigured;

or,

The dedicated resource pool is stipulated by the communication protocol.
The method according to claim 18 or 19, wherein,

A fourth correspondence is stored in the remote terminal, and the fourth correspondence includes a correspondence between the dedicated resource pool and the broadcast message type.
The method of claim 19, wherein:

the first resource pool is not used to receive messages other than the discovery message in the broadcast message type;

the second resource pool is not used for receiving messages other than the forwarded system messages in the broadcast message type;

the third resource pool is not used for receiving messages other than paging messages in the broadcast message type;

The fourth resource pool is not used for receiving messages other than the direct connection communication request message in the broadcast message type.
The method according to claim 12, wherein the performing a response operation corresponding to the broadcast message type comprises:

In response to the broadcast message type being a discovery message, a discovery response operation is performed, and whether to access the relay terminal is determined.
The method according to claim 12, wherein the performing a response operation corresponding to the broadcast message type comprises:

In response to the broadcast message type being a forwarding system message, determining whether to access the relay terminal;

In response to determining that the relay terminal is accessed, an access network operation is performed according to the configuration information in the broadcast message.
An apparatus for sending a broadcast message, characterized in that the apparatus comprises:

The sending module is configured to indicate the broadcast message type of the broadcast message in the process of sending the broadcast message to the remote terminal in the sideline communication.
A device for receiving broadcast messages, characterized in that the device comprises:

a receiving module, configured to determine the broadcast message type of the broadcast message in the process of receiving the broadcast message sent by the relay terminal in the sideline communication;

An execution module, configured to execute a response operation corresponding to the type of the broadcast message.
A terminal, characterized in that the terminal comprises:

processor;

a transceiver connected to the processor;

memory for storing executable instructions for the processor;

Wherein, the processor is configured to load and execute the executable instructions to implement the method for sending a broadcast message according to any one of claims 1 to 11 or the broadcast message according to any one of claims 12 to 24 the receiving method.
A computer-readable storage medium, wherein executable instructions are stored in the readable storage medium, and the executable instructions are loaded and executed by the processor to implement any one of claims 1 to 11. The method for sending a broadcast message described above or the method for receiving a broadcast message described in any one of claims 12 to 24.