WO2020199195A1

WO2020199195A1 - Data processing method, relay device, and network device

Info

Publication number: WO2020199195A1
Application number: PCT/CN2019/081514
Authority: WO
Inventors: 李晨琬; 李振宇; 王静; 吴毅凌
Original assignee: 华为技术有限公司
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2020-10-08
Also published as: CN113632533B; CN113632533A

Abstract

Disclosed in embodiments of the present application is a data processing method, comprising: a relay device receives a first message sent by a network device, the first message comprising at least one access reason; the relay device rejects, according to the first message, connection of a terminal device having an access reason belonging to the at least one access reason. The invention can solve the problem of overload of a relay device by means of overload control of an access network device; compared with overload control performed by the relay device itself, the access network device can perform centralized control of the relay device, thereby achieving load balancing.

Description

Data processing method, relay equipment and network equipment

Technical field

This application relates to the field of communications, and in particular to a data processing method, relay equipment and network equipment.

Background technique

In a wireless communication system, a terminal device needs to establish a connection with a network device. This process is usually called a random access (RA) process. Through random access, the terminal device can establish uplink synchronization with the network and obtain a unique cell-Radio network temporary identifier (C-RNTI). The ultimate goal of random access is to establish synchronization. Only when the uplink synchronization is achieved, the terminal equipment can perform uplink transmission.

In a scenario where buildings or other obstacles are blocking, the network device usually requires at least one relay device (a terminal or relay node with relay capability) to establish a connection with the terminal device.

In a scene blocked by buildings or other obstacles, when the network equipment or relay equipment is overloaded or is about to be overloaded, the relay equipment is required to reject the connection of the terminal equipment so that the network equipment or relay equipment can work normally. Existing standards do not specify how to solve the problem that the base station or the relay device is overloaded or will be overloaded in a scenario where a network device establishes a connection with a terminal device through at least one relay device. Therefore, those skilled in the art need a solution. The method to deal with the overload of network equipment or relay equipment.

Summary of the invention

This application provides a data processing method, a relay device, and a network device, which can realize that in a scenario where a network device establishes a connection with a terminal device through at least one relay device, when the network device or the relay device is overloaded or will be overloaded When, carry out corresponding overload control.

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

In a first aspect, an embodiment of the present application discloses a data processing method, including: a relay device receives a first message sent by a network device, the first message includes at least one access reason, for example, the access reason may be But it is not limited to emergency calls (emergency), high priority users (high priority access), called (mt-access), signaling (mo-signalling), calling party (mo-data) or delay tolerant access (delay Tolerant access), taking the network device as an access network device as an example, in one embodiment, when the access network device detects that it is overloaded or is about to be overloaded, it can send a first message to the relay device. In an embodiment, the access network device may detect the overload condition on the relay device with which it has a connection relationship by itself, and then directly send the first message to the relay device. The relay device rejects, according to the first message, the connection of the terminal device whose access reason belongs to the at least one access reason. Through the above method, the overload control of the access network device can solve the overload problem of the relay device. Compared with the overload control of the relay device itself, the access network device can perform centralized control of the relay device to achieve load balancing.

In a design of the present application, the method further includes: the relay device sends a second message to the network device, the second message is used to indicate that the relay device is overloaded, or, the first The second message includes the carrying capacity of the relay device. In the embodiment of the present application, if the relay device detects overload, or detects that it is about to be overloaded, it may send a second message to the access network device. The second message may indicate that the network device relay device is overloaded, or the first The second message includes the carrying capacity of the relay device. The access network device can determine whether the relay device is overloaded or will be overloaded according to the carrying capacity of the relay device.

In a design of the present application, the bearer capability includes the maximum number of terminals supported, and the terminal in the maximum number of terminals supported is at least one of a terminal in a connected state and a terminal in an idle state.

In a design of the present application, the method further includes: the relay device receives the access request sent by the first terminal device; the relay device obtains the access reason of the first terminal device; If the access reason of the first terminal device is one of the at least one access reason included in the first message, the relay device refuses to connect with the first terminal device. In this embodiment, the access request may be Msg3, and the connection request Msg3 may be, but is not limited to, one of RRC connection resume request and connection reestablishment request RRC connection reestablishment request. The connection request Msg3 can carry the access reason of the UE. After receiving the connection request Msg3 sent by the UE, the relay device can obtain the access reason of the UE from the connection request Msg3. Since the relay device previously received the first message sent by the access network device, the relay device can traverse the at least one access reason carried in the first message, if it traverses the at least one access reason carried in the first message When the access reason carried in the connection request Msg3 is reached, the relay device refuses to connect with the UE. Specifically, the relay device may send a connection rejection message RRC connection reject to the UE.

In a design of the present application, the method further includes: the relay device receives the first connection recovery request sent by the second terminal device, and the first connection recovery request RRC connection resume request carries not limited to the resume identifier (Resume ID), access reason, if the UE did not store the UE context when the RRC connection was released last time, the first connection resume request RRC connection resume request should also carry the identifier assigned to the UE by the core network, such as S-TMSI; the relay The device determines the first radio resource configuration information corresponding to the second terminal device. In this embodiment of the application, the first radio resource configuration information may be PDCCH, PDSCH, and other resource configurations. In the prior art, the UE and the network device (for example, In the scheme of random access by the access network equipment, the access network equipment completes the configuration of radio resources. However, in the scenario where the access network equipment establishes a connection with the UE through at least one relay device, the access network equipment A connection is established with the UE through at least one relay device, so the access network device cannot accurately configure the radio resources. In this embodiment, the relay device performs the radio resource configuration, and the radio resource configuration can be performed more accurately; The relay device sends a second connection recovery request to the network device. The second connection recovery request carries the first radio resource configuration information. In this embodiment of the application, the relay device determines the first radio resource configuration corresponding to the UE. After the information, the configured first radio resource configuration information can be carried in the first connection recovery request to obtain the second connection recovery request RRC connection resume request, and the second connection recovery request RRC connection resume request is sent to the access network device, It should be noted that the relay device may receive the first connection resume request RRC connection resume request sent by the UE through the first interface connected to the UE, and send the second connection resume request through the second interface connected to the access network device RRC connection resume request.

In a design of the present application, the method further includes: the relay device receives the connection recovery message sent by the network device.

In a design of the present application, the second connection recovery request carries the terminal identification of the terminal device, and the connection recovery message carries the terminal identification. In this embodiment, the terminal identifier of the terminal device may be Temp C-RNTI or C-RNTI.

In a design of the present application, the method further includes: the relay device receives a connection rejection message sent by the network device; and the relay device sends the connection rejection message to the second terminal device . In this embodiment of the application, after the access network device receives the second connection resume request RRC connection resume request sent by the relay device, if the access network device cannot find the UE's resume ID and UE context information, or finds that the connection cannot be resumed, Or after the access network device is found to be overloaded, the access network device can send a connection rejection message RRC connection reject to the relay device, which is used by the relay device to reject the UE, that is, the relay device sends a connection rejection message RRC connection reject to UE.

In a design of the present application, the method further includes: the relay device receives a first request sent by a third terminal device; the relay device sends the first request to the network device; The relay device receives the third message sent by the network device; the relay device determines the second wireless resource configuration information corresponding to the third terminal device; the relay device sends to the third terminal device A fourth message, where the fourth message carries the second radio resource configuration information.

In a design of the present application, the third message carries third wireless resource configuration information; the relay device determining the second wireless resource configuration information corresponding to the third terminal device includes: the relay The device determines the fourth radio resource configuration information corresponding to the third terminal device; the relay device adds the fourth radio resource configuration information to the third radio resource configuration information to obtain the second radio resource configuration Information; or, the relay device determines the second wireless resource configuration information corresponding to the third terminal device; the relay device replaces the third wireless resource configuration information with the second wireless resource configuration information. In an embodiment, the relay device may determine fourth radio resource configuration information corresponding to the UE, and add the fourth radio resource configuration information to the third radio resource configuration information to obtain the second radio resource Configuration information. In an embodiment, the relay device may determine the second wireless resource configuration information corresponding to the terminal device, and replace the third wireless resource configuration information with the second wireless resource configuration information. In an embodiment, the relay device may modify at least one parameter configuration in the third radio resource configuration information to obtain the second radio resource configuration information. In the embodiment of this application, after the relay device receives the third wireless resource configuration information carrying the configuration of the access network device, if the relay device thinks that the configuration of the access network device is unreasonable, the relay device can add or modify the wireless resource configuration information. Resource configuration. In the scenario where the access network device establishes a connection with the UE through at least one relay device, because the access network device establishes a connection with the UE through at least one relay device, the access network device cannot accurately configure radio resources In this embodiment, the wireless resource configuration is performed by the relay device, which can perform the wireless resource configuration more accurately.

In a design of the present application, the first request is a third connection recovery request; the third message is a first connection establishment message; and the fourth message is a second connection establishment message. In the embodiment of this application, after the access network device receives the third connection resume request RRC connection resume request sent by the relay device, if the access network device cannot find the UE's resume ID and UE context information, or finds that the connection cannot be resumed, Or after the access network device is found to be overloaded, that is, the access network device cannot restore the RRC connection for the UE, the access network device may roll back the connection restoration process to the connection establishment process. Specifically, the access network device may reply to the third connection recovery request RRC connection setup message on SRB0, with functions such as a connection establishment process. In an embodiment, the first connection setup message RRC connection setup may carry third radio resource configuration information. In this embodiment, the access network device receives the third connection recovery request RRC connection resume sent by the relay device. After the request, the third radio resource configuration information corresponding to the UE can be configured, and the third radio resource configuration information can be delivered to the relay device through the third connection recovery request RRC connection resume request.

In a design of the present application, the method further includes: the relay device receives a connection setting complete message sent by the third terminal device; and the relay device sends the connection setting to the network device Complete the message. In the embodiment of this application, when the UE receives the second connection establishment message RRC connection setup as a response to the third connection recovery request RRC connection resume request, it discards the stored access stratum context and notifies the non-access stratum (non-access stratum). -access stratum, NAS) connection recovery in RRC has failed; UE configures according to the second connection establishment message RRC connection setup, and sends a connection setup complete message RRC connection setup complete on SRB1 to the relay device.

In a design of this application, the first request is a connection re-establishment request; the third message is a first connection re-establishment message; and the fourth message is a second connection re-establishment message.

In a design of the present application, the method further includes: the relay device receives the connection re-establishment complete message sent by the third terminal device; the relay device sends the connection re-establishment message to the network device Complete the message.

In a second aspect, an embodiment of the present application discloses a data processing method, including: a network device sends a first message to a relay device, where the first message includes at least one access reason, so that the relay device is The first message refuses to connect to a terminal device whose reason belongs to the at least one access reason.

In a design of the present application, the method further includes: the network device receives a second message sent by the relay device, the second message is used to indicate that the relay device is overloaded, or, The second message includes the bearer capability of the relay device.

In a design of the present application, the method further includes: the network device receives a second connection recovery request sent by the relay device, and the second connection recovery request carries the information determined by the relay device The first wireless resource configuration information.

In a design of the present application, the method further includes: the network device sends a connection recovery message to the relay device.

In a design of the present application, the second connection recovery request carries the terminal identification of the terminal device, and the connection recovery message carries the terminal identification.

In a design of the present application, the method further includes: the network device sends a connection rejection message to the relay device, so that the relay device sends the connection rejection message to the second terminal device.

In a design of the present application, the method further includes: the network device receives the first request sent by the relay device; the network device sends a third message to the relay device, so that all The relay device determines the second wireless resource configuration information corresponding to the third terminal device, and sends a fourth message that carries the second wireless resource configuration information to the third terminal device.

In a design of the present application, the first request is a third connection recovery request; the third message is a first connection establishment message; and the fourth message is a second connection establishment message.

In a design of the present application, the method further includes: the network device receives a connection setup complete message sent by the relay device.

In a design of the present application, the method further includes: the network device receives a connection re-establishment complete message sent by the relay device.

In a third aspect, an embodiment of the present application discloses a data processing method, including: the relay device receives a first connection recovery request sent by a second terminal device; the relay device determines that the second terminal device corresponds to The first wireless resource configuration information; the relay device sends a second connection recovery request to the network device, and the second connection recovery request carries the first wireless resource configuration information.

In a design of the present application, the method further includes:

The relay device receives the connection recovery message sent by the network device.

In a design of the present application, the method further includes:

The relay device receives a connection rejection message sent by the network device;

The relay device sends the connection rejection message to the second terminal device.

In a fourth aspect, the embodiments of the present application disclose a data processing method, including:

The relay device receives the first request sent by the third terminal device; the relay device sends the first request to the network device; the relay device receives the third message sent by the network device The relay device determines the second radio resource configuration information corresponding to the third terminal device; the relay device sends a fourth message to the third terminal device, and the fourth message carries the second Radio resource configuration information.

In a design of the present application, the third message carries third wireless resource configuration information; the relay device determining the second wireless resource configuration information corresponding to the third terminal device includes: the relay The device determines the fourth radio resource configuration information corresponding to the third terminal device; the relay device adds the fourth radio resource configuration information to the third radio resource configuration information to obtain the second radio resource configuration Information; or, the relay device determines the second wireless resource configuration information corresponding to the third terminal device; the relay device replaces the third wireless resource configuration information with the second wireless resource configuration information.

In a design of the present application, the method further includes: the relay device receives a connection setting complete message sent by the third terminal device; and the relay device sends the connection setting to the network device Complete the message.

In a design of this application, the first request is a connection re-establishment request; the third message is a first connection re-establishment message;

The fourth message is a second connection re-establishment message.

In a fifth aspect, an embodiment of the present application discloses a data processing method, including:

The network device receives a second connection recovery request sent by the relay device, and the second connection recovery request carries the first wireless resource configuration information determined by the relay device.

In a sixth aspect, an embodiment of the present application discloses a data processing method, including:

The network device receives the first request sent by the relay device; the network device sends a third message to the relay device, so that the relay device determines the second request corresponding to the third terminal device Wireless resource configuration information and sending a fourth message carrying the second wireless resource configuration information to a third terminal device.

In a seventh aspect, an embodiment of the present application discloses a relay device, including:

A receiving unit, configured to receive a first message sent by a network device, where the first message includes at least one access reason;

The sending unit is configured to refuse connection of a terminal device whose access reason belongs to the at least one access reason according to the first message.

In a design of the present application, the sending unit is further configured to send a second message to the network device, the second message is used to indicate that the relay device is overloaded, or the second message includes The carrying capacity of the relay device.

In a design of the present application, the receiving unit is further configured to: receive an access request sent by the first terminal device;

The relay device further includes: a processing unit;

The processing unit is configured to obtain the access reason of the first terminal device;

If the access reason of the first terminal device is one of the at least one access reason included in the first message, the sending unit is further configured to refuse to connect with the first terminal device.

In a design of the present application, the receiving unit is further configured to: receive the first connection recovery request sent by the second terminal device;

The processing unit is further configured to determine the first radio resource configuration information corresponding to the second terminal device;

The sending unit is further configured to send a second connection recovery request to the network device, where the second connection recovery request carries the first wireless resource configuration information.

In a design of the present application, the receiving unit is further configured to receive a connection recovery message sent by the network device.

In a design of the present application, the receiving unit is further configured to receive a connection rejection message sent by the network device;

The sending unit is further configured to send the connection rejection message to the second terminal device.

In a design of the present application, the receiving unit is further configured to receive the first request sent by the third terminal device;

The sending unit is further configured to send the first request to the network device;

The receiving unit is further configured to receive a third message sent by the network device;

The processing unit is further configured to determine second radio resource configuration information corresponding to the third terminal device;

The sending unit is further configured to send a fourth message to the third terminal device, where the fourth message carries the second radio resource configuration information.

In a design of the present application, the third message carries third radio resource configuration information;

The processing unit is specifically used for:

Determining fourth radio resource configuration information corresponding to the third terminal device;

Adding the fourth radio resource configuration information to the third radio resource configuration information to obtain the second radio resource configuration information; or,

Determining second radio resource configuration information corresponding to the third terminal device;

Replace the third wireless resource configuration information with the second wireless resource configuration information.

In a design of this application, the first request is a third connection restoration request;

The third message is a first connection establishment message;

The fourth message is a second connection establishment message.

In a design of the present application, the receiving unit is further configured to receive a connection setup complete message sent by the third terminal device;

The sending unit is further configured to send the connection setting complete message to the network device.

In a design of this application, the first request is a connection re-establishment request;

The third message is a first connection re-establishment message;

The fourth message is a second connection re-establishment message.

In a design of the present application, the receiving unit is further configured to receive a connection re-establishment complete message sent by the third terminal device;

The sending unit is further configured to send the connection re-establishment complete message to the network device.

In an eighth aspect, an embodiment of the present application discloses a network device, including:

The sending unit is configured to send a first message to a relay device, where the first message includes at least one access reason, so that the relay device refuses access according to the first message because the reason belongs to the at least one access The reason for the terminal device connection.

In a design of this application, the network device further includes: a receiving unit;

The receiving unit is configured to receive a second message sent by the relay device, where the second message is used to indicate that the relay device is overloaded, or the second message includes the bearer of the relay device ability.

In a design of the present application, the bearer capability includes the maximum number of terminals supported, wherein the terminal in the maximum number of terminals supported is at least one of a terminal in a connected state and a terminal in an idle state.

In a design of the present application, the receiving unit is further configured to receive a second connection recovery request sent by the relay device, and the second connection recovery request carries the first connection recovery request determined by the relay device. Radio resource configuration information.

In a design of the present application, the sending unit is further configured to send a connection recovery message to the relay device.

In a design of the present application, the sending unit is further configured to send a connection rejection message to the relay device, so that the relay device sends the connection rejection message to the second terminal device.

In a design of the present application, the receiving unit is further configured to receive the first request sent by the relay device;

The sending unit is further configured to send a third message to the relay device, so that the relay device determines the second wireless resource configuration information corresponding to the third terminal device and sends to the third terminal device the The fourth message of the second radio resource configuration information.

The third message is a first connection establishment message;

The fourth message is a second connection establishment message.

In a design of the present application, the receiving unit is further configured to receive a connection setup complete message sent by the relay device.

The third message is a first connection re-establishment message;

The fourth message is a second connection re-establishment message.

In a design of the present application, the receiving unit is further configured to receive a connection re-establishment complete message sent by the relay device.

In a ninth aspect, an embodiment of the present application discloses a relay device, including:

The receiving unit is configured to: receive the first connection recovery request sent by the second terminal device;

A processing unit, configured to determine the first wireless resource configuration information corresponding to the second terminal device;

The sending unit is configured to send a second connection recovery request to the network device, where the second connection recovery request carries the first wireless resource configuration information.

In a tenth aspect, an embodiment of the present application discloses a relay device, including:

A receiving unit, configured to receive the first request sent by the third terminal device;

A sending unit, configured to send the first request to the network device;

A processing unit, configured to determine second wireless resource configuration information corresponding to the third terminal device;

The processing unit is specifically used for:

The third message is a first connection establishment message;

The fourth message is a second connection establishment message.

The third message is a first connection re-establishment message;

The fourth message is a second connection re-establishment message.

In an eleventh aspect, an embodiment of the present application discloses a network device, including:

The receiving unit is configured to receive a second connection recovery request sent by the relay device, where the second connection recovery request carries the first wireless resource configuration information determined by the relay device.

In a design of the present application, the network device further includes a sending unit, which is further configured to send a connection recovery message to the relay device.

In the twelfth aspect, the embodiments of the present application disclose a network device, including:

A receiving unit, configured to receive the first request sent by the relay device;

The sending unit is configured to send a third message to the relay device, so that the relay device determines the second wireless resource configuration information corresponding to the third terminal device and sends to the third terminal device the first message 2. The fourth message of radio resource configuration information.

The third message is a first connection establishment message;

The fourth message is a second connection establishment message.

The third message is a first connection re-establishment message;

The fourth message is a second connection re-establishment message.

In a thirteenth aspect, a relay device is provided. The relay device includes a memory and a processor, and the memory is used to store program codes that the processor needs to execute. The communication interface is used to communicate with the terminal device. The processor is configured to execute the program code stored in the memory, and is specifically configured to execute any method of the first aspect, the third aspect, and the fourth aspect.

In a fourteenth aspect, a network device is provided. The network device includes a memory and a processor, and the memory is used to store program codes that the processor needs to execute. The communication interface is used to communicate with the relay device. The processor is configured to execute the program code stored in the memory, and is specifically configured to execute any method of the second aspect, the fifth aspect, and the sixth aspect.

In a fifteenth aspect, a computer-readable storage medium is provided for storing computer software instructions used to perform the functions designed in any one of the above-mentioned first, third, and fourth aspects, including Execute the program designed by any one of the above-mentioned first, third and fourth aspects.

In a sixteenth aspect, a computer-readable storage medium is provided for storing computer software instructions used to perform the functions designed in any one of the second, fifth, and sixth aspects mentioned above, which contains instructions for Execute the program designed by any one of the above-mentioned second aspect, fifth aspect and sixth aspect.

It can be seen from the above technical solutions that this application has the following advantages:

An embodiment of the present application discloses a data processing method, including: a relay device receives a first message sent by a network device, the first message includes at least one access reason, and the relay device rejects according to the first message The terminal device whose access cause belongs to the at least one access cause is connected. Through the above method, the overload control of the access network device can solve the overload problem of the relay device. Compared with the overload control of the relay device itself, the access network device can perform centralized control of the relay device to achieve load balancing.

Description of the drawings

Figure 1 is a schematic diagram of a wireless communication system involved in this application;

Figure 2 shows a schematic diagram of a multi-hop relay scenario;

Fig. 3 shows a schematic flowchart of a process of a data processing method in an embodiment of the present application;

FIG. 4 shows a schematic flowchart of a process of a data processing method in an embodiment of the present application;

FIG. 5 shows a schematic flowchart of a process of a data processing method in an embodiment of the present application;

FIG. 6 shows a schematic flowchart of a process of a data processing method in an embodiment of the present application;

FIG. 7 shows a schematic flowchart of a process of a data processing method in an embodiment of the present application;

FIG. 8a shows a schematic flowchart of a process of a data processing method in an embodiment of the present application;

FIG. 8b shows a schematic flowchart of a process of a data processing method in an embodiment of the present application;

FIG. 8c shows a schematic flowchart of a process of a data processing method in an embodiment of the present application;

FIG. 8d shows a schematic flowchart of the process of a data processing method in an embodiment of the present application;

FIG. 9 shows a schematic flowchart of a process of a data processing method in an embodiment of the present application;

FIG. 10 shows a schematic structural diagram of a relay device in an embodiment of the present application;

FIG. 11 shows a schematic structural diagram of a relay device in an embodiment of the present application;

FIG. 12 shows a schematic structural diagram of a network device in an embodiment of the present application;

FIG. 13 shows a schematic structural diagram of a relay device in an embodiment of the present application;

Fig. 14 shows a schematic structural diagram of a communication system in an embodiment of the present application.

detailed description

The present application provides a data processing method, which can implement corresponding overload control when the base station or the relay device is overloaded or will be overloaded in a scenario where a base station establishes a connection with a terminal device through at least one relay device.

Figure 1 shows the wireless communication system involved in the present application. The wireless communication system can be a long term evolution (LTE) system, a fifth generation mobile communication (the 5th Generation, 5G) system, and a new air interface. (NR) system, machine to machine communication (machine to machine, M2M) system, etc. As shown in FIG. 1, the wireless communication system 100 may include: a network device 103, a terminal device 101, and a relay device 102. The wireless communication system 100 may be a multi-hop relay system, and there are at least two relay devices 102 between the network device 103 and the terminal device 101. among them:

The network device 103 can be a base station or other access network equipment. The base station can be used to communicate with one or more terminals, or it can be used to communicate with one or more base stations with partial terminal functions (such as macro base stations and micro base stations). , Such as access points, communication between). The base station can be the base transceiver station (BTS) in the time division synchronous code division multiple access (TD-SCDMA) system, or the evolutional node B in the LTE system. , Access network equipment), and the base station gNB in the 5G system and the New Air Interface (NR) system. In addition, the base station may also be an access point (AP), a transmission node (trans TRP), a central unit (CU), or other network entities, and may include some or all of the functions of the above network entities .

The terminal device 101 may be distributed in the entire wireless communication system 100, and may be stationary or mobile. In some embodiments of the present application, the terminal device 101 in the embodiments of the present application is a device with a wireless transceiver function, including but not limited to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote Station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device 101 can also be a cellular phone, a cordless phone, a session initiation protocol (SOP190191) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), and a wireless Handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, drone devices, smart homes, and terminal devices in 5G networks or future evolution of public land mobile communication networks ( The terminal equipment in the public land mobile network (PLMN) is not limited in this embodiment of the application.

The relay device 102 can be distributed at the edge of the cell, which can expand the coverage of the network device 103. The relay device 102 may include two physical layer entities. Among them, an entity is used to communicate with its subordinate users (that is, the terminal device 101 connected to the relay device 102). The other entity has a user function (that is, a terminal function) for the network device 103 to communicate. In specific implementation, the relay device 102 may be a relay base station, such as a micro base station. The relay device 102 may also be a relay terminal, such as an idle terminal. The relay device 102 may also be a network entity such as a relay transceiver node (TRP), a user terminal equipment (customer premise equipment, CPE), a relay transceiver, and a relay agent.

The embodiments of the present application can also be applied to a wireless relay networking scenario in 5G. For example, it can be applied to the multi-hop relay scenario shown in FIG. 2. As shown in Figure 2, the architecture of the embodiment of the present application may include multiple terminal devices UE (UE1, UE2, UE3, UE4, UE5, UE6, UE7) and multi-level relay devices (relay device 1, relay device 2). , Relay device 3, relay device 4, relay device 5, and relay device 6). For example, in a link, a network device can interact with UE1, UE2, and UE3 through relay device 1, relay device 2, relay device 3, relay device 4, and relay device 5. It should be noted that the figure The number of relay devices in 3 is only an indication, and can be selected according to requirements in actual applications, and is not limited here.

In a wireless communication system, a terminal device needs to establish a connection with the network, and this process is usually called a random access (random access, RA) process. Through random access, the terminal device can establish uplink synchronization with the network and obtain a unique cell-Radio network temporary identifier (C-RNTI). The ultimate goal of random access is to establish synchronization. Only when the uplink synchronization is achieved, the terminal equipment can perform uplink transmission.

The random access process includes two ways: contention and non-competition. Taking the network device as the access network device as an example, the contention-based random access process usually consists of the following steps: the terminal device randomly selects a random access preamble (RAP) from the random access preamble sequence set, And send the selected RAP on the random access resource (for example, the physical layer random access channel (PRACH)) pre-designated by the network device; the terminal device uses the physical layer downlink shared channel (PDSCH) ) Receives the random access response (RAR) message issued by the access network device; the terminal device uses the C-RNTI contained in the RAR message to specify the physical uplink shared channel (physical uplink) in the RAR message. Shared channel (PUSCH) transmits a random access process message including the identification of the terminal device in the cell to the access network device for contention resolution; and the terminal device needs to receive the contention resolution message sent from the access network device, So as to complete the random access process. However, the existing standards do not define how to implement random access of the UE in a scenario where a network device establishes a connection with a terminal device UE through at least one relay device, and how to respond when the network device or relay device is overloaded. Overload control.

Fig. 3 shows a schematic flowchart of a process of a data processing method in an embodiment of the present application. It should be understood that FIG. 3 shows the steps or operations of the data processing process, but these steps or operations are only examples, and the embodiment of the present application may also perform other operations or variations of each operation in FIG. 3. In addition, the various steps in FIG. 3 may be performed in a different order from that presented in FIG. 3, and it is possible that not all the operations in FIG. 3 are to be performed.

In this article, the relay device can be a simple relay, a terminal with a relay function, or an integrated access backhaul (IAB) node. Specifically, when the terminal device is configured as a relay or an IAB node, the terminal device has protocol stacks on both sides, one side is the relay side, and the other side is the terminal side, where the relay side is configured as a relay Or the configuration of the IAB node, for example, the reconfiguration or configuration process of the relay is the operation of the relay or the IAB node, and the terminal configuration uses the configuration of the terminal, such as UE security, bearer configuration, etc.

It should be noted that in an uplink scenario, when each relay/IAB node receives data from a child node, it is the relay/IAB node side of the relay device that receives the data from the terminal or the UE side of the lower node, such as RRC connection Request message and RRC connection complete message. When each relay/IAB node sends data to the parent node, it sends data to the relay/IAB node side of the parent node or the base station through the terminal side of the relay/IAB node.

In a downlink scenario, the parent node sends data, such as an RRC connection establishment message, or other downlink messages, to the terminal side or terminal of the child node through the relay node side.

301. The terminal device UE sends a random access request RA request to a relay device, and correspondingly, the relay device receives the RA request sent by the UE.

In this embodiment of the application, the UE may send an RA request to the relay device, and the RA request may be Msg1 (message1), where Msg1 includes a random access preamble (hereinafter referred to as Preamble). Specifically, the UE may determine a random access preamble according to the root sequence number in the system message, and send the aforementioned preamble on the time-frequency resource corresponding to the PRACH time-frequency information in the system message. Preamble may include cyclic prefix (CP), preamble sequence and guard time GT. Among them, the cyclic prefix (CP) is used to combat multipath and ensure orthogonality between multiple access users. The guard time GT is used as a guard interval to avoid interference to the signal of the next subframe. The preamble sequence is used by the base station to detect the random access request of the terminal and for measuring the uplink timing advance.

302. The relay device sends a random access response RAR to the UE, and correspondingly, the UE receives the RAR sent by the relay device.

In this embodiment of the application, after receiving the RA request sent by the UE, the relay device may send Msg2 (message2) to the UE. Msg2 may be a random access response (RAR) message, where Msg2 may include The timing advance (TA) calculated by the subsequent device for the UE. The relay device will feed back the MAC random access response RAR in the physical downlink shared control channel (PDSCH) within the random access response window. Among them, RAR can be considered as the aforementioned Msg2, which is carried in a downlink shared channel (Downlink Share Channel, DL-SCH).

The content contained in the RAR may include the UE's TA, uplink resource authorization (uplink grant, UL Grant), and temporary cell radio network temporary identifier (Temp C-RNTI). Among them, TA is the difference between the relay device's measurement of the reception of the preamble and the standard time of the relay device. It is used to notify the UE to adjust the timing advance when sending Msg3 (message3) later; UL Grant is the allocation for sending Msg3 to UE The Temp C-RNTI is used to identify the UE when the UE sends Msg3. After the contention is resolved, the successful UE converts the identification to C-RNTI, and the failed user waits for the next access.

The UE can obtain the RAR sent by the relay device by decoding the PDSCH channel. When the UE decodes the PDSCH channel, it can first decode the physical downlink control channel (PDCCH) resource allocation information through random access radio network temporary identity (RA-RNTI), and then continue decoding PDSCH channel content. The UE may determine the RA-RNTI according to the location of the PRACH time-frequency resource carrying Msg1, where Msg1 is the message used by the UE to send the random access preamble in step 301.

303. The UE sends a first connection resume request RRC connection resume request to the relay device, and correspondingly, the relay device receives the first connection resume request RRC connection resume request sent by the UE.

In the embodiment of the present application, the first connection recovery request received by the relay node or IAB node side of the similar relay device, the relay or IAB node side here is similar to the function of the access network device.

In this embodiment of the application, after receiving the RAR sent by the relay device, the UE may send Msg3 (message3) to the relay device, and Msg3 (message3) may be an RRC connection resume request. The UE may send the first connection resume request RRC connection resume request on the signaling radio bearers 0 (signalling radio bearers, SRB0), where the first connection resume request RRC connection resume request carries not limited to the resume ID (Resume ID) and access the reason. If the UE did not store the UE context when the RRC connection was released last time, the RRC Connection request sent at this time should also carry the identity assigned to the UE by the core network, such as S-TMSI.

Msg3 can support a hybrid automatic repeat request (HARQ) process, that is, when the relay device does not successfully receive Msg3, it can send a NACK (receive failure response) to the UE to instruct the UE to retransmit the Msg3. Optionally, the relay device can tell the UE the resource and location of the retransmission of Msg3 through the DCI0 scrambled by Temp C-RNTI.

304. The relay device determines first radio resource configuration information corresponding to the UE.

In the embodiment of the present application, the relay node or IAB node side of a similar relay device determines the first radio resource configuration information corresponding to the UE, and the relay or IAB node side here has a function similar to an access network device.

In the embodiment of the present application, after receiving the first connection resume request RRC connection resume request sent by the UE, the relay device can determine the first radio resource configuration information corresponding to the UE.

In the embodiment of the present application, the radio resource configuration information may include at least one of the following: bearer containment, MAC layer configuration, physical layer resource configuration, RLF-related timer and constant configuration. The physical layer resource configuration may include: PDCCH configuration, PDSCH configuration, PUSCH configuration, and so on.

In the prior art, in a scheme for random access between a UE and a network device (for example, an access network device), the wireless resource configuration is completed by the access network device. However, the access network device communicates with the network device through at least one relay device. In the scenario where the UE establishes a connection, because the access network device establishes a connection with the UE through at least one relay device, the access network device cannot accurately configure the radio resources. In this embodiment, the relay device performs the radio resource configuration. The wireless resource configuration can be performed more accurately.

In another embodiment, after receiving the first connection resume request RRC connection resume request sent by the UE, the relay device may determine the first radio resource configuration information corresponding to the UE by itself, and send the first radio resource configuration information to Terminal Equipment. The determined first resource configuration information may also be sent to the access network device, and sent by the access network device to the terminal device through the relay device.

In another embodiment, the relay device may not determine the first resource configuration information first. After receiving the connection recovery message RRC connection resume sent by the access network device, if there is no resource configuration information, the first resource may be determined Configure the information and add it, or if there is, you can modify or supplement the resource configuration information.

305. The relay device sends a second connection resume request RRC connection resume request to the network device access network device, and correspondingly, the access network device receives the second connection resume request RRC connection resume request sent by the relay device.

In the embodiment of the present application, the terminal side of the relay device sends the second connection recovery request RRC connection resume request to the relay/IAB node side of the access network device or the parent node.

In this embodiment of the application, after the relay device determines the first radio resource configuration information corresponding to the UE, it can carry the configured first radio resource configuration information in the first connection recovery request to obtain the second connection recovery request RRC connection resume request, And send the second connection resume request RRC connection resume request to the access network device. It should be noted that the relay device can receive the first connection resume request RRC connection resume request sent by the UE through the first interface connected to the UE. The second connection resume request RRC connection resume request is sent through the second interface connected to the access network device.

Optionally, the second connection recovery request carries the terminal identification of the terminal device, and the connection recovery message carries the terminal identification. In this embodiment, the terminal identification of the terminal device may be Temp C-RNTI or C-RNTI. RNTI.

It should be noted that, in this embodiment, the number of relay devices is at least one. Therefore, the relay device sending the second connection recovery request RRC connection resume request to the network device access network device can also be understood as at least one After the devices send a second connection resume request RRC connection resume request to the network device access network device through signaling forwarding, taking the scenario shown in FIG. 2 as an example, UE1 passes relay device 5 and relay device 4 The relay device 3, relay device 2, and relay device 1 are connected to the network device. Therefore, the relay device 5 first sends the second connection recovery request RRC connection resume request to the relay device 4, and then the relay device 4 The second connection resume request RRC connection resume request is sent to the relay device 3, and so on, the relay device 1 sends the second connection resume request RRC connection resume request to the network device.

306. The access network device sends a connection resume message RRC connection resume to the UE, and correspondingly, the UE receives the connection resume message RRC connection resume sent by the access network device.

In this embodiment of the application, after receiving the second connection recovery request RRC connection resume request sent by the relay device, the access network device may send a connection recovery message RRC connection resume to the UE.

In the embodiment of this application, after the access network device receives the second connection resume request RRC connection resume request sent by the relay device, it can resolve the conflict, and the access network device verifies whether the Resume ID carried in the RRC connection resume request exists. Since the second connection recovery request carries the first radio resource configuration information, the access network device can perform radio resource configuration on the UE according to the first radio resource configuration information. If the access network device confirms that the Resume ID exists, it sends Msg4 (message4) to the UE. Msg4 can be a connection recovery message RRC connection resume. When sending this message, the page can carry the MAC CE used for contention resolution for contention resolution. The recovery message RRC connection resume may include the Temp C-RNTI of the UE. Since conflict resolution has already been performed at this time, the above Temp C-RNTI can also be considered as a C-TNTI.

In this embodiment, when the access network device sends the connection resume message RRC connection resume, the access network device adaptation layer can fill in the C-RNTI of the UE and the C of the UE parent node (relay device directly connected to the UE). -RNTI, and send the connection recovery message RRC connection resume to the relay device directly connected to the access network device. The relay device can route according to the C-RNTI of the parent node of the UE, and finally pass the relay directly connected to the UE The device sends a connection resume message RRC connection resume to the UE.

That is, in the embodiment of the present application, the access network device sending the connection resume message RRC connection resume to the UE can be understood as the access network device sending the connection resume message RRC connection resume to the UE through the relay device.

Optionally, the MAC PDU in Msg4 may carry a contention resolution identifier. Msg4 can also support the HARQ process, and only the UE that has completed contention resolution will feed back ACK to the access network device. After the UE receives Msg4, if it determines that it has completed the contention resolution according to the contention resolution identifier in the Msg4, that is, the competition successfully accesses the access network device, the UE can indicate an ACK to the access network device through the relay device, and the access network device’s After receiving the ACK, the physical layer (physical, PHY) reports to the media access control (MAC) layer of the access network device.

307. The access network device sends a connection resume message RRC connection resume to the relay device, and correspondingly, the relay device receives the connection resume message RRC connection resume sent by the access network device.

In the embodiment of the present application, after receiving the second connection recovery request RRC connection resume request sent by the relay device, the access network device may send the connection recovery message RRC connection resume to the relay device.

It should be noted that this embodiment of the application does not limit the timing relationship between step 307 and step 306, that is, the access network device may send a connection recovery message to the UE after RRC connection resume, and then the access network device sends the message to the relay device. The connection resume message RRC connection resume can also be that after the access network device sends the connection resume message RRC connection resume to the relay device, the access network device sends the connection resume message RRC connection resume to the UE, or it can be the access network device At the same time, the RRC connection resume message is sent to the UE.

In the embodiment of this application, because the connection recovery message RRC connection resume sent by the access network device to the UE has integrity protection, even if the connection recovery message RRC connection resume is forwarded through the relay device, for the relay device The connection resume message RRC connection resume sent by the access network device to the UE is transparently transmitted, so the access network device needs to send an additional message to notify the relay device that the UE contention resolution is complete and the radio resource configuration can also be confirmed. , The access network device sends a connection resume message RRC connection resume to the relay device.

308. The UE sends a connection resume complete message RRC connection resume complete to the access network device, and correspondingly, the access network device receives the connection resume complete message RRC connection resume complete sent by the UE.

In this embodiment, after the UE receives the connection resume message RRC connection resume sent by the access network device, it can perform the following operations: restore the RRC configuration and security context according to the stored terminal access layer context; rebuild SRB1 and the data radio bearer (data Radio link layer control protocol (RLC) entity on radio bearer (DRB); restore packet data convergence protocol (PDCP) state, rebuild PDCP entity on SRB1 and DRB; if the connection is restored, the message RRC The connection resume indicates that the header compression status information on the DRB needs to be continued, and the PDCP layer RRC is notified to perform the connection recovery operation, so that the PDCP resets the corresponding data transmission count value and continues to use the original header compression protocol context on the DRB ; Otherwise, just notify the PDCP layer RRC to perform the connection recovery operation, so that PDCP resets the corresponding data transmission count value, and resets the header compression protocol context on the DRB; restores SRB1 and DRB; according to the connection recovery message RRC connection resume Next Hop The Chaining Count parameter updates the security key; and based on the updated security key, generates an integrity protection key and performs integrity protection verification. If the integrity protection verification is successful, continue to generate an encryption key; and instruct PDCP to immediately activate integrity protection And encryption function. For the data on the SRB, integrity protection and encryption are required, and for the data on the DRB, only encryption is performed.

In the embodiment of this application, the UE sends a connection resume complete message RRC connection resume complete to the access network device. In this embodiment, the UE may send the connection resume complete message RRC connection resume complete to the relay device directly connected to the UE, and The message is forwarded, and finally the connection recovery complete message RRC connection resume complete is sent to the access network device through the relay device directly connected to the access network device.

That is, in this embodiment of the application, the UE sending the connection recovery complete message RRC connection resume complete to the access network device can be understood as the UE sending the connection recovery complete message RRC connection resume complete to the access network device through the relay device.

In the embodiment of this application, the terminal device UE sends a random access request RA request to the relay device, correspondingly, the relay device receives the RA request sent by the UE; the relay device sends a random access response RAR to the UE, correspondingly, The UE receives the RAR sent by the relay device; the UE sends the first connection resume request RRC connection resume request to the relay device, and correspondingly, the relay device receives the first connection resume request RRC connection resume request sent by the UE; the relay device Determine the first radio resource configuration information corresponding to the UE; the relay device sends a second connection resume request RRC connection resume request to the network device access network device, and correspondingly, the access network device receives the second connection resume request sent by the relay device. Connection resume request RRC connection resume request; the access network device sends a connection resume message RRC connection resume to the UE, and accordingly, the UE receives the connection resume message RRC connection resume sent by the access network device; the access network device sends the relay device The connection resume message RRC connection resume, correspondingly, the relay device receives the connection resume message RRC connection resume sent by the access network device; the UE sends the connection resume complete message RRC connection resume complete to the access network device, correspondingly, the access network The device receives the RRC connection resume complete message sent by the UE. In the foregoing manner, in a scenario where a network device establishes a connection with a terminal device through at least one relay device, the connection recovery of the UE is realized, and the relay device performs wireless resource configuration, which can perform wireless resource configuration more accurately.

Optionally, if the relay device does not carry the first radio resource configuration in the second connection resume request RRC connection resume request, the access network device may perform radio resource configuration.

The above is a detailed description of an embodiment in a scenario where the connection recovery is successful. Next, an embodiment of a data processing method in a scenario where the connection recovery fails is described in detail. FIG. 4 shows a data in an embodiment of the present application. A schematic flow chart of the process of the processing method. It should be understood that FIG. 4 shows the steps or operations of the data processing process, but these steps or operations are only examples, and the embodiment of the present application may also perform other operations or variations of each operation in FIG. 4. In addition, the various steps in FIG. 4 may be performed in a different order from that presented in FIG. 4, and it is possible that not all operations in FIG. 4 are to be performed.

401. The terminal device UE sends a random access request RA request to the relay device, and correspondingly, the relay device receives the RA request sent by the UE.

For a detailed description of step 401, refer to the description of step 301 in the embodiment corresponding to FIG. 3, which will not be repeated here.

402. The relay device sends a random access response RAR to the UE, and correspondingly, the UE receives the RAR sent by the relay device.

For a detailed description of step 402, refer to the description of step 302 in the embodiment corresponding to FIG. 3, which will not be repeated here.

403. The UE sends a first connection resume request RRC connection resume request to the relay device, and correspondingly, the relay device receives the first connection resume request RRC connection resume request sent by the UE.

For a detailed description of step 403, refer to the description of step 303 in the embodiment corresponding to FIG. 3, which will not be repeated here.

404. The relay device determines first radio resource configuration information corresponding to the UE.

For a detailed description of step 404, refer to the description of step 304 in the embodiment corresponding to FIG. 3, which will not be repeated here.

405. The relay device sends a second connection resume request RRC connection resume request to the network device access network device, and correspondingly, the access network device receives the second connection resume request RRC connection resume request sent by the relay device.

For a detailed description of step 405, refer to the description of step 305 in the embodiment corresponding to FIG. 3, which will not be repeated here.

406. The access network device sends a connection rejection message RRC connection reject to the relay device, and correspondingly, the relay device receives the connection rejection message RRC connection reject sent by the access network device.

In this embodiment of the application, the connection rejection message RRC connection reject may be an instruction message from the access network device to the relay device, and is used to instruct the relay device to forward the message to the terminal device.

In this embodiment of the application, after the access network device receives the second connection resume request RRC connection resume request sent by the relay device, if the access network device cannot find the UE's resume ID and UE context information, or finds that the connection cannot be resumed, Or after the access network device is found to be overloaded, the access network device can send a connection rejection message RRC connection reject to the relay device, which is used by the relay device to reject the UE, that is, the relay device sends a connection rejection message RRC connection reject to UE.

In the embodiment of the present application, the access network device may optionally carry indication information whether it is necessary to continue to retain the access layer context stored by the terminal. If the access network device instructs to release the access layer context, the UE discards the stored access Layer context and recovery identification, otherwise the terminal continues to save the existing access layer context.

407. The relay device sends a connection rejection message RRC connection reject to the UE, and accordingly, the UE receives the connection rejection message RRC connection reject sent by the relay device.

In this embodiment of the application, after the relay device receives the connection rejection message RRC connection reject sent by the access network device, it sends the connection rejection message RRC connection reject to the UE to realize the rejection of the UE.

It should be noted that the connection reject message RRC connection reject sent by the relay device to the UE may be scrambled by the C-RNTI.

In the embodiment of this application, the terminal device UE sends a random access request RA request to the relay device, correspondingly, the relay device receives the RA request sent by the UE; the relay device sends a random access response RAR to the UE, correspondingly, The UE receives the RAR sent by the relay device; the UE sends the first connection resume request RRC connection resume request to the relay device, and correspondingly, the relay device receives the first connection resume request RRC connection resume request sent by the UE; the relay device Determine the first radio resource configuration information corresponding to the UE; the relay device sends a second connection resume request RRC connection resume request to the network device access network device, and correspondingly, the access network device receives the second connection resume request sent by the relay device. Connection recovery request RRC connection resume request; the access network device sends a connection rejection message RRC connection reject to the relay device, and correspondingly, the relay device receives the connection rejection message RRC connection reject sent by the access network device; the relay device sends the UE to the UE The connection reject message RRC connection reject is sent, and accordingly, the UE receives the connection reject message RRC connection reject sent by the relay device. In the above manner, in a scenario where a network device establishes a connection with a terminal device through at least one relay device, the connection recovery rejection of the UE is realized, and the relay device performs wireless resource configuration, which can perform wireless resource configuration more accurately.

The above is a detailed description of an embodiment in the scenario of connection recovery failure. Next, a detailed description of an embodiment of a data processing method in the scenario of connection recovery fallback is described. FIG. 5 shows one of the embodiments of the present application. A schematic flowchart of the process of the data processing method. It should be understood that FIG. 5 shows the steps or operations of the data processing process, but these steps or operations are only examples, and the embodiment of the present application may also perform other operations or variations of each operation in FIG. 5. In addition, the various steps in FIG. 5 may be performed in a different order from that presented in FIG. 4, and it is possible that not all operations in FIG. 5 are to be performed.

501. The terminal device UE sends a random access request RA request to a relay device, and correspondingly, the relay device receives the RA request sent by the UE.

For a detailed description of step 501, refer to the description of step 301 in the embodiment corresponding to FIG. 3, which will not be repeated here.

502. The relay device sends a random access response RAR to the UE, and correspondingly, the UE receives the RAR sent by the relay device.

For a detailed description of step 502, refer to the description of step 302 in the embodiment corresponding to FIG. 3, which will not be repeated here.

503. The UE sends a third connection resume request RRC connection resume request to the relay device, and correspondingly, the relay device receives the third connection resume request RRC connection resume request sent by the UE.

For a detailed description of step 503, refer to the description of step 303 in the embodiment corresponding to FIG. 3, which will not be repeated here.

504. The relay device sends a third connection resume request RRC connection resume request to the network device access network device, and correspondingly, the access network device receives the third connection resume request RRC connection resume request sent by the relay device.

In the embodiment of this application, after receiving the third connection resume request RRC connection resume request sent by the UE, the relay device may send the third connection resume request RRC connection resume request to the network device access network device.

505. The access network device sends a first connection setup message RRC connection setup to the relay device, and correspondingly, the relay device receives the first connection setup message RRC connection setup sent by the access network device.

In the embodiment of this application, after the access network device receives the third connection resume request RRC connection resume request sent by the relay device, if the access network device cannot find the UE's resume ID and UE context information, or finds that the connection cannot be resumed, Or after the access network device is found to be overloaded, that is, the access network device cannot restore the RRC connection for the UE, the access network device may roll back the connection restoration process to the connection establishment process. Specifically, the access network device may reply to the third connection recovery request RRC connection setup message on SRB0, with functions such as a connection establishment process.

In an embodiment, the first connection setup message RRC connection setup may carry third radio resource configuration information. In this embodiment, the access network device receives the third connection recovery request RRC connection resume sent by the relay device. After the request, the third radio resource configuration information corresponding to the UE can be configured, and the third radio resource configuration information can be delivered to the relay device through the third connection recovery request RRC connection resume request.

506. The relay device determines second radio resource configuration information corresponding to the UE.

In the embodiment of the present application, after receiving the first connection setup message RRC connection setup sent by the access network device, the relay device may obtain the third radio resource configuration information carried therein.

In an embodiment, the relay device may determine fourth radio resource configuration information corresponding to the UE, and add the fourth radio resource configuration information to the third radio resource configuration information to obtain the second radio resource Configuration information.

In an embodiment, the relay device may determine the second wireless resource configuration information corresponding to the terminal device, and replace the third wireless resource configuration information with the second wireless resource configuration information.

In an embodiment, the relay device may modify at least one parameter configuration in the third radio resource configuration information to obtain the second radio resource configuration information.

In an embodiment, the relay device may determine that the second wireless resource configuration information is equal to the third wireless resource configuration information.

In the embodiment of this application, after the relay device receives the third wireless resource configuration information carrying the configuration of the access network device, if the relay device thinks that the configuration of the access network device is unreasonable, the relay device can add or modify the wireless resource configuration information. Resource configuration. In the scenario where the access network device establishes a connection with the UE through at least one relay device, because the access network device establishes a connection with the UE through at least one relay device, the access network device cannot accurately configure radio resources In this embodiment, the wireless resource configuration is performed by the relay device, which can perform the wireless resource configuration more accurately.

507. The relay device sends a second connection setup message RRC connection setup to the UE, and correspondingly, the UE receives a second connection setup message RRC connection setup sent by the relay device.

In this embodiment of the application, after the relay device determines the second radio resource configuration information corresponding to the UE, it may send a second connection setup message RRC connection setup to the UE, where the second connection setup message RRC connection setup carries the second connection setup message. Radio resource configuration information.

It should be noted that the second connection setup message RRC connection setup sent by the relay device to the UE may be scrambled by C-RNTI.

508. The UE sends a connection setup complete message RRC connection setup complete to the relay device, and correspondingly, the relay device receives the connection setup complete message RRC connection setup complete sent by the UE.

In the embodiment of this application, when the UE receives the second connection establishment message RRC connection setup as a response to the third connection recovery request RRC connection resume request, it discards the stored access stratum context and notifies the non-access stratum (non-access stratum). -access stratum, NAS) connection recovery in RRC has failed; UE configures according to the second connection establishment message RRC connection setup, and sends a connection setup complete message RRC connection setup complete on SRB1 to the relay device.

509. The relay device sends the connection setup complete message RRC connection setup complete to the access network device.

In the embodiment of this application, the terminal device UE sends a random access request RA request to the relay device, correspondingly, the relay device receives the RA request sent by the UE; the relay device sends a random access response RAR to the UE, correspondingly, The UE receives the RAR sent by the relay device; the UE sends the third connection resume request RRC connection resume request to the relay device, and correspondingly, the relay device receives the third connection resume request RRC connection resume request sent by the UE; the relay device Send a third connection resume request RRC connection resume request to the network device access network device, and correspondingly, the access network device receives the third connection resume request RRC connection resume request sent by the relay device; the access network device sends the request to the middle After the device sends the first connection setup message RRC connection setup, correspondingly, the relay device receives the first connection setup message RRC connection setup sent by the access network device; the relay device determines the second radio resource configuration information corresponding to the UE; After the device sends the second connection setup message RRC connection setup to the UE, the UE receives the second connection setup message RRC connection setup sent by the relay device; the UE sends the connection setup complete message RRC connection setup complete to the relay device, correspondingly Yes, the relay device receives the connection setup complete message RRC connection setup complete sent by the UE; the relay device sends the connection setup complete message RRC connection setup complete to the access network device. In the above manner, in the scenario where the network device establishes a connection with the terminal device through at least one relay device, the connection recovery fallback of the UE is realized, and the relay device receives the third radio resource carrying the configuration of the access network device After configuring the information, if the relay device thinks that the configuration of the access network device is unreasonable, the relay device can add or modify the radio resource configuration. In the scenario where the access network device establishes a connection with the UE through at least one relay device, because The access network device establishes a connection with the UE through at least one relay device, so the access network device cannot accurately configure radio resources. In this embodiment, the relay device performs radio resource configuration, which can more accurately perform radio resource configuration. Configuration.

The above is a detailed description of an embodiment in the scenario of connection restoration and fallback. Next, a detailed description of an embodiment of a data processing method in a scenario of successful connection re-establishment is described. FIG. 6 shows one of the embodiments of the present application. A schematic flow chart of the process of this data processing method. It should be understood that FIG. 6 shows the steps or operations of the data processing process, but these steps or operations are only examples, and the embodiment of the present application may also perform other operations or variations of each operation in FIG. 6. In addition, the various steps in FIG. 6 may be performed in a different order from that presented in FIG. 6, and it is possible that not all operations in FIG. 6 are to be performed.

601. The terminal device UE sends a random access request RA request to the relay device, and correspondingly, the relay device receives the RA request sent by the UE.

For a detailed description of step 601, please refer to the description of step 301 in the embodiment corresponding to FIG. 3, which is not repeated here.

602. The relay device sends a random access response RAR to the UE, and correspondingly, the UE receives the RAR sent by the relay device.

For a detailed description of step 602, refer to the description of step 302 in the embodiment corresponding to FIG. 3, which will not be repeated here.

603. The UE sends a connection reestablishment request RRC connection reestablishment request to the relay device, and correspondingly, the relay device receives the connection reestablishment request RRC connection reestablishment request sent by the UE.

In this embodiment of the application, after receiving the RAR sent by the relay device, the UE may send a connection reestablishment request RRC connection reestablishment request to the relay device.

604. The relay device sends a connection reestablishment request RRC connection reestablishment request to the access network device, and correspondingly, the access network device receives the connection reestablishment request RRC connection reestablishment request sent by the relay device.

In this embodiment of the application, after receiving the connection reestablishment request RRC connection reestablishment request sent by the UE, the relay device may send the connection reestablishment request RRC connection reestablishment request to the access network device.

605. The access network device sends a first connection reestablishment message RRC connection reestablishment to the relay device, and correspondingly, the relay device receives the first connection reestablishment message RRC connection reestablishment sent by the access network device.

In an embodiment, the first connection reestablishment message RRC connection reestablishment may carry third radio resource configuration information. In this embodiment, the access network device receives the connection reestablishment request RRC connection reestablishment request sent by the relay device. , The third radio resource configuration information corresponding to the UE can be configured, and the third radio resource configuration information can be delivered to the relay device through the first connection reestablishment message RRC connection reestablishment.

606. The relay device determines second radio resource configuration information corresponding to the UE.

In the embodiment of the present application, after receiving the first connection reestablishment message RRC connection reestablishment sent by the access network device, the relay device may obtain the third radio resource configuration information carried therein.

607. The relay device sends a second connection reestablishment message RRC connection reestablishment to the UE, and correspondingly, the UE receives a second connection reestablishment message RRC connection reestablishment sent by the relay device.

608. The UE sends a connection reestablishment complete message RRC connection reestablishment complete to the relay device, and correspondingly, the relay device receives the connection reestablishment complete message RRC connection reestablishment complete sent by the UE.

609. The relay device sends the connection reestablishment complete message RRC connection reestablishment complete to the access network device, and correspondingly, the access network device receives the connection reestablishment complete message RRC connection reestablishment complete sent by the relay device.

In the embodiment of this application, the terminal device UE sends a random access request RA request to the relay device, correspondingly, the relay device receives the RA request sent by the UE; the relay device sends a random access response RAR to the UE, correspondingly, The UE receives the RAR sent by the relay device; the UE sends a connection reestablishment request RRC connection reestablishment request to the relay device, and correspondingly, the relay device receives the connection reestablishment request RRC connection reestablishment request sent by the UE; the relay device sends the connection reestablishment request to the access network. The device sends a connection reestablishment request RRC connection reestablishment request, and accordingly, the access network device receives the connection reestablishment request RRC connection reestablishment request sent by the relay device; the access network device sends the first connection reestablishment message RRC connection reestablishment to the relay device, Correspondingly, the relay device receives the first connection reestablishment message RRC connection reestablishment sent by the access network device; the relay device determines the second radio resource configuration information corresponding to the UE; the relay device sends the second connection reestablishment message RRC connection to the UE reestablishment, correspondingly, the UE receives the second connection reestablishment message RRC connection reestablishment sent by the relay device; the UE sends the connection reestablishment complete message RRC connection reestablishment complete to the relay device, and correspondingly, the relay device receives the connection reestablishment sent by the UE The completion message RRC connection reestablishment complete; the relay device sends the connection reestablishment complete message RRC connection reestablishment complete to the access network device, and correspondingly, the access network device receives the connection reestablishment complete message RRC connection reestablishment complete sent by the relay device. In the above manner, in a scenario where a network device establishes a connection with a terminal device through at least one relay device, the connection reestablishment of the UE is realized, and the relay device receives the third radio resource configuration information carrying the configuration of the access network device Later, if the relay device thinks that the configuration of the access network device is unreasonable, the relay device can add or modify the radio resource configuration. In the scenario where the access network device establishes a connection with the UE through at least one relay device, due to the access The network device establishes a connection with the UE through at least one relay device, so the access network device cannot accurately configure wireless resources. In this embodiment, the relay device performs wireless resource configuration, which can perform more accurate wireless resource configuration.

The above is a detailed description of an embodiment in a scenario where the connection re-establishment is successful. Next, an embodiment of a data processing method in a scenario where the connection re-establishment fails is described in detail. FIG. 7 shows one of the embodiments of the present application. A schematic flow chart of the process of this data processing method. It should be understood that FIG. 7 shows the steps or operations of the data processing process, but these steps or operations are only examples, and the embodiment of the present application may also perform other operations or variations of each operation in FIG. 6. In addition, the various steps in FIG. 7 may be performed in a different order from that presented in FIG. 7, and it is possible that not all operations in FIG. 7 are to be performed.

701. The terminal device UE sends a random access request RA request to the relay device, and correspondingly, the relay device receives the RA request sent by the UE.

For a detailed description of step 701, refer to the description of step 301 in the embodiment corresponding to FIG. 3, which will not be repeated here.

702. The relay device sends a random access response RAR to the UE, and correspondingly, the UE receives the RAR sent by the relay device.

For a detailed description of step 702, refer to the description of step 302 in the embodiment corresponding to FIG. 3, which will not be repeated here.

703. The UE sends a connection reestablishment request RRC connection reestablishment request to the relay device, and correspondingly, the relay device receives the connection reestablishment request RRC connection reestablishment request sent by the UE.

For a detailed description of step 703, refer to the description of step 603 in the embodiment corresponding to FIG. 6, which will not be repeated here.

704. The relay device sends a connection reestablishment request RRC connection reestablishment request to the access network device, and correspondingly, the access network device receives the connection reestablishment request RRC connection reestablishment request sent by the relay device.

For a detailed description of step 704, refer to the description of step 604 in the embodiment corresponding to FIG. 6, which will not be repeated here.

705. The access network device sends a connection reestablishment rejection message RRC connection reestablishment reject to the relay device, and correspondingly, the relay device receives the connection reestablishment rejection message RRC connection reestablishment reject sent by the access network device.

In the embodiment of this application, after the access network device receives the connection reestablishment request RRC connection reestablishment request sent by the relay device, if the UE verification fails or the UE context cannot be found, it may send a connection reestablishment rejection message RRC to the relay device connection reestablishment reject.

706. The relay device sends a connection reestablishment rejection message RRC connection reestablishment reject to the UE, and correspondingly, the UE receives the connection reestablishment rejection message RRC connection reestablishment reject sent by the relay device.

In this embodiment of the application, after receiving the connection reestablishment reject message RRC connection reestablishment reject sent by the access network device, the relay device may send the connection reestablishment reject message RRC connection reestablishment reject to the UE.

In the embodiment of this application, the terminal device UE sends a random access request RA request to the relay device, correspondingly, the relay device receives the RA request sent by the UE; the relay device sends a random access response RAR to the UE, correspondingly, The UE receives the RAR sent by the relay device; the UE sends a connection reestablishment request RRC connection reestablishment request to the relay device, and correspondingly, the relay device receives the connection reestablishment request RRC connection reestablishment request sent by the UE; the relay device sends the connection reestablishment request to the access network. The device sends a connection reestablishment request RRC connection reestablishment request, and correspondingly, the access network device receives the connection reestablishment request RRC connection reestablishment request sent by the relay device; the access network device sends a connection reestablishment rejection message RRC connection reestablishment reject to the relay device, Correspondingly, the relay device receives the connection reestablishment reject message RRC connection reestablishment reject sent by the access network device; the relay device sends the connection reestablishment reject message RRC connection reestablishment reject to the UE, and accordingly, the UE receives the connection sent by the relay device Reestablishment rejection message RRC connection reestablishment reject.

It should be noted that, after receiving the Msg 3 sent by the UE, the relay device may determine the first radio resource configuration information corresponding to the UE by itself, and send the first radio resource configuration information to the terminal device. The determined first resource configuration information may also be sent to the access network device, and sent by the access network device to the terminal device through the relay device.

In another embodiment, the relay device may also be unsure of the first resource configuration information first, and after receiving the Msg 4 or Msg 3 response message sent by the access network device, if there is no resource configuration information in the message, it may The first resource configuration information is determined and added, or if there is, the resource configuration information can be modified or supplemented.

The above is a detailed description of an embodiment in a scenario where the connection re-establishment fails. Next, an embodiment of a data processing method in a scenario where a relay device is overloaded is described in detail. FIG. 8a shows an embodiment of the present application. A schematic flow chart of the process of a data processing method. It should be understood that FIG. 8a shows the steps or operations of the data processing process, but these steps or operations are only examples, and the embodiment of the present application may also perform other operations or variations of each operation in FIG. 8a. In addition, the various steps in FIG. 8a may be performed in a different order from that presented in FIG. 8, and it is possible that not all operations in FIG. 8a are to be performed.

801. The relay device sends a second message to the access network device, where the second message is used to indicate that the relay device is overloaded, where the second message may include the proportion of the load that has been reached, the amount of data that has been buffered, or A single 1-bit overload indication, and/or, the second message includes the carrying capacity of the relay device, and the specific capacity includes the maximum number of terminals that can be connected, and the maximum number of terminals in the idle state supported by the relay, Maximum cache capacity and so on. Correspondingly, the access network device receives the second message sent by the relay device.

In the embodiment of the present application, if the relay device detects overload, or detects that it is about to be overloaded, it may send a second message to the access network device. The second message may indicate that the network device relay device is overloaded, or the first The second message includes the carrying capacity of the relay device. The access network device can determine whether the relay device is overloaded or will be overloaded according to the carrying capacity of the relay device.

802. The access network device sends a first message to the relay device, where the first message includes at least one access reason, and correspondingly, the relay device receives the first message sent by the access network device.

In the embodiment of this application, after the access network device receives the second message sent by the relay device, it is equivalent to knowing that a certain relay device has appeared or will be overloaded, and the access network device can determine at least one access Reason, for example, the reason for access can be but not limited to emergency call (emergency), high priority user (high priority access), called (mt-access), signaling (mo-signalling), calling (mo-signalling) -data) or delayed tolerant access (delay tolerant access).

In the embodiment of this application, the first message can carry emergency call (emergency), high priority user (high priority access), called (mt-access), signaling (mo-signalling), calling (mo-data) ) And one or more of delay tolerant access (delay tolerant access).

The first message may instruct the relay device to refuse the connection of the terminal device whose access reason belongs to the at least one access reason according to the first message, which is equivalent to implementing overload control of the relay device through the access network device.

803. The UE sends a random access request RA request to the relay device, and correspondingly, the relay device receives the RA request sent by the UE.

For a detailed description of step 803, refer to the description of step 301 in the embodiment corresponding to FIG. 3, which will not be repeated here.

804. The relay device sends a random access response RAR to the UE, and correspondingly, the UE receives the RAR sent by the relay device.

For a detailed description of step 804, reference may be made to the description of step 302 in the embodiment corresponding to FIG. 3, which will not be repeated here.

805. The UE sends a connection request Msg3 to the relay device, and correspondingly, the relay device receives the connection request Msg3 sent by the UE.

In this embodiment of the application, the connection request Msg3 may be, but is not limited to, the first connection recovery request RRC connection resume request described in the embodiment corresponding to FIG. 3 or FIG. 4, and the third connection recovery request described in the embodiment corresponding to FIG. 5 RRC connection resume request and one of the connection reestablishment request RRC connection reestablishment request described in the embodiment corresponding to FIG. 6.

In the embodiment of the present application, the connection request Msg3 may carry the access reason of the UE.

806. The relay device obtains the access reason of the UE.

In the embodiment of the present application, after receiving the connection request Msg3 sent by the UE, the relay device may obtain the access reason of the UE from the connection request Msg3.

807. If the access reason of the UE is one of the at least one access reason included in the first message, the relay device refuses to connect with the UE.

In the embodiment of the present application, since the relay device previously received the first message sent by the access network device, the relay device can traverse at least one access reason carried in the first message, if at least one access reason is carried in the first message. If the access reason carried in the connection request Msg3 is traversed in one access reason, the relay device refuses to connect with the UE. Specifically, the relay device may send a connection rejection message RRC connection reject to the UE.

In the embodiment of the present application, the relay device sends a second message to the access network device, the second message is used to indicate that the relay device is overloaded, or the second message includes the carrying capacity of the relay device Correspondingly, the access network device receives the second message sent by the relay device; the access network device sends a first message to the relay device, and the first message includes at least one access reason. Correspondingly, the relay device The first message sent by the access network device is received; the UE sends a random access request RA request to the relay device, and correspondingly, the relay device receives the RA request sent by the UE; the relay device sends a random access response RAR to the UE , Correspondingly, the UE receives the RAR sent by the relay device; the UE sends a connection request Msg3 to the relay device, and correspondingly, the relay device receives the connection request Msg3 sent by the UE; the relay device obtains the UE's access reason; if If the access reason of the UE is one of the at least one access reason included in the first message, the relay device refuses to connect with the UE. Through the above method, the overload control of the access network device can solve the overload problem of the relay device. Compared with the overload control of the relay device itself, the access network device can perform centralized control of the relay device to achieve load balancing.

It should be noted that, in another embodiment, the relay device can reject the access of the UE directly connected to it, and at the same time control the access of the UE on its child node (relay device), which will be described separately in the following.

Exemplarily, in the multi-hop relay scenario shown in FIG. 2, taking the relay device 3 detecting overload as an example, the detailed process of how the access network device performs overload control on the relay will be described. Next, The control strategy determined by the access network device and the control strategy executed by the relay device are described separately.

In the embodiment of the present application, in the multi-hop relay scenario shown in FIG. 2, when the network device (access network or core network) or the relay device is overloaded, the access network device may first determine the control strategy, such as Determine at least one access reason and an overload control strategy corresponding to each of the aforementioned at least one access reasons, where the overload control strategy may be to deny access to all terminal devices, or to deny a certain percentage of terminal devices Access, or deny access to a certain percentage of terminals with a certain reason value.

After that, the access network device may issue the aforementioned at least one access cause and the overload control policy corresponding to each of the aforementioned at least one access cause to the relay device that has overload.

In an embodiment, the relay device may execute the control strategy issued by the access network device.

In another embodiment, the relay device re-determines a control strategy according to the control strategy issued by the access network device, and delivers the re-determined control strategy to its child node (relay device), so that the child The node (relay device) executes the control strategy issued by the relay device.

Referring to Figure 8b, Figure 8b is a schematic diagram of an embodiment of a data processing method. Figure 8b shows that when the access network device determines that the control strategy is that the relay device rejects all UEs corresponding to at least one access reason. The situation when the device rejects all UEs corresponding to at least one access reason for direct connection.

In specific overload control related schemes, after the relay receives the control strategy, it controls the accessing UE according to the strategy. The access reason value is carried in Msg 3, which can include RRC connection request message and RRC connection reestablishment request message , RRC connection recovery request message.

811. The relay device 3 sequentially sends a second message to the access network device through the relay device 2 and the relay device 1, where the second message is used to indicate that the relay device is overloaded, or the second message Including the carrying capacity of the relay device.

The carrying capacity of the relay device includes at least one of the following capabilities: the maximum number of connected terminals, including the number of terminals in the connected state and the number of terminals in the idle state, the buffering capacity of the relay device, the processing capacity, and so on. 812. The access network device determines a control strategy. The control strategy is used to perform access control on one or more cause values, for example, "Relay device 3 refuses access because the reason is called (mt-access) and signaling ( mo-signalling) all UE access".

In this embodiment, the access network device may determine that the relay device is overloaded according to the overload indication sent by the relay device or according to the bearer capacity of the relay, and send overload control information to the relay device.

813. The access network device may send the first message carrying the two access reasons of the called (mt-access) and the signaling (mo-signalling) to the relay device through the relay device 1 and the relay device 2 in turn. 3.

814. The relay device 3 refuses access to all UEs whose access reasons are called (mt-access) and signaling (mo-signalling).

In this embodiment, the relay device 3 sends the second message to the access network device; the access network device determines the control strategy; the access network device sends the first message to the relay device 3; the relay device 3 refuses to connect with All UEs access the access reason specified by the connected device. Through the above method, the overload control of the access network device to the relay device is realized.

Referring to Figure 8c, Figure 8c is a schematic diagram of an embodiment of a data processing method. Figure 8c shows when the access network device determines that the control strategy is that the relay device rejects all UEs corresponding to at least one access reason. The situation when the device instructs its child nodes to reject all UEs corresponding to at least one access reason.

821. The relay device 3 sends a second message to the access network device through the relay device 2 and the relay device 1 in turn, the second message is used to indicate that the relay device is overloaded, or the second message Including the carrying capacity of the relay device.

822. The access network device determines the control strategy to perform access control on a certain cause value, for example, "relay device 3 refuses to access all UEs whose reason is called (mt-access) and signaling (mo-signalling). Into".

823. The access network device sends the first message carrying the two access reasons (mt-access) and signaling (mo-signalling) to the relay device 3 through the relay device 1 and the relay device 2 in turn. .

824. The relay device 3 determines that the control policy is "relay device 6 refuses to access all UEs whose access reasons are called (mt-access) and signaling (mo-signalling)".

825. The relay device 3 sends to the relay device 6 a first message carrying two access reasons (mt-access) and signaling (mo-signalling).

826. The relay device 6 rejects all UEs whose access reasons are called (mt-access) and signaling (mo-signalling).

In this embodiment, the relay device 3 sends the second message to the access network device; the access network device determines the control strategy; the access network device sends the first message to the relay device 3; the relay device 3 determines the control strategy The relay device 3 sends the first message to the relay device 6; the relay device 6 rejects the UE access corresponding to the access reason specified by the relay device 3. Through the above method, the overload control through the access network device and the relay device is realized. Since the relay device 6 is a child node of the relay device 3, it can also be solved by controlling the relay device 6 to execute the operation of denying terminal access. Overload problem of relay device 3.

In another embodiment, the access network device determines that the control strategy is that the relay device denies access to part of the UE corresponding to at least one access cause, and the relay device denies access to part of the UE corresponding to at least one access cause of the direct connection. . That is, when the base station sends the overload control instruction, it also sends the access control ratio, which can be a certain percentage of all cause values, or the access control ratio of a certain cause value.

In another embodiment, after the relay device determines that it is overloaded, the relay specifies a control strategy and sends instruction information to the child node. The control strategy can be as described in other embodiments. After the child node receives it, it can also send it to the child node. The node sends control information until the last node.

Exemplarily, the relay device 3 may send a second message to the access network device through message forwarding of the relay device 2 and the relay device 1 in turn, and the second message is used to indicate that the relay device is overloaded. Or, the second message includes the bearer capability of the relay device.

The access network device determines the control strategy as "the reason why the relay device 3 refuses to access is a certain ratio of the called (mt-access) and the signaling (mo-signalling), such as 80% of UE access."

The access network device may send a first message carrying two access reasons (mt-access) and signaling (mo-signalling) to the relay device 3 through the relay device 1 and the relay device 2 in turn.

The relay device 3 refuses to access 80% of UEs whose access reasons are called (mt-access) and signaling (mo-signalling).

The difference from the embodiment corresponding to Fig. 8b is that in this embodiment, the relay device 3 does not deny access to all UEs whose access reasons are called (mt-access) and signaling (mo-signalling), but only denies access. part of it.

Specifically, the relay device 3 can randomly select two terminal devices among ten terminal devices whose access reasons are called (mt-access) and signaling (mo-signalling) to reject. The relay device is not limited here. 3 options.

In another embodiment, the access network device determines that the control strategy is that the relay device denies access to some UEs corresponding to at least one access cause, and the relay device instructs its child nodes to reject some UE accesses corresponding to at least one access cause. Into.

The access network device determines the control strategy to perform access control on a certain cause value, for example, "The reason why the relay device 3 refuses to access is a certain ratio of the called (mt-access) and the signaling (mo-signalling), such as 80% of UE access."

The relay device 3 determines the control strategy as "the reason why the relay device 6 refuses to access is a certain ratio of the called (mt-access) and the signaling (mo-signalling), such as 80% of UE access."

The relay device 3 sends to the relay device 6 a first message carrying two access reasons (mt-access) and signaling (mo-signalling).

The relay device 6 refuses to access 80% of UEs whose access reasons are called (mt-access) and signaling (mo-signalling).

or,

The difference from the embodiment corresponding to Fig. 8c is that in this embodiment, the relay device 6 does not deny access to all UEs whose access reasons are called (mt-access) and signaling (mo-signalling), but only denies access. part of it.

Specifically, the relay device 3 may randomly select two terminal devices from ten terminal devices whose access reasons are called (mt-access) and signaling (mo-signalling) to reject. The relay device is not limited here. 3 options.

Referring to Figure 8d, Figure 8d is a schematic diagram of an embodiment of a data processing method. Figure 8d shows when the access network device determines that the control strategy is that the relay device rejects all UEs corresponding to at least one access reason. The device instructs its child nodes to reject all UEs corresponding to at least one access reason, and the relay device rejects all UEs corresponding to at least one access reason directly connected.

831. The relay device 3 sends a second message to the access network device through the relay device 2 and the relay device 1 in turn, where the second message is used to indicate that the relay device is overloaded, or the second message Including the carrying capacity of the relay device.

832. The access network device determines a control strategy to perform access control on a certain cause value, for example, "relay device 3 refuses to access all UEs whose reason is called (mt-access) and signaling (mo-signalling). Into".

833. The access network device sends the first message carrying the two access reasons of called (mt-access) and signaling (mo-signalling) to the relay device 3 through the relay device 1 and the relay device 2 in turn. .

834. The relay device 3 refuses access to all UEs whose access reasons are called (mt-access) and signaling (mo-signalling).

835. The relay device 3 determines a control policy to perform access control on a certain cause value, for example, "relay device 6 refuses to access all UEs whose reason is called (mt-access) and signaling (mo-signalling). Into".

836. The relay device 3 sends a third message carrying two access reasons (mt-access) and signaling (mo-signalling) to the relay device 6.

837. The relay device 6 rejects all UEs whose access reasons are called (mt-access) and signaling (mo-signalling).

In another embodiment, the access network device determines that the control strategy is that the relay device denies access to some UEs corresponding to at least one access cause, and the relay device instructs its child nodes to reject some UE accesses corresponding to at least one access cause. And the relay device refuses to access part of the UEs corresponding to at least one access reason directly connected.

The relay device 3 determines the control strategy to perform access control on a certain reason value, for example, "The reason why the relay device 6 refuses to access is a certain ratio of the called (mt-access) and the signaling (mo-signalling), such as 80% of UE access."

The relay device 3 sends to the relay device 6 a third message carrying two access reasons (mt-access) and signaling (mo-signalling).

The difference from the embodiment corresponding to FIG. 8d is that in this embodiment, the relay device 3 and the relay device 6 are not all UEs whose access reasons are called (mt-access) and signaling (mo-signalling). Enter, but only reject part of it.

The above is a detailed description of an embodiment in a scenario where a relay device is overloaded. Next, a detailed description will be given of an embodiment of a data processing method in a scenario where the access network device is overloaded. FIG. 9 shows this A schematic flowchart of the process of a data processing method in the application embodiment. It should be understood that FIG. 9 shows the steps or operations of the data processing process, but these steps or operations are only examples, and the embodiment of the present application may also perform other operations or variations of each operation in FIG. 9. In addition, each step in FIG. 9 may be performed in a different order from that presented in FIG. 9, and it is possible that not all operations in FIG. 9 are to be performed.

901. The access network device sends a first message to the relay device, where the first message includes at least one access reason, and correspondingly, the relay device receives the first message sent by the access network device.

In an embodiment, when the access network device detects that it is overloaded or is about to be overloaded, it may send the first message to the relay device.

In an embodiment, if the access network device receives the overload control instruction of the core network device, it may send the first message to the relay device.

In an embodiment, the access network device can also detect that the relay device is overloaded or about to be overloaded. Unlike the embodiment corresponding to FIG. 8a, in this embodiment, the relay device does not need to communicate to the access network. The device sends the second message, and the access network device can detect the overload condition on the relay device with which it is connected, and then directly send the first message to the relay device.

902. The UE sends a random access request RA request to the relay device, and correspondingly, the relay device receives the RA request sent by the UE.

For a detailed description of step 902, refer to the description of step 301 in the embodiment corresponding to FIG. 3, which will not be repeated here.

903. The relay device sends a random access response RAR to the UE, and correspondingly, the UE receives the RAR sent by the relay device.

For a detailed description of step 903, refer to the description of step 302 in the embodiment corresponding to FIG. 3, which will not be repeated here.

904. The UE sends a connection request Msg3 to the relay device, and correspondingly, the relay device receives the connection request Msg3 sent by the UE.

For a detailed description of step 904, refer to the description of step 805 in the embodiment corresponding to FIG. 8a, which will not be repeated here.

905. The relay device obtains the access reason of the UE.

For a detailed description of step 905, refer to the description of step 806 in the embodiment corresponding to FIG. 8a, which will not be repeated here.

906. If the access reason of the UE is one of the at least one access reason included in the first message, the relay device refuses to connect with the UE.

For a detailed description of step 906, refer to the description of step 807 in the embodiment corresponding to FIG. 8a, which is not repeated here.

In this embodiment, the access network device sends a first message to the relay device, the first message includes at least one access reason, and correspondingly, the relay device receives the first message sent by the access network device; the UE sends The relay device sends a random access request RA request, and correspondingly, the relay device receives the RA request sent by the UE; the relay device sends a random access response RAR to the UE, and accordingly, the UE receives the RAR sent by the relay device; The UE sends a connection request Msg3 to the relay device, and correspondingly, the relay device receives the connection request Msg3 sent by the UE; the relay device obtains the UE's access reason; if the UE's access reason is the one included in the first message If at least one of the access reasons is one of the access reasons, the relay device refuses to connect with the UE. Through the above method, the problem of overload control when the access network device is overloaded in the scenario where the access network device is connected to the UE through at least one relay device is solved.

Based on the same technical concept, the embodiment of the present application also provides a relay device. Fig. 10 exemplarily shows the structure of the relay device. The relay device may include:

The receiving unit 1001 is configured to receive a first message sent by a network device, where the first message includes at least one access reason;

The sending unit 1003 is configured to refuse connection of a terminal device whose access reason belongs to the at least one access reason according to the first message.

Optionally, the sending unit 1003 is further configured to send a second message to the network device, where the second message is used to indicate that the relay device is overloaded, or the second message includes the relay The carrying capacity of the equipment.

Optionally, the bearer capability includes the maximum number of terminals supported, wherein the terminal in the maximum number of terminals supported is at least one of a terminal in a connected state and a terminal in an idle state.

Optionally, the receiving unit 1001 is further configured to: receive an access request sent by the first terminal device;

The relay device further includes: a processing unit 1002;

The processing unit 1002 is configured to obtain the access reason of the first terminal device;

If the access reason of the first terminal device is one of the at least one access reason included in the first message, the sending unit 1003 is further configured to refuse to connect with the first terminal device .

Optionally, the receiving unit 1001 is further configured to: receive the first connection recovery request sent by the second terminal device;

The processing unit 1002 is further configured to determine the first radio resource configuration information corresponding to the second terminal device;

The sending unit 1003 is further configured to send a second connection recovery request to the network device, where the second connection recovery request carries the first wireless resource configuration information.

Optionally, the receiving unit 1001 is further configured to receive a connection recovery message sent by the network device.

Optionally, the second connection restoration request carries the terminal identification of the terminal device, and the connection restoration message carries the terminal identification.

Optionally, the receiving unit 1001 is further configured to receive a connection rejection message sent by the network device;

The sending unit 1003 is further configured to send the connection rejection message to the second terminal device.

Optionally, the receiving unit 1001 is further configured to receive the first request sent by the third terminal device;

The sending unit 1003 is further configured to send the first request to the network device;

The receiving unit 1001 is further configured to receive a third message sent by the network device;

The processing unit 1002 is further configured to determine second radio resource configuration information corresponding to the third terminal device;

The sending unit 1003 is further configured to send a fourth message to the third terminal device, where the fourth message carries the second radio resource configuration information.

Optionally, the third message carries third radio resource configuration information;

The processing unit 1002 is specifically configured to:

Optionally, the first request is a third connection recovery request;

The third message is a first connection establishment message;

The fourth message is a second connection establishment message.

Optionally, the receiving unit 1001 is further configured to receive a connection setup complete message sent by the third terminal device;

The sending unit 1003 is further configured to send the connection setting complete message to the network device.

Optionally, the first request is a connection re-establishment request;

The third message is a first connection re-establishment message;

The fourth message is a second connection re-establishment message.

Optionally, the receiving unit 1001 is further configured to receive a connection re-establishment complete message sent by the third terminal device;

The sending unit 1003 is further configured to send the connection re-establishment complete message to the network device.

Based on the same technical concept, the embodiment of the present application also provides another relay device. Fig. 11 exemplarily shows the structure of the relay device. The relay device may include:

The receiving unit 1001 is configured to: receive the first connection recovery request sent by the second terminal device;

The processing unit 1002 is configured to determine the first wireless resource configuration information corresponding to the second terminal device;

The sending unit 1003 is configured to send a second connection recovery request to the network device, where the second connection recovery request carries the first wireless resource configuration information.

In a design of this application, the receiving unit 1001 is further configured to receive a connection recovery message sent by the network device.

In a design of the present application, the receiving unit 1001 is further configured to receive a connection rejection message sent by the network device;

The receiving unit 1101 is configured to receive the first request sent by the third terminal device;

The sending unit 1103 is configured to send the first request to the network device;

The receiving unit 1101 is further configured to receive a third message sent by the network device;

The processing unit 1102 is configured to determine second wireless resource configuration information corresponding to the third terminal device;

The sending unit 1103 is further configured to send a fourth message to the third terminal device, where the fourth message carries the second radio resource configuration information.

The processing unit 1102 is specifically configured to:

The third message is a first connection establishment message;

The fourth message is a second connection establishment message.

In a design of the present application, the receiving unit 1101 is further configured to receive a connection setup complete message sent by the third terminal device;

The sending unit 1103 is further configured to send the connection setting complete message to the network device.

The third message is a first connection re-establishment message;

The fourth message is a second connection re-establishment message.

In a design of the present application, the receiving unit 1101 is further configured to receive a connection re-establishment complete message sent by the third terminal device;

The sending unit 1103 is further configured to send the connection re-establishment complete message to the network device.

Based on the same technical concept, the embodiment of the present application also provides a network device. Fig. 12 exemplarily shows the structure of the network device. The network equipment may include:

The sending unit 1202 is configured to send a first message to the relay device, where the first message includes at least one access reason, so that the relay device refuses access according to the first message and belongs to the at least one access reason The terminal device is connected for the reason.

It should be noted that the network device may further include a processing unit 1203, configured to generate the first message.

In a design of the present application, the network device further includes: a receiving unit 1201;

The receiving unit 1201 is configured to receive a second message sent by the relay device, the second message is used to indicate that the relay device is overloaded, or the second message includes the relay device's Carrying capacity.

In a design of the present application, the receiving unit 1201 is further configured to receive a second connection recovery request sent by the relay device, and the second connection recovery request carries the first connection recovery request determined by the relay device. 1. Radio resource configuration information.

In a design of this application, the sending unit 1202 is further configured to send a connection recovery message to the relay device.

In a design of the present application, the sending unit 1202 is further configured to send a connection rejection message to the relay device, so that the relay device sends the connection rejection message to the second terminal device.

In a design of the present application, the receiving unit 1201 is further configured to receive the first request sent by the relay device;

The sending unit 1202 is further configured to send a third message to the relay device, so that the relay device determines the second wireless resource configuration information corresponding to the third terminal device and sends a portable message to the third terminal device. There is a fourth message of the second radio resource configuration information.

The third message is a first connection establishment message;

The fourth message is a second connection establishment message.

In a design of the present application, the receiving unit 1201 is further configured to receive a connection setup complete message sent by the relay device.

The third message is a first connection re-establishment message;

The fourth message is a second connection re-establishment message.

In a design of the present application, the receiving unit 1201 is further configured to receive a connection re-establishment complete message sent by the relay device.

The receiving unit 1201 is configured to receive a second connection recovery request sent by the relay device, where the second connection recovery request carries the first wireless resource configuration information determined by the relay device.

In a design of the present application, the network device further includes a sending unit 1202, which is further configured to send a connection recovery message to the relay device.

The receiving unit 1201 is configured to receive the first request sent by the relay device;

The sending unit 1202 is configured to send a third message to the relay device, so that the relay device determines the second wireless resource configuration information corresponding to the third terminal device and sends to the third terminal device the The fourth message of the second radio resource configuration information.

The third message is a first connection establishment message;

The fourth message is a second connection establishment message.

The third message is a first connection re-establishment message;

The fourth message is a second connection re-establishment message.

The receiving unit 1001, the receiving unit 1101, the receiving unit 1201, the sending unit 1003, the sending unit 1103, and the sending unit 1202 in the embodiments of the present application can be implemented by transceivers, and the processing unit 1002, the processing unit 1102, and the processing unit 1203 can be implemented by processors. achieve. As shown in FIG. 13, the relay device 1300 may include a transceiver 1310, a processor 1320, and a memory 1330. Among them, the memory 1330 may be used to store instruction information, and may also be used to store codes and instructions executed by the processor 1320.

It should be understood that the processor 1320 or the processor 1320 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present invention may be directly embodied as being executed and completed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory 1330 in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchronous link DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DRRAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

FIG. 14 shows a communication system 1400 according to an embodiment of the present application. The communication system 1400 includes: a terminal device 1401, at least one relay device 1402, and a network device 1403.

The relay device 1402 may be the relay device in the embodiment shown in FIGS. 10 and 11, and the network device 1403 may be the network device in the embodiment shown in FIG.

The embodiments of the present application also provide a computer storage medium, and the computer storage medium can store program instructions for indicating any of the above methods.

Optionally, the storage medium may specifically be the memory 1330

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part.

The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present invention are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server, or data center via wired (for example, coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server or data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of this application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, a person of ordinary skill in the art should understand that: The technical solutions recorded in the embodiments are modified, or some of the technical features are equivalently replaced; these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

A data processing method, characterized by comprising:

The relay device receives a first message sent by the network device, where the first message includes at least one access reason;

The relay device rejects, according to the first message, the connection of the terminal device whose access reason belongs to the at least one access reason.
The method of claim 1, wherein the method further comprises:

The relay device sends a second message to the network device, where the second message is used to indicate that the relay device is overloaded, or the second message includes the bearer capability of the relay device.
The method according to claim 2, wherein the carrying capacity comprises a maximum number of terminals supported, wherein the terminal in the maximum number of terminals supported is at least one of a connected terminal and an idle terminal One.
The method according to claims 1 to 3, wherein the method further comprises:

The relay device receives the access request sent by the first terminal device;

Acquiring, by the relay device, the access reason of the first terminal device;

If the access reason of the first terminal device is one of the at least one access reason included in the first message, the relay device refuses to connect with the first terminal device.
The method according to any one of claims 1 to 4, wherein the access reason of the first terminal device is carried in one of an RRC connection request message, an RRC connection recovery request message, and an RRC connection reestablishment request message in.
The method according to any one of claims 1 to 5, wherein the method further comprises:

The relay device receives the first connection recovery request sent by the second terminal device;

Determining, by the relay device, first wireless resource configuration information corresponding to the second terminal device;

The relay device sends a second connection recovery request to the network device, where the second connection recovery request carries the first wireless resource configuration information.
The method according to claim 6, wherein the method further comprises:

The relay device receives the connection recovery message sent by the network device.
The method according to claim 7, wherein the second connection recovery request carries a terminal identification of the terminal device, and the connection recovery message carries the terminal identification.
The method according to claim 6, wherein the method further comprises:

The relay device receives a connection rejection message sent by the network device;

The relay device sends the connection rejection message to the second terminal device.
The method according to any one of claims 1 to 5, wherein the method further comprises:

The relay device receives the first request sent by the third terminal device;

Sending, by the relay device, the first request to the network device;

The relay device receives the third message sent by the network device;

Determining, by the relay device, second radio resource configuration information corresponding to the third terminal device;

The relay device sends a fourth message to the third terminal device, where the fourth message carries the second radio resource configuration information.
The method according to claim 10, wherein the third message carries third radio resource configuration information;

The determining, by the relay device, of the second radio resource configuration information corresponding to the third terminal device includes:

Determining, by the relay device, fourth radio resource configuration information corresponding to the third terminal device;

The relay device adds the fourth wireless resource configuration information to the third wireless resource configuration information to obtain the second wireless resource configuration information; or,

Determining, by the relay device, second radio resource configuration information corresponding to the third terminal device;

The relay device replaces the third wireless resource configuration information with the second wireless resource configuration information.
The method according to claim 10 or 11, wherein the first request is a third connection recovery request;

The third message is a first connection establishment message;

The fourth message is a second connection establishment message.
The method of claim 12, wherein the method further comprises:

The relay device receives the connection establishment complete message sent by the third terminal device;

The relay device sends the connection establishment complete message to the network device.
The method according to claim 10 or 11, wherein the first request is a connection re-establishment request;

The third message is a first connection re-establishment message;

The fourth message is a second connection re-establishment message.
A data processing method, characterized by comprising:

The network device sends a first message to the relay device, where the first message includes at least one access reason, so that the relay device refuses access to a terminal whose reason belongs to the at least one access reason according to the first message Device connection.
The method according to claim 15, wherein the method further comprises:

The network device receives a second message sent by the relay device, the second message is used to indicate that the relay device is overloaded, or the second message includes the bearer capability of the relay device.
The method according to claim 16, wherein the bearer capability comprises a maximum number of terminals supported, wherein the terminal in the maximum number of terminals supported is at least one of a connected terminal and an idle terminal One.
The method according to any one of claims 15 to 17, wherein:

The access reason of the first terminal device is carried in one of the RRC connection request message, the RRC connection recovery request message, and the RRC connection reestablishment request message.
The method according to any one of claims 15 to 18, wherein the method further comprises:

The network device receives a second connection recovery request sent by the relay device, and the second connection recovery request carries the first wireless resource configuration information determined by the relay device.
The method of claim 19, wherein the method further comprises:

The network device sends a connection recovery message to the relay device.
The method according to claim 20, wherein the second connection restoration request carries a terminal identification of the terminal device, and the connection restoration message carries the terminal identification.
The method of claim 19, wherein the method further comprises:

The network device sends a connection rejection message to the relay device, so that the relay device sends the connection rejection message to the second terminal device.
The method according to any one of claims 15 to 18, wherein the method further comprises:

The network device receives the first request sent by the relay device;

The network device sends a third message to the relay device, so that the relay device determines the second radio resource configuration information corresponding to the third terminal device and sends to the third terminal device the second message The fourth message of the radio resource configuration information.
The method according to claim 23, wherein the first request is a third connection recovery request;

The third message is a first connection establishment message;

The fourth message is a second connection establishment message.
The method of claim 23, wherein the method further comprises:

The network device receives the connection setup complete message sent by the relay device.
The method of claim 25, wherein the method further comprises:

The network device receives the connection re-establishment complete message sent by the relay device.
A wireless communication device having instructions stored in the wireless communication device, characterized in that, when the wireless communication device is running on a relay device, the relay device is caused to execute any one of claims 1-14 The method described.
A wireless communication device having instructions stored in the wireless communication device, characterized in that, when the wireless communication device is running on a network device, the network device is caused to execute any one of claims 15-26 method.
A computer-readable storage medium in which instructions are stored, characterized in that:

When the computer-readable storage medium runs on a relay device, the relay device is caused to execute the method according to any one of claims 1-14.
A computer-readable storage medium in which instructions are stored, characterized in that:

When the computer-readable storage medium runs on a network device, the network device is caused to execute the method of any one of claims 15-26.