WO2024060932A1 - Network registration method and apparatus, information transmission method and apparatus, and communication device - Google Patents

Abstract

The present invention relates to the technical field of communications, and provides a network registration method and apparatus, an information transmission method and apparatus, and a communication device. The network registration method is performed by a core network node and comprises: receiving first information sent by a first relay node, the first information comprising a registration request of a terminal and identifier information of a second relay node, and the second relay node being a node through which the terminal passes before being connected to the first relay node; and on the basis of the identifier information of the second relay node, determining whether to accept the registration request of the terminal.

Description

Network registration, information transmission methods, devices and communication equipment

Cross-references to related applications

This disclosure claims priority to Chinese Patent Application No. 202211170959.0 filed in China on September 23, 2022, the entire content of which is incorporated herein by reference.

Technical field

The present disclosure relates to the field of communication technology, and in particular to a network registration, information transmission method, device and communication equipment.

Background technique

In a network scenario that supports user equipment (User Equipment, UE, which can also be called a terminal) relay access through a mobile base station based on the Integrated Access and Backhaul (IAB) architecture, the mobile base station serves as an IAB node (IAB node), the terminal needs to go through a two-step registration method when accessing the IAB node. However, the relevant technology does not pay attention to whether the terminal can access a specific IAB node, and the reliability of communication cannot be guaranteed.

Contents of the invention

Embodiments of the present disclosure provide a network registration, information transmission method, device and communication equipment to perform access control on a terminal to achieve the purpose of controlling access to the terminal.

In order to solve the above technical problems, embodiments of the present disclosure provide an information transmission method, which is executed by a terminal. The method includes:

Obtain identification information of a second relay node, which is the node through which the terminal passes before connecting to the first relay node;

A non-access layer NAS message is sent to the first relay node through the second relay node, where the NAS message includes a terminal registration request and identification information of the second relay node.

Optionally, the obtaining the identification information of the second relay node includes one of the following:

Receive a broadcast message from the second relay node, where the broadcast message carries identification information of the second relay node;

Determine the identification information of the second relay node according to the identification information of the relay node that allows the terminal to access and the broadcast message of the relay node;

Based on the preconfigured identification information of the relay node that the terminal can access, the identification information of the second relay node is obtained.

Optionally, sending the non-access layer NAS message to the first relay node through the second relay node includes:

If the terminal obtains the identification information of the relay node that allows the terminal to access, when receiving the broadcast message of the second relay node, encapsulates the identification information of the second relay node in the NAS message;

The NAS message is sent to the first relay node through the second relay node.

Optionally, when receiving a broadcast message from a second relay node, encapsulating the identification information of the second relay node in a NAS message includes:

When receiving the broadcast message from the second relay node, determine whether the network can be accessed through the second relay node;

When it is determined that the network can be accessed through the second relay node, the identification information of the second relay node is encapsulated in the NAS message.

Optionally, the method also includes:

Receive a registration acceptance message sent by the core network node. The registration acceptance message is sent by the core network node when it determines to accept the registration request of the terminal. The registration acceptance message carries the information of the relay node that allows the terminal to access. Identification information.

Optionally, the method also includes:

Receive a registration rejection message sent by the core network node. The registration rejection message is sent by the core network node when it determines that it does not accept the terminal's registration request. The registration rejection message carries a relay node that allows the terminal to access. identification information.

Embodiments of the present disclosure also provide a network registration method, which is executed by a core network node. The method includes:

Receive the first information sent by the first relay node, the first information including the registration request of the terminal and the identification information of the second relay node, and the second relay node connects the terminal to the first The nodes that the relay node passes through before;

Based on the identification information of the second relay node, it is determined whether to accept the registration request of the terminal.

Optionally, determining whether to accept the terminal's registration request based on the identification information of the second relay node includes:

It is determined whether to accept the registration request of the terminal according to the indication information of whether the terminal is allowed to access the network through the second relay node and the identification information of the second relay node.

Optionally, after determining whether to accept the terminal's registration request based on the identification information of the second relay node, the method further includes:

In the case where it is determined that the registration request of the terminal is not accepted, a registration rejection message is sent to the terminal, where the registration rejection message carries identification information of the relay node that the terminal is allowed to access.

Optionally, after determining whether to accept the terminal's registration request based on the identification information of the second relay node, the method further includes:

If it is determined that the registration request of the terminal is accepted, a registration acceptance message is sent to the terminal.

An embodiment of the present disclosure also provides an information transmission method, which is executed by the first relay node. The method includes:

Receive a non-access layer NAS message sent by the terminal through the second relay node, where the NAS message carries the registration request of the terminal;

According to the NAS message, the first information is sent to the core network node, the first information includes the registration request of the terminal and the identification information of the second relay node, and the second relay node is connected to the terminal. The node passed before reaching the first relay node.

Optionally, sending the first information to the core network node includes:

If the NAS message also carries the identification information of the second relay node, forward the NAS message to the core network node, and the NAS message includes the first information; or

Obtain the identification information of the second relay node and send the first information to the core network node.

An embodiment of the present disclosure also provides a terminal, including a memory, a transceiver, and a processor;

Memory, used to store computer programs; transceiver, used to send and receive data under the control of the processor; processor, used to read the computer program in the memory and perform the following operations:

Obtain identification information of a second relay node, which is the node through which the terminal passes before connecting to the first relay node;

A non-access layer NAS message is sent to the first relay node through the second relay node, where the NAS message includes a terminal registration request and identification information of the second relay node.

Optionally, the processor is configured to read the computer program in the memory and perform one of the following operations:

Receive a broadcast message from the second relay node, where the broadcast message carries identification information of the second relay node;

Determine the identification information of the second relay node according to the identification information of the relay node that allows the terminal to access and the broadcast message of the relay node;

Based on the preconfigured identification information of the relay node that the terminal can access, the identification information of the second relay node is obtained.

Optionally, the processor is used to read the computer program in the memory and perform the following operations:

If the terminal obtains the identification information of the relay node that allows the terminal to access, when receiving the broadcast message of the second relay node, encapsulates the identification information of the second relay node in the NAS message;

The NAS message is sent to the first relay node through the second relay node.

Optionally, the processor is used to read the computer program in the memory and perform the following operations:

When receiving the broadcast message from the second relay node, determine whether the network can be accessed through the second relay node;

When it is determined that the network can be accessed through the second relay node, the identification information of the second relay node is encapsulated in the NAS message.

Optionally, the processor, used to read the computer program in the memory, also performs the following operations:

Receive a registration acceptance message sent by the core network node. The registration acceptance message is sent by the core network node when it determines to accept the registration request of the terminal. The registration acceptance message carries the information of the relay node that allows the terminal to access. Identification information.

Optionally, the processor, used to read the computer program in the memory, also performs the following operations:

Receive a registration rejection message sent by the core network node. The registration rejection message is sent by the core network node when it determines that it does not accept the terminal's registration request. The registration rejection message carries a relay node that allows the terminal to access. identification information.

Embodiments of the present disclosure also provide a core network node, including a memory, a transceiver, and a processor;

Memory, used to store computer programs; transceiver, used to send and receive data under the control of the processor; processor, used to read the computer program in the memory and perform the following operations:

Receive the first information sent by the first relay node, the first information including the registration request of the terminal and the identification information of the second relay node, and the second relay node connects the terminal to the first The nodes that the relay node passes through before;

Based on the identification information of the second relay node, it is determined whether to accept the registration request of the terminal.

Optionally, the processor is used to read the computer program in the memory and perform the following operations:

Whether to accept the registration request of the terminal is determined according to the indication information of whether to allow the terminal to access the network through the second relay node and the identification information of the second relay node.

Optionally, the processor, used to read the computer program in the memory, also performs the following operations:

When it is determined that the registration request of the terminal is not accepted, a registration rejection message is sent to the terminal, where the registration rejection message carries identification information of the relay node that allows the terminal to access.

Optionally, the processor, used to read the computer program in the memory, also performs the following operations:

When it is determined that the terminal's registration request is accepted, a registration acceptance message is sent to the terminal.

An embodiment of the present disclosure also provides a relay node, where the relay node is a first relay node and includes a memory, a transceiver, and a processor;

Memory, used to store computer programs; transceiver, used to send and receive data under the control of the processor; processor, used to read the computer program in the memory and perform the following operations:

Receive a non-access layer NAS message sent by the terminal through the second relay node, where the NAS message carries the registration request of the terminal;

According to the NAS message, first information is sent to the core network node, where the first information includes a registration request of the terminal and identification information of the second relay node, and the second relay node is the The terminal is connected to the node through which the first relay node passes before.

Optionally, the processor is used to read the computer program in the memory and perform the following operations:

If the NAS message also carries the identification information of the second relay node, forward the NAS message to the core network node, and the NAS message includes the first information; or

Obtain the identification information of the second relay node and send the first information to the core network node.

An embodiment of the present disclosure also provides an information transmission device, which is applied to a terminal. The device includes:

An acquisition unit configured to acquire identification information of a second relay node, which is the node through which the terminal passes before connecting to the first relay node;

The first sending unit is used to send a non-access layer NAS message to the first relay node, where the NAS message includes a terminal registration request and identification information of the second relay node.

An embodiment of the present disclosure also provides a network registration device, which is applied to core network nodes. The device includes:

The first receiving unit is configured to receive the first information sent by the first relay node. The first information includes the registration request of the terminal and the identification information of the second relay node. The second relay node is the The node that the terminal passes through before connecting to the first relay node;

The first determination unit is configured to determine whether to accept the registration request of the terminal based on the identification information of the second relay node.

An embodiment of the present disclosure also provides an information transmission device, which is applied to the first relay node. The device includes:

The second receiving unit is configured to receive the non-access layer NAS message sent by the terminal through the second relay node, where the NAS message carries the registration request of the terminal;

The second sending unit is configured to send first information to the core network node according to the NAS message. The first information includes the registration request of the terminal and the identification information of the second relay node. The second relay node The relay node is the node through which the terminal passes before connecting to the first relay node.

Embodiments of the present disclosure also provide a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the above method.

The beneficial effects of this disclosure are:

The above scheme, by sending the identification information of the second relay node to the first relay node together with the registration request, enables the first information sent by the first relay node to be received, including the registration request of the terminal and the identification information of the second relay node, and then determines whether to accept the registration request of the terminal based on the identification information of the second relay node; thereby, the access control of the terminal can be effectively performed to ensure the reliability of communication.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or related technologies, the drawings needed to be used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings in the following description are only for the purpose of describing the embodiments or related technologies. For some embodiments described in the disclosure, those of ordinary skill in the art can also obtain other drawings based on these drawings without exerting any creative effort.

Figure 1 shows the schematic diagram of IAB architecture;

Figure 2 shows a schematic flow chart of a network registration method according to an embodiment of the present disclosure;

Figure 3 shows a schematic diagram of the communication process between IAB and the terminal;

Figure 4 shows one of the specific implementation flow diagrams of the embodiment of the present disclosure;

FIG5 shows a second schematic diagram of a specific implementation flow of an embodiment of the present disclosure;

Figure 6 shows a schematic flowchart of an information transmission method applied to a first relay node according to an embodiment of the present disclosure;

Figure 7 shows a schematic flow chart of an information transmission method applied to a terminal according to an embodiment of the present disclosure;

Figure 8 shows a schematic unit diagram of a network registration device according to an embodiment of the present disclosure;

Figure 9 shows a structural diagram of a core network node according to an embodiment of the present disclosure;

Figure 10 shows one of the unit schematic diagrams of the information transmission device according to the embodiment of the present disclosure;

Figure 11 shows the second unit schematic diagram of the information transmission device according to the embodiment of the present disclosure;

FIG. 12 shows a structural diagram of a terminal according to an embodiment of the present disclosure.

Detailed ways

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not All examples. Based on the embodiments in this disclosure, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of this disclosure.

The terms "first", "second", etc. in the description and claims of the present disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the disclosure described herein may be implemented, for example, in sequences other than those illustrated or described herein. Furthermore, the terms "include" and "having" and any variations thereof are intended to cover non-exclusive inclusions, e.g., a process, method, system, product, or apparatus that encompasses a series of steps or units and need not be limited to those explicitly listed. Those steps or elements may instead include other steps or elements not expressly listed or inherent to the process, method, product or apparatus.

In the embodiment of the present disclosure, the term "and/or" describes the association relationship of associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone. these three situations. The character "/" generally indicates that the related objects are in an "or" relationship. In the embodiment of this disclosure, the term "plurality" refers to two or more than two, and other quantifiers are similar to it.

In the embodiments of the present disclosure, words such as “exemplary” or “such as” are used to represent examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "such as" in the present disclosure is not intended to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the words "exemplary" or "such as" is intended to present the concept in a concrete manner.

The following describes embodiments of the present disclosure with reference to the accompanying drawings. The information transmission method, device, network equipment and terminal equipment provided by the embodiments of the present disclosure can be applied in wireless communication systems. The wireless communication system may be a system using the fifth generation (5th Generation, 5G) mobile communication technology (hereinafter referred to as the 5G system). Those skilled in the field can understand that the 5G New Radio (NR) system is only Examples, not limitations.

First, some concepts related to the embodiments of the present disclosure are described as follows.

1. Integrated Access and Backhaul (IAB) architecture

IAB is a wireless relay technology within the 5G radio access network (NG-RAN). The relay node (called IAB node) supports access and backhaul through NR. The terminating node of the backhaul is called the IAB anchor (IAB donor), which is a gNB supporting IAB. The IAB architecture is shown in Figure 1.

The IAB anchor includes an IAB anchor control unit (IAB-donor-CU) and one or more IAB Anchor distribution unit (IAB-donor-DU), the IAB node connects to the upstream IAB node or IAB-donor-DU through the user equipment (User Equipment, UE) function of the NR Uu interface. The IAB node provides wireless backhaul to downstream IAB nodes and UEs through the network functions of the NR Uu interface.

2. Broadcast message of IAB node

The System Information Block 1 (SIB1) message contains cell access related information (cellAccessRelatedInfo). The cellAccessRelatedInfo contains a public land mobile network identification information list (plmn-IdentityInfoList). The plmn-IdentityInfoList contains optional Parameters: Whether to support the IAB logo (iab-Support-r16).

3. 5G core network (5GC) network function entity (Network Function, NF)

5GC NF (such as Policy Control Function (PCF) or Access and Mobility Management Function (AMF)) determines the mobile base station relay selection strategy and provides the strategy to the UE or anchor point Radio Access Network (RAN) node. The UE or anchor RAN node selects the mobile base station relay according to this policy.

When the anchor RAN node is responsible for selecting the mobile base station relay, the anchor RAN node makes a topology adaptation decision and triggers the topology adaptation process.

When the UE is responsible for selecting the mobile base station relay, the UE can trigger the deletion, addition or change of the mobile base station relay in the following ways.

1. The UE sends a preference indication (such as the desire to use/not use the base station relay) to the anchor RAN, and the anchor RAN decides whether to accept the UE access request. The anchor RAN's decision-making is based on the UE registration. When registering through the anchor RAN, the network downloads The policy sent to the anchor RAN. If the UE requests access through the relay base station, the UE accesses the network through the anchor RAN node, and the AMF determines whether the UE is allowed to access through the relay base station.

2. The UE provides network preference instructions to the AMF through the Non-Access Stratum (NAS) message. The UE can include information such as the desired use/non-use of the base station relay, the identification of the base station relay, and measurement results in the message. The AMF decides whether to accept the UE's request based on the policy, UE subscription, the above base station relay information (such as load), and returns the result to the UE.

Embodiments of the present disclosure provide network registration, information transmission methods, devices, and communication equipment to control access to terminals and achieve the purpose of access control to terminals.

Among them, the method and the device are based on the same application concept. Since the principles of the method and the device to solve the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated details will not be repeated.

As shown in Figure 2, an embodiment of the present disclosure provides a network registration method, which is executed by a core network node, including:

Step S201: receiving first information sent by a first relay node, wherein the first information includes a registration request of a terminal and identification information of a second relay node;

It should be noted that the second relay node is the node through which the terminal passes before connecting to the first relay node;

Step S202: Determine whether to accept the registration request of the terminal based on the identification information of the second relay node.

It should be noted that in the embodiment of the present disclosure, it is determined whether to accept the registration request of the terminal based on the identification information of the second relay node, so that terminal access control based on the relay node can be implemented and the accuracy of terminal access can be ensured. , ensuring the reliability of communication.

Optionally, the core network node mentioned in the embodiment of the present disclosure may be an AMF.

Optionally, the first relay node mentioned in the embodiment of the present disclosure can be understood as the last hop when the terminal accesses the network through the relay. For example, if the terminal accesses the network through node 1 and node 2 in sequence, then node 2 It is considered as a relay anchor node; preferably, the first relay node is an IAB anchor point.

Optionally, in another embodiment of the present disclosure, the implementation method of determining whether to accept the registration request of the terminal based on the identification information of the second relay node includes:

It is determined whether to accept the registration request of the terminal according to the indication information of whether the terminal is allowed to access the network through the second relay node and the identification information of the second relay node.

Optionally, the method for obtaining the indication information of whether to allow the terminal to access the network through the second relay node includes at least one of the following:

A11. Acquire, from first configuration information, indication information of whether the terminal is allowed to access the network through the second relay node, the first configuration information including: indication information of whether the terminal is allowed to access the network through the second relay node;

It should be noted that the first configuration information can be understood as the configuration stored in the core network node, and there is no need to obtain configuration from other network elements.

When the indication information indicates that the terminal is allowed to access the network through the second relay node, the core network node The point accepts the terminal's registration request and returns a registration acceptance message to the terminal; when the indication information indicates that the terminal is not allowed to access the network through the second relay node, the core network node rejects the terminal's registration request and returns a registration rejection message to the terminal.

A12. Obtain indication information of whether the terminal is allowed to access the network through the second relay node from the second configuration information in the terminal's subscription information. The second configuration information includes: whether the terminal is allowed to access the network through the second relay node. Instruction information for the second relay node to access the network;

It should be noted that under normal circumstances, the terminal's contract information is stored in Unified Data Management (UDM), and the core network node needs to obtain the terminal's contract information from UDM. The contract information includes: whether the acquisition is allowed Instruction information for the terminal to access the network through the second relay node;

When it is determined from the subscription information that the terminal can access the network through the second relay node, the core network node accepts the terminal's registration request and returns a registration acceptance message to the terminal; when it is determined from the subscription information that the terminal cannot access the network through the second relay node When the node accesses the network, the core network node rejects the terminal's registration request and returns a registration rejection message to the terminal.

A13. Obtain indication information of whether the terminal is allowed to access the network through the second relay node from the first policy information of the terminal. The first policy information includes: whether the terminal is allowed to access the network through the second relay node. Instruction information for relay nodes to access the network;

It should be noted that, usually, the policy information of the terminal is stored in the Policy Control function (PCF), and the core network node needs to obtain the first policy information of the terminal from the PCF. Usually, the first policy information includes is the identification information of the second relay node that allows the terminal to access the network through the second relay node; optionally, the second relay node that allows the terminal to access the network through the second relay node The identification information of the relay node can be configured in the form of an identification list (ie, IAB node ID List) in specific applications.

When the identification information of the second relay node exists in the identification information, the core network node accepts the registration request of the terminal and returns a registration acceptance message to the terminal; when the identification information of the second relay node does not exist in the identification information, the core network node The network node rejects the terminal's registration request and returns a registration rejection message to the terminal.

Optionally, in another embodiment of the present disclosure, after determining whether to accept the registration request of the terminal based on the identification information of the second relay node, the method further includes:

When it is determined that the registration request of the terminal is not accepted, a registration rejection message is sent to the terminal, where the registration rejection message carries identification information of the relay node that allows the terminal to access.

It should be noted that in the case of registration rejection, the core network node returns to the terminal the identification information of the relay node that allows the terminal to access, to assist the terminal in selecting the relay node that allows the terminal to access during the subsequent network access process. The relay node indicated in the identification information is accessed to avoid the problem of wasted signaling overhead caused by invalid access. Optionally, the core network node may carry second policy information related to the relay node in the registration rejection message, where the second policy information related to the relay node includes identification information of the relay node that allows the terminal to access.

Optionally, in another embodiment of the present disclosure, after determining whether to accept the registration request of the terminal based on the identification information of the second relay node, the method further includes:

If it is determined that the registration request of the terminal is accepted, a registration acceptance message is sent to the terminal.

Optionally, the registration acceptance message may also carry identification information of the relay node that allows the terminal to access.

In one case, the core network node may carry the first policy information of the terminal in the registration acceptance message, where the first policy information includes: identification information of the relay node that allows the terminal to access.

It should be noted that when the registration is accepted, the core network node can also return to the terminal the identification information of the relay node that allows the terminal to access, to assist the terminal in selecting the relay node that allows the terminal to access in the subsequent network access process. The relay node indicated in the identification information of the relay node is accessed to ensure the reliability of the access.

It should also be noted that the first relay node can send the first information to the core network node in the following manner:

Receive a non-access layer NAS message sent by the terminal through the second relay node, where the NAS message carries the registration request of the terminal;

According to the NAS message, the first information is sent to the core network node. The first information includes the registration request of the terminal and the identification information of the second relay node. The second relay node is connected to the terminal. The node passed before reaching the first relay node.

Optionally, the implementation method of sending the first information to the core network node includes one of the following methods:

Mode 1: The NAS message also carries the identification information of the second relay node forwarding the NAS message to the core network node, where the NAS message includes the first information;

It should be noted that in this case, the NAS message sent by the terminal to the first relay node carries the first information, and the first relay node only needs to forward the NAS message to the core network node.

Optionally, the terminal may acquire the identification information of the second relay node in one of the following ways:

B11. Receive a broadcast message from the second relay node, where the broadcast message carries the identification information of the second relay node;

It should be noted that this situation means that the relay node that allows the terminal to access will send a broadcast message (such as SIB, SIB1) to the terminal. The broadcast message carries the identification information of the relay node itself. Which message is received by the terminal? The broadcast message of a relay node determines which relay node can be accessed through, and the relay node is the second relay node.

For example, as shown in Figure 3, the IAB node adds the identity of its corresponding IAB node (for example, IAB node ID) in the broadcast message (SIB). After receiving the broadcast message, the terminal adds the identity of the IAB node at the RRC layer to Register in NAS messages. Optionally, the notification of the identity of the IAB node is implemented by adding an IAB node identity (iABNodeidentity) information item to the PLMN identity information list (PLMN-IdentityInfoList) information element.

B12. Determine the identification information of the second relay node according to the identification information of the relay node that allows the terminal to access and the broadcast message of the relay node;

It should be noted that this situation refers to that the terminal side stores the identification information of the relay node that allows the terminal to access, and the relay node that allows the terminal to access will send a broadcast message (such as SIB1) to the terminal. The broadcast message carries the identification information of the relay node itself. After receiving the broadcast message of a certain relay node, the terminal also needs to determine whether the relay node is located in the identification information of the relay node that allows the terminal to access. If it is located in the allowed relay node If the terminal accesses the identification information of the relay node, it is determined that the terminal can access through this relay node, and the relay node is the second relay node.

That is to say, in the case of B12 above, if the terminal receives a broadcast from one of the IAB nodes, and the terminal determines that the IAB node is in the identification information of its own relay node that allows the terminal to access, then the IAB node The ID is added to the NAS message.

Optionally, the identification information of the relay node that is allowed to be accessed by the terminal stored on the terminal side can be The above-mentioned registration acceptance message or registration rejection message notification.

B13. Acquire identification information of a second relay node based on pre-configured identification information of a relay node that the terminal can access;

It should be noted that in this case, the terminal is pre-configured with the identification of the relay node that can be accessed. When the terminal accesses, it only needs to select a relay node and carry its identification information in the NAS message.

Optionally, in order to ensure that the terminal can successfully access the selected relay node, usually after the terminal selects a relay node, it needs to receive the broadcast message sent by the relay node before carrying the NAS message in the NAS message. Identification information of the relay node.

Optionally, if the terminal side stores identification information of an existing relay node that allows the terminal to access, upon receiving a broadcast message from the second relay node, it determines whether it can be accessed through the second relay node. ; When it is determined that access through the second relay node is possible, encapsulate the identification information of the second relay node in a NAS message; send the NAS message to the first relay node.

Optionally, if the terminal determines that it cannot be accessed through the second relay node, the access operation is not performed.

Method 2: Obtain the identification information of the second relay node and send the first information to the core network node;

It should be noted that in this case, the NAS message sent by the terminal to the first relay node only carries the terminal registration request, and the first relay node needs to include the identifier of the second relay node when forwarding the NAS message. The information is sent to the core network node together. Because the NAS message received by the first relay node is sent from the second relay node, the first relay node can clearly know the identification information of the second relay node.

The specific application situations of the embodiments of the present disclosure in practical applications are described below with examples.

Application case 1. The terminal carries the identity registration of the IAB node, and AMF allows access to the corresponding IAB node.

As shown in Figure 4, the specific implementation process includes:

Step S401, the terminal sends a registration request;

For example, the terminal can directly carry the optional parameter IAB node ID in the NAS message;

For example, the terminal can also only send a NAS message to the IAB anchor point. The NAS message only carries the registration request. When the IAB anchor point receives the NAS message carrying the registration request from the IAB node, it will The IAB node ID added for this registration request is sent to the network.

Note: Whether the NAS message carries the IAB node ID depends on whether the terminal receives the SIB1 broadcast carrying the IAB node ID. If it is not carried, the network will issue the relevant IAB node ID information to the terminal when this registration is completed.

If the IAB node ID exists in the NAS message, the enhancements to the related technologies are as follows:

Step S402: After receiving the NAS message, the AMF determines whether to continue registration according to the first configuration information in the AMF (such as indication information on whether to allow the terminal to access through the second relay node).

Step S403, AMF performs UDM selection;

Step S404, AMF communicates with UDM and registers the terminal to UDM;

Step S405, AMF obtains the terminal’s contract information;

Step S406: AMF determines whether to allow the terminal to access through the IAB node ID based on the second configuration information in the subscription information.

Step S407, perform PCF selection;

Step S408, AMF establishes policy association with PCF;

Step S409, AMF determines whether to allow the terminal to access through the IAB node ID based on the first policy information obtained from the PCF;

The first policy information includes the optional parameter IAB node ID List.

Step S410, executing the subsequent registration process;

Step S411, return a registration acceptance message to the terminal;

The registration acceptance message contains the terminal policy of the optional parameter IAB node ID List and is sent to the terminal.

It should be noted that the above steps S402, S406 and S409 are optional steps, and only one of them is sufficient.

In Figure 4, the identifier of the IAB node is the IAB node ID.

Application scenario 2: The terminal carries the identity of the IAB node for registration, and AMF is not allowed to access the corresponding IAB node.

As shown in Figure 5, the specific implementation process includes:

Step S501, the terminal sends a registration request;

For example, the terminal can directly carry the optional parameter IAB node ID in the NAS message;

For example, the terminal may also only send a NAS message to the IAB anchor point, and the NAS message only carries a registration request. When the IAB anchor point receives a NAS message carrying a registration request from the IAB node, it sends the IAB node ID added to the registration request to the network.

Note: Whether the NAS message carries the IAB node ID depends on whether the terminal receives the SIB1 broadcast carrying the IAB node ID. If it is not carried, the network will issue the relevant IAB node ID information to the terminal when this registration is completed.

If the IAB node ID exists in the NAS message, the enhancements to the related technologies are as follows:

Step S502: After receiving the NAS message, the AMF determines whether to continue registration according to the first configuration information in the AMF (such as indication information on whether to allow the terminal to access through the second relay node).

Step S503, AMF performs UDM selection;

Step S504, AMF communicates with UDM and registers the terminal to UDM;

Step S505, AMF obtains the terminal’s contract information;

Step S506: AMF determines whether to allow the terminal to access through the IAB node ID based on the second configuration information in the subscription information.

Step S507, perform PCF selection;

Step S508, AMF establishes policy association with PCF;

Step S509, AMF obtains the first policy information of the terminal from PCF, which contains the optional parameter IAB node ID List;

Step S510, return a registration rejection message to the terminal;

The registration rejection message contains the terminal policy of the optional parameter IAB node ID List and is sent to the terminal.

It should be noted that the above steps S502, S506 and S509 are optional steps, and only one of them is sufficient.

It should also be noted that if AMF has obtained the policy information related to the IAB node on the PCF, that is, the IAB node ID List, step S510 will be executed directly;

If the AMF is not obtained, perform step 507 and step S508 to obtain the policy information related to the IAB node, and then perform step S510.

Further, after receiving the policy information related to the IAB node, the terminal saves it.

In FIG5 , the identifier of the IAB node is the IAB node ID.

It should be noted that at least one embodiment of the present disclosure receives the first information including the terminal's registration request and the identification information of the second relay node sent by the first relay node, and then based on the second relay node's Identification information to determine whether to accept the registration request of the terminal; in this way, the access control of the terminal can be effectively carried out to ensure communication reliability; the embodiment of the present disclosure solves the problem of whether the network can pass the IAB corresponding to a certain IAB node ID for a terminal. Restrictions on node access to the network.

The technical solutions provided by the embodiments of the present disclosure can be applied to a variety of systems, especially 5G systems. For example, applicable systems can be global system of mobile communication (GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet Wireless service (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, Advanced long term evolution (long term evolution advanced, LTE-A) system, universal mobile telecommunication system (UMTS), global interoperability for microwave access (WiMAX) system, 5G New Radio, NR) system, etc. These various systems include terminal equipment and network equipment. The system can also include the core network part, such as the Evolved Packet System (EPS), 5G System (5G System, 5GS), etc.

The terminal involved in the embodiments of the present disclosure may be a device that provides voice and/or data connectivity to users, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem, etc. In different systems, the name of the terminal may be different. For example, in the 5G system, the terminal may be called User Equipment (UE). The wireless terminal can communicate with one or more core networks (Core Network, CN) via the Radio Access Network (RAN). The wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) and computers with mobile terminals, which may be, for example, portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile devices, which exchange voice and/or data with the radio access network. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants, PDA) and other equipment. A wireless terminal may also be called a system, a subscriber unit, or a subscriber station. station, mobile station, mobile, remote station, access point, remote terminal, access terminal, user terminal terminal, user agent, and user device are not limited in the embodiments of the present disclosure.

The first relay node involved in the embodiment of the present disclosure may be a base station, and the base station may include multiple cells that provide services for terminals. Depending on the specific application, a base station can also be called an access point, or it can be a device in the access network that communicates with wireless terminal equipment through one or more sectors on the air interface, or it can be named by another name. The first relay node may be used to exchange received air frames with Internet Protocol (IP) packets and act as a router between the wireless terminal device and the rest of the access network, where the rest of the access network May include Internet Protocol (IP) communications networks. The first relay node may also coordinate attribute management of the air interface. For example, the first relay node involved in the embodiment of the present disclosure may be a relay anchor point (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA). Base Transceiver Station (BTS), it can also be the relay anchor (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or it can be long term evolution (LTE) The evolutionary relay anchor point in the system (evolutional Node B, eNB or e-NodeB), the 5G base station (gNB) in the 5G network architecture (next generation system), or the home evolved base station (Home evolved Node B, HeNB) ), relay node, home base station (femto), pico base station (pico), etc., are not limited in the embodiments of this disclosure. In some network structures, the first relay node may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and distributed unit may also be arranged geographically separately.

The first relay node and the terminal device can each use one or more antennas for multiple input multiple output (Multi Input Multi Output, MIMO) transmission. The MIMO transmission can be single user MIMO (Single User MIMO, SU-MIMO) or Multi-User MIMO (Multiple User MIMO, MU-MIMO). Depending on the shape and number of root antenna combinations, MIMO transmission can be two-dimensional MIMO (2Dimension MIMO, 2D-MIMO), three-dimensional MIMO (3Dimension MIMO, 3D-MIMO), full-dimensional MIMO (Full Dimension MIMO, FD-MIMO) or ultra-large Massive MIMO (massive-MIMO) can also be diversity transmission or precoding transmission or beamforming transmission. Lose and wait.

Corresponding to the implementation on the core network node side, as shown in Figure 6, embodiments of the present disclosure provide an information transmission method, which is executed by the first relay node, including:

Step S601: Receive the non-access layer NAS message sent by the terminal through the second relay node, where the NAS message carries the registration request of the terminal;

Step S602: Send first information to the core network node according to the NAS message. The first information includes the registration request of the terminal and the identification information of the second relay node. The second relay node is the The node that the terminal passes through before connecting to the first relay node.

Optionally, sending the first information to the core network node includes:

In a case where the NAS message also carries the identification information of the second relay node, forwarding the NAS message to the core network node, where the NAS message includes the first information; or

Obtain the identification information of the second relay node and send the first information to the core network node.

It should be noted that all the descriptions about the first relay node in the above embodiments are applicable to the embodiments of the information transmission method, and the same technical effects can be achieved, which will not be described again here.

Corresponding to the implementation on the core network node side, as shown in Figure 7, embodiments of the present disclosure provide an information transmission method, which is executed by a terminal, including:

Step S701: Obtain the identification information of the second relay node, which is the node through which the terminal passes before connecting to the first relay node;

Step S702: Send a non-access layer NAS message to the first relay node through the second relay node, where the NAS message includes a terminal registration request and identification information of the second relay node.

Optionally, the acquiring identification information of the second relay node includes one of the following:

Receive a broadcast message from the second relay node, where the broadcast message carries identification information of the second relay node;

Determine the identification information of the second relay node according to the identification information of the relay node that allows the terminal to access and the broadcast message of the relay node;

Based on the preconfigured identification information of the relay node that the terminal can access, the identification information of the second relay node is obtained.

Optionally, the non-access layer NAS message is sent to the first relay node through the second relay node, include:

If the terminal obtains the identification information of the relay node that allows the terminal to access, when receiving the broadcast message of the second relay node, encapsulates the identification information of the second relay node in the NAS message;

The NAS message is sent to the first relay node through the second relay node.

Optionally, when receiving a broadcast message from the second relay node, encapsulating the identification information of the second relay node in a NAS message includes:

When receiving the broadcast message from the second relay node, determine whether the network can be accessed through the second relay node;

When it is determined that the network can be accessed through the second relay node, the identification information of the second relay node is encapsulated in the NAS message.

Optionally, the method also includes:

Receive a registration acceptance message sent by the core network node. The registration acceptance message is sent by the core network node when it determines to accept the registration request of the terminal. The registration acceptance message carries the information of the relay node that allows the terminal to access. Identification information.

Optionally, the method also includes:

Receive a registration rejection message sent by the core network node. The registration rejection message is sent by the core network node when it determines that it does not accept the terminal's registration request. The registration rejection message carries a relay node that allows the terminal to access. identification information.

It should be noted that all the descriptions about the terminal in the above embodiments are applicable to the embodiments of the information transmission method, and the same technical effects can be achieved, which will not be described again here.

As shown in Figure 8, an embodiment of the present disclosure provides a network registration device 800, which is applied to core network nodes. The network registration device 800 includes:

The first receiving unit 801 is configured to receive the first information sent by the first relay node. The first information includes the registration request of the terminal and the identification information of the second relay node. The second relay node is the The node that the terminal passes through before connecting to the first relay node;

The first determining unit 802 is configured to determine whether to accept the registration request of the terminal based on the identification information of the second relay node.

Optionally, the first determining unit 802 is used to:

It is determined whether to accept the registration request of the terminal according to the indication information of whether the terminal is allowed to access the network through the second relay node and the identification information of the second relay node.

Optionally, after the first determining unit 802 determines whether to accept the registration request of the terminal based on the identification information of the second relay node, the device further includes:

The third sending unit is configured to send a registration rejection message to the terminal when it is determined that the registration request of the terminal is not accepted, where the registration rejection message carries identification information of the relay node that allows the terminal to access.

Optionally, after the first determining unit 802 determines whether to accept the registration request of the terminal based on the identification information of the second relay node, the device further includes:

The fourth sending unit is configured to send a registration acceptance message to the terminal when it is determined to accept the registration request of the terminal.

It should be noted that this device embodiment is a device that corresponds one-to-one with the above-mentioned method embodiment. All implementation methods in the above-mentioned method embodiment are applicable to the embodiment of the device, and the same technical effect can be achieved.

It should be noted that the division of units in the embodiment of the present disclosure is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above integrated units can be implemented in the form of hardware or software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or contributes to the relevant 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, It includes several instructions to cause a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in various embodiments of the present disclosure. The aforementioned storage media include: U disk, mobile hard disk, 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 shown in Figure 9, an embodiment of the present disclosure also provides a core network node, including a processor 900, Transceiver 910, memory 920, and programs stored on the memory 920 and executable on the processor 900; wherein, the transceiver 910 is connected to the processor 900 and the memory 920 through a bus interface, wherein the processor 900 is used to read the program in the memory and perform the following process:

Receive the first information sent by the first relay node, the first information including the registration request of the terminal and the identification information of the second relay node, and the second relay node connects the terminal to the first The nodes that the relay node passes through before;

Based on the identification information of the second relay node, determine whether to accept the registration request of the terminal.

The transceiver 910 is configured to receive and send data under the control of the processor 900 .

In FIG. 9 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 900 and various circuits of the memory represented by memory 920 are linked together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are all well known in the art and therefore will not be described further herein. The bus interface provides the interface. The transceiver 910 may be a plurality of elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical cables, etc. Transmission medium.

The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 can store data used by the processor 900 when performing operations.

Optionally, the processor 900 may be a central processing unit (Central Processing Unit, CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable Logic device (Complex Programmable Logic Device, CPLD), the processor can also adopt a multi-core architecture.

The processor is configured to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory can also be physically separated.

Further, the processor is used to read the computer program in the memory and perform the following operations:

It is determined whether to accept the registration request of the terminal according to the indication information of whether the terminal is allowed to access the network through the second relay node and the identification information of the second relay node.

Further, the processor is used to read the computer program in the memory and perform the following operations:

When it is determined that the registration request of the terminal is not accepted, a registration rejection message is sent to the terminal, where the registration rejection message carries identification information of the relay node that allows the terminal to access.

Furthermore, the processor is used to read the computer program in the memory and further perform the following operations:

When it is determined that the terminal's registration request is accepted, a registration acceptance message is sent to the terminal.

It should be noted here that the above-mentioned core network node provided by the embodiment of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiment, and can achieve the same technical effect. The methods in this embodiment will no longer be implemented here. The same parts and beneficial effects will be described in detail.

Embodiments of the present disclosure also provide a computer-readable storage medium on which a computer program is stored, wherein the computer program implements the steps of a network registration method applied to a core network node when executed by a processor. The processor-readable storage medium may be any available media or data storage device that the processor can access, including but not limited to magnetic storage (such as floppy disks, hard disks, tapes, magneto-optical disks (Magneto-Optical Disk, MO), etc.) , Optical storage (such as Compact Disk (CD), Digital Versatile Disc (DVD), Blu-ray Disc (BD), High-Definition Versatile Disc (HVD), etc.), And semiconductor memories (such as read-only memory (Read-Only Memory, ROM), erasable programmable read-only memory (Erasable Programmable ROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), non-easy Non-volatile memory (NAND FLASH), solid state drive (Solid State Disk or Solid State Drive, SSD), etc.

As shown in Figure 10, an embodiment of the present disclosure provides an information transmission device 1000, which is applied to the first relay node. The information transmission device 1000 includes:

The second receiving unit 1001 is configured to receive the non-access layer NAS message sent by the terminal through the second relay node, where the NAS message carries the registration request of the terminal;

The second sending unit 1002 is configured to send first information to the core network node according to the NAS message. The first information includes the registration request of the terminal and the identification information of the second relay node. The second The relay node is the node through which the terminal passes before connecting to the first relay node.

Optionally, the second sending unit 1002 is used for:

If the NAS message also carries the identification information of the second relay node, forward the NAS message to the core network node, and the NAS message includes the first information; or

Obtain identification information of the second relay node, and send first information to the core network node.

It should be noted that this device embodiment is a device that corresponds one-to-one with the above-mentioned method embodiment. All implementation methods in the above-mentioned method embodiment are applicable to the embodiment of the device, and the same technical effect can be achieved.

It should be noted that the division of units in the embodiment of the present disclosure is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above integrated units can be implemented in the form of hardware or software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or contributes to the relevant 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, It includes several instructions to cause a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in various embodiments of the present disclosure. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code. .

An embodiment of the present disclosure also provides a relay node, where the relay node is a first relay node. For the structure of the first relay node, reference can be made to the structure of the core network node in Figure 9, which will not be described again here.

Wherein, the processor is used to read the computer program in the memory and perform the following operations:

Receive a non-access layer NAS message sent by the terminal through the second relay node, where the NAS message carries the registration request of the terminal;

According to the NAS message, the first information is sent to the core network node. The first information includes the registration request of the terminal and the identification information of the second relay node. The second relay node is connected to the terminal. The node passed before reaching the first relay node.

Furthermore, the processor is used to read the computer program in the memory and perform the following operations:

If the NAS message also carries the identification information of the second relay node, forward the NAS message to the core network node, and the NAS message includes the first information; or

Obtain identification information of the second relay node, and send first information to the core network node.

It should be noted here that the above-mentioned relay node provided by the embodiment of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiment, and can achieve the same technical effect. The methods in this embodiment will no longer be implemented here. The same parts and beneficial effects will be described in detail.

Embodiments of the present disclosure also provide a computer-readable storage medium on which a computer program is stored, wherein when the computer program is executed by a processor, the steps of the information transmission method applied to the first relay node are implemented. The processor-readable storage medium may be any available media or data storage device that the processor can access, including but not limited to magnetic storage (such as floppy disks, hard disks, tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor memories (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)), etc.

As shown in Figure 11, an embodiment of the present disclosure provides an information transmission device 1100, which is applied to a terminal. The information transmission device 1100 includes:

The obtaining unit 1101 is used to obtain the identification information of the second relay node, which is the node through which the terminal passes before connecting to the first relay node;

The first sending unit 1102 is configured to send a non-access layer NAS message to the first relay node, where the NAS message includes a terminal registration request and identification information of the second relay node.

Optionally, the acquisition unit 1101 is used to implement one of the following:

Receive a broadcast message from the second relay node, where the broadcast message carries identification information of the second relay node;

Determine the identification information of the second relay node according to the identification information of the relay node that allows the terminal to access and the broadcast message of the relay node;

Based on the preconfigured identification information of the relay node that the terminal can access, the identification information of the second relay node is obtained.

Optionally, the first sending unit 1102 is used for:

If the terminal obtains the identification information of the relay node that allows the terminal to access, when receiving the broadcast message of the second relay node, encapsulates the identification information of the second relay node in the NAS message;

The NAS message is sent to the first relay node through the second relay node.

Optionally, when a broadcast message from a second relay node is received, an implementation manner of encapsulating the identification information of the second relay node in a NAS message includes:

When receiving the broadcast message from the second relay node, determine whether the network can be accessed through the second relay node;

When it is determined that the network can be accessed through the second relay node, the identification information of the second relay node is encapsulated in the NAS message.

Optionally, the device also includes:

The third receiving unit is configured to receive a registration acceptance message sent by the core network node. The registration acceptance message is sent by the core network node when it determines to accept the registration request of the terminal. The registration acceptance message carries the permission of the terminal. Identification information of the accessed relay node.

Optionally, the device also includes:

The fourth receiving unit is configured to receive a registration rejection message sent by the core network node. The registration rejection message is sent by the core network node when the core network node determines that it does not accept the terminal's registration request. The registration rejection message carries permission. Identification information of the relay node that the terminal accesses.

It should be noted that this device embodiment is a device that corresponds one-to-one with the above-mentioned method embodiment. All implementation methods in the above-mentioned method embodiment are applicable to the embodiment of the device, and the same technical effect can be achieved.

It should be noted that the division of units in the embodiment of the present disclosure is schematic and is only a logical function division. In actual implementation, there may be other division methods. In addition, each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above integrated units can be implemented in the form of hardware or software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium. Based on this understanding, this The nature of the disclosed technical solution or the part that contributes to the relevant technology or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions to enable A computer device (which may be a personal computer, a server, or a network device, etc.) or a processor executes all or part of the steps of the methods described in various embodiments of the present disclosure. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program code. .

As shown in Figure 12, an embodiment of the present disclosure also provides a terminal, including a processor 1200, a transceiver 1210, a memory 1220, and a program stored on the memory 1220 and executable on the processor 1200; wherein, The transceiver 1210 is connected to the processor 1200 and the memory 1220 through a bus interface, where the processor 1200 is used to read the program in the memory and perform the following processes:

Obtain identification information of a second relay node, which is the node through which the terminal passes before connecting to the first relay node;

A non-access layer NAS message is sent to the first relay node through the second relay node, where the NAS message includes a terminal registration request and identification information of the second relay node.

Transceiver 1210 for receiving and transmitting data under the control of processor 1200.

In FIG. 12 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1200 and various circuits of the memory represented by memory 1220 are linked together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are all well known in the art and therefore will not be described further herein. The bus interface provides the interface. The transceiver 1210 may be a plurality of elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical cables, etc. Transmission medium. For different user equipment, the user interface 1230 can also be an interface capable of externally connecting internal and external required equipment. The connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

The processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1220 can store data used by the processor 1200 when performing operations.

Optionally, the processor 1200 can be a CPU, ASIC, FPGA or CPLD, and the processor 1200 can also be to adopt multi-core architecture.

The processor is configured to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory can also be physically separated.

Further, the processor is configured to read the computer program in the memory and perform one of the following operations:

Receive a broadcast message from the second relay node, where the broadcast message carries identification information of the second relay node;

Determine the identification information of the second relay node according to the identification information of the relay node that allows the terminal to access and the broadcast message of the relay node;

Based on the preconfigured identification information of the relay node that the terminal can access, the identification information of the second relay node is obtained.

Further, the processor is used to read the computer program in the memory and perform the following operations:

If the terminal obtains the identification information of the relay node that allows the terminal to access, when receiving the broadcast message of the second relay node, encapsulates the identification information of the second relay node in the NAS message;

The NAS message is sent to the first relay node through the second relay node.

Further, the processor is used to read the computer program in the memory and perform the following operations:

When receiving the broadcast message from the second relay node, determine whether the network can be accessed through the second relay node;

In a case where it is determined that the network can be accessed through the second relay node, the identification information of the second relay node is encapsulated in the NAS message.

Further, the processor is used to read the computer program in the memory and perform the following operations:

Receive a registration acceptance message sent by the core network node. The registration acceptance message is sent by the core network node when it determines to accept the registration request of the terminal. The registration acceptance message carries the information of the relay node that allows the terminal to access. Identification information.

Further, the processor is used to read the computer program in the memory and perform the following operations:

Receive a registration rejection message sent by the core network node. The registration rejection message is sent by the core network node when it determines that it does not accept the terminal's registration request. The registration rejection message carries a relay node that allows the terminal to access. identification information.

It should be noted here that the above-mentioned terminal provided by the embodiment of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiment, and can achieve the same technical effect. The same as the method embodiment in this embodiment will no longer be used. The parts and beneficial effects will be described in detail.

Embodiments of the present disclosure also provide a computer-readable storage medium on which a computer program is stored, wherein when the computer program is executed by a processor, the steps of the information transmission method applied to the terminal are implemented. The processor-readable storage medium may be any available media or data storage device that the processor can access, including but not limited to magnetic storage (such as floppy disks, hard disks, tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor memories (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)), etc.

Those skilled in the art will appreciate that embodiments of the present disclosure may be provided as methods, systems, or computer program products. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) embodying computer-usable program code therein.

The disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each process and/or block in the flowchart illustrations and/or block diagrams, and combinations of processes and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a process or processes of a flowchart and/or a block or blocks of a block diagram.

These processors can also store executable instructions that can direct the computer or other programmable data processing The apparatus operates in a processor-readable memory in a specific manner such that instructions stored in the processor-readable memory produce an article of manufacture that includes instruction means that implements a process or processes in the flowchart and/or block diagram Functions specified in a box or boxes.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby causing the computer or other programmable device to The instructions that are executed provide steps for implementing the functions specified in a process or processes of the flowchart diagrams and/or a block or blocks of the block diagrams.

It should be noted that it should be understood that the division of the above modules is only a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. And these modules can all be implemented in the form of software called by processing elements; they can also be all implemented in the form of hardware; some modules can also be implemented in the form of software called by processing elements, and some modules can be implemented in the form of hardware. For example, the determination module can be a separately established processing element, or it can be integrated in a chip of the above-mentioned device. In addition, it can also be stored in the memory of the above-mentioned device in the form of program code, and called and executed by a processing element of the above-mentioned device. The implementation of other modules is similar. In addition, these modules can be fully or partially integrated together, or they can be implemented independently. The processing element described here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each module above can be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.

For example, each module, unit, sub-unit or sub-module may be one or more integrated circuits configured to implement the above method, such as: one or more application specific integrated circuits (Application Specific Integrated Circuit, ASIC), or one or Multiple microprocessors (digital signal processor, DSP), or one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), etc. For another example, when one of the above modules is implemented in the form of a processing element scheduler code, the processing element can be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processors that can call the program code. For another example, these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).

The terms "first", "second", etc. in the description and claims of the present disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the disclosure described herein, for example, except in this implementation in a sequence other than those illustrated or described. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, e.g., a process, method, system, product, or apparatus that encompasses a series of steps or units and need not be limited to those explicitly listed. Those steps or elements may instead include other steps or elements not expressly listed or inherent to the process, method, product or apparatus. In addition, the use of "and/or" in the description and claims indicates at least one of the connected objects, such as A and/or B and/or C, indicating the inclusion of A alone, B alone, C alone, and both A and B. There are 7 situations in which both B and C exist, both A and C exist, and A, B, and C all exist. Similarly, the use of "at least one of A and B" in this specification and in the claims should be understood to mean "A alone, B alone, or both A and B present."

Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the disclosure. In this way, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and equivalent technologies, the present disclosure is also intended to include these modifications and variations.

Claims (28)

1. An information transmission method, executed by a terminal, the method includes:

   Obtain identification information of a second relay node, which is the node through which the terminal passes before connecting to the first relay node;

   A non-access layer NAS message is sent to the first relay node through the second relay node, where the NAS message includes a terminal registration request and identification information of the second relay node.
2. The method according to claim 1, wherein said obtaining the identification information of the second relay node includes one of the following:

   receiving a broadcast message from a second relay node, where the broadcast message carries identification information of the second relay node;

   Determine the identification information of the second relay node according to the identification information of the relay node that allows the terminal to access and the broadcast message of the relay node;

   Based on the preconfigured identification information of the relay node that the terminal can access, the identification information of the second relay node is obtained.
3. The method according to claim 1, wherein sending the non-access layer NAS message to the first relay node through the second relay node includes:

   If the terminal obtains the identification information of the relay node that allows the terminal to access, when receiving the broadcast message of the second relay node, encapsulates the identification information of the second relay node in the NAS message;

   The NAS message is sent to the first relay node through the second relay node.
4. The method of claim 3, wherein, upon receiving a broadcast message from a second relay node, encapsulating the identification information of the second relay node in a NAS message includes:

   When receiving the broadcast message from the second relay node, determine whether the network can be accessed through the second relay node;

   When it is determined that the network can be accessed through the second relay node, the identification information of the second relay node is encapsulated in the NAS message.
5. The method of claim 1, further comprising:

   Receive a registration acceptance message sent by a core network node, where the registration acceptance message is the core network node's registration acceptance message. Sent when the node determines to accept the terminal's registration request, the registration acceptance message carries identification information of the relay node that allows the terminal to access.
6. The method of claim 1, further comprising:

   Receive a registration rejection message sent by the core network node. The registration rejection message is sent by the core network node when it determines that it does not accept the terminal's registration request. The registration rejection message carries a relay node that allows the terminal to access. identification information.
7. A network registration method, executed by a core network node, the method includes:

   Receive the first information sent by the first relay node, the first information including the registration request of the terminal and the identification information of the second relay node, and the second relay node connects the terminal to the first The nodes that the relay node passes through before;

   Based on the identification information of the second relay node, it is determined whether to accept the registration request of the terminal.
8. The method according to claim 7, wherein the determining whether to accept the registration request of the terminal based on the identification information of the second relay node includes:

   It is determined whether to accept the registration request of the terminal according to the indication information of whether the terminal is allowed to access the network through the second relay node and the identification information of the second relay node.
9. The method according to claim 7, wherein, after determining whether to accept the registration request of the terminal based on the identification information of the second relay node, further comprising:

   When it is determined that the registration request of the terminal is not accepted, a registration rejection message is sent to the terminal, where the registration rejection message carries identification information of the relay node that allows the terminal to access.
10. The method according to claim 7, wherein, after determining whether to accept the registration request of the terminal based on the identification information of the second relay node, further comprising:

    When it is determined that the terminal's registration request is accepted, a registration acceptance message is sent to the terminal.
11. An information transmission method, executed by a first relay node, the method includes:

    Receive a non-access layer NAS message sent by the terminal through the second relay node, where the NAS message carries the registration request of the terminal;

    According to the NAS message, the first information is sent to the core network node. The first information includes the registration request of the terminal and the identification information of the second relay node. The second relay node is connected to the terminal. The node passed before reaching the first relay node.
12. The method according to claim 11, wherein the sending of the first signal to the core network node Information, including:

    In a case where the NAS message also carries the identification information of the second relay node, forwarding the NAS message to the core network node, where the NAS message includes the first information; or

    Obtain the identification information of the second relay node and send the first information to the core network node.
13. A terminal comprises a memory, a transceiver, and a processor;

    Memory, used to store computer programs; transceiver, used to send and receive data under the control of the processor; processor, used to read the computer program in the memory and perform the following operations:

    Obtain identification information of a second relay node, which is the node through which the terminal passes before connecting to the first relay node;

    And send a non-access layer NAS message to the first relay node through the second relay node, where the NAS message includes the terminal registration request and the identification information of the second relay node.
14. The terminal according to claim 13, wherein the processor is configured to read the computer program in the memory and perform one of the following operations:

    receiving a broadcast message from a second relay node, where the broadcast message carries identification information of the second relay node;

    Determine the identification information of the second relay node according to the identification information of the relay node that allows the terminal to access and the broadcast message of the relay node;

    Based on the preconfigured identification information of the relay node that the terminal can access, the identification information of the second relay node is obtained.
15. The terminal according to claim 13, wherein the processor is configured to read the computer program in the memory and perform the following operations:

    If the terminal obtains the identification information of the relay node that allows the terminal to access, when receiving the broadcast message of the second relay node, encapsulates the identification information of the second relay node in the NAS message;

    The NAS message is sent to the first relay node through the second relay node.
16. The terminal according to claim 15, wherein the processor is configured to read the computer program in the memory and perform the following operations:

    In the case where the broadcast message of the second relay node is received, it is determined whether the third relay node can pass the The second relay node accesses the network;

    When it is determined that the network can be accessed through the second relay node, the identification information of the second relay node is encapsulated in the NAS message.
17. The terminal according to claim 13, wherein the processor, configured to read the computer program in the memory, further performs the following operations:

    Receive a registration acceptance message sent by the core network node. The registration acceptance message is sent by the core network node when it determines to accept the registration request of the terminal. The registration acceptance message carries the information of the relay node that allows the terminal to access. Identification information.
18. The terminal according to claim 13, wherein the processor, configured to read the computer program in the memory, further performs the following operations:

    Receive a registration rejection message sent by the core network node. The registration rejection message is sent by the core network node when it determines that it does not accept the terminal's registration request. The registration rejection message carries a relay node that allows the terminal to access. identification information.
19. A core network node includes a memory, a transceiver, and a processor;

    Memory, used to store computer programs; transceiver, used to send and receive data under the control of the processor; processor, used to read the computer program in the memory and perform the following operations:

    Receive the first information sent by the first relay node, the first information including the registration request of the terminal and the identification information of the second relay node, and the second relay node connects the terminal to the first The nodes that the relay node passes through before;

    Based on the identification information of the second relay node, it is determined whether to accept the registration request of the terminal.
20. The core network node according to claim 19, wherein the processor is configured to read the computer program in the memory and perform the following operations:

    It is determined whether to accept the registration request of the terminal according to the indication information of whether the terminal is allowed to access the network through the second relay node and the identification information of the second relay node.
21. The core network node according to claim 19, wherein the processor is configured to read the computer program in the memory and further perform the following operations:

    When it is determined that the registration request of the terminal is not accepted, a registration rejection message is sent to the terminal, where the registration rejection message carries identification information of the relay node that allows the terminal to access.
22. The core network node according to claim 19, wherein the processor is used to read The computer program in the memory also performs the following operations:

    When it is determined that the terminal's registration request is accepted, a registration acceptance message is sent to the terminal.
23. A relay node, the relay node is a first relay node, including a memory, a transceiver, and a processor;

    A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

    Receiving a non-access stratum NAS message sent by the terminal through the second relay node, where the NAS message carries a registration request of the terminal;

    According to the NAS message, the first information is sent to the core network node. The first information includes the registration request of the terminal and the identification information of the second relay node. The second relay node is connected to the terminal. The node passed before reaching the first relay node.
24. The relay node according to claim 23, wherein the processor is configured to read the computer program in the memory and perform the following operations:

    If the NAS message also carries the identification information of the second relay node, forward the NAS message to the core network node, and the NAS message includes the first information; or

    Obtain the identification information of the second relay node and send the first information to the core network node.
25. An information transmission device, applied to a terminal, the device includes:

    An acquisition unit configured to acquire identification information of a second relay node, which is the node through which the terminal passes before connecting to the first relay node;

    The first sending unit is used to send a non-access layer NAS message to the first relay node, where the NAS message includes a terminal registration request and identification information of the second relay node.
26. A network registration device, applied to core network nodes, the device includes:

    The first receiving unit is configured to receive the first information sent by the first relay node. The first information includes the registration request of the terminal and the identification information of the second relay node. The second relay node is the The node that the terminal passes through before connecting to the first relay node;

    The first determination unit is configured to determine whether to accept the registration request of the terminal based on the identification information of the second relay node.
27. An information transmission device, applied to a first relay node, comprising:

    The second receiving unit is configured to receive the non-access layer NAS message sent by the terminal through the second relay node, where the NAS message carries the registration request of the terminal;

    The second sending unit is configured to send first information to the core network node according to the NAS message. The first information includes the registration request of the terminal and the identification information of the second relay node. The second relay node The relay node is the node through which the terminal passes before connecting to the first relay node.
28. A processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the method described in any one of claims 1 to 12.