CN116866409A

CN116866409A - Near field communication controller discovery method, AMF, system and medium

Info

Publication number: CN116866409A
Application number: CN202210311791.4A
Authority: CN
Inventors: 谢沛荣; 欧建南; 梁灏泉; 吕振华
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2023-10-10

Abstract

The present disclosure provides a discovery method, an AMF, a system and a storage medium of a near field communication controller, wherein the method includes: the AMF receives DDNMF request information sent by a terminal, and the DDNMF request information comprises at least one Prose application ID; if the AMF determines that the target DDNMF information corresponding to the Prose application ID is not stored, the AMF sends DDNMF discovery request information to the NRF; AMF receives DDNMF discovery response information returned by NRF, wherein the DDNMF discovery response information comprises target DDNMF information supporting Prose application ID; and the AMF returns target DDNMF information to the terminal according to the DDNMF response information. The method and the device solve the problem that the terminal determines the proper DDNMF in the multi-DDNMF scene, can enhance the networking expansion capability of near-field communication, and improve the use experience of users.

Description

Near field communication controller discovery method, AMF, system and medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, an AMF, a system, and a storage medium for discovering a near field communications controller.

Background

In the 3GPP standard, a near field communication mode is defined, and near field communication refers to that in a base station signal free area, a remote UE (User Equipment) can access a mobile core network through relay UE transfer, or communication between terminals is directly performed. In order to control a relay terminal (or a peer terminal) discovery function in near field communication, a near field communication controller DDNMF (Discovery Name Management Function ) is introduced, and the DDNMF is mainly responsible for authentication/authorization when a UE performs near field communication, and manages and allocates a Prose (Proximity based Services, near field-based service) application ID and a Prose application code for a relay terminal discovery procedure. Currently, only one DDNMF can be supported for deployment for one PLMN (Public Land Mobile Network ), but for a scaled operator network, it is very difficult to provide services for all users by only one DDNMF, and there is currently no solution for how a terminal finds its required DDNMF in a multi-DDNMF scenario.

Disclosure of Invention

In view of the above, it is an object of the present invention to provide a discovery method, AMF, system and storage medium for a near field communication controller.

According to a first aspect of the present disclosure, there is provided a discovery method of a near field communication controller, including: the access and mobile management function AMF receives the request information of the discovery name management function DDNMF sent by the terminal; wherein the DDNMF request information includes: at least one distance-based service Prose application ID; the AMF sends DDNMF discovery request information to a network warehouse function NRF if determining that target DDNMF information corresponding to the Prose application ID is not stored; wherein the DDNMF discovery request information includes: the Prose application ID; the AMF receives DDNMF discovery response information returned by the NRF; wherein the DDNMF discovery response information includes: target DDNMF information supporting the Prose application ID; and the AMF returns the target DDNMF information to the terminal according to the DDNMF response information.

Optionally, if the AMF determines that the target DDNMF information corresponding to the Prose application ID is stored, the AMF acquires the target DDNMF information and returns the target DDNMF information to the terminal.

Optionally, the DDNMF request information sent by the AMF receiving terminal includes: the AMF receives a request message sent by the terminal and acquires the DDNMF request information from the request message; wherein the request message includes: DDNMF request message, registration request message, or periodically transmitted location update message.

Optionally, the returning the target DDNMF information to the terminal includes: the AMF sends a request response message to the terminal, and the request response message is used for carrying the target DDNMF information; wherein the request response message includes: DDNMF requests response message, registration response message or location update response message.

Optionally, the network warehouse function NRF receives and stores registration information sent by the DDNMF; wherein the registration information includes: prose application ID supported by DDNMF; the NRF determines target DDNMF information corresponding to a Prose application ID in the DDNMF discovery request information based on the registration information.

Optionally, the terminal accesses the corresponding DDNMF according to the target DDNMF information, and obtains a Prose application code corresponding to the Prose application ID, so as to execute corresponding service operation by using the Prose application code.

Optionally, the target DDNMF information includes: IP address and/or domain name information of the target DDNMF.

According to a second aspect of the present disclosure, there is provided an access and mobility management function, AMF, comprising: the request receiving module is used for receiving the request information of the discovery name management function DDNMF sent by the terminal; wherein the DDNMF request information includes: at least one distance-based service Prose application ID; a discovery request module, configured to send DDNMF discovery request information to a network warehouse function NRF if it is determined that the target DDNMF information corresponding to the Prose application ID is not stored; wherein the DDNMF discovery request information includes: the Prose application ID; the response receiving module is used for receiving the DDNMF discovery response information returned by the NRF; wherein the DDNMF discovery response information includes: target DDNMF information supporting the Prose application ID; and the information sending module is used for returning the target DDNMF information to the terminal according to the DDNMF response information.

Optionally, the discovery request module is further configured to, if it is determined that the target DDNMF information corresponding to the Prose application ID is stored, acquire the target DDNMF information and return the target DDNMF information to the terminal.

Optionally, the request receiving module is configured to receive a request message sent by the terminal, and acquire the DDNMF request information from the request message; wherein the request message includes: DDNMF request message, registration request message, or periodically transmitted location update message.

Optionally, the information sending module is configured to send a request response message to the terminal, where the request response message is used to carry the target DDNMF information; wherein the request response message includes: DDNMF requests response message, registration response message or location update response message.

Optionally, the NRF receives and stores registration information sent by the DDNMF; wherein the registration information includes: prose application ID supported by DDNMF; the NRF determines target DDNMF information corresponding to a Prose application ID in the DDNMF discovery request information based on the registration information.

According to a third aspect of the present disclosure, there is provided an AMF comprising: a memory; and a processor coupled to the memory, the processor configured to perform the method as described above based on instructions stored in the memory.

According to a fourth aspect of the present disclosure, a communication system includes: NRF, DDNMF, and AMF as described above.

According to a fifth aspect of the present disclosure, there is provided a computer readable storage medium storing computer instructions for execution by a processor of a method as described above.

The discovery method, AMF, system and storage medium of the near field communication controller solve the problem that the terminal determines the proper DDNMF under the multi-DDNMF scene, can enhance the networking expansion capability of near field communication, can be used in a 5G and subsequent evolution mobile communication system (such as 6G and the like), and improves the use experience of users.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the description of the prior art, it being obvious that the drawings in the following description are only some embodiments of the present disclosure, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a flow diagram of one embodiment of a discovery method of a near field communications controller according to the present disclosure;

FIG. 2 is a flow diagram of another embodiment of a discovery method of a near field communications controller according to the present disclosure;

fig. 3 is a block diagram of one embodiment of an AMF according to the disclosure.

Fig. 4 is a block diagram of another embodiment of an AMF according to the disclosure.

Detailed Description

The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are shown. The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.

Fig. 1 is a flow chart illustrating an embodiment of a discovery method of a near field communication controller according to the present disclosure, as shown in fig. 1:

step 101, AMF (Access and Mobility Management Function, access and mobile management function) receives DDNMF request information sent by a terminal; wherein the DDNMF request information includes at least one Prose (Proximity-based Services) application ID.

In one embodiment, the Prose application may be various, for example, the Prose application is a Device-to-Device (D2D) application, or the like. The DDNMF request information sent by the terminal includes a Prose application ID or a Prose application ID list.

Step 102, if the amf determines that the target DDNMF information corresponding to the Prose application ID is not stored, transmitting DDNMF discovery request information to the NRF (NF Repository Function, network repository function); wherein the DDNMF discovery request information includes a Prose application ID.

In one embodiment, the DDNMF sends registration information when registering with the NRF, which carries one or more Prose application IDs that it supports, and the NRF stores and maintains the registration information. The DDNMF discovery request information sent by the AMF to the NRF carries a Prose application ID or a Prose application ID list.

Step 103, AMF receives DDNMF discovery response information returned by NRF; wherein the DDNMF discovery response information includes target DDNMF information supporting a Prose application ID.

In one embodiment, the NRF establishes a correspondence of a Prose application ID and DDNMF information based on registration information and stores the correspondence. When receiving the DDNMF discovery request information, the NRF acquires a Prose application ID or a Prose application ID list carried in the DDNMF discovery request information.

The NRF determines a Prose application ID matched with one Prose application ID or a Prose application ID list carried in the DDNMF discovery request information and corresponding target DDNMF information according to the corresponding relation, namely, obtains the same Prose application ID as the one Prose application ID or the Prose application ID list carried in the DDNMF discovery request information and corresponding target DDNMF information. The NRF returns DDNMF discovery response information including target DDNMF information supporting the Prose application ID.

And 104, the AMF returns target DDNMF information to the terminal according to the DDNMF response information.

The AMF locally caches target DDNMF information returned by the NRF and corresponding to the Prose application ID in the DDNMF request information sent by the terminal. If the AMF determines that the target DDNMF information corresponding to the Prose application ID is stored, the target DDNMF information is acquired and returned to the terminal, wherein the target DDNMF information comprises information such as an IP address and/or domain name information of the target DDNMF.

Aiming at the problem that a terminal in a multi-DDNMF scene in the prior art cannot find a proper DDNMF and cannot develop near field communication, the present disclosure provides a method for finding a near field communication controller, wherein an AMF finds the proper DDNMF for a terminal agent; based on the discovery method of the near field communication controller, the terminal sends a DDNMF request message to the AMF, the AMF initiates a query to the NRF according to the received Prose application ID, the NRF returns proper DDNMF information, and the AMF returns the received DDNMF information to the terminal; the key problem that the terminal determines the proper DDNMF under the multi-DDNMF scene is solved, and conditions are provided for the development of near field communication.

In one embodiment, the AMF receives a request message sent by the terminal, and obtains DDNMF request information from the request message, where the request message includes a DDNMF request message, a registration request message, or a periodically sent location update message, etc.

The request message sent by the terminal to the AMF may be a new and added single signaling, i.e. the DDNMF request message is a new and added signaling, or the content of the DDNMF request message may be loaded in an existing registration request or a periodically sent update request message, etc. and the request message includes at least one Prose application ID, i.e. a Prose application ID or a Prose application ID list.

The AMF judges whether target DDNMF information corresponding to the Prose application ID (or list) requested by the terminal is cached in the local cache, if so, the stored target DDNMF information is obtained and returned to the terminal; if not, the DDNMF discovery request information is sent to the NRF, wherein the DDNMF discovery request information carries a Prose application ID (or list) sent by the terminal.

The AMF sends a request response message to the terminal, wherein the request response message is used for carrying target DDNMF information, and comprises a DDNMF request response message, a registration response message, a location update response message and the like.

In one embodiment, the NRF receives and stores registration information sent by the DDNMF, the registration information including a Prose application ID supported by the DDNMF; the NRF determines target DDNMF information corresponding to the Prose application ID in the DDNMF discovery request information based on the registration information.

One or more DDNMFs are deployed in the same public land mobile network PLMN, the NRF receives registration information sent by one or more DDNMFs deployed in the PLMN to which the NRF belongs, and a registration request carries a Prose application ID of a Prose application supported by the NRF, a corresponding PLMN ID and the like. Domain information can also be carried in this registration request, which can be used to distinguish between service areas of different DDMNFs within the PLMN; the NRF maintains registration information reported by the DDNMF.

The NRF queries the DDNMF registration information maintained on the DDNMF according to the received DDNMF discovery request information, returns target DDNMF information corresponding to the Prose application ID (or list) in the DDNMF discovery request information to the AMF through a DDNMF discovery response message, wherein the target DDNMF information comprises information such as an IP address and/or a domain name of the DDNMF (or a DDNMF list) supporting the requested Prose application ID (or list).

The AMF returns the target DDNMF information sent by the NRF to the terminal, and the target DDNMF information can be transmitted through a newly added single signaling, that is, the DDNMF request response message is a newly added signaling, or can be transmitted back to the terminal through a registration response message or a periodic location update response message and other messages.

And the terminal accesses the corresponding DDNMF according to the target DDNMF information, acquires the Prose application code corresponding to the Prose application ID, and uses the Prose application code to execute corresponding business operation. The service operation performed by the terminal may be various, for example, performing a terminal discovery procedure of near field communication, finding a relay terminal, or performing a near field communication service by a peer terminal of direct communication.

Fig. 2 is a flow chart of another embodiment of a discovery method of a near field communication controller according to the present disclosure, where the terminal in fig. 2 is an SA terminal, and the SA terminal acquires a DDNMF address in a 5G registration flow at the same time, as shown in fig. 2:

in step 201, the ddnmf sends a registration request to the NRF, carrying its supported Prose application ID list.

In step 202, the nrf returns a registration reply to the DDNMF.

In step 203, the terminal sends a registration request message to the AMF, where the registration request message includes a Prose application ID (DDNMF request information) requested by the terminal.

Step 204, after the amf receives the registration request, the authentication procedure is completed.

In step 205, the amf sends DDNMF discovery request information to the NRF, where the DDNMF discovery request information carries a Prose application ID requested by the terminal.

In step 206, the nrf returns a DDNMF discovery response to the AMF, where DDNMF information (target DDNMF information) corresponding to the Prose application ID of the request is carried.

Step 207, the terminal cooperates with the network to complete the rest registration process. Step 205 and step 206 may also be performed simultaneously with step 207 or after step 207.

And step 208, the AMF returns a registration acceptance message to the terminal, wherein the registration acceptance message carries DDNMF information corresponding to the Prose application ID requested by the terminal.

Step 209, the terminal accesses the corresponding DDNMF and obtains the Prose application code corresponding to the Prose application ID of the request.

Step 210, the UE discovery procedure of near field communication is performed using the Prose application code, and a relay terminal or an opposite terminal of direct communication is found, and then near field communication can be performed.

In one embodiment, as shown in fig. 3, the present disclosure provides an AMF30 comprising a request receiving module 31, a discovery request module 32, and a response receiving module 33. The request receiving module 31 receives the discovery name management function DDNMF request information sent by the terminal, where the DDNMF request information includes at least one Prose application ID.

The discovery request module 32 transmits DDNMF discovery request information including a Prose application ID to the NRF if it is determined that the target DDNMF information corresponding to the Prose application ID is not stored. The response receiving module 33 receives DDNMF discovery response information returned by the NRF, where the DDNMF discovery response information includes target DDNMF information supporting the Prose application ID. The information sending module 34 returns the target DDNMF information to the terminal according to the DDNMF response information.

In one embodiment, the discovery request module 32 obtains and returns target DDNMF information corresponding to the Prose application ID to the terminal if it determines that this target DDNMF information is stored. The request receiving module 31 receives a request message sent by a terminal, and obtains DDNMF request information from the request message, where the request message includes a DDNMF request message, a registration request message, or a periodically sent location update message, etc.

The information sending module 34 sends a request response message to the terminal, where the request response message carries the target DDNMF information, and the request response message includes a DDNMF request response message, a registration response message, or a location update response message.

Fig. 4 is a block diagram of another embodiment of an AMF according to the disclosure. As shown in fig. 4, the apparatus may include a memory 41, a processor 42, a communication interface 43, and a bus 44. The memory 41 is configured to store instructions, and the processor 42 is coupled to the memory 41, the processor 42 being configured to perform a discovery method implementing the above-described near field communication controller based on the instructions stored by the memory 41.

The memory 41 may be a high-speed RAM memory, a nonvolatile memory (non-volatile memory), or the like, and the memory 41 may be a memory array. The memory 61 may also be partitioned and the blocks may be combined into virtual volumes according to certain rules. The processor 42 may be a central processing unit CPU, or an application specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the discovery method of the near field communication controller of the present disclosure.

In one embodiment, the present disclosure provides a communication system comprising an NRF, a DDNMF, and an AMF as in any one of the above embodiments.

In one embodiment, the present disclosure provides a computer readable storage medium storing computer instructions that when executed by a processor implement a method of discovery of a near field communications controller as in any of the above embodiments.

The discovery method, the AMF, the system and the storage medium of the near-field communication controller solve the key problem that the terminal determines the proper DDNMF under the multi-DDNMF scene, can implement the deployment of a plurality of DDNMFs in one PLMN, enhance the networking expansion capability of near-field communication, provide conditions for the development of near-field communication, can be used in a 5G and subsequent evolution mobile communication system (such as 6G and the like), and improve the use experience of users.

The methods and systems of the present disclosure may be implemented in a number of ways. For example, the methods and systems of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, firmware. The above-described sequence of steps for the method is for illustration only, and the steps of the method of the present disclosure are not limited to the sequence specifically described above unless specifically stated otherwise. Furthermore, in some embodiments, the present disclosure may also be implemented as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.

The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A discovery method of a near field communication controller, comprising:

the access and mobile management function AMF receives the request information of the discovery name management function DDNMF sent by the terminal; wherein the DDNMF request information includes: at least one distance-based service Prose application ID;

the AMF sends DDNMF discovery request information to a network warehouse function NRF if determining that target DDNMF information corresponding to the Prose application ID is not stored; wherein the DDNMF discovery request information includes: the Prose application ID;

the AMF receives DDNMF discovery response information returned by the NRF; wherein the DDNMF discovery response information includes: target DDNMF information supporting the Prose application ID;

and the AMF returns the target DDNMF information to the terminal according to the DDNMF response information.

2. The method of claim 1, further comprising:

and if the AMF determines that the target DDNMF information corresponding to the Prose application ID is stored, acquiring the target DDNMF information and returning the target DDNMF information to the terminal.

3. The method of claim 1, the DDNMF request information sent by the AMF receiving terminal includes:

the AMF receives a request message sent by the terminal and acquires the DDNMF request information from the request message; wherein the request message includes: DDNMF request message, registration request message, or periodically transmitted location update message.

4. The method of claim 1, the returning the target DDNMF information to the terminal comprises:

the AMF sends a request response message to the terminal, and the request response message is used for carrying the target DDNMF information; wherein the request response message includes: DDNMF requests response message, registration response message or location update response message.

5. The method of claim 1, further comprising:

the network warehouse function NRF receives and stores registration information sent by the DDNMF; wherein the registration information includes: prose application ID supported by DDNMF;

the NRF determines target DDNMF information corresponding to a Prose application ID in the DDNMF discovery request information based on the registration information.

6. The method of claim 1, further comprising:

and the terminal accesses the corresponding DDNMF according to the target DDNMF information, acquires a Prose application code corresponding to the Prose application ID, and uses the Prose application code to execute corresponding business operation.

7. The method according to claim 1 to 6, wherein,

the target DDNMF information includes: IP address and/or domain name information of the target DDNMF.

8. An access and mobility management function, AMF, comprising:

the request receiving module is used for receiving the request information of the discovery name management function DDNMF sent by the terminal; wherein the DDNMF request information includes: at least one distance-based service Prose application ID;

a discovery request module, configured to send DDNMF discovery request information to a network warehouse function NRF if it is determined that the target DDNMF information corresponding to the Prose application ID is not stored; wherein the DDNMF discovery request information includes: the Prose application ID;

the response receiving module is used for receiving the DDNMF discovery response information returned by the NRF; wherein the DDNMF discovery response information includes: target DDNMF information supporting the Prose application ID;

and the information sending module is used for returning the target DDNMF information to the terminal according to the DDNMF response information.

9. The AMF of claim 8, wherein,

the discovery request module is further configured to acquire the target DDNMF information corresponding to the Prose application ID and return the target DDNMF information to the terminal if it is determined that the target DDNMF information is stored.

10. The AMF of claim 8, wherein,

the request receiving module is used for receiving a request message sent by the terminal and acquiring the DDNMF request information from the request message; wherein the request message includes: DDNMF request message, registration request message, or periodically transmitted location update message.

11. The AMF of claim 8, wherein,

the information sending module is used for sending a request response message to the terminal, and carrying the target DDNMF information through the request response message; wherein the request response message includes: DDNMF requests response message, registration response message or location update response message.

12. The AMF of claim 8, wherein,

the NRF receives and stores the registration information sent by the DDNMF; wherein the registration information includes: prose application ID supported by DDNMF;

13. The AMF as claimed in any one of claims 8 to 12, wherein,

14. An AMF, comprising:

a memory; and a processor coupled to the memory, the processor configured to perform the method of any of claims 1-7 based on instructions stored in the memory.

15. A communication system, comprising:

NRF, DDNMF and AMF according to any one of claims 8 to 14.

16. A computer readable storage medium storing computer instructions for execution by a processor of the method of any one of claims 1 to 7.