CN-122002632-A - Information transmission method, session management function and proxy call session control function

Abstract

The present disclosure relates to the field of wireless communication technology, and in particular, to an information transmission method, a session management function, a proxy call session control function, a communication apparatus, a computer readable storage medium, and a computer program product. The information transmission method comprises the step of sending network side information associated with the media of the user equipment to a proxy call session control function (P-CSCF).

Inventors

• QI WEN
• NIE HENG
• ZONG JIAYING
• WANG HENG

Assignees

• 中国电信股份有限公司技术创新中心
• 中国电信股份有限公司

Dates

Publication Date

20260508

Application Date

20241107

Claims (20)

1. 1. An information transmission method performed by a session management function SMF, comprising: Network side information associated with the user equipment media is sent to the proxy call session control function P-CSCF.
2. 2. The information transmission method of claim 1, wherein transmitting network side information associated with the user equipment media to the proxy call session control function P-CSCF comprises: receiving a request for the network side information from a P-CSCF, the request including at least one of information specifying user equipment and information of data traffic; and sending the network side information to the P-CSCF in response to the request.
3. 3. The information transmission method of claim 2, wherein the information specifying the user equipment includes: at least one of the ID of the specified user equipment and the IP of the specified user equipment.
4. 4. The information transmission method of claim 2, wherein the information of the data traffic includes: At least one of a data network name, a slice identification.
5. 5. The information transmission method of claim 1, wherein transmitting network side information associated with the user equipment media to the proxy call session control function P-CSCF comprises: In case of performing user equipment UE-satellite-user equipment UE mode communication based on user plane function UPF, said network side information is sent to the P-CSCF.
6. 6. The information transmission method according to claim 5, further comprising: And receiving parameters indicating to execute UPF-based UE-satellite-UE mode communication or user equipment information of both parties of the call sent by the P-CSCF.
7. 7. The information transmission method of claim 1, wherein transmitting network side information associated with the user equipment media to the proxy call session control function P-CSCF comprises: The network side information is sent to the P-CSCF through SMF service operation or sent to the P-CSCF through policy control function PCF service operation.
8. 8. The information transmission method of claim 1, wherein transmitting network side information associated with the user equipment media to the proxy call session control function P-CSCF comprises: And responding to the resource reservation request of the P-CSCF, and sending a response to the resource reservation request to the P-CSCF, wherein the response comprises the network side information.
9. 9. The information transmission method of claim 1, wherein transmitting network side information associated with the user equipment media to the proxy call session control function P-CSCF comprises: And responding to the request of the P-CSCF for influencing the route, and sending a response to the request for influencing the route to the P-CSCF, wherein the response comprises the network side information.
10. 10. The information transmission method of claim 1, wherein transmitting network side information associated with the user equipment media to the proxy call session control function P-CSCF comprises: and sending the network side information to the P-CSCF under the condition that the network side information associated with the user equipment media changes.
11. 11. The information transmission method of claim 2, wherein receiving the request for the network side information from the P-CSCF comprises: receiving a resource reservation request from the P-CSCF, the resource reservation request comprising a request for the network side information, or Receiving a request for influencing the route from the P-CSCF, wherein the request for influencing the route comprises a request for the network side information, or And receiving an access information request from the P-CSCF, wherein the access information request comprises a request for the network side information.
12. 12. The information transmission method of claim 2, wherein transmitting the network side information to the P-CSCF comprises: and sending the information of the appointed user equipment and the network side information to the P-CSCF under the condition that the network side information is changed.
13. 13. The information transmission method according to any one of claims 1 to 12, wherein the network-side information associated with the user equipment media includes at least one of user plane function UPF information associated with the user equipment UE, SMF information associated with the UE, session information associated with the UE.
14. 14. The information transmission method of claim 13, wherein the UPF information associated with the UE includes at least one of a UPF identification, a UPF address.
15. 15. The information transmission method of claim 13, wherein the SMF information associated with the UE includes at least one of an SMF identification and an SMF address.
16. 16. The information transmission method of claim 13, wherein the session information associated with the UE includes at least one of a tunnel identity, a port number, a quality of service QoS flow identity, and an N4 session identity.
17. 17. An information transmission method performed by a proxy call session control function P-CSCF, comprising: network side information associated with the user equipment media is received from the session management function SMF.
18. 18. The information transmission method of claim 17, wherein receiving network side information associated with the user equipment media from the session management function SMF comprises: Sending a request for the network side information to an SMF, wherein the request comprises at least one of information specifying user equipment and information of data traffic; And receiving the network side information sent by the SMF in response to the request.
19. 19. The information transmission method of claim 17, wherein receiving network side information associated with the user equipment media from the session management function SMF comprises: In case of performing user equipment UE-satellite-user equipment UE mode communication based on user plane function UPF, the network side information is received from the SMF.
20. 20. The information transmission method according to claim 19, further comprising: And sending parameters indicating to perform UPF-based UE-satellite-UE mode communication or user equipment information of both parties of the call to the SMF.

Description

Information transmission method, session management function and proxy call session control function Technical Field The present disclosure relates to the field of wireless communication technology, and in particular, to an information transmission method, a session management function, a proxy call session control function, a communication apparatus, a computer readable storage medium, and a computer program product. Background With the development of wireless communication technologies, more and more subsystems for providing services to a 5G core network in a communication system, for example, IMS (IP Multimedia Subsystem ) can provide multimedia services in the 5G network. The core of the IMS technology is to adopt an IP-based network architecture, realize the separation of call control and service control through SIP (Session Initiation Protocol ), and support various multimedia services including voice, video, instant messaging and the like. In some application scenarios of IMS technology, for example, when a User Equipment (UE) performs satellite communication, a proxy call session control function (P-CSCF) in IMS may need to control data such as voice or video transmitted by a satellite, so as to implement functions such as legal interception, data retention, and so on. In the related art, the P-CSCF does not have related information on the network side, particularly related information of a User Plane Function (UPF) responsible for data transmission, and operations such as UPF identification, user data extraction and the like cannot be accurately performed, so that the efficiency and flexibility of communication are affected. Disclosure of Invention In the related art, during communication, the P-CSCF does not have related information on the network side, which affects the efficiency and flexibility of communication. In view of this, the present disclosure provides an information transmission method capable of effectively solving the above-described problems. According to an aspect of the present disclosure, there is provided an information transfer method performed by a session management function, SMF, comprising sending network side information associated with a user equipment media to a proxy call session control function, P-CSCF. In some embodiments, sending network side information associated with user equipment media to a proxy call session control function, P-CSCF, comprises receiving a request for the network side information from the P-CSCF, the request comprising at least one of information specifying user equipment, data traffic information, and sending the network side information to the P-CSCF in response to the request. In some embodiments, the information specifying the user equipment includes at least one of an ID of the specifying the user equipment, and an IP of the specifying the user equipment. In some embodiments, the information of the data traffic includes at least one of a data network name, a slice identifier. In some embodiments, sending network side information associated with user equipment media to a proxy call session control function, P-CSCF, includes sending the network side information to the P-CSCF in the event that user equipment, UE-satellite-user equipment, UE, mode communication based on user plane function, UPF, is performed. In some embodiments, the information transmission method further comprises receiving parameters or user equipment information of both parties of the call, which are sent by the P-CSCF and indicate to perform UPF-based UE-satellite-UE mode communication. In some embodiments, sending network side information associated with the user equipment media to the proxy call session control function, P-CSCF, includes sending the network side information to the P-CSCF through an SMF service operation or sending the network side information to the P-CSCF through a policy control function, PCF, service operation. In some embodiments, sending network side information associated with a user equipment medium to a proxy call session control function, P-CSCF, comprises sending a response to a resource reservation request to the P-CSCF in response to the resource reservation request, the response comprising the network side information. In some embodiments, sending network side information associated with user equipment media to a proxy call session control function, P-CSCF, includes sending a response to a request for an affected route to the P-CSCF in response to the request for the affected route, the response including the network side information. In some embodiments, sending network side information associated with the user equipment media to the proxy call session control function, P-CSCF, includes sending the network side information to the P-CSCF in the event that the network side information associated with the user equipment media changes. In some embodiments, receiving a request for the network side information from a P-CSCF includes receiving a