JP-7856859-B1 - Communication methods, devices, equipment, systems, chips, and storage media

Abstract

This disclosure proposes a communication method, apparatus, device, system, chip, and storage medium, wherein, when a first terminal requests to make an IMS call with a second terminal, a first network element determines whether the first terminal and the second terminal are connected to the same satellite equipped with a first UPF, and if it determines that the first terminal and the second terminal are connected to the same satellite, it transmits an instruction message to the second network element indicating that the conditions for making an IMS call via satellite are met. As a result, the second network element can easily know through the instruction message that the conditions for making an IMS call via satellite are met, and furthermore, the first terminal and the second terminal can make an IMS call directly via satellite, reducing the transmission delay when the first terminal and the second terminal make an IMS call via the satellite communication network, and improving the call efficiency between them. [Selection Diagram] Figure 2

Inventors

• シャオ ホン
• ウー ハオ

Assignees

• チャイナ サテライト ネットワーク エクスプロレーション カンパニー リミテッド

Dates

Publication Date

20260511

Application Date

20241104

Priority Date

20240322

Claims (12)

1. A communication method applicable to the Proxy Call Session Control Function (P-CSCF) , The steps include receiving a first session invitation request corresponding to a first terminal for requesting to make an Internet Protocol Multimedia Subsystem (IMS) call with a second terminal, The steps include sending a second location query request to the policy control function (PCF) to request location information of the second terminal, A step of receiving a second location query response message, which includes location information of the second terminal, returned from the PCF, wherein the location information of the second terminal includes the satellite identifier of the satellite to which the second terminal is connected. A step of determining, based on the location information of the first terminal and the location information of the second terminal, that the first terminal and the second terminal are connected to the same satellite having a first user plane function (UPF) , wherein the location information of the first terminal includes the satellite identifier of the satellite to which the first terminal is connected . A communication method characterized by including the step of sending an instruction message to the PCF to indicate that the conditions for conducting an IMS call between the first terminal and the second terminal via the satellite are met.
2. The communication method according to claim 1, characterized in that a message triggering the establishment of a Quality of Service Flow (QoS Flow) of the second terminal, including the instruction message, is sent to the PCF .
3. The communication method according to claim 2, characterized in that the message that triggers the establishment of the QoS Flow of the second terminal further includes the method of calling the IMS call, wherein the method of calling is either an IMS voice call or an IMS video call.
4. The aforementioned communication method is, A step of receiving a second QoS Flow establishment completion message transmitted from the PCF, wherein the second QoS Flow establishment completion message indicates the completion of the establishment of the QoS Flow of the second terminal, and the second QoS Flow establishment completion message includes address information of the first UPF, The communication method according to claim 2, further comprising the step of transmitting the address information of the first UPF to the second terminal.
5. The communication method according to claim 1, characterized in that the instruction message includes identifier information for the first terminal and identifier information for the second terminal.
6. The communication method according to claim 1 , characterized in that the first session invitation request includes location information of the first terminal.
7. The first session invitation request includes location information of the first terminal, and the communication method is The steps include sending a second session invitation request to the second terminal, which includes a location information request message instructing the second terminal to provide location information of the second terminal, The communication method according to claim 1 , further comprising the step of receiving a response message returned from the second terminal, which includes location information of the second terminal.
8. The aforementioned communication method is, If the first session invitation request does not include the location information of the first terminal, the PCF sends a location query request to request at least one of the location information of the first terminal and the location information of the second terminal. The communication method according to claim 1, comprising the step of receiving a location query response message that includes at least one of the location information of the first terminal and the location information of the second terminal, returned from the PCF .
9. A communication device comprising memory, a processor, and a computer program stored in memory that is executable by the processor, A communication device characterized in that when the processor executes the computer program, the communication method described in any one of claims 1 to 8 is implemented.
10. A chip comprising one or more interface circuits and one or more processors, wherein the interface circuits are used to receive signals from the memory of a communication device and to transmit the received signals, including computer instructions stored in the memory, to the processor, and when the processor executes the computer instructions, the communication device implements the communication method described in any one of claims 1 to 8 .
11. A computer-readable storage medium in which computer execution instructions are stored, wherein when the computer execution instructions are executed by a processor, the communication method described in any one of claims 1 to 8 is implemented.
12. A computer program characterized in that, when the computer program is executed by a processor, the communication method described in any one of claims 1 to 8 is implemented.

Description

This disclosure relates to the field of satellite communications technology, and more specifically to communication methods, apparatus, devices, systems, chips, and storage media. Currently, after the introduction of Internet Protocol Multimedia Subsystem (IMS) calling to satellite communication networks, when an IMS call is typically made between a first terminal and a second terminal, the media plane data transmission path is as follows: First terminal → Satellite → Ground User Plane Function (UPF) → Calling side Session Border Controller (SBC) → Called side SBC → Ground UPF → Satellite → Second terminal. However, because the transmission path for IMS calls between the first and second terminals is long, the call efficiency is low when the first and second terminals make IMS calls via the satellite communication network. The above and/or additional aspects and advantages of this disclosure will become apparent and readily apparent from the following description of the embodiments in conjunction with the accompanying drawings. This is a schematic diagram of the architecture of a satellite communication system provided by the embodiments of this disclosure. This is a flowchart of one communication method provided by an embodiment of the present disclosure. This is a flowchart of another communication method provided by the embodiments of this disclosure. This is a flowchart of another communication method provided by the embodiments of this disclosure. This is a flowchart of another communication method provided by the embodiments of this disclosure. This is a flowchart of another communication method provided by the embodiments of this disclosure. This is a flowchart of another communication method provided by the embodiments of this disclosure. This is a flowchart of another communication method provided by the embodiments of this disclosure. This is a flowchart of another communication method provided by the embodiments of this disclosure. This is a flowchart of another communication method provided by the embodiments of this disclosure. This is a flowchart of another communication method provided by the embodiments of this disclosure. This is a flowchart of another communication method provided by the embodiments of this disclosure. This is a flowchart of another communication method provided by the embodiments of this disclosure. This is a flowchart of another communication method provided by the embodiments of this disclosure. This is a flowchart of another communication method provided by the embodiments of this disclosure. This is a flowchart of another communication method provided by the embodiments of this disclosure. This is a schematic diagram of the structure of a communication device provided by the embodiments of this disclosure. This is a schematic diagram of the structure of a communication device provided by the embodiments of this disclosure. This is a schematic diagram of the structure of a communication device provided by the embodiments of this disclosure. This is a schematic diagram of the structure of a communication device provided by the embodiments of this disclosure. This is a schematic diagram of the structure of a communication device provided by the embodiments of this disclosure. This is a schematic diagram of the structure of a communication device provided by the embodiments of this disclosure. This is a schematic diagram of the structure of a communication system provided by the embodiments of this disclosure. This is a schematic diagram 1 showing the flow of interaction between the first terminal, the second terminal, the P-CSCF (Proxy Call Session Control Function) network element, the PCF (Policy Control Function) network element, the SMF (Session Management Function) network element, and the first UPF on the satellite. This is a schematic diagram 2 showing the flow of interaction between the first terminal, the second terminal, the P-CSCF network element, the PCF network element, the SMF network element, and the first UPF on the satellite. This is a schematic diagram 3 showing the flow of interaction between the first terminal, the second terminal, the P-CSCF network element, the SMF network element, the PCF network element, and the first UPF on the satellite. This is a schematic diagram 4 of the interaction flow between the first terminal, the second terminal, the P-CSCF network element, the SMF network element, the PCF network element, and the first UPF on the satellite. This is a block diagram of communication equipment for implementing a communication method shown in one exemplary embodiment. This is a schematic diagram of the chip structure as shown in one exemplary embodiment. The following describes embodiments of this disclosure in detail, with examples of these embodiments shown in the drawings. The same or similar reference numerals in the drawings from beginning to end indicate the same or similar components, or components having the same or similar functio