CN121012563A

CN121012563A - Satellite terminal power saving method, satellite terminal, service base station and satellite communication system

Info

Publication number: CN121012563A
Application number: CN202511343583.2A
Authority: CN
Inventors: 祝仰伟; 王江; 尚丹
Original assignee: Hanque Chengdu Information Technology Co ltd; Chengdu Zhongke Micro Information Technology Research Institute Co Ltd
Current assignee: Hanque Chengdu Information Technology Co ltd; Chengdu Zhongke Micro Information Technology Research Institute Co Ltd
Priority date: 2025-09-19
Filing date: 2025-09-19
Publication date: 2025-11-25

Abstract

The invention relates to the technical field of satellite communication and provides a satellite terminal power saving method, a satellite terminal, a service base station and a satellite communication system, wherein the method comprises the steps that the satellite terminal judges that the satellite terminal has no data service and supports the power saving function and sends a release request to the service base station; the service base station judges that the satellite terminal has no data service and supports the power saving function after receiving the release request, replies a release command to the satellite terminal, and normally releases resources after receiving the release command. In the invention, the satellite terminal actively transmits the release request to the service base station when judging that no service is transmitted and the power saving/power saving priority is needed, and the service base station judges that no service is available after receiving the release request of the satellite terminal and the satellite terminal immediately releases the satellite terminal when supporting the power saving function, thereby saving the invalid power consumption caused by overtime of the inactivity timer waiting for the UE.

Description

Satellite terminal power saving method, satellite terminal, service base station and satellite communication system

Technical Field

The invention relates to the technical field of satellite communication, in particular to a satellite terminal power saving method, a satellite terminal, a service base station and a satellite communication system.

Background

1. In the existing satellite communication system, a base station side controls release of a satellite terminal by starting a UE (User Equipment) inactivity timer. The UE inactivity timer is a timer that the base station monitors whether the satellite terminal transmits and receives data. If the satellite terminal has not received and transmitted data for the duration of the timer, the timer times out to release the satellite terminal.

2. Compared with a ground operator base station, the satellite load is far away from the ground, and the channel environment is complex, so that the transmitting power of a satellite terminal is often higher, the terminal power consumption is higher, and the energy conservation of the satellite terminal faces a more severe challenge.

Based on the above two points, in the current satellite communication system, the normal release of the satellite terminal no-data service is one-way release determined by the UE inactivity timer at the base station side, if the UE inactivity timer is set longer (in minutes), the satellite terminal can only release after the UE inactivity timer is overtime even if the satellite terminal judges that no data service exists. The long-time release waiting inevitably brings extra invalid power consumption to the satellite terminal, and influences the energy-saving effect of the terminal.

Disclosure of Invention

The invention aims to provide a satellite terminal power saving method, a satellite terminal, a service base station and a satellite communication system, which are used for solving the problem that the satellite terminal in the satellite communication system can only release the invalid power consumption caused by overtime of a UE inactivity timer even though no data service exists.

In a first aspect, the present invention provides a satellite terminal power saving method, including:

The satellite terminal judges that the satellite terminal has no data service and supports the power saving function, and sends a release request to the service base station;

after receiving the release request, the service base station judges that the satellite terminal has no data service and supports the power saving function, and replies a release command to the satellite terminal;

and the satellite terminal normally releases the resources after receiving the release command.

In a preferred embodiment, the release request and release command carry a release cause for power saving.

In a preferred embodiment, the release factor is defined by power saving is newly added by enabling reserved bits in the control PDU descriptor.

In a preferred embodiment, the state after the satellite terminal normally releases the resources is changed to power saving.

In a preferred embodiment, the definition of satellite terminal status as power saving is newly added by enabling reserved bits in the TIM-U descriptor.

In a preferred embodiment, the serving base station stops the UE inactivity timer after replying to the release order from the satellite terminal.

In a second aspect, the present invention provides a satellite terminal for:

Judging that the service base station has no data service and supports the power saving function, and sending a release request to the service base station;

and normally releasing the resources after receiving the release command replied by the service base station.

In a preferred embodiment, the satellite terminal is further configured to:

Changing the state to power saving after normal release of resources.

In a third aspect, the present invention is a serving base station, where the serving base station is configured to:

Judging that the satellite terminal has no data service and supports the power saving function after receiving the release request from the satellite terminal, and replying a release command to the satellite terminal;

and stopping the UE inactivity timer after replying the release command to the satellite terminal.

In a fourth aspect, the present invention provides a satellite communication system, including a satellite terminal and a service base station, where the satellite terminal and the service base station are configured to execute the above-mentioned satellite terminal power saving method.

In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:

In the invention, the satellite terminal actively transmits the release request to the service base station when judging that no service is transmitted and the power saving/power saving priority is needed, and the service base station judges that no service is available after receiving the release request of the satellite terminal and the satellite terminal immediately releases the satellite terminal when supporting the power saving function, thereby saving the invalid power consumption caused by overtime of the inactivity timer waiting for the UE.

Drawings

Fig. 1 is a flowchart of a satellite terminal power saving method according to an embodiment of the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

The method aims at solving the problem of invalid power consumption caused by the fact that a satellite terminal in a satellite communication system can only release a UE inactivity timer after the UE inactivity timer is overtime even if no data service exists. As shown in fig. 1, the present embodiment provides a satellite terminal power saving method, which includes the following steps:

Step 1, a satellite terminal judges that the satellite terminal has no data service and supports a power saving function, and sends a release request to a service base station;

Step 2, after receiving the release request, the service base station judges that the satellite terminal has no data service and supports the power saving function, and replies a release command to the satellite terminal;

and step 3, the satellite terminal normally releases the resources after receiving the release command.

That is, the satellite terminal is first configured to support a power saving function, or power saving priority. When the satellite terminal has no data service, the satellite terminal sends a release request to the service base station and normally releases resources after receiving a release command replied by the service base station, so that the purpose of saving electricity by releasing the resources without waiting for the timeout of the UE inactivity timer is achieved.

In the process of interaction between the satellite terminal and the service base station, the release request and the release command carry the release reason for saving electricity. The release request sent by the satellite terminal to the serving base station is implemented based on the RRC connection carried by the control PDU. In this embodiment, the definition of the release cause is power saving is newly added by enabling reserved bits in the control PDU descriptor. As shown in table 1, reserved bits, bit9, in the control PDU descriptor are enabled.

Table 1, the new release factor is defined in the control PDU descriptor for power saving:

Accordingly, the state of the satellite terminal after normally releasing the resources is changed into power saving. In this embodiment, the definition of the satellite terminal state as power saving is newly added by enabling reserved bits in the TIM-U descriptor. As shown in table 2, reserved bits, bit11, in the TIM-U descriptor are enabled.

Table 2, the state of the newly added satellite terminal in the TIM-U descriptor is defined as power saving:

in the interaction process between the satellite terminal and the service base station, the service base station is configured with a UE inactivity timer, and the UE inactivity timer is set longer, usually in the order of minutes. The invention reserves the function of the UE inactivity timer, and only adds the function of saving electricity of the satellite terminal on the basis. After the service base station replies the release command to the satellite terminal, the UE inactivity timer is stopped. That is, the satellite terminal has priority in power saving, and the UE inactivity timer does not need to be run after the resources are normally released.

Example 2

As shown in fig. 1, the present embodiment provides a satellite terminal for:

Corresponding to the description in embodiment 1, the satellite terminal changes the state to power saving after releasing the resources normally. The functional principle of the satellite terminal may be described in embodiment 1, and will not be described herein.

Example 3

As shown in fig. 1, the present embodiment provides a serving base station, which is configured to:

after receiving the release request from the satellite terminal, judging that the satellite terminal has no data service and supports the power saving function, and replying a release command to the satellite terminal.

Corresponding to the description of embodiment 1, the serving base station stops the UE inactivity timer after replying the release command to the satellite terminal. The functional principle of the serving base station may be described in embodiment 1, and will not be described herein.

Example 4

As shown in fig. 1, the present embodiment provides a satellite communication system including a satellite terminal and a service base station for performing the satellite terminal power saving method described in embodiment 1.

The functional principles of the satellite terminal and the serving base station may be referred to the description in embodiment 1, and will not be described herein.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A power-saving method for a satellite terminal, characterized in that it includes:

The satellite terminal determines that it has no data service and supports power saving function, and sends a release request to the serving base station;

After receiving the release request, the serving base station determines that the satellite terminal has no data service and supports power saving function, and replies to the satellite terminal with a release command;

The satellite terminal released the resources normally after receiving the release command.

2. The satellite terminal power-saving method according to claim 1, wherein the release request and release command carry the release reason as power saving.

3. The satellite terminal power-saving method according to claim 2, characterized in that a definition for power saving as the release reason is added by enabling reserved bits in the control PDU descriptor.

4. The satellite terminal power-saving method according to claim 1, characterized in that the satellite terminal changes to power-saving mode after normally releasing resources.

5. The satellite terminal power-saving method according to claim 4, characterized in that a new definition of the satellite terminal state as power-saving is added by enabling reserved bits in the TIM-U descriptor.

6. The power-saving method for satellite terminals according to claim 1, characterized in that, after the serving base station replies to the satellite terminal with a release command, it stops the UE inactivity timer.

7. A satellite terminal, characterized in that the satellite terminal is used for:

If it determines that it has no data service and supports power saving function, it sends a release request to the serving base station.

And, resources are released normally after receiving a release command from the serving base station.

8. The satellite terminal according to claim 7, wherein the satellite terminal is further configured to:

After releasing resources normally, change the status to power saving.

9. A serving base station, characterized in that the serving base station is used for:

Upon receiving a release request from the satellite terminal, it determines that the satellite terminal has no data service and supports power saving function, and replies with a release command to the satellite terminal;

Additionally, after replying to the satellite terminal with a release command, the UE inactivity timer is stopped.

10. A satellite communication system, characterized in that it includes a satellite terminal and a serving base station; the satellite terminal and the serving base station are used to execute the satellite terminal power-saving method as described in any one of claims 1-6.