Satellite Service Request Backoff for Area-Based Access Rejection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In satellite communication scenarios, terminal devices continuously send registration or PDU session establishment requests due to lack of tracking area information, leading to high power consumption and network load.
Innovation Solution
A communication method where a mobility management network element provides a parameter in response to a rejected request, indicating a distance or time for the terminal device to wait before resending the request, thereby reducing unnecessary transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device continuously sends registration request information or PDU session establishment request information to the AMF when the request is rejected, then the terminal device can attempt to establish service connection, but the power consumption of the terminal device becomes high
Solution Approach 1:
The patent implements periodic action by introducing a backoff mechanism where the terminal device waits for a predetermined time period before sending the next registration request or PDU session establishment request after receiving a rejection response. This converts continuous transmission into periodic transmission, reducing power consumption while maintaining service connection attempts.
2Reliability
If the terminal device continuously sends registration request information or PDU session establishment request information to the AMF when the request is rejected, then the terminal device can attempt to establish service connection, but the network load increases
Solution Approach 1:
The patent applies periodic action by implementing a backoff mechanism that spaces out transmission attempts. After receiving a rejection response, the terminal device waits for a predetermined time period before attempting again, converting continuous network traffic into periodic traffic, thereby reducing network load while preserving service connection opportunities.
3Adaptability or versatility
If no TA information is obtained in satellite communication scenario, then the terminal device cannot determine area restrictions, but the terminal device sends continuous requests leading to high power consumption
Solution Approach 1:
The patent applies preliminary action by having the network side (AMF) determine area restrictions and service availability in advance, then communicate this information to the terminal device through rejection responses with backoff indicators. This allows the terminal device to adapt to area restrictions without needing to continuously query or determine restrictions itself, reducing power consumption while maintaining adaptability.
Data Source
AI summary
A communication method is disclosed. According to the method, a mobility management network element obtains request information and position information of a terminal device from an access network device, where the request information is used by the terminal device to request to perform a service, and the position information indicates a position of the terminal device when the request information is sent. Upon determining that the position is in an area where performing of the service is forbidden, the mobility management network element may reject the request information, and send response information indicating that the request information is rejected to the terminal device through the access network device, where the response information includes a parameter used by the terminal device to determine the timing for sending another piece of request information for requesting to perform the service. Through the technical solution, power consumption of the terminal device can be reduced.