UE Positioning Assistance Request Backoff Mechanism
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in handling repeated requests for positioning assistance from user equipment (UE) due to the inability of location servers to provide immediate assistance, leading to delayed or failed positioning services, especially in high-load network conditions.
Innovation Solution
A method where the user equipment (UE) transmits a first request for positioning assistance and, upon receiving a message indicating the location server's unavailability, waits for a reattempt time before sending a second request, allowing for efficient resource management and reduced network overload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the location server immediately responds to positioning assistance requests, then the responsiveness and user experience are improved, but the network overload and server unavailability increase under high-load conditions
Solution Approach 1:
The patent implements periodic action by introducing a backoff mechanism where UEs wait for a predetermined time period before sending repeated positioning assistance requests. This timing-based control regulates the frequency of requests, preventing continuous flooding of the location server while maintaining periodic communication attempts, thus balancing responsiveness with server availability under high-load conditions
Solution Approach 2:
The patent applies feedback by having the location server send a message to the UE indicating that it is currently unavailable. This feedback signal triggers the UE to implement the backoff procedure, creating a closed-loop control system where the server's capacity state directly influences UE request behavior, thereby preventing overload while maintaining service responsiveness
2Reliability
If the UE sends repeated positioning assistance requests without delay, then the positioning service reliability is improved, but the network resources are wasted and overload increases
Solution Approach 1:
The patent implements periodic action by introducing a backoff mechanism where UEs wait for a predetermined time period before sending repeated positioning assistance requests. This timing-based control regulates the frequency of requests, preventing continuous flooding of the location server while maintaining periodic communication attempts, thus balancing responsiveness with server availability under high-load conditions
Solution Approach 2:
The patent applies self-service by enabling the UE to autonomously manage its request timing based on received feedback. The UE automatically implements the backoff procedure when instructed by the location server, without requiring additional network intervention or complex centralized control, thereby reducing network resource consumption while maintaining service reliability
Data Source
AI summary
Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) transmits a first request assistance data message to a location server, the first request assistance data message comprising a request for first positioning assistance, receives a provide assistance data message from the location server, the provide assistance data message indicating that the location server is not currently able to provide the first positioning assistance, and transmits a second request assistance data message to the location server after expiration of a reattempt time from reception of the provide assistance data message, the second request assistance data message indicating a request for second positioning assistance, wherein the first positioning assistance is not received by the UE prior to the reattempt time.