On-Demand Positioning Reference Signal Configuration
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Solution Overview
Problem
In existing communication systems, positioning reference signals are transmitted periodically, leading to resource wastage as they are sent even when not needed, affecting system efficiency and resource allocation.
Innovation Solution
A system and method for configuring and managing on-demand positioning reference signals, where access nodes transmit signals only when requested, allowing for precise selection of nodes based on user equipment position estimates, reducing unnecessary transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If positioning reference signals are transmitted periodically by base stations, then user equipment can continuously measure time differences for position determination, but communications system resources are wasted when positioning is not needed
Solution Approach 1:
The patent implements dynamic positioning reference signal transmission by allowing user equipment to send positioning requests and base stations to transmit signals only when needed. This transforms the static periodic transmission model into a dynamic on-demand model, where transmission occurs only during positioning events, thereby eliminating resource waste while maintaining position determination capability.
Solution Approach 2:
The system enables self-service positioning where user equipment autonomously determines when positioning is needed and requests signals accordingly. The base station responds to these requests by transmitting positioning reference signals only when required, making the system self-regulating and eliminating unnecessary transmissions that waste resources.
2Measurement precision
If positioning reference signals are transmitted periodically with configured periodicity and duration, then position measurement can be performed, but system efficiency decreases due to unnecessary transmissions
Solution Approach 1:
The patent modifies the periodic action principle by replacing continuous periodic transmission with event-driven periodic transmission. Instead of transmitting signals at fixed intervals regardless of need, the system transmits positioning reference signals periodically only when positioning events occur, maintaining measurement precision while improving system efficiency by eliminating unnecessary transmissions during non-positioning periods.
3Reliability
If base stations transmit positioning reference signals continuously, then user equipment can always determine position, but resource allocation becomes inefficient
Solution Approach 1:
The system implements preliminary action by having user equipment prepare and send positioning requests before actual positioning is needed. The base station receives these advance requests and transmits positioning reference signals at the appropriate time, ensuring position availability is maintained while resources are allocated efficiently based on actual demand rather than continuous transmission.
Data Source
AI summary
A method for operating a device includes selecting a set of access nodes in accordance with a first estimated position of a user equipment (UE), sending, to the set of access nodes, a first message to activate positioning signal transmission, sending, to the UE, a request for position measurement information, and receiving, from the UE, the position measurement information.