On-Demand PRS Request via MO-LR Message for Positioning Delay Reduction
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Solution Overview
Problem
In communication systems, there is a need to efficiently send on-demand positioning reference signal (PRS) requests from user equipment (UE) to network-side devices via mobile original-location request (MO-LR) messages, as existing methods lack clarity on how to carry the PRS request and determine the appropriate reply mechanism, leading to positioning delays.
Innovation Solution
The method involves the UE sending an on-demand PRS request and auxiliary information to the network-side device via a MO-LR request message, where the auxiliary information, such as rough location, reference signal quality, or line of sight information, is used by the network-side device to determine and send corresponding PRS configuration information, ensuring the PRS configuration information is accurately requested and received.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If UE sends on-demand PRS request via MO-LR request message, then positioning speed is improved, but clarity of request carrying method and reply mechanism determination is worsened
Solution Approach 1:
The patent introduces an intermediary mechanism where the network-side device determines the reply mechanism based on pre-configured correspondence between MO-LR request messages and reply mechanisms. This intermediary layer resolves the ambiguity in carrying PRS requests by establishing a clear mapping relationship between the request message format and the appropriate reply mechanism, thereby maintaining positioning speed while improving clarity.
2Loss of time
If existing methods are used for sending PRS requests, then system complexity is reduced, but positioning delay increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the correspondence between MO-LR request messages and reply mechanisms in the network-side device. This allows the system to quickly determine the appropriate reply mechanism without complex real-time decision-making, thereby reducing positioning delay while maintaining manageable system complexity through advance preparation.
3Productivity
If PRS configuration information is not accurately requested and received, then communication simplicity is maintained, but positioning efficiency deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the network-side device sends reply messages based on the determined reply mechanism, providing feedback to the UE about the PRS configuration information. This feedback loop ensures accurate request and response handling, improving positioning efficiency while maintaining communication simplicity through structured feedback protocols.
Data Source
AI summary
An on-demand positioning reference signal (PRS) request method. The method includes: sending at least one of an on-demand PRS request or auxiliary information to a network-side device via a mobile original-location request (MO-LR) request message; and receiving PRS configuration information sent based on the MO-LR request message by the network-side device.