Sidelink Ranging Timing Control for Precise UE Positioning
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Solution Overview
Problem
Existing wireless communication systems, particularly in the context of 5G, face challenges in efficiently utilizing sidelink-based positioning for accurate vehicle-to-everything (V2X) communication, especially in scenarios where direct communication between vehicles and infrastructure is required without relying on base station involvement.
Innovation Solution
Implementing sidelink ranging sessions with defined parameters for duration of time allocations in UE-to-UE communication, including a first duration for a session initiator to receive a response and a second duration for a session responder to confirm, enabling precise timing for sidelink-based positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If sidelink-based positioning is implemented without base station scheduling, then autonomy and direct communication capability are improved, but timing synchronization and positioning accuracy deteriorate
Solution Approach 1:
The patent applies preliminary action by having the session initiator pre-allocate time resources and define timing parameters (first duration for response reception, second duration for confirmation) before the positioning session begins. This pre-planning of time allocations enables autonomous operation while maintaining synchronization, resolving the contradiction between automation and positioning accuracy.
2Reliability
If time allocations are extended to ensure reliable response and confirmation exchange, then communication reliability is improved, but positioning response time and efficiency deteriorate
Solution Approach 1:
The patent applies parameter changes by dynamically configuring time allocation parameters (first duration and second duration) based on session requirements. The session initiator can adjust these parameters to optimize the balance between reliable communication and fast positioning response, resolving the contradiction between reliability and time efficiency.
3Adaptability or versatility
If multiple sidelink ranging sessions are conducted simultaneously with flexible time allocations, then positioning coverage and functionality are improved, but resource conflicts and interference increase
Solution Approach 1:
The patent applies segmentation by dividing the time domain into distinct, non-overlapping time allocations for different sidelink ranging sessions. Each session is assigned specific time resources (first duration and second duration) that are separated from other sessions, eliminating resource conflicts while maintaining flexible positioning functionality across multiple UEs.
Data Source
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AI summary
Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) may determine a set of one or more parameters for sidelink ranging sessions among session participants comprising a session initiator and at least one session responder, wherein the set of one or more parameters comprises: a first parameter indicating a first duration of time that a sidelink ranging session initiator allocates to receive, from a session responder, a response to a session request; and a second parameter indicating a second duration of time that a session responder allocates to receive a session confirmation from a session initiator after issuing, to the session initiator, a response to a session request. The UE may establish a sidelink ranging session according to the set of one or more parameters.