Sidelink Resource Coordination for Out-of-Coverage Positioning
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Solution Overview
Problem
Conventional wireless positioning systems face challenges in resource allocation for positioning reference signals (PRSs) when devices are in partial coverage or out of network coverage, as they rely on network devices for resource allocation, which may fail due to poor communication conditions or obstacles.
Innovation Solution
Terminal devices implement a sidelink-based positioning solution where a first terminal device allocates sidelink resources to multiple positioning terminal devices, allowing them to transmit reference signals directly, even when out of network coverage, by sending a message indicating sidelink resources and determining specific resources for transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional wireless positioning systems use network devices for resource allocation, then positioning can be achieved in network coverage areas, but positioning fails when devices are in partial coverage or out of network coverage due to poor communication conditions or obstacles
Solution Approach 1:
The patent introduces a sidelink resource allocation mechanism as an intermediary between terminal devices and the network for resource management. When network coverage is unavailable or poor, terminal devices can directly allocate sidelink resources to perform positioning reference signal transmission without relying on network devices, thus maintaining positioning capability in partial or out-of-coverage scenarios
Solution Approach 2:
The patent implements a dynamic resource allocation approach where terminal devices can switch between network-based resource allocation and sidelink-based resource allocation based on coverage conditions. The system dynamically adapts its operation mode depending on whether the terminal is in network coverage, partial coverage, or out of coverage, thereby improving reliability across different deployment scenarios
2Adaptability or versatility
If terminal devices allocate sidelink resources autonomously, then positioning can work in partial or out of network coverage, but resource allocation complexity increases due to direct coordination requirements
Solution Approach 1:
The patent enables terminal devices to perform self-service resource allocation for positioning purposes. Each terminal device independently determines and allocates sidelink resources for transmitting positioning reference signals without requiring network device intervention. This self-service mechanism simplifies the overall system architecture by eliminating the need for complex network-based resource management in coverage-edge scenarios
Solution Approach 2:
The patent segments the resource allocation function into individual terminal device operations rather than centralized network control. Each terminal device independently manages its own resource allocation for positioning, dividing the complex coordination task into simpler, distributed decisions that reduce overall system complexity while maintaining adaptability to various coverage conditions
Data Source
AI summary
Example embodiments of the present disclosure relate to coordinated positioning via sidelink resource. A first terminal device transmits a first message to a plurality of positioning terminal devices including a second terminal device. The first message indicates sidelink resources for transmitting reference signals from the plurality of positioning terminal devices to the first terminal device. Upon receiving the first message, the second terminal device determines a first sidelink resource for transmitting a first reference signal for positioning the first terminal device from the sidelink resources, and then transmits the first reference signal via the first sidelink resource to the first terminal device. Through this solution, a sidelink-based positioning solution can be implemented. In particular, even in the scenario of being partial coverage or being out of coverage, where at least part of the devices involved in the positioning procedure cannot access the network device, the resource allocation for transmitting RSs can be implemented.