Sidelink Positioning Integrity Configuration for Safety Applications
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Solution Overview
Problem
Current wireless communication systems lack functionality to support sidelink positioning integrity, particularly in scenarios involving different UE roles and modes of integrity operation, which is critical for ensuring the reliability and accuracy of positioning estimates in safety-critical use cases.
Innovation Solution
The proposed solution involves a method where a UE transmits a configuration request message to a communication device to request sidelink positioning integrity information, which includes integrity service parameters. The UE then receives a response message with the requested information and determines the sidelink positioning integrity of a computed location estimate based on this information, utilizing both sidelink RAT-dependent and RAT-independent positioning methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current device positioning techniques are used, then positioning functionality is provided, but positioning accuracy and reliability are insufficient for safety-critical applications
Solution Approach 1:
The patent segments the positioning integrity functionality into distinct components: integrity monitoring entities that separately monitor different positioning sources (GNSS, sidelink, cellular), integrity calculation entities that compute integrity metrics for each source, and integrity determination entities that aggregate results. This segmentation enables comprehensive reliability assessment without compromising positioning accuracy by treating integrity monitoring as a separate but parallel function.
Solution Approach 2:
The patent introduces intermediary integrity monitoring entities and integrity calculation entities that act as mediators between the positioning system and the application layer. These intermediaries process positioning data from multiple sources, calculate integrity metrics, and provide certified positioning results, thereby enhancing both reliability and accuracy without requiring changes to the underlying positioning technologies.
2Adaptability or versatility
If sidelink positioning is implemented, then positioning functionality is extended to direct UE communication, but integrity monitoring capability is lacking
Solution Approach 1:
The patent implements a universal integrity monitoring framework that handles multiple positioning methods (GNSS, sidelink, cellular) through a common architecture. The integrity monitoring entities and calculation entities are designed to be method-agnostic, providing the same reliability guarantees across different positioning technologies including the newly added sidelink positioning, thereby enabling versatile positioning support with consistent integrity monitoring.
Solution Approach 2:
The patent establishes preliminary integrity monitoring and calculation mechanisms that are set up before sidelink positioning operations begin. Configuration messages pre-define integrity parameters, monitoring entities are established in advance, and integrity calculation methods are predetermined, ensuring that reliability protection is in place before positioning data is collected or processed.
3Reliability
If positioning integrity information is requested and processed, then positioning reliability is enhanced, but communication overhead and processing complexity increase
Solution Approach 1:
The patent implements self-service mechanisms where UEs autonomously perform integrity calculations for their own positioning estimates using locally available measurement data and configuration parameters. The UE-based integrity determination allows devices to self-certify their positioning results without requiring constant network intervention, thereby enhancing reliability while reducing overall system processing complexity.
Solution Approach 2:
The patent applies partial action by implementing integrity monitoring at selective levels - full network-based integrity determination for critical applications, partial UE-based determination for less critical uses, and optional integrity reporting. This selective approach provides sufficient reliability enhancement for safety-critical applications while avoiding excessive processing complexity for all positioning operations.
Data Source
AI summary
Various aspects of the present disclosure relate to sidelink positioning integrity. An apparatus, such as a UE, transmits, to a communication device, a configuration request message to request sidelink positioning integrity information, and the configuration request message includes at least integrity service parameters. The UE receives, from the communication device, a response message that includes the requested sidelink positioning integrity information. The UE determines sidelink positioning integrity of a computed location estimate based at least in part on the received sidelink positioning integrity information.