Sidelink UE Positioning Coordination Through GMLC Requests
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Solution Overview
Problem
Existing wireless communication systems lack efficient methods for determining distance and direction between User Equipments (UEs) and relative positioning using the PC5 interface, particularly in sidelink positioning scenarios.
Innovation Solution
An information processing method and apparatus that involves sending request messages with UE identifiers and ranging/sidelink positioning requirements through a Gateway Mobile Location Center (GMLC), allowing network elements to facilitate ranging and positioning services using the PC5 interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sidelink positioning is implemented using PC5 interface between UEs, then positioning capability and autonomy are improved, but system complexity and lack of network coordination increase
Solution Approach 1:
The patent introduces network functions (LMF, AMF, GMLC) as intermediaries to coordinate sidelink positioning operations. The LMF generates positioning assistance data and manages the positioning session, while the AMF routes messages between UEs and positioning servers. This mediator approach enables complex positioning functionality while shielding UEs from system complexity through standardized interfaces and automated network control.
2Measurement precision
If multiple network functions are involved in sidelink positioning, then positioning accuracy and reliability are improved, but message processing complexity and time consumption increase
Solution Approach 1:
The patent implements preliminary action by having the LMF generate positioning assistance data and configure measurement parameters before actual positioning measurements occur. The network functions pre-establish positioning sessions, pre-process assistance data, and pre-coordinate between UEs, thereby reducing real-time processing delays and enabling faster positioning execution while maintaining high accuracy through thorough preliminary setup.
3Reliability
If network-based coordination is added to sidelink positioning, then positioning reliability is improved, but device autonomy and simplicity are reduced
Solution Approach 1:
The patent implements a dynamic positioning architecture where UEs can operate in different modes: autonomous sidelink positioning for high autonomy scenarios, and network-coordinated positioning for enhanced reliability scenarios. The system dynamically selects the appropriate mode based on service requirements, UE capabilities, and network availability, allowing flexibility between autonomy and reliability without being constrained to a single operational mode.
Data Source
AI summary
Embodiments of the present disclosure provide an information processing method and apparatus, a communication device, and a storage medium. The information processing method executed by an application function (AF) may include: sending a first request message to a gateway mobile location center (GMLC), wherein the first request message comprises: identifiers of a plurality of user equipments (UEs), and requirement information of ranging and/or sidelink positioning; where the identifiers of the plurality of UEs indicate UEs that perform ranging and/or mutual positioning based on sidelink.