UE Relay Positioning via Anchor Links for Lower Network Complexity
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Solution Overview
Problem
There is a need for improved positioning methods in wireless communication systems, particularly in next-generation radio access technologies like New Radio (NR), to efficiently handle increased communication capacity and services sensitive to reliability and latency, especially in vehicle-to-everything (V2X) communications.
Innovation Solution
A method and apparatus for a target user equipment (UE) to establish connections with a location server and anchor UE to transmit and receive location information, enabling efficient wireless signal transmission and reception, including the use of a location management function (LMF) or server UE for location calculation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a location server directly communicates with anchor UEs for positioning, then positioning accuracy is improved, but device complexity and network overhead increase
Solution Approach 1:
The target UE acts as an intermediary by receiving location information requests from the location server and forwarding them to anchor UEs. The target UE also collects location information responses from anchor UEs and relays them back to the location server, eliminating the need for direct location server-anchor UE connections and reducing network complexity while maintaining positioning accuracy
2Reliability
If multiple connections are established for location information exchange, then positioning reliability is improved, but device complexity increases
Solution Approach 1:
The target UE performs multiple functions using a single connection framework: it acts as a client to the location server, a relay to anchor UEs, and a collector of location information. This multi-functionality approach maintains positioning reliability through multiple communication paths while avoiding the complexity of establishing separate dedicated connections for each function
3Adaptability or versatility
If location information is transmitted through intermediate UEs, then network coverage is improved, but transmission time increases
Solution Approach 1:
The target UE pre-establishes connections with anchor UEs and prepares to receive location information requests. When a positioning request arrives, the target UE can immediately forward it to anchor UEs and collect responses without delays associated with connection establishment, reducing transmission time while maintaining extended network coverage through the relay mechanism
Data Source
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AI summary
The present disclosure relates to a method by which a target user equipment (UE) performs positioning in a wireless communication system. Specifically, the method comprises the steps of: establishing a first connection to a location server; establishing a second connection to at least one anchor UE; transmitting a location information request message to the at least one anchor UE on the second connection on the basis of having received the location information request message from the location server on the first connection; and transmitting, to the location server on the first connection, a first location information providing message and a second location information providing message that is related to the target UE, on the basis of having received the first location information providing message from the at least one anchor UE on the second connection.