Relay UE Paging Transfer for Low-Latency SL Positioning
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Solution Overview
Problem
Existing positioning techniques in 5G wireless networks face inefficiencies in determining the location of mobile devices, particularly when remote UEs are not actively connected to the network, requiring separate discovery processes that introduce latency in sidelink positioning sessions.
Innovation Solution
A method utilizing relay UEs to obtain and relay positioning capability information of remote UEs during paging occasions, enabling efficient sidelink positioning sessions by leveraging the paging mechanism to share configuration information without a separate discovery process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a separate discovery process is used to obtain positioning capability information from remote UEs, then positioning configuration can be obtained, but positioning latency increases due to the additional discovery step
Solution Approach 1:
The patent combines the discovery process and positioning configuration delivery into a single integrated process by transmitting positioning capability information and configuration within the existing paging message structure. This merging eliminates the need for separate discovery procedures, directly reducing positioning latency while maintaining necessary information exchange.
Solution Approach 2:
The paging message is enhanced to serve multiple functions: it continues to perform its traditional role of notifying remote UEs of network events while simultaneously carrying positioning capability information and configuration data. This multi-functionality approach allows the same communication mechanism to handle both paging and positioning setup, reducing overall process complexity.
2Productivity
If relay UEs are used to transmit positioning information during paging occasions, then positioning efficiency improves for remote UEs, but the complexity of information management increases
Solution Approach 1:
Relay UEs act as intermediaries between the network and remote UEs for positioning information exchange. The relay UE receives positioning configuration from the network and forwards it to remote UEs during paging occasions, enabling efficient positioning setup without requiring direct network-remote UE communication channels. This intermediary approach streamlines the process while managing information flow complexity through structured message handling.
3Measurement precision
If positioning capability information is obtained from multiple remote UEs, then positioning accuracy improves, but the time required to collect and process information increases
Solution Approach 1:
The patent utilizes periodic paging occasions to collect positioning capability information from multiple remote UEs. By leveraging the existing periodic paging structure, the system can gather information from multiple UEs over successive paging cycles rather than requiring simultaneous information collection, thereby maintaining positioning accuracy while distributing the time required for information gathering across multiple periodic intervals.
Data Source
AI summary
In some implementations, a relay user equipment (UE) may obtain positioning capability information from one or more remote UEs, wherein, for each remote UE of the one or more remote UEs, the positioning capability information is indicative of at least one capability of the respective remote UE for performing sidelink (SL) positioning. The relay UE may obtain positioning configuration information for conducting the SL positioning session. The relay UE may send, to the one or more remote UEs, the positioning configuration information, wherein the relay UE sends the positioning configuration information during one or more paging occasions (POs) of the one or more remote UEs.