PRS Resource Sequence Identifier Compression
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Solution Overview
Problem
Current wireless communication networks face inefficiencies in position determination of User Equipment (UE) due to the large signaling overhead required to uniquely identify multiple reference signals, which are part of a complex hierarchical structure.
Innovation Solution
The method involves generating and using unique sequence identifiers for each Position Reference Signal (PRS) resource within a positioning session, based on their priority, to efficiently report measurement data from User Equipment (UE) to a location server, reducing the need for extensive identifying information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If full hierarchical identifying information is used for each PRS resource, then unique identification is ensured, but signaling overhead increases
Solution Approach 1:
The identifying information is segmented into two parts: a short sequence identifier (1-16 bits) that is unique within the positioning session, and the full hierarchical information (TRP ID, resource set ID, resource ID) that is provided once in assistance data. This segmentation allows the UE to report measurements using only the compact sequence identifier while the network maintains the ability to map it to full identification information.
Solution Approach 2:
The network performs preliminary action by providing the full hierarchical identifying information to the UE in the assistance data before the measurement reporting phase. This allows the UE to generate sequence identifiers based on this pre-provided information without needing to transmit the full hierarchical structure in each measurement report.
2Reliability
If hierarchical structure with multiple levels is used for PRS resources, then comprehensive identification is achieved, but system complexity increases
Solution Approach 1:
The invention extracts the essential identifying function from the complex hierarchical structure by creating sequence identifiers that capture the unique identification requirement without requiring the full hierarchical context in measurement reports. The hierarchical structure remains in the assistance data and network side, while only the extracted sequence identifier is transmitted in reports.
Solution Approach 2:
Instead of having the UE transmit full hierarchical identification information up the chain, the invention inverts the approach by having the network provide the hierarchical information down to the UE in assistance data, and the UE simply report compact sequence identifiers back to the network.
3Reliability
If extensive identifying information is transmitted in each measurement report, then accurate resource identification is ensured, but reporting efficiency decreases
Solution Approach 1:
The invention creates a simplified copy (sequence identifier) of the full hierarchical identifying information that preserves the unique identification capability while occupying minimal space. This copy is generated by the UE based on the assistance data received and is sufficient for the network to identify the measured PRS resource without transmitting the full hierarchical structure.
Data Source
AI summary
Information inherently conveyed in the hierarchical structure of a positioning frequency layer is leveraged to determine a sequence identifier unique to each Positioning Reference Signal (PRS) resource of a sequence of PRS resources used in a positioning session of a user equipment (UE). This unique sequence number can then be used in the reporting of measurement data by the UE or other reporting device to a location server. As such, embodiments herein effectively provide means for compressing identification information included in position measurement reporting to the location server.