Positioning Assistance Message Compression for Wireless Device Location
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently assisting mobile devices with positioning, particularly in reducing complexity and improving performance, due to varying bandwidth and antenna configurations across network cells.
Innovation Solution
A method and apparatus that involve identifying network cells, obtaining information on their bandwidth and antenna configurations, and generating positioning assistance messages to facilitate accurate and efficient positioning, including the use of a location server to coordinate and communicate this information to mobile devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning assistance messages include detailed information about all network cells' bandwidth and antenna configurations, then positioning accuracy is improved, but messaging load and device complexity increase
Solution Approach 1:
The patent extracts only the essential positioning-related information (bandwidth and antenna configuration) from complete network cell data, and transmits only this extracted subset in positioning assistance messages, reducing messaging load while maintaining positioning accuracy
Solution Approach 2:
The positioning assistance information is segmented into distinct components (bandwidth information, antenna configuration information, cell identity) that can be selectively transmitted and processed, allowing the device to handle only relevant segments for positioning
2Reliability
If the system provides comprehensive positioning assistance information for all network cells, then positioning performance is enhanced, but the complexity of positioning implementations in mobile devices increases
Solution Approach 1:
The network side performs preliminary processing by identifying and preparing positioning assistance information for specific network cells before transmission, so that mobile devices receive pre-processed, ready-to-use data without needing to perform complex information gathering and processing themselves
Solution Approach 2:
The patent introduces an intermediary positioning assistance message that translates complex network cell configurations into simplified, device-friendly format, acting as a mediator between the network's detailed configuration data and the device's positioning processing capabilities
3Reliability
If positioning assistance messages contain information about multiple network cells with varying configurations, then positioning robustness is improved, but information processing requirements increase
Solution Approach 1:
The patent applies local quality by providing customized positioning assistance information tailored to each mobile device's specific location and serving cell, rather than universally transmitting information about all network cells, thus reducing processing load while maintaining robustness through selective information provision
Data Source
AI summary
Systems and methodologies are described herein that facilitate reduced complexity network-assisted device positioning in a wireless communication system. As described herein, a mobile device and/or other suitable device can utilize positioning assistance messages received from a location server, a serving network cell, and/or other entities, to assist in position fixing based on reference signals (e.g., positioning reference signals (PRSs)) detected from nearby network cells. Positioning assistance messages as described herein can include, for example, information relating to PRS bandwidths, transmit antenna configurations, and/or other parameters of respective cells from which reference signals are detected by a device during positioning. As further described herein, messaging load can be reduced by providing bandwidth and/or antenna configuration information relative to a given reference cell, such that parameters of non-reference cells that are equivalent to corresponding parameters of the reference cell can be omitted from transmitted positioning assistance data.