Relative Location Data Format for Wireless Bandwidth Reduction
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Solution Overview
Problem
The increasing demand for location-based services in wireless communication systems strains the capacity of the radio access portion, as mobile devices communicate a large amount of GPS location information over the air, degrading the performance of wireless communication services.
Innovation Solution
Mobile devices communicate their location information relative to a base station's position, using a base station-assisted format that reduces data transmission requirements, allowing more frequent updates without significantly degrading service performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If mobile devices communicate GPS location information in conventional format, then location information is accurately provided, but bandwidth consumption increases and service performance degrades
Solution Approach 1:
The patent changes the format parameters of location information from conventional GPS coordinates (latitude/longitude) to relative position data (distance and direction from base station). This parameter transformation reduces the number of bits required to represent location data while maintaining sufficient accuracy for location-based services, directly resolving the contradiction between accuracy and bandwidth consumption
Solution Approach 2:
Instead of providing absolute GPS coordinates from the mobile device, the system inverts the approach by having the base station provide reference information and the mobile device report relative position. This inversion reduces the data transmission burden on the mobile device while maintaining location accuracy through the base station's computational capabilities
2Productivity
If mobile devices transmit GPS location information frequently, then location-based services are enhanced, but radio access capacity is strained and service performance degrades
Solution Approach 1:
By changing the data format from full GPS coordinates to compressed relative position parameters (distance and direction), the patent enables more frequent location updates within the same radio access capacity. The reduced data size per update allows higher update frequencies without straining the network
Solution Approach 2:
The patent uses partial information (relative position instead of full coordinates) that is sufficient for most location-based services. This partial action approach provides adequate location functionality while consuming less bandwidth, enabling more frequent updates without excessive capacity consumption
Data Source
AI summary
In providing a wireless location communication service including a location based service to a user of a mobile device, the mobile device sends information concerning a location of the device relative to a given position in a wireless communication system. The given position may be that of a base station in the system. First information concerning a location of the base station (e.g, GPS information) is communicated to the mobile device, e.g., via broadcast. The mobile device determines second information concerning its location, e.g., based on signals from GPS satellites received thereby. The mobile device then generates relative location information based at least on the first and second information.