Terminal Assisted Location Success Rate via Multi-Source Signal Integration
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Solution Overview
Problem
Existing positioning methods, such as assisted GPS, face challenges in obtaining an accurate assisted location, particularly in scenarios where the terminal moves between different cell coverage areas, leading to a low success rate of providing an assisted location.
Innovation Solution
A method that determines identifiers of multiple target signal sources with detectable signal strengths greater than a preset threshold, generates a signal source integrated identifier, and uses this identifier to obtain a location for satellite positioning, thereby improving the success rate of obtaining an assisted location by considering multiple signal sources rather than just the currently registered cell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal uses only the currently registered cell identifier to obtain assisted location, then the positioning method is simple, but the success rate of obtaining assisted location is low when moving between cell coverage areas
Solution Approach 1:
The patent merges multiple signal source identifiers (current cell, neighboring cells, Wi-Fi access points, Bluetooth devices) into a unified signal source identification system. By combining these diverse identifiers into a comprehensive set, the system maintains reliable assisted location acquisition across cell boundaries while managing complexity through structured organization of multiple signal sources.
Solution Approach 2:
The patent implements a universal signal source identification mechanism that works across different types of signal sources (cellular networks, Wi-Fi, Bluetooth). This multi-functional approach allows the terminal to obtain assisted location regardless of which signal source is available, enhancing reliability while using a single unified method for diverse signal types.
2Reliability
If the terminal considers multiple signal sources for positioning, then the success rate of obtaining assisted location improves, but the Time to First Fix increases due to processing more data
Solution Approach 1:
The patent performs preliminary actions by pre-acquiring and caching assisted location information from multiple signal sources before GPS positioning is actually needed. The terminal collects cell identifiers, Wi-Fi access point information, and Bluetooth device data in advance, storing them for rapid retrieval. This preliminary data gathering reduces the Time to First Fix during actual positioning while maintaining high success rates through the pre-established multi-signal source framework.
3Reliability
If the terminal uses multiple signal sources for positioning, then positioning reliability improves in occluded areas, but the device complexity and energy consumption increase
Solution Approach 1:
The patent applies partial action by selectively activating different signal source detection methods based on environmental conditions and availability. In occluded areas where GPS is blocked, the system activates alternative signal sources (Wi-Fi, Bluetooth, cell towers) only when needed, rather than continuously monitoring all possible signal sources. This approach maintains positioning reliability in difficult environments while minimizing unnecessary energy consumption from constant multi-signal monitoring.
Data Source
AI summary
This application discloses a positioning method and an apparatus, and relates to the field of communications technologies. The positioning method and the apparatus are invented to resolve a prior-art problem of a relatively low success rate of obtaining an assisted location. The method includes: determining, by a terminal, identifiers of M target signal sources, where a value of M is an integer greater than 1, and the target signal source is a signal source whose signal strength currently can be detected by the terminal and is greater than a preset threshold; obtaining, based on the identifiers of the M target signal sources, a location matching the identifiers of the M target signal sources; and performing, by the terminal, satellite positioning based on the location. This application is applied to a satellite positioning process.