Proximity Service Location Accuracy via LTE and Wi-Fi Fusion
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Solution Overview
Problem
Long-Term Evolution (LTE) DIRECT technology has limitations in location accuracy for proximity services, with a typical proximity range of approximately 500 meters, which restricts its use in applications requiring higher granularity, such as social networking and advertising.
Innovation Solution
An expression application server enhances location accuracy by requesting additional location information from a location platform when increased granularity is desired, allowing for proximity levels down to less than 1 meter, and incorporates this information into expression matches, enabling more precise proximity services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If LTE DIRECT technology is used for proximal discovery, then battery life is improved and RF coverage is increased, but location accuracy deteriorates to approximately 500 meters
Solution Approach 1:
The patent combines LTE DIRECT technology with Wi-Fi positioning technology to achieve both long battery life and high location accuracy. The system uses LTE DIRECT for proximal discovery and then integrates Wi-Fi macro location data to enhance the granularity of location information, resolving the contradiction between battery efficiency and measurement precision.
Solution Approach 2:
The patent creates a composite positioning system that integrates multiple positioning technologies (LTE DIRECT and Wi-Fi) into a unified framework. This composite approach allows the system to leverage the strengths of each technology—LTE DIRECT for battery efficiency and Wi-Fi for location accuracy—thereby resolving the technical contradiction.
2Adaptability or versatility
If LTE DIRECT technology is used for proximal discovery, then user scalability is improved and LTE worldwide adoption is leveraged, but location granularity deteriorates to approximately 500 meters
Solution Approach 1:
The patent introduces Wi-Fi macro location data as an intermediary element that bridges the gap between LTE DIRECT's coarse 500-meter proximity detection and the need for fine-grained location accuracy. This intermediary layer of positioning information enables the system to maintain user scalability while achieving enhanced location granularity.
3Device complexity
If LTE DIRECT technology is used for proximal discovery, then simplified hardware requirements are achieved, but location accuracy deteriorates compared to dedicated proximity technologies
Solution Approach 1:
The patent makes the LTE DIRECT system multi-functional by enabling it to perform both proximal discovery and enhanced location positioning. By integrating Wi-Fi macro location capabilities into the LTE DIRECT framework, the system achieves high location accuracy without requiring dedicated proximity hardware, thereby resolving the contradiction between device simplicity and measurement precision.
Data Source
AI summary
Concepts and technologies are described herein for improving location accuracy for proximity services. According to one aspect of the concepts and technologies disclosed herein, an expression application server can receive an expression message generated by a Third Generation Partnership Project (“3GPP”) proximity service (“ProSe”)-enabled application executing on a mobile device. The expression message includes an expression code and a location tag. The expression application server can analyze the expression message to determine whether increased granularity is desired for use in determining an expression match to the expression code. In response to determining that the increased granularity is desired, the expression application server can request additional location information from a location platform. The expression application server can receive the additional location information from the location platform. The expression application server also can enhance the expression match with the additional location information to provide the increased granularity to the mobile device.