Wireless Device Multilateration Positioning via Timing Advance
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Solution Overview
Problem
Existing methods for positioning in wireless communication networks, particularly in GSM or EC-GSM-IoT networks, face inefficiencies due to suboptimal location procedures and resource wastage when non-serving nodes are involved in timing advance multilateration, leading to inaccurate location determination and excessive energy consumption.
Innovation Solution
A method where a wireless device sends a positioning access request to a second network node to estimate Timing Advance (TA) values, along with device and source identifiers, enabling the second network node to provide TA values associated with cell identifiers to a first network node or positioning node, allowing for enhanced accuracy and efficient resource utilization by maximizing the use of non-serving controller nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing positioning methods are used involving non-serving nodes, then positioning coverage is extended, but measurement precision and energy efficiency deteriorate
Solution Approach 1:
The patent introduces an intermediary identification mechanism where the wireless device sends its identity and source cell information to the non-serving node. This intermediary information exchange enables the non-serving node to act as an effective mediator in the positioning process, allowing accurate TA measurement without requiring the device to expend excessive energy on repeated signaling or complex procedures.
Solution Approach 2:
The patent implements preliminary action by having the wireless device transmit its identity and serving cell information to the non-serving node before the actual positioning measurement takes place. This preliminary information exchange prepares the system in advance, enabling the non-serving node to efficiently perform TA measurements without requiring subsequent complex signaling or energy-intensive procedures.
2Adaptability or versatility
If non-serving nodes are involved in timing advance multilateration, then positioning capability is enhanced, but resource utilization becomes suboptimal
Solution Approach 1:
The patent uses the non-serving node as an intermediary that receives identification information from the wireless device and uses it to efficiently perform positioning measurements. This intermediary role allows the non-serving node to participate in positioning while maintaining optimal resource utilization, as it can leverage existing signaling structures rather than creating new resource-intensive procedures.
Solution Approach 2:
The patent enables non-serving nodes to perform multiple functions: they serve as both regular network nodes for normal communication and as positioning measurement nodes when needed. The identification information mechanism allows the same node structure to handle both communication and positioning tasks, improving overall system productivity while enhancing positioning capability.
3Measurement precision
If conventional positioning procedures are followed, then protocol compatibility is maintained, but location determination accuracy deteriorates
Solution Approach 1:
The patent applies preliminary action by having the wireless device send its identity and source cell information to the non-serving node before the positioning measurement. This advance preparation simplifies the overall procedure by establishing necessary context upfront, allowing accurate location determination without requiring complex real-time coordination or multiple signaling rounds that would increase procedural complexity.
Data Source
AI summary
Method by a wireless device (120) for supporting positioning of the wireless device (120) in a wireless communication network (100). The wireless device (120) receives (501, 801) from a first network node (110), a positioning request. The wireless device (120) is served in by the first network node (110) when receiving the positioning request. The positioning request requests the wireless device (120) to initiate a multilateration. In response, the wireless device (120) sends (504, 804a) to a second network node (113) comprised in the wireless communication network (100), a positioning access request indicating that the access request relates to a multilateration positioning and requesting the second network node (113) to estimate a Timing Advance (TA) for the wireless device (120). The wireless device (120) sends (505, 804a, 804c), to the second network node (113), an obtained device identifier identifying the wireless device (120), and an obtained source identifier identifying the first network node (110).