Anchor Node Location Dissemination via Offset Signaling
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently positioning target mobile devices in dense anchor deployments, particularly in reducing signaling overhead and latency while maintaining accurate location determination.
Innovation Solution
The proposed solution involves an apparatus and method that transmit messages indicating location offsets relative to a reference location of an anchor wireless-signal transmitter, allowing a target mobile device to determine its position using a subset of anchor nodes and reducing the need for full location broadcasts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If full location information of all anchor nodes is transmitted to the target mobile device, then positioning accuracy is maintained, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential location information (offsets relative to reference anchors) rather than transmitting complete location data for all anchor nodes. This selective extraction reduces the volume of signaling data while preserving the capability to calculate accurate positions through offset computations.
Solution Approach 2:
The system pre-establishes a reference framework of anchor nodes with known locations before positioning operations. This preliminary setup allows subsequent positioning to use only offset information relative to these pre-defined references, reducing real-time signaling requirements while maintaining positioning accuracy.
2Loss of information
If location information for all anchor nodes is broadcast, then complete positioning data is available, but latency increases
Solution Approach 1:
The patent extracts only the necessary offset information from complete anchor location data, transmitting minimal essential data required for positioning calculations. This extraction approach reduces transmission time and latency while ensuring the target device receives sufficient information to determine its position.
Solution Approach 2:
The system transmits partial location information (offsets relative to reference anchors) rather than complete location data for all anchors. This partial action approach reduces signaling latency while providing adequate information for accurate positioning through computational derivation of full location data.
3Measurement precision
If dense anchor deployments are used to improve positioning accuracy, then measurement precision increases, but device complexity increases
Solution Approach 1:
The system pre-configures reference anchor nodes with known locations before positioning operations begin. This preliminary establishment of reference points simplifies the positioning process by providing a stable computational framework, reducing the complexity of real-time calculations even in dense anchor deployments.
Solution Approach 2:
The patent introduces reference anchor nodes as intermediaries between the dense anchor deployment and the target mobile device. These reference anchors serve as computational mediators, simplifying the positioning calculations by providing fixed reference points against which offset measurements can be computed, thereby reducing overall system complexity.
Data Source
AI summary
A method, for use in positioning a target mobile device, includes: transmitting, to the target mobile device from an apparatus, a message indicating a location offset relative to a reference location of a first anchor wireless-signal transmitter that corresponds to a first wireless-signal transmission, the location offset corresponding to a particular second anchor wireless-signal transmitter of a plurality of second anchor wireless-signal transmitters that correspond to a plurality of second wireless-signal transmissions.