Wireless Positioning Signal Segmentation for Accuracy and Interference
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Solution Overview
Problem
Existing positioning systems face limitations in accuracy, signal interference, and power consumption, necessitating an improved method for high-accuracy position determination.
Innovation Solution
A Wide Area Positioning System (WAPS) using a transmitter array that sends range and hybrid blocks in predefined slots within transmit frames, incorporating pseudo-noise sequences and error control coding, to enhance positioning data transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional positioning systems are used, then positioning function is provided, but location accuracy is limited and signal interference occurs
Solution Approach 1:
The positioning signal is segmented into distinct range blocks and hybrid blocks, each serving specific functions. Range blocks contain dedicated ranging signals for distance measurement, while hybrid blocks contain positioning data and other information. This segmentation allows the receiver to process different types of information separately, improving location accuracy while reducing signal interference through structured signal design.
Solution Approach 2:
The system employs periodic transmission of positioning signals through structured frames containing multiple slots. Each frame includes specific slots for range blocks and hybrid blocks, creating a periodic signal pattern that enables the receiver to synchronize and process signals systematically. This periodic structure improves measurement precision while managing signal interference through predictable timing patterns.
2Reliability
If continuous signaling is used for positioning, then position information is provided, but device power consumption increases
Solution Approach 1:
The positioning system uses periodic signal transmission with structured frames and slots instead of continuous signaling. The receiver can enter low-power states between signal receptions while still maintaining positioning capability. This periodic approach ensures reliable position information is provided at regular intervals while significantly reducing device power consumption compared to continuous operation.
Solution Approach 2:
The system transmits positioning information in structured frames with preliminary synchronization signals and organized data blocks. The receiver can prepare and process information efficiently during active periods, then maintain position knowledge during low-power periods. This preliminary organization of information allows the device to reduce power consumption while maintaining reliable positioning functionality.
3Measurement precision
If positioning signals are transmitted frequently, then location accuracy is improved, but radio channel interference increases
Solution Approach 1:
The signaling is segmented into specific slots within frames, with dedicated range blocks for positioning and hybrid blocks for additional information. This segmentation allows efficient use of radio resources by transmitting positioning signals only in designated time slots rather than continuously, improving location accuracy while reducing radio channel interference through structured, non-overlapping transmissions.
Solution Approach 2:
Positioning signals are transmitted periodically in structured frames with specific slots allocated for range blocks. This periodic transmission pattern provides sufficient updates for accurate positioning while creating predictable interference patterns that can be managed through synchronization and timing, reducing overall radio channel interference compared to frequent or continuous transmissions.
4Measurement precision
If detailed positioning data is transmitted in each signal, then high accuracy position determination is achieved, but data transmission complexity increases
Solution Approach 1:
Positioning data is segmented into dedicated range blocks containing ranging signals for distance measurement and hybrid blocks containing positioning data and other information. This segmentation allows the receiver to process different types of data separately using optimized algorithms for each block type, achieving high position determination accuracy while reducing overall data transmission complexity through structured organization.
Solution Approach 2:
The system transmits positioning data periodically in structured frames with specific slots for different data types. This periodic structure allows the receiver to expect and process information in predictable patterns, reducing the complexity of data transmission while maintaining high accuracy position determination through regular updates organized in manageable frame structures.
Data Source
AI summary
Devices, systems, and methods for sending positional information from transmitters/beacons. In one implementation a transmitter generates a range block including a ranging signal and a hybrid block including positioning data, and sends the range block and hybrid block at different times. A user device may receive signals from a plurality of transmitters and generates position/location information using trilateration and measured altitude information in comparison with transmitter altitude information.