Wireless Base Station Timing Synchronization via Inter-Station Relay
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Solution Overview
Problem
Conventional RF technologies rely on GPS signals for synchronization, which can be unreliable in environments like high-rise buildings or areas with obstructions, leading to synchronization issues for wireless base stations.
Innovation Solution
Implementing a network environment where timing information is modulated onto different carrier frequencies and wirelessly transmitted between wireless base stations, allowing synchronization even when direct GPS signal reception is unavailable, using a first wireless base station to forward synchronization information to other stations that cannot receive GPS signals directly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS signals are used for synchronization, then synchronization accuracy is improved, but reliability deteriorates in obstructed environments
Solution Approach 1:
The patent introduces a base station as an intermediary to relay timing information from GPS satellites to wireless devices. Instead of devices directly receiving GPS signals, the base station receives the signal and forwards timing information to devices, solving the problem of signal obstruction in high-rise building environments while maintaining synchronization accuracy.
2Measurement precision
If direct GPS reception is required, then synchronization precision is improved, but adaptability deteriorates to environmental conditions
Solution Approach 1:
The patent segments the synchronization function into two parts: GPS signal reception at the base station and timing information distribution to devices. This allows the system to maintain high synchronization precision through direct GPS reception at the base station while adapting to various environmental conditions by serving obstructed areas through wireless timing information broadcast.
3Measurement precision
If GPS signal dependency is maintained, then synchronization accuracy is improved, but device complexity increases for signal processing
Solution Approach 1:
The patent extracts the GPS signal reception and processing function from individual wireless devices and centralizes it at the base station. Devices only need to receive and process simple timing information broadcasts from the base station, dramatically reducing device complexity while maintaining clock synchronization accuracy through the base station's GPS processing capabilities.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures synchronized wireless communications for mobile devices by enabling synchronization of wireless base stations through alternative timing information transmission, maintaining network access even in areas with obstructed GPS signals.
Implementation Method 1
receives a first signal including timing information modulated onto a first carrier frequency
Implementation Method 2
wirelessly transmits the second signal from the first wireless base station to a second wireless base station
Data Source
AI summary
A network environment includes multiple wireless base stations providing wireless access to multiple mobile communication devices. A first wireless base station receives a first signal such as from satellite or other suitable entity. The first signal includes timing information modulated onto a first carrier frequency. The first wireless base station produces a second signal in which the timing information is modulated onto a second carrier frequency. The first wireless base station wirelessly transmits the second signal from the first wireless base station to a second wireless base station in the network environment. The timing information is used by both the first wireless base station and the second wireless base station to synchronization their respective clocks and corresponding wireless communications providing the wireless access to the multiple mobile communication devices.