Base Station Phase Synchronization Without GPS Antennas
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Solution Overview
Problem
The high costs associated with using a Global Positioning System (GPS) for phase synchronization in single-frequency network systems, which is necessary for improving signal quality and throughput by synchronizing phases of base stations.
Innovation Solution
A method and system that determine a path from a non-reference base station to a reference base station, calculate and adjust phase differences between adjacent base stations, allowing for phase synchronization without the need for a GPS antenna, by using measurement reference signals and physical cell identifiers to synchronize phases within the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS is used for phase synchronization between base stations, then phase synchronization accuracy is improved, but system cost increases due to GPS antenna installation requirements
Solution Approach 1:
The patent introduces a central controller as an intermediary device that coordinates phase synchronization across multiple base stations. The central controller collects phase information from each base station, calculates the cumulative phase difference along the transmission path, and generates compensation values to adjust phases. This mediator approach eliminates the need for GPS antennas at each base station while achieving synchronized phases through centralized coordination.
Solution Approach 2:
The patent implements a feedback mechanism where each base station reports its phase information to the central controller, which then calculates the cumulative phase difference and sends adjustment commands back to the base stations. This closed-loop feedback system continuously monitors and corrects phase deviations, enabling accurate phase synchronization without relying on GPS infrastructure.
2Stability of the object's composition
If GPS antennas are installed at each base station for phase synchronization, then signal phase consistency is improved, but installation and maintenance complexity increases
Solution Approach 1:
The patent merges the phase synchronization function from individual base station GPS receivers into a centralized controller. Instead of each base station independently using GPS, the system combines phase measurement capabilities at the central controller, which then coordinates synchronization across all base stations. This consolidation reduces installation complexity by eliminating multiple GPS antenna requirements while maintaining phase consistency through centralized management.
3Productivity
If phase synchronization is achieved through GPS, then network coordination is improved, but system reliability decreases due to GPS dependency
Solution Approach 1:
The patent enables the base station network to self-synchronize phases through mutual phase measurements and centralized coordination, eliminating dependency on external GPS infrastructure. Each base station contributes its phase information to the central controller, which calculates and distributes compensation values. This self-service approach improves reliability by making the system independent of GPS while maintaining effective network coordination.
Data Source
AI summary
Embodiments of the present invention relate to a method and a system for controlling phase synchronization, and an apparatus. The method includes: determining a path from a non-reference base station to a preset reference base station, obtaining a first phase difference between every two adjacent base stations on the path, obtaining a second phase difference between the reference base station and the non-reference base station according to the first phase difference, and adjusting a non-reference phase of the non-reference base station to a reference phase of the reference base station according to the second phase difference. According to the method and system for controlling phase synchronization, and the apparatus that are provided in the embodiments of the present invention, in a single-frequency network system, phases of base stations are synchronized without a need to install a GPS antenna, so that system costs are reduced.