Clock Synchronization Server for Base Stations via OLT
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Solution Overview
Problem
In mobile communication systems, especially with small-sized base stations in home or shopping mall environments, implementing time synchronization is challenging and costly due to the limitations of satellite positioning systems, which are difficult to install and network effectively.
Innovation Solution
A communication system that includes a clock synchronization server and an optical line terminal (OLT) connected via fiber, allowing for synchronization data transmission between the server and base stations, enabling time synchronization without the need for satellite positioning systems at each base station, and utilizing existing fibers to share resources and reduce costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clock synchronization apparatus of a satellite positioning system is installed in each base station, then time synchronization is achieved, but the system complexity and networking cost are greatly increased
Solution Approach 1:
Multiple base stations share a common clock synchronization server instead of each base station having its own satellite positioning system. The clock synchronization server is shared by multiple base stations through a network, reducing overall system complexity while maintaining time synchronization reliability.
Solution Approach 2:
The clock synchronization server provides universal time synchronization services to multiple different base stations (including TDD and FDD types) through a single system, replacing the need for dedicated satellite positioning systems at each base station.
2Reliability
If a clock synchronization apparatus of a satellite positioning system is installed in each base station, then time synchronization is achieved, but the networking cost is greatly increased
Solution Approach 1:
Multiple base stations share a common clock synchronization server instead of each base station having its own satellite positioning system. The clock synchronization server is shared by multiple base stations through a network, reducing overall system complexity while maintaining time synchronization reliability.
Solution Approach 2:
Instead of deploying expensive satellite positioning systems at each base station location, the invention uses a centralized clock synchronization server that replicates timing information to multiple base stations through existing network infrastructure, significantly reducing networking costs.
3Adaptability or versatility
If small-sized base stations are deployed in indoor environments, then mobile signal coverage is improved, but time synchronization becomes more difficult to implement
Solution Approach 1:
A clock synchronization server acts as an intermediary between the network and multiple base stations, managing time synchronization centrally. This mediator approach simplifies the synchronization implementation for base stations deployed in various indoor environments where direct satellite positioning system installation is difficult.
Data Source
AI summary
The present disclosure discloses a method and a communication system for time synchronization. The system includes at least one base station, an optical line terminal OLT, and a fiber for transmitting information between the base station and the OLT. The system further includes a clock synchronization server, configured to transmit synchronization data between the clock synchronization server and the at least one base station, so that time synchronization is implemented between the at least one base station and the clock synchronization server. According to the solutions provided by the present disclosure, the system apparatus is simple, and the cost low.