CCDU Clock Synchronizer with GPS, Boundary Clock, and Holdover
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Solution Overview
Problem
Existing 5G telecommunications systems face synchronization issues due to the physical separation of CU and DU units, leading to complexity and potential reliability problems.
Innovation Solution
A combined centralized and distributed unit (CCDU) system with an integrated clock synchronizer module, incorporating a Boundary clock, precision timing protocol engines, and GPS for synchronization, along with a holdover mechanism to ensure continuous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the CU and DU units are physically separate, then the system can implement complex protocol splitting and functional separation, but synchronization issues arise between the separated units
Solution Approach 1:
The patent combines CU and DU into a single integrated CCDU unit with unified housing and shared synchronization resources. The Boundary Clock module provides centralized time reference for all components, eliminating synchronization issues between physically separate units while maintaining functional separation through software/module architecture.
2Adaptability or versatility
If the CU and DU units are physically separate, then functional modularity is achieved, but the system requires exhaustive and complex methodologies and protocol support
Solution Approach 1:
The patent merges CU and DU into a single integrated unit that shares common synchronization infrastructure, power supply, and housing. This reduces the complexity of inter-unit protocols and communication interfaces while maintaining functional modularity through internal module separation.
3Adaptability or versatility
If multiple separate units are used, then functional specialization is achieved, but system cost increases
Solution Approach 1:
The patent integrates CU and DU into a single manufactured unit with shared components including housing, power supply, cooling system, and synchronization module. This reduces manufacturing costs by eliminating duplicate components and simplifying assembly processes while maintaining functional specialization through software/module architecture.
4Adaptability or versatility
If multiple separate units are used, then functional distribution is achieved, but system reliability decreases
Solution Approach 1:
The patent combines multiple functional units into a single integrated system with shared critical components such as power supply, cooling, and synchronization. This eliminates failure points associated with inter-unit connections and environmental variations, thereby improving overall system reliability while maintaining functional distribution through internal module architecture.
Data Source
AI summary
Disclosed are methods and systems for a synchronizer system including a global positioning system (GPS) and a boundary clock. The method includes: generating, by the GPS of the synchronizer system, a first clock signal having a first predefined frequency; locking the first clock signal generated by the GPS at the first predefined frequency; and generating, by the boundary clock of the synchronizer system, a second clock signal having a second predefined frequency, to provide the second clock signal to a combined centralized and distributed unit (CCDU) system.