Distributed Antenna Synchronization for Multi-TDD Integration
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Solution Overview
Problem
Current commercially deployed multi-network integration systems primarily support single 4G TDD or 5G TDD networks, failing to meet the requirements for multi-TDD network integration due to synchronization challenges and interference between different TDD networks.
Innovation Solution
A distributed antenna system with a synchronization module that enables simultaneous processing of multiple TDD signals, allowing coexistence and co-location of 4G and 5G TDD networks, and supports high-bandwidth remote applications through analog optical fiber connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single 4G TDD or 5G TDD network is supported in the multi-network integration system, then the synchronization requirements for TDD network standard can be met, but the coverage requirement for multi-TDD network integration cannot be satisfied
Solution Approach 1:
The access unit is segmented into multiple frequency sub-boards, with each sub-board independently receiving and processing TDD signals from different network standards (4G, 5G). Each sub-board includes its own synchronization module and signal processing module, enabling independent synchronization while maintaining overall system coordination. This segmentation allows the system to support multiple TDD networks simultaneously without compromising synchronization requirements.
2Adaptability or versatility
If multiple TDD networks are integrated in the distributed antenna system, then the coverage requirement for multi-network integration is satisfied, but synchronization challenges and interference between different TDD networks occur
Solution Approach 1:
A central controller acts as an intermediary to coordinate multiple access units and frequency sub-boards. The controller receives synchronization information from various TDD networks, processes it centrally, and distributes appropriate synchronization signals to each frequency sub-board. This intermediary approach enables harmonious coexistence of multiple TDD networks by managing potential interference and ensuring proper synchronization across the entire system.
Solution Approach 2:
Each frequency sub-board is configured with specific local qualities tailored to its assigned network standard, including dedicated synchronization modules and signal processing parameters optimized for 4G or 5G TDD requirements. This local optimization allows each sub-board to handle its specific network type effectively while the overall system maintains multi-network integration capability.
3Adaptability or versatility
If a commercially deployed multi-network integration system is used, then single 4G TDD or 5G TDD network support is achieved, but the system complexity increases due to synchronization requirements
Solution Approach 1:
The system divides synchronization functions into modular components distributed across frequency sub-boards and access units. Each module handles synchronization for its specific network standard independently, reducing the complexity burden on any single component while enabling multi-network support through systematic integration.
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
Enables simultaneous access and co-site coverage of multiple TDD networks, including combinations of 4G and 5G TDD networks, with adaptive synchronization and real-time tracking, and supports high-bandwidth remote coverage.
Implementation Method 1
supports high-bandwidth remote applications through analog optical fiber connections
Data Source
AI summary
A distributed antenna system includes at least one remote unit and a first access unit. The first access unit includes at least one frequency sub-board, a first synchronization module, and a first signal processing module. At least one frequency sub-board of the at least one frequency sub-board is configured to receive a time-division duplexing (TDD) signal. The first synchronization module is configured to be communicatively connected to the frequency sub-board receiving the TDD signal. The first signal processing module is communicatively connected to the first synchronization module and configured to process the TDD signal received via the at least one frequency sub-board.