5G Remote Unit Synchronization via 4G TDD Intermediary
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current distributed communication systems face challenges in synchronizing 5G signals, particularly in indoor environments with limited cellular coverage, as 5G TDD synchronization is slower and can compress 5G receivers, preventing connection establishment with RF services.
Innovation Solution
The system synchronizes remote units operating with 5G signals by initially connecting them to a 4G TDD source for expedited synchronization, using the downlink synchronization process of 4G instead of the normal 5G process, and then switching back to 5G TDD, ensuring rapid synchronization without compressing the 5G receiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If 5G TDD synchronization is used, then 5G remote units can operate independently, but synchronization is slower and compresses 5G receivers preventing connection establishment
Solution Approach 1:
The patent applies preliminary action by first synchronizing 5G remote units using 4G TDD synchronization procedures before switching to 5G TDD synchronization. This preliminary 4G-based synchronization establishes timing and frequency references in advance, allowing the 5G receivers to be properly prepared and avoid compression issues when 5G synchronization begins, thereby improving connection establishment reliability while managing synchronization time.
Solution Approach 2:
The patent uses 4G TDD synchronization as an intermediary mechanism to facilitate 5G remote unit synchronization. By introducing 4G synchronization procedures as a mediator, the system can establish initial synchronization parameters without the compression problems that occur with direct 5G TDD synchronization, enabling reliable 5G connection establishment.
2Adaptability or versatility
If 5G TDD synchronization is used, then 5G service independence is achieved, but 5G receiver compression occurs
Solution Approach 1:
The patent introduces 4G TDD synchronization as an intermediary step that mediates between the need for 5G service independence and the harmful receiver compression effect. The 4G synchronization process acts as a buffer that prepares the system without causing compression, allowing 5G receivers to transition to independent 5G TDD operation safely.
Solution Approach 2:
By performing 4G TDD synchronization as a preliminary action before 5G TDD synchronization, the system prepares the timing and frequency references in advance without causing receiver compression. This preliminary preparation enables subsequent 5G service independence while avoiding the harmful compression effects during the critical connection establishment phase.
3Productivity
If 4G TDD synchronization is used for 5G remote units, then synchronization speed increases, but system complexity increases due to switching mechanisms
Solution Approach 1:
The patent applies dynamics by implementing a switchable synchronization architecture that can dynamically transition between 4G TDD and 5G TDD synchronization modes. The system dynamically selects the appropriate synchronization source based on operational requirements, enabling fast initial synchronization via 4G while maintaining the capability for independent 5G operation, thus balancing synchronization speed with manageable system complexity.
Data Source
AI summary
Systems and methods for time division duplex (TDD) synchronizing in distributed communication systems (DCSs) synchronize remote units operating with 5G signals by initially connecting these remote units to a 4G TDD source, and once the remote units are synchronized, switching back to a 5G TDD source. By using the downlink synchronization process of 4G instead of the normal synchronization process of 5G, the synchronization of the remote units using 5G is expedited. Further, the 5G receiver is not compressed or otherwise negatively impacted.