Distributed Antenna Uplink Summation With TSN Time Synchronization
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Solution Overview
Problem
Distributed antenna systems face challenges in achieving accurate time synchronization and addressing heterogeneous interworking and big data transmission requirements in next-generation networks, leading to increased construction costs and limited capabilities in handling temporal and spatial traffic fluctuations.
Innovation Solution
A distributed antenna system utilizing Time-Sensitive Networking (TSN) technology for precise time synchronization and uplink packet summation, optimizing bandwidth utilization and minimizing latency through an uplink summation device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional clock synchronization or time division multiplexing is used for time synchronization, then time synchronization can be achieved in limited environments, but construction cost increases and the system cannot address new requirements such as heterogeneous interworking and big data transmission
Solution Approach 1:
The patent changes the synchronization parameter from traditional clock synchronization to TSN-based time synchronization, which uses time-aware shaping and class-based token bucket algorithm to achieve both accurate time synchronization and adaptability to heterogeneous interworking and big data transmission requirements
Solution Approach 2:
The TSN-based synchronization system provides multi-functionality by simultaneously achieving time synchronization, traffic shaping, and support for heterogeneous protocols, eliminating the need for separate synchronization mechanisms and expanding the system's applicability to various network scenarios
2Area of stationary object
If multiple physically separated antennas are used to expand communication service area, then coverage is improved, but time synchronization becomes more difficult and construction cost increases
Solution Approach 1:
The patent introduces TSN switches as intermediary devices that manage time synchronization between distributed antennas. These switches implement time-aware shaping and coordinate time information across the network, simplifying the synchronization process while enabling expanded service coverage
Solution Approach 2:
The system performs preliminary time synchronization setup using TSN protocols before data transmission begins. Time information is pre-configured and distributed through the network, allowing multiple antennas to operate in a coordinated manner without complex real-time synchronization adjustments
3Quantity of substance
If uplink packet summation is performed to efficiently utilize bandwidth, then bandwidth efficiency is improved, but latency may increase due to packet processing time
Solution Approach 1:
The patent implements dynamic packet summation decisions based on real-time traffic conditions. The system adjusts summation parameters and timing to optimize the balance between bandwidth efficiency and latency, using adaptive algorithms that respond to changing network states
Solution Approach 2:
The system performs packet summation in periodic intervals rather than continuously, allowing efficient bandwidth utilization during high-traffic periods while maintaining low latency during critical transmission windows. Time-aware shaping schedules packet processing to minimize overall latency
Data Source
AI summary
There is provided a method of processing uplink Ethernet packets of an aggregation node included in a distributed antenna system, the method includes: receiving a plurality of uplink Ethernet packets; summing the plurality of received uplink Ethernet packets; and transmitting the summed uplink Ethernet packets in an uplink direction.