Distributed Base Station Intermediate Unit Time-Sharing
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Solution Overview
Problem
Current distributed base station systems face limitations in efficiently utilizing point-to-point connections between intermediate and remote units, leading to bottlenecks in data transmission, especially when multiple operators share the same infrastructure, which hampers multi-operator and multi-band deployments due to unused RF bandwidth and limited cable capacity.
Innovation Solution
Implementing a method where data from different base units is sent over a shared point-to-point connection at different time points using an unlicensed frequency band, with the intermediate unit indicating when the channel is free, mimicking the 'listen before talk' mechanism, allowing for efficient time-sharing of the connection and reducing the risk of bottlenecks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple base units share the same point-to-point connection to a remote unit, then infrastructure sharing and cost efficiency are improved, but transmission bottlenecks and capacity limitations occur
Solution Approach 1:
The patent segments the shared point-to-point connection into multiple virtual channels or logical streams, allowing data from different base units to be transmitted simultaneously over the same physical connection without interference. This segmentation enables multiple operators to share the infrastructure while maintaining dedicated transmission paths for each operator's data.
Solution Approach 2:
The patent implements periodic time-division multiplexing where data from different base units is transmitted in alternating time slots over the shared connection. The system periodically switches between different base units' data streams, ensuring each operator receives adequate bandwidth while efficiently utilizing the shared infrastructure capacity.
2Ease of manufacture
If cable capacity is limited in distributed antenna systems, then installation simplicity and cost are improved, but RF bandwidth utilization is reduced
Solution Approach 1:
The patent changes the transmission parameters by modulating multiple carriers or using advanced modulation schemes over the limited cable capacity. This allows the system to transmit more information within the same physical cable bandwidth, effectively increasing RF bandwidth utilization without requiring additional cable infrastructure.
Solution Approach 2:
The patent makes the limited cable connection serve multiple functions by enabling it to carry data from multiple base units, support multiple frequency bands, and accommodate multiple operators simultaneously. The single cable infrastructure is designed to perform multiple transmission tasks that would traditionally require separate dedicated connections.
3Productivity
If data from multiple base units is transmitted simultaneously over a shared connection, then throughput is improved, but signal interference and collision increase
Solution Approach 1:
The patent implements feedback mechanisms where the remote unit monitors the shared connection for signal quality and transmission status. Based on this feedback, the system dynamically adjusts transmission parameters, manages collision avoidance, and coordinates data transmission from multiple base units to maintain both high throughput and reliable delivery.
Solution Approach 2:
The patent introduces dynamic resource allocation where transmission rights, time slots, and bandwidth allocation are continuously adjusted based on real-time network conditions, traffic demand, and signal quality. This dynamic management allows the system to optimize throughput while maintaining reliability by adapting to changing conditions rather than using fixed allocation schemes.
Data Source
AI summary
A method performed by an intermediate unit of a distributed base station system of a wireless communication network. The distributed base station system has a first base unit and a second base unit connected to the intermediate unit. The intermediate unit is further connected to a first remote unit, which is further connected for distributing wireless signals to pieces of User Equipment (UEs). The intermediate unit receives, from the first base unit, first data and sends the first data over a point-to-point connection to the first remote unit for further distribution wirelessly over a radio channel to the UEs. In response to the reception of the first data, a first indication is sent to the second base unit that the radio channel is free. The second base unit can send second data that is then to be sent from the remote unit towards the UEs on the radio channel.