Radio Front Haul Link Setup in Cooperative Communication
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Solution Overview
Problem
Current wireless communication systems require excessive hardware for setting up radio front haul and back haul links, which is inefficient and cannot adaptively reflect channel status changes, particularly in cooperative communication systems.
Innovation Solution
A method and apparatus for setting up a radio front haul link in a cooperative communication system, where a serving Base Station, neighbor Base Stations, Mobile Stations, and a Self-Organizing Network server work together to minimize hardware requirements and adaptively reflect channel status by exchanging measurement reports and wake-up messages to establish optimal radio front haul links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a point-to-point scheme is used to connect Base Stations for radio back haul and front haul links, then reliable communication connections are established, but excessive hardware is required
Solution Approach 1:
The patent applies universality by enabling Base Stations to use their existing access link hardware for both access communication and back haul/front haul communication. The same radio frequency unit and antenna that serve Mobile Stations are also utilized for inter-BS communication, allowing one hardware element to perform multiple functions simultaneously, thereby eliminating the need for separate dedicated hardware for back haul links.
Solution Approach 2:
The patent merges the access link and back haul link functions into a single hardware infrastructure. By combining the radio frequency units and antennas used for access communication with those used for inter-BS communication, the system consolidates previously separate hardware requirements into a unified structure, reducing overall hardware quantity while maintaining both communication functions.
2Stability of the object's composition
If dedicated hardware is allocated for each Base Station connection in a 3-tier system, then stable communication is achieved, but the system cannot adaptively reflect channel status changes
Solution Approach 1:
The patent applies dynamics by enabling the system to dynamically select and switch between different neighbor Base Stations for back haul and front haul communication based on real-time channel conditions. Instead of fixed dedicated connections, the system can adaptively change communication partners according to channel status, providing both stability through reliable connections and adaptability through dynamic reconfiguration.
Solution Approach 2:
The patent implements feedback mechanisms where Base Stations monitor channel conditions and use this information to make informed decisions about link establishment and maintenance. The measurement result report messages and channel status information feed back into the link setup process, allowing the system to adaptively respond to changing channel conditions while maintaining stable communication through selective link formation.
3Adaptability or versatility
If measurement result reports are exchanged among Base Stations and Mobile Stations, then adaptive link setup is achieved, but signaling overhead increases
Solution Approach 1:
The patent applies universality by making the measurement result reports serve multiple purposes simultaneously. The same measurement data that Mobile Stations provide for access link quality assessment is also utilized for back haul and front haul link setup decisions. This multi-functional use of measurement reports reduces the need for separate dedicated signaling for different link types, thereby reducing overall signaling overhead while maintaining adaptability.
Data Source
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AI summary
A method for setting up a radio front haul link by a serving Base Station (BS) in a cooperative communication system is provided. The method includes receiving a measurement result report message including a measurement result for each of a serving BS and neighbor BSs, determining at least one neighbor BS with which the serving BS will set up a radio front haul link according to the measurement result for each of the serving BS and the neighbor BSs, and performing a radio front haul link set up operation with the at least one neighbor BS.