Communication Control Device Beam Allocation for Distributed Antenna Systems
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Solution Overview
Problem
In high frequency band distributed antenna systems, the overhead for beam search increases with the number of distributed antennas, leading to decreased data transmission efficiency.
Innovation Solution
A control method for a communication control device that selects a beam for communication with a terminal station at some base stations and allocates candidate beams for other base stations based on pre-stored combination information, reducing the need for individual beam selection at each base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam search is performed at each distributed antenna, then communication quality is improved, but overhead increases
Solution Approach 1:
The patent combines beam search operations across multiple distributed antennas by having the terminal perform beam search for one reference antenna and then allocate candidate beams to other antennas based on stored combination information, merging what would otherwise be separate beam search processes
Solution Approach 2:
The patent performs preliminary action by storing beam combination information in advance at the terminal, which allows subsequent beam allocation to distributed antennas to be done without additional beam search overhead
2Adaptability or versatility
If individual beam selection is performed at each base station, then communication adaptability is improved, but system complexity increases
Solution Approach 1:
The patent performs preliminary action by pre-storing beam combination information that maps reference antenna beams to candidate beams for other antennas, enabling adaptive beam allocation without real-time complex calculations at each base station
Solution Approach 2:
The terminal performs self-service by autonomously allocating candidate beams to distributed antennas based on the pre-stored combination information and the beam selected for the reference antenna, without requiring complex coordination between base stations
Data Source
AI summary
One aspect of the present invention is a control method of a communication control device for controlling communication of a plurality of base stations in a distributed antenna system, a control method, comprising: a selection step for selecting a beam for communication with a terminal station at some of a plurality of base stations; and an allocation step of allocating a candidate beam associated in advance with the beam selected by a selection step as the candidate beam in which base stations other than some of base stations perform communication with terminal stations.