Communication Relay System Dynamic Beam Allocation
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Solution Overview
Problem
In 5G mobile communication systems, the distributed antenna system (DAS) simply directs beams in the same direction, leading to inefficient utilization of radio resources, particularly in expanding coverage areas where tower construction is difficult or limited.
Innovation Solution
A communication relay system with a master unit and remote units that perform beam forming by adjusting the phases of antenna elements, allowing for simultaneous formation of multiple beams in arbitrary directions and dynamic allocation of communication resources to optimize coverage and resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the DAS simply outputs the same signal from each remote unit with beams directed in the same direction, then the system structure is simple and easy to implement, but the utilization of radio resources is inefficient and coverage expansion is limited
Solution Approach 1:
The patent implements dynamic beam direction control where each remote unit can independently adjust its beam direction based on user positions and communication needs. The master unit coordinates these adjustments dynamically, allowing the system to adapt to changing conditions rather than using fixed identical beam directions, thereby improving radio resource utilization while maintaining system simplicity
Solution Approach 2:
The patent assigns different beam directions to different remote units based on their specific locations and the users they serve. Each remote unit optimizes its beam direction locally for its coverage area, allowing efficient resource utilization across the distributed system without requiring complex centralized control of identical beams
2Area of stationary object
If multiple remote units are deployed to expand coverage area, then the coverage range increases, but the radio resources are not efficiently utilized when all units transmit the same signal
Solution Approach 1:
The patent segments the coverage area into multiple zones, each served by a specific remote unit with optimized beam direction. This segmentation allows different parts of the coverage area to be served efficiently by dedicated units rather than all units transmitting identical signals, reducing radio resource waste while maintaining expanded coverage
Solution Approach 2:
The patent changes the beam direction parameter for each remote unit based on its location and the users it serves. By varying this key parameter across remote units rather than using identical settings, the system achieves efficient radio resource utilization across the expanded coverage area without energy waste
3Productivity
If beam forming is implemented with phase adjustment to enable multiple beams in arbitrary directions, then the communication capacity and quality improve, but the system complexity increases
Solution Approach 1:
The patent introduces a master unit as an intermediary that handles the complex coordination of beam forming across multiple remote units. The master unit receives information about user positions and determines optimal beam directions, then communicates these settings to remote units. This intermediary approach enables advanced beam forming capabilities while keeping individual remote units relatively simple
Solution Approach 2:
The master unit serves multiple functions: coordinating beam directions, managing resource allocation, and optimizing communication capacity across all remote units. This multi-functional design consolidates complexity in a single control entity, allowing remote units to focus on their primary transmission function while still achieving sophisticated beam forming performance
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances communication capacity and quality by efficiently directing beams and allocating resources, reducing power consumption and improving coverage in challenging environments, such as indoors or event halls, while maintaining compatibility with multiple communication service providers.
Implementation Method 1
Beam forming is one of the technologies attracting attention in 5G. This is a technique for cooperatively operating a plurality of antenna elements included in one antenna and forming a beam of a radio wave in a discretionary direction.
Data Source
AI summary
A communication relay system of an embodiment includes a master unit capable of transmitting/receiving a signal to/from a base station of a mobile communication system, and a plurality of remote units transmitting/receiving a signal to/from the master unit and performing radio communication with a mobile station of the mobile communication system. The master unit includes a detector, a determiner, and an allocator. The detector detects that the mobile station is located at a position where wireless communication with the plurality of remote units is possible. The determiner determines to which of the plurality of remote units a communication resource for performing radio communication with the mobile station located at a position where radio communication is possible is to be allocated. The allocator allocates a communication resource to the remote unit according to the determination result of the determiner.