Dynamic Master-Slave Assignment in C-RAN Traffic Control
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Solution Overview
Problem
In wireless communication systems with a Centralized-Radio Access Network (C-RAN) configuration, processing resources of master station devices are either underutilized or insufficient due to uneven traffic distribution between master and slave station devices, leading to inefficient resource allocation.
Innovation Solution
A system with a control apparatus that performs switching-control of assignment relationships and data transfer paths between master and slave station devices, dynamically reallocating traffic loads to optimize resource utilization by assigning slave station devices to master station devices with available processing resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If master station devices and slave station devices are connected on a one-to-one basis, then the system structure is simple and easy to manage, but processing resources of master station devices are wasted when traffic is unevenly distributed
Solution Approach 1:
The patent segments the fixed one-to-one correspondence between master and slave station devices by introducing a control apparatus that dynamically manages multiple assignment relationships. This allows slave station devices to be reassigned to different master station devices based on traffic conditions, transforming the rigid segmented structure into a flexible one where segments (assignment relationships) can be reconfigured without changing the overall system architecture.
Solution Approach 2:
The patent implements dynamics by enabling the assignment relationship between master and slave station devices to change dynamically based on traffic distribution. The control apparatus monitors traffic conditions and reassigns slave station devices to master station devices with available processing resources, making the previously static one-to-one mapping into a dynamic many-to-many relationship that adapts to varying load conditions.
2Productivity
If more master station devices are deployed to handle increased traffic, then processing capacity increases, but device complexity and cost increase
Solution Approach 1:
The patent applies universality by enabling master station devices to handle multiple slave station devices simultaneously based on traffic conditions. Instead of requiring dedicated one-to-one pairs, each master station device can serve multiple slave station devices when processing resources are available, increasing system capacity without proportionally increasing the number of master station devices.
Solution Approach 2:
The control apparatus implements feedback by monitoring the processing load and traffic distribution across master station devices, then using this information to dynamically reassign slave station devices. This closed-loop control ensures that processing capacity is optimized based on actual conditions, allowing the system to handle increased traffic by better utilizing existing resources rather than simply adding more devices.
3Productivity
If traffic load is increased beyond initial processing capacity, then system throughput increases, but processing quality and reliability deteriorate
Solution Approach 1:
The control apparatus continuously monitors traffic distribution and processing load conditions, providing feedback that triggers dynamic reassignment of slave station devices to master station devices with sufficient available resources. This feedback mechanism ensures that processing quality is maintained by preventing overload conditions, while still allowing the system to handle increased overall throughput through better resource utilization.
Solution Approach 2:
The patent introduces dynamics in the assignment relationships, allowing the system to adapt to varying traffic loads in real-time. When traffic exceeds initial processing capacity, the dynamic reassignment mechanism redistributes load across available master station devices, maintaining processing quality by ensuring no single device becomes overloaded, thereby supporting higher overall throughput reliably.
Data Source
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AI summary
Provided is a control apparatus that controls any one or all of a plurality of slave station apparatuses communicating with a terminal apparatus, a plurality of master station apparatuses that control the slave station apparatuses, and a transfer apparatus that transfers data transmitted and received between the master station apparatuses and the slave station apparatuses, the control apparatus including an information acquisition unit that acquires information regarding traffic of the data transmitted and received between the master station apparatuses and the slave station apparatuses, and a switching control unit that performs, on the basis of the information regarding the traffic acquired by the information acquisition unit, switching-control of an assignment relationship between the master station apparatus and the slave station apparatus and switching-control of a transfer path of data between the master station apparatus and the slave station apparatus.