Radio Station Dynamic Scheduling Segmentation
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Solution Overview
Problem
The increasing traffic and processing load at radio base stations pose challenges in managing dynamic scheduling, as performing it at the radio equipment controller (REC) reduces processing load but hinders cooperative control among multiple radio equipment (RE) units, while performing it at the RE facilitates flexible resource allocation but complicates centralized radio resource control.
Innovation Solution
A radio station with a separated structure that allows dynamic scheduling to be performed by either the REC or the RE, with the option to select which unit handles dynamic scheduling based on specific needs, such as reducing processing load or achieving cooperative control, by using a first and second scheduling unit respectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic scheduling is performed at the REC, then processing load is reduced, but cooperative control among multiple RE units is hindered
Solution Approach 1:
The patent segments the scheduling function into two parts: a first scheduling unit at the REC for overall coordination and a second scheduling unit at the RE for local dynamic scheduling. This segmentation allows the REC to maintain centralized control for cooperative operations while enabling the RE to perform local scheduling decisions, thus resolving the contradiction between reducing processing load and maintaining cooperative control capability.
2Adaptability or versatility
If dynamic scheduling is performed at the RE, then flexible resource allocation is achieved, but centralized radio resource control is complicated
Solution Approach 1:
The scheduling function is divided between the REC and RE, with the second scheduling unit at the RE handling dynamic scheduling for flexible resource allocation while the first scheduling unit at the REC maintains centralized control. This segmentation reduces the complexity burden on the centralized controller by localizing scheduling decisions.
Solution Approach 2:
The RE performs partial scheduling actions locally through the second scheduling unit, handling dynamic resource allocation without requiring complete centralized control. This partial action approach achieves flexibility while simplifying the centralized control architecture.
3Adaptability or versatility
If the separated structure is implemented, then independent advancement of analog RF technique and digital baseband technique is enabled, but traffic and processing load increase
Solution Approach 1:
The separated structure divides the radio base station into the REC for digital baseband processing and the RE for analog RF processing, enabling independent advancement of each technique. The scheduling units are distributed accordingly, with the REC handling overall coordination and the RE handling local scheduling, thus managing traffic and processing load efficiently across the separated architecture.
Data Source
AI summary
A radio station (1) includes a first part (1A) and a second part (1B). The second part (1B) can be arranged so as to be physically separated from the first part (1A) and is connected to the first part (1A) via a transmission line (40) so as to be able to communicate with the first part. The first part (1A) includes a first scheduling unit (20A) capable of performing dynamic scheduling to allocate a plurality of radio resources to a plurality of mobile stations or user data. The second part (1B) includes a second scheduling unit (20B) capable of performing, instead of the first scheduling unit (20A), at least a part of dynamic scheduling for a first mobile station connected to the second part (1B) among the plurality of mobile stations.