CRAN Radio Resource Partitioning for Scalable Multi-Scheduler Cells
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Solution Overview
Problem
Current centralized radio access networks (CRAN) face challenges in efficiently scheduling wireless devices across multiple processing systems with separate schedulers due to high synchronization requirements and limited bandwidth in the transport network, leading to inefficiencies in resource allocation.
Innovation Solution
Implementing a method for radio resource partitioning between schedulers, allowing dynamic adjustment of resource allocations based on statistical usage history and end-goal policies, with a master scheduler arbitrating resource utilization and minimizing coupling between baseband processing systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple processing systems with separate schedulers are used to dynamically scale CRAN, then CRAN scalability is improved, but scheduling efficiency and resource allocation effectiveness deteriorate due to high synchronization requirements and limited bandwidth
Solution Approach 1:
The patent divides the radio resources into separate partitions, with each processing system scheduling only its assigned partition. This segmentation allows independent scheduling decisions without requiring synchronization across all systems, thereby improving scalability while maintaining scheduling efficiency for each partition.
Solution Approach 2:
The patent introduces a master scheduler that acts as an intermediary to arbitrate between multiple contributor schedulers. The master scheduler receives scheduling requests from contributor schedulers, resolves conflicts, and coordinates resource allocation. This intermediary approach eliminates the need for direct synchronization between all processing systems while maintaining overall scheduling efficiency.
2Adaptability or versatility
If multiple processing systems with separate schedulers are used to dynamically scale CRAN, then CRAN scalability is improved, but the complexity of coordinating scheduling between systems increases
Solution Approach 1:
By segmenting radio resources into distinct partitions and assigning each to a specific processing system, the patent reduces coordination complexity. Each system independently manages its assigned partition without needing to coordinate with others, thereby improving scalability while reducing overall system complexity.
Solution Approach 2:
The master scheduler serves as a central coordinator that receives scheduling information from multiple contributor schedulers and resolves any conflicts. This intermediary structure simplifies coordination by centralizing the arbitration function, reducing the complexity that would otherwise exist in direct multi-system coordination.
3Productivity
If radio resource partitioning is implemented between multiple schedulers, then resource utilization is optimized, but the need for synchronization between schedulers increases
Solution Approach 1:
The patent segments radio resources into separate partitions that are independently managed by different processing systems. Each system schedules its assigned partition without requiring synchronization with others, thereby optimizing resource utilization while eliminating synchronization requirements between contributor systems.
Solution Approach 2:
The master scheduler acts as an intermediary that collects scheduling information from contributor schedulers and resolves conflicts. This approach allows optimized resource utilization across partitions while reducing synchronization requirements, as the master scheduler coordinates resource allocation centrally rather than requiring real-time synchronization between all systems.
Data Source
AI summary
Methods and apparatuses are provided for centralized radio access network (CRAN) scalability. In one embodiment, a network node includes processing circuitry configured to cause the network node to schedule at least one wireless device according to a radio resource partition, the radio resource partition representing a division of radio resources between at least two schedulers of a same cell, and each radio resource partition of the cell being assigned to a corresponding scheduler of the at least two schedulers; and receive, from at least one scheduler of the at least two schedulers, an indication of an amount of the radio resources that are scheduled by the at least one scheduler. In one embodiment, a network node includes processing circuitry configured to cause the network node to send, to a master scheduler, an indication of an amount of the radio resources that are scheduled by the network node.