Resource Allocation Controller for Shared Radio Access Networks
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Solution Overview
Problem
Current RAN sharing specifications lack mechanisms for exchanging cell resource utilization information on a per-sharing operator basis, preventing effective load distribution and quota re-configuration in shared RAN scenarios, and limiting the ability to dynamically adjust resource allocations among operators.
Innovation Solution
Implementing a resource allocation controller that receives and reports cell resource utilization measurements from base stations to a central node, allowing for reallocation of resources among operators based on service agreements and policies, with enhanced message formats to include per-PLMN or per-PLMN group reporting and quota reconfiguration capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If current RAN sharing specifications are used, then resource allocation between operators is possible, but per-operator resource utilization information cannot be exchanged between base stations, preventing effective load balancing
Solution Approach 1:
The patent segments the resource utilization information by introducing per-PLMN (Public Land Mobile Network) reporting, which divides the aggregated cell resource utilization into separate reports for each operator. This allows base stations to receive and process resource utilization data specific to each sharing operator, enabling differentiated load balancing decisions for each operator's traffic while maintaining the shared RAN infrastructure.
2Adaptability or versatility
If static resource allocation is used, then service agreement compliance is ensured, but dynamic adjustment of resource quotas based on current utilization needs is prevented
Solution Approach 1:
The patent introduces dynamic resource allocation mechanisms that allow resource quotas to be adjusted in real-time based on current network conditions and service level agreements. The system transitions from static pre-configured allocations to dynamic adjustments triggered by resource utilization reports, enabling operators to obtain additional resources during high-demand periods while releasing resources when utilization is low, all within the framework of their service agreements.
Solution Approach 2:
The patent implements feedback loops where base stations report resource utilization measurements to a resource allocation controller, which then adjusts resource quotas accordingly. The feedback mechanism includes periodic reporting of cell resource utilization per PLMN, comparison against service level thresholds, and automated quota adjustments, creating a closed-loop system that continuously optimizes resource allocation based on actual network conditions.
3Productivity
If centralized resource control is implemented, then optimal resource distribution can be achieved, but information exchange mechanisms between base stations and central nodes must be enhanced
Solution Approach 1:
The patent adds a new dimension to the information exchange by introducing per-PLMN identification to the existing resource utilization reporting framework. Instead of reporting only aggregated cell-level utilization, the system now reports utilization broken down by each PLMN operating in the cell, adding the operator dimension to the reporting structure without fundamentally changing the base reporting mechanism.
Data Source
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AI summary
A method and apparatus for allocating resources of a cell served by a base station among a plurality of operators sharing the cell resources are disclosed. One embodiment is a method including receiving from a central node serving at least the base station, a resource allocation request instructing the base station to reallocate the cell resources among the plurality of operators. The method further includes allocating cell resources among the plurality of operators according to the resource allocation request received from the central node.