Dynamic Spectrum Allocation for Fairness and Contiguity
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Solution Overview
Problem
Conventional methods for allocating wireless channels in CBRS networks fail to ensure fairness among licensees, neglect geographical contiguity, and often favor larger entities, lacking flexibility in channel allocation priorities and collaboration among licensees.
Innovation Solution
A communication management resource receives channel selection information from multiple entities, prioritizing channel allocation based on individual preferences and attributes, such as contiguity and quality, to allocate wireless channels in a way that satisfies the highest priority rankings across different regions, using weight factors and ranking metrics to optimize channel assignments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional SAS allocates wireless channels to PAL users following fixed rules, then interference is prevented and spectrum use is increased, but fairness among licensees is not ensured and larger entities are favored
Solution Approach 1:
The patent applies dynamics by transitioning from fixed, static channel allocation rules to a dynamic system where the SAS can adaptively adjust channel assignments based on real-time conditions, licensee priorities, and channel characteristics. The SAS now considers multiple factors including geographical contiguity, channel quality, and licensee-specific preferences to make flexible allocation decisions that ensure fairness while preventing interference.
Solution Approach 2:
The patent implements parameter changes by modifying the allocation criteria from simple fixed rules to a multi-parameter evaluation system. The SAS now considers parameters such as geographical contiguity requirements, channel quality metrics, licensee priority levels, and channel characteristics (e.g., band edge channels requiring reduced power). This multi-parameter approach enables fairer allocation while maintaining interference prevention.
2Stability of the object's composition
If SAS assigns contiguous channels to PAL users, then geographical contiguity is maintained, but flexibility in channel allocation is reduced
Solution Approach 1:
The patent applies dynamics by making geographical contiguity a flexible consideration rather than a rigid requirement. The SAS dynamically evaluates whether to maintain contiguity based on specific conditions, allowing it to temporarily assign non-contiguous channels when necessary to protect incumbent users or optimize spectrum utilization, while still prioritizing contiguity when feasible.
Solution Approach 2:
The patent implements preliminary action by having the SAS evaluate contiguity requirements and channel availability in advance of final allocation decisions. The system pre-assesses whether contiguous channels can be provided and prepares alternative non-contiguous assignments if needed, enabling flexible responses to changing conditions while maintaining stability when possible.
3Productivity
If band edge channels are used, then spectrum utilization is maximized, but transmission power must be reduced to meet OBOE requirements
Solution Approach 1:
The patent implements parameter changes by modifying transmission power levels based on channel location. The SAS identifies band edge channels and automatically adjusts the power parameters for users assigned to these channels to comply with OBOE requirements. This allows the system to maximize spectrum utilization by assigning edge channels while managing power constraints through automated parameter adjustment.
Data Source
AI summary
A communication management resource receives channel selection information from any number of licensed entities to operate in a shared band. Assume that the communication management resource receives first channel selection information indicating channels of interest (or band partitions, bandwidth, bandwidth partitions, sub-band portions, sub-band segments, etc., of an available wireless spectrum or band) to a first entity licensed to wirelessly communicate in a wireless network. Further, the communication management resource receives second channel selection information indicating channels of interest to a second entity licensed to wirelessly communicate in the wireless network. Based on the first channel selection information and the second channel selection information, the communication management resource allocates wireless channels amongst the first entity and the second entity. Thus, the communication management resource uses the first channel selection information and the second channel selection information as guidance to assigning one or more wireless channels in the shared band to the multiple entities having licenses to use the wireless band.