Wireless Channel Resource Unit Allocation for Interference Mitigation
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Solution Overview
Problem
The overlap of frequency bands between unlicensed wireless wide area networks and Wi-Fi networks leads to spectrum access and interference issues, with no standardized channel assignment/selection protocol to mitigate these problems, resulting in degraded performance of wireless local area networks.
Innovation Solution
A method for enhanced channelization in wireless communication networks, involving detection of unlicensed wireless wide area network signals, determination of their bandwidth, and strategic allocation of wireless channels and resource units to minimize interference, including applying positive or negative biases to dynamic frequency selection channels based on signal quality and client device requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If unlicensed wireless wide area networks and Wi-Fi networks operate in overlapping frequency bands, then spectrum utilization is improved, but interference and co-channel contention increase
Solution Approach 1:
The patent divides the wireless channel into multiple resource units (RUs) with different bandwidths. By segmenting the frequency spectrum into smaller allocable units, the system can assign appropriate RU sizes to different client devices based on their specific requirements, thereby improving spectrum utilization while managing interference through selective allocation rather than uniform channel assignment
Solution Approach 2:
The patent applies different channel allocation strategies to different client devices based on their individual characteristics and requirements. Each client device receives a customized resource unit allocation tailored to its specific needs, allowing the system to optimize performance for each device while managing overall spectrum usage and interference patterns
2Object-affected harmful factors
If standardized channel assignment protocol is implemented, then interference mitigation is improved, but device complexity and implementation difficulty increase
Solution Approach 1:
The patent implements a self-service mechanism where client devices autonomously select their preferred channel bandwidth sizes based on their own requirements. The access point then allocates appropriate resource units without requiring complex centralized coordination or standardized negotiation protocols, thereby reducing implementation complexity while still achieving effective interference mitigation through adaptive allocation
Solution Approach 2:
The patent changes the parameter of channel bandwidth allocation from fixed standardized values to dynamically adjustable sizes. By allowing flexible bandwidth allocation adapted to specific operational conditions and device requirements, the system achieves effective interference mitigation without being constrained by rigid standardized protocols
3Productivity
If channel bandwidth is increased to accommodate more frequencies, then data capacity is improved, but susceptibility to interference from unlicensed networks increases
Solution Approach 1:
The patent segments wide channels into multiple smaller resource units that can be selectively allocated. This allows the system to provide large aggregate bandwidth capacity while avoiding continuous exposure to wideband interference by distributing traffic across multiple smaller, independently allocable frequency segments
Solution Approach 2:
The patent implements dynamic resource unit allocation where the bandwidth size assigned to each client device can change based on current interference conditions and traffic requirements. This dynamic adaptation allows the system to optimize data capacity while minimizing susceptibility to interference by adjusting allocation strategies in real-time
Data Source
AI summary
Techniques for channelization of a wireless communication network in the presence of interference are described. In one embodiment, a method includes detecting an unlicensed wireless wide area network signal. The method includes selecting a wireless channel for a wireless local area network that includes frequencies associated with the unlicensed signal. The method includes allocating a first portion of the wireless channel that includes frequencies associated with the unlicensed signal to a first plurality of resource units and allocating a second portion of the wireless channel that excludes frequencies associated with the unlicensed signal to a second plurality of resource units. The method includes assigning the first plurality of resource units to a first group of client devices, and assigning the second plurality of resource units to a second group of client devices.