Collision Detection in Wider Bandwidth Wireless Systems
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Solution Overview
Problem
In wireless communication networks, especially those operating with wideband transmissions, collisions between overlapping basic service sets (BSSs) occur due to hidden nodes, leading to interference and reduced throughput, which existing technologies fail to adequately address.
Innovation Solution
Implementing a system that uses a VHT BSS with a primary channel and up to three non-primary channels, employing a contention-based collision-avoidance protocol like CSMA/CA, and incorporating interference estimation protocols to dynamically select and adjust bandwidth, thereby reducing collisions across multiple channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wide bandwidth channels are used to increase throughput, then data transfer capacity is improved, but collision probability increases due to hidden nodes in overlapping BSSs
Solution Approach 1:
The wide bandwidth channel is segmented into multiple sub-channels, each monitored independently for collisions. This allows the system to detect and avoid collisions on specific sub-channels while maintaining transmission on others, thereby reducing overall collision probability while preserving throughput capacity.
Solution Approach 2:
The patent introduces a new dimension of collision detection by monitoring multiple frequency sub-channels simultaneously. This multi-dimensional approach allows the system to identify hidden node collisions that would be undetectable in traditional single-channel monitoring, resolving the contradiction between wide bandwidth usage and collision avoidance.
2Reliability
If multiple channels are monitored for collision detection, then collision avoidance is improved, but system complexity increases
Solution Approach 1:
The monitoring system is designed to serve multiple functions: it detects collisions, estimates interference levels, and provides feedback for bandwidth adjustment. This multi-functionality reduces the need for separate dedicated components, thereby managing system complexity while improving collision detection accuracy across multiple channels.
Solution Approach 2:
The system performs self-diagnosis and self-adjustment by automatically detecting collisions and interference on monitored channels, then autonomously adjusting transmission parameters. This self-service capability reduces the need for external control mechanisms, managing complexity while maintaining high detection accuracy.
3Use of energy by moving object
If interference estimation protocols are implemented, then energy efficiency is improved, but device complexity increases
Solution Approach 1:
The interference estimation protocol performs preliminary assessments of channel conditions before full transmission begins. By estimating interference levels in advance, the system can avoid energy-wasting transmissions on channels with high interference, thereby improving energy efficiency while the protocol complexity is managed through standardized measurement procedures.
Data Source
AI summary
Embodiments of systems and methods for providing collision detection in a wider bandwidth are generally described herein. Other embodiments may be described and claimed.