Multi-Channel Inter-Base Station Communication via Slotted Coexistence Windows
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Solution Overview
Problem
Current communication systems for wireless regional area networks (WRAN) face inefficiencies in multi-channel inter-base station communication, particularly when neighboring cells operate on different channels or lack coordinated transmission and reception, leading to poor co-existence communication efficiency.
Innovation Solution
A multi-channel inter-BS communication system with slotted co-existence windows (CWs) is introduced, featuring a conference channel, slotted CWs, periodic channel hosting, and modulo scheduling to facilitate efficient communication among WRAN cells operating on different channels by ensuring coordinated data transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If WRAN cells operate on different channels without coordinated transmission and reception, then channel diversity and spectrum utilization are improved, but co-existence communication efficiency deteriorates
Solution Approach 1:
The patent implements periodic co-existence windows within frame structures where WRAN cells periodically switch to a common channel for coordinated communication. This periodic action allows cells operating on different channels to efficiently exchange co-existence information at regular intervals, resolving the contradiction between channel diversity and communication efficiency.
Solution Approach 2:
The patent introduces a common channel as an intermediary medium that facilitates communication between WRAN cells operating on different channels. This intermediary channel serves as a meeting point where cells can exchange co-existence information without interfering with their primary channel operations, thus maintaining both channel diversity and communication efficiency.
2Ease of operation
If contention-based protocols are used for co-existence communication, then protocol simplicity and ease of implementation are improved, but communication reliability and success rate deteriorate
Solution Approach 1:
The patent performs preliminary actions by pre-scheduling co-existence windows and pre-coordinating transmission/reception slots before actual communication occurs. This preliminary coordination ensures that when WRAN cells communicate during designated windows, they do so in a coordinated manner, significantly improving communication success rates while maintaining protocol simplicity.
Solution Approach 2:
The patent introduces dynamic coordination mechanisms where WRAN cells can adaptively adjust their transmission and reception timing within the framework of contention-based protocols. This dynamic approach allows cells to respond to channel conditions and traffic patterns, improving communication reliability without sacrificing the simplicity of the underlying protocol structure.
Data Source
AI summary
The invention relates to systems and methods for spectrum sharing and communication among several wireless communication networks with overlapping service areas (or cells), especially to Wireless Regional Area Networks (WRANs). Particular embodiments of the invention disclose using a conference channel to communicate between base stations. Other embodiments use slotted coexistence windows within frames to transmit and receive information, including for reserving transmission times within subsequent frames.