Multi-Channel Wireless Base Station for White Space Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing IEEE 802.22 wireless communication system is inadequate for providing high-quality communication services when multiple customer premises equipment (CPE) are connected, as it does not effectively utilize multiple channels, leading to inefficient use of white space and increased costs for system construction.
Innovation Solution
A multi-channel wireless communication system is developed with a base station and terminal stations equipped with intensive control units that dynamically manage and allocate multiple channels, allowing for robust and high-speed data transmission by duplicating or dividing data across channels, and include mechanisms for channel addition, switching, and data convergence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single channel is used for wireless communication in the IEEE 802.22 system, then the system structure is simple and construction costs are low, but communication quality deteriorates when multiple CPE are connected and system productivity is limited
Solution Approach 1:
The patent segments the wireless communication system into multiple independent channels, allowing simultaneous communication with multiple CPE devices. Each channel operates independently with its own resource allocation, enabling the system to handle multiple connections without interference, thus improving communication quality and productivity while maintaining manageable complexity through modular channel structures.
Solution Approach 2:
The patent implements multi-functionality by enabling the base station to simultaneously manage multiple channels for different CPE devices. The system universally applies the same communication protocols and resource allocation mechanisms across all channels, allowing a single system architecture to serve multiple communication purposes and support various CPE connections concurrently.
2Speed
If multiple channels are operated simultaneously, then communication speed and robustness are improved, but system complexity and construction costs increase
Solution Approach 1:
The patent applies dynamics by enabling flexible channel allocation and resource management that adapts to varying communication demands. The system can dynamically activate or deactivate channels based on traffic requirements, and adjust resource allocation parameters in real-time, allowing high-speed communication when needed while reducing system complexity during low-demand periods.
Solution Approach 2:
The patent utilizes parameter changes by adjusting communication parameters such as modulation schemes, coding rates, and power allocation across different channels based on channel conditions and traffic requirements. This enables the system to optimize communication speed on each channel while managing overall system complexity through adaptive parameter adjustment rather than fixed complex configurations.
3Reliability
If data is duplicated across multiple channels in robust mode, then communication reliability is improved, but data transmission efficiency decreases
Solution Approach 1:
The patent implements partial action by applying data duplication selectively rather than universally across all channels. The system duplicates critical control data and signaling information across multiple channels to ensure reliability, while allowing bulk data transmission to proceed more efficiently with less redundancy, thus balancing reliability requirements with data transmission efficiency.
Solution Approach 2:
The patent applies local quality by differentiating the treatment of different data types across channels. Critical control messages and synchronization data receive robust duplicate transmission for reliability, while user data traffic allows for more efficient single-channel transmission. This localized application of duplication strategies optimizes both reliability and efficiency based on specific data requirements.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention introduces a multichannel MAC into a white-space-using system. A base station and a terminal station are each configured from a plurality of wireless communication units and centralized control units thereof. Each of the wireless communication units wirelessly transmits/receives for one channel. The base station operates one or more channels according to white-space-channel status, and is assigned to a terminal station. When operating a plurality of channels, it is possible to select a redundancy mode for assigning data by duplicating the terminal-station data in a plurality of channels, and a high-speed mode for dividing the data and distributing the data among the plurality of channels.