Wireless Communication Channel Filtering for Ad-Hoc Network Interference
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Solution Overview
Problem
Ad-hoc networks experience communication interference due to overlapping frequency bands, leading to improper usage of communication services when different channels are used by the same nodes.
Innovation Solution
A wireless communication apparatus that includes a transmitting unit, a receiving unit, a judging unit, and a reception controlling unit to determine and manage channel information, ensuring that only communication data intended for the target channel is processed and discarded otherwise, thereby mitigating interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple channels with overlapping frequency bands are used for communication in ad-hoc networks, then communication capacity and service diversity are improved, but communication interference and reliability deteriorate
Solution Approach 1:
The patent segments the communication data by associating each data packet with specific channel information (channel number and frequency band). The receiving node segments the received data based on this channel information, directing different data to different processing paths. This segmentation allows multiple channels to operate simultaneously without interference, resolving the contradiction between service diversity and communication reliability.
2Area of stationary object
If nodes receive all communication data across multiple channels, then communication coverage is improved, but interference from non-target channels increases
Solution Approach 1:
The patent introduces channel information (channel number and frequency band) as an intermediary element that mediates between the received communication data and the processing logic. This intermediary allows the system to distinguish between target and non-target channel data, enabling selective processing that maintains wide coverage while filtering out harmful interference from non-target channels.
3Productivity
If channel frequency bands overlap to enable multi-channel communication, then network capacity is improved, but frequency interference between channels increases
Solution Approach 1:
The patent changes the parameter identification method by explicitly including both channel number and frequency band information in the data packets. This parameter change allows the system to manage multiple overlapping frequency bands effectively, as each data packet carries the necessary information to identify its source channel and frequency band, enabling the receiving node to process multiple channels simultaneously without frequency interference.
Data Source
AI summary
A wireless communication apparatus on the receiving side receives communication data that is a transmitted to the wireless communication apparatus using one of the plurality of channels. Subsequently, the wireless communication apparatus on the receiving side obtains channel information contained in the communication data received by the receiving unit and judges whether the obtained channel information is target information indicating a channel of a processing target. The wireless communication apparatus on the receiving side performs a receiving process on the received communication data, when the judging unit determines that the obtained channel information is the target information, performs a receiving process on the communication data received by the receiving unit and that, when the judging unit determines that the obtained channel information is not the target information, discards the received communication data.