Wireless Channel Switching Controller Reducing Control Overhead
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Solution Overview
Problem
Existing wireless communication methods face inefficiencies due to overhead from control packets and difficulty in managing interference on control channels, particularly in multi-channel communication systems where temporal synchronization is not necessary.
Innovation Solution
A wireless communication device and system that includes a radio unit capable of switching between multiple channels, with a channel list storage, channel transmission controllers, and a transmission control selector to manage channel switching based on packet content, reducing overhead and improving throughput by selectively using either a channel transmission controller or a channel search transmission controller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an in-advance sequence for notifying a transmission destination of a data channel is used before data communication, then multi-channel communication can be established, but throughput is lowered by overhead of control packets
Solution Approach 1:
The patent applies preliminary action by pre-defining multiple communication channels and their purposes before actual data transmission begins. The system establishes control channels and data channels in advance, with each channel having predetermined functions and characteristics. This allows the transmission destination to know which channel to monitor for different types of packets, eliminating the need for in-advance notification sequences and reducing control overhead.
2Reliability
If control packets are used for each packet transmission, then channel switching can be managed, but overhead increases and throughput decreases
Solution Approach 1:
The patent segments communication packets into different types with different handling rules. Control packets (such as acknowledgment packets and channel switching packets) are separated from data packets. Each packet type has a specific format and processing procedure. This segmentation allows the system to manage channel switching efficiently without requiring extensive control overhead for every single packet transmission.
Solution Approach 2:
The patent applies homogeneity by standardizing the format and processing of control packets. All control packets follow a uniform structure with consistent fields for channel identification, packet type, and control information. This homogeneous design simplifies the processing logic at both transmission and reception ends, reducing the computational overhead and improving throughput while maintaining reliable channel switching management.
3Reliability
If a dedicated control channel is used for each transmission, then interference can be addressed, but device complexity increases
Solution Approach 1:
The patent implements universality by designing control channels that serve multiple functions simultaneously. The same control channel is used for various purposes including sending acknowledgment packets, channel switching notifications, and other control information. This multi-functional approach eliminates the need for separate dedicated control channels for each transmission type, reducing device complexity while maintaining effective interference management through proper channel selection and timing.
Data Source
AI summary
In a wireless communication system managing wireless communication channels, a wireless communication device includes a radio unit communicable by switching to select any one of wireless communication channels, a channel list storage storing therein a list of the channels, a channel transmission controller controlling the radio unit to transmit a packet while switching a channel on the basis of the list, a channel search transmission controller controlling the radio unit to transmit the packet while switching the channel on the basis of the list until the packet is successfully transmitted, and a transmission control selector selecting either the channel transmission controller or the channel search transmission controller on the basis of a content of the packet of a transmission target for transmission control.