Multiplexed Radio Channel Modulation for Stable Transmission Capacity
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Solution Overview
Problem
Existing radio communication systems face instability in maintaining desired transmission capacity when some channels become unusable due to interference or failure, leading to packet loss and service quality issues.
Innovation Solution
A wireless communication system and device that utilize a modulation scheme change process to switch to higher-capacity schemes and employ backup channels when necessary, ensuring stable transmission capacity by multiplexing multiple channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple wireless channels are multiplexed to secure large transmission capacity, then transmission capacity is improved, but system reliability deteriorates when some channels become unusable due to interference or failure
Solution Approach 1:
The patent implements dynamic adaptation of modulation schemes based on real-time channel conditions. When channels become unusable, the system dynamically switches from higher-order modulation (e.g., 64QAM) to more robust lower-order modulation (e.g., QPSK), allowing the system to maintain service continuity while preserving high transmission capacity when channels are available
Solution Approach 2:
The patent changes the modulation scheme parameter according to channel usability status. By monitoring channel conditions and adjusting the modulation order dynamically, the system can maintain reliable communication across varying channel conditions while maximizing transmission capacity when channels are healthy
2Reliability
If operation continues on remaining channels when some channels become unusable, then service continuity is maintained, but transmission capacity decreases due to operating in a smaller band
Solution Approach 1:
The patent compensates for reduced bandwidth by increasing the modulation order when channels are usable. This allows the system to maintain high transmission capacity even when fewer channels are available, as each active channel contributes more data rate through higher-order modulation
3Productivity
If packet loss occurs when originally necessary band cannot be secured, then service quality deteriorates, but the system lacks mechanisms to prevent this
Solution Approach 1:
The patent implements feedback mechanisms where the communication device monitors channel conditions and notifies the partner device of modulation scheme changes. This coordinated feedback ensures both ends synchronize their modulation settings, preventing packet loss and maintaining service quality while maximizing transmission capacity
Data Source
AI summary
The present disclosure relates to a wireless communication system suitable for stably securing a transmission capability in a multiplex transmission scheme using a plurality of channels, and an object thereof is to secure a desired transmission capacity even though some channels become unusable. The wireless communication device and the communication partner device establish communication by using a plurality of channels in a multiplexed manner, and each of the wireless communication device and the communication partner device has a function responding to a change of a modulation scheme used for wireless communication. The wireless communication device detects an occurrence of an unusable state for each of the plurality of channels. When the unusable state is detected, the working modulation scheme is changed to another modulation scheme that generates a larger transmission capacity to secure a desired transmission capacity in a usable channel.