Wireless Traffic Transfer for Bit Error Reduction
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently reducing bit errors due to radio wave interference or fading, especially when frequency diversity is implemented, as they require redundant frequency channels and may not effectively manage bit errors across multiple frequency channels.
Innovation Solution
A wireless communication system that utilizes a transfer control unit to reroute traffic from frequency channels with high bit error rates (BER) to channels with lower BER, and a reduction control unit to decrease the multi-level modulation number or coding rate for remaining traffic in affected channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency diversity is performed using multiple frequency channels, then the influence of fading can be reduced, but a frequency channel of a redundant system is required and bit errors cannot be reduced when errors occur simultaneously in multiple channels
Solution Approach 1:
The patent implements dynamic traffic transfer control where the transfer control unit continuously monitors BER across multiple frequency channels and dynamically transfers traffic from channels with high BER to channels with low BER in real-time. This dynamic adaptation allows the system to respond to changing channel conditions without requiring permanent redundant infrastructure.
Solution Approach 2:
The reduction control unit changes transmission parameters (modulation scheme and coding rate) based on channel conditions. When BER exceeds thresholds, the system reduces the multi-level number of modulation or coding rate to improve transmission reliability on affected channels, providing adaptive parameter adjustment without permanent redundancy.
2Reliability
If space diversity or polarization diversity is implemented, then radio wave interference and fading can be reduced, but multiple wireless facilities (antennas, waveguides, demultiplexers, receivers) are required
Solution Approach 1:
The patent makes existing frequency channels serve multiple functions by enabling dynamic traffic transfer between them. The same frequency channels used for primary transmission also serve as backup channels when BER degradation occurs, eliminating the need for separate dedicated backup facilities.
Solution Approach 2:
The system uses its own existing frequency channels to provide diversity protection rather than requiring external redundant facilities. The transfer control unit enables the system to self-manage traffic redistribution across its available channels when interference or fading is detected.
3Productivity
If traffic is maintained on all frequency channels, then channel utilization is maximized, but bit errors increase when radio wave interference or fading occurs
Solution Approach 1:
The system implements feedback-based control where BER measurements from the reception device are fed back to the transmission device. The transfer control unit uses this feedback to determine when and where to transfer traffic, and the reduction control unit uses feedback to adjust modulation and coding parameters dynamically.
Solution Approach 2:
The patent implements dynamic traffic transfer control where the transfer control unit continuously monitors BER across multiple frequency channels and dynamically transfers traffic from channels with high BER to channels with low BER in real-time. This dynamic adaptation allows the system to respond to changing channel conditions without requiring permanent redundant infrastructure.
Data Source
AI summary
According to an embodiment, there is provided a wireless communication system that transmits data from a transmission device to a reception device by using a plurality of frequency channels, in which the transmission device includes a transfer control unit that performs transfer control to transfer a part of traffic of one or more frequency channels in which a BER reaches a predetermined value to one or more other frequency channels in which a BER does not reach the predetermined value, and a reduction control unit that performs, for traffic remaining after the transfer control unit transfers a part of traffic of the frequency channels in which a BER reaches the predetermined value, reduction control to reduce at least one of a multi-level number of multi-level modulation or a coding rate.