Wireless Packet Handover with Buffer-Based Channel Switching
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Solution Overview
Problem
Existing wireless communication systems struggle to maintain video quality when a communication channel deteriorates, particularly in environments requiring low latency, as they fail to account for data remaining in buffers during channel handovers.
Innovation Solution
A wireless communication apparatus with a transmission control unit that manages packet transmission across multiple channels, using a first channel initially, temporarily storing packets in a buffer, and switching to a second channel if the first channel deteriorates, ensuring complete packet delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If channel switching is performed when communication quality deteriorates, then communication reliability is improved, but data transmission continuity deteriorates due to buffer data loss
Solution Approach 1:
The system performs preliminary actions by monitoring communication quality indicators and preparing for channel switching before actual deterioration occurs. The transmission control unit detects degradation trends and proactively initiates channel switching procedures, ensuring that critical data is retransmitted through the alternative channel before buffer overflow or data loss occurs.
Solution Approach 2:
The invention introduces an intermediary mechanism in the form of a transmission control unit that acts as a mediator between the physical channel layer and the data layer. This intermediary monitors channel quality, manages buffer states, and coordinates channel switching while ensuring data integrity, thus resolving the conflict between reliability improvement and transmission continuity.
2Reliability
If multiple communication channels are used for redundant data transmission, then communication reliability is improved, but system complexity increases
Solution Approach 1:
The transmission control unit is designed with multi-functionality, serving as both a monitor for channel quality, a manager for data buffering, and a coordinator for channel switching. By consolidating these functions into a single universal controller, the system achieves high reliability through multiple channels while minimizing the increase in system complexity.
Solution Approach 2:
The system dynamically changes operational parameters such as channel selection, transmission power, and buffer allocation based on real-time communication conditions. This parameter-based adaptability allows the system to maintain reliability across varying channel qualities without requiring complex structural changes or multiple dedicated controllers.
3Manufacturing precision
If channel switching timing is delayed to ensure data completion, then data integrity is improved, but response time deteriorates during handover
Solution Approach 1:
The system implements continuous feedback loops that monitor both channel quality metrics and buffer state information. This feedback mechanism enables the transmission control unit to make real-time decisions about channel switching timing, balancing data integrity requirements with response time constraints by adjusting switching thresholds based on current system state.
Solution Approach 2:
The channel switching mechanism is designed to be dynamic rather than static, with switching thresholds and timing parameters that adapt based on traffic type, buffer occupancy, and channel degradation rate. This dynamic approach allows the system to prioritize speed for time-sensitive traffic while maintaining integrity for bulk data transfers.
Data Source
AI summary
The present technology relates to a wireless communication apparatus and wireless communication method capable of reducing degradation in video quality in a case where a characteristic of a communication channel deteriorates. The wireless communication apparatus controls transmission of a packet using a plurality of communication channels, transmits the packet by using a first communication channel, transmits the packet by using a second communication channel, and temporarily accumulates the packet in a transmission buffer. Then, in a case where a characteristic of the first communication channel deteriorates during transmission of the packet using the first communication channel, the wireless communication apparatus reads, from the transmission buffer, the packet of which transmission on the first communication channel is not completed, and controls transmission of the read packet by using the second communication channel. The present technology can be applied to a wireless communication system.