Wireless Frame Aggregation Throughput Control via Dynamic Rate Adjustment
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Solution Overview
Problem
Conventional wireless communication techniques struggle to simultaneously control frame length and transmission rate effectively during frame aggregation, leading to suboptimal throughput due to the inability to accurately determine whether to adjust frame length or transmission rate based on the wireless channel state, resulting in decreased performance.
Innovation Solution
A wireless communication apparatus that includes a frame aggregation unit, a transmission unit, a memory for storing threshold frame lengths, and a control unit to select and adjust transmission rates and frame lengths based on throughput characteristics, ensuring optimal frame length and transmission rate settings by comparing current frame lengths with threshold values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If frame length is increased to improve communication efficiency, then throughput is improved, but error rate increases due to channel state variation within the frame
Solution Approach 1:
The patent applies dynamics by making the frame length adjustable rather than fixed. The frame length is dynamically controlled based on the wireless channel state - when the channel state is good, longer frames are used to improve throughput; when the channel state deteriorates, shorter frames are used to reduce error rates. This dynamic adaptation resolves the contradiction between maximizing throughput and minimizing errors.
Solution Approach 2:
The patent changes the parameter of frame length based on channel conditions. By monitoring the wireless channel state and adjusting the frame length parameter accordingly, the system optimizes the balance between throughput and error rate. This parameter change approach allows the system to adapt to varying channel conditions and resolve the fundamental trade-off between these two performance metrics.
2Productivity
If transmission rate is increased to improve throughput, then communication efficiency is improved, but error rate increases due to channel estimation inaccuracies
Solution Approach 1:
The patent applies dynamics by making the transmission rate adjustable based on channel conditions. The system dynamically selects transmission rates from multiple available rates according to the current wireless channel state. When channel conditions are favorable, higher transmission rates are used to maximize throughput; when conditions deteriorate, lower rates are selected to maintain reliability, thus resolving the contradiction between throughput and error rate.
Solution Approach 2:
The patent changes the transmission rate parameter based on channel quality assessment. By monitoring channel state and adjusting the transmission rate parameter to match current conditions, the system optimizes the trade-off between achieving high throughput and maintaining low error rates. This parameter adaptation resolves the fundamental conflict between these two performance objectives.
3Productivity
If frame aggregation is performed to reduce overhead, then communication efficiency is improved, but control complexity increases when simultaneously managing frame length and transmission rate
Solution Approach 1:
The patent applies self-service by implementing an automatic control mechanism that monitors wireless channel state and autonomously adjusts frame length and transmission rate parameters. The system uses pre-stored threshold values to make control decisions without requiring complex real-time calculations or external intervention. This self-service approach simplifies the control complexity while maintaining optimal communication efficiency through frame aggregation.
Solution Approach 2:
The patent manages control complexity by changing parameters based on pre-defined thresholds rather than complex algorithms. The control unit compares channel state measurements against stored threshold values and adjusts frame length and transmission rate accordingly. This threshold-based parameter change approach reduces control complexity while still enabling effective frame aggregation and optimization of communication efficiency.
Data Source
AI summary
A wireless communication apparatus generates aggregated frame including frames and having frame length, transmits aggregated frame at transmission rate of transmission rates, stores, in memory, for each of transmission rates, threshold frame length defined between first frame length range and second frame length range, if frame length is within second frame length range not more than threshold frame length, throughput increase rate not less than predetermined threshold value being obtained by increasing frame length, selects, by comparing threshold frame length at transmission rate with frame length, at least one of (a) another transmission rate of transmission rates and (b) new frame length of aggregated frame, sets transmission rate to selected another transmission rate if another transmission rate is selected, and sets frame length to new frame length if new frame length is selected.