Reduced-Duration Block Acknowledgement for Wireless Resource Efficiency
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Solution Overview
Problem
In wireless communication systems, the use of block acknowledgement mechanisms can lead to radio resource waste due to the fixed duration set for receiving block acknowledgements, which is not optimized based on the actual length of the acknowledgement bitmap, leading to inefficiencies in resource utilization.
Innovation Solution
The method involves negotiating a buffer size with a second device, providing data with a duration field, and receiving a block acknowledgement with a reduced duration that is less than the standard duration, thereby optimizing the acknowledgement process to minimize resource waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed duration is set for receiving block acknowledgements, then the acknowledgement process is simplified and reliable, but radio resource waste increases due to unused time slots
Solution Approach 1:
The patent applies dynamics by making the duration field value variable rather than fixed. The transmitting device dynamically adjusts the duration field in the data frame based on the actual number of data units being transmitted, allowing the acknowledgement reception window to match the precise time needed. This resolves the contradiction by maintaining reliability through proper timing while eliminating radio resource waste from excessive fixed duration allocations.
Solution Approach 2:
The patent changes the parameter of duration from a fixed standard value to a variable value calculated based on transmission conditions. By computing the duration field as a function of the number of data units and transmission rate, the system adapts the acknowledgement timing parameter to actual needs, reducing wasted radio resources while ensuring sufficient time for reliable acknowledgement reception.
2Device complexity
If a fixed duration is used for block acknowledgement, then device complexity is reduced, but transmission efficiency decreases due to unused time slots
Solution Approach 1:
The patent implements dynamics by calculating and setting the duration field based on actual transmission parameters rather than using a static fixed value. The transmitting device determines the appropriate duration by considering the number of data units and transmission characteristics, then sets this dynamic value in the data frame. This increases transmission efficiency by eliminating idle time slots while maintaining manageable device complexity through automated calculation.
Solution Approach 2:
The patent applies preliminary action by pre-calculating the optimal duration value before transmission based on the number of data units and transmission conditions. The transmitting device computes the required acknowledgement time and sets the duration field in advance, allowing the receiving device to prepare accordingly. This preliminary setup optimizes transmission efficiency without adding complex real-time adjustments during operation.
3Reliability
If the duration field is set to maximum value, then all block acknowledgements are reliably received, but radio resource utilization deteriorates
Solution Approach 1:
The patent changes the duration parameter from a maximum fixed value to a calculated value based on actual transmission needs. The transmitting device determines the precise duration required for the receiving device to process and acknowledge the specific number of data units being transmitted. This parameter adjustment ensures reliable acknowledgement reception while optimizing radio resource utilization by eliminating excess allocation.
Solution Approach 2:
The patent applies partial action by allocating only the necessary portion of time resources for block acknowledgement rather than the full maximum duration. The duration field is set to match the actual processing time needed for the specific data transmission, providing sufficient time for reliable acknowledgement while avoiding the excessive resource consumption that would result from always using maximum duration values.
Data Source
AI summary
The present disclosure provides a wireless communication method. The wireless communication method includes a first device used to negotiate a buffer size with a second device, provide data including a duration field to the second device, and receive a first block acknowledgement from the second device. The first block acknowledgement may include a first block acknowledgement bitmap. The duration field included in the data from the first device may include an indication of a duration associated with the first block acknowledgment that is less than an upper bound duration associated with a second block acknowledgement that includes a second block acknowledgement bitmap with a maximum length.