Block ACK Transmission Allocation Scheduling for WLAN Resource Efficiency
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Solution Overview
Problem
Current wireless communication systems, particularly those employing MIMO technology, face challenges in maximizing data throughput and resource efficiency, as they require additional bandwidth or transmit power to support multiple user terminals, and existing acknowledgment scheduling methods are inefficient, leading to overhead and inter-frame spacing issues.
Innovation Solution
The implementation of a method and apparatus for scheduled Block Acknowledgment in wireless communication networks using TDMA, OFDMA, and SDMA, which allows for coordinated transmission and reception of acknowledgments through Block ACK Transmission Allocation (BATA) frames, optimizing resource allocation and reducing overhead by scheduling transmission times and channel designations for each receiving node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional acknowledgment scheduling methods are used, then simplicity is maintained, but data throughput is limited and resource efficiency deteriorates due to overhead and inter-frame spacing
Solution Approach 1:
The patent merges multiple acknowledgment requests into a single Block ACK Transmission Allocation (BATA) frame that schedules multiple block acknowledgments simultaneously. This combines what would traditionally be separate acknowledgment exchanges into one coordinated transmission, eliminating repeated inter-frame spacing requirements and reducing overall overhead while increasing throughput.
Solution Approach 2:
The access point transmits BATA frames in advance that pre-schedule the timing and resources for multiple block acknowledgments before they are actually needed. This preliminary scheduling allows receiving nodes to prepare acknowledgment transmissions at optimized times, eliminating the need for separate acknowledgment requests and reducing real-time processing overhead.
2Productivity
If additional bandwidth is allocated for multiple user terminals, then resource efficiency improves, but transmit power requirements increase
Solution Approach 1:
The patent introduces a time-scheduling dimension to resource allocation by assigning specific time slots and frequency resources to different block acknowledgments within the BATA frame structure. This temporal dimension allows multiple nodes to transmit acknowledgments simultaneously without interfering with each other, improving resource efficiency without requiring proportional increases in transmit power for each individual acknowledgment.
3Ease of operation
If separate acknowledgment requests are used for each node, then simplicity is maintained, but device complexity increases due to multiple transmission cycles
Solution Approach 1:
The BATA frame serves multiple functions simultaneously: it acts as a scheduling mechanism, a resource allocation map, and a coordination signal for multiple block acknowledgments. This universal structure replaces what would traditionally require multiple separate request-response cycles, reducing the operational complexity at each individual node while maintaining overall system simplicity through a standardized multi-functional frame format.
Data Source
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AI summary
Disclosed are methods and apparatuses for communication by which a physical layer packet is generated for transmission to a plurality of nodes, or by which a physical layer packet is received by a plurality of nodes, wherein a resource allocation for each of the plurality of nodes to send an acknowledgement to an apparatus or a transmitting node is included in the physical layer packet.