Multi-Band Block Acknowledgement for Unified Wi-Fi Traffic Streams
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Solution Overview
Problem
Current IEEE 802.11 communication devices are limited to single-band operations, which hinder the full realization of throughput gains from multi-band aggregation, particularly in high-definition video streaming, due to the lack of efficient multi-band Traffic Stream (TS) and Block Acknowledgement (BA) mechanisms.
Innovation Solution
Implementing a multi-band communication device with multiple transceivers and Media Access Control (MAC) circuitry that facilitates simultaneous transmission and acknowledgement across multiple frequency bands, using unified MAC layers for TS and BA setup across bands, enabling a single frame exchange for multi-band operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If single-band operation is used in current IEEE 802.11 devices, then device complexity is reduced, but data throughput is limited and cannot achieve multi-fold increase from multi-band aggregation
Solution Approach 1:
The patent merges multiple band-specific Block Ack mechanisms into a unified multi-band Block Ack mechanism. The MAC circuitry consolidates block acknowledgements for signal frames received on multiple frequency bands (2.4 GHz, 5 GHz, and 6 GHz) into a single multi-band block acknowledgement frame, eliminating the need for separate BA exchanges on each band and reducing overall system complexity while enabling multi-band aggregation throughput gains
Solution Approach 2:
The patent implements a universal multi-band block acknowledgement frame that can acknowledge signal frames across multiple frequency bands simultaneously. This single frame structure serves multiple functions by replacing band-specific BA frames, allowing the system to achieve multi-fold throughput increase from multi-band aggregation without proportionally increasing device complexity
2Reliability
If separate block acknowledgements are used for each frequency band, then band-specific reliability is maintained, but communication overhead and processing time increase
Solution Approach 1:
The patent combines multiple band-specific Block Acknowledgement frames into a single multi-band Block Acknowledgement frame. The MAC circuitry receives signal frames on different frequency bands and generates one consolidated BA frame that acknowledges all received frames across all bands, reducing the number of separate BA exchanges and minimizing processing time while maintaining reliability through comprehensive acknowledgment
3Adaptability or versatility
If multiple separate traffic stream setups are performed for each band, then band-specific traffic control is achieved, but setup complexity and signaling overhead increase
Solution Approach 1:
The patent implements a universal multi-band Traffic Stream setup mechanism where a single ADDTS Request/Response exchange establishes traffic stream parameters applicable across multiple frequency bands. The MAC circuitry uses this unified TS setup to control traffic on 2.4 GHz, 5 GHz, and 6 GHz bands simultaneously, reducing signaling overhead and setup complexity while maintaining the ability to control band-specific traffic characteristics through the unified TS parameters
Data Source
AI summary
Communication devices and methods for multi-band traffic streams are provided. One exemplary embodiment provides a multi-band communication device which includes at least a plurality of transceivers and Media Access Control (MAC) circuitry. In operation, the transceivers each transmit signal frames on different ones of a plurality of frequency bands. The MAC circuitry is coupled to the transceivers and, in operation, receives a multi-band block acknowledgement frame on one of the plurality of frequency bands acknowledging the signal frames transmitted on the plurality of frequency bands. Another exemplary embodiment provides MAC circuitry which in operation generates and transmits a multi-band block acknowledgement frame on one of the plurality of frequency bands acknowledging the signal frames received on the plurality of frequency bands.