Multi-Link Block Acknowledgement for WLAN Bandwidth Management
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Solution Overview
Problem
Wireless local area networks (WLANs) face challenges in efficiently managing bandwidth and response times due to multiple devices sharing resources, with limitations from communication protocols and hardware bandwidth, particularly when operating with both new and legacy protocols.
Innovation Solution
The proposed solution involves a radio architecture that integrates WLAN and Bluetooth functionalities, using a multi-link communication approach with block acknowledgement and fragmentation techniques, enabling efficient coexistence and operation across various protocols and hardware configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple devices share the same wireless resources, then network coverage and device connectivity are improved, but bandwidth availability and response times deteriorate
Solution Approach 1:
The patent divides the wireless communication system into multiple independent links (first link and second link) operating on different frequencies or channels. Each link can independently transmit data, effectively segmenting the shared resource into dedicated pathways that reduce contention and improve bandwidth availability while maintaining connectivity for multiple devices.
Solution Approach 2:
The patent introduces an additional dimension to wireless communication by establishing multiple links between logical entities, transitioning from single-link to multi-link operation. This dimensional expansion allows simultaneous data transmission through different communication paths, increasing overall bandwidth capacity without compromising device connectivity.
2Productivity
If block acknowledgement is implemented across multiple links, then throughput and resource utilization are improved, but protocol complexity and implementation difficulty increase
Solution Approach 1:
The patent creates a universal block acknowledgement mechanism that operates across multiple independent links using a unified protocol framework. The same block acknowledgement principles apply whether transmitting over one link or multiple links, reducing implementation complexity despite the multi-link environment. The protocol handles multiple links through standardized procedures rather than requiring link-specific implementations.
Solution Approach 2:
The patent merges the acknowledgement functions of multiple separate links into a coordinated block acknowledgement system. Instead of managing independent acknowledgements for each link, the system combines them into a unified block acknowledgement process that improves throughput by efficiently managing resource allocation across all links simultaneously, reducing overall protocol complexity.
3Adaptability or versatility
If fragmentation techniques are used for legacy protocol compatibility, then interoperability is improved, but processing overhead and transmission time increase
Solution Approach 1:
The patent implements dynamic fragmentation where data units are fragmented or aggregated based on real-time conditions such as link quality, protocol requirements, and data size. This dynamic approach allows the system to optimize transmission by using larger unfragmented units when possible (reducing overhead) while automatically fragmenting when legacy protocol compatibility is required, thereby minimizing transmission time while maintaining interoperability.
Solution Approach 2:
The patent changes key transmission parameters including fragment size, aggregation level, and protocol mode based on the specific communication context. By dynamically adjusting these parameters, the system can switch between highly efficient bulk transmission and legacy-compatible fragmented transmission, reducing overall transmission time while ensuring compatibility with both modern and legacy devices.
Data Source
AI summary
Embodiments of a station (STA) and method of communication are generally described herein. The STA may be included in a first plurality of STAs affiliated with a first multi-link logical entity (MLLE). A plurality of links may be established between the first MLLE and a second MLLE, wherein the second MLLE may be affiliated with a second plurality of STAs. The STA may receive a first subset of a sequence of MAC protocol data units (MPDUs). A second subset of the sequence of MPDUs may be transmitted by another STA of the first plurality of STAs. The STA may transmit a block acknowledgement (BA) frame that includes: a number of BA bitmaps, configurable to values greater than or equal to one; and BA control information for each of the BA bitmaps.