MAC Protocol Data Unit Segmentation for Wireless Throughput
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Solution Overview
Problem
Wireless communication systems face inefficiencies in utilizing high throughput capabilities due to inadequate resource management and varying data transfer requirements, leading to reduced system capacity and inefficient operation.
Innovation Solution
A protocol stack comprising an adaptation layer, data link control layer, and physical layer, utilizing physical layer feedback for segmentation and multicast mapping, and incorporating a MAC sublayer Protocol Data Unit to efficiently manage and transmit data from multiple flows across disparate physical links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a wireless communication system supports high data rates, then throughput capability is improved, but system capacity is reduced due to inadequate resource management
Solution Approach 1:
The patent segments data flows into multiple categories based on latency and throughput requirements. Different flow types (e.g., real-time vs. non-real-time) are handled separately through distinct queue management and scheduling mechanisms, allowing the system to optimize resource allocation for high data rates while maintaining overall system capacity through targeted resource management.
Solution Approach 2:
The patent implements dynamic resource management where the MAC layer adapts its behavior based on current system conditions and flow requirements. The scheduler dynamically adjusts resource allocation, queue priorities, and transmission parameters to balance between supporting high data rates and maintaining system capacity under varying load conditions.
2Productivity
If resource management is inadequate, then system capacity is reduced, but implementing comprehensive resource management increases protocol complexity
Solution Approach 1:
The patent extracts resource management functions to a dedicated MAC layer component that operates independently from higher protocol layers. By isolating resource management logic in the MAC layer, the system achieves comprehensive resource control without significantly increasing overall protocol complexity, as the extracted module can be implemented using existing MAC framework components.
Solution Approach 2:
The patent designs a universal resource management framework that handles multiple flow types and service categories through a single integrated scheduler. This multi-functional approach allows the system to manage diverse data streams (real-time, non-real-time, best-effort) using common resource allocation mechanisms, thereby improving system capacity without proportionally increasing complexity.
3Adaptability or versatility
If the system supports varying data transfer requirements, then adaptability is improved, but media access control efficiency deteriorates
Solution Approach 1:
The patent applies local quality optimization by tailoring media access control parameters to specific flow characteristics. Different quality parameters (e.g., priority, buffer size, transmission timing) are assigned to different flow types based on their specific latency and throughput requirements, allowing the system to maintain high adaptability while optimizing MAC efficiency for each flow category.
Solution Approach 2:
The patent ensures continuous and efficient media access by maintaining dedicated transmission opportunities for different flow types. The scheduler continuously allocates resources to active flows without idle gaps, ensuring that adaptability to varying data transfer requirements does not interrupt the continuous operation of the media access control mechanism.
Data Source
AI summary
Embodiments addressing MAC processing for efficient use of high throughput systems are disclosed. In one aspect, a protocol stack is disclosed comprising one or more of the following: an adaptation layer, a data link control layer, a physical layer, and a layer manager. In another aspect, physical layer feedback is used for adaptation layer processing. In one embodiment, physical layer feedback is used for segmentation. In another embodiment, physical layer feedback is used for multicast mapping onto one or more unicast channels. In another aspect, a data unit for transmission from a first station to a second station comprises zero or more complete sub-data units, zero or one partial sub-data units from a prior transmission, and zero or one partial sub-data units to fill the data unit. In one embodiment, a pointer may be used to indicate the location of any complete sub-data units.