Multi-Link PPDU Dispatching for BA Window Air Wastage
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Solution Overview
Problem
Existing wireless communications systems face reduced performance due to air wastage phenomena when certain conditions are met, such as high traffic loading, high PHY rate, and failed decoding of small SN MAC protocol data units, leading to inefficient use of available sequence numbers.
Innovation Solution
Implementing adaptive multi-link aggregation dispatching control through a dispatching management procedure that dynamically adjusts the number of MPDUs with associated sequence numbers for transmission across multiple links, using a dispatching decision circuit, window calculation, and link ratio calculation to optimize data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple sets of partial data corresponding to multiple acknowledgment/ack windows are sent through multiple links, then data transmission capacity is improved, but air wastage occurs leading to reduced performance
Solution Approach 1:
The patent implements dynamic dispatching management that adapts the number of MPDUs transmitted in each PPDU based on real-time channel conditions and link status. The system dynamically adjusts transmission parameters including the number of sequence numbers to transmit, MPDU aggregation size, and link selection, transforming the static multi-link transmission into a dynamic adaptive system that optimizes throughput while minimizing air wastage.
Solution Approach 2:
The patent changes key transmission parameters including the number of MPDUs per PPDU, sequence number range, and aggregation size based on dispatching decisions. By adjusting these parameters dynamically according to link conditions, the system resolves the contradiction between maximizing data transmission capacity and minimizing air wastage, achieving optimal performance under varying network conditions.
2Productivity
If the number of MPDUs corresponding to a BA window is increased in each PPDU, then transmission efficiency is improved, but decoding failure risk increases for small SN MAC protocol data units
Solution Approach 1:
The patent applies partial action by transmitting only the necessary number of MPDUs with appropriate sequence numbers in each PPDU, rather than maximizing aggregation size. The dispatching management determines optimal MPDU counts that achieve sufficient transmission efficiency while maintaining decoding reliability, avoiding excessive aggregation that would increase failure risk for small SN units.
Solution Approach 2:
The system uses feedback from block acknowledgment windows and link status to adjust the number of MPDUs transmitted. By monitoring acknowledgment patterns and decoding performance, the dispatching management adapts aggregation size and sequence number selection, resolving the contradiction between transmission efficiency and decoding reliability through continuous feedback-driven optimization.
3Productivity
If adaptive dispatching control is implemented to reduce air wastage, then performance is enhanced, but system complexity increases due to dispatching management procedure
Solution Approach 1:
The patent segments the complex dispatching management into modular functional components including link status monitoring, PPDU generation control, sequence number management, and acknowledgment tracking. This segmentation reduces implementation complexity while maintaining the adaptive performance benefits, as each module can be independently optimized and managed.
Data Source
AI summary
A method for performing adaptive multi-link aggregation dispatching control in multi-link operation architecture and associated apparatus are provided. The method applicable to a wireless transceiver device within a wireless communications system may include: utilizing the wireless transceiver device to communicate with another device within the wireless communications system to set up multiple links respectively corresponding to multiple predetermined radio frequency bands, to allow the wireless transceiver device and the other device to perform data transmission through the multiple links; and performing a dispatching management procedure to selectively perform dispatching regarding a first link among the multiple links, for transmitting a first physical layer (PHY) protocol data unit (PPDU) corresponding to a block acknowledgment (BA) window through the first link, wherein the dispatching regarding the first link includes temporarily reducing a number of medium access control (MAC) protocol data units (MPDUs) corresponding to the BA window in the first PPDU.