A Novel Scheduler Design for Wireless Video over 802.11aa Networks Using Priority Weighting and Dropping

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Provided by: Science & Engineering Research Support soCiety (SERSC)
Topic: Enterprise Software
Format: PDF
In the newly released 802.11aa-2012 protocol, Intra Access Category Prioritization (IACP) and Drop Eligibility Indicator (DEI) enable Stream Classification Service (SCS) with graceful degradation for robust audio and video streaming. IACP introduces the need for scheduling between the primary and alternative AC queues (AC-VI and AAC-VI) for differentiating real-time and non-real-time video streams. This paper proposes a novel cross-layer design for the scheduler between AC-VI and AAC-VI, which combines a real-time video importance scheme in the application layer and a Priority Weighting and Dropping algorithm (PWD) in the MAC layer, where priority weighting is applied only to AC-VI and priority dropping to both AC-VI and AAC-VI.
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