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- Title
An adaptive cross-layer mapping algorithm for MPEG-4 video transmission over IEEE 802.11e WLAN.
- Authors
Lin, C.-H.; Shieh, C.-K.; Ke, C.-H.; Chilamkurti, N.; Zeadally, S.
- Abstract
This paper proposes an adaptive cross-layer mapping algorithm to improve the transmission quality of MPEG-4 video stream over an IEEE 802.11e wireless network. Instead of classifying video data to a specific access category in an 802.11e network, we propose an algorithm that dynamically maps MPEG-4 video packets to appropriate access categories according to both the significance of the video data and the network traffic load. Our proposed cross-layer architecture passes information about the significance of video packets from the application layer to the media access control layer. The queue length of a specific access category is used to deduce the network traffic load. We conducted a performance evaluation of our proposed cross-layer approach under both light and heavily loaded network conditions. Our simulation results demonstrate: (a) superior performance of our proposed approach (under both light and heavy loads) over 802.11e (Enhanced Distributed Channel Access (EDCA) and static mapping schemes, (b) not only guarantees prioritized transmission of essential video data but also provides efficient queue length utilization.
- Subjects
MPEG (Video coding standard); WIRELESS communications; STREAMING video &; television; DATA packeting; SIMULATION methods &; models
- Publication
Telecommunication Systems, 2009, Vol 42, Issue 3/4, p223
- ISSN
1018-4864
- Publication type
Article
- DOI
10.1007/s11235-009-9182-9