101. Frame-based mapping mechanism for energy-efficient MPEG-4 video transmission over IEEE 802.11e networks with better quality of delivery
- Author
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Chong-Yi Yang, Jiann-Liang Chen, Jaime Lloret, Kayhan Zrar Ghafoor, and Chih-Heng Ke
- Subjects
IEEE 802 ,Computer Networks and Communications ,Computer science ,802.11e ,Real-time computing ,MPEG-4 ,Wireless ,Video transmission quality ,business.industry ,Network packet ,Quality of service ,Frame (networking) ,Local area network ,computer.file_format ,INGENIERIA TELEMATICA ,Computer Science Applications ,Transmission (telecommunications) ,Hardware and Architecture ,IEEE 802.11e-2005 ,business ,computer ,Energy efficient ,Wireless local area networks ,Computer network ,Communication channel - Abstract
Recent developments in hardware, software and communication technologies have resulted in increasing interest in the use of wireless local area networks (WLANs). Mobile devices with embedded WLAN functionality are becoming increasingly popular. Such devices must be designed to support applications that require high quality of service (QoS) and have favorable to maximize battery capacity. The resources of queues in IEEE 802.11e networks may be wasted by the transmission of information that is useless to the receiver. This work develops a frame-based mapping mechanism (FBM) that exploits different methods to process I/P/B (Intra/Predictive/Bipredictive) video frame packets. FBM refers to the dropping of arriving packets if the preceding packets in the same video frame have been dropped. When fragmented packets of a single frame are allocated to different access categories (AC) queues, out-of order delivery may occur. Hence, FBM tries to treat all fragmented packets of each video frame equally and allocates them to the same AC queue if possible. The simulation results demonstrate that transmission by the FBM is more efficient than that by other mechanisms, such as EDCA (Enhanced Distributed Channel Access), static mapping and adaptive mapping, suggesting that the energy of a device is not wasted in the transmission of useless video data in WLANs. (C) 2015 Elsevier Ltd. All rights reserved., Foundation item: The National Project of Taiwan (No.: MOST 103-2221-E507-001). Authors are grateful to Ministry of Science and Technology Grant no. (MOST 103-2221-E507-001), Government of Taiwan for financial support to carry out this work.
- Published
- 2015