Transmission Scheduling for Multimedia Traffic over Wireless Cellular Networks with Capture
ABSTRACT In this paper, we design and study the performance of a multiple access control (MAC) scheme for the multiplexing and the integrated delivery of voice, mobile messaging IP and H.264 videoconference traffic over a high-speed next-generation cellular TDMA channel with errors and capture. To the best of our knowledge, this is one of the first papers in the literature investigating the integration of H.264 video traffic with other types of traffic over wireless networks. Our results show that the proposed scheme achieves high throughput results while preserving the strict quality of service (QoS) requirements of each traffic type and outperforms an efficient scheme previously proposed in the literature.
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ABSTRACT: This paper presents a survey on Medium Access Control (MAC) protocols for multimedia traffic in wireless networks. A basic overview of MAC protocol concepts is presented and a framework is developed on which to base qualitative comparisons. The MAC protocols covered in this paper include third generation TDMA and CDMA schemes intended for use in a single hop wireless system. The operation of each protocol is explained and its advantages and disadvantages are presented. Finally, a qualitative comparative outline of the discussed protocols is provided, based on multimedia traffic requirements. Key Words: Medium Access Control Protocols, Multimedia, Wireless Networks, TDMA, CDMA The work of IFA and JM is supported by Department of Defense under grant number MDA 904-97-C-1105-0003. y The work of LC is supported by the Comisi'on Interministerial de Ciencia y Tecnolog ' ia under Grant (TIC 98-0263), Spain, and the Comunitat Aut'onoma de les Illes Balears, Spain. 1 1 Introduction One o...IEEE Network 09/1999; · 2.85 Impact Factor
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ABSTRACT: We present the results of a simulation study that explores the performance of four stack based reservation random access (RRA) protocols for transmitting voice packets over a common radio broadcast channel in a microcellular radio environment. These algorithms provide a mechanism that enables all of the terminals within a microcell to differentiate between available voice and available data time slots; therefore, voice-data integration can be achieved by eliminating competition between voice and data terminals for available slots. We consider voice transmissions over an ideal channel, over a channel subject to memoryless errors, and over a channel with capture. Our results show that by varying the size of the stack (2 cell or 3 cell) and/or the feedback (binary versus ternary) we can make a trade off between voice and data traffic performanceCommunications, 1995. ICC '95 Seattle, 'Gateway to Globalization', 1995 IEEE International Conference on; 07/1995
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ABSTRACT: The MAC protocol, known as MASCARA (Mobile Access Scheme based on Contention And Reservation for ATM), is an infrastructure-based, adaptive TDMA scheme, which combines reservation- and contention-based access methods to provide multiple access efficiency and Quality-of-Service (QoS) guarantees to wireless ATM terminal connections that share a common radio channel. Radio channel sharing is performed by the PRADOS (Prioritized Regulated Allocation Delay Oriented Scheduling) algorithm. In this paper we assess the capability of PRADOS to guarantee to voice and data traffic types the QoS they need. The analysis leads to the conclusion that PRADOS cannot avoid the interference between the various types of traffic. A criterion to alleviate this drawback is also outlined at the end of the paper.01/1999