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Wireless local area networks (WLANs) are now being used in places where access point (AP) power saving would be very desirable. Although this is not currently possible, modifications to the IEEE 802.11 protocol have recently been proposed which would permit this functionality. A difficult problem that arises is to maintain good client power saving when AP power saving is introduced. This is especially...
The burstiness of multimedia traffic and the long propagation delays in Geosynchronous (GEO) satellite systems call for an efficient Medium Access Control (MAC) protocol and an equally efficient Call Admission Control (CAC) scheme, in order to provide acceptable Quality of Service (QoS) to multimedia users. This paper proposes a fair and dynamic CAC and MAC framework, named Fair Predictive Resource...
We have recently introduced in the literature a new access control protocol for next generation wireless cellular networks, which showed superior performance in comparison to other (TDMA and WCDMA-based) protocols when integrating various types of multimedia traffic. In this Extended Abstract, we show that the use of stack protocols to resolve contention among contending multimedia terminals is not...
We have recently introduced in the literature MI-MAC (Multimedia Integration Multiple Access Control), a new access control protocol for next generation wireless cellular networks which showed superior performance in comparison to other (TDMA and WCDMA-based) protocols when integrating various types of multimedia traffic. In this work, which to the best of our knowledge is one of the first in the...
IEEE 802.11 is now being used in many situations where access point (AP) power saving would be highly desirable. Unfortunately, this is not possible since the existing standard requires that APs remain active at all times. In this paper, we present a framework for a power saving quality-of-service (QoS) enabled access point (PSQAP), intended for use in low power infrastructure applications. The proposed...
The provision of acceptable Quality-of-Service (QoS) for integrated multimedia traffic over a geosynchronous earth orbit (GEO) satellite network demands the existence of a well-designed Medium Access Control (MAC) protocol. This paper proposes a new dynamic satellite bandwidth allocation technique (Predictive Resource Reservation Access PRRA) which is based on accurate videoconference traffic prediction...
In this paper we explore, via an extensive simulation study, the performance of a medium access control (MAC) protocol when integrating high-quality video, Web and MP3 data packet traffic over a wireless picocellular system of very high capacity, with errors and capture. Mobile terminals are considered to be high performance devices with extended storage capabilities which can act like cache memories...
The provision of acceptable Quality-of-Service (QoS) for multimedia traffic over a geosynchronous earth orbit (GEO) satellite network demands the existence of a well-designed Medium Access Control (MAC) protocol. This paper proposes a new dynamic satellite bandwidth allocation technique which is based on accurate MPEG-4 videoconference traffic prediction. The use of the prediction in our protocol...
Powerline communications (PLC) are currently being considered as an alternative for high-speed data communications and Internet access. With multiple outlets in almost every room, power lines are already the most pervasive network in the home or small office. This work presents a new medium access control (MAC) protocol for the "last mile" access PLC networks. Via an extensive simulation...
In this paper we explore, via an extensive simulation study, the performance of a Medium Access Control (MAC) protocol when integrating video, WAP and MP3 data packet traffic over a wireless picocellular system of very high capacity, with errors. Mobile terminals are considered to be high performance devices with extended storage capabilities which can act like cache memories streaming multimedia...
Powerline Communications (PLC) are currently being considered as an alternative for high-speed data communications and Internet access. With multiple outlets in almost every room, power lines are already the most pervasive network in the home or small office. This work presents a new Medium Access Control (MAC) protocol for the "last mile" access PLC networks. Via an extensive simulation...
The provision of acceptable quality-of-service (QoS) for integrated multimedia traffic over a geosynchronous earth orbit (GEO) satellite network demands the existence of a well-designed medium access control (MAC) protocol. This paper proposes a new dynamic satellite bandwidth allocation technique (predictive resource reservation access, PRRA) which is based on accurate videoconference traffic prediction...
In recent work [1], we have introduced MI-MAC (Multimedia Integration Multiple Access Control Protocol), which was shown to achieve superior performance in comparison to other protocols of the literature when integrating various types of multimedia traffic. In this paper we enhance the scheduling scheme of MI-MAC by adding three important parameters into its study, namely handoff traffic, per user...
Powerline communications (PLC) are currently being considered as an alternative for high-speed data communications and Internet access. With multiple outlets in almost every room, power lines are already the most pervasive network in the home or small office. This work presents a new medium access control (MAC) protocol for the "last mile" access PLC networks. Via an extensive simulation...
An efficient Medium Access Control (MAC) protocol is critical for the performance of a Wireless Sensor Network (WSN), especially in terms of energy consumption. In this short paper which presents our work-in-progress we discuss the efficiency of S-MAC, a well-known MAC protocol for WSNs, and propose an improvement on the protocol. Via an extensive simulation study considering the cases of both a simple...
The provision of acceptable Quality-of-Service (QoS) for multimedia traffic over a geosynchronous earth orbit (GEO) satellite network demands the existence of a well-designed Medium Access Control (MAC) protocol. In this short paper which presents our work-in-progress, we propose a new dynamic satellite bandwidth allocation technique which is based on accurate videoconference traffic prediction, and...
The provision of acceptable quality-of-service (QoS) for multimedia traffic over a geosynchronous Earth orbit (GEO) satellite network demands the existence of a well-designed medium access control (MAC) protocol. This paper proposes a new dynamic satellite bandwidth allocation technique which is based on accurate videoconference traffic prediction, which is shown via a simulation study to provide...
An efficient medium access control (MAC) protocol is critical for the performance of a wireless sensor network (WSN), especially in terms of energy consumption. In this work we discuss the efficiency of S-MAC, a well-known MAC protocol for WSNs, and propose an improvement on the protocol. Via an extensive simulation study considering the cases of both simple and complicated topologies, the enhanced...
A new scheme, combining medium access control (MAC) with traffic policing for next generation wireless networks, is proposed in this work, in order to provide a flexible solution for the integration of multimedia traffic over noisy high capacity links. The most attractive features of our scheme are: a) its flexibility, which allows it to adapt easily to wireless channel of various capacities, and...
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