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In a wireless domain where a mobile user accesses heterogeneous wireless technologies with multiple interfaces, a multi-path scheduling algorithm can benefit mobile users' experience by aggregating different network bandwidth together. However, existing literature actually shows that for TCP flows, it may not be the case. To better exploit multi-path scheduling for TCP connections, this paper presents...
Energy consumption is a concern with mobile de-vices nowadays. Network interfaces are among the most power hungry components in these devices. In this paper, we describe the design and implementation of a client-centric protocol for energy efficiency. Inspired by earlier work, our protocol works by exploiting the TCP flow-control mechanism to shape incoming traffic into bursts in order to utilize...
Tremendous efforts have been conferred towards the congestion control concern in mobile wireless networks while dealing with maximizing both throughput and fair bandwidth allocation. Unfortunately, this is made limited by the variable and unpredictable behaviour of such networks. In this paper we propose a new congestion control mechanism for multimedia traffic in mobile wireless networks. Our proposed...
We propose a routing mechanism with distributed call admission control (CAC) algorithms for mobile ad hoc networks (MANET) based on IEEE 802.11e EDCA MAC protocol. A new flow can be admitted by the network only if it can find a path to sustain its traffic. Bloom filter is used here to detect the flows via each node, and the CAC routing decisions are made according to the number of flows of each node...
One of the critical issues in multimedia applications is the support of quality of service (QoS) at an acceptable level. IEEE802.11e has proposed a simple scheduler but it proves unable to support QoS in variable bit rate traffic. This paper presents a novel scheduling algorithm named adaptive transmission opportunity (ATX) to support variable bit rate in multimedia services. In the proposed scheduling...
In this paper we introduce a prioritization scheme for enhancing the performance of the authentication process in vehicular networks using dedicated short range communications (DSRC). We consider the authentication as a service that should be required by each user in order to gain access to the network and to the offered services. Instead of using a unique channel to transmit the messages of the authentication...
In wireless networks, providing a fair bandwidth allocation without too much reducing the system throughput is very challenging. Path loss attenuations induce unequal spectral efficiencies and in terms unequal throughtput for mobiles with different geographical positions. In the litterature, Proportional Fair (PF) is acknowledged as the reference scheduler in multiuser OFDM wireless networks. Opportunistically...
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