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Abstract-HTTP (Hyper TextTransfer Protocol) and TCP (Transmission Control Protocol) are usually used to retrieve objects in the Internet. Stream Control Transmission Protocol (SCTP) has attractive multistreaming feature, which allows for independent delivery among streams, thus can avoid the head-ofline blocking experienced by TCP and reduce the mean response time of users. We present an analytical model and algorithm to estimate the mean response time for HTTP over SCTP and compare with that of HTTP over TCP in the wireless environment. We validate the accuracy of our model using experiments. It is shown that mean response time for HTTP over SCTP is less than that for HTTP over TCP by 20% on average.

Abstract-SIGMA is an IP diversity-based mobility management scheme that aims to reduce handoff latency and packet loss of Mobile IP. In this paper, we propose a power-aware version of SIGMA (called PEARS) which reduces power consumption by intelligently switching off network devices, and improves handoff performance by reducing the number of unnecessary handoffs. The effectiveness of PEARS and SIGMA have been evaluated on a Linux-based experimental testbed. PEARS has been found to require considerably less power than SIGMA. The schemes used in PEARS can also be used to reduce power consumption of multihomed mobile nodes and routers.

With the proliferation of wireless data networks, there is an increasing interest in carrying multimedia over wireless networks using portable devices such as laptops and personal digital assistants. Mobility gives rise to the need for handoff schemes between wireless access points. In this chapter, we demonstrate the effectiveness of transport layer handoff schemes for multimedia transmission, and compare with Mobile IP, the network layer-based industry standard handoff scheme.

With the proliferation of wireless data networks, there is an increasing interest in carrying multimedia over wireless networks using portable devices such as laptops and personal digital assistants. Mobility gives rise to the need for handoff schemes between wireless access points. In this chapter, we demonstrate the effectiveness of transport layer handoff schemes for multimedia transmission, and compare with Mobile IP, the network layer-based industry standard handoff scheme.

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With the proliferation of wireless data networks, there is an increasing interest in carrying multimedia over wireless networks using portable devices such as laptops and personal digital assistants. Mobility gives rise to the need for handoff schemes between wireless access points. In this chapter, we demonstrate the effectiveness of transport layer handoff schemes for multimedia transmission, and compare with Mobile IP, the network layer-based industry standard handoff scheme.

No abstract