Venkatesh Sarangan

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We propose a novel adaptive MAC protocol for wireless sensor networks. In existing protocols such as SMAC, the sensor nodes are put to sleep periodically to save energy. As the duty cycle is fixed in such protocols, the network throughput can degrade under heavy traffic, while under light loads, unwanted energy consumption can occur. In the proposed(More)
This paper presents the design principles of Dynamic Service Negotiation Protocol (DSNP). DSNP is a protocol to negotiate the SLS (Service Level Specification) in IP layer. It can be used for service negotiation from host to network, network to host, and network to network. The automated negotiation makes service negotiation efficient in terms of time,(More)
A framework for reducing the average reading time of passive RFID tags in dense environments is introduced. The proposed framework termed Accelerated Frame Slotted ALOHA (AFSA) can be used in conjunction with almost all RFID tag reading protocols that are based on frame slotted ALOHA. It is shown that AFSA reduces the tag reading time by avoiding the(More)
DMAC is a popular data gathering MAC protocol for wireless sensor networks. It employs staggered sleep-awake schedules to enable continuous data forwarding along a data gathering tree, resulting in reduced end-to-end delays and energy consumption. In this paper we present a generalized model for the DMAC protocol and for this generalized model we have(More)
Multimedia applications such as video-conferencing, telemedicine, HDTV etc. have very stringent Quality of Service (QoS) demands and require a connection oriented service. For these applications, a path satisfying their requirements in terms of bandwidth, delay, buffer etc. needs to be found. As conventional IP routing is based only on hop counts, it is not(More)
In recent years, there has been a growing interest in designing mobile systems consisting of special relay nodes whose mobility can be controlled by the underlying network. In this paper, we consider the design of a heterogeneous mobile ad hoc network (MANET) consisting of two kinds of mobile nodes - the traditional nodes with limited energy and a few(More)
We can improve the end-to-end throughput between a sender and receiver in a wireless network using multiple paths which do not interfere with each other. Given that the problem of finding such paths is computationally hard, the paper focuses on finding multiple paths which may have interference between them, but still are able to obtain the maximum possible(More)
Leak localization is a major issue faced by water utilities worldwide. Leaks are ideally detected and localized by a network-wide metering infrastructure. However, in many utilities, in-network metering is minimally present at just the inlets of sub-networks called District Metering Area (DMA). We consider the problem of leak localization using data from a(More)
This paper presents a survey of the protocols that have been proposed for facilitating dynamic service negotiation in next generation Internet. We begin by illustrating the terms service level agreement (SLA) and service level specification (SLS) defined by the IETF. We then discuss the working of the existing service negotiation protocols with respect to a(More)