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Sensor networks have many applications in monitoring and controlling of environmental properties such as sound, acceleration, vibration and temperature. Due to limited resources in computation capability, memory and energy, they are vulnerable to many kinds of attacks. The ZigBee specification, based on the 802.15.4 standard, defines a set of layers specifically suited to sensor networks. These layers...
Mobile ad hoc network (MANET) consists of a collection of wireless mobile hosts without the required intervention of any existing infrastructure or centralized access point such as base station. The dynamic topology of MANET allows nodes to join and leave the network at any point of time. Wireless MANET is particularly vulnerable due to its fundamental characteristics such as open medium, dynamic...
AODV is one of the most common reactive protocols used in MANET. This paper proposes enhancement in popular on demand routing protocol AODV by improving its local repair mechanism. Enhanced local repair AODV (ELRAODV) makes mobile nodes more aware of the local connectivity by extending original HELLO to NHELLO message in AODV as proposed in. That extra information of the local neighbors allows ELRAODV...
Internet based enterprise level collaboration tools enable organizations to make decisions faster and more accurately with less effort. However, these tools provide limited real-time group collaboration within and across organizations. Multicast protocols were developed to provide efficient group communication. This paper proposes a novel IP multicast network layer filter architecture that provides...
Internet based enterprise level collaboration tools enable organisations to make decisions faster and more accurately with less effort. However, these tools provide limited real-time group collaboration within and across organisations. This paper proposes a novel IP network layer filter architecture that provides efficient and scalable real-time group collaboration between the required entities within...
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