Several recent studies have demonstrated the benefits of using the Wireless Sensor Network (WSN) technology in largescale monitoring applications, such as planetary exploration and battlefield surveillance. Sensor nodes generate continuous stream of data, which must be processed and delivered to end users in a timely manner. This is a very challenging task due to constraints in sensor node’s ha...

The best-e ort service o ered by the Internet is not suitable for a large variety of multimedia applications, which require strict guarantees on losses and end-to-end delay. We design functionalities and mechanisms for RTP in order to provide a transport service with the properties of circuit switched networks and with the possibility of transporting both constant and variable rate streams. We ...

There are many routing strategies for message delivery in Delay Tolerant Networks. Among them Multicopying routing strategies have been considered the most applicable DTNs. Epidemic routing and two-hop forwarding routing are the two best approaches of DTN. These two approaches belong to multicopying routing strategies as they allow multiple message replicas to increase message delivery delay. T...

-Group communications are important in Mobile Ad hoc Networks (MANETs). Multicast is an efficient method for implementing group communications. However, it is challenging to implement efficient and scalable multicast in MANET due to the difficulty in group membership management. Efficient Geographic Multicast Protocol (EGMP) uses a virtual-zone-based structure to implement scalable and efficien...

The abstract Data delivery in vehicular ad hoc networks (VANETs) has become one of the most challenging problems due to the rapid movement of vehicles and their bounded communication ranges. How to more efficiently transmit the sensing data about the region of interest to AP is discussed in this paper. Previous work hasn’t distinguished node types to forward data packet commonly, the delivery r...

AbstmctHigh-performance wide-area networks are required to interconnect clusters of computers connected by local area and metropolitan area networks. Optical fiber technology provides long distance channels in the multigigabit per second range. The challenge is to provide switching nodes that handle these data rates with minimum delay, and at a reasonable cost. In this paper, we describe a pack...

background: increasing the complexity in modern radiotherapy techniques have increased the delivery time lowering consequently the treatment efficacy. through simulating the delivery time delay encountered in such techniques, its’ effect on two cancer cell lines and the compensating doses given to prevent such effect was investigated. materials and methods: f10b16 and 4t1 cancer cell lines were...

Wireless network broadcast the information with active node variance. Data delivery over wireless network is one of the key issues to be addressed. Many efficient data delivery methods are widely used in different network environments as they reduce the overhead traffic and delay. Hence they improve the network lifetime. However, they lack effective data delivery on different network environmen...

In this paper, we present an extensive ns-2.33 simulation based performance comparison of four widely known stability-oriented on-demand Mobile Adhoc Network (MANET) routing protocols. Our simulations show that modified Power DSR (PDSR) routes are more stable than existing DSR routes, which are more stable than DSDV and AODV routes. This also results in an increased packet delivery ratio for PD...

In this paper, we present an extensive ns-2.33 simulation based performance comparison of four widely known stability-oriented on-demand Mobile Adhoc Network (MANET) routing protocols. Our simulations show that modified Power DSR (PDSR) routes are more stable than existing DSR routes, which are more stable than DSDV and AODV routes. This also results in an increased packet delivery ratio for PD...