In battery powered wireless sensor networks, energy efficiency is one of the most important considerations. Based on field experiments on some typical wireless sensor network, we proposed to explicitly use radio models in transmission power control. We ...

Due to the limited resources available to the nodes (hosts) in the ad hoc wireless networks, the network lifetime is crucial for network operations. One effective approach is to keep the distance small enough among nodes to maintain the efficient network ...

Increasing network traffic becomes a burden on the server CPUs, which need to process more packets and still have room for application software. In this paper, we report performance simulation and analysis for servers equipped with TCP/UDP/IP offload ...

Considerable amount of research has been going on in the area of Vehicular Ad-Hoc networks (VANETS), where vehicles moving along streets in an urban city establish a network among themselves. There has been an increasing commercial and research interest ...

We propose the development of a mobile, location-aware tour of the Bonsai Exhibition Garden of the North Carolina Arboretum. The tour will be a web-based, customizable, multimedia presentation on handheld Personal Digital Assistants. The complete tour, ...

Congestion is an important issue which researchers focus on in the Transmission Control Protocol (TCP)network environment. To keep the stability of the whole network, congestion control algorithms have been extensively studied. Queue management method ...

The integration of ground wireless adhoc networks and airborne UAVs is a promising solution for realtime data collection in wireless sensor networks. Such networks play a vital role in many mission critical tasks such as forest fire-fighting and ...

In previous work a DOCSIS model was added to 'ns' to allow simulations to be run to analyze the performance of DOCSIS. These simulations showed that congestion caused by the asymmetric data paths and the MAC contention process caused several performance ...

Peer-to-Peer (P2P) networks based on Gnutella locate files by flooding the network with query messages (a flooding query search). In this paper, a new P2P search paradigm is presented. The network is flooded with the list of shared files and ...

Mobile ad hoc networks (MANETs) have nodes that are dynamically and arbitrarily located. The nodes are often battery powered and may behave selfishly to preserve power. A promising mechanism to deal with node selfishness is to use reputation methods. In ...

Without physical boundaries, a wireless network faces many more security threats than a wired network does. Therefore, in the IEEE 802.16 standard a security sublayer is specified in the MAC layer to address the privacy issues across the fixed Broadband ...

Security is a critical issue in mobile ad hoc networks (MANETs), where mobile nodes communicate with each other over relatively unreliable wireless links with no fixed infrastructure. One example of this occurs on battle fields, where soldiers often wear ...

We show that given the complete knowledge of future topology changes, it is possible to determine the sequence of stable multicast Steiner trees (called the stable mobile multicast Steiner tree) in a multicast session such that the number of tree ...