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In mobile ad hoc networks (MANETs) where there exist multiple Internet gateways, performing load balancing among available gateways is vital in order to take full advantage of the network capacity and improve the performance. However, performing load balancing in a wireless environment is very challenging due to the inherently interfering and unreliable nature that characterize wireless communication...
To support IP-mobility of networks in motion, IETF proposed Network Mobility (NEMO) protocol that uses various signaling messages to ensure connectivity of the mobile nodes with the Internet. However, there has been no comprehensive cost analysis of mobility protocol entities that considers all possible costs. In this paper, we have developed analytical models to estimate total costs of key mobility...
In recent years, vehicular networks have been widely studied because these networks become an important part of wireless metropolitan networks. This type of wireless network is different from other conventional wireless mobile networks since the mobile nodes in the networks usually have high speed, sufficient power and dynamic topology. In vehicular networks, vehicles can connect with access points,...
Both the network mobility and the terminal mobility are likely to co-exist in the future. These two mobile communication paradigms have different wireless connectivity models and likely to deploy different schemes to address the wireless related performance issues for TCP. In this paper, we consider TCP Snoop, which allows a mobile terminal to efficiently recover from wireless-related losses. For...
As the Internet continues to shape and reshape our lives, there is a parallel phenomenon taking place in wireless communication which is equally influential. Mobile communication has proved to be a major paradigm in the history of human communication. As both the Internet and mobile telephony continue their dramatic advances, there is a lot of requirement that should be available such as valid IP...
Wireless mesh networks (WMNs) have recently emerged to be a cost-effective solution to support large-scale wireless Internet access. One important component of realizing large-scale WMNs is mobility management. Although a considerable amount of research on handoff management for cellular and Mobile IP networks has been proposed, handoff management for IP-based WMNs remains largely unexplored. Conventional...
Network layer indications are not readily available upon a link change; therefore, general dependence on the network layer may introduce unnecessary delays due to network layer signaling for a simple link layer handoff. If information could be gathered at link layer to determine the need for network layer signaling, then both the delay and signaling load could be really improved over current standards...
Among the characteristics of the future wireless networks is the desire to support a wide range of wireless users and a diverse set of services from many different types of networks. A unifying technology for diverse wireless networking is mobile IP, a protocol established by the Internet Engineering Task Force (IETF) that allows mobile nodes (MN) to change their point of attachment to the Internet...
With the development of Mobile IPv6 and multicast technology, mobile multicast becomes a research hotspot. Based on two basic mobile multicast methods, the Bi-directional Tunnel (BT) method and the Remote Subscription (RS) method, some mobile multicast schemes have been proposed. However, most of them evaluate the performance by means of analysis and simulation, but lack of testing the performance...
The proliferation of wireless technologies, mobile computing and Internet have spurred the development of innovative location-oriented services. For accomplishing this, an accurate and time-efficient location determination system is required. For indoor positioning, WiFi-based solutions are prominent due to the widespread availability of WLANs (wireless LANs). More recently, the RFID (Radio Frequency...
Host identity protocol (HIP) is mainly designed to provide secure and continuous communication by decoupling the transport layer from the internetworking layer. Furthermore, HIP can provide for a degree of internetworking mobility and multi-homing at a low infrastructure cost. Currently, HIP does not support paging, which is widely used in wireless networks to reduce the signaling cost for location...
Mobile communication is increasingly becoming part of everyday life. Haggle (www.haggleproject.org) is an innovative project that exploits human mobility for creating an invisible social network to enable communication in the presence of intermittent network connectivity. Mobile devices equipped with network interfaces, may in fact (temporarily) be out of range of the Internet infrastructure, and...
This paper presents a system for a location-based discovery of points of interest, based on the current geographic position of mobile users. The proposed approach exploits a mixture of Web 2.0 technologies (for the localization of point of interests), positioning techniques and cross-layer networking schemes for a seamless navigation, while moving through different and heterogeneous wireless networks.
Recently, WiBro has been developed to efficiently support broadcasting via wireless network. MBS (multicast broadcast service) based on WiBro has numerous applications including DMB. Since the current MBS implementation uses only common channel which is managed by scheduling, it cannot effectively support many users requesting the service at the same time. This paper proposes a new counting scheme...
Self-adaptive management and quality adaptation of multimedia services are open challenges in the heterogeneous wireless Internet, where different wireless access points potentially enable anywhere anytime Internet connectivity. One of the most challenging issues is to guarantee streaming continuity with maximum quality, despite possible handoffs at multimedia provisioning time. To enable handoff...
The success of next generation wireless networks will rely much on advanced mechanisms for seamless mobility support among emerging heterogeneous technologies. Currently, mobile IP is the most promising solution for mobility management in the Internet. Several IP micro mobility approaches have been proposed to enhance the performance of mobile IP which supports quality of service, minimum packet loss,...
Wireless Broadband Internet (WiBro) system that will be the first commercial and nationwide service is the Korean Wireless Broadband service based on IEEE 802.16e standard. Unlike the mobile communication networks based on the existing cellular system, the core networks of this system consist of IP based packet switching network that will be ultimately deployed by IP version 6 (IPv6) depending on...
The features of mobility, which enormously impact on how communication is evolving into the future, represent a particular challenge in todaypsilas wireless networking research. After an identification and evaluation of the gap between the discontinuities of the communication service inherent to the physical layer of mobile networks and the continuity requirements issue from the stream centric multimedia...
While witnessing the rapid development in the world of wireless communication, it is highly expected that the next generation of wireless network to be quickly adapt with the high Quality of Service (QoS) requirements and demands from mobile wireless users especially in real time and multimedia applications. Mobile IPv6 has been declared to be unsuitable for managing the mobility of end users running...
Mobility access through IPv4 and IPv6 provides seamless services for the user terminals across different access networks. To provide seamless continuity while the mobile is moving from one access networks to another is provided by different mechanisms, on the whole the proposed mechanisms provides mobility with special requirements and access mechanism. Client Mobile IP (CMIP) is the most popular...
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