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In this paper, we propose L3 handover scheme using SIP messages to minimize handover latency and packet loss in a MN with single interface. Packet loss and handover latency arise from L2/L3 association delay and IP configuration delay when the MN transfers internet connectivity from the serving access router to the target access router using legacy terminal mobility mechanisms. Therefore, seamless...
This paper proposes a method for the IP layer link aggregation using flow information to use all available mobile interfaces for backbone network access simultaneously in a vehicle mobile router. For this purpose, we present the design of the IP layer link aggregation functionality and the design of the aggregator which is the essential part of the IP layer link aggregation functionality. In the proposed...
The following topics are dealt with: performance modelling; routing mechanism; distributed systems; parallel systems; service oriented architecture; communication technology; protocols; autonomic network systems; Internet computing; ad hoc networks; wireless sensor networks; privacy management; mobile networks; multimedia systems; pervasive computing; ubiquitous computing; security intrusion detection;...
This paper deals with a practical approach for planning WLAN hotspots to be underlaid within an existing 3G network. Given the number of access points (APs) and access routers (ARs), their locations, call handling capacities of ARs as well as serving GPRS Support Nodes (SGSNs), intra-WLAN handoff costs, and 3G/WLAN inter-system handoff costs, an important consideration for a mobile telecom service...
The integration cellular networks, wireless local area networks (WLANs), and the new paradigm of mobile ad hoc networks (MANETs) is the trend for next generation mobile networks. And the multi-hop routing mechanism is an open and challenge issue in this area. In this paper, a multi-hop routing mechanism with fuzzy estimation of links for heterogeneous wireless networks (HWNs) is proposed. The mechanism...
Ubiquitous computing has drawn significant attention. Under this environment, there may consist of different networks such as WLANs, WPANs, Ad Hocs, and 3Gs, but with the help of mobile IP scheme, users are able to get services and resources from all kinds of networks at anytime and anywhere. However, when a mobile node (MN) moves to a foreign domain or roams around different domains, the authentication...
Network mobility (NEMO) aims providing seamless Internet connectivity for the network which is moving around with vehicles. Multiple care of addresses (MCoA) registration was also proposed as an extension. This paper studies the seamless Internet connectivity of mobile router (MR) which is equipped with WLAN, CDMA and GPRS interfaces simultaneously. Concretely, a smooth inter-interfaces hand-off algorithm...
In this paper, we consider a multihoming mobile router to be connected via dual interfaces such as WLAN (Wireless LAN) and WiBro (Mobile WiMAX). In order to provide redundancy and fault tolerance, we propose load balancing scheme using policy routing in a mobile router. This scheme can improve network reliability and guarantee the continuous connectivity with desirable Quality of Service (QoS). To...
The ongoing large-scale deployment of digital broadcast networks adds an exciting new dimension to the wireless communication universe. This paper presents a novel global and unifying approach to network convergence with concurrent access and seamless handover between multiple broadcast networks and several communication networks for the uplink and feedback channel. In particular, we include DVB-H...
The roaming (or handover) between heterogeneous networks is an emerging issue of the most recent communication environment. The wide deployment of wireless networks like WLAN, CDMA or WiMax accelerates growth of chance requiring roaming across heterogeneous wireless networks. As a solution of mobility management across heterogeneous networks the MIP6 (mobile IPv6) is used generally and NEMO (network...
QoS provisioning in wireless ad hoc networks is difficult due to issues like lossy wireless media, need for suitable medium access protocols to handle contention on shared media and route determination across several wireless nodes. Mobility of nodes in a mobile ad hoc network (MANET) further complicates this task. The problem gets compounded if one seeks an efficient set of routing and medium access...
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