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Security Management in the Next Generation Wireless Networks  [cached]
Yan Zhang,Masayuki
International Journal of Network Security , 2006,
Abstract: In this paper, we make an introduction to the security management in the next generation wireless mobile networks, including the access security mechanisms in the circuited-switched domain, packet-switched domain and emerging IP multimedia subsystem domain. Several research challenges are identified, including security architecture with network heterogeneity, energy-security tradeoffs and mobility-security interaction. The identified issues can serve as the potential guidance for further study to satisfy higher security requirement and lower introduced overhead.
Converged Wireless Networking and Optimization for Next Generation Services  [cached]
J. Rodriguez,V. Monteiro,A. Gomes,Marco Di Renzo
EURASIP Journal on Wireless Communications and Networking , 2010, DOI: 10.1155/2010/924720
Abstract: The Next Generation Network (NGN) vision is tending towards the convergence of internet and mobile services providing the impetus for new market opportunities in combining the appealing services of internet with the roaming capability of mobile networks. However, this convergence does not go far enough, and with the emergence of new coexistence scenarios, there is a clear need to evolve the current architecture to provide cost-effective end-to-end communication. The LOOP project, a EUREKA-CELTIC driven initiative, is one piece in the jigsaw by helping European industry to sustain a leading role in telecommunications and manufacturing of high-value products and machinery by delivering pioneering converged wireless networking solutions that can be successfully demonstrated. This paper provides an overview of the LOOP project and the key achievements that have been tunneled into first prototypes for showcasing next generation services for operators and process manufacturers.
Converged Wireless Networking and Optimization for Next Generation Services  [cached]
Rodriguez J,Monteiro V,Gomes A,Di Renzo Marco
EURASIP Journal on Wireless Communications and Networking , 2010,
Abstract: The Next Generation Network (NGN) vision is tending towards the convergence of internet and mobile services providing the impetus for new market opportunities in combining the appealing services of internet with the roaming capability of mobile networks. However, this convergence does not go far enough, and with the emergence of new coexistence scenarios, there is a clear need to evolve the current architecture to provide cost-effective end-to-end communication. The LOOP project, a EUREKA-CELTIC driven initiative, is one piece in the jigsaw by helping European industry to sustain a leading role in telecommunications and manufacturing of high-value products and machinery by delivering pioneering converged wireless networking solutions that can be successfully demonstrated. This paper provides an overview of the LOOP project and the key achievements that have been tunneled into first prototypes for showcasing next generation services for operators and process manufacturers.
Seamless Handoff Architecture: A Micromobility Management for Next Generation Wireless IP Networks  [PDF]
D. Saraswady,S. Shanmugavel
Information Technology Journal , 2004,
Abstract: Mobile IP can provide macromobility instead of the original IP existing communication. Mobile IP hosts are able to retain all existing communication, send and receive information while moving, despite their current point of attachment of Internet. Since the original mobile IP does not consider micromobility, it cannot avoid handoff latency. The latency causes packet loss or large variations of the packets delivery time. This study, proposed a mechanism to perform fast handoff in IP-based mobile networks for real time packet communication in a commercial cellular environment. Present proposal is used to re-establish the communication link quickly and to minimize the handoff latency that occurs during mobile IP handovers. In this scheme, two different mechanisms are proposed to handle micromobility and macromobility. The micromobility handover handles the movements within the same domain. Macromobility handover supports handovers between two adjacent domains. The reason for having several subnets is to deploy the network over a wide area to keep the mobile user in the same network as long as possible. The novelties of the scheme is to retransmit the buffered packets during micromobility handover and several multiple mobility agents protocols extensions have been proposed to avoid potential bottlenecks in single mobility agent configurations. Such multiple mobility agents schemes allow the use of dynamic load balancing policies to further improve the overall performance. Load balancing action consists of data flows being redirected to vacant servers (mobility agent) rather than packets being dequeued and moved among servers. The entire scheme is performed within the proposed hierarchical topology named as Seamless Handoff Architecture (SHA) based on next-generation IP networks in which both micromobility and macromobility handovers are analyzed. The architecture and simulation results presented in this study are based on the network simulator (ns-2). The performance of the proposed architecture is compared with hierarchical mobile IP micromobility protocol. From the results, it is observed that, in the proposed architecture the handoff latency due to binding updates is reduced because of localizing the binding updates and thereby reducing the probability of the packet loss during handoff.
Developing an Efficient DMCIS with Next-Generation Wireless Networks  [PDF]
Al-Sakib Khan Pathan,Choong Seon Hong
Computer Science , 2007,
Abstract: The impact of extreme events across the globe is extraordinary which continues to handicap the advancement of the struggling developing societies and threatens most of the industrialized countries in the globe. Various fields of Information and Communication Technology have widely been used for efficient disaster management; but only to a limited extent though, there is a tremendous potential for increasing efficiency and effectiveness in coping with disasters with the utilization of emerging wireless network technologies. Early warning, response to the particular situation and proper recovery are among the main focuses of an efficient disaster management system today. Considering these aspects, in this paper we propose a framework for developing an efficient Disaster Management Communications and Information System (DMCIS) which is basically benefited by the exploitation of the emerging wireless network technologies combined with other networking and data processing technologies.
Enabling Roaming in Heterogeneous Multi-Operator Wireless Networks  [cached]
Oscar Salazar Gaitán,Philippe Martins,Jacques Demerjian,Samir Tohmé
Journal of Communications , 2007, DOI: 10.4304/jcm.2.4.18-28
Abstract: Next generation wireless networks will take advantage of the popularity and the data rates offered byunlicensed wireless networks to enhance cellular services. Nowadays, it is not surprising to see heterogeneous wireless networks coexisting on a daily basis i.e. UMTS, WiFi, and WiMAX. Unfortunately, technical issues and the lack of roaming agreements between network operators prevent interoperability. One of the goals of next generation wireless networks is to enable service mobility between heterogeneous wireless networks, thus we present in this article a SIP-based roaming architecture to enable service mobility in heterogeneous multi-operator wireless networks. Our objective is to establish mutual trust between cellular network operators and unlicensed wireless networks through a efficient SLA monitoring and enforcement and brokerbased access control. All this, with minimal changes in current wireless network architectures.
Reliable Integrated Architecture for Heterogeneous Mobile and Wireless Networks  [cached]
Christian Makaya,Samuel Pierre
Journal of Networks , 2007, DOI: 10.4304/jnw.2.6.24-32
Abstract: The major trend in next-generation or 4G wireless networks (NGWN/4G) is the coexistence of diverse but complementary architectures and wireless access technologies. In this context, an appropriate integration and interworking of existing wireless networks are crucial to allow seamless roaming across those networks. Several integrated architectures have been proposed for 3G cellular networks and wireless local area networks (WLANs) by both third generation wireless initiatives, 3GPP and 3GPP2. However, the proposed architectures have several drawbacks, the most significant being the absence of quality of service (QoS) guarantees, seamless roaming and service continuity. This paper proposes a novel architecture, called Integrated InterSystem Architecture (IISA), which enables the integration and interworking of various wireless networks and hide their heterogeneities from one another. The IISA architecture aims provisioning of guaranteed seamless roaming and service continuity across different access networks. Performance evaluation shows that IISA together with the proposed handoff management scheme provide significant gains than existing interworking architectures and mobility management protocols.
An Efficient Data Link Protocol for Integrated Wireless Networks: Next Generation Networks (NGN)  [PDF]
Sanjay Kumar Biswash,Chiranjeev Kumar
International Journal on Computer Science and Engineering , 2010,
Abstract: The seamless integrated communication has a vital role in pervasive communication. It has implemented on next generation networking. There is various integration issues: coupling, decoupling, mobility, IP etc. In this paper we propose an efficient protocol for the hybrid network and it covers the basic terminology as: syntax, semantic and timing properties and narrow the dilemma of above issues. It provides the embedment of all different isolated heterogynous networks for seamlessintegration.
Reduction of Error in Handoff Initiation Time Calculation for Next-Generation Wireless Systems
Debabrata Sarddar,Arnab Raha,Tapas Jana,Shovan Maity
International Journal on Computer Science and Engineering , 2010,
Abstract: Recent research in wireless communications technologies has focused to the development of Next-generation wireless systems (NGWS) which integrate various existing wireless networks technologies, each of which is optimized for some specific services such as WLANs, WiMAX, General Packet Radio Service (GPRS) and Universal Mobile Telecommunications System (UMTS). The most important and challenging issue is to realize seamless handoffs with small handoff latency and packet loss to ensure the Quality of Service (QoS) in NGWS. In this paper, we propose a handoff management architecture using relative signal strength of the present and neighboring base stations to calculate the handoff initiation time. To take the right decision of handoff initiation time we use mobile’s speed, handoff signaling delayinformation and also the size of the present and neighboring celland reduce the errors associated with them. The performance analysis shows that the approach ensures successful handoff and reduces call blocking probability.
Cross Layer Protocols For Multimedia Transmission In Wireless Networks  [PDF]
Santhosha Rao,Kumara Shama
International Journal of Computer Science and Engineering Survey , 2012,
Abstract: Wireless networks initially inherited the traditional layered architecture from wired networks. Nevertheless, as third and fourth generation wireless communications and networking begin to proliferate in the area of communication networks, the suitability of the layered architecture is coming under close scrutiny from the research community. It is repeatedly argued that although layered architectures have served well for wired networks, they might not be suitable for wireless networks [1]. One of the key challenges for next-generation broadband wireless networks is to devise end-to-end protocol solutions across wired and wireless networks to accommodate large densities of highly mobile users demanding services and applications with a wide range of Quality of Service (QoS) requirements. Hence, in order to meet the challenging demands on future wireless networks, it may be required to adopt new approaches in which protocols can be designed by violating the reference layered architecture allowing direct communication between protocols in nonadjacent layers Such violations of a layered architecture have been termed as cross-layer design(CLD).
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