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Acharya A. SIP-based mobility architecture for next generation wireless networks
- Proceedings of the IEEE PERCOM’05
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Fast-handoff Schemes for Application Layer Mobility
- Management”, PIMRC 2004 - The 15th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications
, 2004
"... In order to ensure proper quality of service for real-time communication in a mobile wireless Internet environment it is essential to minimize the transient packet loss when the mobile is moving between different cells (subnets) within a domain. Network layer mobility management schemes have been pr ..."
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Cited by 15 (3 self)
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In order to ensure proper quality of service for real-time communication in a mobile wireless Internet environment it is essential to minimize the transient packet loss when the mobile is moving between different cells (subnets) within a domain. Network layer mobility management schemes have been proposed to provide optimized fast-handoff for multimedia streams during a client’s frequent movement within a domain. This paper introduces application layer techniques to achieve fasthandoff for real-time RTP/UDP based multimedia traffic in a SIP signaling environment. These techniques are based on standard SIP components such as user agent and proxy which usually participate to set up and tear down the multimedia sessions between the mobiles. Unlike network layer techniques, application layer techniques do not have to depend upon any additional components such as home agent and foreign agent. It thus provides a network access independent solution suitable for application service providers. I.
Fast Intra-Network and Cross-Layer Handover (FINCH) for WiMAX and Mobile Internet
"... Abstract—To support fast and efficient handovers in mobile WiMAX, we propose Fast Intra-Network and Cross-layer Handover (FINCH) for intradomain (intra-CSN) mobility management. FINCH is a complementary protocol to Mobile IP (MIP), which deals with interdomain (inter-CSN) mobility management in mobi ..."
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Cited by 10 (0 self)
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Abstract—To support fast and efficient handovers in mobile WiMAX, we propose Fast Intra-Network and Cross-layer Handover (FINCH) for intradomain (intra-CSN) mobility management. FINCH is a complementary protocol to Mobile IP (MIP), which deals with interdomain (inter-CSN) mobility management in mobile WiMAX. FINCH can reduce not only the handover latency but also the end-toend latency for MIP. Paging extension for FINCH is also proposed to enhance the energy efficiency. The proposed FINCH is especially suitable for real-time services in frequent handover environment, which is important for future mobile WiMAX networks. In addition, FINCH is a generic protocol for other IEEE 802-series standards. This is especially beneficial for the integration of heterogeneous networks, for instance, the integration of WiMAX and WiFi networks. Both mathematical analysis and simulation are developed to analyze and compare the performance of FINCH with other protocols. The results show that FINCH can support fast and efficient link layer and intradomain handovers. The numerical results can also be used to select proper network configurations. Index Terms—Intradomain mobility management, cross-layer design, WiMAX, mobile Internet. Ç
Seamless mobility in 4G systems
, 2005
"... ISSN 1476-2986 The proliferation of radio access technologies, wireless networking devices, and mobile services has encouraged intensive nomadic computing activity. When travelling, mobile users experience connectivity disturbances, particularly when they handoff between two access points that belon ..."
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Cited by 7 (0 self)
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ISSN 1476-2986 The proliferation of radio access technologies, wireless networking devices, and mobile services has encouraged intensive nomadic computing activity. When travelling, mobile users experience connectivity disturbances, particularly when they handoff between two access points that belong to the same wireless network and when they change from one access technology to another. Nowadays, an average mobile user might connect to many different wireless networks in the course of a day to obtain diverse services, whilst demanding transparent operation. Current protocols offer portability and transparent mobility, however, they fail to cope with huge delays caused by different link-layer characteristics when roaming between independent disparate networks. In this dissertation, I address this deficiency by introducing and evaluating practical methods and solutions that minimise connection disruptions and support transparent mobility in future communication systems. Firstly, I show that repercussions on the link can be minimised by using the appropriate
Location Authentication Methods for Wireless Network Access Control
"... Location-based service provisioning is of great interests to wireless Internet service providers. However, the essential mechanism, location authentication, can easily become the target of network hackers for free-riding and attacks. We identify two aspects for improvements at the network providers ..."
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Cited by 5 (0 self)
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Location-based service provisioning is of great interests to wireless Internet service providers. However, the essential mechanism, location authentication, can easily become the target of network hackers for free-riding and attacks. We identify two aspects for improvements at the network providers to enforce location authentication for network access control — location-based key distribution and run-time location verification, and propose solutions to enforce network access control based on locations, which we refer to as LENA (Location-Enforced Network Access). First, we designed a location authentication and authorization protocol based on Diffie-Hellman algorithm, which securely authenticates the location claims of mobile wireless devices, and distributes shared keys for data encryption purposes. Secondly, we employ a mobility management protocol to guarantee that the mobile devices are physically at where they claim to be when they access the network. These two steps can separately enforce location based network access control, or be combined. LENA eliminates the dependence on expensive hardware devices in order to localize the mobile devices, and solves a couple of possible attacks to the system. The computational, communication, and the memory requirements are evaluated and validated using simulations.
The SMesh Wireless Mesh Network
, 2009
"... Wireless mesh networks extend the connectivity range of mobile devices by using multiple access points, some of them connected to the Internet, to create a mesh topology and forward packets over multiple wireless hops. However, the quality of service provided by the mesh is impaired by the delays an ..."
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Cited by 2 (0 self)
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Wireless mesh networks extend the connectivity range of mobile devices by using multiple access points, some of them connected to the Internet, to create a mesh topology and forward packets over multiple wireless hops. However, the quality of service provided by the mesh is impaired by the delays and disconnections caused by handoffs, as clients move within the area covered by multiple access points. We present the architecture and protocols of SMesh, the first transparent wireless mesh system that offers seamless, fast handoff, supporting real-time applications such as interactive VoIP. The handoff and routing logic is done solely by the access points, and therefore connectivity is attainable by any 802.11 device. In SMesh, the entire mesh network is seen by the mobile clients as a single, omnipresent access point, giving the mobile clients the illusion that they are stationary. We use multicast for access points coordination and, during handoff transitions, we use more than one access point to handle the moving client. SMesh provides a hybrid routing protocol that optimizes routes over wireless and wired links in a multi-homed environment. Experimental results on a fully deployed mesh network demonstrate the effectiveness of the SMesh architecture and its intra-domain and inter-domain handoff protocols. 1
Mobility Anchor Point Selection Based on User Mobility in HMIPv6 Integrated with Fast Handover Mechanism
"... Abstract – In the context of Hierarchical Mobile IPv6 integrated with Fast Handover mechanism, this paper proposes two MAP selection algorithms, both based on the classification of users depending on their mobility. Furthermore an enhancement of one of the two algorithms is presented, it introduces ..."
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Abstract – In the context of Hierarchical Mobile IPv6 integrated with Fast Handover mechanism, this paper proposes two MAP selection algorithms, both based on the classification of users depending on their mobility. Furthermore an enhancement of one of the two algorithms is presented, it introduces the concept of bufferization at MAP level. Extensive simulations have been performed to analyse and investigate algorithms results.
PEER-TO-PEER BASED ARCHITECTURE FOR MOBILITY MANAGEMENT IN WIRELESS NETWORKS
"... Abstract: Mobility management is an important task in wireless networks. The Mobile IP protocol provides a basic solution to the mobility management. However, Mobile IP suffers from several problems. In this paper, we propose an enhancing version of Mobile IP by using the Peer-to-Peer (P2P) network ..."
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Abstract: Mobility management is an important task in wireless networks. The Mobile IP protocol provides a basic solution to the mobility management. However, Mobile IP suffers from several problems. In this paper, we propose an enhancing version of Mobile IP by using the Peer-to-Peer (P2P) network technology. We organize home agents into P2P networks and use the Domain Name System (DNS) to provide the universal telephone number that can uniquely identify one person regardless of the type of equipped device. We claim that our proposed version can provide the advantages of update locality, scalability, load balancing, fault tolerance, and self-administration. Key words: Mobile IP; Domain Name System; Peer-to-Peer; Wireless Networks. 1.
Advanced IPv6 Mobility Management for Next Generation Wireless Access Networks
"... ’Eν αρχ´ην ɛ´ι o λóγoς ..."
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Architecture, Mobility Management and Performance Issues for Wireless Internet Telephony and Multicast Streaming -- Thesis Proposal
"... Future mobile wireless Internet will need to support flexible interactive services such as wireless Internet telephony and other streaming services like delivery of multimedia content over wireless net-works. This thesis proposal focuses on application layer mobility management schemes for wireless ..."
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Future mobile wireless Internet will need to support flexible interactive services such as wireless Internet telephony and other streaming services like delivery of multimedia content over wireless net-works. This thesis proposal focuses on application layer mobility management schemes for wireless Internet telephony and multicast content distribution in a mobile environment involving heterogeneous access networks. We propose an application layer mobility management scheme for wireless Internet telephony and streaming services. We focus our analysis on certain aspects of the design such as terminal mobility supporting security, quality of service and fast-handoff mechanism over heterogeneous networks. Many of the functional components such as signaling, registration, hand-off, and session continuity associated with wireless Internet telephony have been prototyped. We have carried out the performance evaluation with other layer three mobility management protocols such as Mobile IP, MIP-LR, Mobile IPv6, IDMP and host-based routing such as MMP. As part of providing streaming services to the mobile users we have designed a multicast-based overlay con-tent distribution network called MarconiNet using extension of standard IETF based protocols such as SIP, RTP/RTCP, SAP and SDP. Several functional components of MarconiNet such as local ad-vertisement, handoff and quality of service associated with a scalable content distribution network have been analyzed. A prototype system has been built using hierarchical scope based multicast and application layer triggering techniques.
