Performance of Mobility Protocols

2008 ◽  
pp. 398-406
Author(s):  
Sherali Zeadally ◽  
Farhan Siddiqui
Keyword(s):  
Mobile Computing ◽  
Mobile Ip ◽  
Mobile Host ◽  
Application Layer ◽  
Personal Mobility ◽  
Mobility Support ◽  
Terminal Mobility ◽  
Automatic Discovery ◽  
Computing Environments ◽  
User Location

In mobile computing environments; the goal is to provide continuous connectivity as a mobile host moves from one network to another – often referred to as terminal mobility. All the needed reconnection occurs automatically and non-interactively (Handley at al.; 1999). Terminal mobility can be achieved by exploiting mobile IP (Perkins; 1998) to provide mobile users the convenience of seamless roaming. Another major requirement for full mobility support is the need of an architecture that enables automatic discovery of the user location which changes with mobility of the user – a feature often referred as personal mobility. New application-layer protocols such as SIP (Handley et al.; 1999) can be used to provide this personal mobility.

Mobility Support in a P2P System for Publish/Subscribe Applications

2011 ◽  
pp. 68-93
Author(s):  
Thomas Kunz ◽  
Abdulbaset Gaddah ◽  
Li Li
Keyword(s):  
Mobile Computing ◽  
Peer To Peer ◽  
New Approach ◽  
Mobility Support ◽  
Unknown Number ◽  
Related Information ◽  
Computing Paradigm ◽  
Significant Performance ◽  
Computing Environments ◽  
P2p System

Peer-to-Peer computing is a popular, relatively new, distributed computing paradigm. It allows for a flexible set of participants to coordinate their resources with little overhead or reliance on central servers/ services and is becoming particularly relevant in mobile computing environments, where peers come and go. Communication between an (unknown) number of peers, which may or may not be online at the same time, is greatly facilitated by the publish/subscribe model. In this chapter, the authors review the stateof- the-art in publish/subscribe systems, focusing on the support for mobile peers in infrastructure-based networks. They propose a novel handoff approach that proactively distributes pub/sub-related information to brokers/superpeers ahead of a peer’s movement. They show through extensive experiments in a small testbed that the new approach has significant performance benefits, compared to the more typical reactive approach, in which pub/sub context is only established after a handoff event occurred.

IP based Seamless Mobility Support in Heterogeneous Networks – Evaluation of Handover Mechanisms for Future Heterogeneous 3GPP Networks (IP basierte nahtlose Mobilitätsunterstützung in heterogenen Netzwerken – Evaluierung von Handover-Mechanismen für zukünftige heterogene 3GPP Netzwerke)

2006 ◽  
Vol 48 (5) ◽  
Author(s):  
Anton Ambrosy ◽  
Oliver Blume ◽  
Dirk Hofmann ◽  
Edgar Kühn ◽  
Stuttgart Tobias Küfner
Keyword(s):  
Heterogeneous Networks ◽  
Packet Loss ◽  
Mobile Ip ◽  
Handover Latency ◽  
Mobility Support ◽  
Seamless Mobility ◽  
Network Load ◽  
Radio Access

Mobile IP (MIP) protocols are candidates for seamless mobility support in heterogeneous networks with different radio access technologies. Handover requirements are analysed by Random-Way-Point mobility simulations. We then simulated packet loss, delay and network load during MIP and Fast MIP handover to identify the main contributions to handover latency. Best performance is found for MIP in Make-Before-Break scenario.

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