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Impact of Mobility on Real-Time Services: Handover Delay

Part of the Signals and Communication Technology book series (SCT)

Guaranteeing host mobility with quality of service is one of the main challenges in heterogeneous wireless systems. As voice over Internet protocol (VoIP) communications increase and are being extended to mobile networks, it is important to support user and host mobility with a satisfactory level of quality in the voice session. Host mobility is essential, because of the strong need to have continuous network connectivity. Moving from one place to another can be modeled as changing the node's point of attachment to the network. Such user mobility triggers various procedures: access network relocation procedures at the link layer (e.g. serving RNS relocation procedures in 3G systems, medium access control protocols in WLAN and WiMax, link layer authentication in WLAN as in chapter 5), data bearers establishment (e.g. PDP context activation in 3G systems) and dynamic host control protocol to obtain an IP address in the network for some systems, network mobility protocols, application layer control protocols (e.g. SIP in IMS).

Guaranteeing host mobility with quality of service is one of the main challenges in heterogeneous wireless systems. As voice over Internet protocol (VoIP) communications increase and are being extended to mobile networks, it is important to support user and host mobility with a satisfactory level of quality in the voice session. Host mobility is essential, because of the strong need to have continuous network connectivity. Moving from one place to another can be modeled as changing the node’s point of attachment to the network. Such user mobility triggers various procedures: access network relocation procedures at the link layer (e.g. serving RNS relocation procedures in 3G systems, medium access control protocols in WLAN and WiMax, link layer authentication in WLAN as in chapter 5), data bearers establishment (e.g. PDP context activation in 3G systems) and dynamic host control protocol to obtain an IP address in the network for some systems, network mobility protocols, application layer control protocols (e.g. SIP in IMS).

Keywords

Mobile Node Home Agent Foreign Agent Voice Over Internet Protocol Mobile IPv6 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Springer Science+Business Media B.V 2009

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