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WiFi networks carrying IPv6 traffic with Proxy-based mobility support are to considered here. The performance of the handover function is first tested through the analysis of the effects of the packet size and inter-arrival times. Then, the sequence of events occurring during the handover period are scrutinized to observe the drawbacks that led to the obtained results. Finally, some suggestions are...
In this paper, a generic framework for dynamic bandwidth management of SDH resources is proposed in context of Unicast NGN service solutions. This avoids major up-gradation of existing network while obtaining maximum benefits from existing protocols and design practices. Mechanisms of traffic monitoring and hierarchical address allocation are also proposed.
In this paper, a new delay-enabled EDCF for the transport of real-time traffic over an IEEE802.11e wireless LAN is proposed. The proposed technique will drop any packet belonging to a conversational class when a maximum queueing delay is reached. The packets belonging to an interactive or a background class are not dropped due to the queuing delay. The performance of this new technique is evaluated...
A media-independent access control function is proposed to arbitrate access of two types of traffic running on a terminal with concurrent accessibility to two different networks. Specifically, voice and data traffic, and UMTS and WLAN networks are to be considered. To improve its QoS, voice traffic is given preferential access to the Cellular network, while data is assumed to have preferential access...
The ubiquitous presence of wireless terminals with multimedia and mobile support has become a complex challenge for the provision of a desired level of QoS. Two tiers of priority have been considered in the literature: one related to the state of the call, i.e. is it a new call or an existing call being handed over to the considered cell; and the second on the type of traffic being carried, i.e. is...
A wavelength-routed (WR) optical network using an adaptive burst size (ABS) optical burst switching (OBS) scheme is to be considered. The aim is to improve the offered QoS and offer distinctive class-of-service (CoS) separation for various network conditions in an adaptive way. Specifically, a hybrid triggering policy is suggested to achieve the required network performance, such as average packet...
A quorum queueing system is considered here. It is assumed that the server activation is triggered only if the queue size is larger than or equal to r. Furthermore, after a service completion, if the queue size is less than r the server is assumed to wait for the queue to be filled. Once the queue reaches r, a random sample of customers, drawn from the sample space {1,2,...,r}, is taken for service...
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