Performance of Packet Header Compression and Context Replication in Wireless/Mobile Systems

The fourth-generation wireless mobile systems, commonly known as 4G, is expected to provide global roaming across different types of wireless and mobile networks; for instance, from satellite to mobile networks and to Wireless Local Area Networks (WLANs). 4G is an all IP-based mobile network using different radio access technologies and providing seamless roaming and connection via always the best available network (Zahariadis & Kazakos, 2003). The vision of 4G wireless/mobile systems will be the provision of broadband access, seamless global roaming and Internet/data/voice everywhere, utilizing for each the most “appropriate” always-best connected technology (Gustafsson & Jonsson, 2003). These systems are about integrating terminals, networks and applications to satisfy increasing user demands (Ibrahim, 2002; Lu & Berezdivin, 2002). 4G systems are expected to offer a speed of more than 100 Mbps in stationary mode and an average of 20 Mbps for mobile stations, reducing the download time of graphics and multimedia components by more than 10 times compared to currently available 2 Mbps on 3G systems.

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A Speed-Aware Handover System for Wireless Cellular Networks Based on Fuzzy Logic

Mobile Information Systems ◽

10.1155/2008/786486 ◽

2008 ◽

Vol 4 (1) ◽

pp. 1-12 ◽

Cited By ~ 12

Author(s):

Leonard Barolli

Keyword(s):

Fuzzy Logic ◽

Mobile Networks ◽

Base Station ◽

Cellular Systems ◽

Mobile Systems ◽

Mobile Cellular ◽

Handover Mechanism ◽

Mobile Cellular Systems ◽

Wireless Mobile

Presently, the wireless mobile networks and devices are becoming increasingly popular to provide users the access anytime and anywhere. The mobile systems are based on cellular approach and the area is covered by cells that overlap each other. In mobile cellular systems the handover is a very important process, which refers to a mechanism that transfers an ongoing call from one Base Station (BS) to another. The performance of the handover mechanism is very important to maintain the desired Quality of Service (QoS). Many handover algorithms are proposed in the literature. However, to make a better handover and keep the QoS in wireless networks is very difficult. In this paper, we propose a speed-aware handover system based on fuzzy logic. The proposed system has 3 subsystems. The performance evaluation via simulations shows that proposed system has a good handover decision.

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