✦ LIBER ✦

Guest editorial on personal communications

✍ Scribed by Yi-Bing Lin

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 16 KB
Volume: 11
Category: Article
ISSN: 1074-5351
DOI: 10.1002/(sici)1099-1131(199801/02)11:1<1::aid-dac350>3.0.co;2-f

No coin nor oath required. For personal study only.

✦ Synopsis

Personal communications systems (PCSs) provide communication services anywhere, anytime, with anybody and in any form. To implement personal communications concepts, extremely sophisticated systems which integrate many diverse technologies are required. This issue contains an extra section focussing on various aspects of PCSs.

In the first article, Charlies Perkins provides an overview of Mobile IP. Mobile IP has been designed within the IETF to support mobility management for mobile computers so that they can connect to the Internet and maintain communications as they move from place to place. This article describes three major component protocols of Mobile IP (Agent Advertisement, Registration and Tunnelling) and route optimization procedures, and a future research road-map for Mobile IP is outlined.

In the second article, Kazem Sohraby investigates traffic behaviour in circular and linear cellular arrays. A model for fixed velocity mobiles is introduced. It is shown that the cellular network traffic is independent of the number of cells in the circular array case and that, compared with non-mobility in both linear and circular arrays, mobility factors such as cell size, call holding time and velocity of mobiles have considerable impact on probabilities of call blocking.

In the third article, Paramvir Bahl, Imrich Chlamtac and Andras Farago address the issues that arise from supporting integrated multirate multimedia traffic in a poor-bandwidth wireless environment. A novel bandwidth allocation strategy is introduced and discussed that can partition the available bandwidth amongst the different traffic classes in a manner that ensures guaranteed quality of service for digital video while minimizing the maximum blocking probability for voice and data connections. This algorithm, which is built on non-trivial mathematical

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