Application of Petri Nets to Communication Networks: by Carla Capellmann, Heinz Dibold, Uwe herzog (auth.), Jonathan PDF

By Carla Capellmann, Heinz Dibold, Uwe herzog (auth.), Jonathan Billington, Michel Diaz, Grzegorz Rozenberg (eds.)

ISBN-10: 354065870X

ISBN-13: 9783540658702

Petri nets provide a mathematically outlined method for the specification, layout, research, verification and function evaluate of concurrent disbursed structures. they give not just special semantics and a theoretical origin, but additionally a graphical shape that allows the knowledge of either info and keep watch over circulate in the similar formalism. As an intuitively attractive graphical type of presentation, Petri nets are the version of selection in quite a few applications.
Communications networks, starting from conventional telecommunication platforms to complicated Internet-based details companies, are inherently dispensed and include structures with at the same time working elements. This quantity provides a variety of the most recent advances within the use of Petri nets for the modeling, research and administration of conversation networks and structures within the broadest experience of those terms.

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Moreover, excessive pre-buffered data wastes memory usage and delays the starting time of playback. Find the optimal pre-buffering time is an important issue in this approach. Since SIGMA does not pre-buffer any data in the client, such optimization issues are not present in SIGMA. Patanapongpibul et al. (2003) use the router advertisement (RA) cache. The disadvantage of this method is that it needs extra memory for RA cache; SIGMA does not involve any caching and hence does not suffer from such memory problems.

In addition, to afford higher voice transmission rates, 2G standards also provide SMS and data services. SMS services have been very popular with young  Introduction to Mobile Multimedia Communications people all over the world. 5G to increase the transmission speed, as well as to afford those services. 5G is 384 kbps, which is not sufficient for application services that involve audio and video transmission such as mobile TV and video conferencing. For this, 3G generation mobile communication has recently appeared in the market to provide broadband communication, that is, up to 2Mbps transmission.

It can be seen that packets arrive at the MH without any gap or disruption; this is also a powerful proof of SIGMA’s smoother handoff as compared to handoff in Mobile IP. This experimentally demonstrates that a seamless handoff can be realized with SIGMA. Figure 11 shows a zoomed-in view of the packet trace during the SIGMA handoff period; a handoff latency of six milliseconds can be seen between the packets arriving at the old and new paths. Figure 12 shows the RTT during SIGMA handoff. A seamless handoff is evident from the absence of any sudden RTT increase during handoff.

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Application of Petri Nets to Communication Networks: Advances in Petri Nets by Carla Capellmann, Heinz Dibold, Uwe herzog (auth.), Jonathan Billington, Michel Diaz, Grzegorz Rozenberg (eds.)

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