Overview

AccordingtoHolzmann [14], protocol speci?cationscomprise ?veelements: the service the protocol provides toits users; the set of messages that are exchanged between protocol entities; the format of each message; the rules governingm- sage exchange (procedures); and the assumptionsabout the environment in which the protocol is intended tooperate. In protocol standards documents, information related to the operatingenvironment isusually writteninformally andmayoccur in several di?erentplaces [37]. This informal speci?cation style canlead to misunderstandings andpossibly incompatible implementations. In contrast,executableformalmodelsrequireprecisespeci?cations oftheoperating environment. Ofparticularsigni?canceisthecommunicationmediumorchannel over which the protocol operates. Channelscan havedi?erent characteristics depending on the physical media (e. g. optical ?bre, copper, cable orunguided media (radio)) they employ. The characteristics also depend on the levelof the protocol inacomputer protocol architecture. Forexample, the link-leveloperates over a singlemedium,whereas the network, transport andapplication levelsmayoperate over a network,or network of networks such as the Internet,which couldemploy several di?erent physical media. Channels (such as satellite links) can be noisy resulting in bit errors in packets. To correct biterrors in packets, many importantprotocols (such the Internet's TransmissionControl Protocol [27]) use CyclicRedundancy Checks (CRCs)[28] to detect errors. On detectingan error,the receiver discards the packet andrelies on the sender to retransmit itforrecovery,known as Au- maticRepeatreQuest(ARQ)[28]. Thisisachievedbythereceiveracknowledging the receipt of good packets, andby the transmitter maintainingatimer. When the timer expires before an acknowledgementhasbeen received, the transmitter retransmits packets that havebeen sent but are as yet notacknowledged. It may also be possibleforpacketsto be lost due to routers in networks discarding packets when congested.

Full Product Details

Author:   Kurt Jensen ,  Jonathan Billington ,  Maciej Koutny
Publisher:   Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
Imprint:   Springer-Verlag Berlin and Heidelberg GmbH & Co. K
Edition:   2009 ed.
Volume:   5800
Dimensions:   Width: 15.50cm , Height: 1.50cm , Length: 23.50cm
Weight:   0.456kg
ISBN:  

9783642048548

ISBN 10:   3642048544
Pages:   275
Publication Date:   11 November 2009
Audience:   Professional and scholarly ,  Professional & Vocational
Format:   Paperback
Publisher's Status:   Active
Availability:   In Print  
This item will be ordered in for you from one of our suppliers. Upon receipt, we will promptly dispatch it out to you. For in store availability, please contact us.

Table of Contents

Designing a Workflow System Using Coloured Petri Nets.- From Requirements via Colored Workflow Nets to an Implementation in Several Workflow Systems.- Soundness of Workflow Nets with Reset Arcs.- Parameterised Coloured Petri Net Channel Models.- On Modelling and Analysing the Dynamic MANET On-Demand (DYMO) Routing Protocol.- Modelling Mobile IP with Mobile Petri Nets.- A Discretization Method from Coloured to Symmetric Nets: Application to an Industrial Example.- The ComBack Method Revisited: Caching Strategies and Extension with Delayed Duplicate Detection.- Comparison of Different Algorithms to Synthesize a Petri Net from a Partial Language.- On Bisimulation Theory in Linear Higher-Order ?-Calculus.

Reviews

Author Information

Tab Content 6

Author Website:  

Customer Reviews

Recent Reviews

No review item found!

Add your own review!

Countries Available

All regions