Download Applications & Services in Wireless Networks by Hossam Afifi, Djamal Zeghlache PDF

By Hossam Afifi, Djamal Zeghlache

Contemporary advancements to instant networks carry with them the questions of provider bargains, carrier administration, carrier keep an eye on, and caliber of provider which are tested during this number of views on rising instant applied sciences.

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It interworks with HLRs/VLRs. It does not however use GPRS main data plain infrastructure (GPRS Tunnelling Protocol GTP-r,u) since this is provided by Mobile IPv6. This specification allows a Mobile Node to start a session in IGPRS and terminate it in GPRS or vice versa. The paper is organized as follows. Section 2 introduces some necessary elements of the GPRS architecture. Section 3 is dedicated to Mobile IPv6 and AAA aspects. Section 4 describes our architecture (Internet GPRS, IGPRS) and finally Section 5 provides by discussion some performance elements for the comparison of the two architectures and a conclusion.

323 based or PRIM) occurs at the IM Service, after which a suitable message is sent from the IM Service (using the specific IM/Presence protocol). The next section provides a brief description of the various protocols applicable for the IM/Presence service. 323. 2. 1 Session Initiation Protocol (SIP) The Session Initiation Protocol (SIP) [HAN 99], an application layer protocol standardized within the IETF, provides advanced signaling and control functionality for a wide variety of multimedia services, including Internet telephony, instant messaging (IM) and distributed gaming.

A specific transformation has to be chosen by the programmer of the API class for the Linux Router [STA 01b]. Since the API is object-oriented a modification of the existing API is not very difficult. The programmer has to take care of being compliant to the DiffServ PHB standards. One possible translation will be presented in this section. 36 Applications and services in wireless networks The first service-level parameter – the bandwidth – can be translated in a trivial way to the correct queue configuration parameter regardless of the service (expedited or assured forwarding) the flow will get.

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