Download e-book for kindle: TCP Performance over UMTS-HSDPA Systems by Mohamad Assaad

By Mohamad Assaad

ISBN-10: 0849368383

ISBN-13: 9780849368387

ISBN-10: 1420013327

ISBN-13: 9781420013320

The evolution of the cellular conversation marketplace is inflicting an important raise in facts site visitors calls for. this might result in disrupted mobility and intermittent degraded channel stipulations that give a contribution to terrible transmission keep an eye on protocol (TCP) functionality. TCP functionality over UMTS-HSDPA structures provides a entire research of the impact of TCP on accomplished program bit price functionality and process capability, and indicates how one can lessen the interplay of instant networks on TCP with minimum rate. With self-contained chapters, the publication contains major sections. the 1st a number of chapters supply historical past and describe the state-of-the-art for instant networks, emphasizing one of many third-generation (3G) instant applied sciences: the common cellular telecommunications approach (UMTS). those chapters additionally contain an research of the general cellphone skill for UMTS unlock ninety nine and high-speed downlink packet entry (HSDPA) platforms. the second one part specializes in the interplay of TCP with instant platforms, featuring an exhaustive checklist of TCP models and hyperlink layer recommendations that adapt TCP (often editing the unique TCP) to a instant community. This part additionally screens mathematical modeling of the interplay of hybrid automated repeat request (HARQ) and TCP in UMTS networks.While supplying info for complex undergraduate scholars who're surprising with code department a number of entry (CDMA) instant structures in addition to UMTS and HSDPA mobile structures, the ebook additionally presents wide insurance of "TCP over instant structures" difficulties and recommendations for researchers, builders, and graduate scholars.

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Proceedings of the Symposium on Applications of Wash Functions, The Catholic University of America, Washington, DC, March 8–13. 15. 0. 2005. Spreading and Modulation (FDD), Release 6, September. 16. Ojanpera, T. and R. Prasad. 2001. WCDMA: Towards IP Mobility and Mobile Internet. Artech House Universal Personal Communications series, Boston. 17. Hammons, R. A. and V. J. Kumar. 1993. On a Recent 4-Phase Sequence Design for CDMA. IEICE Trans. on Communications E76-B, no. 8: 804–13 (August). 18. Price, R.

Wash functions, invented by Wash in [3], are a set of orthogonal functions taking a value of +1 and −1, except at a finite number of discontinuity points called jumps where it takes the value zero. The Wash functions have an order, N , which is the number of orthogonal functions. Wash function of order N , denoted by f j (t) where t ∈ [0; T ] and j = 0, 1, . . , N − 1, can be defined as follows [3,4]: f j (t) = 1 or −1 except at the discontinuity points. f j (0) = 1 for all j . f j (t) has precisely j sign changes in the interval [0; T].

Network containing firewalls requiring use of TCP, nonlive streaming applications that are completely downloaded before being played). The use of retransmission mechanisms is acceptable as long as the number of retransmissions and the overall delay are limited. The use of HARQ mechanism in the medium access control-high speed (MAC-hs) sublayer in HSDPA is acceptable. The ARQ protocol of the RLC sublayer, however, is not suitable for this class of applications due to the important delays introduced in the received information.

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TCP Performance over UMTS-HSDPA Systems by Mohamad Assaad


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