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Könyv Performance Comparison of Different WiMAX Configurations - Impact of Scheduling and Contention Resolution on Quality of Service in WiMAX Networks Alexander Klein

Performance Comparison of Different WiMAX Configurations - Impact of Scheduling and Contention Resolution on Quality of Service in WiMAX Networks

Szerző: Alexander Klein
Nyelv: Angol
Kötés: Puha kötésű
Kiadó: VDM Verlag Dr. Mueller E.K.
Elérhetőség: Beszállítói készleten
Küldés 14-21 napon belül
19 483 Ft
WiMAX (Worldwide Interoperability for Microwave Access) is a wireless access technology based on the...

Információk a könyvről

Szerző
Alexander Klein
Nyelv
Angol
Kötés
Könyv - Puha kötésű
Kiadva
2008
oldal
84
EAN
9783836490078
ISBN
3836490072
Enbook ID
06986253
Kiadó
VDM Verlag Dr. Mueller E.K.
Súly
122
Méretek
152 x 229 x 4

Teljes leírás

WiMAX (Worldwide Interoperability for Microwave Access) is a wireless access technology based on the IEEE 802.16 standard. The scope of WiMAX is to provide last mile wireless broadband accessfor fixed and mobile users as an alternative to the wireline DSLa nd cable access. The MAC protocol supports four service classes, the unsolicited grant service (UGS) for constant bit rate services, the real-time polling service, the non real-time polling service, and the best-effort service. The focus of this study is to simulate the performance of VoIP and FTP traffic when transmitted over UGS or best-effort connections. The WiMAX MAC Layer and a simplified PHY Layer model are implemented in the OPNET Modeler. Furthermore,a novel scheduling scheme is developed and different methods for requesting bandwidth for the uplink best-effort connections are investigated. Besides, the focus is laid on the algorithm which isused for contention resolution. In addition, the impact of the frame duration, the number of transmission opportunities per frame,and the kind of bandwidth requests on the total system performance is simulated.

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