in this work I have proposed different network architectures using OPNET which consists of combination of ZigBee and WiMAX topologies. ZigBee is used to sense the data from the human body whereas WiMAX is used as a backbone to deliver the data at the distant location using microwave links. The nee of using WiMAX with ZigBee arises as ZigBee network’s coverage area is limited to few meters. This...

Wireless Fidelity (WiFi) network is based on the IEEE 802.11 standard. Worldwide Interoperability for Microwave Access (WiMAX), based on IEEE 802.16, is a standard with similar principles. The main advantage of WiMAX over WiFi is that it covers larger areas and has higher data rates. WiMAX network operators provide WiMAX subscriber units that enable connection to the metropolitan WiMAX network ...

In the new era of communication, WiMAX (IEEE 802.16) is the most emerging technology that enables ubiquitous delivery of broadband wireless access for fixed and mobile users. It is a more innovative and commercially viable alternative to cable modems and DSL technologies as it is cost effective, easy to implement, high performance and high resource utilization technology. This economic environm...

In this paper, a novel network planning process of the Mobile WiMAX for Railway (WiMAX-R) network is proposed. We first analyze the factors need considered in network planning. After introducing the WiMAX-R network architecture, the WiMAX-R network planning process is presented in detail. The process comprises application analysis, capacity prediction, network parameters configuring, coverage p...

1 From the standard and regulations to front-end specifications 1.1 Regulations characteristics The WiMAX standard includes two sub-standards. The first standard is the 802.16a or Fixed WiMAX and the second standard is the 802.16e or Mobile WiMAX. We focus here only on the Mobile WiMAX. The basic radio channel features are summarized in the Table 1.

In this paper, we discuss security problems, with a focus on collaborative attacks, in the Worldwide Interoperability for Microwave Access (WiMAX) scenario. The WiMAX protocol suite, which includes but is not limited to DOCSIS, DES, and AES, consists of a large number of protocols. We present briefly the WiMAX standard and its vulnerabilities. We pinpoint the problems with individual protocols ...

The necessary design steps for the implementation and deployment of WiMAX in a particular region have been discussed. At first, deployment technique and issues of WiMAX campus network are described. A model is proposed for fixed WiMAX connectivity using the WiMAX gateway as a backbone and modem for access purposes. The model is done under some real world application for the campus of University...

WiMAX is one of the emerging wireless broadband transmission standards. Its signal coverage, upload and download rate, and bandwidth efficiency is better than traditional wireless networks. It can be the last mile for where the cable and DSL networks cannot be reached. Because of its characteristic of broadband access, the possible applications are of a wide range, such as web browsing and VOIP...

The development of integrating several wireless network technology make wireless network devices built everywhere. In 1999, IEEE proposes WiMAX broadband wireless technology which has high transmission bandwidth and wide coverage. There are more and more researches as abovementioned wireless technology to increase Mesh network technology which can easily increase network coverage. Intel[1] poin...