The World Wide interoperability for microwave access (WiMAX) technology support to the flexible channel sizes and different countries use different channel it depends on the rule and regulation of countries and their environment. The WiMAX network asymmetry is largely depends on DL:UL ratio. This paper investigates the effect of channel bandwidth in WiMAX network with network asymmetry using TC...

WiMAX is a high speed, wireless broadband access technology for large coverage area. It provides IP based connectivity to the stationary, mobile as well as nomadic users. Voice over Internet Protocol (VoIP) through WiMAX is the most prominent telecommunication service. In this paper, simulative investigations have been done for VoIP in WiMAX network considering scheduling services [1]. Investig...

Wimax is a wireless metropolitan area network (MAN) technology that provides interoperability, carrier class broadband wireless connectivity to fixed, portable for the last mile. Wimax (Worldwide interoperability for microwave access) is based on IEEE 802.16 standards that provide wireless access to metropolitan area networks and there are several security problems The Wimax technology has grea...

For a broadband wireless standard such as WiMax, security is important and must be addressed. This is to ensure wide acceptance both from the perspective of the end users and the service providers. In order to compete with existing broadband cable or DSL services, the WiMax network must offer comparable security. We discuss the WiMax security mechanisms for authentication, encryption, and avail...

Public safety agencies traditionally use mobile radio systems for communications although cell phones for voice and data are also now widely used. Most law enforcement officials would agree that these communications systems are not sufficient to meet the needs of law enforcement. Consequently there is significant interest in broadband wireless technology. In the research presented in this paper...

The power consumption of wireless access networks will become an important issue in the coming years. In this paper the power consumption of base stations for mobile WiMAX, fixed WiMAX and UMTS is modelled. This power consumption is evaluated in relation to the coverage. For a physical bit rate of 2 Mbps, a power consumption of approximately 5600 W and a range of 1 km is obtained with UMTS. Fix...

IEEE 802.16 standard supports two different topologies: point to multipoint (PMP) and Mesh. In this paper, a QoS mechanism for point to multipoint of IEEE 802.16 and BS scheduler for PMP Mode is proposed. This paper also describes quality of service over WiMAX networks. Average WiMAX delay, Average WiMAX load and Average WiMAX throughput at base station is analyzed and compared by applying diff...

Worldwide Interoperability for Microwave Access (WiMAX) is a telecommunications technology that uses radio spectrum to transmit bandwidth between digital devices. WiMAX has the ability to transmit large amount of data to large distance. The IEEE standard for WiMAX defines an adaptive modulation framework which allows a WiMAX system to communicate with various burst profiles according to the lin...

The WiMAX technology support to different channel bandwidth, cyclic prefix, modulation coding scheme, frame duration, simultaneous two way data transfer and propagation model. The WiMAX network asymmetry is largely depends on DL: UL ratio. This paper evaluate the performance of TCP Sack1 by considering Channel Bandwidth, Cyclic Prefix, Modulation Coding Scheme, Frame Duration, Two way transfer ...

The name "WiMAX" was created by the “WiMAX Forum”, which was formed in June. WiMAX (Worldwide Interoperability for Microwave Access) standards define formal specifications for deployment of broadband wireless metropolitan area networks (wireless MANs).Wireless MANs as needed in WiMAX standards provide wireless broadband access anywhere, anytime, and on virtually any device. Introducing the vari...