IT - WiMAX Networks - Essay Example

3) The architecture should be compatible with different usage models like fixed, portable, nomadic, etc. 4) The architecture should have the capability to provide IP services and separate the access network and connectivity network. 5) The architecture should provide assistance to network access provider (NAP) the network service provider (NSP), and the application service providers (ASP). 6) By utilizing the internet engineering, the architecture should provide assistance to3GPP/3GPP2, Wi-Fi, and wired networks.

Image Source: [1] Mobile WiMAX Network The architecture of mobile WiMAX consists of All IP platform, all packets technology and no circuit switch telephony. The open IP architecture provide network operator’s huge elasticity while choosing way outs that work with legacy networks or so as to use the most advanced equipments and in shaping what functionality they desire their system to maintain. They can select from an upright incorporated seller to facilitate offers a turnkey way out or they can decide on and choose from a thick ecosystem of best-of-breed companies with a more thin focus.

The architecture permits modularity and elasticity to provide somewhere to stay a wide variety of consumption options such as small scale to large scale, urban, suburban and rural coverage, mesh topologies , flat , hierarchical and their variant, and finally, co-existence of permanent , wandering moveable and mobile usage models. Mobile WiMAX has equally the mobility and Multiple Input Multiple Output (MIMO) functionalities to the IEEE 802.16- 2004 protocol. It is one of two protocols accept by the WiMAX forum with the other one being the IEEE 802.

16 – 2004. The WiMAX system architecture can logically be characterized by a Network Reference Model (NRM). ASN The ASN is commonly referred as the access network of WiMAX and its major responsibly is to offer the communication between the user and the core network services. The Major responsibilities of the ASN are • The ASN must provide relinquish • The Validation of AAA (authentication, authorization and accounting) server through proxy. • The ANS must manage the radio resource • Provide co-operations for other ASN networks.

• Provide a functional coordination between CSN and MS, Technologies Engaged By WiMAX Mobile WiMAX has the operating frequency band of 2 to 6 MHz. In order to perform different functions the WiMAX has to employ the following [2]. • Scalable Orthogonal Frequency Division Multiple Access (SOFDMA). • MIMO • IP (Internet Protocol) • Adaptive antenna systems (AAS) • Adaptive Modulation schemes (AMS) • Advanced Encryption Standard (AES) There are vast possibilities of the WiMAX to be utilized as the prior network service for the users as it is capable of providing the data services as well as voice services by the utilization of VOIP (voice over internet protocol) that enables the user to send and receives the telephony services by utilizing the WiMAX services.

Difference between WiMAX and Wifi The major difference between the WiMAX and Wifi is the difference in the range. Wifi is a short range wireless network having operation in 100 meters or a bit more however, WiMAX network has the range of about several kilometers. Wifi can work in an unlicensed or open spectrum, while WiMAX has a particular licensed frequency spectrum. WiMAX is typically utilized for providing the services by utilizing the IEEE 802.16 such as data services from ISP to the end user and telephony services