| WiMAX technology is identified as Worldwide | | | | frequencies that will evade interference with other |
| Interoperability for Microwave Access; it is | | | | wireless network applications. WiMAX system's |
| formed in June 2001 to encourage conformance | | | | communication date rate and range differ a lot |
| and interoperability of the WiMAX (IEEE 802.16) | | | | depending on implementation usage of frequency |
| standard, officially known as Wireless Metropolitan | | | | bands. These advantages of flexibility allow |
| Area Network (WMAN). WiMAX technology | | | | providers to employ different frequencies that |
| intended to offer wireless data in a related fashion | | | | depend on the speed and range needed for a |
| as compare to WiFi but on a outsized level and | | | | particular data communication. The WiMAX |
| speed, therefore building national wireless | | | | technology attains higher data transmission rates |
| networks with ease. | | | | in part by OFDM (Orthogonal Frequency Division |
| The driving forces behind WiMAX technology are | | | | Multiplexing). OFDM amplifies data capacity and |
| link-to-multilink microwave networks from | | | | bandwidth via dividing broad capacity channels to |
| organizations for instance Alcatel and Siemens | | | | many narrowband channels; every channel uses |
| stay alive for years. Alternatively WiMAX offers a | | | | different frequencies that can transmit different |
| consistent technology according to its standard. | | | | pieces of a message at the same time. |
| WiMAX technology open loom could let product | | | | The spaces between channels are extremely |
| manufacturers make revenues of scale via | | | | close mutually other than avoiding intervention as |
| producing number of WiMAX products & | | | | nearby channels are orthogonal to each other and |
| components to single IEEE 802.16 standard, this | | | | therefore no overlapping between them. The |
| also allow component manufacturers buy | | | | primary IEEE 802.16 standard uses the 10 to 66 |
| low-cost, standards compliant components from | | | | GHz frequency range. On those higher frequencies |
| rival component providers. This would defiantly | | | | WiMAX network needed a straight line of sight |
| help existing wireless service providers. | | | | among senders & receivers. This factor |
| In addition, service providers lacking a mobile | | | | shrinks the multi path distortion that arises when |
| network can start a WiMAX technology network | | | | transmitting signals not follow the line of sight |
| at comparatively stumpy price. WiMAX | | | | echoed of outsized items and finish off out of |
| technology would also allow interoperability among | | | | organization, in this manner jumbling the inbound |
| different systems. WiMAX technology will offer | | | | communication and reducing bandwidth. |
| high data speed network connections and in this | | | | Dropping multi path distortion could therefore |
| manner serve as a backhaul for WiFi LAN | | | | enhance the bandwidth. In theory WiMAX |
| (WLAN) hot spots, where people on the move | | | | network can offer single channel data rates up to |
| can access carriers' WiFi services on mobile | | | | 75 Mbits/s equally on the downlink and uplink. |
| technology basis. WiMAX technology possibly will | | | | Service providers can use several 802.16 channels |
| offer a much cheaper, easier to build network | | | | for single broadcast to offer bandwidths of up to |
| infrastructure other than the physical medium of | | | | 350 Mb per second. |
| WiFi backhauls that cable, T1 or DSL systems | | | | The accepted IEEE 802.11b WiFi WLAN technology |
| presently offer. These issues, together with user's | | | | data rate are limited to 11Mbps, on the other hand |
| requirements for broadband facilities, will offer the | | | | newer 802.11a and 802.11g provide up to 54Mbps |
| grounds to markets to grow with WiMAX and | | | | in favorable conditions but practically all of the |
| wireless-broadband. However, the WiMAX | | | | them transmit at lesser speed. Third generation |
| technology faces some solid challenges ahead of it | | | | mobile network technologies will support around |
| can become commonly accepted by users. | | | | 115 Kbps. |
| Because WiMAX is based on IEEE 802.16 Standard | | | | As far as security is concerned in WiMAX |
| and HiperMAN, the IEEE and ETSI have each | | | | technology it uses PKI (Public Key Infrastructure) |
| become accustomed it's standard to take in | | | | authentication, which transmit via digital certificates |
| many of the other's essential characteristics. IEEE | | | | by identifying parties over trusted authorities. The |
| 802.16 standard partitioned its MAC (Medium | | | | IEEE 802.16 system encrypts data by using 56 bit |
| Access Control) layer into sub-layers that hold | | | | DES (Data Encryption Standard) keys. In the |
| some different transport equipments and | | | | meantime WiMAX network is extremely scalable |
| technologies, together with Ethernet, IPv4, IPv6 | | | | as it is simple to include broadcast channels to |
| and other asynchronous transfer mode. This | | | | offer extra bandwidth as required. |
| allows traders to use WiMAX technology it doesn't | | | | The expenditure of setting up wireless technology |
| matter about what technology they support for | | | | is significantly increases when the wireless |
| transmission. WiMAX technology has a wide | | | | services are supplied at higher frequencies as the |
| communication range up to 50 kilometers because | | | | line of sight constraints required the setting up of |
| principles allows WiMAX network to transfer data | | | | further antennas to cover up the equivalent |
| at higher rates and because of this move | | | | geographical area. The available frequencies for |
| towards use of directional antennas that | | | | new wireless standards such as IEEE 802.16 are |
| generates persistent radio signals. WiMAX base | | | | normally higher as some of the other wireless |
| station provide service to only 500 users at a | | | | technologies are more sought-after to lower |
| time not more than that just because to they are | | | | ranges that have been approved for other use. |
| sharing bandwidth and this factor may result in | | | | During the development of WiMAX technology, |
| lower date rates among. Technically every single | | | | the WiMAX Forum has strongly supported and |
| station will possibly provide communication an area | | | | encourage the WiMAX technology, which involves |
| inside a 10 miles radius. On the other hand WiFi | | | | a cluster of commercial leaders such as |
| has a range of only a few hundred feet while | | | | AT&T, Cisco, Samsung, Intel, and some |
| other third generation mobile networks have the | | | | others giants. The WiMAX forum group's |
| range of few thousand feet. | | | | workforce is comprised of many working groups |
| As compare to other wireless standards their | | | | that highly focused on regulatory, marketing, |
| address broadcastings over particular frequency | | | | technological characteristics. WiMAX product |
| range, WiMAX network allocates data | | | | certification program was extended by the |
| communication over several broad signal | | | | certification working group which intends to certify |
| frequency ranges. The capacity to work in | | | | interoperability among WiMAX products from |
| several ranges makes the most of the | | | | manufacturers internationally. |
| technology's ability to communicate above the | | | | |