The IEEE 802.16 standard 802.11 802.1 6 Range Sub 300 ft (Add access points for greater coverage. Access point same as terminal.) Up to 30 miles Typical cell size of 4-6 miles Coverage Optimized for indoor performance. Outdoor NLOS performance. Standard support for advanced antenna technology Scalability Channel bandwidth is wide (20 MHz) and fixed Flexible use of available spectrum. Bit Rate Up to 54 Mbs in 20 MHz channel Up to 100 Mbs in a 20 MHz channel
This is modern wireless technology of computers connection to the network or connecting them to the internet. Just with the help of this technology the internet gets mobile and gives the user the opportunity to be mobile: both in the limit of a room and worldwide. Technology provides simultaneous work in the network of several dozens of the active users; speed of information transmission for the final subscriber can reach 108Mbit/sec. Wi-Fi access is available for note-book and personal pocket computer, web-camera or wireless IP-telephone owners equipped with the proper module meeting the IEEE 802.11 standard.
The network is based on wireless Wi-Fi technology which does not require using the telephone or any other lines of connection based on wires. Data transmission is carried out through air on a very high frequency which doesn’t influence a man and does not create hindrances of electronic equipment.
Possibility of some mobility.
Since you are not tied up to wires, you can easily change location of your computer not worrying about connection withdrawal (in the cover area of access point).
High-speed access to internet
A high-speed access to internet is offered for network subscribers, speed of channel is 108Mbit/sec. Meanwhile, there is no necessity for ringing up or connection defining, etc. You are always on-line and to be connected to internet it is just enough to open your browser.
Wi-Fi is based on IEEE 802.11 standard where as WiMAX is based on IEEE 802.16. However both are IEEE standards.
Wi-Fi typically provides local network access for around a few hundred feet with speeds of up to 54 Mbps, a single WiMAX antenna is expected to have a range of up to 40 miles with speeds of 70 Mbps or more. As such, WiMAX can bring the underlying Internet connection needed to service localWi-Fi networks.
Wi-Fi is intended for LAN applications, users scale from one to tens with one subscriber for each CPE device. Fixed channel sizes (20MHz).
WiMAX is designed to efficiently support from one to hundreds of Consumer premises equipments (CPE)s, with unlimited subscribers behind each CPE. Flexible channel sizes from 1.5MHz to 20MHz.
WiMAX (Worldwide interoperability for Microwave Access) is a broadband wireless access technology that can deliver data speeds much higher than 3G, and at chepaer rates. Till recently, 3G has been the only way to deliver broadband connectivity to mobile phones.
A typical mobile WiMAX network can deliver up to 15 Mbps within a 3-km cell radius, compared to 3G speeds of 2-2.4 Mbps (for CDMA 2000 and WCDMA). Or in other words, if you want to download a full-length movie onto your mobile, it will take 64 minutes on a 3G connection, but less than nine minutes with WiMAX.
3G could drive a variety of applications on your handheld key among these will be video telephony and video conferenceing, mobile TV, interactive gaming, streaming video, music downloads and mobile TV. But WiMAX is not just about data. Now, there is a greater push offering voice also on a WiMAX platform. Many, including Nortel, are conducting trials of mobile WiMAX.
3G has the potential to disrupt the Indian telecom business model as WiMAX spectrum licences could be far cheaper than 3G or even the GSM or CDMA liceces that have been awarded so far. Globally, this has been the case. In Singapore, for instance, the highest amount paid for broadband wireless spectrum was $2.27 million, compared to $100 million for 3G. According to telecom regulator Trai's recommendations, the minimum bid amount for a pan India WiMAX presence is Rs.142 crore. Compare this with the Rs.1,050 crore base price for similar deployment of 3G services almost eight times higher.
Although Wimax technology will be capable of providing VOIP services, 3G technologies will remain much more efficient in the use of bandwith for voice transport. Wimax providers have the ability and are allowed to offer services at high levels of mobility.