You are here

WiMax Competing Technologies



As we learnt in the previous pages, that WiMax was formed to complement Bluetooth and WiFi technologies, let us look at the differences in each of these:

 

Parameters

WiMax

WLAN

Bluetooth

Frequency

2 ~V 11 GHz

2.4 GHz

Varies

Range

~31 miles

~100 metres

~10 metres

Data Transfer Rate

70mbps

11 ~V 55mbps

20 ~V 55mbps

Users

1000s

> 10

> 10

Table 1 ~V Difference between WiMax, WLAN and Bluetooth 

The 802.11 is based on a distributed architecture, whereas, WiMax is based on a centrally controlled architecture. In this the scheduler residing in the Base station (BS) has the complete control of the wireless media access. WiMax can support multiple connections conforming to a set of QoS parameters and provides the packet classifier ability to map the connections to many user applications and interfaces.

WiFi and WiMax may end up complementing each other, but a new technology, IEEE 802.20, might give them both a run for their money. IEEE 802.20 standard like the 802.16 is aimed at wireless high-speed connectivity to mobile consumer devices like cellular phones, PDAs and laptops. It will operate in the 500 MHz ~V 3.5 GHz and is led by Flarion Technologies and ArrayComm.