WiBro MiMax and IEEE 802

WiBro WiMax and IEEE 802.16?

How does Wibro and WiMax relate to IEEE 802.16?

The IEEE 802.16 standard was designed to be as flexible as possible and has evolved as a set of air interfaces, where each physical layer specification is governed by the spectrum used and the associated regulations – but most importantly all have a common MAC layer.

Initially, the first 802.16 specifications concentrated on the needs of backhaul, however over time, through the work of the IEEE working groups, the standard developed to address customer demand for a system that was capable of providing high-speed data services to fixed, and later increasingly mobile user terminal equipment. It also evolved to address some of the issues apparent in the recently deployed WiFi (IEEE802.11a,b,g,h) systems. These largely related to increasing the service range of high-speed wireless access, and mitigating the degradation of QoS caused by the environmental effects. Higher-order modulation could offer higher data rate, but required optimal links to provide acceptable QoS, while lower orders of modulation could provide excellent QoS but only at lower data rates. The most optimal system was seen to be one which could adapt modulation and coding of the data, dependent on the channel characteristics and the type of data being transported.

In order to drive the IEEE efforts through to system deployment, the Worldwide Interoperability for Microwave Access (WiMAX) Forum was brought together by many of the companies involved in the 802.16 standardisation process. The forums aim is to help promote the standard and ensure that interoperability problems that had blighted previous cellular deployments can be avoided.

In Korea , a similar body was brought about, WiBro, to develop the 802.16 technology for their own unique market needs and to get broadband wireless networks deployed more rapidly. In November 2004 an agreement was made to ensure that WiMAX and WiBro would remain compatible and not diverge.

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WiBro WiMax and IEEE 802.16?

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