In June, WiMAX Forum announced the first ever commercial WiMAX interoperability and roaming trials at WiMAX Forum Congres 2009.The 14 ecosystem leaders who participating were operators, device manufacturers, equipment vendors, and clearing houses include Aicent, Alvarion, Bridgewater Systems, Cisco, Clearwire, Comfone, DigitalBridge Communications, Intel, iPass, Juniper Networks, MACH, Motorola, Syniverse and Transaction Network Services.

Additionally, the WiMAX Forum provided operators and vendors with all the information needed to understand WiMAX roaming and to launch roaming services at www.wimaxroaming.org , including technical specifications to follow when implementing roaming and a business agreement template to use with other operators.

WiMAX International or Global Roaming enables customers to automatically access their wireless services when travelling outside the geographical coverage area of their home network. This includes internet, e-mail, voice, video and other services available on the home network. Roaming provides the ability for you to access your wireless services by using the network of an operator that is not your home network operator. This is made possible by your home network operator agreeing with other operators to allow you to use your wireless services on their networks.

The networks of two or more operators must be connected to provide access to services and to enable the process of sharing usage information and to facilitate billing and financial settlement between operators. This can be achieved by operators establishing direct connections between their networks or by connecting their networks through a third party roaming exchange provider (WRX). One advantage of connecting through a third party provider is that this can enable an operator to connect with many other operators through a single connection. This can allow an operator to expand its footprint quickly.

Recently Clearwire signed MOU with WiMAX provider in Japan (UQ Communications) and WiMAX provider in Rusia (Yota) that identifies the objectives and activities each operator will perform towards the realization of establishing WiMAX roaming between the operators.

Under the MOU, Clearwire, UQ, and Yota plan to collaborate on business and technical aspects of their respective operations to define and institute the process necessary to support international roaming and to ensure the operators’ systems and devices are able to support roaming.

Also Clearwire will continue to work closely with its Global Alliance Partners which are YTL Communications of Malaysia, wi-tribe of Pakistan, Vee Telecom of Taiwan, and Global Mobile of Taiwan to ensure successful roaming once the partner networks are commercially deployed.

There will be posibility that Clearwire’s CLEAR subcriber can use HTC MAX 4G that now only can operate on Yota network in Russia.

Press Release 1, Press Release 2

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