TD-SCDMA Video Telephony and Interoperability

By Oren Libis

In the IMTC 3G-324M Activity Group we handle interoperability for video telephony. The companies participating in this group focus on WCDMA, though other networks can be easily supported as well.

Recently, we have noticed that China is working more quickly on building its TD-SCDMA network building – most probably because of the Olympic Games planned for next year. TD-SCDMA also enables use of 3G-324M for video telephony like WCDMA – you get a 64kbps circuit switched connection in both directions of your call and you use it to transmit H.324 bit streams.

If we try to predict what’s in store for the TD-SCDMA industry, it seems like the IMTC can offer a lot to China in terms of experience with 3G-324M interoperability. We know the companies, the technology, and the facilities that test video telephony. We handled standardization when it was required and have seen more and more products conform to the 3G-324M standard and improve interoperability.

As TD-SCDMA embarks on its first steps as a live network, I am sure that vendors will face the same interoperability problems that we faced in the beginning of WCDMA. But this time, there are lessons to be learnt from our experience developing and deploying WCDMA handsets and services. My feeling is that interoperability between TD-SCDMA and WCDMA is also important.

I would like to invite all TD-SCDMA vendors out there to join us in the IMTC. Benefit from the vast experience we have accumulated and be part of our efforts to promote the use of 3G-324M in mobile handsets. There’s a lot of work to be done. We’re here to help.

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