CDMA NETWORK EVOLUTION TO CDMA2000

CDMA-based wireless networks, which were originally deployed in North America, are now also a common standard in Asia and other parts of the world. Existing CDMA service providers are already migrating their wireless networks to 2.5G architectures, with a migration path to pure-IP 3G wireless networks defined by the 3G Partnership Program 2 (3GPP2).

The diagram below depicts a generalized CDMA-based 2.5G network, called the CDMA2000 1X network architecture. The radio access network is based on digital circuit-based CDMA wireless technology, but (as with GPRS) the architecture has an IP packet-based service overlay network. The MRFP delivers media processing functions on behalf of the AS, and performs the media functions on the RTP streams flowing to/from the MGW.

Convedia Media Server in a CDMA2000 1X Deployment

In parallel with GSM evolution, CDMA architectures are evolving to the pure-IP 3G architecture (shown below) with an IP-based radio interface known as CDMA2000 1X-EV. The MRFP delivers media processing functions on behalf of both the AS and the Session Control Manager (SCM), and performs the media functions on the RTP streams flowing to/from the MGW and the Border Router. With IP connectivity directly to the wireless device using CDMA2000 1X-EV, a broad range of enhanced services will be delivered economically to a growing subscriber base of wireless users with end-to-end IP connectivity.

Convedia Media Server in a CDMA 1XEV Deployment