Written by: Kabir Kasargod, Mike Sheppard and Marco Coscia

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Ericsson's CDMA2000 radio access network consists of a base station controller, radio base stations, a radio network manager and TEMS for CDMA2000. It uses open IOS/IS-2001-compliant interfaces to the mobile switching center (MSC) and packet-data service nodes (PDSN). A key feature of CDMA2000 1X packet-data service is that the packet-data connection between the mobile station and the network is always on.

This article discusses the CDMA2000 1X radio access network, the different services it supports, and how always-on, 144 kbit/s packet-data services are implemented. Concepts relating to 144 kbit/s packet-data service are presented from an end-user's perspective.

[First published in Ericsson Review no. 03, 2002]