CDMA2000 1xEV-DO Release 0 (Rel. 0) (TIA-856) is designed and optimized to deliver data-centric broadband network services. It supports high-speed broadband downlink data speeds up to 2.4 Mbps in a 1.25 MHz radio channel. Commercially launched in 2002, it was the first mobile broadband technology to be deployed worldwide.
Key features of Rel. 0 include:
- Broadband Data: Supports a peak data rate of up to 2.4 Mbps in the forward link and 153 kbps in the reverse link within a single 1.25 MHz FDD channel. In commercial networks, Rel. 0 delivers an average data throughput of 300-700 kbps in the forward link and 70-90 kbps in the reverse link. It achieves an aggregate data throughput of up to 3,150 kbps in the downlink and 900 kbps in the uplink within a 5 MHz FDD channel.
- Spectral Efficiency: 0.630 bit/sec/MHz in downlink and 0.180 bit/sec/MHz uplink over a 5 MHz FDD channel.
- Average Latency: 110 msec node-to-node ping, RTT
- User Experience: Offers an "always on" user experience and data transfer speeds in both directions comparable to existing DSL networks
- IP Connectivity: Leverages the existing suite of Internet Protocols (IP), and hence supports IP-based network connectivity and software applications
- Applications: Supports broadband data applications, such as broadband Internet or VPN access, MP3 music downloads, 3D gaming, TV broadcasts, FM radio, video and audio downloads. In many countries, it has been deployed as a DSL substitute.
- Backwards Compatibility: The evolutionary nature of 1X and EV-DO enables a very high degree of hardware reuse and offers flexibility in how that hardware can be employed. To complete the upgrade from 1X to EV-DO Rel. 0, the only modification to the CDMA2000 network is the addition of a new EV-DO channel card in the 1X base station and increasing the capacity of the Packet Data Serving Node (PDSN). In most cases, CDMA2000 1xEV-DO devices include a CDMA2000 1X modem to be compatible with CDMA2000 1X and cdmaOne systems.