A telecommunications standard designed for the wireless transmission of data through radio signals, primarily for broadband Internet access. It is an evolution of the CDMA2000 (IS-2000) standard, supporting high data rates and deployable alongside a wireless carrier's voice services. UMB uses advanced multiplexing techniques, including code-division multiple access (CDMA) and time-division multiplexing (TDM), to maximize throughput.
Technical Overview
UMB is part of the CDMA2000 family of standards and has been adopted by many mobile phone service providers, particularly those previously employing CDMA networks. It is also used on the Globalstar satellite phone network.
- Bandwidth: An UMB channel has a bandwidth of 1.25 MHz, the same bandwidth size that IS-95A (IS-95) and IS-2000 (1xRTT) use, though the channel structure is very different.
Deployment and Compatibility
UMB is designed to be backward compatible with existing CDMA networks, allowing for a smooth transition to higher data rates and improved performance. This compatibility is crucial for service providers looking to upgrade their infrastructure without disrupting existing services.
- Backward Compatibility: UMB is designed to work alongside existing CDMA networks, ensuring that service providers can upgrade their infrastructure without disrupting current services.