The Ericsson 5216 KDU137925/31 Baseband is upgraded and powerful baseband unit within the RBS6000 product portfolio. On this one board, it is able to handle twice as many cells as existing DUS baseband units; supports both LTE FDD and TDD, WCDMA and GSM modes simultaneously; and supports up to 80,000 subscribers.
The Baseband unit provides switching, traffic management, timing, baseband processing, and radio interfacing. Baseband 5216 is supported from software L15B, W16A, and G16B. The Baseband unit has the following functions: Timing function Loadable software Downlink baseband processing Uplink baseband processing IP traffic management Radio interface Transmission handling External synchronization Controlling power and climate of the RBS