Control and Clock (CC) Module

Function

The CC module performs baseband unit control management and Ethernet switching, and provides the system clock. It provides the following functions:
 

• Implements the Ethernet switching function, switching service data flow and control data flow within the system.
• Implements Abis/Iub/S1/X2 interface protocol processing.
• Monitors the control and maintenance of the base station system, and provides the LMT interface.
• Performs software version management and programmable device management, and supports local and remote software upgrade.
• Monitors the operating status of each board in the system.
• Synchronizes with external reference clocks, including the IEEE1588 clock, GPS clock, and the clocks (2 Mbits and 2 MHz) provided by the BITS. The CC board can be configured as needed.
• Generates and transmits clock information as needed.
• Provides GPS signal interfaces and manages GPS receivers.
• Provides the unified reference clock for system operation and maintenance. The real-time clock can be calibrated.
• Reads hardware management information, including rack number, back-end type, slot number, board type, board version, and board function configuration information.
• Supports active/standby switchover.
• Provides maintenance functions for the MicroTCA module. The CC16B/CC17B/CCE1 provides the following functions:
• Supports Ethernet clock synchronization.
• Provides USB interfaces for software upgrade. There are four types of CC boards. For the performance specifications