Requirements and benefits of Co-TRM

The GSM+UMTS dual-mode controllers and the GSM+UMTS dual-mode base stations are deployed.

The GSM+UMTS dual-mode base stations share IP transmission resources over the Abis and Iub interfaces.

Benefits:

In case of a burst of GSM and UMTS services on the Multimode Base Station, the required transmission bandwidth increases abruptly. In such a case, the MBSC performs the control and thus effectively reduces the possibility of congestion.
For the bandwidth allocated to the GSM and UMTS services on the same Multimode Base Station, the MBSC uses appropriate allocation policies to increase the usage of the transmission bandwidth.