What network elements does the broadband trunking communication system include?

MME mobility management entity, SGM service gateway, PGWPDN gateway, according to the query CSDN blog network display.

1.MME is responsible for NAS security, idle mode processing and EPS bearer control, mainly responsible for signaling interaction between UE and core network.

2.SGM is responsible for transmitting user IP packets, and other 3GPP technologies such as GPRS and UMTS are used as external interfaces.

3.PGW is responsible for user IP address allocation and service QoS guarantee, and charges traffic according to PCRF rules.