0 votes
in Computer Networks by (user.guest)

1 Answer

0 votes
by (user.guest)
Best answer

Nowadays, 4G (fourth generation) mobile systems are widely used all over the world. There are different components in 4G technology such as:

• eNodeB


• P-GW

• S-GW

Role of eNodeB:

• The key role of eNodeB in 4G technology is to send the datagram’s between User Equipment (EU) and the Packet Data Network Gateway (P-GW) through the all-IP enhanced packet core.

• The UE datagram’s are encapsulated at the eNodeB and can be tunneled to the P-GW gateway. This tunneling may have Quality of Service (QoS) guarantees.

Role of MME:

• Mobility Management Entity (MME) is used to perform connection and mobility management on behalf of the User Equipments (UEs) resident on the cell.

• It also receives the UEs subscription information from Home Subscriber Servers (HSS).

Role of P-GW:

• The IP addresses for the UEs are allocated by the Packet Data Network Gateway (P-GW).

• It also performs the Quality of Service (QoS) enforcement.

• It also performs datagram encapsulation and decapsulation when the datagram’s are forwarding to or from the UEs.

Role of S-GW:

• Serving Gateway (S-GW) is said to be data-plane mobility anchor point because all the traffic of UEs are passed through S-GW.

• It can also perform billing function and lawful traffic interception.

If you found this answer helpful, please upvote and share with other students in your network.

Related questions

Welcome to CPEN Talk
Solution-oriented students of computer engineering on one platform to get you that


Chuck Norris doesn't use reflection, reflection asks politely for his help.