top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

Advantages of Separating SAE gateway in LTE (SGW and PGW distributed)?

0 votes

I have been studying 4G LTE architecture past few days. I have to submit a report in college on the advantages of separating SAE gateway i.e. separation of SGW/PGW nodes.

Can anyone please guide me with a detailed answer.

posted Jul 5, 2015 by anonymous

Share this question
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

+1 vote

Telecom network is a Hierarchical network, technically you can have all logical node functionality in a single box i.e. eNodeB. But assume that all eNodeB have big capability then how much will be the cost as eNodeB are many (in millions) and close to the UE. Also the level of connectivity is required to connect them O(n^2) where n is the number of nodes.

So to reduce the cost we break the functionality and move the functionality step by step away from UE in this way we reduce the cost of implementation drastically and ultimately the call rate. And while the designing any telecom system it is one of the prime factor (along with other i.e. backward compatibility, data-rate, cabling etc).

This has been discussed in detail please check

answer Jul 6, 2015 by Salil Agrawal
Similar Questions
0 votes

As per LTE core network architecture, MME shares S11 interface with SGW and SGW has S5/S8 interface with PGW.
I went through Create Session Response message sent by SGW to MME and found PGW-C and PGW-U tunnel ids.
I want to know what MME does with these PGW-C and PGW-U tunnel Ids ?

+5 votes

Why we need SGW and PGW separately?
If it is for roaming then how it will be used at roaming condition?

+2 votes

I am unable to ping my EnB, PGW through ping application.. It says request timed out but thing is I am able to see Request-Reply packets in wireshark captures. Not getting any idea on what is going wrong.

Please suggest some inputs.

+2 votes

How P GW will select the S GW for Incoming Packet?
Consider two conditions
1. UE is in idle mode.