top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

LTE: Why does "UE Time Zone IE" send from MME to PGW via SGW ?

+4 votes
1,303 views
LTE: Why does "UE Time Zone IE" send from MME to PGW via SGW ?
posted Feb 23, 2014 by Ganesh Kumar

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

2 Answers

+2 votes

operator will do performance analysis by received UE Time Zone/ULI in CDR's (on Rf/Ro interface). Hence MME will send UE time zone value to SGW and PGW. if SGW/PGW will generate CDR(Charging Data Record) then SGW/PGW should include UE Time Zone value in this CDR and send it to offline/online charging server.so, whenever time zone changes, then MME will inform this change to SGW/PGW on next S11&S5S8 message.

answer Jun 27, 2018 by Althi Rajeswararao
0 votes

Question is not clear, but if I got it then it's very simple.

Because there is no other way. Check how the network is built.

answer Mar 20, 2014 by Bart Barton
Similar Questions
+1 vote

Hi Friends,
I saw somewhere that MME will also do a DNS query for P-GW. As i know S-Gw will do a query for P-Gw address. Is there any situation that MME will do a query for P-GW address using APN? and after this query how MME will use the P-Gw Address.

and is there any possibility of Doing DNS query by P-Gw to get any other nodes Ips and under what conditions P-Gw will do a DNS query?

+1 vote

GTP tunnel id is a 32-bit long value over one IP address combination. Suppose there are two nodes A and B which has IP addresses X and Y respectively. Is it possible when first GTP tunnel id range gets exhausted then both the nodes starts using different IP address combination and again GTP tunnel id range can be re-used ? If it is impossible then what could be the reason ?

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 ?

...