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Most voted questions under tag mme

+11 votes
2 answers
LTE: In RRC connected mode, when an UE moves from one cell to another cell what messaging happen ?
posted Feb 7, 2014 by Vimal Kumar Mishra
  • lte
  • mme
  • enodeb
  • rrc
  • s1ap
+8 votes
1 answer
LTE: Difference between "SNOW 3G" and "AES" algorithms ?
posted Feb 1, 2014 by Vikram Singh
  • lte
  • security
  • mme
+8 votes
1 answer
LTE: Why MME ask for multiple authentication vectors from HSS ?
posted Jan 31, 2014 by Ganesh Kumar
  • lte
  • mme
  • hss
  • authentication
+8 votes
1 answer
LTE: Why UE can connect to maximum one SGW at a time ?
posted Oct 26, 2013 by Vikram Singh
  • lte
  • enodeb
  • epc
  • sgw
  • mme
+7 votes
1 answer
LTE X2 Handover: What is the necessity of presence of GUMMEI in handover request message ?
posted Feb 13, 2014 by Vimal Kumar Mishra
  • x2
  • lte
  • enodeb
  • mme
+7 votes
0 answers
LTE: What does mean by horizontal and vertical keys generation ?
posted Feb 1, 2014 by Neeraj Mishra
  • lte
  • authentication
  • mme
+7 votes
2 answers
LTE: What does the difference between CLR and DSR command over S6a interface ?
posted Jan 9, 2014 by Harshita
  • lte
  • hss
  • mme
+6 votes
2 answers
LTE: How a LTE UE come to know whether LTE network supports IMS call or not ?
posted Jul 28, 2016 by Vikram Singh
  • lte
  • ims
  • enodeb
  • mme
+6 votes
1 answer
What will happen if APN configuration is not present in the Entity, say HSS ?
posted Mar 24, 2014 by Kuldeep Apte
  • mme
  • hss
  • diameter
  • s6a-interface
  • lte
+6 votes
1 answer
LTE: What does mean by ISR and how it works ?
posted Feb 12, 2014 by Harshita
  • lte
  • mme
+6 votes
2 answers
LTE: Does MME trigger Update location procedure as part of Handover procedure or after Handover ?
posted Jan 9, 2014 by Vimal Kumar Mishra
  • handover
  • lte
  • mme
  • hss
+6 votes
1 answer
LTE: How trace session procedure works for lte core network ?
posted Jan 8, 2014 by Harshita
  • lte
  • gtp
  • pgw
  • sgw
  • mme
+6 votes
2 answers
LTE: Why SGSN has interfaces with MME and SGW only not with PGW ?
posted Nov 25, 2013 by Vikram Singh
  • lte
  • epc
  • mme
  • sgw
  • pgw
+6 votes
3 answers
What is the role of MME in LTE technology?
posted Nov 24, 2013 by Harshita
  • lte
  • epc
  • mme
+5 votes
0 answers
LTE: Why presence of Tracking Area Identity (TAI) and E-UTRAN CGI (ECGI) IEs is mandatory in Uplink NAS Transport ?
posted May 16, 2018 by Vimal Kumar Mishra
  • lte
  • mme
  • enodeb
  • s1ap
  • nas
+5 votes
2 answers
When does a MME trigger UE context modification procedure towards an eNodeB for an UE ?
posted Jan 24, 2016 by Harshita
  • lte
  • enodeb
  • mme
  • s1ap
+5 votes
0 answers
Who does radio bearer mapping during UTRAN to E-UTRAN handover where source RNC is pre-release 8
posted Dec 28, 2015 by anonymous
  • lte
  • mme
  • s1ap
  • enodeb
+5 votes
0 answers
How does presence of "Handover Restriction List" information impact on subsequent handover ?
posted Mar 30, 2015 by Harshita
  • lte
  • mme
  • enodeb
  • s1ap
  • x2
+5 votes
1 answer
Does all MME belong to a pool have connection with eNodeB belongs to the same pool ?
posted Mar 27, 2015 by Vimal Kumar Mishra
  • lte
  • mme
  • enodeb
+5 votes
3 answers
Difference between attach and service request message ?
posted Nov 12, 2014 by Neeraj Mishra
  • lte
  • mme
  • ue
  • nas
+5 votes
1 answer
Why does MME send "Modify bearer request" message to SGW as part of attach procedure?
posted Oct 31, 2014 by anonymous
  • lte
  • mme
+5 votes
1 answer
Why UE sends RRC Connection Request followed by EUTRA triggered RRC Connection Release?
posted Oct 29, 2014 by Nagaraja Sadar
  • lte
  • enodeb
  • ue
  • mme
+5 votes
0 answers
What can be done to minimize chances of MME overload conditions?
posted Oct 17, 2014 by Varun Kumar
  • lte
  • mme
+5 votes
3 answers
LTE : How does E-RAB setup procedrue work ?
posted May 5, 2014 by Neeraj Mishra
  • lte
  • enodeb
  • mme
  • ue
+5 votes
1 answer
LTE S1-AP handover : How does a source mme find out the target mme as part of MME relocation based handover ?
posted Feb 21, 2014 by Vimal Kumar Mishra
  • lte
  • handover
  • mme
  • enodeb
+5 votes
1 answer
LTE: Difference between network triggered and UE triggered service request ?
posted Jan 30, 2014 by Ganesh Kumar
  • lte
  • nas
  • mme
  • ue
+4 votes
2 answers
LTE: Does the encoding steps for PLMN vary in case of two and three digits MNC at eNodeB ?
posted Jun 1, 2018 by Vimal Kumar Mishra
  • lte
  • enodeb
  • mme
  • s1ap
+4 votes
1 answer
Why MME is sending paging with TMSI why not it is sending with GUTI?
posted Feb 7, 2018 by Sakshi Rai
  • lte
  • mme
  • enodeb
  • ue
  • paging
+4 votes
2 answers
Can MME send paging message without TMSI ID?
posted Feb 7, 2018 by Sakshi Rai
  • lte
  • mme
  • enodeb
  • ue
  • paging
+4 votes
1 answer
When does MME execute Identification procedure ?
posted Jan 31, 2016 by Neeraj Mishra
  • lte
  • mme
+4 votes
1 answer
Why does HSS generate multiple authentication vectors during the authentication procedure ?
posted Dec 26, 2015 by Vikram Singh
  • lte
  • mme
  • authentication
  • hss
  • diameter
+4 votes
1 answer
Does the S1-handover procedure always has to be change in MME?
posted Dec 24, 2015 by anonymous
  • lte
  • handover
  • mme
+4 votes
0 answers
3G to 4G Handover without S6d interface?
posted Sep 15, 2015 by Tribhuwan
  • lte
  • handover
  • mme
+4 votes
1 answer
LTE: What does "Minimum Time to MBMS Data Transfer" IE signify in the MBMS Session Start Request message ?
posted Aug 8, 2015 by Vikram Singh
  • lte
  • mbms
  • mce
  • mme
+4 votes
2 answers
What are messages transferred between MME-HSS?
posted Mar 25, 2015 by anonymous
  • lte
  • mme
  • hss
+4 votes
1 answer
How target enodeb will validate the new incoming user during x2 or s1 handover?
posted Mar 24, 2015 by Srinivas Sambari
  • lte
  • handover
  • mme
  • enodeb
  • ue
+4 votes
0 answers
What is synchronization failure between MME and HSS During Authentication procedure?How we achieve it?
posted Mar 19, 2015 by Gnanendra Reddy
  • lte
  • hss
  • mme
  • diameter
+4 votes
1 answer
Why Identity Request Need to be perform by MME after successful Authentication and Security Mode Complete...?
posted Mar 17, 2015 by Srinivas Sambari
  • lte
  • mme
  • ue
  • nas
  • enodeb
+4 votes
1 answer
What happen when SGW & MME gets changed while doing handover for an UE ?
posted Feb 1, 2015 by Harshita
  • lte
  • mme
  • sgw
  • handover
  • ue
+4 votes
0 answers
SGW behaviour after a Downlink data notification failure?
posted Jan 26, 2015 by anonymous
  • lte
  • mme
  • sgw
+4 votes
2 answers
Why MME UE S1AP ID is needed ?
posted Nov 17, 2014 by anonymous
  • lte
  • mme
  • s1ap
+4 votes
2 answers
In what are all scenarios other than CS and PS incoming calls/sessions, MME can initiate paging for an UE?
posted Nov 9, 2014 by anonymous
  • lte
  • mme
+4 votes
1 answer
What may be possible reasons to reject the tracking area update request for an UE in a lte network ?
posted Oct 22, 2014 by Harshita
  • lte
  • mme
  • ue
  • nas
+4 votes
2 answers
When Path Switch Request Message is sent from eNodeB to MME?
posted Oct 7, 2014 by Varun Kumar
  • lte
  • mme
  • enodeb
+4 votes
1 answer
What does relay node indicator IE presence in Initial UE message signify ?
posted Oct 7, 2014 by Harshita
  • lte
  • s1ap
  • enodeb
  • mme
+4 votes
3 answers
Is it possible to know from UE logs that which handover has been occurred either S1-based or X2-based ?
posted May 13, 2014 by Rahul Vaidya
  • lte
  • handover
  • ue
  • enodeb
  • mme
+4 votes
0 answers
LTE: Why does "PLMN-IdentityList2" IE within the "measResults" ranges from 1 to 5 PLMNs ?
posted Apr 21, 2014 by Harshita
  • lte
  • enodeb
  • mme
  • measurement
  • handover
+4 votes
0 answers
LTE: Can someone please share wireshark logs for successful handover with MME and SGW relocation ?
posted Apr 19, 2014 by Vimal Kumar Mishra
  • lte
  • handover
  • mme
  • sgw
  • enodeb
+4 votes
1 answer
LTE: When UE sends NAS message to MME before sending rrc connection reconfiguration complete to the eNodeB ?
posted Apr 9, 2014 by Vimal Kumar Mishra
  • lte
  • mme
  • enodeb
  • ue
  • nas
+4 votes
2 answers
LTE: Why does "UE Time Zone IE" send from MME to PGW via SGW ?
posted Feb 23, 2014 by Ganesh Kumar
  • lte
  • mme
  • sgw
  • pgw
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