Recent posts under tag nas

0 votes

1 answer

Is nas security mandatory procedure while doing attach ?

posted Dec 1, 2020 by anonymous

–1 vote

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Does NAS messages affected while doing Hand over procedure in LTE or 5G ?

posted Dec 1, 2020 by anonymous

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LTE: APN included in PDN Connectivity procedure.

posted Mar 12, 2020 by anonymous

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LTE: How does up-link traffic flow template work at UE side ?

posted Aug 9, 2018 by Harshita

+5 votes

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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

+1 vote

1 answer

LTE: What is the use of different types of tracking area list for an UE provided by MME ?

posted May 15, 2018 by Harshita

+1 vote

1 answer

What is on demand system information transfer in 5G

posted Mar 5, 2018 by Mallikharjuna Reddy

+1 vote

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5G: What is multiple active NAS connection concept in 5G network and when an UE would have such multiple connection ?

posted Feb 17, 2018 by Harshita

+1 vote

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5G: What is the significance of new terms "SUCI" and "SUPI" ? And also which all places both are used ?

posted Feb 13, 2018 by Harshita

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5G: How does 5G Authentication and Key Agreement (5G-AKA) work ?

posted Feb 13, 2018 by Harshita

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5G: Which all NAS messages considered mandatory to be integrity protected ?

posted Feb 13, 2018 by Harshita

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LTE: Due to which reasons, UE enables ESM information transfer (EIT) flag in PDN connectivity request message ?

posted Jan 22, 2018 by Rupam

+1 vote

2 answers

LTE: What is the purpose of sending Bearer Resource Allocation Request to MME from UE ?

posted Dec 3, 2017 by Ganesh

+3 votes

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LTE: On what basis MME prepare list of TAI for an UE when it attach to the network ?

posted Jul 20, 2017 by Harshita

+1 vote

1 answer

LTE: Difference between default and dedicated bearer and on what basis it is decided which one to establish ?

posted Jun 12, 2017 by Vikram Singh

+1 vote

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What is TFT?Is it an Id or is it derived from the IP header of the packet(i.e. type of service field)?

posted May 16, 2017 by Bharat Kumar

–2 votes

2 answers

Why network triggers identity request after authentication procedure ?

posted Apr 11, 2017 by Sakshi Rai

+1 vote

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LTE: Why security header type is defined "1100" only for a special NAS message i.e Service Request message ?

posted Sep 28, 2016 by Neelam

+3 votes

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Clarification on security mode procedure in LTE

posted Sep 21, 2016 by Sachidananda Sahu

+2 votes

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Is there any scenario where the Tracking area update request sent be the ue will not be integrity protected?

posted Aug 26, 2016 by Lavanya L

+3 votes

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TAU procedure in Connected mode and Idle

posted Aug 9, 2016 by Arijit Chakraborty

+2 votes

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LTE: What MME does when it receives indication from UE saying it supports LPP (LTE Positioning Protocol) ?

posted Aug 6, 2016 by Vikram Singh

+1 vote

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What are the mobility scaling factors- sf-high and sf-medium?

posted Jun 22, 2016 by Sivakumar.d

+2 votes

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Bearer resource allocation reject with cause request rejected by Serving GW or PDN GW

posted Feb 24, 2016 by Pankaj Kumar

+2 votes

1 answer

LTE: What is the difference between Algo ID and Algo distinguisher while generating security keys ?

posted Feb 19, 2016 by Harshita

+2 votes

1 answer

LTE: When does an UE trigger Tracking Area complete message towards the network ?

posted Feb 7, 2016 by Vikram Singh

+2 votes

1 answer

LTE: How an UE come to know whether it has to perform periodic TAU or not ?

posted Jan 26, 2016 by Harshita

+3 votes

1 answer

What is EXTENDED SERVICE REQUEST for packet services (ESRPS) in lte ?

posted Jan 5, 2016 by Saurabh Bhardwaj

+1 vote

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LTE : What does NAS Key Set Identifier convey ?

posted Dec 24, 2015 by Ganesh Kumar

+4 votes

1 answer

LTE: How does authentication procedure work for the LTE network and why it is required ?

posted Dec 22, 2015 by Vikram Singh

+3 votes

1 answer

LTE: How TAU procedure can differ for different eNodeBs/cells of a tracking area ?

posted Dec 14, 2015 by Ganesh Kumar

+1 vote

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What is difference between Service request and extended service request?

posted Nov 5, 2015 by Gnanendra Reddy

+3 votes

2 answers

LTE: How does TAU procedure work ?

posted Nov 4, 2015 by Harshita

+1 vote

4 answers

Why we need Two types of Security modes (NAS,AS) in LTE

posted Oct 9, 2015 by Mallikharjuna Reddy

+4 votes

1 answer

How can we send multiple UE paging records?

posted Sep 30, 2015 by Badikela Mahesh

+3 votes

2 answers

LTE: When does a network prefer periodic tracking area update from an UE ?

posted Sep 29, 2015 by Vimal Kumar Mishra

+2 votes

1 answer

LTE: What does mean by attach in S101 mode ?

posted Sep 17, 2015 by Harshita

+3 votes

2 answers

In the paging message send from MME to eNB , which paging ue identity is used ?

posted Jun 4, 2015 by Sachidananda Sahu

+2 votes

2 answers

Which NAS message is sent by UE to establish a dedicated bearer in LTE network ?

posted May 31, 2015 by Harshita

+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

+3 votes

2 answers

Why does authentication procedure need to complete before security activation ?

posted Mar 10, 2015 by Harshita

+2 votes

1 answer

List of NAS messages available in LTE?

posted Feb 26, 2015 by Gnanendra Reddy

+2 votes

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How does alert procedure work for non-EPS services for an UE in lte network ?

posted Feb 11, 2015 by Vikram Singh

+3 votes

2 answers

How does paging procedure work for an UE for SMS service in a lte network ?

posted Feb 11, 2015 by Vikram Singh

+3 votes

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Why there is 2 level of security as NAS and AS in LTE?

posted Feb 6, 2015 by Rajib Samui

+3 votes

1 answer

How does network behave when UE sends TAU to a new/different MME ?

posted Feb 1, 2015 by Harshita

+5 votes

3 answers

Difference between attach and service request message ?

posted Nov 12, 2014 by Neeraj Mishra

+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

+2 votes

1 answer

In which scenario, a MME can reject the service request message receives from an UE ?

posted Oct 21, 2014 by Harshita

+5 votes

1 answer

Difference between NAS level congestion control and APN based congestion control ?

posted Oct 18, 2014 by Harshita