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LTE Architecture and LTE Attach

by on Sep 20, 2012

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Describes key network elements and interfaces of LTE architecture. The steps of LTE/EPC Attach procedure are also illustrated.

Describes key network elements and interfaces of LTE architecture. The steps of LTE/EPC Attach procedure are also illustrated.

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18 of 8 previous next Post a comment

  • kulunyar Major Tom Hi Ali,

    I am also from Turkey. Thank you for the slides, they are great. Especially the Identity parts with local examples:) I wonder if you are doing a research or working on LTE in telecomm. company.
    5 months ago
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  • SandeepGoyal10 Arc G at Sprint Hi Irfan, you did a good job explaining the concepts very clearly. I have one question in my mind, couldn't find clear diagram or answer yet, see if you can help me. I am looking for signalling flow diagram or steps when UE is turned on and goes to idle. You have covered overall attach procedure. But can you explain how UE goes through selecting the cell, reading/decoding all information on DL from PSS, SSS, MIB, SIBs etc. and then how it starts UL procedure to get authenticated. What is the last step when it completes everything and just remain idle. Please explain if it attaches to network and after authentication, it releases RRC connection, just looking for that sequence and diagram which goes from turning on to idle. Thanks!! 5 months ago
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  • VishalSingh20 Vishal Singh at Metro @KAMAR86 3gpp ko bhej do aap 8 months ago
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  • manojdev786 manojdev786 Hi Ali hope your are doing well .. i need to ask lots of thing so i share my mail id please drop me a test mail so i can contact you ( manojdev_21@yahoo.co.in ) 9 months ago
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  • amberfmubarak Amber Mubarak at Violinest @aliirfan04 Dear Ali,

    Thank you for you slide,

    I am interested in LTE netwrok and having some doubt about the LTE network structure. How can i contact you ser?

    thanks
    1 year ago
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  • aliirfan04 aliirfan04 Updated slides to v 3.0 (March 2013): Corrected attach procedure (slide 19) to add Step 4, eNB sending Contention Resolution Identity which was missing in v 2.0. Also renamed 'GTPC Tunnel' to 'GTPC session', as tunnel is only for GTP-U and not for GTP-C 1 year ago
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  • KAMAR86 KAMAR IQBAL SHAHI, researcher at sliet i get an idea about new architecture of LTE network. 1 year ago
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  • aliirfan04 aliirfan04 Updated slides to v 2.0.
    --added slide numbers (realized a few slides were missing in previous version)
    --Slide 19. Step 5 has two NAS messages, Attach Req/ PDN Connection Request
    --Slide 21. The attach accept and Active default bearer accept are send in UL Info Xfer RRC message (and not as part of RRC Reconfig Complete show in v 1.0). Steps 29, 30, 31 were missing in v1.0
    1 year ago
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LTE Architecture and LTE Attach LTE Architecture and LTE Attach Presentation Transcript