5g call flow diagram

5G NR
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1

I need 5g call flow diagram for STANDALONE

  1. Cell search
  2. Call initial access
  3. Random access
  4. Rrc procedures
  5. Handover ( intra, inter frequency)
  6. Pdu sessions

Admin note: this post was updated with image below.

5g call flow diagram
5g call flow diagram1075×781 80.3 KB

2
  1. Cell search
  2. Random access
  3. Call initial access
  4. Rrc procedures

image
image1113×850 142 KB

  1. Handover ( intra, inter frequency)
    1. Intra freq Inter gNB HO flow in detail
    image
    image624×804 77.2 KB

    2. Intra freq Inter gNB HO flow in detail
    image
  2. Pdu sessions
    image
3

Thanks ameen… In 5G DRB type is same as 4G . Since 5G Qos flow is used what are the types of DRB in 5G

4

Anyone having detailed 5G call flow?

5

Yes there is on Eventhelix → just check Favs.

6

For eventhelix we have to click on every message one by one to check for important IE’s.

I was specifically looking for a doc with important IE’s on every message.

7

5G Architecture is a change to cloud from dedicated hardware (specialized hardware). 5G core network moves from 3/4G dedicated hardware to cloud or virtual machines. Radio also moves from dedicated hardware BaseBand Units to CloudRAN or OpenRAN.

Now Mobile Network Operators are not constrained to a single vendor.

Mobile operators can also roll out features faster with a simple software upgrade.

Read article now: :point_down:

11

here is a call flow diagram from a real VoNR call.

Snipaste_2024-05-15_13-52-01
Snipaste_2024-05-15_13-52-011920×945 147 KB

nearly 500 messages in total, you can see all the messages at this site:
http://shark.haohandata.com:20280/work-bench/flow/1709775421010101290

13

Thank you for posting this.
My colleagues worked really hard to compile the data so that it will makes sense for the readers.

14

You can check this detailed step-by-step 5G UE Registration / call flow guide from Techlte World :

:link: 5G UE Registration and AMF Selection Criteria

Also sharing a helpful video explanation:
:movie_camera: 5G Call Flow Video Explained

It covers RACH, Registration Request, Authentication, Security setup, PDU Session establishment, and complete UE registration flow in 5G SA.