top button
Flag Notify
    Connect to us
      Facebook Login
      Site Registration Why to Join

Facebook Login
Site Registration

LTE: which node of the network initiate bearer creation for voice call ?

+1 vote
68 views
LTE: which node of the network initiate bearer creation for voice call ?
posted Jan 21 by Rupam

Share this question
Facebook Share Button Twitter Share Button Google+ Share Button LinkedIn Share Button Multiple Social Share Button

1 Answer

+1 vote

Hi Rupam,
First, UE establishes connection with IMS PDN using the PDC connectivity procedure. As part of PDN connectivity procedure, UE gets a new IP address. Once PDN connectivity procedure gets completed, UE starts with SIP signalling (all the SIP signalling messages exchange over new IMS bearer). As part of SIP signalling, application server based informs to PCRF regarding QoS requirement of new application and as resultant, PCRF initiates dedicated bearer creation with QCI "1". This QCI bearer 1 carries voip packets.
In short, PCRF is the node in LTE network which initiates dedicated bearer creation for the voice call.

answer Jan 22 by Harshita
Similar Questions
+4 votes

Is there any option is the LTE handset by which when UE makes a voice call it goes through legacy network 2G/3G and for data it uses LTE network assuming LTE network supports LTE data/VoLTE/Legacy Network ?

+1 vote

Which of the network node initiates dedicated bearer creation for the VoLTE call ?

+2 votes

Whenever a new technology comes it provides better user experience. Since the role out of a new technology requires a lot of money investment. It makes services expensive for users. For what reasons an operator would like to deploy VoLTE when it is already have Circuit switch fall back for voice services. In India, Reliance Jio is a new player in telecom market that's why it is rolled out VoLTE since it was not having any legacy technology to provide voice services. What about others ? Are they deploying VoLTE just for the namesake that they also support VoLTE or really there is a need for that ?

Contact Us
+91 9880187415
sales@queryhome.net
support@queryhome.net
#280, 3rd floor, 5th Main
6th Sector, HSR Layout
Bangalore-560102
Karnataka INDIA.
QUERY HOME
...