top button
Flag Notify
    Connect to us
      Facebook Login
      Site Registration

Facebook Login
Site Registration

How to achieve the best QoS for VOLTE?

+5 votes

How I can achieve the best QoS for VOLTE but at the same time I can guarantee the other data services not affected , and also how to improve the MOS value for VOLTE?

posted Nov 22, 2013 by anonymous

Share this question
Facebook Share Button Twitter Share Button LinkedIn Share Button
Your question is not very clear to me, however I can see this is not dependent on the 3GPP rather implementation.

1 Answer

0 votes

It depends upon lots of factors to achieve the best Quality of Service for Voice in LTE.

Quality of Service will be dependent on these factors i have mentioned below:

Network Metrics:

  • Bit rate, delay, jitter, packet loss rate (PLR)
  • Power consumption

Application Metrics

  • Call setup delay, Call setup success rate
  • Failed calls, dropped calls, retransmission
    - MOS (Mean Opinion Score)

Determining factors:

  • Network Characteristics (Lossy link, low bandwidth, heterogeneous network)
  • Application Characteristics (Real time, Non-real-time)
  • User mobility (cell mobility, subnet mobility)

Factors Affecting Mean Opinion Score:

MOS can simply be used to compare between VoIP services and providers. But more importantly, they are used to assess the work of codecs, which compress audio and video to save on bandwidth utilization but with a certain amount of drop in quality. MOS tests are then made for codecs in a certain environment.

There are however certain other factors that affect the quality of audio and video transferred, as mentioned in that article. These factors are not supposed to be accounted for in MOS values, so when determining the MOS for a certain codec, service or network, it is important that all the other factors are favorable to the maximum for a good quality, for MOS values are assumed to be obtained under ideal conditions.

answer May 6, 2014 by Hiteshwar Thakur
Similar Questions
0 votes

I am wandering to check if QoS has really been implemented in LTE commercial networks. If yes,

i) Is this limited to VoLTE, or are there other application specific scenarios as well?
ii) Are operators already using extended QCIs in commercial networks?

Commercial deployment and application references will be highly appreciated?

+4 votes

What are the differences between UMTS QoS and LTE QoS concepts and mechanisms? also what parameters added to LTE QoS to overcome any shortage in UMTS QoS ?

+1 vote

In specification, I found two categories of QoS rules i.e., Signaled and Derived QoS rules. At a high level what I know that signaled QoS rules are the rules which are generated at core network and sent to UE as part of PDU SESSION ESTABLISHMENT. But I want to know what is derived QoS and where it is generated and used ?

+3 votes

Do you know following standard value of QoS of VoLTE?


Thanks in advance?

+1 vote

Which network node takes decision on QoS of a multicast bearer.

Contact Us
+91 9880187415
#280, 3rd floor, 5th Main
6th Sector, HSR Layout
Karnataka INDIA.