Master Thesis:Voice over LTE

[aubidamax]

hi all

Table of Contents
Acknowledgements xi
1 Introduction 1
1-1 Solutions for Supporting Voice over LTE . . . . . . . . . . . . . . . . . . 1
1-1-1 Circuit Switch(CS) fallback . . . . . . . . . . . . . . . . . . . . . 1
1-1-2 Voice over LTE via IP Multimedia Subsystem (VoLTE) . . . . . . . 2
1-2 Motivation for the Thesis . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1-3 Problem Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1-4 Related Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1-5 Organization of the Thesis . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Background 7
2-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2-2 LTE Network Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2-3 QoS Architecture in LTE . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2-4 IMS Network Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2-5 Differentiated Services Architecture . . . . . . . . . . . . . . . . . . . . . 12
2-6 Scheduling Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2-6-1 Strict Priority Scheduling . . . . . . . . . . . . . . . . . . . . . . 13
2-6-2 Weighted Round Robin (WRR) Scheduling . . . . . . . . . . . . . 14
2-6-3 Weighted Fair Scheduling . . . . . . . . . . . . . . . . . . . . . . 14
3 Simulation Model 15
3-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3-2 Introduction to OPNET Modeller . . . . . . . . . . . . . . . . . . . . . . 15
3-2-1 Overview of LTE Model in OPNET . . . . . . . . . . . . . . . . . 15
3-2-2 Issues in LTE model . . . . . . . . . . . . . . . . . . . . . . . . . 18
3-3 Changes in LTE model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3-3-1 LTE S1 process model In E-Node B . . . . . . . . . . . . . . . . . 18
3-3-2 LTE S1 NAS Process model in EPC . . . . . . . . . . . . . . . . . 20
3-3-3 GTP Process model in E-Node B and EPC . . . . . . . . . . . . . 20
3-4 Simulation Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3-4-1 Mobile Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3-4-2 E-Node B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3-4-3 IMS Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3-4-4 Application Configuration . . . . . . . . . . . . . . . . . . . . . . 26
4 Results 27
4-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4-2 QoS parameters for Voice . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4-3 Scenario 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4-3-1 Description of the Scenario . . . . . . . . . . . . . . . . . . . . . 28
4-3-2 Analysis of results . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4-4 Scenario 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4-4-1 Description of the Scenario . . . . . . . . . . . . . . . . . . . . . 31
4-4-2 Analysis of results . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4-4-3 Impact on FTP traffic . . . . . . . . . . . . . . . . . . . . . . . . 35
4-4-4 Summary of the Results for Scenario 2 . . . . . . . . . . . . . . . 36
4-5 Scenario 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4-5-1 Description of the Scenario . . . . . . . . . . . . . . . . . . . . . 37
4-5-2 Analysis of results . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4-5-3 Impact on FTP traffic . . . . . . . . . . . . . . . . . . . . . . . . 40
4-5-4 Summary of results for Scenario 3 . . . . . . . . . . . . . . . . . . 42
4-6 Scenario 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4-6-1 Description of the scenario . . . . . . . . . . . . . . . . . . . . . . 43
4-6-2 Analysis of Results . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4-7 Comparison of Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5 Technical Details of Voice over LTE via IMS based solution - An Operator
Perspective 49
5-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5-2 VoLTE Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5-3 Options for integrating LTE with existing CS/PS networks . . . . . . . . . 51
5-3-1 Independent PS based solution . . . . . . . . . . . . . . . . . . . 51
5-3-2 Enhanced Single Radio Voice call continuity (SRVCC) / IMS Centralized
Services (ICS) . . . . . . . . . . . . . . . . . . . . . . . . 53

[stilloboy]

hi all

Table of Contents
Acknowledgements xi
1 Introduction 1
1-1 Solutions for Supporting Voice over LTE . . . . . . . . . . . . . . . . . . 1
1-1-1 Circuit Switch(CS) fallback . . . . . . . . . . . . . . . . . . . . . 1
1-1-2 Voice over LTE via IP Multimedia Subsystem (VoLTE) . . . . . . . 2
1-2 Motivation for the Thesis . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1-3 Problem Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1-4 Related Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1-5 Organization of the Thesis . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Background 7
2-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2-2 LTE Network Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2-3 QoS Architecture in LTE . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2-4 IMS Network Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2-5 Differentiated Services Architecture . . . . . . . . . . . . . . . . . . . . . 12
2-6 Scheduling Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2-6-1 Strict Priority Scheduling . . . . . . . . . . . . . . . . . . . . . . 13
2-6-2 Weighted Round Robin (WRR) Scheduling . . . . . . . . . . . . . 14
2-6-3 Weighted Fair Scheduling . . . . . . . . . . . . . . . . . . . . . . 14
3 Simulation Model 15
3-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3-2 Introduction to OPNET Modeller . . . . . . . . . . . . . . . . . . . . . . 15
3-2-1 Overview of LTE Model in OPNET . . . . . . . . . . . . . . . . . 15
3-2-2 Issues in LTE model . . . . . . . . . . . . . . . . . . . . . . . . . 18
3-3 Changes in LTE model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3-3-1 LTE S1 process model In E-Node B . . . . . . . . . . . . . . . . . 18
3-3-2 LTE S1 NAS Process model in EPC . . . . . . . . . . . . . . . . . 20
3-3-3 GTP Process model in E-Node B and EPC . . . . . . . . . . . . . 20
3-4 Simulation Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3-4-1 Mobile Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3-4-2 E-Node B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3-4-3 IMS Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3-4-4 Application Configuration . . . . . . . . . . . . . . . . . . . . . . 26
4 Results 27
4-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4-2 QoS parameters for Voice . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4-3 Scenario 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4-3-1 Description of the Scenario . . . . . . . . . . . . . . . . . . . . . 28
4-3-2 Analysis of results . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4-4 Scenario 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4-4-1 Description of the Scenario . . . . . . . . . . . . . . . . . . . . . 31
4-4-2 Analysis of results . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4-4-3 Impact on FTP traffic . . . . . . . . . . . . . . . . . . . . . . . . 35
4-4-4 Summary of the Results for Scenario 2 . . . . . . . . . . . . . . . 36
4-5 Scenario 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4-5-1 Description of the Scenario . . . . . . . . . . . . . . . . . . . . . 37
4-5-2 Analysis of results . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4-5-3 Impact on FTP traffic . . . . . . . . . . . . . . . . . . . . . . . . 40
4-5-4 Summary of results for Scenario 3 . . . . . . . . . . . . . . . . . . 42
4-6 Scenario 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4-6-1 Description of the scenario . . . . . . . . . . . . . . . . . . . . . . 43
4-6-2 Analysis of Results . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4-7 Comparison of Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5 Technical Details of Voice over LTE via IMS based solution - An Operator
Perspective 49
5-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5-2 VoLTE Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5-3 Options for integrating LTE with existing CS/PS networks . . . . . . . . . 51
5-3-1 Independent PS based solution . . . . . . . . . . . . . . . . . . . 51
5-3-2 Enhanced Single Radio Voice call continuity (SRVCC) / IMS Centralized
Services (ICS) . . . . . . . . . . . . . . . . . . . . . . . . 53



http://repository.tudelft.nl/assets/uuid:2a833efc-b55f-49bb-8965-a6c23605f621/Susan_Thesis_Library.pdf

Hi friend,
It looks as though the document @ the link above is not that whose table of contents you've displayed above, 'cos I just downloaded a 17-page document from the said link.
Please verify and correct the error.

[aubidamax]

Hi friend,
It looks as though the document @ the link above is not that whose table of contents you've displayed above, 'cos I just downloaded a 17-page document from the said link.
Please verify and correct the error.

i am sorry my friend.... here is full Thesis...

[Delovar]

I have read the thesis-very interesting. Wanted to ask: why did you choose to simulate Opnet, you can use other modeling packages, e.g. Ns2?

[jains]

Hi, I am very much interested to read through your Thesis. Could you kindly mail the same to me at: veet.lagan@gmail.com

Thanks in advance and with regards/ VL

[jafs86]

Good work!
I am starting my PhD in LTE tools and this is a very interesting topic.