step by step lte call flow tutorial

Title page

Alcatel-Lucent Long Term Evolution (LTE)

End-to-End Solution | Release LE5.0

Call Flows with Performance Measurements

Technical Description

9YZ-03745-9408-TQZZA

Issue 0.03 | May 2012

Alcatel-Lucent – Proprietary

Use pursuant to applicable agreements


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Legal notice

Legal notice

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Alcatel-Lucent without its written authorization.

Not to be used or disclosed except in accordance with applicable agreements.

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https://support.alcatel-lucent.com

Contents

About this document

Purpose ............................................................................................................................................................................................ viivii

Reason for reissue ....................................................................................................................................................................... viivii

Audience ......................................................................................................................................................................................... viivii

Assumed knowledge ................................................................................................................................................................. viiiviii

Related information ................................................................................................................................................................... viiiviii

To obtain technical support, documentation, and training or submit feedback: ................................................. viiiviii

How to comment ........................................................................................................................................................................ viiiviii

1 Introduction

1.1 Call Flows with Performance Measurements ......................................................................................................... 1-11-1

2 Call Flow Diagrams

2.1 Attach Scenarios

2.1.1 Successful Attach Procedure ..................................................................................................................................... 2-12-1

2.1.2 Successful Emergency Attach Procedure .............................................................................................................. 2-42-4

2.1.3 Failed Attach Procedure .............................................................................................................................................. 2-62-6

2.1.4 Failed Attach -- S1 Connection Failure, No Response from MME ............................................................ 2-82-8

2.1.5 Failed Attach -- Initial Context Setup Failure, No answer from the UE ................................................... 2-92-9

2.1.6 Failed Attach -- RRC Security Mode Failure .................................................................................................... 2-102-10

2.1.7 Failed Attach -- Security Activation Failure or Security Algorithm Not Compatible ........................ 2-112-11

2.1.8 Failed Attach -- Integrity Verification Failure .................................................................................................. 2-122-12

2.1.9 Failed Attach -- RRC Connection Reestablishment ....................................................................................... 2-132-13

2.1.10 Failed Attach -- Initial Context Setup Failure in the eNodeB .................................................................. 2-142-14

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2.1.11 Failed Attach -- Initial Context Setup Failure due to Error in Context SetupRequest from

MME ................................................................................................................................................................................... 2-152-15

2.2 Tracking Area Update Scenarios

2.2.1 Successful TAU with Different MME, Different SGW ................................................................................ 2-162-16

2.2.2 Successful TAU with Same MME, Same SGW .............................................................................................. 2-172-17

2.2.3 Successful TAU with Same MME, Different SGW ....................................................................................... 2-182-18

2.2.4 Failed TAU with Same MME and Same SGW ................................................................................................ 2-192-19

2.2.5 Failed TAU with Different MME, Different SGW ......................................................................................... 2-202-20

2.3 Service Requests Scenarios

2.3.1 Successful Network Initiated Service Request ................................................................................................. 2-222-22

2.3.2 Successful UE Invoked Service Request ............................................................................................................ 2-232-23

2.3.3 Failed UE Invoked Service Request ..................................................................................................................... 2-242-24

2.3.4 Failed UE Invoked Service Request -- No Response from the UE .......................................................... 2-252-25

2.3.5 Failed UE Invoked Service Request -- Security Activation Failure ......................................................... 2-262-26

2.3.6 Failed UE Invoked Service Request -- Integrity Failure .............................................................................. 2-272-27

2.3.7 Failed UE Invoked Service Request -- RRC Connection Reestablishment ........................................... 2-282-28

2.3.8 Failed UE Invoked Service Request -- Initial Context Setup Failure at eNodeB Level ................... 2-292-29

2.3.9 Failed UE Invoked Service Request S1 Connection Failure, No Answer from the MME ............... 2-302-30

2.3.10 Failed UE Invoked Service Request -- S–TMSI Missing in Service Request Message ................. 2-312-31

2.3.11 Failed Network Initiated Service Request ....................................................................................................... 2-322-32

2.3.12 Failed Network Initiated Service Request -- No Response from the UE ............................................. 2-332-33

2.3.13 Failed Network Initiated Service Request -- Security Activation Failure ............................................ 2-342-34

2.3.14 Failed Network Initiated Service Request -- Integrity Failure ................................................................. 2-352-35

2.3.15 Failed Network Initiated Service Request -- RRC Connection Reestablishment ............................. 2-362-36

2.3.16 Failed Network Initiated Service Request -- Initial Context Setup Failure at eNodeB Level................................................................................................................................................................................................ 2-372-37

2.3.17 Failed Network Initiated Service Request -- S1 Connection Failure, No Answer from the

MME ................................................................................................................................................................................... 2-382-38

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2.3.18 Failed Network Initiated Service Request -- S-TMSI Missing from Request Message ................. 2-392-39

2.4 S1 Release Scenarios

2.4.1 Successful MME Initiated S1 Release ................................................................................................................ 2-402-40

2.5 Detach Scenarios

2.5.1 Successful MME Initiated Detach ........................................................................................................................ 2-412-41

2.5.2 Successful UE Initiated Detach .............................................................................................................................. 2-422-42

2.6 Security Function Scenarios

2.6.1 Successful Authentication and NAS Security Activation ............................................................................. 2-432-43

2.6.2 Failed Authentication and NAS Security Activation ...................................................................................... 2-442-44

2.6.3 Failed NAS Security Activation ............................................................................................................................ 2-452-45

2.6.4 Successful ME Identity Check ............................................................................................................................... 2-462-46

2.7 Session Management and QoS Scenarios

2.7.1 Dedicated Bearer Activation Scenarios ............................................................................................................... 2-472-47

2.7.2 Bearer Modification with Bearer QoS Update Scenarios ............................................................................. 2-522-52

2.7.3 Bearer Modification Without Bearer QoS Update Scenarios ...................................................................... 2-572-57

2.7.4 UE Requested Bearer Resource Modification Scenarios ............................................................................. 2-602-60

2.7.5 UE initiated Bearer Resource Allocation Scenarios ....................................................................................... 2-622-62

2.7.6 HSS Initiated Subscribed QoS Modification Scenarios ................................................................................ 2-642-64

2.7.7 Bearer Deactivation Scenarios ............................................................................................................................... 2-692-69

2.8 X2/S1 Handover Scenarios

2.8.1 X2 Handover Scenarios ............................................................................................................................................ 2-732-73

2.8.2 S1 Handover Scenarios ............................................................................................................................................. 2-862-86

2.8.3 LTE to eHRPD Active Handover (Non-optimized with LTE Measurement) ..................................... 2-1022-102

2.9 Multiple PDN Scenarios

2.9.1 Successful UE requested PDN Connectivity .................................................................................................. 2-1032-103

2.9.2 Failed UE Requested PDN Connectivity ......................................................................................................... 2-1042-104

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2.9.3 Failed UE Requested PDN Connectivity -- eNodeB ERAB Setup Failure ......................................... 2-1052-105

2.9.4 Failed UE Requested PDN Connectivity -- RRC Reconfiguration Refused by the UE ................. 2-1062-106

2.9.5 Failed UE Requested PDN Connectivity -- No Answer from the UE ................................................... 2-1072-107

2.9.6 Failed UE Requested PDN Connectivity -- Request Not Accepted by the Network ....................... 2-1082-108

2.9.7 PDN Disconnection Scenarios ............................................................................................................................. 2-1092-109

2.10 RRC Connection Request Scenarios

2.10.1 RRC Connection Request -- Sunny Day ........................................................................................................ 2-1132-113

2.10.2 RRC Connection Request -- No Answer from the UE ............................................................................. 2-1142-114

2.10.3 RRC Connection Request -- MME Overload 1 ........................................................................................... 2-1152-115

2.10.4 RRC Connection Request -- MME Overload .............................................................................................. 2-1162-116

2.10.5 RRC Connection Request -- eNodeB Failure .............................................................................................. 2-1172-117

Index

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About this documentAbout this document

Purpose

This document provides the call flows for LTE performance measurements for the

eNodeB, MME, and SGW in the Alcatel-Lucent LTE system. Performance measurements

provide the basis for performance evaluation, capacity engineering, and help in

troubleshooting.

Note: Not all LTE PMs are included in the call flows.

Attention

Starting with Release LE5.0, all LTE Solution customer document numbers will have a

17-digits format. Therefore, this document's number has changed from 418-111-008 to

9YZ-03745-9408-TQZZA.

Reason for reissue

The reissue history of this document is shown in the following table:

Location Change

Calls flows Updated call flows for LE5.0

Document Number

and About this document section

New document identifier: from 418–111–008

to 9YZ-03745-9408-TQZZA.

Audience

This document is intended for use by engineers, technicians, and system administrators

who are responsible for wireless network monitoring, performance, trouble shooting,

Radio Frequency (RF) optimization, and configuration.

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Assumed knowledge

The reader must be familiar with:

• General knowledge of eNodeB and MME performance measurement counters

• Understanding of LTE elements and procedures as specified in 3GPP TS 23.401

v8.6.0

• Understanding of NAS Messaging as specified in 3GPP TS 24.301

• Understanding of Tunneling messaging as specified in 3GPP TS 29.274.

Basically, the reader should have an understanding of the performance measurements and

an understanding of the LTE procedures that make up the call flows.

Related information

Refer to the Alcatel-Lucent LTE Solution | LE5.0 Operations, Administration, and

Maintenance document, 9YZ–03745–9401–TQZZA for a description of LTE and the

End-to-End LTE Solution.

To obtain technical support, documentation, and training or submit feedback:

The Online Customer Support (OLCS) web site,

(https://support.alcatel-lucent.com)

provides access to technical support, related documentation, related training, and

feedback tools. The site also provides account registration for new users.

How to comment

Alcatel-Lucent has made every effort to ensure that this information product meets your

needs. Alcatel-Lucent is interested in your comments and suggestions to improve this

information product. You may submit comments and suggestions on this and other

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(http://www.lucent-info.com/comments)

Via e-mail

To submit comments via e-mail, please send your message to:

[email protected]

About this document

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http://www.lucent-info.com/comments

1 1Introduction

1.1 Call Flows with Performance Measurements

Overview

This document provides the call flows for LTE performance measurements for the

eNodeB, MME, and SGW in the Alcatel-Lucent LTE system. Performance measurements

provide the basis for performance evaluation, capacity engineering and help in

troubleshooting. To understand the meaning of these performance measurements, it is

necessary to understand the relative sequence of pegging these measurements. Call flows

provide useful context for showing the sequence of events and when the PMs are pegged

under what conditions.

The scenarios contained herein are selected sunny and rainy day scenarios. 3GPP2

Handovers are covered in this version. Handovers to 3GPP will be provided in a future

version of this document. Note that not all of the LTE PMs are included in the call flows.

The scope of this document includes PMs for eNodeB, MME, and SGW. Call flows are

based on scenarios defined in 3GPP TS 23.401. Maintenance actions that result in specific

PMs being pegged are not covered in this document.

For a complete list of eNodeB PMs, please refer to document 9YZ-03990-0105-RKZZA,

Alcatel-Lucent 9412 eNodeB Counters Reference Guide.

For a complete list of MME PMs, please refer to document 418-111-209, Alcatel-Lucent

9471 MME Observation Counters.

For a complete list of SGW PMs, please refer to document 93-0363-04-xx Alcatel–Lucent

7750 SR OS MG KPI/KCI Counters.

Guide to the Document

The diagrams in the document indicate where PMs are pegged in the eNodeB, MME, and

SGW. The eNodeB PMs are in the green ovals in the diagrams. The MME PMs are blue.

And the SGW PMs are in purple. Triggers for pegging PM counts may be receipt of a

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particular message or the sending of a particular message, as shown in the example below

for the eNodeB counts. Also, sometimes more than one PM may be pegged at the same

point in the call flow, such as in the MME oval.

The following is a sample diagram provided only to show how PMs are represented.

Legend:

eNodeB PMs are represented in the green text.

MME PMs are represented in the blue text.

SGW PMs are represented in the purple text.

FAILURE SCENARIOS: The call flows for failure scenarios depict where in the call

flow certain errors can occur and the corresponding failure counters that are pegged as a

result of the failure. Most of the failure call flows show multiple error scenarios.

Typically, if the error occurs and the call flow ends at that point, an EXIT will be shown

in the call flow. This indicates that the rest of the call flow would not continue. If the error

does not occur, the success counter would be pegged (refer to success scenarios) and the

call flow continues until if/when it encounters another error. In some cases, a failure does

not end the call flow, in which case, a Continue will be shown in the call flow.

Introduction 1.1 Call Flows with Performance Measurements

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2 2Call Flow Diagrams


2.1.1 Successful Attach Procedure

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Call Flow Diagrams



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2.1.2 Successful Emergency Attach Procedure

Call Flow Diagrams



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2.1.3 Failed Attach Procedure

Call Flow Diagrams



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Call Flow Diagrams



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2.1.4 Failed Attach -- S1 Connection Failure, No Response

from MME

Call Flow Diagrams


2.1.4 Failed Attach -- S1 Connection Failure, No Response

from MME

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2.1.5 Failed Attach -- Initial Context Setup Failure, No answer

from the UE

Call Flow Diagrams


2.1.5 Failed Attach -- Initial Context Setup Failure, No

answer from the UE

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2.1.6 Failed Attach -- RRC Security Mode Failure

Call Flow Diagrams


2.1.6 Failed Attach -- RRC Security Mode Failure

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2.1.7 Failed Attach -- Security Activation Failure or Security

Algorithm Not Compatible

Call Flow Diagrams


2.1.7 Failed Attach -- Security Activation Failure or Security

Algorithm Not Compatible

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2.1.8 Failed Attach -- Integrity Verification Failure

Call Flow Diagrams


2.1.8 Failed Attach -- Integrity Verification Failure

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2.1.9 Failed Attach -- RRC Connection Reestablishment

Call Flow Diagrams


2.1.9 Failed Attach -- RRC Connection Reestablishment

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2.1.10 Failed Attach -- Initial Context Setup Failure in the

eNodeB

Call Flow Diagrams


2.1.10 Failed Attach -- Initial Context Setup Failure in the

eNodeB

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2.1.11 Failed Attach -- Initial Context Setup Failure due to

Error in Context SetupRequest from MME

Call Flow Diagrams


2.1.11 Failed Attach -- Initial Context Setup Failure due to

Error in Context SetupRequest from MME

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2.2.1 Successful TAU with Different MME, Different SGW

Call Flow Diagrams


2.2.1 Successful TAU with Different MME, Different SGW

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2.2.2 Successful TAU with Same MME, Same SGW

Call Flow Diagrams


2.2.2 Successful TAU with Same MME, Same SGW

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2.2.3 Successful TAU with Same MME, Different SGW

Call Flow Diagrams


2.2.3 Successful TAU with Same MME, Different SGW

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2.2.4 Failed TAU with Same MME and Same SGW

Call Flow Diagrams


2.2.4 Failed TAU with Same MME and Same SGW

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2.2.5 Failed TAU with Different MME, Different SGW

In these scenarios, there are some checks that the MME does to determine if the request is

“Inter MME and Inter SGW”. If failures occur before those checks, then the “InterMME”

and “InterSGW” counters are not pegged.

Call Flow Diagrams


2.2.5 Failed TAU with Different MME, Different SGW

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Call Flow Diagrams 2.2.5 Failed TAU with Different MME, Different SGW

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2.3.1 Successful Network Initiated Service Request

Call Flow Diagrams


2.3.1 Successful Network Initiated Service Request

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2.3.2 Successful UE Invoked Service Request

Call Flow Diagrams


2.3.2 Successful UE Invoked Service Request

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2.3.3 Failed UE Invoked Service Request

Call Flow Diagrams


2.3.3 Failed UE Invoked Service Request

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2.3.4 Failed UE Invoked Service Request -- No Response from

the UE

Call Flow Diagrams


2.3.4 Failed UE Invoked Service Request -- No Response

from the UE

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2.3.5 Failed UE Invoked Service Request -- Security Activation

Failure

Call Flow Diagrams


2.3.5 Failed UE Invoked Service Request -- Security

Activation Failure

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2.3.6 Failed UE Invoked Service Request -- Integrity Failure

Call Flow Diagrams


2.3.6 Failed UE Invoked Service Request -- Integrity Failure

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2.3.7 Failed UE Invoked Service Request -- RRC Connection

Reestablishment

Call Flow Diagrams


2.3.7 Failed UE Invoked Service Request -- RRC Connection

Reestablishment

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2.3.8 Failed UE Invoked Service Request -- Initial Context

Setup Failure at eNodeB Level

Call Flow Diagrams


2.3.8 Failed UE Invoked Service Request -- Initial Context

Setup Failure at eNodeB Level

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2.3.9 Failed UE Invoked Service Request S1 Connection

Failure, No Answer from the MME

Call Flow Diagrams


2.3.9 Failed UE Invoked Service Request S1 Connection

Failure, No Answer from the MME

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2.3.10 Failed UE Invoked Service Request -- S–TMSI Missing in

Service Request Message

Call Flow Diagrams


2.3.10 Failed UE Invoked Service Request -- S–TMSI Missing

in Service Request Message

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2.3.11 Failed Network Initiated Service Request

Call Flow Diagrams


2.3.11 Failed Network Initiated Service Request

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2.3.12 Failed Network Initiated Service Request -- No

Response from the UE

Call Flow Diagrams


2.3.12 Failed Network Initiated Service Request -- No

Response from the UE

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2.3.13 Failed Network Initiated Service Request -- Security

Activation Failure

Call Flow Diagrams


2.3.13 Failed Network Initiated Service Request -- Security

Activation Failure

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2.3.14 Failed Network Initiated Service Request -- Integrity

Failure

Call Flow Diagrams


2.3.14 Failed Network Initiated Service Request -- Integrity

Failure

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-35

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IN

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IN

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2.3.15 Failed Network Initiated Service Request -- RRC

Connection Reestablishment

Call Flow Diagrams


2.3.15 Failed Network Initiated Service Request -- RRC

Connection Reestablishment

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

PR

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IN

AR

YP

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IN

AR

Y

2.3.16 Failed Network Initiated Service Request -- Initial

Context Setup Failure at eNodeB Level

Call Flow Diagrams


2.3.16 Failed Network Initiated Service Request -- Initial

Context Setup Failure at eNodeB Level

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-37

PR

ELIM

IN

AR

YP

RELIM

IN

AR

Y

2.3.17 Failed Network Initiated Service Request -- S1

Connection Failure, No Answer from the MME

Call Flow Diagrams


2.3.17 Failed Network Initiated Service Request -- S1

Connection Failure, No Answer from the MME

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

PR

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IN

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YP

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IN

AR

Y

2.3.18 Failed Network Initiated Service Request -- S-TMSI

Missing from Request Message

Call Flow Diagrams


2.3.18 Failed Network Initiated Service Request -- S-TMSI

Missing from Request Message

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-39

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IN

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2.4.1 Successful MME Initiated S1 Release

Call Flow Diagrams


2.4.1 Successful MME Initiated S1 Release

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.5.1 Successful MME Initiated Detach

Call Flow Diagrams


2.5.1 Successful MME Initiated Detach

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-41

PR

ELIM

IN

AR

YP

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IN

AR

Y

2.5.2 Successful UE Initiated Detach

Call Flow Diagrams


2.5.2 Successful UE Initiated Detach

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

PR

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IN

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IN

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Y


2.6.1 Successful Authentication and NAS Security Activation

Call Flow Diagrams


2.6.1 Successful Authentication and NAS Security Activation

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-43

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IN

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IN

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Y

2.6.2 Failed Authentication and NAS Security Activation

Call Flow Diagrams


2.6.2 Failed Authentication and NAS Security Activation

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

PR

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IN

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YP

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IN

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Y

2.6.3 Failed NAS Security Activation

Call Flow Diagrams


2.6.3 Failed NAS Security Activation

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-45

PR

ELIM

IN

AR

YP

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IN

AR

Y

2.6.4 Successful ME Identity Check

Call Flow Diagrams


2.6.4 Successful ME Identity Check

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

PR

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IN

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YP

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IN

AR

Y


2.7.1 Dedicated Bearer Activation Scenarios

2.7.1.1 Successful Dedicated Bearer Activation

(*) Refer to “2.7.4 UE Requested Bearer Resource Modification Scenarios” (p. 2-60) and

to “2.7.5 UE initiated Bearer Resource Allocation Scenarios” (p. 2-62) for UE Initiated

Bearer Modification/Allocation.

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-47

PR

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IN

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2.7.1.2 Failed Dedicated Bearer Activation – Failure in Create Bearer Request



Bearer Modification/Allocation attempt counts.

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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IN

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IN

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Y

2.7.1.3 Failed Dedicated Bearer Activation – ERAB Setup Failure in eNodeB




Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-49

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IN

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IN

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Y

2.7.1.4 Failed Dedicated Bearer Activation – No Answer from the UE




Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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IN

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IN

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Y

2.7.1.5 Failed Dedicated Bearer Activation – RRC Reconfiguration Refused by the UE




Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-51

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IN

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IN

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Y

2.7.2 Bearer Modification with Bearer QoS Update Scenarios

2.7.2.1 Successful Bearer Modification With Bearer QoS Update

The following procedure applies to both PGW-Initiated bearer modification and

UE-Initiated bearer modification (see “2.7.4.1 Successful UE Requested Bearer Resource

Modification” (p. 2-60)).




Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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IN

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IN

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Y

2.7.2.2 Failed Bearer Modification With Bearer QoS Update – Failure in Update Bearer Request

Message




Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-53

PR

ELIM

IN

AR

YP

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IN

AR

Y

2.7.2.3 Failed Bearer Modification With Bearer QoS Update – Failure in ERAB Modification at

eNodeB




Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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Y

2.7.2.4 Failed Bearer Modification With Bearer QoS Update – No Answer from the UE




Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-55

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2.7.2.5 Failed Bearer Modification With Bearer QoS Update – RrcConnectionReestablishmen-

tRequest Received from the UE




Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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Y

2.7.3 Bearer Modification Without Bearer QoS Update

Scenarios

2.7.3.1 Successful Bearer Modification Without Bearer QoS Update

The following procedure applies to both PGW-Initiated bearer modification and

UE-Initiated bearer modification (see “2.7.4.1 Successful UE Requested Bearer Resource

Modification” (p. 2-60)).




Call Flow Diagrams



Scenarios

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-57

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IN

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2.7.3.2 Failed Bearer Modification Without Bearer QoS Update -- Failure in Update Bearer

Request Message




Call Flow Diagrams



Scenarios

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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Y

2.7.3.3 Failed Bearer Modification Without Bearer QoS Update – Failure in Session Mgmt Response

from UE




Call Flow Diagrams



Scenarios

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



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2.7.4 UE Requested Bearer Resource Modification Scenarios

2.7.4.1 Successful UE Requested Bearer Resource Modification

The rest of the call flow follows as one of the following:

• Dedicated bearer activation as in Section “2.7.1.1 Successful Dedicated Bearer

Activation” (p. 2-47)

• Bearer modification procedure as in “2.7.3.1 Successful Bearer Modification Without

Bearer QoS Update” (p. 2-57)

• Dedicated bearer deactivation procedure as in Section “2.7.7.1 Successful PDN

Gateway initiated bearer deactivation” (p. 2-69).

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.7.4.2 Failed UE Requested Bearer Resource Modification -- Failure at PGW








Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-61

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IN

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2.7.5 UE initiated Bearer Resource Allocation Scenarios

2.7.5.1 UE Initiated Bearer Resource Allocation








Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.7.5.2 Failed UE Requested Bearer Resource Allocation, Failure at PGW

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



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2.7.6 HSS Initiated Subscribed QoS Modification Scenarios

2.7.6.1 Successful HSS Initiated Subscribed QoS Modification

Call Flow Diagrams



....................................................................................................................................................................................................................................

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Issue 0.03 May 2012

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2.7.6.2 Failed HSS Initiated Bearer Modification with QoS Update – Failure in Update Bearer

Request Message

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-65

PR

ELIM

IN

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IN

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Y

2.7.6.3 Failed HSS Initiated Subscribed QoS Modification – Failure in ERAB Modification at eNodeB

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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Y

2.7.6.4 Failed HSS Initiated Subscribed QoS Modification – RrcConnectionReestablishmentRequest

Received from the UE

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-67

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Y

2.7.6.5 Failed HSS Initiated Subscribed QoS Modification – No Answer from the UE

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.7.7 Bearer Deactivation Scenarios

2.7.7.1 Successful PDN Gateway initiated bearer deactivation

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-69

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IN

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Y

2.7.7.2 Failed PDN GW Initiated Bearer Deactivation

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.7.7.3 Successful MME initiated bearer deactivation

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



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2.7.7.4 Failed MME Initiated Bearer Deactivation

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.8.1 X2 Handover Scenarios

Purpose

X2 handover is always using the same MME (intra-MME).

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



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2.8.1.1 Successful X2 handover, same SGW

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.8.1.2 Successful X2 handover, different SGW

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-75

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2.8.1.3 Failed X2 HO, Inter SGW – Failure at Target SGW

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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Y

2.8.1.4 Cancelled X2 HO at Source eNodeB

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-77

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2.8.1.5 Failed X2 HO, Preparation at Target eNodeB

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.8.1.6 Failed X2 HO, Radio Link Failure at Source eNodeB

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-79

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IN

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2.8.1.7 Failed X2 HO, Integrity Failure at Target eNodeB

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.8.1.8 Failed X2 HO, RRC Connection Reestablishment Received from UE on Source eNodeB

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-81

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IN

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Y

2.8.1.9 Failed X2 HO, RRC Connection Reestablishment Received from UE on Target eNodeB

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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Y

2.8.1.10 Failed X2 HO, X2 Release Timeout at Source eNodeB

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-83

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2.8.1.11 Failed X2 HO, Path Switch Failure

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.8.1.12 Failed X2 HO, S1 Path Switch Timeout

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-85

PR

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IN

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Y

2.8.2 S1 Handover Scenarios

2.8.2.1 Successful S1 handover, Inter MME Inter SGW

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





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Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-87

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2.8.2.2 Failed S1 Handover, Inter MME Inter SGW – Reject at Target eNodeB

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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Y

2.8.2.3 Successful S1 Handover, Inter MME Intra SGW

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-89

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IN

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Y

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.8.2.4 Successful S1 handover, intra MME inter SGW

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-91

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Y

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.8.2.5 Successful S1 handover, intra MME intra SGW

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-93

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Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.8.2.6 Failed S1 Handover Preparation at Target eNodeB

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-95

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Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.8.2.7 Failed S1 Handover -- Radio Link Failure at Source eNodeB

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-97

PR

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IN

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IN

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Y

2.8.2.8 Failed S1 Handover -- Integrity Failure at Target eNodeB

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.8.2.9 Failed S1 Handover -- S1 Release Timeout at Source eNodeB

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-99

PR

ELIM

IN

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IN

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Y

2.8.2.10 Failed S1 Handover -- RRC Connection Reestablishment on Source eNodeB

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.8.2.11 Failed S1 Handover -- RRC Connection Reestablishment on Target eNodeB

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-101

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2.8.3 LTE to eHRPD Active Handover (Non-optimized with LTE

Measurement)

Call Flow Diagrams


2.8.3 LTE to eHRPD Active Handover (Non-optimized with

LTE Measurement)

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.9.1 Successful UE requested PDN Connectivity

Call Flow Diagrams


2.9.1 Successful UE requested PDN Connectivity

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-103

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2.9.2 Failed UE Requested PDN Connectivity

Call Flow Diagrams


2.9.2 Failed UE Requested PDN Connectivity

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.9.3 Failed UE Requested PDN Connectivity -- eNodeB ERAB

Setup Failure

Call Flow Diagrams


2.9.3 Failed UE Requested PDN Connectivity -- eNodeB

ERAB Setup Failure

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-105

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2.9.4 Failed UE Requested PDN Connectivity -- RRC

Reconfiguration Refused by the UE

Call Flow Diagrams


2.9.4 Failed UE Requested PDN Connectivity -- RRC

Reconfiguration Refused by the UE

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.9.5 Failed UE Requested PDN Connectivity -- No Answer

from the UE

Call Flow Diagrams


2.9.5 Failed UE Requested PDN Connectivity -- No Answer

from the UE

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-107

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2.9.6 Failed UE Requested PDN Connectivity -- Request Not

Accepted by the Network

Call Flow Diagrams


2.9.6 Failed UE Requested PDN Connectivity -- Request Not

Accepted by the Network

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.9.7 PDN Disconnection Scenarios

2.9.7.1 Successful UE Requested PDN Disconnection

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-109

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2.9.7.2 Failed UE Requested PDN Disconnection

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.9.7.3 Successful MME Requested PDN Disconnection

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-111

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2.9.7.4 Failed MME Requested PDN Disconnection

Call Flow Diagrams



....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.10.1 RRC Connection Request -- Sunny Day

Call Flow Diagrams


2.10.1 RRC Connection Request -- Sunny Day

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-113

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2.10.2 RRC Connection Request -- No Answer from the UE

Call Flow Diagrams


2.10.2 RRC Connection Request -- No Answer from the UE

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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2.10.3 RRC Connection Request -- MME Overload 1

Call Flow Diagrams


2.10.3 RRC Connection Request -- MME Overload 1

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................



Issue 0.03 May 2012



2-115

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2.10.4 RRC Connection Request -- MME Overload

Call Flow Diagrams


2.10.4 RRC Connection Request -- MME Overload

....................................................................................................................................................................................................................................

....................................................................................................................................................................................................................................





Issue 0.03 May 2012

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Y

2.10.5 RRC Connection Request -- eNodeB Failure

Call Flow Diagrams


2.10.5 RRC Connection Request -- eNodeB Failure

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Call Flow Diagrams 2.10.5 RRC Connection Request -- eNodeB Failure

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Index

A attach, 2-1

Failed Attach Procedure, 2-6

Initial Context Setup Failure

due to Error in Context

SetupRequest from MME,

2-15

Initial Context Setup Failure in

the eNodeB, 2-14

Initial Context Setup Failure,

No answer from the UE, 2-9

Integrity Verification Failure,

2-12

RRC Connection

Reestablishment, 2-13

RRC Security Mode Failure,

2-10

S1 Connection Failure, No

Response from MME, 2-8

Security Activation Failure or

Security Algorithm Not

Compatible, 2-11

successful, 2-1

Successful Emergency Attach

Procedure, 2-4

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C call flow diagram format, 1-1

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D detach

Successful MME Initiated

Detach, 2-41

Successful UE Initiated

Detach, 2-42

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H Handover

LTE to eHRPD, 2-102

S1, 2-86

X2, 2-73

help, viii

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M Multiple PDNs

Failed UE Requested PDN

Connectivity, 2-104


Connectivity -- eNodeB

ERAB Setup Failure, 2-105


Connectivity -- No Answer

from the UE, 2-107


Connectivity -- Request Not

Accepted by the Network,

2-108


Connectivity -- RRC

Reconfiguration Refused by

the UE, 2-106

PDN Disconnection, 2-109

Successful UE requested PDN

Connectivity, 2-103

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O overview, call flows, 1-1

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R RRC connection request --

eNodeB Failure, 2-117

RRC connection request -- MME

Overload, 2-116

RRC connection request -- MME

Overload 1, 2-115

RRC connection request -- No

Answer from the UE, 2-114

RRC connection request -- Sunny

Day, 2-113

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S S1 release

Successful MME Initiated S1

Release, 2-40

Security Function

Failed Authentication and NAS

Security Activation, 2-44,

2-45

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Successful Authentication and

NAS Security Activation,

2-43

Successful ME Identity Check,

2-46

Service Request

Failed Network Initiated

Service Request, 2-32


Service Request -- Initial

Context Setup Failure at

eNodeB Level, 2-37


Service Request -- Integrity

Failure, 2-35


Service Request -- No

Response from the UE, 2-33


Service Request -- RRC

Connection Reestablishment,

2-36


Service Request -- S-TMSI

Missing from Request

Message, 2-39


Service Request -- S1

Connection Failure, No

Answer from the MME, 2-38


Service Request -- Security

Activation Failure, 2-34

Failed UE Invoked Service

Request, 2-24


Request -- Initial Context

Setup Failure at eNodeB

Level, 2-29


Request -- Integrity Failure,

2-27, 2-28


Request -- No Response from

the UE, 2-25


Request -- Security

Activation Failure, 2-26


Request S1 Connection

Failure, No Answer from the

MME, 2-30


Request – S-TMSI Missing in

Service Request Message,

2-31

Successful Network Initiated

Service Request, 2-22

Successful UE Invoked Service

Request, 2-23

Session management and QoS

Bearer Deactivation, 2-69

Bearer Modification with

Bearer QoS Update, 2-52

Dedicated Bearer Activation,

2-47

Successful Bearer

Modification Without Bearer

QoS Update, 2-57

UE initiated Bearer Allocation,

2-62

UE Requested Bearer Resource

Modification, 2-60

support, viii

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T technical support, viii

tracking area update, 2-16

Tracking Area Update

Failed TAU with Different

MME, Different SGW, 2-20

Failed TAU with Same MME

and Same SGW, 2-19

Successful TAU with Different


Successful TAU with Same


Successful TAU with Same

MME, Same SGW, 2-17

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W Wireless Technical Support Center

(WTSC), viii

Index

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