Inter System HO Signalling

The signalling procedures involved with Inter-system HO is explained in chapter section 9.9. In short, the steps involved in this procedure are:

1. Phase 1: ISHO triggers

2. Phase 2: Compressed Mode measurements for BCCH RSSI 3. Phase 3: Measurement Reports (UE to RNC)

4. Phase 4: Compressed Mode measurements for BSIC verification 5. Phase 5: Measurement Reports (UE to RNC)

6. Phase 6: HO decision

7. Phase 7: Signalling between SRNC & BSC

5.8. HANDOVER CONTROL 167

8. Phase 8: Communication between UE and GERAN 9. Phase 9: Confirmation about successful HO to RNC

Copyright Notices

In order to create some figures, tables and text-sections, the following reference material has been used. Information has been interpreted and presented in a simplified manner. The original references are provided here.

Main reference material for this book has been technical specifications (TSs) and technical reports (TRs) of 3rd Generation Partnership Project (3GPP).

Figure 5.3 on page 122 Figure 13 of 3GPP TS 25.433 v 7.0.0. Figure 5.4 on page 124 Figure 40 of 3GPP TS 25.433 v 7.0.0. Figure 5.20 on page 161 Figure 5-1 of 3GPP TS 25.922 v 7.0.0. Text about RRM Strategies in

section 5.3 on page 129

Section 12 of 3GPP TS 25.922 v 7.0.0. Text about Common-NBAP mea-

surements on page 122

Section 8.2.9.2 of 3GPP TS 25.433 v 7.0.0.

Text about Dedicated-NBAP

measurements on page 123

Section 8.2.9.2 of 3GPP TS 25.433 v 7.0.0. Text about UE measurements on

page 123

Section 5.1 & 5.2 of 3GPP TS 25.215 v 7.0.0.

Text about Initial PRACH

Preamble on page 145

Section 8.5.7 of 3GPP TS 25.331 v 6.9.0. Text about Active, Monitored

and Detected cells on page 156

Section 8.4.0 of 3GPP TS 25.331 v 6.9.0. Text about Intra-frequency mea-

surement quantities on page 157

Section 14.1.1. of 3GPP TS 25.331 v 6.9.0.

Text about IF measurement

quantities on page 164

Section 14.2.0a of 3GPP TS 25.331 v 6.9.0. Text about Event 2A to 2F on

page 164

Section 10.3.7.19 of 3GPP TS 25.331 v 6.9.0.

Text about IS measurement

quantities on page 164

Section 14.3.0a of 3GPP TS 25.331 v 6.9.0. Text about Event 3A to 3D on

page 165

Section 10.3.7.30 of 3GPP TS 25.331 v 6.9.0. c

⃝2006. 3GPPTM

TSs and TRs are the property of ARIB, ATIS, ETSI, CCSA, TTA, and TTC who jointly own the copyright for them. They are subject to further modifications and are therefore provided to you “as is” for information purposes only. Further use is strictly prohibited.

5.8. HANDOVER CONTROL 169

Text about Open Loop PC pa- rameters on page 146

Section 6.1 3GPP TS 25.214 v 6.9.0. Text about UL Inner Loop PC on

page 148

Section 5.1.2.2.1 3GPP TS 25.214 v 6.9.0. Text about UL PC Algorithm 1

on page 149

Section 5.1.2.2.2 3GPP TS 25.214 v 6.9.0. Text about UL PC Algorithm 2

on page 149

Section 5.1.2.2.3 3GPP TS 25.214 v 6.9.0. Text about DL PC (UE be-

haviour) on page 151

Section 5.2.1.2.1 3GPP TS 25.214 v 6.9.0. Text about DL PC (UTRAN be-

haviour) on page 151

Section 5.2.1.2.2 3GPP TS 25.214 v 6.9.0. Figure 5.12 on page 147 Figure 31 of 3GPP TS 25.211 v 9.1.0.

c

⃝2009. 3GPPTM_{TSs and TRs are the property of ARIB, ATIS, ETSI, CCSA,}

TTA, and TTC who jointly own the copyright for them. They are subject to further modifications and are therefore provided to you “as is” for information purposes only. Further use is strictly prohibited.

[1] 3GPP TS 25.211 ver. 6.0.0 ;‘Physical channels and mapping of transport channels

onto physical channels (FDD)’

[2] 3GPP TS 25.212 ver. 7.0.0 ;‘Multiplexing and Channel Coding (FDD)’ [3] 3GPP TS 25.213 ver. 6.0.0 ;‘Spreading and Modulation (FDD)’

[4] 3GPP TS 25.214 ver. 6.0.0 ;‘Physical Layer Procedures (FDD)’

[5] 3GPP TS 25.214 ver. 6.0.0 ;‘3GPP TS 25.215, Physical layer - Measurements (FDD)’ [6] 3GPP TS 25.301 ver. 7.0.0 ;‘Radio Interface Protocol Architecture’

[7] 3GPP TS 25.401 Ver. 7.0.0 ;‘UTRAN overall description’

[8] 3GPP TS 25.413 ver. 6.0.0 ;‘UTRAN Iu interface RANAP signalling’

[9] 3GPP TS 25.433 ver. 6.0.0 ;‘UTRAN Iub interface Node B Application Part (NBAP)

signalling’

[10] 3GPP TS 25.331 ver. 7.0.0 ;‘Radio Resource Control (RRC) protocol specification’ [11] 3GPP TR 25.922 ver. 7.0.0 ;‘Radio resource management strategies’

[12] 3GPP TR 25.931 ver. 8.0.0 ;‘UTRAN functions, examples on signalling procedures’ [13] H.Holma and A. Toskala, ‘WCDMA for UMTS’ , 5th Edition, John Wiley & Sons. [14] Chris Johnson, ‘Radio Access Networks For UMTS ; Principles And Prac-

tice’ , John Wiley & Sons.

For HSDPA-specific details, the version of these specs should be 5.0.0 or higher & for HSUPA-specific details, it should be 6.0.0 or higher.

CHAPTER

6

PROTOCOLS & INTERFACES

Abbreviations

In this module, a lot of abbreviation will be used. Therefore, it is better to introduce a list of all the abbreviations used in the coming sections.

• AAL2/5: ATM adaptation Layer type 2 / Type 5 • ATM: Asynchronous Transfer Mode

• BMC: Broadcast/Multicast Control Protocol

• BSSAP: Base Station System Application Part Protocol • FP: Frame Protocol

• GMM: GPRS Mobility Management • SM: (GPRS) Session Management • GTP: GPRS Tunneling Protocol • luUP: Iu User Plane Protocol • MAC: Medium Access Control

• MAP: Mobile Application Part • MM: Mobility Management

• MTP-3B: Message Transfer Part Level 3B • NBAP: NBAP Node B Application Part • PDCP: Packet Data Convergence Protocol • ALCAP: Access Link Control Application Part • RANAP: Radio Access Network Application Protocol • RLC: Radio Link Control Protocol

• RNSAP: Radio Network Subsystem Application Part • RRC: Radio Resource Control

• RTCP: Real Time Control Protocol • RTP: Real Time Protocol

• SCCP: Signalling Connection Control Part • SCTP: Stream Control Transmission Protocol • SMS: SMS Short Message Service

• SS: Supplementary Services

• SSCOP: Service Specific Connection-Oriented Protocol

• SSCF-NNI: Service Specific Coordination Function - Network-Network Interface • SSCF-UNI: Service Specific Coordination Function - User-Network Interface • UDP: User Datagram Protocol

6.1

Overview

Source: 3GPP TS 25.401; UTRAN overall description

Figure 6.1 shows the general protocol model for UTRAN interfaces. While designing this structure, it was planned to keep the layers and planes logically independent of each other. This strategy was designed so that protocol stacks and planes can be modified according to the future requirements.

6.1. OVERVIEW 173

Figure 6.1: General Protocol Model for UTRAN Interfaces (TS 25.401)