Femtocell-BSR Call Flows BCR2 1 v03

Alcatel-Lucent – ProprietaryUse pursuant to Company instruction

Femto-BSR Call FlowsBCR 2.1

BSR Femto SAE

May 2008

Alcatel-Lucent – ProprietaryUse pursuant to Company instruction2 | Femto-BSR Call Flows BCR2.1 | May 2008

Agenda

Femto-BSR Call Flows (BCR2.1)

1. BSR Network Overview

2. RRC Connection Setup/Release

3. Attach/Location Registration

4. CS and PS Calls

5. Handover


1 Femto-BSR Network Overview


Femto-BSR Call Control Architecture

UE 1

UE 2

Managed IP network

BSG

BVG

MSC Server

MGW

3G-MSC

IPSec Router

Iu-CS’ Iu-CS Control

Plane

H-BSR

Iu-CS User Plane

BPG

H-BSR SGSN

Iu-PS User Plane

Iu-PS Control Plane

Iu-PS’

GGSN


2 RRC Connection Setup/Release


Call Flow: RRC Connection Setup/Release

UE BSR

1. RRC: RRC Connection Request

2. RRC: RRC Connection Setup

3. RRC: RRC Connection Setup Complete

5. RRC: RRC Connection Release

6. RRC: RRC Connection Release Complete

4. RRC and NAS Signalling procedures


3 Attach/Detach

Location Registration


PS Call Flow: GPRS Attach (allowed user)

UE SGSN Femto-BSR BSG

6. RRC: Security Mode Command

6. RRC: Security Mode Complete

2. RRC: Initial Direct Transfer (NAS: Attach Request)

4. RANAP: Initial UE Message (NAS: Attach Request)

6. RANAP: Security Mode Command

6. RANAP: Security Mode Complete

7. RANAP: Common Id

9. NAS: Attach Accept

3. NAS: Identity Request

1. RRC Connection Establishment

5. NAS: Authentication procedure

3. NAS: Identity Response

8. NAS: GMM Information (network name) 8. NAS: GMM Information (modified network name)

9. NAS: Attach Accept

11. RRC Connection Release

10. RANAP: Iu Release Request

10. RANAP: Iu Release Complete

The Femto-BSR requests IMSI from the UE in order to perform user access control, if not included in the attach request.

The UE initiates the GPRS Attach procedure.

The Femto-BSR intercepts the GMM Information message and modifies the network name if received from the CN.

9. NAS: Attach Complete 9. NAS: Attach Complete

Iu-PS Connection is released, if no follow on request.


PS Call Flow: GPRS Detach




2. RRC: Initial Direct Transfer (NAS: Detach Request)

3. RANAP: Initial UE Message (NAS: Detach Request)



7. RANAP: Common Id

9. NAS: Detach Accept 9. NAS: Detach Accept



The UE initiates the GPRS detach procedure.

Detach Accept is only sent if no power off detach.

GGSN

4. GTP-C: Delete PDP Context Request

4. GTP-C: Delete PDP Context Response




CS Call Flow: Location Area Update (allowed user)

UE MSC Femto-BSR BSG



2. RRC: Initial Direct Transfer (NAS Location Updating Request)

4. RANAP: Initial UE Message (NAS: Location Updating Request)



7. RANAP: Common Id

9. NAS: Location Updating Accept





8. NAS: MM Information (network name) 8. NAS: MM Information (modified network name)

9. NAS: Location Updating Accept




The Femto-BSR requests IMSI from the UE in order to perform user access control.

The UE has reselected the Femto cell and triggers the location area updates procedure.

The Femto-BSR intercepts the MM Information message and modifies the network name received from the CN.

9. NAS: TMSI Reallocation Complete 9. NAS: TMSI Reallocation Complete


PS Call Flow: Routing Area Update (allowed user)




2. RRC: Initial Direct Transfer (NAS: Routing Area Update Request)

4. RANAP: Initial UE Message (NAS: Routing Area Update Request)



7. RANAP: Common Id

9. NAS: Routing Area Update Accept





8. NAS: GMM Information (network name) 8. NAS: GMM Information (modified network name)

9. NAS: Routing Area Update Accept




The Femto-BSR requests IMSI from the UE in order to perform user access control.

The UE has reselected the Femto cell and triggers the routing area updates procedure.

The Femto-BSR intercepts the GMM Information message and modifies the network name if received from the CN.

9. NAS: Routing Area Update Complete 9. NAS: Routing Area Update Complete


4 CS and PS Calls


CS Call Flow: Mobile Originated CS Call Establishment

2. RANAP: Initial UE Message (NAS: CM Service Request)


UE BVG BSR 3G-MSC BSG

7. RRC: Radio Bearer Setup

7. RRC: Radio Bearer Setup Complete


7. RANAP: RAB Assignment Request

7. DPAT: Binding Update Request

7. DPAT: Binding Update Response





6. NAS: Setup

6. NAS: Call Proceeding

5. RANAP: Common ID

7. RANAP: RAB Assignment Response

9. NAS: Alerting

10. NAS: Connect

10. NAS: Connect Ack

8. CS voice user plane path

2. RRC: Initial Direct Transfer (NAS message)


CS Call Flow: Mobile Originated CS Call Release

2. NAS: Disconnect

3. RANAP: Iu Release Command






2. NAS: Release

2. NAS: Release Complete

5. DPAT Release

1. CS call established


CS Call Flow: Mobile Terminated CS Call Establishment

1. RANAP: Paging


2. RANAP: Paging 3. RRC: Paging Type 1






9. DPAT: Binding Update Request

9. DPAT: Binding Update Response



6. RRC: Security Mode Complete 6. RANAP: Security Mode Complete

8. NAS: Setup

8. NAS: Call Confirmed

7. RANAP: Common ID


10. NAS: Alerting

11. NAS: Connect

11. NAS: Connect Ack

12. CS voice user plane path


2. RANAP: Initial UE Message (NAS: Paging Response)

Call release is the same as for MO calls.


PS Call Flow: PS Call Establishment (PDP Context Activation)

6. NAS: Activate PDP Context Request

UE SGSN H-BSR GGSN BSG




Server

2. RANAP: Initial UE Message (NAS: Service Request)



5. RANAP: Common Id


BPG



7. GTP: Create PDP Context Request

Iu-PS GTP-U Tunnel

7. IP Address Allocation

16. PS user plane path

7. GTP: Create PDP Context Response


9. NAS: Activate PDP Context Accept

Gn GTP-U Tunnel Air Interface Internet

8. DPAT: GTP-U Binding

Iu-PS GTP-U Tunnel




5 Handover


CS Call Flow: CS Relocation FEMTO-BSR Cell -> UMTS Macro Cell

UE H-BSR BSG 3G-MSC UTRAN

4. RANAP: Relocation Request Request

3. RANAP: Relocation Required

4. RANAP: Relocation Request Ack

5. RANAP: Relocation Command

6. RRC: Radio Bearer Reconfiguration

2. HO Trigger

BVG

1. CS Call is established

7. Air interface synchronisation


9. Radio Bearer Reconfiguration Complete

8. RANAP: Relocation Detect


12. Delete User Plane Binding

10. RANAP: Relocation Complete


CS Call Flow: CS Relocation FEMTO-BSR Cell -> GSM Macro Cell Core Network Radio Access Network

Inter-RAT HO triggered within

the BSR

BTS BSR BSC 3G-MSC

Relocation Required

Handover Request

HO Req Ack (incl. HO Command)

Handover from UTRAN Command (incl. GSM HO Command)

Handover Access (with HO Reference No)

Physical Information

SABM

UA

Handover Detect

Establish Indication

Handover Detect

Handover Complete Handover Complete

IU Release Command

IU Release Complete

2G-MSC

MAP-Prep-Handover req.

MAP-Prep-Handover resp.

MAP-Process-Access-Sig req.

MAP-Send-Access-Signal

req.

Answer

UE

Channel Activation Ack

Channel Activation Procedure

(with HO Reference No)

Relocation Command

(incl. GSM HO Command)


PS Call Flow: PS Call Drop (Session Re-establishment in 2G)

•UE •VAP•BSS •New 2G-SGSN

•4. Routing Area Update Request •4. Routing Area Update Request

•Old 3G-SGSN

•5. SGSN Context Request

•GGSN

•6. SGSN Context Response (including PDP context)

•7. SGSN Context Acknowledge

•9. Update PDP Context Response

•8. Update PDP Context Request

•2G- and 3G-SGSN performs GPRS Location Update with the HLR (not shown)

•UE enters idle mode and re- selects to GSM

•10. Routing Area Update Accept

•11. Routing Area Update Complete

•BSS packet Flow Context Procedure

•VAP cell looses Connection with UE•1. Iu Release Request

•2. Iu release Command

•3. Iu Release Complete•Release Radio resources


CS Call Flow: CS Active Call Redirect when Femto is at full capacity (Part 1)

UE 1 VAP 3G-MSC 1BSG

1. RRC Connection Request

17. RRC Connection Setup

18. RRC Connection Complete

Idle

3G-MSC 2 UTRANUE 2

existing CS voice call

Cell-DCH

2. RANAP:Relocation RequiredRELATING TO UE 1 3. MAP: Prepare Handover req.

4. RANAP: Relocation Request


7. MAP: Prepare Handover resp.

8. RANAP: Relocation Command9. RRC: Radio Bearer Reconfiguration

UL sync lost

UL sync achieved



11. MAP: Process Access Sig req.

12. RRC: Radio Bearer Reconfiguration Complete

14. MAP: Send Access Sig req.

15. RANAP: Iu Release CommandRELATING TO UE 1

16. RANAP: Iu Release Complete RAB Assignment etc…. for UE 1, now on macro network

Cell-DCH


CS Call Flow: CS Active Call Redirect when Femto is at full capacity (Part 2)

20. RANAP: Initial UE Message (NAS: CM Service Request)







28.RANAP: UL DT (NAS: Setup)

29. RANAP: DL DT (NAS: Call Proceeding)

26. RANAP: Common ID

19. RRC: Initial Direct Transfer(NAS message)

27. RRC: UL DT (NAS: Setup)

30. RRC: DL DT (NAS: Call Proceeding)

32. RANAP: RAB Assignment Response RELATING TO UE 2

3G-MSC 2 UTRANUE 2

UE 2 call completes on VAP



PS Call Flow: PS Active Call Redirect when Femto is at full capacity (Part 1)



1. RRC Connection Request

17. RRC Connection Setup

18. RRC Connection Complete

Idle

3G-MSC 2 UTRANUE 2

existing CS voice call

Cell-DCH

2. RANAP:Relocation RequiredRELATING TO UE 1 3. MAP: Prepare Handover req.



7. MAP: Prepare Handover resp.

8. RANAP: Relocation Command9. RRC: Radio Bearer Reconfiguration

UL sync lost

UL sync achieved



11. MAP: Process Access Sig req.


14. MAP: Send Access Sig req.

15. RANAP: Iu Release CommandRELATING TO UE 1

16. RANAP: Iu Release Complete RAB Assignment etc…. for UE 1, now on macro network

Cell-DCH


PS Call Flow: PS Active Call Redirect when Femto is at full capacity (Part 2)

20. RANAP: Initial UE Message (NAS: Service Request)


UE 1 VAP BSG





28.RANAP: UL DT (NAS: Activate PDP Context Request)

26. RANAP: Common ID

19. RRC: Initial Direct Transfer(NAS message)

27. RRC: UL DT (NAS: ActivatePDP Context Request)


3G-MSC 2 UTRANUE 2

UE 2 call completes on VAP


SGSN 1

22. RANAP: DL DT (NAS PDP Context Accept)23. RRC: DL DT(NAS PDP

Context Accept)


A Appendix

Non-BCR2.1 Call Flows


PS Call Flow: PS Relocation Femto-BSR Cell -> UMTS Macro Cell

14. Delete User Plane Binding

UE H-BSR BSG SGSN UTRAN

4. RANAP: Relocation Request Request





2. HO Trigger

BPG

1. PS Call is established

9. Air interface synchronisation


11. Radio Bearer Reconfiguration Complete 10. RANAP: Relocation

Detect



7. RANAP: Forward SRNS Context 8. RANAP: Forward

SRNS Context


PS Call Flow: Cell change Order (Femto cell to 2G cell)

•UE •VAP•BSS •New 2G-SGSN

•4. Routing Area Update Request •4. Routing Area Update Request

•Old 3G-SGSN

•5. SGSN Context Request

•GGSN

•6. SGSN Context Response (including PDP context)

•7. SGSN Context Acknowledge

•9. Update PDP Context Response

•8. Update PDP Context Request

•2G- and 3G-SGSN performs GPRS Location Update with the HLR (not shown)

•UE enters idle mode and re- selects to GSM

•10. Routing Area Update Accept

•11. Routing Area Update Complete

•BSS packet Flow Context Procedure

•VAP cell looses Connection with UE•1. Iu Release Request

•2. Iu release Command

•3. Iu Release Complete•Release Radio resources


CS Call Flow: CS Relocation UMTS Macro Cell -> Femto-BSR Cell

2. HO Trigger




UE BVG MSC UTRAN BSG H-BSR

9. Air interface synchronization

13 RANAP: Iu Release Complete

10, RANAP: Relocation Detect


1. CS Call established in UMTS






5. User Plane Binding


PS Call Flow: PS Relocation UMTS Macro Cell -> Femto-BSR Cell

2. HO Trigger

13 RRC: Radio Bearer Reconfiguration Complete

15 RANAP: Iu Release Command


UE BPG SGSN UTRAN BSG H-BSR

11.Air interface synchronization

15 RANAP: Iu Release Complete

12 RANAP: Relocation Detect

14 RANAP: Relocation Complete

1. PS Call established in UMTS






5. User Plane Binding

9. RANAP: Forward SRNS Context

10. RANAP: Forward SRNS Context


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Documents

Femtocell-BSR Call Flows BCR2 1 v03