umts/wcdma call flows for handovers

1111/25/25/25/25

WCDMAWCDMAWCDMAWCDMA HOHOHOHO CallCallCallCall FlowsFlowsFlowsFlowsBy Justin MA Created: June 2014 Updated: 2014_0801Change History:2014_0801: Modify the SRNS Relocation Picture notation in NSN.

2222/25/25/25/25

3333/25/25/25/25

Soft HO after E1A (Intra-RNC)

Ref: Huawei

4444/25/25/25/25

Soft HO after E1B (Intra-RNC)

Ref: Huawei

5555/25/25/25/25

Hard HO in Intra-RNC

moving

Ref: Huawei

6666/25/25/25/25

Soft HO in Inter-RNC

moving

Ref: Huawei

DRNC DRNC

7777/25/25/25/25

Soft HO in Inter-RNCRadio Link Addition (Branch Addition)

Iur

8888/25/25/25/25

UE Node B Drift RNS Drift RNC

Serving RNC

DCH - FP DCH - FP 8. Downlink Synchronisation

RNSAP RNSAP 1. Radio Li nk Setup Request

Start TX description

NBAP NBAP 2. Radio Link Setup

Request

RNSAP RN SAP 4. Radio Link Setup Response

NBAP NBAP 3. Radio Link Setup

Response

Start RX description

Decision to setup new RL

RRC RRC

11. DCCH : Active Set Update Complete

RRC RRC

10. DCCH : Active Set Update [Radio Link Addition]

ALCAP Iur Bearer Setup 5. ALCAP Iub Bearer Setup

DCH - FP DCH - FP 9. Uplink Synchronisation

RNSAP RNSAP 7. Radio Link Restore

Indication

NBAP NBAP 6. Radio Link Restore

Indication

Ref: TR 25.931

Iur

9999/25/25/25/25

Soft HO in Inter-RNCRadio Link Deletion (Branch Deletion) Iur

10101010/25/25/25/25

U E N ode BD rift RN S

D riftR N C

ServingR N C

R R CR R C2. D C C H : A ctive Set U pdate C om plete

D ecision to deleteo ld R L

R N SA P R N SA P

3. R adio Link D eletionR equest

N B A P N B A P

4. R adio Link D eletionR equest

R N SA P R N SA P

6. R adio Link D eletionR esponse

N B A P N B A P

5. R adio Link D eletionR esponse

Stop R X and T X

R R CR R C1. D C C H : A ctive Set U pdate

[Radio Link D eletion]

A LC A P Iur B earer R elease7 . A LC A P Iub B earer R elease

Ref: TR 25.931

Iur

11111111/25/25/25/25

Soft HO in Inter-RNCRadio Link Replacing

Ref: TR 25.931

Iur

12121212/25/25/25/25

Hard HO in Inter-RNC

Ref: Huawei

IurIurIurIur

13131313/25/25/25/25

Ref: Huawei

14141414/25/25/25/25

SRNS Relocation for CS (UE-not-involved)

Ref: NSN

Iur

15151515/25/25/25/25

SRNS Relocation for CS (UE-involved)

Ref: NSN

Iur

16161616/25/25/25/25

SRNS Relocation for PS (UE-not-involved)

Ref: NSN

Iur

17171717/25/25/25/25

SRNS Relocation for PS (UE-involved)

Ref: NSN

Iur

18181818/25/25/25/25

Inter-Frequency Hard Handover

RNSAP RNSAP

1. Radio Link Setup Request

Note 1Note 1Note 1Note 1

UE Node B

Source

Node B Target

RNC Source

RNC target

SRNC

RRC

RRC

12. DCCH : Physical Channel Reconfiguration Complete Note 3Note 3Note 3Note 3

RRC

7. DCCH : Physical Channel Reconfiguration Note 3Note 3Note 3Note 3

RRC

6. ALCAP Iur Data Transport Bearer Setup

Note 1Note 1Note 1Note 1

NBAP NBAP

2. Radio Link Setup Request

NBAP NBAP

3. Radio Link Setup Response

NBAP NBAP

14. Radio Link Deletion Request

NBAP NBAP

15. Radio Link Deletion Response

4. ALCAP Iub Data Transport Bearer Setup

16. ALCAP Iub Data Transport Bearer Release

RNSAP RNSAP

17. Radio Link Deletion Response Note 2Note 2Note 2Note 2

18. ALCAP Iur Data

Transport Bearer Release Note 2Note 2Note 2Note 2

RNSAP

5. RL Setup Response

Note 1Note 1Note 1Note 1

RNSAP

RNSAP 13. Radio Link Deletion Request

Note 2Note 2Note 2Note 2

RNS AP

NBAP NBAP

8. Radio Link Failure Indication

RNSAP

RNSAP 9. Radio Link Failure Indication

Note 2Note 2Note 2Note 2

NBAP NBAP

10. Radio Link Restore Indication

RNSAP

11. RL Restore Indication

Note 1Note 1Note 1Note 1

RNSAP

Ref: TR 25.931

Iur

19191919/25/25/25/25

Service based UTRAN to GSM/BSS Intersystem Handover

UE RNC 3G MSC 2G MSC BSC

6. Relocation Required RANAP

7. Prepare Handover MAP/E

8. Handover Request BSSMAP

9. Handover request Ack BSSMAP

10. Prepare Handover Response MAP/E

11. Relocation Command RANAP

12. Handover from UTRAN Command RRC

13. Handover Detect BSSMAP

14. Handover Complete RR

15. Handover Complete BSSMAP

16. Send End Signal Request MAP/E

17. Iu Release Command RANAP

18. Iu Release Complete RANAP

19. Send End Signal Response MAP/E

1. RAB Assignment Request [Service Handover] RANAP

4. RAB Assignment Response RANAP

2. RB setup RRC

3. RB response RRC

5. RNC decides to make handover

Radio link failure on UTRAN and radio link establishment in GSM/BSS

RANAP

RANAP

RANAP

RANAP

RANAP

RANAP

RRC

RRC

RRC

MAP/E

MAP/E

MAP/E

MAP/E

BSSMAP

BSSMAP

BSSMAP

BSSMAP

RR

Ref: TR 25.931

20202020/25/25/25/25

iRAT-CS-HO WCDMA to GSM

Ref: Huawei

21212121/25/25/25/25

Ref: Ericsson

22222222/25/25/25/25

3G to 2.5G Cell Change Order

Ref: Tekcomms

23232323/25/25/25/25

Ref: Ericsson

24242424/25/25/25/25

Intra-RNC-Inter-NodeB-Inter-Frequency Hard HO

f1

25252525/25/25/25/25

Ref: