User's Manual

Mobile WiMAX RAS SPI-2L10 System Description/Ed.00
© SAMSUNG Electronics Co., Ltd.
4-21
Inter-ASN Handover (HO): ASN-Anchored Mobility
Inter-ASN HO is divided into the ASN-anchored mobility method through the R4 interface
and the CSN-anchored mobility method through the R3/R4 interface. The figure below
shows the inter-ASN handover procedure in the ASN-anchored mobility method.
The S-ACR (Serving ACR) carries out the anchor function.
Figure 4.13 Inter-ASN Handover (ASN-Anchored Mobility)
35) Path Reg Ack
MS S-RAS T-ACR T-RAS1 T-RAS2
1) MOB-MSHO-REQ
S-ACR
AK Context Transfer
2) HO-Request
3) HO-Request
4) HO-Request
5) HO-Response
6) HO-Response
7) HO-Response
8) MOB-BSHO-RSP
9) HO-Ack
10) HO-Ack
11) HO-Ack
12) MOB-HO-IND
13) HO-Confirm 14) HO-Confirm
15) HO-Confirm
21) Context-Request 20) Context-Request
22) Context-Report
23) Context-Report
17) HO-Ack 16) HO-Ack
18) HO-Ack
R4 Data Path Setup
25) Path Pre-Reg Reques
t
26) Path Pre-Reg Response
29) Path Pre-Reg Ack
28) Path Pre-Reg Ack
19) Fast Ranging IE ()
30) RNG-REQ
37) RNG-RSP
38) MAC PDU with SN Report Header (Opt.) or BW Request with 0 (Opt.)
40) HO-Complete
39) HO-Complete
41) HO-Complete
46) Path De-Reg Request
47) Path De-Reg Response
42) CMAC_COUNT_UPDATE
45) CMAC_COUNT_UPDATE Ack
43) CMAC_COUNT_UPDATE
44) CMAC_COUNT_UPDATE Ack
32) Path Reg Request
36) Path Reg Ack
24) Path Pre-Reg Request
27) Path Pre-Reg Response
34) Path Reg Response
31) Path Reg Request
33) Path Reg Response
48) Path De-Reg Ack