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Inter-ASN Handover: ASN-Anchored Mobility
Inter-ASN handover is divided into the ASN-anchored mobility method via the R4
interface and the CSN-anchored mobility method via the R3/R4 interface. The following
figure indicates the inter-ASN handover procedure of the ASN-anchored mobility method,
the Serving ACR(S-ACR) performs the anchor function.
MS
1) MOB-MSHO-REQ
8) MOB-BSHO-RSP
12) MOB-HO-IND
AK Context Transfer
R4 Data Path Setup
The HO signaling procedure is the same with the inter-RAS handover procedure, however
in the HO signaling procedure, the procedure of exchanging the HO signaling message via
the R4 interface is added between the S-ACR and the Target ACR(T-ACR).
© SAMSUNG Electronics Co., Ltd.
Mobile WiMAX Outdoor RAS SPI-2331 System Description/Ed.02
S-RAS
S-ACR
2) HO-Request
6) HO-Response
7) HO-Response
9) HO-Ack
13) HO-Confirm
14) HO-Confirm
16) Fast Ranging IE()
18) Context-Request
19) Context-Report
23) HO-Ack
25) Path Pre-Reg Request 24) Path Pre-Reg Request
26) Path Pre-Reg Response
29) Path Pre-Reg Ack 28) Path Pre-Reg Ack
32) Path Reg Request
33) Path Reg Response
36) Path Reg Ack
38) MAC PDU with SN Report Header(Opt.) or BW Request with 0(Opt.)
40) HO-Complete
41) HO-Complete
43) CMAC_COUNT_
44) CMAC_COUNT_
46) Path De-Reg Request
47) Path De-Reg Response
Figure 4.11 Inter-ASN Handover (ASN-Anchored Mobility)
T-ACR
3) HO-Request
4) HO-Request
5) HO-Response
10) HO-Ack
11) HO-Ack
15) HO-Confirm
17) Context-Request
20) Context-Report
22) HO-Ack
21) HO-Ack
27) Path Pre-Reg Response
30) RNG-REQ
31) Path Reg Request
34) Path Reg Response
35) Path Reg Ack
37) RNG-RSP
39) HO-Complete
42) CMAC_COUNT_UPDATE
UPDATE
45) CMAC_COUNT_UPDATE Ack
UPDATE Ack
T-RAS1
T-RAS2
4-17
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