User's Manual

Mobile WiMAX RAS SPI-2L10 System Description/Ed.00
© SAMSUNG Electronics Co., Ltd.
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Inter-ASN Handover (Inter-ASN HO): CSN-Anchored Mobility
Below is described the inter-ASN HO in the CSN-anchored mobility. The anchor function
is relocated from the S-ACR (Serving ACR) to the T-ACR (Target ACR).
The CSN-anchored mobility method consists of the steps through which ASN-anchored
mobility Ho is performed and the authenticator and DPF anchor are relocated to the target
ACR. For convenience, the triggering of relocation by T-ACR is defined as Pull mode, and
the triggering of relocation by S-ACR is defined as Push mode. The Mobile WiMAX
system supports both pull mode and push mode.
The CSN-anchored mobility method complies with the MIP standard. The earlier steps of
the CSN-anchored HO signaling procedure are the same as in the ASN-anchored mobility
HO procedure. The figure below shows the steps after the ASN-anchored HO has been
performed.
Figure 4.14 Inter-ASN Handover (CSN-Anchored Mobility)
MS T-RAS T-ACR
S-
A
CR
(Anchor)
Inter-ASN HHO
1) Relocation Notify
2) Relocation Notify Ack
3) Relocation Request
4) Relocation Response
Pull
Model
Push
Model
10) Anchor DPF HO Trigger
11) Anchor DPF HO Request
12) MIP REG REQ
13) MIP REG RSP
16) MIP REG REQ
17) MIP REG RSP
14) Agent Advertisement
15) CMIP REG REQ
18) CMIP REG RSP
19) Anchor DPF HO Response
24) Diameter: STR
25) Diameter: STA
Pull Mode
5) Re-authentication
21) Registration Revocation Ack
6) Relocation Confirm
7) Relocation Confirm Ack
8) Context Report
9) Context Ack
HA
AAA
22) Diameter: ACR/RADIUS: Accounting Request stop
23) Diameter: ACA/RADIUS: Accounting Response stop
PMIP Re-registration
CMIP Re-registration
20) Registration Revocation Reques
t