User's Manual

Mobile WiMAX Outdoor RAS SPI-2210 System Description/Ed.05
© SAMSUNG Electronics Co., Ltd. 4-21
Inter-ASN Handover: CSN-Anchored Mobility
The following is handover of the CSN-anchored mobility method among the types of inter-
ASN handover, the anchor function is relocated from the Serving ACR (S-ACR) to the
Target ACR (T-ACR).
CSN-anchored mobility is composed of the process that Authenticator/DPF Anchor is
relocated to the target ACR after ASN-anchored mobility handover is performed.
For convenience, the case that T-ACR triggers the relocation is defined in pull mode and
the other case that S-ACR triggers is in push mode. Samsung’s Mobile WiMAX system
supports both pull mode and push mode.
The CSN-anchored mobility method follows the MIP standard, and the NWG defines the
PMIP and the CMIP for the MIP method. The first part of the CSN-anchored handover
signaling process is the same as the procedure of ASN-anchored mobility handover and the
procedure after the ASN-anchored handover is as follows:
Figure 4.13 Inter-ASN Handover (CSN-Anchored Mobility)
MS
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
11) Anchor DPF HO
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
H
A
AAA
22
)
Di
a
m
e
t
e
r: A
C
R
/
RADI
US
: A
ccou
ntin
g
R
eques
t
s
t
op
23) Diameter: ACA/RADIUS: Accounting Response stop
PMIP Re-registration
CMIP Re-registration
20) Registration Revocation Request
T-RAS
T
-
A
CR