Samsung Mobile WiMAX Outdoor RAS SPI-2331 System Description page 70

Classification
(1)~(2)
(3)~(5)
(6)
(7)~(10)
(11)
(12)~(14)
(15)
(16)~(18)
(19)~(34)
(35)~(37)
(38) ~ (39)
(40)~(41)
(42)~(46)
(47)~(48)
Inter-ASN Location Update
The Inter-ASN location update procedure is the same with the Inter-ACR location update
procedure.
© SAMSUNG Electronics Co., Ltd.
Mobile WiMAX Outdoor RAS SPI-2331 System Description/Ed.02
If the paging group is changed, the MS transmits the RNG-REQ message including
the MAC address, the Location Update Request and the Paging Controller ID to
a new T-RAS(Target RAS). The T-RAS transmits the Location Update Request
message including the Paging Controller ID to its own default ACR.
When the received Paging Controller ID does not belong to the Target ACR
(T-ACR), the T-ACR transmits the Location Update Request message of which
the APC Relocation Destination is set as its own Paging Controller ID to the
previous Serving ACR(S-ACR) via the R4 interface to change the Paging Controller.
The S-ACR responds by using the Location Update Response message including
the information on whether to allow the Paging Controller Relocation and the
Context information of the corresponding MS.
When the T-RAS receives the Location Update Response message, it sets as
'LU Response=Success', transmits the RNG-RSP message to the MS, and
checks if the paging controller is changed into the T-ACR by transmitting the LU
Confirm message.
The T-RAS notifies the new CMAC_KEY_COUNT value updated by the MS to
the S-ACR, which is an authenticator.
The LU Confirm message is sent to confirm that the T-ACR is now the paging
controller.
The T-ACR, after Location Update Confirm, notifies the FA and the Authenticator
which are still located in the S-ACR of that the Paging Controller has been
changed.
The T-ACR requests the FA Relocation for the MS to the S-ACR.
The S-ACR which receives the request of the FA/DPF Relocation from the T-
ACR allows the relocation in the T-ACR, then, the T-ACR/RAS requests paging
to the corresponding MS to trigger the relocation.
The MS which receives the MOB_PAG-ADV message performs the QCS which
is the Network Re-Entry procedure with the network.
This is the procedure to relocate the Authenticator from the S-ACR to the T-ACR,
the T-ACR triggers in order that the MS performs the EAP authentication
procedure with the AAA server, and notifies the S-ACR of the authentication
result, then completes the Authenticator Relocation procedure.
The T-ACR requests the Anchor DPF Relocation for the MS to the S-ACR.
If the MS uses the PMIP, the T-ACR instead of the MS registers the MIP to the HA.
If the MS uses the CMIP, the ACR operates only as the FA, and the MS registers
the MIP in the HA directly.
When the anchor DPF relocation is completed successfully, S-ACR releases the
existing connection with AAA and HA.
Description
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