Samsung Mobile WiMAX Outdoor RAS SPI-2331, System Description

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Mobile WiMAX Outdoor RAS SPI-2331 System Description/Ed.02
© SAMSUNG Electronics Co., Ltd. 4-11
4.1.4 Location Update
Inter-RAS Location Update
The following is the location update procedure when the MS moves to other paging group
in the same ACR.
Figure 4.7 Inter-RAS Location Update Procedure
Classification Description
(1) When the Idle Mode MS in the paging group 1 moves to the paging group 2,
it receives the PAG-ADV message and recognizes that the location has been
changed.
(2)~(3) The MS transmits the RNG-REQ message to a new RAS(RAS 2) including the
MAC address, the Location Update Request, and the Paging Controller ID and
the RAS 2 transmits the Location Update Request message to the ACR.
(4)~(5) The ACR transmits the Location Update Response message including the
paging information and the AK Context information to the RAS 2.
The RAS 2 checks the CMAC validation and transmits the RNG-RSP message
including the LU Response to the MS, and notifies that the location update
procedure has been completed by transmitting the LU Confirm to the ACR.
(6)~(7) The RAS notifies the new CMAC_KEY_COUNT value updated by MS to the
ACR, which is an authenticator.
(8) The ACR receives the LU Confirm message and is notified that the location
update procedure is completed.
MS
RAS 1
(PG 1)
ACR
1) MOB-PAG_ADV
5) RNG-RSP
(Location Update Response)
RAS 2
(PG 2)
1) MOB-PAG_ADV
2) RNG-REG
(Location Update Request, Paging Controller ID)
3) LU Request
4) LU Response
6) CMAC_Key_Count_Update
7) CMAC_Key_Count_Update
8) LU Confirm Ack