User's Manual

Mobile WiMAX RAS SPI-2L10 System Description/Ed.00

4-15

Category Description

(1)~(2) When the paging group changes, the MS sends the RNG-REQ message containing

the MAC address, location update request, paging controller ID to the new T-RAS

(Target RAS) to request a location update. The T-RAS sends its default ACR the

Location Update Request message containing the paging controller ID.

(3)~(5) If the received paging controller ID belongs to the T-ACR (Target ACR), it sends the

Location Update Request message to the previous S-ACR (Serving ACR) via the R4

interface to change the paging controller. At this time, the APC Relocation Destination

value in the Location Update Request message is set to the paging controller ID of

the T-ACR.

The S-ACR responds with the Location Update Response that indicates whether to

accept the paging controller relocation and the context information for the MS.

(6), (11) When receiving the Location Update Response message, the T-RAS sends the MS

the RNG-RSP message containing ‘LU Response = Success’ and sends the LU

Confirm message to confirm that the paging controller has changed to the T-ACR.

(7)~(10) The T-RAS notifies the S-ACR, which is the authenticator, of the new

CMAC_KEY_COUNT value updated by the MS.

(12)~(14) After the location update confirmation, the T-ACR notifies the FA and authenticator,

which are still located in the S-ACR, that the paging controller has changed.

(15)

The T-ACR sends the S-ACR an FA relocation request for the MS.

(16)~(18) When the S-ACR accepts the FA/DPF relocation request received from the T-ACR,

the T-ACR/RAS requests that the MS perform paging to trigger the relocation.

(19)~(34) When receiving the MOB_PAG-ADV message, the MS performs the QCS procedure,

a network reentry procedure, with the network.

(35)~(37) This is the procedure for relocating the authenticator from the S-ACR to the T-ACR.

The T-ACR triggers the MS to perform the EAP authentication procedure again with

the AAA server and notifies the S-ACR of the authentication result to complete the

authenticator relocation procedure.

(38)~(39) The T-ACR sends the S-ACR an Anchor DPF relocation request for the MS.

(40)~(41)

When the MS uses PMIP, the T-ACR, in place of the MS, registers MIP to the HA.

(42)~(46) When the MS uses CMIP, the ACR operates only as an FA, and the MS registers MIP

to the HA directly.

(47)~(48) If the anchor DPF relocation has finished successfully, the S-ACR releases the

existing connections to the AAA server and HA.