User's Manual

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

4-11

Category Description

(1) When the MS transits from Idle mode to Awake mode, it creates the RNG-REQ message

containing the MAC address and Paging Controller ID and sends it to the RAS.

At this time, the Ranging Purpose Indication field value is set to 0x00 (= Network

Reentry).

(2)~(3) The RAS creates the IM Exit State Change Request message containing the

parameter value contained in the received RNG-REQ message, and sends it to the

ACR. After the ACR checks the Idle mode state information for the MS, to perform the

QCS procedure, the ACR sends the RAS the IM Exit State Change Response

message containing the Idle Mode Retain information and the AK Context information

for CMAC authentication, etc.

(4)~(5) To set a data path (UL) with the ACR, the RAS sends the ACR the Path Registration

Request message containing the data path information, such as the GRE key.

As a response (DL) to this message, the ACR sends the RAS the Path Registration

Response message containing the data path information, such as the GRE key.

(6) The RAS responds with the RNG-RSP message containing the HO Optimization flag

and the related CID_Update and SA-TEK_Update information for QCS.