User's Manual

Mobile WiMAX RAS SPI-2213 System Description/Ed.02

4.1.3 Status Change

Awake Mode Æ Idle Mode

If the data traffic is not transmitted/received for a certain time, the status of MS is changed

from the Awake Mode to the Idle Mode.

Sleep Mode Æ Idle Mode Change

The MS of the Sleep Mode is not changed into the Idle Mode, immediately.

Before being changed from the Sleep Mode into the Idle Mode, the MS is

changed to the Awake Mode, first, and then, after requesting DREG, it is changed

into the Idle Mode.

The deregistration procedure to be changed into the Idle Mode is divided into the MS-

initiated Idle Mode change and the Network-initiated Idle Mode change, and the following

indicates the procedure of the MS-initiated Idle Mode change.

Figure 4.4 Awake Mode Æ Idle Mode Status Change Procedure

Classification Description

(1) When the MS is changed into the Idle Mode, it creates the DREG-REQ message

and transmits it to the RAS, and the value of the De-Registration Request Code

field is set as 0x01.

(2)~(5) The RAS creates the IM_Entry_State_Change_Req message including the

context information of the MS and transmits it to the ACR (Paging Controller),

and the ACR creates the IM_Entry_State_Change_Rsp message including the

Action Code (0 x 05), the paging information (PAGING_CYCLE,

PAGING_OFFSET) and the Idle Mode Retain Flag and transmits the message to

the RAS. The RAS transmits the DREG-CMD including the received information

to the MS.

MS RAS ACR

4) DREG-CMD

1) DREG-REQ

(Code=0x01, Paging Cycle

Request)

2) IM_Entry_State_Change_Req

3) IM_Entry_State_Change_Rsp

(ActionCode, Paging Controller ID,

Paging Information)

6) Path_Dereg_Req

7) Path_Dereg_Rsp

8) Path_Dereg_Ack

AAA

5) IM_Entry_State_Change_Ack

9) Diameter: ACR

10) Diameter: ACA