User's Manual

CHAPTER 4. Message Flow

4-8

(Continued)

Category Description

(9)~(10) As the MS has been transited to Idle mode, an accounting end message is sent to

the AAA server to update the accounting information using the ACR/ACA message.

When the Diameter/RADIUS protocols are used, they are operated according to the

Idle Mode Notification on/off. If it is on, the accounting information is updated using

the Diameter ACR/RADIUS Accounting Request message.

Awake Mode Æ Idle Mode (Network-Initiated)

The figure below shows the Network-initiated idle mode transition procedure.

Figure 4.5 Awake Mode Æ Idle Mode State Transition Procedure (Network-Initiated)

Category Description

(1)~(3) If the Dormant timer expires, the RAS creates the IM_Entry_State_Change_Req

message containing the context information for the MS and sends it to the ACR

(Paging Controller). The ACR creates the IM_Entry_State_Change_Rsp message

containing paging information (PAGING_CYCLE, PAGING_OFFSET) and Idle Mode

Retain and sends it to the RAS. At this time, the Idle Mode Retain info is set to 0x7F.

The RAS sends the MS the DREG-CMD message containing the information received.

(4) The MS sends the RAS the DREG-REQ message and sets the De-

Registration_Request_Code field value to 0x02.

(6)~(8) If no network re-entry request is received from the MS until the Idle Resource Retain

timer expires, the BS performs the Data Path (DP) Release procedure with the ASN-GW.

(9)~(10) Now the MS has transited to Idle mode. When the Diameter/RADIUS protocols are

used, they are operated according to the Idle Mode Notification on/off. If it is on, the

accounting information is updated using the Diameter ACR/RADIUS Accounting

Request message.

MS RAS

3) DREG-CMD

4) DREG-REQ

(De-registration_Request_Code

=0x02)

1) IM_Entry_State_Change_Req

2) IM_Entry_State_Change_Rsp

(ActionCode=0x05, Paging Controller ID,

Paging Information)

6) Path_Dereg_Req

7) Path_Dereg_Rsp

8) Path_Dereg_Ack

AAA

9) Diameter:ACR/RADIUS: Accounting Request

10) Diameter: ACA/RADIUS: Accounting Response

5) IM_Entry_State_Change_Ack

‘Idle Mode Noti On’ Case