User's Manual

Mobile WiMAX Outdoor RAS SPI-2210 System Description/Ed.05

(Continued)

Classification Description

(6)~(8)

If the Network re-entry from the MS is not transmitted until the Idle Resource

Retain timer expires, the RAS performs the Data Path (DP) Release procedure

with the ACR.

(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 (if the Diameter protocol is used). If the RADIUS protocol is used, no

accounting report is made when the MS has been transited to Idle mode. Then

when the MS is returned to Awake mode, the accounting information is updated

at the specified interim interval using the Accounting Request interim message.

Awake Mode  Sleep Mode

The Awake Mode and the Sleep Mode of the MS can be classified only by the RAS, and

the ACR does not classified the two kinds of status, and recognizes and manages both of

them as the Awake Mode.

Figure 4.5 Awake Mode  Sleep Mode Status Change Procedure

Classification Description

(1)~(2)

If the MS does not transmit/receive the data for a certain time (set by the

MS/RAS as the parameter), timeout is generated in its own timer, thus the mode

is changed from the Awake Mode to the Sleep Mode. Then, the MS transmits the

MOB_SLP-REQ message to the RAS, and the RAS transmits the MOB_SLP-

RSP message for this, and the status of MS is changed into the Sleep Mode.

(3)~(4)

If the terminating traffic exists in the Sleep Mode MS, the RAS transmits the

MOB_TRF-IND message in the listening period of the corresponding MS, and

the MS which receives this, sets the BW value as 0 in the UL BW Request and

transmits it to the RAS. The RAS receives this message and recognizes that the

status of MS has been changed into the Awake Mode, and transmits the traffic to

the MS.

2) MOB_SLP-RSP

1) MOB_SLP-REQ

Awake

Sleep

3) MOB_TRF-IND

4) BW Request Header

Awake

DL Traffic

MS RAS ACR