Samsung Mobile WiMAX Outdoor RAS SPI-2331, System Description

Page: 65 / 96

CHAPTER 4. Message Flow
4-8 © SAMSUNG Electronics Co., Ltd.
(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 status is changed to Idle Mode, the RAS notifies the charging
termination message to the AAA server and updates the charging information in
the AAA server.
Awake Mode
Æ
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
Q
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.
MS RAS ACR
2) MOB_SLP-RSP
1) MOB_SLP-REQ
Awake
Sleep
3) MOB_TRF-IND
4) BW Request Header
Awake
DL Traffic