ZTE Corporation ZXG-BTS2 Benutzerhandbuch
Chapter 4 - System Functions
Confidential and Proprietary Information of ZTE CORPORATION 73
Channel Release
1. SACCH deactivation
The procedure of SACCH deactivation is shown in Figure 49.
F
I G U R E
4 9
S A C C H D
E A C T I V A T I O N
MS
LAPD
FURRM
HPIMa
LAPD
BSC
OAMM
Dm_DL_DATA_REQ
(CHAN REL)
DL_DATA_IND (DATA
REQ(CHAN REL))
DATA REQ
(CHAN REL)
(CHAN REL)
(DEACT SACCH)
DL_DATA_IND (DEACT SACCH)
MPH_RRCmdToCHP
(CHP DEACT SACCH)
The BSC releases the SACCH in the BTS according to the (RR)
CHANNEL RELEASE procedure.
When the BSC sends the (RR) CHANNEL RELEASE, it sends the DEACT
SACCH message to the BTS, to command the BTS to stop transmitting
CHANNEL RELEASE procedure.
When the BSC sends the (RR) CHANNEL RELEASE, it sends the DEACT
SACCH message to the BTS, to command the BTS to stop transmitting
the downlink SACCH frame.
The FURRM module sends the related information in the DEACT SACCH
The FURRM module sends the related information in the DEACT SACCH
message to the CHP for processing.
2. Wireless channel release
The wireless channel release procedure is shown in Figure 50.
F
I G U R E
5 0
W
I R E L E S S
C
H A N N E L
R
E L E A S E
MS
LAPD
FURRM
HPIMan
LAPD
BSC
OAMM
(RF CHAN REL)
DL_DATA_IND (RF CHAN REL)
MPH_RRCmdToC
HP (CHP RF
CHAN REL)
MPH_CHPIndToRR (CHP
RF CHAN REL ACK)
DL_DATA_REQ
(RF CHAN REL ACK)
(RF CHAN
REL ACK)