Zte ZXG10 OB06, Technical Manual

Page: 60 / 117

ZXG10 OB06 ZTE Integrated Outdoor GSM Base Station Technical Manual
46 Confidential and Proprietary Information of ZTE CORPORATION
The DATA REQ message contains the complete acknowledgment mode L3
transparent message. At the time when the OB06 sends the I frame, the
OB06 starts timer T200 and records the I frame resend times N200. When
T200 expires for N200 times or the REJ frame is received, the OB06 sends
the ERROR IND message to the BSC.
The receiving is shown in Figure 30.
F
I G U R E
3 0 R
E C E I V I N G A
T
R A N S P A R E N T
L 3 M
E S S A G E I N T H E
A
C K N O W L E D G M E N T
M
O D E
MS LAPDm FURRM HPIMan LAPD
BSC OAMM
D m_DL_ DATA_I
ND
DL _DATA _REQ (DATA IND)
(DATA IND)
(I frames)
(RR frames)
The BSC transfers to the BSC the acknowledgment mode L3 transparent
message that is received from MS. The DATA IND message contains the
complete transparent message.
Transmission and Receiving of Transparent L3 Message
in Non-Acknowledgment Mode
The procedure of transmitting a L3 transparent message from the BSC is
shown in Figure 31.
F
I G U R E
3 1 T
R A N S M I T T I N G A
L 3 T
R A N S P A R E N T
M
E S S A G E I N T H E
N
O N
- A
C K N O W L E D G M E N T
M
O D E
MS LAPDm FURRM
HPIman
LAPD
BSC OAMM
D m_DL_UNIT
DATA _REQ
DL_DATA _IND
(UNIT DATA REQ )
(UNIT DATA REQ )
(UI frames)
The BSC requests to send a transparent L3 message in the non-
acknowledgment mode to the MS.
UNIT DATA REQ message contains the complete non-acknowledgment
mode L3 transparent message.