ZTE Corporation ZXG-OB06 Manuale Utente
ZXG10 OB06 ZTE Integrated Outdoor GSM Base Station Technical Manual
30
Confidential and Proprietary Information of ZTE CORPORATION
The relevant protocols of the Um interface are as follows:
GSM 04.03 describes the channel structure and access capability of the
Um interface.
Um interface.
GSM 04.04 specifies the physical layer structure of the Um interface.
GSM 04.05 specifies the data link layer protocol for the Um interface.
GSM 04.08 stipulates the layer-3 protocols of the Um interface.
Inter-Cabinet Cascaded Interface of Same
Site
Site
Inter-cabinet star connection is supported at the same site (one site
supports three OB06 cabinets at most).
The data interface between cabinets also employs the standard PCM 2M E1
signal to transfer service, TRM signaling, inter-cabinet O&M signaling and
FN (Frame Number). Service signaling and TRM signaling will be
transparently transmitted, while O&M and FN will be transmitted through
FN (Frame Number). Service signaling and TRM signaling will be
transparently transmitted, while O&M and FN will be transmitted through
the time division HDLC link.
The inter-cabinet data interface format is shown in Figure 14.
F
I G U R E
1 4
D
A T A
I
N T E R F A C E S B E T W E E N
I
N
-
S I T E
C
A B I N E T S
TS0
TS1
TS2
TS3
TS4
TS5
TS6
TS7
TS15
TS16
TS17
TS18
TS31
Downlink interface
between cabinets
0 1 2 3 4 5 6 7
SYNC
CC_COM
Frame No.
O&M operation and
maintenance timeslot
0 1 2 3 4 5 6 7
SYNC
CC_COM
TS0
TS1
TS2
TS14
TS15
TS16
TS17
TS18
TS31
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Uplink interface
between cabinets
Frame No.
Same as Abis interface
O&M operation and
maintenance timeslot
Same as Abis interface
Same as Abis interface
Same as Abis interface
Same as Abis interface
Same as Abis interface
Same as Abis interface
Same as Abis interface
Same as Abis interface
Same as Abis interface
Same as Abis interface
Same as Abis interface
Same as Abis interface
Same as Abis interface