User Manual
Airbridge cBTS3612 CDMA Base Station
System Description
4 System Function
4-10
processing, common channel processing, dedicated channel setup and release,
traffic bearing and power control.
I. Signaling processing on Abis interface physical layer and transmission
layer
Abis interface physical layer utilizes IMA technology. BTS sets up or deletes IMA link
sets.
Abis interface data link layer utilizes ATM link. Signaling is adapted with AAL5 and
traffic is adapted with AAL2.
II. Channel resource management
BTS organizes channel resource with a resource pool and is responsible for the
allocation, release and management of the channel resource.
III. Abis traffic link management
BTS is responsible for assigning traffic link for Abis interface.
IV. BTS logic operation & maintenance
BTS processes the following logic operation & maintenance functions:
l
Resource status indication
l
Cell configuration function
l
General message updating
l
Cell breath control function
l
Cell block/unblock function
l
Radio measurement report function
V. Common channel processing
BTS is responsible for the setup and release of common channels and processing of
common channel messages. Common channels include paging channel, access
channel, etc.
VI. Setup and release of dedicated channel
BTS is also responsible for setup and release of dedicated channels.
VII. Traffic bearing
BTS processes Abis interface protocol, transmits the traffic channel data received
from the air interface to BSC, and transmits the traffic data that received from BSC
on the air interface.
