User Manual
Airbridge cBTS3612 CDMA Base Station
System Description
4 System Function
4-8
10) After receiving service connection message, MS responds with one service
connection complete message.
11) BSC sends “A9-Setup-A8” message to PCF, to request to establish A8
connection.
12) PCF sends “A11-Registration -Request” to PDSN, to request to establish A10
connection.
13) PDSN accepts A10 connection establishment request, and returns
“A11-Registration-Reply” message to PCF.
14) PCF returns “A9-Connect-A8” message to BSC; connection between A8 and
A10 is established.
15) After both radio traffic channel and terrestrial circuit are established, BSC
sends assignment complete message to MSC.
16) MS negotiates with PDSN to establish PPP connection cooperatively. In the
case of Mobile IP access, Mobile IP connection will be established. PPP
message and Mobile IP message are transmitted in traffic channel, and are
transparent to BSC/PCF.
17) After PPP connection is established, the data service will enter connection
state.
II. SCH establishment
This section describes MS-originated Supplemental Channel (SCH) establishment
procedure, as for BSC-originated SCH establishment procedure, it is similar to
MS-originated SCH establishment procedure which differs in the trigger condition.
There is no special SCH release procedure when dynamically assigning S CH,
instead, BSC will determines SCH rate and duration, once the time is due, SCH will
be released. MS-originated SCH establishment procedure is shown in Figure 4-7.
