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User Manual
Airbridge cBTS3612 CDMA Base Station
R-ACH
Figure 4-12 Configuration of reverse physical channel
R-ACH (Reverse Access Channel)
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R-ACH is used by MS to originate the communication with BTS, and respond to
paging channel message. MS uses random access protocol to originate access
procedure. Regarding each of the supported paging channel, Maximum 32 access
channels can be supported.
R-TCH (Reverse Traffic Channel)
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R-TCH is used by MS to send the user information and signaling information in the
course of the call.
In the configuration of RC1~RC2, R-TCH can be sub-divided into:
R-FCH (Reverse Fundamental Channel), and
R-S CCH (Reverse Supplemental Code Channel).
In the configuration of RC3~RC4, R-TCH can be sub-divided into:
R-PICH (Reverse Pilot Channel) assisting BTS to capture MS and improve receiving
performance,
R-DCCH (Reverse Common Control Channel) used to bear traffic information and
signaling information,
R-FCH (Reverse Fundamental Channel) used to bear traffic information,
R-SCH (Reverse Supplemental Channel) used to bear the traffic information, and
Reverse CDMA channel
R-TCH
R-EACH
( RC1~2)
R-FCH
R-PICH
0~7
R-EACH
R-SCCH
4-20
R-TCH
R-CCCH
(RC3~4)
R-PICH
R-PICH
0~1
R-CCCH
R-DCCH
0~1
R-FCH
0~2
R-SCH
R-PC
Subchannel
System Description
4 System Function
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