Forward and Reverse

Now i'll try to explain more about message transfer in CDMA network. The method of communicating between system & user in cellular system is basically similar. There is Forward / Transmit part and Reverse/ receive.

Forward is refer to transport of message from network to Cellphone (mobile).




Reverse is refer to transport of message from Cellphone (mobile) to network.



In CDMA 2000 1x , there are additional channel to improve it's capacity and speed in data communication.

The following graphic shows the differences between IS95 and 2000 1x. Suplementary channel (sch) in CDMA 2000 1x system is use to handle packet data communication with speed aprox. 156.3 kbps .