Study And Program Design Of MAC Protocol In The CDPD Airlink Interface

The Medium Access Control (MAC) layer protocol of the Airlink Interface between the Mobile Data Base Station (MDBS) and Mobile End Systems (M-ESs) in Cellular Digital Packet Data (CDPD) is studied firstly. The access method of slotted non-persistent Digital Sense Multiple Access with Collision Detection (DSMA/CD) is described mainly. Secondly, we studied the Error Control technology of CDPD. We put the emphasis on the performance, design and implement of Error Correction Code, RS code. Then, on the basis of study above, we show detailed the implement of MAC protocol both in MDBS and M-ES in TMS320C54x, which include the model and method of implement. Communication test result is attached too. In the reminder of this thesis, we analyze the access performance of MAC by the method of computer simulation.