CDMA WIRELESS COMMUNICATION SYSTEMS

摘要

In a communication system wherein a CDMA segment at each access point con sists of multiple sub-segments a three frame transmission time interval (TTI ) with eight retransmissions is utilized for data transmission. The access p oint not only specifies the interlaces to be utilized for data transmission it also assigns packet start interlaces for particular access terminals. An auxiliary pilot channel R-AuxPICH is transmitted by an access terminal along with CDMA data on reverse link. The ratio of R-AuxPICH to R-PICH is varied based on ACK/NACK feedback. A reverse link activity bit (RAB) which can be u sed as an emergency load-control mechanism for non-QoS flows is also disclos ed.