Abstract: A method to provide timely and accurate control channel information to an Access Network is disclosed to facilitate power control and data packet transmission. Upon receiving a packet error from the Access Network, an Access Terminal transmits a Packet-Error-Triggered (PET) control channel information to the Access Network. The PET control channel information may contain the same type of information as those contained in the regular periodical control channel information. Alternatively, the PET control channel information may contain a different type of information from those contained in the regular periodical control channel information. The PET control channel information may be transmitted using channel gain higher than that used for the regular periodical control channel information to improve its reliability at the Access Network receiver. The PET control channel information can also be utilized to improve the performance of decoding the Reverse Acknowledgement Channel (R-ACKCH).