Patent ID: 8055280

Claim:
A method for a dual-mode Mobile Station/Access Terminal (MS/AT) in a High Rate Packet Data (HRPD) network to respond to a Code Division Multiple Access (CDMA) 1x (“1x”) paging, the method comprising steps of: a) sending a message by a Mobile Switching Center (MSC) of a 1x network via a Packet Control Function (PCF) of a HRPD network to the MS/AT to indicate an arrival of a 1x service call; b) after receiving the message indicating the 1x call, displaying calling party information of the 1x call by the MS/AT to a user and waiting for a choice of the user; c) turning to the 1x network by the MS/AT to send a Page Response Message to a 1x base station (BS) of the 1x network if the user chooses to accept the 1x call; d) if the user chooses not to accept the 1x call, sending a message by the MS/AT to indicate user's refusal to an access network (AN) of the HRPD network, and transferring the message by the AN to the PCF; e) after receiving the message to indicate user's refusal, the HRPD PCF constructing a corresponding Rejection message and sending it to the MSC to inform the MSC to terminate this call; and f) after receiving the Rejection message from the HRPD PCF, the MSC terminating this call and releasing relevant resources; wherein when waiting for the choice of a user, the MS/AT does not turn to the 1x network, and if the MS/AT is in a state of an HRPD connection, no interrupt is caused to the HRPD connection when displaying the calling party number or waiting for the choice of the user.