Patent ID: 8009691
Filing Date: 2011-08-30
Classification: H04W

Abstract:
1. A device for switching between two networks according to network indications comprising: a control module, configured to analyze a network switching indication, received through a current access network and control a switch operation between a Code Division Multiple Access 2000 1x (CDMA2000) modem and a High Rate Packet Data (HRPD) modem; a keyboard, including an “accept” key, which is configured to accept the network switching indication received through the current access network and a “reject” key, which is configured to reject the network switching indication received through the current access network; a CDMA2000 modem, configured to perform encoding and decoding of service data, encoding and decoding of signaling, spectrum spreading and de-spreading of a physical channel, and modulating and demodulating; a HRPD modem, configured to perform encoding and decoding of service data, encoding and decoding of signaling, spectrum spreading and de-spreading of the physical channel, and modulating and demodulating; a memory, configured to save data necessary for normal operation of a dual-mode Access Terminal (MS/AT); a switching unit, configured to connect a radio module with the CDMA2000 modem or the HRPD modem under control of a signal from the control module; and a radio module, configured to connect with the modems through the switching unit, perform conversion between baseband digital signals and Radio Frequency (RF) analog signals and receive and transmit the RF analog signals through an antenna, wherein the MS/AT receives a 1x call arrival message from a Mobile Switching Center (MSC) and the MSC starts a timing clock while sending the 1x call arrival message to a Packet Control Function (PCF), the timing clock is divided into a first clock and a second clock, the first clock stops after the MSC receives a 1x call response message from the MS/AT through an HRPD network and the second clock stops after the MSC receives a 1x call rejection message through the HRPD network.