Patent ID: 9642061
Date: 2017-05-02
CPC Classifications: H04W

Claim:
1. A mobile communication device for access probe handoff, comprising: a transceiver unit configured to perform wireless transmissions and receptions to and from a first cellular station or a second cellular station; and a processor configured to: set the mobile communication device to operate in a selective retransmission mode, wherein an access sub-attempt in the selective retransmission mode is initiated for sending an origination message or a page response message to the First cellular station; detect that a signal quality of the first cellular station is less than a predetermined threshold during the access sub-attempt to the first cellular station, wherein the detected signal quality that is less than the predetermined threshold denotes a failure of a paging channel from the First cellular station; performing probe-handing off, wherein the probe-handling off comprises handing off the mobile communication device from the first cellular station with the failed paging channel to the second cellular station with signal quality that is at least equal to the predetermined threshold, wherein the failure of the paging channel from the first cellular station occurs before the mobile communication device receives an acknowledgement to the origination message or the page response message from the first cellular station; and clear a physical layer buffer for the selective retransmission mode after the probe-handing off, wherein communications between the mobile communication device and the first and second cellular stations are in compliance with a communication protocol of Communication Division Multiple Access 2000 (CDMA 2000) and 1× Evolution-Data Optimized (EV-DO) Revision F technology.