Patent ID: 9585065
Date: 2017-02-28
CPC Classifications: H04W

Claim:
1. A method for inter-radio access technology (inter-RAT) performance enhancement in a mobile communications device, comprising: camping on a first RAT to perform a first service; moving/falling back to a second RAT from the first RAT to perform a second service; measuring and collecting cell information of the first RAT during the performance of the second service in the second RAT; and determining a first cell to return to the first RAT according to the collected cell information of the first RAT after a channel connection of the second RAT is released, wherein measuring and collecting cell information of the first RAT further comprises periodically measuring available cells of the first RAT, synchronizing with the available cells and collecting system information received from the available cells, and the method further comprises recollecting the system information received from the available cells in a predetermined time period and adding the recollected cell information to a measurement list for further measurement.