Wireless system selection based on data connectivity

摘要

The quality of a wireless data connection is used to identify a suitable radio access network on which a wireless multi-mode device camps.

主权项

1. A method performed by a multi-mode communication device (MMD), comprising:
establishing a communication channel with a first radio access network (RAN) by the MMD, the communication channel including at least a voice connection, wherein the first RAN operates according to a first radio access technology (RAT); establishing a first data connection with the first RAN, wherein the first data connection is separate from the voice connection; determining a quality of the first data connection on the first RAN, wherein determining the quality of the first data connection comprises comparing a speed of the first data connection to a pre-determined data channel speed threshold value; determining a second RAT that transfers data at a faster speed than the first RAT; searching for a second RAN that operates according to the second RAT during a background operation by periodically polling a status of the second RAN while the first data connection is active; and establishing a second data connection on the second RAN by the MMD when the speed of the first data connection on the first RAN falls below the pre-determined data channel speed threshold value.