Patent ID: 8619299

Claim:
A printing system, comprising: a portable communication device; a printing device for receiving a to-be-printed data from said portable communication device, thereby performing a printing task; and plural transmission channels selectively in communication with said portable communication device and said printing device for transferring said to-be-printed data to said printing device, wherein said portable communication device comprises a controlling unit for judging and setting priority values of said transmission channels and selecting one of said transmission channels as a priority transmission channel according to said priority values of said transmission channels, so that said to-be-printed data is transmitted from said portable communication device to said printing device through said priority transmission channel, wherein said priority value of each transmission channel includes a parameter indicating whether the communication between said portable communication device and said printing device is established, a data transmission speed of said transmission channel, data transmission cost of said transmission channel, data transmission stability of said transmission channel, and a combination thereof.