Patent ID: 8213881

Claim:
A wireless signal processing circuit for communicating with a network, the network supporting data transmission via a first band or a second band, the signal processing circuit comprising: a first signal transmission module, for communicating with a network device utilizing the first band; a detecting module, for detecting whether the second band complies with a predetermined condition when the first transmission module communicates with the network device utilizing the first band and for generating a detecting result; a second signal transmission module, for communicating with the network device via the second band when the detecting result represents that the second band does not comply with the predetermined condition, so that the signal processing circuit is capable of communicating with the network device utilizing both the first band and the second band; and a transmission time period detecting module, coupled to the first signal transmission module, for detecting an average transmission time period of at least one packet when the first transmission module communicates with the network device utilizing the first band, wherein if the average transmission time period is less than a predetermined value, the second signal transmission module is allowed to communicate with the network device utilizing the first band; wherein the first band is different from the second band.