Patent ID: 8964737
Filing Date: 2015-02-24
Classification: H04B,H04W

Abstract:
1. A wireless communication circuit for controlling a switching circuit of a wireless communication device, wherein the wireless communication device comprises a plurality of antennas, the wireless communication circuit comprising: a transceiver for receiving and transmitting network packets; a control circuit, coupled with the transceiver, for controlling the switching circuit to switch the transceiver among the plurality of antennas so that the transceiver receives a preamble of a first network packet; and a receiving signal strength detector, coupled with the transceiver and the control circuit, for respectively detecting receiving signal strength values of the plurality of antennas with respect to respective receiving periods of the plurality of antennas while the transceiver receives the preamble; wherein, if each of the receiving signal strength values of the plurality of antennas is less than a predetermined threshold, then the control circuit selects an antenna with a maximum receiving signal strength value as a target antenna and controls the switching circuit to couple the transceiver with the selected target antenna so that the transceiver receives a remaining portion of the first network packet including a header and a payload of the first network packet through the target antenna; wherein the control circuit establishes a receiving signal strength mapping between each of the antennas and each of packet sources of received packets according to detection results of the receiving signal strength detector, and then the control circuit selects a packet source corresponding to a minimum receiving signal strength value as a target packet source and selects an antenna having a greatest receiving signal strength value with respect to the target packet source out of the plurality of antennas as a standby antenna for detecting network packets.