Patent ID: 8155695

Claim:
A portable communication device comprising: a first wireless transceiver operable under a first communication protocol for transmitting and receiving signals; a second wireless transceiver operable under a second communication protocol for transmitting and receiving signals; a controller coupled to the first transceiver and the second transceiver, wherein the controller coordinates transmission and reception of the first transceiver and the second transceiver by limiting transmission of information from the associated access point to the first wireless transceiver to time slots or sub-frames associated with the second wireless transceiver in which the second wireless transceiver does not transmit, wherein the controller causes transmission of a signal from a first radio system to an associated access point such that a downlink acknowledgment signal will be received from the associated access point at the first wireless transceiver during a receive time slot or downlink sub-frame associated with the second wireless transceiver and the controller determines a transmit opportunity end point by calculating: a minimum value of either tRX-SIFS-TUTF-TACK-SIFS or tRX-DTX, where tRX is the starting time of a next Bluetooth receive slot or downlink sub-frame, TACK is the transmission time of an uplink acknowledgement signal at a most robust rate, TUTF is a duration of the uplink trigger frame, and DTX is the duration of the Bluetooth transmit slot or uplink sub-frame, and SIFS is the duration of a short interframe spacing.