Method and apparatus for wireless data transfer
AssigneeMotorola, Inc.
InventorsS. David Silk, Jeffrey A. Dykstra, Bruce C. Eastmond
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Abstract
A method and apparatus for wirelessly transmitting data between two devices (101. 102) is provided herein. During data transmission, a data and a strobe signal are transmitted simultaneously on the I and Q-channels, respectively, of over-the-air interface. More particularly, QPSK modulation is utilized, with the strobe signal being transmitted via the I-channel, and the data signal being transmitted via the Q channel, (or vice versa). Additionally, illegal constellation transitions are utilized to signal the transmission of control information.
Claims7
A method for wirelessly transmitting data, the method comprising the steps of:
- receiving strobe information;
- receiving data;
- modulating the strobe information and the data such that the strobe information exists only on a Q channel and the data exists only on an I channel, or vice versa;
- intentionally transmitting illegal constellation transitions that are used to signal a pending exchange of interface management/control information;
- and
- wirelessly transmitting the interface management/control information after the transmission of the illegal constellation transitions.
A method for receiving wirelessly-transmitted data, the method comprising the steps of:
- receiving modulated data/strobe information comprising an I and a Q channel transmitted over an over-the-air interface, wherein the data is contained only on the I channel and the strobe information is contained only on the Q channel, or vice versa;
- detecting an illegal constellation transition in the I channel and Q channel;
- wherein the detection of the illegal constellation transitions cause control circuitry to identify the data/strobe information as control information;
- and
- receiving the control data after the detection of the illegal constellation transition.
An apparatus for receiving wirelessly-transmitted data, the apparatus comprising:
- a receiver having modulated data as an input, wherein the modulated data comprises an I channel containing only a data stream, and a Q channel containing only strobe information, or vice versa, the receiver additionally receiving illegal constellation transitions;
- and
- an absence determiner determining when an illegal constellation transition occurs wherein the illegal constellation transition causes a control circuitry to identify the data/strobe information as control information and wherein the receiver then receives the control information after receiving the illegal constellation transitions.
Dependencies are inferred from the claim text.