Dynamic bandwidth switching for reducing power consumption in wireless communication devices

A computer program product for wireless communications, comprising:

• a non-transitory computer-readable medium having program code recorded thereon, the program code including:
• code for causing a receiver to receive a control signal having a first bandwidth;
• and
• code for causing the receiver to receive a data signal having a second bandwidth wider than the first bandwidth,
• wherein the control signal and the data signal are received over a single carrier frequency, wherein the control signal comprises an indication of a characteristic of the data signal, wherein the data signal is transmitted after the control signal such that the data signal and control signal are separated by a time interval, and wherein the time interval is based on a switching latency of the receiver.

A mobile device comprising:

• an adjustable radio-frequency (RF) front end configured to:
• receive a control signal having a first bandwidth;
• and
• receive a data signal having a second bandwidth wider than the first bandwidth,
• wherein the control signal and the data signal are received over a single carrier frequency, wherein the control signal comprises an indication of a characteristic of the data signal, wherein the data signal is transmitted after the control signal such that the data signal and control signal are separated by a time interval, and wherein the time interval is based on a switching latency of at least the adjustable RF front end.

A wireless communications apparatus comprising:

• an amplifier,
• an analog-to-digital converter (ADC);
• an analog filter coupled between the amplifier and the ADC;
• and
• a control processor coupled to the amplifier, the ADC, and the analog filter, wherein the control processor is configured to:
• transmit a capability message indicating at least a switching latency of the wireless communication apparatus;
• in response to receiving control information from control signal having a first bandwidth:
• set a bandwidth of the amplifier and the ADC to a second bandwidth wider than the first bandwidth;
• and
• set a sampling rate of the ADC according to the second bandwidth,
• wherein the switching latency is associated with the setting the bandwidth of the amplifier and the ADC to the second bandwidth and the setting the sampling rate of the ADC according to the second bandwidth.

A wireless communication apparatus comprising:

• a control processor configured to:
• couple to a radio frequency (RF) front end:
• transmit, via the RF front end, a capability message indicating at least a switching latency of the RF frontend;
• adjust the RF front end to receive a control signal having a first bandwidth;
• and
• adjust the RF front end to receive a data signal having a second bandwidth wider than the first bandwidth, wherein the control signal and the data signal are received over a single carrier frequency, and wherein the switching latency is associated with the adjusting the RF front end to receive the data signal having the second bandwidth.