A simultaneous wireless information and power transmission method includes: transmitting an energy transfer signal comprising a peak-to-average power ratio (PAPR) corresponding to information to be transmitted at a first side; measuring the PAPR by receiving the energy transfer signal at a second side; and recovering the information from the measured PAPR at the second side.

A simultaneous wireless information and power transmission method includes: transmitting an energy transfer signal comprising a peak-to-average power ratio (PAPR) corresponding to information to be transmitted at a first side; measuring the PAPR by receiving the energy transfer signal at a second side; and recovering the information from the measured PAPR at the second side.

Methods and apparatuses for providing control signals for a transmission from a transmitting device to a receiving device using a mobile communication connection that comprises a voice channel are described. The control signals are used for controlling the operation of the receiving device.

Methods and apparatuses for providing control signals for a transmission from a transmitting device to a receiving device using a mobile communication connection that comprises a voice channel are described. The control signals are used for controlling the operation of the receiving device.

Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine, for a first logical channel, that a first delay threshold for the first logical channel is satisfied. The user equipment may remap data from the first logical channel to a second logical channel, wherein the second logical channel is prioritized over the first logical channel and is associated with a second delay threshold that is less than the first delay threshold. In some aspects, the user equipment may send a buffer status report which includes information about the second logical channel. Numerous other aspects are provided.

Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine, for a first logical channel, that a first delay threshold for the first logical channel is satisfied. The user equipment may remap data from the first logical channel to a second logical channel, wherein the second logical channel is prioritized over the first logical channel and is associated with a second delay threshold that is less than the first delay threshold. In some aspects, the user equipment may send a buffer status report which includes information about the second logical channel. Numerous other aspects are provided.

A multi-tone communication system, a multi-tone signal demodulation device and a method thereof are provided. The multi-tone communication system includes a modulation device and a demodulation device. The modulation device can generate and broadcast a multi-tone audio signal corresponding to a control command. The demodulation device includes a sound receiving module, a data processor and a controller. The sound receiving module can receive the multi-tone audio signal. The data processor can process the multi-tone audio signal to obtain at least two tones carried on the multi-tone audio signal, and determine whether frequency drifts of the at least two tones are consistent, and if yes, the data processor decodes the at least two tones to generate an execution command. The controller executes the execution command.

A system, method, and apparatus for processing confidential information. In one embodiment, the method includes: receiving confidential information on an incoming line coupled to the call center server; intercepting a DTMF tone portion of the confidential information at an encoder located between the incoming line and an agent at the remote client; and processing the DTMF tone at approximately the same time for two separate data paths, wherein a first path contains encoded confidential information for a call server, and a second path contains no confidential information for the agent.

A system, method, and apparatus for processing confidential information. In one embodiment, the method includes: receiving confidential information on an incoming line coupled to the call center server; intercepting a DTMF tone portion of the confidential information at an encoder located between the incoming line and an agent at the remote client; and processing the DTMF tone at approximately the same time for two separate data paths, wherein a first path contains encoded confidential information for a call server, and a second path contains no confidential information for the agent.

There is disclosed a method for operating a wireless device in a wireless communication network, the method comprising modulating a plurality of input bits (N), wherein modulating comprises choosing a first number (k) of frequencies from a predetermined set of a total number (NF) of frequencies, the first number (k) being larger than 1, and performing quadrature amplitude modulation to a second number (NQ) on each of the first number (k) of frequencies. There are further disclosed related methods and devices.