UWB ranging methods and apparatus are disclosed. The method comprises a ranging communication with a plurality of responder devices, the ranging communication comprising: transmitting, by an initiator device, a polling signal in a time slot; receiving a respective response from each of the plurality of responder devices, overlapping and in a next time slot, each response comprising: synchronization bits, and a frame comprising Start of Frame Delimiter, and a Scrambled Timestamp Sequence; wherein the STS comprises a sequence of segments each preceded by a respective guard interval, wherein a specific one of the segments comprises data derived from a ranging key and a responder-identifier each unique to the respective responder among the plurality of responders, wherein a sequence-number of the specific segment is unique to the respective response, and wherein a remainder of the segments each comprise the same data derived from a predetermined common key and predetermined common data.

UWB ranging methods and apparatus are disclosed. The method comprises a ranging communication with a plurality of responder devices, the ranging communication comprising: transmitting, by an initiator device, a polling signal in a time slot; receiving a respective response from each of the plurality of responder devices, overlapping and in a next time slot, each response comprising: synchronization bits, and a frame comprising Start of Frame Delimiter, and a Scrambled Timestamp Sequence; wherein the STS comprises a sequence of segments each preceded by a respective guard interval, wherein a specific one of the segments comprises data derived from a ranging key and a responder-identifier each unique to the respective responder among the plurality of responders, wherein a sequence-number of the specific segment is unique to the respective response, and wherein a remainder of the segments each comprise the same data derived from a predetermined common key and predetermined common data.

Methods and apparatus for providing quasi-licensed spectrum access within a prescribed area or venue, including to users or subscribers of one or more Mobile Network Operators (MNOs). In one embodiment, the quasi-licensed spectrum utilizes 3.5 GHz CBRS (Citizens Broadband Radio Service) spectrum allocated by a Federal or commercial SAS (Spectrum Access System) to a managed content delivery network that includes one or more wireless access nodes (e.g., CBSDs) in data communication with a controller, and the core(s) of the MNO network(s). In one variant, the controller dynamically allocates (i) spectrum within the area or venue within CBRS bands, and (ii) MNO “roaming” users or subscribers to CBRS bands (e.g., via extant LTE-TD technology). In one particular implementation, the managed network comprises a Multiple Systems Operator (MSO) network such as a cable or satellite network, and the MSO and MNO coordinate to implement user-specific and/or data-specific policies for the roaming MNO subscribers.

Methods and apparatus for providing quasi-licensed spectrum access within a prescribed area or venue, including to users or subscribers of one or more Mobile Network Operators (MNOs). In one embodiment, the quasi-licensed spectrum utilizes 3.5 GHz CBRS (Citizens Broadband Radio Service) spectrum allocated by a Federal or commercial SAS (Spectrum Access System) to a managed content delivery network that includes one or more wireless access nodes (e.g., CBSDs) in data communication with a controller, and the core(s) of the MNO network(s). In one variant, the controller dynamically allocates (i) spectrum within the area or venue within CBRS bands, and (ii) MNO “roaming” users or subscribers to CBRS bands (e.g., via extant LTE-TD technology). In one particular implementation, the managed network comprises a Multiple Systems Operator (MSO) network such as a cable or satellite network, and the MSO and MNO coordinate to implement user-specific and/or data-specific policies for the roaming MNO subscribers.

A method of recovering information encoded by a modulated sinusoidal waveform having first, second, third and fourth data notches at respective phase angles, where a power of the modulated sinusoidal waveform is reduced relative to a power of an unmodulated sinusoidal waveform within selected ones of the first, second, third and fourth data notches so as to encode input digital data. The method includes receiving the modulated sinusoidal waveform and generating digital values representing the modulated sinusoidal waveform. A digital representation of the unmodulated sinusoidal waveform is subtracted from the digital values in order to generate a received digital data sequence, which includes digital data notch values representative of the amplitude of the modulated sinusoidal waveform within the first, second, third and fourth data notches. The input digital data is then estimated based upon the digital data notch values.

A method of recovering information encoded by a modulated sinusoidal waveform having first, second, third and fourth data notches at respective phase angles, where a power of the modulated sinusoidal waveform is reduced relative to a power of an unmodulated sinusoidal waveform within selected ones of the first, second, third and fourth data notches so as to encode input digital data. The method includes receiving the modulated sinusoidal waveform and generating digital values representing the modulated sinusoidal waveform. A digital representation of the unmodulated sinusoidal waveform is subtracted from the digital values in order to generate a received digital data sequence, which includes digital data notch values representative of the amplitude of the modulated sinusoidal waveform within the first, second, third and fourth data notches. The input digital data is then estimated based upon the digital data notch values.

The present disclosure discloses a method and a device for extracting broadband error calibration parameters, and a computer-readable storage medium. The method includes: performing frequency band splitting on link broadband signals of an ultra-wide band system according to a received frequency band index table to generate sub-bands; extracting an amplitude error and a phase error of each sub-band; and iteratively weighting and accumulating, according to the frequency band index table and a preset broadband weight table, the amplitude error and the phase error of each sub-band one by one to an initial amplitude error compensation parameter and an initial phase error compensation parameter respectively, to synthesize and extract broadband error calibration parameters.

The present disclosure discloses a method and a device for extracting broadband error calibration parameters, and a computer-readable storage medium. The method includes: performing frequency band splitting on link broadband signals of an ultra-wide band system according to a received frequency band index table to generate sub-bands; extracting an amplitude error and a phase error of each sub-band; and iteratively weighting and accumulating, according to the frequency band index table and a preset broadband weight table, the amplitude error and the phase error of each sub-band one by one to an initial amplitude error compensation parameter and an initial phase error compensation parameter respectively, to synthesize and extract broadband error calibration parameters.

Methods, systems, and apparatuses are presented to transmit fragmented communication frames, such as fragmented ultra-wideband (UWB) frames. In some implementations, a communication frame may be divided into a plurality of fragments, and the fragments may be transmitted across a plurality of regulatory test intervals. E.g., each fragment may be transmitted within a mutually-exclusive regulatory test interval. In some implementations, each fragment may be constrained in time and/or transmission power, such that the total energy emitted during transmission of the fragment remains within a maximum energy limit defined for the regulatory test interval, e.g., by a regulatory entity. In some implementations, the sum of the energy emitted during transmission of two or more fragments may exceed the maximum energy limit defined for the regulatory test interval.

Systems and methods for operating a communication device. The methods comprise: receiving a carrier signal modulated with a modulation signal comprising a symbol conveyed in a symbol timing window; determining an energy value for each timeslot in the symbol timing window; combining the energy values to determine a combined energy value for each bit of the symbol in a manner in which the combined energy value is penalized if more than one timeslot of the symbol timing window comprises energy contained in the carrier signal; and generating a soft value for each bit of the sequence of bits by combining the combined energy value with a weight value, where the weight value is selected from a plurality of weight values based on a number of timeslots in the symbol timing window which comprises energy contained in the carrier signal.