Abstract: The described technology is generally directed towards scheduling, by a distributed unit, the injection of custom traffic (signals/data) into a radio unit communications path. The distributed unit coordinates with the radio unit to schedule and synchronize such custom traffic in unscheduled (physical resource block), such as interleaved with to live-air and non-live-air traffic. The radio unit can request the unscheduled physical resource blocks for custom traffic to be inserted by the radio unit. Alternatively, the distributed unit can inject the custom traffic in otherwise unscheduled physical resource blocks for sending to the radio unit. The custom traffic is configured to perform some action by the radio unit, such as to perform antenna calibration, to perform test and measurement operations to obtain performance data, and the like. Performance data can be used, for example, to modify operating parameters of the radio unit to improve performance of the radio unit.

Abstract: Parsing of C-plane messages is described, e.g., C-plane messages that are communicated from an open RAN distributed unit (O-DU) to an open RAN radio unit (O-RU) in order to determine whether a particular symbol that is to be subsequently communicated via U-plane messages is blank (e.g., no physical resource blocks (PRB)) or not blank (e.g., at least one PRB). A bitmap can be constructed by the O-RU having a bit length equal to the number of symbols to be communicated, where each bit of the bitmap corresponds to one of the symbols. Values of each bit of the bitmap can indicate whether a corresponding symbol is blank or not blank, and, if blank, some devices can be powered down to conserve power on a symbol-by-symbol basis in a manner that is compliant with Open RAN specifications and does not presume the same vendor for O-RU and O-DU.

Abstract: An error correction component and ?T?M function determine correction factors from a feedback signal to use by digital predistortion to cancel distortion caused by a power amplifier and also determine correction factors that may be used to determine Time of Arrival of an isolation leakage signal. Correction factors may be stored in, or retrieved from, multiple ?T?M functions, which may be part of an ASIC along with the error correction component. The isolation leakage signal may be canceled within the error correction component, resulting in a leakage residual signal that may facilitate determining the ToA of the leakage signal. Cancelling the isolation leakage signal facilitates better sensitivity in detecting the presence of, or ToA of, other signals present at the same port of a circulator from which the isolation leakage signal flows to the error correction component.

Abstract: The technology described herein is directed towards determining (e.g., a base station's) radio downlink power output based on traffic load data and temperature data. The downlink power output can be a compensation value that modifies the radio's power output by adapting to dynamic traffic load and temperature changes. Using traffic load and temperature results in more accurate power compensation. In one implementation, the current (most-recent) traffic load data and temperature data are used to obtain bounding values from a table indexed by traffic load data intervals and temperature data intervals. The bounding values are interpolated to find a power compensation value. By considering the downlink traffic, good correlation is maintained between the radio internal temperature reading and the actual radio ambient temperature, resulting in a more accurate power compensation value for any combination of downlink traffic load and internal temperature reading. This results in improved serving cell coverage.

Abstract: An error correction component and ?T?M compensation function determine correction factors from a feedback signal to use by digital predistortion to cancel distortion caused by a power amplifier and also determine correction factors that may be used to determine Time of Arrival of an isolation leakage signal. Correction factors may be stored in, or retrieved from, multiple ?T?M functions, which may be part of an ASIC along with the error correction component. The isolation leakage signal may be canceled within the error correction component, resulting in a leakage residual signal that may facilitate determining the ToA of the leakage signal. Cancelling the isolation leakage signal facilitates better sensitivity in detecting the presence of, or ToA of, other signals present at the same port of a circulator from which the isolation leakage signal flows to the error correction component.

Abstract: Technology described herein can gather and statistically analyze time domain power data for enabling real-time adjustment of one or more parameters of a radio system. In an embodiment, a system can comprise a processor and a read circuit communicatively coupled to the processor, wherein the processor controls the read circuit to read power data in a time domain from a radio system, and an analysis component communicatively coupled to the processor, wherein the analysis component compares the power data in the time domain to a power threshold, and wherein, based on a result of the power data being compared to the power threshold, the analysis component sorts the power data into bins at a storage component communicatively coupled to the processor.

Abstract: A system can comprise a radio unit comprising a digital front end chain. The system can further comprise a tap point disposed within the digital front end chain, wherein the tap point is configured to time align a signal at the tap point with a system time of the radio unit. The system can further comprise a first hardware component that is configured to selectively read the signal at the tap point to produce a read signal. The system can further comprise a second hardware component that is configured to store the read signal.

Abstract: Technology described herein can detect and statistically analyze frequency domain power data for enabling real-time adjustment of one or more parameters of a radio system. In an embodiment, a system can comprise a processor and a read circuit communicatively coupled to the processor, wherein the processor controls the read circuit to read power data in a frequency domain from a radio system, and an analysis component communicatively coupled to the processor and that compares the power data in the frequency domain to a power threshold, wherein, based on a result of the power data being compared to the power threshold, the analysis component sorts the power data into bins at a storage component communicatively coupled to the processor. In one or more embodiments, power data in the frequency domain is collected at a frequency of a subcarrier and/or at a frequency between subcarriers.

Abstract: A system can comprise a radio unit that comprises a transmitter and a receiver. The system can further comprise a first hardware component that communicatively couples the transmitter and the receiver. The system can further comprise a second hardware component that is configured to transmit an analog signal from the transmitter to the receiver via the first hardware component. The system can further comprise a third hardware component that is configured to evaluate operation of the radio unit based on the analog signal received at the receiver.

Abstract: The described technology is directed towards conveying, from a distributed unit to a radio unit, orthogonal frequency division multiplexing (OFDM) symbol-related data for each symbol of a slot for downlink transmissions by the radio unit. The symbol-related data includes information about each OFDM symbol's power, and the highest order of modulation used per symbol. The conveyed data can indicate a totally blank OFDM symbol. The per-slot symbol-related data can be conveyed in a control plane message to the radio unit, which, in an Open-Radio Access Network (O-RAN) network, can be formatted as a control plane section message type. Based on the slot information, a radio unit can configure the radio unit's power amplifiers, perform crest factor reduction, and/or digital pre-distortion tuning according to dynamic changes in the incoming downlink traffic, which can result in significant reduction in the power amplifiers' power consumption to boost the radio unit's overall energy efficiency.

Abstract: A system can comprise a radio unit. The system can further comprise a power detector that is configured to determine characteristics of incident signal data traffic of the radio unit. The system can further comprise an actuator that is configured to modify an operational parameter of the radio unit, wherein modifying the operational parameter of the radio unit alters performance of the radio unit. The system can further comprise a hardware component that is configured to cause the actuator to modify the operational parameter of the radio unit based on analyzing the incident signal data traffic.

Abstract: Technology described herein can gather and statistically analyze time domain power data for enabling real-time adjustment of one or more parameters of a radio system. In an embodiment, a system can comprise a processor and a read circuit communicatively coupled to the processor, wherein the processor controls the read circuit to read power data in a time domain from a radio system, and an analysis component communicatively coupled to the processor, wherein the analysis component compares the power data in the time domain to a power threshold, and wherein, based on a result of the power data being compared to the power threshold, the analysis component sorts the power data into bins at a storage component communicatively coupled to the processor.

Abstract: A system can comprise a radio unit comprising a digital front end, wherein the digital front end comprises a group of tap points that are configured to receive a first custom signal. The system can also comprise a first component that is configured to originate the first custom signal. The system can also comprise a second component that is configured to select a first tap point of the group of tap points, and inject the first custom signal into the first tap point.

Abstract: A system can comprise a memory that is configured to store and retrieve a first signal. The system can comprise a generator that is configured to generate first in-phase, quadrature sub-carrier values. The system can comprise a look up table that stores predetermined second in-phase, quadrature sub-carrier values. The system can comprise a pseudo-random look up table generator that is configured to operate on the predetermined second in-phase, quadrature sub-carrier values to produce pseudo-random data values. The system can comprise a component that is configured to inject a second signal into a radio unit, wherein the second signal is selected from the memory, the generator, the look up table, and the pseudo-random look up table generator, and wherein the second signal is configurably switched between a time domain path of a digital front end of the system, and a frequency domain path of the digital front end.

Abstract: A system can comprise a radio unit comprising a transmitter, a receiver, and a power amplifier. The system can further comprise a hardware loopback that communicatively couples the transmitter and the receiver via an analog section of the radio unit, wherein the hardware loopback is selected at a component disposed between the transmitter and the power amplifier. The system can further comprise a hardware component that is configured to transmit a signal from the transmitter to the receiver via the hardware loopback.

Abstract: A system can comprise a radio unit comprising a digital front end, wherein the digital front end comprises a group of tap points that are configured to receive a first custom signal. The system can also comprise a first component that is configured to originate the first custom signal. The system can also comprise a second component that is configured to select a first tap point of the group of tap points, and inject the first custom signal into the first tap point.

Abstract: Technology described herein can gather frequency domain power data for enabling real-time adjustment of one or more parameters of a radio system. In an embodiment, a system can comprise a processor that is configured to control collection of power data relative to a subcarrier of a radio system, a read circuit communicatively coupled to the processor and controlled by the processor to read, at the radio system, the power data in a frequency domain, relative to the subcarrier, along a selected time range that is defined by an upper limit of time and a lower limit of time, and a memory communicatively coupled to the processor and that receives and stores the power data in the frequency domain from the read circuit. In one or more embodiments, power data in the frequency domain is collected at a frequency of a subcarrier and/or at a frequency between subcarriers.

Abstract: Technology described herein can gather and statistically analyze time domain power data for enabling real-time adjustment of one or more parameters of a radio system. In an embodiment, a system can comprise a processor and a read circuit communicatively coupled to the processor, wherein the processor controls the read circuit to read power data in a time domain from a radio system, and an analysis component communicatively coupled to the processor, wherein the analysis component compares the power data in the time domain to a power threshold, and wherein, based on a result of the power data being compared to the power threshold, the analysis component sorts the power data into bins at a storage component communicatively coupled to the processor.

Abstract: Technology described herein can gather and statistically analyze time domain power data for enabling real-time adjustment of one or more parameters of a radio system. In an embodiment, a system can comprise a processor and a read circuit communicatively coupled to the processor, wherein the processor controls the read circuit to read power data in a time domain from a radio system, and an analysis component communicatively coupled to the processor, wherein the analysis component compares the power data in the time domain to a power threshold, and wherein, based on a result of the power data being compared to the power threshold, the analysis component sorts the power data into bins at a storage component communicatively coupled to the processor.

Abstract: A system can comprise a radio unit that comprises a transmitter and a receiver. The system can further comprise a first hardware component that communicatively couples the transmitter and the receiver. The system can further comprise a second hardware component that is configured to transmit an analog signal from the transmitter to the receiver via the first hardware component. The system can further comprise a third hardware component that is configured to evaluate operation of the radio unit based on the analog signal received at the receiver.