This disclosure provides methods, devices, and systems for minimizing ranging errors resulting from clock drift and/or frequency offsets between wireless communication devices such as a responder device and an initiator device. In various implementations, the responder device receives a request for a ranging operation from the initiator device. The responder device determines whether its temperature exceeds a threshold. When the responder device's temperature exceeds the threshold, the responder device determines a time period after which the responder device's temperature is expected to decrease below the threshold. The responder device transmits a response frame indicating the responder device's temperature and the determined time period. In some instances, the determination that the responder device's temperature exceeds the threshold indicates that ranging errors resulting from clock drift and/or frequency offsets between the responder device and the initiator device are greater than an amount.

Message faults are likely to be common in the noisy, high-density wireless environments planned for 5G and 6G. Disclosed is a method for a receiver to recover the correct message from one or more corrupted message copies, by (a) measuring the modulation quality of each message element, and (b) determining which message elements of two corrupted copies are “inconsistent”, that is, the corresponding message elements are different. The modulation quality can be determined according to how close the message element's modulation is to the predetermined modulation levels of the modulation scheme. The receiver can assemble a merged message by selecting whichever message elements of the two copies have the best modulation quality, and determine whether the merged message is still corrupted. If so, the receiver can sequentially replace the inconsistent message elements with those of the other copy, singly or in a comprehensive nested search, testing each version until successful.

Message faults are likely to be common in the noisy, high-density wireless environments planned for 5G and 6G. Disclosed is a method for a receiver to recover the correct message from one or more corrupted message copies, by (a) measuring the modulation quality of each message element, and (b) determining which message elements of two corrupted copies are “inconsistent”, that is, the corresponding message elements are different. The modulation quality can be determined according to how close the message element's modulation is to the predetermined modulation levels of the modulation scheme. The receiver can assemble a merged message by selecting whichever message elements of the two copies have the best modulation quality, and determine whether the merged message is still corrupted. If so, the receiver can sequentially replace the inconsistent message elements with those of the other copy, singly or in a comprehensive nested search, testing each version until successful.

Technologies directed to a wireless device with RF port impedance detection using concurrent radios are described. One wireless device includes an impedance detection circuit with a bi-directional RF coupler and switching circuitry. A processing device at least two radios, at least two RF ports, and an impedance detection circuit. The impedance detection circuit is configured to measure a first receive signal strength indicator (RSSI) value of a first reflected signal. The first reflected signal corresponding to a first signal sent by one of the at least two radios. The impedance detection circuit determines that the first RSSI value exceeds a threshold. The threshold represents an impedance mismatch condition at or beyond at least one of the two RF ports. The processing device sends a first indicative of the impedance mismatch condition to a second device.

A method (200) is disclosed for testing of wireless power transfer equipment (20) that has a plurality of wireless power transmitters (22a-n) adapted for concurrent wireless power transfer to respective wireless power receiver devices (10a, 10a′, 10d). The method comprises providing (210) a number of slave test devices (30a-n), and providing (220) a master test device (40) in communicative connection with the slave test devices (30a-n). The method further comprises arranging (230) each slave test device (30a-n) in a position suitable for receiving power from a respective one of the wireless power transmitters (22a-n) of the wireless power transfer equipment (20) under test, and commanding (240; 110a-n), by the master test device (40), the slave test devices (30a-n) to perform respective test procedures (120a-n) upon the respective wireless power transmitters (22a-n) while being in concurrent operation. Finally, the method comprises receiving (250; 140a-n), by the master test device (40), result data (125a-n) from the respective test procedures (120a-n) performed by the slave test devices (30a-n), and providing (260; 170) an output (45) by the master test device (40), the output (45) being based on the respective result data (125a-n) obtained from the slave test devices (30a-n).

A method (200) is disclosed for testing of wireless power transfer equipment (20) that has a plurality of wireless power transmitters (22a-n) adapted for concurrent wireless power transfer to respective wireless power receiver devices (10a, 10a′, 10d). The method comprises providing (210) a number of slave test devices (30a-n), and providing (220) a master test device (40) in communicative connection with the slave test devices (30a-n). The method further comprises arranging (230) each slave test device (30a-n) in a position suitable for receiving power from a respective one of the wireless power transmitters (22a-n) of the wireless power transfer equipment (20) under test, and commanding (240; 110a-n), by the master test device (40), the slave test devices (30a-n) to perform respective test procedures (120a-n) upon the respective wireless power transmitters (22a-n) while being in concurrent operation. Finally, the method comprises receiving (250; 140a-n), by the master test device (40), result data (125a-n) from the respective test procedures (120a-n) performed by the slave test devices (30a-n), and providing (260; 170) an output (45) by the master test device (40), the output (45) being based on the respective result data (125a-n) obtained from the slave test devices (30a-n).

A passive intermodulation (PIM) fault point detection method includes sending, by an antenna feeder system of a network device, a plurality of downlink signals of different corresponding frequencies, and receiving a first signal, wherein the first signal is an uplink PIM signal generated by excitation by at least two downlink signals of the plurality of downlink signals. The PIM method further includes determining, by the network device, second signals corresponding to a plurality of detection points, wherein a second signal of the second signals corresponds to a detection point of the plurality of detection points, and is a pre-estimated signal for a PIM signal of the detection point. The PIM method further includes determining, by the network device, a PIM fault point from the plurality of detection points based on the first signal and the second signals corresponding to the plurality of detection points.

A passive intermodulation (PIM) fault point detection method includes sending, by an antenna feeder system of a network device, a plurality of downlink signals of different corresponding frequencies, and receiving a first signal, wherein the first signal is an uplink PIM signal generated by excitation by at least two downlink signals of the plurality of downlink signals. The PIM method further includes determining, by the network device, second signals corresponding to a plurality of detection points, wherein a second signal of the second signals corresponds to a detection point of the plurality of detection points, and is a pre-estimated signal for a PIM signal of the detection point. The PIM method further includes determining, by the network device, a PIM fault point from the plurality of detection points based on the first signal and the second signals corresponding to the plurality of detection points.

An antenna monitoring unit for monitoring an RF transmission line and RF signal path to an antenna unit used in a distributed antenna system in a structure. The antenna is DC isolated from the RF transmission line through a current injector, allowing testing by sending a code from a base station to a remote antenna location and using a monitoring module to confirm reception of the code and transmit data to the base station relating to the antenna unit.

An antenna monitoring unit for monitoring an RF transmission line and RF signal path to an antenna unit used in a distributed antenna system in a structure. The antenna is DC isolated from the RF transmission line through a current injector, allowing testing by sending a code from a base station to a remote antenna location and using a monitoring module to confirm reception of the code and transmit data to the base station relating to the antenna unit.