Embodiments include methods for determining intermodulation distortion (IMD) present in an uplink channel received by a network node in a wireless communication network. Such embodiments include, for each of a plurality of time period pairs comprising first and second time periods: measuring a first parameter for an uplink channel received and a second parameter for each of a plurality of downlink channels transmitted by the network node; and for the uplink channel, determining a first difference between the first parameter measured during the first time period and the first parameter measured during the second time period. Such embodiments also include, based on the first difference and the second parameters, determining a predictive model for an IMD signal, associated with the downlink channels, that can be received by the network node in the uplink channel. For example, the predictive model can be used to adjust transmitter settings to improve IMD performance.

Antenna monitoring modules associated with antennas and test antennas communicating test signals, input blocking modules, and addressable mixed signal processors determining antenna performance. Distributed antenna systems including global transceivers, splitters or tappers, monitoring modules, antennas and test antennas, that monitor antenna presence and performance indications, and centrally report antenna status.. Distributed antenna systems including a trunk, multiple coupled branch runs with corresponding antenna monitoring modules, antennas and switches, capable of io selectively decoupling antennas. Distributed antenna systems with programmable attenuators for adjusting transmission levels for a trunk and its segments, branches, and corresponding antennas. Distributed antenna systems for over the air antenna transmission and reception testing using local or global signals. Distributed antenna systems with a system controller selectively depowering and repowering segments is thereof. Distributed antenna systems with switches coupled to an antenna monitoring module by multiple selectable routes. Distributed antenna systems with loop-based antenna configurations supplying power in multiple directions.

A communication device includes a service transmitter (Tx) configured to transmit a second beam of RF signals in a first radiation pattern to a user equipment (UE). The communication device further includes a control circuitry configured to: detect an amount and direction of echo signals at the donor receiver Rx corresponding to reflected RF signals in an environment surrounding a communication device; determine an installation location for the communication device based on echo signal measurements at one or more different locations; adjust polarization of the second beam of RF signals to minimize the echo signals at the donor receiver Rx based on the echo signal; and generate a second radiation pattern for at least the second beam of RF signals based on the amount and direction of the echo signals in the environment detected at the donor receiver Rx.

A multi-standard indoor mobile radio access network having a centralized device is provided. In one embodiment of the present invention, once an emergency (e.g., 911, etc.) call has been place by a wireless device, an application operating on the device transmits a notification signal to the centralized device (e.g., via a radio head, etc.). In response thereto, the centralized device transmits location information of the wireless device to an emergency responder via a wireless service provider, where the location information is transmitted separately from the emergency call itself.

Methods, systems, and devices for wireless communications are described for mitigation of blockages in wireless signals between wireless devices. A UE may detect that a blockage is present (e.g., a hand blockage), such as by detecting that a received signal strength from a transmitting device (e.g., a base station or access network entity) has dropped by greater than a threshold value. Based on the blockage detection, the UE may measure an amplitude of one or more reference signals at one or more antenna elements of multiple antenna elements. The UE may also measure one or more reference signals for one or more phase shifter values that are applied to the multiple antenna elements. The UE may determine a set of amplitude weightings, and a set of phase weightings, for the multiple antenna elements based on the measuring, and apply the sets of weightings for communications with the transmitting device.

Path-loss measurements are determined for a test client device moving along a path in a field test environment in which field Wi-Fi mesh network nodes are distributed. The path-loss measurements are reproduced in a field-to-lab test environment that includes a test client device disposed in an electromagnetically-isolated chamber and field test Wi-Fi mesh network nodes disposed in respective electromagnetically-isolated chambers. The test client device and the field test Wi-Fi mesh network nodes are in wired or wireless communication with each other via signal lines. A programmable attenuator is electrically coupled to each signal line. The attenuation of each programmable attenuator is varied to reproduce the path-loss measurements from the field test environment. Path-loss measurements at the location of each field Wi-Fi mesh network node are also reproduced with the programmable attenuators to reproduce the field Wi-Fi mesh network node configuration.

A method for evaluating a behaviour of a device comprises obtaining a first dataset representing a first set of values of at least two parameters relating to a first antenna pattern; and obtaining a second dataset representing a second set of values of the at least two parameters relating to a second antenna pattern being formed by the device. The method comprises relating the first dataset and the second dataset using a metric to obtain a relationship. Further, the method comprises evaluating at least a behaviour of the device using the relationship.

Aspects of the subject disclosure may include, for example, obtaining a reference signal, power information regarding the reference signal, and maximum power threshold for the communication device from a base station over a communication network. Further embodiments can include measuring a power of reference signal obtained from the base station resulting in a measure power, and determining a path loss between the base station and the communication device based on the measured power. Additional embodiments can include adjusting the antenna array to generate a coarse power adjustment for the communication device based on the path loss and the maximum power threshold, and providing a transmission signal to the base station according to the coarse power adjustment over the communication network. Other embodiments are disclosed.

Devices and methods for detection of active return loss for an antenna element of a plurality of antenna elements of a phased array antenna are provided. An exemplary device can convert a voltage differential at an input of a power amplifier (PA) to first current. The device can convert a coupled voltage corresponding to a signal transmitted from the PA to a respective antenna element, to a second current. The device can convert a reflected voltage corresponding to a signal reflected from the respective antenna element, to a third current. The device can convert the first current, the second current, and the third current to an output voltage at a generator output. The device can further have a controller that can adaptively generate codebooks for transmission based on the output voltage.

Systems and methods for monitoring passive components of a passive public safety distributed antenna system are provided, including a bi-directional amplifier, a public safety monitor coupled to and in communication with the bi-directional amplifier, and at least one smart node coupled to and in communication with the public safety monitor. The at least one smart node includes a processor configured to monitor signal characteristic information of at least one passive component of the system and transmit the signal characteristic information of the at least one passive component to the public safety monitor. The public safety monitor generates system performance information based on a signal at the bi-directional amplifier and the transmitted signal characteristic information of the at least one passive component from the at least one smart node.