Abstract: Techniques are provided for diminishing latency in a DAS fronthaul network configured to convey time-domain transport data, e.g., time-domain digital transport data or time-domain digital data. Other techniques are provided for obtaining higher DAS fronthaul efficiency.

Abstract: One embodiment is directed to a virtual distributed antenna system (vDAS) that comprises at least one physical server computer configured to execute virtualization software that creates a virtualized environment. The at least one physical server computer is configured to instantiate and execute a set of one or more virtual network functions (VNFs) used to implement a virtual master unit (vMU). The vDAS further comprises a plurality of access points (APs), each of the APs associated with a respective set of coverage antennas. Other embodiments are disclosed.

Abstract: A PoE powered device and method of operation are provided. The device includes a first port unit configured to negotiate receipt of a level of PoE power from a power sourcing equipment. The power is received on a first pair of taps on a first communication port. A detection unit is configured to detect a presence of a first optional circuit load and to detect a presence of a second optional power load. A control circuit is configured to establish connectivity between a second pair of taps on the first communication port and a second powered device port unit in response to the detection unit detecting the first optional load, and further configured to establish connectivity between the second pair of taps and a third pair of taps on a pass-through communication port in response to the detection unit failing to detect the first load and detecting the second load.

Abstract: One embodiment is directed to an open radio access network (O-RAN) distributed antenna system (DAS) that comprises a central access node (CAN) configured to communicatively couple at least one O-RAN distributed unit (O-DU) to the O-RAN DAS, where the O-DU is configured to communicate with a single O-RAN remote unit (O-RU) entity. The O-RAN DAS also includes a plurality of O-RAN remote units (O-RUs) communicatively coupled to the CAN over a fronthaul network, where the O-DU, CAN, and O-RUs are configured to natively use an O-RAN fronthaul interface to communicate fronthaul data over the fronthaul network. The CAN is configured to appear to the O-DU as the single O-RU entity for a cell served by the O-DU even though the CAN is configured to serve the cell using multiple O-RUs that form a simulcast group for that cell. One or more CANs can be used. Other embodiments are disclosed.

Abstract: An interface is provided for processing digital signals in a standardized format in a distributed antenna system. One example includes a unit disposed in a distributed antenna system. The unit includes an interface section and an output section. The interface section is configured for outputting a first complex digital signal and a second complex digital signal. The first complex digital signal is generated from a digital signal in a standardized format received from a digital base station. The output section is configured for combining the first complex digital signal and the second complex digital signal into a combined digital signal. The output section is also configured for outputting the combined digital signal. The combined digital signal comprises information to be wirelessly transmitted to a wireless user device.

Abstract: Certain aspects involve a wideband remote unit. The wideband remote unit can include one or more antennas and an analog-to-digital converter (“ADC”). The antenna can receive wideband signals. The wideband signals can include an uplink RF signal and a leaked downlink RF signal. The uplink RF signal can have an uplink signal power at or near a noise level. The leaked downlink RF signal can have a downlink signal power greater than the uplink signal power. The ADC can convert the received wideband signals to digital RF signals representing the uplink signal and the downlink signal. The wideband remote unit can transmit the digital RF signals to a unit of a DAS that is in communication with a base station.

Abstract: Certain features relate to configuring a distributed antenna system (“DAS”) to interface with and manage components of facility control and monitoring systems while providing wireless communications in a cellular or public safety network. A communications module is configured for receiving facility control signals from facility control and monitoring centers and associated nodes and sensors. A signal processing module is configured to convert the facility control signals a format transportable in the DAS. The signal processing module is also configured to multiplex the facility control signals with mobile voice and data signals being transported in the DAS. The DAS configured to manage components of facility control and monitoring systems can route facility control signals to appropriate facility control centers or the nodes and sensors associated with the facility control centers.

Abstract: A method includes: receiving downlink signals at a head end unit of a distributed antenna system from at least one base station; processing the downlink signals into downlink channelized digital baseband signals at the head end unit by at least one of channel filtering, interpolating, and mixing with an oscillator, the downlink channelized digital baseband signals including call information for wireless communication; formatting the downlink channelized digital baseband signals for transport together at the head end unit; packetizing and packet scheduling the downlink channelized digital baseband signals into downlink packetized baseband signals at the head end unit; and transmitting the downlink packetized baseband signals from the head end unit to remotely located units of the distributed antenna system.

Abstract: An endpoint element of a distributed antenna system includes processing circuitry configured for processing a plurality of digital signals for conditioning the signals and compression circuitry configured for compressing at least one of the digital signals according to a compression scheme to yield at least one compressed digital signal and compression settings. The digital signals are combined into a single digital stream and combined and time division multiplexed onto a serial data link with the compression settings. The digital signals are also transmitted with compression settings to another endpoint element over the serial data link.

Abstract: A system comprising circuitry configured to: communicate with a base station; and adjust an uplink gain applied to uplink signals communicated from the system to the base station based on an evaluation of (1) a noise contribution from the system that is presented to the base station and (2) a receive noise floor for the base station.

Abstract: Certain features relate to improving the link-fault tolerance in a distributed antenna system (DAS) by utilizing a series of synchronous communication frames. A receiving remote unit or a head-end unit in the DAS can predict the start of incoming communication frames based on frame information extracted from previously received communication frames. For example, a remote unit can be configured to receive one or more communication frames, each of the one or more communication frames including a start-of-frame field. After a period of time corresponding to the frame repetition rate, the remote unit can search for an additional start-of-frame field, indicating the receipt of the next communication frame. The remote unit can extract the payload data from the next communication frame based on the predicted value for the additional start-of-frame field.

Abstract: The present disclosure describes devices, systems, and methods for frame start optimizing in telecommunication systems. Some aspects may involve receiving, by an aggregation device in the telecommunication system, frames from transmitter devices. Some aspects may also involve determining that buffering may be required to sequence the frames for an aggregation operation performed by the aggregation device. The aggregation operation may include a process that combines frames from transmitter devices. In response to determining that the buffering is required, frame adjustment signals may be transmitted to the transmitter devices. The frame adjustment signals may instruct the transmitter devices to transmit subsequent frames such that the buffering is reduced for a subsequent aggregation operation performed by the aggregation device using the subsequent frames.

Abstract: A distributed antenna system including a plurality of remote antenna units, a passive element coupled to at least one of the remote antenna units and an RFID system located proximate the passive element. The RFID system includes processing circuitry and measurement circuitry and the processing circuitry is configured for receiving an interrogation signal and processing the interrogation signal and providing a response. The response includes data associated with a measurement made by the measurement circuitry.

Abstract: A system includes: a unit configured to communicate a modulated signal via a signal interface; and at least one additional unit configured to receive the modulated signal from the unit. The at least one additional unit includes circuitry configured to remove jitter from a recovered clock signal to generate a jitter reduced clock signal that tracks long-term drift in the modulated signal, wherein the at least one additional unit is configured to generate the recovered clock signal from the modulated signal.

Abstract: Certain aspects involve power management subsystems for a distributed antenna system (“DAS”) or other telecommunication system. The power management subsystem can include a measurement module and an optimization module. The measurement module can monitor a utilization metric for a remote unit in the DAS or other telecommunication system. The power optimization module can determine whether the remote unit is underutilized based on the monitored utilization metric. The power optimization module can configure the remote unit for a low-power operation in response to determining that the remote unit is underutilized.

Abstract: A communication device for use within a communication system, the device comprising: re-sampling circuitry configured to output re-sampled digital downlink signals by re-sampling digital downlink signals at resample rates based on at least one factor, the re-sampled digital downlink signals having a smaller bandwidth than the digital downlink signals; and framing circuitry configured to multiplex the re-sampled digital downlink signals and to generate a first frame that includes the re-sampled digital downlink signals as framed data for transport to one or more remotely located communication devices of the communication system, wherein the one or more remotely located communication devices of the communication system are configured to transmit radio frequency signals using at least one antenna, wherein the transmitted radio frequency signals are derived from the framed data of the first frame received from the communication device.

Abstract: A communication device for use within a communication system, the device comprising: re-sampling circuitry configured to output re-sampled digital downlink signals by re-sampling digital downlink signals at resample rates based on at least one factor, the re-sampled digital downlink signals having a smaller bandwidth than the digital downlink signals; and framing circuitry configured to multiplex the re-sampled digital downlink signals and to generate a first frame that includes the re-sampled digital downlink signals as framed data for transport to one or more remotely located communication devices of the communication system, wherein the one or more remotely located communication devices of the communication system are configured to transmit radio frequency signals using at least one antenna, wherein the transmitted radio frequency signals are derived from the framed data of the first frame received from the communication device.

Abstract: A unit includes circuitry configured to: receive a downlink signal; sub-divide the downlink signal into a sub-divided downlink signal having downlink signal components in a time domain, each downlink signal component corresponding to a respective sub-band; determine that at least one downlink signal component corresponds to at least one sub-band having data to be transmitted via a distributed antenna system; generate a transformed downlink signal representing the downlink signal in a frequency domain by performing a frequency transform on the downlink signal; determine that the at least one sub-band of the transformed downlink signal includes the data to be transmitted; extract the at least one sub-band from the transformed downlink signal at least in part by providing data for at least one portion of the transformed downlink signal in the frequency domain that corresponds to the at least one sub-band to the at least one remote antenna unit.

Abstract: Certain aspects involve selectively combining uplink transmissions in a distributed antenna system (“DAS”). For example, a unit of the DAS can receive baseband uplink transmissions from remote units of the DAS via a first channel and a second channel. The unit can generate a first combined uplink signal by combining baseband uplink transmissions received from a first subset of the remote units via the first channel that include data for transmission to a base station. The unit can generate a second combined uplink signal that includes baseband uplink transmissions received from a second subset of the remote units via the second channel and excludes or attenuates baseband uplink transmissions that are received from the first subset of the remote units via the second channel and that lack data for transmission to the base station are excluded or attenuated. The unit can transmit the combined uplink signals to the base station.

Abstract: Systems and methods for optimized telecommunications distribution are provided. For example, a distributed antenna system can include a master unit for transceiving signals with remote units operable for wirelessly transceiving signals with mobile devices in a coverage area. A self-optimized network analyzer can be in a unit of the distributed antenna system. A self-optimized network controller in the distributed antenna system can output commands for changing operation of a component in the distributed antenna system in response to analysis results from the self-optimized network analyzer. In some aspects, the master unit includes base transceiver station cards for receiving call information in network protocol data from a network and for generating digital signals including the call information from the network protocol data for distribution to the remote units.