Abstract: Distribution of management services in distributed antenna systems having a central unit and remote units configured to time-division multiplex (TDM) downlink and/or uplink management signals into time slots to form a TDM management frame signal. In this manner, collision will not occur between multiple management signals communicated over a common communications medium at the same time in the distributed antenna system. Collision detection and management mechanism can add design complexity, cost by requiring additional components, and require additional area on electronic boards. The TDM management frame signal may also be modulated at a carrier frequency before being combined with RF communications signals so that the combined signals are within a linear range of shared certain communications components to reduce cost and area.

Abstract: Distribution of management services in distributed antenna systems having a central unit and remote units configured to time-division multiplex (TDM) downlink and/or uplink management signals into time slots to form a TDM management frame signal. In this manner, collision will not occur between multiple management signals communicated over a common communications medium at the same time in the distributed antenna system. Collision detection and management mechanism can add design complexity, cost by requiring additional components, and require additional area on electronic boards. The TDM management frame signal may also be modulated at a carrier frequency before being combined with RF communications signals so that the combined signals are within a linear range of shared certain communications components to reduce cost and area.

Abstract: Systems and related accessing methods for remote unit assemblies for distributed communications systems are provided. A support member (e.g., a support plate) is arranged to be mounted in a drop ceiling grid, and a pivotally mounted pivot arm arranged above the support plate is configured to receive at least one electronic component. The pivot arm allows the electronic component to pivot downwardly from a ceiling structure for easier access. A slow release mechanism is configured to reduce a rate of pivotal motion of the pivot arm. A retention mechanism selectively retains the electronic component in a substantially horizontal position proximate to the support plate. A vented antenna cover below the support plate is pivotally mounted to the electronic component with at least one pivotal link, and may include an integrated antenna.

Abstract: Embodiments disclosed herein include combining power from isolated power paths for powering remote units in distributed antenna systems (DASs). In one example, a remote unit(s) is configured to include multiple input power ports for receiving power from multiple power paths. The received power from each input power port is combined to provide a combined output power for powering the remote unit. Thus, a remote unit can be powered by the combined output power. To avoid differences in received power on the multiple input power ports causing a power supply to supply higher power than designed or regulated, the input power ports in the remote unit are electrically isolated from each other. Further, the received power on the multiple power inputs ports can be controlled to be proportionally provided to the combined output power according to the maximum power supplying capabilities of the respective power supplies.

Abstract: Embodiments disclosed herein include combining power from isolated power paths for powering remote units in distributed antenna systems (DASs). In one example, a remote unit(s) is configured to include multiple input power ports for receiving power from multiple power paths. The received power from each input power port is combined to provide a combined output power for powering the remote unit. Thus, a remote unit can be powered by the combined output power. To avoid differences in received power on the multiple input power ports causing a power supply to supply higher power than designed or regulated, the input power ports in the remote unit are electrically isolated from each other. Further, the received power on the multiple power inputs ports can be controlled to be proportionally provided to the combined output power according to the maximum power supplying capabilities of the respective power supplies.

Abstract: Remote units are mounted in a support structure so that cooling air flow is not impeded by the support structure. The remote units may have RF communications circuitry and other components that generate heat in the provision of wireless services.

Abstract: Embodiments disclosed herein include combining power from isolated power paths for powering remote units in distributed antenna systems (DASs). In one example, a remote unit(s) is configured to include multiple input power ports for receiving power from multiple power paths. The received power from each input power port is combined to provide a combined output power for powering the remote unit. Thus, a remote unit can be powered by the combined output power. To avoid differences in received power on the multiple input power ports causing a power supply to supply higher power than designed or regulated, the input power ports in the remote unit are electrically isolated from each other. Further, the received power on the multiple power inputs ports can be controlled to be proportionally provided to the combined output power according to the maximum power supplying capabilities of the respective power supplies.

Abstract: Embodiments disclosed in the detailed description include analog distributed antenna system (DAS) supporting distribution of digital communications signals interfaced from a digital signal source and analog radio frequency (RF) communications signals. Analog RF communications signals received from analog RF signal sources are distributed in the analog DAS without being digitized. The analog DAS is also configured to interface with digital signal sources and compatibly distribute digital communications signals. Hence, a digital signal interface in head-end equipment (HEE) is configured to convert downlink digital communications signals to downlink analog RF communications signals for distribution to a plurality of remote units. The digital signal interface is also configured to convert uplink analog RF communications signals to uplink digital communications signals for distribution to the digital signal source(s).

Abstract: Embodiments disclosed herein include combining power from isolated power paths for powering remote units in distributed antenna systems (DASs). In one example, a remote unit(s) is configured to include multiple input power ports for receiving power from multiple power paths. The received power from each input power port is combined to provide a combined output power for powering the remote unit. Thus, a remote unit can be powered by the combined output power. To avoid differences in received power on the multiple input power ports causing a power supply to supply higher power than designed or regulated, the input power ports in the remote unit are electrically isolated from each other. Further, the received power on the multiple power inputs ports can be controlled to be proportionally provided to the combined output power according to the maximum power supplying capabilities of the respective power supplies.

Abstract: Power distribution modules in distributed antenna systems include fan monitoring circuits for indicating an alarm condition to head-end equipment. The alarm condition can be used by system operator/owners that a fan is drawing excessive power, thereby detracting from system performance, or indicating that the fan may fail. The alarm condition signal can be returned to the head-end equipment via an uplink communication path between a remote unit powered by the module and the head-end equipment.

Abstract: Remote units are mounted in a support structure so that cooling air flow is not impeded by the support structure. The remote units may have RF communications circuitry and other components that generate heat in the provision of wireless services.

Abstract: Connectivity between components in a system is monitored by applying a low voltage at one end of an RF cable, interpreted as a “0” logical state, and determining whether a similar voltage appears at the other end of the cable. If the cable is connected properly, the DC voltage applied at one end will appear at the other end and a proper indication is generated. If the expected voltage level does not appear at the other side, it means that RF connection was not correctly established and an alert is generated. Test systems for testing connectivity may include a first component comprising at least one port, at least one capacitor, and at least one resistor for providing high impedance. A controller provides a first logic state to the at least one port, scans multiple input ports of the system, and records a link corresponding to the applied first logic state.

Abstract: Distribution of management services in distributed antenna systems having a central unit and remote units configured to time-division multiplex (TDM) downlink and/or uplink management signals into time slots to form a TDM management frame signal. In this manner, collision will not occur between multiple management signals communicated over a common communications medium at the same time in the distributed antenna system. Collision detection and management mechanism can add design complexity, cost by requiring additional components, and require additional area on electronic boards. The TDM management frame signal may also be modulated at a carrier frequency before being combined with RF communications signals so that the combined signals are within a linear range of shared certain communications components to reduce cost and area.

Abstract: Remote units are mounted in a support structure so that cooling air flow is not impeded by the support structure. The remote units may have RF communications circuitry and other components that generate heat in the provision of wireless services.

Abstract: Connectivity between components in a system is monitored by applying a low voltage at one end of an RF cable, interpreted as a “0” logical state, and determining whether a similar voltage appears at the other end of the cable. If the cable is connected properly, the DC voltage applied at one end will appear at the other end and a proper indication is generated. If the expected voltage level does not appear at the other side, it means that RF connection was not correctly established and an alert is generated. Test systems for testing connectivity may include a first component comprising at least one port, at least one capacitor, and at least one resistor for providing high impedance. A controller provides a first logic state to the at least one port, scans multiple input ports of the system, and records a link corresponding to the applied first logic state.

Abstract: Distribution of management services in distributed antenna systems having a central unit and remote units configured to time-division multiplex (TDM) downlink and/or uplink management signals into time slots to form a TDM management frame signal. In this manner, collision will not occur between multiple management signals communicated over a common communications medium at the same time in the distributed antenna system. Collision detection and management mechanism can add design complexity, cost by requiring additional components, and require additional area on electronic boards. The TDM management frame signal may also be modulated at a carrier frequency before being combined with RF communications signals so that the combined signals are within a linear range of shared certain communications components to reduce cost and area.

Abstract: Methods and systems for supporting remote unit uplink tests in a distributed antenna system (DAS) are disclosed. In this regard, in one aspect, a centralized test signal generator is provided in the DAS to generate uplink test signals for one or more remote antenna units (RAUs) under test (RUTs). By providing the uplink test signals to the one or more RUTs from the centralized test signal generator, it is possible to perform uplink tests more efficiently with reduced equipment cost. The uplink test signals are distributed to the one or more RUTs over a downlink communications medium of the DAS. In another aspect, the one or more RUTs return the uplink test signals to a signal monitor over an uplink communications medium of the DAS, whereby uplink performance of the one or more RUTs can be examined to help optimize the DAS to improve quality of service (QoS).

Abstract: An electronic apparatus includes first and second electronic devices, and first and second heat sinks for dissipating heat, wherein there is each of electrical conductivity between the first electronic device and the first heat sink, thermal conductivity between the first electronic device and the first heat sink, electrical conductivity between the second electronic device and the second heat sink, and thermal conductivity between the second electronic device and the second heat sink, wherein electrical conductivity is provided between the first and second heat sinks, and wherein thermal resistance is provided between the first and second heat sinks, so that the second heat sink remains cooler than the first heat, such as for protecting the second electrical device from the heat generated by the first electronic device.

Abstract: Embodiments disclosed herein include combining power from isolated power paths for powering remote units in distributed antenna systems (DASs). In one example, a remote unit(s) is configured to include multiple input power ports for receiving power from multiple power paths. The received power from each input power port is combined to provide a combined output power for powering the remote unit. Thus, a remote unit can be powered by the combined output power. To avoid differences in received power on the multiple input power ports causing a power supply to supply higher power than designed or regulated, the input power ports in the remote unit are electrically isolated from each other. Further, the received power on the multiple power inputs ports can be controlled to be proportionally provided to the combined output power according to the maximum power supplying capabilities of the respective power supplies.

Abstract: A system, and related methods and devices, is disclosed for documenting a location of installed equipment. The system includes a mobile reader and a memory. The mobile reader is configured to read a unique identification of an equipment unit and to determine a location of the equipment unit while proximate the equipment unit. The location and the unique identification of the equipment unit is associated and stored in the memory. The memory may be located in the mobile reader or in a remotely located database. The mobile reader may be an optical reader configured to read the unique identification from an optical barcode associated with the equipment unit, or the mobile reader may be an RFID reader configured to read the unique identification from an RFID tag associated with the equipment unit.