Abstract: A heat sink system to conduct heat away from a printed circuit board assembly is provided. The heat sink system includes a chassis, a chassis cover, at least one thermally conductive block underlaying a high-heat section of the printed circuit board assembly, a plurality of thermally conductive through-rods, and at least one thermally conductive notch-rod associated with a respective thermally conductive block. The at least one thermally conductive block is in thermal contact with a portion of the chassis. The plurality of thermally conductive through-rods and at least one thermally conductive notch-rod each have a first end and a second end. The through-rods are positioned in holes formed in the printed circuit board. The notch-rods are positioned in a notch formed in the printed circuit board assembly. The first ends thermally contact the thermally conductive block and the second ends thermally contact the chassis cover.

Abstract: A remote antenna unit includes an uplink integrated circuit (IC) and a downlink IC. The uplink IC includes an uplink synthesizer that provides an uplink oscillating signal; an uplink mixer stage that mixes an uplink radio frequency signal with the uplink oscillating signal to produce an uplink intermediate frequency signal; and an uplink control interface that receives uplink commands that control the frequency of the uplink oscillating signal. The downlink IC includes a downlink synthesizer that provides a downlink oscillating signal; a downlink mixer stage that mixes the downlink intermediate frequency signal with a downlink oscillating signal to produce a down link radio frequency signal; a downlink control interface that receives downlink commands that control the frequency of the downlink oscillating signal. The antenna unit also includes a clock that provides a reference frequency to the uplink and downlink synthesizers.

Abstract: Embodiments of the present invention provide improved systems and methods for adjusting system tests based on detected interference. In one embodiment, a system comprises a host unit; a system test controller to control the performance of system tests, wherein a system test to detect the reception of an interfering signal comprises disabling the generation of tones for transmission through the communication system. The system also comprises multiple remote antenna units communicatively coupled to the system test controller to transmit signals to multiple wireless terminals, wherein a remote antenna unit comprises: an antenna; a transceiver, coupled to the antenna; a signal detector that measures reverse and forward power of signals transmitted to and received from the antenna; and a microcontroller to control the antenna unit, wherein upon receiving a command to perform interference testing, the microcontroller adjusts a subsequent test based on measurements of the reverse power by the signal detector.

Abstract: One embodiment is directed to a distributed antenna system (DAS) including a host unit and a plurality of remote units. The host unit includes a plurality of base transceiver stations and a switch. Each of the base transceiver stations is configured to provide a downstream baseband digital signal to the switch and to receive an upstream baseband digital signal from the switch, wherein each downstream baseband digital signal and upstream baseband digital signal is a digital representation of the RF channel at baseband of the respective base transceiver station. The switch is configured to route each of the downstream baseband digital signals to a respective subset of the remote units as one or more downstream serial data streams and to route each of the upstream baseband digital signals from one or more upstream serial data streams to a respective subset of the base transceiver stations.

Abstract: One embodiment is directed to a distributed antenna system comprising a host unit and at least one remote antenna unit that is communicatively coupled to the host unit. The remote antenna unit is configured to perform self-interference suppression processing in an upstream signal path using, as an input thereto, a feedback signal derived from the downstream radio frequency signal radiated from the antenna. Other embodiments are disclosed.

Abstract: One embodiment is directed to an antenna module comprising integrated RF circuitry comprising at least one of a transmitter and a receiver. The module further comprises an antenna element operatively coupled to the integrated RF circuitry, the antenna element comprising first and second substantially co-planar portions. The integrated RF circuitry is disposed on an interior part of at least one of the first and second substantially co-planar portions. Other embodiments are disclosed.

Abstract: One embodiment of a system comprises a community WLAN comprising fixed equipment that includes a centralized base transceiver station (CBTS) coupled to a public network and a plurality of remote transceiver stations (RTSs) each coupled to a number of a plurality of UEs, and, via a radio link, to the CBTS. Respective cellular radio frequency signals transmitted by the CBTS to the RTSs and by each RTS to the CBTS are frequency converted from respective first frequencies within conventional cellular frequency bands to respective second frequencies above the conventional cellular frequency bands. The respective frequency-converted cellular radio frequency signals received by the CBTS from the RTSs and by each RTS from the CBTS are frequency converted from respective second frequencies above the conventional cellular frequency bands to respective first frequencies within the conventional cellular frequency bands.

Abstract: One embodiment is directed to a distributed antenna system that comprises a hub to receive a plurality of downlink transceiver signals output from a plurality of transceiver units and to send a plurality of uplink transceiver signals to the plurality of transceiver units. The plurality of downlink transceiver signals has overlapping frequencies and contains different communication content. The distributed antenna system further comprises a plurality of distributed antenna units, each located at a respective a remote location. The hub is configured to route a respective downlink transport signal to each of a plurality of distributed antennas, wherein each of the downlink transport signals is derived from one of the plurality of downlink transceiver signals received at the hub. Each of the distributed antenna units is configured to transmit a respective downlink radio frequency signal derived from the downlink transport signal that is routed to that distributed antenna unit.

Abstract: A distributed antenna system comprises a base transceiver station, a plurality of distributed antenna units and a signal routing apparatus. The base transceiver station has a plurality of output ports that generate a plurality of downlink signals having overlapping transmit frequencies and containing different communication content. The different communication content is directed toward each of a plurality of mobile units. The base transceiver station also has at least one uplink receive port that receives an uplink signal. The uplink signal includes communication content received from at least one of the mobile units. The plurality of distributed antenna units have coverage areas that are non-overlapping or only partially overlapping.

Abstract: A hub unit is configured to receive wireless analog downlink radio frequency signals from a plurality of base stations from more than one wireless service provider. The hub unit is configured to digitize each analog downlink radio frequency signal in order to generate respective downlink digital data. The hub unit comprises a reconfigurable interconnect to selectively provide, to each of the plurality of radio access nodes using a shared transport medium, the downlink digital data associated with a respective two or more of the analog downlink radio frequency signals. Each of the plurality of radio access nodes is configured to reconstruct, from the downlink digital data provided to that radio access node, an analog radio frequency version of each of the associated two or more analog downlink radio frequency signals and radiate each reconstructed analog radio frequency version in a respective coverage area associated with that radio access node.

Abstract: A communication system comprises a first unit; and a second unit communicatively coupled to the first unit. The first unit is operable to receive a first original radio frequency signal via a first interface and the second unit is operable to receive a second original radio frequency signal via a second interface. The second unit is operable to output a first reproduced radio frequency signal via the second interface, the first reproduced radio frequency signal being derived from the first original radio frequency signal. The first unit is operable to output a second reproduced radio frequency signal via one of the first interface and a third interface, the second reproduced radio frequency signal being derived from the second original radio frequency signal. The first interface is operable as a simplex interface when the second reproduced radio frequency signal is output via the third interface and as a duplex interface when the second reproduced radio frequency signal is output via the first interface.

Abstract: A system (100) and method for providing high capacity voice and high speed data communication between user equipment terminals (UEs 104) and a public network (108). Generally, the system (100) includes a community Wireless Local Area Network (WLAN 102) having a centralized base transceiver station (CBTS 114) coupled to a public network (108), and several remote transceiver stations (RTSs 118) each coupled to several UEs (104), and, via a radio link, to the CBTS. In one embodiment, the CBTS (114) and RTSs (118) include a Global Systems for Mobile communication/General Packet Radio Service (GSM/GPRS) transceiver (148, 154) to provide data communication, and a WLAN transceiver (150, 156) to provide voice communication. Preferably, the WLAN transceiver (150, 156) is compatible with an open standard, such as IEEE 802.11.

Abstract: A hub unit is configured to digitize first and second analog radio frequency signals in order to generate first and second digital data, respectively, indicative of the first and second analog radio frequency signals. The first and second analog radio frequency signals are broadcast from first and second base stations, respectively, associated with first and second cellular service providers, respectively, using first and second air interfaces, respectively. The first and second digital data are transported to a radio access node using a shared transport medium. The radio access node is configured to reconstruct versions of the first and second analog radio frequency signals from the first and second digital data, respectively, using first and second digital-to-analog converters and is also configured to generate first data packets from a first data radio frequency signal. The first data packets are communicated to the hub unit using the shared transport medium.

Abstract: An architecture for providing operations and maintenance functionality in an open access wireless signal distribution system. The open access system makes use of a common, shared, distributed radio frequency distribution network and associated network entities that enable a system operator to offer access to wireless infrastructure that maybe shared among multiple wireless service providers (WSPs). The WSPs, or tenants of the operators, may obtain access in a tenant lease-space model. The open access system provides the ability for multiple tenants in a given community to share wireless equipment such as remotely located antenna sites, regardless of their specific requirements for radio frequency (RF) air interface signal protocols and/or management messaging formats. The present invention is directed to an open access Network Management System (NMS) that provides multiple tenants with an appropriate level of access and control over the system elements that carry their signaling.

Abstract: A distributed antenna system comprises a base transceiver station, a plurality of distributed antenna units and a signal routing apparatus. The base transceiver station has a plurality of output ports that generate a plurality of downlink signals having overlapping transmit frequencies and containing different communication content. The different communication content is directed toward each of a plurality of mobile units. The base transceiver station also has at least one uplink receive port that receives an uplink signal. The uplink signal includes communication content received from at least one of the mobile units. The plurality of distributed antenna units have coverage areas that are non-overlapping or only partially overlapping.

Abstract: An architecture is provided for coupling wireless local area network (WLAN) signals between an internetworking device and a remotely located access point using a transport network. The access point is coupled to the transport network for communicating with the internetworking device. The access point includes a wireless local area network (WLAN) access point and an access point remote converter. The WLAN access point receives wireless local area network signals from wireless computing equipment and converts such signals to local area network compatible signals. The access point remote converter receives the local area network compatible signals from the WLAN access point and converts the signals to transport modulated format signals suitable for transmission over the transport network. The transport network also provides a power signal to power at least some components of the access point.

Abstract: A distributed antenna system comprises a base transceiver station, a plurality of distributed antenna units and a signal routing apparatus. The base transceiver station has a plurality of output ports that generate a plurality of downlink signals having overlapping transmit frequencies and containing different communication content. The different communication content is directed toward each of a plurality of mobile units. The base transceiver station also has at least one uplink receive port that receives an uplink signal. The uplink signal includes communication content received from at least one of the mobile units. The plurality of distributed antenna units have coverage areas that are non-overlapping or only partially overlapping.

Abstract: The present invention provides a method and apparatus for localization of a mobile device in a distributed antenna communications system. In accordance with an embodiment of the invention, a distributed antenna system includes a plurality of distributed antennas that are communicatively coupled to a hub. A mobile communications device to be located is communicatively coupled to the hub via one or more of the antennas. The method for locating the mobile device comprises: receiving a message at the hub that identifies the mobile device to be located; discriminating among communications signals received from each of the distributed antennas using a channel and a spreading code to identify a signal from the mobile device; identifying messages from the mobile device to be located; and determining which of the antennas is closest to the mobile device to be located by monitoring received signal strength of the identified signal.

Abstract: An architecture for providing operations and maintenance functionality in an open access wireless signal distribution system. The open access system makes use of a common, shared, distributed radio frequency distribution network and associated network entities that enable a system operator to offer access to wireless infrastructure that maybe shared among multiple wireless service providers (WSPs). The WSPs, or tenants of the operators, may obtain access in a tenant lease-space model. The open access system provides the ability for multiple tenants in a given community to share wireless equipment such as remotely located antenna sites, regardless of their specific requirements for radio frequency (RF) air interface signal protocols and/or management messaging formats. The present invention is directed to an open access Network Management System (NMS) that provides multiple tenants with an appropriate level of access and control over the system elements that carry their signaling.

Abstract: An architecture is provided for coupling wireless local area network (WLAN) signals between an internetworking device and a remotely located access point using a transport network. The access point is coupled to the transport network for communicating with the internetworking device. The access point includes a wireless local area network (WLAN) access point and an access point remote converter. The WLAN access point receives wireless local area network signals from wireless computing equipment and converts such signals to local area network compatible signals. The access point remote converter receives the local area network compatible signals from the WLAN access point and converts the signals to transport modulated format signals suitable for transmission over the transport network. The transport network also provides a power signal to power at least some components of the access point.