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: A remote unit of a distributed antenna system includes: a transceiver configured to communicate RF signals between a master unit of the distributed antenna system and a terminal device, and receive downlink RF signals from a base station; and signal processing circuitry configured to provide downlink signals to the master unit. The remote unit receives instructions from a host unit of the distributed antenna system to establish a communication link with the base station in response to detecting a malfunction with respect to an additional communication link between the master unit and an additional base station.

Abstract: A mobile communication system includes: a first antenna for receiving communication signals; processing circuitry for processing received communication signals; a second antenna for transmitting processed signals. The processing circuitry utilizes at least one configurable setting for processing received communication signals, the configurable setting being adaptable for varying the processing of received communication signals as the system moves through a mobile environment.

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: A communication system includes a receive antenna for receiving communication signals, processing circuitry for processing the received communication signals and repeating the signals for further transmission and at least one transmit antenna for transmitting the repeated signals. The processing circuitry utilizes configurable settings for controlling the operation of the communication system and the configurable settings are variable for varying the operation of the system. The processing circuitry is further operable for receiving inputs regarding current operating conditions of the communication system and for selectively adapting the configurable settings of the system based upon the operating condition inputs.

Abstract: A remote unit of a distributed antenna system includes: a transceiver configured to communicate RF signals between a master unit of the distributed antenna system and a terminal device, and receive downlink RF signals from a base station; and signal processing circuitry configured to provide downlink signals to the master unit. The remote unit receives instructions from a host unit of the distributed antenna system to establish a communication link with the base station in response to detecting a malfunction with respect to an additional communication link between the master unit and an additional base station.

Abstract: Transport of differential signals is provided. In one aspect, a telecommunications system includes a first unit and a second unit. The first unit can calculate a differential signal from an original signal. The differential signal can represent a change in signal levels between constant time intervals in the original signal. The second unit can estimate the original signal from the differential signal received from the first unit over a communication medium.

Abstract: A telecommunications system is provided that includes a unit for communicating channelized digital baseband signals with remotely located units. The channelized digital baseband signals include call information for wireless communication. The unit includes a channelizer section and a transport section. The channelizer section can extract, per channel, the channelized digital baseband signals using channel filters and digital down-converters. The transport section can format the channelized digital baseband signals for transport together using a transport schedule unit for packetizing and packet scheduling the channelized digital baseband signals. A signal processing subsystem can control a gain of uplink digital baseband signals, independently, that are received from the remotely located units prior to summing the uplink digital baseband signals.

Abstract: One embodiment is directed to a system comprising a first converter unit configured to receive a first modulated enterprise signal from an enterprise base station, demodulate the first modulated enterprise signal, extract enterprise data from the demodulated enterprise signal, and transmit the enterprise data to a modem over a wideband wireless communication network. The system further comprises a second converter unit configured to receive the enterprise data from the modem. The modem is configured receive the enterprise data from the wideband wireless communication network. The system is configured to create a second modulated enterprise signal corresponding to the first modulated enterprise signal using the enterprise data and wirelessly transmit the second modulated enterprise signal to an enterprise mobile station.

Abstract: The present disclosure describes devices, systems, and methods for synchronizing multiple-input/multiple-output (“MIMO”) signals or other signals in telecommunication systems. Some aspects may involve transmitting signals between a head-end unit and remote units of a telecommunication system. A first delay of a signal path between the head-end unit and a first remote unit of the remote units may be determined to be greater than each delay of signal paths between the head-end unit and other remote units. Based on the first delay, the telecommunication system may be configured to delay transmission of additional signals such that the additional signals are simultaneously transmitted to another unit by either the head-end unit or the remote units.

Abstract: Certain features relate to unequal distribution of transmitters and receivers in a distributed antenna system (DAS). Remote units in the DAS can be configured as transmitting remote units, receiving remote units, or remote transceiver units that can transmit and receive wireless signals. In some configurations, the DAS can be configured with a greater number of transmitting remote units than receiving remote units. In other configurations, the DAS can be configured with a greater number of receiving remote units. In some aspects, unequal distribution of transmitters and receivers can be obtained by allocation of transmission frequencies and receiver frequencies in the DAS.

Abstract: One embodiment is directed to an uplink signal combiner that is configured to receive, via the data network, data packets from the remote antenna units. Each of the data packets includes respective control data and respective user data. The respective control data include data for managing a communication link between a baseband unit and a respective remote antenna unit. The respective user data represents a respective uplink signal received by each of the remote antenna units from one or more mobile stations. The uplink signal combiner is configured to generate additional user data representing a first combined uplink signal by combining the user data extracted from the data packets. The uplink signal combiner is configured to transmit an additional data packet to the baseband unit. The additional data packet includes the additional user data and additional control data derived from the control data from the received data packets.

Abstract: One embodiment is directed to a system comprising a first signal path configured to receive a first uplink signal and a second signal path configured to receive a second uplink signal. The system further comprises a correlator communicatively coupled to the first signal path and the second signal path and configured to produce correlation data indicative of any correlation between the first uplink signal and the second uplink signal. The system further comprises a comparator communicatively coupled to the correlator and configured to cause, based on receiving the correlation data, a first variable gain device in the first signal path to adjust a gain of the first uplink signal and a second variable gain device in the second signal path to adjust a gain of the second uplink signal. Other embodiments are disclosed.

Abstract: Systems and methods for automatically configuring a distributed antenna system are provided. A configuration sub-system of the distributed antenna system can identify signal parameters for downlink signals received from one or more base stations via inputs of a unit in the distributed antenna system. The configuration sub-system can automatically determine a configuration plan for the distributed antenna system based on the automatically identified signal parameters. The configuration plan specifies how to combine subsets of the downlink signals for routing to remote antenna units of the distributed antenna system.

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

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 and aspects of the present invention are directed to a distributed antenna system having a downlink communication path, an uplink communication path, and a non-duplexer isolator sub-system. The downlink communication path can communicatively couple a transmit antenna to a base station. The uplink communication path can communicatively couple a receive antenna to the base station. In one aspect, the non-duplexer isolator sub-system can be electronically configured for isolating uplink signals traversing the uplink communication path from downlink signals. In another aspect, a non-duplexer isolator sub-system can be configurable in one or more mechanical steps selecting a frequency response. In another aspect, a non-duplexer isolator sub-system can include an active mitigation sub-system.

Abstract: A master unit for use within a distributed antenna system includes: re-sampling devices configured to output re-sampled digital downlink signals by re-sampling digital downlink signals at customized resample rates based on at least one factor, the re-sampled digital downlink signals having a smaller bandwidth than the digital downlink signals; and a framer 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 remote units of the distributed antenna system, wherein the one or more remote units of the distributed antenna 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 master unit.

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: A remote unit of a distributed antenna system is disclosed that can communicate analog RF signals with both base stations and terminal devices in a coverage zone serviced by the remote unit. In some aspects, the remote unit can include a signal processing module and a transceiver. The transceiver can communicate RF signals between a master unit of the distributed antenna system and a terminal device. The transceiver can also receive analog downlink RF signals from a base station. The signal processing module can convert the analog downlink RF signals to digital downlink signals and provide the digital downlink signals to the master unit.