Abstract: A polyurethane composition is provided. The polyurethane composition includes a first part of a first polytetramethylene oxide, a second polytetramethylene oxide, and a castor oil based polyol. The second polytetramethylene oxide has a higher viscosity than the first polytetramethylene oxide. The polyurethane composition also includes a second part of methylene diphenyl diisocyanate. Also provided is a fiber optic cable assembly incorporating the polyurethane composition as an overmold. The overmold has a glass transition temperature of less than ?40° C. measured according to differential scanning calorimetry. Further provided is a method of applying an overmold to a fiber optic cable assembly.

Abstract: A low smoke, zero halogen (LSZH) polymer composition is provided. The LSZH polymer composition includes a polymer resin, and a flame retardant package dispersed within the polymer resin. Less than 25% by weight of the polymer composition is the flame retardant package. The flame retardant package includes an acid source, a carbon source, and an LSZH additive. The LSZH additive includes a polyoxometalate ionic liquid and a synergist carrier. The LSZH polymer composition has a limiting oxygen index of greater than 31%. The LSZH polymer compound is suitable for use in electrical or tele-communication cables.

Abstract: Selective non-distribution of received unlicensed spectrum communications by a remote unit(s) into a distributed communications system (DCS) is provided. In one aspect, the DCS is configured to receive communications signals in unlicensed spectrum from a source transceiver(s) for communications services. The DCS is configured to distribute the received communications signals in unlicensed spectrum to one or more remote units forming respective remote communications coverage areas. To reduce or avoid signal interference when communication signals in unlicensed spectrum are transmitted into the DCS that is also being used for transmissions by a remote transceiver to a remote unit at the same time, received communications signals by the remote units are monitored for unlicensed spectrum. The remote unit is configured to disable or disconnect the reception and/or transmission of the communications signals in the unlicensed spectrum based on the communication signal activity in the unlicensed spectrum.

Abstract: Power management for remote units in a distributed communication system. Power can be managed for a remote unit configured to power modules and devices that may require more power to operate than power available to the remote unit. For example, the remote unit may be configured to include power-consuming remote unit modules to provide distributed antenna system-related services. As another example, the remote unit may be configured to provide power through powered ports in the remote unit to external power-consuming devices. Depending on the configuration of the remote unit, the power-consuming remote unit modules and/or external power-consuming devices may demand more power than is available at the remote unit. In this instance, the power available at the remote unit can be distributed to the power-consuming modules and devices based on the priority of services desired to be provided by the remote unit.

Abstract: Disclosed are optical plug connectors and optical receptacles for making optical connections. In one embodiment, the optical plug connector includes an optical portion having an optical interface and a cover for protecting the optical interface. The cover can translate toward the optical interface when connecting the optical plug connector and a portion of the cover allows transmission of optical signals therethrough.

Abstract: Fifth generation (5G) non-standalone (NSA) radio access system employing virtual fourth generation (4G) master connection to enable dual system data connectivity. The 5G NSA radio access system employs a virtual 4G radio access node (RAN) to provide a logical master data connection to a user mobile communications device, and a 5G RAN to provide an additional, secondary high-speed data plane between the user mobile communications device to a core network. The virtual 4G RAN does not provide an actual 4G radio connection over-the-air to the user mobile communications device. Instead, the signaling transported between the user mobile communications device and the virtual 4G RAN is provided over a non-radio connection, such as an internet protocol (IP) connection. In this manner, the deployment of the 5G NSA radio access system employing the virtual 4G RAN can be achieved without updating existing 4G RANs and/or without deploying a new 4G RAN infrastructure.

Abstract: A transparent wireless bridge for providing access to an optical fiber network comprises a first transceiver outside a building and configured to transmit/receive communication signals to and from the optical fiber network. A first glass sheet attached to an outer side of a window comprises a first antenna communicatively coupled to the first transceiver and configured to transmit and receive communication signals to and from the first transceiver. A second glass sheet is attached to an inner side of the window and comprises a second antenna configured to wirelessly transmit and receive communication signals to and from the first antenna. The wireless bridge also includes a second transceiver located inside the building that is communicatively coupled to the second antenna and configured to wirelessly transmit and receive data to and from the second antenna. The wireless bridge may also be used in conjunction with a wireless drop system.

Abstract: A method of coordinating a plurality of radio access networks (RANs) includes aggregating, with a gateway, communications interfaces between a plurality of RANs and a packet core network through the gateway. A plurality of radio nodes (RNs) in each of the RANs is communicatively coupled to the gateway and to user equipment (UE) devices associated with the RNs in each of the RANs. The gateway also controls and coordinates mobility of the UE devices within and among the RANs.

Abstract: A fiber optic cable comprises a core subassembly, comprising at least one optical transmission element, wherein the optical transmission element comprises at least one optical fiber and a tube surrounding the at least one optical fiber. The fiber optic cable further comprises a jacket surrounding the core subassembly. The jacket is configured as a multi-layered jacket that comprises an inner layer comprising a first flame retardant material, an intermediate layer comprising a second flame retardant material being different from the first flame retardant material of the inner layer, and an outer layer comprising a non-flame retardant material having a lower coefficient of friction than the first and the second flame retardant material.

Abstract: A fiber terminal rack mount with front-to-back fiber routing management is disclosed herein. The terminal rack mount is configured to be mounted in a remote terminal to facilitate fiber management of fiber optic cables routed from fiber optic equipment. In exemplary aspects disclosed herein, the fiber terminal rack mount comprises two vertically oriented panels with a plurality of horizontally oriented shelves positioned therebetween. The panels are configured to mount to vertical rails of a remote terminal cabinet of the fiber terminal. The panels and shelves also define routing channels for routing fiber optic cables therethrough, thereby facilitating front-to-back fiber routing between fiber optic equipment mounted in the fiber terminal. In this manner, as an example, the fiber terminal rack mount may more easily support fiber routing between back-to-back mounted fiber optic equipment, which may increase as fiber optic connectivity density increases.

Abstract: A method for upgrading an access controller that controls and coordinates a plurality of radio nodes (RNs) each associated with a cell in a cluster of cells belonging to a radio access network includes initializing a new access controller. The new access controller is to replace a current access controller currently controlling and coordinating the plurality of RNs cell in the cluster. A most lightly loaded one of the plurality of RNs is identified. All UEs currently attached to the identified RN is caused to be handed off to a neighboring cell in the cluster. After all the UEs have been handed-off from the identified RN, the identified RN is rebooted so that it is being controlled and coordinated by the new access controller. The steps of causing the UEs to be handed-off and rebooting the identified RN are repeated for a second one of the plurality of RNs.

Abstract: A flexible optical ribbon and associated method is provided. The ribbon includes a plurality of optical transmission elements and a polymeric ribbon body surrounding the plurality of optical transmission elements. The ribbon body includes a plurality of recesses formed in the ribbon body, and each recess has a depth extending from the first major surface toward the plurality of optical transmission elements and a length extending along the ribbon body between a first recess end and a second recess end. The first recess end is defined by a concave curved surface of the polymeric ribbon body.

Abstract: Technologies are described for using optical and electrical transmission of a plurality of communications services from a plurality of outside sources to a network of users via a distributed antenna system. The systems and methods disclosed herein provide for distribution of the communications services and for re-routing the services when a failure occurs. These systems and methods detect when there is a failure of the service to the network or within the network, where the failure has occurred, and how to redistribute the services via a switching network or matrix.

Abstract: A modular optical fiber distribution unit and related distribution system is provided. The distribution unit includes a shifted fiber arrangement that allows for modular network assembly. For example, the distribution unit includes a distribution body including a plurality of body optical fibers and a field optical fiber leg including a plurality of field optical fibers including at least one active field optical fiber and at least one inactive field optical fiber. Each active field tether optical fiber is optically coupled to one of the body optical fibers and at least one body optical fiber is not coupled to an active field optical fiber. The positioning of the active and inactive field tether optical fibers in a predetermined manner disclosed herein allows for modular network assembly.

Abstract: A fiber optic cable includes a core assembly including an optical fiber, a polymeric sleeve surrounding the core assembly, water-swellable material integrated with the polymeric sleeve, and a jacket surrounding the polymeric sleeve. The polymeric sleeve is continuous peripherally around the core assembly, forming a continuous closed loop when viewed in cross-section, and continuous lengthwise along a length of the cable.

Abstract: Transformable cable reels, related assemblies and methods are disclosed. The transformable cable reels may be provided in a first reel configuration for spooling on cable to the transformable cable reel and to pay out the spooled cable from the transformable cable reel. Cable spooled on the transformable cable reel may be payed out during cable installations. The transformable cable reel may also be configured in a second reel configuration for storage of any excess cable after cable payout. As one non-limiting example, the volume of the cable reel may be less in the second reel configuration than in the first reel configuration so that less volume is required to store the transformable cable reel. Providing the transformable cable reel in the second reel configuration may make it more feasible to store the transformable cable reel in fiber optic equipment, and/or avoid storing excess cable removed from a cable reel.

Abstract: Time-division duplexing (TDD) in distributed communications systems, including distributed antenna systems (DASs) is disclosed. In one embodiment, a control circuit is provided and configured to control the TDD transmit mode of a DAS to control the allocation of time slots for uplink and downlink communications signal distribution in respective uplink path(s) and downlink path(s). The control circuit includes separate power detectors configured to detect either a transmit power level in a downlink path or a receive power level in an uplink path. If the transmit power detected in the downlink path is greater than receive power detected in the uplink path, the control circuit switches the TDD transmit mode to the downlink direction. In this manner, the control circuit does not have to control the TDD transmit mode based solely on detected power in the downlink path, where a directional coupler may leak uplink power in the downlink path.

Abstract: Systems and methods are disclosed that provide a closed loop power control system including adaptively adjusting the desired target SINR over time so as to ultimately achieve a feasible SINR. In one implementation, a method is provided of optimizing uplink closed loop power control in a RAN in which one or more base stations each service a plurality of mobile stations, including: determining a power level for each mobile station for its respective uplink transmissions, including measuring a current achieved SINR for each mobile station; and for each mobile station, adjusting the power level to be sufficiently high to meet desired transmission characteristics but not so high as to cause unnecessary interference with transmissions from other mobile stations, by adjusting a desired target SINR based on factors selected from the following: current and prior achieved SINRs, current and prior interference measurements, and current and prior transmission power control commands.

Abstract: Embodiments of the disclosure relate to a transceiver circuit employing shared digital signal processing circuitry for communicating radio frequency (RF) analog communications signals received by a remote unit in a wireless distribution system (WDS). A transceiver circuit includes downlink digital signal processing circuitry that receives and processes a downlink digital communications signal(s) having a first downlink digital baseband signal and a second downlink digital baseband signal. A first downlink analog signal path and a second downlink analog signal path share the downlink digital signal processing circuitry. The first downlink analog signal path generates a first downlink analog RF communications signal. The second downlink analog signal path generates a second downlink analog RF communications signal.

Abstract: A fiber optic cable assembly includes first and second fiber optic ribbons and a splice protector. The ribbons are spliced together such that the corresponding spliced fibers at the splice have a common lengthwise axis, widthwise axis orthogonal to the lengthwise axis, and thickness axis orthogonal to the lengthwise and widthwise axes. The splice protector supports the ribbons that are spliced to one another at the splice. The splice protector may include or even consist essentially of an adhesive that provides a flexible support for the splice. The splice protector may be at least half as flexible when cured over the splice as the first and second ribbons in bending about the widthwise axis.