A distributed antenna system of the present invention implements duplication by a method of configuring a first headend unit and a second headend unit in an active state or in a standby state and connecting a hub unit or a remote unit to the first headend unit and the second headend unit and by a method of connecting, through a redundancy link, a hub unit or remote units of a branch group branched from and connected to each headend unit, activating the redundancy link according to the control of an active headend unit when an error occurs in a frame transmission path, and changing logical port states of a hub unit or remote units that cannot transmit frames due to the error in order to change the frame transmission path so that frame transmission is possible through the activated redundancy link.

An apparatus is disclosed, the apparatus comprising a means for receiving selection of a relay system associated with a base station (10) of a communications network, the relay system comprising a first antenna (15) for substantially fixed orientation towards an antenna (12) of the base station and a second antenna (16) which is mechanically movable about one or more axes responsive to the control data to provide one of a range of possible orientations. The apparatus may also comprise a means for sending control data to the selected relay system for controlling the orientation of the second antenna, the control data comprising at least positioning instructions received from a node of the communications network for causing positioning of the second antenna to a particular orientation associated with a mobile target object (19).

An apparatus is disclosed, the apparatus comprising a means for receiving selection of a relay system associated with a base station (10) of a communications network, the relay system comprising a first antenna (15) for substantially fixed orientation towards an antenna (12) of the base station and a second antenna (16) which is mechanically movable about one or more axes responsive to the control data to provide one of a range of possible orientations. The apparatus may also comprise a means for sending control data to the selected relay system for controlling the orientation of the second antenna, the control data comprising at least positioning instructions received from a node of the communications network for causing positioning of the second antenna to a particular orientation associated with a mobile target object (19).

A UE may receive at least two baseband signals at two or more antenna or beam ports of the UE over a measurement period, and determine an amount of motion of the UE based on the received at least two baseband signals. In one aspect, the amount of motion of the UE may be determined based on a variation of at least one phase delta of the at least one channel. In another aspect, the amount of motion of the UE may be determined based on a correlation between the at least two baseband signals.

A UE may receive at least two baseband signals at two or more antenna or beam ports of the UE over a measurement period, and determine an amount of motion of the UE based on the received at least two baseband signals. In one aspect, the amount of motion of the UE may be determined based on a variation of at least one phase delta of the at least one channel. In another aspect, the amount of motion of the UE may be determined based on a correlation between the at least two baseband signals.

The spectrum sharing dynamic mode switch in TDMA may allow for the transmission of only one radio mode per transmission time interval (TTI). Such system may address radio interference or retransmission (reTX) failures, among other things.

Provided are a base station signal matching device, and a base station interface unit and a distributed antenna system including the base station signal matching device. The base station signal matching device included in a distributed antenna system receiving a base station signal from at least one base station and transmitting the base station signal to at least one user terminal includes: a signal matching unit receiving a first base station signal from a corresponding base station and matching the first base station signal to be suitable for signal processing of the distributed antenna system; and a signal processing unit receiving the matched first base station signal from the signal matching unit, receiving a matched second base station signal from another base station signal matching device, and combining the matched first base station signal with the matched second base station signal.

Provided are a base station signal matching device, and a base station interface unit and a distributed antenna system including the base station signal matching device. The base station signal matching device included in a distributed antenna system receiving a base station signal from at least one base station and transmitting the base station signal to at least one user terminal includes: a signal matching unit receiving a first base station signal from a corresponding base station and matching the first base station signal to be suitable for signal processing of the distributed antenna system; and a signal processing unit receiving the matched first base station signal from the signal matching unit, receiving a matched second base station signal from another base station signal matching device, and combining the matched first base station signal with the matched second base station signal.

The present disclosure provides for centralized, scheduler-based handling for UEs which transmit data to and receive data from a maneuver coordinator based on V2X communication. Once a UE is aware of the maneuver coordinator, the UE may send a request to the maneuver coordinator for maneuver operation scheduling. The maneuver coordinator then schedules and coordinates the UE's operation.

A system and method are disclosed for providing single-hop communication sessions in a satellite network. A timing offset is selected based on a system timing reference, and used to establishing a common timing reference. A synchronization signal is transmitted from a gateway to a satellite based on time slots aligned with the common timing reference, and subsequently forwarded from the satellite to all terminals managed by the gateway. Communication sessions are initiated by terminals using the common timing reference, and downlink transmissions from the satellite to the terminals are aligned with the synchronization signal.