Huawei Technologies Co., Limited

Lanping Gong

Weihong Xiao

Lei Chen

Bo Wang

Haiyang Sun

Linlin Wang

Jun He

Xufeng Chen

Qiaoming Zhang

Zhen Yuan

Lianghong Xiang

An antenna includes: at least three radio frequency interfaces and a feed network, where each of the radio frequency interfaces is connected to a radio frequency channel between the radio frequency interface and a RRU. A first interface is configured to receive a signal from the RRU, and transmit the signal to a second interface by using the feed network. The second interface is configured to send the signal to the RRU. The feed network includes a main feed circuit, a calibration signal circuit, and a switch. The calibration signal circuit is configured to transmit a calibration signal from the first interface to the second interface, where the calibration signal is used to calibrate a phase and an amplitude of the radio frequency channel connected to the first interface. The switch is configured to isolate the calibration signal from a signal on the main feed circuit.

Radio frequency channel calibration method and apparatus, antenna, and base station

A tower mounted amplifier is provided. The tower mounted amplifier includes: a first port, connected to an antenna of a base station; a first band-pass filter, where an input end of the first band-pass filter is connected to the first port; a first amplifier, where an input end of the first amplifier is connected to an output end of the first band-pass filter; a second band-pass filter, where an input end of the second band-pass filter is connected to an output end of the first amplifier, connected to an output end of the second band-pass filter and the base station.

Tower mounted amplifier

Embodiments of the present application disclose a passive intermodulation suppression method and a passive intermodulation suppression system. The method in the embodiments of the present application includes: obtaining, by using a target uplink controllable gain module, a first power Pt of an uplink signal sent by an antenna; obtaining a second power Pb of a signal that is output from an output port of a base station; configuring a target attenuation of the base station; and adjusting the initial gain value based on the target attenuation to keep a gain of the base station constant. According to the method described in the embodiments, the base station can maintain the target attenuation constant in a process of adjusting a gain of the target uplink controllable gain module, thereby reducing a PIM requirement of a passive intermodulation suppression system.

Passive intermodulation suppression method and passive intermodulation suppression system

Embodiments of the present application provide an intra-band combiner-divider and a multisystem combining platform, and the intra-band combiner-divider includes: a first-level duplexer, an intra-band combination unit, an intra-band division unit, and a second-level duplexer. In the embodiments of the present application, two ends of the intra-band combiner-divider are connected to the first-level duplexer and the second-level duplexer, so that the intra-band combiner-divider can separately process uplink and downlink signals, thereby reducing PIM of a communication system and improving receiver sensitivity of a base station.

Intra-band combiner-divider and multisystem combining platform

Embodiments of the present invention relate to a method and an apparatus for presenting an indoor traffic map. The method includes: sending, by a near-end unit of an indoor distribution system, a pseudo carrier to a polled remote unit according to a pre-established polling routing table; receiving operating data collected by the remote unit and a measurement report reported by the terminal; determining traffic map data of the polled remote unit; determining whether the traffic map data meets a traffic map presenting condition, and presenting an indoor traffic map when the traffic map presenting condition is met. In the present invention, remote units are polled sequentially by using a pseudo carrier and a polling routing table, operating data of the remote unit and a measurement report of the terminal are obtained as traffic map data, to perform representation of a traffic map.

Method and apparatus for presenting indoor traffic map

Embodiments of the present invention provide a repeater, including a local unit and a remote unit. The local unit includes a base station interface unit, multiple local basic units and a controller. The remote unit includes multiple remote basic units. The controller is configured to generate, according to a down-tilt angle and/or azimuth angle of a downlink signal instructed by a control instruction, a downlink signal phase for each remote basic unit. The multiple local basic units each are configured to perform, according to the downlink signal phase generated by the controller for a corresponding remote basic unit, phase adjustment on the downlink signal sent by the base station interface unit. The multiple remote basic units each are configured to receive the downlink signal sent by a corresponding local basic unit and to send the downlink signal.

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Shenzhen, China

Lanping Gong