The present invention provides a massive MIMO antenna for wireless communication, the massive MIMO antenna comprising a plurality of antenna elements configured to receive upstream wireless signals and to transmit downstream wireless signals, the antenna elements being arranged in a matrix-like arrangement comprising rows and/or columns of antenna elements, a plurality of transceivers, each coupled to at least one of the antenna elements, and a control unit configured to selectively activate and/or deactivate specific ones of the transceivers. In addition, the present invention provides a respective method for operating a massive MIMO antenna.

This application provides a method for adjusting a half-power angle of an antenna, to adjust a maximum half-power angle or a maximum beam gain of an individual transceiver channel. The method includes: first determining that M antenna elements in N antenna elements connected to a first transceiver channel of an access network device need to be turned on or off, where N>M≥1, and both N and M are integers, that is, a quantity of antenna elements driven by the first transceiver channel needs to be adjusted; and then sending first indication information to the access network device, where the first indication information is used to indicate to turn on or off the M antenna elements.

The present disclosure relates to a wireless communication device and a method for switching an antenna of a wireless communication device that includes a first antenna in an operation state and a second antenna in a standby state. The method includes detecting a first performance parameter of the first antenna, the first performance parameter including at least one of a strength of a received signal at the first antenna and a sensitivity of the first antenna; and when the first performance parameter of the first antenna is lower than a preset threshold, switching the second antenna to the operation state, and switching the first antenna to the standby state. The technical solution can improve a communication quality of the wireless communication device by enabling a standby antenna when performance of an antenna in the operation state has been degraded.

A communication device is described comprising a first antenna, a second antenna and a third antenna; a first transceiver configured to communicate using at least the first antenna; a second transceiver configured to communicate using at least the second antenna; and a controller configured to determine whether the third antenna is to be used by the first transceiver or the second transceiver based on a selection criterion and configured to control the first transceiver to communicate using the first antenna and the third antenna if the controller has determined that the third antenna is to be used by the first transceiver and to control the second transceiver to communicate using the second antenna and the third antenna if the controller has determined that the third antenna is to be used by the second transceiver.

A communication device configured to operate in a Multiple-input Multiple-output (MIMO) operation mode and Single-input Single output (SISO) operation mode and operation mode switching method are described. The communication device can include a transceiver associated with a first antenna, and configured to wirelessly communicate via the first antenna using a first communication technology; a second antenna associated with a second communication technology different from the first communication technology; and a controller coupled to the transceiver. The controller can be configured to: determine communication information corresponding to the first and the second communication technologies; and control the communication device to switch an operation mode of the communication device between the MIMO operation mode and the SISO operation mode based on the determined communication information.

Certain aspects of the present disclosure provide techniques for carrier group based multiple-input multiple-output (MIMO) layers and antenna adaptation. A method that may be performed by a user equipment (UE) includes receiving a configuration of one or more groups of component carriers (CCs) and, for each group of CCs, one or more sets of configured maximum number of MIMO layers. Each set includes a configured maximum number of MIMO layers associated with each CC in the group. The UE receives an indication of at least one of the one or more sets and determines the configured maximum number of MIMO layers associated with each CC in the corresponding group of CCs based on the indication.

An antenna sharing system and a terminal. The antenna sharing system comprises a communication module, and the communication module supports 5 GHz Wi-Fi and LTE. The antenna sharing system further comprises a first antenna and a first multiplexer; the first multiplexer at least comprises two multiplex input ends and a multiplex output end, a first multiplex input end of the first multiplexer is used for receiving and transmitting 5 GHz Wi-Fi secondary signals, a second multiplex input end of the first multiplexer is used for receiving and transmitting LTE secondary signals, and the multiplex output end of the first multiplexer is connected to the first antenna. The solution of the present invention can effectively improve the antenna utilization, and reduce the influences on data throughput of Wi-Fi and LTE while reducing the number of antennas.

An automotive radar system that is switchable between one or more high power modes and one or more increased channel modes. The radar system includes multiple transmit antennas, an integrated circuit including a transmit chain generating a positive transmit signal and a negative transmit signal that together form a differential transmit signal, and a coupling interface. The coupling interface configurably couples the differential transmit signal to two transmit antennas of the multiple transmit antennas to selectively drive the two transmit antennas in either a differential mode or in a power-combining mode that combines power from the positive transmit signal and negative transmit signal to drive a first transmit antenna of the multiple transmit antennas while isolating a second transmit antenna of the two transmit antennas.

This application provides a method for adjusting a half-power angle of an antenna, to adjust a maximum half-power angle or a maximum beam gain of an individual transceiver channel. The method includes: first determining that M antenna elements in N antenna elements connected to a first transceiver channel of an access network device need to be turned on or off, where N>M1, and both N and M are integers, that is, a quantity of antenna elements driven by the first transceiver channel needs to be adjusted; and then sending first indication information to the access network device, where the first indication information is used to indicate to turn on or off the M antenna elements.

The present invention is directed to energy-efficient hibernation in indoor wireless localization systems. A tag passively associates with a detection point (DP) and establishes a reveille time. The tag will awaken at the reveille time and send or receive a beacon to or from its associated DP. If the tag is receiving a beacon, it will awaken, receive, phase-lock its clock based on when the beacon was expected and when it was actually received, and return to hibernation. The DP transmits a scattershot of beacons, one for every tag in the system. If the tag is sending a beacon, it will awaken, send its beacon, and return to hibernation. The DP will receive the beacon and adjust its own clock based on the delay between when the beacon was expected and when it was actually received. The tag will broadcast its location to the DP on a set interval.