This invention is a transmission device capable of enhancing the reception characteristics of a terminal when employing transmit diversity using two antenna ports in an ePDCCH. In a base station (100) that transmits a reference signal to a terminal (200) using two antenna ports, a setting unit (102), on the basis of the reception quality of the terminal, sets as the aforementioned two antenna ports either a first antenna port pair for which DMRS (reference signals) do not undergo mutual code multiplexing, or a second antenna port pair for which the DMRS do undergo code multiplexing. A transmitter (109) transmits the DMRS from the two antenna ports set in the setting unit (102).

Examples provide a determination circuit and apparatus, a mobile transceiver, a communication device, a method for determining, a computer program and a storage to determine a spatial transmission or reception mode. The determination circuit (10) is configured to determine a spatial transmission or reception mode for a mobile transceiver (100). The determination circuit (10) comprises at least one sensor (12) configured to sense attenuating object information, and a control module (14) configured to determine the spatial transmission or reception mode based on the sensed attenuating object information. The control module (14) is configured to control the spatial transmission or reception mode of the mobile transceiver (100).

A communication device includes a base, a signal transceiver, a first antenna array and a second antenna array. The signal transceiver is configured to up-convert or down-convert the radio frequency signals. The first antenna array is disposed on the base and electrically coupled to the transceiver. The first antenna array is configured to receive or transmit a first radio frequency signal along a first orientation. The first radio frequency signal is transmitted between the first antenna array and the transceiver. The second antenna array is disposed on the base and electrically coupled to the first antenna array. The second antenna array is configured to receive or transmit a second radio frequency signal along a second orientation. The first radio frequency signal is transmitted between the second antenna array and the transceiver, via the first antenna array.

Provided in an embodiment of the present disclosure are a mobile terminal and an antenna connection method. The mobile terminal includes a controllable switch, a network path, and an antenna. One end of the controllable switch is connected to the antenna, and the other end of the controllable switch is connected to the network path. The controllable switch is configured to control a connection between the network path and the antenna. The antenna is configured to receive and transmit signals, and includes a first antenna and a second antenna, and a radiation performance of the first antenna is higher than a radiation performance of the second antenna. The network path is configured to provide a network service for the mobile terminal, and includes a first network path and a second network path.

An measurement method and a terminal, where the method includes: determining, by a first antenna selection module in terminal, at least two measured antennas, setting the at least two measured antennas as a first measurement antenna, adding the first measurement antenna to an occupied antenna set; determining measurement duration of the first measurement antenna; performing a measurement operation on the first measurement antenna; determining, by a second antenna selection module, a second measurement antenna and measurement duration of the second measurement antenna based on the occupied antenna set and the measurement duration of the first measurement antenna, adding the second measurement antenna to the occupied antenna set; performing a measurement operation on the second measurement antenna; and determining, a measurement result of the first measurement antenna and a measurement result of the second measurement antenna when the measurement duration of the first measurement antenna ends.

All data symbols used in data transmission of a modulated signal are precoded by hopping between precoding matrices so that the precoding matrix used to precode each data symbol and the precoding matrices used to precode data symbols that are adjacent to the data symbol in the frequency domain and the time domain all differ. A modulated signal with such data symbols arranged therein is transmitted.

An apparatus and method configure a diversity antenna in a portable terminal. The apparatus includes a first antenna, a second antenna, a first communication unit for processing a first communication scheme signal communicated through the first antenna, a second communication unit for processing a second communication scheme signal communicated through the second antenna, and a control unit for configuring the first antenna as a diversity antenna for the second communication unit when the first communication unit is not driven.

To provide a terminal apparatus and a communication method capable of improving reliability and frequency efficiency in a case of transmission by beamforming. Provided are a higher layer processing unit configured with demodulation reference signal (DMRS) antenna port groups for indicating two groups of antenna ports of a DMRS, a receiver configured to receive the DMRS, downlink control information (DCI), and a downlink shared channel (PDSCH), and a decoding unit configured to decode the PDSCH, wherein the PDSCH includes a transport block, and in a case that the number of the transport blocks configured in the DCI is one, the PDSCH demodulated using a DMRS of a first group and/or the PDSCH demodulated using a DMRS of a second group is used to decode one transport block.

A communication method is performed by a terminal and includes: determining a first decoding mode for downlink control information; wherein the downlink control information is received on one or more candidate physical downlink control channels in one or more beam directions, wherein the first decoding mode includes at least one of: performing individual decoding on the downlink control information received on the one or more candidate physical downlink control channels; or performing combined decoding on the downlink control information received on the one or more candidate physical downlink control channels.

Various improvements are desired for point-to-multipoint (PTM) transmission, where a network sends the PTM transmission to multiple user equipments (UEs). The apparatus may be an UE. The UE receives, from a network, a downlink transmission configuration indicating a transmit diversity downlink transmission mode of a plurality of downlink transmission modes, configures downlink communication based on the transmit diversity downlink transmission mode according to the downlink transmission configuration, and receives a service via PTM downlink transmission based on the transmit diversity transmission mode. In another aspect, The UE receives, from a network, a downlink transmission configuration indicating one of a plurality of downlink transmission modes, configures downlink communication based on the one of the plurality of downlink transmission modes according to the downlink transmission configuration, and receives a service via PTM transmission based on the one of the plurality of downlink transmission modes that corresponds with the service.