Abstract: Embodiments of the present invention provide a method and a device for processing interference, wherein according to a first demodulation reference signal DMRS pilot symbol carried by a first subcarrier used by an uplink user equipment, an interference channel matrix of an uplink interference channel from the uplink user equipment to a D2D receiving end is measured, wherein the first subcarrier is a subcarrier shared by a D2D transmitting end and the uplink user equipment; a null space matrix of the uplink interference channel is calculated according to the interference channel matrix; and the signal received by the D2D receiving end via the first subcarrier is processed by using the null space matrix to eliminate an interference signal which comes from the uplink user equipment in the signal.

Abstract: Disclosed is a UE and a method for controlling the UE.

Abstract: Embodiments of the present invention provide a MIMO wireless communication system, a MIMO transmission method, and an apparatus, which relate to the field of communications technologies and are invented to effectively improve transmission efficiency and decrease a transmission delay. The MIMO wireless communication system includes: a base station, a first user equipment, and at least one second user equipment, where the first user equipment performs cellular uplink communication with the base station, and performs device-to-device communication with the at least one second user equipment, and the same time-frequency resource is used in the cellular uplink communication between the first user equipment and the base station and the device-to-device communication between the first user equipment and the second user equipment. The present invention is applicable to wireless communication technologies.

Abstract: Embodiments disclose an antenna information sending method and device, and an antenna information receiving method and device. The method includes: obtaining first antenna information of a terminal device, where the first antenna information includes at least one or more of a maximum number of layers for uplink spatial multiplexing that are supported by the terminal device, an antenna number supported by the terminal device, or whether the terminal device supports smart switch on/off of UE's antenna ports. The method also includes sending the first antenna information to a base station. In this way, the terminal device can control, according to a service requirement of the terminal device, an antenna deployed on the terminal device, and report antenna information of the terminal device to the base station in a timely manner.

Abstract: The present invention provides a D2D communication method and a D2D communication device. The method includes: determining a second time slot for transmitting D2D data according to a first time slot for transmitting D2D signaling to a D2D receiver and a synchronous transmission relationship between the D2D signaling and the D2D data, the second time slot being after the first time slot; determining a third time slot for transmitting uplink control information in cellular communication according to the second time slot, the uplink control information being used for indicating an uplink radio resource in the second time slot, and the third time slot being before the second time slot; demodulating the uplink control information in the third time slot to acquire the uplink radio resource in the second time slot; multiplexing the uplink radio resource in the second time slot to perform D2D communication with the D2D receiver.

Abstract: Embodiments provide a control method for a mobile terminal antenna, and a mobile terminal. By means of the control method for a mobile terminal antenna, and the mobile terminal, the mobile terminal can determine, according to a specific application scenario, for example, information such as a service that needs to be executed and an environment sensed, a quantity of antennas that should be enabled.

Abstract: The present invention discloses a communication method that is based on a visible light source and a transport device. In the solution, before a visible light signal is generated, related information carried in the visible light signal is processed by using orthogonal sequences, and different visible light signals processed by using the orthogonal sequences do not interfere with each other. In this way, even if an optical receiving device receives multiple visible light signals, because the received multiple visible light signals are orthogonal to each other, the visible light signals can be accurately received.

Abstract: A method for controlling an intelligent wearable device, including generating, by a terminal device, a first power-off instruction, where the first power-off instruction is used to instruct the terminal device to power off; before the terminal device powers off, generating, by the terminal device, a second power-off instruction and sending the second power-off instruction to the intelligent wearable device associated with the terminal device, where the second power-off instruction is used to instruct the intelligent wearable device to power off or disable a communications module of the intelligent wearable device. By using the technical solutions provided in the embodiments of the present disclosure, power consumption of the intelligent wearable device can be reduced. In addition, the embodiments of the present disclosure further provide a corresponding apparatus and system.

Abstract: Embodiments of the present invention provide an antenna apparatus, including multiple antenna elements, where the antenna element includes a dielectric plate, one two-antenna array element, and one parasitic element; the two-antenna array element is located at the front of the dielectric plate; the parasitic element is located on the back of the dielectric plate, and a location of the two-antenna array element falls within an area of the parasitic element; a first antenna and a second antenna that are in the two-antenna array element are bent slot slot antennas symmetrical to each other with respect to a central axis between the first antenna and the second antenna; the first antenna is formed by connecting three sections.

Abstract: The present invention relates to the field of communications technologies, and discloses a method, an apparatus, and a system for suppressing interference in a massive multiple-input multiple-output system, which overcome a disadvantage of sensitivity to a backhaul delay during an inter-cell interference cancellation process in an existing massive multiple-input multiple-output system. A specific embodiment of the present invention includes: obtaining channel correlation matrixes of all links, and further calculating a combined outer precoder set according to the channel correlation matrixes, where each combined outer precoder includes at least one outer precoder, and the outer precoder is a semi-unitary matrix and is not sensitive to a backhaul delay. Technical solutions of the present invention are mainly applied to a process of processing interference in a massive multiple-input multiple-output system.

Abstract: Embodiments of the present invention provide a channel state information (CSI) feedback method and apparatus, user equipment, and a base station. The method, performed by a user equipment device, includes: pre-synchronizing, between the user equipment device and a base station, a basis matrix that includes sparsity of CSI in a frequency domain and a space domain; receiving pilot information from the base station; determining, according to the pilot information, a CSI information matrix that includes information about the frequency domain and the space domain of CSI; determining data by using the CSI information matrix; and feeding back the data to the base station, so that the base station restores the corresponding CSI information from the data by using the basis matrix.

Abstract: The present invention provides a D2D communication method and a D2D communication device. The method includes: determining a second time slot for transmitting D2D data according to a first time slot for transmitting D2D signaling to a D2D receiver and a synchronous transmission relationship between the D2D signaling and the D2D data, the second time slot being after the first time slot; determining a third time slot for transmitting uplink control information in cellular communication according to the second time slot, the uplink control information being used for indicating an uplink radio resource in the second time slot, and the third time slot being before the second time slot; demodulating the uplink control information in the third time slot to acquire the uplink radio resource in the second time slot; multiplexing the uplink radio resource in the second time slot to perform D2D communication with the D2D receiver.

Abstract: A hybrid automatic repeat request method includes receiving a packet sent by a transmit end; checking N data sub-blocks included in the packet, and generating feedback information according to a check result, where the feedback information includes N check characters corresponding to the N data sub-blocks, and the check character is an acknowledgment character ACK or a negative acknowledgment character NACK; and returning the feedback information to the transmit end. In technical solutions of the present disclosure, feedback information that includes N check characters corresponding to N data sub-blocks of a packet is used and the feedback information is returned to a transmit end, so that a data sub-block can be selected, according to the negative acknowledgment character NACK, to perform retransmission. Therefore, the transmit end can adaptively retransmit a data sub-block having an error, thereby improving resource utilization and reducing a transmission delay.

Abstract: Disclosed are a method and a system for transmitting a data stream, aiming at increasing system capacity. The method includes: transmitting, by a first sending end, a coded first data stream to a first receiving end, and transmitting, by a second sending end, a coded second data stream to a second receiving end on time-frequency resources occupied by transmission of the first data stream by the first sending end; decoding, by the first receiving end, a first received signal received to obtain a first decoded result, and transmitting at least one decoded result in the first decoded result to the second receiving end; and decoding, by the second receiving end, a second received signal received, by using the at least one decoded result in the first decoded result to obtain a second decoded result.

Abstract: The present invention provides a D2D communication method and a D2D communication device. The method includes: determining a second time slot for transmitting D2D data according to a first time slot for transmitting D2D signaling to a D2D receiver and a synchronous transmission relationship between the D2D signaling and the D2D data, the second time slot being after the first time slot; determining a third time slot for transmitting uplink control information in cellular communication according to the second time slot, the uplink control information being used for indicating an uplink radio resource in the second time slot, and the third time slot being before the second time slot; demodulating the uplink control information in the third time slot to acquire the uplink radio resource in the second time slot; multiplexing the uplink radio resource in the second time slot to perform D2D communication with the D2D receiver.

Abstract: A multiple-antenna system includes a planar inverted-F antenna PIFA of a first type, which includes a metallic ground plane, a dielectric plate, a radiation patch, a probe-type feeding unit, and a metallic shorting pin. The system also includes a PIFA of a second type perpendicular to the PIFA of the first type and including a metallic ground plane, a radiation patch, a feeding unit, and a metallic shorted patch. The radiation patch is connected to the metallic ground plane by using the feeding unit and the metallic shorted patch. Isolation stub is located on an edge of a side, close to the PIFA of the second type, of the upper surface of the dielectric plate of the PIFA of the first type.

Abstract: The present invention provides a signal transmission method, system, and device, where the method includes: setting K virtual users, where each virtual user is associated with one base station; obtaining base station precode and user precode corresponding to each of the K virtual users; splitting a baseband signal to the K virtual users, and obtaining a split baseband signal corresponding to each of the K virtual users; processing, according to the base station precode and the user precode corresponding to each virtual user, the split baseband signal corresponding to each virtual user, and obtaining an uplink signal corresponding to each virtual user; and obtaining timing advances {t1, t2, . . . , tK} of base stations corresponding to the K virtual users, and when max(t1, t2, . . . , tK)?min(t1, t2, . . . , tK)<B, transmitting, through an antenna, the uplink signal corresponding to the virtual user to the base station corresponding to each virtual user.

Abstract: Embodiments of the present patent application relate to a MIMO detection method and apparatus for a transmit signal. The method includes removing one group of column vectors from an original channel matrix to generate a corresponding first channel matrix and multiplying a conjugate transpose matrix of a first matrix by the first channel matrix to obtain an equivalent channel matrix, and multiplying the conjugate transpose matrix of the first matrix by an original received signal vector to obtain an equivalent received signal vector. The method also includes calculating a Euclidean distance between the equivalent received signal vector and a first vector to obtain a Euclidean distance set. The method also includes obtaining a second transmit signal vector set by using the Euclidean distance set, and detecting a transmit signal vector according to the original received signal vector, the original channel matrix, the second transmit signal vector and the second transmit signal vector set.

Abstract: Embodiments of the present invention disclose a wireless access method, device, and system. The method includes: sending pilot signal strength or channel characteristics to a central processing node, where the pilot signal strength or channel characteristics are fed back by a user terminal within the coverage area of a wireless access node and are between the wireless access node and the corresponding user terminal; receiving access indication information of the user terminal, which is fed back by the central processing node and is determined according to the pilot signal strength or channel characteristics, where the access indication information of the user terminal includes an identifier of the wireless access node connected with the user terminal and a corresponding coding and modulation scheme; and sending the identifier of the wireless access node connected with the user terminal and the corresponding coding and modulation scheme to the corresponding user terminal.

Abstract: The application provides a receiving method in cooperative communications. A signal-receiving node demodulates a first signal received from a local end to obtain a first log-likelihood ratio. The signal-receiving node further demodulates a second signal received from a relay node to obtain a second log-likelihood ratio. The second signal is a signal obtained by the relay node through network coding the first signal and a third signal received from a peer end. The signal-receiving node calculates a prior log-likelihood ratio according to the first log-likelihood ratio and the second log-likelihood ratio, and decodes the second signal by using the prior log-likelihood ratio to obtain the third signal.