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:
Embodiments of the present disclosure 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:
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:
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:
A method includes obtaining, by a first terminal device, second uplink data of a second terminal device, performing, by the first terminal device, joint coding processing on first uplink data of the first terminal device and on the second uplink data, where the performing the joint coding processing generates jointly coded data that is based on the first uplink data and the second uplink data, and transmitting, by the first terminal device, the first uplink data and the jointly coded data to a network device, where the first uplink data is transmitted to the network device separately from the jointly coded data. The first uplink data may be transmitted on a first transmission resource, and the jointly coded data to the network device may be transmitted on a second transmission resource different from the first transmission resource.
Abstract:
A small-cell subscriber management method includes receiving, by a terminal, a closed subscriber group (CSG) identity broadcast by a small cell, determining whether the CSG identity is in a CSG identity list stored by the terminal, sending, by the terminal, an access request to the small cell when the CSG identity is in the CSG identity list, requesting, by the terminal after successfully accessing the small cell, a current CSG subscriber list of the small cell from the small cell, managing, by the terminal after receiving the current CSG subscriber list of the small cell, the current CSG subscriber list of the small cell, where a management includes adding a subscriber to, removing a subscriber from, or changing a subscriber in the current CSG subscriber list. According to the foregoing method, a management terminal is used to manage the CSG subscriber list to implement convenient management of a small cell.
Abstract:
A data transmission method, includes: detecting, by a first user terminal, PDCCH of second user terminals beyond a cell of the first user terminal, and acquiring modulation and coding scheme information from the PDCCH; estimating interference between the first user terminal and the second user terminals according to the modulation and coding scheme information; selecting a second user terminal having a minimum interference on the first user terminal according to the interference; and multiplexing, by the first user terminal, an uplink time-frequency resource of the second user terminal having the minimum interference to perform D2D data transmission.
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:
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:
A method includes: demodulating a signal transmitted by a first source end that is received to obtain a first log-likelihood ratio; demodulating a signal transmitted by a second source end that is received to obtain a second log-likelihood ratio; demodulating a signal transmitted by a relay node that is received to obtain a third log-likelihood ratio; based on an exclusive OR feature of network coding, processing the first log-likelihood ratio, the second log-likelihood ratio, and the third log-likelihood ratio to obtain a posterior log-likelihood ratio of the first source end; and decoding the signal transmitted by the first source end that is received by using the posterior log-likelihood ratio of the first source end.