A method for a user equipment (UE) in a wireless communication system, includes receiving channel state information reference signal (CSI-RS) for at one antenna port from a network in a subframe, wherein the CSI-RS is mapped to at least one pair of resource elements (REs) per physical resource block (PRB) pair in consecutive orthogonal frequency division multiplexing (OFDM) symbols in the subframe, and wherein the subframe includes two slots, and each slot includes six OFDM symbols based on an extended cyclic prefix (CP).

A method and apparatus of a user equipment (UE) for transmitting and receiving data in a wireless communication system. The UE receives first time division duplex (TDD) uplink-downlink configuration information for a first cell and second TDD uplink-downlink configuration information for a second cell, determines whether a subframe in the first cell is a special subframe and the subframe in the second cell is a downlink subframe according to the first and second TDD uplink-downlink configuration information, and determine, if the subframe in the first cell is the special subframe and the subframe in the second cell is the downlink subframe, not to receive a signal on the second cell in orthogonal frequency division multiplexing (OFDM) symbols that overlaps with at least one of a guard period (GP) or uplink pilot time slot in the first cell.

A method and apparatus of a user equipment (UE) for transmitting and receiving data in a wireless communication system. The UE receives first time division duplex (TDD) uplink-downlink configuration information for a first cell and second TDD uplink-downlink configuration information for a second cell, determines whether a subframe in the first cell is a special subframe and the subframe in the second cell is a downlink subframe according to the first and second TDD uplink-downlink configuration information, and determine, if the subframe in the first cell is the special subframe and the subframe in the second cell is the downlink subframe, not to receive a signal on the second cell in orthogonal frequency division multiplexing (OFDM) symbols that overlaps with at least one of a guard period (GP) or uplink pilot time slot in the first cell.

The present technique relates to a data processing apparatus and a data processing method each of which enables a burden imposed on processing on a reception side to be reduced.

A data processing apparatus produces signaling containing a Null cell number exhibiting the number of Null cells of cells of a sub-frame included in a physical layer frame, and processes the signaling so as for the signaling to be contained in a preamble of the physical layer frame, thereby enabling a burden imposed on processing on a reception side to be reduced. The present technique, for example, can be applied to data transmission complying with the broadcasting standards such as ATSC3.0.

The present technique relates to a data processing apparatus and a data processing method each of which enables a burden imposed on processing on a reception side to be reduced.

A data processing apparatus produces signaling containing a Null cell number exhibiting the number of Null cells of cells of a sub-frame included in a physical layer frame, and processes the signaling so as for the signaling to be contained in a preamble of the physical layer frame, thereby enabling a burden imposed on processing on a reception side to be reduced. The present technique, for example, can be applied to data transmission complying with the broadcasting standards such as ATSC3.0.

This invention aims to appropriately perform random access even when a shortened TTI is used. A user terminal includes a control section which controls communication using cells including at least two cells having different TTIs (Transmission Time Intervals), a transmission section which transmits a random access preamble, and a reception section which receives a response signal to the random access preamble, wherein the control section performs control to receive in a second cell, the response signal to the random access preamble transmitted in a first cell.

A computer readable storage medium is presented, having computer readable program instructions thereon for causing a processor to carry out the steps of: sub-dividing a time slot into consecutive time intervals, the time slot belongs to multiple time slots allocated to a first node for transmitting to a second node using a wireless time-division duplex communication link between the first node and the second node, the second node transmitting during separate time slots allocated to said second node; and disrupting communication between said first node and said second node by transmitting, using a transmitter, respective interference signals during at least some of said time intervals, each of said interference signals being transmitted on one of said frequency bands, wherein for at least two of said time intervals said interference signals are transmitted on different frequency band.

This application provides an information sending and receiving method and an information sending and receiving apparatus, to improve flexibility of sending information carried on a PUCCH. The method includes: determining, by a terminal, m.sub.i uplink symbols in the i.sup.th slot; and sending, by the terminal on the m.sub.i uplink symbols, information carried on a first PUCCH in the k.sup.th slot, where the k.sup.th slot is the k.sup.th slot in K slots used to transmit information carried on first PUCCHs, a value of m.sub.i is the same as a quantity of symbols occupied by the first PUCCH in the k.sup.th slot, K is an integer greater than 1, k is an integer greater than 1 and less than or equal to K, m.sub.i is an integer greater than 0, and i is an integer greater than 0. This application relates to the field of communications technologies.

Systems and methods for point to multipoint communications are provided. In one example, a system includes one or more modal antennas. Each modal antenna is configured to operate in a plurality of modes. The system can include a transceiver configured to communicate with a plurality of client devices over a wireless communication medium via the one or more modal antennas over a plurality of frames. The system can include one or more control devices configured to control the operation of the one or more modal antennas. For each of the plurality of frames communicated to one of the plurality of client devices, the one or more control devices are configured to determine a selected mode of the plurality of modes for the one or more modal antennas and configure the one or more modal antenna in the selected mode for the corresponding frame of the plurality of frames.

Systems and methods for point to multipoint communications are provided. In one example, a system includes one or more modal antennas. Each modal antenna is configured to operate in a plurality of modes. The system can include a transceiver configured to communicate with a plurality of client devices over a wireless communication medium via the one or more modal antennas over a plurality of frames. The system can include one or more control devices configured to control the operation of the one or more modal antennas. For each of the plurality of frames communicated to one of the plurality of client devices, the one or more control devices are configured to determine a selected mode of the plurality of modes for the one or more modal antennas and configure the one or more modal antenna in the selected mode for the corresponding frame of the plurality of frames.