Abstract: A radio communication apparatus includes spreading circuitry that spreads a response signal using a first set of orthogonal sequences to produce a spread response signal. Each orthogonal sequence in the first set has a first length. The spreading circuitry also spreads a reference signal using a second set of orthogonal sequences to produce a spread reference signal. Each orthogonal sequence in the second set has a second length that is shorter than the first length. A radio transmitter transmits the spread response signal and the spread reference signal.

Abstract: The present disclosure provides a communication method, base station and user equipment for configuring a parameter table in a wireless communication system including a base station and a user equipment, the communication method comprising: defining at both the base station and the user equipment a parameter table which includes whole entries of a legacy parameter table and extended entries; and transmitting from the base station to the user equipment a bitmap indication which indicates a sub-table selected from the parameter table, wherein the number of the entries in the sub-table is the same as in the legacy parameter table.

Abstract: Provided are a user equipment and a wireless communication method for LAA. The user equipment comprises: a receiver operative to receive a UL grant which schedules a subframe for UL transmission; a first circuit operative to perform LBT; a transmitter operative to transmit a PUSCH in the scheduled subframe starting from one available starting position of multiple candidate starting positions in the scheduled subframe if the LBT is successful. According to present disclosure, it is possible to increase the possibility that PUSCH could be sent in the scheduled subframe after LBT.

Abstract: To efficiently transmit a sounding reference signal. One or more downlink BWPs are configured in a serving cell, one or more uplink BWPs are configured in a serving cell, each BWP of the one or more downlink BWPs is identified by a downlink BWP index, each BWP of the one or more uplink BWPs is identified by the uplink BWP index, and in a case that one of the one or more downlink BWPs configured is activated in a serving cell, one of the one or more uplink BWPs configured is activated in a serving cell, and an SRS transmission in one or more serving cells of a plurality of the serving cells is triggered, the SRS for the BWP indicated by the uplink BWP index activated in the serving cell activated is transmitted.

Abstract: Provided are a wireless device and a wireless communication method in a wireless communication network comprising multiple wireless devices capable of communicating with each other directly, the wireless device comprising: a processing circuitry operative to multiplex data with a scheduling assignment message, into transmission information; and a transmitter operative to transmit the transmission information in a scheduling assignment period, to another wireless device in the wireless communication network, wherein the scheduling assignment message is used for indicating data transmission resource in the scheduling assignment period or in a previous scheduling assignment period.

Abstract: Provided are wireless communication methods for D2D communication and UEs therefor. A wireless communication method involves transmitting either a first DCI or a second DCI based on whether a first UE and a second UE are to be in a communication type of groupcast or unicast. In the wireless communication methods, the first DCI and the second DCI are scrambled by the UE ID of the second UE if the first UE and the second UE are in the communication type of unicast upon transmitting the first DCI and the second DCI, and the first DCI and the second DCI are scrambled by the group ID if the first UE and the second UE are in the communication type of groupcast upon transmitting the first DCI and the second DCI.

Abstract: Provided is a receiver device that can switch between transmission methods, while minimizing increase in the number of blind decryption iterations and the amount of signaling needed for acknowledgement. In this device, a receiver part (201) receives a signal mapped to any of a plurality of mapping candidates; and according to application levels established for each of the plurality of mapping candidates, a control signal processor (205) performs blind decryption of the plurality of mapping candidates, employing either a first transmission method using a single antenna port to carry out precoding based on feedback information from the receiver device, or a second transmission method involving transmission diversity employing multiple antenna ports.

Abstract: The present disclosure provides a wireless communication method and an eNode B and user equipment therefor. The method comprises a step of transmitting multiple PDCCH or EPDCCH repetitions respectively in multiple successive downlink subframes with a transmission repetition number and a transmission starting subframe. The transmission starting subframe is selected from a first starting subframe set corresponding to the first repetition number or a second starting subframe set corresponding to the second repetition number. The subframe indexes of any two adjacent starting subframes in the first starting subframe set are offset by a same first index interval, the subframe indexes of any two adjacent starting subframes in the second starting subframe set are offset by a same second index interval, and the second index interval is an integral multiple of the first index interval.

Abstract: The present disclosure aims at allowing a demodulation reference signal (DMRS) pattern suitable for a terminal to be selected from among a plurality of DMRS patterns including Legacy DMRS and Reduced DMRS. Disclosed is a terminal including: reception section 21 that receives uplink control information; control section 23 that determines a specific mapping pattern from among a plurality of mapping patterns for an uplink DMRS on the basis of the control information; and DMRS generating section 24 that generates a DMRS according to the specific mapping pattern.

Abstract: Where first and second reference signals for a first and second communication system, respectively, are transmitted, resources that affect a reception apparatus compatible only with the first communication system can be minimized, and the throughput can be prevented from being deteriorated. As resources for a reference signal CSI-RS for LTE-A, last half symbols in a time direction of a resource unit RB/Sub-frame defined in a frequency-time domain are used, and the CSI-RS is allocated in a position up to the last two symbols or in the last symbol, or the like, of a particular RB/Sub-frame and transmitted when a reference signal 4RS for LTE is transmitted to a reception apparatus in addition to transmitting CSI-RS for LTE-A. The reception apparatus receives CSI-RS allocated in the last half symbol of RB/Sub-frame based on CSI-RS allocation information, measures channel quality by using this CSI-RS, and transmits and reports feedback information.

Abstract: The present disclosure provides a wireless communication method, a transmission/reception point, a user equipment and a wireless communication system, the wireless communication method comprising a step of: receiving the UL/DL configuration for the UE in a common search space of a specific time/frequency resource associated with a specific TP/RP, wherein, the UE is attached to the specific TP/RP, and the association between a number index of the specific TP/RP and an index of the specific time/frequency resource is predefined.

Abstract: A data alignment method capable of preventing degradation in demodulation performance due to variation in signal qualities when a data signal to which a Turbo code is applied is transmitted simultaneously from a plurality of cells. The method divides signal components to be used for data alignment into resources common to all the cells and resources dependent on the cells and transmits encoded and rate-matched data with the first half thereof aligned to the resources common to all the cells and the second half thereof aligned to the resources dependent on the cells.

Abstract: To efficiently transmit a sounding reference signal. In order for a base station apparatus and a terminal apparatus in a radio communication system to efficiently provide a terminal apparatus, a base station apparatus, a communication method, and an integrated circuit, a transmitter configured to transmit a sounding reference signal, and a receiver configured to receive a first channel state information calculation reference signal (CSI-RS) in a BandWidth Part (BWP) activated in downlink of a first serving cell are included, wherein a first spatial domain transmission filter (transmission beam, precoder) is calculated using the first CSI-RS, and a configuration parameter for transmitting the sounding reference signal is received using the first spatial domain transmission filter.

Abstract: To efficiently transmit a sounding reference signal. In order for a base station apparatus and a terminal apparatus in a radio communication system to efficiently provide a terminal apparatus, a base station apparatus, a communication method, and an integrated circuit, a transmitter configured to transmit a sounding reference signal, and a transmitter configured to transmit a first sounding reference signal in a BandWidth Part (BWP) activated in uplink of a first serving cell are included, wherein a spatial domain transmission filter identical to a spatial domain transmission filter used to transmit the first sounding reference signal is used, and a configuration parameter for transmitting a second sounding reference signal is received.

Abstract: To efficiently transmit a sounding reference signal. In order for a base station apparatus and a terminal apparatus in a radio communication system to efficiently provide a terminal apparatus, a base station apparatus, a communication method, and an integrated circuit, a transmitter configured to transmit a sounding reference signal, and a receiver configured to receive a first downlink signal in a BandWidth Part (BWP) activated in downlink in a first serving cell are included, wherein a spatial domain transmission filter identical to a spatial domain reception filter used to receive the first downlink signal is used, and a configuration parameter for transmitting the sounding reference signal is received.

Abstract: A wireless communication method includes receiving a reference signal and a data signal, based on a coverage enhancement level represented by a number of transmission repetitions; processing the reference signal and the data signal received by the receiving; setting a number of resource elements for transmitting the reference signal based at least on a channel type; and setting usage of resource elements indicated by a System Information Block (SIB). The reference signal is a Cell-specific Reference Signal (CRS) or a Demodulation Reference Signal (DMRS).

Abstract: Provided are an eNB, a UE and wireless communication methods. The eNB, in an embodiment, includes circuitry operative to fill a SPS activation/deactivation field in a DCI with a predetermined pattern of bits; and a transmitter operative to transmit the DCI to a first UE for the first UE to start periodically transmitting signals to a second UE or stop periodically transmitting signals to the second UE based on the SPS activation/deactivation field. The DCI is in a SPS format formed by adopting part or all bits of at least one field of DCI format 5 as the SPS activation/deactivation field, and information supposed to be transmitted in the at least one field is indicated with the assistance of or by RRC or MAC signaling.

Abstract: The present disclosure provides a band usage information generating and reporting method, a charging method, an eNB, a CN, a MME and a UE. The eNB and the UE can generate band usage information for charging, and report the band usage information to the CN, wherein the band usage information involves band usage of at least a first band and a second band, and traffic is assigned to respective bands by the eNB. The Counting entity at the eNB or UE can count the data volume of each band or ratio of data volume via different bands as the band usage information based on the scheduling information of the data. The Charging system located in the CN can process the charging and generate a bill according to the reported band usage information.

Abstract: The present disclosure provides a method of generating codebook in a wireless communication system with multiple antenna arrays, as well as a wireless communication system, base station and terminal using the codebook for communication. The method comprises steps of: providing a basic codebook which contains multiple pre-coding matrices; and assigning phase offsets to certain pre-coding matrices in the basic codebook to form a codebook with phase offset. The feedback overhead from a client to a base station side is reduced and a good precision of feedback for multi-antenna array is kept by applying the method of generating codebook and using the generated codebook in the wireless communication system, base station and terminal.

Abstract: In order to provide a transmission device and transmission method with which a response signal for random access preamble transmitted from a preamble transmission device is efficiently transmitted, setting unit in base station sets a first resource candidate group, which enables terminal capable of receiving a latch response transmitted by demodulation reference signal (DMRS) transmission to be selected, and a second resource candidate group, which enables terminal incapable of receiving a latch response transmitted by DMRS transmission but capable of receiving a latch response transmitted by cell-specific reference signal (CRS) transmission to be selected. Control unit selects DMRS transmission as the latch response transmission method when a resource in which latch preamble has been received is included in the first candidate group, but selects CRS transmission as the latch response transmission method when the resource is included in the second resource candidate group.