Abstract:
The present invention 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:
Disclosed is a base station capable of appropriately configuring a resource on which EPDCCH is located when soft combining is applied. The base station includes configuration section (102) that configures an EPDCCH set in a plurality of subframes, the EPDCCH set being formed of ECCEs to which control information (assignment information) transmitted over the plurality of subframes is assigned; and an assignment section (105) that assigns the control information to any of the ECCEs in each of the plurality of subframes.
Abstract:
A communication apparatus includes a circuitry and a transmitter. In operation, the circuitry generates a Demodulation Reference Signal (DMRS) and generates downlink control information indicating a mapping pattern of the DMRS from a plurality of mapping patterns, and the transmitter transmits the DMRS and the downlink control information. The plurality of mapping patterns include a first mapping pattern and a second mapping pattern. Resource elements used for the DMRS of the second mapping pattern are same as a part of resource elements used for the DMRS of the first mapping pattern. A number of the resource elements used for the DMRS of the first mapping pattern is larger than a number of the resource elements used for the DMRS of the second mapping pattern.
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:
The present disclosure provides a communication method that a base station configures different CSI-RS ports with different periodicity based on UE requirement (e.g. mobility) to reduce CSI-RS overhead. And another method is to transmit partial CSI-RS ports in a cyclic shifted manner to further reduce the overhead. In addition, cyclic shifted transmission of split CSI-RS port groups are proposed to reduce the potential big difference of interference onto different CSI-RS port groups.
Abstract:
A transmitting device includes a controller and a transmitter. The controller, in operation, adds an offset to a transmission power or a transmission power density of first data mapped in a remaining resource other than a data resource, to control a transmission power or a transmission power density of second data mapped in the data resource, for use of a second mapping pattern. A part of a resource on which a reference signal is to be mapped in a first mapping pattern of the reference signal is replaced with the data resource in a second mapping pattern of the reference signal. The transmitter, in operation, transmits a signal including the first data, the second data, and the reference signal.
Abstract:
For use of a second mapping pattern in which a part of a resource on which a DMRS (Demodulation Reference Signal) is to be mapped is replaced with a data resource in a first mapping pattern of the DMRS, control section (23) adds an offset to a transmission power or a transmission power density of first data mapped in a remaining resource other than a data resource to control a transmission power or a transmission power density of second data mapped to the part of a resource. Transmitting section (25) transmits a signal including the first data, the second data, and the DMRS.
Abstract:
This transmission device can notify of a control value pertaining to transmission power without causing an increase in the amount of signaling. A control unit (103) controls transmission power based on a bit sequence notified from a reception device and the association between the bit sequence and a control value pertaining to transmission power; in the association, each bit sequence is respectively associated with a first control value candidate group and a second control value candidate group; when the device is not the subject of cooperative reception, the control unit (103) calculates a transmission power using a control value candidate associated with the notified bit sequence among the first control value candidate group, and when the device is the subject of cooperative reception, the control unit (103) calculates a transmission power using a control value candidate associated with the notified bit sequence among the second control value candidate group.
Abstract:
A wireless communication terminal capable of increasing the utilization efficiency of ACK/NACK resources and suppressing unnecessary PUSCH band reduction while avoiding ACK/NACK collision. The wireless communication terminal has a configuration provided with: a reception unit for receiving a control signal including ARI via an E-PDCCH set from among one or a plurality of E-PDCCH sets; a control unit for determining an offset value indicated by the ARI on the basis of whether or not a resource region that may be taken by a dynamic ACK/NACK resource corresponding to the E-PDCCH set that has received the control signal and a resource region that may be taken by a dynamic ACK/NACK resource corresponding to another E-PDCCH set overlap, and imparting an offset to the ACK/NACK resource according to the value of the ART; and a transmission unit for transmitting the ACK/NACK signal using the determined ACK/NACK resource.
Abstract:
Provided is a wireless communication terminal such that, in a system in which E-PDCCH control information is transmitted, flexible frequency scheduling for the E-PDCCH control information for a plurality of terminals can be performed by restricting ACK/NACK scheduling, while an upstream data resource is ensured. The wireless communication terminal is provided with: a reception unit that receives a control signal via an extended physical downstream control channel; a control unit that determines an ACK/NACK resource for transmitting an ACK/NACK signal on the basis of an association rule such that, in the extended physical downstream control channel transmitting each extended control channel element in a single frequency resource block, arbitrary successive numbers of ACK/NACK resources correspond to the extended control channel elements contained in different frequency resource blocks; and a transmission unit that transmits the ACK/NACK signal by using the determined ACK/NACK resource.