The present invention is designed to provide a user terminal, a radio base station and a radio communication method of novel structures that can achieve a good communication environment. A radio base station non-orthogonal-multiplexes downlink signals for a plurality of user terminals over a given radio resource, a user terminal having received the downlink signals for the plurality of user terminals decodes downlink signal for another user terminal, judges whether or not the downlink signal for the other user terminal has been successfully received, based on the decoding result of the downlink signal, reports a judgement result as to whether or not the downlink signal for the other user terminal has been successfully received and a judgement result as to whether or not a downlink signal for the user terminal has been successfully received, to the radio base station, and then the radio base station executes retransmission control of downlink signals based on reports from the user terminal.

User terminal, radio base station and radio communication method

A survey of communication/networking in Smart Grids

A method and apparatus for enabling scheduling and control of direct link communication in a cellular communication system may be disclosed. A method for use in a first wireless transmit/receive unit (WTRU) may include transmitting a request for device-to-device (D2D) communication resources to an enhanced Node B (eNB). The first WTRU may receive an allocation of resources for multiple transmission time intervals (TTI) to be used for D2D communications from the eNB. The first WTRU may schedule D2D communications with a second WTRU to be performed during the allocated resources. The first WTRU may perform D2D communications with the second WTRU using half duplex communications during the allocated resources.

Methods to enable scheduling and control of direct link communication in cellular communication systems

A method and apparatus for transmitting uplink control information (UCI) for Long Term Evolution-Advanced (LTE-A) using carrier aggregation is disclosed. Methods for UCI transmission in the uplink control channel, uplink shared channel or uplink data channel are disclosed. The methods include transmitting channel quality indicators (CQI), precoding matrix indicators (PMI), rank indicators (RI), hybrid automatic repeat request (HARQ) acknowledgement/non-acknowledgement (ACK/NACK), channel status reports (CQI/PMI/RI), source routing (SR) and sounding reference signals (SRS). In addition, methods for providing flexible configuration in signaling UCI, efficient resource utilization, and support for high volume UCI overhead in LTE-A are disclosed.

Uplink control information transmission methods for carrier aggregation

According to the present invention, there are provided a base station device, a terminal device, a communication method, and an integrated circuit capable of performing communication more efficiently when the terminal device transmits an uplink signal based on scheduling by the base station device. The terminal device includes a setting unit that sets a first uplink-downlink configuration, a second uplink-downlink configuration, and a third uplink-downlink configuration, a reception unit that monitors a physical downlink control channel accompanied with a downlink control information format which is used to schedule a physical downlink shared channel in a downlink subframe based on the third uplink-downlink configuration and includes information making a request for transmitting a sounding reference signal, and a transmission unit that transmits or drops the sounding reference signal and transmit an HARQ-ACK for transmission with the physical downlink shared channel.

Terminal device, base station device, communication method, and integrated circuit

A user equipment (UE) is described. The UE includes a higher layer processor configured to receive an RRC message for enhanced resource element group (EREG) configuration. The UE also includes a physical downlink control channel receiver configured to monitor an enhanced physical downlink control channel (EPDCCH) on the basis of a first EREG structure if the EREG configuration is not established, and to monitor the EPDCCH on the basis of a second EREG structure if the EREG configuration is established. All resource elements (REs) with number i in a physical resource block (PRB) pair comprise EREG number i.

User equipments, base stations and methods

A user equipment (UE) is described. The UE determines that dual-connectivity is configured with more than one cell group. The UE also determines if a total scheduled transmission power of the cell groups exceeds a maximum allowed transmission power of the UE. The UE further determines a priority of uplink control information (UCI) types and channel types among the cell groups. The UE additionally determines if UCI is carried on a physical uplink shared channel (PUSCH) transmission for a cell group. The UE also determines if total transmission power of all cell groups with UCI-only transmissions exceeds the maximum allowed transmission power of the UE. The UE transmits UCI and channels on the cell groups.

Systems and methods for dual-connectivity operation

An evolved Node B (eNB) for sending feedback information is described. The eNB includes a processor and instructions stored in memory that is in electronic communication with the processor. The eNB determines configuration parameters related to an Enhanced Physical Hybrid-Automatic Repeat reQuest (ARQ) Indicator Channel (EPHICH). The eNB also sends an uplink grant and an associated EPHICH resource indicator based on the configuration parameters. The eNB additionally receives data in a Physical Uplink Shared Channel (PUSCH). The eNB further sends Hybrid Automatic Repeat Request Acknowledgement/Negative Acknowledgement (HARQ-ACK) information based on the configuration parameters.

Devices for sending and receiving feedback information

A User Equipment (UE) for reconfiguring uplink and downlink (UL-DL) allocations is described. The UE includes a processor and instructions stored in memory that is in electronic communication with the processor. The UE determines whether at least one subframe is convertible over a default Time Domain Duplexing (TDD) UL-DL configuration. If at least one subframe is convertible, then the UE determines a first reference UL-DL configuration and a second reference UL-DL configuration. The UE also sends any hybrid automatic repeat request acknowledgement (HARQ-ACK) information corresponding to a Physical Downlink Shared Channel (PDSCH) based on the first reference configuration. The UE further determines a Physical Uplink Shared Channel (PUSCH) schedule based on the second reference UL-DL configuration. The UE additionally receives any hybrid automatic repeat request acknowledgement (HARQ-ACK) information corresponding to a Physical Uplink Shared Channel (PUSCH) based on the second reference UL-DL configuration.

Devices for reconfiguring uplink and downlink allocations

An evolved Node B (eNB) for allocating resources for a device-to-device (D2D) link between User Equipments (UEs) is described. The eNB includes a processor and instructions stored in memory that is in electronic communication with the processor. The eNB allocates resources for a D2D link by using at least one Physical Downlink Control Channel (PDCCH). The eNB further indicates a D2D link direction.

Zhanping Yin

Papers

User equipments, base stations and methods

Systems and methods for dual-connectivity operation

Devices for sending and receiving feedback information

Devices for reconfiguring uplink and downlink allocations

Allocating and determining resources for a device-to-device link