摘要:
A radio transmitter of the present invention includes a scheduler for assigning a communication time or a communication frequency to each radio receiver based on quality information of a received signal transmitted by the radio receiver, a transmission circuit controller for transmitting either a frequency diversity region or a multiuser diversity region to be selected with respect to each chunk, and a transmission circuit for applying different delay times to signals of a plurality of transmission antennas based on a transmission result of the transmission circuit controller.
摘要:
A wireless transmitter of the present invention includes n (n being an integer of 2 or more) transmission antennas, a transmission circuit controller that, based on reception qualities reported from terminals, assigns a chunk to each terminal, and sends a phase-control report signal that determines whether to perform phase-control, to that chunk, and a transmission circuit unit that, to each of the n transmission antennas, performs phase-control based on the phase-control report signal, and applies a delay that obtains an optimum transmission diversity effect among a plurality of transmission diversity effects.
摘要:
An rf signal transmitter for transmitting rf signals through a plurality of antennas is described, which comprises: a transmit section adapted to selectively set, with respect to an input signal, the initial phase of an output to at least one of said antennas depending on a time or frequency region used for communication and to provide delay to the output on an antenna-by-antenna basis and on the basis of a transmission timing or a transmission frequency; and a quality information receive section for receiving quality information from destination station, i.e., a wireless terminal unit, said quality information concerning the rf signal transmitted from said transmit section and received at said destination station.
摘要:
A method for detecting a specific timing from a synchronization channel is described. A signal with a known sequence is received. Two or more correlation values between the received signal and the known sequence are calculated at two or more positions. The two or more correlation values are compared. A determination is made whether the position of the known sequence has been shifted based on the comparison. A specific timing of a synchronization channel is detected based on the determination.
摘要:
A base station is capable of efficiently notifying a terminal of control information. The base station communicates with the terminal using a sub-frame including a plurality of resource block pairs. The base station sets a second control channel region in the terminal through RRC signaling that is higher-layer control information, the second control channel region being a region set differently from a first control channel region in which a first control channel is to be arranged. The base station transmits control information for the terminal by mapping the control information to a second control channel that is to be arranged in the second control channel region. The first control channel region is set in the sub-frame to be specific to the base station, and the second control channel region is set in the sub-frame to be specific to the terminal in units of the resource block pairs.
摘要:
In a communication system in which a base station apparatus and a terminal apparatus communicate with each other, a base station apparatus, a terminal apparatus, and a communication system with which the base station apparatus and the terminal apparatus can efficiently communicate with each other are provided. The terminal apparatus that communicates with the base station apparatus includes a radio resource control section 6011 that configures a plurality of uplink physical channels and that configures an uplink power control-related parameter for each of the plurality of uplink physical channels in accordance with information included in a radio resource control (RRC) signal and a transmission power control section 6015 that sets transmission power of the uplink physical channels on the basis of the uplink power control-related parameters.
摘要:
A terminal that performs a reference signal received power (RSRP) measurement of a channel-state information reference signal, on the basis of a second measurement target configuration in a case where the second measurement target configuration is contained in a measurement object configuration, where the second measurement target configuration containing at least a first index. In addition, the terminal transmits a first measurement result with a second index, where the first measurement result includes a reference signal received power of a channel-state information reference signal based on the second measurement target configuration.
摘要:
A base-station apparatus configures a terminal apparatus with information related to mapping between a first channel-state information reference signal and a second channel-state information reference signal and codebook subset restriction information that restricts selection of a codebook subset as feedback information by the terminal apparatus, the codebook subset indicating precoding a weight to perform a first communication and a second communication. Using the information related to the mapping and the codebook subset restriction information, the terminal apparatus selects a codebook to perform the first communication and a codebook to perform the second communication. The terminal apparatus configures the base-station apparatus with information indicating the codebook to perform the first communication and information indicating the codebook to perform the second communication.
摘要:
A terminal communicating with a base station includes: a switching partswitching between a first feedback mode in which one precoder information specifying a preferred precoder and a reception quality indicator specifying a preferred transmission rate are reported periodically and a second feedback mode in which first partial precoder information among first and second partial precoder information specifying the preferred precoder and a set of the second partial precoder information and the reception quality indicator are reported periodically. A report part uses, in the second feedback mode, a periodic resource for reporting the precoder information and reception quality indicator in the first feedback mode, reporting one of the first partial precoder information and the set of the second partial precoder information and the reception quality indicator alternately and in a period two times a report period of the precoder information and reception quality indicator in the first feedback mode.
摘要:
It is possible to efficiently transmit and receive signals including control information between a base station apparatus and a mobile station apparatus. A control channel is constituted of one or more first elements. The mobile station apparatus sets a search space for performing decoding detection of the control channel within a control channel region in which each of the first elements is constituted of resources in one physical resource block, and a search space for performing decoding detection of the control channel within a control channel region in which each of the first elements is constituted of second elements in a plurality of different physical resource blocks. Each of the second elements is resources obtained by dividing one physical resource block. The mobile station apparatus performs decoding detection of the control channel using the first elements in the set search spaces.