摘要:
A wireless communication device according to the invention includes a reception section that receives a downlink signal in a first subframe from another wireless communication device; an ACK/NACK generation section that generates ACK/NACK which indicates an error determination result of the received downlink signal; a determination section that determines, when an uplink signal directed to the other wireless communication device is not allocated in a second subframe, whether a different uplink signal is allocated in a third subframe subsequent to the first subframe by a predetermined number of subframes and previous to the second subframe; a multiplexing section that multiplexes the ACK/NACK to the different uplink signal in the third subframe when the determination section determines that the different uplink signal is allocated in the third subframe; and a transmission section that transmits the different uplink signal in which the ACK/NACK is multiplexed by the multiplexing section.
摘要:
Disclosed are a terminal apparatus and a response signal transmitting method that can reduce the signaling overheads related to a bundling group in a communication system to which a partial bundling is applied. In a terminal (200), a bundling control unit (212), which serves as a generating means for generating a response signal, generates, based on a bundling rule according to which bundling groups are associated with downstream unit bands constituting unit band groups, a bundle of ACK/NACK signals obtained by bundling the error detection results of active downstream unit bands included in the same bundling group, out of active downstream unit band groups constituted by active downstream unit bands.
摘要:
A base station (100) transmits a DL grant for a terminal (200) by mapping it to an R-PDCCH region, thus transmitting a series of data groups to the terminal (200) by the SPS method. A transmission control unit (102) sets in the R-PDCCH region a control resource region which maps a data resource and the DL grant in a resource block group common in frames to be transmitted by the SPS method.A resource region which was defined as a control resource region in a first frame to be transmitted among a plurality of frames to be transmitted is defined as a data resource in a second or subsequent frame to be transmitted.
摘要:
A base station device causing no decrease in system throughput and guaranteeing the reception quality at a terminal when a DCI directed toward the terminal is mapped to a PDCCH region and an R-PDCCH region. A search space setting unit (103) sets a search space having a plurality of allocation candidates, in both regions. An allocation unit (106) allocates control information to a resource in one allocation candidate in the search space. The ratio of the number of allocation candidates in the R-PDCCH region to the number of allocation candidates in the PDCCH region in the search space for a terminal using DM-RS in the R-PDCCH region is equal to or greater than the ratio of the number of allocation candidates in the R-PDCCH region to the number of allocation candidates in the PDCCH region in the search space for a terminal using CRS in the R-PDCCH region.
摘要:
To improve the channel estimation accuracy of “DL grant” that instructs data allocation of a downlink of R-PDCCH. A wireless communication apparatus according to an aspect of the invention includes a receiver that is configured to receive a control signal, and a blind decoder that is configured to perform a blind decoding of a plurality of adjacent physical, resource blocks (PRBs) in which the same preceding is used in a unit of an RB group (RBG) that is composed of the plurality of PRBs, and to detect a resource area to which a control signal for the wireless communication apparatus that is included in the control signal is allocated.
摘要:
The invention provides a base station that does not cause the number of blind decodings to be increased and further can prevent the flexibility of resource allocation from degrading. A search space setting unit (103) sets search spaces each of which is constituted by one or more control channel elements (CCEs) and each of which is to be decoded in the terminals and each of which is defined by a plurality of to-be-decoded candidates. An allocating unit (108) places, in one of the plurality of to-be-decoded candidates included in the search space, a control channel. The number of connections of CCEs constituting the to-be-decoded candidate is associated with the number of to-be-decoded candidates. The search space setting unit (103) causes, in accordance with the control channel to be transmitted, the association of the number of connections of CCEs constituting the to-be-decoded candidate with the number of to-be-decoded candidates to differ.
摘要:
This base station is capable of suppressing degradation of data throughput even when a DCI for a terminal connected to the base station is transmitted via an R-PDCCH region. In this base station, a PDCCH generation unit (104) generates control information transmitted via a first control channel that is mapped to the same resource region as a resource region to which data for the terminal (200) is allocated, or control information transmitted via a second control channel that is mapped to a resource region that differs from the abovementioned resource region. A transmission RF unit (112) transmits the generated control information. Here, the amount of control information in the first control channel is less than the amount of control information in the second control channel.
摘要:
Provided is a radio communication terminal which is capable of measuring quality in communication with a handover destination with high accuracy. The radio communication terminal is capable of communicating with a base station or a relay node, and includes: a receiver which receives control information including information relating to measurement of measuring quality of a neighbor cell; an extractor which extracts information on a subframe where the measurement should be performed, which is a subframe where only transmission of a signal from the relay node connected to the base station is performed, from the information relating to the measurement; a measurement section which performs the measurement, on a subframe basis, based on the extracted information on the subframe where the measurement should be performed: and a transmitter which transmits a result, of the measurement to the base station or the relay node.
摘要:
A base station apparatus and terminal apparatus with a configuration which achieves highly flexible retransmission control while preventing increases in the uplink control channel overhead. In the base station (100), a control unit (101) configures a bundling unit band group including first and second downlink unit bands, and a mapping unit (108) maps initial transmission data to the first and second downlink unit bands as well as maps retransmission data to a third downlink unit band excluding the downlink unit bands of the bundling unit band group. Further, in the terminal (200), a bundling control unit (212) transmits a response signal for the initial transmission data with the constituent resources of an uplink control channel provided in an uplink unit band and linked to the downlink control channels of the downlink unit bands used to transmit the initial transmission data, and transmits a response signal for the retransmission data using resources different from that of the response signal for the initial transmission data.
摘要:
Disclosed is a CCE+ number allocation method which reduces the ACK/NACK (Acknowledgment/Negative Acknowledgment) collision probability in a mixed system containing an LTE (Long Term Evolution) system and an LTE+ (Long Term Evolution Advanced) system. A CCE (Control Channel Element)+ number is defined by selecting a number from CCE numbers of the CCE to contain PDCCH (Physical Downlink Control Channel) allocated in a resource element region constituting CCE+ where PDCCH+ is arranged. This can prevent overlapped selection of the CCE number and the CCE+ number even when the PDCCH and the PDCCH+ are simultaneously transmitted. Thus, it is possible to reduce the collision probability of ACK/NACK correlated to the CCE number and the CCE+ number.