Patent application number | Description | Published |
20080305740 | Wireless Communication Apparatus, Wireless Communication Method and Wireless Communication System - The objective of the present invention is to suppress an increase in the power consumption for the relaying of signals. A relay station unit | 12-11-2008 |
20090011702 | WIRELESS TRANSMISSION APPARATUS AND WIRELESS TRANSMISSION METHOD - A wireless transmission apparatus capable of suppressing a reduction in coverage area of a base station apparatus and improving the transmission rate in the coverage area. According to this apparatus, a mobile station ( | 01-08-2009 |
20090017814 | RADIO COMMUNICATION METHOD, RELAY STATION DEVICE, AND RADIO RECEIVER DEVICE - Provided is a radio communication method or the like for making compatible an improvement in error rate characteristics and a reduction in delay. The radio communication method is used in a mobile communication system ( | 01-15-2009 |
20090036051 | RADIO COMMUNICATION APPARATUS AND RELAY TRANSMISSION METHOD - Provided is a relay transmission method capable of obtaining the diversity effect even when a relay station has detected an error in a relay signal when performing communication between a base station and a mobile station via a relay station. In the relay station used in this method, a decoding unit ( | 02-05-2009 |
20090047898 | COMMUNICATION SYSTEM, COMMUNICATION RELAY APPARATUS, AND COMMUNICATION RELAY METHOD - A communication relay method and others are disclosed in which even when the channel quality varies, the communication data from MS can be relayed without degrading the throughput of the communication system. In this method, the channel quality between RS and BS is estimated (ST | 02-19-2009 |
20090061767 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A wireless communication method capable of selecting an optimum relay station, while preventing degradation of the throughput. According to this wireless communication method, in a frame | 03-05-2009 |
20090061920 | MOBILE STATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A mobile station wherein the power consumption can be suppressed. In a frame | 03-05-2009 |
20090083605 | RADIO COMMUNICATION APPARATUS - A radio communication apparatus of the present invention aims at improving an error rate characteristic in the end receiver. A repeater (radio relay device) RS | 03-26-2009 |
20090092072 | COMMUNICATION RELAY APPARATUS AND COMMUNICATION RELAY METHOD - A communication relay apparatus wherein the error rate characteristic of a relay destination is improved to raise the throughput, while reducing the given interference power to prevent the reduction of the throughput of the whole communication system. In the apparatus, a signal addressed to a base station is received (ST | 04-09-2009 |
20090130975 | RADIO COMMUNICATION APPARATUS AND RADIO COMMUNICATION METHOD - Provided is a mobile communication system capable of obtaining a diversity effect even when a signal received by a relay station has an error in a corporate relay to which time space encoding is applied. In this mobile communication system, when S | 05-21-2009 |
20090150738 | DATA COMMUNICATION APPARATUS, DATA RECEIVING APPARATUS, DATA TRANSMITTING APPARATUS, AND RETRANSMISSION CONTROL METHOD - A data communication apparatus, a data receiving apparatus, a data transmitting apparatus and a retransmission control method wherein the transmission efficiency is improved. The data communication apparatus includes an error rate determining part ( | 06-11-2009 |
20090239542 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A wireless communication method capable of preventing reduction of the throughput. According to this wireless communication method, in a frame ( | 09-24-2009 |
20100014475 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION SYSTEM - The present invention has an object to provide a wireless communication apparatus and a wireless communication method, which are capable of performing overall optimum channel allocation without producing a control delay with respect to a variation of channel qualities between a mobile station and a relay station. | 01-21-2010 |
20100029285 | RELAY STATION IN MOBILE COMMUNICATION SYSTEM AND RELAY TRANSMISSION CHANNEL SETTING METHOD - Provided is a relay station capable of reducing control information required for allocating a relay transmission channel in a mobile communication system. The relay station ( | 02-04-2010 |
20100040119 | WIRELESS COMMUNICATION APPARATUS - An object of the invention is to provide a wireless communication apparatus which can correct error flexibly without wasting consumed resources while maintaining the improvement of reliability resulted from error correction. The wireless communication apparatus (relay station) | 02-18-2010 |
20100041413 | RADIO BASE STATION DEVICE, RADIO TERMINAL DEVICE, AND RADIO COMMUNICATION SYSTEM - It is possible to provide a radio communication system, a radio base station device, and a radio terminal device capable of reducing the power consumption in a radio terminal device without thinning pilot signals used for measuring upstream line quality. In the radio base station device ( | 02-18-2010 |
20100093304 | WIRELESS COMMUNICATION DEVICE AND EMERGENCY SIGNAL TRANSMISSION METHOD - Provided is a wireless communication device which can transmit an emergency signal without deteriorating data transmission efficiency. In the device, a modulating section ( | 04-15-2010 |
20100128622 | RADIO COMMUNICATION METHOD AND RADIO COMMUNICATION APPARATUS - A radio communication method and a radio communication apparatus that allow enhancement of a throughput characteristic and a degree of multiplicity of an MCS without a necessity for a special additional function. A channel quality measurement section | 05-27-2010 |
20100172284 | Mobile Communication System, Radio Communication Relay Station Device, and Relay Transmission Method - Provided is a radio communication relay station device which can improve a line quality measurement accuracy. In the radio communication relation station ( | 07-08-2010 |
20100246559 | RADIO COMMUNICATION BASE STATION APPARATUS AND RADIO COMMUNICATION MOBILE STATION APPARATUS - A radio communication base station device can efficiently obtain a multiuser diversity gain from frequency scheduling while reducing the amount of a reference signal occupying an uplink. In the device, a grouping section ( | 09-30-2010 |
20100246708 | RADIO COMMUNICATION APPARATUS, RADIO COMMUNICATION METHOD, AND RADIO COMMUNICATION SYSTEM - A radio communication apparatus, a radio communication method, and a radio communication system, which are capable of improving receiving reliability of predetermined bits such as bits having a high degree of importance, and the like, are provided. A code length L is decided based on the modulation system and the coding rate being specified, and the bit length of S | 09-30-2010 |
20100278153 | WIRELESS COMMUNICATION APPPARATUS, WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION SYSTEM - The error rate characteristic in a wireless communication apparatus for relaying communications between a mobile station and a base station is improved. For the modulation level of the resource for network coding, the modulation level from a relay station to the mobile station or the modulation level from the relay station to the base station, whichever is lower, is selected and thus the modulation level becomes QPSK. The relay station preferentially assigns S | 11-04-2010 |
20100279603 | RADIO COMMUNICATION APPARATUS AND RELAY TRANSMISSION METHOD - A relay transmission method for communication between a base station and a mobile station via a relay station while producing a diversity effect even if the relay station detects an error in the relay signal. A decoding section ( | 11-04-2010 |
20100284448 | WIRELESS COMMUNICATION APPARATUS - An object of the invention is to provide a wireless communication apparatus which can correct error flexibly without wasting consumed resources while maintaining the improvement of reliability resulted from error correction. The wireless communication apparatus (relay station) | 11-11-2010 |
20100285808 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION SYSTEM - The present invention has an object to provide a wireless communication apparatus and a wireless communication method, which are capable of measuring line qualities as to a plurality of channels in a high efficiency without giving an adverse influence to communications made by other mobile stations in such a case that a mobile station is communicated with a base station via a relay station. | 11-11-2010 |
20100302996 | WIRELESS TRANSMITTING APPARATUS AND WIRELESS TRANSMITTING METHOD - There are provided a wireless transmitting apparatus and a wireless transmission method that enable reduction of transmission delay of a system by enhancing receiving performance achieved during transmission of network-coded data. A decoding section | 12-02-2010 |
20100315956 | RADIO COMMUNICATION RELAY DEVICE, RADIO COMMUNICATION BASE STATION DEVICE, RADIO COMMUNICATION SYSTEM, AND RADIO COMMUNICATION METHOD - It is possible to provide a radio communication relay device, a radio communication base station device, a radio communication system, and a radio communication method which can effectively use resources and suppress a data delay and system complexity. When a terminal starts an upstream communication with a base station via a repeater in ST | 12-16-2010 |
20100322136 | WIRELESS COMMUNICATION BASE STATION DEVICE, WIRELESS COMMUNICATION RELAY DEVICE, WIRELESS COMMUNICATION TERMINAL DEVICE, PACKET RETRANSMISSION METHOD, AND WIRELESS COMMUNICATION SYSTEM - A wireless communication base station device capable of improving the reception quality of the MBMS data of UE without wasting wireless resources even if an error occurs in the MBMS data transmitted from an eNB when distributing the MBMS via a wireless access network composed of the eNB and an RS. In the device, a wireless quality determining section ( | 12-23-2010 |
20110009052 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION METHOD, AND WIRELESS COMMUNICATION SYSTEM - There are provided a wireless communication apparatus, a wireless communication method, and a wireless communication system capable of selectively utilizing the advantages of both centralized control and distributed control while a time needed for cell searching is suppressed. FIG. | 01-13-2011 |
20110085585 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND BUFFER CLEARING METHOD - A wireless communication apparatus wherein the buffer size can be reduced without increasing the overhead of signalings. In this apparatus, a buffer ( | 04-14-2011 |
20110090832 | MOBILE STATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A mobile station wherein the power consumption can be suppressed. In a frame | 04-21-2011 |
20110092154 | RADIO COMMUNICATION DEVICE - Disclosed is a radio communication device capable of using a resource in which the signal cannot be received by all relay stations participating in cooperative relay for a cooperative relay. A signal-receivable frequency resource determination unit | 04-21-2011 |
20110103297 | WIRELESS COMMUNICATION APPARATUS - A repeater capable of improving the data decoding performance at a base station while achieving sharing of processing for data exchange between repeaters and initial data transmission to the base station (eNB) is provided. A repeater | 05-05-2011 |
20110111693 | RADIO COMMUNICATION BASE STATION DEVICE, RADIO COMMUNICATION RELAY STATION DEVICE, RADIO COMMUNICATION TERMINAL DEVICE, RADIO COMMUNICATION SYSTEM, AND RADIO COMMUNICATION METHOD - It is possible to provide a radio communication base station device, a radio communication relay station device, a radio communication terminal device, a radio communication system, and a radio communication method which can minimize a delay and effectively use resources. When a terminal starts an uplink communication with a base station via a repeater, [ST | 05-12-2011 |
20110134870 | FREQUENCY BAND ALLOCATION METHOD AND TRANSMISSION DEVICE - Disclosed is a frequency band allocation method which reduces PAPR (peak to average power ratio) when performing a single carrier transmission in the uplink line of an LTE+ (LTE Advanced) system in a system using both of an LTE (Long Term Evolution) system and the LTE+ system. In the frequency band allocation method, a UL band for the LTE is arranged adjacently in a lower frequency band than the UL band for the LTE+. With this arrangement, it is possible to prevent division of the band for the LTE+by the uplink line control channel (such as PUCCH) transmitted by an LTE mobile station and to allocate a wide band continuously with the LTE+ mobile station. Especially when the LTE+ mobile station performs a single carrier transmission with the uplink line, the PAPR can be reduced since it is possible to allocate a band continuous with the single carrier signal. | 06-09-2011 |
20110165835 | RADIO COMMUNICATION METHOD, RELAY STATION DEVICE, AND RADIO RECEIVER DEVICE - Provided is a radio communication method or the like for making compatible an improvement in error rate characteristics and a reduction in delay. The radio communication method is used in a mobile communication system including a mobile station, a relay station and a base station. A transmitted signal containing a signal addressed to the base station is transmitted at first from the mobile station to the relay station. A non-reproduced relay signal obtained in the relay station from the transmitted signal is transmitted from the relay station to the base station. On the basis of the reception result of the non-reproduced relay signal at the base station, a re-transmission request of the transmitted signal is transmitted from the base station. A reproduced relay signal, as obtained from the transmitted signal in the relay station, is transmitted from the relay station to the base station in accordance with the re-transmission request transmitted from the base station. | 07-07-2011 |
20110167312 | RADIO TRANSMISSION DEVICE AND RADIO TRANSMISSION METHOD - Provided are a radio transmission device and a radio transmission method which can reduce the transmission packet collision generation ratio even when no resource allocation signal is detected in retransmission. When control information outputted from a decoding unit ( | 07-07-2011 |
20110167326 | RELAY APPARATUS AND WIRELESS COMMUNICATION SYSTEM - A relay station and a wireless communication system wherein novel retransmission control is achieved in cases when a TTI-bundling technique and a relay technique are used in communication between a terminal and a base station. A relay station ( | 07-07-2011 |
20110170425 | RADIO COMMUNICATION DEVICE AND RADIO COMMUNICATION SYSTEM - Disclosed is a radio communication device capable of improving the usage efficiency of resources in multi-stage relay to reduce the amount of delay of a relay signal and improving the reception quality of signals by a relay station or a base station. A transmission determining unit | 07-14-2011 |
20110173519 | WIRELESS COMMUNICATION APPARATUS AND ERROR DETECTION RESULT FEEDBACK METHOD - A wireless communication apparatus and an error detection result feedback method wherein unnecessary retransmissions are avoided to improve the system throughput. At a base station ( | 07-14-2011 |
20110176474 | WIRELESS RELAY STATION APPARATUS - A wireless relay station apparatus for enabling a mobile station and a base station to reliably receive network coding data and to provide sufficient reception performance is provided. (1) A repeater divides data X received from a mobile station into important data and non-important data and divides data Y received from eNB into important data and non-important data. Next, (2) the repeater places the data so that important data Sx for the mobile station and important data Sy for the eNB do not overlap, XORs (exclusive ORs) them, and generates network coding data X (X) Y. (3) The repeater applies downlink propagation inverse characteristic H | 07-21-2011 |
20110177833 | CCE + NUMBER ALLOCATION METHOD AND BASE STATION DEVICE - 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. | 07-21-2011 |
20110206030 | RADIO COMMUNICATION DEVICE AND RADIO COMMUNICATION METHOD - The present invention makes it possible to obtain the transmission diversity effect by applying a CDD while reducing the inter-code interference when performing a code multiplexing. When an Ack/Nack signal is transmitted from a user terminal to a base station in an upstream control channel by using an Ack/Nack resource, the signal is code-multiplexed by using a code sequence containing an orthogonal sequence and a cyclic-shifted sequence and transmitted from a plurality of user terminals to the base station. Upon using an aggregation size indicating the number of control signals of the downstream control channel, if the aggregation size is greater than one, it is determined that no resource located at the right of the axis of the cyclic-shifted amount of the cyclic-shifted sequence in the same orthogonal code of the orthogonal sequence is used, and the Ack/Nack signal to which CDD is applied from a plurality of antennas is transmitted by using a resource ACK # | 08-25-2011 |
20110280177 | BASE STATION APPARATUS AND TRANSMISSION METHOD - A transmission method in time-division relay, using a common transmission format to transmit a control signal for each relay station apparatus; and a base station apparatus of the same. A base station apparatus maps the control signal for relay station apparatuses in the (D+1)th OFDM symbol inside a subframe, wherein D is the maximum number of OFDM symbols in which control signals for mobile station apparatuses are mapped, said control signals being transmitted from the base station apparatus to mobile station apparatuses under the control of the base station apparatus. | 11-17-2011 |
20120021754 | RADIO COMMUNICATION DEVICE AND BANDWIDTH DETERMINATION METHOD - Disclosed is a radio communication device that, even when a terminal erroneously receives a retransmission grant or a response signal from a base station, can reduce the number of other terminals in which the terminal interferes at a retransmission. In this device, a determination unit ( | 01-26-2012 |
20120026892 | BASE STATION APPARATUS AND TERMINAL APPARATUS - 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 ( | 02-02-2012 |
20120063343 | WIRELESS COMMUNICATION TERMINAL AND COMMUNICATION METHOD - To measure the channel quality of the own cell accurately in a condition where there is no interference from a neighbor cell. A wireless communication terminal according to the invention is a wireless communication terminal to be connected to a base station for transmitting and receiving data to/from the base station, the wireless communication terminal including: a receiver that receives a signal which includes control information provided for measuring a channel quality of own cell from the base station; an extractor that extracts the control information from the signal received by the receiver; a measurement section that measures, on the basis of the control information, the channel quality of the own cell in a domain where a neighbor cell does not transmit a signal; and a transmitter that transmits a measurement result of the channel quality of the own cell measured by the measurement section, to the base station. | 03-15-2012 |
20120082085 | WIRELESS COMMUNICATION RELAY STATION APPARATUS, WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION RELAY METHOD, AND WIRELESS COMMUNICATION METHOD - The present invention provides a wireless communication relay station apparatus, a wireless communication apparatus, a wireless communication relay method and a wireless communication method which are capable of effectively utilizing resources and preventing loop interference. A wireless communication relay station apparatus according to the present invention is a wireless communication relay station apparatus for relaying communication between a first wireless communication apparatus and a second wireless communication apparatus in at least two or more frequency bands, the wireless communication relay station apparatus including: a transmitter for, using a first subframe, transmitting a first uplink signal to the first wireless communication apparatus in a first frequency band, and transmitting a first downlink signal to the second wireless communication apparatus in a second frequency band; and a receiver for, using a second subframe, receiving a second downlink signal from the first wireless communication apparatus in the first frequency band, and receiving a second uplink signal from the second wireless communication apparatus in the second frequency band. | 04-05-2012 |
20120093064 | WIRELESS COMMUNICATION RELAY STATION APPARATUS, WIRELESS COMMUNICATION BASE STATION APPARATUS, WIRELESS COMMUNICATION MOBILE STATION - There is provided a wireless communication relay station apparatus and a wireless communication base station apparatus capable of allocating resources dynamically to each apparatus in accordance with traffic. A wireless communication relay station apparatus according to the invention includes a receiver that receives data from the wireless communication base station apparatus or the wireless communication mobile station apparatus, and a selector that selects data, within an uplink subframe or a downlink subframe, from: first data to be relayed from the own apparatus to the wireless communication base station apparatus; second data to be relayed from the own apparatus to the wireless communication mobile station apparatus; third data to be relayed from the wireless communication base station apparatus to the own apparatus; and fourth data to be relayed from the wireless communication mobile station apparatus to the own apparatus. The receiver receives allocation information for switching transmission/reception in the own apparatus from the wireless communication mobile station apparatus within an uplink subframe or a downlink subframe. The selector switches the first data and the fourth data within the uplink subframe in accordance with the allocation information received by the receiver, or the selector switches the second data and the third data within the downlink subframe in accordance with the allocation information received by the receiver. | 04-19-2012 |
20120099462 | RADIO COMMUNICATION TERMINAL AND RADIO COMMUNICATION METHOD - 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. | 04-26-2012 |
20120108164 | RELAY STATION APPARATUS AND RELAY METHOD - To prevent relaying wrong information by determining whether a radio signal is to be relayed in accordance with a function of error detection in the radio signal. A relay station apparatus according to an aspect of the invention is a relay station apparatus which relays a radio signal between a transmission station and a reception station, including: a receiver which is configured to receive the radio signal from the transmission station; and a relay determination section which is configured, in accordance with a function of error detection in the radio signal received by the receiver, to determine whether the signal is to be relayed or not, based on a first channel quality indicating a channel quality from the transmission station to the relay station apparatus. | 05-03-2012 |
20120113912 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - Disclosed is a wireless communication apparatus and wireless communication method wherein flexible frequency scheduling is performed without increasing the scale of the DFT (Discrete Fourier Transform) circuitry. For example, when resource allocation information is reported indicating whether or not a resource has been allocated to each of a plurality of RBGs (RB groups) into which the system bandwidth is divided, as in Type 0 allocation, if the number of reported RBs reported by the resource allocation information cannot be expressed as “2̂n×3̂m×5̂l”, an allocated RB number setting section ( | 05-10-2012 |
20120120867 | WIRELESS COMMUNICATION DEVICE, SIGNAL RELAY METHOD, AND SIGNAL ALLOCATION METHOD - To flexibly change subframes of a backhaul link and an access link. A wireless communication device according to the present invention is for relaying a signal between a base station and a mobile station, including: a receiver that receives the signal from the base station or the mobile station; a transmitter that transmits the signal to the base station or the mobile station; and a changeover unit that switches an operation mode to a receiving mode for receiving the signal from the base station or the mobile station, or a transmitting mode for transmitting the signal to the base station or the mobile station, wherein the changeover unit switches from the transmitting mode to the receiving mode in a subframe set to an MBSFN subframe by the wireless communication device among subframes subsequent to a subframe in which a NACK for requiring retransmission by the base station is transmitted. | 05-17-2012 |
20120134333 | TERMINAL DEVICE AND RETRANSMISSION CONTROL METHOD - Provided are a terminal device and a retransmission control method by which, when carrier aggregation communication using a plurality of downlink unit bands is applied, the quality of downlink data transmitted by each downlink unit band can be maintained, while suppressing the increase in overhead of downlink allocation control information. In a terminal ( | 05-31-2012 |
20120176961 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - To effectively use transmission power by changing the arrangement of unused REGs. A wireless communication apparatus according to the invention corresponds to a wireless communication apparatus for performing wireless communication with a terminal equipment via a relay station, which includes an allocator which allocates CCEs in which control signals for the relay station are arranged to a plurality of REGs so that unused REGs not allocated with the CCEs differ among respective resource blocks each having the plurality of REGs, and a transmitter which transmits the control signals arranged in the CCEs allocated to the REGs to the relay station in accordance with an allocation by the allocation section. | 07-12-2012 |
20120182858 | TERMINAL DEVICE AND RETRANSMISSION CONTROL METHOD - Provided are a terminal device and a retransmission control method that make it possible to minimize increases in overhead in an uplink control channel (PUCCH), even if channel selection is used as the method to transmit response signals during carrier-aggregation communication using a plurality of downlink unit bands. On the basis of the generation status of uplink data and error-detection results obtained by a CRC unit ( | 07-19-2012 |
20120266054 | TERMINAL APPARATUS AND RESPONSE SIGNAL TRANSMITTING METHOD - A terminal apparatus and a response signal transmitting method wherein the system transmission efficiency can be improved by devising a bundling rule. In a terminal ( | 10-18-2012 |
20120302158 | WIRELESS RELAY DEVICE AND WIRELESS RELAY METHOD - A wireless relay device and a wireless relay method are provided which can improve the utilization efficiency of resources. In the wireless relay device for relaying a signal between a base station and a mobile station, if a transmission section transmits an SRS in a subframe immediately previous to the backhaul subframe, an SRS setting section sets a last symbol of an access link subframe as a fake symbol in which the SRS that the mobile station transmits to the wireless relay device is not configured. A reception section receives the signal transmitted from the mobile station to the wireless relay device in a previous symbol of one of the fake symbol, and then a switching section switches to transmission from the wireless relay device to the base station. If the transmission section does not transmit the SRS in the backhaul subframe immediately previous to the backhaul subframe, the reception section receives the signal transmitted from the mobile station to the wireless relay device in the last symbol of the access link subframe, and then the switching section switches to transmission from the wireless relay device to the base station. | 11-29-2012 |
20120320820 | WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD - A wireless communication device which can improve reception quality in a second other wireless communication device is disclosed, including a reception unit which receives a signal from a first other wireless communication device or a second other wireless communication device connected to the wireless communication device and the first other wireless communication device, a transmission power value setting unit which sets a transmission power value in a first subframe, in which the first other wireless communication device transmits a signal to the second other wireless communication device, to be higher than that in a second subframe in which the first other wireless communication device receives a signal from a third other wireless communication device connected to the first other wireless communication device, and a transmission power value switching control unit which performs switching in the first subframe to the transmission power value higher than that in the second subframe. | 12-20-2012 |
20120320854 | CONTROL INFORMATION TRANSMISSION APPARATUS, CONTROL INFORMATION RECEPTION APPARATUS, AND CONTROL INFORMATION TRANSMISSION METHOD - A control information transmission apparatus which can reduce the interference power of the control signal of the terminal connected to the femtocell is provided. The control information transmission apparatus comprises an arrangement unit that arranges some or all of control signals for a terminal in an extension part among resources including a compatible part and the extension part; and a transmission unit that transmits some or all of the arranged control signals for the terminal. | 12-20-2012 |
20130021920 | TERMINAL APPARATUS AND RESPONSE SIGNAL TRANSMITTING METHOD - 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 ( | 01-24-2013 |
20130028098 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - Provided are a wireless communication apparatus and a wireless communication method capable of reducing power consumption without delay of data transmission and reception. The wireless communication apparatus according to the invention includes a reception unit which receives a DRX instruction information destined for the wireless communication apparatus and a monitor process number including a sub-frame number used to monitor a PDCCH destined for the wireless communication apparatus; and a monitoring process unit which monitors the PDCCH destined for the wireless communication apparatus using only sub-frames set based on the sub-frame number, when receiving an instruction to perform a DRX process by the DRX instruction information. | 01-31-2013 |
20130028124 | WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD - 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. | 01-31-2013 |
20130039164 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A wireless communication apparatus of the invention has a determination section that determines which one of a plurality of formats is used for determining transmission symbols to be transmitted to another communication apparatus; a control section that determines a type a sequence length of an orthogonal code and used for assigning ACK/NACK symbols to identical symbols in an identical slot on basis of the format determined by the determination section, without depending on a number of transmission symbols capable of being transmitted to the other communication apparatus; a spreading section that spreads the ACK/NACK symbols by an identical type of orthogonal code in the plurality of formats set based on the type and the sequence length of the orthogonal code determined by the control section; and a transmission section that transmits the spread ACK/NACK symbols using the determined format. | 02-14-2013 |
20130077560 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - 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. | 03-28-2013 |
20130094419 | WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD - The transmission of a reference signal, such as a CSI-RS, is enabled while maintaining a power saving effect when performing inter-cell cooperative transmission/reception or the like in a plurality of cells. In order to realize inter-cell cooperative transmission/reception, a CSI-RS which is used for estimating the state of a spatial propagation path of a communication line is generated by a CSI-RS generation unit, and the CSI-RS is disposed in a predetermined subframe by a disposition unit and transmitted. At this time, when a frame has ten subframes # | 04-18-2013 |
20130100921 | BASE STATION, TERMINAL, SEARCH SPACE SETTING METHOD AND DECODING METHOD - 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 ( | 04-25-2013 |
20130114563 | BASE STATION, TERMINAL, TRANSMISSION METHOD AND RECEPTION METHOD - In the base station ( | 05-09-2013 |
20130114564 | TRANSMITTER APPARATUS, RECEIVER APPARATUS, TRANSMISSION METHOD, AND NOTIFICATION METHOD - This invention relates to a transmitter apparatus, a receiver apparatus, a transmission method and a notification method that, when a switching between MIMO communication and non-MIMO communication is performed, can suppress the increase of an SRS (Sounding Reference Signal) resource, while suppressing the degradation of trackability of temporal variation of a channel. In a terminal ( | 05-09-2013 |
20130121237 | BASE STATION, RELAY STATION, TRANSMISSION METHOD, AND RECEPTION METHOD - The present invention provides a base station whereby efficient resource allocation for data signals is realized. In a base station ( | 05-16-2013 |
20130121295 | BASE STATION DEVICE, TERMINAL DEVICE, TRANSMISSION METHOD, AND RECEPTION METHOD - 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 ( | 05-16-2013 |
20130136095 | BASE STATION, TERMINAL, TRANSMISSION METHOD, AND RECEPTION METHOD - Provided are a base station, whereby the erroneous detection of control information can be reduced, thereby preventing the degradation of the system throughput. A base station ( | 05-30-2013 |
20130148623 | BASE STATION, TERMINAL, TRANSMISSION METHOD, AND RECEPTION METHOD - Provided are a base station, a terminal whereby erroneous detection of control information can be reduced to prevent the degradation of the system throughput. A PDCCH generation unit ( | 06-13-2013 |
20130155990 | BASE STATION AND CONTROL INFORMATION TRANSMISSION METHOD - 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 ( | 06-20-2013 |
20130155996 | TRANSMISSION DEVICE, RECEIVING DEVICE, TRANSMISSION METHOD AND RECEIVING METHOD - A base station ( | 06-20-2013 |
20130163507 | RELAY STATION, BASE STATION AND COMMUNICATION METHOD - Provided is a relay station that is capable of improving PDSCH channel estimation accuracy, even in a case where a DL grant is provided that gives instructions for downlink data allocation for R-PDCCH. In this device, a signal separation unit ( | 06-27-2013 |
20130163573 | TRANSMISSION DEVICE AND TRANSMISSION METHOD - Provided are a transmission device and transmission method that are capable of allowing leeway in data reception processing on the receiving side regardless of the position in time of a resource region to which control information, which is contained in resource allocation information for transmission data, is mapped. A setting unit ( | 06-27-2013 |
20130208645 | CONFIGURATION OF UPLINK AND DOWNLINK GRANT SEARCH SPACES IN AN OFDM-BASED MOBILE COMMUNICATION SYSTEM - The invention relates to methods for detecting at least one of a downlink grant and an uplink grant within a sub-frame of an OFDM-based mobile communication system. The invention provides a reception apparatus (e.g. a relay node or a mobile terminal) that are adapted to perform these methods. The invention defines the uplink grant search space to form a subset of the downlink grant search space. In other words, in the frequency domain, the uplink grant search space is defined on a subset of the resource block pairs that form the downlink search space. This configuration allows downlink data to be mapped to the remaining resources outside the uplink grants search space and the resources used for a downlink grant. Furthermore, the downlink grants comprise an indication of whether the uplink grant search space in the sub-frame comprises (user) data or not. | 08-15-2013 |
20130250901 | TERMINAL DEVICE, BASE STATION DEVICE, TRANSMITTING METHOD AND RECEIVING METHOD - The present invention pertains to a terminal device, which, when ARQ is used for communication that uses an uplink unit band and a plurality of downlink unit bands associated with the uplink unit band, and when a transmission mode that supports up to 2 TB in a PCell is set in the terminal, is capable of reducing the amount of signaling from a base station while eliminating a lack of PUCCH resources when semi-permanent scheduling (SPS) is used in the PCell. A control unit ( | 09-26-2013 |
20130279481 | BASE STATION, TERMINAL, TRANSMISSION METHOD, AND RECEPTION METHOD - A base station, a terminal, a transmission method and a reception method that allow the data processing on a reception side to have a margin irrespective of the time position of a resource region where control information is mapped. In a base station ( | 10-24-2013 |
20130308583 | MOBILE STATION, BASE STATION, TRANSMITTING METHOD AND RECEIVING METHOD - A radio communication base station device can efficiently obtain a multiuser diversity gain from frequency scheduling while reducing the amount of a reference signal occupying an uplink. In the device, a grouping section divides a plurality of RBs (Resource Blocks) into a plurality of RB groups. An RB group control unit performs a control to change the correspondence relationship between the RBs and the RB groups with time. When the grouping section divides the RBs into the RB groups, the RB control unit performs a control to change a combination of the RBs included in each of the RB groups with time. A scheduling section performs a scheduling of allocating each of a plurality of mobile stations to each of the RBs in each of the RB groups according to the reception quality of the reference signal. | 11-21-2013 |
20130315190 | TRANSMISSION DEVICE, RECEPTION DEVICE, TRANSMISSION METHOD, AND RECEPTION METHOD - A transmission device capable of flexibly setting the transmission mode, even in cases when the candidates for the resource domain to be used to transmit a control signal to a terminal include both a first downlink resource domain that can be used as either a control channel or a data channel and a second downlink resource domain that can be used as a control channel, wherein a transmission mode setting unit ( | 11-28-2013 |
20130329684 | TRANSMISSION DEVICE, RECEIVING DEVICE, TRANSMISSION METHOD, AND RECEIVING METHOD - In a base station ( | 12-12-2013 |
20130336201 | RELAY STATION, BASE STATION, TRANSMISSION METHOD AND RECEPTION METHOD - A relay station ( | 12-19-2013 |
20140003326 | RELAY STATION, BASE STATION, TRANSMISSION METHOD, AND RECEPTION METHOD | 01-02-2014 |
20140064205 | SEARCH SPACE FOR UPLINK GRANT IN AN AGGREGATED-CARRIER MOBILE COMMUNICATION SYSTEM - The present invention relates to transmitting and receiving of control information in a system supporting carrier aggregation. A search space for control information is configured in such a way that at least two search spaces determined by respective component carriers are on a first slot of a subframe and a further search space determined by a further component carrier is on a second slot, wherein at least one candidate of search spaces in the first slot is mapped in a same resource block pair with at least one candidate of a search space in the second slot. | 03-06-2014 |
20140071911 | TRANSMITTING DEVICE, RECEIVING DEVICE, TRANSMITTING METHOD, AND RECEIVING METHOD - In a transmitting device, each of the plurality of mapping candidates that make up the search space is configured from the same number of control channel elements as an aggregation level value, the control channel elements are obtained by dividing each physical resource block into a predetermined number, and the quantity of resource elements contained in each of the predetermined number of control channel elements in each physical resource block adopts at least two types of values. A search space setting unit ( | 03-13-2014 |
20140082431 | TERMINAL DEVICE AND RESPONSE SIGNAL SENDING METHOD - Provided is a terminal ( | 03-20-2014 |
20140098775 | TRANSMISSION DEVICE, RECEPTION DEVICE, TRANSMISSION METHOD, AND RECEPTION METHOD - In a base station ( | 04-10-2014 |
20140126506 | TRANSMISSION DEVICE, RECEIVING DEVICE, TRANSMISSION METHOD, AND RECEIVING METHOD - Disclosed is a transmission apparatus capable of properly performing cross carrier scheduling in ePDCCHs. In this apparatus, when communication is performed using a plurality of component carriers (CCs), configuration section | 05-08-2014 |
20140133420 | TERMINAL DEVICE, BASE STATION DEVICE, AND TRANSMISSION/RECEPTION METHOD - In the present invention, even if different UL-DL configurations are set for a plurality of unit bands, notification timing of error detection results for SCell is not dispersed complicatedly, and the processing relating to the error detection results can be simplified. At the reference notification timing of a response signal with respect to downlink data of a second unit band, if a sub-frame of the second unit band is an uplink communication sub-frame and a sub-frame of a first unit band is a downlink communication sub-frame, a control unit ( | 05-15-2014 |
20140133422 | TRANSMITTER DEVICE, RECEIVER DEVICE, TRANSMISSION METHOD, AND RECEPTION METHOD - The objective of the present invention is to provide a transmitter device that is capable of preventing error detection of a data resource area as a result of a detection mistake of a control signal. In the device, a control unit ( | 05-15-2014 |
20140146733 | BASE STATION AND RELATED RADIO COMMUNICATION METHOD - Provided are a terminal device and a retransmission control method that make it possible to minimize increases in overhead in an uplink control channel (PUCCH), even if channel selection is used as the method to transmit response signals during carrier-aggregation communication using a plurality of downlink unit bands. On the basis of the generation status of uplink data and error-detection results obtained by a CRC unit, a control unit in the provided terminal uses response signal transmission rules to control the transmission of response signals or uplink control signals that indicate the generation of uplink data. If an uplink control signal and a response signal are generated simultaneously within the same transmission time unit, the control unit changes the resources allocated to the response signal and/or the phase point of the response signal in accordance with the number and position of ACKs within the error-detection result pattern. | 05-29-2014 |
20140146770 | WIRELESS TRANSMISSION APPARATUS, WIRELESS RECEPTION APPARATUS, AND WIRELESS COMMUNICATION METHOD - To improve the operation and the effect of ICC by appropriately limiting resources of a reference signal. An SRS generating unit ( | 05-29-2014 |
20140164864 | WIRELESS COMMUNICATIONS TERMINAL, BASE STATION DEVICE, AND RESOURCE ALLOCATION METHOD - The purpose of the present invention is to avoid ACK/NACK collision in a system in which E-PDCCH control information is transmitted, increase the utilization efficiency of ACK/NACK resources, and suppress unnecessary PUSCH band reduction. A wireless communications terminal having a configuration comprising: a reception unit that receives control signals including ACK/NACK indexes, via an expanded physical downlink control channel; a control unit that determines, on the basis of the ACK/NACK indexes, whether to use a dynamically allocated dynamic ACK/NACK resource or a specified resource specified beforehand, to send downlink data ACK/NACK signals; and a transmission unit that sends the ACK/NACK signals using the dynamic ACK/NACK resource or the specified resource, as determined. | 06-12-2014 |
20140169201 | WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION TERMINAL, REFERENCE SIGNAL TRANSMISSION CONTROL METHOD, AND REFERENCE SIGNAL PROCESSING METHOD - A wireless communication device transmitting a reference signal with which a wireless communication terminal measures reception power from a communication cell, in a resource of a data region, includes a control section that determines the resource of the data region in which a reference signal specific to the wireless communication terminal is placed, and a wireless transmission section that transmits the reference signal in the resource determined by the control section. Provided is a wireless communication device transmitting a reference signal by which a wireless communication terminal measures reception power from a communication cell. | 06-19-2014 |
20140169205 | RADIO COMMUNICATION TERMINAL AND RADIO COMMUNICATION METHOD - 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. | 06-19-2014 |
20140185562 | TERMINAL AND METHOD FOR RECEIVING CONTROL INFORMATION - A CCE+ number allocation method 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 making it possible to reduce the collision probability of ACK/NACK correlated to the CCE number and the CCE+ number. | 07-03-2014 |
20140185590 | RADIO COMMUNICATION DEVICE AND RADIO COMMUNICATION METHOD - When an Ack/Nack signal is transmitted from a user terminal to a base station in an upstream control channel by using an Ack/Nack resource, the signal is code-multiplexed by using a code sequence containing an orthogonal sequence and a cyclic-shifted sequence and transmitted from a plurality of user terminals to the base station. If an aggregation size indicating the number of control signals of the downstream control channel is greater than one, it is determined that no resource located at the right of the axis of the cyclic-shifted amount of the cyclic-shifted sequence in the same orthogonal code of the orthogonal sequence is used, and the Ack/Nack signal to which CDD is applied from a plurality of antennas is transmitted by using a resource ACK #0 allocated to the own device and an unused resource ACK #1, which have the same orthogonal code, but have different cyclic-shifted amounts. | 07-03-2014 |
20140204893 | COMMUNICATION DEVICE, AND RETRANSMISSION CONTROL METHOD - Provided is a wireless communication device. A PHICH reception unit ( | 07-24-2014 |
20140204897 | BASE STATION DEVICE, TERMINAL DEVICE, RESOURCE ALLOCATION METHOD AND RESPONSE SIGNAL TRANSMISSION METHOD - A base station apparatus is disclosed in which control section ( | 07-24-2014 |
20140211747 | WIRELESS COMMUNICATION TERMINAL, BASE STATION DEVICE, RESOURCE ALLOCATION METHOD - A radio communication terminal that increases the ACK/NACK resource utilization efficiency while preventing ACK/NACK collision, and that causes no unnecessary reduction of the PUSCH band in a system that transmits E-PDCCH control information. The radio communication terminal adopts a configuration including a receiving section that receives a control signal including an ACK/NACK index via an enhanced physical downlink control channel (E-PDCCH) transmitted using one configuration from among one or a plurality of configuration candidates, a control section that selects a resource to be used for an ACK/NACK signal of downlink data from among specified resources specified beforehand based on E-PDCCH configuration information used for transmission or reception of the E-PDCCH and the ACK/NACK index, and a transmitting section that transmits the ACK/NACK signal using the selected specified resource. | 07-31-2014 |
20140233481 | SEARCH SPACE RECONFIGURATION FOR ENHANCED-PDCCH - The present invention relates to rapid search space reconfiguration for E-PDCCH (Enhanced Physical Downlink Control CHannel) in wireless communication system to avoid flashlight interferences from neighbouring cells and to allocate the E-PDCCH on the best physical resource blocks (PRBs) in frequency fluctuation dominated scenarios. To this end, a method for providing low-latency feedback on a reconfiguration attempt of a search space for an Enhanced-PDCCH, and a corresponding apparatus are provided. Specifically, a signalling scheme is provided that supports transmission of both HARQ-ACK for PDCCH based E-PDCCH reconfiguration and HARQ-ACK for PDSCH (Physical Downlink Shared CHannel) on the same uplink subframe, so that an acknowledgment of PDCCH based E-PDCCH reconfiguration information and PDSCH information can be transmitted on the same subframe. | 08-21-2014 |
20140254519 | BASE STATION APPARATUS, TERMINAL APPARATUS, TRANSMISSION METHOD, AND RECEPTION METHOD - Disclosed is a base station apparatus in which a configuration section ( | 09-11-2014 |
20140293867 | RELAY STATION, BASE STATION, AND BAND FREQUENCY ALLOCATION METHOD - A relay station to which network sharing is applied, wherein it is possible to appropriately allocate between multiple operators a shared band frequency shared by the multiple operators, and to improve the frequency use efficiency. In a relay station ( | 10-02-2014 |
20140369437 | RECEIVER DEVICE, TRANSMITTER DEVICE, RECEPTION METHOD, AND TRANSMISSION METHOD - 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 ( | 12-18-2014 |
20150016398 | TERMINAL DEVICE, BASE STATION DEVICE, TRANSMITTING METHOD AND RECEIVING METHOD - The present invention pertains to a terminal device, which, when ARQ is used for communication that uses an uplink unit band and a plurality of downlink unit bands associated with the uplink unit band, and when a transmission mode that supports up to 2 TB in a PCell is set in the terminal, is capable of reducing the amount of signaling from a base station while eliminating a lack of PUCCH resources when semi-permanent scheduling (SPS) is used in the PCell. A control unit in this device selects one value among values obtained by adding 1 to four PUCCH resource indexes, which have been preset for PUCCH resource 1 by the base station, on the basis of values for transmission power control information (TPC command for PUCCH) in a PDCCH, for which notification has been received at the start of SPS. | 01-15-2015 |
20150029971 | WIRELESS COMMUNICATION TERMINAL DEVICE AND CONTROL CHANNEL FORMING METHOD - Provided are a wireless communication terminal device and a control channel forming method with which, in the forming of a control channel for transmitting control information including an ACK/NACK and CSI (channel state information), wasteful use of resources is reduced compared to that in related art. In the case where CSI is transmitted independently, and in the case where CSI and an ACK/NACK are transmitted at the same time, the same format is used to form a control channel. Furthermore, in the case where an ACK/NACK is transmitted independently, another format is used if a component carrier (CC) number is equal to or less than 2, and the same format is used if the CC number is equal to or greater than 3. | 01-29-2015 |
20150043466 | TRANSMISSION DEVICE, RECEIVING DEVICE, TRANSMISSION METHOD, AND RECEIVING METHOD - This invention is a transmission device capable of enhancing the reception characteristics of a terminal when employing transmit diversity using two antenna ports in an ePDCCH. In a base station ( | 02-12-2015 |
20150043497 | COMMUNICATION APPARATUS AND RETRANSMISSION CONTROL METHOD - Provided are a communication apparatus and a method for receiving a response signal transmitted from a terminal configured with one or more downlink component carriers. The communication apparatus includes a transmitting section and a receiving section. The transmitting section is configured to transmit, to the terminal, downlink assignment information indicating one or more resources for downlink data, each of the one or more resources being assigned to one of the one or more downlink component carrier(s), and configured to transmit the downlink data to the terminal. The receiving section is configured to receive one or more response signals for the downlink data, which are transmitted from the terminal. The terminal makes the phase points of the response signals different in accordance with a number of downlink data which has been successively received. | 02-12-2015 |