Patent application number | Description | Published |
20120063398 | WIRELESS COMMUNICATION SYSTEM, WIRELESS TRANSMISSION APPARATUS AND WIRELESS TRANSMISSION METHOD - Even when communication is performed independently in each CC (Component Carrier), the occurrence of an error in communication is prevented. Provided is a wireless communication system in which a wireless transmission apparatus and a wireless reception apparatus communicate with each other using a plurality of system frequency bands, wherein the wireless transmission apparatus performs transmission power control on transmission data in each of the system frequency bands, and furthermore, a maximum transmission power which can be transmitted in each of the system frequency bands can be controlled so as to be different from each other. Priorities are set on each of the system frequency bands, and transmission powers of the system frequency bands are determined in descending order of the priorities. | 03-15-2012 |
20120134441 | WIRELESS COMMUNICATION SYSTEM, BASE STATION APPARATUS, AND MOBILE STATION APPARATUS - By taking into account the power consumption and PH of a mobile station apparatus on an uplink, while communication quality is maintained, the efficiency of power consumption is improved. There are provided a PUSCH reception section | 05-31-2012 |
20120155373 | WIRELESS COMMUNICATION SYSTEM, BASE STATION APPARATUS AND COMMUNICATION METHOD - A wireless communication system includes: a multiple number of mobile station apparatuses that transmit code bits obtained by applying error-correction coding to information bits; a relay station apparatus that receives code bits from the multiple mobile station apparatuses, applies network coding on the code bits and transmits the network-code bits; and a base station apparatus that receives and decodes the code bits and the network-code bits, wherein the base station apparatus, when decoding the received code bits, performs iteration decoding by regarding the received code bits as a serially concatenated code of network coding and error correction coding. Accordingly, decoding is performed by regarding the network code and the error correction code as a serial concatenated code, it is possible to obtain diversity with a simple configuration. | 06-21-2012 |
20120218961 | WIRELESS COMMUNICATION SYSTEM, COMMUNICATION CONTROL APPARATUS, COMMUNICATION TERMINAL APPARATUS, AND CONTROL PROGRAM OF COMMUNICATION CONTROL APPARATUS - To perform control so as to achieve a transmission power that satisfies a desired communication quality by an access method which a mobile station apparatus uses, in consideration of the frequency-selective diversity effect, when switching an access method to the one having a different frequency-selective diversity effect. In a wireless communication system in which a communication control apparatus and a communication terminal apparatus that are able to use a plurality of types of access methods perform wireless communication using any of the access methods, the communication control apparatus, when the necessity of changing the access method arises, determines the access method after change and notifies the communication terminal apparatus of switching the access method before change to the determined access method, and performs the transmission power control in accordance with communication characteristics of the determined access method. | 08-30-2012 |
20120230376 | WIRELESS COMMUNICATION SYSTEM, COMMUNICATION DEVICE, COMMUNICATION METHOD, AND PROGRAM - Provided is a wireless communication system including a first communication device configured to perform spectral shaping on a frequency signal and transmit the signal, and a second communication device configured to receive the signal transmitted by the first communication device, and the second communication device includes: a frequency averaging unit configured to dividing information on transmission power gains in all the discrete frequencies into blocks by a plurality of discrete frequencies, information being necessary for the first communication device to perform the spectral shaping; a quantizing unit configured to quantize representative values of the blocks; and a transmitting unit configured to transmit the quantized signals. | 09-13-2012 |
20120258762 | TRANSMISSION APPARATUS, WIRELESS COMMUNICATION SYSTEM, MOBILE STATION APPARATUS CONTROL PROGRAM, AND BASE STATION APPARATUS CONTROL PROGRAM - A mobile station apparatus includes a plurality of PAs (Power Amplifiers) and a plurality of antennas and transmission performances thereof is to be improved when transmission signals having peak powers different from one another are transmitted through the use of the respective antennas. A transmission apparatus includes a plurality of PAs and a plurality of antennas and transmits a signal having a high peak power, by means of determining a transmission signal to be transmitted through the use of each of the PAs based on the capability of each of the PAs, converting the transmission signal into a frequency signal by time-frequency conversion, dividing the frequency signal into a plurality of clusters, and allocating the clusters to bands non-contiguously. Furthermore, the transmission apparatus transmits a signal having a low peak power by means of allocating the frequency signal to continuous bands. | 10-11-2012 |
20120281644 | TRANSMIT POWER CONTROL METHOD AND TRANSMISSION APPARATUS - In the system of a variable transmission bandwidth, transmit power control for minimizing an impact on a circuit is performed. There is provided a transmit power control method that is applied to a transmission apparatus that transmits data through the use of a different transmission format at each transmission opportunity, in which transmit power is controlled depending on the transmission format before digital/analogue conversion is performed on transmission data, and, based on the transmit power control, the transmit power is controlled on the transmission data that has been subjected for the digital/analogue conversion. In addition, the transmission format specifies a frequency bandwidth used for transmission of the transmission data. | 11-08-2012 |
20120322392 | RADIO TRANSMITTER, BASE STATION APPARATUS, RADIO TRANSMISSION METHOD, CONTROL PROGRAM FOR BASE STATION APPARATUS, AND INTEGRATED CIRCUIT - In using frequency selective precoding to a multicarrier signal, notification is provided with control information. A radio transmitter, divides a frequency signal into a plurality of clusters, arranges each of the divided clusters on a frequency domain and multiplies each of the clusters by a precoding matrix, limits the number of precoding matrices to be selected based on the relationship between a precoding matrix to be multiplied to any of the clusters and a precoding matrix to be multiplied to any of the other clusters. The number of precoding matrices to be selected is limited based on the relationship between a precoding matrix to be multiplied to any one of the clusters and a precoding matrix to be multiplied to another cluster neighboring thereto. The number of precoding matrices to be selected is limited based on frequency correlation between any one of the clusters and another cluster neighboring thereto. | 12-20-2012 |
20120324308 | WIRELESS COMMUNICATION SYSTEM, COMMUNICATION DEVICE, PROGRAM, AND INTEGRATED CIRCUIT - A communication device includes a turbo encoding section including a plurality of component encoders, wherein the plurality of component encoders within the turbo encoding section use different constraint lengths. | 12-20-2012 |
20120327830 | WIRELESS COMMUNICATION SYSTEM, WIRELESS TRANSMISSION DEVICE AND WIRELESS TRANSMISSION METHOD - A wireless communication system includes: wireless transmission devices; and a wireless reception device. Each of the wireless transmission devices is configured to transmit data by transforming a time domain signal into frequency domain signals to obtain first frequency signals, clipping a part of the first frequency signals to generate second frequency signals, and allocating the second frequency signals onto subcarriers. The wireless reception device is configured to demodulate, from signals received, time domain data transmitted. Communication is performed using a clipping rate set for each of the wireless transmission devices, the clipping rate being the number of the second frequency signals divided by the number of the first frequency signals. | 12-27-2012 |
20120328044 | COMMUNICATION APPARATUS, CONTROL PROGRAM FOR THE SAME, AND INTEGRATED CIRCUIT - In a radio communication method non-contiguously using a frequency, notification information is reduced, while suppressing an effect on performance. In a communication apparatus which switches between a communication method contiguously using a frequency and a communication method non-contiguously using the frequency, sets a parameter corresponding to each communication method, and performs radio communication, the communication apparatus sets a same parameter to an entire frequency band in the communication method contiguously using the frequency, while dividing a frequency band into a plurality of frequency bands and setting a different parameter for each divided frequency band in the communication method non-contiguously using the frequency. The communication method contiguously using the frequency and the communication method non-contiguously using the frequency mutually have different PAPR (Peak to Average Power Ratio) characteristics. | 12-27-2012 |
20130017835 | BASE STATION APPARATUS, MOBILE STATION APPARATUS, AND INTEGRATED CIRCUITAANM Takahashi; HirokiAACI Osaka-shiAACO JPAAGP Takahashi; Hiroki Osaka-shi JPAANM Hamaguchi; YasuhiroAACI Osaka-shiAACO JPAAGP Hamaguchi; Yasuhiro Osaka-shi JPAANM Yokomakura; KazunariAACI Osaka-shiAACO JPAAGP Yokomakura; Kazunari Osaka-shi JPAANM Nakamura; OsamuAACI Osaka-shiAACO JPAAGP Nakamura; Osamu Osaka-shi JPAANM Goto; JungoAACI Osaka-shiAACO JPAAGP Goto; Jungo Osaka-shi JP - A high spectrum efficiency is achieved even in a system where mobile station apparatuses with different units of assignment coexist. A base station apparatus, which performs radio communication with a mobile station apparatus, newly defines a minimum unit of assignment for each of the mobile station apparatuses, determines band assignment, and notifies each of the mobile station apparatuses of assignment information, when a mobile station apparatus with an RB (Resource Block) being a minimum unit of assignment and a mobile station apparatus with an RBG (RB Group) being a minimum unit of assignment coexist. In addition, the minimum unit of is newly defined by defining the number of RBs constituting an RBG for each mobile station apparatus. | 01-17-2013 |
20130028226 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, PROGRAM AND TRANSMISSION METHOD - A wireless communication system includes a first wireless communication apparatus, which includes a plurality of transmission antennas and transmits signals in an MIMO scheme, and a second wireless communication apparatus, which receives the signals. The first wireless communication apparatus performs the same frequency allocation for transmission antennas from which the same data is transmitted in case that transmission is performed in a rank less than the number of transmission antennas. | 01-31-2013 |
20130039405 | COMMUNICATION SYSTEM, TRANSMISSION DEVICE, RECEPTION DEVICE, PROGRAM, AND PROCESSOR - A coding scheme selection unit outputs bits of a signal in a past reception to a second coding unit and outputs bits of a retransmission signal to a third coding unit. The second coding unit decodes bits. The third coding unit codes bits with a different constraint length from a constraint length in the second coding unit. | 02-14-2013 |
20130083767 | WIRELESS TRANSMISSION APPARATUS, CONTROL PROGRAM, AND INTEGRATED CIRCUIT - In a communication system for performing transmission using non-contiguous frequency bands, transmit power control is performed in which minimum MPR is applied. A wireless transmission apparatus allocates at least one spectrum within a system band and performs transmit power control. The wireless transmission apparatus includes a dividing unit that divides a spectrum into non-contiguous clusters on the basis of band allocation information, a power control amount determining unit that determines transmission power for the spectrum or each of the clusters in accordance with a frequency band to which the spectrum or the cluster is allocated, a power control unit that performs transmit power control on the spectrum or each of the clusters by using the determined transmission power, and an allocating unit that allocates the spectrum or each of the clusters on which transmit power control has been performed to a frequency band on the basis of the band allocation information. | 04-04-2013 |
20130100914 | COMMUNICATION SYSTEM, COMMUNICATION APPARATUS, AND COMMUNICATION METHOD - There are included a plurality of mapping units to which a plurality of data signal sequences related to the same data signal sequence are input via spectra cyclic shift units and which arrange the input data signal sequences on the frequency axis and output the arranged data signal sequences as transmission frequency spectra; an assignment information acquisition unit that controls the plurality of mapping units based on assignment information to cause the data signal sequences arranged on the frequency axis to partially overlap; the spectra cyclic shift units shifting, under control of an amount-of-shift decision unit, the input data signal sequences by an amount of cyclic shift to cause partially overlapping data signals to be identical and outputting the data signal sequences; and a plurality of transmit antennas that send out the transmission frequency spectra output by the plurality of mapping units. | 04-25-2013 |
20130100920 | WIRELESS COMMUNICATION SYSTEM, RECEPTION APPARATUS, RECEPTION CONTROL METHOD, RECEPTION CONTROL PROGRAM, AND PROCESSOR - A mobile station apparatus receives the same spectra that have been transmitted from at least one first transmit antenna and a second transmit antenna. An equalization unit performs, for each of the same spectra, using spectra of subcarriers having the same spectrum placed therein, equalization of the spectrum. | 04-25-2013 |
20130114550 | WIRELESS COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE STATION APPARATUS, AND COMMUNICATION METHOD - TPC is appropriately operated in response to access method switching timing, an error is prevented from occurring in communication, and influence given to another cell due to transmission of unnecessary power is reduced. | 05-09-2013 |
20130142158 | WIRELESS COMMUNICATION SYSTEM, COMMUNICATION APPARATUS, COMMUNICATION METHOD, AND COMMUNICATION PROGRAM - Provided are a wireless communication system, communication apparatus, communication method, and communication program able to more reliably decode transmit signals at a receiver without more complex processing, even when resource blocks are overloaded. | 06-06-2013 |
20130157667 | TRANSMISSION DEVICE, RECEPTION DEVICE, RELAY DEVICE, COMMUNICATION SYSTEM, TRANSMISSION METHOD, RECEPTION METHOD, RELAY METHOD, COMMUNICATION METHOD, COMPUTER PROGRAM, AND SEMICONDUCTOR CHIP - [Object] To estimate a channel with high accuracy by a receiver without an increase in scale or an increase in power consumption of a device because of use of complicated calculation, even when a transmission device or a relay device uses different frequencies. | 06-20-2013 |
20130242930 | WIRELESS TRANSMISSION DEVICE AND WIRELESS TRANSMISSION METHOD - A wireless transmission device is provisioned with a communication parameter setting unit configured to group time domain signals and setting different communication parameters for each group, a clipping unit configured to perform a clipping processing in the frequency domain on at least a portion of groups of the time domain signal, and a transmitting unit configured to transmit the time domain signal after the clipping processing. | 09-19-2013 |
20130265964 | WIRELESS CONTROL APPARATUS, WIRELESS TERMINAL APPARATUS, WIRELESS COMMUNICATION SYSTEM, CONTROL PROGRAM OF WIRELESS CONTROL APPARATUS AND WIRELESS TERMINAL APPARATUS AND INTEGRATED CIRCUIT - When a mobile station apparatus uses a multi-antenna, spectrum efficiency is improved with clipping performed on a transmission signal from the mobile station apparatus. There is provided a wireless control apparatus applied to a wireless communication system that performs clipping processing not to transmit a spectrum of part of a frequency domain so as to transmit and receive data, the wireless control apparatus, based on channel state information with a wireless terminal apparatus which is a destination, generates clipping information indicating a frequency domain where the clipping processing is performed and determines frequency allocation for the wireless terminal apparatus to generate frequency allocation information, and notifies the wireless terminal apparatus of the clipping information and the frequency allocation information. | 10-10-2013 |
20130265973 | COMMUNICATION SYSTEM, TRANSMITTING DEVICE, RECEIVING DEVICE, AND PROCESSOR - An encoding unit encodes an information bit sequence. An IDFT unit generates a spectrum from the signals of the information bit sequence. A clipping unit generates, when re-transmitting the information bit sequence, a transmission spectrum that differs from that of the previous transmission. An OFDM signal generation unit transmits the transmission spectrum. | 10-10-2013 |
20130272254 | COMMUNICATION SYSTEM AND COMMUNICATION METHOD - A communication system includes a first communication device that transmits a signal in the frequency domain, part of the signal being removed, and a second communication device that receives the transmitted signal. The second communication device determines a signal to be removed by the first communication device, and transmits information indicating the position of the signal to be removed. The first communication device receives the information indicating the position of the signal to be removed, removes part of the signal in the frequency domain on the basis of the information, and transmits the signal. Accordingly, clipping can be performed in accordance with the state of a channel. | 10-17-2013 |
20130279439 | WIRELESS TRANSMISSION APPARATUS, WIRELESS RECEPTION APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND CONTROL PROGRAM AND INTEGRATED CIRCUIT OF WIRELESS TRANSMISSION APPARATUS - There is implemented a clipping technique that does not require a reception apparatus or a transmission apparatus to notify a transmission apparatus or a reception apparatus of information on clipping. A wireless transmission apparatus performs clipping processing not to transmit a spectrum of part of a frequency domain signal when transmitting data to a wireless reception apparatus and determines a frequency band to be subjected to the clipping processing using information other than information notified from the wireless reception apparatus and directly specifying a frequency band to be subjected to the clipping processing. | 10-24-2013 |
20130324143 | WIRELESS CONTROL APPARATUS, WIRELESS COMMUNICATION SYSTEM, CONTROL PROGRAM, AND INTEGRATED CIRCUIT - In SORM (Spectrum-Overlapped Resource Allocation), interference to other cells caused by an increase in transmit power of mobile station apparatuses is suppressed. A wireless control apparatus allows a plurality of wireless terminal apparatuses to locate transmit signals at part of frequencies in a system band in an overlapping manner, and determines frequencies at which the individual wireless terminal apparatuses locate transmit signals, so that an interference level of the entire system band is suppressed to be lower than or equal to a certain value. Also, the wireless control apparatus determines frequencies at which the individual wireless terminal apparatuses locate transmit signals, so that a total sum of frequency bands allocated to the individual wireless terminal apparatuses is smaller than or equal to the system band. | 12-05-2013 |
20130329682 | WIRELESS CONTROL DEVICE, WIRELESS TERMINAL DEVICE, WIRELESS COMMUNICATION SYSTEM, CONTROL PROGRAM AND INTEGRATED CIRCUIT - A convergence property as ability of removing inter-user interference of turbo equalization is improved in case of using a transmission method in which overlapping of a part of spectrum is allowed among a plurality of users. A wireless control device receiving a signal which is transmitted at the same transmitting timing by a plurality of wireless terminal devices, and performs a signal detection using turbo equalization, and the device includes a transmission method determination unit | 12-12-2013 |
20130329829 | WIRELESS CONTROL APPARATUS, WIRELESS COMMUNICATION SYSTEM, CONTROL PROGRAM, AND INTEGRATED CIRCUIT - In a transmission method using spectrum shaping, interference to other cells caused by an increase in transmit power of mobile station apparatuses is suppressed. A wireless control apparatus performs control in which at least one wireless terminal apparatus clips part of frequencies in a system band and locates a transmit signal. The wireless control apparatus determines frequencies at which the individual wireless terminal apparatuses locate transmit signals, so that an interference level of the entire system band is suppressed to be lower than or equal to a certain value. Also, the wireless control apparatus determines frequencies at which the individual wireless terminal apparatuses locate transmit signals, so that a total sum of frequency bands allocated to the wireless terminal apparatuses before clipping is smaller than or equal to the system band. | 12-12-2013 |
20130329830 | RECEIVING DEVICE, TRANSMITTING DEVICE, RECEIVING METHOD, TRANSMITTING METHOD, PROGRAM, AND WIRELESS COMMUNICATION SYSTEM - A reception device comprises a reception unit for receiving signals transmitted by assigning respectively a plurality of different frequency signal groups, which are generated based on a same bit sequence, to a plurality of layers, an MIMO separation unit for executing MIMO separation of the signals, received by the reception unit, into the frequency signal groups corresponding respectively to the plural layers, and a merging unit for merging individual items of information based on the frequency signal groups obtained by the MIMO separation, the items of information corresponding respectively to the plural layers. | 12-12-2013 |
20130336276 | WIRELESS COMMUNICATION SYSTEM, WIRELESS TRANSMISSION METHOD, TRANSMITTING DEVICE, AND PROCESSOR - A transmitting device is a transmitting device configured to transmit a signal, and is provisioned with a determination unit configured to determine whether or not to perform a frequency clipping to remove a portion of a spectrum of the signal to transmit on the basis of a control information representing a frequency band used by the transmitting device to transmit data. | 12-19-2013 |
20130343320 | TERMINAL DEVICE, BASE STATION DEVICE, AND WIRELESS COMMUNICATION SYSTEM - A DMRS generator generates reference signals used for demodulation to which orthogonal codes, which are a code for one layer and a code for another layer being orthogonal to each other, are assigned. Concerning each of layers up to the predetermined number of layers, codes are assigned to the reference signals according to the same rules as assignment rules employed in a different terminal device. Accordingly, the throughput can be increased. | 12-26-2013 |
20140056213 | RADIO RELAY METHOD, BASE STATION, AND RADIO COMMUNICATION SYSTEM - A frequency resource required for communication between an RS and an eNB is reduced. Provided is a radio relay method for relaying a radio signal exchanged between a mobile station and a base station. The radio relay method includes performing relaying such that a frequency to be used in a case of relaying at least one of transmission signals transmitted from a plurality of mobile stations is overlapped with and allocated to at least a part of a frequency to which another non-relayed transmission signal is allocated. The frequency to be used for transmitting the relayed transmission signal may be disposed discretely on a frequency axis. | 02-27-2014 |
20140126507 | RECEIVING APPARATUS, FREQUENCY ASSIGNMENT METHOD, CONTROL PROGRAM, AND INTEGRATED CIRCUIT - In a communication system using retransmission control, throughput reduction is suppressed in a state in which an occurrence rate of retransmission is high. A receiving apparatus configured to, in a case where a signal received from a transmitting apparatus includes an error, request the transmitting apparatus to provide a retransmission signal, includes check units | 05-08-2014 |
20140205038 | TERMINAL DEVICE, BASE STATION DEVICE, PROGRAM, AND INTEGRATED CIRCUIT - In a cellular system, new precoding that enables the performance of precoding to be adequately utilized is introduced, and thereby throughput is increased. There is provided a terminal device that includes a plurality of transmit antennas and that performs precoding on a transmit signal. The terminal device includes a codebook selector | 07-24-2014 |
20140301333 | RECEPTION DEVICE, RECEPTION METHOD, AND WIRELESS COMMUNICATION SYSTEM - A reception device is provided which can realize flexible frequency assignment to individual transmission devices in coordinated communication for receiving signals through coordination, while an influence caused by inter-user interference is reduced. In a reception device receiving a signal from a transmission device in coordination with at least one other reception device, the reception device includes a reception unit that receives the signal transmitted from the transmission device, a coordinated communication unit that, when a part of a frequency band of the signal transmitted from the transmission device is overlapped with a frequency band of a signal transmitted from another transmission device, receives from the other reception device a spectrum in at least a part of the overlapped frequency band of the signal transmitted from the transmission device, and a first reception processing unit that executes a reception process of the signal received by the reception device by employing the spectrum received by the coordinated communication unit. | 10-09-2014 |
20140341179 | BASE STATION DEVICE, WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION DEVICE, FREQUENCY BAND ALLOCATION METHOD, AND PROGRAM - The present invention makes it possible to minimize a decrease in the efficiency of frequency band utilization even if a constraint is placed on the number of points when performing an orthogonal transform. A base station device includes an allocation determination unit configured to allocate a frequency band of subcarriers to each of a plurality of communication devices that applies an orthogonal transform to a signal to be transmitted and transmits the signal by arranging the signal on the subcarriers, a communication device selection unit configured to select, from among the plurality of communication devices, a communication device for which the number of subcarriers included in the frequency band allocated to the communication device by the allocation determination unit is not a prescribed number, and a frequency band adjustment unit configured to perform a change that changes a frequency band allocated to the selected communication device, from the frequency band allocated by the allocation determination unit. The frequency band adjustment unit performs the change in such a way that the number of subcarriers included in a frequency band obtained as a result of the change becomes the prescribed number. | 11-20-2014 |
20140369397 | COMMUNICATION DEVICE, COMMUNICATION METHOD, COMMUNICATION PROGRAM, PROCESSOR, AND COMMUNICATION SYSTEM - An iterative processing unit iterates equalization processing on a reception signal. A PMI determination unit determines a precoding matrix by taking into consideration an interference amount that is removable by the iterative processing unit. A control information transmission unit transmits information indicating the precoding matrix. | 12-18-2014 |
20150029981 | MOBILE STATION DEVICE, BASE STATION DEVICE, WIRELESS COMMUNICATION SYSTEM AND TRANSMISSION METHOD - A probability of collision when a plurality of mobile station devices use contention based (CB) transmission is reduced. Provided is a mobile station device which performs the CB transmission, based on a control signal received from a base station device. The mobile station device includes a control information extraction unit | 01-29-2015 |
20150043451 | BASE STATION DEVICE, PROGRAM, INTEGRATED CIRCUIT, MOBILE STATION DEVICE, AND COMMUNICATION SYSTEM - The present invention reduces the amount of frequency resources required for uplink cooperative communication. There is provided a base station device that is applied to a communication system in which a plurality of base station devices establish cooperative communication with at least one mobile station device and includes a base station-to-base station communication section | 02-12-2015 |
20150063207 | RECEPTION DEVICE, POST-DECODING LIKELIHOOD CALCULATION DEVICE, AND RECEPTION METHOD - A reception device that can transmit, at a good error rate, information on which error correction has been performed by a block code is provided. The reception device includes a demodulating unit that generates a demodulation result of each coded bit for the signal received from the transmission device, a decoding unit that calculates a post-decoding likelihood of the block code based on the demodulation result, a symbol replica generating unit that generates a symbol replica based on the post-decoding likelihood, and a cancelling unit that cancels interference from the received signal by using the symbol replica. | 03-05-2015 |
20150063238 | CONTROL STATION APPARATUS, WIRELESS COMMUNICATION SYSTEM, ALLOCATION METHOD AND PROGRAM - Means of configuring a reference signal unique to a mobile station apparatus is provided. There is provided a control station apparatus notifying a first mobile station apparatus of a parameter group generating a reference signal. The control station apparatus includes: an RRC layer to configure a parameter set including a plurality of parameter groups generating the reference signal; and a physical layer to select one of the parameter groups and notify the mobile station apparatus. It is preferred that the parameter set is configured with a plurality of parameter groups that respectively configure a sequence number and a cyclic shift hopping pattern of the reference signal and includes a parameter group generating a reference signal the same as in a second mobile station apparatus different from the first mobile station apparatus. | 03-05-2015 |
20150124902 | TRANSMITTING DEVICE, RECEIVING DEVICE, TRANSMITTING METHOD, PROGRAM, AND INTEGRATED CIRCUIT - When signals to be transmitted to a plurality of mobile station devices are multiplexed by hierarchical modulation in a downlink, an increase in difference in reception quality among the mobile station devices is prevented. A transmitting device of the present invention is a transmitting device which performs data transmission to a plurality of receiving devices by using a plurality of symbols and a plurality of layers with different distances between signal points, and includes a modulating unit | 05-07-2015 |
20150139003 | MOBILE STATION DEVICE, PATH LOSS CALCULATION METHOD, PROGRAM, AND INTEGRATED CIRCUIT - Disclosed is a mobile station device | 05-21-2015 |
20150208412 | COMMUNICATION SYSTEM, COMMUNICATION DEVICE, AND COMMUNICATION METHOD - A wireless communication system includes a first communication device and a second communication device, in which the first communication device includes a cyclostationarity assignment unit that establishes a correlation between signals on two subcarriers that are a predetermined interval away from each other, the two subcarriers including at least one subcarrier on which a data signal to be transmitted to the second communication device is arranged, and the second communication device includes a frequency interval determination unit that determines the predetermined frequency interval according to information that has to be notified to a different device by the first communication device. Thus, a communication system is provided that is capable of suppressing a decrease in frame efficiency when assigning cyclostationarity. | 07-23-2015 |
20150223177 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION METHOD, PROGRAM, AND INTEGRATED CIRCUIT - In a case where transmission power control is performed for a plurality of CCs in CA, information transmitted between a transmitter and a receiver in terms of the transmission power control is reduced. A wireless communication apparatus according to the present invention is a wireless communication apparatus configured to perform communication using at least two or more types of component carriers, including transmission power control units | 08-06-2015 |
20150244496 | BIT CODING DEVICE, BIT DECODING DEVICE, TRANSMISSION DEVICE, RECEPTION DEVICE, BIT CODING METHOD, BIT DECODING METHOD, TRANSMISSION METHOD, RECEPTION METHOD, AND PROGRAM - A bit coding device that creates a coded bit sequence by performing error correction coding on an input bit sequence that is input, includes a coding unit that creates a first bit sequence by performing the error correction coding on the input bit sequence, an extraction unit that extracts a second bit sequence from the first bit sequence, and an information compression unit that creates a third bit sequence by performing lossy compression on the second bit sequence, in which coded bits include at least a portion of the third bit sequence. | 08-27-2015 |
20150257060 | BASE STATION APPARATUS - There has been a problem that overhead increased from a time when a macro base station apparatus transmits, to a mobile station apparatus, an instruction of connection to small cell to a time when a pico base station apparatus performs scheduling of the mobile station apparatus. A first base station apparatus that constitutes a first cell for transmitting control information to a mobile station apparatus, in which a second cell, that is constituted by a second base station apparatus exists in the first cell, the control information with which the first base station apparatus gives an instruction of transmission of a reference signal to the mobile station apparatus in the first cell includes therein information for designating to transmit the reference signal to either the first base station apparatus or the second base station apparatus and information of a transmission parameter that is used for transmission of the reference signal to a base station apparatus that is instructed in the control information, and the first base station apparatus notifies the mobile station apparatus of the control information. | 09-10-2015 |
20150264585 | TERMINAL APPARATUS - A terminal uses different access methods between when the terminal transmits a signal to a pico base station and when the terminal uses a macro base station as a receiving station without increasing the amount of control information to be transmitted from the base station to the terminal. A terminal apparatus of the present invention communicates with a macro base station that forms a first cell or a pico base station that forms a second cell smaller than the first cell. Upon reception of an instruction to communicate with the pico base station from the macro base station (S | 09-17-2015 |
20150282092 | TERMINAL DEVICE - There has been a problem that when transmit power control is performed so as to compensate for a certain pathloss regardless of a type of a transmit signal, reception is not performed at a receiving end with an appropriate receive power in a case where a destination differs depending on a type of a transmit power. A terminal device includes a transmit power control unit that determines a transmit power. The transmit power control unit includes at least two types of transmit power equations which are used in determining the transmit power, determines the transmit power based on one of the equations when a scheduling request is transmitted to one of the multiple base stations, and determines the transmit power based on the other equation that is different from the one equation when information is transmitted to an another one of the base stations. The terminal device includes a transmission unit that transmits data based on the determined transmit power. | 10-01-2015 |
20150289275 | MOBILE STATION DEVICE AND COMMUNICATION METHOD - A mobile station device is provided that is capable of suppressing an increase in a resource that is occupied by a PUCCH while maintaining backward compatibility in LTE. A reference signal that is spread using a spread code that has an orthogonal relationship with a spread code is arranged in a domain in which a data signal that is spread by the spread code is arranged in the PUCCH in the LTE in the related art. | 10-08-2015 |
20150341910 | TERMINAL APPARATUS - A terminal apparatus, which performs communication with a first base station apparatus and a second base station apparatus which has a smaller maximum transmit power than that of the first base station apparatus, includes a control unit that extracts control information from signals received from the first base station apparatus and the second base station apparatus and sets communication parameters of an uplink data signal, in which a bit number of information which is extracted by the control unit as the control information from the signal from the second base station apparatus is smaller than a bit number of information which is extracted as the control information from the signal from the first base station apparatus. | 11-26-2015 |
20160073364 | WIRELESS COMMUNICATION SYSTEM, BASE STATION APPARATUS, MOBILE STATION APPARATUS, AND COMMUNICATION METHOD - A communication system including a base station apparatus and a mobile station apparatus. The base station apparatus performs communication with the mobile station apparatus that transmits data using two or more access schemes that are different respectively. In addition, the base station apparatus generates control information including information specifying said access scheme and TPC (Transmit Power Control) control data. Furthermore, the base station apparatus notifies the mobile station apparatus of said control information at least at a timing when said transmission apparatus performs instruction that said mobile station apparatus changes said access scheme. | 03-10-2016 |