Patent application number | Description | Published |
20090147688 | RADIO COMMUNICATION TERMINAL DEVICE, RADIO COMMUNICATION BASE STATION DEVICE, AND RADIO COMMUNICATION METHOD - It is possible to provide a radio communication terminal device, a radio communication base station device, and a radio communication method capable of improving the resource use efficiency and the throughput in synchronous random access. A resource control unit ( | 06-11-2009 |
20090298523 | RADIO COMMUNICATION BASE STATION APPARATUS, RADIO COMMUNICATION TERMINAL APPARATUS, AND RESOURCE BLOCK ALLOCATION METHOD - Provided is a radio communication base station device capable of obtaining a large multi-user diversity effect while suppressing increase of overhead of a communication signal. The radio communication base station device includes a scheduler ( | 12-03-2009 |
20090323641 | RADIO COMMUNICATION MOBILE STATION DEVICE AND MCS SELECTION METHOD - Provided is a radio communication mobile station device capable of preventing a transmission delay when a transmission data amount is increased in a radio communication system where persistent scheduling is performed. In this device, an MCS selection unit ( | 12-31-2009 |
20100002671 | RADIO TRANSMITTING APPARATUS AND RADIO TRANSMITTING METHOD - A radio transmitting apparatus and a radio transmitting method wherein the interference between codes can be reduced and the degradation of preamble detection capability can be prevented. According to these apparatus and method, a signature table storing part (103) that stores a table including a plurality of signatures obtained by classifying the magnitudes of propagation loss levels into levels in accordance with the distances from a base station, associating preamble detection window widths with those levels as classified, and by circularly shifting the pattern of a detection window signature #n corresponding to a signature #n to generate a signature #n+1. A signature selecting part ( | 01-07-2010 |
20100002804 | RADIO TRANSMISSION DEVICE AND RADIO TRANSMISSION METHOD - It is possible to provide a radio transmission device and a radio transmission method which can avoid degradation of a channel estimation accuracy using a reference signal formed by a ZC sequence even when the RS transmission band of a local cell is different from that of an adjacent cell. A mobile station decides a cyclic shift sequence corresponding to RB allocation information from an RS table which correlates different frequency bandwidths from a reference point of respective transmission bands to a spectrum start number of the cyclic shift sequence so as to satisfy a particular relationship based on the sequence length and transmits the decided cyclic shift sequence as RS to a base station. The base station uses the same RS table as the RS table of the mobile station and performs correlation calculation of the RS transmitted from the mobile station, thereby performing channel estimation. | 01-07-2010 |
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 |
20100086082 | RADIO COMMUNICATION TERMINAL DEVICE, RADIO COMMUNICATION BASE STATION DEVICE, AND RADIO COMMUNICATION METHOD - Disclosed are a radio communication terminal device, a radio communication base station device, and a radio communication method which can prevent input of an interference wave peak into a detection window of a cyclic shift sequence allocated to a local cell and improve the channel estimation accuracy in a base station. A frequency serving as a reference is set for a transmission band width of all the cells and respective terminals in which frame synchronization is established. By using the frequency as a reference point, a phase rotation addition unit ( | 04-08-2010 |
20100099423 | SEQUENCE ALLOCATION METHOD IN MOBILE COMMUNICATION SYSTEM - Provided is a sequence allocation method capable of reducing inter-cell interference of a reference signal when a ZC sequence is used as the reference signal in a mobile communication system. In the sequence allocation method divides R×M sequences specified by a ZC sequence number r (r=1 to R) and a cyclic shift sequence number m (m=1 to M) into a plurality of sequence groups X (X=1 to R) in accordance with the transmission band width of the reference signal, so that the ZC sequence is allocated to each cell in each sequence group unit. When it is assumed that R=9 and M=6, the number of sequence is 54. Each of the sequence groups is formed by two sequences. Accordingly, the number of sequence groups is 27. The 27 types of sequence groups are allocated to each cell. | 04-22-2010 |
20100111142 | Radio Transmission Device and Radio Transmission Method - Disclosed are a radio transmission device and a radio transmission method which can reduce a processing amount or a memory amount while maintaining the randomizing effect of other cell interference. When using as a reference signal, a ZC sequence of the sequence length uniquely correlated to a transmission bandwidth of a reference signal, as the transmission bandwidth becomes smaller and the sequence length of the ZC sequence becomes shorter, the sequence is switched at a shorter time interval and as the transmission bandwidth becomes greater and the sequence length of the ZC sequence becomes longer, the switching is performed at a longer time interval. Thus, a reference signal is generated by using the ZC sequence in accordance with the timing into which the reference signal transmission bandwidth and the sequence are switched. | 05-06-2010 |
20100173642 | Sequence Allocating Method, Transmitting Method and Wireless Mobile Station Device - It is an object to provide a sequence allocating method that, while maintaining the number of Zadoff-Chu sequences to compose a sequence group, is configured to make it possible to reduce correlations between different sequential groups. This method comprises the steps of setting a standard sequence with a standard sequence length (Nb) and a standard sequence number (rb) in a step (ST | 07-08-2010 |
20100195637 | RADIO COMMUNICATION DEVICE AND SEQUENCE LENGTH ADJUSTING METHOD - Provided is a radio communication device which can prevent generation of mutual correlation peak between ZC sequences and reduce degradation of BLER characteristic of a CS-ZC sequence. In this device, a sequence length adjustment unit ( | 08-05-2010 |
20100195700 | Cyclic Shift Sequence Generation Method, Radio Communication Terminal Device, and Radio Communication Base Station Device - Provided is a cyclic shift sequence generation method which can prevent coming of an interference wave into a desired wave detection window even if a cyclic shift sequence has a high mutual correlation in different bandwidths, thereby improving a channel estimation accuracy in a base station. In this method, a cyclic shift sequence number to be allocated to a cell is decided in advance. Moreover, when the cyclic shift amount between cyclic shift sequences allocated in cells is Δ | 08-05-2010 |
20100210274 | Sequence Allocating Method and Wireless Mobile Station Device - It is an object to provide a sequence allocating method that, while maintaining the number of Zadoff-Chu sequences to compose a sequence group, is configured to make it possible to reduce correlations between different sequential groups and between same sequential groups. This method comprises the steps of setting a standard sequence with a standard sequence length (Nb) and a standard sequence number (rb) in a step (ST | 08-19-2010 |
20100232284 | RADIO TRANSMITTING APPARATUS AND RADIO TRANSMITTING METHOD - A radio transmitting apparatus and a radio transmitting method wherein the throughput is improved and a fast initial access processing including an RA burst is accomplished. According to these apparatus and method, a signature table storing part ( | 09-16-2010 |
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 |
20100265814 | SEQUENTIAL TRANSMISSION METHOD - Provided is a sequential allocation method which can reduce mutual correlation between different sequential groups while maintaining a number of sequential groups. ST | 10-21-2010 |
20100272022 | SEQUENCE HOPPING METHOD, WIRELESS COMMUNICATION TERMINAL APPARATUS AND WIRELESS COMMUNICATION BASE STATION APPARATUS - A wireless communication terminal apparatus wherein the occurrences of inter-sequence interferences between a reference signal preceding a sequence hopping and a reference signal following the sequence hopping can be reduced so as to improve the randomizing effect achieved by the sequence hopping. In this apparatus, a sequence number deciding part ( | 10-28-2010 |
20100284394 | RADIO COMMUNICATION TERMINAL DEVICE AND RADIO TRANSMISSION METHOD - It is possible to provide a radio communication terminal device and a radio transmission method which can improve reception performance of a CQI and a reference signal. A phase table storage unit ( | 11-11-2010 |
20100285755 | SEQUENCE NUMBER ESTABLISHING METHOD, WIRELESS COMMUNICATION TERMINAL APPARATUS AND WIRELESS COMMUNICATION BASE STATION APPARATUS - A wireless communication terminal apparatus wherein the occurrences of inter-sequence interferences between cells can be reduced. In this apparatus, a sequence number deciding part ( | 11-11-2010 |
20110075760 | RADIO TRANSMISSION DEVICE AND RADIO COMMUNICATION METHOD - It is possible to provide a radio transmission device and a radio communication method which can reduce inter-sequence interference and reduce the circuit size and the calculation amount even when RS is transmitted with different transmission bandwidths. Sequence length decision units ( | 03-31-2011 |
20110080966 | BASE STATION APPARATUS, SEQUENCE ASSIGNING METHOD AND REFERENCE SIGNAL GENERATING METHOD - Provided is a sequence allocation method capable of reducing inter-cell interference of a reference signal when a ZC sequence is used as the reference signal in a mobile communication system. In the sequence allocation method divides R×M sequences specified by a ZC sequence number r (r=1 to R) and a cyclic shift sequence number m (m=1 to M) into a plurality of sequence groups X (X=1 to R) in accordance with the transmission band width of the reference signal, so that the ZC sequence is allocated to each cell in each sequence group unit. When it is assumed that R=9 and M=6, the number of sequence is 54. Each of the sequence groups is formed by two sequences. Accordingly, the number of sequence groups is 27. The 27 types of sequence groups are allocated to each cell. | 04-07-2011 |
20110081929 | BASE STATION APPARATUS AND RADIO COMMUNICATION METHOD - Provided is a radio communication device which can prevent interference between SRS and PUCCH when the PUCCH transmission bandwidth fluctuates and suppress degradation of CQI estimation accuracy by the band where no SRS is transmitted. The device includes: an SRS code generation unit ( | 04-07-2011 |
20110134879 | WIRELESS COMMUNICATION DEVICE AND POWER DENSITY SETTING METHOD - Disclosed is a wireless communication device that, when both localized transmission and distributed transmission are used, can obtain channel estimation accuracy equivalent to that of localized transmission with distributed transmission. With this device, a setting unit ( | 06-09-2011 |
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 |
20110170502 | WIRELESS TRANSMISSION APPARATUS AND WIRELESS TRANSMISSION METHOD - In DFT-s-OFDM, disclosed are a wireless transmission apparatus and wireless transmission method whereby freedom of allocation of frequencies is secured, while increases of CM are avoided. An SD number determination unit ( | 07-14-2011 |
20110182266 | SEQUENCE ALLOCATING METHOD, TRANSMITTING METHOD AND WIRELESS MOBILE STATION DEVICE - It is an object to provide a sequence allocating method that, while maintaining the number of Zadoff-Chu sequences to compose a sequence group, is configured to make it possible to reduce correlations between different sequential groups. This method comprises the steps of setting a standard sequence with a standard sequence length (Nb) and a standard sequence number (rb) in a step (ST | 07-28-2011 |
20110182328 | RADIO COMMUNICATION DEVICE AND RESPONSE SIGNAL DIFFUSION METHOD - Provided is a radio communication device which can surely prevent inter-code interference while maintaining the use efficiency of an upstream line control channel and suppress separation characteristic of a response signal. The device includes: a control unit ( | 07-28-2011 |
20110205966 | RADIO TRANSMISSION DEVICE AND RADIO TRANSMISSION METHOD - Provided are a radio transmission device and a radio transmission method which can suppress lowering of the throughput caused by switching between the single carrier communication method and the multi-carrier communication method while suppressing increase of the signaling amount. A PHR threshold value setting unit ( | 08-25-2011 |
20110205973 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - Disclosed is a wireless communication apparatus that can improve the efficiency of using data resources, while suppressing the increase in CM of transport signals in a wireless communication system in which single-carrier transmissions and multi-cluster transmissions are coexistent. In this apparatus, a multiplex manner deciding unit ( | 08-25-2011 |
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 |
20110287797 | WIRELESS TRANSMITTER AND REFERENCE SIGNAL TRANSMISSION METHOD - Disclosed are a wireless transmitter and a reference signal transmission method that improve channel estimation accuracy. In a terminal ( | 11-24-2011 |
20110299496 | SCHEDULING APPARATUS AND SCHEDULING METHOD - A scheduling apparatus and a scheduling method, wherein the amount of signaling for frequency resource allocation information can be reduced while maintaining system throughput performance. In a base station apparatus ( | 12-08-2011 |
20120008589 | WIRELESS BASE STATION APPARATUS, WIRELESS TERMINAL APPARATUS, FREQUENCY RESOURCE ALLOCATION METHOD, AND METHOD OF FORMING TRANSMISSION SIGNAL - A wireless base station apparatus and wireless terminal apparatus with a configuration which can prevent reductions in the accuracy of channel estimation when non-contiguous band transmission and SRS transmission are employed in an uplink line. In the base station apparatus ( | 01-12-2012 |
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 |
20120026948 | WIRELESS COMMUNICATION BASE STATION DEVICE AND DIVISION NUMBER DETERMINATION METHOD - Disclosed are a wireless communication base station device and a division number determination method that improves the frequency diversity effect while maintaining channel estimation accuracy regardless of the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. A determination unit ( | 02-02-2012 |
20120026953 | COMMUNICATION DEVICE AND COMMUNICATION METHOD - Disclosed are a wireless communication base station device, a wireless communication terminal device, and a wireless communication method with which the amount of signaling is reduced while maintaining a high scheduling gain. A judgment unit ( | 02-02-2012 |
20120057495 | RADIO COMMUNICATION BASE STATION DEVICE AND CORRELATION SETTING METHOD - Provided is a radio communication base station device which can suppress a use amount of an SRS communication resource. In this device, a correlation rule setting unit ( | 03-08-2012 |
20120063469 | SCHEDULING DEVICE AND SCHEDULING METHOD - Provided are a scheduling device and a scheduling method, in which the amount of signaling of frequency resource allocation information can be reduced while the system throughput is maintained. In a base station device ( | 03-15-2012 |
20120093020 | RADIO COMMUNICATION APPARATUSES AND RADIO COMMUNICATION METHOD - Provided are a radio communication mobile station apparatus, a radio communication base station apparatus and a radio communication method, which make it possible to correctly switch between transmission modes for a PUSCH and a PUCCH while impeding signaling overhead from increasing. A transmission mode setting unit ( | 04-19-2012 |
20120094709 | WIRELESS TRANSMISSION APPARATUS AND TRANSMISSION POWER CONTROL METHOD - Disclosed are a wireless transmission apparatus and transmission power control method which improve the error rate characteristics of data signals even when the number of streams of data signals increases, without increasing the amount of signaling. The relationship between the number of streams of data signals in each antenna ( | 04-19-2012 |
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 |
20120115526 | RADIO BASE STATION AND RADIO COMMUNICATION METHOD - Disclosed is a base station capable of minimizing in Type 0 assignment the number of resource block groups occupied by a terminal that performs frequency hopping, and thereby flexibly assigning resources in the Type 0 assignment. The base station ( | 05-10-2012 |
20120147847 | INTEGRATED CIRCUIT FOR CONTROLLING RADIO COMMUNICATION - Provided is a radio communication device which can prevent interference between SRS and PUCCH when the PUCCH transmission bandwidth fluctuates and suppress degradation of CQI estimation accuracy by the band where no SRS is transmitted. The device includes: an SRS code generation unit ( | 06-14-2012 |
20120165054 | INTEGRATED CIRCUIT FOR CONTROLLING SEQUENCE ASSIGNING METHOD AND REFERENCE SIGNAL GENERATING METHOD - Provided is a sequence allocation method capable of reducing inter-cell interference of a reference signal when a ZC sequence is used as the reference signal in a mobile communication system. In the sequence allocation method divides R×M sequences specified by a ZC sequence number r (r=1 to R) and a cyclic shift sequence number m (m=1 to M) into a plurality of sequence groups X (X=1 to R) in accordance with the transmission band width of the reference signal, so that the ZC sequence is allocated to each cell in each sequence group unit. When it is assumed that R=9 and M=6, the number of sequence is 54. Each of the sequence groups is formed by two sequences. Accordingly, the number of sequence groups is 27. The 27 types of sequence groups are allocated to each cell. | 06-28-2012 |
20120170444 | TERMINAL STATION APPARATUS, BASE STATION APPARATUS, TRANSMISSION METHOD AND CONTROL METHOD - A terminal apparatus is disclosed wherein even in a case of applying SU-MIMO and MU-MIMO at the same time, the inter-sequence interference in a plurality of pilot signals used by the same terminal can be suppressed to a low value, while the inter-sequence interference in pilot signal between terminals can be reduced. In this terminal apparatus ( | 07-05-2012 |
20120177090 | RADIO COMMUNICATION TERMINAL DEVICE AND RADIO COMMUNICATION METHOD - Provided are a radio communication terminal apparatus and a radio transmission method by which intersymbol interference of DM-RS of a CoMP terminal and a Non-CoMP terminal can be reduced. A CoMP set setting unit ( | 07-12-2012 |
20120195274 | INTEGRATED CIRCUIT FOR CONTROLLING A PROCESS - It is an object to provide a sequence allocating method that, while maintaining the number of Zadoff-Chu sequences to compose a sequence group, is configured to make it possible to reduce correlations between different sequential groups. This method comprises the steps of setting a standard sequence with a standard sequence length (Nb) and a standard sequence number (rb) in a step (ST | 08-02-2012 |
20120207077 | WIRELESS COMMUNICATION APPARATUS AND REFERENCE SIGNAL GENERATING METHOD - Provided are a wireless communication apparatus and a reference signal generating method, wherein inter-cell interference is reduced inside and outside a CoMP set. A CoMP mode setting unit ( | 08-16-2012 |
20120263131 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - There are disclosed a wireless communication apparatus and a wireless communication method whereby a flexible frequency scheduling can be performed without increasing the circuit scale of DFT (Discrete Fourier Transform). In a terminal ( | 10-18-2012 |
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 |
20120287770 | WIRELESS COMMUNICATION TERMINAL APPARATUS, WIRELESS COMMUNICATION BASE STATION APPARATUS AND WIRELESS COMMUNICATION METHOD - Provided are a wireless communication terminal apparatus, a radio communication base station apparatus and a wireless communication method whereby the increase in the number of signaling bits can be suppressed, while the SRS capacity can be improved. RS type determining unit ( | 11-15-2012 |
20120288025 | TERMINAL AND COMMUNICATION METHOD THEREOF - A terminal and a communication method thereof whereby, even in a case of employing the asymmetric carrier aggregation system and further employing the MIMO transmission method for upstream channels, the error characteristic of control information can be prevented from being degraded. In the terminal ( | 11-15-2012 |
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 |
20130003659 | RADIO COMMUNICATION BASE STATION DEVICE AND CORRELATION SETTING METHOD - Provided is a radio communication base station device which can suppress a use amount of an SRS communication resource. In this device, a correlation rule setting unit ( | 01-03-2013 |
20130003684 | INTEGRATED CIRCUIT FOR CONTROLLING SEQUENCE ASSIGNING METHOD AND REFERENCE SIGNAL GENERATING METHOD - Provided is a sequence allocation method capable of reducing inter-cell interference of a reference signal when a ZC sequence is used as the reference signal in a mobile communication system. In the sequence allocation method divides R×M sequences specified by a ZC sequence number r(r=1 to R) and a cyclic shift sequence number m (m=1 to M) into a plurality of sequence groups X (X=1 to R) in accordance with the transmission band width of the reference signal, so that the ZC sequence is allocated to each cell in each sequence group unit. When it is assumed that R=9 and M=6, the number of sequence is 54. Each of the sequence groups is formed by two sequences. Accordingly, the number of sequence groups is 27. The 27 types of sequence groups are allocated to each cell. | 01-03-2013 |
20130010833 | TERMINAL APPARATUS, BASE STATION APPARATUS, PILOT TRANSMITTING METHOD, AND PROPAGATION PATH ESTIMATING METHOD - Provided is a terminal apparatus that can suppress the increase in interference between pilot signals in the same slot, while also suppressing the degradation of the flexibility to design cell cluster structures. When hopping information indicates an inter-slot hopping, a mapping unit ( | 01-10-2013 |
20130039329 | INTEGRATED CIRCUIT FOR CONTROLLING RADIO COMMUNICATION - Provided is a radio communication device which can prevent interference between SRS and PUCCH when the PUCCH transmission bandwidth fluctuates and suppress degradation of CQI estimation accuracy by the band where no SRS is transmitted. The device includes: an SRS code generation unit ( | 02-14-2013 |
20130040689 | WIRELESS COMMUNICATION DEVICE AND METHOD FOR CONTROLLING TRANSMISSION POWER - Disclosed is a wireless communication device that can suppress an increase in power consumption of a terminal while preventing the degradation of SINR measurement precision resulting from TPC errors in a base station. A terminal ( | 02-14-2013 |
20130064212 | TERMINAL APPARATUS AND COMMUNICATION METHOD THEREOF - This invention is directed to a terminal apparatus capable of preventing the degradation of reception quality of control information even in a case of employing SU-MIMO transmission system. A terminal ( | 03-14-2013 |
20130064227 | WIRELESS COMMUNICATION DEVICE, AND WIRELESS COMMUNICATION METHOD - Disclosed are a wireless communication method and device which can maintain frequency scheduling flexibility and improve system throughput performance. A Walsh sequence number determination unit ( | 03-14-2013 |
20130072242 | WIRELESS TRANSMISSION DEVICE, WIRELESS RECEPTION DEVICE, AND BANDWIDTH ALLOCATION METHOD - Provided are a wireless transmission device, a wireless reception device, and a bandwidth allocation method for, when non-contiguous bands allocation is performed, improving the frequency resource use efficiency of a system and thereby improving the system performance. RIV decoding unit ( | 03-21-2013 |
20130089056 | WIRELESS COMMUNICATION APPARATUS, ALLOCATED RESOURCE NOTIFYING METHOD AND DATA ALLOCATING METHOD - Provided are a radio transmission apparatus and a radio transmission method whereby the increase of number of signaling bits can be suppressed and further the flexibility of frequency scheduling can be improved. A notified RBG calculating unit ( | 04-11-2013 |
20130089168 | RADIO TRANSMISSION DEVICE AND RADIO TRANSMISSION METHOD - It is possible to improve the CQI reception performance even when a delay is caused in a propagation path, a transmission timing error is caused, or a residual interference is generated between cyclic shift amounts of different ZC sequences. For the second symbol and the sixth symbol of the ACK/NACK signal which are multiplexed by RS of CQI, (+, +) or (−, −) is applied to a partial sequence of the Walsh sequence. For RS of CQI transmitted from a mobile station, + is added as an RS phase of the second symbol and − is added as an RS phase of the sixth symbol. A base station ( | 04-11-2013 |
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 |
20130136085 | TERMINAL APPARATUS, BASE STATION APPARATUS, AND COMMUNICATION METHOD - Provided is a cyclic shift sequence generation method which can prevent coming of an interference wave into a desired wave detection window even if a cyclic shift sequence has a high mutual correlation in different bandwidths, thereby improving a channel estimation accuracy in a base station. In this method, a cyclic shift sequence number to be allocated to a cell is decided in advance. Moreover, when the cyclic shift amount between cyclic shift sequences allocated in cells is Δ | 05-30-2013 |
20130170467 | TRANSMITTER APPARATUS, RECEIVER APPARATUS, TRANSMISSION METHOD, AND RECEPTION METHOD - In a terminal ( | 07-04-2013 |
20130176962 | COMMUNICATION APPARATUS AND RECEPTION METHOD - It is possible to provide a radio communication terminal device and a radio transmission method which can improve reception performance of a CQI and a reference signal. A phase table storage unit stores a phase table which correlates the amount of cyclic shift to complex coefficients {w1, W2} to be multiplied on the reference signal. A complex coefficient multiplication unit reads out a complex coefficient corresponding to the amount of cyclic shift indicated by resource allocation information, from the phase table storage unit and multiplies the read-out complex coefficient on the reference signal so as to change the phase relationship between the reference signals in a slot. | 07-11-2013 |
20130223374 | TRANSMISSION APPARATUS AND METHOD FOR GENERATING REFERENCE SIGNAL - It is an object to provide a sequence allocating method that, while maintaining the number of Zadoff-Chu sequences to compose a sequence group, is configured to make it possible to reduce correlations between different sequential groups. This method includes the steps of setting a standard sequence with a standard sequence length (Nb) and a standard sequence number (rb) in a step (ST | 08-29-2013 |
20130258894 | TRANSMITTER, RECEIVER, TRANSMISSION METHOD, AND RECEPTION METHOD - Provided is a transmitter which improves the flexibility of SRS resource allocation without increasing the amount of signaling for notifying the cyclic shift amount. In the transmitter, with regard to each basic shift amount candidate group having a basic shift amount from 0 to N−1, a transmission control unit ( | 10-03-2013 |
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 |
20130315173 | INTEGRATED CIRCUIT FOR RADIO TRANSMISSION OF ACK/NACK SIGNAL - It is possible to improve the CQI reception performance even when a delay is caused in a propagation path, a transmission timing error is caused, or a residual interference is generated between cyclic shift amounts of different ZC sequences. For the second symbol and the sixth symbol of the ACK/NACK signal which are multiplexed by RS of CQI, (+, +) or (−, −) is applied to a partial sequence of the Walsh sequence. For RS of CQI transmitted from a mobile station, + is added as an RS phase of the second symbol and − is added as an RS phase of the sixth symbol. A base station ( | 11-28-2013 |
20130329543 | TRANSMISSION DEVICE, RECEIVING DEVICE, TRANSMISSION METHOD, AND RECEIVING METHOD - A transmission device includes reference signal generator ( | 12-12-2013 |
20130343294 | RADIO TRANSMISSION DEVICE AND RADIO COMMUNICATION METHOD - A radio transmission device and a radio communication method employ sequence length decision units which hold a correspondence in which one basic sequence length is set for a plurality of transmission bandwidths. The sequence length decision units acquire transmission bandwidth information and decide a sequence length corresponding to the acquired transmission bandwidth information. A decision is made as to which of the cyclic extension process or the truncation process is to be executed on a Zadoff-Chu sequence according to the sizes of the acquired transmission bandwidth information and the basic sequence length. Then, a difference between the transmission bandwidth and the basic sequence length, i.e., the number of possible cyclic extension/truncation symbols, is obtained. | 12-26-2013 |
20140098795 | TERMINAL DEVICE, BASE STATION DEVICE, AND COMMUNICATION METHOD - A terminal device is equipped with: a sequence determination unit that determines a sequence number with a different pattern than the assignment pattern for the sequence number assigned to the cell in which the host device resides; a reference signal generation unit that generates a reference signal for a sequence group corresponding to the sequence number that has been determined; and a wireless transmission unit that transmits the reference signal that has been generated to a base station. The sequence determination unit employs a configuration whereby, with the sequence number assigned to the cell in which the host device resides as a cell-specific sequence number, a dynamic offset which periodically changes over time and for which the same value is not consecutive is added to the cell-specific sequence number, thereby determining a sequence number which never overlaps with the cell-specific sequence number. | 04-10-2014 |
20140126479 | TERMINAL APPARATUS AND METHOD FOR TRANSMITTING A REFERENCE SIGNAL - Provided are a radio communication terminal apparatus and a radio transmission method by which intersymbol interference of DM-RS of a CoMP terminal and a Non-CoMP terminal can be reduced. A CoMP set setting unit ( | 05-08-2014 |
20140126510 | RECEIVER APPARATUS, TRANSMITTER APPARATUS, SETTING METHOD, AND DETERMINING METHOD - Provided is a receiver apparatus that can improve the flexibility of setting resource candidates used for transmitting a reference signal. In this apparatus, a setting unit ( | 05-08-2014 |
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 |
20140211715 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD - A wireless communication base station device, terminal device, and method have reduced signaling while maintaining high scheduling gain. A judgment unit pre-stores a correspondence between the number of code words and the number of clusters to reduce the maximum value for the number of clusters allocated to each terminal as the number of code words increases, and thus determines the maximum value for the number of clusters based on the number of code words acquired. Based on the number of code words for a transmission signal from a terminal, an estimated value for the reception quality, and the maximum value for the number of clusters that is output by the judgment unit, a scheduling unit schedules the allocation of the transmission signal transmitted by each terminal to a transmission band frequency (frequency resource) so as not to exceed the maximum value for the number of clusters. | 07-31-2014 |
20140219208 | COMMUNICATION APPARATUS AND RECEPTION METHOD - It is possible to provide a radio communication terminal device and a radio transmission method which can improve reception performance of a CQI and a reference signal. A phase table storage unit stores a phase table which correlates the amount of cyclic shift to complex coefficients {w | 08-07-2014 |
20140286260 | COMMUNICATION APPARATUS AND REFERENCE SIGNAL RECEIVING METHOD - Provided are a wireless communication apparatus and a reference signal generating method, wherein inter-cell interference is reduced inside and outside a CoMP set. A CoMP mode setting unit ( | 09-25-2014 |
20140286272 | INTEGRATED CIRCUIT FOR CONTROLLING A PROCESS - Provided is a cyclic shift sequence generation method which can prevent coming of an interference wave into a desired wave detection window even if a cyclic shift sequence has a high mutual correlation in different bandwidths, thereby improving a channel estimation accuracy in a base station. In this method, a cyclic shift sequence number to be allocated to a cell is decided in advance. Moreover, when the cyclic shift amount between cyclic shift sequences allocated in cells is Δ1 and the cyclic shift amount of the cyclic shift sequences allocated between the cells is Δ2, Δ1 and Δ2 are made different when generating a cyclic shift sequence. | 09-25-2014 |
20140307536 | TERMINAL AND COMMUNICATION METHOD THEREOF - A terminal and a communication method thereof whereby, even in a case of employing the asymmetric carrier aggregation system and further employing the MIMO transmission method for upstream channels, the error characteristic of control information can be prevented from being degraded. In the terminal, a transport signal forming unit forms transport signals by arranging, based on an arrangement rule, ACK/NACK and CQI in a plurality of layers. According to the arrangement rule, an error detection result is arranged, on a priority basis, in a layer that is different from a layer in which the channel quality information is arranged. In this way, the puncturing of CQI using ACK/NACK can be minimized, with the result that the error characteristic of control information can be prevented from being degraded. | 10-16-2014 |
20140341154 | TERMINAL APPARATUS AND COMMUNICATION METHOD THEREOF - This invention is directed to a terminal apparatus capable of preventing the degradation of reception quality of control information even in a case of employing SU-MIMO transmission system. A terminal ( | 11-20-2014 |
20140348119 | TERMINAL AND METHOD FOR TRANSMITTING A TRANSMISSION SIGNAL - Disclosed are a wireless communication base station device and a division number determination method that improve the frequency diversity effect while maintaining channel estimation accuracy regardless of the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. A determination unit determines the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. Here, the determination unit increases the number of divisions in the frequency domain of the transmission signal from the wireless communication terminal device as the number of pilot blocks included in the transmission signal increases. In addition, a scheduling unit schedules allocation to the frequency resources of the divided transmission signal according to the number of divisions determined by the determination unit. | 11-27-2014 |
20150036646 | COMMUNICATION APPARATUS AND RECEPTION METHOD - It is possible to provide a radio communication terminal device and a radio transmission method which can improve reception performance of a CQI and a reference signal. A phase table storage unit stores a phase table which correlates the amount of cyclic shift to complex coefficients {w1, w2} to be multiplied on the reference signal. A complex coefficient multiplication unit reads out a complex coefficient corresponding to the amount of cyclic shift indicated by resource allocation information, from the phase table storage unit and multiplies the read-out complex coefficient on the reference signal so as to change the phase relationship between the reference signals in a slot. | 02-05-2015 |
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 |
20150055617 | COMMUNICATION DEVICE AND INTEGRATED CIRCUIT - Provided is a radio communication base station device which can suppress a use amount of an SRS communication resource. In this device, a correlation rule setting unit ( | 02-26-2015 |
20150078151 | TERMINAL STATION APPARATUS, BASE STATION APPARATUS, TRANSMISSION METHOD AND CONTROL METHOD - A terminal apparatus is disclosed wherein even in a case of applying SU-MIMO and MU-MIMO at the same time, the inter-sequence interference in a plurality of pilot signals used by the same terminal can be suppressed to a low value, while the inter-sequence interference in pilot signal between terminals can be reduced. In this terminal apparatus: a pilot information deciding unit decides, based on allocation control information, Walsh sequences of the respective ones of first and second stream groups at least one of which includes a plurality of streams; and a pilot signal generating unit forms a transport signal by using the decided Walsh sequences to spread the streams included in the first and second stream groups. During this, Walsh sequences orthogonal to each other are established in the first and second stream groups, and users are allocated on a stream group-by-stream group basis. | 03-19-2015 |
20150085906 | TERMINAL APPARATUS AND SEQUENCE ASSIGNING METHOD - Provided is a sequence allocation method capable of reducing inter-cell interference of a reference signal when a ZC sequence is used as the reference signal in a mobile communication system. In the sequence allocation method, R×M sequences specified by a ZC sequence number r (r=1 to R) and a cyclic shift sequence number m (m=1 to M) are divided into a plurality of sequence groups X (X=1 to R) in accordance with the transmission band width of the reference signal, so that the ZC sequence is allocated to each cell in each sequence group unit. When it is assumed that R=9 and M=6, the number of sequences is 54. Each of the sequence groups is formed by two sequences. Accordingly, the number of sequence groups is 27. The 27 types of sequence groups are allocated to each cell. | 03-26-2015 |