Patent application number | Description | Published |
20090019338 | Communications device and wireless communications system - Turbo coding and decoding devices provide interleaving in the error correction coding process, which improves error correction capability. A turbo decoding device for decoding data obtained by performing error detection coding on a plurality of data blocks and further subjecting that data to turbo coding that includes interleaving in the coding process, comprises a rearrangement unit to perform interleaving between a first decoding a second decoding, an error detection unit to perform error detection processing for each block based on data after the first decoding, and an adjustment unit to adjust a likelihood indicated by data obtained after decoding in the first decoder but prior to the interleaving and corresponding to blocks evaluated as having no errors by the error detection unit. | 01-15-2009 |
20100138716 | METHOD AND APPARATUS FOR CONTROLLING TRANSMITTING, RECEIVING, AND RE-TRANSMISSION - The present invention relates to a method and apparatus that are capable of executing the error correction decoding process while controlling the increase in the amount of data that is stored in the receiving apparatus. There is provided a transmitting apparatus for transmitting the data to a receiving apparatus to execute the error correction decoding process using, for example, the received data and the re-transmitted data, comprising a transmitting data generating means for generating a first transmitting data by executing the rate matching process to a first part of the error correction coded data and generating a second transmitting data including at least the data not included in the first part by executing the rate matching process on the basis of the error correction coded data, and a transmitting means for executing the transmission of the second transmitting data as the re-transmission after the transmission of the first transmitting data. | 06-03-2010 |
20100278282 | TRANSMITTING APPARATUS WITH BIT ARRANGEMENT METHOD - A method of transmitting data including controlling generation of bit sequences to adjust an occupation rate occupied with predetermined bits included in a first data block, which is obtained by encoding first data, to be closer to an occupation rate occupied with predetermined bits included in a second data block, which is obtained by encoding second data. With regard to first bit positions of the predetermined bits, the first bit positions being distinguished from second bit positions based on an error tolerance resulting from a correspondence to a signal point on a phase plane. Wherein a sum of a number of the predetermined bits included in the first data block and the predetermined bits included in the second data block is less than a total number of the first bit positions. Also including performing multi-level modulation for transmission based on the generated bit sequences. | 11-04-2010 |
20110058625 | TRANSMITTING APPARATUS WITH BIT ARRANGEMENT METHOD - A method of transmitting data by transmitting apparatus, that includes controlling generation of bit sequences to adjust an occupation rate of systematic bits in a first data block including systematic bits and parity bits, which is obtained by encoding first data in a first encoding process, and is equal or closer to an occupation rate of systematic bits in a second data block including systematic bits and parity bits, which is obtained by encoding second data in a second encoding process, and to adjust an occupation rate of parity bits in the first data block that is closer to an occupation rate of parity bits in the second data block, in regard to first bit positions of the bit sequences generated using bits included in the first and second data blocks and performs multi-level modulation for transmission based on the generated bit sequences. | 03-10-2011 |
20110142167 | TRANSMITTING APPARATUS WITH BIT ARRANGEMENT METHOD - A transmitting apparatus, that includes a means for generating bit sequences to adjust an occupation rate occupied with predetermined bits included in a first data block, which is obtained by encoding first data in a first encoding process, to be equal or closer to an occupation rate occupied with predetermined bits included in a second data block, which is obtained by encoding second data in a second encoding process, in regard to first bit positions of the bit sequences generated using bits included in the first and second data blocks and a modulator for performing multi-level modulation for transmission based on the generated bit sequences. | 06-16-2011 |
20110142168 | TRANSMITTING APPARATUS WITH BIT ARRANGEMENT METHOD - A method of transmitting data that includes controlling generation of bit sequences to adjust an occupation rate occupied with predetermined bits included in a first data block, which is obtained by encoding first data in a first encoding process, to be equal or closer to an occupation rate occupied with predetermined bits included in a second data block, which is obtained by encoding second data in a second encoding process, in regard to first bit positions of the bit sequences generated using bits included in the first and second data blocks; and performing multi-level modulation for transmission based on the generated bit sequences. | 06-16-2011 |
20120108289 | RADIO COMMUNICATION APPARATUS - A radio communication apparatus that includes a receiver that accomplishes intermittent reception of information in a first mode, the information indicating a transmitting format used for a shared channel via which data is received and a transmitter that accomplishes intermittent transmission of quality information at a timing in the first mode, the quality information relating to the transmitting format; and a controller that sets in advance the timing of the intermittent transmission so as to become a given time before a timing of the intermittent reception. | 05-03-2012 |
20120322467 | WIRELESS COMMUNICATION SYSTEM, TRANSMITTER, RECEIVING APPARATUS, AND NOTIFICATION INFORMATION TRANSMISSION-RECEPTION METHOD - A receiving apparatus includes a storing unit that stores therein notification information transmitted from a base station, a receiving unit that receives, from among the notification information transmitted by the base station, revision history of change information related to the notification information, and an updating unit that updates the notification information stored in the storing unit on the basis of the change information contained in the revision history received by the receiving unit. | 12-20-2012 |
20120327761 | RECEIVING APPARATUS, RECEIVING METHOD, AND WIRELESS COMMUNICATION SYSTEM - A receiving apparatus includes a first detecting unit that performs error detection on a packet received from a transmitter, a second detecting unit that performs error detection on each block, of a predetermined size, into which the packet is divided, and a retransmission requesting unit that controls a retransmission request for the packet with respect to the transmitter on the basis of a detection result from the first detecting unit and a detection result from the second detecting unit. | 12-27-2012 |
20130007558 | ERROR CORRECTING CODE DECODING DEVICE, DECODING METHOD, AND MOBILE STATION APPARATUS - An error correcting code decoding device includes a first decoding circuit, a word-length reduction circuit configured to reduce bit lengths of a first external values corresponding to a plurality of bits obtained after decoding process performed by the first decoding circuit a first predetermined number of times and to reduce bit lengths of words included in word string, and a second decoding circuit configured to decode the bit string by executing a decoding process a second predetermined number of times for calculating second external values and posterior values of the bits included in the bit string in accordance with the word string including the words having the reduced bit lengths using the first external values having the reduced bit lengths as second prior probabilities that corresponding bits among the plurality of bits are the predetermined value. | 01-03-2013 |
20130012218 | MOBILE COMMUNICATION SYSTEM - A mobile communication system comprises a base station and a relay station to relay data transmitted/received between the base station and a mobile station. The base station includes a first scheduler to perform scheduling of initial transmission of the data transmitted/received between the base station and the mobile station via the relay station, and a first manager to manage predetermined wireless resources which are periodically used, as wireless resources used for the initial transmission of the data. The relay station includes a second scheduler configured to perform scheduling of transmission of a message for confirming necessity of retransmission of the data and retransmission of the data and a second manager configured to manage wireless resources used for the transmission of the message and the retransmission of the data. | 01-10-2013 |
20130095767 | RADIO COMMUNICATION METHOD, RADIO COMMUNICATION APPARATUS, AND RADIO COMMUNICATION SYSTEM - A first radio communication apparatus includes a controller and a transmitter. The controller determines timing capable of transmitting a control parameter used for a process for establishing connection to a second radio communication apparatus when the connection is not established between the first and second radio communication apparatus. The transmitter transmits a message including data different from the control parameter to the second radio communication apparatus at determined timing. The second radio communication apparatus includes a receiver and a data processing unit. The receiver receives from the first radio communication apparatus the message transmitted at timing at which the first radio communication apparatus is able to transmit the control parameter. The data processing unit extracts data included in the received message. | 04-18-2013 |
20130100906 | RADIO COMMUNICATION METHOD AND RADIO COMMUNICATION APPARATUS - A radio communication method for performing radio communication by using a plurality of frequency bands in a first radio communication apparatus and a second radio communication, the method including transmitting to the second radio communication apparatus a first channel state information request corresponding to each of the plurality of frequency band, by the first radio communication apparatus; and transmitting to the first radio communication apparatus an information relating to a channel state for the frequency band specified by the first channel state information request, when the second radio communication apparatus receives the first channel state information request, by the second radio communication apparatus. | 04-25-2013 |
20130137416 | WIRELESS COMMUNICATION SYSTEM, MANAGEMENT STATION, AND METHOD FOR MANAGING - In order to properly expel one or more mobile terminals from a cell that a wireless base station is accommodating, the management station includes at least one processor configured to obtain, for each of the plurality of mobile terminals, speed data indicating a moving speed of the mobile terminal; select one or more mobile terminals each having a moving speed, indicated by the speed data, satisfying a first criterion among the plurality of mobile terminals; and control the wireless base station such that the selected mobile terminals are out of communication with the cell. | 05-30-2013 |
20130223328 | RADIO COMMUNICATION METHOD, RELAY STATION AND MOBILE STATION - In a mobile communication system, a mobile station receives intermittently a channel transmitted by a first or second base station through a relay station. Herein, the relay station, before execution of a handover for switching a connection destination of its own station from the first base station to the second base station, transmits information on the second base station. The mobile station, based on the information on the second base station received from the relay station before the handover, controls a timing for receiving the channel from the relay station after the handover. | 08-29-2013 |
20130225175 | RADIO COMMUNICATION METHOD, RELAY STATION, MOBILE STATION, AND MOBILE COMMUNICATION SYSTEM - In a mobile communication system, a relay station connects to a first or second base station, and communicates with a mobile station at a timing corresponding to the destination base station. Before execution of a handover for switching a destination of the relay station from the first base station to the second base station, the relay station transmits a signal regarding the second base station. The mobile station synchronizes with the relay station after execution of the handover, on the basis of the signal regarding the second base station which is received from the relay station before the handover. | 08-29-2013 |
20130267223 | WIRELESS COMMUNICATION SYSTEM, RELAY STATION, BASE STATION, AND WIRELESS COMMUNICATION METHOD - A wireless communication system is provided in which a relay station relays wireless communication between a base station and a mobile station. The relay station includes an acquiring unit and a notifying unit. The acquiring unit acquires, from the base station that retains information on the mobile station used for the wireless communication, identification information on the base station. The notifying unit notifies the mobile station of the identification information acquired by the acquiring unit. Furthermore, the mobile station includes a reconnecting unit. When connection with the relay station is released, the reconnecting unit performs a reconnection request with respect to the base station that is identified by the identification information that is notified by the relay station. | 10-10-2013 |
20140079029 | RADIO COMMUNICATION APPARATUS - A radio communication system includes a mobile station configured to: intermittently receive information indicating a transmission format used for a shared channel via which data is received from a radio communication apparatus, intermittently transmit Channel Quality Indicator (CQI) information relating to the transmission format used for the shared channel in a first mode, set the timing of the intermittent transmission of the CQI information a given time before the reception of the information indicating a transmission format used for the shared channel, the CQI information being transmitted periodically, and switch from the first mode to a second mode in which the CQI information is transmitted more frequently than in the first mode; and the radio communication apparatus configured to communicate with the mobile station. | 03-20-2014 |