Patent application number | Description | Published |
20080232517 | Radio communications system, receiver and receiving method - A mobile station obtains information indicating a system band to be employed from a base station before starting a process of identifying a base station ID. In the identification process, the mobile station obtains a cross-correlation value by coherent integration of pilot signals and scrambling codes which may be candidates by using a synchronization signal as a phase reference, in a channel band for synchronization, and obtains a cross-correlation value by non-coherent integration of the pilot signals and the scrambling codes by using a phase difference between sub-carriers in a frequency direction, in the system band other than the channel band for synchronization. Then, the mobile station merges these cross-correlation values, detects a scrambling code from which a maximum cross-correlation value can be obtained, and identifies the base station ID. | 09-25-2008 |
20080310544 | Digital communications system - In a base station, after CRC is added to transmission data as a detection code, the transmission data is subjected to error-correcting coding using a convolutional code based on tail biting, divided into four frames of P-BCH and transmitted. For this reason, at a mobile station, even if reception (synthesis) is started from any frame of P-BCH represented as (b- | 12-18-2008 |
20080311854 | Radio communications system, mobile radio terminal and radio comunications method - In sequence S | 12-18-2008 |
20090011764 | Mobile communications system and mobile radio terminal - Mobile station notifies base station of identification information of base stations searched by searching as a search list, and the base station notifies the mobile station of base stations which are not regarded as prestored neighbor base stations and base stations which are in an unusable base station list, of the base stations in the notified search list, as an NG list. If necessity of handover is increased, the mobile station receiving the notification executes handover to base stations (for example, base station) in the search list other than the base stations included in the NG list. | 01-08-2009 |
20090170442 | MOBILE RADIO TERMINAL AND MOBILE COMMUNICATION SYSTEM - Each of a mobile station and a base station stores a Wideband CQI table and a Subband CQI table. At the mobile station, a control unit transmits a CQI report value indicating Wideband CQI, and an index (Index S) indicating a differential value of a Diff reference value based on the CQI report value and Subband CQI, on the basis of the tables. In addition, the control unit makes the Diff reference value variable to prevent an expression amount of the index from being damaged if the Wideband CQI report value is in a range close to an upper lit or a lower limit of the Wideband CQI table. | 07-02-2009 |
20090170500 | RADIO APPARATUS AND RADIO COMMUNICATION METHOD - A controller selects M resource blocks having most preferable CQI values from Ncqi resource blocks on the basis of the reception signal qualities of the Ncqi resource blocks measured by a reception signal quality measuring unit. The controller then obtains the position information of the M resource blocks and the average of the M resource blocks, and outputs them as items of CQI information to a CQI channel generator. When performing best-effort data communication, the controller sets parameter M=Ma. When performing low-rate communication with a small delay, the controller sets parameter M=Mb (=Ncqi−Ma) to perform scheduling with a high degree of freedom. | 07-02-2009 |
20090239524 | WIRELESS COMMUNICATION TERMINAL AND METHOD - A wireless communication terminal includes a measuring unit configured to measure each of channel qualities of resource blocks that a base station can allocate, a generating unit configured to divide the resource blocks into a plurality of groups, to generate quality data representing the channel qualities of a prescribed number of resource blocks included in each of the groups, which have relatively high channel quality, and to generate position data representing the positions which the resource blocks which have relatively high channel quality take in each of the groups, an encoding unit configured to encode the quality data and the position data to obtain encoded data, a modulation unit configured to modulate the encoded data to obtain a modulated signal, and a transmitting unit configured to transmit the modulated signal to the base station. | 09-24-2009 |
20100002678 | MOBILE RADIO TERMINAL AND RADIO COMMUNICATION METHOD - A transmitter executes the transmission using the synchronization signal in which a plurality of blocks formed of the synchronization code sequences different from each other are aligned in the order changed in the former part and the latter part while a receiver comprises the delay detection circuit corresponding to the delayed correlation base system and the replica base detection circuit corresponding to the replica base system corresponding to the synchronization signal, to execute the synchronization detection selectively in the replica base system or the delayed correlation base system. | 01-07-2010 |
20100002782 | RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD - In an OFDM cellular system, a power density of a phase reference signal of a time frame used in an initial synchronization process (time frame including a system information notification signal, or a time frame in the vicinity thereof), in a channel band for initial synchronization, is more increased than that of the other time frame. | 01-07-2010 |
20100184430 | MOBILE WIRELESS TERMINAL APPARATUS AND BASE STATION SEARCH METHOD - A terminal control unit controls a 1× reception signal process unit, searches for a base station which supports a 1× method, and starts wait for occurrence of signal reception. Then, the terminal control unit periodically executes a nearby base station measuring process, controls the 1× reception signal process unit, and searches for a nearby base station which supports the 1× method. On the other hand, as regards a base station which supports an LTE method, an LTE reception signal process unit is activated to execute a search only in the case where a base station supporting the 1× method, which is used for signal reception wait, does not support the LTE method. | 07-22-2010 |
20100319055 | RADIO COMMUNICATION APPARATUS AND RADIO COMMUNICATION METHOD - A radio communication apparatus executes communication by establishing a communication link according to a security level with other device. The radio communication apparatus sets a security level according to a type of service, and discriminates whether the security level is necessary for the communication with the other device. If the security level is necessary, the communication link according to the security level is established. If the security level is not necessary, security level is lowered and the communication link according to the lowered security level is established. | 12-16-2010 |