Patent application number | Description | Published |
20080301253 | COMMUNICATION METHOD, COMMUNICATION APPARATUS, INTEGRATED CIRCUIT AND CIRCUIT MODULE - A communication method in a communication system which includes a master apparatus and plural slave apparatuses including at least first, second and third slave apparatuses, that are connected to communication medium and are associated with plural cyclic slots including at least first and second slots for triggering data transmission after a latency time, wherein data transmissions of the first and the second slave apparatuses are triggered by the first slot; and data transmission of the third slave apparatus is triggered by the second slot, the method including: sensing the communication medium by the master apparatus; and modifying, by the master apparatus, the first slave apparatus so as to trigger the data transmission of the first slave apparatus by a third slot which differs from the first and the second slots when the data transmission of the first slave apparatus triggered by the first slot is sensed in the sensing process. | 12-04-2008 |
20090034647 | TRANSMITTING DEVICE, WIRELESS COMMUNICATION SYSTEM AND TRANSMITTING METHOD - At a time T | 02-05-2009 |
20090097498 | COMMUNICATION METHOD, COMMUNICATION APPARATUS, AND INTEGRATED CIRCUIT - A communication apparatus for communicating by commonly sharing a transmission channel with another communication apparatus which performs a data transmission, comprising: a transmitting unit which transmits first data at first timing and second data at second timing subsequent to the first timing to the transmission channel; and an information adding unit which adds time slot information to the first data, the time slot information indicating a time slot during which the second data is transmitted prior to the data transmission performed by the other communication apparatus. | 04-16-2009 |
20090135972 | INTERFERING SIGNAL CHARACTERIZING QUANTITY STORING METHOD AND DEVICE, INTERFERING SIGNAL CHARACTERIZING QUANTITY ACQUIRING METHOD AND DEVICE, AND INTERFERING SIGNAL SUPPRESSING METHOD AND DEVICE - An object is to identify interfering signals coming at random timings from different radio stations. In order to attain this object, a method for storing the characterizing quantity of an interfering signal included in a received signal comprises a characterizing quantity calculation step of calculating the characterizing quantity of the received signal; a received signal determination step of determining a probability that a desired signal is included in the received signal, and determining that the received signal is an interfering signal when determining that there is no probability that the desired signal is included in the received signal; and an interfering signal characterizing quantity storage step of storing the characterizing quantity of the received signal as an interfering signal characterizing quantity when it is determined at the received signal determination step that there is no probability that the desired signal is included in the received signal. | 05-28-2009 |
20090141836 | RECEPTION DEVICE - A reception device according to the present invention receives a transmission frame including a synchronization symbol string, having a synchronization symbol repeated multiple times, inserted before a data symbol string. The synchronization symbol is obtained by synthesizing a plurality of sub band symbols which are mutually orthogonal and having different carrier frequencies. The carrier frequencies of the sub band symbols are located at an equal predetermined frequency interval. The synchronization symbol includes a repeated synchronization pattern. The reception device detects a rough carrier frequency error from a phase difference of a synchronization pattern correlation value to correct the frequency, and then detects a residual frequency error from an inter-symbol phase difference of each sub band to correct the frequency. The reception device detects a sampling clock frequency error from an inter-sub band phase difference to correct the frequency. Thus, the demodulation error of the data symbol is reduced. | 06-04-2009 |
20090147893 | INTERFERENCE SUPPRESSION METHOD AND INTERFERENCE SUPPRESSION DEVICE - A reception station | 06-11-2009 |
20090296591 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - When communicating with a second wireless station, a first wireless station judges, based on link-related information received form the second wireless station and link-related information extracted from a signal transmitted by a fourth wireless station, whether a transmission link from the third wireless station to the fourth wireless station and a transmission link from the first wireless station to the second wireless station can be concurrently established without interference with each other. If judging affirmatively, the first wireless station transmits a signal to the second wireless station in synchronization with a signal transmitted by the third wireless station to the fourth wireless station. Preferably, when the first wireless station having a concurrent transmission control function communicates with the second wireless station having a interference reduction function, the first wireless station controls the interference reduction function of the second wireless station based on the link-related information received from the second wireless station and interference information, such that the transmission link from the third wireless station to the fourth wireless station and the transmission link from the first wireless station to the second wireless station can be established at the same time without interference with each other. If judging that the concurrent transmission is available, the first wireless station transmits a signal to the second wireless station according to a timing that overlaps transmission of a signal from the third wireless station to the fourth wireless station. | 12-03-2009 |
20100158039 | COMMUNICATION METHOD AND COMMUNICATION DEVICE - A communication method for performing a communication among a plurality of communication devices sharing a communication band, includes a first step of transmitting notification signal during a first period to notify information for arbitrating the communication device capable of performing data transmission during a second period subsequent to the first period, and a second step of transmitting data from the communication device, capable of performing the data transmission during the second period based on the notification signal transmitted during the first period, in specific period in the second period allocated to the data transmitted from the communication device. | 06-24-2010 |
20100195569 | COMMUNICATION TERMINAL DEVICE AND COMMUNICATION METHOD - Provided is a communication terminal device that reduces, in a network using a power line, the percentage of bands consumed for transmission of control packets in the bands consumed for all the communication, so as to ensure transmission of data intended to be transmitted. A PLC terminal F | 08-05-2010 |
20100220593 | COMMUNICATION TERMINAL DEVICE AND COMMUNICATION CONTROL METHOD - Each of PLC modems | 09-02-2010 |
20120020257 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - When communicating with a second wireless station, a first wireless station judges, based on link-related information received from the second wireless station and link-related information extracted from a signal transmitted by a fourth wireless station, whether a transmission link from the third wireless station to the fourth wireless station and a transmission link from the first wireless station to the second wireless station can be concurrently established without interference with each other. If judging affirmatively, the first wireless station transmits a signal to the second wireless station in synchronization with a signal transmitted by the third wireless station to the fourth wireless station. | 01-26-2012 |