Patent application number | Description | Published |
20080227403 | WIRELESS COMMUNICATION BASE STATION DEVICE AND WIRELESS COMMUNICATION METHOD ALLOWING USE OF PLURALITY OF COMMUNICATION SCHEMES - A wireless communication base station device uses first and second wireless communication schemes. The device includes a command transmitting section and a terminal detecting section. The command transmitting section generates a shift command for a shift from the first wireless communication scheme to the second wireless communication scheme. The command transmitting section transmits the shift command to a wireless communication terminal. The first wireless communication scheme uses a frequency bandwidth different from that used in the second wireless communication scheme. The terminal detecting section, after the transmission of the shift command, searches for a wireless communication terminal having failed to shift from the first wireless communication scheme to the second wireless communication scheme. The terminal detecting section, if the wireless communication terminal having failed in the shift is detected, instructs the command transmitting section to transmit the shift command again. | 09-18-2008 |
20090092110 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD USING VARIABLE TRANSMISSION RATE - A wireless communication apparatus includes a transmission section and a control section. The transmission section transmits data using wireless communication. The control section controls a transmission rate for the transmission section. The control section limits data size of data to be transmitted to at most a prescribed value and requests a transmission acknowledgement, during a period from immediately after a change in the transmission rate until number of times that the transmission section transmits data reaches a prescribed number of times. | 04-09-2009 |
20090232053 | WIRELESS COMMUNICATION APPARATUS HAVING ACKNOWLEDGEMENT FUNCTION AND WIRELESS COMMUNICATION METHOD - A wireless communication apparatus includes a reception unit, an information management unit, and a transmission unit. The reception unit receives data including a plurality of data frames. The data frames are transmitted from an identical data source and managed by an identical traffic identifier. The information management unit retains acknowledgement information to perform an acknowledgement. The information management unit discards an already-retaining acknowledgement information when the data is newly received. The transmission unit performs the acknowledgement to the data source of the data using the acknowledgement information. The transmission unit performs the acknowledgement to the data corresponding to the acknowledgement information irrespective of a request of the acknowledgement from the data source when the information management unit discards the acknowledgement information or when a prediction on the discard of the acknowledgement information is made. | 09-17-2009 |
20100085950 | WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD - A wireless communication device includes a physical layer protocol processor which can transmit and receive data by first to Nth communication schemes, where ith communication scheme has compatibility with the first to (i−1)th communication scheme. A first controller generates a first frame for forbidding communication by the first to Nth communication schemes for a first period, and orders the physical layer protocol processor to transmit the first frame by the first communication scheme. A second controller generates a second frame for lifting the forbiddance on communication, and orders the physical layer protocol processor to transmit the second frame by a jth communication scheme. A third controller generates a third frame for forbidding communication by a (j+1)th to Nth communication schemes for a second period, and orders the physical layer protocol processor to transmit the third frame by the (j+1)th communication scheme. | 04-08-2010 |
20100329231 | WIRELESS COMMUNICATION APPARATUS WITH PHYSICAL LAYER PROCESSING MODULE AND MAC LAYER PROCESSING MODULE AND ITS COMMUNICATION METHOD - A wireless communication apparatus includes a first module, a second module, an inhibit module, a calculation module, and a control module. The first module constitutes a first system. The first system transmits and receives first data to and from a first device. The second module constitutes a second system. The second system transmits and receives second data to and from a second device in each interval time-divided with determined transmission timing. The inhibit module generates inhibit periods for preventing the first module from communicating by use of the first data. The calculation module calculates an occupation time required for the transmission and reception of the first data. The control module compares the period between the inhibit periods adjacent to one another with the occupation time and, according to the comparison result, instructs the first device to stop or delay the transmission of the first data. | 12-30-2010 |
20120069828 | WIRELESS COMMUNICATION DEVICE AND COMMUNICATION METHOD THEREOF - According to one embodiment, a wireless communication device includes a first transmitting/receiving unit, a first physical processor, and a first MAC processor. The first transmitting/receiving unit transmits one first wireless signal and receives a second wireless signal by a first wireless communication method using a frequency band with a certain bandwidth. The first physical processor decodes the second wireless signal to obtain a frame and encodes a frame of the first wireless signal to be transmitted. The first MAC processor supplies a control frame generated by embedding a first frame to a MAC header of a second frame to the physical processor as the frame. The first frame is recognizable by the first wireless communication method and a second wireless communication method. The second frame is recognizable by the first wireless communication method but is not recognizable by the second wireless communication method. | 03-22-2012 |
20130007393 | MEMORY DEVICE - According to one embodiment, a memory device includes a semiconductor memory, a memory controller which controls the semiconductor memory according to a request from outside the device, a radio section for wireless communication, and a controller. The controller manages storing data in the device according to a procedure for protecting copyright, obtains the latest version of a parameter for protecting copyright which can be updated from outside the device via the radio section, includes a comparator which compares the parameter stored in the device with the latest version of the parameter, and includes an update manager which updates the stored parameter to the latest version of the parameter when they are different. | 01-03-2013 |
20130094492 | WIRELESS COMMUNICATION APPARATUS WITH PHYSICAL LAYER PROCESSING MODULE AND MAC LAYER PROCESSING MODULE AND ITS COMMUNICATION METHOD - A wireless communication apparatus includes a first module, a second module, an inhibit module, a calculation module, and a control module. The first module constitutes a first system. The first system transmits and receives first data to and from a first device. The second module constitutes a second system. The second system transmits and receives second data to and from a second device in each interval time-divided with determined transmission timing. The inhibit module generates inhibit periods for preventing the first module from communicating by use of the first data. The calculation module calculates an occupation time required for the transmission and reception of the first data. The control module compares the period between the inhibit periods adjacent to one another with the occupation time and, according to the comparison result, instructs the first device to stop or delay the transmission of the first data. | 04-18-2013 |