Patent application number | Description | Published |
20090305714 | Wireless Communication System, Wireless Communication Terminal, Base Station and Wireless Communication Method - Provided is a wireless communication system in which a plurality of channels are shared and one of the channels is adaptively allocated to a wireless communication terminal by a base station. The wireless communication terminal is provided with a channel requesting unit that requests the base station to allocate an individual control channel when a communication request is received from an upper control unit of its own terminal or the base station, and a state control unit that controls the state of its own terminal so that the state transits to an individual control channel connected state in which control information is transmitted/received by wirelessly connecting the individual control channel allocated from the base station. The base station is provided with a channel allocating unit that allocates one of a plurality of traffic channels as the individual control channel to be exclusively used for the wireless communication terminal in response to the request from the wireless communication terminal. | 12-10-2009 |
20100027506 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION TERMINAL AND CELL STATION, AND WIRELESS COMMUNICATION METHOD - The present invention relates to a wireless communication system for TDMA communication with use of one or more communication channels among at least one of a plurality of cell stations and a wireless communication terminal. The wireless communication terminal includes a link-channel-allocation requesting unit that transmits a link-channel allocation request signal upon handover without specifying a destination cell station, using a handover control channel included in the communication channels which is used for transmitting control information concerning handover and has a unique channel number in the wireless communication system. The one of the cell stations includes a link-channel allocating unit that transmits, to the wireless communication terminal, a link-channel allocation signal including link-channel allocation information using the handover control channel upon receiving the link-channel allocation request signal. | 02-04-2010 |
20100046446 | MOBILE COMMUNICATIONS SYSTEM, MOBILE STATION DEVICE, BASE STATION DEVICE AND CHANNEL ALLOCATION METHOD - Each mobile station device ( | 02-25-2010 |
20100074359 | Base Station and Communication Method - Improvement in utilization efficiency of traffic channels and voice quality in an OFDMA scheme is accomplished. A base station communicating which mobile stations by an OFDMA scheme using subchannels includes: a channel assigning unit | 03-25-2010 |
20100085881 | Wireless Communication System, Wireless Communication Terminal, Base Station and Wireless Communication Method - Provided is a wireless communication system for performing communication using a shared control channel that can be used in a predetermined period for each of a plurality of base stations and a plurality of traffic channels that can be adaptively allocated to each of a plurality of wireless communication terminals. The wireless communication terminal is provided with a channel requesting unit that requests the base station to allocate an individual control channel through the shared control channel and a communication control unit that performs control information communication by wirelessly connecting the individual control channel allocated from the base station. The base station is provided with a channel allocating unit that allocates one of the traffic channels as the individual control channel to be exclusively used for the wireless communication terminal when the request of individual control channel allocation is received from the wireless communication terminal through the shared control channel. | 04-08-2010 |
20100091722 | COMMUNICATION SYSTEM, BASE STATION, TERMINAL, AND COMMUNICATION METHOD - A multiservice is implemented by connecting one base station and one terminal via one wireless link. | 04-15-2010 |
20100128684 | Base Station Apparatus and Wireless Communication Method - A base station apparatus which conducts a packet communication with a wireless communication terminal includes: a retransmission request detection unit which detects a retransmission request from the wireless communication terminal; a bandwidth assignment unit which assigns a communication bandwidth applied to the packet communication; a modulation class calculation portion, based on both bandwidth information regarding the bandwidth assigned by the bandwidth assignment unit and a data amount of packets corresponding to the retransmission request, calculates a modulation class applied to a retransmission in order to adjust a number of retransmitted packets to be the same as a number of previously transmitted packets; a modulation class determination unit which determines whether or not the modulation class is lower than a modulation class applied to a previous packet transmission; and a retransmission unit which retransmits packets corresponding to the retransmission request based on the determination result regarding the modulation class. | 05-27-2010 |
Patent application number | Description | Published |
20080229164 | MEMORY CARD AND MEMORY CONTROLLER - A memory card includes a non-volatile memory, a memory controller for controlling the operation of the memory card. The memory controller is capable of providing an interface with outside according to a predetermined protocol, and performs error detection and correction of the memory information at regular time intervals or at the timing of connection of electric power supply, independently of reading out the memory information according to external access request. Therefore, it is possible to improve reliability of data retention in the non-volatile memory without the host device reading out the memory information from the non-volatile memory of the memory card. | 09-18-2008 |
20090019210 | NONVOLATILE MEMORY APPARATUS - The service life of memory cards is to be substantially elongated against the occurrence of faulty blocks. A control logic searches blocks in a nonvolatile memory cell array for any acquired fault on the basis of a fault-inviting code in a management information section. If any faulty block is detected, the faulty block will be subjected to write/read comparison of data to judge whether or not the data in the block are normal. Any block determined to be normal will undergo rewriting of its fault-inviting code and registered as a normal block. Further, the registered block is stored into a write management table in the management area as a writable block. This enables an essentially normal block judged faulty on account of an erratic error or some other reason to be restored. | 01-15-2009 |
20100054069 | MEMORY SYSTEM - The present invention provides a memory system which contributes to improvement in efficiency of a data process accompanying a memory access. A memory system has a rewritable nonvolatile memory, a buffer memory, and a controller. The controller controls, in response to an access request from an external apparatus, first data transfer between the controller and the external apparatus, second data transfer between the controller and the nonvolatile memory, and third data transfer between the controller and the buffer memory, controls transfer from the controller to the buffer memory in the third data transfer and transfer from the buffer memory to the controller in a time sharing manner, and enables the first data transfer or the second data transfer to be performed in parallel with the transfer carried out in the time sharing manner. | 03-04-2010 |
20120176842 | Memory System - The present invention provides a memory system which contributes to improvement in efficiency of a data process accompanying a memory access. A memory system has a rewritable nonvolatile memory, a buffer memory, and a controller. The controller controls, in response to an access request from an external apparatus, first data transfer between the controller and the external apparatus, second data transfer between the controller and the nonvolatile memory, and third data transfer between the controller and the buffer memory, controls transfer from the controller to the buffer memory in the third data transfer and transfer from the buffer memory to the controller in a time sharing manner, and enables the first data transfer or the second data transfer to be performed in parallel with the transfer carried out in the time sharing manner. | 07-12-2012 |
20140365712 | MEMORY SYSTEM - The present invention provides a memory system which contributes to improvement in efficiency of a data process accompanying a memory access. A memory system has a rewritable nonvolatile memory, a buffer memory, and a controller. The controller controls, in response to an access request from an external apparatus, first data transfer between the controller and the external apparatus, second data transfer between the controller and the nonvolatile memory, and third data transfer between the controller and the buffer memory, controls transfer from the controller to the buffer memory in the third data transfer and transfer from the buffer memory to the controller in a time sharing manner, and enables the first data transfer or the second data transfer to be performed in parallel with the transfer carried out in the time sharing manner. | 12-11-2014 |