| Patent application number | Description | Published |
|---|
| 20080285514 | Wireless Communication Apparatus, Method and Program Storage Medium - A wireless communication apparatus having a wireless communication function capable of using a plurality of transmission rates. The wireless communication apparatus includes utilization-factor calculation means for calculating a utilization factor of a wireless transmission path through which wireless communication is performed using the wireless communication function; and determination means for determining a transmission rate at least on the basis of the utilization factor calculated by the utilization-factor calculation means. | 11-20-2008 |
| 20090086696 | Wireless Transmission Device, Wireless Transmission Method, Wireless Communication System, and Program - A wireless transmission device according to the present invention includes a packet transmission portion, a Block ACK receiving portion, a retransmission control portion, and a transmission rate revision portion. The packet transmission portion transmits a plurality of packets to a receiving terminal. The Block ACK receiving portion receives a Block ACK that is received from the receiving terminal after the plurality of the packets are transmitted. The retransmission control portion determines a plurality of the packets to be consecutively transmitted, based on the Block ACK. The transmission rate revision portion revises a transmission rate that is used when the plurality of the packets are consecutively transmitted from a value that is normally used in accordance with a wireless channel quality. | 04-02-2009 |
| 20100040007 | Wireless Communication Device, Communication System, and Communication Control Method, and Program - A wireless communication device includes a control unit for performing a processing on communication data and a memory storing the communication data, in which the control unit performs a processing on data received via a direct link path and a path via a relay point, stores the data received via the respective paths in plural reorder buffers corresponding to the communication paths set in the memory, after a communication path switch decision processing, stores data from a new channel in a new channel reorder buffer and prohibits transfer to a higher-level layer, and when data indicating a trailing end frame is received from an existing channel, or a stand-by time elapses, or the data stored in the reorder buffer for the new channel reaches a specified threshold, performs a transfer processing for the data stored in the reorder buffer for the new channel to the higher-level layer. | 02-18-2010 |
| 20100046430 | WIRELESS COMMUNICATION DEVICE, COMMUNICATION SYSTEM, COMMUNICATION CONTROL METHOD, AND PROGRAM - A wireless communication device includes: a control unit configured to control communication data; and memory configured to store communication data; wherein the control unit performs processing of setting a re-order buffer corresponding to a source address, for storing received data in increments of source address in the memory, storing received packets from a single data source in the re-order buffer corresponding to a source address, and arraying the packet order following sequence numbers set to the received packets. | 02-25-2010 |
| 20100254361 | WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION METHOD AND PROGRAM - Provided is a wireless communication device which includes a function information transmitting unit for transmitting, via a wireless communication network, function information relating to a function of the wireless communication device, a function information receiving unit for receiving function information transmitted from another device, a function information comparison unit for comparing the function information of the wireless communication device and the function information received from such other device, and a function determination unit for determining which of the wireless communication device and such other device is to play a function of an access point, based on a result of the comparison by the function information comparison unit. | 10-07-2010 |
| 20100260158 | WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION METHOD AND PROGRAM - Provided is a wireless communication device which includes a notification information transmitting unit for transmitting, via a wireless communication network, notification information of the wireless communication device, a notification information receiving unit for receiving notification information transmitted from another device, a frequency switching unit for successively switching, at random cycles, a frequency at which the notification information is transmitted or a frequency at which the notification information is received, and a transmission processing unit for performing a data transmission process after transmitting or receiving an acknowledgement to the notification information to/from such other device. | 10-14-2010 |
| 20100272083 | WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION METHOD, AND PROGRAM - There is provided a wireless communication device including a control-message creation/transmission-instruction unit which sends notification information via a wireless communication network and also sends response information in the case of receiving notification information sent from another device, a reception/interpretation processing unit which receives, from another device which has received the notification information of the wireless communication device, response information of such other device and also receives the notification information sent from such other device, and an operation mode determination unit which determines, based on operation mode determination information included in the notification information of such other device or the response information of such other device, that the wireless communication device is caused to operate as one of a master device and a slave device. | 10-28-2010 |
| 20110116415 | WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION SYSTEM, PROGRAM AND WIRELESS COMMUNICATION METHOD - A first station for communicating with a second station is disclosed. The first station may include a storage unit configured to store relationship information defining a communication relationship between the first station and the second station. The first station may also include a communication unit configured to communicate with the second station and with an access point. The communication relationship may be maintained when the communication unit begins communicating with the access point. | 05-19-2011 |
| 20110116425 | RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION METHOD, AND PROGRAM - Provided is a radio communication system including a first radio communication device, and a second radio communication device that communicates with a radio communication device operating as a master unit and being connected, wherein the second radio communication device includes a communication unit that communicates with the radio communication device being connected, and a control unit that controls the communication unit to send a response packet to the first radio communication device when a response request packet broadcasted from the first radio communication device is received by the communication unit. | 05-19-2011 |
| 20110122835 | RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION METHOD, AND PROGRAM - There is provided a radio communication device including a reception unit which receives information indicating a connection state or a communication capability of another radio communication device which the radio communication device attempts to connect to, and a selection unit which selects, depending on the information received by the reception unit, which communication is to be performed from among first communication in which a direct connection to such other radio communication device is established and direct communication with such other radio communication device is performed, second communication in which a connection to such other radio communication device via a base station is established and direct communication with such other radio communication device is performed, and third communication in which a connection to such other radio communication device via the base station is established and indirect communication with such other radio communication device via the base station is performed. | 05-26-2011 |
| 20110128946 | RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION SYSTEM, PROGRAM, AND RADIO COMMUNICATION METHOD - Provided is a radio communication device which includes a communication unit that communicates with a connected radio communication device operating as a master unit, and a control unit that, when a prescribed inquiry packet sent from another radio communication device is received by the communication unit, controls the communication unit to send a response packet containing service information indicating a service with which the radio communication device is compatible to said another radio communication device. | 06-02-2011 |
| 20110149816 | WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION METHOD, PROGRAM, AND WIRELESS COMMUNICATION SYSTEM - Provided is a wireless communication device including a communication unit that communicates with another wireless communication device, a role determination unit that determines a role of either acting as a group owner or a client based on information of said another wireless communication device received by the communication unit, and a communication control unit that controls communication for forming a wireless communication group with said another wireless communication device, as a device that plays the role determined by the role determination unit. | 06-23-2011 |
| 20110167106 | COMMUNICATION TERMINAL APPARATUS, PROGRAM, INFORMATION PROCESSING SYSTEM, AND METADATA PROVIDING SERVER - There is provided a communication terminal apparatus including a position information acquisition section which acquires position information indicating a current position, a velocity calculation section which calculates a moving velocity based on variations in amount and time of the position information acquired by the position information acquisition section, and a metadata acquisition section which determines a reference point to be a reference of an acquisition area of position metadata based on the position information and the moving velocity, determines an area size indicating a size of the acquisition area depending on the moving velocity, and acquires position metadata within an acquisition area specified based on the reference point and the area size from a metadata providing server that provides position metadata. | 07-07-2011 |
