Patent application number | Description | Published |
20090168689 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION METHOD, AND PROGRAM - A wireless communication system is provided that includes a first wireless communication device, a second wireless communication device, and a base station. The first and second wireless communication devices perform one of indirect communication via the base station and direct communication not passing via the base station. The first wireless communication device obtains the type of communication function with which the second wireless communication device is compatible, and transmits a data frame using at least one of the communication functions with which both the first and second wireless communication devices are compatible. The second wireless communication device measures communication quality of the data frame transmitted from the first wireless communication device for each communication function used. One of the first wireless communication device and the second wireless communication device, based on the communication quality, determines whether to perform one of the indirect communication and the direct communication. | 07-02-2009 |
20090168736 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION METHOD, AND PROGRAM - A wireless communication system is provided that includes a first wireless communication device, a second wireless communication device, and a base station that relays wireless communication between the first and second wireless communication devices. The first wireless communication device is capable of direct communication with another wireless communication device, and transmits a first data frame of a particular frame type to the second wireless communication device via the base station. If the second wireless communication device is capable of the direct communication, when receiving the first data frame of the particular frame type, the second wireless communication device transmits a second data frame of the particular frame type via the base station. When the first wireless communication device receives the second data frame from the second wireless communication device, it determines that the second wireless communication device is capable of the direct communication. | 07-02-2009 |
20090268653 | Wireless Communication System, Wireless Communication Apparatus, Wireless Communication Method, and Program - A wireless communication apparatus according to the invention includes a first wireless communication apparatus (STA1) which transmits search data to a second wireless communication apparatus (STA2) connected through an access point in a wireless communication network and determines whether a direct link setup to the second wireless communication apparatus (STA2) is possible based on search response data returned from the second wireless communication apparatus (STA2), and the second wireless communication apparatus (STA2) which receives the search data and transmits the search response data to the first wireless communication apparatus (STA1) when the second wireless communication apparatus (STA2) is compliant with the direct link setup. | 10-29-2009 |
20090290521 | RADIO COMMUNICATION APPARATUS, RADIO COMMUNICATION METHOD, PROGRAM AND RADIO COMMUNICATION SYSTEM - A radio communication apparatus, including a communication control part that controls direct communication or relay communication via a base station with other radio communication apparatuses, a data generation part that generates a mode transition notification to notify the other radio communication apparatuses, which are targets of the direct communication, of a transition to a power thrifty mode or a switching request, notification to request switching from the direct communication to the relay communication via the base station, and the mode transition notification to the base station, and a mode control part that causes the transition of an operation mode to the power thrifty mode after all responses to the mode transition notification and the switching request notification are received. | 11-26-2009 |
20100039982 | Wireless Communication Device, Communication System, Communication Control Method, and Program - A wireless communication device includes a control unit that controls data communication, and a memory that stores communication data. The control unit controls a switch between a direct link path that is a direct communication path with a communication party, and a relay-point-routed path that is a communication path routed via a relay point. The control unit transmits a communication path switch request to the communication party, and on condition of reception of an acceptance response from the communication party, the control unit starts data communication using a switched communication path. | 02-18-2010 |
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 |
20110243006 | Wireless communicaton system, wireless communication device and wireless communication method, and computer prorgram - A wireless communication system, wherein packet transmission operations are carried out in an infrastructure mode, includes: a first terminal station serving as a data transmission source; a second terminal station serving as a data receiving destination; and a control station configured to contain each terminal station and relay a packet transmitted between the two terminal stations; wherein the first terminal station transmits a packet addressed to the second terminal station via the control station, and detects that the second terminal station is within range capable of a direct link, based on the first terminal station receiving a confirmation response packet replied from the second terminal station, the confirmation response packet being replied from the second terminal station upon a predetermined period of time having passed from the time of the control station transferring the packet to the second terminal station address. | 10-06-2011 |
20120155518 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - [Object] To prevent or reduce the degradation in transmission characteristics caused by fast fading (fluorescent lamp interference) to achieve optimized throughput. | 06-21-2012 |