Patent application number | Description | Published |
20090010199 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A wireless communication apparatus having a relay function comprises a memory to store an address of a first wireless communication apparatus connected to the wireless communication apparatus and having a relay function, and a transmitting unit configured to transmit a first relay frame addressed to the first wireless communication apparatus, the first relay frame including a first address field prepared for a final destination address, an address of a second communication apparatus not connected to the wireless communication apparatus being set in the first address field, and a second address field prepared for an address of a third wireless communication apparatus connecting the second communication apparatus and having a relay function, one of an address except for the address of the third wireless communication apparatus and a specific value being set in the second address field. | 01-08-2009 |
20090022132 | WIRELESS COMMUNICATION SYSTEM AND WIRELESS TERMINAL - A wireless communication system includes first and second wireless terminals capable of performing transmission by at least one of a first transmission scheme and a second transmission scheme. The first wireless terminal performs transmission of a first frame to the second wireless terminal by using the second transmission scheme. The second wireless terminal communicates with the first wireless terminal to notify the first wireless terminal of information associated with a status of the reception of the first frame transmitted from the first wireless terminal by using the first transmission scheme. | 01-22-2009 |
20090147761 | WIRELESS COMMUNICATION SYSTEM AND WIRELESS STATION - A station determines the presence/absence of directional beam control in an access point, on the basis of received power measured when data transmitted from the access point are received, and the type of the received data. In accordance with the result of this determination, the station controls transmitting power to transmit data to the access point. | 06-11-2009 |
20090175447 | COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND COMMUNICATION METHOD - In a communication system, a first wireless communication apparatuses belonging to a communication group receives a connection request frame including a notifying security level from a second communication apparatus outside of the communication group. The first communication apparatus stores a reference security level peculiar to the communication group, which is selected from security levels depending on one of encryption methods including non-encryption and encryption strengths. In the first communication apparatus, the notifying security level is compared with the reference level, and a response frame including one of a connect rejection and a connection permission is described, is generated and transferred to the second communication apparatus. The connect rejection represents a rejection of connection to the second communication apparatus and the connection permission represents a permission of connection to the second communication apparatus. | 07-09-2009 |
20100002646 | COMMUNICATION APPARATUS AND METHOD - A communication apparatus includes a receiving device configured to receive a physical frame in which a plurality of MAC frames, each having a sequence number, are aggregated. A reception buffer which stores MAC frames of the physical frame received by the receiving device. A determination device determines whether or not the first MAC frame in the physical frame received by the receiving device has been successfully received. A reception buffer management device determines, when the first MAC frame has been successfully received, a MAC frame to be forwarded to an upper layer, on the basis of the sequence number of the first MAC frame, and extracts the MAC frame from the reception buffer. | 01-07-2010 |
20100046437 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD - A communication apparatus includes a receiving device configured to receive one physical frame in which a plurality of MAC frames are aggregated. This physical frame includes one acknowledgement request frame for the plurality of MAC frames. The apparatus includes an acknowledgement frame forming device configured to form an acknowledgement frame representing reception statuses of the plurality of MAC frames in response to the acknowledgement request frame. The apparatus also includes a transmitting device configured to transmit the acknowledgement frame. This acknowledgement frame includes a compressed acknowledgement frame representing an acknowledgement bitmap having a size equal to a maximum number of MSDUs (MAC Service Data Units) when one MPDU (MAC Protocol Data Unit) corresponds to one MSDU. | 02-25-2010 |
20100046540 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD - A communication apparatus includes a receiving device configured to receive one physical frame in which a plurality of MAC frames are aggregated. This physical frame includes one acknowledgement request frame for the plurality of MAC frames. The apparatus includes an acknowledgement frame forming device configured to form an acknowledgement frame representing reception statuses of the plurality of MAC frames in response to the acknowledgement request frame. The apparatus also includes a transmitting device configured to transmit the acknowledgement frame. This acknowledgement frame includes a compressed acknowledgement frame representing an acknowledgement bitmap having a size equal to a maximum number of MSDUs (MAC Service Data Units) when one MPDU (MAC Protocol Data Unit) corresponds to one MSDU. | 02-25-2010 |
20100074277 | COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND COMMUNICATION CONTROL PROGRAM - A generation device generates a frame to be transmitted to a destination communication apparatus. The frame includes a first separation field, a first MAC protocol data unit (MPDU) following the first separation field, a second separation field following the first MPDU, a third separation field following the second separation field, and a third MPDU following the third separation field. The second separation field includes length information set to a value of zero to indicate no second MPDU directly follows the second separation field. The first MPDU includes a first MAC header, a first data field, and a first frame check sequence (FCS). The first FCS is for detecting an error occurred in at least the first data field. The third MPDU includes a third MAC header, a third data field, and a third FCS. The third FCS is for detecting an error occurred in at least the third data field. | 03-25-2010 |
20100189056 | COMMUNICATION METHOD FOR WIRELESS LANS - A physical frame is generated and transmitted to a destination terminal. In this physical frame, one of a data frame, an acknowledgement frame, and an acknowledgement request frame, and a transmission permission frame which is used in place of a normal Ack frame associated with a delayed Block Ack, and permits the destination terminal to perform piggyback transmission, are aggregated. | 07-29-2010 |
20100329462 | COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND COMMUNICATION METHOD - In a communication system, a first wireless communication apparatuses belonging to a communication group receives a connection request frame including a notifying security level from a second communication apparatus outside of the communication group. The first communication apparatus stores a reference security level peculiar to the communication group, which is selected from security levels depending on one of encryption methods including non-encryption and encryption strengths. In the first communication apparatus, the notifying security level is compared with the reference level, and a response frame including one of a connect rejection and a connection permission is described, is generated and transferred to the second communication apparatus. The connect rejection represents a rejection of connection to the second communication apparatus and the connection permission represents a permission of connection to the second communication apparatus. | 12-30-2010 |
20110064065 | WIRELESS COMMUNICATION APPARATUS AND METHOD - A wireless communication apparatus performs bi-directional communication with an initiator. The apparatus is allocated an allocation period for data transmission from the initiator. The apparatus includes means for generating a first physical frame including an acknowledgement frame with respect to data received from the initiator, and generating a second physical frame in which a plurality of transmission data frames addressed to the initiator are aggregated. The apparatus also includes means for transmitting the first physical frame at a first transmission rate and the second physical frame at a second transmission rate, during the allocation period. | 03-17-2011 |
20120189123 | COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND COMMUNICATION METHOD - A wireless communication circuit includes a receiver to receive at least one of a beacon frame and a probe response frame from a first wireless communication apparatus belonging to a first communication group, at least one of the beacon frame and the probe response frame including first security information indicating a first encryption method. The circuit includes a transmitter to transmit an association request frame to the first wireless communication apparatus, the association request frame including second security information indicating a second encryption method which is supported by the wireless communication circuit, after a determination that the second encryption method overlaps with the first encryption method. The transmitter declines to associate with the first wireless communication apparatus if the first encryption method fails to overlap with the second encryption method. The transmitter transmits a data frame including a frame body after a reception of an association response frame. | 07-26-2012 |
20130128817 | METHOD OF NOTIFYING FUNCTION IDENTIFICATION INFORMATION AND COMMUNICATION SYSTEM - There is disclosed a notification method in a communication system of notifying specific multifunctionality information between terminal stations. An expansion code is generated from both a user input code and a function identification code corresponding to a specific function. A transmission frame including the expansion code is also generated and transmitted to at least one of the terminal stations. | 05-23-2013 |
20140307874 | COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND COMMUNICATION METHOD - A wireless communication circuit includes a receiver to receive at least one of a beacon frame and a probe response frame from a first wireless communication apparatus belonging to a first communication group, at least one of the beacon frame and the probe response frame including first security information indicating a first encryption method. The circuit includes a transmitter to transmit an association request frame to the first wireless communication apparatus, the association request frame including second security information indicating a second encryption method which is supported by the wireless communication circuit, after a determination that the second encryption method overlaps with the first encryption method. The transmitter declines to associate with the first wireless communication apparatus if the first encryption method fails to overlap with the second encryption method. The transmitter transmits a data frame including a frame body after a reception of an association response frame. | 10-16-2014 |