Patent application number | Description | Published |
20090135064 | METHOD AND DEVICE FOR WIRELESS DIRECTIONAL BEAM-FORMING TRANSMISSION - A method and device for wireless directional beam-forming transmission. The method for wireless directional beam-forming transmission between a first device and a second device comprises conducting one or more omni-directional transmissions between the first device and a third device; conducting one or more omni-directional transmissions between the second device and the third device; and determining directional information for directional beam forming transmissions between the first and second devices based on the omni-directional transmissions. | 05-28-2009 |
20090262710 | RADIO COMMUNICATION METHOD AND RADIO COMMUNICATION DEVICE - Provided is a radio communication method capable of optimally using the wide-band communication enabled time while maintaining power saving in an ad hoc network. According to this method, in the ad hoc network using the wide-band communication and a narrow-band communication, transmission and output of the narrow-band synchronization tone signal and the resynchronization tone signal are controlled so that the reach radius of the narrow-band synchronization signal and the resynchronization tone signal exceeds the reach radius of the wide-band signal (milli-wave UWE signal). Thus, when radio communication devices pass by each other, super frame synchronization is completed before reaching the wide-band communication enabled range of the ad hoc network, thereby optimally using the wide-band communication-enabled time. | 10-22-2009 |
20090323667 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - There is disclosed a wireless communication apparatus that does not interrupt synchronous communication but can continuously perform the synchronous communication even when an address duplication occurs between the local wireless communication apparatus and a nearby wireless communication apparatus. A plurality of wireless communication apparatuses constitutes an ad hoc network system where they transmit beacons to each other. In the wireless communication apparatus, an address processing part ( | 12-31-2009 |
20100002659 | WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION APPARATUS - A wireless communication method wherein the power consumption can be reduced as compared with the conventional one and a wireless communication apparatus can synchronize its super-frame with the super-frame of another wireless communication apparatus in an ad hoc network. According to this method, in the ad hoc network where a plurality of wireless communication apparatuses use broadband signals to data-communicate with each other, a wireless communication apparatus transmits an end tone ( | 01-07-2010 |
20100002676 | RADIO COMMUNICATION METHOD AND RADIO COMMUNICATION DEVICE - Provided is a radio communication method capable of easily realizing multi-access in an ad-hoc network using a directive radio wave. In the ad-hoc network using the directive radio wave of the method, two PNC (A | 01-07-2010 |
20100266053 | WIRELESS COMMUNICATION METHOD, RADIO TRANSMITTER APPARATUS AND RADIO RECEIVER APPARATUS - A wireless communication method, a radio transmitter apparatus and a radio receiver apparatus wherein a signal sequence, which is used in a reception process using a first modulation scheme and can be generated from a signal sequence prepared for a reception process and used in a second modulation scheme, is employed, thereby achieving a performance to a similar extent to the reception process performance using the second modulation scheme. A radio transmitter apparatus ( | 10-21-2010 |
20100316043 | RADIO COMMUNICATION METHOD AND RADIO COMMUNICATION DEVICE - Provided is a radio communication method which can reduce the power consumption as compared to the conventional technique while realizing coexistence of a plurality of radio communication methods and can perform synchronization with a super frame of other radio communication device. The super frame has life confirmation slots ( | 12-16-2010 |
Patent application number | Description | Published |
20090279523 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - Provided is a wireless communication apparatus wherein random multi-access can be performed while ensuring a transmission distance, even with a radio wave having directivity. A wireless communication apparatus ( | 11-12-2009 |
20100031109 | RECEIVING TERMINAL AND RECEIVING METHOD - A receiving terminal is provided that prevents a load on a network near a receiving terminal from increasing when a retransmission request is made to a plurality of other terminals, and enables the probability of being able to compensate for a lost packet by means of a retransmission packet to be increased. In a receiving terminal that transmits a retransmission request for compensating for a lost packet lost in a network, a measurement section measures a time period corresponding to a distance in the network between the receiving terminal and a plurality of receiving terminals, a calculation section calculates for each of the receiving terminals a float (spare time period) found by subtracting the current time and a time period measured by the measurement section from a playback time at which a retransmitted packet is played back, and a decision section decides retransmission request transmission timing and a retransmission request transmission destination for each of the receiving terminals based on the calculated floats. | 02-04-2010 |
20100183012 | DATA TRANSMITTING APPARATUS AND DATA RETRANSMITTING METHOD - A data transmitting apparatus is provided for making it possible to send out a retransmitting packet at early timing even in the case where a delivery tree structure is unclear. A transmitting terminal device ( | 07-22-2010 |
20100278124 | ADAPTIVE BEACON COORDINATION IN COMMUNICATION NETWORK USING SIGNAL FORMATS - An adaptive beacon coordination method in a communication network using signal formats mutually incompatible. A coordination device broadcasts a first beacon in a first signal format and a second beacon in a second signal format in a superframe. The first and second beacons are used to send medium access information to a client device having the first signal format and a client device having the second signal format, respectively. When there are three or more signal formats in a network, the coordination device can broadcast three or more beacons. The number of beacons can be adapted to various superframes according to the functions of all the client devices in the network. If all the client devices support a signal format, the coordination device broadcasts only a single beacon in the signal format. After a predetermined number of superframes, the coordination device again starts to broadcast beacons so that new client devices having different respective signal formats can join the network. | 11-04-2010 |