摘要:
A wireless communication apparatus includes a memory to store reference data including transmission rates usable for transmission of an aggregated frame including frames and reference frame lengths of the aggregated frame corresponding to the transmission rates, respectively, a throughput obtained with one of the transmission rates and a reference frame length of the reference frame lengths which corresponds to the one of the transmission rates is higher than any throughputs obtained with any frame length at another transmission rate lower than the one of the transmission rates, selects a trial transmission rate and corresponding reference frame length as a trial frame length, sets the trial transmission rate and the trial frame length, with which communication is determined to be possible by transmitting a trial aggregated frame, to initial/maximum values of a transmission rate for transmitting the aggregated frame and a frame length of the aggregated frame, respectively.
摘要:
A wireless communication apparatus includes a transmitter and a receiver, and determines a modulation and error correction coding scheme used by the transmitter. The apparatus estimates a degree of channel variation, transmits, by the transmitter, a first frame for requesting response information necessary to select the modulation and error correction coding scheme, measures a response time between a instant when the transmitter transmits the first frame and a instant when the receiver receives a second frame including the response information, determines a threshold value of the response time for determining reliability of the response information, based on the degree of channel variation, and determines the modulation and error correction coding scheme selected based on the response information included in the second frame received by the receiver in the response time shorter than the threshold value.
摘要:
A wireless communication apparatus includes a memory to store reference data including transmission rates usable for transmission of an aggregated frame including frames and reference frame lengths of the aggregated frame corresponding to the transmission rates, respectively, a throughput obtained with one of the transmission rates and a reference frame length of the reference frame lengths which corresponds to the one of the transmission rates is higher than any throughputs obtained with any frame length at another transmission rate lower than the one of the transmission rates, selects a trial transmission rate and corresponding reference frame length as a trial frame length, sets the trial transmission rate and the trial frame length, with which communication is determined to be possible by transmitting a trial aggregated frame, to initial/maximum values of a transmission rate for transmitting the aggregated frame and a frame length of the aggregated frame, respectively.
摘要:
A wireless control apparatus which performs a wireless communication with a plurality of wireless terminals, comprising: an evaluation signal receiver configured to receive evaluation signals relating to received signals in the respective wireless terminals, which are transmitted from the plurality of wireless terminals; a supplement signal deciding unit which decides a supplement signal necessary to supplement the received signals in the plurality of wireless terminals; and a supplement signal transmitter configured to transmit the supplement signal decided by the supplement signal deciding unit, to the plurality of wireless terminals.
摘要:
A mobile communication terminal apparatus includes an antenna unit configured to select antenna radiation characteristics, and receives a first signal transmitted from transmitting station according to the selected antenna radiation characteristic, a transmitter which transmits a detection signal to other terminals, the designation signal generated from the first signal, for designating the antenna radiation characteristics, a first receiver which receives another designation signal from the other terminal apparatuses, a controller which controls the antenna unit to obtain the antenna radiation characteristics designated by the another designation signal, a second receiver which receives second signal that is transferred from the other terminal apparatuses and is obtained by the antenna radiation characteristics selected by the other terminal apparatuses, and a processor which processes the second signal and the detection signal in a diversity scheme.
摘要:
The present application discloses, inter alia, a system for improving the aggregate throughput of a wireless local area network which includes: at least one access point that is equipped with at least one transceiver configured to simultaneously transmit and receive at multiple frequencies using multiple channels; and the access point being configured to acquire channel conditions of users and to pool sets of users on the channels based on the channel conditions.