摘要:
A method for generating a preamble of a frame for a multiple input multiple output (MIMO) wireless communication begins by, for each transmit antenna of the MIMO wireless communication, generating a carrier detect field, wherein, from transmit antenna to transmit antenna, the carrier detect field is cyclically shifted. The method continues by, for a first grouping of the transmit antennas of the MIMO wireless communication: generating a first guard interval following the carrier detect field; and generating at least one channel sounding field, wherein, from transmit antenna to transmit antenna in the first grouping, the at least one channel sounding field is cyclically shifted, and wherein the at least one channel sounding field follows the first guard interval. The method continues by, when the MIMO wireless communication includes more than the first grouping of the transmit antennas, for another grouping of the transmit antennas: generating at least one other channel sounding field, wherein, from transmit antenna to transmit antenna in the another grouping, the at least one other channel sounding field is cyclically shifted, and wherein the at least one other channel sounding field follows the at least one channel sounding field; and generating the first guard interval prior to the at least one other channel sounding field.
摘要:
A method for configuring a multiple input multiple output (MIMO) wireless communication begins by generating a first preamble for a first antenna of the MIMO communication, wherein the first preamble includes a carrier detect field, a first channel select field, a first signal field, and a second signal field. The method continues by generating a second preamble for at least one other antenna of the MIMO communication, wherein the second preamble includes the carrier detect field, a plurality of channel select fields, and the second signal field. The method continues by simultaneously transmitting the carrier detect field via the first antenna and the least one other antenna. The method continues by transmitting the first channel select field and the first signal field via the first antenna. The method continues by, subsequent to the transmitting the first channel select field and the first signal field via the first antenna, transmitting the plurality of channel select fields via the at least one other antenna. The method continues by simultaneously transmitting the second signal field via the first antenna and the at least one other antenna.
摘要:
A method for multiple input multiple output wireless communication begins by determining protocols of wireless communication devices within a proximal region. The method continues by determining whether the protocols of the wireless communication devices within the proximal region are of a like protocol. The method continues by determining the number of transmit antennas. The method continues, when the protocols of the wireless communication devices within the proximal region are of the like protocol, formatting a preamble of a frame of the wireless communication utilizing at least one of cyclic shifting of symbols, cyclic shifting of tones, sparse tone allocation, and sparse symbol allocation based on the number of transmit antennas.
摘要:
An RF transceiver includes a baseband processing module, a transmitter section, and a receiver section. The baseband processing module convert outbound data into a plurality of outbound symbol streams, wherein each of the plurality of outbound symbol streams is outputted as one or more frames, wherein a frame of the one or more frames includes a setup portion and a data portion, wherein the set up portion includes at least one of a training sequence field and a signal field, and wherein the set up portion is formatted in accordance with one of a plurality of protocols. The baseband processing module further converts a plurality of inbound symbol streams into inbound data. The transmitter section converts the plurality of the outbound symbol streams into a plurality of outbound RF signals. The receiver section converts a plurality of inbound RF signals into the plurality of inbound symbol streams.
摘要:
A method for multiple protocol wireless communications begins by determining protocols of wireless communication devices within a proximal region. The method then continues by determining whether the protocols of the wireless communication devices within the proximal region are of a like protocol. The method continues by, when the protocols of the wireless communication devices within the proximal region are not of a like protocol, selecting a protocol of the protocols of the wireless communication devices within the proximal region based on a protocol ordering to produce a selected protocol. The method continues by utilizing the selected protocol by the wireless communication devices within the proximal region to set up a wireless communication within the proximal region.
摘要:
A method for generating a preamble of a frame for a multiple input multiple output (MIMO) wireless communication begins by, for a first transmit antenna of the MIMO communication, generating a legacy preamble portion for the frame in accordance with a legacy wireless communication protocol, wherein the legacy preamble portion includes at least a first training sequence and a second training sequence and generating a current protocol preamble portion for the frame in accordance with a protocol of the MIMO wireless communication. The processing continues, for at least a second antenna of the MIMO communication, by generating a cyclically shifted legacy preamble portion for the frame, wherein the cyclically shifted legacy preamble portion includes at a cyclically shifted first training sequence and a cyclically shifted second training sequence, wherein the cyclically shifted first training sequence is time-shifted with respect to the first training sequence by a fraction of duration of the legacy preamble portion, and wherein the cyclically shifted second training sequence is time-shifted with respect to the second training sequence by the fraction of duration of the legacy preamble portion and generating a second current protocol preamble portion for the frame in accordance with a protocol of the MIMO wireless communication.
摘要:
A method for multiple input multiple output wireless communication begins by determine the protocol utilized by each of the wireless communication devices within the proximal region. The method continues by determining whether the protocols of the wireless communication devices within a proximal region are of a like protocol. The method continues by determining the a number of transmit antennas. The method continues, when the protocols of the wireless communication devices within a proximal region are of the like protocol, formatting preamble of a frame of a wireless communication utilizing at least one of cyclic shifting of symbols, cyclic shifting of tones, sparse tone allocation, and sparse symbol allocation based on the number of transmit antennas.
摘要:
A method for configuring a multiple input multiple output (MIMO) wireless communication begins by generating a plurality of preambles for a plurality of transmit antennas. Each of the plurality of preambles includes a carrier detection sequence at a legacy transmit rate, a first channel sounding at the legacy transmit rate, a signal field at the legacy transmit rate, and Z−1 channel soundings at a MIMO transmit rate, where L corresponds to a number of channel soundings. The method continues by simultaneously transmitting the plurality of preambles via the plurality of transmit antennas.
摘要:
A method for transmitting wide bandwidth signals in a network that includes legacy devices begins by determining channel bandwidth of a channel that supports the wide bandwidth signals in the network. The method continues by determining overlap of legacy channel bandwidth with the channel bandwidth of the channel. The method continues by providing a legacy readable preamble section within the channel where the legacy channel bandwidth overlaps the channel bandwidth of the channel.
摘要:
A method and apparatus for dynamic frequency selection in a wireless communication system or network includes processing that begins when an access point determines interference on a wireless channel that is being used by the access point. When the interference exceeds an interference threshold, the access point provides a request packet to affiliated stations being serviced by the access point for channel spectrum information. The processing continues as the affiliated stations generate the channel spectrum information regarding each of the wireless channels in the wireless communication network. The processing proceeds then as the affiliated stations provide the channel spectrum information to the access point via the current wireless channel. The access point interprets the channel spectrum information to determine a desired wireless channel of the plurality of wireless channels within the wireless communication network. The access point then provides a selection packet to the affiliated stations via the current wireless channel to indicate that the access point will begin using the desired wireless channel at a particular future time.