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US 9,432,155 B2Granted
Parallel wireless communication apparatus, method, and system
AssigneeIntel Corporation
InventorsQinghua Li, Minnie Ho, Adrian P. Stephens
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Abstract
An access point in a wireless network communicates with multiple mobile stations simultaneously using spatial-division multiple access.
Claims17
A device comprising:
- a physical (PHY) layer component arranged to implement orthogonal frequency division multiplexing (OFDM) in downlink transmissions;
- a radio interface to receive spatial channel estimation signals from a plurality of mobile stations in uplink transmissions, and to provide multiple access to the plurality of mobile stations through spatial-division multiple access (SDMA) using zero-forcing beamforming;
- and
- a media access control (MAC) layer arranged to estimate spatial channels between the device and the plurality of mobile stations, wherein the MAC layer is further arranged to provide coordinated timing of time-coordinated frames between the device and the plurality of mobile stations, the time-coordinated frames end within a pre-determined time window,
- wherein the device is further arranged to implement direct sequence spread spectrum (DSSS) or frequency hopping spread spectrum (FHSS) modulation.
2 more elements
A device, comprising:
- a radio interface comprising antennas and circuitry to support transmission and reception of radio frequency signals, wherein the radio interface is arranged to transmit a spatial channel estimation signal in an uplink transmission to a receiver, the radio interface arranged to communicate with the receiver as a station of a plurality of mobile stations through spatial-division multiple access (SDMA);
- a physical (PHY) layer arranged to communicate using orthogonal frequency division multiplexing (OFDM), wherein the PHY layer is further arranged to implement direct sequence spread spectrum (DSSS) or frequency hopping spread spectrum (FHSS) modulation;
- and
- a media access control (MAC) layer arranged to transmit time-coordinated frames to the receiver, wherein the time-coordinated frames are transmitted from the device simultaneously in parallel transmissions with other frames from the plurality of mobile stations, and wherein the parallel transmissions are timed to end within a pre-determined time window.
1 more element
A method comprising:
- transmitting a first signal for channel estimation;
- receiving, by a receiver implementing direct sequence spread spectrum (DSSS) or frequency hopping spread spectrum (FHSS) modulation, spatial channel estimation signals from a plurality of mobile stations;
- estimating spatial channels between the receiver and the plurality of mobile stations;
- determining that a first mobile station of the plurality of mobile stations has more data to send to the receiver than a second mobile station of the plurality of mobile stations;
- and
- transmitting frames simultaneously to the plurality of mobile stations through spatial-division multiple access (SDMA) using zero-forcing beamforming, wherein the transmitted frames are coordinated in time to end within a predetermined time window, and wherein more data is sent to the second mobile station than the first mobile station.
3 more elements
A method comprising:
- receiving, by a mobile station, a first signal for channel estimation;
- transmitting a spatial channel estimation signal in an uplink transmission to a receiver;
- and
- transmitting time-coordinated frames to the receiver, wherein the time-coordinated frames are transmitted from the mobile station simultaneously in parallel transmissions with other frames from one or more other mobile stations using spatial-division multiple access (SDMA), and wherein the parallel transmissions are timed to end within a pre-determined time window.
1 more element
Dependencies are inferred from the claim text.