Multi-beam co-channel Wi-Fi access point
First Claim
1. A system comprising:
- one or more Wi-Fi transmit antennas beamformers;
one or more Wi-Fi receive antennas; and
a number N of co-located co-channel Wi-Fi access points (APs) which comply with the IEEE 802.11 standard having Wi-Fi transmitters and receivers and connected to the Wi-Fi transmit antennas beamformers and the Wi-Fi receive antennas, wherein the Wi-Fi transmit antennas beamformers are configured to produce and transmit a plurality of directional beams of a common frequency, directed at a plurality of Wi-Fi user equipment (UE) devices such that the directional beams are sufficiently isolated from each other, so that at least some of the Wi-Fi UE devices communicate simultaneously with the plurality of Wi-Fi APS,wherein the receive and/or transmit antennas comprise an array of antenna elements and wherein said arrays are implemented with tapering that reduces side lobe levels of the beams, and wherein the tapering is carried out by monitoring traces of transmitted signals originated from said APs, and manipulating antenna weights to reduce said traces, and wherein said traces are fed into a cancellation process in which said traces are subtracted from samples of the original signal.
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0 Petitions
Accused Products
Abstract
A system and method for providing multi-beam Wi-Fi access points. The system includes one or more Wi-Fi transmit antennas beamformers; one or more Wi-Fi receive antennas or receive beamformers; and a number N of co-channel Wi-Fi access points (APs) and a number of M non co-channel APS, where all APs comply with IEEE802.11xx standard, connected to the Wi-Fi transmit antennas beamformers, wherein the Wi-Fi transmit antennas beamformers are configured to produce a plurality of non spatially adjacent beams of a common frequency, directed at a plurality of Wi-Fi user equipment (UE) such that the directional beams are sufficiently isolated from each other, and at least some of the Wi-Fi UEs communicate simultaneously with the plurality of Wi-Fi access points.
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Citations
28 Claims
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1. A system comprising:
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one or more Wi-Fi transmit antennas beamformers; one or more Wi-Fi receive antennas; and a number N of co-located co-channel Wi-Fi access points (APs) which comply with the IEEE 802.11 standard having Wi-Fi transmitters and receivers and connected to the Wi-Fi transmit antennas beamformers and the Wi-Fi receive antennas, wherein the Wi-Fi transmit antennas beamformers are configured to produce and transmit a plurality of directional beams of a common frequency, directed at a plurality of Wi-Fi user equipment (UE) devices such that the directional beams are sufficiently isolated from each other, so that at least some of the Wi-Fi UE devices communicate simultaneously with the plurality of Wi-Fi APS, wherein the receive and/or transmit antennas comprise an array of antenna elements and wherein said arrays are implemented with tapering that reduces side lobe levels of the beams, and wherein the tapering is carried out by monitoring traces of transmitted signals originated from said APs, and manipulating antenna weights to reduce said traces, and wherein said traces are fed into a cancellation process in which said traces are subtracted from samples of the original signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system comprising:
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one or more Wi-Fi transmit antennas beamformers; one or more Wi-Fi receive antennas; a number N of co-located co-channel Wi-Fi access points (APs) which comply with the IEEE 802.11 standard having Wi-Fi transmitters and receivers and connected to the Wi-Fi transmit antennas beamformers and the Wi-Fi receive antennas, wherein the Wi-Fi transmit antennas beamformers are configured to produce and transmit a plurality of directional beams of a common frequency, directed at a plurality of Wi-Fi user equipment (UE) devices such that the directional beams are sufficiently isolated from each other, so that at least some of the Wi-Fi UE devices communicate simultaneously with the plurality of Wi-Fi APS; and a coordinator which serves the plurality of APs, and is configured to perform traffic analysis and to execute load sharing between beams by forcing UE devices handover based on load balancing requirements, wherein the coordinator reports a crosstalk table indicating crosstalk between victimizing beams and victim UE devices and wherein the APs feeding the victim UE and the victimizing beam perform time sharing when victim UEs are served. - View Dependent Claims (18, 19, 20)
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21. A system comprising:
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one or more Wi-Fi transmit antennas beamformers; one or more Wi-Fi receive antennas; and a number N of co-located co-channel Wi-Fi access points (APs) which comply with the IEEE 802.11 standard having Wi-Fi transmitters and receivers and connected to the Wi-Fi transmit antennas beamformers and the Wi-Fi receive antennas, wherein the Wi-Fi transmit antennas beamformers are configured to produce and transmit a plurality of directional beams of a common frequency, directed at a plurality of Wi-Fi user equipment (UE) devices such that the directional beams are sufficiently isolated from each other, so that at least some of the Wi-Fi UE devices communicate simultaneously with the plurality of Wi-Fi APS, and wherein beam patterns of the transmit antennas exhibit contaminating transmit signals being an accumulated contribution of side lobes and back lobes, wherein the system further comprises amplitude/phase modules associated with said transmit antennas and null transmit module configured to receive a difference between signals received by said receive antenna and said contaminating transmit signals detected in the receiving circuitry and control said amplitude/phase modules so that transmit signal component in the receiver are reduced using accurate destructive interference manifested via closed loop. - View Dependent Claims (22, 23)
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24. A method comprising:
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providing one or more Wi-Fi transmit antennas beamformers; providing one or more Wi-Fi receive antennas; providing a number N of co-located co-channel Wi-Fi access points (APs) which comply with IEEE 802.11 standard, connected to the Wi-Fi transmit antennas beamformers; and producing a plurality of spatially directional beams of a common frequency, directed at a plurality of Wi-Fi user equipment (UE) such that the directional beams are sufficiently isolated from each other, so that at least some of the Wi-Fi UEs communicate simultaneously with the plurality of Wi-Fi access points, wherein the receive and/or transmit antennas comprise an array of antenna elements and wherein said arrays are implemented with tapering that reduces side lobe levels of the beams, and wherein the tapering is carried out by monitoring traces of transmitted signals originated from said APs, and manipulating antenna weights to reduce said traces, and wherein said traces are fed into a cancellation process in which said traces are subtracted from samples of the original signal. - View Dependent Claims (25, 26, 27, 28)
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Specification