Multi-channel WLAN transceiver with antenna diversity
First Claim
Patent Images
1. An access point for use in a wireless local area network (WLAN), the access point comprising:
- a plurality of antennas;
two or more transmitters, which are adapted to transmit downlink signals on different, respective downlink frequency channels of the WLAN via at least one of the antennas; and
two or more receivers, each of which is coupled to receive uplink signals via at least two of the antennas, and which are adapted to receive the uplink signals simultaneously on different, respective uplink frequency channels of the WLAN.
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Abstract
An access point for use in a wireless local area network (WLAN) includes a plurality of antennas and two or more transmitters, which are adapted to transmit downlink signals on different, respective downlink frequency channels of the WLAN via at least one of the antennas. Two or more receivers are coupled to receive uplink signals via at least two of the antennas, and are adapted to receive the uplink signals simultaneously on different, respective uplink frequency channels of the WLAN.
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Citations
24 Claims
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1. An access point for use in a wireless local area network (WLAN), the access point comprising:
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a plurality of antennas;
two or more transmitters, which are adapted to transmit downlink signals on different, respective downlink frequency channels of the WLAN via at least one of the antennas; and
two or more receivers, each of which is coupled to receive uplink signals via at least two of the antennas, and which are adapted to receive the uplink signals simultaneously on different, respective uplink frequency channels of the WLAN. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for mobile communication, comprising:
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a communication medium; and
a plurality of access points interconnected by the medium and arranged to communicate with mobile stations in a wireless local area network (WLAN), each of at least some of the access points comprising;
a plurality of antennas;
two or more transmitters, which are adapted to transmit downlink signals to the mobile stations on different, respective downlink frequency channels of the WLAN via at least one of the antennas;
two or more receivers, each of which is coupled to receive uplink signals from the mobile stations via at least two of the antennas, and which are adapted to receive the uplink signals simultaneously on different, respective uplink frequency channels of the WLAN;
a communication interface, coupled to the communication medium; and
processing and control circuitry, which is adapted to send and receive messages to and from the other access points via the communication interface, so as to make a determination of when each of the two or more transmitters should transmit the downlink signals, and which is coupled to control the two or more transmitters according to the determination. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method for mobile communication, comprising:
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arranging a plurality of access points in a wireless local area network (WLAN), at least some of the access points comprising two or more transmitters and two or more receivers, which are adapted to communicate with mobile stations over the WLAN on different, respective downlink and uplink frequency channels;
receiving at one of the receivers in each of one or more of the access points an uplink signal transmitted over the WLAN by one of the mobile stations on one of the uplink frequency channels;
arbitrating among the access points receiving the uplink signal so as to select one of the access points to respond to the uplink signal; and
actuating one of the transmitters in the selected one of the access points to transmit a response to the one of the mobile stations on one of the downlink frequency channels corresponding to the one of the uplink frequency channels on which the uplink signal was received. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification