Wireless LAN technologies for reducing interference between or among wireless LAN access points
First Claim
Patent Images
1. A wireless LAN access point comprising:
- a directional antenna;
an interference detector detecting interference effected by another wireless LAN access point on said directional antenna; and
a direction adjusting mechanism adjusting a maximum gain direction of said directional antenna in response to said detected interference.
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Abstract
A wireless LAN technology for reducing interference between (or among) wireless LAN access points is provided. A wireless LAN access point is provided with a directional antenna, an interference detector detecting interference effected by another wireless LAN access point on the directional antenna, and a direction adjusting mechanism adjusting a maximum gain direction of the directional antenna in response to the detected interference.
80 Citations
19 Claims
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1. A wireless LAN access point comprising:
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a directional antenna;
an interference detector detecting interference effected by another wireless LAN access point on said directional antenna; and
a direction adjusting mechanism adjusting a maximum gain direction of said directional antenna in response to said detected interference. - View Dependent Claims (2, 3)
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4. A wireless LAN access point comprising:
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a directional antenna;
an omnidirectional antenna;
a signal processor;
a selector unit selecting one of said directional antenna and said omnidirectional antenna in response to interference from other wireless LAN access points, wherein said selector unit provides electrical connections between said signal processor and said selected antenna, wherein said signal processor receives and transmits radio signals through said selected antenna. - View Dependent Claims (5, 6)
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7. A wireless LAN access point comprising:
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a plurality of directional antennas having different maximum gain directions;
an antenna controller adapted to activate and deactivate said plurality of directional antennas; and
an interference detecting unit detecting interference effected by other wireless LAN access point on said plurality of directional antennas, wherein said antenna controller deactivates one of said plurality of directional antennas on which said interference is effected, while activating another of said plurality of directional antennas which is free from said interference.
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8. A wireless LAN system comprising:
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a plurality of wireless LAN access points, each of which includes;
a directional antenna, and a direction adjusting mechanism connected to said directional antenna; and
an antenna controller determining an optimum direction of each of said directional antennas, wherein each of said direction adjusting mechanisms adjusts a maximum gain direction of said directional antennas associated therewith to said optimum direction determined by said antenna controller. - View Dependent Claims (9)
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10. A wireless LAN access point comprising:
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an interference detector detecting interference effected by other wireless LAN access points;
a channel selector switching a plurality of channels used to communicate with a terminal; and
a signal processor, wherein, in response to detection of interference on one of said plurality of channels during communications through said one channel, said channel selector selects another channel from among said plurality of channels which receives least interference from said other wireless LAN access points, and wherein said signal processor communicates with said terminal through said selected channel.
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11. A method for avoiding interference between wireless LAN access points, comprising:
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detecting interference between first and second wireless LAN access points; and
moving an electromagnetic shield between said first and second wireless LAN access points in response to occurrence of said interference. - View Dependent Claims (12, 13)
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14. A method for operating a wireless LAN access point including a directional antenna, said method comprising:
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detecting interference effected on said directional antenna by another wireless LAN access point;
determining an optimized direction in response to said detected interference; and
adjusting a gain maximum direction to said optimized direction so that said directional antenna is free from said interference.
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15. A method for operating a wireless LAN access point including a directional antenna, said method comprising:
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detecting a strength of interference effected on said directional antenna by another wireless LAN access point;
determining an optimized direction in response to said detected strength of said interference; and
adjusting a gain maximum direction to said optimized direction.
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16. A method for operating a wireless LAN access point including directional and omnidirectional antennas, said method comprising:
selecting one of said directional and omnidirectional antennas;
said selected one being to be used for communications, wherein said directional antenna is selected in response to detection of interference from another wireless LAN access point during use of said omnidirectional antenna.- View Dependent Claims (17)
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18. A method for operating a wireless LAN access point including a plurality of directional antennas having different gain maximum directions, said method comprising:
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determining whether said plurality of directional antennas respectively receive interference from another wireless LAN access point;
deactivating one(s) of said plurality of said directional antennas;
said one(s) receiving said interference; and
achieving communications through remaining one(s) of said plurality of said directional antennas.
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19. A method for operating a wireless LAN access point adapted to communicate with a wireless LAN adapter through a plurality of channels, said method comprising:
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detecting interference from another wireless LAN access point;
selecting one channel from among said plurality of said channels so that said selected channel eliminates or minimizes said interference; and
achieving communications with said wireless LAN adapter through said selected channel.
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Specification