Method and apparatus for assigning spectrum of a wireless local area network
First Claim
1. A method of assigning channels to a set of access points coupled to a network, said set of access points including a first access point and a second access point, said network including a set of wireless network nodes, each access point communicates using one of said channels to a subset of wireless network nodes from said set of wireless network nodes, each channel corresponding to a different frequency range in the electromagnetic spectrum, said method comprising:
- at least a first access point of said set of access points transmitting a plurality of messages;
determining a measure of interference between access points communicating on a first channel from said plurality of messages includingtransmitting a first message from said first access point on said first channel, said first message indicating a presence of said first access point,measuring a signal strength of said first message at said second access point, said signal strength corresponding to an amount of conflict between said first access point and said second access point for said first channel, andtransmitting a second message from said second access point to said first access point, said second message including a value corresponding to said signal strength and an identifier, said identifier identifying said second access point as a source of said second message;
determining a second set of channel assignments that results in a lower amount of interference between access points communicating on the first channel; and
assigning said second set of channel assignments to said set of access points.
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Abstract
One embodiment of the invention includes assigning channels to a set of access points coupled to a network. The network includes a set of wireless network nodes. Each access point communicates, using one of the channels, to a subset of the wireless network nodes. Each channel corresponds to a different frequency range in the electromagnetic spectrum. The embodiment includes the following steps. At least a first access point of the set of access points transmits a plurality of messages. A measure of interference between access points communicating on a first channel is determined from the plurality of messages. A second set of channel assignments, that results in a lower amount of interference between access points communicating on the first channel, is determined. The second set of channel assignments is assigned to the set of access points. Thus, non-interfering frequency assignments for the access points can be determined.
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Citations
15 Claims
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1. A method of assigning channels to a set of access points coupled to a network, said set of access points including a first access point and a second access point, said network including a set of wireless network nodes, each access point communicates using one of said channels to a subset of wireless network nodes from said set of wireless network nodes, each channel corresponding to a different frequency range in the electromagnetic spectrum, said method comprising:
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at least a first access point of said set of access points transmitting a plurality of messages; determining a measure of interference between access points communicating on a first channel from said plurality of messages including transmitting a first message from said first access point on said first channel, said first message indicating a presence of said first access point, measuring a signal strength of said first message at said second access point, said signal strength corresponding to an amount of conflict between said first access point and said second access point for said first channel, and transmitting a second message from said second access point to said first access point, said second message including a value corresponding to said signal strength and an identifier, said identifier identifying said second access point as a source of said second message; determining a second set of channel assignments that results in a lower amount of interference between access points communicating on the first channel; and assigning said second set of channel assignments to said set of access points. - View Dependent Claims (2, 3, 4, 5, 6, 7, 14, 15)
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8. A method of assigning channels to a set of access points coupled to a network, said set of access points including a first access point and a second access point, said network including a set of wireless network nodes, each access point communicates using one of said channels to a subset of wireless network nodes from said set of wireless network nodes, each channel corresponding to a different frequency range in the electromagnetic spectrum, said method comprising:
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at least a first access point of said set of access points transmitting a plurality of messages; determining a measure of interference between access points communicating on a first channel from said plurality of messages including transmitting a first message from said first access point indicating a presence of said first access point, measuring a signal strength of said first message at said second access point, said signal strength corresponding to an amount of conflict between said first access point and said second access point for said first channel; determining a second set of channel assignments that results in a lower amount of interference between access points communicating on the first channel; and
assigning said second set of channel assignments to said set of access points. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification