Channel selection in a wireless network
5 Assignments
0 Petitions
Accused Products
Abstract
In order to achieve improved performance for users on a wireless network, it is desirable to reduce interference between wireless access points (APs or WAPs) by selectively assigning different channels to the radios of the APs in a-neighborhood. This may be performed by process whereby a central controller automatically assigns channels to one or more APs managed by that controller in accordance with a channel selection algorithm that considers received signal strength indication (RSSI) and transmit (Tx) or receive (Rx) error rates on channels of the radios. The algorithm also takes into account any stand-alone APs in the network (i.e., not connected to the network) and assigns the channels to managed APs in such a way as to avoid interference with the stand-alone APs.
25 Citations
31 Claims
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12. A method comprising:
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determining a plurality of access points configured to communicate via a wireless network comprising a plurality of channels, including a first channel and a second channel; selecting an access point of the plurality of access points, the selected access point being configured to operate on the first channel; determining a first received signal strength indication (RSSI) associated with the first channel and a second RSSI associated with the second channel, wherein the first RSSI is greater than the second RSSI; and configuring the selected access point to operate on the second channel of the plurality of channels of the wireless network. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A system comprising:
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a plurality of access points comprising one or more transceivers configured to operate on one of a plurality of channels; a wireless network including the plurality of channels; the one or more transceivers of each access point being configured to determine a received signal strength indication (RSSI) for each of the plurality of channels; and a central controller associated with the wireless network, the central controller being configured to; determine one or more potential operating channels for each transceiver based on a determination that the RSSI associated with each of the potential operating channels is less than a threshold RSSI, and configure at least one of the transceivers to operate on one of the potential operating channels associated with the at least one transceiver. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A method comprising:
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determining an interference level and a packet error rate associated with each of a plurality of access points arranged into one or more neighborhoods of a wireless network comprising a plurality of channels, wherein each access point is configurable to operate on one of the plurality of channels; determining a candidate list comprising, at most, one access point from each neighborhood wherein the packet error rate associated with each access point of the candidate list is less than a threshold error rate; selecting, for each access point of the candidate list, a low interference channel from the plurality of channels wherein the low interference channel is associated with an interference level below a threshold interference value; and configuring each access point of the candidate list to operate on the low interference channel associated with each of the access points. - View Dependent Claims (28, 29, 30, 31)
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Specification