Intelligent band selection for wireless access point
地域：
CA
CA Mountain View
摘要
An access system for a wireless local area network is provided. The access system initiates operation in a first frequency band of a plurality of frequency bands of the wireless local area network to provide one or more wireless client devices of the wireless local area network with access to a wireless wide area network. The access system also processes one or more association requests received in the first frequency band to identify one or more associated wireless client device. The access system also determines whether each of the one or more associated wireless client devices supports a second frequency band. The access system also sends a request to the one or more associated wireless client devices to transition from the first frequency band to the second frequency band based on determining that each of the one or more associated wireless client devices supports the second frequency band.
說明書
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The present disclosure claims priority to U.S. Provisional Patent Application No. 62/675,651, filed on May 23, 2018, and entitled “Intelligent Band Selection for Wireless Access Point,” the entire contents of which are herein incorporated by reference as if fully set forth in this description.
The present disclosure generally relates to wireless communication systems, and in particular, to intelligent band selection for wireless access points.
Wireless local area networks have greatly improved the ways in which users access information on the Internet. Accessing a wireless local area network may require a user to select a wireless access point within the wireless local area network. A wireless device may choose to act as an access point instead of a client, such as when it acts as a mobile hotspot to serve client devices. When doing so, the wireless device may select a frequency band to provide the client devices access to the wireless local area network.
The present disclosure provides methods that account for the characteristics and capabilities of wireless client devices when optimizing frequency band and channel selection. This allows a wireless device to choose a faster (e.g., 5 Gigahertz (GHz)) frequency band more often, thus providing a faster connection, while falling back to a slower (e.g., 2.4 GHz) frequency band for legacy wireless client devices or limitations in range as needed.
權(quán)利要求
What is claimed is:1. An access system for a wireless local area network, the system comprising:one or more processors; and a machine-readable medium comprising instructions stored therein, which when executed by the one or more processors, cause the one or more processors to perform operations comprising:initiating operation in a first frequency band of a plurality of frequency bands of the wireless local area network to provide one or more wireless client devices of the wireless local area network with access to a wireless wide area network; processing one or more association requests received in the first frequency band to identify one or more associated wireless client devices of the one or more wireless client devices; determining whether each of the one or more associated wireless client devices supports a second frequency band of the plurality of frequency bands, the second frequency band having a different frequency than the first frequency band, wherein determining whether each of the one or more associated wireless client devices supports the second frequency band comprises determining whether the one or more associated wireless client devices previously associated to the access system and operated in the second frequency band while associated to the access system; and sending a request to the one or more associated wireless client devices to transition from the first frequency band to the second frequency band based on determining that each of the one or more associated wireless client devices supports the second frequency band. 2. The access system of claim 1 , wherein initiating operation in the first frequency band comprises selecting a first frequency channel in the first frequency band based on one or more scans of data traffic across different frequency channels of the first frequency band. 3. The access system of claim 1 , wherein determining whether each of the one or more associated wireless client devices supports the second frequency band comprises:receiving one or more values in a capability field of each of the one or more associated wireless client devices. 4. The access system of claim 1 , wherein the operations further comprise:obtaining a signal strength measurement from each of the one or more associated wireless client devices; and determining whether the signal strength measurement obtained from each of the one or more associated wireless client devices exceeds a predetermined received signal strength threshold, wherein sending the request to the one or more associated wireless client devices to transition from the first frequency band to the second frequency band is further based on determining that the signal strength measurement obtained from each of the one or more associated wireless client devices exceeds the predetermined received signal strength threshold. 5. The access system of claim 4 , wherein the signal strength measurement received from each of the one or more associated wireless client devices is a received signal strength indicator (RSSI) measurement. 6. The access system of claim 4 , wherein the signal strength measurement received from each of the one or more associated wireless client devices is a received channel power indicator (RCPI) measurement. 7. The access system of claim 1 , wherein the request is sent by the access system when there is a lull in data transmission between each of the one or more associated wireless client devices and the access system. 8. The access system of claim 1 , wherein the operations further comprise:transitioning, by the access system, from the second frequency band to the first frequency band when there is a lull in data transmission between each of the one or more associated wireless client devices and the access system; identifying one or more other wireless client devices operating in the first frequency band that are requesting to join the wireless local area network; determining whether the one or more other wireless client devices operating in the first frequency band operate exclusively in the first frequency band; transitioning, by the access system, from the first frequency band to the second frequency band; and sending a request to the one or more associated wireless client devices operating in the second frequency band to transition from the second frequency band to the first frequency band when the one or more other wireless client devices were determined to operate exclusively in the first frequency band. 9. The access system of claim 1 , wherein determining whether each of the one or more associated wireless client devices supports the second frequency band is performed a predetermined fixed amount of time after initiating operation in the first frequency band. 10. The access system of claim 1 , wherein the first frequency band is a 2.4 GHz frequency band, wherein the second frequency band is a 5 GHz frequency band. 11. The access system of claim 1 , wherein the operations further comprise:identifying an additional associated wireless client device failing to advertise whether the additional associated wireless client device supports the second frequency band; transitioning, by the access system, from the first frequency band to the second frequency band; subsequently determining whether the additional associated wireless client device successfully connected to a channel in the second frequency band; and transitioning, by the access system, from the second frequency band to the first frequency band when the additional associated wireless client device failed to successfully connect to a channel in the second frequency band. 12. The access system of claim 1 , wherein the operations further comprise:initiating operation in the second frequency band simultaneously with the operation in the first frequency band; terminating the simultaneous operation in the first frequency band and the second frequency band when each of the one or more associated wireless client devices is determined to have connected to a channel in the second frequency band; and continuing operation in the second frequency band after terminating the simultaneous operation in the first and second frequency bands. 13. The access system of claim 1 , wherein the operations further comprise:initiating operation in the second frequency band simultaneously with the operation in the first frequency band; identifying an associated wireless client device that maintains a connection to a channel in the first frequency band; determining when there is a lull in data transmission between each associated wireless client device connected to a channel in the second frequency band and the access system; and transitioning, by the access system, from the second frequency band to the first frequency band when there is the lull in data transmission between each associated wireless client device connected to a channel in the second frequency band and the access system. 14. The access system of claim 1 , wherein the operations further comprise:transitioning, by the access system, from the first frequency band to the second frequency band; subsequently initiating operation in the first frequency band simultaneously with the operation in the second frequency band; identifying one or more other wireless client devices operating in the first frequency band that are requesting to join the wireless local area network; and subsequently sending a request to the one or more associated wireless client devices operating in the second frequency band to transition from the second frequency band to the first frequency band. 15. The access system of claim 1 , wherein the operations further comprise:initiating operation in the second frequency band simultaneously with the operation in the first frequency band; identifying a wireless client device that connects or attempts to connect to the first frequency band; and subsequently requesting that the identified wireless client device connects to the second frequency band based on determining that the identified wireless client device supports the second frequency band. 16. The access system of claim 15 , wherein the operations further comprise causing the access system to cycle between the first frequency band and the second frequency band based on identifying the wireless client device that connects or attempts to connect to the first frequency band. 17. The access system of claim 1 , wherein the operations further comprise:determining that each of the one or more associated wireless client devices has connected to the second frequency band; subsequently determining whether each of the one or more associated wireless client devices supports a third frequency band of the plurality of frequency bands, the third frequency band having a different frequency than the first frequency band and the second frequency band; and sending a request to the one or more associated wireless client devices to transition from the second frequency band to the third frequency band based on determining that each of the one or more associated wireless client devices supports the third frequency band. 18. An access system for a wireless local area network, the system comprising:one or more processors; and a machine-readable medium comprising instructions stored therein, which when executed by the one or more processors, cause the one or more processors to perform operations comprising:initiating operation in a first frequency band of a plurality of frequency bands of the wireless local area network to provide one or more wireless client devices of the wireless local area network with access to a wireless wide area network; processing one or more association requests received in the first frequency band to identify one or more associated wireless client devices of the one or more wireless client devices; determining whether each of the one or more associated wireless client devices supports a second frequency band of the plurality of frequency bands, the second frequency band having a different frequency than the first frequency band; and sending a request to the one or more associated wireless client devices to transition from the first frequency band to the second frequency band based on determining that each of the one or more associated wireless client devices supports the second frequency band, wherein the operations further comprise:initiating operation in the second frequency band simultaneously with the operation in the first frequency band; identifying a wireless client device that connects or attempts to connect to the first frequency band; and subsequently requesting that the identified wireless client device connects to the second frequency band based on determining that the identified wireless client device supports the second frequency band. 19. The access system of claim 18 , wherein the operations further comprise causing the access system to cycle between the first frequency band and the second frequency band based on identifying the wireless client device that connects or attempts to connect to the first frequency band. 20. An access system for a wireless local area network, the system comprising:one or more processors; and a machine-readable medium comprising instructions stored therein, which when executed by the one or more processors, cause the one or more processors to perform operations comprising:initiating operation in a first frequency band of a plurality of frequency bands of the wireless local area network to provide one or more wireless client devices of the wireless local area network with access to a wireless wide area network; processing one or more association requests received in the first frequency band to identify one or more associated wireless client devices of the one or more wireless client devices; determining whether each of the one or more associated wireless client devices supports a second frequency band of the plurality of frequency bands, the second frequency band having a different frequency than the first frequency band; and sending a request to the one or more associated wireless client devices to transition from the first frequency band to the second frequency band based on determining that each of the one or more associated wireless client devices supports the second frequency band, wherein the operations further comprise:determining that each of the one or more associated wireless client devices has connected to the second frequency band; subsequently determining whether each of the one or more associated wireless client devices supports a third frequency band of the plurality of frequency bands, the third frequency band having a different frequency than the first frequency band and the second frequency band; and sending a request to the one or more associated wireless client devices to transition from the second frequency band to the third frequency band based on determining that each of the one or more associated wireless client devices supports the third frequency band.
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