Backwards compatibility using selective probe-response suppression
An electronic device may advertise a first BSSID and a second BSSID having a common SSID, separate wireless connection interfaces, and different capabilities, where the first BSSID may support a first IEEE 802.11 standard, and the second BSSID may support one or more previous IEEE 802.11 standards, but may not support the first IEEE 802.11 standard. Then, the electronic device may receive a probe request associated with a second electronic device. Moreover, the electronic device may determine whether the second electronic device supports the first IEEE 802.11 standard based at least in part on one or more fields in the probe request. Next, the electronic device may selectively provide a probe response to the second electronic device with one of the first BSSID and the second BSSID based at least in part on the determination.
1. An electronic device, comprising:
an antenna; and
an interface circuit, coupled to the antenna, configured to communicate with a second electronic device, wherein the interface circuit is configured to:
advertise, from the interface circuit, a first BSSID and a second BSSID having a common SSID, separate wireless connection interfaces, and different capabilities, wherein the first BSSID supports a first IEEE 802.11 standard, and the second BSSID supports one or more previous IEEE 802.11 standards and does not support the first IEEE 802.11 standard;
receive, from the interface circuit, a probe request associated with the second electronic device;
determine whether the second electronic device supports the first IEEE 802.11 standard based at least in part on one or more fields in the probe request; and
selectively provide, to the interface circuit, a probe response intended for the second electronic device with one of the first BSSID and the second BSSID based at least in part on the determination.
2. The electronic device of claim 1 , wherein the first IEEE 802.11 standard comprises IEEE 802.11ax, and the one or more previous IEEE 802.11 standards comprise one or more of: IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, or IEEE 802.11ac.
3. The electronic device of claim 1 , wherein the one or more fields comprises a high-efficiency (HE) field in a Media Access Control (MAC) header in the probe request.
4. The electronic device of claim 1 , wherein the probe response includes the first BSSID when the determination indicates that the second electronic device supports the first IEEE 802.11 standard.
5. The electronic device of claim 1 , wherein, when the probe request includes the second BSSID and the determination indicates that the second electronic device supports the first IEEE 802.11 standard, the probe response includes the second BSSID; and
wherein the interface circuit is configured to, after the second electronic device has associated with the electronic device using the second BSSID, recommend that the second electronic device transition to the first BSSID.
6. The electronic device of claim 1 , wherein the probe response includes the second BSSID when the determination indicates that the second electronic device does not support the first IEEE 802.11 standard.
7. The electronic device of claim 1 , wherein the probe request comprises a broadcast probe request, which includes a wild-card SSID or the SSID.
8. A non-transitory computer-readable storage medium for use in conjunction with an electronic device, the computer-readable storage medium storing program instructions, wherein, when executed by the electronic device, the program instructions cause the electronic device to perform one or more operations comprising:
advertising a first BSSID and a second BSSID having a common SSID, separate wireless connection interfaces, and different capabilities, wherein the first BSSID supports a first IEEE 802.11 standard, and the second BSSID supports one or more previous IEEE 802.11 standards and does not support the first IEEE 802.11 standard;
receiving a probe request associated with a second electronic device;
determining whether the second electronic device supports the first IEEE 802.11 standard based at least in part on one or more fields in the probe request; and
selectively providing a probe response intended for the second electronic device with one of the first BSSID and the second BSSID based at least in part on the determination.
9. The non-transitory computer-readable storage medium of claim 8 , wherein the first IEEE 802.11 standard comprises IEEE 802.11ax, and the one or more previous IEEE 802.11 standards comprise one or more of: IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, or IEEE 802.11ac.
10. The non-transitory computer-readable storage medium of claim 8 , wherein the one or more fields comprises a high-efficiency (HE) field in a Media Access Control (MAC) header in the probe request.
11. The non-transitory computer-readable storage medium of claim 8 , wherein the probe response includes the first BSSID when the determination indicates that the second electronic device supports the first IEEE 802.11 standard.
12. The non-transitory computer-readable storage medium of claim 8 , wherein, when the probe request includes the second BSSID and the determination indicates that the second electronic device supports the first IEEE 802.11 standard, the probe response includes the second BSSID; and
wherein the one or more operations comprise, after the second electronic device has associated with the electronic device using the second BSSID, recommending that the second electronic device transition to the first BSSID.
13. The non-transitory computer-readable storage medium of claim 8 , wherein the probe response includes the second BSSID when the determination indicates that the second electronic device does not support the first IEEE 802.11 standard.
14. The non-transitory computer-readable storage medium of claim 8 , wherein the probe request comprises a broadcast probe request, which includes a wild-card SSID or the SSID.
15. A method for selectively providing a probe response, comprising:
by an electronic device:
advertising a first BSSID and a second BSSID having a common SSID, separate wireless connection interfaces, and different capabilities, wherein the first BSSID supports a first IEEE 802.11 standard, and the second BSSID supports one or more previous IEEE 802.11 standards and does not support the first IEEE 802.11 standard;
receiving a probe request associated with a second electronic device;
determining whether the second electronic device supports the first IEEE 802.11 standard based at least in part on one or more fields in the probe request; and
selectively providing a probe response intended for the second electronic device with one of the first BSSID and the second BSSID based at least in part on the determination.
16. The method of claim 15 , wherein the one or more fields comprises a high-efficiency (HE) field in a Media Access Control (MAC) header in the probe request.
17. The method of claim 15 , wherein the probe response includes the first BSSID when the determination indicates that the second electronic device supports the first IEEE 802.11 standard.
18. The method of claim 15 , wherein, when the probe request includes the second BSSID and the determination indicates that the second electronic device supports the first IEEE 802.11 standard, the probe response includes the second BSSID; and
wherein the method comprises, after the second electronic device has associated with the electronic device using the second BSSID, recommending that the second electronic device transition to the first BSSID.
19. The method of claim 15 , wherein the probe response includes the second BSSID when the determination indicates that the second electronic device does not support the first IEEE 802.11 standard.
20. The method of claim 15 , wherein the probe request comprises a broadcast probe request, which includes a wild-card SSID or the SSID.