Wake-up-radio discovery frame
An interface circuit in an electronic device (such as an access point) may provide a wake-up-radio (WUR) discovery frame for a recipient electronic device, where the WUR discovery frame includes an operating class of a wireless local area network (WLAN) associated with the electronic device. The operating class may specify a regulatory domain and a channel set of the WLAN. Moreover, the WUR discovery frame may include an index of a channel in the channel set. Furthermore, the WUR discovery frame may include a compressed or a partial identifier associated with the electronic device or the WLAN. The amount of compression may be based at least in part on a communication environment of the electronic device, such as a number of electronic devices, or a number of neighboring WLANs. Thus, the WUR discovery frame may have a variable size or length.
1. A recipient electronic device, comprising:
a node configured to communicatively couple to an antenna; and
an interface circuit, communicatively coupled to the node, configured to communicate with an electronic device, wherein the interface circuit comprises a primary connectivity radio (PCR) and a wake-up radio (WUR);
wherein the WUR in the interface circuit is configured to:
receive, from the node, a wake-up-radio (WUR) discovery frame associated with the electronic device, wherein the WUR discovery frame comprises an identifier of an operating class of a wireless local area network (WLAN) that includes the electronic device, wherein the operating class uniquely specifies a regulatory domain and a channel set of the WLAN, and the channel set comprises multiple possible available channels in the regulatory domain;
selectively transition the PCR from a lower-power mode to a higher-power mode in response to receiving the WUR discovery frame; and
perform additional discovery associated with the electronic device, wherein the additional discovery comprises a scan for at least a channel associated with the WLAN based at least in part on the channel set.
2. The recipient electronic device of claim 1 , wherein the electronic device comprises an access point.
3. The recipient electronic device of claim 1 , wherein the WUR discovery frame is compatible with an IEEE 802.11 communication protocol.
4. The recipient electronic device of claim 1 , wherein the scan involves a scan of channels in the channel set.
5. The recipient electronic device of claim 1 , wherein the WUR discovery frame comprises an identifier of the WLAN, which the recipient electronic device previously joined; and
wherein the recipient electronic device makes a roaming decision based at least in part on the identifier.
6. The recipient electronic device of claim 1 , wherein the WUR discovery frame comprises a compressed or a partial identifier associated with the electronic device or the WLAN.
7. The recipient electronic device of claim 1 , wherein the WUR discovery frame has a different length than another WUR discovery frame associated with the electronic device.
8. A non-transitory computer-readable storage medium for use in conjunction with a recipient electronic device, the computer-readable storage medium storing program instructions that, when executed by the recipient electronic device, cause the recipient electronic device to carrying out one or more operations comprising:
receiving, by a wake-up radio (WUR) in an interface circuit in the recipient electronic device, a WUR discovery frame associated with an electronic device, wherein the WUR discovery frame comprises an identifier of an operating class of a wireless local area network (WLAN) that includes the electronic device, wherein the operating class uniquely specifies a regulatory domain and a channel set of the WLAN, and the channel set comprises multiple possible available channels in the regulatory domain;
selectively transitioning a primary connectivity radio (PCR) in the recipient electronic device from a lower-power mode to a higher-power mode in response to receiving the WUR discovery frame; and
performing additional discovery associated with the electronic device using the PCR, wherein the additional discovery comprises a scan for at least a channel associated with the WLAN based at least in part on the channel set.
9. The computer-readable storage medium of claim 8 , wherein the electronic device comprises an access point.
10. The computer-readable storage medium of claim 8 , wherein the WUR discovery frame is compatible with an IEEE 802.11 communication protocol.
11. The computer-readable storage medium of claim 8 , wherein the scan involves a scan of channels in the channel set.
12. The computer-readable storage medium of claim 8 , wherein the WUR discovery frame comprises an identifier of the WLAN, which the recipient electronic device previously joined; and
wherein the recipient electronic device makes a roaming decision based at least in part on the identifier.
13. The computer-readable storage medium of claim 8 , wherein the WUR discovery frame comprises a compressed or a partial identifier associated with the electronic device or the WLAN.
14. The computer-readable storage medium of claim 8 , wherein the WUR discovery frame has a different length than another WUR discovery frame associated with the electronic device.
15. A method for performing additional discovery, comprising:
by a recipient electronic device:
receiving, by a wake-up radio (WUR) in an interface circuit in the recipient electronic device, a WUR discovery frame associated with an electronic device, wherein the WUR discovery frame comprises an identifier of an operating class of a wireless local area network (WLAN) that includes the electronic device, wherein the operating class uniquely specifies a regulatory domain and a channel set of the WLAN, and the channel set comprises multiple possible available channels in the regulatory domain;
selectively transitioning a primary connectivity radio (PCR) in the recipient electronic device from a lower-power mode to a higher-power mode in response to receiving the WUR discovery frame; and
performing the additional discovery associated with the electronic device using the PCR, wherein the additional discovery comprises a scan for at least a channel associated with the WLAN based at least in part on the channel set.
16. The method of claim 15 , wherein the electronic device comprises an access point.
17. The method of claim 15 , wherein the WUR discovery frame is compatible with an IEEE 802.11 communication protocol.
18. The method of claim 15 , wherein the scan involves a scan of channels in the channel set.
19. The method of claim 15 , wherein the WUR discovery frame comprises an identifier of the WLAN, which the recipient electronic device previously joined; and
wherein the recipient electronic device makes a roaming decision based at least in part on the identifier.
20. The method of claim 15 , wherein the WUR discovery frame comprises a compressed or a partial identifier associated with the electronic device or the WLAN.