WiFi network operation with channel aggregation
An access point generates respective first data units for transmission in respective frequency segments, each first data unit including a respective beacon frame having an indication that the access point is operating in multiple frequency segments, and each beacon frame including a respective MAC address utilized by the access point for operation in the respective frequency segment. The access point transmits the respective first data units having the respective beacon frames in respective primary channels of the respective frequency segments to permit client stations to discover the access point in any of the respective primary channels. In response to receiving from a first client station a probe request frame in one of the frequency segments, the access point transmits a probe response frame in the one frequency segment, the probe response frame including, for each frequency segment, respective operation information indicating respective operation parameters for the respective frequency segment.
1. A method of operation in a wireless local area network (WLAN), the method comprising:
generating, at a wireless network interface of an access point, respective first data units for transmission in respective primary channels of respective frequency segments, each first data unit including a respective beacon frame having an indication that the access point is operating in multiple frequency segments, and each beacon frame including a respective MAC address utilized by the access point for operation in the respective frequency segment;
transmitting, by the wireless network interface, the respective first data units having the respective beacon frames in the respective primary channels of the respective frequency segments to permit client stations to discover the access point in any of the respective primary channels; and
in response to receiving from a first client station a probe request frame in one of the frequency segments, transmitting, by the wireless network interface, a probe response frame in the one frequency segment, the probe response frame including, for each frequency segment, respective operation information indicating respective operation parameters for the respective frequency segment.
2. The method of claim 1 , wherein transmitting the respective first data units having the respective beacon frames in the respective primary channels comprises transmitting one first data unit in a first frequency band and transmitting another first data unit in a second frequency band, the first frequency band being separated in frequency from the second frequency band by a frequency gap.
3. The method of claim 2 , wherein:
transmitting the one first data unit in the first frequency band comprises transmitting the one first data unit in one of i) a 2.4 GHz frequency band, ii) a 5 GHz frequency band, and iii) a 6 GHz frequency band; and
transmitting the other first data unit in the second frequency band comprises transmitting the other first data unit in a different one of i) the 2.4 GHz frequency band, ii) the 5 GHz frequency band, and iii) the 6 GHz frequency band.
4. The method of claim 1 , further comprising:
generating, at the wireless network interface, the probe response frame to include, for each frequency segment, a respective indication of the respective primary channel in the respective frequency segment.
5. The method of claim 1 , further comprising:
generating, at the wireless network interface, the probe response frame to include, for each frequency segment, a respective indication of a respective operating channel bandwidth in the respective frequency segment.
6. The method of claim 1 , further comprising:
generating, at the wireless network interface, the probe response frame to include, for each frequency segment, a respective indication of the respective primary channel in the respective frequency segment.
7. The method of claim 1 , further comprising:
generating, at the wireless network interface, the probe response frame to include, for each frequency segment, a respective indication of a respective center frequency of the respective frequency segment.
8. The method of claim 1 , further comprising:
generating, at the wireless network interface, the probe response frame to include, for each frequency segment, a respective indication of whether a respective operating channel in the respective frequency segment is contiguous in frequency.
9. The method of claim 1 , further comprising:
receiving, at the network interface, one or more management frames from the first client station, the one or more management frames having been transited by the first client station in one of the frequency segments, wherein the one or more management frames is for negotiating operation parameters to be used in communication between the access point and the first client station in multiple ones of the frequency segments.
10. The method of claim 9 , wherein receiving the one or more management frames from the first client station comprises receiving a block acknowledgement negotiation management frame for negotiating block acknowledgement parameters, wherein the block acknowledgement parameters are to be used in communication between the access point and the first client station in the multiple ones of the frequency segments.
11. A communication device, comprising:
a wireless network interface device corresponding to an access point, the wireless network device having one or more integrated circuit (IC) devices configured to:
generate respective first data units for transmission in respective primary channels of respective frequency segments, each first data unit including a respective beacon frame having an indication that the access point is operating in multiple frequency segments, and each beacon frame including a respective MAC address utilized by the access point for operation in the respective frequency segment,
control the wireless network interface to transmit the respective first data units having the respective beacon frames in the respective primary channels of the respective frequency segments to permit client stations to discover the access point in any of the respective primary channels, and
control the wireless network interface to transmit, in response to the wireless network device receiving from a first client station a probe request frame in one of the frequency segments, a probe response frame in the one frequency segment, the probe response frame including, for each frequency segment, respective operation information indicating respective operation parameters for the respective frequency segment.
12. The communication device of claim 11 , wherein the one or more IC devices are further configured to control the wireless network interface to transmit one first data unit in a first frequency band and transmit another first data unit in a second frequency band, the first frequency band being separated in frequency from the second frequency band by a frequency gap.
13. The communication device of claim 12 , wherein the one or more IC devices are further configured to control the wireless network interface to:
transmit the one first data unit in one of i) a 2.4 GHz frequency band, ii) a 5 GHz frequency band, and iii) a 6 GHz frequency band; and
transmit the other first data unit in the second frequency band comprises transmitting the other first data unit in a different one of i) the 2.4 GHz frequency band, ii) the 5 GHz frequency band, and iii) the 6 GHz frequency band.
14. The communication device of claim 11 , wherein the one or more IC devices are further configured to:
generate the probe response frame to include, for each frequency segment, a respective indication of the respective primary channel in the respective frequency segment.
15. The communication device of claim 11 , wherein the one or more IC devices are further configured to:
generate the probe response frame to include, for each frequency segment, a respective indication of a respective operating channel bandwidth in the respective frequency segment.
16. The communication device of claim 11 , wherein the one or more IC devices are further configured to:
generate the probe response frame to include, for each frequency segment, a respective indication of the respective primary channel in the respective frequency segment.
17. The communication device of claim 11 , wherein the one or more IC devices are further configured to:
generate the probe response frame to include, for each frequency segment, a respective indication of a respective center frequency of the respective frequency segment.
18. The communication device of claim 11 , wherein the one or more IC devices are further configured to:
generate the probe response frame to include, for each frequency segment, a respective indication of whether a respective operating channel in the respective frequency segment is contiguous in frequency.
19. The communication device of claim 11 , wherein the one or more IC devices are further configured to:
receive one or more management frames from the first client station, the one or more management frames having been transited by the first client station in one of the frequency segments, wherein the one or more management frames is for negotiating operation parameters to be used in communication between the access point and the first client station in multiple ones of the frequency segments.
20. The communication device of claim 19 , wherein the one or more IC devices are further configured to receive, as one of the one or more management frames, a block acknowledgement negotiation management frame for negotiating block acknowledgement parameters, wherein the block acknowledgement parameters are to be used in communication between the access point and the first client station in the multiple ones of the frequency segments.
21. The communication device of claim 11 , wherein the wireless network interface comprises:
one or more transceivers implemented using the one or more IC devices.
22. The communication device of claim 21 , further comprising:
one or more antennas coupled to the one or more transceivers.