| 摘要 |
In a wireless network, an access point supports more than one service with appearance of availability simultaneously to the more than one service, wherein a service relates to supporting a particular protocol, band, channel, etc. An access point might use elements common to more than one service and switch between them often enough that client devices do not conclude that the access point is unavailable each time it is in fact not available for the service expected by the client device. The differing services might be different protocols, bands, channels, etc. The use of the "CTS to self" signal is one method of causing client stations within range to leave a service quiescent for a period so that the access point that sent the signal can activate another service. This signal can also be used for any other need the access point has to cause the medium to be quiescent for a period so that the access point can stop listening and be assured that no necessary signals will be missed, such as avoidance of interchannel interference or a "multiple virtual AP" AP.
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