IEEE 802.11 standard on channels
Channel usage information is provided by the AP to the non-AP STA to recommend channels for
  noninfrastructure networks or an off-channel TDLS direct link. The non-AP STAs can use the channel usage
  information as part of channel selection processing for a noninfrastructure network or an off-channel TDLS
  direct link.


At page 58.


  The AP Channel Report element contains a list of channels where a STA is likely to find an AP. 


At page 580.


  The Channel Switch Announcement element is used by an AP in a BSS, a STA in an IBSS, or a mesh STA
  in an MBSS to advertise when it is changing to a new channel and the channel number of the new channel.


At page 490.

Source: IEEE-802.11