A wireless environment information collection system comprising: a plurality of wireless stations configured to perform wireless communication using a CSMA/CA scheme over a first frequency channel; and a wireless environment information management unit configured to collect wireless environment information of managed wireless stations (1-1 to 1-N) among the plurality of wireless stations, wherein the managed wireless stations (1-1 to 1-N) are configured to be connected to the wireless environment information management unit through a wired network or a wireless network, and wherein: the wireless environment information management unit includes a unit configured to generate and output a channel measurement frame configured to determine at least one wireless station among the managed wireless stations (1-1 to 1-N), and to instruct the at least one determined wireless station to perform, at a time designated by the channel measurement frame, one of stopping of communication over the first frequency channel for a fixed time, starting of measuring channel utilization of the first frequency channel, and both the stopping of communication and the starting of measuring, the channel measurement frame being output at a timing that is an amount of time earlier than the time designated by the channel measurement frame, and said amount increases in proportion to a length of latency in the at least one determined wireless station, wherein said latency is the latency of the channel measurement frame between the wireless environment information management unit and said at least one determined wireless station; and the at least one determined wireless station (1-1 to 1-N) includes a unit configured to perform, at a time designated by the channel measurement frame from the wireless environment information management unit, one of the stopping of the communication over the first frequency channel, the measuring of the channel utilization of the first frequency channel, and both the stopping of the communication and the measuring of the channel utilization, obtain the wireless environment information, and output the obtained wireless environment information to the wireless environment information management unit through the wired network or the wireless network. a plurality of wireless stations configured to perform wireless communication using a CSMA/CA scheme over a first frequency channel; and a wireless environment information management unit configured to collect wireless environment information of managed wireless stations (1-1 to 1-N) among the plurality of wireless stations, wherein the managed wireless stations (1-1 to 1-N) are configured to be connected to the wireless environment information management unit through a wired network or a wireless network, and wherein: the wireless environment information management unit includes a unit configured to generate and output a channel measurement frame configured to determine at least one wireless station among the managed wireless stations (1-1 to 1-N), and to instruct the at least one determined wireless station to perform, at a time designated by the channel measurement frame, one of stopping of communication over the first frequency channel for a fixed time, starting of measuring channel utilization of the first frequency channel, and both the stopping of communication and the starting of measuring, the channel measurement frame being output at a timing that is an amount of time earlier than the time designated by the channel measurement frame, and said amount increases in proportion to a length of latency in the at least one determined wireless station, wherein said latency is the latency of the channel measurement frame between the wireless environment information management unit and said at least one determined wireless station; and the at least one determined wireless station (1-1 to 1-N) includes a unit configured to perform, at a time designated by the channel measurement frame from the wireless environment information management unit, one of the stopping of the communication over the first frequency channel, the measuring of the channel utilization of the first frequency channel, and both the stopping of the communication and the measuring of the channel utilization, obtain the wireless environment information, and output the obtained wireless environment information to the wireless environment information management unit through the wired network or the wireless network.