A parallel transmission method, wherein the method comprises: configuring, by a wireless local area network, WLAN, control device, a first configuration parameter for a first access point, wherein the first configuration parameter is used to configure a first station set and a starting time, the first station set comprises one or more stations associated with the first access point, and the first configuration parameter is used to indicate that the first access point can send a first WLAN frame to at least one station in the first station set at the starting time by using a channel resource; and configuring, by the control device, a second configuration parameter for a second access point, wherein the second configuration parameter is used to configure a second station set and the starting time; the second station set comprises one or more stations associated with the second access point; the second configuration parameter is used to indicate that the second access point can send a second WLAN frame to at least one station in the second station set at the starting time by using the channel resource; and signal interference between any station in the first station set and any station in the second station set is less than a predefined threshold; wherein the starting time configured for the first station set and the starting time configured for the second station set are the same; the method further characterized by: obtaining, by the control device, a first receive power, wherein the first receive power is a receive power used by the first access point to receive a signal sent by a first station associated with the first access point; obtaining, by the control device, a second receive power, where the second receive power is a receive power used by the second access point to receive the signal sent by the first station; if a ratio of the first receive power to the second receive power is greater than or equal to a second predefined threshold, determining, by the control device, that the first station belongs to the first station set and if the ratio of the first receive power to the second receive power is less than the second predefined threshold, determining, by the control device, that the first station does not belong to the first station set. configuring, by a wireless local area network, WLAN, control device, a first configuration parameter for a first access point, wherein the first configuration parameter is used to configure a first station set and a starting time, the first station set comprises one or more stations associated with the first access point, and the first configuration parameter is used to indicate that the first access point can send a first WLAN frame to at least one station in the first station set at the starting time by using a channel resource; and configuring, by the control device, a second configuration parameter for a second access point, wherein the second configuration parameter is used to configure a second station set and the starting time; the second station set comprises one or more stations associated with the second access point; the second configuration parameter is used to indicate that the second access point can send a second WLAN frame to at least one station in the second station set at the starting time by using the channel resource; and signal interference between any station in the first station set and any station in the second station set is less than a predefined threshold; wherein the starting time configured for the first station set and the starting time configured for the second station set are the same; the method further characterized by: obtaining, by the control device, a first receive power, wherein the first receive power is a receive power used by the first access point to receive a signal sent by a first station associated with the first access point; obtaining, by the control device, a second receive power, where the second receive power is a receive power used by the second access point to receive the signal sent by the first station; if a ratio of the first receive power to the second receive power is greater than or equal to a second predefined threshold, determining, by the control device, that the first station belongs to the first station set and if the ratio of the first receive power to the second receive power is less than the second predefined threshold, determining, by the control device, that the first station does not belong to the first station set. obtaining, by the control device, a first receive power, wherein the first receive power is a receive power used by the first access point to receive a signal sent by a first station associated with the first access point; obtaining, by the control device, a second receive power, where the second receive power is a receive power used by the second access point to receive the signal sent by the first station; if a ratio of the first receive power to the second receive power is greater than or equal to a second predefined threshold, determining, by the control device, that the first station belongs to the first station set and if the ratio of the first receive power to the second receive power is less than the second predefined threshold, determining, by the control device, that the first station does not belong to the first station set.