A resource allocation notification method, comprising: receiving, by a wireless access point, capability information of a terminal device, wherein the capability information of the terminal device comprises one or more channel extension types supported by the terminal device; determining, by the wireless access point according to the capability information of the terminal device, to use the one or more channel extension types to allocate multiple channels to the terminal device; and sending, by the wireless access point, channel allocation information and channel extension type information to the terminal device, wherein the channel allocation information indicates that the terminal device sends and receives data on the multiple channels, and the channel extension type information indicates the one or more channel extension types of channels that the wireless access point determines to use, wherein the channel allocation information and the channel extension type information are carried in a new extended schedule element; wherein the new extended schedule element includes an element ID field, a length field, and multiple allocation fields; wherein one allocation field including the channel allocation information and the channel extension type information, the element ID number carried in the element ID field in the new extended schedule element is different from an element ID number carried in the existing extended schedule element defined in the IEEE 802.1 lad standard, and wherein the method further comprises: sending, by the wireless access point, a first extended schedule element to the terminal device before sending the new extended schedule element, wherein the first extended schedule element carries indication information that indicates that the multiple channels are allocated to the terminal device; wherein an allocation ID, a source association ID, and a destination association ID that are carried in the first extended schedule element are respectively consistent with an allocation ID, a source association ID, and a destination association ID that are carried in the allocation field of the new extended schedule element. receiving, by a wireless access point, capability information of a terminal device, wherein the capability information of the terminal device comprises one or more channel extension types supported by the terminal device; determining, by the wireless access point according to the capability information of the terminal device, to use the one or more channel extension types to allocate multiple channels to the terminal device; and sending, by the wireless access point, channel allocation information and channel extension type information to the terminal device, wherein the channel allocation information indicates that the terminal device sends and receives data on the multiple channels, and the channel extension type information indicates the one or more channel extension types of channels that the wireless access point determines to use, wherein the channel allocation information and the channel extension type information are carried in a new extended schedule element; wherein the new extended schedule element includes an element ID field, a length field, and multiple allocation fields; wherein one allocation field including the channel allocation information and the channel extension type information, the element ID number carried in the element ID field in the new extended schedule element is different from an element ID number carried in the existing extended schedule element defined in the IEEE 802.1 lad standard, and wherein the method further comprises: sending, by the wireless access point, a first extended schedule element to the terminal device before sending the new extended schedule element, wherein the first extended schedule element carries indication information that indicates that the multiple channels are allocated to the terminal device; wherein an allocation ID, a source association ID, and a destination association ID that are carried in the first extended schedule element are respectively consistent with an allocation ID, a source association ID, and a destination association ID that are carried in the allocation field of the new extended schedule element.