A method for information sending, comprising: determining, by an access network device, a first frequency domain resource pattern among K frequency domain resource patterns, each frequency domain resource pattern corresponding to at least one frequency domain resource, K being a positive integer; and sending, by the access network device, Downlink Control Information, DCI, to a terminal, the DCI being used for indicating an index of the first frequency domain resource pattern, the frequency domain resource corresponding to the first frequency domain resource pattern being used for transmitting service data of the terminal, wherein the method further comprises: before sending, by the access network device, the DCI to a terminal, sending, by the access network device, second configuration information to the terminal, the second configuration information being used for indicating a frequency domain resource range, frequency domain resources in the frequency domain resource range being used for carrying the service data; and characterized in that the method further comprises: sending, by the access network device, third configuration information to the terminal, the third configuration information being used for indicating to divide the frequency domain resources in the frequency domain resource range into K groups to obtain the K frequency domain resource patterns wherein physical resource blocks, PRBs of each frequency domain resource pattern of the K frequency domain resource patterns are equally spaced. determining, by an access network device, a first frequency domain resource pattern among K frequency domain resource patterns, each frequency domain resource pattern corresponding to at least one frequency domain resource, K being a positive integer; and sending, by the access network device, Downlink Control Information, DCI, to a terminal, the DCI being used for indicating an index of the first frequency domain resource pattern, the frequency domain resource corresponding to the first frequency domain resource pattern being used for transmitting service data of the terminal, wherein the method further comprises: before sending, by the access network device, the DCI to a terminal, sending, by the access network device, second configuration information to the terminal, the second configuration information being used for indicating a frequency domain resource range, frequency domain resources in the frequency domain resource range being used for carrying the service data; and characterized in that the method further comprises: sending, by the access network device, third configuration information to the terminal, the third configuration information being used for indicating to divide the frequency domain resources in the frequency domain resource range into K groups to obtain the K frequency domain resource patterns wherein physical resource blocks, PRBs of each frequency domain resource pattern of the K frequency domain resource patterns are equally spaced. sending, by the access network device, third configuration information to the terminal, the third configuration information being used for indicating to divide the frequency domain resources in the frequency domain resource range into K groups to obtain the K frequency domain resource patterns wherein physical resource blocks, PRBs of each frequency domain resource pattern of the K frequency domain resource patterns are equally spaced.