Downlink information sending method, downlink information receiving method, downlink information sending device and downlink information receiving device

The invention discloses a downlink information sending method, a downlink information receiving method, a downlink information sending device and a downlink information receiving device. The downlink information sending method comprises the steps of grouping channels carrying different downlink information and allocating the grouped channels to narrow-band resources to send the channels. The problem that downlink information cannot be received in limited-bandwidth scenarios in the related technologies is solved, and correct reception of downlink information is ensured.