Multi-slot bundling transmission method and device

An embodiment of the invention provides a multi-slot bundling transmission method and device. Aiming at the characteristics that 4 continuous transmission time intervals are adopted at most to perform bundling in an existing multi-slot bundling technology and the time intervals between transmission for twice is 16ms, improvement is performed on the multi-slot bundling technology, the number of transmission time intervals (TTIs) for transmission is effectively increased by determining time interval round trip time (RTT) for transmission for twice in multi-slot bundling and the bundling time slot number N, wherein the determined RTT is a positive number no larger than 16 ms, and/or the determined N is a positive integer no smaller than 4; when the RTT is 16 ms, N is larger than 4, and when N is 4, the RTT is not equal to 16 ms. The resource utilization rate is improved, and uplink coverage is enhanced.