A communication method, wherein the method comprises: receiving, by a terminal device, broadcast information of a serving cell from a network device, wherein the broadcast information comprises a first parameter #1 and a second parameter #1 that are for a neighboring cell having a same frequency as the serving cell, and further includes a first parameter #2 and a second parameter #2 that are for a neighboring cell having a frequency different from that of the serving cell, wherein the first parameter #1 is a minimum receive level value required by the neighboring cell having the same frequency as the serving cell to be camped on by the terminal device that supports supplementary uplink, SUL, carrier transmission, the second parameter #1 is a difference between a minimum receive level value required by the neighboring cell having the same frequency for the terminal device that does not support SUL carrier transmission and the first parameter #1, the first parameter #2 is a minimum receive level value required by the neighboring cell having a frequency different from that of the serving cell to be camped on by the terminal device that supports SUL carrier transmission, and the second parameter #2 is a difference between the minimum receive level value required by the neighboring cell having the different frequency for the terminal device that does not support SUL carrier transmission and the first parameter #2; and performing, by the terminal device, cell reselection based on the first parameter #1 or the first parameter #2 when the terminal device supports SUL carrier transmission; or performing, by the terminal device, cell reselection based on the second parameter #1 or the second parameter #2 when the terminal device does not support SUL carrier transmission. receiving, by a terminal device, broadcast information of a serving cell from a network device, wherein the broadcast information comprises a first parameter #1 and a second parameter #1 that are for a neighboring cell having a same frequency as the serving cell, and further includes a first parameter #2 and a second parameter #2 that are for a neighboring cell having a frequency different from that of the serving cell, wherein the first parameter #1 is a minimum receive level value required by the neighboring cell having the same frequency as the serving cell to be camped on by the terminal device that supports supplementary uplink, SUL, carrier transmission, the second parameter #1 is a difference between a minimum receive level value required by the neighboring cell having the same frequency for the terminal device that does not support SUL carrier transmission and the first parameter #1, the first parameter #2 is a minimum receive level value required by the neighboring cell having a frequency different from that of the serving cell to be camped on by the terminal device that supports SUL carrier transmission, and the second parameter #2 is a difference between the minimum receive level value required by the neighboring cell having the different frequency for the terminal device that does not support SUL carrier transmission and the first parameter #2; and performing, by the terminal device, cell reselection based on the first parameter #1 or the first parameter #2 when the terminal device supports SUL carrier transmission; or performing, by the terminal device, cell reselection based on the second parameter #1 or the second parameter #2 when the terminal device does not support SUL carrier transmission.