The invention discloses a method and
system for switching control, a user terminal and a network device. The method for switching control comprises the steps that after an uplink service is successfully established, UE detects SNPL values with preset detection time serving as a period and identifies whether the SNPL values are smaller than a first preset SNPL threshold value in a 6H event measurement control message issued by the network device in advance; if the answer is positive, a
timer is started by the UE to time according to a time period corresponding to triggering
delay information in the 6H event measurement control message; if each SNPL value detected in the time period corresponding to the triggering
delay information is smaller than the first preset SNPL threshold value, a 6H event measurement report message is sent to the network device by the UE, so that the uplink service on the UE is switched to an appropriate
cell and an appropriate frequency point by the network device. According to the method and
system for switching control, the user terminal and the network device, the edge service performance of the
cell under an uplink high-speed
service mode can be improved and the conditions that due to the improvement of the performance, uplink service data sending
delay is prolonged or the delay is prolonged too frequently and the
cell is updated unnecessarily are avoided.