A resource configuration method, a mobile terminal, a network-side device, and a medium are provided. The method includes: receiving configuration of at least one target cell resource, where the configuration of the at least one target cell resource includes at least one trigger condition for user equipment UE to use the target cell resource; based on a signal quality measurement quantity of a current serving cell of the UE, evaluating whether the at least one trigger condition is satisfied; and determining that the trigger condition is satisfied, and initiating, based on the configuration of the target cell resource, a communication process associated with the trigger condition.