The present disclosure relates generally to a communication system, and more particularly, to a method for time-deterministic packet forwarding that guarantees a maximum and minimum latency requirement of a service, the method including: receiving latency information of links and nodes on a path, and buffer resource information of the nodes; calculating, on the basis of the buffer resource information of the last node, local latency budgets that the other nodes need to guarantee; performing control so that the nodes transmit a packet on the basis of the local latency budgets; and finally guaranteeing, by the last node, a residual latency budget remaining after the nodes transmit the packet within the local latency budgets.