INFORMATION PROCESSING METHODS, APPARATUSES, DEVICES, AND SYSTEMS

Implementations of the present specification disclose an information processing method, apparatus, device, and system. The method is applied to a network access stratum device, a persistent connection is maintained between the network access stratum device and a terminal device, and a short connection is maintained between the network access stratum device and a message forwarding device. The method includes: receiving an uplink message sent by the terminal device; encapsulating the uplink message and a session identifier of the persistent connection maintained between the network access stratum device and the terminal device into a target message corresponding to a short connection; sending the target message to the message forwarding device, and receiving a downlink message corresponding to the target message and sent by the message forwarding device, where the downlink message includes the session identifier; determining a receiving device of the downlink message based on the session identifier; and sending the downlink message to the terminal device corresponding to the session identifier.