System and method for route management

By co-locating the control plane and user plane systems of the SMF and RAN CU-CP at the RAN node, packet detection rules and forwarding action rules are generated and installed, solving the data routing delay problem of low-latency and low-mobility UEs in mobile communication systems and achieving efficient and reliable data transmission.

CN122270973APending Publication Date: 2026-06-23RAKUTEN SYMPHONY INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
RAKUTEN SYMPHONY INC
Filing Date
2024-02-20
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

In mobile communication systems, existing technologies, when serving low-latency and low-mobility UEs, cause unnecessary delays by embedding and removing headers in packet data, especially in communication between the UE and the data network, increasing the processing time and complexity of network entities.

Method used

By introducing a Control Plane System (CPS) and a User Plane System (UPS), and by co-locating the SMF and RAN CU-CP at the RAN nodes, Packet Detection Rules (PDR) and Forwarding Action Rules (FAR) are generated and installed to optimize the routing of downlink and uplink packets and reduce header processing time.

Benefits of technology

It achieves efficient data routing for low-latency and low-mobility UEs, reduces hardware and communication complexity, reduces packet routing overhead, and improves communication reliability and speed.

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Abstract

Embodiments of the present disclosure relate to a control plane system (CPS) of a radio access network (RAN) node. The CPS is configured to detect a protocol data unit (PDU) session established between a user equipment (UE) and a data network, and generate a session establishment request based on the detection. The session establishment request includes a first information element (IE) for creating a packet detection rule (PDR) to classify one or more IP packets received from the data network and addressed to the UE as downlink (DL) packets, and a second IE for creating a plurality of forwarding actions corresponding to the PDR to route the DL packets from a user plane system (UPS) to the UE over a data radio bearer. The CPS is further configured to send the session establishment request to the UPS to facilitate the UPS routing the downlink packets to the UE over the DRB.
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