5G core network equipment and method supporting PDN link optimization

Abstract

Disclosed are 5G core network equipment and method supporting PDN link optimization, which relate to the technical field of mobile communications, are implemented on the basis of an AMF entity, a UDM entity, a PCF entity, an SMF entity, a UPF entity and a remote PDN gateway. The specific process comprises: a UE sending a session establishment request carrying DNN information to the AMF entity; the AMF entity selecting an SMF entity according to the request; the SMF entity initiating a session policy request and requesting session policy information of a target session from a PCF entity; the PCF entity issuing session policy information to the SMF entity; the SMF entity judging whether the requested DNN information supports an N6 interface MPTCP proxy or not, if yes, the SMF entity continuing to judge whether the session policy information carries a correct MPTCP proxy working mode and priority or not, and initiates a session establishment or modification process carrying an MAR rule cell to the UPF entity; the UPF entity analyzing the MAR rule cell and configuring an MPTCP proxy entity function; and after the session is established, the UPF entity successfully establishing MPTCP proxy connection with the remote PDN gateway. According to the invention, a plurality of PDN link quality optimization functions can be realized.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a 5G core network device and method supporting PDN link optimization. Background technique [0002] The 5G network can provide users with differentiated network capabilities based on business needs, including features such as large bandwidth, low latency, and wide connectivity. With the maturity of 5G network technology, 5G network deployment in areas with difficult coverage, emergency communication applications and 5G proprietary network deployment scenarios. In this scenario, how to deploy 5G network capabilities with low cost and high quality becomes the key to the large-scale promotion of 5G proprietary networks. [0003] Broadband satellite communication has gradually become an indispensable means to realize global seamless personal communication and high-speed internet access in the air. With the gradual evolution of satellite broadband network access technol...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a 5G core network device and method that supports PDN link optimization to solve the problems of unstable data network connection, limited bandwidth, and poor connection quality in 5G deployment scenarios in difficult areas. At the same time, improve the bandwidth, quality and stability of PDN connections, and provide differentiated SLAs for 5G services with different QoS