Protocol relay device, protocol relay system, protocol relay method, and protocol relay program
AssigneeNippon Telegraph and Telephone Corporation
InventorsTakeshi Yamada, Kenta Shinohara
Life of this patent
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Abstract
A protocol relay device (100) includes a C-plane processing unit (10), a U-plane processing unit (20), and a UPF container management unit (30). The UPF container management unit (30) notifies a UPF pod (300) of connection establishment. The C-plane processing unit (10) determines a UPF pod (300) for performing transmission processing of a PDU session which is designated in a request packet, and notifies the UPF pod (300) of a determination result. The U-plane processing unit (20) identifies a session ID of user plane traffic received from a base station (202), and transmits the user plane traffic to the corresponding UPF pod (300) based on the determination result.
Claims8
A protocol relay device connected to one or two or more user plane functions (UPFs), the protocol relay device comprising:
- a UPF container management unit, including one or more processors, configured to receive a connection request from the UPF, stores an internet protocol (IP) address according to an interface of a connection request source, and notify the UPF of connection establishment;
- a control plane processing unit, including one or more processors, configured to determine, in a case where a packet-transmission-control-protocol request packet is received, a UPF for performing transmission processing of a protocol data unit (PDU) session which is designated in the request packet, and notify the UPF of a determination result;
- and
- a user plane processing unit, including one or more processors, configured to identify a session identification (ID) of user plane traffic received from a base station, executes network address translation on the user plane traffic based on the determination result, and transmit the user plane traffic to the corresponding UPF.
A protocol relay system comprising:
- one or two or more UPFs;
- and
- a protocol relay device connected to the UPFs, wherein
- the UPF includes
- a connection management unit, including one or more processors, configured to notify the protocol relay device of a connection request and establishes a connection, and
- the protocol relay device includes
- a UPF container management unit, including one or more processors, configured to receive the connection request from the UPF, stores an IP address according to an interface of a connection request source, and notify the UPF of connection establishment,
- a control plane processing unit, including one or more processors, configured to determine, in a case where a packet-transmission-control-protocol request packet is received, a UPF for performing transmission processing of a PDU session which is designated in the request packet, and notify the UPF of a determination result, and
- a user plane processing unit, including one or more processors, configured to identify a session ID of user plane traffic received from a base station, execute network address translation on the user plane traffic based on the determination result, and transmit the user plane traffic to the corresponding UPF.
A protocol relay method performed by a protocol relay device connected to one or two or more UPFs, the method comprising:
- receiving a connection request from the UPF, and storing an IP address according to an interface of a connection request source;
- notifying the UPF of connection establishment;
- determining, in a case where a packet-transmission-control-protocol request packet is received, a UPF for performing transmission processing of a PDU session which is designated in the request packet, and notifying the UPF of a determination result;
- and
- identifying a session ID of user plane traffic received from a base station, executing network address translation on the user plane traffic based on the determination result, and transmitting the user plane traffic to the corresponding UPF.
(canceled)
Dependencies are inferred from the claim text.