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US 10,904,140 B2Granted
Integrated wire and wireless network packet broker and method for GTP correlation assigning method of the same
AssigneeKulcloud
InventorsSeung Yong Park, Seok Hwan Kong, Dipjyoti Saikia
Life of this patent
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Abstract
The present invention relates to a network packet broker device including a deep packet matching module which controls a GTP correlation module to match a GTP control plane packet and a GTP user plane packet and a deep packet matching method thereof. Packet information in a deep stage at a switch level is extracted to match flows of the GTP control plane packet and the GTP user plane packet and a correlation may be assigned to forward the GTP control plane packet and the GTP user plane packet to the same egress port.
Claims5
A network packet broker device comprising:
- a plurality of switches which are open flow edge switches connected to a plurality legacy networks which are radio access networks or wired access networks;
- a software defined network (SDN) controller which acquires information of the plurality of openflow edge switches;
- a legacy router container which treats a switch group including at least some of the plurality of switches as a virtual router to generate routing information for a packet ingressed to any one switch of the switch group, wherein the legacy router container maps a plurality of network heads connected to the plurality of openflow switches which generates legacy routing information for a flow processing inquiry message of the controller based on information of at least one virtual router with information of an external network which is directly coupled to the virtual router;
- one or more processors;
- and
- at least one computer-readable storage medium having stored therein instructions which, when executed by the one or more processors, cause the network packet broker device to:
- receive a general packet radio service tunneling protocol (GTP) user plane packet from a port of a switch of the plurality of switches;
- forward the GTP user plane packet to a predetermined port of a switch of the plurality of switches;
- search for general packet radio service tunneling protocol user (GTP-U) tunnel endpoint identifier (TEID) of the GTP user plane packet to identify an egress port of the GTP user plane packet;
- receive a GTP control plane packet from the port of the switch of the plurality of switches;
- forward the GTP control plane packet received from the egress port, the egress port of the GTP user plane packet connected to a GTP-U TEID of the GTP control plane packet;
- generate a record with a mobility management entity (MME) internet protocol (IP) address as a key and a bearer ID set including an MME IP, a bearer ID, and a sequence and an MME S11 TEID as values in an MME context table;
- generate a record with a serving gateway (SGW) IP address as a key in an SGW context table;
- update SGW S11 TEID and SGW S1U TEID by searching for a record with the SGW IP address as a key, in the SGW context table;
- generate a record with MME S11 TEID as a key and with international mobile subscriber identity (IMSI) context and SGW S11 TEID context as values, in a first correlation table;
- generate a record with SGW S11 TEID as a key and with MME S11 context as a value, in a second correlation table;
- generate a record with SGW S11 TEID as a key and with SGW S11 TEID context as a value, in a third correlation table;
- generate a record with eNB TEID and eNB IP as keys and with SGW S1U TEID context as a value, in a fourth correlation table;
- update a bearer ID set including an MME IP, a bearer ID, and a sequence of a record with an MME IP address as a key and an eNB S1U TEID value in the MME context table;
- and
- generate a record with an IMSI as a key and with a bearer ID set including an MME IP, a bearer ID, and a sequence as a value, in an IMSI table.
18 more elements
A method for assigning a general packet radio service tunneling protocol (GTP) correlation using a network packet broker device, the method comprising:
- receiving a GTP user plane packet from a port of a switch;
- forwarding the GTP user plane packet to a predetermined port of the switch;
- searching for general packet radio service tunneling protocol user (GTP-U) tunnel endpoint identifier (TEID) of the GTP user plane packet to identify an egress port of the GTP user plane packet;
- receiving a GTP control plane packet from the port of the switch;
- forwarding the GTP control plane packet received from the egress port, the egress port of the GTP user plane packet connected to a GTP-U TED of the GTP control plane packet;
- generating a record with a mobility management entity (MME) internet protocol (IP) address as a key and a bearer ID set including an MME IP, a bearer ID, and a sequence and an MME S11 TED as values in an MME context table;
- generating a record with a serving gateway (SGW) IP address as a key in an SGW context table;
- updating SGW S11 TED and SGW S1U TED by searching for a record with the SGW IP address as a key, in the SGW context table;
- generating a record with MME S11 TED as a key and with international mobile subscriber identity (IMSI) context and SGW S11 TED context as values, in a first correlation table;
- generating a record with SGW S11 TEID as a key and with MME S11 context as a value, in a second correlation table;
- generating a record with SGW S11 TEID as a key and with SGW S11 TED context as a value, in a third correlation table;
- generating a record with eNB TED and eNB IP as keys and with SGW S1U TED context as a value, in a fourth correlation table;
- updating a bearer ID set including an MME IP, a bearer ID, and a sequence of a record with an MME IP address as a key and an eNB S1U TED value in the MME context table;
- and
- generating a record with an IMSI as a key and with a bearer ID set including an MME IP, a bearer ID, and a sequence as a value, in an IMSI table.
12 more elements
Dependencies are inferred from the claim text.