Patent ID: 9369394
Filing Date: 2016-06-14
CPC Classification: H04L,H04W

Claim Text:
1. A method of handling user plane traffic in a communication network, the method comprising: determining by a first node of the communication network a first mapping between a network address of a server and a first replacement network address matching a packet classification rule implemented in the communication network, performing by a second node of the communication network redirection of a query from a user equipment to provide the user equipment with the first replacement network address; receiving by the first node an uplink data packet of the user plane data traffic, a source address identifier in the uplink data packet corresponding to a network address of the user equipment, and a destination address identifier in the uplink data packet corresponding to the first replacement network address; performing according to the first mapping, by the first node, network address translation of the received uplink data packet by modifying the destination address identifier in the uplink data packet to correspond to the first network address of the server; after said network address translation of the uplink data packet, sending by the first node the modified uplink data packet toward the server, wherein the second node is a Domain Name System node; issuing by the first node a Domain Name System query for the network address of the server and receiving the network address of the server in a response to the Domain Name System query; determining by the first node the first mapping by selecting the first replacement network address in accordance with a traffic class of associated with the server and mapping the selected first replacement network address to the received network address of the network node; and indicating by the first node the first replacement network address to the second node for configuring the second node to resolve a Domain Name System query, issued by the user equipment to obtain the network address of the server, with the first replacement network address.