Method and device for offloading internet access data in access network

Abstract

The invention discloses a method and device for offloading internet access data in an access network, wherein the method and the device are used for solving the technical problems of incompleteness for information acquisition in a monitoring manner, incapability of distinguishing offloading characteristics of users and separation between an offloading strategy and a QoS (Quality of Service) strategy of a core network in an NAT (Network Address Translation) offloading networking scheme. In the scheme provided by the invention, offloading equipment judges whether to offload an RAB (Radio Access Bearer) data flow according to specific values of specific parameters in RAB information; if the RAB data flow needs to be offloaded, the offloading equipment executes the NAT and then sends the offloaded data to the internet; and, if the RAB data flow does not need to be offloaded, the offloading equipment transmits the RAB data flow to the core network. According to the method and the device disclosed by the invention, an offloading decision condition on which the offloading equipment relies is directly sourced from the core network; the core network can actively obtain required user information; therefore, the offloading decision can be made correctly and integrally as much as possible and can be uniformly carried out with the QoS strategy of the core network; and a new QoS management point is unnecessary to set additionally by being independent of the core network.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method and device for offloading Internet access data in an access network. Background technique [0002] At present, the structure of mobile communication network is as follows: figure 1 As shown, under this network structure, the data flow of the mobile user accessing the Internet must pass through the access network and the core network before entering the Internet (Internet). [0003] With the enrichment of terrestrial transmission and the continuous decline of transmission costs, users' demand for Internet traffic and delay continues to increase, and a new type of networking is taking shape. figure 2 It is a possible distribution network structure diagram. Under this network structure, mobile users can connect to the Internet through the core network through traditional channels, or they can connect to the Internet at the IU interface (Interconnection point between an...

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Problems solved by technology

[0009] In view of this, the main purpose of the present invention is to provide a method and device for distributing Internet access data in the access network, which is used to solve the problem that in the NAT distribution network scheme, the monitoring method obtains incomplete information and cannot provide user-distinguished distribution. characteristics, as well as the technical issues of splitting the offload strategy and the QoS strategy of the core network

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