Method and system for mp-gw port mapping divided by service flow in multipath environment

Abstract

The present invention proposes to apply the existing EPC solution (policy and billing rules) to the MPTCP solution, that is, the multipath aggregation solution, and relates to a port mapping method and system divided by service flows. That is, the present invention adds the mapping information of the application server and the MP-GW port number to the MPTCP service between the terminal and the MP-GW, and additionally sets a new MPTCP service matching 5 on the existing EPC (SAE-GW). The tuple filter can also perform matching on MPTCP services without setting up additional hardware devices or software functions. Therefore, it has the advantage that the policies and charging rules applied to general TCP services can also be applied to MPTCP services.

Description

technical field [0001] The present invention relates to an MP-GW port mapping method and system divided by service flow, and in more detail, relates to an MP-GW port mapping method and system divided by service flow that can map specific ports of MP-GW according to application services, thereby An EPC solution (policy and charging rules) that can normally apply LTE networks in a multi-path (LTE and Wifi) environment. Background technique [0002] figure 1 It is a configuration diagram of a general long-term evolution (LTE: Long Term Evolution) network. refer to figure 1 , will briefly describe the composition of the LTE network. First, the user equipment (UE: User Equipment) is a user terminal with a built-in LTE chip, and the evolved node B (eNB: Evolved Node B) is called "LTE base and LTE network wireless connection between devices. At this time, only the connection between the UE and the eNB is a wireless connection, while all other connections are wired connections. ...

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Problems solved by technology

[0010] However, due to the uncertain proxy (Proxy) characteristics (changes in target IP address and port number, etc.) in the MP-GW, it is difficult to apply the Multi-Path Aggregation (Multi-Path Aggregation) technology

In other words, due to the uncertain proxy (Proxy) feature of MP-GW, the 5-tuple filter cannot operate correctly in SAE-GW

[0011] In addition, in a multipath environment, the SAE-GW is located between the terminal and the MP-GW, and the destination IP address and port information of the service flow sent from the terminal is the IP address and port information of the MP-GW rather than that of the application server providing the service. Address and port information, because the target IP address and port information of the 5-tuple filter registered in SAE-GW is the information of the application server, so the mapping cannot be formed normally on the 5-tuple filter, so there is no way to The problem of applying PCC rules to this service flow

[0012] That is, due to the uncertain proxy (Proxy) characteristics (changes in the target IP address and port number, etc.) in the MP-GW, coupled with the problem of mismatching (mismatch) with the mapping information registered in the 5-tuple filter, resulting in Difficult to apply multipath aggregation techniques

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