SDN (Software Defined Network)-based heterogeneous network convergence framework

A heterogeneous network and network technology, applied in network topology, electrical components, wireless communication, etc., can solve problems such as reducing switching delay, achieve reduced switching delay, simple address management and security management, and save network access The effect of delay

Inactive Publication Date: 2014-09-03
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

And provide a feasible solution for IP maintenance, save the time spent on IP layer switching during heterogeneous network switching, so as to achieve the goal of reducing switching delay, aiming to solve the problem of switching and integration between LTE network and WLAN network

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  • SDN (Software Defined Network)-based heterogeneous network convergence framework
  • SDN (Software Defined Network)-based heterogeneous network convergence framework

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Embodiment Construction

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only part of the embodiments of the present application, not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in this application belong to the protection scope of this application.

[0033] figure 1 It is an SDN-based heterogeneous network fusion architecture diagram proposed by the present invention, and each part in the architecture diagram is described as follows:

[0034] 1. Core: Controller. The controller is located in the center of the core network, and is connected to P-GW, eNodeB and various wireless access points through wired methods, so as to facilitate direct communication with each unit. The controller has three functional units: 1) User identifier encapsulat...

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Abstract

The invention provides a SDN (Software Defined Network)-based heterogeneous network convergence framework. According to the framework, the core idea of control and data separation in the software defined network is referred, a controller is added in an EPC core network, user identity information is packaged to be a unique user identifier to serve as the identity certificate during the network access and switching process. The concept of the user identifier is used, a method of realizing virtual switching under the control of the controller is brought forward, the switching access process can be theoretically simplified, and network access time delay can then be reduced. After switching, the IP remains unchanged, the time spent on IP layer switching in the case of heterogeneous network switching is saved, the target of reducing the entire switching time delay is achieved, IP address management and user safety management in a mobile environment are facilitated as the IP is maintained, and a feasible solution is provided for solving the problem of seamless switching between the LTE network and the WLAN network.

Description

technical field [0001] The patent of the present invention relates to the field of wireless communication, especially the heterogeneous network switching aspect of wireless communication. Background technique [0002] With the increasing variety of wireless terminal applications and the leapfrog development of wireless terminal equipment technical functions, the number of various wireless terminal equipment has increased rapidly. Mary Meeker's report "2012KPCB Internet Trends Year-End Update" shows that the annual growth rate of global smartphone users is 42%, and the total number of users has exceeded 1.1 billion, accounting for 17% of global mobile phone users, and there is still much room for growth; More than 29% of adults in the United States own e-reading devices or tablets; the global network traffic brought by mobile devices accounts for 13% of the total traffic; in India, mobile Internet traffic officially surpassed traditional computer traffic in the second half of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/06H04W36/14H04W64/00H04W84/12
Inventor 赵星张振海路兆铭温向明王鲁晗雷涛马璐夏修妍万明飞
Owner BEIJING UNIV OF POSTS & TELECOMM
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