MBMS network architecture based on SDN and network optimization method

Abstract

The invention discloses MBMS network architecture based on an SDN. The MBMS network architecture comprises an OpenFlow API, a matrix collection module, an OpenFlow plug-in, a coordination interface, an MBMS network dynamic optimization coordination module, a network optimization module, a path optimization management module, a network resource management module, a topological relation mapping module and an emergency problem processing module. The invention further discloses a method for performing MBMS network optimization by using the MBMS network architecture based on the SDN. The SDN technology is imported in the core network of the traditional cellular network, the MBMS network architecture based on the SDN is provided, MBMS transmission is realized, the difficulty of MBMS communication resource management is reduced, and a dynamic control function of an MBMS network is also realized.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an SDN-based MBMS network architecture and a network optimization method. Background technique [0002] Multimedia Broadcast Multicast Service (MBMS) is a technology for simultaneously sending high-speed multimedia data services to all users or a certain part of user groups in the network. In the MBMS communication system, not only can configuration and communication be performed in units of a single cell, but also a multi-cell cooperative transmission mode can be adopted to form a Multimedia Broadcast Single Frequency Network (MBSFN, Multimedia Broadcast Single Frequency Network). By using the same frequency in multiple cells to simultaneously send information to users who subscribe to the same multimedia data service, the overall signal-to-noise ratio distribution of the cell can be greatly improved, and the spectrum efficiency can also be greatly improved. However, under...

AI Technical Summary

Problems solved by technology

[0004] 2) Resource management is more difficult

There are fewer interactive functions between multiple MCEs, which increases the difficulty of resource management

[0005] 3) The dynamic control function of the MBMS area is difficult to realize

MBMS communication in traditional networks uses a static MBMS network networking method based on O&M (operation and maintenance) configuration. This method is simple to operate, but less flexible

Since the traditional MBMS service does not return information, the network dynamic control function is difficult to realize

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