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SDN-based mbms network architecture and network optimization method

A network optimization and network architecture technology, applied in network planning, wireless communication, broadcast service distribution, etc., can solve the problems of increasing difficulty in resource management, difficulty in realizing network dynamic control functions, and poor flexibility, so as to reduce the cost of time and signaling consumption, realize MBMS synchronous transmission, and reduce the effect of complexity

Inactive Publication Date: 2019-08-09
XIAN UNIV OF SCI & TECH
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  • Application Information

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

Method used

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  • SDN-based mbms network architecture and network optimization method
  • SDN-based mbms network architecture and network optimization method

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Embodiment 1

[0064] The MBMS network area contains 3 types of cells. The first type of cell, which transmits data and signaling information at the same time, is called the Transmitting and Advertising Cell (TAC). The second type of cell only transmits data information, and is called a Transmitting-Only Cell (TOC). The third type is a reserved cell, which does not transmit data and signaling information, and is called a reserved cell (RC, Reserved Cell). Under the SDN architecture, the multicast data in the MBMS network passes through the SDN core network, MCE, and base station, and is finally transmitted to users. All base stations simultaneously transmit the same group of multicast data with the same time-frequency resources, and the user combines these signals. Under the SDN architecture, the function of MCE is weakened, and the SDN control center is responsible for the information acquisition and control functions between base stations in the MBMS network.

[0065] The following is an e...

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Abstract

The invention discloses an SDN-based MBMS network architecture, including OpenFlow API, matrix collection module, OpenFlow plug-in, coordination interface, MBMS network dynamic optimization coordination module, network optimization module, path optimization management module, network resource management module, topology relationship Mapping module and emergency problem handling module. The invention also discloses a method for optimizing the MBMS network by adopting the SDN-based MBMS network architecture. The invention introduces the SDN technology into the core network of the traditional cellular network, provides an SDN-based MBMS network architecture and realizes MBMS transmission, reduces the difficulty of MBMS communication resource management, and realizes the dynamic control function of the MBMS network.

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, Multimedia Broadcast Multicast Service) is a technology that simultaneously sends 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 the configuration and communication be performed in a single cell unit, but also a multi-cell coordinated transmission method 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/06H04W16/18H04W24/02
CPCH04W4/06H04W16/18H04W24/02
Inventor 龚文熔
Owner XIAN UNIV OF SCI & TECH
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