Access network flow scheduling system and method based on content

An access network and stream scheduling technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems such as large user interference and inability to solve end-to-end performance problems well

Active Publication Date: 2016-06-22
NANJING UNIV
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  • Claims
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Problems solved by technology

Some of the existing work uses user intervention at the local gateway to schedule traffic. This method interferes a lot with users; and for local networks where downlink traffic is dominant, traffic scheduling at the local site is obviously not a good solution. End-to-end performance issues

Method used

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  • Access network flow scheduling system and method based on content
  • Access network flow scheduling system and method based on content
  • Access network flow scheduling system and method based on content

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Embodiment Construction

[0048] The present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.

[0049] figure 1 A content-based access network flow scheduling system in China, including gateway routers provided by operators for users H1 and H2, SDN centralized controllers, and SDN switches located in the operator's access network; The data packet is deeply inspected to identify the content type corresponding to the data packet, and the data packet is processed and forwarded according to the content type; the SDN centralized controller configures queues on all ports of the SDN switch through the control protocol, and sets forwarding rules; and, periodically Adjust the allocated bandwidth of the video session in order to meet the transmission requirements of the video session with the smallest possible bandwidth; the SDN switch forwards the data packets passed by the gateway router according to the forwarding rules set by the SDN centralized ...

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Abstract

The invention discloses an access network flow scheduling system and method based on content.A software-defined networking (SDN) technology is utilized for opening an access network interface, and the problem that due to the fact that the data transmission needs of multiple types of applications cannot be met through a best mode in a traditional network, user experience is poor through a programmable mode.According to the access network flow scheduling system and method based on content, network flow is divided into three classes, namely, interactive network flow, video flow and other background flow according to the preference of a user to different applications and the transmission needs of the applications, different kinds of network flow are distinguished through application layer information in network data packages, low-delay transmission is provided for the interactive network flow, and a minimum bandwidth is provided for the video network flow to guarantee that the aim of improving the overall network experience of the user in the network is achieved.

Description

technical field [0001] The invention relates to a content-based access network stream scheduling system and a scheduling method thereof, in particular to providing low-delay transmission services for interactive network streams and minimum bandwidth guarantees for video sessions in operator access networks. Background technique [0002] The access network is a channel for users to connect to the Internet (Internet). In this access mode, the user equipment is connected to the Internet through the local gateway router provided by the operator to obtain content or services. With more and more Internet applications and more and more connected devices, operator access network congestion has become more and more serious, seriously affecting the user's network experience. Currently, operators only use bandwidth as an evaluation criterion for service quality, and charge users based on the bandwidth provided. However, the service quality of user experience is closely related to app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/801
CPCH04L47/10H04L47/12
Inventor 王晓亮杨海祥陆桑璐
Owner NANJING UNIV
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