Autonomous queue management method based on context awareness

A queue management and context technology, applied in the field of autonomous queue management, to simplify complexity and improve transmission quality

Inactive Publication Date: 2010-10-13
BEIJING UNIV OF POSTS & TELECOMM
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  • Autonomous queue management method based on context awareness
  • Autonomous queue management method based on context awareness
  • Autonomous queue management method based on context awareness

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[0048] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and an embodiment of a video stream encoded in MPEG4 format over a network.

[0049] The present invention is a method of autonomous queue management based on context awareness. The embodiment of the method is that the source host of the service, that is, the streaming media server, first distinguishes the priority of each video packet according to the application layer semantics to the video stream, and the network Pre-marking is performed when the packets are encapsulated in the layer; when the video stream arrives at the entrance of the differentiated service DiffServ network, the ingress edge routing node maps the pre-marked semantic priority of each video packet to the network priority according to the set strategy; then route by the edge Nodes and core routing n...

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Abstract

The invention relates to an autonomous queue management method based on context awareness, comprising the following steps of: firstly, distinguishing the priority of each subgroup of service flow according to the semanteme of an application layer by a service source-end host, and premarking when a network layer is packaged and grouped; when the service flow reaches the entrance of a DiffServ network, mapping the premarked semanteme priority of each subgroup into network priority by the edge route node of the entrance according to a set strategy; then respectively executing the autonomous queue management operations of autonomous control cycles comprising awareness, analysis, decision and execution by the edge route node and a core route node to realize the following functions of correspondingly placing each subgroup into virtual queues with different discard priorities according to the network priority and then carrying out the autonomous management on the virtual queues according to the discard priority of the queues and the context information of the network. An alternative discard mode is adopted to discard the subgroups to ensure that the probability of the transmission success of the subgroups which have higher importance and greatly contributes to service QoS (Quality of Service) in the service flow is higher under the same network congestion state.

Description

Technical field [0001] The present invention relates to a method for autonomous queue management based on context awareness, and to be precise, to a method for autonomous queue management in a differentiated service (Differentiated Service) network that guarantees the quality of service (QoS) of the network Method; belongs to the technical field of the Internet. Background technique [0002] Queue management is an effective method to support congestion control and improve service quality in routing nodes, and it has become one of the hotspots in Internet technology research. In 1993, Sally Floyd et al. proposed the Random Early Detection (RED) algorithm, and also proposed a new direction of network research: Active Queue Management (AQM). Due to the burstiness of Internet transmission and the shortcomings of the queue management method using drop tail DT (Drop Tail), in 1998, IETF RFC 2309 recommended the use of AQM method in routing nodes, thus setting off research on AQM inter...

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Application Information

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IPC IPC(8): H04L12/56H04L47/32H04L47/6275
Inventor 龚向阳王文东阙喜戎李岩张海燕
Owner BEIJING UNIV OF POSTS & TELECOMM
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