CN104301750B - A kind of video network management method based on equivalent - Google Patents
A kind of video network management method based on equivalent Download PDFInfo
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- CN104301750B CN104301750B CN201410529148.4A CN201410529148A CN104301750B CN 104301750 B CN104301750 B CN 104301750B CN 201410529148 A CN201410529148 A CN 201410529148A CN 104301750 B CN104301750 B CN 104301750B
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- video
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
- H04N21/2402—Monitoring of the downstream path of the transmission network, e.g. bandwidth available
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64723—Monitoring of network processes or resources, e.g. monitoring of network load
- H04N21/64738—Monitoring network characteristics, e.g. bandwidth, congestion level
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a kind of video network management methods based on equivalent, Servers-all in video network is described with network channel with the video equivalency of unified standard, build video website equivalent diagram, so as to which suitable video be selected to call path, oriented video website equivalent diagram is built according to the direction of video flowing simultaneously, is managed convenient for the rest processing capacity to entire video network.
Description
Technical field
The present invention relates to network resource management technical field, more particularly to a kind of video network management method based on equivalent.
Background technology
In recent years, with the raising of video surveillance applications demand, the successive Large scale construction of digital visual frequency network, an often city
City can build into the medium-sized video network of 2,3 level frameworks, and province's construction is into the Large video net of 4 grades or more frameworks.Digital network by
The bandwidth non-infinite system between the node networked at a distance, so must be managed, arbitrary node of not leaving directly arrives money
Sourcesink host node calls, but needs, by planning, forwarding means, to carry out the management and multiplexing of resource.
The limited image that can only transmit limited way of bandwidth between two adjacent nodes, while the service of forwarding server
Can the also limited image that can only forward limited way, may have different paths because source node where video reaches caller node,
The dynamic for managing forwarding server and network bandwidth is needed to expend situation simultaneously, this problem is attributed to service ability and is passed with passage
Path Setup problem under Movement Capabilities double constraints at present can not carry out the processing capacity of video network effectively to monitor and manage
Reason.Therefore, it is current urgent problem how video network resource to be managed.
The content of the invention
The present invention provides a kind of video network management method based on equivalent for deficiencies of the prior art.
The invention is realized by the following technical scheme：
A kind of video network management method based on equivalent, including step：
S1, using the server in video network as node, network channel is line, calculates the video equivalency of each node, each line
The video equivalency, the video equivalency include：A normal video is defined, the video equivalency of node can handle standard simultaneously for node and regard
The maximum number of frequency, the video equivalency of line by line energy simultaneous transmission normal video maximum number；
S2, each node send the node the video equivalency of itself to every other node and are connected directly with itself when starting
Line the video equivalency, the video equivalency of other nodes of loopback nodes of itself and directly phase respectively after other nodes receive
The video equivalency of line even builds video website equivalent diagram；
S3, the video equivalency of node according to where the video source to be called are selected from node where video source to caller
The path of place node, working as except the video equivalency of every other node and the video of line of node where video source on path
The video equivalency of node where amount is more than video source；
S4, on path according to the node where video source to node where caller order, preengage all sections
The video equivalency of Points And lines is initiated to call after preengaging successfully from node where caller, all section Points And lines on path
The video equivalency of node, fails if all paths are all preengage where the video equivalency subtracts video source, malloc failure malloc；
S5, the video equivalency after the variation of all section Points And lines on path is notified into the every other section in video network
Point updates video website equivalent diagram, and adds in video flowing direction according in the video website equivalent diagram of the direction of calling in the updated；
S6, after calling, the video equivalency of all section Points And lines on path is recovered to original the video equivalency simultaneously
It notifies the every other node in video network, updates video website equivalent diagram.
Preferably, step S4 is further included：If the node reservation failure in path, removes node and selects other nodes
And more new route.
Preferably, the method in selection path includes：The minimum method of cost, shortest path method, the most wide method in path.
The processing capacity of server and network capacity are attributed to the video equivalency by the present invention, convenient for single in same metering
The processing capacity of distinct device is managed under position.Hereafter, the oriented video website equivalent diagram of video network is established, convenient for complete
The rest processing capacity of net carries out real-time management.
Description of the drawings
Shown in FIG. 1 is the oriented video website equivalent diagram of one embodiment of the invention.
Specific embodiment
Below with reference to the attached drawing of the present invention, clear, complete description is carried out to the technical solution in the embodiment of the present invention
And discussion, it is clear that as described herein is only a part of example of the present invention, is not whole examples, based on the present invention
In embodiment, the every other implementation that those of ordinary skill in the art are obtained on the premise of creative work is not made
Example, belongs to protection scope of the present invention.
For the ease of the understanding to the embodiment of the present invention, make further by taking specific embodiment as an example below in conjunction with attached drawing
It illustrates, and each embodiment does not form the restriction to the embodiment of the present invention.
Normal video：Capacity is that (present invention is herein for the H.264 videos of 5 grades of the D1/25FPS/ picture qualities of 2MBPS
For example, technical staff can carry out arbitrary change according to actual conditions).Normal video is known as a video equivalency all the way.
Picture quality is evaluated using 5-degree damage system, as shown in table 1：
| The subjective assessment of picture quality damage | Scoring System |
| Do not perceive on image and damage wound or interference presence | 5 |
| Slightly discernable damage or interference on image, but it is not horrible | 4 |
| There are apparent damage or interference on image, make us feeling disagreeable | 3 |
| There are damage or interference more serious on image, make us quite disliking | 2 |
| There is damage on image or disturb extremely serious, it is impossible to watch | 1 |
Table 1
Server equivalent：Server can forward the maximum number of normal video.Repeating process includes network reception, memory turns
Storage, unpacking, encryption, restructuring, network transmission etc. expend all links of server handling ability.
Network channel equivalent：Network channel can forward the maximum number of normal video.
The use of equivalent is measurement standard after server handling ability and network system processing capacity are carried out homogeneous processing
Can server and network be intuitively subjected to homogeneity management.
The workflow of the present invention is as follows：
S1, using the server in video network as node, network channel is line, and pro rata algorithm or rigorous method calculate
The video equivalency of the video equivalency of each node, each line, identical unit type need to only calculate once；
S2, each node send the node the video equivalency of itself to every other node and are connected directly with itself when starting
Line the video equivalency, the video equivalency of other nodes of loopback nodes of itself and directly phase respectively after other nodes receive
The video equivalency of line even, builds dynamic video website equivalent diagram；
S3, the video equivalency of node according to where the video source to be called are selected from node where video source to caller
The path of place node, working as except the video equivalency of every other node and the video of line of node where video source on path
The video equivalency of node where amount is more than video source, selecting the method in path includes：The minimum method of cost, shortest path method, path
Most wide method；
S4, on path according to the node where video source to node where caller order, preengage all sections
The video equivalency of Points And lines is initiated to call after preengaging successfully from node where caller, all section Points And lines on path
The video equivalency of node where the video equivalency subtracts video source；In view of video website equivalent diagram have update not in time the problem of and
Reservation is caused to fail, then remove the node for preengaging failure from path and other suitable nodes is selected to establish path；If
All paths, which are all preengage, to fail, then malloc failure malloc；
S5, the video equivalency after the variation of all section Points And lines on path is notified into the every other section in video network
Point updates video website equivalent diagram, and adds in video flowing direction according in the video website equivalent diagram of the direction of calling in the updated；
S6, after calling, the video equivalency of all section Points And lines on path is recovered to original the video equivalency simultaneously
It notifies the every other node in video network, updates video website equivalent diagram.
The computational methods of the video equivalency are illustrated below：
Method of proportional computation：
Code stream/normal video the bandwidth of front end equivalence (i.e. the video equivalency of node where video source)=front end output, it is single
Position is：It is a；
Server equivalent (the video equivalencies of other nodes i.e. beyond node where video source)=(i-j)/(Si-Sj) *
90%, wherein Si are the CPU usage readings of i normal video of forwarding；
Network channel equivalent (i.e. the video equivalency of line)=network channel bandwidth/normal video bandwidth；
Rigorous method：
Front end equivalence=(Ci-Cj)/(Si-Sj), wherein Ci be forwarding i head end video CPU usage readings, i/j
Value can be repeatedly converted, gained equivalent is averaged；
Server equivalent=(1-Si-i* (Si-Sj)/(i-j))/((Si-Sj)/(i-j))；
Network channel equivalent=network channel bandwidth/normal video bandwidth.
It please refers to Fig.1, video website equivalent diagram includes tetra- nodes of a, b, c, d, interior joint a sections where video source
Point, the video equivalency 30, node d nodes where caller, node b and c are forward node, and the video equivalency of node b is
The video equivalency of 40, node c are 20.Wherein, the video equivalency of the line between line ab is 33, the video equivalency of the line between line ac
For 35, although the video equivalency of line ab and ac are all more than the 30 of node a, since the video equivalency of node c is less than node a,
Therefore can only selection line ab as path, similarly selection line bd is as path.Assuming that it preengages successfully, then to section since node d
Point a initiates to call, and therefore, the video equivalency of line bd becomes 20, and the video equivalency of node b becomes 10, and the video equivalency of line ab becomes
For 33, the video equivalency of node a becomes 0, and update obtains oriented video website equivalent diagram as shown in Figure 1.After calling,
The video equivalency of occupied section Points And lines is released, so as to update video website equivalent diagram again.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
Subject to.
Claims (1)
1. a kind of video network management method based on equivalent, which is characterized in that including step：
S1, using the server in video network as node, network channel is line, calculates the video equivalency, the video of each line of each node
Equivalent, the video equivalency include：A normal video is defined, the video equivalency of node can handle institute simultaneously for the node
State the maximum number of normal video, the video equivalency of line by the line the maximum number of normal video described in energy simultaneous transmission；
When S2, each node start the node the video equivalency of itself and the line being connected directly with itself are sent to every other node
The video equivalency, the video equivalency of other nodes node of itself described in loopback and straight with it respectively after other described nodes receive
The video equivalency of connected line is connect, builds video website equivalent diagram；
S3, according to where the video source to be called node the video equivalency using include the minimum method of cost, shortest path method and
Method choice including the most wide method in path is from video source place node to the path of node where caller, removing on the path
The video equivalency of the every other node of node where the video source and the video equivalency of line are more than where the video source
The video equivalency of node；
S4, on the path according to the node where the video source to node where caller order, preengage institute
There is the video equivalency of section Points And lines, initiate to call from node where caller after preengaging successfully, all sections on the path
The video equivalency of node where the video equivalency of Points And lines subtracts the video source；If the node reservation in the path is lost
It loses, then remove the node and selects other nodes and update the path；Fail if all paths are all preengage, call mistake
It loses；
S5, the video equivalency after the variation of all section Points And lines on the path is notified it is every other in the video network
Node, updates the video website equivalent diagram, and adds in video flowing according in the video website equivalent diagram of the direction of calling in the updated
Direction；
S6, after calling, the video equivalency of all section Points And lines on the path is recovered to original the video equivalency simultaneously
It notifies the every other node in the video network, updates the video website equivalent diagram.
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| CN104301750B true CN104301750B (en) | 2018-06-01 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1908945A (en) * | 2006-08-24 | 2007-02-07 | 上海交通大学 | Method for implementing mesh based optical mesh emulation platform |
| CN100361445C (en) * | 2004-12-17 | 2008-01-09 | 电子科技大学 | Integrated service leading method for WDM optical network |
-
2014
- 2014-10-08 CN CN201410529148.4A patent/CN104301750B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100361445C (en) * | 2004-12-17 | 2008-01-09 | 电子科技大学 | Integrated service leading method for WDM optical network |
| CN1908945A (en) * | 2006-08-24 | 2007-02-07 | 上海交通大学 | Method for implementing mesh based optical mesh emulation platform |
Non-Patent Citations (1)
| Title |
|---|
| 《网络中QoS路由问题的研究》;张品;《中国博士学位论文全文数据库信息科技辑》;20051115(第7期);1-122 * |
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