CN101917402A - Power dispatching cloud consultation method and device for guaranteeing safety - Google Patents
Power dispatching cloud consultation method and device for guaranteeing safety Download PDFInfo
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Abstract
The invention discloses power dispatching cloud consultation method and device for guaranteeing safety by comprehensively applying the technologies of video consultation with could compute, cloud consultation, safety, non obstructive and high definition, wireless communication network and the like. The invention realizes the non obstructive of power dispatching message flow events by a stochastic service queuing theory mathematical method and 6-class priority queue rules, the safety restraint by integrating physical protection, logic protection and safety management measures, and high definition video flow and slide show images displaying 1080p (20CIF) through a high-speed communication network., so as to achieve the resource sharing of cloud end equipment such as a projector and various display screens, and complete a power dispatching dynamic cloud consultation system for guaranteeing safety. The invention serves intelligent power grids and promotes the development of intelligent dispatching panorama visualization.
Description
Technical field
The invention belongs to power domain, serve intelligent grid, be specifically related to the intelligent field of power scheduling, comprehensive cloud computing, cloud are held a conference or consultation, fail safe, non-blocking, high sharpness video is held a conference or consultation and the cordless communication network technology, has proposed a kind of power dispatching cloud consultation method that guarantees safety and device.
Background technology
Cloud computing is the new term of a comparative heat, and resource pool is called " cloud ", and the scale of cloud can dynamic retractility, and blur on its border; Cloud is fluid aloft, can't also need not to determine its particular location, but it is present in the somewhere really." cloud " is that some can self and the virtual computational resource of management, is generally some large server clusters, comprises calculation server, storage server, broadband resource or the like.Cloud computing puts together all computational resources, and realizes management automatically by software, need not artificial participation.Cloud computing (Cloud Computing) is the development of parallel computation (Parallel Computing), Distributed Calculation (Distributed Computing) and grid computing (Grid Computing), or perhaps the commerce of these computer science notions realizes.Cloud computing is the result that virtual (Virtualization), effectiveness are calculated (Utility Computing), IaaS (infrastructure is promptly served), PaaS (platform is promptly served), the mixing evolution of SaaS notions such as (software are promptly served) and risen to.Current popular typical cloud computing solution comprises Google cloud computing, Amazon cloud computing, Salesforce cloud computing, Yunan County's congruence.
Provide the ability of uploading as required, make up, dispose, dispatch, managing and reporting business service based on using a model of Self-Service for the user.Simultaneously, many more to the Self-Service that the user provides, necessary operation management activity is just few more.Based on the theory of this kind cloud computing, in the panorama visible process is held a conference or consultation in power scheduling, demonstration is represented " cloud " and change, and the Bindery security constraint, the present invention proposes a kind of power dispatching cloud consultation method that guarantees safety and device.Building intelligent grid is the common selection that following challenge is responded actively in International Power industry, and power scheduling is the important step of intelligent grid.In the intelligentized process of power scheduling, the panorama visibleization that power scheduling is held a conference or consultation requires more and more higher.The objective of the invention is to realize the demonstration that power scheduling is held a conference or consultation and represent " cloud " to change, realize showing and the resource-sharing that represents, and ensure its fail safe.
Though present power scheduling consultation system has voice consultation system, the video council quotient system various ways such as net true consultation system etc. of unifying, and has following 6 deficiencies.One must could realize that voice, video or net really hold a conference or consultation in the specific chamber of holding a conference or consultation; Its two, the demonstration of holding a conference or consultation will realize showing with the demand that represents resource-sharing outstanding with to represent equipment idle or earn simultaneously and rob use; Its three, if the spokesman need represent the information in the notebook personal computer, then plug projecting apparatus line/display screen line bothers very much, and the Signal plug/seat and the cable easy break-down thereof of computer, projecting apparatus/display screen, influences the process of holding a conference or consultation; Its four, can't under the prerequisite that guarantees safety, mix the wired and wireless technology of holding a conference or consultation of using; Its five, can't realize spokesman's self-help model, and more can't realize spokesman's self-help model under the situation that in process is held a conference or consultation in power scheduling, has personnel to add successively; Its six, can't be implemented in power scheduling and hold a conference or consultation and take into account 2 kinds of patterns simultaneously in the process, be i.e. spokesman's self-help model and host's pattern.Method and apparatus of the present invention can overcome above 6 deficiencies, and one has device, projecting apparatus/display screen and the computer of invention, does not impose the well-equipped chamber of holding a conference or consultation, and at common meeting room, can realize the power dispatching cloud consultation that guarantees safety; Its two, reach the resource-sharing of the high in the clouds equipment that constitutes by projecting apparatus and all kinds of display screens etc.; Its three, power dispatching cloud consultation stream is by wireless or/and cable LAN, is connected with spokesman's computer with lan line to get final product; Its four, power dispatching cloud consultation stream can pass through WLAN (wireless local area network) or cable LAN, also the hybrid network to form by WLAN (wireless local area network) and cable LAN realizes power dispatching cloud consultation under the prerequisite that guarantees safety; Its five, can realize spokesman's self-help model, and also can realize spokesman's self-help model under the situation that in process is held a conference or consultation in power scheduling, has personnel to add successively; Its six, can be implemented in power scheduling and hold a conference or consultation and take into account 2 kinds of patterns simultaneously in the process, be i.e. spokesman's self-help model and host's pattern.
Summary of the invention
The present invention serves intelligent grid by means of the theory of cloud computing, promotes the development of intelligent scheduling panorama visibleization, to realize showing that the resource-sharing with representing is a target.The present invention proposes the hold a conference or consultation notion of (Cloud Dynamic Consultation) of cloud, integrated application cloud computing, cloud are held a conference or consultation, fail safe, non-blocking, high sharpness video is held a conference or consultation and technology such as cordless communication network, has submitted a kind of power dispatching cloud consultation method that guarantees safety and device to.And provided the specific embodiment of the present invention example---the power scheduling dynamic cloud consultation system that guarantees safety.
The present invention is by serving the non-blocking of queueing theory mathematical method realization power scheduling message flow incident at random, realize security constraint by integrated cryptographic protocol and authentication protocol, realize showing high sharpness video stream and the magic lantern image of 720p (9CIF) and 1080p (20CIF) by high-speed communicating network.Reach the resource-sharing of the high in the clouds equipment that constitutes by projecting apparatus and all kinds of display screens etc., finish and construct the power scheduling dynamic cloud consultation system that guarantees safety.Serve intelligent grid, promote the development of intelligent scheduling panorama visibleization.
A kind of power dispatching cloud consultation method that guarantees safety that the present invention proposes is characterized in that may further comprise the steps:
(1) guarantees safety
S2.1 physical protection: user safety authentication card, the control of wireless device transmitting power, directed beam antenna, build the protection isolation boundary with many wireless device co-channel interference devices;
S2.2 logic protection: the related authentication in IP address, encryption, digital signature with MAC Address;
S2.3 safety management measure: supervision, control, calamity are equipped with, emergency services;
(2) clog-free
S3.1 personnel participating in the meeting's registration: participate in personnel's registration of power dispatching cloud consultation, comprise name, unit, department, post, IP address, MAC Address, submission subject under discussion and content;
Whether S3.2 has the host, if do not have then that S3.3 enters spokesman's self-help model, if there is then S3.10 enter host's pattern of holding a conference or consultation;
S3.3 spokesman self-help model;
Whether S3.4 has host's mode request, if there is not a then S3.5, if there is then S3.10 enter host's pattern of holding a conference or consultation;
The S3.5 priority rule is chosen;
Whether S3.6 has the priority rule conversion, if there is not then S3.7, if then S3.5 is arranged;
S3.7 determines spokesman and order thereof according to priority rule;
The S3.8 spokesman uses cloud to hold a conference or consultation, and sends high definition video conferencing stream, on deliver to and show high in the clouds;
Whether S3.9 finishes or has the people to require to interrupt, if there is not then S3.7, if then S3.4 is arranged;
The S3.10 host pattern of holding a conference or consultation;
Whether the S3.11 host declares the closing of, and S3.12 then if not is if then finish;
Whether the S3.12 host specifies use, and if S3.13 then if not is S3.15 then;
S3.13 spokesman application;
The S3.14 host be confirmed to be deny can, if S3.13 then if not is S3.15 then;
The S3.15 spokesman uses cloud to hold a conference or consultation, and sends high definition video conferencing stream, on deliver to and show high in the clouds;
Whether S3.16 finishes or has the people to require to interrupt, if there is not then S3.15, if then S3.11 is arranged;
(3) show high definition
Correspondence is held a conference or consultation and is showed the high definition video conferencing stream of every road 720p to improve quality, and comprises following 2 steps:
Construct IP network: the full-duplex bandwidth wired and/or network that wireless transfer channel constitutes is not less than 33Mbps; Show that high definition comprises the high definition video conferencing of presentation device support 720p to improve quality of holding a conference or consultation of projecting apparatus and display screen; Wherein, step S3.5 priority rule comprises following 6 classes:
One, according to the submission subject under discussion and the content of personnel participating in the meeting's registration, importance is descending, determines priority query;
Its two, according to the application time order of personnel participating in the meeting registration, { Xi} has Markov character, determines priority query to utilize queueing theory discrete time random process;
Its three, according to the unit sequence of personnel participating in the meeting registration, determine priority query;
Its four, according to department's specialty sequence of personnel participating in the meeting registration, determine priority query;
Its five, according to the post and the name sequence of personnel participating in the meeting registration, post is descending, according to name lexicographic order, determines priority query with post;
They are six years old, when having personnel to add in the power dispatching cloud consultation process successively to hold a conference or consultation, application is served the queueing theory mathematical method at random and determined that priority query's rule is: serving (LCFS) to elder generation after the emergency event is the M/M/c/LCFS model, important issue and content band Priority Service power (PR) are the M/M/c/PR model, it is the M/M/c/SIRO model that inferior important issue and content are served (SIRO) at random, and adopting First Come First Served (FCFS) in remaining general subject under discussion and the properties collection is the M/M/c/PR model;
Wherein, described (2) are clog-free to be the service feature at random of holding a conference or consultation according to the intelligentized cloud of power scheduling, utilizes the queueing theory mathematical method, sets up Mathematical Modeling, comprising:
If total c the cloud magic lantern of holding a conference or consultation, the average service rate of the cloud magic lantern that each need be held a conference or consultation is u, and under normal circumstances, the average arrival rate of power scheduling message flow incident is λ, and then the Δ t probability that has a power scheduling message flow incident to arrive in the time is P
1=λ Δ t, the probability that a power scheduling message flow event exit was arranged in the Δ t time is q
1=λ Δ t;
Divide following three kinds of situations:
(4) when unregulated power scheduling message stream incident, the probability of three kinds of mutually exclusive events is respectively:
(a) do not have power scheduling message flow event queuing in time t, the probability that Δ t does not have power scheduling message flow incident to arrive constantly yet is P
0(1-λ Δ t);
(b) a power scheduling message flow incident is arranged in time t, do not have power scheduling message flow incident to arrive in the Δ t, but the probability that has a power scheduling message flow incident to accept to leave away after cloud is held a conference or consultation is P
1(1-λ Δ t) u Δ t;
(c) do not have power scheduling message flow event queuing in time t, but have a power scheduling message flow incident to arrive constantly at Δ t, the probability that also has a power scheduling message flow incident to accept to leave away after cloud is held a conference or consultation is P
0λ Δ tu Δ t;
P then
0=P
0(1-λ Δ t)+P
1(1-λ Δ t) u Δ t+P
0λ u (Δ t)
2
Omit second order in a small amount, put in order P
1=λ P
0/ u;
(5), during and 1≤n＜c, can be divided into following four kinds of situations when existing n power scheduling message flow incident:
(a) n-1 power scheduling message flow incident arranged in queuing in the time t, Δ t has a power scheduling message flow incident to arrive constantly, but is P without any the probability that power scheduling message flow incident is held a conference or consultation by cloud
N-1λ Δ t (1-nu Δ t);
(b) n+1 power scheduling message flow incident arranged in queuing in the time t, Δ t does not have power scheduling message flow incident to arrive constantly, but the probability that has a power scheduling message flow incident to accept to leave away after cloud is held a conference or consultation is P
N+1(1-λ Δ t) [(n+1) u Δ t];
(c) n power scheduling message flow incident arranged in queuing in the time t, Δ t does not have power scheduling message flow incident to arrive constantly, and also the probability of being held a conference or consultation by cloud without any power scheduling message flow incident is P
n(1-λ Δ t) (1-nu Δ t);
(d) n power scheduling message flow incident arranged in queuing in the time t, Δ t has a power scheduling message flow incident to arrive constantly, and the probability that also has a power scheduling message flow incident to accept to leave away after cloud is held a conference or consultation is P
nλ Δ tnu Δ t;
(6) during power scheduling message flow event number n 〉=c, similar with situation (2), but corresponding probability is respectively:
(a)P
n-1(λΔt)(1-cμΔt)
(b)P
n+1(1-λΔt)(cμΔt)
(c)P
n(1-λΔt)(1-cμΔt)
(d)P
n(λΔt)cμΔt
Obtain by top formula:
The probability of stability that solves system is:
Have only when λ/c μ＜1, just can make the cloud magic lantern service system of holding a conference or consultation reach stable state and can not line up unlimited formation, the service intensity of the cloud magic lantern system that holds a conference or consultation is
The utilance of the cloud magic lantern system that promptly holds a conference or consultation;
The service rate of the cloud magic lantern system that holds a conference or consultation is:
Promptly (during the individual power scheduling message flow incident of n＜c), the service rate of system is n μ when n is arranged in the system; When c power scheduling message flow incident arranged in the system, the service rate of system reached maximum c μ; When the power scheduling message flow event number in the system surpassed c, because c information desk all hurried in, all the other power scheduling message flow incidents must be lined up, and service rate at this moment still is c μ; Can get thus,
Power scheduling message flow event queuing length in the system is
The mean waiting time of power scheduling message flow incident in system is
The average waiting time of power scheduling message flow incident in system
Average electric power scheduling message stream event number in the system
Wherein, defined parameters is:
L
q: the average queue length in the system;
Wq: the mean waiting time of power scheduling message flow incident in system, each power scheduling message flow incident is all wished short more during this period of time good more;
W
S: the average waiting time of power scheduling message flow incident in system;
L
S: the average electric power scheduling message stream event number in the system;
λ: average arrival rate;
μ: average service rate;
C: the number of the cloud magic lantern of holding a conference or consultation in parallel in the system;
ρ: service intensity, i.e. average service time in each cloud magic lantern unit interval of holding a conference or consultation;
P
0: the probability of stability of system.
The invention allows for the device that uses said method, its feature comprises following 8 kinds:
One, step guarantee safety and choke free being implemented in the security administration server realized;
They are two years old, wireless server is supported IEEE 802.11b/g and 100M LAN interface, has the signaling interface that is connected with the projecting apparatus/display screen of improving quality with 720p, and built-in H.264 soft decoder software, supporting dhcp server functionality, can be client computer distributing IP address automatically;
Its three, the computer of participating in power dispatching cloud consultation is installed the cloud client software of holding a conference or consultation, this software comprises the step of claim 1-2 and soft encoding software H.264;
They are four years old, at the cable LAN application scenarios, the computer cloud can quotient group converge by common Ethernet switch, be connected to wireless server through ethernet line, wireless server attachment security management server and 720p projecting apparatus/display screen to improve quality, finish the demonstration that power scheduling holds a conference or consultation and change, realize showing and the resource-sharing that represents, and ensure its fail safe with representing " cloud ";
They are five years old, at the WLAN (wireless local area network) application scenarios, the computer cloud can quotient group pass through its internal or external wireless LAN card, through wireless IEEE 802.11b/g agreement, be connected to wireless server, wireless server attachment security management server and the 720p projecting apparatus/display screen to improve quality is finished demonstration that power scheduling holds a conference or consultation and is represented " cloud " and change, realize showing and the resource-sharing that represents, and ensure its fail safe;
They are six years old, hybrid network application scenarios at WLAN (wireless local area network) and cable LAN composition, computer cloud meeting quotient group is by wired or wireless LAN card, wired scene converges by common Ethernet switch, be connected to wireless server, wireless server attachment security management server and the 720p projecting apparatus/display screen to improve quality is finished demonstration that power scheduling holds a conference or consultation and is represented " cloud " and change, realize showing and the resource-sharing that represents, and ensure its fail safe;
Its seven, the computer of participating in power dispatching cloud consultation can be notebook, desktop computer or server cluster;
They are eight years old, build the protection isolation boundary with many co-channel interference devices, specific practice is: make the wireless coverage radius of the wireless coverage radius of co-channel interference device less than wireless server, in power dispatching cloud consultation meeting-place week out-of-bounds around the border of the wireless coverage radius of 1 co-channel interference device, build the protection isolation boundary with many co-channel interference devices, the spacing of adjacent co-channel interference device is the wireless coverage radius of 1 co-channel interference device.
Description of drawings
In order to make content of the present invention by clearer understanding, and be convenient to the description of embodiment, it is as follows to provide description of drawings related to the present invention below:
Fig. 1 is the structural representation of device of the present invention;
Fig. 2 is the cloud of the present invention process prescription figure that holds a conference or consultation;
Fig. 3 is the cloud of the present invention process power scheduling message flow probability of happening characteristic pattern of holding a conference or consultation;
Fig. 4 is a video resolution classification chart of the present invention;
Fig. 5 is a video resolution comparison diagram of the present invention;
Fig. 6 is the structural representation of the device of specific embodiments of the invention one;
Fig. 7 is the structural representation of the device of specific embodiments of the invention two;
Fig. 8 is the structural representation of the device of specific embodiments of the invention three;
Fig. 9 is the structural representation of the device of specific embodiments of the invention four;
Figure 10 is the schematic flow sheet according to clog-free step in the method for the present invention;
Figure 11 is the enforcement illustration that many co-channel interference devices of usefulness of the present invention are built the protection isolation boundary.
Embodiment
Device implementation figure of the present invention sees Fig. 1, specifies as follows.
Construct WLAN (wireless local area network) by IEEE 802.11b/g Wireless Telecom Equipment, simultaneously also can construct cable LAN by netting twine or optical cable, Centroid with star topology connects demonstration and represents cloud (concrete high in the clouds equipment comprises projecting apparatus and all kinds of display screens etc.), and other nodes connections participate in each Terminal Type (for example notebook, desktop computer, server cluster) that the power scheduling dynamic cloud is held a conference or consultation.Simultaneously, the built-in method of the present invention of security administration server, the high definition by the topological structure Centroid is managed fail safe, non-blocking and the video flowing of whole power scheduling dynamic cloud consultation system ensures the resource-sharing of high in the clouds equipment.Wherein, computer can be connected with Centroid by built-in radio communication network interface card or external Wireless Telecom Equipment with server cluster, also can be connected with Centroid by cable LAN, power scheduling message flow incident is delivered to the high in the clouds equipment that is made of projecting apparatus and all kinds of display screens etc., show dynamically and represent.
The soluble concrete technical problem of the present invention is exemplified below.
When having only 1 projecting apparatus, participate in electric power scheduling meeting chamber of commerce view the often many people of meeting room, the notebook computer of oneself need be connected to projecting apparatus in turn, plug projecting apparatus line bothers very much.Can address this problem easily by the present invention.Fig. 7 is specific embodiments of the invention one.Wireless cloud is held a conference or consultation as follows.On a Daepori energising brain security administration server software is installed, ethernet line is connected to wireless server.Wireless server connects the projecting apparatus/display screen of 1080p quality, participates in computer that cloud holds a conference or consultation for every the cloud client software of holding a conference or consultation is installed, and be connected with wireless server by its wireless LAN card, finishes wireless cloud and holds a conference or consultation.
When having only 1 available display screen and do not use under the situation of switching matrix, the power scheduling that many people the participate in meeting of holding a conference or consultation need be connected to display screen with the notebook computer of oneself in turn, and plug display screen line bothers very much.Can address this problem easily by the present invention.Fig. 8 is specific embodiments of the invention two.
When having only 1 projecting apparatus, the chamber of holding a conference or consultation possesses the cable LAN condition, can realize easily that by the present invention projecting apparatus is shared.Fig. 9 is specific embodiments of the invention three.Wired cloud is held a conference or consultation as follows.On a Daepori energising brain security administration server software is installed, ethernet line is connected to wireless server.Wireless server connects the projecting apparatus/display screen of 1080p quality, participate in computer that cloud holds a conference or consultation for every the cloud client software of holding a conference or consultation is installed, and pass through common Ethernet switch by its wired lan card and converge, be connected to wireless server, finish wired cloud and hold a conference or consultation.
When having only 1 projecting apparatus, the chamber of holding a conference or consultation possesses the cable LAN condition, and the part computer can quotient group possess supports the IEEE802.11b/g wireless lan function, wired and wirelessly can mix use, can realize easily that by the present invention projecting apparatus is shared.Figure 10 is specific embodiments of the invention four.Wired and wireless hybrid network cloud is held a conference or consultation as follows.On a Daepori energising brain security administration server software is installed, ethernet line is connected to wireless server.Wireless server connects the projecting apparatus/display screen of 1080p quality, participates in computer that cloud holds a conference or consultation for every the cloud client software of holding a conference or consultation is installed.Wired mode converges through common Ethernet switch by its wired lan card, is connected to wireless server, finishes wired cloud and holds a conference or consultation.Wireless mode is connected with wireless server by its wireless LAN card, finishes wireless cloud and holds a conference or consultation.
Above by special embodiment content description the present invention, but those skilled in the art also can recognize the multiple possibility of modification and optional embodiment, for example, by combination and/or change the feature of single embodiment.Therefore, be understandable that these modification and optional embodiment will be considered as included among the present invention, only enclosed patent claims of scope of the present invention and coordinate restriction thereof.
Claims (4)
1. power dispatching cloud consultation method that guarantees safety is characterized in that may further comprise the steps:
(1) guarantees safety
S2.1 physical protection: user safety authentication card, the control of wireless device transmitting power, directed beam antenna, build the protection isolation boundary with many wireless device co-channel interference devices;
S2.2 logic protection: the related authentication in IP address, encryption, digital signature with MAC Address;
S2.3 safety management measure: supervision, control, calamity are equipped with, emergency services;
(2) clog-free
S3.1 personnel participating in the meeting's registration: participate in personnel's registration of power dispatching cloud consultation, comprise name, unit, department, post, IP address, MAC Address, submission subject under discussion and content;
Whether S3.2 has the host, if do not have then that S3.3 enters spokesman's self-help model, if there is then S3.10 enter host's pattern of holding a conference or consultation;
S3.3 spokesman self-help model;
Whether S3.4 has host's mode request, if there is not a then S3.5, if there is then S3.10 enter host's pattern of holding a conference or consultation;
The S3.5 priority rule is chosen;
Whether S3.6 has the priority rule conversion, if there is not then S3.7, if then S3.5 is arranged;
S3.7 determines spokesman and order thereof according to priority rule;
The S3.8 spokesman uses cloud to hold a conference or consultation, and sends high definition video conferencing stream, on deliver to and show high in the clouds;
Whether S3.9 finishes or has the people to require to interrupt, if there is not then S3.7, if then S3.4 is arranged;
The S3.10 host pattern of holding a conference or consultation;
Whether the S3.11 host declares the closing of, and S3.12 then if not is if then finish;
Whether the S3.12 host specifies use, and if S3.13 then if not is S3.15 then;
S3.13 spokesman application;
The S3.14 host be confirmed to be deny can, if S3.13 then if not is S3.15 then;
The S3.15 spokesman uses cloud to hold a conference or consultation, and sends high definition video conferencing stream, on deliver to and show high in the clouds;
Whether S3.16 finishes or has the people to require to interrupt, if there is not then S3.15, if then S3.11 is arranged;
(3) show high definition
Correspondence is held a conference or consultation and is showed the high definition video conferencing stream of every road 720p to improve quality, and comprises following 2 steps:
Construct IP network: the full-duplex bandwidth wired and/or network that wireless transfer channel constitutes is not less than 33Mbps;
Show high definition: the presentation device of holding a conference or consultation that comprises projecting apparatus and display screen is supported the high definition video conferencing of 720p to improve quality.
2. the method for claim 1 is characterized in that step S3.5 priority rule comprises following 6 classes:
One, according to the submission subject under discussion and the content of personnel participating in the meeting's registration, importance is descending, determines priority query;
Its two, according to the application time order of personnel participating in the meeting registration, { Xi} has Markov character, determines priority query to utilize queueing theory discrete time random process;
Its three, according to the unit sequence of personnel participating in the meeting registration, determine priority query;
Its four, according to department's specialty sequence of personnel participating in the meeting registration, determine priority query;
Its five, according to the post and the name sequence of personnel participating in the meeting registration, post is descending, according to name lexicographic order, determines priority query with post;
They are six years old, when having personnel to add in the power dispatching cloud consultation process successively to hold a conference or consultation, application is served the queueing theory mathematical method at random and determined that priority query's rule is: serving (LCFS) to elder generation after the emergency event is the M/M/c/LCFS model, important issue and content band Priority Service power (PR) are the M/M/c/PR model, it is the M/M/c/SIRO model that inferior important issue and content are served (SIRO) at random, and adopting First Come First Served (FCFS) in remaining general subject under discussion and the properties collection is the M/M/c/PR model.
3. method as claimed in claim 1 or 2, it is characterized in that described (2) clog-free be the service feature at random of holding a conference or consultation according to the intelligentized cloud of power scheduling, utilize the queueing theory mathematical method, set up Mathematical Modeling, comprising:
If total c the cloud magic lantern of holding a conference or consultation, the average service rate of the cloud magic lantern that each need be held a conference or consultation is u, and under normal circumstances, the average arrival rate of power scheduling message flow incident is λ, and then the Δ t probability that has a power scheduling message flow incident to arrive in the time is P
1=λ Δ t, the probability that a power scheduling message flow event exit was arranged in the Δ t time is q
1=λ Δ t;
Divide following three kinds of situations:
(1) when unregulated power scheduling message stream incident, the probability of three kinds of mutually exclusive events is respectively:
(a) do not have power scheduling message flow event queuing in time t, the probability that Δ t does not have power scheduling message flow incident to arrive constantly yet is P
0(1-λ Δ t);
(b) a power scheduling message flow incident is arranged in time t, do not have power scheduling message flow incident to arrive in the Δ t, but the probability that has a power scheduling message flow incident to accept to leave away after cloud is held a conference or consultation is P
1(1-λ Δ t) u Δ t;
(c) do not have power scheduling message flow event queuing in time t, but have a power scheduling message flow incident to arrive constantly at Δ t, the probability that also has a power scheduling message flow incident to accept to leave away after cloud is held a conference or consultation is P
0λ Δ tu Δ t;
P then
0=P
0(1-λ Δ t)+P
1(1-λ Δ t) u Δ t+P
0λ u (Δ t)
2
Omit second order in a small amount, put in order P
1=λ P
0/ u;
(2), during and 1≤n＜c, can be divided into following four kinds of situations when existing n power scheduling message flow incident:
(a) n-1 power scheduling message flow incident arranged in queuing in the time t, Δ t has a power scheduling message flow incident to arrive constantly, but is P without any the probability that power scheduling message flow incident is held a conference or consultation by cloud
N-1λ Δ t (1-nu Δ t);
(b) n+1 power scheduling message flow incident arranged in queuing in the time t, Δ t does not have power scheduling message flow incident to arrive constantly, but the probability that has a power scheduling message flow incident to accept to leave away after cloud is held a conference or consultation is P
N+1(1-λ Δ t) [(n+1) u Δ t];
(c) n power scheduling message flow incident arranged in queuing in the time t, Δ t does not have power scheduling message flow incident to arrive constantly, and also the probability of being held a conference or consultation by cloud without any power scheduling message flow incident is P
n(1-λ Δ t) (1-nu Δ t);
(d) n power scheduling message flow incident arranged in queuing in the time t, Δ t has a power scheduling message flow incident to arrive constantly, and the probability that also has a power scheduling message flow incident to accept to leave away after cloud is held a conference or consultation is P
nλ Δ tnu Δ t;
(3) during power scheduling message flow event number n 〉=c, similar with situation (2), but corresponding probability is respectively:
(a)P
n-1(λΔt)(1-cμΔt)
(b)P
n+1(1-λΔt)(cμΔt)
(c)P
n(1-λΔt)(1-cμΔt)
(d)P
n(λΔt)cμΔt
Obtain by top formula:
The probability of stability that solves system is:
Have only when λ/c μ＜1, just can make the cloud magic lantern service system of holding a conference or consultation reach stable state and can not line up unlimited formation, the service intensity of the cloud magic lantern system that holds a conference or consultation is
The utilance of the cloud magic lantern system that promptly holds a conference or consultation;
The service rate of the cloud magic lantern system that holds a conference or consultation is:
Promptly (during the individual power scheduling message flow incident of n＜c), the service rate of system is n μ when n is arranged in the system; When c power scheduling message flow incident arranged in the system, the service rate of system reached maximum c μ; When the power scheduling message flow event number in the system surpassed c, because c information desk all hurried in, all the other power scheduling message flow incidents must be lined up, and service rate at this moment still is c μ;
Can get thus,
Power scheduling message flow event queuing length in the system is
The mean waiting time of power scheduling message flow incident in system is
The average waiting time of power scheduling message flow incident in system
Average electric power scheduling message stream event number in the system
Wherein, defined parameters is:
L
q: the average queue length in the system;
Wq: the mean waiting time of power scheduling message flow incident in system, each power scheduling message flow incident is all wished short more during this period of time good more;
W
S: the average waiting time of power scheduling message flow incident in system;
L
S: the average electric power scheduling message stream event number in the system;
λ: average arrival rate;
μ: average service rate;
C: the number of the cloud magic lantern of holding a conference or consultation in parallel in the system;
ρ: service intensity, i.e. average service time in each cloud magic lantern unit interval of holding a conference or consultation;
P
0: the probability of stability of system.
4. device that uses the arbitrary described method of claim 1-3, its feature comprises following 8 kinds:
One, step guarantee safety and choke free being implemented in the security administration server realized;
They are two years old, wireless server is supported IEEE 802.11b/g and 100M LAN interface, has the signaling interface that is connected with the projecting apparatus/display screen of improving quality with 720p, and built-in H.264 soft decoder software, supporting dhcp server functionality, can be client computer distributing IP address automatically;
Its three, the computer of participating in power dispatching cloud consultation is installed the cloud client software of holding a conference or consultation, this software comprises the step of claim 1-2 and soft encoding software H.264;
They are four years old, at the cable LAN application scenarios, the computer cloud can quotient group converge by common Ethernet switch, be connected to wireless server through ethernet line, wireless server attachment security management server and 720p projecting apparatus/display screen to improve quality, finish the demonstration that power scheduling holds a conference or consultation and change, realize showing and the resource-sharing that represents, and ensure its fail safe with representing " cloud ";
They are five years old, at the WLAN (wireless local area network) application scenarios, the computer cloud can quotient group pass through its internal or external wireless LAN card, through wireless IEEE 802.11b/g agreement, be connected to wireless server, wireless server attachment security management server and the 720p projecting apparatus/display screen to improve quality is finished demonstration that power scheduling holds a conference or consultation and is represented " cloud " and change, realize showing and the resource-sharing that represents, and ensure its fail safe;
They are six years old, hybrid network application scenarios at WLAN (wireless local area network) and cable LAN composition, computer cloud meeting quotient group is by wired or wireless LAN card, wired scene converges by common Ethernet switch, be connected to wireless server, wireless server attachment security management server and the 720p projecting apparatus/display screen to improve quality is finished demonstration that power scheduling holds a conference or consultation and is represented " cloud " and change, realize showing and the resource-sharing that represents, and ensure its fail safe;
Its seven, the computer of participating in power dispatching cloud consultation can be notebook, desktop computer or server cluster;
They are eight years old, build the protection isolation boundary with many co-channel interference devices, specific practice is: make the wireless coverage radius of the wireless coverage radius of co-channel interference device less than wireless server, in power dispatching cloud consultation meeting-place week out-of-bounds around the border of the wireless coverage radius of 1 co-channel interference device, build the protection isolation boundary with many co-channel interference devices, the spacing of adjacent co-channel interference device is the wireless coverage radius of 1 co-channel interference device.
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