CN101820424A - 3G network-based smart-phone long-distance educational system - Google Patents
3G network-based smart-phone long-distance educational system Download PDFInfo
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Abstract
The invention provides a 3G network-based smart-phone long-distance educational system, which is characterized in that the system comprises an application service module, a P2P streaming media system transmission and control module, a system management module, a service-driving module and a 3G network substrate data transmission module, wherein the application service module is used for realizing the interaction between the system and the user; the P2P streaming media system transmission and control module is used for realizing information data transmission and control; the system management module is used for user management, pedagogical task management, teaching process management and internet security management; the service-driving module is used for handling the effective use of the system when multi-user concurrently visits the system; and the 3G network substrate data transmission module is used for connecting the network substrate. By the cooperative operation of the modules, the system has the characteristics of good mobility, public benefit, practicability and convenience, and the like, breaks the traditional mode of learning, and meets the requirements of the users for learning at any time and anywhere; meanwhile, the system adopts the P2P transmission mode, which guarantees the stability and reliability of data transmission, and improves the transmission rate.
Description
Technical field
The invention belongs to the distance education technique field, particularly relate to a kind of smart-phone long-distance educational system based on 3G network.
Technical background
Modern distance education is a novel education form of utilizing modern information technology means such as network technology, multimedia technology to carry out, it is the Web education that is based upon on the hyundai electronics ICT (information and communication technology) basis, to personally instruct teaching, correspondence and radio and television (audiovisual) teaching for auxiliary, it is based on the learner, and main multiple medium of utilization and multiple interactive means carry out systematic teaching and write to each other between user and teacher, user and the educational institution.Modern distance education is for traditional long-distance education forms such as correspondence education, radio and television education.Web education is that modern information technologies are applied to educate the new ideas that the back produces, and the education of promptly using network technology and environment to carry out claims that also modern distance education is Web education.
The maturation of 3G technology and formal commercialization are the focuses that current I T industry and other parties concerned pay close attention to.Especially since 2009, just hoc anno, several big mobile operator began formally to march to 3G cell phone business.Mobile phone the Internet under the 3G technology support has possessed the equal result of use of traditional wired internet, even more preponderates in some aspects, high-speed wherein typical case's performance just of its transmission aspect.View Internet on mobile phone easily utilizes audio frequency, video resource to become a reality.
Carry out long-distance education by the mobile phone the Internet, especially external at home and abroad, take shape gradually.Just planning to carry out whole people's long-distance education by the mobile phone the Internet as India, similar work is also just being set about carrying out by some countries of Africa.In American-European developed country, the mobile phone the Internet newspaper business of Japan is extremely flourishing, and its mobile phone newspaper total number of users height ranks first in the world, and by mobile phone internet browsing webpage, consultings such as reading news are to the utmost for popularizing in Japan.We can say, carry out long-distance education by the mobile phone the Internet and be not only technically, is feasible in the practical application equally.
But the digitlization long-distance means based on " PC+Internet " pattern still have certain limitation, especially have certain restriction on practical face, and practical occasion also relatively limits, poor mobility.On the other hand, still higher based on the digitlization long-distance means cost of " PC+Internet " pattern, further limited the development of long-distance education and popularized.Smart-phone long-distance educational system based on 3G network is a kind of novel modern distance education form, is new technology and the important supplement in the long-distance education system.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of smart-phone long-distance educational system based on 3G network has been proposed, this invention has good, the general favour masses of mobility, characteristics such as practical and convenient, the mode of learning that breaks traditions, satisfying the user learns anywhere or anytime, system adopts the P2P transmission mode, guarantees stability of data transmission and reliability, improves transmission rate.
In order to realize goal of the invention, the technical scheme of employing is as follows:
A kind of smart-phone long-distance educational system based on 3G network adopts three layers framework, is divided into network interface layer, hard core control and key-course and application service layer.Comprise as lower module:
The application service module of interactive function between realization system and the user;
Realize the transmission of P2P stream media system and the control module of information data transmission and control;
Be responsible for the system management module of user management, teaching task, teaching process and network security management;
Handle the service driving module of the effective using system of multi-user concurrent;
And the responsible 3G network bottom data transport module that is connected with network bottom layer.
Described application service module comprises synchronous curriculum module, file storage module, document retrieval module, distribution sharing module and instant messaging module, be alternation of bed and the function realization layer between long-distance educational system and the user, the user realizes the instructional function that long-distance educational system provided by this functional module.
Transmission of described P2P stream media system and control module are connected with application service module, and node searching and the node linkage function of P2P is provided, and video/audio connects transmission and controlled function.Comprise cache module, data allocations module, data selection module, monitoring and automatic regulating module.
Described system management module is connected with application service module, realizes the user, teaching task, teaching process and network safety.
Described service driving module is connected with synchronous curriculum module, realizes user concurrent using system resources effective.
Whether described cache module should be data cached according to the playback rate decision node of requesting node, and as the needs buffer memory, judgement should which specific data segment of buffer memory.
Described data allocations module is distributed the order of data that each data transmitting node sends according to data bandwidth between data generation node, thereby obtains the minimal data receive delay.
Described data select module to come Dynamic Selection to go out " set of activity data sending node " according to factors such as network condition and message transmission rates, and the node request media data from this set obtains optimum message transmission rate.
The transfer of data and the loss of data situation of each data generation node of described monitoring and automatic regulating module dynamic monitoring are selected module, data allocations module and cache module for node necessary statistical information are provided.
Described 3G network bottom data transport module and the transmission of P2P stream media system and control module, service driving module are connected with system management module, realize the connection and the transmission of data.
The present invention has following beneficial effect:
The present invention is a kind of long-distance educational system based on smart mobile phone, has good, the general favour masses of mobility, characteristics such as practical and convenient, has broken traditional mode of learning, can satisfy the user and learn anywhere or anytime.
The present invention adopts P2P Streaming Media transmission mode, guarantees stability of data transmission and reliability, saves cost.Can improve system transmissions speed preferably, to the server performance high requirement, also can effectively utilize the remaining hardware resource of all terminal end nodes such as CPU, bandwidth etc. in the effective mitigation system running of energy, make things convenient for all users to use.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is P2P stream media system transmission of the present invention and control module schematic diagram.
The schematic diagram that Fig. 3 uses for the present invention.
Embodiment
The present invention is described further below in conjunction with accompanying drawing.
Structural representation of the present invention as shown in Figure 1, system adopts three layers framework, is divided into network interface layer, hard core control and key-course and application service layer.Comprise application service module, the transmission of P2P stream media system and control module, system management module, service driving module and 3G network bottom data transport module.
Described application service module comprises synchronous curriculum module, file storage module, document retrieval module, distribution sharing module and instant messaging module, be alternation of bed and the function realization layer between long-distance educational system and the user, the user realizes the instructional function that long-distance educational system provided by this functional module.The classroom module is one of most important module in the system synchronously, and all in classroom module realization synchronously, simultaneously, the synchronous or real-time recorded broadcast process of video linkage function in the teaching process and video also realizes in this module main teaching process; File storage module is used for storing the information state in the user learning process; Needed teaching text message of document retrieval module user search user and audio, video data; File sharing module is deposited the data that the user shares; The instant messaging module is the main tool of carrying out information interchange between the user.Each above-mentioned module is all carried out the exchange of data with the backstage service end.
Transmission of described P2P stream media system and control module are connected with synchronous classroom module in the application service module, node searching and the node linkage function of P2P are provided, video/audio connects transmission and controlled function, comprises cache module, data allocations module, data selection module, monitoring and automatic regulating module.By this module, allow all user sides that need connect find out and to be connected to teacher's end node or other provides the host node of download of information, download needed signal data.During this, the system management module whole process of system is monitored, the connection situation of all nodes and the progress of teaching process in the understanding system.
Described system management module is connected with each functional module in the application service module, is the concentrated reflection of system management function, comprises user management, teaching task management, teaching process management and network security management.Be responsible for operational administrative to user basic information, the teaching task course management, the setting and the safety management of the feedback of teaching process user learning information and appraisal management and grid access rights be set.
Described service driving module is connected with synchronous curriculum module in the application service module, service request to synchronous curriculum module is handled, be provided with the responsible monitoring of special-purpose monitor process in the system to communication, in case find to have new service request to arrive, be about to service request and hand to the service driving resume module.
Described 3G network bottom data transport module is responsible for network bottom layer and is connected, be connected with hard core control and key-course, realize the connection and the transmission of data, this module is by receiving data from server end, by hard core control and key-course, be transferred at last on user's the mobile phone terminal.
P2P stream media system transmission of the present invention and control module schematic diagram such as Fig. 2:
Certain lesson file is watched in user's request, at first system sends query requests to bottom P2P network, find a node set that has this media resource by recalls information inquiry routing algorithm, and go out by delay and the bandwidth of user node to the middle communication link of these nodes by the network detection check-up.Then, data select module to go out " set of activity data sending node " according to these Information Selection.This set is the best set that node constituted of network condition, other node is formed the secondary node set, in the active node set, there is node to withdraw from or the decline of Network Transmission quality, then from this set, selects the node that quality descends in the node replacement activity node set.
System call data allocations module decides to each node distribution suitable data transmission rate and data block sequence number in the activity data transmission set according to network condition.Data reception node is set up the linking request data with data transmitting node respectively according to these parameters then.If the activity data sending node withdraws from session or link transmission quality descends, monitoring and automatic regulating module notification data distribution module are redistributed data, and then notification data selects module that new appropriate nodes is provided.Simultaneously, the data new node of selecting module also can periodically from bottom-layer network, provide gather select new node replace existing active node gather in the relatively poor node of data transmission rate.
The schematic diagram of the example that the present invention uses as shown in Figure 3, different terminal phone user user1, user2, user3, user4, userN are arranged by carrying out between 3G network and server alternately, client is an application program based on Web browser, at first the user by authentication after, land the distance learning interface, propose the medium request by program request again, receive video flowing or audio stream from streaming media server, to audio/video have falling back, advance, controlled function such as replay temporarily.Also can course be watched synchronously simultaneously by entering the course live broadcast page.In the process of study, can retrieve required information, share between information, the user work such as interchange mutually.
The user is in the process of carrying out synchronous course learning, by transmission of P2P stream media system and control module, node searching and the node linkage function of P2P are provided, and video/audio connects transmission and controlled function, can guarantee high efficiency transfer of data under the limited prerequisite of the network bandwidth.Because mobile phone, guarantees that the user can carry out distance learning in different places and different time as the terminal of study.
Claims (10)
1. smart-phone long-distance educational system based on 3G network is characterized in that being provided with as lower module:
The application service module of interactive function between realization system and the user;
Realize the transmission of P2P stream media system and the control module of information data transmission and control;
Be responsible for the system management module of user management, teaching task, teaching process and network security management;
Handle the service driving module of the effective using system of multi-user concurrent;
And the responsible 3G network bottom data transport module that is connected with network bottom layer.
2. a kind of smart-phone long-distance educational system based on 3G network according to claim 1 is characterized in that described application service module also comprises synchronous curriculum module, file storage module, document retrieval module, distribution sharing module and instant messaging module.
3. a kind of smart-phone long-distance educational system according to claim 1 based on 3G network, it is characterized in that transmission of described P2P stream media system and control module are connected with application service module, provide the node searching of P2P to be connected transmission and control with node and video/audio, comprise cache module, data allocations module, data selection module, monitoring and automatic regulating module.
4. a kind of smart-phone long-distance educational system based on 3G network according to claim 1 is characterized in that described system management module is connected with application service module, realizes to the user teaching task, teaching process and safety management of network.
5. a kind of smart-phone long-distance educational system based on 3G network according to claim 1 is characterized in that described service driving module is connected with synchronous curriculum module, realizes user concurrent using system resources effective.
6. a kind of smart-phone long-distance educational system according to claim 3 based on 3G network, it is characterized in that whether described cache module should be data cached according to the playback rate decision node of requesting node, as the needs buffer memory, judgement should which specific data segment of buffer memory.
7. a kind of smart-phone long-distance educational system according to claim 3 based on 3G network, it is characterized in that described data allocations module is between data generation node, distribute the order of data that each data transmitting node sends according to data bandwidth, thereby obtain the minimal data receive delay.
8. a kind of smart-phone long-distance educational system according to claim 3 based on 3G network, it is characterized in that described data select module to come Dynamic Selection to go out " set of activity data sending node " according to network condition and message transmission rate factor, the node request media data from this set obtains the message transmission rate of optimum.
9. a kind of smart-phone long-distance educational system according to claim 3 based on 3G network, the transfer of data and the loss of data situation that it is characterized in that each data generation node of described monitoring and automatic regulating module dynamic monitoring are selected module, data allocations module and cache module for node necessary statistical information are provided.
10. a kind of smart-phone long-distance educational system according to claim 1 based on 3G network, it is characterized in that described 3G network bottom data transport module and the transmission of P2P stream media system and control module, service driving module are connected with system management module, realize the connection and the transmission of data.
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| CN201010139379A CN101820424A (en) | 2010-03-30 | 2010-03-30 | 3G network-based smart-phone long-distance educational system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102325150A (en) * | 2011-07-06 | 2012-01-18 | 同济大学 | Method and device for realizing multi-screen interactive mobile learning |
| CN102685157A (en) * | 2011-03-09 | 2012-09-19 | 厦门网尚信息技术有限公司 | Campus interactive communication platform based on P2P (peer-to-peer) and realization method thereof |
| CN104916171A (en) * | 2015-07-11 | 2015-09-16 | 安庆状元郎电子科技有限公司 | Public courseware management system |
| CN104933903A (en) * | 2015-07-11 | 2015-09-23 | 安庆状元郎电子科技有限公司 | Teaching management system capable of sharing resources |
| CN109286909A (en) * | 2018-11-22 | 2019-01-29 | 河南工学院 | A kind of mobile remote educational method and device |
-
2010
- 2010-03-30 CN CN201010139379A patent/CN101820424A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102685157A (en) * | 2011-03-09 | 2012-09-19 | 厦门网尚信息技术有限公司 | Campus interactive communication platform based on P2P (peer-to-peer) and realization method thereof |
| CN102325150A (en) * | 2011-07-06 | 2012-01-18 | 同济大学 | Method and device for realizing multi-screen interactive mobile learning |
| CN104916171A (en) * | 2015-07-11 | 2015-09-16 | 安庆状元郎电子科技有限公司 | Public courseware management system |
| CN104933903A (en) * | 2015-07-11 | 2015-09-23 | 安庆状元郎电子科技有限公司 | Teaching management system capable of sharing resources |
| CN109286909A (en) * | 2018-11-22 | 2019-01-29 | 河南工学院 | A kind of mobile remote educational method and device |
| CN109286909B (en) * | 2018-11-22 | 2021-03-12 | 河南工学院 | Mobile remote education method and device |
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