CN101064715A - Realization of embedded system based P2P technique - Google Patents
Realization of embedded system based P2P technique Download PDFInfo
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- CN101064715A CN101064715A CN 200610075911 CN200610075911A CN101064715A CN 101064715 A CN101064715 A CN 101064715A CN 200610075911 CN200610075911 CN 200610075911 CN 200610075911 A CN200610075911 A CN 200610075911A CN 101064715 A CN101064715 A CN 101064715A
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Abstract
The invention relates to method of realizing P2P applications in multitask real time embedded system. The embedded system equipment possesses advantages of low spending, little volume, low cost, high reliability, process in time, it is used widely in multiple fields, because the process capability and storing capability are low, expansion of function is limited; the P2P technique combines the user terminals to a network, and shares the bandwidth, processes information; the invention syncretizes the embedded system, P2P technique, and distributed management, and realizes functions of sharing file download, searching and retrieving, content dispensing, network storing, cooperating work, internet call, instant communication, mobile communication, distributed calculation.
Description
Technical field
The present invention relates to the communications field, multimedia field, especially the technology implementation method of P2P in embedded system device
Background technology
Fast development along with electronic technology, the particularly generation of large scale integrated circuit and the microcomputer that occurs, make modern scientific research obtain qualitative leap, the appearance of embedded microcontroller technology then is to have brought once new technological revolution to modern industry control field.The system that forms by embedded microcontroller, remarkable advantages can be embedded into any miniature or miniature instrument exactly, in the equipment, along with the requirement of market to superminiature Embedded Application technology and product constantly increases, and the progress of semiconductor technology and design method, embedded system is under present development situation, the more and more higher and Internet connection of reliability and application level has been a kind of tangible trend, embedded device possesses network function, and be connected with the Internet or corporate intranet, strengthened the many-sided practicality of embedded system, the flush bonding processor disposal ability that embedded system device uses is still very limited, data space is less relatively, storage capacity a little less than, such as more popular embedded hardware platform:
Processor: flush bonding processor (ARM, MIPS etc.)
Internal memory: SDRAM chip
Memory device: Flash chip
Input equipment: button, touch screen
Input equipment: LCD
Sound device: audio chip
The network equipment: network card chip (10M～100M)
Other equipment: USB chip etc.
The embedded system product that possesses network function mainly contains following aspect:
1) intelligent PDA
Built-in multimedia resource can not satisfy the demands far away, the resource that needs more renewals, also just must be from multimedia messagess such as the various films of liking of network download, picture, sound, crucial problem is exactly to search the thing of wanting, and quick-downloading, the function of search of present wireless network a little less than, download can only be to download from server, when the user was many, speed of download was slower, causes failed download.
2) industrial instrument
After the industrial instrument that possesses network function is connected to the Internet or corporate intranet, need in real time and server carries out communication, adopt traditional C/S model, need collaborative work between instrument and the instrument in the part industry, in this case, just must rely on server scheduling, can not guarantee timely degree, cause collaborative work to have some setbacks.
3) family's set-top box
The Streaming Media transmission of the at present main C/S of dependence mode realizes Vod and live, and the server-side system framework is huge, and streaming media server support concurrent limited, will can't bear the heavy load along with the user increases server, cause playing interrupted, even connect and interrupt.
4) other smart machines
Because the flush bonding processor computing capability is relatively low, when carrying out complicated calculating, will expend a large amount of stand-by period.
Conclude the above, several aspects that traditional embedded system product needed is improved:
1) be connected to the Internet after, but all kinds of shared information of intelligent search and can obtain loading source from multiple spot, concurrent download is increased network utilization, thereby quickens to download
2) reciprocity connection mode is adopted in the cooperation of the communication between the equipment, has the management of effectively reporting for work, and asynchronous, parallel, reliable and real time communication can be provided
3) the equipment self computing capability is limited, needs to rely on Internet resources to carry out extensive high-performance cooperation and calculates
Summary of the invention
Purpose of the present invention is exactly in the existing embedded product, the network shared resource utilance is low, and a kind of P2P solution of in embedded system, efficiently utilizing Internet resources that proposes, the internet resource that the present invention mentions is a resource available on the Peer equipment: the CPU disposal ability, bandwidth, disk space or the like.
P2P is Peer to Peer, be called equity and connect or peer-to-peer network, directly mutual by the Internet or corporate intranet between the Peer, P2P makes that the communication on the network becomes easily, more direct share and mutual, eliminate the agent veritably, the P2P technology has following characteristic:
A, Peer know the existence of other Peer
B, Peer move in a virtual network
C, Peer have the characteristics of Client and Server simultaneously
D, a plurality of Peer can consist of a Peer group
The P2P network is by building intelligent node overlay network, adopt the distribution management pattern, at the network key position intelligent node is set, is used for monitoring resource distribution and bandwidth availability ratio, transmission delay, route trend, flow rate mode and distribution, interruption and fault and virus infections popularity etc. on the ambient network.These information of exchange between the intelligence node further realize monitoring and control summary responses.The intelligence node provides the layering retrieval capability, uses based on the P2P of embedded system and mainly contains three major types: the P2P content is shared, P2P communication cooperation, P2P is collaborative calculates.
(1) the P2P content is shared
The P2P content is shared and is comprised shared file download, search and retrieval, content distribution, the network storage and peer broadcast etc.The P2P content is shared and is set up safe and reliable network by scheduling of resource.When a large number of users is visited a network simultaneously, can cause congested, adopt the P2P method, by the request of intelligent node supervision, in case extraordinary quick growth occurs to website visiting, automatically the page is distributed to additional node, adopts the directed again content delivery network (CDN) that forms of request.Adopt dynamically and mouthful to select and two-way download, can file of multidiameter delay download and upload and/or multidiameter delay download the part of a file, quickening file distributing speed.
(2) P2P communication cooperation
P2P communication cooperation comprises collaborative work, Internet Protocol telephone, instant messaging and mobile communication.Adopt the distributed index technology, set up the super-peer overlapping network, constitute the distributed terminal database,, help reducing search time by node butt joint swap date.Because this P2P network uses the disposal ability of the computer of terminal own, the disposal ability of whole network increases and increases along with terminal number.P2P instantaneous communication system (IM) adopts reciprocity connection mode, and message format uses XML (extensible Markup Language) (XML), has the management of effectively reporting for work, and can provide asynchronous, parallel, reliably communicate by letter with near real time.Support to move report for work management and mobile immediate communication.System uses ietf standard assurance intercommunication to use mutually.
3) P2P is collaborative calculates
The collaborative calculating of P2P comprises cooperation calculating, grid (Grid) and data content grid.Network is distributed P2P mode, adopts and mixes equality butt joint P2P architecture, based on the safety and the digital signature of PKIX, the Web service of Simple Object Access Protocol (SOAP) message is arranged.
In addition, present IPv4 the Internet adopts proprietary address and network address transmission device (NAT) in a large number because the IP address is not enough, and P2P does not need NAT just can realize function and logic control at the IPv6 in future online operation, can simplify network design.For the network architecture, no longer need to consider the compatibility between NAT and the software thereof, also do not need server, reduce operating cost at far-end.
Description of drawings
Fig. 1 is the method schematic diagram that embedded system is obtained resource in the prior art
Fig. 2 is that embedded system utilizes P2P to obtain the method schematic diagram of resource among the present invention
In the accompanying drawing 1,2: work station
3: intelligent PDA
4,5: embedded device
6: data server
Embodiment
As shown in Figure 1, traditional embedded system is obtained external resource and is undertaken by the Client/Server pattern, and the Internet resources path is single, and function a little less than, to be example, the specific embodiment of the present invention is described below in conjunction with Figure of description 2 based on embedded Linux system.
Step 1, build embedded system
A, reduction linux kernel: adjust Linux guiding kernel and initialize process, select and revise hardware device drivers as required, load essential system application, simplify the TCP/IP network protocol stack, recompilate linux kernel
B, reduction file system: reduce the unwanted file of goal systems as required, and revise the kernel respective profiles
C, design BootLoader: be responsible for detection hardware, and carry out the initiating hardware peripheral hardware, start linux kernel
D, design Linux built-in application program: write the P2P application program
E, storage medium is carried out subregion, programming linux kernel, file system and application program
A, start and to build the embedded system that finishes, enter system after, the configuration network relevant parameter enters the Internet or intranet
B, configuration P2P Internet resources, configuration information publisher node, P2P member organize information, safety verification information
C, configuration local shared resources (LSR), share service, and resource encrypted, the index announcement generated
Step 3, shared resource issue
A, startup P2P use, and according to configuration parameter, are connected to relevant P2P network, by safety verification, to the announcement of relevant super Peer node issue self the Peer network information, and set up the virtual network passage.
B, issue shared resource are to the P2P network, and Peer node retrieval local shared resources (LSR) generates the announcement of HASH index, and add the network location information of self Peer, notify to the P2P network of relevant super Peer node and correspondence.
A, intelligent search shared resource
The Peer node receives the advertised information of P2P network in real time, and according to the agreement mode decode, obtain network shared resource information, and carry out intelligent search network resource as required, and obtaining Internet resources from the super Peer node of P2P network, super Peer node is by active probe and monitor link between the node, set up optimal path, reduce packet loss, reduce time delay, improve throughput.
B, intelligent multi-source are downloaded shared resource
After searching related resource, extract the network path after optimizing, carry out the multi-source file transfer, adopt the multidiameter delay download and upload between the Peer, super Peer node real-time optimization file fragment route improves network transfer speeds.After resource downloading finishes, carry out resource checksum, decode according to agreed manner.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (5)
1, in the method for Implementation of Embedded System P2P, it is characterized in that, may further comprise the steps:
A, in the equipment of embedded system, load the P2P application program
B, by the P2P network, the issue shared resource
C, by the P2P network, the search shared resource
D, utilize shared resource to carry out data communication.
2, the P2P that loads in embedded system according to claim 1 uses, and it is characterized in that: comprise the P2P application program in the file system of embedded system, this P2P program also can connect the Internet or local area network (LAN), and enter outside P2P network.
3, embedded system according to claim 2 is by P2P network issue shared resource, it is characterized in that: embedded system enters the P2P network by network, by safety verification,, and set up the virtual network passage to the announcement of relevant super Peer node issue self the Peer network information.
4, embedded system according to claim 3 is by P2P web search shared resource, it is characterized in that: the Peer node receives the advertised information of P2P network in real time, and according to the agreement mode decode, obtain network shared resource information, and carry out intelligent search network resource as required, obtain Internet resources from the super Peer node of P2P network, super Peer node is set up optimal path by the link between active probe and the supervision node.
5, embedded system according to claim 4 is carried out data communication by P2P network utilisation shared resource, it is characterized in that:
A, Peer node utilize super node to optimize path intelligence multi-source downloaded resources
Collaborative calculating between B, the Peer node, the disposal ability of shared processing device
The communication cooperation is used point-to-point passage and is communicated between C, the Peer node.
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| CN 200610075911 CN101064715A (en) | 2006-04-24 | 2006-04-24 | Realization of embedded system based P2P technique |
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| CN 200610075911 CN101064715A (en) | 2006-04-24 | 2006-04-24 | Realization of embedded system based P2P technique |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009089788A1 (en) * | 2008-01-08 | 2009-07-23 | Huawei Technologies Co., Ltd. | Method, device and system for realizing resource sharing |
| CN102801800A (en) * | 2012-08-03 | 2012-11-28 | 中国联合网络通信集团有限公司 | Method and system for performing resource sharing processing among plurality of wireless terminals |
| CN103078922A (en) * | 2012-12-28 | 2013-05-01 | 国家计算机网络与信息安全管理中心 | Resource releasing system based on virtual computing environment |
| CN103269302A (en) * | 2012-12-07 | 2013-08-28 | 北京奇虎科技有限公司 | Shared file management method and system for instant messaging |
| CN103281234A (en) * | 2012-12-07 | 2013-09-04 | 北京奇虎科技有限公司 | File processing method and system in instant messaging |
| CN103826222A (en) * | 2012-11-16 | 2014-05-28 | 中国电信股份有限公司 | Method and system for cooperatively executing task, and user equipment |
| CN104506505A (en) * | 2014-12-17 | 2015-04-08 | 王迪兴 | Two-way information interactive Internet architecture system and implementation method thereof |
| CN107483614A (en) * | 2017-08-31 | 2017-12-15 | 京东方科技集团股份有限公司 | Content scheduling method and communication network based on CDN Yu P2P networks |
-
2006
- 2006-04-24 CN CN 200610075911 patent/CN101064715A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009089788A1 (en) * | 2008-01-08 | 2009-07-23 | Huawei Technologies Co., Ltd. | Method, device and system for realizing resource sharing |
| CN102801800A (en) * | 2012-08-03 | 2012-11-28 | 中国联合网络通信集团有限公司 | Method and system for performing resource sharing processing among plurality of wireless terminals |
| CN102801800B (en) * | 2012-08-03 | 2015-06-10 | 中国联合网络通信集团有限公司 | Method and system for performing resource sharing processing among plurality of wireless terminals |
| CN103826222A (en) * | 2012-11-16 | 2014-05-28 | 中国电信股份有限公司 | Method and system for cooperatively executing task, and user equipment |
| CN103269302A (en) * | 2012-12-07 | 2013-08-28 | 北京奇虎科技有限公司 | Shared file management method and system for instant messaging |
| CN103281234A (en) * | 2012-12-07 | 2013-09-04 | 北京奇虎科技有限公司 | File processing method and system in instant messaging |
| CN103078922A (en) * | 2012-12-28 | 2013-05-01 | 国家计算机网络与信息安全管理中心 | Resource releasing system based on virtual computing environment |
| CN104506505A (en) * | 2014-12-17 | 2015-04-08 | 王迪兴 | Two-way information interactive Internet architecture system and implementation method thereof |
| CN107483614A (en) * | 2017-08-31 | 2017-12-15 | 京东方科技集团股份有限公司 | Content scheduling method and communication network based on CDN Yu P2P networks |
| CN107483614B (en) * | 2017-08-31 | 2021-01-22 | 京东方科技集团股份有限公司 | Content scheduling method and communication network based on CDN (content delivery network) and P2P network |
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