CN101765071A - Method and device for pushing adaptive data to wireless data communication terminal - Google Patents
Method and device for pushing adaptive data to wireless data communication terminal Download PDFInfo
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Abstract
The invention discloses a wireless data communication terminal and an adaptive data push platform and method oriented to the wireless data communication terminal. The wireless data communication terminal comprises a short message processing module which is responsible for monitoring and processing the short message of a specific port, for picking up and resolving the content of the short message applied by the push service, and for triggering a data download module to be connected with a data push server; and the data download module downloads the push data of the data push server. The data push server of the adaptive data push platform receives a data push order, acquires the data to be pushed and sends the short message of the specific port to the wireless data communication terminal to trigger the wireless data communication terminal to be connected with the data push server. After receiving the short message, the wireless data communication terminal is connected with the data push server and accurately downloads the push data of the data push server. By adopting the combination of push at server side and pull at client side in the data transmission process, the invention develops the strong points and avoids the weak points, and realizes active efficient data transmission.
Description
[technical field]
The present invention relates to the communications field, particularly wireless data transmission scheme wherein.
[background technology]
At present, the business of carrying out based on the RFDC terminal all is to adopt (Pull) technology that pulls, be applied in the mobile phone, promptly start application program by button by the cellphone subscriber, and, return particular data by the Internet server again and give the RFDC terminal to Internet server initiation request of data.The application layer host-host protocol of the Internet main flow as HTTP, FTP, POP3, SMTP etc., all is the Pull pattern of being initiated by client.Simple example is exactly the behavior that mails of the Mail Clients such as Outlook of extensive use, is typical client pull mode (Client Pull Mail), and promptly client initiatively mails.
Corresponding with it, be exactly to push (Push) technology, promptly need not the cellphone subscriber and participate in, must be that the Internet server can initiatively push various types of data to the user through after authorizing.The difference of Push and Pull just is that Push is initiated by server end, and the initiation process need not the user and participates in; And Pull must to be the user conscious that request is initiated in active.
The typical case of Push is the automatic renewal of Windows operating system, when new security patch is arranged, can obtain prompting on user's the computer, requires user installation.This need not the user and initiatively initiates to ask.
In mobile Internet business, need the transfer of data of server end initiation Push more common.In the mobile value-added service field, the Push behavior for promoting service and user experience, undoubtedly has overwhelming dominance with respect to the Pull behavior.Such as, for the audiophile, can be in his RFDC terminal through authorizing back Internet server to various recent pop music that he Push liked.And for the recreation fan, then can the various new games of Push in its RFDC terminal.
The Direct Push of Microsoft technology leans against and keeps a normal HTTPS between mobile device and the Exchange Server and connect and play a role.Because this connection always is in upstate, so there is the message of new e-mail just almost can be transmitted to mobile device immediately.
It is no problem keeping normal HTTPS to be connected the PC field, but on the RFDC terminal, some conspicuous shortcomings is arranged.For the promoter, some mobile device can not receive audio call when data sent reception.Another general shortcoming is to transmit and receive data to have consumed the electric power same with audio call.And to keep this HTTP often to connect, and then need frequent transmission heartbeat data, increase the GPRS flow like this, consumed unnecessary RFDC terminal electric power simultaneously.
Towards the data transmission technology of RFDC terminal, adopt the mode of clients poll to realize mostly at present.This way has increased the computation burden of RFDC terminal, and is big to the consumption of RFDC end cell, poor practicability.Existing data transmission technology does not go to optimize at the mobile data communication network.
Adopting transfer of data also seldom to use data compression at present in the RFDC terminal software, also is single compression algorithm and fixing compression ratio even if use.For some compressed file format, such as video file, the bandwidth conservation of compression acquisition is very little once more, and the decompression of RFDC terminal end need expend CPU and battery electric quantity.
The transmission technology of RFDC terminal employing is not at present considered RFDC terminal situation and the influence of network condition to transmitting; Only remain seldom electric weight such as battery, program is but proceeded video file and is downloaded, and causes electric weight to exhaust, and user's number is not all engaged.
Use the RFDC end application of network communication generally to write the code of transfer of data voluntarily at present, this causes the very big duplication of labour, and quality also is difficult to guarantee.
[summary of the invention]
Main purpose of the present invention is: between server end and RFDC terminal, provide stable, the rapid and reliable data of a kind of realization to push scheme.
For achieving the above object, the present invention proposes the RFDC terminal that a kind of self-adapting data is downloaded, and comprises data download module and data processing module; Also comprise the note processing module; The note that described note processing module is responsible for particular port is monitored and is handled, and extracts and parses the short message content that pushes service application, triggers described data download module and communicates with the data push service device and be connected; Data download module is downloaded the propelling data of this data push service device; Described data processing module is responsible for data downloaded is handled.
Above-mentioned RFDC terminal, also comprise the formation module, after described note processing module is extracted and parsed the short message content that pushes service application,, submit to described formation module with pushing after the short message content of using is converted to the interface format of described formation module; Described formation module is responsible for pushing the queue management of note, and after data transfer task is finished the call notification module, notify corresponding application program.
Above-mentioned RFDC terminal, described data download module comprise burst breakpoint transmission module, and its size to downloading data fragmentation is carried out the self adaptation adjustment, and the corresponding data push service device of notice carries out the burst transmission in view of the above.
Above-mentioned RFDC terminal, described data download module also comprise group sheet module, are used for and will recombinate through described burst breakpoint transmission module data downloaded.Described data processing module comprises decompression module, is used for the partial data through described group of sheet module reorganization is decompressed.
Simultaneously, the present invention proposes a kind of self-adapting data method for pushing, comprise the steps: towards the RFDC terminal
61) the data push service device sends the note of particular port to the RFDC terminal;
64) after the RFDC terminal is received this note, communicate with the data push service device and to be connected;
65) the RFDC terminal is downloaded the propelling data in the data push server.
Above-mentioned self-adapting data method for pushing, described step 63) in, the data push service device determines whether described data are compressed according to the attribute of data type and RFDC terminal; According to one or more information in cache size, network signal intensity, RFDC end cell state and the type of network link of RFDC terminal the size of burst is carried out adaptive judgement.
Above-mentioned self-adapting data method for pushing is in described step 63) after, also comprise described step 64) process that decompresses of data that download is finished.
Above-mentioned self-adapting data method for pushing, described step 62) in, after the RFDC terminal is received note, handles accordingly and join in the task queue, the queue processing module of self manages and safeguards formation, and calls the burst breakpoint transmission module of self; Burst breakpoint transmission module is connected with the data push service device by the expanded HTTP agreement.
Above-mentioned self-adapting data method for pushing, described step 61) preceding, comprise that also the data push service device is by applying the step of obtaining propelling data in the professional server.Described data push service device comprises by applying the step of obtaining propelling data in the professional server:
131) server submits to data to push the order server that order is given the data push service device;
132) the order server joins in the indent queue after order is verified, handled;
133) the order monitoring module of data push service device is monitored and is managed indent queue;
134) the order processing module of data push service device is got propelling data according to order contents from server;
135) data module of data push service device is deposited after the propelling data packing is handled.
Above-mentioned self-adapting data method for pushing in the described step 1), triggers short message gateway server by the order processing module in the order server of data push service device, triggers short message gateway server and sends the note of particular port to the RFDC terminal.
Above-mentioned self-adapting data method for pushing, described step 63) in, described burst breakpoint transmission module is carried out the self adaptation adjustment according to the one or more parameters in the cache size of RFDC terminal, network signal intensity, battery of mobile phone state, the type of network link information to the size of burst.
Simultaneously, the present invention proposes a kind of self-adapting data and push platform towards the RFDC terminal, comprise the data push service device, this data push service device is used to accept data and pushes order, obtain the data of required propelling movement, the note that sends particular port is to the RFDC terminal, communicates with it and is connected to trigger the RFDC terminal; After the RFDC terminal is received note, communicate with this data push service device and to be connected; The RFDC terminal is downloaded the data that the data push server need transmit.
The above-mentioned self-adapting data towards the RFDC terminal pushes platform, and described data push service device comprises order server, short message gateway server and data send server; Described order server to the Service Order that needs push monitor, management and packing data; Described data send server response HTTP request realizes being connected with the RFDC terminal and the data of Service Order is pushed to the RFDC terminal; Described short message gateway server receives and monitors the message that described order server sends, and realizes sending the note of particular port to the RFDC terminal.
The above-mentioned self-adapting data towards the RFDC terminal pushes platform, and described data send server comprises burst module and compression module; Described compression module compresses the packet that is sent by described order server, and described burst module is carried out burst to the packet that is sent by described order server.
Adopt the combination that service end pushes and client pulls in the transfer of data of the present invention, maximize favourable factors and minimize unfavourable ones, overcome the deficiency of the two existence, kept the advantage of the two, realize active, transfer of data efficiently.
RFDC terminal provided by the invention is by communicating to connect that the short message trigger data is downloaded; Under normal circumstances, program does not need to reside in the internal memory of RFDC terminal, and without any calculating and communication, bandwidth consumed and battery have not been saved bandwidth resources, have reduced the requirement to bandwidth yet; Improve the speed of RFDC terminal downloads data, greatly improved the practicality of technology.The burst breakpoint transmission module of RFDC terminal, whether take all factors into consideration RFDC terminal dump energy, residue memory space, RFDC terminal in transmission logic is in talking state, whether is in various factors such as roaming state, can reduce the influence of transfer of data to basic speech business as far as possible, reduce user's communication fee as far as possible, greatly promoted user's experience.
The self-adapting data transmission platform towards the RFDC terminal that the present invention makes up is applicable to the RFDC terminal operating system of various isomeries.From the terminal angle, the present invention is by based on the flexible self adaptation burst module of mobile network environment, select module and to the expansion of http protocol based on the self-adapting compressing of file type and RFDC terminal attribute, solved RFDC terminal dependence problem to external factor such as operational capability, signal power, charge level and amount of bandwidth in data transmission procedure, realize breakpoint transmission and adaptation mechanism flexibly, thereby guaranteed the RFDC terminal data transmission of efficient stable.
Data transmission technology provided by the invention is at the available bandwidth changing condition of mobile data communication networks such as GPRE/EDGE/TD-SCDMA, adopts self adaptation burst transmission technology, reached the making full use of of bandwidth, and improved transmission speed greatly.
Method of the present invention and platform, adopt adaptive compression, can be by technical capability and the network condition proposition compression request of RFDC terminal according to self, server end determines whether to compress and adopt which kind of compression algorithm and compression ratio according to the request of file type and RFDC terminal.Adaptive compression greatly reduces the consumption to bandwidth, RFDC terminal CPU and RFDC terminal battery electricity quantity.
Among the present invention, whether take all factors into consideration RFDC terminal dump energy, residue memory space, RFDC terminal in the transmission logic is in talking state, whether is in factor such as roaming state, in conjunction with the optional setting of a plurality of users, accomplish to reduce the influence of transfer of data to basic speech business as far as possible, reduce user's communication fee as far as possible, greatly promoted user's experience.
Transport frame provided by the invention provides unified API to upper level applications, and application program needn't be concerned about the details of transfer of data, has improved the efficient of application and development.From application point, the present invention provides the development interface that makes things convenient for the programmer to carry out data manipulation on the basis of transfer of data, for the application and development of this platform integration of wireless data communication terminal provides assurance; By based on the application framework of the business of pushing and in conjunction with the user data statistical analysis module, the statistical analysis ability that has possessed application data, can help solve problems such as terminal applies demands of developing location and version improvement, strengthen the operation and the ability of maintenance of RFDC end application.
[description of drawings]
The system construction drawing of Fig. 1 embodiment of the invention,
MExpress Server: data push service device; MExpress Client: RFDC terminal; Order Server: order server; Order Handler: order processing module; Order Monitor: order monitoring module; Dispatch Server: data send server; MSG Core: short message gateway server; Compressor: compression module; Cryptor: encrypting module; Slice Retriever: burst breakpoint transmission module; MSG Listener: note processing module; Queue Handler: formation module; Slice Handler.: burst module; Data Handler.: data module; Notifier: notification handler module; App Data: application layer data; Application: application program.
[embodiment]
Also the present invention is described in further detail in conjunction with the accompanying drawings below by specific embodiment.
Embodiment one:
Data push service device mExpress Server: comprise order server Order Sever, data send server Dispatch Sever, short message gateway server Msg Core and burst memory module etc.
Order server Order Server finishes monitoring, the management of Service Order, the function of packing data, and provides corresponding interface to the service of using.The order server comprises order processing module, indent queue module, order monitoring module, order processing device and data processing module; The order server provides the outside unified interface that pushes order, and order carries out unified management.After the propelling movement order is submitted to the order server from the outside, after the legitimacy of order server inspection order it is joined in the indent queue.The indent queue module to order add, management such as deletion.When indent queue when not being empty, from formation, take out an order and according to sequence information by data processing module to the data processing of packing, and the storage after will packing is in the burst memory.
The data send server comprises compression module, burst module and encrypting module; The data send server has not only been realized the basic function of WEB server, can respond the HTTP request, and can resolve the expanded HTTP head, extract the attribute information of RFDC terminal, and can come adaptive judgement whether propelling data to be compressed according to the attribute of data type and RFDC terminal.The data send server has carried out the function expansion on the basis of WEB server, when carrying out data interaction with mobile phone terminal, can compress processing to data according to mobile phone attribute information and data type information are adaptive.
The short message gateway server module is responsible for receiving and monitoring the message that the order server sends over, and the message queue of managing internal is realized the multi-thread concurrent visit, and net element communications such as responsible and Short Message Service Gateway, realizes note PUSH function.
The RFDC terminal comprises note processing module, formation module, data download module and data processing module, notification module etc.: wherein data download module comprises burst breakpoint transmission module and group sheet module.Data processing module comprises decompression module and data memory module.
Note processing module Msg Listener is responsible for the note of particular port and monitors and processing, can extract and parse the short message content that pushes service application, and will push after the short message content of using is converted to the interface format of formation module Queue Handler, submit to the formation module.
Formation module Queue Handler module is responsible for pushing the queue management of note, and after data transfer task is finished the call notification module, notify corresponding application program.
Data download module is responsible for http communication, the flexible burst download of adaptive data, the continuous automatically biography of breakpoint, burst deciphering and sheet assembling and is managed.Http communication is finished and is set up the function that wireless network connects, assembles HTTP request message, transmission HTTP request message, resolves the http response message.Burst breakpoint transmission module can be carried out adaptive judgement to the size of burst according to information such as the cache size of RFDC terminal, network signal intensity, RFDC end cell state, type of network link, to improve efficiency of transmission, realize quick, stable data download, this function is extremely important to the transmission of the Large Volume Data under the mobile network environment.Continuous automatically the passing on Gong of breakpoint can be finished the breakpoint transmission of data automatically under the situation that Network Transmission is interrupted or the RFDC terminal closedown is restarted, and need not to download again, improved efficiency of transmission greatly.Divide chip size can in download request, pass through the Range header field notification data send server of HTTP by mobile phone terminal.
Data processing module is responsible for the function of the decompression and the storage administration of data.
Principle and flow process:
1. applying professional server submits to data to push the order server Order Server that order is given data push service device mExpress Server.
2. order server Order Server joins in the indent queue after order such as is verified at processing.
3. order monitoring module Order Monitor monitors and manages indent queue.
4. the order processing device fetches data from server database according to the content of order.
5. the data processing module Data Handler among the data push service device mExpress Server leaves among the burst memory module SliceStore after server data Service Data packing is handled.
6. the order processing device triggers short message gateway server.
7. short message gateway server sends the note of particular port to the RFDC terminal.
8. after the note processing module of RFDC terminal is received note, handle accordingly and join in the task queue.
9. the queue processing module manages and safeguards formation, and calls burst breakpoint transmission module module data download.
10. burst breakpoint transmission module communicates with the data send server by the expanded HTTP agreement and is connected, and data is carried out the burst breakpoint transmission download.
11. the fragment data after downloading is decrypted.
12. whether data push service device end compresses according to the judgement data of the attribute self-adaptive of data type and RFDC terminal.
13. when data slice all download finish after, to whole data decompress (if the compressed words of data).
14. the complete data download after memory module is deciphered decompress(ion) is stored as application layer data AppData.
15. DTD, notification module notice corresponding application program.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.For example, the size of burst also can produce according to former data transmission baudss and current network environment weighted calculation.
Claims (16)
1. the RFDC terminal of self-adapting data download comprises data download module and data processing module; It is characterized in that: also comprise the note processing module; The note that described note processing module is responsible for particular port is monitored and is handled, and extracts and parses the short message content that pushes service application, triggers described data download module and communicates with the data push service device and be connected; Data download module is downloaded the propelling data of this data push service device; Described data processing module is responsible for data downloaded is handled.
2. RFDC terminal as claimed in claim 1, it is characterized in that: also comprise the formation module, after described note processing module is extracted and is parsed the short message content that pushes service application, after the short message content of push using is converted to the interface format of described formation module, submit to described formation module; Described formation module is responsible for pushing the queue management of note, and after data transfer task is finished the call notification module, notify corresponding application program.
3. RFDC terminal as claimed in claim 1 or 2, it is characterized in that: described data download module comprises burst breakpoint transmission module, its size to downloading data fragmentation is carried out the self adaptation adjustment, and the corresponding data push service device of notice carries out the burst transmission in view of the above.
4. RFDC terminal as claimed in claim 3 is characterized in that: described data download module also comprises group sheet module, is used for and will recombinates through described burst breakpoint transmission module data downloaded.
5. RFDC terminal as claimed in claim 3 is characterized in that: described data processing module comprises decompression module, is used for the partial data through described group of sheet module reorganization is decompressed.
6. the self-adapting data method for pushing towards the RFDC terminal comprises the steps:
61) the data push service device sends the note of particular port to the RFDC terminal;
62) after the RFDC terminal is received this note, communicate with the data push service device and to be connected;
63) the RFDC terminal is downloaded the propelling data in the data push server.
7. self-adapting data method for pushing as claimed in claim 6 is characterized in that: described step 63), the data push service device determines whether described data are compressed according to the attribute of data type and RFDC terminal; According to one or more information in cache size, network signal intensity, RFDC end cell state and the type of network link of RFDC terminal the size of burst is carried out adaptive judgement.
8. self-adapting data method for pushing as claimed in claim 7 is characterized in that: in described step 63) after, also comprise described step 64) process that decompresses of data that download is finished.
9. self-adapting data method for pushing as claimed in claim 7, it is characterized in that: described step 62), after the RFDC terminal is received note, handle accordingly and join in the task queue, the queue processing module of self manages and safeguards formation, and calls the burst breakpoint transmission module of self; Burst breakpoint transmission module is connected with the data push service device by the expanded HTTP agreement.
10. self-adapting data method for pushing as claimed in claim 7 is characterized in that: described step 61) preceding, comprise that also the data push service device is by applying the step of obtaining propelling data in the professional server.
11. self-adapting data method for pushing as claimed in claim 7, it is characterized in that: in the described step 1), trigger short message gateway server by the order processing module in the order server of data push service device, trigger short message gateway server and send the note of particular port to the RFDC terminal.
12. self-adapting data method for pushing as claimed in claim 9, it is characterized in that: described step 63), described burst breakpoint transmission module is carried out the self adaptation adjustment according to the one or more parameters in the cache size of RFDC terminal, network signal intensity, battery of mobile phone state, the type of network link information to the size of burst.
13. as right 10 described self-adapting data method for pushing, it is characterized in that: described data push service device comprises by applying the step of obtaining propelling data in the professional server:
131) server submits to data to push the order server that order is given the data push service device;
132) the order server joins in the indent queue after order is verified, handled;
133) the order monitoring module of data push service device is monitored and is managed indent queue;
134) the order processing module of data push service device is got propelling data according to order contents from server;
135) data module of data push service device is deposited after the propelling data packing is handled.
14. the self-adapting data towards the RFDC terminal pushes platform, it is characterized in that: comprise the data push service device, this data push service device is used to accept data and pushes order, obtain the data of required propelling movement, the note that sends particular port is to the RFDC terminal, communicates with it and is connected to trigger the RFDC terminal; After the RFDC terminal is received note, communicate with this data push service device and to be connected; The RFDC terminal is downloaded the data that the data push server need transmit.
15. the self-adapting data towards the RFDC terminal as claimed in claim 14 pushes platform, it is characterized in that: described data push service device comprises order server, short message gateway server and data send server; Described order server to the Service Order that needs push monitor, management and packing data; Described data send server response HTTP request realizes being connected with the RFDC terminal and the data of Service Order is pushed to the RFDC terminal; Described short message gateway server receives and monitors the message that described order server sends, and realizes sending the note of particular port to the RFDC terminal.
16. push platform as claim 14 or 15 described self-adapting datas towards the RFDC terminal, it is characterized in that: described data send server comprises burst module and compression module; Described compression module compresses the packet that is sent by described order server, and described burst module is carried out burst to the packet that is sent by described order server.
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| CN200810241557A CN101765071A (en) | 2008-12-24 | 2008-12-24 | Method and device for pushing adaptive data to wireless data communication terminal |
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| CN103108002A (en) * | 2011-11-10 | 2013-05-15 | 阿里巴巴集团控股有限公司 | Method, system and device for data pushing |
| CN103179520A (en) * | 2011-12-22 | 2013-06-26 | 中国电信股份有限公司 | Data pushing system and method based on receiver state |
| CN103377280A (en) * | 2012-04-26 | 2013-10-30 | 索尼公司 | Information processing apparatus and method, program, and information processing system |
| CN103647803A (en) * | 2013-11-22 | 2014-03-19 | 北京奇虎科技有限公司 | A method for a mobile terminal to subscribe content and an apparatus |
| CN103686864A (en) * | 2012-09-25 | 2014-03-26 | 苏州给力网络通讯技术有限公司 | Bilateral optimization method for mobile network |
| CN103873533A (en) * | 2012-12-18 | 2014-06-18 | 中国电信股份有限公司 | Method, device and system used for pushing information |
| CN104010228A (en) * | 2013-02-27 | 2014-08-27 | 全视技术有限公司 | Apparatus and method for level-based self-adjusting peer-to-peer media streaming |
| CN104243609A (en) * | 2014-09-29 | 2014-12-24 | 中国联合网络通信集团有限公司 | Information service pushing method and device |
| CN106027651A (en) * | 2016-05-21 | 2016-10-12 | 乐视控股（北京）有限公司 | Data continuous transmission method and device |
| CN110519149A (en) * | 2018-05-21 | 2019-11-29 | 深圳市尚云互联技术有限公司 | Information push method and its application system |
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| CN103108002B (en) * | 2011-11-10 | 2016-08-24 | 阿里巴巴集团控股有限公司 | A kind of data push method, system and device |
| CN103108002A (en) * | 2011-11-10 | 2013-05-15 | 阿里巴巴集团控股有限公司 | Method, system and device for data pushing |
| CN103179520A (en) * | 2011-12-22 | 2013-06-26 | 中国电信股份有限公司 | Data pushing system and method based on receiver state |
| CN103179520B (en) * | 2011-12-22 | 2016-03-23 | 中国电信股份有限公司 | A kind of data delivery system based on recipient's state and method |
| CN103377280A (en) * | 2012-04-26 | 2013-10-30 | 索尼公司 | Information processing apparatus and method, program, and information processing system |
| CN103377280B (en) * | 2012-04-26 | 2017-11-07 | 索尼公司 | Message processing device and method and information processing system |
| CN103686864A (en) * | 2012-09-25 | 2014-03-26 | 苏州给力网络通讯技术有限公司 | Bilateral optimization method for mobile network |
| CN103873533A (en) * | 2012-12-18 | 2014-06-18 | 中国电信股份有限公司 | Method, device and system used for pushing information |
| CN103873533B (en) * | 2012-12-18 | 2017-10-03 | 中国电信股份有限公司 | Methods, devices and systems for pushed information |
| CN104010228A (en) * | 2013-02-27 | 2014-08-27 | 全视技术有限公司 | Apparatus and method for level-based self-adjusting peer-to-peer media streaming |
| CN104010228B (en) * | 2013-02-27 | 2017-09-12 | 豪威科技股份有限公司 | A kind of apparatus and method of peer media stream for the adjust automatically based on level |
| CN103647803A (en) * | 2013-11-22 | 2014-03-19 | 北京奇虎科技有限公司 | A method for a mobile terminal to subscribe content and an apparatus |
| CN104243609A (en) * | 2014-09-29 | 2014-12-24 | 中国联合网络通信集团有限公司 | Information service pushing method and device |
| CN106027651A (en) * | 2016-05-21 | 2016-10-12 | 乐视控股（北京）有限公司 | Data continuous transmission method and device |
| CN110519149A (en) * | 2018-05-21 | 2019-11-29 | 深圳市尚云互联技术有限公司 | Information push method and its application system |
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Application publication date: 20100630 |