File repair system and method

一种修复系统、文件的技术，应用在传输系统、数字传输系统、电气元件等方向，能够解决减少修复传输量、增加文件修复服务器超载、无法减缓上行和下行通道拥塞等问题，达到小传输代价、减少通信量、避免超载的效果

Active Publication Date: 2008-09-10
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the file repair server in the prior art adopts centralized management, the congestion of the uplink and downlink channels cannot be alleviated; if decentralized management is adopted, in addition to distributing downloaded data to the file repair server itself will bring transmission volume, how to effectively distribute these server, has reached a reduction in the amount of transfers when repairing is also an issue
[0005] In terms of file content storage, the file repair server in the prior art needs to store complete transmission content. When repair requests are frequent, the data will be repeatedly transferred to memory, greatly increasing the possibility of overloading the file repair server

Method used

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Embodiment Construction

[0015] The technical solutions of the present invention will be further described in detail below through the accompanying drawings and embodiments.

[0016] The file repairing device in the MBMS system includes: the existing pass-through network elements (part or all of the pass-through network elements) used for MBMS are transformed into the pass-through network element used to control the file restoration node; the existing BM-SC is passed through After functional transformation, it becomes BM-SC for generating and issuing file repair node list. The file repair system includes the above-mentioned passing network element of the control file repairing node, the BM-SC after functional transformation, and the file repairing node distributed around the passing network element.

[0017] The present invention provides a file repair system, which includes a broadcast / multicast service server and a transit network element, wherein a file repair node is also provided, and the file repair...

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Abstract

The invention relates to a file recovery system. The system comprises a BM-SC and a via network element, wherein, the system is also provided with a file recovery node which is connected with the via network element which controls the file recovery node, and the file recovery node is used for storing corresponding data block in dialog information forwarded by the via network element for realizing file recovery; the via network element which controls the file recovery node also comprises a calculation module which is used for calculating the usable resource information of the file recovery nodes and a report module which is connected with the calculation module and used for reporting the status information of the file recovery node to the BM-SC; the BM-SC also comprises a distribution module which is used for generating the list of the file recovery node. The invention also relates to a file recovery method which comprises the steps of distributing dialog information and the file recovery node list by the BM-SC, storing the corresponding data block by the file recovery node and requesting file recovery from a terminal. The file recovery system reduces communication traffic when data is distributed and downloaded to the file recovery node and avoids the overload of the file recovery node.

Description

Technical field [0001] The invention relates to a file repairing system and method, in particular to a file repairing system and a file repairing method based on a multimedia multicast service in the field of mobile communication. Background technique [0002] Multimedia Broadcast / Multicast Service (MBMS) can enable the network to provide a large number of users with the same high-rate multimedia data service at the same time through multicast, thereby greatly saving network resources. MBMS uses the File Delivery over Unidirectional Transport (FLUTE) protocol to carry download data, but the Forward Error Correction (FEC) it uses cannot guarantee 100% reliability. Therefore, the file repair process is necessary for using MBMS to transfer download data. [0003] MBMS file repair methods are divided into two types: point-to-point (PTP) and point-to-multipoint (PTM). The point-to-multipoint repair method cannot achieve reliable transmission. The existing point-to-point repair system ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/22H04L12/18H04L1/00
Inventor 谢丰
Owner CHINA MOBILE COMM GRP CO LTD
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