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File repair system and method

A technology for repairing systems and files, applied in transmission systems, digital transmission systems, electrical components, etc.

Active Publication Date: 2011-05-11
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[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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  • File repair system and method
  • File repair system and method

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Embodiment Construction

[0018] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0019] The file repairing device in the MBMS system includes: transforming the existing passing network elements (partial or all passing network elements) used for MBMS into passing network elements for controlling file repair nodes after functional transformation; converting the existing BM-SC through After the function transformation, it becomes the BM-SC for generating and delivering the file repair node list. The file repair system includes the passing network element of the above-mentioned control file repair node, the BM-SC after functional transformation, and the file repair nodes distributed around the passing network element.

[0020] The present invention provides a file repair system, including a broadcast / multicast service server and passing network elements, wherein a file repair node is also provided, and...

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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 realizingfile 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 repair system and method, in particular to a file repair system and a file repair method based on a multimedia multicast service in the field of mobile communication. Background technique [0002] Multimedia Broadcast / Multicast Service (MBMS for short) enables the network to provide a large number of users with the same high-speed 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 code (Forward Error Correction, FEC) it uses cannot guarantee 100% reliability. So the file repair process is necessary for transferring downloadable data using MBMS. [0003] There are two types of MBMS file repair methods: point-to-point (PTP) and point-to-multipoint (PTM). The point-to-multipoint repair method cannot achieve reliable transmission. The existin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W88/18H04L12/18H04L1/00
Inventor 谢丰
Owner CHINA MOBILE COMM GRP CO LTD
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