Repairable fountain code design method for unequal local domains

A design method and fountain code technology, applied in the field of communication, can solve the problems of waste of energy consumption and unbalanced communication overhead, and achieve the effects of solving the waste of energy consumption, reducing the energy consumption of communication, and solving the unbalanced communication overhead.

Inactive Publication Date: 2019-05-14
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

[0005] Aiming at the application of data fault-tolerant technology in the above-mentioned D2D distributed storage network and the characteristics of future base station miniaturization, the present invention provides a repairable fountain code design me

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  • Repairable fountain code design method for unequal local domains
  • Repairable fountain code design method for unequal local domains
  • Repairable fountain code design method for unequal local domains

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[0041] It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0042] Specifically, as figure 1 As shown in the figure, the present invention proposes a method for designing a repairable fountain code of non-equilocal domain, which includes the following steps:

[0043] S1, build a hierarchical heterogeneous D2D distributed storage network model based on the macro base station BS, the micro base station MBS and the mobile device;

[0044] S2, through the layered heterogeneous D2D distributed storage network model, deduce the energy cost formula of data download and repair in the case of a certain repair interval, and design a non-volatile storage network suitable for the layered and heterogeneous distributed system. Equal local repairable fountain code and its repair strategy;

[0045] S3, when it is detected that a storage node in the coverage area of ​​the D2D distribut...

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Abstract

The invention discloses a repairable fountain code design method for unequal local domains, which is suitable for equipment cache downloading and data restoration of a hierarchical heterogeneous D2D network, and constructs a hierarchical heterogeneous D2D distributed storage network model based on a macro base station BS, a micro base station MBS and mobile equipment. an energy overhead formula ofdata downloading and data restoration is deduced through the model, and an unequal locality repairable fountain code and a data restoration strategy thereof suitable for a hierarchical heterogeneousstorage network are designed; When it is detected that the storage nodes leave the area, data in the leaving storage nodes are restored and stored to new storage nodes in the area on the basis of an energy overhead formula and the non-equal locality repairable fountain codes, and therefore data downloading requests and system availability of other devices are guaranteed. According to the method, the communication overhead of data downloading and repairing can be reduced, and the problems of unbalanced communication overhead and energy consumption waste caused by an existing D2D distributed storage network are solved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for designing repairable fountain codes in non-isolocal domains. Background technique [0002] With the rapid growth of global mobile data volume, the spectrum resources of mobile communications and the load of base stations are facing great pressure and challenges. Device-to-device communication (D2D) allows user terminals to reuse the spectrum resources of the cellular system. Mobile devices communicate directly with each other without being forwarded by the base station, which relieves the load on the base station and improves the spectrum resources of the cellular system. efficiency. [0003] At the same time, in order to solve the problem of reliable storage of massive data, use the powerful storage, computing and mutual communication capabilities of existing mobile devices to disperse and cache file content to multiple mobile devices, which can meet...

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Application Information

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IPC IPC(8): H04W4/70H04W24/06H04W28/04H04W28/06H04L1/00
Inventor 顾术实李柯王野王念念李月张钦宇
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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