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Multi-channel large data item broadcast scheduling method based on double-layer scheduling strategy

A two-layer scheduling and broadcast scheduling technology, applied in the field of data transmission and communication, can solve the problems of increasing access time and tuning time, and achieve the effect of reducing the average access time

Inactive Publication Date: 2015-01-07
SHANGHAI UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Not only greatly increases tuning time, but also increases access time

Method used

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  • Multi-channel large data item broadcast scheduling method based on double-layer scheduling strategy
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  • Multi-channel large data item broadcast scheduling method based on double-layer scheduling strategy

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Embodiment Construction

[0045] The preferred embodiments of the present invention are detailed as follows with reference to the drawings:

[0046] A multi-channel big data item broadcast scheduling method based on a two-tier scheduling strategy includes three processes: big data item data sub-packaging, high-level data item channel allocation, and low-level single-channel data item allocation. The specific steps are as follows:

[0047] a. Data subcontracting of big data items includes the following steps:

[0048] (A-1) Initialization, the server obtains the unique identification of all mobile devices requesting data, and requires each mobile device to have an independent identification number;

[0049] (A-2) The total number of available channels obtained by the server is counted as K=3, and all channels are numbered. Each channel is required to have an independent number, which is counted as , , ;

[0050] (A-3). The server obtains all data items accessed by mobile users. The total number is N=7, and all...

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Abstract

The invention discloses a multi-channel large data item broadcast scheduling method based on a double-layer scheduling strategy. The method includes three processes including large data item subpackaging, high-level data item channel allocating and low-level single channel data item allocating. In the initial stage, a server side judges whether large data items are included according to channel capacity of available channels and the data length of all required data items. If the large data items are included, a pre-subpackaging mechanism needs to be carried out and subpackaging is reasonably carried out. A high-level data item channel allocating algorithm is adopted, and the algorithm guarantees optimal channel allocation; meanwhile, the algorithm is optimized, and accordingly the situation that the channels skip many times when mobile subscribers obtain multiple data items is avoided, and average access time is reduced. In actual application, a feedback mechanism can be introduced for a low-layer single channel data item scheduling strategy, when the subscribers of mobile terminals receive data, the server side is fed back, if certain data are not required, the data can be removed in the next pushing cycle, and the average access time is greatly reduced.

Description

Technical field [0001] The invention belongs to data transmission communication technology, and specifically relates to a multi-channel big data item broadcast scheduling method based on a two-layer scheduling strategy. Background technique [0002] Broadcasting data through wireless channels can not only overcome the disadvantages of mobile wireless communication such as asymmetry and low bandwidth, but also support a large number of mobile devices to efficiently access the server-side database at the same time. The cost of sending data is basically independent of the number of receivers. Due to the limited energy consumption of mobile devices, data broadcasting can reduce the consumption of power to obtain data. Wireless data broadcasting is the current mainstream way of transmitting data on wireless networks. Broadcast servers send data through public channels, and mobile terminal users listen to the broadcast channels and download the data they need in time. [0003] How to qu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04W28/16H04W72/04
CPCH04W4/06H04W72/0453
Inventor 严军朱渊婧张晓蓉徐瑞芃
Owner SHANGHAI UNIV
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