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Broadcast Scheduling Method for Multi-channel Big Data Items Based on Two-layer Scheduling Strategy

A two-layer scheduling and broadcast scheduling technology, which is applied in the field of data transmission and communication, can solve the problems of increasing access time and tuning time, and achieve the effects of reducing power consumption, reducing the number of channel jumps, and reducing data access conflicts

Inactive Publication Date: 2018-01-02
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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  • Broadcast Scheduling Method for Multi-channel Big Data Items Based on Two-layer Scheduling Strategy
  • Broadcast Scheduling Method for Multi-channel Big Data Items Based on Two-layer Scheduling Strategy
  • Broadcast Scheduling Method for Multi-channel Big Data Items Based on Two-layer Scheduling Strategy

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Embodiment Construction

[0045] Preferred embodiments of the present invention are described in detail as follows in conjunction with accompanying drawings:

[0046] A multi-channel big data item broadcast scheduling method based on a two-layer scheduling strategy, including three processes of big data item data packetization, 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 large data items, including the following steps:

[0048] (a-1), initialization, the server obtains the unique identification of all mobile devices requesting data, requiring 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 side acquires all data items accessed by ...

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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 in particular relates to a multi-channel large 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 asymmetry and low bandwidth disadvantages of mobile wireless communication, but also support a large number of mobile devices to efficiently access the server-side database at the same time, and 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 power consumption of acquiring data. Wireless data broadcasting is currently the mainstream method of wireless network data transmission. The broadcast server sends data through the public channel, and the mobile terminal users listen to the broadcast channel and download the data they need in time. ...

Claims

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Application Information

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Patent Type & Authority Patents(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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