Decentralized video stream service method and system supported by mobile crowdsourcing

A technology of decentralization and service method, applied in the field of video streaming service and mobile crowdsourcing, it can solve the problems of low performance of mobile video streaming service and unprotected privacy of participants, so as to achieve strong reliability and reduce energy consumption. , Improve the effect of service time

Active Publication Date: 2019-07-26
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Purpose of the invention: In order to overcome the deficiencies of the prior art, the present invention provides a decentralized video streaming service method supported by mobile crowdsourcing, which can solve the problem of low service performance of mobile video streaming and lack of privacy of participants protection, on the other hand, the present invention also provides a decentralized video streaming service system supported by mobile crowdsourcing

Method used

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  • Decentralized video stream service method and system supported by mobile crowdsourcing
  • Decentralized video stream service method and system supported by mobile crowdsourcing
  • Decentralized video stream service method and system supported by mobile crowdsourcing

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Embodiment 1

[0052] Such as figure 1 , the invention discloses a decentralized video streaming service method supported by mobile crowdsourcing, including:

[0053] Step 1, obtain the requester's location information and service request status.

[0054] Within the coverage of the cellular network base station, at a certain moment, there are M participants requesting video services, expressed as R={r 1 ,r 2 ,...,r M}. r m Indicates the mth requestor (1≤m≤M). r m represented by a five-tuple as r m =(rx m ,ry m ,A m ,rs m ,rf m ). Among them, (rx m ,ry m ) indicates the position of the mth service requester; A m Indicates the radius of the effective range of the mth requestor; (rs m ,rf m ) indicates the time period during which the mth service requester expects the request to be responded.

[0055] Step 2. Obtain the information of crowdsourcing service providers and the provision of resources, and combine with step 1 to determine the privacy protection mechanism of crowds...

Embodiment 2

[0102] The present invention also provides a decentralized video streaming service system supported by mobile crowdsourcing, such as figure 2 As shown, the system includes:

[0103] The first obtaining module 1 is used to obtain the information of the requester and the constraints of the requester and the requested service;

[0104] The first acquisition module 1 also includes:

[0105] The requester representation unit 11 is used to represent the information of the requester, and the requester is represented as: R={r 1 ,r 2 ,...,r M};

[0106] The constraint condition representation unit 12 is used to represent the constraint condition of the requested service, specifically: the requester r m expressed as r m =(rx m ,ry m ,A m ,rs m ,rf m ), where, 1≤m≤M, (rx m ,ry m ) represents the position of the mth requester, A m Indicates the radius of the effective range of the mth requester, and the maximum distance between the specified requester and the requester that...

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Abstract

The invention discloses a decentralized video stream service method supported by mobile crowdsourcing. The method comprises the following steps: acquiring information of a requester and constraint conditions of the requester and requested service; obtaining information of a crowdsourcing server and a service providing condition, and determining a privacy protection mechanism of the crowdsourcing participant according to the service request condition of the requester; according to a DBSCAN algorithm and the position information of the requester, carrying out clustering division on the requesterto obtain the requester capable of considering the request of the requester; generating a service providing strategy for the service provider by using IDP according to the service request condition of the requester capable of considering the request, and calculating a time utilization rate and energy consumption corresponding to each strategy; and evaluating the service providing strategy througha simple weighting method and a multi-standard decision algorithm to obtain an optimal service providing strategy. According to the method, the problems of service request response as soon as possible, participant privacy protection, mobile crowdsourcing service performance and the like are comprehensively considered, the service time is prolonged to the maximum extent, and energy consumption isreduced.

Description

technical field [0001] The invention relates to the field of video streaming service and mobile crowdsourcing, in particular to a decentralized video streaming service method and system supported by mobile crowdsourcing. Background technique [0002] With the continuous development of wireless transmission technology, various mobile video streaming applications emerge, so that the amount of data transmitted by mobile video streaming accounts for the vast majority of wireless transmission data. Video applications such as video conferencing and video games have high requirements on video transmission quality and transmission time. However, the bandwidth of 3G / 4G cellular network is low, and the time to transmit video stream is relatively long, so it is difficult to meet the requirements of delay-sensitive mobile video stream; on the other hand, the traffic charges generated by cellular network transmission are relatively high, The cellular network will not be the first choice...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L29/06H04W12/00H04W12/03
CPCH04L63/0428H04L65/40H04W12/03H04L67/51H04L67/60Y02D30/70
Inventor 许小龙刘庆祥徐占洋陈裕豪顾仁昊
Owner NANJING UNIV OF INFORMATION SCI & TECH
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