电信科学 ›› 2014, Vol. 30 ›› Issue (2): 33-39.doi: 10.3969/j.issn.1000-0801.2014.02.004

• 研究与开发 • 上一篇    下一篇

混合流媒体系统的资源搜索机制研究

郭大钢1,卓明琴2,张继荣3   

  1. 1 西安邮电学院邮电技术公司 西安 710061
    2 中兴通讯股份有限公司南京研发中心 南京 210012451191
    3 西安邮电大学通信与信息工程学院 西安 710121 210012451191
  • 出版日期:2014-02-15 发布日期:2017-06-20
  • 基金资助:
    工业和信息化部通信软科学项目

Research of Resources Search Mechanism on Hybrid Stream Media System

Dagang Guo1,Mingqin Zhuo2,Jirong Zhang3   

  1. 1 Posts and Telecommunications Technology Company，Xi’an University of Posts ＆ Telecommunications，Xi’an 710061，China
    2 Nanjing R＆D Center，ZTE Corporation，Nanjing 210012，China
    3 Department of Communication ＆ Information Engineering，Xi’an University of Posts ＆ Telecommunications，Xi’an 710121，China
  • Online:2014-02-15 Published:2017-06-20

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摘要：

在基于内容分发网络和对等网络的混合流媒体系统中引入基于资源知名度的混合搜索机制，依据不同的资源知名度，分别采用结构化搜索和泛洪搜索，提高了搜索效率。结构化部分采用改进型Chord 搜索机制，其路由时延较传统Chord搜索大幅度降低；泛洪部分采用基于布鲁曼滤波器的泛洪搜索，相比以往的泛洪搜索，网络中的冗余查询消息明显减少。此外，系统还根据资源知名度的不同分别采用多关键字查找和语义相关度匹配来支持资源的模糊查找，提高了搜索成功率。

关键词: 资源知名度, 结构化搜索, 泛洪搜索, 布鲁曼滤波器, 模糊查找

Abstract:

A hybrid resources search mechanism based on the popularity of resources was proposed in the hybrid peer to peer stream media system based on CDN and P2P.A different search mechanism was used according to the different popularity of resources，such as structured search or flooding.By this way，the efficient of search was effectively improved.In the part of structured search，an improved Chord search mechanism was proposed.Compared with the traditional Chord search mechanism，the router delay was greatly reduced.A flooding search mechanism based on bloom filter was proposed in the part of flooding.Compared with the traditional flooding search mechanism，it can significantly lower the redundancy transmission of search request.Also，according to the different popularity of resources，multi-keyword query and the concept of semantic correlation were proposed to support fuzzy search，and the rate of successful search was greatly increased.

Key words: resources popularity, structured search, flooding search, bloom filter, fuzzy search

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