| 基于优先级的数据广播内容选择算法 |
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| 引用本文： | 朱香元,李仁发,杨胜,江文. 基于优先级的数据广播内容选择算法[J]. 计算机工程与应用, 2006, 42(33): 146-149,225 |
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| 作者姓名： | 朱香元 李仁发 杨胜 江文 |
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| 作者单位： | 广东省肇庆学院,计算机科学系,广东,肇庆,526061;湖南大学,计算机与通信学院,长沙,410082;湖南商务职业技术学院,信息工程系,长沙,410205 |
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| 基金项目： | 国家发改委高技术产业发展项目 |
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| 摘 要： | 在以无线网络为代表的移动计算环境中,数据广播是一种有效的数据访问方式。为响应最多用户数据请求,提出了优先级计算模型,进而提出了一种基于优先级的广播内容选择算法。该算法综合考虑了事务存取多个数据项和满足定时限制的要求,根据用户请求队列状态动态选择广播内容,并应用剪枝机制减少了选择开销。实验结果表明它比现有算法有明显的优越性。
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| 关 键 词： | 移动计算 数据广播 内容选择 算法 |
| 文章编号： | 1002-8331（2006）33-0146-04 |
| 收稿时间： | 2006-02-01 |
| 修稿时间： | 2006-02-01 |
Content Selection Algorithm Based on Priority for Data Broadcast |
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| ZHU Xiang-yuan,LI Ren-fa,YANG Sheng,JIANG Wen. Content Selection Algorithm Based on Priority for Data Broadcast[J]. Computer Engineering and Applications, 2006, 42(33): 146-149,225 |
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| Authors: | ZHU Xiang-yuan LI Ren-fa YANG Sheng JIANG Wen |
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| Affiliation: | 1.Department of Computer Sciences,Zhaoqing University,Zhaoqing,Guangdong 526061,China; 2.School of Computer and Communication,Hunan University,Changsha 410082,China; 3.Department of Information Engineering,Hunan Vocational College of Commerce,Changsha 410205,China |
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| Abstract: | Data broadcast is an effective way for data dissemination in mobile computing environments,such as wireless network.ln order to respond to the maximal user data queries,priority computing model is defined.A new content selection algorithm based on priority is presented.In the algorithm,the requirements of accessing multiple data items and meeting the timing limitation of the transaction are both considered.Based on the current user query queue state,the new algorithm selects the broadcast content dynamically,and reduces selection overload by using pruning technique. Experiment results show that it achieves excellent performance comparing with existing algorithms. |
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| Keywords: | mobile computing data broadcast content selection algorithm |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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