计算机应用 ›› 2016, Vol. 36 ›› Issue (3): 591-595.DOI: 10.11772/j.issn.1001-9081.2016.03.591

• 网络与通信 •    下一篇

基于通用即插即用协议服务发现的随机服务系统模型

胡志坤, 宋菁烨, 陈沅   

  1. 中南大学 物理与电子学院, 长沙 410083
  • 收稿日期:2015-08-12 修回日期:2015-10-18 出版日期:2016-03-10 发布日期:2016-03-17
  • 通讯作者: 宋菁烨
  • 作者简介:胡志坤(1976-),男,湖南长沙人,教授,博士,CCF会员,主要研究方向:故障诊断、嵌入式系统;宋菁烨(1992-),女,河南驻马店人,硕士研究生,主要研究方向:智能家居、嵌入式设备;陈沅(1990-),男,湖南长沙人,硕士研究生,主要研究方向:故障诊断、嵌入式系统。
  • 基金资助:
    国家自然科学基金资助项目(61490702);湖南省科技计划项目(2013GK3005);湖南省自然科学基金株洲联合基金资助项目(13JJ9038)。

Random service system model based on UPnP service discovery

HU Zhikun, SONG Jingye, CHEN Yuan   

  1. School of Physics and Electronics, Central South University, Changsha Hunan 410083, China
  • Received:2015-08-12 Revised:2015-10-18 Online:2016-03-10 Published:2016-03-17
  • Supported by:
    This work is partially supported by National Natural Science Foundation of China (61490702), the Hunan Science and Technology Program (2013GK3005), and Zhuzhou Joint Fund Project of Hunan Natural Science Foundation (13JJ9038).

摘要: 在智能家居网络设备自动发现过程中,网络设备端随机独立地选择延时发送服务响应消息,通常出现严重的消息拥塞现象。为解决智能家居网络中服务响应消息拥塞问题,以智能家居标准协议——通用即插即用(UPnP)进行自动发现设备为例,考虑不同应用场景中对服务发现过程的可靠性和实时性有不同要求,提出一种基于UPnP服务发现的随机服务系统模型。设计了集成系统响应指标和等待指标的通信损益函数,推导得到了最佳缓存队列长度与损益系数之间的关系。通过对比不同缓存队列长度中响应消息的到达时间、离开时间、等待时间和停留时间,验证了设计损益指标的必要性和随机服务系统模型的可行性。

关键词: 随机服务系统模型, 通用即插即用, 服务发现, 损益系数, 队列长度

Abstract: In the automatic-discovery process of smart home network devices, serious jams occur due to randomly and independently choosing delay time to send service response message. In order to solve this problem, taking Universal Plug and Play (UPnP) service discovery protocol as an example, considering different demands of reliability and real-time performance, a random service system model based on UPnP service discovery was proposed. A profit-loss function including system response index and waiting index was designed. Finally, the relation between the best length of buffer queue and the profit-loss coefficient was obtained. Through the comparison of arrival time, departure time, waiting time and travel time with different buffer queue lengths, the necessity of designing profit-loss function and the feasibility of this proposed model are verified.

Key words: random service system model, Universal Plug and Play (UPnP), service discovery, profit-loss coefficient, queue length

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