Journal of Computer Applications ›› 2013, Vol. 33 ›› Issue (03): 603-606.DOI: 10.3724/SP.J.1087.2013.00603

• Network and communications •     Next Articles

Channel allocation model and credibility evaluation for LBS indoor nodes

LIU Zhaobin1,2*, LIU Wenzhi1, FANG Ligang1,TANG Yazhe2   

  1. 1. Jiangsu Province Support Software Engineering Research and Development Center for Modern Information Technology Application in Enterprise, Suzhou Jiangsu 215104, China;
    2. School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an Shaanxi 710049, China
  • Received:2012-09-10 Revised:2012-11-18 Online:2013-03-01 Published:2013-03-01
  • Contact: Liu ZhaoBin



  1. 1.江苏省现代企业信息化应用支撑软件工程技术研究开发中心,江苏 苏州 215104;
    2.西安交通大学 电子与信息工程学院,西安 710049
  • 通讯作者: 刘昭斌
  • 作者简介:刘昭斌(1965-),男,山东威海人,副教授,CCF高级会员,主要研究方向:感知计算、无线传感器网络; 刘文芝(1967-),女,湖南衡阳人,副教授,主要研究方向:无线传感器网络; 方立刚(1980-),男,安徽歙县人,副教授,博士,主要研究方向:传感器应用、地理空间信息; 唐亚哲(1970-),男,陕西西安人,副教授,博士生导师,博士,主要研究方向:无线网络、网络安全。
  • 基金资助:

    国家自然科学基金资助项目(61170245); 江苏省科技计划项目(BK2012164); 苏州市科技计划项目(SYG201257)。

Abstract: In response to the issue that GPS is unable to carry out Location-Based Service (LBS) in indoor environment, a LBS indoor channel allocation model, credibility evaluation and control method was presented in this paper, which integrated GPS, Wi-Fi, ZigBee and Bluetooth technologies. It solved the problem arising from combination channel allocation, including the evaluation of the traffic load, the available Radio Frequency (RF), and non-overlapping RF channels number of each node. Each Access Point(AP)'s signal strength built the prediction model with reference point. The optimization algorithm was designed to determine and select the credibility of combination channel based on the energy evaluation. It adaptively selected neighbors with highest comprehensive effects to participate in iterative optimization. The simulation result indicates this method can effectively inhibit the proliferation of communication interference error in the network, reduce the positioning complexity, and improve the positioning accuracy in addition to improving scalability and robustness of the entire network.

Key words: Location-Based Service (LBS), channel allocation, credibility, evaluation, energy measure

摘要: 针对位置服务(LBS)在深度室内环境下将无法进行GPS定位问题,提出一种融合GPS、Wi-Fi、ZigBee和蓝牙混合的LBS室内节点信道分配模型和可信度评估与控制方法。信道分配模型解决了组合信道分配包括业务负载判据和每个节点的可用射频及非重叠的射频信道的数量问题。通过对每一个接入点(AP)的信号强度建立与参考点的信号强度的预测模型,采用基于能量度量优化算法判断选择组合信道可信度,自适应选择性能好的邻居节点参与迭代优化。仿真结果表明,该方法能有效抑制通信干扰误差在网络内的扩散,降低定位复杂度,提高定位精度,同时提高整个网络的扩展性与鲁棒性。

关键词: 基于位置服务, 信道分配, 可信度, 评估, 能量度量

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