基于中央服务器模型的蓝牙多播技术  

Bluetooth multicast technology based on central server model

作　　者：姜太平[1] 郭建亮[1] 

机构地区：[1]安徽工业大学计算机科学与技术学院,安徽马鞍山243002

出　　处：《计算机工程与设计》2015年第6期1452-1456,共5页Computer Engineering and Design

基　　金：安徽省教育厅自然科学科研基金项目(N2012Z027)

摘　　要：为解决蓝牙多播技术在移动智能终端应用的问题,分析蓝牙协议的特点及其通信机制,综合考虑通信设备的数量和设备间通信时间的延迟等因素,提出一个基于中央服务器的多播通信模型。通过改善蓝牙的基带层协议,打破传统蓝牙协议仅能支持7个设备的限制,实现一个可以同时支持更多设备进行通信的中央服务器设备,其对设备的调度采用的是基于活跃度的平等调度算法EASA(equality of active scheduling algorithm),该算法是对RR(round Robin)调度算法的改进,以活跃度为指标,保证调度的公平性,缩短活跃度高的设备间通信时间的延迟。实验结果表明,该模型可以支持多个设备,保证通信的实时性。To solve the application problems of wireless multicast technology in mobile intelligent terminal ,multicast communi‐cation model was proposed based on a central server by analyzing the characteristics of bluetooth protocol and its communication mechanism ,and considering the number of communications equipment and equipment communication time delay .By improving the bluetooth baseband protocol ,breaking the constraint that traditional bluetooth protocol only support seven devices ,a central server device was realized to support more devices to communicate at the same time .The algorithm EASA （equality of active scheduling algorithm） was used .This algorithm improved the RR （round Robin） scheduling algorithm ,and took the activity as an index ,which not only ensured the fairness of the scheduling ,but shortened the delay of high active device communication . The experimental results show that the model supports multiple devices on the one hand ,on the other hand also ensures real‐time communication .

关 键 词：智能终端 蓝牙 多播 通信模型 调度算法 

分 类 号：TN915.04[电子电信—通信与信息系统]