CAJ | 학술논문

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。
위해결람아다파기술재이동지능종단응용적문제，분석람아협의적특점급기통신궤제，종합고필통신설비적수량화설비간통신시간적연지등인소，제출일개기우중앙복무기적다파통신모형。통과개선람아적기대층협의，타파전통람아협의부능지지7개설비적한제，실현일개가이동시지지경다설비진행통신적중앙복무기설비，기대설비적조도채용적시기우활약도적평등조도산법 EASA （equality of active scheduling algorithm），해산법시대 RR （round Robin）조도산법적개진，이활약도위지표，보증조도적공평성，축단활약도고적설비간통신시간적연지。실험결과표명，해모형가이지지다개설비，보증통신적실시성。
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 .