基于SAR策略提高蓝牙散射网吞吐量  

Improving throughput of bluetooth scatternet by SAR policies

作　　者：郭锋[1] 庄奕琪[2] 

机构地区：[1]西安电子科技大学微电子所,西安710071 [2]浙江万里学院EDA市重点实验室,浙江宁波315100

出　　处：《计算机工程与应用》2007年第16期149-151,共3页Computer Engineering and Applications

摘　　要：在蓝牙微微网中,主设备决定跳频序列。由于各主设备独立跳频,在多个微微网中数据分组会由于跳至同一频隙而产生较高的误分组率,从而导致散射网吞吐量下降。提出了一种避免散射网中微微网相互干扰的有效方法。通过比较彼此之间的跳频序列,微微网可以预测到何时会发生时隙碰撞,然后采用数据分组分割与重组的策略进行回避。仿真表明,该方法明显地提高了散射网的数据吞吐量。In a bluetooth piconet,the master essentially controls the channel.Due to an absence of coordination between independent masters while accessing the wireless medium,devlces will encounter high packet interference if several piconets are simultaneously operating in the same area and the throughput of the devices is decreasing.To alleviate the impact ,an efficient method is proposed by interference-aware SAR（Segmentation/Reassembling） policies.Through comparing the frequency hopping sequence with others,the piconet can aware when the interference happens.Then it can avoid the collision of slots using the data packets segmentation and reassembling policies.Form the simulation,we find the method can improve the data throughput of bluetooth scatternet evidently.

关 键 词：蓝牙 分割与重组 散射网 吞吐量 

分 类 号：TN914[电子电信—通信与信息系统]