共查询到16条相似文献,搜索用时 46 毫秒
1.
2.
4.
6.
7.
8.
9.
10.
11.
廖欣 《信息技术与标准化》2003,(12):51-55
蓝牙(Bluetooth)技术作为一项无线个人局域网络的开放标准,正越来越多地受到生产厂商和研究机构的广泛关注。本文简单介绍了蓝牙技术及其标准化状况。对蓝牙特别兴趣集团(SIG)所组织,开展的产品认证要求和认证程序进行了描述。 相似文献
12.
本文依据Ericsson蓝牙开发包EBDK的特点,从多个方面解析蓝牙模块与计算机系统的通信过程,并介绍软件编程中的接口设置。 相似文献
13.
Bluetooth的语音传输分析 总被引:1,自引:0,他引:1
1 引言 蓝牙也叫蓝芽起源于Ericsson公司在1994年起所推出的一个技术开发计划,其目的是解决移动电话边界设备的连线问题。蓝牙通过无线通信技术与数据通信技术的融合,为所有的移动装置之间提供一个有效的无线连接。各种移动设备,包括移动电话、无线电话、笔记本电脑、手持电话、个人数字助理(PDA)和数字相机等,都可以通过蓝牙来进行连接。本文主要分析蓝牙的无线语音传输问题。2 蓝牙技术简介 蓝牙技术是一种无线的数据与语音通信的开放性全球规范,它以低成本的近距离无线连接为基础,为固定与移动设备通信环境建立一个特别连… 相似文献
14.
15.
16.
Goutam Chakraborty Kshirasagar Naik Debasish Chakraborty Norio Shiratori David Wei 《Wireless Networks》2010,16(2):421-436
Device discovery and connection establishment are fundamental to communication between two Bluetooth (BT) devices. In this
paper, we give an analytical model of the time it takes for the master in a piconet to discover one slave. We show that, even
in the absence of packet interference, the discovery time can be long in some instances. We have simulated the discovery protocol
by actually implementing it to validate the analytical model. By means of simulations, we show how discovery time is affected
by (i) the presence of multiple potential slaves, and (ii) changes in the maximum backoff limit. Using simulation studies
we observed the effectiveness of two proposed improvements to device discovery, namely, (i) avoiding repetitions of the A and B trains before a train switch, and (ii) eliminating the idea of random backoff, or reducing the backoff limit. We show that
discovery time can be reduced by avoiding repetitions of the A and B trains before a train switch. However, complete elimination of the random backoff is not a good idea, as discovery time will
be too long when the number of BT devices is large. Instead, choosing a small backoff limit of 250–300 slots is highly effective
in reducing discovery time even in the presence of a large number (say, 50) of potential slaves. 相似文献