Bluetooth: An enabler for personal area networking
Bluetooth: An enabler for personal area networking
复制标题
DOI：
10.1109/65.953231
复制
发表时间：
2001-09-01
期刊：
影响因子：
9.3
通讯作者：
Gerla, M
中科院分区：
文献类型：
--
作者：
Johansson, P;Kazantzidis, M;Gerla, M
我们发现自己今天经常携带许多便携式电子设备；比如笔记本电脑、移动电话、掌上电脑、数码相机、mp3/MD/DVD播放器，它们在我们的工作和私人生活中都曾帮助和娱乐我们。在大多数情况下，这些设备是单独使用的，它们的应用程序不会交互。然而，想象一下，如果它们可以直接交互，从而创建一个信息可以在设备之间无缝流动的网络——这样的个人设备网络通常被称为个人局域网（PAN）。此外，通过（公共）无线局域网接入点和/或通过3G单位移动电话访问互联网将使PAN能够不断联机。提供这种网络所需的廉价短程无线电链路的最有力候选是蓝牙无线技术。从网络的角度来看，PAN将期望有参与者，包括其“自己的”设备和来自其他PAN的“来宾”设备，不断地进出其覆盖范围。为了应对网络的这种易变特性，可以应用自组织网络的概念来创建健壮和灵活的连接。将严格的星型拓扑结构——蓝牙皮康网络体系结构扩展为皮康网络相互连接的散网体系结构，迈出了重要的技术步骤。创建基于分散网的pan的结果是，一些节点将在微微网之间形成网关，这些网关必须能够在它们所属的每个微微网中分时共享它们的存在。虽然蓝牙标准定义了网关节点，但实现interpiconet调度（IPS）的实际机制和算法仍然相当开放。鉴于这方面缺乏研究文献，本文提出了一种处理分散网调度的总体架构。本文还介绍和讨论了一组可行的IPS算法，即交会点算法。
We find ourselves today often carrying numerous portable electronic devices; such as notebook computers, mobile phones, PDAs, digital cameras, and mp3/MD/DVD players, used to help and entertain us in our professional as well as private lives. For the most part, these devices are used separately, and their applications do not interact. Imagine, however, if they could interact directly and thus create a network where information may flow seamlessly between the devices - such a network of personal devices is often referred to as a personal area network, or PAN. Moreover, access to the Internet via a (public) wireless LAN access point and/or via a 3G UNITS mobile phone would enable the PAN to be constantly online. The strongest candidate to provide the cheap short-range radio links necessary to enable such networks is the Bluetooth wireless technology. Seen from a networking perspective, a PAN will be expected to have participants, both of its "own" devices and "guest" devices from other PANS, continuously moving in and out of its coverage. To cope with this volatile nature of the network, the concept of ad hoc networking may be applied to create robust and flexible connectivity. A major technical step is taken when the Bluetooth piconet network architecture, a strict star topology, is extended into a scatternet architecture, where piconets are interconnected. A consequence of creating scatternet-based PANS is that some nodes will form gateways between piconets, and these gateways must be capable of time sharing their presence in each piconet of which they are members. While the Bluetooth standard defines the gateway nodes, the actual mechanisms and algorithms that accomplish the interpiconet scheduling (IPS) are left rather open. Given the lack of research literature in the subject, an overall architecture for handling scheduling in a scatternet is presented in this article. A family of feasible IPS algorithms, referred to as rendezvous point algorithms, is also introduced and discussed.