IEEE 802.15标准化概况
<div>IEEE 802.15标准编号和IEEE 802.11编号方法稍有不同，IEEE802.15标准为双点编号，从阿拉伯数字“1”开始，如任务组1制定的标准编号为IEEE 802.15.1，如果对IEEE
802.15.1有增强规范，那么编号采用英文字母，从“a”开始，以此排序，如“IEEE 802.15.1a”。</div>
<div> </div>
<div>具体IEEE 802.15工作组下各任务组及活动见下表。</div>
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<div>任务组</div>
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<div>标签</div>
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<div>描述</div>
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<div>任务组1/蓝牙</div>
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<div>TG1</div>
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<div>简介</div>
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<p>该规范基于<span><a href="http://www.bluetooth.org/" target="_blank">Bluetooth™</a> v1.1</span>，定义了<a href="http://www.bluetooth.org/" target="_blank">Bluetooth™</a>无线技术的较低层（L2CAP，LMP， 基带和无线）。</p>
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<div>状态</div>
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<div>该标准已经发布，标准号为：IEEE Std 802.15.1<sup>TM</sup>-2002。</div>
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<div>任务组2/无线共存</div>
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<div>TG2</div>
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<div>简介</div>
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<div>研究WLAN和WPAN设备的共存机制。</div>
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<div>状态</div>
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<div>该任务组目前处于休止状态，直到被关注。</div>
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<div>任务组3/高速率</div>
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<div>TG3</div>
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<td style="width: 40.8pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="54">
<div>简介</div>
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<div>速率为20Mbit/s或者更高的WPAN规范。工作频段为2.4GHz。MAC和PHY的一些特性如下：</div>
<p style="margin-left: 21pt; text-indent: -21pt;"><span><span>Ø<span style="font: 7pt "Times New Roman";"> </span></span></span>数据率：11，22，33，44，和55Mbps；</p>
<p style="margin-left: 21pt; text-indent: -21pt;"><span><span>Ø<span style="font: 7pt "Times New Roman";"> </span></span></span>Ad hoc对等网络；</p>
<p style="margin-left: 21pt; text-indent: -21pt;"><span><span>Ø<span style="font: 7pt "Times New Roman";"> </span></span></span>安全性；</p>
<p style="margin-left: 21pt; text-indent: -21pt;"><span><span>Ø<span style="font: 7pt "Times New Roman";"> </span></span></span>低功耗；</p>
<p style="margin-left: 21pt; text-indent: -21pt;"><span><span>Ø<span style="font: 7pt "Times New Roman";"> </span></span></span>低费用；</p>
<p style="margin-left: 21pt; text-indent: -21pt;"><span><span>Ø<span style="font: 7pt "Times New Roman";"> </span></span></span>满足手持设备用户图像和对媒体应用的需求。</p>
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<div>状态</div>
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<div>该标准已经发布，标准号为：IEEE Std 802.15.3<sup>TM</sup>-2003。</div>
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<div>任务组3a</div>
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<div>TG3a</div>
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<div>状态</div>
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<div>该任务组的PAR已被取消</div>
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<div>任务组3b</div>
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<div>TG3b</div>
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<div>简介</div>
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<p>该项目是对<span>IEEE 802.15.3-2003 MAC</span>的补篇，改进MAC的实现和互操作性。</p>
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<div>状态</div>
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<td style="width: 222.7pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="297">
<div>该标准已经发布，标准号为：IEEE Std 802.15.3b<sup>TM</sup>-2005。</div>
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<div>任务组3c</div>
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<div>TG3c</div>
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<div>简介</div>
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<p>该项目是对<span>IEEE 802.15.3-2003 PHY</span>的补篇，规定了一种物理层可选的毫米波规范。工作于FCC 47 CFR 15.255规定的豁免频段57-64 GHz，速率可达1 Gbps。</p>
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<div>状态</div>
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<td style="width: 222.7pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="297">
<div>该标准已经发布，标准号为：IEEE Std 802.15.3c<sup>TM</sup>-2009。</div>
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<div>任务组4/低速率</div>
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<div>TG4</div>
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<div>简介</div>
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<div>本规范定义了四种不同的PHY，三种PHY使用DSSS技术，一种使用PSSS技术。</div>
<div>本项目研究一种低速率的WPAN，电池寿命可为数月到数年。工作在无线执照豁免频段，潜在的应用包括传感器、交互玩具、智能卡、远程控制和家电。一些特性如下：</div>
<p style="margin-left: 21pt; text-indent: -21pt;"><span><span>Ø<span style="font: 7pt "Times New Roman";"> </span></span></span>数据率为250 kbps, 40 kbps, 和20 kbps；</p>
<p style="margin-left: 21pt; text-indent: -21pt;"><span><span>Ø<span style="font: 7pt "Times New Roman";"> </span></span></span>两种寻址模式：短16位和64位IEEE寻址；</p>
<p style="margin-left: 21pt; text-indent: -21pt;"><span><span>Ø<span style="font: 7pt "Times New Roman";"> </span></span></span>支持待机设备，如操作杆；</p>
<p style="margin-left: 21pt; text-indent: -21pt;"><span><span>Ø<span style="font: 7pt "Times New Roman";"> </span></span></span>CSMA-CA信道接入；</p>
<p style="margin-left: 21pt; text-indent: -21pt;"><span><span>Ø<span style="font: 7pt "Times New Roman";"> </span></span></span>自动网络创建；</p>
<p style="margin-left: 21pt; text-indent: -21pt;"><span><span>Ø<span style="font: 7pt "Times New Roman";"> </span></span></span>完全握手协议，为可靠传输；</p>
<p style="margin-left: 21pt; text-indent: -21pt;"><span><span>Ø<span style="font: 7pt "Times New Roman";"> </span></span></span>电源管理，保证低电源消耗；</p>
<p style="margin-left: 21pt; text-indent: -21pt;"><span><span>Ø<span style="font: 7pt "Times New Roman";"> </span></span></span>在2.4GHz频段上16个信道，915MHz上10个信道，868MHz频段1个信道。</p>
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<div>状态</div>
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<div>该标准已经发布，标准号为：IEEE Std 802.15.4<sup>TM</sup>-2003。</div>
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<div>任务组4a</div>
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<div>TG4a</div>
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<td style="width: 40.8pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="54">
<div>简介</div>
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<p>该项目是对<span>IEEE 802.15.4-2006 PHY</span>的补篇，规定了两种物理层可选的规范：超宽带（UWB）和chirp扩频（CSS）。UWB PHY使用三种频段：1GHz一下，3~5GHz之间，以及6~10GHz之间；CSS PHY使用2.4GHz。<span style="background: none repeat scroll 0% 0% yellow;">注</span><span style="background: none repeat scroll 0% 0% yellow;">1</span>。</p>
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<div>状态</div>
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<td style="width: 222.7pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="297">
<div>该标准已经发布，标准号为：IEEE Std 802.15.4a<sup>TM</sup>-2007。</div>
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<div>任务组4b</div>
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<div>TG4b</div>
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<td style="width: 40.8pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="54">
<div>简介</div>
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<p>该项目是对<span>IEEE 802.15.4-2003 </span>的修改完善。订正了歧义性、减少了不必要的复杂性、增加了安全密钥使用的灵活性等等。</p>
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<div>状态</div>
</td>
<td style="width: 222.7pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="297">
<div>该标准已经发布，标准号为：IEEE Std 802.15.4a<sup>TM</sup>-2007。</div>
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<div>任务组4c</div>
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<div>TG4c</div>
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<td style="width: 40.8pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="54">
<div>简介</div>
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<p>该项目是对<span>IEEE 802.15.4 PHY </span>的补篇。该补篇根据中国无线电管理规定，定义了用于779-787MHz频段的MPSK PHY和O-QPSK PHY的WPAN规范。</p>
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<div>状态</div>
</td>
<td style="width: 222.7pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="297">
<div>该标准已经发布，标准号为：IEEE Std 802.15.4c<sup>TM</sup>-2009。</div>
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<div>任务组4d</div>
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<div>TG4d</div>
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<div>简介</div>
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<td style="width: 222.7pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="297">
<p>该项目是对<span>IEEE 802.15.4-2006 </span>的补篇，为日本新分配的频段（950MHz -956MHz）定义物理层及相应的MAC。</p>
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<div>状态</div>
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<div>该标准已经发布，标准号为：IEEE Std 802.15.4d<sup>TM</sup>-2009。</div>
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<div>任务组4e</div>
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<div>TG4e</div>
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<div>简介</div>
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<td style="width: 222.7pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="297">
<p>该项目是对<span>IEEE 802.15.4-2006 MAC</span>的补篇规范，增强并增加MAC的功能性：a)更好的支持市场；b)允许与中国WPAN标准兼容。</p>
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<div>状态</div>
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<td style="width: 222.7pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="297">
<div>活动。</div>
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<td style="width: 77.4pt; border-width: medium 1pt 1pt; border-style: none solid solid; border-color: -moz-use-text-color windowtext windowtext; padding: 0cm 5.4pt;" rowspan="2" valign="top" width="103">
<div>任务组4f/主动RFID系统</div>
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<td style="width: 81.95pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" rowspan="2" valign="top" width="109">
<div>TG4f</div>
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<td style="width: 40.8pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="54">
<div>简介</div>
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<td style="width: 222.7pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="297">
<div>该项目定义新的PHY（UWB, 2.4GHz和433MHz），并对IEEE 802.15.4-2006 MAC进行增强，以便支持主动RFID系统双向和位置确定应用。</div>
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<div>状态</div>
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<td style="width: 222.7pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="297">
<div>活动。</div>
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<td style="width: 77.4pt; border-width: medium 1pt 1pt; border-style: none solid solid; border-color: -moz-use-text-color windowtext windowtext; padding: 0cm 5.4pt;" rowspan="2" valign="top" width="103">
<div>任务组4g/智能应用网络</div>
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<td style="width: 81.95pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" rowspan="2" valign="top" width="109">
<div>TG4g</div>
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<td style="width: 40.8pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="54">
<div>简介</div>
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<td style="width: 222.7pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="297">
<p>该项目是对<span>IEEE 802.15.4 PHY</span>的增强，目的是提供全球标准，便利大规模过程控制应用如网格。</p>
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<td style="width: 40.8pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="54">
<div>状态</div>
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<div>活动。</div>
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<td style="width: 77.4pt; border-width: medium 1pt 1pt; border-style: none solid solid; border-color: -moz-use-text-color windowtext windowtext; padding: 0cm 5.4pt;" rowspan="2" valign="top" width="103">
<div>任务组6/体域网</div>
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<td style="width: 81.95pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" rowspan="2" valign="top" width="109">
<div>TG6</div>
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<td style="width: 40.8pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="54">
<div>简介</div>
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<td style="width: 222.7pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="297">
<div>该项目定义优化低功率设备的通信标准，能够在人体（同时不限于人体）上、内或者周围操作，用于包括医疗、消费电子/娱乐或者其他等用途的不同应用。</div>
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<div>状态</div>
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<div>活动。</div>
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<td style="width: 77.4pt; border-width: medium 1pt 1pt; border-style: none solid solid; border-color: -moz-use-text-color windowtext windowtext; padding: 0cm 5.4pt;" rowspan="2" valign="top" width="103">
<div>任务组7/可见光通信</div>
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<div>TG7</div>
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<div>简介</div>
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<td style="width: 222.7pt; border-width: medium 1pt 1pt medium; border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; padding: 0cm 5.4pt;" valign="top" width="297">
<div>该项目规定可见光通信（VLC）的PHY和MAC标准。</div>
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<div>状态</div>
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<div>活动。</div>
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</tbody>
</table>
<div> </div>
<div> </div>
<div><span style="background: none repeat scroll 0% 0% yellow;">注</span><span style="background: none repeat scroll 0% 0% yellow;">1</span><span style="background: none repeat scroll 0% 0% yellow;">：</span>IEEE
802.15.4a低速率可选择PHY任务组，如其名称所示，定义802.15.4补篇，目标是允许一定范围内（1米之内）高聚合吞吐量通信，并且在
WPAN规定范围之内的低电源使用。TG4a是标准化UWB的其中一个任务组，另一个是TG3a。然而，因为对手之间两种UWB技术（直接序列UWB和多
频带正交频分复用OFDM UWB）竞争的僵局，TG3a被取消。直接序列UWB，该技术由ZigBee联盟推动，落户于TG4a，而多频带OFDM
UWB被WiMedia联盟采用，其标准发布为ECMA-368（ECMA是欧洲制造商协会）.</div>
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