构建智慧家庭网络的多终端互联技术研究与应用探讨

doi:10.3969/j.issn.1000-0801.2014.05.005

Abstract

Abstract:

Family multi-terminal interconnection is the core technology to realize smart home. Mainstream technology of family multi-terminal interconnection and networking at domestic and foreign were analyzed systematically. Through comparing technical characteristics and evaluating technical parameters of various technologies including application interconnection, IP networking and sensor networking, additionally analyzing their current situation and development trending of the industry, products suggestions and typical application of family multi-terminal interconnection and networking technology were proposed.

Key words: smart home, intelligent terminal, home network, application interconnection, IP networking, sensor networking

Jianting Han,Xiang Wan. Study and Application of Multi-Terminal Interconnection Technology to Build Smart Home Network[J]. Telecommunications Science, 2014, 30(5): 33-39.

	DLNA	Miracast	AllJoyn
核心特色	跨终端媒体分享与分发	无线屏幕镜像	不同终端的互操作，开源互联框架
典型应用	将手机的照片和视频投送到大屏幕	电视与手机显示相同内容	除媒体共享外，还可延伸到智能家居应用
发起组织	DLNA	Wi-Fi联盟	Qualcomm
关键技术	HTTP、UPnP、RTP	Wi-FiDirect、WMM、WPS、WPA2	基于总线的分布式软件架构
媒体格式	图片：JPEG、PNG、GIF、TIFF；音频：LPCM AAC、AC-3、ATRAC 3plus、mp3、wma9；视频：MPEG2、MPEG-1、MPEG-4、AVC、wmv9	音频：LPCM AAC、AC-3视频：H.264（最高1080P,60Hz）	未定义
连接技术	Wi-Fi、Wi-Fi Direct、以太网、PLC、MoCA	仅Wi-Fi Direct	Wi-Fi、Wi-Fi Direct、PLC、以太网、蓝牙
技术成熟度	成熟	成熟	开发中

	IEEE 802.11n	IEEE 802.11ac
典型业务	无线上网	无线上网、无线高清视频
标准进展	2011年发布	2013年发布
频段/GHz	2.4、5	5
调制技术	OFDM、BPSK、QPSK、16QAM、64QAM	OFDM、BPSK、QPSK、16QAM、64QAM，最高256QAM
信道频宽/MHz	20、40	20、40、80、160
MIMO	1～4路空间流	1～8路空间流
MU-MIMO	无	AP 与多个 STA 并发通信
FFT大小	64、128	64、128、256、512
PHY速率	最高600 Mbit/s	多STA并发时，总和速率可高达6.7 Gbit/s
波束成形	未标准化，可选	必选，标准化（显式）
邻居网络干扰减轻	较弱	波束成形

	HomePlug	ITU-T G.hn
标准组织	被IEEE采纳为P1901	ITU主推
工作介质	电力线	同轴、电力线、电话线
频段/MHz	2～30、2～50	2～25、50、100
调制技术	OFDM	OFDM
MIMO	暂无	2路
FFT大小	256和512	2 048
FEC	Turbo码和LDPC	LDPC
复用技术	CSMA+TDMA，厂商未实现TDMA	TDMA+CSMA，有利于QoS保障
物理层速率	200Mbit/s、500Mbit/s	250Mbit/s、500Mbit/s、1 Gbit/s、1.7 Gbit/s（MIMO）
邻居网络干扰减轻	较弱	功率控制，信号正交

测试项	ZigBee（Marvell）	Z-Wave（Sigma）	说明
发射功率	-8～9.5dBm	-22～0 dBm	Z-Wave功耗较低
灵敏度	-101 dBm	-97 dBm	测试结果接近
抗干扰能力	可有效抵抗ZigBee、Wi-Fi干扰；蓝牙对其干扰较严重	可有效抵抗CDMA信号干扰	Z-Wave抗干扰能力较强
穿透性	横向：3 dBm+天线可穿两堵墙；纵向：0 dBm可穿两层楼板	横向：0 dBm可穿两堵墙；纵向：0 dBm可穿4层楼板	Z-Wave穿透性更优
通信距离	距离：87.6 m，功率：-7 dBm；距离：102.2 m，功率：-5 dBm	距离：87.6 m，功率：-10 dBm；距离：102.2 m，功率：-8 dBm	ZigBee传输距离更远

1	敖志刚 . 智能家庭网络及其控制技术．北京：人民邮电出版社， 2011
2	Recommendation ITU-T G.9960. Unified High-Speed Wire-Line Based Home Networking Transceivers-System Architecture and Physical Layer Specification, 2011
3	IEEE Standard P1901. IEEE Standard for Broadband over Power Line Networks: Medium Access Control and Physical Layer Specifications, 2010
4	IEEE Standard 1905.1. IEEE Standard for a Convergent Digital Home Network for Heterogeneous Technologies, 2013

Study and Application of Multi-Terminal Interconnection Technology to Build Smart Home Network

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