Smart Home Industry: Internet home technology trends - the home network, terminal - smart home industry

HC intelligent home network  The field of digital home technology involved is very complex, including: networking, home gateway technology, equipment, auto-discovery technology, remote management technology. Information and communication technologies are changing the rapid development of the lives of people, information and digital is increasingly becoming a trend in all areas of society. Emerged the concept of the digital home, telecommunications, home appliances, IT and other industries have their own interpretation of the digital home. Speaking on the carriers, the digital home is the public network and information services to home gateway as the connection point extends to the family, and all kinds of information through the home network to connect the terminal to provide families with integrated communications, entertainment, appliance control, security prevention, home management and information services functions. The field of digital home technology involved is very complex, including: networking, home gateway technology, equipment, auto-discovery technology, remote management technology.

Networking Within the family home networking technology to solve a variety of physical interconnection between terminals. As the family environment, diversity and complexity of digital home networking technology has been a very active area of technology, along with business representatives to IPTV multimedia services and applications in the home of the popularity of the Internet technology in bandwidth performance, QoS guarantees and ease of use put forward higher requirements. Now common in digital home networking connectivity technologies include Ethernet, HomePNA, MoCA, PLC, WiFi and so on.

Ethernet technology network in the present world is a very popular connection technology, can provide from 10M to 100M or Gigabit transmission bandwidth. Ethernet 802.1p for QoS-based mechanism is relatively simple, with the meet by the home gateway of voice, video, data, multi-information flow QoS requirements. Ethernet connectivity in existing household equipment is the easiest and most popular, but because of the Ethernet cabling on the family have higher requirements, but do not have the mobility, so many applications are quite limited.

HomePNA is a family-based transmission line interconnect technology, through the twisted pair carrying data modulated signals on telephone line-based networking technology, HomePNA3.0 provides support for coaxial cable, was ITU in 2005 standardized to G.9954. The latest theory of the highest standard HomePNA3.1 rate up to 320Mbps, supports synchronous and asynchronous two MAC mechanisms, using simultaneous MAC get better QoS. Gotta run, HomePNA technology to the maximum possible reuse of existing wiring within the family system to provide equipment, Internet, greatly reducing the wiring transformation. HomePNA technology is adopted for AT & T as its home networking solutions for interconnection mechanism. But as a wired technology, in addition to the limitations of cable, but also some shortcomings: a large transmission delay, in the coaxial line with VDSL, digital television spectrum there is conflict.

MoCA and HomePNA is a similar technology, using coaxial cable as the transmission medium, to provide a theoretical maximum bandwidth of 270Mbps. MoCA's biggest problem is not yet standardized, very little support for its chip factory, which also led to high costs, lack of interoperability issues. All three wireline

relative, the family socket (HomePlug) Union-led PLC based on power line transmission technology is a more convenient layout interconnect technology. PLC Ethernet transmission mechanism similar to provide the physical bandwidth of 200Mbps, and specifically consider the AV high-bandwidth, low latency requirements of the current popularity of the main factors that affect the PLC are: power line interference, the user isolation, and cost.

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