Wireless broadband: the best choice for home network technology
Broadband has always been the main network technology for enterprises and large institutions, and now it has entered the general household, rapidly changing the way consumers use home computers. Including T1 lines, frame relay or ATM technology, new technologies bring more powerful functions to enterprise users, and provide extremely high connection rates, enabling fast network downloads or rich interactive services Realized; but with the popularization of high-speed transmission technologies such as digital subscriber loops or cable modems, broadband connection has quickly become a service that all families can enjoy.
The broadband market is experiencing explosive growth, and home users want to enjoy the same fast download time and interactive content as the office. If all broadband technologies are included, the total number of subscribers in 1999 was about 3.8 million. Industrial analysis company In-Stat also predicted that this market will grow at a high speed. It is estimated that by 2005, there will be 84 million broadband users worldwide.
High-speed Internet access is the main motivation for new users to apply for broadband lines, and other newly-developed application systems will also drive the demand for broadband connections and make the broadband technology market grow rapidly. These applications include streaming media services, video conferencing, Internet telephony, and e-commerce. Webcast and online games.
As a complete solution provider of cable modems and digital subscriber loop application systems, TI strives to meet the huge consumer demand for advanced broadband services; in 2000 alone, the company sold approximately 3 million sets of cable modem chips (30% of market sales), and provide technology to more than 11 million digital subscriber circuit products (30% of market sales). TI provides complete broadband technology and components, including hardware, software and system level knowledge and experience, so that engineers can quickly make low-cost advanced solutions when developing local or client application systems.
TI and other industry leaders are turning their focus to home networking technology, hoping to make end-user broadband connections a truly integrated and powerful home technology. Through digital subscriber loops and cable modems, the broadband connection can send information to the home at a very high rate; at the end of the broadband connection, which is the user's home, the manufacturer must also provide advanced home network technology to allow the user to Share information with computers, peripherals, and smart appliances in your home in a powerful and simple way.
The home network can bring many obvious benefits to users, such as communicating with each other through e-mail, sharing files or printers, and allowing multiple computers in the home to use the same Internet connection; in addition, the home network can also support multiple powerful Network audio and video applications. Simply put, the home network can bring high-speed lines to many computers and other devices at home, greatly improving the experience and experience of using broadband.
Due to consumer demand for home networks, home network technology has become an important development technology. In the past, consumers could only choose a wired Ethernet network, and then installed a lot of cables at home, which caused many consumers trouble; and there are currently two methods to solve the requirement of not having to install any new cables:
1. Use existing lines in your home
2. Use wireless network technology
The use of existing lines has been the practice for the past few years. HomePNATM is the main standard for home phone networks. It will directly use the home phone line; but this standard can only bring business opportunities to the United States because most of the world ’s households There is only one telephone socket. In addition, this solution does not take into account the needs of the enterprise, so users cannot use the same set of technology at home and office. Affected by these factors and other considerations, although the home networking market grew by 97% between 1999 and 2000, the HomePNA standard actually lost 28% of the market.
The HomePlugTM standard also uses existing lines, but only uses the power lines in the home to transmit data; although this technology can also be used outside the United States, it uses the line in the same way as HomePNA and the original design intent of the line It is different, so whether this standard can overcome the doubts of users, I am afraid it will take some time to prove. In addition, HomePlug can not meet the needs of enterprise applications, so that its market growth potential is severely limited, which is exactly the same problem as HomePNA.
Consumers have long been accustomed to wireless remote control operations, wireless phones, and other "wireless" home products. In addition, wireless technology is inherently flexible and mobile, so it is particularly attractive to consumers. HomeRFTM and IEEE 802.11b (also known as Wi-FiTM) are the two wireless technologies most valued by the market, and Wi-Fi has a better architecture and implementation technology, so market acceptance is increasing rapidly. When wireless technology first appeared, HomeRF was actually in a good position in terms of product cost and industry support, but these advantages are currently being rapidly lost, because the price of Wi-Fi products has fallen, and many manufacturers that originally supported HomeRF have begun to switch to Wi-Fi. Fi camp, Intel is an example. Enterprise application systems will choose Wi-Fi as their wireless technology, and bring this technology to the average family.
Wi-Fi-Improve industry momentum
Currently, more than 80 manufacturers support the "Wireless Ethernet Compatibility Alliance" (WECA), which provides Wi-Fi product compatibility certification and promotes Wi-Fi to become a global standard for wireless local area networks in various fields. In addition, there are currently nearly 100 Wi-Fi certified products from 38 companies officially launched, mainly supporting various applications in the corporate environment.
Including Microsoft and Starbucks, many large companies have chosen Wi-Fi as their wireless network technology. For example, Microsoft has set up a Wi-Fi network at its corporate headquarters in Washington, USA, and Starbucks has more than 300 stores. Provide Wi-Fi network services, allowing customers to wirelessly access the Internet anywhere in the store. In addition, major airports around the world have begun to build Wi-Fi network systems, allowing passengers to surf the Internet wirelessly, send and receive e-mail, or execute other network applications.
TI: Develop more powerful Wi-Fi technology
To meet the market demand for highly efficient and highly integrated Wi-Fi consumer products, TI is developing a wireless local area network solution to assist more homes and offices to adopt Wi-Fi technology. Compared with other solutions, TI's new chip can increase the coverage area of ​​the wireless LAN in the actual environment by 70%, that is, increase the effective online distance by 30%; the increase in online distance and coverage area is very important for the home user market because of consumption Users only need to purchase an access point device or gateway to access the Internet at any place in the home, which is not the same as most current wireless LAN products.
In addition to a built-in "Media Access Controller" (MAC) and baseband processor, the new chip ACX100 also provides PCI, mini-PCI, PC card and USB interfaces, without the need to use external bridge parts; In addition, It also supports the CCK modulation technology mandated by the IEEE 802.11b standard and the optional PBCCTM mode.
Compared with other 802.11b solutions that currently only support CCK modulation, as long as the end-to-end solution uses TI's ACX100 chip, it can obtain an additional 3 dB of coding gain through PBCC modulation technology, thereby allowing the signal coverage area Increase by 70%.
To further meet the needs of enterprises, ACX100 is not only fully compatible with existing equipment, but also provides an additional high-speed transmission mode of 22 Mbps; as one of the standard functions built into the chip, this rate is double that of 802.11b support 11 Mbps .
To meet the needs of voice and video applications, the 802.11b standard is still evolving. For example, 802.11e and 802.11i define more powerful service quality and security standards, and TI is committed to developing the next generation of products to support these new requirements.
in conclusion
Broadband applications are becoming more and more popular, and home users are more eager for the performance of broadband connections. If consumers want to build a resource sharing environment at home, in addition to the high transmission capacity of broadband lines, wireless networks will also be a powerful set Matching technology. Wi-Fi has been widely supported by corporate users and is expected to become the main choice for home networks soon.
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