Explain the trend of several future broadband access technologies

The trend of several future broadband access technologies is explained, and the comparison of Future Broadband Access Technologies has been ongoing. Today, we will introduce the basic status, password settings, and IP address settings of the vswitch. For the future broadband access technology, please refer to the relevant documentation.

In January, the 802.11 Working Group successfully approved version 1.10 of the 802.11n draft in London, ending four disputes and constant questioning situations caused by Version 1.0, an important step towards the practical path of the 802.11n standard. Although many manufacturers invest a lot of manpower, material resources, and financial resources.

The intention is to compete for the new growth point of this network first, but there are many factors that determine whether a technology can be industrialized and whether it can bring predetermined benefits to the enterprise, the advancement and practicability of technology, the entry point of practical technical input, the strong support of manufacturers, and the wide acceptance of end users can be said that problems will occur if the technology is missing.

In any case, the launch of the formal IEEE 802.11n standard is absolutely exclusive and encouraging, as it will further promote the entry of wireless network technology into the user market, in the future, it will no longer be difficult for broadband access technology to occupy a larger share, but due to severe restrictions on media and security.

To compete for the market at the transmission layer, 802.11n still seems powerless. wireless network technology still needs to be further developed and improved. We should take the development and application of ATM technology as a precursor to change the confidence of our manufacturers, but operators and users are hard to recognize the embarrassing situation of "embarrassing big use.

For this reason, the author compares 802.11n with three seemingly unrelated hot network technologies (FMC and FTTC) that overlap with each other in some application fields, this gives you a better understanding of 802.11n wireless network technology with an "Upgrade.

Each of the three technologies has its own strengths.

802.11n is a new wireless network technology standard developed by the IEEE 802.11 Working Group to replace 802.11g. The latest version 1.10 has made up to 1.0 changes to the original version 12 thousand, based on the GHz and 5 GHz frequencies, this technology relies on MIMOMulti-In, Multi-Out: Multi-Channel input, Multi-channel output) and OFDM (Orthogonal Frequency Division Multiplexing: the strong support of orthogonal frequency division multiplexing technology greatly promotes the availability and reliability of wireless technology.

The 1.10 moderator has the advantage of greatly improving the speed, coverage, and reliability of the wireless network, and is well compatible with 802.11a/B/g products. Wireless devices using 802.11n Technology Increase the rate from the highest 54M rate available in the current wireless network to over 600 M, or even up to M; increase the coverage of several hundred meters that 802.11g technology can provide by about 10 times.

It can reach a distance of several kilometers. At the same time, the smart antenna technology can ensure that users can receive stable signals and reduce the interference of other noise signals to further improve the reliability of data transmission. Major Disadvantages: currently, only the draft version of 802.11n is not in the official version; security has not been greatly improved.

FMC fixed business and mobile business integration) is one of the future development trends of the communications industry, its connotation is very extensive, summary mainly includes network, business and operation integration, at present, the relevant research and applications are still in the initial stage. Most operators can only provide basic service bundling services, but some operators have already demonstrated the real application concepts of FMC.

BT, for example, has introduced a new type of mobile phone Bluephone that can call cheap phones through a fixed network. It is a common mobile phone when a user is in the mobile status outside; when a user is at home or in the office, through the Future Broadband Access Technology in the room, it can seamlessly transfer calls to a fixed broadband network from Huawei's "FMC Status Quo and Development Trends ").

Competition between 802.11n and FMC is greater than cooperation

There seems to be no overlap between 802.11n and FMC, but the problem lies in the integration concept of the future broadband access technology included in FMC. I introduced FMC with a Bluephone example to increase the reader's perceptual knowledge of this technology. Bluephone is actually a typical example of broadband access technology convergence in the future, we also use this example to analyze why the competition between 802.11n and FMC is greater than cooperation.

No worries, Bluephone makes good use of the current new technologies and new ideas to provide users with more convenient and more affordable network application methods, but when the official version of 802.11n products appears, these conveniences and benefits seem powerless. First, the 802.11n product itself supports VOIP technology and a bandwidth of up to Mbps. It provides users with a "one piece of cake" call function, and can even help users fully implement the "Digital Home" concept.

Next, the most attractive part of Broadband Access Technology Integration in the future is that users can enjoy a cheaper and more favorable fixed broadband network voice service after entering the room from outside during the call, however, the coverage of 802.11n products is several kilometers away. That is to say, users can enjoy a cheaper and more favorable fixed bandwidth voice service as long as they do not go far. It is self-evident who can save money for users.

Of course, when discussing the above example, this article is based on the premise that the use of mobile network-based call fees is higher than that of fixed broadband networks. If at a certain time in the future, if this relationship is reversed, it is worth discussing whether the value of FMC still exists.

Cooperation between 802.11n and FTTC is greater than competition

I have personally experienced one of the following scenarios: One day, I paid the broadband usage fee in the Netcom business hall near my place of residence. A man next to me is asking about future broadband access technology for my family, his residential area is located on the edge of the city. near a large train scheduling station, it is about five kilometers away from the nearest telephone exchange bureau, and the telephone lines are aging.

It is very difficult for the Train Dispatching Station to break the earth and the line cannot be modified in a short period of time. The Netcom waiter explicitly told him that he could not install broadband for him. He was advised to consult the radio and television station, however, this gentleman said that their community basically uses Broadband Access Technology for radio and television networks in the future. Due to a large number of users, the network speed is not slow or the network speed is not high. It can be seen that, this gentleman is very disappointed and helpless.

As a technical engineer who has been engaged in the IT industry for many years, I am also wondering if there are any good solutions to solve the above problems. In the current situation, I purchased 802.11g products to achieve wireless networking without losing sight of being a solution, however, the coverage of 802.11g products is limited, and many devices are required to complete the networking. The cost of accessing the Internet is too high.

Obviously, the emergence of 802.11n products can better solve this problem, but is the wired networking technology that uses optical fiber as the representative media in the network convergence layer giving way to 802.11n wireless networking technology? I think this situation is very difficult, because the convergence layer 802.11n is more suitable for backup and auxiliary means, mainly based on the following two reasons:

First of all, although the wireless technology represented by 802.11n has greatly improved the speed and coverage, it cannot be ignored that the transmission media it relies on has unstable characteristics, compared with optical fiber cables, air is too vulnerable to weather conditions. in bad weather, the speed and reliability of wireless networks are hard to be completely guaranteed. In today's increasingly fierce competition in the market.

Operators are reluctant to receive complaints and complaints from users due to technical reasons. Second, optical fiber has good security, but air is a completely open medium, the security of wireless network technology has always been an important factor restricting its development. 802.11n cannot be avoided.