Comparison and summary of wireless Internet access methods for different laptop computers

Laptop has been widely used for many years. Now it is no longer a high-end product. How many wireless Internet access methods are available for laptop computers? Here, we will give you a brief description of what method is suitable for you.

Today, wireless Internet access has become a hot topic of IT technology as Intel's mobile computing technology has entered the market with great fanfare, here I will explain the two application modes of wireless Internet access. Wireless Internet access can be divided into remote wireless Internet access and wireless LAN. The two methods have their own merits.

Laptop wireless Internet access method 1

Remote wireless Internet access

Currently, China Mobile and China Unicom, China's two major mobile phone carriers, have launched their respective GPRS and CDMA 1X services, which are new technologies developed to expand the original GSM mobile network, the simple principle is to improve the audio pulse signal of the original GSM network so that it can transmit electromagnetic signals and increase the network bandwidth, we only need to insert a GPRS network adapter or CDMA 1X network adapter in the PC Card slot of the laptop, and complete relevant procedures in the mobile or Unicom business office, you can use the dial-up program on the card to wirelessly access the internet ｡

The entire installation and use process is as follows (taking GPRS as an example): purchase a GPRS wireless network adapter-obtain the secondary card of your mobile phone number in the business office (the same as your mobile phone number, but not on your mobile phone, it is just used as an identity recognition tool for wireless Internet access. --- mount the secondary card to the wireless network adapter --- install the driver --- connect the network using the corresponding dial-up program --- open the browser and start accessing the Internet ｡

Advantage: as long as the mobile phone has a signal (of course, the local mobile phone operator must activate the GPRS Service), you can access the Internet and truly connect to the world anytime, anywhere, it is indeed convenient, so you don't have to worry about getting network information in time ｡

Disadvantages: the speed is slow, the price is relatively expensive, and the network stability is poor. Slow speed is inevitable. For wireless signal transmission based on mobile base stations, its transmission peak value is itself a bottleneck, now, with wireless Internet access via mobile phones, the maximum speed is only 50 Kbps. That is to say, it is basically slower than using MODEM telephone lines to dial up numbers. the expensive price is even more of a nightmare. I was afraid of it when someone used it some time ago, I don't know where the mobile phone fees come from, and because the speed is too slow, I didn't do much, but the money has been flushed into the pockets of wireless operators, now the price of GPRS has been adjusted to the latest, with a fee of 3 points per Kb. Let's calculate: that is to say, every MB of data requires about 30 yuan, which is analyzed based on general usage, an email containing no attachments is about 100 kb. If there are attachments, in the case of such a well-developed email system, 1 Mbit/s attachments are very common and follow the limit of 56 kbps, it takes about 40 minutes to 1 hour to download 1 MB of content, that is, nearly 30 yuan per hour. This price is hard to make it popular, however, mobile recently launched a 180 RMB subscription service, but the overall quality still needs to be improved, because the price of 180 RMB is too large to compare with the bandwidth, at the same time, the problem of intermittent network transmission has been plaguing many users ｡

Comment: China's mobile phone operators are still in a non-competitive market, and prices and services are always unsatisfactory. Convenience is indeed convenient, if you have enough pockets to make sure you want to access the Internet anytime, anywhere (the premise is that the Internet traffic is not large), you can consider this wireless Internet access method ｡

Laptop wireless Internet access method 2

Wireless LAN

Currently, wireless LAN has developed 802.11B and 802.11A, followed by 802.11 Gbit/s. There are already mature products sold in the market, including 802.11B and 802.11A, the transmission speed of 802.11B is 11 Mb/s, while that of 802.11A-based products can reach 56 Mb/s, this is close to the speed of the wired LAN. Due to the price, we are already using the technology used by the chindez notebook or the wireless network card that can be purchased on the market, most of them are 802.11B protocols ｡

It is very easy to set up a wireless LAN domain. Buy a wireless transceiver (AP) and connect it to a wired LAN using a common network cable, this wireless transceiver will connect all computers with wireless NICs in a certain range to the switches of the wired LAN. The network setting method is the same as that of the wired network. The only difference is that, your computer will show that you are connecting to the network (in the taskbar in the lower right corner) through a certain wireless device, and you can freely move around with your notebook within a certain range, any Internet access within the coverage of the signal

The signal coverage of an AP is about 300-meters. In the field environment, if it is an open environment (that is, there are not many wall blocking signals), more than meters can receive signals, even better, an AP can connect 10-30 users to the Internet over wireless at the same time based on different models ｡

What's even worse is the cost. The price factor is indispensable for the rapid development of the wireless LAN. Let's compare the cost with that of the wired network, to allow 20 laptop users to access the Internet at the same time in an office area, they need to purchase 24 replacement machines, And the wiring cost is not low. If the company moves the site, the entire Integrated Wiring System will be deprecated, in the new office space, you need to re-invest in cabling. Wireless LAN is not the same, and no cabling is required. You only need to place an AP in the office area and connect it to the switch of the data center through the network line, in this AP region,-meters, everyone can access the Internet quickly and wirelessly. The speed of 11 m is acceptable to most companies or individuals. The price of an AP ranges from to Yuan on the market, even home users can easily set up the AP and move it around when the company or home is relocated. The relocation cost is basically zero, at the same time, all users who use laptops to access the Internet can freely move around in the office area. If you have many users and a large area, installing several more aps will perfectly solve this problem, in addition, the signals between APS do not interfere with each other. This advantage comparison is too obvious. It also shows that similar products have huge market potential, it is no wonder that Intel will make every effort to promote the Mobile Computing Technology of "China". (Note: laptops using the mobile computing technology of "China" are equipped with wireless Internet access capabilities, no need to purchase a wireless network card )｡

Some may ask: Wireless LAN relies on wired networks. Why can't I go online when I leave the room? In fact, you can also enjoy the convenience, high speed, and low price of Wireless LAN when you go out, wireless Internet access is installed in large commercial buildings, high-end office buildings, airports, hotels, coffee shops, and even some McDonald's and KFC in large cities. In these places, you can use laptops for high-speed wireless Internet access, china Telecom and China Netcom have also joined the laying of Wireless AP access points, which we can call as "hot spots". China Telecom and China Netcom have laid a large number of Public Wireless AP access points in the above areas, then, you can use the password verification program to access these public APS when accessing the Internet. China Telecom launches the "tianyone" service, while China Netcom launches the "wireless companion" service, wireless Internet access is available in all parts of the country. With the popularity of wireless networks, "hot spots" will naturally become more and more, so we can easily access high-speed wireless Internet.

If you see this icon in a certain place, it means that wireless Internet access is possible, the best way is to open your notebook and check whether the network shows a signal ｡

Comment: low price, convenience, and high speed have become rocket driving force for the development of wireless LAN. With the addition of public wireless access points by telecom operators, wireless LAN has gradually broken through the concept of "Lan, although the development time is not long, gold is always going to shine. I believe that the wireless network technology of the basic 802.11 protocol will surely reach the peak of market demand: wireless LAN domains are naturally your best choice for users who have the ability to purchase "chindeos" laptops, you can also purchase a wireless LAN card with a PCMIC slot to enable wireless Internet access. The market price is )｡