Wireless Internet

1. What is unlimited Internet

It should be wireless Internet

Wireless Internet is an Internet based on wireless networks.

Wireless network is a network without hard lines provided by China Mobile, China Unicom, China Telecom, and China Netcom. China's current wireless networks include: China Mobile's GSM network, China Unicom's GSM network and CDMA network, China Telecom's PHS network, and China Netcom's PHS network.

Wireless Internet is composed of mobile wireless networks and realizes the two-way transmission of mobile phone data on the network.

This must ensure that data is transmitted in both directions rather than in one direction. Otherwise, it is just a one-way data network, and the network structure is a hub-type network. In fact, the SMS service of mobile phones is the basic data exchange form of wireless Internet, and it also conforms to two-way data transmission.

The current Monternet and China Unicom Online are actually several portal sites of the wireless Internet. It is not enough to support the concept of wireless Internet.

At present, some SPs claim to be wireless Internet, which is an act of stealing the concept. In fact, data cannot be exchanged directly between SPs, so why talk about wireless Internet? In October 2004, several Internet portals came out and announced the establishment of the Wireless Internet Alliance. In fact, it was to express their position and explain that they must regulate their operations to avoid being disconnected by operators, unable to provide services, and unable to charge information fees. It is not at all intended to promote the development of wireless Internet in China. In this regard, people in the world are easily disturbed by phenomena and cannot form correct concepts.

Only by confirming the concept can the development of the wireless Internet industry be promoted. Clarifying the concept and clarifying several elements of the concept can effectively promote our thinking on how to develop wireless Internet, how to create business opportunities and occupy a place in the development process of wireless Internet.

2. What is wireless Internet

Definition of wireless Internet

Wireless Internet is an Internet based on wireless networks. That is, Internet services that use electromagnetic waves for data transmission.

Wireless network is a network without hard lines provided by China Mobile, China Unicom, China Telecom, and China Netcom. China's current wireless networks include: China Mobile's GSM network, China Unicom's GSM network and CDMA network, China Telecom's PHS network, and China Netcom's PHS network.

Wireless Internet is composed of mobile wireless networks and realizes the two-way transmission of mobile phone data on the network.

This must ensure that the data is transmitted in both directions rather than in one direction. Otherwise, it is just a one-way data network, and the network structure is a hub-type network. In fact, the SMS service of mobile phones is the basic data exchange form of wireless Internet, and it also conforms to two-way data transmission.

The picture shows a common wireless Internet card.

The foundation of wireless Internet

1. Network foundation

The network foundation of wireless Internet in China is the best in the world. Currently, there is China Mobile GSM network. China Unicom's GSM network and CDMA network, China Telecom and China Netcom's PHS network.

The network has covered the whole country. Except for particularly remote areas, network services can basically be guaranteed to be available throughout China.

At present, the GPRS data communication service launched by China Mobile on the G network has a bandwidth of about 3k for end users, which can guarantee China Mobile WAP service.

China Unicom's data communication services in the CDMA network are better, and the bandwidth can reach 32k for end users. WAP service can basically be guaranteed.

The PHS network can provide data bandwidth of about 150k. It can reach 32k by the terminal.

2. Domain Name Resolution Service

At present, mobile operators have issued 330 million numbers, which basically provide users with an 8-11 digit number for identification.

None of these mobile IP addresses have corresponding domain names. China Information Industry Network and Wuhan Chengxitong Information Technology Co., Ltd. have successfully developed the world's first wireless domain name resolution service system, which can provide wireless domain name resolution services.

The main methods of wireless Internet access in China

One is the wireless network of China Mobile and China Unicom. You can use China Mobile's GPRS or China Unicom's CDMA wireless network to access the Internet. You can purchase PCMCIA to access the Internet. Card and laptop or mobile phone and laptop via GRPS or CDMA to access the Internet.

The other is to access the Internet through wireless AP. This is affected by the transmission range of the wireless AP and has certain limitations, but it also gets rid of the constraints of network cables.

The current Monternet and China Unicom Online are actually several portal sites of the wireless Internet. It is not enough to support the concept of wireless Internet. At present, some SPs claim to be wireless Internet, which is an act of stealing the concept. In fact, data cannot be exchanged directly between SPs, so why talk about wireless Internet? In October 2004, several Internet portals came out and announced the establishment of the Wireless Internet Alliance. In fact, it was to express their position and explain that they must regulate their operations to avoid being disconnected by operators, unable to provide services, and unable to charge information fees. It is not at all intended to promote the development of China's wireless Internet. In this regard, people in the world are easily disturbed by phenomena and cannot form correct concepts.

3. What does wireless Internet on mobile phones mean?

Mobile wireless Internet is an Internet based on wireless networks.

Wireless network is a network without hard lines provided by China Mobile, China Unicom, China Telecom, and China Netcom. China's current wireless networks include: China Mobile's GSM network, China Unicom's GSM network and CDMA network, China Telecom's PHS network, and China Netcom's PHS network.

Wireless Internet is composed of mobile wireless networks and realizes the two-way transmission of mobile phone data on the network. This must ensure that data is transmitted in both directions rather than in one direction.

Otherwise, it is just a one-way data network, and the network structure is a hub-type network. In fact, the SMS service of mobile phones is the basic data exchange form of wireless Internet, and it also conforms to two-way data transmission.

The current Monternet and China Unicom Online are actually several portal sites of the wireless Internet. It is not enough to support the concept of wireless Internet.

At present, some SPs claim to be wireless Internet, which is an act of stealing the concept. In fact, data cannot be exchanged directly between SPs, so why talk about wireless Internet? In October 2004, several Internet portals came out and announced the establishment of the Wireless Internet Alliance. In fact, it was to express their position and explain that they must regulate their operations to avoid being disconnected by operators, unable to provide services, and unable to charge information fees.

It is not at all intended to promote the development of China's wireless Internet. In this regard, people in the world are easily disturbed by phenomena and cannot form correct concepts.

4. What does wireless Internet on mobile phones mean?

Mobile wireless Internet is an Internet based on wireless networks.

Wireless network is a network without hard lines provided by China Mobile, China Unicom, China Telecom, and China Netcom. China's current wireless networks include: China Mobile's GSM network, China Unicom's GSM network and CDMA network, China Telecom's PHS network, and China Netcom's PHS network.

Wireless Internet is composed of mobile wireless networks and realizes the two-way transmission of mobile phone data on the network.

This must ensure that the data is transmitted in both directions rather than in one direction. Otherwise, it is just a one-way data network, and the network structure is a hub-type network. In fact, the SMS service of mobile phones is the basic data exchange form of wireless Internet, and it also conforms to two-way data transmission.

The current Monternet and China Unicom Online are actually several portal sites of the wireless Internet. It is not enough to support the concept of wireless Internet.

At present, some SPs claim to be wireless Internet, which is an act of stealing the concept. In fact, data cannot be exchanged directly between SPs, so why talk about wireless Internet? In October 2004, several Internet portals came out and announced the establishment of the Wireless Internet Alliance. In fact, it was to express their position and explain that they must regulate their operations to avoid being disconnected by operators, unable to provide services, and unable to charge information fees. It is not at all intended to promote the development of China's wireless Internet.

In this regard, people in the world are easily disturbed by phenomena and cannot form correct concepts.

5. What kind of network is WIFI?

Wireless router Wi-Fi was originally the abbreviation of wireless fidelity. The full English name of Wi-Fi is wireless fidelity. In the category of wireless LAN, it refers to "Wireless compatibility certification" is essentially a commercial certification, and it is also a wireless networking technology. In the past, computers were connected through network cables, but now they are connected to the Internet through radio waves; the most common one is a wireless router, then Within the effective range of the radio wave coverage of this wireless router, WIFI connection can be used for networking. If the wireless router is connected to an ADSL line or other Internet lines, it is also called a "hotspot".

Most of the common wireless routers on the market now have 54M speed and 108M speed, and 300M speed Wi-Fi routers are gradually becoming more popular. The next generation Wi-Fi standard has been formulated with a maximum transmission rate of up to 6.7G.

Of course, this speed is not the speed of accessing the Internet. The speed of accessing the Internet mainly depends on the Internet line of the WIFI hotspot.

6. What are the modes of home wireless network?

"Wireless AP + Wireless Network Card" mode "Wireless AP + Wireless Network Card" mode is the most economical and practical among the three solutions I introduced today. type.

AP is the abbreviation of Access Point. Wireless AP is the access point and wireless gateway in wireless LAN. Its function is similar to the hub in wired network. When there is an AP in the network, the coverage range of the wireless network card will be doubled, and the network devices accommodated by the wireless LAN can also be increased.

The addition of wireless AP enriches the networking methods. Due to the development of technology, APs are no longer simply a bridge connecting "wired" and "wireless". AP products with various additional functions are emerging in an endless stream on the market, which provides a variety of home broadband access methods. Provided strong support.

Some wireless APs on the market now also have proxy server functions, using ADSL or Cable Modem connections to enjoy Internet access. Of course, the prices of these products are also a bit more expensive. For wireless LANs with AP access points, you need to configure the AP and its IP address first, and then set up the wireless LAN client to establish a connection with the wireless AP and add it to the corresponding AP network.

Wireless LANs with access points can also be connected to existing LANs through the Ethernet interface on the AP to achieve wireless and wired integration. Ad-Hoc (point-to-point) mode In the establishment of a home wireless LAN, I think everyone knows that the simplest thing is to implement wireless interconnection between two computers equipped with wireless network cards. One of the computers can connect to the Internet to enjoy the bandwidth.

As shown in the figure below, a wireless LAN based on Ad-Hoc structure is completed. Ad-Hoc structure is a peer-to-peer network structure that eliminates the need for wireless APs. Computers with wireless network cards installed can achieve wireless interconnection with each other. The principle is that a computer host in the network establishes a point-to-point connection. It is equivalent to a virtual AP, and other computers can directly connect and share the network through this point-to-point connection.

Due to the elimination of wireless AP, the network setup process of Ad-Hoc wireless LAN is very simple. However, the transmission distance of general wireless network cards in indoor environments is usually about 40m. When this effective transmission distance is exceeded, Communication between each other cannot be achieved; therefore, this mode is very suitable for some simple or even temporary wireless interconnection needs. In addition, if all computers in this solution are allowed to share the connection bandwidth, for example, if 4 machines share broadband at the same time, the available bandwidth of each machine is only 1/3 of the standard bandwidth.

"Wireless broadband router + wireless network card" mode "Wireless broadband router + wireless network card" mode is a wireless networking mode used by many families now; see the figure below. This mode of wireless network can be A wired + wireless broadband hybrid network. Although the wireless network is very free, sometimes the signal is not very good; at this time, the advantages of this mode of wired network emerge.

In addition, for users who use virtual dial-up software to access the Internet, they no longer need to use a computer as a gateway for virtual dial-up. Now they can access the Internet when they turn on the computer and can always be online. Compared with the above "wireless AP + wireless network card" mode, the investment cost of this mode is about 30% higher. If your economy allows, I recommend you to adopt this mode.

For new ADSL users, I suggest that before starting the installation, it is best to confirm whether the broadband service has been activated (you can call the ISP to find out. Here, I would like to remind everyone to keep the ISP's technical support phone number. You may need to use it frequently in the future), and then check whether the wireless broadband router, network cable, wireless network card and its driver CD are complete. Pay special attention to whether the crystal head of the network cable is pinched correctly.

If you are planning to upgrade on the previous wired network, then of course there is no need for the previous preparation work.