Retro: infrared wireless Internet access

There are a variety of wireless Internet access methods. We often see wireless network interfaces and wireless network interfaces for wireless Internet access. For today's wireless trends, the wireless access of infrared seems a little retro. It cannot be said that it has been out of the stage, at least in terms of choice, it has gradually been forgotten by everyone. Next we will introduce a wireless Internet access solution through infrared rays. This method is based on GPRS traffic to access the Internet.

Infrared wireless Internet access solution

This is a wireless Internet access by using mobile phones that support China Mobile's GPRS General Packet Radio Service and universal grouping wireless Service. Because the GPRS terminal is also relatively cheap and the charges are reasonable, it should be said that using GPRS to access the Internet is a more practical method. Currently, the actual Internet Access Effect of GPRS is similar to that of 56 Kbps Modem. The actual traffic Calculation of GPRS is generally 0.03 RMB/1 kb or 0.01 RMB/1 kb, and there is an unlimited traffic package of 200 RMB/month. GPRS does not calculate provincial roaming charges. This provides a possibility for users who want to stay online at any time. Because of the wide coverage of China Mobile's network, GPRS signals are available in all regions with China Mobile's signal, this ensures that users can access the Internet Anywhere. To enable the laptop to access the Internet through GPRS, there must be a corresponding GPRS terminal or module. Currently, there are mainly the following methods of GPRS terminal:

1. built-in GPRS module in the notebook. Using such a GPRS module notebook, you can directly access the Internet without using a GPRS mobile phone. For example, WinBook M9600, Fang Zhengyi, S2000, and TCL 7000G, but not all laptops are built in. Moreover, the built-in GPRS modules are expensive, so this wireless Internet access method is not common.

2. the GPRS Modem of the pcmcia card or the CF card. You only need to insert the SIM card into the corresponding SIM slot of the GPRS Modem, and install the driver and Dialup program, then you can dial up the Internet like a common Modem. However, the prices for such cards are relatively high, usually at more than 1000 yuan.

3. GPRS mobile phone. It is connected to a laptop for infrared wireless Internet access. That is, the mobile phone with GPRS is used as an external Modem to establish a GPRS dial-up connection. Currently, GPRS mobile phones that can provide wireless laptop Internet access mainly include Ericsson's T39, T68, T316, Sony Ericsson's T68IE, T618, T628, and feilepu's 820, the 3rd method is currently the most widely used wireless Internet access method, which is also the solution to be introduced in this article. In this solution, the following two conditions must be met:

The infrared reception and transmission functions of the notebook and mobile phone are normal. If the notebook's infrared interface is damaged, you can also purchase the comport infrared converter or USB port infrared converter, which is about-yuan. This method is also applicable to desktops, the desktop can also access the Internet wirelessly through an infrared GPRS mobile phone. The mobile phone used supports GPRS and activates the GPRS mobile Internet service in the corresponding telecommunications department.

This solution is the most cost-effective, because at present, laptops and mobile phones are equipped with infrared interfaces, and mobile phones supporting GPRS are also very common, so no additional hardware is required, you only need to direct the phone's infrared port to the laptop's infrared port to achieve infrared wireless Internet access. This infrared wireless Internet access solution has the following features:

1 ). low communication rate: The maximum bandwidth is 115.2 Kbps, but in fact only 20 or 30 Kbps). The connection speed is slightly lower than that of the 56 K Modem in the narrow band. Therefore, it can only be used for simple Internet applications, such as QQ chat, email sending and receiving, and simple web browsing.

2) The communication distance is short and the application is limited. This wireless transmission distance is less than 1 meter, and there are also restrictions on directionality, that is, only the infrared interfaces of mobile phones and laptops can be aligned with each other at a general interval of about 50cm ), normal communication is possible only when there is no large deviation.

3). High security. Because at the same time, it only allows two devices to connect, and the connection distance is very short, there cannot be a large deviation between the two infrared windows, therefore, others cannot secretly copy the data on your laptop.

The wireless Internet access solution of the GPRS mobile phone laptop is a bit like the built-in Modem installation. First, install the infrared interface driver and use the virtual COM to map to the infrared interface for dialing, of course, it does not directly dial through a Wired phone number line, but through a mobile phone. Take Windows XP as an example ):

Step 2: first install the infrared interface driver. If the driver is already installed, save the trouble ). If the BIOS configuration of the laptop has the option of configuring the infrared interface, you must first enable the infrared function. For example, in the notebook used by the author, press the F2 key during boot to enter the BIOS setup program, select the Infrares Port infrared Port under the System Devices menu) option, the options include Disabled, Enabled, and Auto. You can select either "Enabled" or "Auto. Press the F10 key to save the Setting Value and end the setting program. After the system is restarted, the system will find a new infrared port, install the driver, and then pop up the wizard dialog box for adding new hardware, to add a new modem, it is actually a virtual modem ).

Step 2: In the Add new hardware wizard, click the next button as prompted, and select the last add new hardware device option in the list box.

Step 2: click "Next" and select "install hardware advanced I manually selected from the list" in the displayed dialog box. Click "Next" and select the "modem" option in the displayed dialog box.

Step 2: click "Next" and select "do not detect my modem" in the displayed dialog box. I will select "repeat" from the list.

Step 2: click "Next" and select the "Standard modem" option in the "vendor" column in the pop-up dialog box. Then select the "Standard 11400bps modem" option, because the theoretical rate of infrared wireless Internet access can usually reach 115.2 kbps, of course, if your mobile phone supports a low speed, you can also select the 9600bps modem option.

Step 2: click the "Next" button to bring up a dialog box that requires you to select a connection Comport and select an unused comport. Generally, this is a virtual comport recognized by yourself ). Then, follow the prompts and click "Next" to complete the installation of the virtual modem.

Step 2: click the "Create a new connection" link in the "Network task" column of the "Network Connection" dialog box, in the New Connection Wizard, follow the prompts to create a new dial-up connection. The selected dial-up device is the virtual modem installed above.

Step 2: Double-click "infrared" on the "control panel" and select "enable infrared communication" in the "options" column to open the infrared port of the laptop; at the same time, you need to set the phone to open the phone's infrared port, different phone settings are the same ).

Step 2: Keep the phone's infrared port in front of the laptop's infrared window, which is usually no more than 9th away.) After the phone is aligned, the laptop will prompt you to find an infrared emission device, that is, the mobile phone ). Double-click the previously created dial-up connection, enter the dial-up number * 99 #, and enter the user account and password. After successful dialing, the mobile phone screen displays the received and sent data, confirming that the mobile phone is conducting data communication.

The above steps enable Wireless Internet access for GPRS mobile phone laptops. Using this method to access the Internet, the actual maximum network connection speed is still affected by the surrounding environment, which is slower than that of common Modem. However, it is still a good choice for a number without broadband conditions or telephone lines.