Existing methods for using wireless networks

1. Wireless Wide Area Network

The WWAN skill allows you to establish a wireless network connection through a long-distance public network or a dedicated network. A number of antenna base stations or star systems protected by wireless service providers enable connection to search for vast regional cities. For example, many regions or cities.

2. Wireless Chengcheng Network

WMAN skills allow users to create wireless connections (for example. between a city and a university school), rather than spending high-spirited laying of optical cables, cables, and rental lines.

In addition, if the primary lease line of the wired network is unavailable. WMAN can be used as a standby network for wired networks. WMAN can use both radio waves and infrared rays to transmit data.

3. Wireless Local Network

WLAN skills allow users to create wireless connections locally (for example. In a company or school building, or in a public place, such as an airport ). WLAN can be used in a place with temporary studio or other cable installations limited. It may be used to enhance the existing LAN, and the user may not ask the local L in the work building together.

WLAN can run in two different ways. In the root WLAN, wireless stations (devices with radio wave network cards or external modem devices) are connected to wireless access points. wireless access points are connected to the wireless station and the network hub to ask about the bridge effect.

4. Wireless Bluetooth Network

WPAN skills allows users to create special wireless communications for devices (such as PDAs, mobile phones, and self-built computers) used for POS operations. POS is the interval within the I Om around you.

Currently, two primary WPAN skills are Bluetooth and infrared. Bluetooth is a forest generation skill. Data can be transmitted using radio waves within 30 feet, and Bluetooth data can be transmitted through walls, pockets, and briefcases.

Bluetooth skills are developed by the Bluetooth Special Interest Group (SIG. The Group released the bluetooth standard for version 999 in April 1.0. However, to connect the device within the distance (I meters), the user can also create an infrared connection.

Intel, the leader in Bluetooth, has abandoned this skill. The future of Bluetooth is still hard to say. At this stage, the neighborhood network in his own district is still the most infrared skill.

Because the high frequency radio waves used by wireless networks can penetrate the wall or glass windows, network devices can be placed on any disk within the useful range. In addition, the multi-layer security protection measures can ensure the user's privacy. when changing the network structure or planning, you do not need to discuss network settings from the beginning.