WiFi is a wireless communication technology, also known as the IEEE 802.11b standard. Its biggest advantage is its high transmission speed, which can reach 11Mbit/s. In addition, the effective distance of WiFi technology wireless communication is also very long and can be compatible with various existing IEEE 802.11 direct sequence spread spectrum (DSSS) devices.
The WiFi module developed and produced by Ebyte is based on the IEEE 802.11 b/g/n/ax wireless network specification, and its maximum bandwidth can reach 11Mbit/s. In the case of weak signals or interference, the bandwidth can be automatically adjusted to 5.5Mbit/s, 2Mbit/s and 1Mbit/s, which effectively ensures the stability and reliability of the network.
Ebyte WiFi module has high-speed and reliable characteristics. The communication distance in open areas can reach 305m, and the communication distance in closed areas is 76~122m. In addition, this product can be easily integrated with existing wired Ethernet networks, thereby reducing networking costs. WiFi wireless network structure
WiFi wireless network structures mainly include two types: ad hoc type and infrastructure type. Among them, the "Adhoc" type is a peer-to-peer network structure. Each computer only needs to be connected to the corresponding wireless network card, or a portable terminal such as a mobile phone with a WiFi module to achieve mutual connection and resource sharing without the need for an intermediary "connector". Entry Point” (AP).
The "Infrastructure" type is an application model that integrates wired and wireless LAN architecture. The network structure is similar to the star structure in Ethernet, with wireless access points acting as intermediate bridges to share network resources. This application requires an access point. WiFi technical features
WiFi technology is a short-range wireless technology, similar to Bluetooth technology, and is widely used in office and home environments. The frequency band used by WiFi technology is near 2.4GHz, which is currently a wireless frequency band that does not require a license. Existing standards include IEEE 802.11a and IEEE 802.11b. Due to its unique advantages, WiFi technology is favored by governments and enterprises. The outstanding advantages of WiFi technology are as follows:
1) WiFi has a wide coverage area, which can reach about 300ft, while the radio wave coverage based on Bluetooth technology is only about 50ft. However, the new switch launched by Vivato can extend the WiFi communication distance to about 4 miles. This technological innovation will have a profound impact on wireless communication technology.
2) Although the data security performance of WiFi technology is slightly inferior to Bluetooth technology, its transmission speed is very fast, reaching 11Mbit/s, which can meet the information needs of individuals and society.
3) The threshold for entering the WiFi field is low. You only need to set up "hotspots" in densely populated places to achieve high-speed Internet access without the need for network cabling, thus saving a lot of costs. Application of WiFi technology
In the fierce competition in the communications industry, broadband access is the focus of competition among operators. Currently, major operators are beginning to build WiFi networks to provide users with broadband access services. Starting from existing resources and combining the advantages of WiFi technology, operators can significantly reduce investment costs and quickly seize the market. Although there are still some problems in a large number of commercially available products that support the IEEE 802.11b standard, such as security issues, roaming issues, and business models that currently can only support a single data service, etc., we focus on interoperability and future development. and profits. Everyone regards WiFi technology as an effective means to enhance the value of broadband, asymmetric digital subscriber line (ADSL), and LAN users and provide differentiated services. It is also a powerful supplement to 3G data services in the future. WiFi currently mainly targets individuals, families/enterprises and industry users, providing home/enterprise services and public area/exhibition area services. From the perspective of coverage area, it can be mainly applied to the following areas: areas where the cost of wired resources is too high or wiring is difficult; places where people move frequently such as hotels, airports, hospitals, teahouses, etc.; places where people gather such as campuses, offices, conference rooms, etc. Exhibition halls, stadiums, news centers and other places with high demand for information. The development of WiFi technology
Currently, the commercial use of WiFi technology faces many challenges. On the one hand, issues such as roaming, security and billing of WiFi technology have not yet been properly resolved; on the other hand, the lack of commercial users will result in lower investment returns in network construction, affecting the enthusiasm of telecom operators. Therefore, only the complementary use of various access methods can bring about economy, reliability and effectiveness. In specific areas and scopes, the combination of WiFi technology and 3G technology will have broad development prospects.