1. Background 2. The technological advancement of anti-interference Vivato's Wi-Fi base station and high-performance phased array smart antenna system allows Vivato base stations to form narrow radio wave beams electronically. Such beams can be accurately aimed and the waveform can be maintained in a narrow Coverage area, so Vivato's system can almost eliminate interference from adjacent channels (802.11b and 802.11g systems have this problem because the channel overlap rate is very high). 2. Application Overview B) Outdoor wireless solutions are mainly aimed at distant campuses, campus buildings with inconvenient wiring, and outdoor places suitable for learning, such as lawns and playground vacancies. The typical outdoor wireless campus network topology is shown in Figure 3. Vivato mainly uses a Vivato VP1210 802.11b outdoor Wi-Fi base station. The VP1210 outdoor base station with stable performance can be installed on the campus building to provide wireless access for the entire campus (indoor and outdoor), and can cover a large campus area, and can also be separated from tens of kilometers The campus provides remote wireless connection. As shown in Figure 3. Vivato Wi-Fi base station is connected to the wired network, covering the entire campus and branch campus, plus strong building penetration. At the same time, Vivato Wi-Fi bridges / routers are placed in places where the signal is not easy to reach. The bridge and the base station use the WDS protocol for wireless back-to-back relay connection. Both the base station and the wireless bridge can provide wireless connections to wireless Wi-Fi terminals, and mobile wireless users can smoothly roam in various wireless access devices. Sweep, welcome attention Official WeChat of Educational Equipment Procurement Network Master the latest and most authoritative information in the education equipment industry Copyright and Disclaimer: â‘ The copyright of all works on this website that indicate "Source: China Education Equipment Purchasing Network" belongs to China Education Equipment Purchasing Network, and may not be reproduced, edited or used in other ways without authorization from this website. Works that have been authorized by this website should be used within the scope of authorization, and indicate "Source: China Education Equipment Purchase Network". Violators of this website will be held accountable for legal liabilities. â‘¡ All works on this website that indicate "Source: XXX (non-this website)" are reproduced from other media. The purpose of this reprint is to transmit more information. This does not mean that this website agrees with its views and is responsible for its authenticity. Take direct responsibility and joint liability for infringement of such works. If other media, websites or individuals download and use it from this website, they must keep the "source of the manuscript" indicated on this website, and bear the legal responsibility of copyright and other. â‘¢ If the content of the work, copyright and other issues are involved, please contact this website within two weeks from the date of publication of the work, otherwise it is deemed to waive the relevant rights. Bleaching Cream,skin bleaching cream,hydroquinone bleaching cream,armpit bleach,underarm bleaching cream Zchoise Cosmetic Factory , https://www.zchoise.com
Based on the research results of information technology and the current situation of accelerating the process of informatization, the electronic exchange of information and the sharing of information resources have become the basic needs of all walks of life today. In recent years, the development of the network has greatly promoted the informationization process of the education system. While vigorously constructing the wired network, various schools are also paying more and more attention to the application of the wireless network on the campus.
In recent years, the practice of cable network construction, operation and maintenance has shown that since the current network is "wired", there are quite a few problems in the application that are inevitable. For example, many schools only access the network in some areas, but cannot take care of all areas; the current situation of tight school funds leads to a limited number of classrooms and libraries with network cables; some historical school buildings are not suitable for drilling and wiring; Schools in each school district have higher networking costs among schools. So, how to network in venues that are not suitable for network wiring? How to break through the limitation of network nodes in classrooms, laboratories and other occasions to realize multiple people surfing the Internet at the same time? The contradiction between the "blind spots" of these traditional wired campus networks and the new needs of teachers and students for "accessing information anytime, anywhere" will now be easily solved by Vivato wireless Wi-Fi network technology.
2. Vivato wireless product advantages
1. Coverage
Vivato Wi-Fi base stations use "smart antenna" technology, which is a planar phased array antenna system (similar to the systems used in many military radar systems). This phased array system consists of a flat panel array that can form a narrow radio wave beam electronically. Due to the concentration of signal energy, Vivato base station can provide longer distance coverage and stronger barrier penetration ability under the same base station transmit power. The coverage of the Vivato 2.4G Hz outdoor Wi-Fi base station is most typically a direct connection within 4 kilometers of the visible distance, the wireless connection between the base station and the base station can reach 50 kilometers, and the standard Wi-Fi users in the building have the longest connection Up to 1 km. The coverage area of ​​a Vivato indoor wireless base station is equivalent to the coverage area of ​​12 traditional APs, as shown in the following two figures:
3. Cost A Vivato wireless base station completes the entire wireless network, which is more economical in terms of equipment cost and installation cost than traditional AP solutions.
4. Easy to install Vivato Wi-Fi architecture products directly support 802.11b Wi-Fi customers without the intervention of other products. In actual application, only one Vivato base station needs to be installed, and the wireless network can be basically completed. Vivato Wi-Fi switching reduces many complex wiring and also reduces the large number of APs deployed for coverage.
5. Easy to manage Vivato system automatically connects when users use it. The Vivato system can be easily expanded and requires very little management when the system changes. The Vivato system is managed in the same way as the Ethernet switching system. When more Viviato Wi-Fi base stations and bridges / routers are used, a Vivato visual manager can be used for the entire system. Vivato products have built-in security mechanisms, management and application tools. They also integrate the current Layer 2 / Layer 3 LAN management system, including third-party WLAN access and security controllers.
6. Security support WPA and WPA2, multi-level security-TKIP provides Wi-Fi level encryption; IEEE 802.1x as authentication and access control protocol; VPN pass and terminate; authentication VLANS; and fraud access point detection, are included in inside. When used together, Vivato products can be managed through a unified interface.
3. Network topology
1. Topology description A) Use Vitato outdoor switches to cover large outdoor areas (such as stadiums, etc.), and then Vivato outdoor switches relay wireless connections with the equipment room wireless devices (Vivato outdoor switches or Vivato wireless bridges) to enable users Access the campus backbone network.
B) Use one or several Vitato indoor switches to cover the interior of buildings that are not wired or inconvenient to wire. Such as libraries, auditoriums, classrooms and student dormitories, etc., then the Vivato indoor switch is connected to the wireless equipment of the computer room (Vivato outdoor switch or Vivato wireless bridge) to relay wireless connection, allowing users to access the campus backbone network.
C) For buildings with internal wiring, there is no need to lay optical fiber, and the wireless connection between the room and wireless equipment (Vivato outdoor switch or Vivato wireless bridge) through the Vivato wireless bridge can be used to conveniently and cost-effectively connect the building The internal network is connected to the campus backbone network.
D) Use the VP1210 outdoor base station to provide indoor coverage application for a teaching building. Install an VP1210 outdoor base station on the adjacent building and transmit the signal from the outside to the building. The VP1210 signal can pass through the building wall, basically Meet all wireless Internet access requirements of the entire teaching building.
A) Compared to traditional AP access point solutions, Vivato's solution for Wi-Fi wireless devices with large coverage is much simpler. Vivato VP2200 wireless indoor base station is an indoor Wi-Fi base station based on 802.11g (54Mbps) . Thanks to the patented PacketSteeringä technology and phased array antenna, its coverage area is 12 times that of traditional access points. The high data rate and low cost of installation make large-scale coverage of Wi-Fi networks possible.
Install the VP2200 on the wall or in the corner to provide network access for the entire house or the first floor. This method eliminates the need for Wi-Fi to use as many devices as in the past, let alone use so many access points, which makes the system easier to install, manageable, and more secure, as shown in Figure 2.
figure 2
image 3
C) Use VP1210 outdoor base station to provide indoor coverage application for a teaching building. 
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