User profile:
Guangzhou Zhongxing Elementary School is located on Taojin North Road in Tianhe District of Guangzhou and Dongshan District, which was built in September 1991. The school's teaching equipment is quite complete: there is a CCTV live broadcast system and a cable broadcasting system. The classroom is equipped with "three machines, one screen, one physical projector", a computer room, a speech room, a multi-functional teacher's teaching and research room, and a reading room (digital 100-inch computer) (Projection system), chorus room, dance room, electronic piano room, art room, nature laboratory, labor-only room, library room, etc. Zhongxing Primary School currently has 20 classes, 922 students and 53 faculty members.
User needs:
With the advent of the information age, intelligent multimedia teaching has become more and more popular with teachers and students, and campus information teaching has also become a criterion for school grades. Wireless local area network (WLAN) has the advantages of being independent of the environment, flexible and convenient, not affecting the original decoration layout, and short network construction period. Compared with traditional wired access methods, wireless local area network can not only realize many The application can overcome the inconvenience caused by cable limitation and become one of the most suitable networking methods for multimedia classrooms in primary and secondary schools in major cities.
In order to adapt to the development direction of multimedia teaching (including animation production, multimedia broadcasting), Guangzhou Zhongxing Primary School now has a first-grade (3) class, 48 ​​classmates have a Lenovo Zhaoyang laptop computer, and teachers use the "point of view" network teaching software Multimedia teaching for classmates. Teaching includes taking various materials from the campus network server center. Due to the inconvenient wiring due to the impact of the existing classroom environment and the inconvenience of mobility in the wired LAN, I want to adopt high-bandwidth 802.11g wireless products to combine with the extension of the existing school network to build a multi-functional Multimedia Classroom.
Technical solutions:
As a pioneer in the field of wireless local area networks, NETGEAR has been leading the development trend of wireless local area networks. It not only provides 802.11b, 802.11a, 802.11g and 108M Super G wireless network products, but also provides 802.11a / b / g dual-band three Mode-mode (up to 108M in the pressurized mode of its own products) wireless network products, these devices are very suitable for the construction of multi-media school network data network for school. According to the above network requirements of customers, combined with the development trend of today's network technology, the technical solution provided by NETGEAR uses the entire series of NETGEAR products based on the latest wireless LAN standard 802.11g: Wireless LAN access point WG602 and 802.11g 54Mbps wireless notebook Network card WG511.
The specific network plan topology diagram is as follows:
The multi-media restroom uses a NETGEAR 8-port 10 / 100M Ethernet switch FS608 to connect to the school ’s existing wired Ethernet, and NETGEAR company based on the latest wireless LAN standard 802.11g 54M wireless access point WG602 to connect to the network switch On the FS608, a 54M high-bandwidth wireless multimedia classroom data network was established quickly and easily, and finally connected to the Internet through the exit of the campus network.
The network structure of the multimedia classroom is star-shaped, and the network equipment is divided into two levels. Level 1 selects NETGEAR FS608 switch and connects to the school ’s existing wired campus network. Level 2 is where 3 WG602 wireless access points are connected by wire To FS608, three wireless access points WG602 are responsible for the wireless access of 48 NETGEAR WG511 CARDBUS wireless notebook network card clients.
Three WG602 802.11g 54M wireless access points, configured in appropriate places in the multimedia classroom, and dividing the three APs into three non-overlapping channels (this solution uses three channels of 1, 6, and 11), Cover every corner of the entire multimedia classroom, provide students with 54M wireless broadband network access for multimedia learning, and accept teachers' multimedia teaching.
Why choose 802.11g wireless LAN products:
The advantages of the IEEE 802.11g standard are:
High data rate — 54Mbps (same as 802.11a standard)
Fully compatible with the 802.11b standard Under the same physical environment, 802.11g devices can provide approximately twice the distance coverage of 802.11a devices when they also reach a data rate of 54Mbps. When the data rate of 11 Mbps is also reached, 802.11g devices can provide similar distance coverage as 802.11b devices.
The free 2.4GHz band is available in most countries around the world. The IEEE 802.11g standard products will surely get the fastest acceptance in the market, and will replace 802.11b as the new mainstream standard for wireless local area networks in a shorter period of time. Therefore, after repeated consideration, users choose a wireless local area network solution based on the latest standard 802.11g.
Application effect
Through the user's teaching test, there is no difference between opening the multimedia teaching software for multimedia teaching and the effect of establishing a wired network. It was highly praised by the teachers of Zhongxing Primary School. And the operation is very stable, 48 wireless users are 54M to access WG602, and use WEP 128-bit encryption to ensure that other users can not access the network.
Why choose Netgear:
For this project, Guangzhou Zhongxing Primary School chose 802.11g wireless LAN products from Netgear of America. The main reasons are:
From the point of view of advanced products, 802.11g is the latest product of the current mainstream standard, and has the advantages of performance and price, and is backward compatible with 802.11b standard products. NETGEAR, as the world's leading manufacturer of wireless local area networks, took the lead in providing a full range of wireless local area network products based on IEEE802.11g formal specifications in China.
Taking into account the application needs, Guangzhou Zhongxing Primary School chose 802.11g 54M high-bandwidth standard products, which will fully guarantee users' various business applications.
Wenzhou Xinyu Imp & Exp Co.,Ltd , https://www.somgar.com