East Asian Sports Wireless Network Solution

With the gradual maturation of wireless network technology, its application in all walks of life is becoming more and more extensive. Recently, Shanghai East Asia Sports Culture Center Co., Ltd. adopted the Abovecable wireless network solution to realize the Internet wireless access in its internal area, expand the service scope of the internal network, and efficiently manage, transmit and utilize digital information.

Shanghai East Asia Sports Culture Center Co., Ltd. is Shanghai East Asia (group) Limited by Shanghai Sports Bureau and Shanghai Cultural Broadcasting and Television administration, Shanghai Wen Hui Xinmin United Press Group of Sports culture Industry company, its management and management of the area for the Shanghai Stadium, The Shanghai gymnasium and all the entities it belongs to. Shanghai East Asia Sports Culture Center Co., Ltd. has a world-class, domestic leading large-scale outdoor stadium-Shanghai Stadium, the first largest theater-type large-scale indoor stadium-Shanghai Grand Stage (Shanghai Gymnasium), the international first-class water Sports Museum-Shanghai Natatorium, and nearly 300,000 square meters of outdoor plaza, Shanghai is the largest, most functions, the most comprehensive facilities, the most popular, set sports, theatrical performances, fitness and entertainment, advertising development, hotel catering, shopping display, urban tourism as one of the large-scale integrated cultural and sports Center.

Due to the rapid growth and expansion of sports industry, Shanghai East Asia Sports Cultural Center urgently needs a stable and efficient data network to ensure the day-to-day operation and management of the company's processes. East Asian Sports very early on the establishment of the Enterprise network plan, through the corporate network of the company's interior of all the buildings and sports venues connected to achieve resource sharing, work together for the purpose. However, in the process of implementing the Enterprise network, the East Asian Sports Cultural Center found that using traditional cable and cable to connect the various buildings, it is difficult to fit the actual situation of the company, and expensive. As for leased telecommunications lines, bandwidth requirements are high, and therefore the cost is very high. In this case, the East Asian Sports Culture Center adopts abovecable Wireless network scheme, not only saves the construction cost and the running cost, realizes the Enterprise informatization inside the company, but also has the easy expansion and free mobility which the traditional network can not compare with each other.

Realizing the wireless roaming of each area with the stadium as the center

The wireless network implemented by the East Asian Sports Cultural Center will cover the podium of the Shanghai 80,000 People's Stadium, VIP area and News center; make Shanghai Grand stage, training Hall, office building and Shanghai Stadium connect through Wireless bridge, and cover the indoor network of Shanghai Grand stage podium, VIP area and North Hall, training hall and office building. Finally through the wireless network and Shanghai 80,000 People Stadium, ADSL network of exports connected.

As stadiums and floors are dispersed, abovecable in the implementation of the project, the network system in the center of the room selected in the newly built 80,000-person stadium, while the entire network of Internet exports are also located in the 80,000-person stadium, so the 80,000-person stadium has become the central part of the entire network system. In the 80,000-man stadium with the original Shanghai Grand stage, the Training hall and the East Asian Sports Cultural center of the three-storey office building to establish wireless backbone bridge, so that the Shanghai Grand stage, training Hall and three-storey office interior of the cable network and the new addition of wireless network parts can be connected to the Shanghai Stadium in the Network Center room.

In this scheme, Abovecable utilizes its advanced WLAN technology to extend the Internet to every traditional wiring dead end, providing a new WLAN access solution (Wireless local area network), This scenario consists of a wireless access node AP (access point) and a wireless network card. The Wireless LAN solution can also be combined with existing wired Ethernet, support IEEE Wireless LAN standards, meet the IEEE802.11 and ieee802.11b standards, can easily increase the wireless LAN load capacity and reduce the total cost.

The wireless network of 80,000 People stadium project is divided into two parts: wireless network backbone bridge part and wireless network indoor and outdoor coverage part. The backbone bridge part uses the wireless network Bridge and the directional antenna completes the wired network the extension, the covering part includes Shanghai 80,000 People Stadium rostrum, the VIP area and the News Center wireless network coverage and Shanghai Grand stage podium, VIP area and the North Hall, the Training hall and the Office Room network coverage.

Secure and thoughtful backbone bridge design for wireless networks

Considering the actual demand of enterprise operation, wireless network backbone bridge needs to achieve the following technical indicators: (1) The network bandwidth between buildings and buildings is guaranteed to be above 10M; (2) The network connection between buildings and buildings should not interfere with each other as far as possible.

After the engineer's field survey and signal testing, center point Shanghai 80,000 People stadium and Shanghai Grand Stage, training Hall and three-storey office building visual range, no obvious blocking, good communication conditions, wireless signal testing also shows that fully meet the requirements, which for the realization of wireless network backbone Bridge provides a good condition.

The wireless bridging program first set up in East Asia Regal Hotel building 12dB omni-direction antenna, responsible for the Shanghai Grand Stage, training Hall and the three-storey office to achieve wireless bridge communication, the omni-antenna through the connection cable and a abovecable acap2001-11 wireless broadband switch connection. Considering the safety factor, the antenna is equipped with an arrester.

Second, the Shanghai Grand Stage, training Hall and the three-storey office building part of the erection of bridge contacts, the three parts responsible for and 80,000 people stadium to achieve backbone bridge. Three bridge Contact system configuration is identical, in each floor of the commanding heights erected 15dB directional antenna, by adjusting the position and angle of the antenna to ensure that it can and East Asia Regal Hotel Roof erected 12dB omni-directional antenna to achieve bridge communication, These directional antennas are connected by connecting the cables and the abovecable acap2001-11 wireless broadband switches placed in each building.

　　

Figure: Wireless Network Bridge location signal
Through theoretical analysis and field signal testing, this kind of design can meet the requirement of network connection rate above 10M and can guarantee the need of running all kinds of network applications.

In this wireless backbone bridging network, the abovecable acap2001-11 Wireless Broadband switch is set to bridge mode (PXP mode) and uses the same wireless channel (1, 6, or 11 channel) for communication, while 10 of each wireless broadband switch 100M Ethernet ports are connected to the wired Ethernet switch of the building in which they are located. Through this bridge design, Shanghai Grand stage, training Hall, three-storey office building, the original independent network subsystem through the extension of wireless network, with the Shanghai 80,000 people in the stadium of the core LAN system interconnection.

After such a configuration, the backbone of the wireless network design completed, the central main building of the 80,000-person stadium through the wireless network at a speed of 11M with the Shanghai Grand Stage, training Hall, office buildings, located in these venues wired and wireless users can run Network Center server to provide a variety of network applications, At the same time through the Network Center ADSL Outreach node, these users can easily achieve access to Internet resources.

Free interconnected wireless network coverage

The function of wireless network indoor coverage is to make use of wireless network equipment to achieve wireless signal coverage in specific work areas, so that wireless network users in this area can realize network connection and resource sharing through wireless network devices. The indoor coverage of wireless networks is particularly effective in office areas and specific functional areas, where users are characterized by extensive use of mobile communications devices such as laptops, PDAs, PDAs, and the mobility of their workplaces, where users will work in a fixed area only at specific times. Moreover, this type of user in the work of most irregular groups, the workplace environment layout will often change, so the use of wireless coverage for such places is particularly appropriate.

In the project design, the scope of wireless network indoor coverage includes the podium of Shanghai 80,000 People's Stadium, VIP area, News Center, Shanghai Grand Stage podium, VIP Hall, Beijing University Hall and the second floor of East Asia Sports Cultural Center office building. According to the scene, the use of one or two different frequencies of wireless broadband switch in each functional area can achieve effective coverage of the network and reasonable allocation of bandwidth. This simplifies network design, on the other hand, it also provides users with broadband Internet access, and will be able to expand very conveniently in the future.

Wireless devices with excellent performance

In this project, Shanghai East Asia Sports Cultural Center Co., Ltd. all adopted the abovecable's own equipment. 11Mbps abovecable acap2001-11 Wireless Broadband switch as the center of Wireless network, each terminal through the wireless broadband switch transfer, can achieve wireless terminals, The communication between the wireless terminal and the wired network terminal and the connection between the wireless terminal and the international interconnection network through the wired LAN. Two remote wired LANs are bridged by wireless broadband switches at both ends to enable real-time links between the two wired LANs.

The wireless card uses the Abovecable Acpc2010-11/pcmcia. It as a wireless terminal access to the wired LAN connection equipment, is a high-power wireless network card, compared to the ordinary power of the network card has a larger range of transmission, expanding the reception range of wireless signals, high sensitivity, low power consumption, support up to 11Mbps transmission rate. With this wireless network card, wireless terminals and wireless broadband switches and wired LAN to achieve links to ensure the connection with other wireless terminals, wired network terminals and international Interconnection network.

The amplifier chooses the Abovecable™acam series, which is a two-way amplifier designed to extend the working range of 2.4GHz wireless devices, and is matched to a variety of modulation extended frequency techniques such as direct sequence (DSSS) or FH (FHSS). The series amplifier consists of an intelligent calculator and an automatic gain restraint circuit to maintain the output power and prevent the input signal from saturation. At the same time, the amplifier's built-in radio frequency (RF) sensor can induce the input power size and automatically adjust the signal distortion to the minimum to ensure the desired signal quality. This makes the output of the wireless broadband switch Low-power RF signal amplification and the antenna to receive useful signals to enhance, effectively improve the wireless network service quality and service distance.