1.1 Sales Status of Wi-Fi Wireless Network Market
According to the market analysis survey released by NPD Group, a world-renowned market research organization in December 2011, in the market share of global wireless network products in 2011, NETGEAR is based on the advanced nature of its products and stable performance. And many advantages such as high cost performance have been recognized by more and more users, and the sales volume has been increasing. By the end of 2011, the global market share of NETGEAR Enterprise AP (FAT AP) still maintained the first position in the market; The global market share of AP (FIT AP) still maintains the second place in market sales;
(NETGEAR FAT AP market share) (NETGEAR FIT AP market share)
1.2 Evolution of WI-Fi Wireless Technology
The development of wireless local area network technology has a history of more than 20 years. We can summarize the evolution process into four parts:
Initial stage: In 1999, IEEE802.11b (11Mbps) and IEEE802.11a (54Mbps) standard protocols came out one after another, which maximized the network access rate of WLAN to 11Mbps and 54Mbps, and expanded the available frequency band from 2.4GHz to 5GHz;
Development stage: In 2003, there were three wireless technologies that effectively promoted the wireless network toward the commercial market; the release of the 802.11g standard protocol, which increased the network access rate on the 2.4G frequency band to 54Mbps, providing a speed for the market Higher, lower price, and backward compatible with 802.11b products; the approval of the IEEE 802.3af standard regulates Ethernet cable power detection and control, simplifying the installation, deployment and use of Wi-Fi wireless networks; Intel Centrino (Centrino) wireless mobile technology launched by Intel, which represents a new generation of notebook computers, greatly changed people’s habits, places and ways of using computers, and popularized wireless mobile technology to the masses;
In 2004, the formulation of the IEEE802.11i security standard protocol enhanced the security features of the 802.11 link and provided a more important security barrier for the user’s data security.
Leap stage: In 2009, 802.11n, as a new generation of Wi-fi standard, provided a connection speed of 300Mbps, which was six times the speed of 802.11g; MINO technology and smart antenna technology provided high-speed bandwidth and Better signal coverage distance; WMM (Qos) protocol provides smooth and optimized Wi-Fi access services based on data/video/voice for mobile terminals like PDA, IPAD, iPhone 4; High-security wireless network solutions provide a high-speed mobile basic network for industrial application systems;
Future Outlook: Since 2010, in the context of cloud computing and cloud services, IT services in the cloud market, Wi-Fi wireless network will become the most potential mobile Internet technology, it will be more wireless notebook computers, PDAs , Mobile phones and other wireless terminals provide secure access to wireless networks anytime, anywhere, cloud data storage/backup and on-demand application purchase services;
It is expected that in 2012, IEEE may complete the formulation of a new 802.11ac standard, which is a wireless technology based on the 802.11a 5GHz frequency band, and the theoretical transmission speed is expected to reach up to 1Gbps, which is more than three times the rate of 802.11n 300Mbps. ; The bandwidth will increase from the current 20MHz to 40MHz or 80MHz, and may even reach 160MHz. Plus about a 10% increase in actual frequency modulation efficiency.
1.3 NETGEAR leads the 11N market
At present, 802.11n 300Mbps wireless network products have become the mainstream of the market. NETGEAR has already launched 900Mbps enterprise-level products (dual-band four-mode 450Mbps) to the market, and will soon launch the next-generation 802.11n standard enterprise-level products (dual-band four-mode 600Mbps) with speeds up to 1.2Gbps, NETGEAR WI- FI wireless network leads the global mainstream market with its leader attitude;
two. NETGEAR medium-sized Wi-Fi wireless network solution
2.1 NETGEAR medium-scale Wi-FI wireless network topology
2.2 Introduction of NETGEAR solution
1. Applicable occasions:
This solution is ideal for applications such as medium and small-sized enterprises, government agencies, schools, hotels, hospitals and factories, and the needs of up to 1500 users. Easy to deploy and manage with the best wireless reliability, coverage and performance.
2. Program introduction:
Core Layer: NETGEAR ProSafe WC7520 Smart Wireless Controller
Access layer: NETGEAR 802.3af Gigabit POE switch
Wireless access: NETGEAR IEEE802.11N enterprise-class FAT/FIT integrated wireless AP
This solution is a high-performance, multi-functional WLAN infrastructure, an enterprise-level WLAN solution with centralized wireless network device management, unified user access authentication and security policy application. The wireless network core equipment NETGEAR ProSafe WC7520 intelligent wireless controller adopts the most advanced distributed basic network structure, which separates management and business data flow, and the data flow of 11N AP will not pass through the core controller in an excessively concentrated manner, and users do not need to worry about AC load;
With full-featured wireless protocol and functional support, such as L2/L3 fast roaming, automatic load balancing, automatic RF planning and optimization, enhanced QoS and rate limiting, Wi-Fi Voice, etc., it integrates current wireless networks flexibility and powerful high-end security features.
NETGEAR Wi-Fi wireless network solutions can also provide comprehensive management solutions such as rich wireless network access and management features, wireless network performance monitoring and optimization, fault location and troubleshooting.
3. Typical features:
FAT/FIT integrated AP
It is a true “zero” configuration – NETGEAR 802.11N enterprise wireless APs are all FAT (“fat”)/FIT (“thin”) integrated APs. Access point, provide signal coverage and connection access of wireless terminals in the area; when working with WC7520 AC wireless controller, Fat AP will be automatically discovered by AC, and AC will centrally deliver Fit AP firmware and configuration to AP, within minutes It can complete the configuration of the wireless network; there is no need to manually pre-operate the FAT AP, which will greatly reduce the workload of construction personnel and network maintenance personnel, and is a plug-and-play WLAN solution.
Intelligent distributed data local forwarding
With excellent centralized management and distributed architecture, NETGEAR intelligent wireless controller supports AP local data forwarding working mode under distributed architecture, and can provide the best 802.11N wireless network processing performance. In order to be processed quickly, the local transmission is automatically and quickly switched at the AP. When the L3 layer roams communication, the advanced data control technology on the controller can be used to process timely applications, such as VoWi-Fi needs to cross between IP subnets / across VLANs In addition, the ProSafe WC7520 can also provide enterprise-level fast roaming (FRS) with encrypted tunnels, which will not affect the L2 processing performance. This provides the most feasible solution for full 802.11n network deployment.
Smart RF Management
The intelligent radio frequency management function, facing the scarce channel resources of WLAN, can monitor the surrounding environment in real time, automatically configure the radio frequency parameters of all wireless APs, adjust the transmit power level and channel of the APs, etc.; try to avoid the same or similar channels as possible. interference, and this is a continuous process, ensuring that each AP can provide service on the best wireless channel with the most appropriate transmit power.
Intelligent RF management can also play the role of wireless network self-healing. When an AP fails, the wireless controller can sense the wireless coverage blind area in the area in real time, and immediately notify the APs around the faulty AP. Through intelligent radio frequency management, it can automatically increase the transmit power of the surrounding APs to reduce or eliminate wireless coverage. The role of covering blind spots.
The dynamic load balancing mechanism avoids the performance bottleneck caused by too many user terminals connecting to the same AP. According to the number of wireless users, wireless traffic or bandwidth utilization, and signal strength, it can intelligently transfer some users on APs with heavy load to other APs, so that the load on each AP can reach a relatively balanced state, ensuring that Experience for all wireless users.
Fast Roaming and WIFI Voice
The NETGEAR WC7520 Smart Wireless Controller supports fast roaming (FRS) mechanisms across VLANs and subnets, including 802.11i pre-authentication. Seamless L2/L3 fast roaming can fully meet the delay requirements of sensitive applications such as video and voice. WMM and Spectralink SVP QoS can support the priority setting of Wi-Fi voice, minimize the delay of Wi-Fi voice transmission, increase the access terminal capacity of AP, and speed up roaming switching time, especially for voice roaming, it will be faster than ordinary Data mobile transmission is more guaranteed.
ProSafe WC7520 Smart Wireless Controller currently manages NETGEAR Enterprise AP models including: WNDAP660, WNDAP620, WNDAP360, WNDAP350, WNAP320, WNAP210;
2.3 Advantages of NETGEAR Solution
The highest speed wireless LAN—IEEE802.11N 900Mbps enterprise wireless AP (dual-band four-mode 450Mbps)
Suitable for centralized management of less than 150 APs, or wireless network environment with access to 1500 users
Rock-like performance, stable, easy to deploy, manage and monitor