Introduction
As the rapid development of wireless broadband access technology, people ask for more on wireless network. Conventional wireless broadband access products which are used widely in enterprises bring us some problems, such as the configuration and management on numbers of wireless access units, integration between wired and wireless network, etc. Enterprises demand for new technology and products, under this condition, wireless broadband access network solution centered on wireless network switch exists. Leading by the combination of ZA-5000-WS (wireless network switch) and ZA-5000-TAP (Thin AP), Nanjing Z-Com Wireless provides wireless broadband access solutions for enterprise, campus and carrier, which solve the problems hard to overcome for conventional one. This is a cornerstone for wireless broadband access network.

Features
 Convenient installation and maintenance. Thin AP can realize PnP. Wireless switch takes the place of network administrator to manage and maintain the wireless access network. The entire configuration, firmware upgrades and security policy update could be achieved on wireless switch.
 Seamless integration with wired network. Due to the tunnel technology adopted between wireless access point and wireless network controller, the wireless network is isolated completely from the wired network bearing wireless data, therefore, wireless network construction is not limited by the security policy and configuration of existing wired network any more; and users don? have to modify on wired network that is harmful to or collide with current business.
 High reliability. Different from low cost wireless switch solution using SOHO-class wireless access point on the market, Nanjing Z-Com Wireless combines high reliability, stability and excellent performance of telecom application with the advantages of wireless switch and ensures reliable operation based on wireless broadband access network, depending on our accumulated success in telecom market.
 Reduced overall operation cost. Equipment cost of wireless broadband access network takes only a portion of the overall operation cost, Nanjing Z-Com Wireless provides wireless network switch solution which greatly minimizes the cost on installation, maintenance and extension of wireless broadband access network and on network adjustment resulted from new business support.
 Centralized access control and security mechanism.
 Comprehensive wireless service. Services critically related to wireless application: Auto Channel Selection, Load Balance, Seamless Roaming, Bandwidth Control, Anti-virus, etc. Enhance the convenience to access network with wireless broadband.

Highlight
 Auto Channel Allocation
Wireless network switch can allocate appropriate and low-interference channel for each thin AP automatically, and optimize the coverage and access capability of wireless broadband access network.
 Auto Power Adjustment
Wireless network switch can adjust the transmit power for each thin AP automatically to eliminate coverage hole.
 Load & Flow Balance
Wireless network switch can monitor the real-time load status for each thin AP, and equalize the wireless terminal under the thin AP, which is in congestion or of low service quality without environmental effect, to another AP. It can even tactically refuse link request from some wireless terminal to ensure the link quality of other wireless terminals.
 Fast Roaming
Using only one wireless switch, the roaming of wireless terminal among thin APs will not be limited by wired network, and the IP, security and authentication of wireless terminal will not change along with the movement of terminal itself. The wireless terminal keeps connecting while moving among APs.

Conventional WLAN Solution
The structure of conventional WLAN is wireless access point (Rich AP) plus switch. However, this conventional distributed structure is facing various problems: users have to manage and configure each AP respectively; potential network attack and interference can not be discovered within the whole system and the load balance capability could be affected therefore; AP can not distinguish the demand of real-time application like wireless voice from data transmission application; security can not be maintained if certain AP suffered stolen or damage.

WLAN Solution of Wireless Switch
In centralized management structure taking wireless switch as center plus simple access point (Thin AP): enhanced security through centralized management, simplified AP and end-to-end communication; smarter wireless broadband management; and more efficient wireless security policy can solve the problems in conventional WLAN. In this structure, the thin AP substitutes for enterprise-class AP. The security, mobility, QoS and other features could be managed within the enterprise in a centralized way.

	Conventional WLAN Solution	Wireless Switch WLAN Solution
Project Cost	◆Higher Rich AP requires more for hardware, more expensive, and construction cost for large scale network is higher.	◆Lower Thin AP requires less for hardware, cheaper, lower overall construction cost although a wireless switch is added.
Construction Cycle	◆Long Administrator has to configure and modify each AP respectively which cost much in time and human resource.	◆Short Administrator configures thin AP at where the wireless switch located, PnP, save time and human resource.
Maintenance Cost	◆High Integrated with almost all the network functions in AP, great device resources (storage, CPU, etc.) consumption with instability. Network construction requires higher for workers, sometimes the security setup of wired network should be adjusted to satisfy the security demand of wireless access.	◆Low Most functions of thin AP are transferred to wireless switch, hardware requirement and resources consumption reduced, stability enhanced. Wireless network won? be limited by wired network thanks to tunnel technology, convenient management and maintenance and maintenance cost reduced.
Configuration Management	◆Complicated Configure parameters of RF, security and network on each AP, and is limited by the security and network setup of wired network where the wireless access point locates in.	◆Simple Centralized intelligent management. No more need to configure on each thin AP, related configuration could be downloaded to the thin AP when connecting to the wireless switch. Configuration on wireless switch means on all the thin APs as well.
Security	◆Low All the information is saved in AP. The whole network is in danger if one AP suffered stolen.	◆High All the information is saved in wireless switch, hard to be stolen.
Seamless Roaming	◆No IP address of wireless terminal changes along with the setup of wired network it locates in. Upper application disassociates during wireless terminal roaming.	◆Yes Wireless terminal is not limited by wired network during roaming among thin APs, IP, security and authentication won? change along with the movement of terminal.