Hotzone Operation

 

The FlexNET ASN-820 and ASN-900 enable the use of IEEE 802.11a/b/g radios in large-scale Wi-Fi Hotzone networks, which rely on highly integrated product design. The ASN- 820 and ASN-900 products include two independently configurable IEEE 802.11a/b/g radios, 2 WAN interfaces (10/100 Ethernet), 2 N connectors for external antennas and a connector for power supply with an option for RS-485 remote connection. WiMAX backhaul can also be optionally included.

 

The ASN-900 Wi-Fi Hotzone/link router provides a unique combination of features that have so far been available in dedicated link or access point products only. The ASN-900 comes with an integrated 20 dBi narrow beam panel antenna which is designed to be used in point-to-point connections. Other link features include robust data encryption solutions where AES (advanced encryption standard) is used to protect the link connections, and advanced tunnelling solution which enables two ASN-700/900 products to be used in wireless bridge configuration. The AES encryption protects data traffic against eavesdropping, which is particularly critical in transit and pointto- point connections where data traffic from different sources are aggregated into backhaul traffic.

 

The Product chassis includes electronics and radio components for two IEEE 802.11a/b/g radios and upto one WiMAX backhaul radio. The FlexNET Hotzone products support IP routing that makes the products wireless outdoor routers. Combination of two IEEE 802.11a/b/g radios with a Hotzone router makes it possible to use both radio channels and IP addresses in the network plan and deployment. Each radio module takes care of one sector; therefore typical problems like hidden node can be avoided in the Wi-Fi Hotzone network. Versatile installation possibilities and WEB-user interface give operators flexible configuration possibilities to deploy the FlexNET Hotzone products.

 

An additional unique advantage of the FlexNET products is that they are designed for outdoor deployment. No special separate equipment like outdoor chassis, warmer etc. is needed for installation. Outdoor proof product saves time and money in sourcing and installations. All necessary tests and certifications for outdoor use have been done. Integrated product design also minimises radio interferences between Wi-Fi transceivers. Sufficient isolation between transceivers should be taken in account in multiple radio systems. This allows the use of smaller frequency difference, which increases the spectrum efficiency.

 

Citywide Wi-Fi Hotzone networks can be built with average 200-500 m long cell ranges. Longer distances and higher signal to noise ratios are achieved with directional antennas and careful network planning. The FlexNET ASN- 820 and ASN-900 products have been developed for extended, large-scale sectored Wi-Fi Hotzone networks.