Transcript
Network Design Overview
DigitalPath, Inc. 275 Airpark Boulevard, Suite 500, Chico, CA 95973 | 800-676-PATH | www.digitalpath.net CONFIDENTIAL © 2000-2005 DigitalPath, Inc. All rights reserved
Network Design Overview Physical Network Overview DigitalPath™ utilizes an innovative patented network design. This design is flexible for mounting in diverse environments depending upon node density and subscriber coverage. It is capable of bridging and routing. The Gateway The gateway is the bridge where the Internet bandwidth is connected to the wireless network. This location houses the access concentrators and network monitoring systems. It also houses multiple radios for connectivity to downstream devices each on unique network segments. Typically, backhaul radios utilizing the 5GHz spectrum are used to feed Radio POPs that re-distribute the bandwidth out to other locations. Radio POP A Radio POP consists of multiple devices that distribute network traffic to other network legs via additional downlink radios. It is typically fed with a wireless uplink radio or fiber connected to the gateway. This Radio POP typically has longer UPS runtime than a standard repeater access point. Repeater Access Point A Repeater Access Point has one or more devices and can be mounted on light poles, rooftops and industrial buildings. These devices distribute traffic to customer CPEs, laptops, and optionally can contain downlink radios to distribute connectivity to other Access Points. Customer Premise Equipment Customer Premise Equipment provided by DigitalPath™ typically is located at a residential home or business. It also expands the wireless network for mobile users on laptops since the CPE also acts as an access point without any dedicated backhaul. The CPE can be installed indoors or outdoors. DigitalPath, Inc. 275 Airpark Boulevard, Suite 500, Chico, CA 95973 | 800-676-PATH | www.digitalpath.net CONFIDENTIAL © 2000-2005 DigitalPath, Inc. All rights reserved
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Network Design Overview Physical Network The diagram below represents how the network components connect together. The green links are primary 5GHz backhaul links. The red links are optional backup mesh-backhaul links from 5GHz omni-directional antennas that provide redundancy in the network in case of a point of failure. The blue links are 2.4GHz 802.11g connections to mobile users or a fixed CPE.
Diagram
DigitalPath, Inc. 275 Airpark Boulevard, Suite 500, Chico, CA 95973 | 800-676-PATH | www.digitalpath.net CONFIDENTIAL © 2000-2005 DigitalPath, Inc. All rights reserved
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Network Design Overview Physical Network DenseNode™ Architecture The DenseNode™ Architecture is deployed in environments that have high subscriber density. The equipment is installed on light or power poles to achieve a repeater density of 20 or more repeaters per square mile. BroadNode™ Architecture The BroadNode™ Architecture is deployed in environments that have low to mid subscriber density. The equipment is installed on residential rooftops, towers and industrial buildings and utilizes eve or tower mounts for installation. Repeater density of 7-10 repeaters per square mile is deployed in this architecture. Infrastructure Details Repeaters/SQ mile*
CPE Required
3 (BroadNode)
Yes(outdoor)
7 (BroadNode)
Yes(outdoor)
20-30 (DenseNode)
Yes(indoor/outdoor)
30-40 (DenseNode)
Yes(indoors)
50-75 (DenseNode)
No(laptop)
*Repeater density varies based on structure height and material
DigitalPath, Inc. 275 Airpark Boulevard, Suite 500, Chico, CA 95973 | 800-676-PATH | www.digitalpath.net CONFIDENTIAL © 2000-2005 DigitalPath, Inc. All rights reserved
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Network Design Overview Switching and Routing Overview Networks are built in a hub and spoke fashion. To support node depth of 20 nodes or more, a mixed bridged/routed combination must be used. Bridged backhaul is used to reduce jitter and latency through each hop in the network (i.e. VoIP, Video). To manage the customer connections, each Access Point is routed at each Repeater to isolate network traffic (i.e. Broadcasts, Viruses, File Sharing) from the backhaul subnet. This logically isolates traffic between the two network segments. Mesh Redundancy Primary redundancy is achieved via the 5GHz links between repeaters and at 2.4GHz using 802.11g via edge node devices for secondary redundancy.
DigitalPath, Inc. 275 Airpark Boulevard, Suite 500, Chico, CA 95973 | 800-676-PATH | www.digitalpath.net CONFIDENTIAL © 2000-2005 DigitalPath, Inc. All rights reserved
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