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New Tropos Adaptive Mesh Connectivity Engine Provides Quantum Leap in Metro-Scale Wi-Fi Connection Reliability.

SUNNYVALE, Calif. -- New Mesh Software Capability Boosts Reliability of Metro-Scale Wi-Fi Client Connections to Deliver Outstanding User Experience and Improve Operator ROI

Tropos Networks, the market leader for metro-scale, Wi-Fi mesh network systems, today announced its new Adaptive Mesh Connectivity Engine (AMCE), mesh software which provides a quantum leap in a network operator's ability to consistently deliver reliable Wi-Fi connections to a broad range of clients in a metro-scale mesh network. Tropos developed the AMCE software, which runs on Tropos MetroMesh routers, to compensate for the wide variations in Wi-Fi devices that use metro-scale mesh networks. In addition, Tropos has incorporated new client reporting capability into Tropos Insight that provides network operators with the visibility into client operation and performance that they need to cost-effectively manage their networks.

AMCE provides adaptive tuning on each Tropos MetroMesh router that dynamically accommodates the broad range of Wi-Fi clients used to access metro-scale mesh networks. Metro Wi-Fi networks that do not compensate for widely variable, often low power, clients cannot provide predictable connections, compromising customer satisfaction. Based on knowledge gained while deploying the largest metro Wi-Fi customer base, AMCE enables Tropos MetroMesh networks to uniquely deliver the essentials of reliable client connectivity.

"We use Tropos' Adaptive Mesh Connectivity Engine in the Cyber Spot, a citywide Wi-Fi network in St. Cloud, Florida," said Jonathan Baltuch, president of MRI. "AMCE significantly improved the reliability of client connections in the St. Cloud network, enabling us to offer an outstanding user experience in St. Cloud's Cyber Spot. In fact, in a recent survey, St. Cloud Cyber Spot users rated the reliability of the city's Wi-Fi network higher than that of their cellular telephone service."

"Our extensive deployment experience has shown us that client connectivity problems, not capacity, create the single biggest user experience issue facing metro-scale Wi-Fi network operators," said Ellen Kirk, Vice President of Marketing for Tropos Networks. "Wi-Fi mesh systems must adapt to a broad range of clients -- laptops, PDAs and portable gaming devices, for example -- to ensure that network users can connect reliably. Subscribers experience far more reliable connections to metro-scale Wi-Fi networks built using Tropos MetroMesh routers running AMCE software, regardless of the type of Wi-Fi client they are using."

Even traditional, standards-compliant Wi-Fi client devices, such as laptop computers and Wi-Fi bridges used to connect homes to metro-scale Wi-Fi networks, exhibit wide variability in their technical parameters. Power output can range from 10 mW to 200 mW or more. Some clients stick to access points that offer poor connection quality; others wander from access point to access point. Many clients connect to metro Wi-Fi networks at lower than optimal speeds, dramatically reducing client throughput. Mobility is another area of inconsistent performance on the part of Wi-Fi clients. These variations, tolerable in hot spot environments, cause unreliable connectivity in metro-scale settings, resulting in an inconsistent and frustrating user experience. And, as metro-scale Wi-Fi networks have become more popular, users have connected a wider range of Wi-Fi clients, including PDAs, cellular telephones, gaming devices, meter readers and surveillance cameras, to them, further increasing device variability and lowering reliability.

How AMCE Works

AMCE dynamically detects and compensates for the unique characteristics of attached Wi-Fi clients. It creates more reliable client connections to metro-scale Wi-Fi networks.

AMCE uses per-packet transmission power and timing control to compensate for low-power client devices. This enables clients to make better decisions about which MetroMesh router offers the best connection to the Wi-Fi network and the data rate that should be used for the connection.

AMCE intelligently mitigates local interference, improving packet reception. This capability delivers high throughput to client devices in dense metro-area deployments.

Additional AMCE features improve client connections in high user-density settings and further improve client connection reliability and throughput.

The benefits of AMCE are delivered via software running on Tropos MetroMesh routers. They are available to all Wi-Fi clients connected to a Tropos MetroMesh network. No special client hardware, software or configuration is required.

AMCE is the second announced element of Tropos Networks' reliable client connection initiative. The first, the Tropos Metro Compliant Extensions (TMCX), provides a specification for the wireless modems used for residential and small-business access to metro Wi-Fi networks. TMCX-compliant devices can more reliably connect to these networks. AMCE improves the connection reliability of all Wi-Fi clients, especially those that don't conform to the TMCX specification.

AMCE, part of the MetroMesh OS that ships with each Tropos MetroMesh router, is available now. Customers with valid Tropos support subscriptions can obtain updated software for their existing MetroMesh routers at no additional cost. Additional AMCE capabilities will be available in the fourth quarter of 2006.

New Client Reporting in Tropos Insight

In addition, Tropos has incorporated new client reporting capability into Tropos Insight that provides network operators with the visibility into client operation and performance that they need to cost-effectively manage their networks. Tropos Insight tells network managers how many subscribers were active on the network, what type of client they were using, how much bandwidth they used, mobility, and what their signal-to-noise ratio (SNR) and packet error rates were on an hourly basis. It also aggregates and analyzes data across the network, pinpointing, for example, who are the top bandwidth users, which clients have the poorest SNR and which clients have the highest packet error rates, again on an hourly basis. This allows trending of data by time of day, day of week and over time, and improves the management decision-making ability of network operators. Further, clients identified in most reports can automatically be plotted on a map. For example, with the click of a mouse, the network's top ten uploaders and downloaders can be identified by locations.

The new client reports are shipping now as part of Tropos Insight. Current Tropos Insight customers with valid Tropos support subscription can obtain an updated version of Tropos Insight containing the new client reports at no additional cost.

About Tropos Networks, Inc.

Tropos(R) Networks is the market leader in delivering metro-scale Wi-Fi mesh network systems. Our systems have been selected to unwire more major league cities than all competitors combined and are installed in 30 countries. The patented Tropos MetroMesh(TM) architecture delivers the ultimate scalability, high capacity at low cost and great user experience demanded by carriers, municipalities and network users. Our unique expertise includes high-performance mesh software development, mesh RF engineering, metro-scale network planning, deployment and optimization, and navigating the municipal approval process. Tropos Networks is headquartered in Sunnyvale, California. For more information, please visit, call 408-331-6800 or write to

Tropos is a registered trademark of Tropos Networks, Inc. Tropos Networks, MetroMesh, PWRP, AMCE and Metro-Scale Mesh Networking Defined are trademarks of Tropos Networks, Inc. All other brand or product names are trademarks or registered trademarks of their respective holder(s).
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Publication:Business Wire
Date:Jul 13, 2006
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