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Tactical Scalable MANET (TSM)

TrellisWare’s MANET products utilize our Tactical Scalable MANET (TSM) waveform. TSM combines TrellisWare’s most advanced physical layer and network layer  technologies to enable wideband networked connectivity when nothing else works.  TSM is a significant advance over even the most advanced state of the art competing approaches.  Traditional approaches to wireless networking use a stacked architecture with the physical and networking layers designed and operating largely in isolation from each other.   Cross-layer designs where some information is shared between the physical and network layers can provide slight improvements in performance but still have difficulty in high dynamic and high multipath environments.  TrellisWare’s TSM effectively smashes the physical and network layers into a single, optimized multi-hop communication medium capable of capturing and processing multipath energy.  The result is a waveform capable of instantly adapting and maintaining connectivity across a wide range of dynamically changing operating environments without relying on fixed infrastructure.

Operational Environments

Different MANET applications and deployments present drastically different network connection topologies and, therefore, place different stresses on network designs.  For example, operation in caves or mines may yield a line network or “string-of-pearls” topology.  In this case a single link failure will result in failure in multi-hop communications.  Thus, the robust TSM physical layer is critical in such scenarios where multipath fading and path losses are the limiters.  In urban applications, nodes may be either sparsely distributed or clustered densely near each other.  In examples of dense node distributions, conventional approaches often fail because they require registration and tracking of the network connection topology – e.g., neighbor tables, routing tables, and link state information. Because TSM does not rely on such tables, it is robust to the node density allowing rapid self-forming and self-healing.

networking dynamic range

Dynamic Network Architecture

Mobility is a major challenge in MANET operation.  As users move through a harsh propagation environment, even the best designed links will fail intermittently inducing rapid changes in the network connections.  This dynamic network topology wreaks havoc on conventional MANET protocols as neighbor tables must be rapidly updated and brittle multi-hop links must be repaired and rediscovered.  In contrast, TSM natively adapts to any connection topology to provide the most robust and rapid multi-hop communications possible under the current topology.

TSM Provides Best MANET Features

Whether communicating in the mines of West Virginia, across urban downtown areas, inside and out of high rise buildings, throughout the interior of a large cargo ship, across rugged border terrain or a large expanse of coastal seashore, networked communications require the same attributes.

  • Voice, IP data, video and location services
  • Transparent self-forming, self-healing networking
  • Network entry <1 sec for self-forming, self healing
  • Scalability to 10s, 100s or even 1000s of units
  • Robustness to multipath and interference
  • Auto adaptation to continuous changes in the network topology
  • Anywhere to anywhere exchanges with no centralized control
  • No fixed infrastructure