Figure 1 presents a system view of the COSMOS testbed. It is based on a multi-layered computing system built in a bottom-up manner with commodity components, programmable hardware, and open-source software.

The collection of global testbed services are deployed on a pair of computing clusters located at WINLAB's ORBIT facility in North Brunswick, NJ and Columbia University CS data center (CRF) in West Harlem in New York City, NY.

COSMOS Testbed Architecture
Figure 1: Testbed Architecture

These core services are supporting multiple experimentation domains. As is shown in Figure 1, each of the domains consists of the following components:

  • on-boarding (console) and domain support server(s)
  • SDR nodes (user devices and radio hardware),
  • edge cloud servers ("radio cloud")
  • general purpose computing cloud servers ("core cloud")
  • networking (both optical and electrical)

While most of the devices in each domain are fully under user control (labeled with (U) in the architecture figure), a number of domain-level devices (labeled with (D)) are providing services and can only be partially configured by the user (i.e. are deployed with restricted user access). Similarly, a number of services and devices are deployed globally (labeled G in the figure) for the entire testbed.

COSMOS includes three types of radio nodes:

  • large (rooftop installed "multi-sector base station" (BS))
  • medium (building-side-mounted or light-pole-mounted "microcellular BSs")
  • small (fixed or mobile).

Finally, the core cloud for the large testbed domain ( is split across two locations in NYC: uptown CU CRF data center and downtown NYU data center (at [32 AoA which is also one of the main national and international interconnect location) interconnected with the high-speed optical backbone.

Last modified 12 months ago Last modified on May 18, 2020, 12:32:50 PM

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