We hosted an external company who performed (indoor) over-the-air measurements of our OpenAirInterface 5G NR profile.
Screenshot from an off-the-shelf UE connected to an OAI-based eNodeB in POWDER. For this test the eNodeB was an X310 USRP with a d430 compute node, running OpenAirInterface software in TDD mode, in the POWDER rooftop node on the Merrill Engineering Building. The UE was a Nexus-5 off-the-shelf smartphone.
B210 being calibrated.
Fixed-endpoint electronics being assembled.
Fixed endpoint with antenna panels.
Streetview of rooftop deployment. (POWDER antennas are the smaller ones on the right.)
News coverage of our first phase deployment:
More rooftop base station deployments.
High performance compute nodes being deployed.
A "halfstack" of "blades" for our Skylark massive MIMO base station.
Inside view of one of the blades showing the four Iris units, each with two radios. Each massive MIMO base station will have eight blades for a total of 64 radios.
More fixed endpoint deployments.
Screenshots (uplink and downlink) of a successful over-the-air test using srsLTE software on POWDER. For this test the UE hardware was a National Instruments B210 SDR attached to an omni Taoglas GSA.8841 antenna. The eNodeB was a National Instruments X310 SDR attached to a Commscope VVSSP-360S-F antenna.
Fixed-endpoint enclosure with antenna panels and experimental/control equipment.
Base station with multi-band antenna and broadband antenna in the back, and network and SDR equipment in enclosure.
Rooftop enclosures delivered.
Compute nodes delivered.
CWDM mux/demux equipment and ethernet switches installed.
Multi-band antenna cabling.
Compute nodes installed.
Base station with broadband antenna.
Fully populated fixed-endpoint enclosure (at temporary location).
Screenshot of basic over-the-air end-to-end testing between base station and fixed endpoint. The image shows a 5 MHz FFT centered at 2.45 GHz of a receiver running on a fixed endpoint, picking up a transmission from a base station. The transmitted signal was a 500 KHz wide channel of uniform random noise centered at 2.45 GHz. RX and TX were performed using GNU Radio, with transmission via an X310 driving an attached Keysight N6850A omni antenna, and reception on a B210 attached to an omni Taoglas GSA.8841 antenna. The units were spaced about 100 feet apart for this test. The X310 was paired with a Dell D430 rackmount server, connected via fiber (approximately 500 feet), while the B210 was paired with a directly connected Intel NUC.
Radio equipment from National Instruments arriving.
First rooftop enclosure installed on the roof of the Merrill Engineering Building.
First NI X310 in rooftop enclosure.
The POWDER platform featured in a LightReading article by Carol Wilson.
Our initial deployment will include fixed endpoints. I.e., endpoints at fixed locations with reasonable RF coverage to one or more rooftop base stations.
Each fixed endpoint will have two experimental SDRs and an SDR for spectrum monitoring. Fixed endpoints in coverage area of our massive MIMO equipment will also have an Iris radio.
The images on the left show a prototype fixed endpoint, in a lab environment and on a temporary mount for outdoor testing.
The POWDER platform was used for the Hands-On Experiences session at the recent ONAP Academic Summit in New York City.
The POWDER team worked with ONAP member organizations to instantiate an ONAP instance on the POWDER platform. This instance was used by approximately forty Summit attendees to explore aspects of the ONAP platform.
The POWDER team is working with ONAP member organizations to make an ONAP profile available to POWDER users.
ONAP is a project of Linux Foundation Networking.
To determine expected RF coverage in our campus deployment area, we performed measurements from various rooftop locations. Each measurement activity involved setting up transmitters on the target rooftop and then driving around campus to measure the received signal.
The photos on the left show an example rooftop transmitter setup, the vehicle receiver setup and a composite image (combining data from all measurement runs) of the received signal strength (at 2.5 GHz) along campus shuttle routes.
Our rooftop base stations will include a broadband omni-directional antenna as well as a multi-band antenna with 360 degree coverage in each band.
The photo on the right shows outdoor testing of the multi-band antenna.
As far as possible we will be using existing rooftop mounts, such as the Crown Castle mount shown in the photo on the left.
Our initial deployment will be on the University of Utah campus. We have been doing lots of site surveys which includes getting on tall buildings with nice views!
The photos on the right shows views towards the west and the east from the Social and Behavioral Science Building.
News coverage of the POWDER-RENEW launch event: