Writings from Justin Wilson
Some photos from a Siklu 80GHZ deployment in Downtown Indianapolis, Indiana. This was deployed by On-Ramp Indiana (https://www.ori.net). The problem being solved is moving video files around a network in order to get it to smart screens and projectors. This is a very urban area and wireless was pretty much the only option to get from building to building.
Siklu 80GHZ was on the shortlist due to the distances involved. Another consideration was the footprint of the equipment. The equipment had to be as low profile as possible.
Another needed aspect of this network was the ability to move traffic around at layer 2. Not all traffic is IP based in this type of network.
Equipment used
Ether Haul 1200FX
https://www.siklu.com/product/etherhaul-kilo-series/
Some technical Details
As you can see traffic is reasonably consistent in the 80-100 meg range. We needed a solution that did not slow down due to interference. A possible 10’s of thousands of visitors to this attraction in a weekend, reliability and performance were critical. When this was installed we did not know about COVID, but this is an attraction people can enjoy from their cars and social distancing. This use added to the visibility of this attraction, thus making the reliability even more crucial.
Articles about the finished product
https://www.wthr.com/article/news/local/monument-circle-get-new-light-show-time-holidays/531-ef1819ca-5f27-4886-9283-17e481c33f39
On-Ramp Indiana Contacts www.ori.net 317.774.2100
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Telephone news
https://www.engadget.com/2020-03-31-fcc-stir-shaken-june-30-2021.html
The FCC announced today all carriers and phone companies must adopt the STIR/SHAKEN protocol by June 30th, 2021. The regulatory requirement is designed to combat robocalls, specifically those that try to hide their phone numbers by allowing carriers to authenticate caller IDs.
Fcc is expected to outline it’s vision for the 6GHZ unlicensed spectrum
The FCC for months has been considering exactly how to release fully 1,200MHz of spectrum in the 6GHz band for commercial use. <most likely will be for WI-FI>
Comcast talks about network usage
https://venturebeat.com/2020/03/30/comcast-details-what-the-coronavirus-has-done-to-network-traffic/?
Some info on the cambium PTP 550 Data Rates
“Downlink Max Rate” specifies the maximum downlink MCS value that the Rate Adapt algorithm will choose.
MCS values range for data from MCS 9 to MCS 1 for one or two Spatial Streams (Single Stream and Dual Stream respectively). A higher MCS value (e.g. MCS 9) carries more data, but requires more link budget / stronger radio signal. Thus, MCS 9 provides the most data, but the least robust link (i.e. greatest chance data can be lost) and MCS 1 provides the least data, but the most robust link (i.e. least change data can be lost).
DS MCS provide two streams of independent data over the two transmit chains while SS MCS provide one stream of data over both transmit chains.
Setting “Uplink Max Rate” to a DS MCS 9 – DS MCS 1 value will allow this MCS and all lower dual stream MCS values to be used along with all similar or lower single stream MCS values. For example, choosing DS MCS 8 means that DS MCS 8 – DS MCS 1 and SS MCS 8 – SS MCS 1 will be used in the Rate Adapt algorithm. Setting “Uplink Max Rate” to an SS MCS 7 – SS MCS 1 value will allow this and all lower single stream MCS values.
Rates Highest to lowest
DS MCS9 – 256-QAM 5/6
DS MCS8 – 256-QAM 3/4
DS MCS7 – 64-QAM 5/6
DS MCS6 – 64-QAM 3/4
DS MCS5 – 64-QAM 2/3
DS MCS4 – 16-QAM 3/4
DS MCS3 – 16-QAM 3/4
DS MCS2 – QPSK 3/4
DS MCS1 – QPSK 1/2
SS MCS9 – 256-QAM 5/6
SS MCS8 – 256-QAM 3/4
SS MCS7 – 64-QAM 5/6
SS MCS6 – 64-QAM 3/4
SS MCS5 – 64 QAM 2/3
SS MCS4 – 16-QAM-3/4
SS MCS3 – 16-QAM 1/2
SS MCS2- QPSk3/4
SS MCS1 – QPSK 1/2
MCS\Rx Sensitivity 20 MHz 40 MHz 80 MHz
Lowest MCS -90 dBm -87 dBm -83 dBm
Highest MCS . -66 dBm -62 dBm -59 dBm