Density and Planning

Just wondering is anyone using cnWave in a dense deployment? With the 15 max per sector, and 4 total channels (and golay/polarity), and the fact the beamforming and signal drop off so fast helps to minimize self-interference between adjacent sites…

If I’ve got a current site with say 120 clients connected, is it as simple as dropping 4 v5000 DNs off and moving those 120 customers over, with 1 DN per channel? Or is there a more efficient way of doing this with golay/polarity?

I know optimally I’d want to break up the site into micro-nodes but that would be a capital/opex expense that we’re not seeing as possible soon.


As a radio network planner, there are a couple of questions that you need to answer to qualify your plan. The v5000 has 2 140 degree sectors, so co-locating 4 of them is bound to be problematic. Since the channels are 2 GHz wide, I’m quite sure that the v1000 or v3000 does not have more than 25 dB adjacent channel rejection, which will be the limiting factor in your site’s performance. For a moment, suppose you did 4 x v5000 on a location:
This is 4 x v5000 units. The max range for v5000 to v1000 connection is ~200m LOS or less for 99.99% availability @ MCS12.
Here’s the coverage of a single v5000 (the darker orange 280 degree area):
I cannot imagine the situation where there would be 120 subscribers within this coverage area, so the need for more than a single v5000 is very rare.
A possible solution to provide service to 4 v5000 units, using all 8 sectors to provide service to about 100 subscribers using v1000 connection nodes. The green lines are the mesh links between the v5000 units, each link has more than 99.99% availability @ 500 Mb/s minimum over each link. The higher the throughput required on the mesh, the better the link quality needs to be. All of these v5000 would be on the same channel, using even and odd polarity.

The way to increase the range to include more potential subscribers is to use v3000 units as the connection node, which has about 400m range to every v5000. This would require that you use a v3000 as the meshing link to the serving v5000, then use the SFP+ port on the v3000 and co-located v5000. This is a much more complex design, which will require the use of even, odd, and hybrid polarity across the network.

Hope this helps a bit with your cnWave decision.

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Ya, i was more looking at the possibility of planning based on the V3000 on the subscriber side which puts the size of the site larger than the 200m range 500-1km is more like the existing site locations… which ends up putting us above the 60 customers per site.

Whats the advantage of going V5000-3000-5000 vs 5000-5000 just the slightly longer distance between units?

Forgot to ask is the V5000-V5000 range much shorter than the V1000 range? When i tried to mesh in link planner 2 units at ~200m it barely got 300mbps at 70% uptime.

It’s shorter because you generally need more throughput over the v5000 to v5000 links than a v5000 to any CN, so you have to run higher modulation levels, higher SNR, and thus, shorter range.