New wireless protocol: Nv2 in v5.0beta5

RouterOS General
1

In RouterOS v5.0beta5 there is a new wireless protocol Nv2 which is based on TDMA.

To make the connection using Nv2 on the AP side you need to select the wireless-protocol=nv2 and on the Station side you can also select wireless-protocol ‘nv2’ or ‘any’.
Some features are not ready yet for Nv2: no support WDS,Security,Virtual AP,some details in the registration table and status. We will optimize the Nv2 in the upcoming versions.

We would like to get some feedback from you how it is working on your wireless links. When posting, please include info on the distance of the link and settings that you have and latency.

When testing N link with Nv2 you can get approx 97Mbps UDP traffic and 94Mbs TCP traffic through RB711 in one direction using one chain.

WDS going to be fixed?
ARM devices and NV2 protocol
v7.1.2 is released!
2

Any documentation ? what does setting “nv2 nstreme 80211” in one row ? combination of this three or what..

3

more documentation will be available next week.
If you select that option all 3 in one row in the Station it means it will chose any from that list.

4

i really hope this is compatible with airmax… please please please.

5

hope this is compatible with airmax

I hope not ! I prefer things that Work.

Is Nv2 going to have any kind of Time Synch, or will it be just for the Outback like Airmax ?

6

nv2 is not compatible with Airmax.

nv2 is supported for all Atheros cards, except old AR5211 based, so in order to try it out it is not required to have 11n cards - just upgrade, set wireless-protocol=any on station (this will enable station to look for whatever protocol AP that is available with appropriate SSID), set wireless-protocol=nv2 on AP and you are ready to go. If something goes wrong change wireless-protocol on AP to nstreme/802.11 - whatever you were using before.

If “Time Synch” means some synchronization between APs, then no, nv2 does not support such feature yet. You can think of it as of improved nstreme. Its benefits are intended to come from removed polling overhead.

7

We’ve just done some testing on a 1.6km link, LOS. RB 433 on each side with R52n Cards. 22db Panel on 1 side and 22db Grid on the other. Only 1 chain

http://spreadsheets.google.com/ccc?key=0AjmCIPfvbjCKdFRpcVRWR0NuTnoxVURCUmU1azZtdFE&hl=en

We were bandwidth testing thru the routers with IP routing, We seem to have run into a issue/bug where we couldnt RX more than 33mbit which we are still looking into but so far NV2 is performing worse than Nstream.

Link signals are -72ish with 90+% CCQ

These results are not meant to show the max it can do but merely show the different between the protocols

8

hi all, glad to see new feaures in router os…

what is the advantages of using TDMA in router os?

9

Now tested is horrible :frowning: .

WDS nstreme work very well with one chain switch to station and MPLS work little slower, but when go to Nv2 is disaster TX/Rx rate don’t want to go more that 54/54Mbps and when traffic go link disconnected.
Also without traffic ping is 5-6ms with traffic don’t know disconnected, old setting have 0ms ping without traffic.


Go back to nstreme WDS and have TX/RX 150-HT/150-HT and good speed.

Tested on two x86 distance 400m one chain card is both side R52n.

10

That is a brilliant feature, maybe the devs could think of a better name so it is self explanatory. Maybe evem putting a comma between them e.g. Nv2, Nstreme, 802.11

11

My results on testbed, RB800 - 1333MHz, x86 1333MHz, both R52N + 5GHZ a/n,

TWO CHAINS + EXTENSION CHANNEL
802.11                       @270mbit throughtput 194mbit     @avg 12ms latency
nv2                           @270mbit throughtput 211mbit  @avg 8ms latency 
nv2 + nstreme             @270mbit throughtput 217mbit    @avg 6ms latency
nv2 + nstreme + 80211 @270mbit throughtput 190,4Mbit  @avg 10ms latency 

ONE CHAIN + EXTENSION CHANNEL
802.11                       @135mbit throughtput 110mbit     @avg 20ms latency
nv2                           @135mbit throughtput 108mbit     @avg 16ms latency 
nv2 + nstreme             @135mbit throughtput 108.3mbit    @avg 15ms latency
nv2 + nstreme + 80211 @135mbit throughtput 108,4Mbit  @avg 16ms latency
12

Can you please post wireless config and link information? Distance, Signal etc?

From your post it seems that NV2 only made a difference in a Dual Chain setup and even then a tiny difference

13

This is great news. My long time wish of stations autoselecting nstreme on/off
has come true :smiley:

14

i test link on 6 km distance , 433ah bords and r52n cards with one chain and 23 grid antenas . so i recive up to 69mb tcp and 94mb udp traffic , latency is leap from 3ms ,4ms ~ to 20~35 , link stability is wery bad ! .. what time is going out – link stability spoil and spoil and some time latency reach up to ~3000ms.

15

Let’s be scientific and not fan boy

Quite right.

It’s Sour Grapes with me:-
I bought a load of Airmax when it was released, and at that time it did not work, and neither could the kit be used for CPE on non-Airmax either.

There was no way to get the money back, or to make it work for about 6 months, which made me slightly unhappy.

16

Seriously? Whats next? Wanting Motorola Canopy compatibility?

17

Anyone have tested on x86 on 802.11n link ?
I can’t get it work properly have low speed and disconnect, on some link WDS+nstreme work ok.
Also after changing some parameter on wireless interface router restart.

18

Sorry to hijack the thread, but the comment on compatability is right. Mikrotik working with Ubiquiti is so much stronger than proprietary protocols. The battle isn’t between Mikrotik and UBNT but between wireless and AT&T or comcast or whatever else competes with wireless. Standards create markets. Proprietary limits markets. Every proprietary non-wireless protocol was swept away by ethernet regardless of the advantages and the networking world advanced. Standard means more production of the base chipsets and lower prices means more penetration. Please work with UBNT and the other vendors we’ll keep using Mikrotik for the great routing and features that are beyond what UBNT is offering and we’ll grow faster and by more!

19

uldis, will we be able to assign time slots to individual clients using this TDMA system?
As in, will I be able to assign more important clients a large % of the air time so they get good performance even when the link is under high load?

20

Hello

is TDMA support a high number of cpe clients?
Nstreame is good for 60 +/- how bout this new protocol?

Thanks