Hi, my name is Avril Salter and welcome to this short complimentary video. What we are going to do today is take a look at site planning. What I have done is taken an access point and using Velcro I have strapped it to the ceiling. I have powered on the access point. That access point does
not need to have Internet access for me to do my planning.
So before I do my site measurements, I always like to get a sense of what is operating in my frequency band. I’m going to take a quick look at my spectrum analyzer, and here you can see the access point that I have deployed called “HP Procurve” is the SSID. This access point is transmitting two different SSIDs. So both the “HP Procurve” and “Rogue 2” is the same access point.
Now I can also see that there are two neighboring access points. Let’s take a look at how much interference they are causing me. Yes, you can see that they’re fairly distanced away, so they shouldn’t affect my measurements too much until I get a bit closer to their location. I also want to take a look at what might be operating in my band. I can see that there is, so when I do my measurements I’m going to get some fluctuation. In fact, you can see that my signal strength is going up and down, due to the fact that there is other stuff happening in this frequency band.
That means when I get to my location where I want to record the signal strength and the data rate, I’ll need to pause just a minute to make sure that my system is stable and I can estimate what the data rate is for that location.
So now we’ve had a look at our spectrum analyzer, let’s go ahead and connect to our access point. I select this button here, and you can see my HP access point. I select this, and select Connect. You can see that I am now connected and as I mentioned there is no Internet connection, so I don’t need to be concerned with that.
I’m going to right-click this and select Status, and here you can see that I am very close to the access point. I am able to get 150 Mb/sec. Now, what I’m going to do now is start moving away from the access point. I’m going to be looking at my signal quality, and also my data rate. I have in my hand my building blueprints. As I walk away, I’m going to note the data rates and start writing those data rates down on my blueprint.
So, let’s start walking.
I’ve reached my first location, and you can see that my data rate has dropped. I’m going to note that data rate on my blueprint.
I’ve moved to my next destination, and you can see that my signal strength has dropped considerably. And you can see my data rate has also dropped. At 2 Mb/sec, I’ve really reached the edge parameter for my cell. I’ve closed a couple of doors behind me, and I’ve really dropped my signal and therefore dropped my data rate.
Again, I make another note on my blueprint of my data rate, then I’ll go back to my access point and we’ll start again.
We’re now back at my access point. My signal strength has gone back up, and we’re back at 150 Mb/sec. What I will do now is walk in a different direction, away from the access point, doing the same thing, writing down the data rates as I go. I’ll do this several times. Once I’ve done that I can literally put rings around the access point that indicate the areas where I get specific data rates. Then, I can use that information to determine my coverage plan, how many access points I need to get full coverage, and also my capacity plan – how many access points I will need to get the minimum data rate that is acceptable for my uses.
That concludes how we can do site measurements. Thank you for your time, and I hope that you’ve enjoyed this video.