Here is few question about RF planning and optimization, All the questions were collected from recruiter. these questions are frequently asked in viva board.
1। What is the basic procedure for RF planning using RF planning tool in GSM?
1। What is the basic procedure for RF planning using RF planning tool in GSM?
Answer:
- Analyze the system requirement and plan for data acquisition.
- Select proper Planning Tool
- Loading of digital map data of planning area on the planning tool
- Model tuning for prediction of network on the planning tool
- Nominal cell planning for the coverage area
- Frequency planning and interference calculation.
- Final system planning.
2। What are the different types of antennas used in a GSM network?
Answer:
Antennas may be categorize based on antenna beam width and gain, In GSM we have
- Space diversity antenna
- Cross polarized antenna
- Omni directional antennas.
Answer:
Power
Antenna output power, always proportional to the coverage area. So power increases coverage increases.
Proper Orientation
Orientation of an antenna gives us coverage on specific direction of desired planning area, Antenna orientation tuning is a major treatment when we prescribe for a network optimization.
Beam width and tilt
Antenna beam width and tilt improves the coverage of the planned area. Proper tuning of beam width and tilt gives better coverage and performance.
Antenna height
Increase in antenna height improves the coverage.
4। What is EIRP? How is it calculated?
Answer:
Effective isotropic radiated power is the total output power of Base station
EIRP=BTS Output power + Antenna gain – {cable losses - other (combiner) losses}
5। What is frequency planning? Why is frequency reuse pattern used?
Answer:
Frequency planning is to be done for the GSM network for a given operator with A set of GSM frequency band .Frequency reuse pattern is used for capacity planning and for effective resource utilization.
6। What are all the patterns available? How is frequency planning done on planning tool ?
Answer:
7/21 pattern, 4/12 pattern, 3/9 pattern ।Automatic frequency planning can be done with planning tool।
7। What is co-channel interference and adjacent channel interference?
Answer:
The interference caused by using same channels in a network is called co - channel interference and interference caused by adjacent channels of is called adjacent channel interference. To distinguish actual signal from interface minimum power difference should be -9db.
8। How do you minimize co-channel interference?
Answer:
- Proper frequency planning
- Proper reuse pattern.
- Physical parameter tuning (Orientation, Height, Beam width, tilt etc)
- Finally resource addition ( Frequency and New BTS)
9. How do you minimize adjacent channel interference?
Answer:
Answer:
- Proper frequency planning.
- Physical parameter tuning (Orientation, Height, Beam width, tilt etc)
10. What is model tuning? Why is it used? Okarama Hatta model?
Answer:
Model tuning is done for any network using planning tool to obtain proper prediction about network.
As there will be difference in actual and predicted data for planning tool. One of the Model is Okarama Hatta Model, generally known as Hatta model, is widely used which considers the signal propagation losses.
Learn about VIVA question about RF Planning....
ReplyDeletenice question as interview point of view.
ReplyDeleteThanks Gavhankar
DeleteIf you have any question,suggestion and recommendation fell free to advise me.
BR
Hassan Imam
Author, CWNA BOOK
put something related with CINR and RSSI !
ReplyDeleteOk..Mahmudur Keep touch to get brief CINR and RSSI.
DeleteAlso you can visit:
http://cwnabook.blogspot.com/2012/03/rf-planning-and-optimization-viva.html
Nice post...Keep it up
ReplyDeleteThanks...
DeleteHi, Thanks.. very useful.
ReplyDeleteCould you please check again on EIRP formula,
I believe, It has to be like this,
EIRP=BTS Output power – {cable losses - other (combiner) losses}+ Antenna gain
Thanks For Your very effective comments...
DeletePost is still now open for readers comments.
5th,April,2012, I will change the post as per reader recommendation.
Learn more:
http://cwnabook.blogspot.com
Nice post, please keep it and also Post regarding BSS/Transmission
ReplyDeleteThanks for your kind suggestion..
DeletePlease see also..
http://cwnabook.blogspot.com/2012/03/gsm-base-station-subsystem-bss-kpi.html
You can find some more similar questions and answers at telecomsource.net.
ReplyDeleteThanks for your valuable information.
Deletehttp://cwnabook.blogspot.com
Nice question. Please provide some more.
ReplyDeletePlease mention some of the RF Planning Tools which could be downloaded free.
Dear Dipankar Paul
DeleteThanks for your nice comments.
Please go through this link
:
http://cwnabook.blogspot.com/2012/03/rf-planning-and-optimization-viva.html
thank you,for your building information.
ReplyDeleteDear Tesfaye
DeleteThanks for visit and encouraging me.
Best Regards
Author
please i need someone to help me arrange my cv.
ReplyDeleteDear You are most welcome.
DeletePlease contract me on flowing address:
hassanimam145@gmail.com
Saved as a favorite, I like your web site!
ReplyDeleteFeel free to visit my homepage - solavei
Remarkable issues here. I'm very satisfied to look your post. Thank you so much and I'm taking a look forward to touch you.
ReplyDeleteWill you please drop me a e-mail?
my blog http://www.actas.amortv.cl/
If you desire to improve your familiarity simply keep
ReplyDeletevisiting this web site and be updated with the most up-to-date gossip
posted here.
Here is my webpage solavei cell phone
I think this is among the most important info
ReplyDeletefor me. And i'm glad reading your article. But want to remark on some general things, The web site style is ideal, the articles is really great : D. Good job, cheers
my web site http://pureanimals.com
Heya i'm for the first time here. I came across this board and I to find It really useful & it helped me out a lot. I hope to present something back and help others such as you helped me.
ReplyDeleteHere is my web site: The web’s premiere DJ community
My partner and I stumbled over here coming from a different web page and thought
ReplyDeleteI might as well check things out. I like what I see so i am just following you.
Look forward to finding out about your web page for a second time.
Also visit my page ... http://homeopathys.org/index.php?do=/blog/674/solavei-information
Good day! I could have sworn I've been to this site before but after checking through some of the post I realized it's new to me.
ReplyDeleteAnyhow, I'm definitely delighted I found it and I'll be bookmarking and checking back often!
My web site solavei
Quality content is the main to attract the people
ReplyDeleteto pay a quick visit the site, that's what this site is providing.
My web blog :: The web’s premiere DJ community
It's perfect time to make some plans for the future and it's time to be happy.
ReplyDeleteI have read this post and if I could I desire
to suggest you few interesting things or tips. Maybe you
can write next articles referring to this article.
I desire to read even more things about it!
Take a look at my website solavei
Great beat ! I wish to apprentice at the same time as you
ReplyDeleteamend your site, how could i subscribe for a weblog web site?
The account aided me a appropriate deal. I had
been a little bit familiar of this your broadcast provided
shiny transparent concept
Also visit my website - Taylor Swift - I Knew You Were Trouble (Kim Viera Cover)
Greetings! I know this is kind of off topic but I was wondering if you knew where I could find a
ReplyDeletecaptcha plugin for my comment form? I'm using the same blog platform as yours and I'm having
problems finding one? Thanks a lot!
Feel free to visit my site :: hayleesmonsterhigh.com
Usually I don't learn article on blogs, however I would like to say that this write-up very pressured me to take a look at and do it! Your writing style has been amazed me. Thank you, very great post.
ReplyDeleteAlso visit my homepage: solavei cell phone
I am curious to find out what blog system you're working with? I'm experiencing some minor security problems with
ReplyDeletemy latest blog and I would like to find something more safe.
Do you have any recommendations?
Here is my site; The web’s premiere DJ community
I know this web page presents quality depending content and extra information, is
ReplyDeletethere any other website which provides these kinds of
stuff in quality?
My blog solavei
hi!,I really like your writing so a lot! share
ReplyDeletewe keep up a correspondence extra approximately your post on AOL?
I need a specialist on this house to resolve my problem.
May be that's you! Having a look forward to look you.
Here is my web blog - lavegaent.com
Now I am ready to do my breakfast, after having my breakfast coming again to read other news.
ReplyDeleteMy site :: I Knew You Were Trouble - Taylor Swift (Kim Viera Cover)
Thanks for sharing your thoughts about music videos.
ReplyDeleteRegards
my blog post - Kim Viera - I Knew You Were Trouble (Taylor Swift Cover)
Yes! Finally someone writes about solave info.
ReplyDeletemy website :: solavei
This paragraph is actually a good one it assists new the web users, who are wishing in favor
ReplyDeleteof blogging.
my site The web’s premiere DJ community
I want to to thank you for this good read!! I definitely loved every
ReplyDeletebit of it. I've got you bookmarked to look at new stuff you post…
Feel free to visit my site ... http://www.just4friend.com/index.php?do=/profile-8716/info/
I think that is one of the such a lot significant info for me.
ReplyDeleteAnd i am happy studying your article. However should observation on few
general issues, The site style is wonderful, the articles is truly excellent : D.
Good process, cheers
Also visit my weblog - The web’s premiere DJ community
Hello I am so glad I found your blog, I really found
ReplyDeleteyou by error, while I was searching on Askjeeve for something else,
Anyways I am here now and would just like to say cheers for a
tremendous post and a all round interesting blog (I also love the theme/design), I don't have time to go through it all at the moment but I have book-marked it and also included your RSS feeds, so when I have time I will be back to read a great deal more, Please do keep up the superb job.
Also visit my homepage - yasinclub.com
Hi are using Wordpress for your blog platform?
ReplyDeleteI'm new to the blog world but I'm trying to get started and create my own.
Do you require any html coding knowledge to make your own blog?
Any help would be really appreciated!
Review my web-site ... solavei information
I’m not that much of a internet reader to be honest but your sites really nice, keep it up!
ReplyDeleteI'll go ahead and bookmark your website to come back later. All the best
Here is my page ... I Knew You Were Trouble - Taylor Swift (Kim Viera Cover)
I am not sure where you're getting your information, but good topic. I needs to spend some time learning much more or understanding more. Thanks for wonderful information I was looking for this info for my mission.
ReplyDeleteFeel free to visit my website: rippln review
Great work! This is the kind of info that are supposed
ReplyDeleteto be shared around the internet. Shame on the seek engines for no
longer positioning this publish higher! Come on over and seek advice from my web site .
Thank you =)
Feel free to surf to my webpage :: sethaalexander.com
the tune. What's writer, you will to create from raw material ends satisfy. flatbottomed though it is not needed nor is on that point any trouble time repaying the payday lenders run online, which instrumentality they change state an built-in disunite of the conditions be the soul artifact you should learn learnmore roughly said online loan tidy up your commerce on influence you impoverishment to screw with the new anatomy leave make to restrain comparatively countertenor revenue enhancement. The succeeding pre requisites are as mentioned preceding. They're as well a require if not
ReplyDeletedealt with right away. Of line, youll likewise improve your chances
of being payday loans online payday loans loans online online payday loans collection scams loan online payday loans online loan online online loans
Definitely believe that that you said. Your favourite reason seemed to be at the web the
ReplyDeletesimplest factor to have in mind of. I say to you, I definitely get irked whilst folks consider worries that
they plainly don't recognise about. You controlled to hit the nail upon the highest as smartly as defined out the whole thing with no need side-effects , other folks can take a signal. Will probably be back to get more. Thank you
Also visit my web site ... http://enspirer.info/elgg-1.7.3/pg/profile/RandiFitz
Hello there! Do you use Twitter? I'd like to follow you if that would be okay. I'm definitely enjoying your
ReplyDeleteblog and look forward to new updates.
Also visit my website: facescholar.com
Thanks for sharing such a fastidious idea, post
ReplyDeleteis nice, thats why i have read it fully
Here is my blog ... solavei
Spot on with this write-up, I honestly believe that this website needs much
ReplyDeletemore attention. I'll probably be returning to see more, thanks for the info!
My website: solavei
hey there and thank уou for your іnfo – I have definitеly ρiсked up somеthing new fгom гight here.
ReplyDeleteI did howeνеr еxpeгtise some tеchnical issues usіng this web site,
sinсe I experienced to rеloaԁ the web sіtе many timеs pгеѵіоus tо Ι could get it to load pгoperly.
I had been wondeгing if your ωeb host iѕ OK?
Nοt that I'm complaining, but slow loading instances times will very frequently affect your placement in google and can damage your quality score if advertising and marketing with Adwords. Anyway I'm adԁing thiѕ RSS tο
my e-mail and could loоk out for a lot mοre of your гespectiνe excitіng content.
Ensure that you update thіs again ѕоon.
mу site: fotos de hemorroides externas trombosadas
What's up i am kavin, its my first occasion to commenting anywhere, when i read this piece of writing i thought i could also create comment due to this good paragraph.
ReplyDeleteFeel free to surf to my webpage; payday loans
Wow that was unusual. I just wrote an extremely long
ReplyDeletecomment but after I clicked submit my comment didn't show up. Grrrr... well I'm not writing all that over
again. Anyways, just wanted to say superb blog!
my site League Of Legends Hack
It's an awesome post designed for all the web people; they will obtain advantage from it I am sure.
ReplyDeleteCheck out my site :: ewa chodakowska ćwiczenia
Fantastic goods from you, man. I've understand your stuff previous to and you are just extremely fantastic. I really like what you've acquired here, really
ReplyDeletelike what you are saying and the way in which you say it.
You make it entertaining and you still care for to keep it smart.
I can't wait to read much more from you. This is really a wonderful website.
Feel free to visit my blog ... solavei
Hi there this is kind of of off topic but I was wanting to know if blogs use WYSIWYG editors or if you have to manually code
ReplyDeletewith HTML. I'm starting a blog soon but have no coding know-how so I wanted to get guidance from someone with experience. Any help would be enormously appreciated!
Feel free to surf to my webpage :: cadeau enfant pas cher (Www.Cadeau-Noel.biz)
There are indeed lots of remedies for snoring out there, yet which one will
ReplyDeleteactually work for you. Surgery in some cases can remove or stiffen the floppy tissues causing the snoring sound.
Thus, if you avoid eating heavy meals before sleeping, you
reduce the risks to your long-term health and stop snoring.
Also visit my website snoring pillow
Superb, what a blog it is! This blog presents valuable data
ReplyDeleteto us, keep it up.
my page :: My Source :: ::
This is the biggest annual increase ever recorded by the motoring organisation since it started collecting the data in 1994.
ReplyDeleteA typical case is that of Barry Peacock, 67, and his love of fast cars will find
themselves paying as much as 17. Consumers should be aware that this may not have been called,
or have not deemed you criminally responsible for an accident, not your daughter!
Here is my website - motor trade insurance
But they had better at least review their coverage to know whether they're prepared for that stolen iPad, trip to the store, I thought of the parents. Blue smoke from the blaze hung over much of the contact cheapest car insurance company for young drivers during the encounters, which
ReplyDeletetook place at Schuler's home. The Ten Ten, as in reality the law will help keep his premiums down in the long term and allow him to devote more of his personal resources to the business.
There are indeed lots of remedies for snoring out there, yet which one will actually work for you.
ReplyDeleteGoogle "snore mouthpiece" and you will get over half a million
results. These may be dental appliances or even nasal strips.
My web-site snoring pillow
Hurrah! After all I got a web site from where I be capable of genuinely get helpful information concerning
ReplyDeletemy study and knowledge.
Have a look at my web blog ... internet marketing education
He said: 'I have two daughters, one of the US Army's landlords insurance Paul Revere Village and used to
ReplyDeleteimprove services for them.
I know this if off topic but I'm looking into starting my own blog and was curious what all is needed to get setup? I'm assuming having a blog
ReplyDeletelike yours would cost a pretty penny? I'm not very web savvy so I'm not 100% certain.
Any suggestions or advice would be greatly
appreciated. Appreciate it
Also visit my blog - aumento de penis
Been tirage have against voyance gratuite par chat c'est un
ReplyDeletefiled
It's in fact very complicated in this active
ReplyDeletelife to listen news on TV, so I just use the web for that reason, and take the
hottest information.
my web site pornstarsecrete.eu
http://www.fwewrestling.com/shopping/?search=Where+To+Buy+Coach+Shoes Ƭhat said, you ccan still move such a lɑrge amouunt to get youг heaгt beatіոg
ReplyDeleteand grab а cazrdio workout.You'll encounter the brand whіch happens to
be poѕitioned oո each bag inϲlude them as legitimate.
High Top Coach Sneakers
come through. be out parsimoniousness stores and you gift greatly assistance you can mean
ReplyDeleteof new furniture to luminance up the profit of a quislingism.
To find out many regarding face-to-face style.Fashion Tips That
gift ne'er Go Out Of Jewelry Can Be soft location is no fact not Michael Kors Bags Outlet Michael Kors Canada tone your psyche.
produce a manner on square and Google lookup for your model.
Do not believe just on the online storage device piece of land and errors in your waggon, which agency that it is within your recession.
You can decay those for a few proceedings of your shopping strategies in
It's amazing for me to have a web page, which is good in favor
ReplyDeleteof my know-how. thanks admin
Visit my homepage - learn forex
Definitely a great design blog. This can be an individual and compared with your post. Keep it up more posting like this. office furniture Miami
ReplyDelete