Architecture Naming

Architecture Naming

By CWNP On 12/28/2007 - 11 Comments

There are two distinct types of architectures in today's WLAN infrastructures.  Each goes by several different names.  Today's WLAN newcomers can be easily confused by having several names for the same thing as well as trying to understand the nuance between each vendor's implementation.  I'd like to clarify some common terminolgy.

First, we need some plain old definitions:

Single Channel Architecture (SCA) – A WLAN architecture where uplink and downlink transmissions are coordinated by a WLAN Controller on a single 802.11 channel in such a manner that the effects of co-channel and adjacent channel interference are minimized.

Multiple Channel Architecture (MCA) – A WLAN architecture where three or more channels are used in a tiled pattern within a frequency band (2.4 or 5 GHz) for the purpose of minimizing co-channel and adjacent channel interference.   This is often referred to as “channel reuse” or “micro-cell” architecture.

Channel Stacking / Channel Spanning / Channel Blankets™– When a Single Channel Architecture (SCA) is used, WLANs may be co-located in the same physical area on different 802.11 channels for the purpose of high-density / high-capacity client deployments.  Scalability is accomplished through adding additional coordinated channels in the same physical space.

Virtual BSSID / Virtual Cell – When 2 or more access points coordinated by a WLAN Controller appear to be the same access point (have the same BSSID).

These names are some that we made up and some that we borrowed from vendor partners.  These definitions are our own and are likely missing some of the discriptive marketing language that you would expect from vendors trying to sell their warez.  They are not considered perfect, but are generally accepted as accurate.

There are currently only two manufacturers who make SCA equipment: Meru Networks and Extricom.  Both OEM to other vendors (e.g. Meru > Foundry and Extricom > Belden).  With SCA equipment, scalability comes as a result of stacking/spanning/blanketing multiple channels in the same physical area by using one or more APs rather than reusing channels in a tiling pattern like MCA does.  MCA is where the market has been for a number of years; deploying APs on different channels in a tile-like pattern to avoid as much co-channel and adjacent channel interference as possible.

"Which is better?" is an on-going industry debate that is often more volatile than discussing politics or religion.  

There are other architectures on the market, but these two are currently the most dominent.  Others include: Arrays (i.e. Xirrus), Cooperative Control (Aerohive), and Mesh (Firetide, Tropos, Strix, etc).  Some vendors support multiple architectures.  For example, Cisco, Aruba, Motorola, Colubris, Trapeze, and Bluesocket all support MCA and Mesh.  Meru supports SCA and Mesh.

More or less, there's an architecture for every occassion, but within the more dominent architectures (MCA and SCA), we thought it important to sort out some details.

11 Responses to Architecture Naming

Subscribe by Email
Jaelyn Cyrus Says:
03/02/2018 at 02:08am
The Romanesque shape is all inclusive by the aptitude of its immensely superb, its thick parcels, around curves, great docks, crotch vaults, super towers and decorative arcading. cheap custom essays. Each and every development has obviously characterized types and that they are in numerous occasions of extremely common, hilter kilter design so as that the last visual appeal is thought about one of straightforwardness in evaluation with the Gothic homes that have been to remain with.

Anna Shetty Says:
02/25/2018 at 23:52pm
Through your pen I found the problem up interesting! I believe there are many other people who are interested in them just like me! Thanks your shared! I hope you will continue to have similar posts to share with everyone! I believe a lot of people will be surprised to read this article!
play cool math games

Albina muro Says:
02/22/2018 at 03:35am
That appears to be excellent however i am still not too sure that I like it. At any rate will look far more into it and decide personally!
buy real fb comments

Albina muro Says:
02/22/2018 at 02:18am
I really like your writing style, great information, thankyou for posting.

Garnet man Says:
02/21/2018 at 15:08pm
Architecture Name snot a hard to do and you can do it easily if you work on it. I’ve tried it and it works very well for me.

sidd yadav Says:
01/06/2018 at 10:14am
It is improve the site steam wallet code that is the best thing the place.

03/29/2008 at 06:08am
Fine Contemporary Furniture & Flooring - Manufacturer

We are a manufacturer of fine contemporary furniture and floorings.

Our customers include home builders, hotels, resorts, furniture wholesalers, importers, retailers, architects, interior designers and individual customers.

We manufacture contemporary furniture and flooring primarily in teak, hardwoods, natural and synthetic rattan/wicker, water hyacinth, bamboo, leather, stainless steel and various metals.

We can custom manufacture to our customers’ designs and specifications. Sample sets can be produced at short notice.

Due to the availability of quality raw materials and skilled workmanship, our prices are consistently lower than our competitors, comparing product material, quality and finish.

No compromise in workmanship and quality of materials, ensuring life long durability that will always come with an Indochine product.

Our markets include the USA, Canada, Japan, UK and the EU.

Indochine Decor Limited Partnership
32 - 32/2, Moo 2, Tambon Onkang,
Amphur Mae On, Chiangmai 50130,
Tel/Fax : 66-53-859125 66-53-859125, Thailand ( 66) (GMT 7:00) Bangkok, Thailand
Mobile : 66-86-9238228 66-89-7558338 66-85-7198932 66-85-7198931, Thailand ( 66)
Skype Address : indochinedecor
Fine Contemporary Furniture and Flooring - Manufacturer
Get used to quality.

01/15/2008 at 15:46pm
:-)) I agree, Devin - the debate over SCA or MCA can be fierce - and dangerous to one's self. I see benefits in both architectures, depending upon the application and environment. Meru has some pretty impressive success stories, as does Cisco and all the other MCA vendors.
What IS your personal opinion, please -

01/09/2008 at 22:08pm
I just want to know what your opinion as one of wireless expert. If you don't mind, please send your opinion to my email :-) mrdlnf at linuxmail dot org


01/07/2008 at 20:41pm
That's a discussion not unlike religion and politics. Everyone has their preferences, but saying them in public may require that you dodge flying objects. :)

01/07/2008 at 20:28pm
Interesting, but based on your experience and personal opinion, which is better between SCA and MCA?


<< prev - comments page 1 of 1 - next >>

Leave a Reply

Please login or sign-up to add your comment.
Success Stories

I literally just came out of the testing centre having taken the CWDP exam. The certification process opened my mind to different techniques and solutions. This knowledge can only broaden your perspective. Great job, CWNP, you have a great thing going on here.

Read More

Working through the CWNP coursework and certifications helped not only to deepen my technical knowledge and understanding, but also it boosted my confidence. The hard work it took to earn my CWNE has been rewarding in so many ways.

Read More

I want to commend you and all at CWNP for having a great organization. You really 'raise the bar' on knowing Wi-Fi well. I have learned a ton of information that is helping my job experience and personal career goals, because of my CWAP/CWDP/CWSP studies. Kudos to all at CWNP.

Read More