October 14, 2019
Choosing the Right In-building Wireless Solution for My Building
Step 1: Realizing that you need an in-building wireless system (IBW) in your building. COMPLETE!
Step 2: Deciding which IBW solution you need.
With multiple IBW options to choose from, it can be overwhelming trying to understand which one would best fit your building. DAS or D-RAN? What’s the difference between the two? Which one should I choose?
We made it easy for you.
Key Differences Between DAS and DRAN
|Head-End||Higher space, power & cooling requirements.||Lower space, power & cooling requirements.|
|IDF-Remote||Lower space, power & cooling requirements.||Higher space, power & cooling requirements; likely no battery back-up|
|Fiber||~2-4 strands to each remote node typical||~16-32+ strands to each radio node typical|
|Cost||Higher for venues with low user/capacity densityLower for venues with high user/capacity density||*Lower for venues with low user/capacity densityHigher for venues with high user/capacity density|
|Neutral Host||Yes. Better when deploying >2 operators and/or >2 frequency bands||Yes. Better when deploying 1-2 operators and/or 1-2 frequency bands|
|Capacity||Generally fewer sectors, but greater amount of spectrum.||Generally more sectors, but a smaller amount of spectrum.|
|Expandability||Easier to add bands/operators.||Space, power, cooling constraints may limit capability|
*assumes local, ac power available
DAS has carrier equipment and radios centrally located in the headend which feeds into third-party DAS equipment that shares remote amplifiers distributed throughout the facility.
D-RAN removes the third-party equipment and distributes the carrier radios throughout the facility in place of the third-party radios.
The biggest difference between DAS & D-RAN is where the majority of the carrier-specific equipment is located, (i.e., headend and/or IDF).
As a venue owner you want to ask yourself, “What kind of user density and data traffic capacity does my venue require? Do I have the right space available to accommodate either a DAS or DRAN solution? Do I have and/or am I willing to give up a large central “data center” type room? Is my IDF/riser closet space and power limited?
Small Cell vs. DAS: Which is Right for My Property?