Showing posts with label Integrator Opencell. Show all posts
Showing posts with label Integrator Opencell. Show all posts

Thursday, 21 December 2017

CW Seminar on DAS vs Small Cells

I mentioned about the CW seminar in my earlier post here. The event is over so here are a few takeaways from the seminar.

The good news about CW Small Cells events is that David Chambers (ThinkSmallCell) does a very comprehensive summary. For this one, its available here.

For a limited time (for non-members), the presentations from the speakers is available on CW website here.

I wanted to highlight few takeaways and stats that were quoted during the seminar as follows:

  • The 5 challenges of deploying small cells: compelling event, capacity, complexity, coverage, cost
  • 90 operators now offer unlimited service with voice, SMS & Data
  • Due to European roaming charges having been scrapped, there is 300% growth in European roaming traffic since last year.
  • Average consumption is 1.9Gbytes/month forecast to be 15.8Gbytes by 2022. Finish operator Elisa is already running at an average of 18GB/month
  • Modern inbuilding systems are 2T2R with many older installation still using SISO.
  • 40% of the workforce will be freelancers, temps, independent contractors and solopreneurs by 2020 (Not sure if this is UK or worldwide figure)
  • 39% of millenials say they interact more with their smartphones than they do with theur significant others, parents, friends, children or co-workers
  • By the end of 2017, around 14000 co-working spaces will be in operation worldwide
  • 67% of people around the world use a personal device at work to some degree

I have highlighted Opencell's view on DAS vs Small Cells in the earlier post here. This Tweet below also shows the comparison points


Bob Slorach, from Wireless Infrastructure Group (WIG), drew some clear guidelines about building size, pointing to the needs of buildings between about 50000 to 300000 sq. ft. This represents a huge unmet demand of around 2 Billion sq. ft. in the UK alone.



As can be seen in the picture above, picocells can serve smaller venues while a 5 watt small cell (microcell) with distributed RF can satisfy the 100 - 300K sq. ft. venues. For bigger venues, a higher power unit would be required. It would also justify to have a neutral host solution so the costs could be distributed and coverage is available for everyone.

Adis Omeragic, Special Projects Manager at EE, shared his side of the story. While his slides are still not on the site (they are expected to be available), I have emnedded a tweet below.

Some of the points he made were, while passive DAS may no longer be used, active DAS will be around. Only about 5% of DAS deployments in the UK have all four operators connected as of today.

According to Adis, DAS displacement is slow because of lack of roadmap alignment between macros and small cells. Small cells upgrade path is very limited. DAS allows Carrier Aggregation, Multi-technology and multi-band capability, SON features which are more common in macros, etc.

Due to the new features like 4x4 MIMO and even Massive MIMO, things may start going in favour of small cells.

One final point that was discussed in the panel was whether VoWiFi is good enough so there is no longer a need for residential or enterprise femtocells.

While the panelists agreed that VoWifi is good enough for residential, it may not be good enough for enterprises. I disagree. If the enterprise has designed their WiFi networks properly, this may not be much of an issue.

There is other issue of the lack of devices and operators support for VoWiFi. As EE pointed out, they only support it for post-paid customers, on direct contract with them. So pre-paid, MVNO and partner customers wont benefit. Also, its supported in limited number of devices.

Monday, 20 November 2017

DAS vs Small Cells for In-building coverage


Small cells vs DAS has been a topic of discussion for a long time. ThinkSmallCell covered this topic back in 2014. I don't think things have changed much.

Recently I came across ClearSky and Opencell. They both have a slightly different approach to providing in-building coverage solutions. Instead of focusing on having neutral host small cells with MOCN or other network sharing approach, they act as neutral host providers responsible for integrating small cells from multiple operators within the building.


ThinkSmallCell has a detailed write-up of Opencell and Clearsky Technologies. What impressed me is the Opencell article saying (emphasis mine):
This isn’t a true neutral host where a single set of small cells is shared by all operators and routed through a central gateway. Each small cell is connected directly to its host operator – there is no shared gateway switch  through which all traffic is concentrated.
Instead they use Enterprise Small Cells to provide in-building cellular service from all four UK networks at a 75% lower price than DAS including basestations. Parallel sets of small cells are installed, one set for each operator. Typically a single dedicated LAN is used with a single separate fibre backhaul through the Internet. Each installation is designed, commissioned and maintained directly by the OpenCell team.
A 24/7 Data Centre with fault and performance monitoring service constantly tracks operation and identifies problems. We can remotely diagnose and fix issues, and will attend next day to fix or replace faulty hardware. We charge an initial setup fee and an ongoing operational support rate. There would also be a callout fee and additional cost for major changes, such as when the building is redeveloped, layout changed or new tenants are introduced.
It can be 75% cheaper to install enterprise small cells from multiple operators rather than install DAS. Again, I am sure there is a point till which it would make sense to do this. After that, it would be cheaper to have a DAS solution.


In couple of weeks, Cambridge Wireless is hosting a seminar on this topic, 'DAS and Enterprise Small Cells - Competition or Collaboration?'. I am hoping to hear more details about this.

In the meantime, if you would like to explore more about this topic, see the links below.