Archive for April, 2010

Part 2: M2M cellular devices: What are they and who are the players?

Friday, April 30th, 2010 by M2M Expert

Who are the players?

In Part 1 of this series we discussed the basics of M2M cellular devices. We covered the likely forms that will be encountered and talked about the radios and the major carriers that support the different radio types. Now it’s time to talk about who makes the devices and what types of devices they manufacture.

In the early days of wireless cellular, you only had a few choices in M2M devices. They were either external “bricks” with a serial port and an antenna connection or PCMCIA style card with a fragile little antenna on them. There were only a few manufacturers of the end devices and even less choices in radios modules (or just modules engineers call them) that went inside them. Most solutions were relegated to using the external modems because unless you had a Read the rest of this entry »

Distributed Antenna Systems (DAS) and Why the Growth?

Thursday, April 29th, 2010 by David Hoglund

This is an excellent article by Crown Castle. The I-Phone, data usage, the costs to add more towers, just means the BTS and or BDA will be inside the buildings. This is the only way you can add more capacity.  Also, most people have a hard time understanding that now 70% of cellular calls as well as data, are made “inside” a building.

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Philips Telemetry and 802.11 Infrastructure

Thursday, April 29th, 2010 by David Hoglund

It is rumored that some day Philips (on-going), will be coming out with a 802.11 (based), b/a or maybe n telemetry system. Where does this place WMTS? Legacy. When I go to the Philips web site  and read about IntelliVue Telemetry and 802.11 Infrastructure, I scratch my head a bit.

- IntelliVue 802.11 Infrastructure. “It is not designed for use with or near other 802.11 networks that use the same spectrum.  For example, enterprise 802.11b/g networks can be used in the same space when the Philips infrastructure is set to use 80211a (5 GHz)” – This simply means that you have to install a “separate” infrastructure just for bedside and transport monitoring..yes?  Why cannot you use 802.1q trunking and make this a part of the enterprise and save costs?

Philips is offering now it seems 1.4 Ghz (higher band), of WMTS and 2.4 GHz (ISM), however this is proprietary “smart hopping” technology. But it seems that you could by their statement run both telemetry and portable monitoring patient monitoring on this network too. I guess the only reason you would want 2.4GHz “Smart Hopping” is if you desire to expand telemetry coverage up to 1,028 patients.  But this totally different than the previous 802.11a infrastructure. (Note they mentioned 2.4GHz (ISM), but not the 802.11b/g/n, IEEE protocol)

In today’s healthcare economic climate it seems that Philips is saying no to “any” ability to share an enterprise network.  This simply means “dedicated” switches and 802.11 infrastructure for portable monitoring and dedicated either WMTS or proprietary 2.4GHz infrastructure additionally for telemetry.

The way I read this is as follows:

1. 802.11a/b/g/n for enteprise data and voice over IP, video etc.

2. Entirely separate 802.11a network for portable monitoring

3. Entirely separate 1.4Ghz or 2.4Ghz infrastructure for telemetry monitoring

In 2010 hospitals are desiring house wide coverage for telemetry and portable monitoring. This allows for flexibility in monitoring patients from the ER, dialysis, orthopedics you name it.  The “traditional’ step-down unit for “telemetry”, is now pretty much house wide. Having multiple infrastructure(s), to accomplish this gets “very expensive”

I guess as the market leader they can convince customers that they have all this “separate” infrastructure, however in 2010 with proper network design and enterprise grade components, “proprietary networks” are really no longer needed.  John Chambers CEO of Cisco Systems even commented in 2006 at HIMSS in his key note, that “proprietary networks are history”.

Would like to see people chime in here and give their opinions.

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M2M cellular devices: What are they and who are the players?

Thursday, April 29th, 2010 by M2M Expert

Part 1 of 2: What are they?

You can’t talk about M2M and not have cellular communications come up in the conversation somewhere. You inevitably be talking about either the carriers or the devices that get you on the network…. the modems. Modems are what we are going to be discussing in this post. Primarily who the major manufacturers of the devices are and what devices they make. Before we go there though, I want give a brief background on the devices Read the rest of this entry »