-------- Original Message -------- Subject: Re: [IP] mo Plug-In Internet Connection to Get Test on Long Island Date: Sun, 26 Feb 2006 22:51:32 -0500 From: Dave Goldblatt <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] References: <[EMAIL PROTECTED]>
> -------- Original Message -------- > Subject: RE: [IP] Plug-In Internet Connection to Get Test on Long Island] > Date: Sun, 26 Feb 2006 13:08:29 -0500 > From: Bob Frankston <[EMAIL PROTECTED]> > To: [EMAIL PROTECTED], [email protected] > CC: 'Dewayne Hendricks' <[EMAIL PROTECTED]> > > This snippet (or LIPA) seems to confuse connectivity via the power lines to > the house and the technologies for the power lines within the house. They > are very different and essentially unrelated. > > BPL is about using the long runs of the power lines and getting past > transformers but sometimes it's just about rights of way and the use of > fiber or other technology. > No, "Broadband over Power Lines", aka PLC (Power Line Communication) does indeed refer to using medium- and low-voltage power lines for providing a data path. There are various mechanisms of using those lines; some versions are power line end-to-end from the substation to the customer's outlet, others use medium voltage for the backbone and WiFi for end-user access, and another uses licensed radio spectrum for the backbone and low-voltage lines for the end-user. LIPA is not confusing the technology - you can read the RFP at http://www.lipower.org/papers/rfp/bpl.html - it's quite specific as to what they want. > Power line within the house is something entirely different and there are > some competing technologies including one going 200mbps. One can use BPL to > the home and the wireless within or FTTH and then power line within the > home. So far the within home power line products have not fared well > against 802.11. > > Again, I'm not sure why you believe that communication within the house (aka in-home BPL) and access BPL (that using the utility's medium- and low-voltage lines) are entirely different - they can use different protocols, but not necessarily. For example, DS2 provides a 200Mb solution which is used for both types of deployment. HomePlug is developing a similar product. BPL has a different set of issues than 802.11 - some better, some worse, but definitely different. There are several standardization efforts underway - UPA, OPERA, HomePlug, and IEEE to name a few. What was it Andy Tanenbaum said about standards... ? ObDisclaimer: My employer manufactures access BPL equipment. -dg- ------------------------------------- You are subscribed as [email protected] To manage your subscription, go to http://v2.listbox.com/member/?listname=ip Archives at: http://www.interesting-people.org/archives/interesting-people/
