tag:blogger.com,1999:blog-17500930.post7263174764401569329..comments2024-03-20T22:57:03.923+00:00Comments on Dean Bubley's Disruptive Wireless: UMTS at 900MHz becoming a realityDean Bubleyhttp://www.blogger.com/profile/05719150957239368264noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-17500930.post-91140182616408543072008-12-06T07:08:00.000+00:002008-12-06T07:08:00.000+00:00Vodafone New Zealand has a big 900mhz UMTS/HSPA de...Vodafone New Zealand has a big 900mhz UMTS/HSPA deployment on now with many sites live to customers. I am posting this connected to the network now in Rural New Zeland.Unknownhttps://www.blogger.com/profile/01935575658720057764noreply@blogger.comtag:blogger.com,1999:blog-17500930.post-29616855812838509982008-06-22T06:32:00.000+01:002008-06-22T06:32:00.000+01:00It seems to me that many people don't realize what...It seems to me that many people don't realize what a big deal UMTS 900 really is. UMTS 2100 provides cell site range of up to 20KM, 2G 900 GSM provides up to 35KM limited by timing issues fitting into your 'timeslot' due to it being TDMA base. <BR/><BR/>But 900 UMTS provides up to 90KM range because being CDMA it is not limited by 900 GSM's timing issues. So it provides 2-3 times the distance of 2G at the same frequency!<BR/><BR/>It was a very major mistake by the European standards bodies who established 3G not to adequately promote it at a lower frequency. They also messed up with the power & battery requirements for 3G devices but that's another story.<BR/><BR/>Cheers,<BR/>TimAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-17500930.post-24177796427091319982008-06-04T09:08:00.000+01:002008-06-04T09:08:00.000+01:00Thanks AlexUMTS900 may be able to provide good ind...Thanks Alex<BR/><BR/>UMTS900 may be able to provide good indoor coverage for relatively small numbers of users. This could reduce the demand for femtos used by a small % of users purely to improve in-building signal.<BR/><BR/>How it will not be able to cope with dense urban areas or heavy concentrations of users because although it has good penetration, the band (and existing cell sites) do not have that much *capacity*<BR/><BR/>There is an important difference between *indoor coverage* and *indoor capacity*.Dean Bubleyhttps://www.blogger.com/profile/05719150957239368264noreply@blogger.comtag:blogger.com,1999:blog-17500930.post-64525271992300651812008-06-03T15:35:00.000+01:002008-06-03T15:35:00.000+01:00Sure UMTS 900 is initially for 3G coverage... but ...Sure UMTS 900 is initially for 3G coverage... but once UMTS 2100 capacity is filling up (from increasing data usage) and device penetration up, isn't UMTS 900 the #1 easy route to indoor capacity?<BR/> <BR/>Why would an UMTS 900 operator go through all the extra trouble with femto cells when 3G indoor coverage & capacity can be achieved from existing outdoor sites?<BR/><BR/>And why wouldn't one-by-one all GSM countries go this route?Anonymousnoreply@blogger.com