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Martin ,
You explained in very simple words and it was very informative since you compared with 3G...Thanks.

BTW , I have a question - For a voice call in LTE , Do we need default bearer or do we need some dedicated bearer also ??

Bob Syputa

This looks very similar to the mechanisms in 802.16m.

The Verizon open development webinar too place today. The talk mostly was confined to the rel. 8 specification and Verizon's overlay spec.
They did clarify a few points and gave some hints about future developments including that they would evolve the network to the LTE-Advanced specification including E-UTRAN developments.

However, there are some limitations including use of MIMO. I suspected that this might be the case because the network will use AWS 700MHz spectrum.

The 10MHz x 10 MHz FDD channel access organization makes sense for that spectrum but, and many here may disagree, I think this is a limiting approach in networks that evolve to use micro-cellular SONs tiered spectrum. That will be something that Clearwire might develop to an advantage.

The strength of Verizon's network will be the great penetration and range. And, of course, leveraging of their market position, capital and partners.

Another point is that VZW will use SIMs. Frankly, I think 3GPP should adopt the virtual SIMs embedded firmware approach that was propsoed for rel 8 and get away from discrete SIM cards. That makes sense for mobile controlled devices but makes little sense for the multiple-attach usage model that Verizon's CEO said would become the virtue of the new network. He said that while 3G networks are measured as having reached 90+ saturation, the LTE network would achieve 300%-500% saturation, - going on to say that means users will have several devices. In that situation, why use the little discrete SIMs cards? I suspect that approach will end up going away within five years as it will just add cost and less flexiblity.


Hi Jagadeesh,

well, network operator deployed Voice over LTE could benefit from it but it's not a necessity. Over the top VoIP, however, can't access it, unless they make a deal with the operator to get access to the network API. Hm, maybe a business model coming up here?




That was a good comparision, does anybody have MSCs between mobile and network for LTE from ESM perspective.

thank you


Stubled upon your blog, great informative article to those working in mobile networking!


I have a question.
What is function of APN in LTE.

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