Re: [MEXT] the future of the MEXT working group

[Hidetoshi Yokota <[e-mail]>]

Hi Charlie,

(2011/11/11 6:42), Charles E. Perkins wrote:
> 
> Hello Hidetoshi,
> 
> On 11/10/2011 4:41 AM, Hidetoshi Yokota wrote:
>> Hi,
>>
>> I think that the point is to give a choice to the network and user if
>> mobility is needed or not. Some applications benefit from seamless
>> mobility (e.g., VoIP), but others may not (e.g., Web access). The
>> network and user should be able to specify the capability of mobility
>> and appropriate access network for each application. In that sense,
>> Dynamic MM is an interesting feature.
> 
> I pretty much agree with this; I expect that working out the
> details will be pretty tedious and perhaps even contentious.
> 
> 
>> I agree that the current 3GPP architecture is very complicated and may
>> not be optimal, but I don't think it is a good idea to change it in 
>> IETF...
> 
> I agree we can't "change" 3GPP architecture in the IETF, but
> we can respond to the needs which are evident from considering
> the 3GPP architecture. It seems very few believe that LTE
> is really immune from further evolution and even significant
> change in the future. If IETF does NOT respond to the needs made
> evident in current 3GPP specifications, we have little hope of
> proper integration into their future evolved designs.

I fully agree with your point and am glad you initiated this discussion.
One of the reasons for its complicatedness is that the 3GPP architecture
has been incrementally built considering all the backward compatibility
and interoperability along with introducing new features and minimizing
the unhappiness of all. I respect this effort and achievement we all
enjoy today. On the other hand, the current mobile traffic is way too
much for this architecture to be able to handle. If IETF can contribute
to tackling this issue toward the future evolved design, it will be very
valuable. I don't know if DMM is the start point or we need a new WG,
but we still have a high mountain to climb.

Regards,
-- 
Hidetoshi

> Regards,
> Charlie P.
> 
> 
>