On Sun, Oct 10, 2010 at 10:42 AM, Joel Jaeggli <joelja@bogus.com> wrote:
On 10/9/10 5:08 PM, Ryan Finnesey wrote:
I have been working on a similar project and I am finding it very hard to get the mobile operators to understand why we want as little latency as possible and they are not very open to people peering with their "wireless" backbone.
Possibly because the way that they tunnel GTP to the GGSN and the locations of GGSN devices relative to the handsets served preclude as little latency as possible.
Yes. Some mobile providers are more heavily aggregated than others. I have been pushing for decreasing the architectural latency in the mobile architecture with IPv6 http://www.youtube.com/watch?v=1GlRgaFriYU#t=29m45 But there are a lot of roadblocks, some more technical than others. Also, the wireless providers generally don't have a point of presence in the peering NAPs. I have run this business case a few times for my company and it generally is a financial wash, and therefore not worth the effort to deploy and support additional transport and nodes at the peering locations. It's simpler and cheaper to just punt the Internet traffic out of the wireless networks as soon as possible to an ISP, and those ISP frequently own the fiber transport as well. But, like anything, you can always ask your B2B account manager for a special setup. There are special setups that i know for corporate customers.
I hope this will change with more and more eyeballs going wireless.
LTE provides an opportunity to move the bottleneck.
LTE provides some latency benefits on the wireless interface, but the actual packet core architecture is very similar to GSM / UMTS. For those concerned about latency, the key is working with the wireless operator to find where the mobility aggregation points are and how they are connected to the Internet. More advanced applications at large scale can justify direct peering, but i don't imagine that achieves much real latency benefits over just being properly coordinated with the locations and ISPs. Cameron ======= http://groups.google.com/group/tmoipv6beta =======