Cable Forum - Virgin upgrading IP backbone network

Quote:

Originally Posted by Incomplete (Post 34323034)

GigE? You're having a laugh ;)

The core was 10Gbit/s and will be going to 40Gbit I imagine.

Try getting that down WiMax :p:

well, i did said the BY bit, and im using nothing but public available info, (funny the NTL and TW maps even though they didnt give the links speeds have gone missing?), i would be the first to say its faster if i could find the info... show me.

but if you call 2x10Mbit connections from telehouse ,one to knowsley, and one to bradford 'THE Core'.... so be it.

ill hold my hands up and say i was perhaps wrong on the mostly 1Gigabit, they are infact mostly POS STM-16 at 2.5Gigabit, still 4 times slower than your 10Mbit claim?.

i was perhaps confusing the most connections, as 'the core' network, were the most connections are to the private peers, and they are infact 1Gigabit, do we count them as THE Core?, if so then yes, it seems currently the BY bit is mainly 1Gigabit but ill conceed that the current core is 2.5Gigabit, with 1Gigabit (doesnt say how many,one each?)to Europe and the US.

im suprised they (do any of VM ?) dont have at least one connection to the multicast enabled surfnet 'The open optical Internet exchange in Amsterdam' being a world backbone nominated ISP....
http://www.netherlight.net/info/about/introduction.jsp
http://www.netherlight.net/info/about/technical.jsp

blueyonder map:
http://www.blueyonder.co.uk/assets/i...chitecture.jpg

Quote:

40Gbit...Try getting that down WiMax :p:

are you changing the rules?, i did say use Off The Shelf 1GigE wireless and that they can re-deploy it later, so not even a lost outlay, it will be useful somewere....

but OK , fair enough, Currently, there doesnt seem to exist any single wireless 40 GigE as a commercial option.

remember readers, we are not currently talking the last mile to end users here , but the other seperate bit thats part of the core/backhaul... (the one were it costs virtually nothing to give you highest bandwidth user to user while inside, but they still insist on adding that internal bandwidth use to your total throttling amount).

wireless 10GigE will exist retail soon enough however, and the kit does exist to Bond several wireless 1GigE/2.5GigE together..... today.

sure, its not using the latest IP centric mobile WiMax, Wave 2 and IO-MIMO tech, but when it does there will be a large increase in its output/throughput.

http://engineers.com/forum/viewtopic.php?t=72
"Posted: Tue May 01, 2007 4:19 pm Post subject: Wireless backhaul growth: Status of the industry http://engineers.com/forum/templates...icon_quote.gif Thought you forum readers might find my latest newsletter interesting ...

Dear Wireless Colleague,

Backhaul becoming sexy? The mobile backhaul market continues to grow. In 2006, worldwide cellular backhaul equipment sales totaled $3.5 to $3.9 billion (depending which analyst you believe) and is forecast to grow to over $6.0 billion in 2010. Microwave radios made up 80% of these equipment sales, suggesting significant future growth. However, advances in wireline technology are likely to erode this market share, with new technologies having much lower installed cost than wireless. Nevertheless, carriers forecast that their overall backhaul spending, already often their biggest expense item, will rise significantly from its present 15-20% level. Good news for backhaul equipment supplier!

Migration to IP and higher data rates The market is shifting from TDM circuit to IP packet switching, caused by the exploding bandwidth requirements of multi-media data traffic and the cost effectiveness of Ethernet connectivity. This can be seen on the supply side, with equipment vendors increasing revenue and changing product mix. Ceragon, for example, long bullish on high data rates and data-centric opportunities, saw Q1 07 revenue jump almost 60% over the previous year. Also the number of microwave vendors offering GigE interfaces (yes, GigE – not fast Ethernet) is exploding, with Harris Stratex, Ceragon, Dragonwave, NEC and others exhibiting GigE products at the recent CTIA show.

GigE! Really? All carriers appear to have GigE connections, existing or planned, in their networks. Two Tier 1 carriers have publicly announced they will be using wireless for varying degrees of this connectivity. In the enterprise, GigE connections are already the norm. In 2006, almost 56 million GigE ports were shipped showing the potential for GigE wireless beyond the carriers. And nobody’s even factored in the real backhaul needs for WiMAX, which remains totally underestimated by the access-focused WiMAX community!

Millimeter-wave wireless The millimeter-wave bands continue to receive attention as a partial solution for all this. 2006 shipments of 70/80 GHz GigE equipment increased four-fold over 2005, with a total of $6.6 million product shipped. Despite this being lower than anticipated for such a promising technology (mmm, remember Geoffrey Moore’s Chasm?), revamped business models and new value-added competitors make this area exciting for 2007. There are already nine vendors shipping or with announced products, 25 FCC-approved nationwide licensees, and backing from some of the industry’s heavyweights.

Want to make sense of this? AJIS can help you negotiate your way through this current wireless marketplace. Startup or behemoth, we can apply your wireless technology to real world business. Email or call us to find out more.
_________________
Jonathan Wells
Principal, AJIS LLC "
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as a side note that does cover the last mile as well as infrastructure,
some reading for those interested
http://www.embedded.com/showArticle....leID=199901089
"WiMAX is one of the most-anticipated telecom technologies of all time.

However, that's not the same as saying it's over-hyped. In fact, dozens of service providers worldwide have deployed fixed WiMAX (IEEE 802.16d) networks, and dozens more are committed to launching mobile WiMAX (IEEE 802.16e) services over the next two years.

There are crucial deployments in the U.S. this year by Sprint Nextel and Clearwire, on the heels of commercial launches last year by KT and SKT in Korea. There is also an imminent allocation of WiMAX spectrum in Japan, most likely to KDDI and NTT DoCoMo and also in the UK where BT is showing strong interest. These represent a remarkable shift in availability of spectrum for Mobile WiMAX and a clear roadmap to a global footprint of WiMAX networks.

By 2009, service providers worldwide will spend $7.3 billion on WiMAX infrastructure, up from $655 million in mid-2006, See Trendsmedia Rethink Research. The firm also forecasts that based on operators' plans, the WiMAX share of spending on broadband wireless will grow from 22.5% to 63% over the same period.

This outlook highlights reasons why WiMAX is an opportunity that few infrastructure and device vendors can afford to ignore. However, not all WiMAX technologies are created equal. In fact, understanding the differences between the fixed and mobile versions, as well as the WiBro variant, is key to how the market will evolve over the next several years. Examples include:

Although 802.16e is designed for use in a mobile environment, the technology can also be used to support fixed applications, such as broadband access to homes and offices, cell site backhaul and machine-to-machine communication. As a result, service providers and vendors can use 802.16e to target a wider variety of applications and markets than with any other technology, a key difference over 3G which is not suitable for broadband access and Fixed WiMAX (802.16d), which can not support mobility. ......"

http://networks.silicon.com/telecoms...22,00.htm?r=90
"Cheat Sheet: Wireless mesh networking
Haven't people been banging on about mesh for years?
Yes but according to those who monitor such things, mesh networking may be reaching maturity in the not too distant future. Analysts ABI Research, for example, recently predicted that cable multi-service operators may start launching commercial trials in 12 to 18 months' time in the US......"

http://www.3g.co.uk/PR/May2007/4722.htm
"
"The ability to upgrade our WiMAX basestations by software is fundamental to our strategic market advantage," said Paul Senior, VP Marketing of Airspan Networks and WiMAX Forum Board member.

"picoChip's programmable PHY has been demonstrated to support IOT between systems running WiMAX Forum CertifiedTM 16d, 16e SISO, and 16e Wave 2 MIMO, all from a common hardware platform.

This capability allows our customers to deploy WiMAX services today, confident in their ability to migrate to the latest features and performance enhancements as WiMAX evolves."

The PC8532 supports Wave 2 and IO-MIMO in both uplink and downlink. Wave 2 is the latest version of the WiMAX standard, adding increased support for mobility, while MIMO (Multi Input Multi Output) increases data-rate and reliability by simultaneously sending and receiving data by multiple antennas. The 2x2 MIMO system used in WiMAX significantly reduces CAPEX and OPEX for carriers, by increasing coverage and data-rate compared to other wireless technologies or to non-MIMO WiMAX. As a result, Wave 2 delivers maximum download and upload transmission speeds of 40Mbps and 12Mbps respectively. ...."