Email Delivery

Receive new posts as email.

Email address

Syndicate this site

RSS 0.91 | RSS 2.0
RDF | Atom
Podcast only feed (RSS 2.0 format)
Get an RSS reader
Get a Podcast receiver


About This Site
Contact Us
Privacy Policy



Web this site

January 2007
Sun Mon Tues Wed Thurs Fri Sat
  1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31      

Stories by Category

Hardware :: Hardware CPEs Chips Smart Antennas
Industry News :: Industry News Trials Vendor News competitive landscape conferences financial deals mergers and acquisitions interoperability launches organizations
Industry Segments :: Industry Segments Voice cellular municipal operators rural applications
Mobile WiMax :: Mobile WiMax
Partnerships :: Partnerships
Regulatory :: Regulatory Auctions
Spectrum :: Spectrum 2.3 GHz 2.4 GHz 2.5 GHz 3.5 GHz 5 GHz ITFS Licensed spectrum
Standards :: Standards 802.16-2004 802.16-2005 (16e) 802.20 WiBro
WiMax Forum :: WiMax Forum Certification
applications :: applications
future technologies :: future technologies
hype :: hype
international :: international
launch plans :: launch plans
mainstream press :: mainstream press
mesh :: mesh
new technologies :: new technologies
personnel :: personnel
proprietary technologies :: proprietary technologies
research :: research
roaming :: roaming
security :: security
temporary networks :: temporary networks
unique :: unique


January 2007 | December 2006 | November 2006 | October 2006 | September 2006 | August 2006 | July 2006 | June 2006 | May 2006 | April 2006 | March 2006 | February 2006 | January 2006 | December 2005 | November 2005 | October 2005 | September 2005 | August 2005 | July 2005 | June 2005 | May 2005 | April 2005 | March 2005 | February 2005 | January 2005 | December 2004 | November 2004 |

Recent Entries

Nokia Will Supply Sprint with WiMax Gear
Sprint May Add Nokia to Mobile WiMax Vendor Line-Up
NextWave, Clearwire Both Poised for Stock Offerings
Clearwire Reveals Increased Spectrum Holdings
German Broadband Wireless Auction Sees Clearwire, Inquam, DBD as Winners
India's First Certified WiMax Network
Germany Starts WiMax Auction Next Week
Intel Shows WiMax, Wi-Fi, Cell Chip with MIMO
Alvarion Mixes Wi-Fi, pre-WiMax, WiMax
Nortel in Japan, Taiwan with WiMax

Site Philosophy

This site operates as an independent editorial operation. Advertising, sponsorships, and other non-editorial materials represent the opinions and messages of their respective origins, and not of the site operator or JiWire, Inc.


Entire site and all contents except otherwise noted © Copyright 2001-2006 by Glenn Fleishman. Some images ©2006 Jupiterimages Corporation. All rights reserved. Please contact us for reprint rights. Linking is, of course, free and encouraged.

Powered by
Movable Type

« Intel Says New Fixed WiMax Chip Upgradable to Mobile, Nomadic | Main | Skype over WiBro on the 19th Floor »

October 12, 2006

Nortel Says They'll Deploy Fixed WiMax in UK with Mobile Equipment

By Glenn Fleishman

The terminology kills me: Nortel says that a provider in the UK will use its equipment to deploy WiMax service in the 3.5 GHz band in the UK. But the licenses for that operator allow only fixed use. Rather than use the 802.16-2004 spec which offers fixed-only profiles, Nortel says its partner will use 802.16-2005, typically referred to as mobile WiMax—but which has fixed, nomadic, and mobile uses. (The band is owned by Pipex, which ZDNetĀ  reports said it wasn’t working with Nortel.)

There’s still debate over a dedicated band that would allow mobile WiMax, with 2.5 to 2.7 GHz under consideration. 3G operators naturally want 3G-related standards to be the only ones permissible in that band.

Posted by Glennf at October 12, 2006 8:27 PM

Categories: 3.5 GHz, 802.16-2005 (16e), international


Its true that 802.16-2004 does include an uplink 2048 FFT OFDMA air interface option, but the "fixed WiMAX" subset of 802.16-2004 only specifies the 256 FFT OFDM air interface. Manufacturers that have "fixed WiMAX" 256 OFDM products to sell tend to blur the differences between the different flavors of WiMAX while manufacturers that plan to have 802.16-2005 "mobile WiMAX" products in the future emphasize the differences. I predict that only 802.16-2005 based TDD 5ms frame 512 or 1024 FFT mobile WiMAX survives to be simply called WiMAX.

Biased but useful info on differences between "fixed WiMAX" and "mobile WiMAX" follows.

Posted by: George B at October 20, 2006 10:01 AM

Actually the 802.16-2004 also includes the same UL functionality described in the previous comment - called "sub-channelization" - as an option.
The 802.16e-2005 standard includes many improvements to the standard, including better security, smart antennas, and OFDMA (also in DL), which make it a superior standard also for fixed-wireless applications.

[Editor's note: I should distinguish that while -2004 has OFDM, it doesn't allow flexibility in provisioning each subchannel over either time or frequency domains (TDD or FDD). With OFDMA and -2005, different subcarriers can be dynamically scheduled to be uplinks or downlinks across either time or frequency, allowing for more efficient and more specific provisioning.--gf]

Posted by: jno at October 20, 2006 1:14 AM

Ignore the confusing "fixed WiMAX" vs. "mobile WiMAX" marketing terms. "Mobile WiMAX" 802.16-2005 (802.16e) should be less expensive to deploy for consumer fixed networks than "fixed WiMAX" 802.16-2004 (802.16d). 802.16-2005 tends to allow the use of indoor self-installed modems vs. outdoor antennas for 802.16-2004. For 256 FFT OFDM 802.16-2004 the subscriber station must use all subcarriers when transmitting and uplink capacity is shared by dividing the channel into short bursts in time. The 802.16-2005 scalable OFDMA air interface allows each subscriber stations to use a subset of the available subcarriers while other users are using different subcarriers. Sending the same information using less bandwidth stretched out over a longer period of time allows the subscriber station to either transmit less power (less expensive RF components) or use a much smaller antenna to achieve the same SNR at the base station receiver.

Posted by: George B at October 16, 2006 11:45 AM

Post a comment

Remember Me?