Intel Kills 2250 WiMax Chip  

Intel today told its customers that it will stop manufacturing the WiMax Connection 2250 chip (pdf) and the WiMax Connection 2300R radio chip (pdf), reports TG Daily. The news came via a product change notification sent out by the company, announcing an unusually quick phase-out. Final orders were taken today (June 5).

Intel has been among the top-3 investors in Clearwire, the WiMax carrier in the U.S. The company has a significant role in pushing WiMax to the consumers. But WiMAX chip companies Beceem and Sequans have become the overwhelming favorite for use in consumer client devices. Intel has also invested in Beceem.

In a phone call with TG Daily, Intel said that the company will not drop its WiMax chip production, but focus on more recent WiMax chips, the Echo Peak chipset (the Intel WiMAX/WiFi 5150 and 5350), instead. Instead of shipping RF chipsets, like Beceem and Sequans, Intel has focused on delivering platforms encompassing both processing and multimedia capabilities with combined WiFi/WiMAX connectivity on small PCIe Mini Express Cards that slip into Centrino laptops.

According to WiMAX.com, four leading WiMAX semiconductor companies - Beceem, Sequans, GCT and Wavesat- presented their outlook for 4G networks and related silicon at the May 13th IEEE Communications Society panel session entitled, “Semiconductor Evolution to 4G: Mobile WiMAX, LTE, and other 4G technologies.”


Lars Johnsson of Beceem expressed what seemed to be a consensus view of the four semiconductor company panelists: “Wireless is the hard part, silicon is the easy part.” The basic premise is that the algorithms needed to achieve good performance on an OFDMA based wireless broadband link is more difficult then designing the silicon for that same link- especially when the end point is in motion. The broadband wireless design challenge starts with constantly changing signal strength and it gets more difficult once the terminal starts moving.

Some of the wireless design issues Lars identified were: signal tracking (to improve performance under all conditions), channel estimation (allows for better decoding), high-speed mobility, hand-off (from one base station to another), maximum likelihood receiver (improves receiver sensitivity), interference detection, and noise cancellation.

Ambroise Popper of Sequans stated that many core silicon functional blocks, now used in WiMAX (IEEE 802.16e-2005) can be leveraged for 4G: the OFDM modulator/demodulator, FEC, Channel estimation, and MIMO processing. Sequans plans to facilitate a smooth evolution to 4G for WiMAX network operators. They plan to develop and offer converged dual-mode IC’s for backwards compatibility with Mobile WiMAX devices. Those components will fully support the existing 802.16e and either 802.16m or LTE (dependent on market demand). They see efficient low-power implementation and radio performance as key differentiators between 4G and Mobile WiMAX/802.16e.

Meanwhile, Intel is investing $43 million in Japanese WiMax provider UQ Communications, which plans to cover 90 percent of Japan by 2012. It will formally launch the service on July 1, in Tokyo’s 23 wards, Yokohama and Kawasaki, and the Tokyo International Airport. UQ Communications is also backed by KDDI, Japan’s number two cellular carrier, JR East, the major railway operator in Eastern Japan, Kyocera, Daiwa Securities and Tokyo Mitsubishi Bank.

Taiwan’s Vmax is one of 30 WiMAX technologies and service providers worldwide receiving Intel investment. Vmax will primarily sell data cards or MIDs to users in Taiwan.

Only a handful of WiMAX-enabled mobile phones are on display at Computex this week, and some are prototypes such as one running chips by MediaTek, Taiwan’s biggest handset chipmaker. Global Mobile Corp is showcasing handsets supporting WiMAX technology including a dual-mode smartphone, code named MAX 4G, from HTC, the biggest maker of handsets running Windows Mobile. HTC has shipped the MAX 4G to Russia’s WiMAX operator Yota, which launched the services in Moscow and St Petersburg on Monday.

In Taiwan, Global Mobile Corp is set to launch its service next quarter, followed by Vee Telecom Multimedia and the nation’s No. 3 mobile carrier, Far EasTone Telecommunications, by the end of this year.

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Saudi Mobily: $100M for Samsung WiMAX  

Reuters reported today that Saudi mobile telephone firm Etihad Etisalat (Mobily) has awarded Samsung a $100 million deal to expand the WiMax network through its broadband subsidiary, Bayanat al-Oula.

The network would be the biggest of its kind in the Middle East both in terms of geographic coverage and user capacity, said Salim Saasouh, Samsung’s Middle East and North Africa regional manager for telecoms and network business. Mobily, which bought Bayanat in 2007, would finance the expansion through a loan.

The deal would expand WiMAX service to 20 cities from the four previously covered by the firm.

“Bayanat’s existing WiMax network serves 30,000 subscribers. With this expansion, we will be able to increase Bayant’s WiMax capacity by at least three times,” said chief executive, Khaled al-Kaf. He said this makes his firm a market leader in Saudi Arabia.

Samsung will deliver 1,400 stations to increase Bayant’s overall number of WiMax stations to 1,800 and will deliver the network before the end of 2009.

According to the GSM World Association, Mobily has the busiest data network on the face of the planet, with 452,000 mobile broadband subscribers by the end of 2009’s first quarter, who consume over 30 terabytes of data a day.

Mobily competes with Saudi Telecom, the largest Arab telecom firm by market value, and Zain Saudi Arabia for mobile telephone users in the kingdom, where mobile telephone penetration exceeds 100 percent.

Meanwhile, Etihad Atheeb Telecommunication, a joint venture between Bahrain’s Batelco and the local Atheeb Trading Group, recently announced the launch of a new nationwide WiMAX 802.16e network in Saudi Arabia using Motorola gear.

Deployment of the network started in 2008, and includes Motorola’s WAP 800 access point, featuring smart antenna technology (beamforming). Service is beginning in the Saudi capital Riyadh and the Red Sea port city of Jeddah. Etihad Atheeb Telecommunication Company was formed as a new provider of fixed telecoms services in Saudi Arabia, ending Saudi Telecom’s monopoly over fixed line services in the country.

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Towards a REAL “4G” Standard  

At the 2009 IEEE ComSoc which met on May 13 in Santa Clara (pdf), Intel’s Principal Wireless System Architect, Hassan Yaghoobi, presented a Mobile WiMAX roadmap (pdf) including IEEE 802.16e (Release 1.0), the current version of IEEE 802.16e (Release 1.5), and the next generation, IEEE 802.16m (Release 2.0).

Both the current Mobile WiMAX standard (Release 1.5) and LTE are expected to move from their current status as “3.5G” standards to an official “4G” standard, supported by the International Telecommunications Union in the next few years. The official “4G” standard will be called IMT-Advanced. A true “4G” standard is expected to deliver up to 100Mbps (mobile) and 1 Gbps (fixed).

IMT-Advanced, the official ITU “4G” standard, will actually be an umbrella of “4G” standards, supporting differing (and incompatible) WiMAX and LTE versions.

  • The LTE version of “4G” will be called LTE-Advanced. That standard is still being defined.
  • The Mobile WiMAX version of “4G” will be 802.16m.

The ITU will bless multiple “4G” standards under the “IMT-Advanced” umbrella, including both 802.16m and LTE-Advanced.

Current 802.16m progress includes features such as support for both Full Duplex (on 5 Mhz channels) and Half Duplex FDD on bands such as 700 MHz and AWS, Enhanced Multicast and Broadcast Services and interoperability.

Recent WiMAX Forum activities include:

  • WiMAX Forum is working on enabling Mobile WiMAX FDD through R1.5 Air interface.
  • Mobile WiMAX R1.5 based on IEEE 802.16/Rev2 has been submitted as an update to IMT-2000 OFDMA TDD WMAN to include FDD.
  • Preparation work is underway for development of R2.0 conformance and Interoperability specifications based on IEEE 802.16m.
  • Mobile WiMAX R2.0 is being submitted to ITU as a IMT-Advanced candidate


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Virgin Mobile: Prepaid Data Plans  

Virgin Mobile USA introduced today a new wireless broadband service over the Sprint’s EV-DO network. Dubbed Broadband2Go, the service offers pay-as-you-go cards with no contracts, roaming charges or activation fees.

Virgin is the first national contract-less carrier to make data plans pre-paid, says the company. But true contract-less mobile broadband service are also available from Clearwire ($30/month) and Leap Wireless ($40/month), although their coverage is more limited.

Virgin’s plans are aimed at casual broadband users who don’t want a contract and don’t need the 5 GB maximum download offered by most cellular carriers.

Virgin’s pre-paid data rate plans include; $10 for 100MB, $20 for 250MB, $40 for 600MB and $60 for 1GB. The $10 bundles will expire ten days after purchase, while the rest of them will expire after 30 days. Top-Up cards can be used to purchase data usage from 100MB to 1 gigabyte on the pay-as-you-go model.

The service will use a Novatel MC760 USB dongle, said to be the world’s smallest EV-DO Rev A device, will be available exclusively at Best Buy for $150. It includes an integrated microSD slot for storing and transporting up to 16 GB of files.

Most cell carriers offer 5 GB at $60 per month, under a 2-year contract.

On Monday, Sprint said it would also offer enterprises a 500 MB 3G broadband access plan for $40, more than doubling the data cap offered by VZW and AT&T’s similarly priced plans.

Engadget Labs tested the cellular modems of each of the four major carriers and proclaimed “The best mobile broadband carrier in America was Verizon. Based on coverage alone, they liked Verizon best (from a national standpoint) and AT&T second. They used the following data cards and plans:

All four major US carriers offer capped mobile broadband, topping out at 5GB of throughput per month.

I live in Portland, Oregon, and have two (truly) unlimited wireless broadband services from Clearwire for a total of $55/month (plus $10/mo for device rental). They each typically deliver 3-4 Mbps down and 500Kbps up — with no caps. One client is a Motorola USB WiMAX dongle and the other is a Motorola residential WiMAX modem. They work well. I have been using Clear’s WiMAX service since December 1st, 2008, and have experienced no significant problems so far.

Clear also is running a big expensive advertisement on this site, which — if truth be told — disposes me to be sympathetic. I’m not adverse to telling the truth, however. If problems or issues arise with Clear’s service, I’ll report them.

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LTE & Mobile WiMAX Explained  

Confused about the differences between WiMAX and LTE? Don’t worry about it, says Jason Hiner of TechRepublic. Hiner says the major differences are in the business model, not the technology.

Randall Bennett at TechVi, asks Jason Hiner where WiMAX is going to be deployed, and how it compares with competing standard LTE.


Major technical differences between LTE and Mobile WiMAX include:

  • LTE primarily uses FDD for full duplex on two 5 Mhz channels, while WiMAX uses TDD for half duplex on one 10 MHz channel. Both will do voice, but WiMAX is designed around data while LTE is designed around voice.
  • Clear has 120 Mhz available in most major cities on the 2.6 GHz band, while cell carriers have perhaps 12 Mhz (in the 700 MHz band) and another 12 Mhz in the AWS band (1.7/2.1 MHz). That’s a difference of 5 times.

Cell carriers, explains Hiner, will implement voice-centric LTE in the next 2-3 years. Data-centric Mobile WiMAX is expected to be available in New York, Washington DC, Chicago and SF next year.



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