Currently viewing the tag: "TD-LTE"

Hope everyone had a great Thanksgiving if you are US based, else hope everyone enjoyed having the US off. Happy ThanksgivingI have a number of big, urgent and interesting projects going on that each have NDA type of agreements and so between the time and the mouth shutting agreements, it is severely putting a damper on my ability to bring attention to events going on in our world. This too shall pass and I will sputter out some tidbits here and there for the next few months.

Interesting things catching my eye with respect to (wrt) the wireless world include:

eSRVCC is an improvement to the SRVCC where instead of having the home network be the voice anchor, the visited network anchors aspects of the voice calls. This will streamline network-network communications and reduce latency, thus improving end user experience.
Here are before and after network diagrams.
I think the debate about LTE vs FTTH pricing is an interesting one. The intuitive answer is there is a competitive advantage to wireless however in the US there is a major premium on wireless data pricing. This is a very interesting thing that I’m hoping globalization can help. If there were true price competition (assuming identical services) then I bet the pace of change would be astonishing. Can’t wait to see how this goes in Japan.
The FCC is debating allowing DISH use the PCS band adjacent to the G block (H block) for LTE and this is, in and of itself is mildly interesting. But more interesting is the impact it could have on DISH’s plans to use their adjacent spectrum for LTE. Remember DISH came up with 20×2 MHz channels with the acquisitions of DBSD and TerreStar earlier. The FCC is open to DISH’s use but they are looking to add adding power restrictions in the UE TX band…to me limiting DISH’s opportunity, for example to deploy TD-LTE. I’m not sure why the filtering requirements cannot be sharpened on both sides of the spectrum but they never seem to do this. (Band 12 and Channel 51) 
The transformation of the mobile ecosystem is under our noses. See this chart.

Finish and Irish auctions of 800MHz are interesting just to help ecosystem for infrastructure add low bands…hopefully that ends up adding 700MHz capability to everything too.

Have a good one…Oh two more interesting tidbits…

Network Planning for LTE-Advanced

2012 LTE NA: What is a “Thinking Network”?

Clear and Qualcomm announced the addition of 3GPP Band 41 (2.4GHz) and TDD support for their line of LTE chipsets. This is a very big milestone announcement as I see it. 


TD-LTE is more efficient at low-med usage than FDD and I expect the rest of the world to jump onto TDD-LTE to realize the efficiencies that are inherent with TDD. For example, instead of having a paired band of 20MHz for eNB and 20MHz for UE, with Release 10 carrier aggregation, Clear can effectively deploy a 40MHz channel in the same footprint as a 20MHz FDD. This is a very good use for their 100-120MHz of 2.4GHz spectrum they have been hoarding.  


Make no mistake, TD-LTE will end up the more popular technology in much of the world and here in the US, with a Clear deployment, the broadband universe is finally getting some needed upgrades in competition.

Full PR below….

BTW, Clear is up to 11M subscribers now.

Links: Clear, Qualcomm

Clearwire Expands LTE Choices in North America

Qualcomm to Add 3GPP Band 41 to its Existing 3G/4G Multi-mode, Multi-band LTE Chipsets, Giving Global LTE FDD and LTE TDD Operators Expanded Range of Device Options

SAN DIEGO AND BELLEVUE, WASH. – May 08, 2012 – Qualcomm Incorporated (NASDAQ: QCOM) and Clearwire Corporation (NASDAQ: CLWR) today announced that Qualcomm will add support for Clearwire’s upcoming LTE TDD network to its line of multi-mode LTE chipsets with the inclusion of support for 3GPP’s Band 41 (B41) radio frequency. This new enhancement builds on Qualcomm’s existing multi-mode, multi-band support for LTE FDD, LTE TDD and major broadband wireless standards, thus enabling OEMs to develop a wide variety of cost-effective, fully harmonized LTE devices for networks around the world.

“The growth of LTE networks and services is closely tied to device manufacturers’ ability to develop and commercialize cost-efficient LTE devices,” said Steve Mollenkopf, president and chief operating officer, Qualcomm. “By adding support for the B41 band to our LTE chipsets, in combination with providing support for other LTE bands, Qualcomm is enabling OEMs to design cost-competitive devices and offer them in multiple geographies.”

“We are pleased that Qualcomm will expand the size of the LTE ecosystem by adding support for Clearwire’s LTE frequency bands to their chipsets. By working with Qualcomm, Clearwire will ensure that LTE TDD and LTE FDD will work seamlessly together. This will bring significant benefits to OEMs, network operators and consumers alike,” said Erik Prusch, president and CEO, Clearwire. “Qualcomm is a well-established leader in mobile processor and modem solutions. Their Snapdragon processors and Gobi modems are synonymous with fast, low-power mobile computing and high-quality mobile broadband connectivity.”

Qualcomm LTE chipsets supporting the B41 band in combination with other LTE FDD/TDD bands are scheduled for commercial availability later this year.

About Clearwire
Clearwire Corporation (NASDAQ: CLWR), through its operating subsidiaries, is a leading provider of 4G wireless broadband services offering services in areas of the U.S. where more than 130 million people live. The company holds the deepest portfolio of wireless spectrum available for data services in the U.S. Clearwire serves retail customers through its own CLEAR® brand as well as through wholesale relationships with some of the leading companies in the retail, technology and telecommunications industries, including Sprint and NetZero. The company is constructing a next-generation 4G LTE Advanced-ready network to address the capacity needs of the market, and is also working closely with the Global TDD-LTE Initiative and China Mobile to further the TDD-LTE ecosystem. Clearwire is headquartered in Bellevue, Wash. Additional information is available at

May 8, 2012

Ah, Product Announcements. LTE marketplace growth. Have a nice day.




CalAmp to Supply Its Fusion-LTE Router to Vermont Utilities

Marketplace growth: A competitor for the Cradlepoint wireless router that supports LTE.

Mobile Operators can accelerate LTE Voice Strategy with ‘0 to VoLTE in 30 days’ offer 

It’s an IMS supporting VoLTE ready for deployment being actively marketed as such.

Spreadtrum Introduces SC9610 TD-LTE UE Chipset

These guys are aiming at $100 smartphones overall. This is the first TD-LTE chipset aiming for that market.


Links: Calamp, Mavenir, Spreadtrum

Now things are getting interesting. Altair quietly announced a release of Rohde & Schwartz CMW500. This is interesting because Altair, as you may remember, has a very cool Software Defined Radio (SDR) based chipset for LTE, the o2P that supports Band 12 and TD-LTE amongst other things. The R&S CMW500 is a typical piece of equipment for manufacturing and repair lines thus enabling an OEM to actually mass produce a device based on the Altair technology. I hope to see many design wins and Band 12 devices in the near future, better yet let’s get some Band 12 devices on Woot!


Link: , Rohde & Schwartz

Full PR After the Break…

Read Full Article →

I found these interesting…this is a bit of a follow up to the previous post regarding NSN’s 6 pipes capability.

ZTE rolled out a compact TD-LTE Smart Antenna at the Multi-Antenna Technology Conference in Dusseldorf, Germany. Apparently the demo, with this smart antenna, achieved 8Mbps at the cell edge using beam forming. Sounds great. Unfortunately, I was unable to find a public pic of this smart antenna nor any other information in English… So more to follow. 

Full PR After the break.

Link: ZTE

Read Full Article →

Recently Nokia Siemens Networks and Alcatel-Lucent reminded us that they are helping China Mobile and they are still pushing forward with TD-LTE. I haven’t seen any new information since the original release covered here earlier but I guess the PRs go hot and heavy around CTIA time. OK, large TD-LTE deployment, first of its kind. There will be a ‘commercial’ USB dongle. This is a recording…

Update: We learned that the vendors have so far received 1 market of 200 eNB per market so far. Alcatel Shangai Bell is going to build Shanghai, Huawei is building Shenzen, Nokia Siemens Hangzhou, ZTE gets Guangzhou. TD-LTE could eventually be bigger than the FDD-LTE that is being launched in the US, Europe and other countries.

Links:  Smartmoney, Alcatel-Lucent, SONLTE

Read Full Article →

A few months ago, we examined ATT’s purchase of D and E block (lower 700MHz) spectrum from Qualcomm. As of the 11th, there has been some public opposition that has formed around the purchase of this spectrum by ATT. The RCA, Cellular South, Dish and some advocacy groups have filed their thoughts with the FCC. I can see why these guys feel like ATT is a major problem if they can aggregate spectrum in this band. What’s interesting from a technology perspective is that ATT could choose to deploy TD-LTE with this spectrum or work to form/unleash a weird, off balance Release 10 spectrum aggregation scenario on the USA. This would be a unicorn and device support would probably need to be initially unique to ATT. Game on!



Links: FCC, RCA

Read Full Article →

Woohoo! The MSM8960 Gobi, available with or without a Snapdragon processor is available for 3G+4G devices. Key feature is it is multi-protocol so it can be implemented to traverse any network. This seems like something Apple foremost and Google/Microsoft ultimately will utilize to reduce costs and proliferation of HW versions.

Source: Qualcomm

More details below:

Read Full Article →



Voice over LTE (VoLTE) is the next big thing. In fact, in 24 months, virtually all LTE enabled smart phones will support it. Curious?
Small Cells

Small Cells

Small Cells, previously known as 'femto' or 'pico' cells are possibly a savior to network operators. They offer capacity and coverage to the end user and are inexpensive for the network operator. Why aren't they everywhere?
Public Safety

Public Safety

LTE is and ideal technology for Public Safety use. See Why.