Monday, 4 October 2010

Recap of MIMO Technologies in 3GPP LTE and LTE-Advanced

Friday, 1 October 2010

1200Mbps DL with LTE-Advanced


I blogged last year about the LTE-A UE categories but then the categories were still under discussion. In the 3GPP RAN WG1#62 LTE-Advanced UE Categories were discussed based on NTT DoCoMo proposal and the data rates are as summarised in the picture above.

Note that category 8 has 1200Mbps DL and 600Mbps UL speed.

The complete report is available here.

Via: WirelessMoves.

Thursday, 30 September 2010

RF Pattern Matching adopted in 3GPP Release-10

RF Pattern Matching is now a recognized unique location method in standards that provides carriers and OEMs with the ability to offer high accuracy location-based services that traditionally haven’t been available with low-accuracy Cell-ID based technologies. RF Pattern Matching will be incorporated into Release 10 of the 3G UMTS specifications, expected to become final in late 2010 or early 2011. This will also set the stage for opportunities to incorporate RF Pattern Matching into LTE and other future air interfaces.


“The decision to incorporate RF Pattern Matching into the 3G UMTS specifications is needed for all service providers wanting to provide the highest-SLA option for LBS as it gives them more credible options for public safety and commercial applications,” said Manlio Allegra, president and chief executive officer at Polaris Wireless. “This level of LBS accuracy will create an improved user experience for wireless customers, which ultimately generates additional revenue streams for carriers and other enterprises offering LBS applications.”


Polaris WLS™ is a patent-protected implementation of RF Pattern Matching, which provides the best network-based location performance in urban and indoor settings and is a perfect complement to A-GPS, enabling a best-in-class hybrid solution. Polaris’ WLS™ works without the RF Pattern Matching definition in standards, but standardization through 3GPP allows for future performance enhancements and provides flexibility for the solution and carrier implementations. Polaris’s current WLS products will continue to operate within existing standards.


By being included in the 3G UMTS standard, Polaris’ location technology has received further validation as one of the most accurate in the world. Polaris will now be considered a preferred provider to Tier 1 carriers and infrastructure vendors who want to add a high accuracy location solution to their technology mix that meets the new 3GPP standard.


The FCC is currently considering new E911 Phase II regulations that would improve indoor location capabilities for first responders. Using RF Pattern Matching, Polaris’ WLS™ software solution enables carriers and OEMs to be prepared to meet these new FCC requirements with little or no investment in new infrastructure or hardware.

RF Pattern Matching Discussion document presented in 3GPP is embedded below:


Wednesday, 29 September 2010

Micro-SIM supporting 3FF format for LTE testing

Continuing yesterdays theme of Smart Cards.


I read Comprion's recent press release with regards to Micro-SIM.


As mobile devices get more and more complex, the components used become smaller and smaller. With the launch of the new LTE Test (U)SIM supporting the 3FF format, also known as Micro-SIM or Mini-UICC, COMPRION is responding to this trend. The LTE Test (U)SIM in the Mini-UICC format is only half the size of a regular Plug-In card and can be used in very small mobile devices.

Just like COMPRION's first released LTE Test (U)SIM, this new 128K/J LTE Test (U)SIM includes all new LTE data fields up to Release 9. The card has three applications implemented: a Test SIM; a Test USIM; and a Test ISIM. The Test (U)SIM also supports the three voltage classes 1.8V, 3V and 5V. Standardised commands such as "Resize" (for extending the size of a data field) and "Create" (for creating new data fields) are supported. The Test Card's flexibility and feature range enable the user to comprehensively examine the functionality of an LTE mobile device without having access to a live LTE network.

To ensure backwards compatibility to the Plug-In format, COMPRION also offers a Mini-UICC Adapter to turn the Mini-UICC into the Plug-In format. Hence, the Mini-UICC can also be used in today's mobile phones.

Its interesting to see that the new SIM is around half the size of the original and provides the same functionality. Sign of devices and components evolving.

The embedded presentation though old may be of intereste as it shows the difference between SIM, UICC and the 3FF

Tuesday, 28 September 2010

SIMFi = SIM with WiFi

Since the beginning of this year, Sagem Orga and Telefonica have been working on next generation SIM card called SIMFi.

With SIMFi, you can convert a phone into a WiFi hotspot. The phone would use HSPA/LTE for data connectivity and at the same time it would broadcast WiFi signals for any equipment to connect to these signals and browse the web. Power consumption information have not been mentioned which I am sure would be a problem for the phone.

SIMFi Removes the need for additional accessories to facilitate transmission services (e.g. MiFi, USB modem, PCMCIA…) and can make connectivity a lot simpler, straigtforward and cheaper.




SIMFi specifications
  • SIM card compatible with the latest telecom specifications.
  • SIM card: ISO 2FF plug-in
  • The mobile phone does not need any special features.
  • Modem WiFi integrated in the SIM card, works with 802.11b.
  • The modem is guided by the SIM card's tools.
  • Energy-saving features (works with 2G and 3G).
  • The aerial is adaptable, allowing short- and long-range operations (from 2 cm to 30 m) managed by the SIM card's tools.

Monday, 27 September 2010

HeNBs (Femtocells) and eNBs Handovers

An excerpt from presentation by Dr. Doug Pulley, picoChip. The presentation is available to download from here.

Friday, 24 September 2010

Mozilla Seabird – A Community-driven Mobile Phone Concept

Since Mozilla Labs launched the Concept Series with an open call for participation we’ve had thousands of people join in, share ideas and develop concepts around Firefox, the Mozilla projects and the Open Web as a whole.

In response to our open call Billy May, in early 2009, produced a throw-away concept for an “Open Web Concept Phone”. Working directly off of that community feedback, Billy has since finished the exploration with his concept “Seabird”.

The following write-up is by Billy May and explores what an Open Web phone might look like:




The Mozilla Seabird, part of the Mozilla Labs’ Concept Series, is an experiment in how users might interact with their mobile content as devices and technology advances. Drawing on insights culled from the Mozilla community through the project’s blog, a focus quickly developed around frustrating physical interactions. While mobile CPUs, connectivity and development platforms begin approaching that of desktops, the lagging ability to efficiently input information has grown ever more pronounced.

More details here.

Wednesday, 22 September 2010

SS7, IMS, SIP and Diamater


Going through my pile of 1 million things to read before I die, I came across this presentation by Tekelec with regards to why Diamater and SIP would be used instead of SS7 in LTE and IMS. The slide in the picture above shows the comparison of SS7 and Diamater.

More and more operators are asking for replacement of SS7 with the Diamater interface. The main reason being that it has been adopted by 3GPP and when we move to an all IP network as in case of LTE it makes sense to have Diamater instead of SS7. There is a good description of Diameter on Wikipedia (cant guarantee the accuracy though) here.

You can read more about SIP at the Tekelec blog here.

There is also an interesting Radvision presentation on Slideshare that I have embedded below: