UE Antenna Sizes on different frequencies

The biggest problem with Antennas for mobiles and now the tablets have been how to arrange antennas for MIMO since the wavelength needs to be λ/4. The picture gives an idea how the antenna size changes with different frequencies. Higher frequencies are better for having multiple antennas as their length and the distance between then decreases.

From a presentation by Shirook M. Ali, RIM in the 4th LTE North America Conference, 8 - 9 November
2011, Dallas, Texas, USA.

Dilbert Humour: '8G' instead of '4G'

Source: Dilbert

See Also: Dilbert Humour: So why is it called 4G?

Mobile standards & synchronization - Interesting presentation from Ericsson

Mobile standards & synchronization: 3GPP, etc.

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Mobile Video is more than 50% of the data traffic

With the popularity of video streaming, its no surprise that video is already more than 50% of the data traffic flowing through the network.

Reducing CSFB Timing with RRC R9 Optimisations

While in the initial testing CSFB timing used to be between 6-8 seconds, most Rel-8 phones can complete the CSFB procedure between 4-4.5 seconds. Unfortunately this is still a lot in terms of signalling. To reduce this in Rel-9 there is a simple optimisation that has been done.

In the RRC Connection Release message, there is a possibility to add UTRAN/GERAN System Information messages. In the picture above, I have only shown UTRA System Information but a similar picture can be drawn for GERAN.

Once all the Mandatory SIB's are sent to the UE then it can immediately camp on without the need to read any other additional system info. This will reduce the CSFB time between 1-2 seconds.

The lesser the CSFB time, the better the Quality of end user experience

Nice Pie Chart on different Android Devices

Click to enlarge

I guess Pie charts like these can convey more information then writing about the percentages of devices sold. Maybe we should use them more often to represent information.

Source: From a presentation by Deutsche Bank in the 4th LTE North America Conference, 8 - 9 November 2011, Dallas, Texas, USA

Quick update on LTE Release 11 Work and Study Items

LTE Release 11 Work and Study Items

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Nice work by Nomor. Available to download from here.

Dilbert Humour: Smartphone Interface Rage

Source: Dilbert

LTE Capacity Analysis

From the 4th LTE North America Conference, 8 - 9 November 2011, Dallas, Texas, USA
Presented by Bill Ingram, Cricket Communications, November 8, 2011

Smart Metering for Dummies

Smart Metering for Dummies LOGICA

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