Tuesday, 22 June 2010
Say no to texting and yes to Swype
Monday, 21 June 2010
LTE HeNB Options
In my earlier post I had a picture of LTE Home eNodeB architecture. There is a possibility of multiple ways in which Home eNodeB can be connected. A slide from Andy Goddards presentation in LTE world summit summarises the different approaches.Saturday, 19 June 2010
Dilbert Humour: Apps and Dates dont go together
Friday, 18 June 2010
NTT DoCoMo's latest LTE Initiatives
Thursday, 17 June 2010
Samsung v/s Apple Display War

In launching the new iPhone at the Worldwide Developers Conference in San Francisco last week, the Apple front man claimed the screen's IPS LCD technology, developed by LG and Hitachi, also offered superior colour resolution and was “quite a bit better” than Super AMOLED overall.
“You can‘t make an OLED display with this type of resolution right now,” Jobs said on stage. “Retina Display is going to set the standard for displays for the next several years. We don’t think anybody’s going to come close.”
But Samsung disagrees, claiming that the difference in the total number of pixels over Super AMOLED's 800 x 480-pixel resolution is all but negligible to the naked eye, and pointed instead to Super AMOLED's emissive lighting and its ability to deliver far better colour and contrast than more traditional backlit screens like the Retina Display.
"The visibility difference is only 3 to 5 per cent. But raising resolution to that level increases battery consumption by 30 percent,” a Samsung spokesperson told the Korean Herald. “Structurally, IPS LCD technology cannot catch up with AMOLED display technology,” .
One of Super AMOLED's chief attractions is the reduced strain on the battery thanks to that lack of backlighting, with Samsung's new Wave smartphone offering double the battery life of the iPhone. In addition, the Samsung screen offers a contrast ratio thought to be around 1,000,000:1, dwarfing the iPhone's figure of just 800:1.
According to Jobs, the iPhone's screen's 326 pixels per inch meant it had a higher resolution than the human eye “The display is your window into the internet, into your apps, into your media, into your software,” he said. “Retina Display is the best window on the planet.”
Its good to see the Mobile Display evolving but not sure if everyone cares about it. There is a good comparison of AMOLED v/s LCD with lots of pictures here, which will give you a good idea. More details here as well.
Wednesday, 16 June 2010
Femtocell configuration via TR-069

Tuesday, 15 June 2010
'Greater' Femtocells
An interesting slide from the presentation by Prof. Simon Saunders, Chairman of Femto Forum in LTE World Summit. The slide throws more light on the Greater-femtocells I blogged about last year. Monday, 14 June 2010
Conformance, Interoperability and Field testing via GCF
Sunday, 13 June 2010
MBMS, Digital TV and IP Triple Play in China
Apparently according to this report by Xuefei (Michael) Peng, MBMS is alive and kicking in China with around 200,000 users already. I cant find more info so if anybody who can fill more info is more than welcome.Thursday, 10 June 2010
Relationship between frequency & capacity, in-building penetration & cell size

Interesting picture from a presentation by Prof Ed Candy Hutchison Whampoa Europe & 3 Group Europe in the LTE World Summit.
Wednesday, 9 June 2010
Voice over LTE - GSMA Presentation
Interesting article on Voice options in LTE
The complete issue of the magazine is available here.
Tuesday, 8 June 2010
Running live networks on Renewable Energy sources
We have been hearing for years that Solar energy could be used to run remote BTS/Node B so i was glad to see that they are deployed in practise and are working well. It was very interesting to see hear Pradeep de Almeida, Group Chief Technology Officer, Dialog Telekom Plc, Sri Lanka in the LTE World Summit.The picture above lists the features from an ideal renewable energy powered BTS or Node B (or eNodeB for that matter). The picture below shows one of the real life deployments in Sri Lanka.
Saturday, 5 June 2010
Your number’s up

In what sounds like the plot of a horror movie, a Bulgarian cellphone company has reportedly suspended the number 0888-888-888 after every single person who was assigned to it in the last 10 years died.
A spokesperson for Bulgarian firm MobilTel refused to comment, telling the Telegraphthat they don’t discuss individual numbers. But the newspaper tracked down the phone number’s eerie history and discovered that each owner had met an untimely end.
The first owner was the former MobilTel CEO, Vladimir Grashnov. In 2001, the 48-year-old died of cancer, although some speculated that he was radioactively poisoned by a business rival.
The number was then passed on to Konstantin Dimitrov, a Bulgarian mafia boss and owner of a $775-million drug smuggling empire. He was shot by a lone assassin in 2003 while eating out with a model in the Netherlands. He was 31.
The third and final owner was Konstantin Dishliev, a real-estate-agent-by-day and a drug-lord-by-night, who secretly ran a massive cocaine trafficking ring. In 2005, after police intercepted $200-million of the white stuff on its way in from Columbia, Mr. Dishliev was assassinated outside a restaurant in Bulgaria’s capital city.
After being temporarily suspended during the investigation into Mr. Dishliev’s death, the number is said to have been de-activated for good. Now anyone who calls is greeted with a recorded message saying the phone is “outside network coverage.”
So are the deaths merely coincidence or proof of a cell phone curse?
Whatever the case, MobilTel could stand to profit off the number by selling it to someone in China, where the number eight is considered lucky. In 2003, a Chinese airline paid 2.33-million yuan (US$280,723) for the phone number 8888-8888.
Thursday, 3 June 2010
Quick preview of 3GPP Release-11 Features and Study items

Advanced IP Interconnection of Services
Release 11 Studies
Study on IMS based Peer-to-Peer Content Distribution Services
Objectives of this study item are:
Without technical alternative to using public numbering resources as addresses, and considering the current forecasts and pending applications for numbers made to numbering plan administration agencies, there is a significant risk that some national numbering/dialling plans will run out of numbers in the near future, which would impact not only these M2M services but also the GSM/UMTS service providers in general.
The Objective is to determine an alternative to identify individual devices and route messages between those devices. Requirements for this alternative include:
Wednesday, 2 June 2010
ZTE shows off its green credentials
ZTE has long been focussing on green(er) network and recycling. They launched their new generation 'green base stations back in 2006. They have also been recently cited for their energy saving technology. They also have a solar powered phone which is unfortunately not available in UK. Their Omni-RAN network can help reduce the OPEX by two thirds. Their focus has not only been on Mobile phones and networks but on the fixed lines as well.So it was not at all surprising to hear Xiaodong Zhu, CTO of ZTE European marketing in the LTE World Summit talking about the end to end green networks. Green technology is not only helpful to for the 'green credentials' but it can also help reduce Opex which can help recover any additional investments (if any).
More manufacturers will hopefully follow the lead.
Tuesday, 1 June 2010
LTE Femtocell Enhancements for Release-9

Monday, 31 May 2010
Using Femtocells abroad Illegaly
Back in 2008, I blogged about Femtocells and stealing of Spectrum. Since the rollout of Vodafone Suresignal, I am seeing people discuss it more and more about using the Femtocells abroad. I should say as I have in the past that this would be illegal and I wouldn't encourage anyone to do it but as couple of people have mentioned to me in private that they have managed to do it I would like to hear if someone else has managed this feat.Sunday, 30 May 2010
ng-connect LTE car from ALU
Friday, 28 May 2010
UMTS/HSPA State Transition Problems to be solved with LTE
The problem in UMTS/HSPA is that these state transitions take quite some time (in mobile terms) and can slow down the browsing experience. Martin has blogged about the state transition problems because of the keep alive messages used by the Apps. These small data transfers dont let the UE go in the IDLE state. If they do then whole raft of signalling has to occur again for the UE to go to CELL_FACH or CELL_DCH. In another post Martin also pointed out the sluggishness caused by the UE in CELL_FACH state.

Mike Thelander of the Signals Research Group presented similar story in the recently concluded LTE World Summit. It can be seen from the figure above that moving from IDLE to CELL_DCH is 1-3secs whereas FACH to DCH is 500ms.
In case if some Apps are running in the background, they can be using these keep alive messages or background messages which may be very useful on the PC but for the Mobiles, these could cause unnecessary state transitions which means lots of signalling overhead.Thursday, 27 May 2010
LTE will be known as 4G!

- 5G - Not sure if people will buy this. Assuming that LTE-Advanced specs are ready by March 2011 (as is predicted) then people wont be ready to jump from 4G to 5G this soon.
- 4G+ - Not sure if this sounds sexy enough
- Super 4G - Boring
- Turbo 4G - reminds me of F1
Police call for remote button to stop cars
From The Guardian:'Providing an effective means to remotely stop a vehicle is fast becoming a priority,' Hammond told a European conference. 'The development of a safe and controlled system to enable remote stopping has the potential to directly save lives.'
Wednesday, 26 May 2010
Small cells and Wireless Capacity Growth
Self explanatory slide showing the impact of Small cells on the capacity growth. This is probably the best way to further increase the capacity.Tuesday, 25 May 2010
Quality of Service (QoS) and Deep Packet Inspection (DPI)
This QoS can be varied based on deep inspection of the packets which can tell the operator as to what service a particular packet belongs to. The operators can thus give higher priority to the services and applications that are recommended by them and also block certain services that can be deemed as illegal or unproductive (like file sharing or P2P).Continuous Computing claims to be one of the market leaders in producing the DPI systems. You can read this article by Mike Coward who is the CTO and Co-founder of Continuous computing here.
There is also this very interesting paper on QoS control in 3GPP EPS which is available freely here.Monday, 24 May 2010
The 'Cost per Bit' issue...
A slightly older report from Ericsson suggested that from operator point of view, 1GB data transfer can cost as low as 1 euro.
So if we now plug in the above information into the slide below, presented by Moray Rumney of Agilent in the LTE World Summit, we can see that the operators have been earning massive profits on our behalf.

With Mobile broadband becoming more common and cheaper, users may not be willing to pay any more than they are now. At the same time, they may expect the speeds to keep increasing at regular intervals. The operators will soon be forced (if not already doing so) to offer QoS based packages which can help them boost their revenue and provide better QoE to the higher paying users.
I will cover this issue of QoS, QoE and DPI in the upcoming posts.
If you are wondering along the lines of how to reduce this cost per bit then I would recommend you to go back and have a look at this discussion on Martin Sauter's blog.
Saturday, 22 May 2010
50 Billion Connected Devices by 2020 (2025?)
Back in April, Hans Vestberg, CEO and the President of Ericsson declared that there will be 50 Billion connected devices by 2020.Thursday, 20 May 2010
Redefining the wireless Quality of Experience (QoE) with LTE
Wednesday, 19 May 2010
Using LTE to boost ARPU
Agilent Demo at the LTE World Summit 2010
Tuesday, 18 May 2010
Anritsu Demo at the LTE World Summit 2010
Monday, 17 May 2010
Mobile Phone Developments May 2010








