Friday 18 June 2010
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
TR-069 has been standardised for remote Configuration Management. The slide above is from a presentation by Andy Gothard in Femto Forum. The presentation below sheds more light on TR-069 for Femtocells.
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. Related Post: When Femtocells become Picocell.
Monday 14 June 2010
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.The government of mainland China has formulated a general plan to launch triple-play services, integrating telecom networks, broadcast and TV networks, and Internet together.
From 2010 to 2012, China will focus on the trial integration of broadcast and TV services and telecom services (including Internet services), dealing with any related policies. From 2013 to 2015, based on the trial experience, China will promote the integration nationwide.
In the coming five years, various sectors will prepare in different ways to meet the goals stated in the general plan. Telecom operators such as China Mobile, China Unicom, and China Telecom will invest more to promote IPTV services and accelerate FTTX deployment. Meanwhile, broadcast and TV operators will accelerate cable-TV network integration and interactive TV services development and will more actively develop value-added Internet services.
Broadcast and TV operators are currently strong in video content and wireless broadcast, while telecom operators own two-way fixed-line networks, mobile networks, and Internet services.
The differences between broadcast and TV operators across different regions and the uneven distribution of telecom fixed-line networks and mobile networks can offer cooperation opportunities.
Notably, almost all provinces of China already have launched IPTV services. The total number of IPTV service users in China has exceeded 5 million. However, problems with IPTV content must be solved, and the price for IPTV services also needs to be lowered to attract more users and compete with digital TV.
Meanwhile, the transformation of cable-TV networks from one way to two way has been sped up. Two-way cable-TV networks now cover over 24 million users. In the coming three years, broadcast and TV operators will invest over US$5 billion to continue to change 100 million one-way cable-TV links into two-way cable TV.
Eventually, through cable-TV networks, broadcast and TV operators hope to run Internet access services. This has been in trial use in some provinces. In order to run Internet access services, however, broadcast and TV operators need to rent bandwidth from telecom operators, greatly increasing the potential cost of service.
Another aspect of the triple play involves the conversion of mobile services to triple play. Mobile-phone TV is an emerging service in China. Up to now, mobile-phone TV services based on the China Multimedia Mobile Broadcasting (CMMB) standard have reached 1.5 million users. However, the current CMMB standard only supports one-way communication. So the users can only receive broadcast-TV programs via mobile.
On the other hand, mobile services based on the broadcast multicast Multimedia Broadcast Multicast Service (MBMS) standard serve about 200,000 users. The growing 3G user base will convert to the MBMS standard. Additionally, the government policy will affect the mobile-phone TV market too. So it is not clear yet which mobile-phone TV standard will dominate the industry in the future.
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
Interesting article on Voice options in LTE
Interesting article summarising the Voice issues in LTE from Total Telecom Magazine.
The complete issue of the magazine is available here.
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.
It was very interesting to hear that the power generated using the Solar and Wind approach is generally in surplus and this extra energy could be sold to the power companies or can be used to provide an outlet point where the people can come and charge their phones.
The return of investment (ROI) for these kind of deployments could be as low as 2 years and can be as high as 4 years. The time for ROI will be reduced for countries where diesel (used for generators) is expensive and will be increased when diesel is cheap. That is why we may not find environmently friendly approaches in Middle East for quite some time because of cheap oil.
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