Saturday, 21 January 2012
Monday, 5 December 2011
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.
Wednesday, 16 February 2011
Tuesday, 15 February 2011
Tuesday, 6 July 2010
Friday, 2 July 2010
Image Source: Presentation by Robert Crow in The Future of Wireless International Conference 2010
Wednesday, 30 June 2010
Tuesday, 20 April 2010
Research in Motion Ltd says it is far from certain that video will become the "killer app" that defines smartphones, but even so the BlackBerry maker says developing more efficient delivery is necessary to prevent video from choking airwaves.
The popularity of feature-rich smartphones such as the BlackBerry, Apple's iPhone, and Motorola's Droid has surged, but they use as much as 30 times as much bandwidth as regular mobile phones to run the applications, or "apps," that make them so popular.
The surge in traffic triggered by video and other apps has led to more dropped calls and choppy service. As video on smartphones becomes more popular, it is leading to more congestion, and forcing carriers to spend billions to upgrade networks and buy more wireless spectrum.
"I still don't know and I don't think anyone knows if video is a killer app for smartphones," RIM Co-CEO Mike Lazaridis said at a conference hosted by a unit of Toronto Dominion Bank on Friday. "I don't particularly think it is."
Lazaridis said that even if video did not become the defining app for smartphones, it is already presenting a big challenge to networks.
Analysts have praised Waterloo, Ontario-based RIM for its relatively bandwidth-light BlackBerrys, which route most emails through the company's own servers. This is a legacy of the company's earlier days when it was seeking a faster, more secure mobile email service.
RIM also sends web browsing, Facebook, Twitter, and data from a wide number of BlackBerry apps through its own servers.
That makes browsing and using apps on a BlackBerry three to eight times as efficient bandwidth-wise as on the devices of RIM's rivals, said Lazaridis.
"What that means for the carrier, though, is after they have committed all those billions of dollars on new network technology and new network spectrum, they can have three BlackBerrys using the same network capacity as one of the other smartphones."
Lazaridis said RIM would invest more in technology that provides efficiencies to carriers, including when it comes to video.
He pointed to RIM's 2006 acquisition of SlipStream, which specializes in data acceleration, compression and network optimization technology.
"They had some amazing technologies for compressing everything from web content, documents, and video. So, you never know, the research that we do is very important, it's always borne fruit and we are hoping that we can continue to ... provide tangible efficiencies to the carriers."
Sunday, 3 May 2009
When Fraser Edward joined Research In Motion (the company behind BlackBerry) four years ago, the device maker had only three partners for mobile healthcare applications, Edward said during a panel session at the American Telemedicine Association in Las Vegas. Today, Edward is RIM’s business manager of market development for Health & Life Sciences, and the company has 30 healthcare applications in its recently launched BlackBerry App World store.
During his presentation, Edward showed a slide of 12 mobile health companies that are “BlackBerry Solutions Partners,” which means they are clients of RIM to take advantage of the company’s marketing channels, developer know-how and more. Here’s a rundown of the 12 companies Edward counted as Solutions Partners and the mHealth buckets he put them in:
AllSportGPS — powered by Trimble — GPS-enabled mobile application for coaching on cycling, mountain biking, running, walking and other sports activities.
BonesInMotion – GPS-enabled app targeting those participating in outdoor activity 3 or more times a week: fitness walking, running, cycling, hiking, mountain biking, GeoCaching, and other outdoor activities.
BodyMedia – Wearable, “fashionable” body monitors that record and transmit a variety of physiological data to the BodyMedia’s website.
Myca - Enables nutrition professionals connect with their clients through video consults, messaging, a personalized website, and a picture food journal.
Sensei - Makes mobile health applications for a wide variety of handsets, but most recently launched a couple of iPhone applications, including one for diabetics.
Personal Health Records
Tolven - Open source healthcare solutions developer of PHRs, clinician health records and health informatics.
CapMed - Offers PHRs for families to keep track of their own health data.
Corporate Wellness/Chronic Disease Management
t+Medical - Offers disease management and remote monitoring services that work with most mobile phones and also does some work with clinical trial management.
Medtronic - Develops medical devices and services to help people better manage chronic diseases.
Healthanywhere - Offers applications that let users monitor their health from a smartphone, PC or from a “dedicated Healthanywhere supplied platform.”
Confidant - Provides a mobile-phone based service that includes feedback, coaching and context to a patient’s chronic disease management routine, while simplifying and automating the flow of information between patients and their healthcare providers.
RIM also partners with chipmaker AMD for Corporate Wellness and Chronic Disease management.
More healthcare/fitness apps for Blackberry can be seen here.