Computer scientists are developing ways to use mobile phones to exchange data without using the phone’s network, instead of communicating directly with cellular towers, base stations, and the occasional wireless network.

These scientists  believe that spreading data virally could open up a whole new manner of applications on peer-to-peer mobile device networks, known more formally as “pocket-switched networks.” Such an ad hoc network–sort of a Sneakernet on steroids–could allow victims of a natural disaster to pass messages from one person to another even if the cell towers are destroyed. In another scenario, visitors to specific locations could have important information forwarded to them via the local folks’ devices. And groups of friends could poll each other on where to eat dinner that night, without using the Internet.

Technologies such as pocket-switched networks are a form of delay-tolerant networking, such as the Interplanetary Internet. Delay-torrent networks are part of a class of infrastructure that includes any collection of occasionally connected nodes that could be disconnected from the network for a long time and forward messages opportunistically.

Pocket-switched networks typically consist of a sparse collection of devices that are disconnected much of the time and are, of course, mobile. Communications are accomplished through Bluetooth or wireless connections between devices using a publish-and-subscribe technique dependent on the content preferences of the device’s owner.

“It is an infrastructure-less approach,” says Kevin Fall, a principal engineer at Intel Research Berkeley and an expert on delay-tolerant networking. “You don’t need base stations, you don’t need cell towers, you just have to carry around a device that can connect to other devices.”

Yet, what the technology does not have is simplicity. Crowcroft and his team from the University of Cambridge hope to solve that problem.

Via Technology Review. Read more after the break.

. Last week, the research group unveiled a programming language designed to make developing complex programs far simpler. The language, known as the Data-Driven Declarative Networking (D3N) language, allows simple programs to take advantage of inherent characteristics of pocket-switched networks, including asynchronous communications and simple-to-express queries. The language is declarative, allowing the programmer to focus on the application logic instead of the algorithms specific to pocket-switched networks.

“One of the goals is to keep it very simple so that people can make very complex, very interesting applications easily,” Crowcroft says.

The D3N language is based on the F# project from Microsoft. The language adds concurrency control to handle the ad hoc nature of exchanging data between a variable number of asynchronous nodes. Query and pattern-matching functions make it easy to select data from the nodes available in the local peer-to-peer network.

Last year, a group of researchers built a different programming framework, known as Haggle, for pocket-switched networks. The Haggle library adds collections of code to support manipulating data on pocket-switched networks using a variety of platforms, including Windows and Windows Mobile, Mac OS X and iPhone, Google’s Android, and Linux.

The difference between Haggle and D3N is whether the intelligence–the knowledge of how to interact with pocket-switched networks–is inherent to the language or in a separate code library. D3N builds knowledge about the way pocket-switched networks work into the programming language. This makes programming for pocket-switched networks simpler. Programs written in D3N can, for example, grab data from the network with a simple command. Developers working with Haggle can still grab that data, but the programming is more complicated.

Launches largest wireless broadband Internet service in Pakistan

Doha, June 30, 2009: wi-tribe, a Qtel Group company, today announced the official launch of its wireless broadband service in Pakistan, its largest market to date. The launch phase will include the cities of Karachi, Islamabad, Lahore, and Rawalpindi.

“Today, a new milestone is achieved in the evolution of wi-tribe and the realization of our vision to become one of the top 20 telecom players by 2020,” said Sheikh Abdullah Bin Mohammed Bin Saud Al-Thani, Chairman of The Qtel Group. “Following our launch in Jordan, Pakistan marks a major stepping stone towards our expansion strategy and our intention to leverage the scale and strengths of The Qtel Group in order to deliver the latest technologies to our customers and continue to enhance services across our operations,” added Sheikh Abdullah.”

Dr. Nasser Marafih, CEO of The Qtel Group and Chairman of wi-tribe, commented: “Consumer broadband is at the heart of the Qtel Group strategy and a major pillar of growth. The launch of wi-tribe in Pakistan is a very important moment for all of us at The Qtel Group as it reflects a major stepping stone towards our commitment to bring broadband wireless access to more people, to connect individuals and businesses more easily and to improve access to the internet in all new and emerging markets.

“Broadband penetration levels in new emerging markets are currently very low compared to markets in the region. However, consumer demand for wireless services is growing at a fast pace. So we will continue to focus on this area in the future as we see good business opportunity and significant growth potential,” added Dr. Nasser.

Shaikh Abdulrahman Ali Al Turki, Chairman and CEO of A.A.Turki Group A.A. Turki Group of companies (ATCO), commended on the growth and success achieved by the wi-tribe group stating, “At ATCO we are extremely pleased with wi-tribe’s developments since its establishment in 2007. The addition of Pakistan to our tribe is proof of our firm commitment to bridge the digital divide and bring to emerging markets the best in connectivity and ease of access. It is about time these markets got excellent quality service.”

“wi-tribe uses WiMAX technology to provide customers with the advantage of broadband internet access wirelessly, giving them the option of accessing the internet whenever and wherever they choose within the network area,” commented Sami Hinedi, CEO, wi-tribe Group. “We strongly believe in improving the lifestyle of our customers by understanding their needs and offering them the best personalized customer experience. We want to provide solutions that are simple, easy and valued by individuals, businesses and the Government,” he added.

wi-tribe is a focused and dedicated consumer wireless broadband provider and will offer instant connectivity with applications tailor-made and simplified to accommodate the needs of every customer. The wi-tribe service will deliver broadband internet access through the ‘plug in and play’ option offering speeds of 256Kbps, 512 Mbps, and 1 Mbps. The process of becoming a wi-triber is extremely simple and beneficial. The wi-tribe service uses an efficient and highly effective plug and play modem which provides online access on the go. Internet users in Pakistan will experience the best in consumer wireless broadband service and wi-tribe’s unique customer care experience.

The official website has details for packages that wi-tribe is offering in Pakistan.

With this launch the WiMAX competition will definitely boom in Pakistan.

Those who have used the wi-tribe services, do share your experience with us.

Qubee is a new and exciting company providing fast, reliable and competitively priced broadband internet services to residential and business customers across Pakistan. We believe that everyone should be able to enjoy trouble-free access to the internet and the world of opportunities that it brings. Our aim is to make a magical internet experience available to everyone, everyday, without exception.

Qubee is the creation of a group of global telecoms professionals who saw that a new technology called WiMAX could really change the internet experience for millions of people worldwide.

The details of the tariff and packages offered is not yet mentioned on their website, www.qubee.com.pk.

They are starting in Karachi, but quickly plan to expand thier network and cover other cities nationwide. The current coverage area for Qubee can be seen on the following link.

Qubee’s launch right after the launch of wi-tribe reminds me of the year 2005 when at the GSM front we saw Warid following Telenor’s launch. Nevertheless Qubee will bring on-air the fourth WiMAX operator of Pakistan, the other three being Wateen, Mobilink Infinity and the recent Wi-tribe. Will this start a price/data-rate war among the WiMAX operators? This will only become clear with time.

The paper is titled “Expanding the Reach of Health Care in Developing Nations with WiMAX.” Here’s the direct link to the pdf. It talks about various case studies of using WiMAX connectivity to expand and improve health care in developing nations. However there are no details about the costs and the infrastructure hurdles which are so critical to WiMAX.

The paper mentions a project in Pakistan.

In Pakistan, Cisco is working on a trial that combines satellite and WiMAX connectivity to mobile units that provide earlier oncological screening to rural patients. Female patients feel more comfortable seeking care in a familiar environment, close to their homes. Earlier screening allows doctors to detect breast cancer in women when it is still treatable.

As illustrated below, WiMAX may initially be used mainly as a backhaul technology to provide basic data and voice connectivity to clinics. At a later stage, mobile applications will take on a larger role as network coverage, low cost devices, and mobile telemedicine applications become available.

The paper lists the key benefits WiMAX brings to telemedicine as:

• True broadband connectivity (2–4 Mbps in the downlink, 0.5–1.5 Mbps in the uplink) to enable transfer of large data files and video applications. In cellular networks, uplink speeds are typically substantially lower, slowing down transmission from the mobile workers back to the hospital. WiMAX performance is achieved by using a new wireless interface with high spectral efficiency, and by using wider channels that can increase the overall network capacity.
• IP based technology, which brings lower complexity and costs in managing the network, facilitates the development of new applications or the adaptation of existing applications, and can be easily integrated within existing networks.
• Carrier grade reliability and security, due to the use of licensed spectrum and IP core network technology. WiMAX supports multiple Extensible Authentication Protocol (EAP) methods, Remote Authentication Dial In User Service (RADIUS), Diameter, Advanced Encryption System (AES), and Privacy Key Management Protocol Version 2 (PKM v2). Security is crucial to ensure protection of patient and epidemiological data.
• Quality of Service (QoS) and traffic prioritization mechanisms, to give priority to latency sensitive applications such as voice and video. This increases the robustness of numerous telemedicine applications that rely on voice and video traffic.
• Lower cost?per?bit than cellular networks. This makes the technology affordable for network operators to deploy and for health care providers to use for telemedicine applications.
• A wide range of devices with WiMAX chipsets embedded along with WiFi, at a very low additional cost. This gives health providers greater flexibility in choosing the best?suited devices that are within their budget.