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Interoperability and global roaming in UMTS & GSM

Mar 14, 2012 at 4:20 am in 3G, GSM by support · Leave a Comment »

Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular technology for networks based on the GSM standard. Developed by the 3GPP (3rd Generation Partnership Project).

UMTS phones (and data cards) are highly portable—they have been designed to roam easily onto other UMTS networks (if the providers have roaming agreements in place). In addition, almost all UMTS phones are UMTS/GSM dual-mode devices, so if a UMTS phone travels outside of UMTS coverage during a call the call may be transparently [read more →]

by support

How pricing dynamics affect mobile usage

Sep 2, 2011 at 3:46 pm in Telephony by support · Leave a Comment »

Total global mobile voice minutes reached an estimated 1.6 trillion in 2010, a figure some ten times greater than the corresponding amount in 2001. This means that the actual usage of mobiles has grown almost twice as fast as the number of connections, which grew from around 950 million to 5.4 billion over the same nine year period. This is equivalent to an increase from three to five hours of call time per user per month across the world, and [read more →]

by Shri

Diameter Protocol – an Overview

Aug 8, 2011 at 4:49 am in LTE by Shri · Leave a Comment »

Diameter is an AAA (Authentication, Authorization and Accounting) protocol initially developed by IETF for the applications such as network access and IP mobility. It is a base foundation protocol to provide AAA services like Delivery of AVPs (attribute value pairs), Negotiation Capabilities, Routing Capabilities and Error Handling to new access technologies.

Authentication, Authorization and Accounting (AAA) protocols such as TACACS and RADIUS were initially deployed to provide dial-up PPP and terminal server access. Over a time, with [read more →]

by Shri

GSM: Physical & logical Channels

Aug 1, 2011 at 9:21 am in GSM by Shri · 3 Comments »

GSM: PHYSICAL AND LOGICAL CHANNELS

GSM uses a mix of Frequency Division Multiple Access (FDMA) and Time Division Multiple Access (TDMA). FDMA parts involves the division by frequency of the 25 MHz bandwidth in to 124 carrier frequencies (Also called ARFCN) spaced 200 KHz for GSM-900. For GSM-1800 frequency spectrum of 75 MHz bandwidth is divided in to 374 carrier frequencies spaced 200 KHz. TDMA further divides each carrier frequencies in to 8 time slots such that each carrier frequency is [read more →]

by Imthiyaz Ali

BEAM DIVISION MULTIPLE ACCESS (BDMA) FOR 5G

Apr 4, 2011 at 12:19 am in 5G by Imthiyaz Ali · 5 Comments »

The goal of mobile communication systems is to provide improved and flexible services to a larger number of mobile users at lower costs. This objective results in a big challenge for the wireless technology that is increasing system capacity and quality within the limited available frequency spectrum. The challenge in mobile communication system is to communicate using limited frequency and time. In order to achieve this target multiple access technique is required. There are Frequency Division Multiple Access [read more →]

by Harsha Gopalakrishnan

5G – What this new technology have for us?

Mar 8, 2011 at 4:00 pm in 5G by Harsha Gopalakrishnan · 1 Comment »

It is a commonly said sentence that “When the technology advances, the “next” upgrades must be in planning and development phases while its predecessors are being deployed”. This is exactly true with all mobile telecommunications. From its basic conception to the time of roll-out took almost ten years for 2G; a same situation occurred in the case of 3G, Although it begun its service in 2001/2, it had taken another 10 years to get established in India. Now [read more →]

by Imthiyaz Ali

First research paper on 5G networks

Mar 5, 2011 at 7:21 pm in 5G, featured by Imthiyaz Ali · 5 Comments »

Please register to download this file. Its Free 5G The NanoCore (1.2 MiB, 571 hits)

This is believed to be the first research paper that takes a view of 5G networks form the next generation telecommunication perspective. This research paper will show a personal view on 5G networks, especially for Operators, services providers and R&D group. Perception of “5G – The NanoCore” is based upon the convergence of existing technologies. This paper focus on developments and technologies [read more →]

by Ashish Banerjee

Telecom Financial Inclusion Convergence : India

Mar 1, 2011 at 9:07 pm in m-commerce by Ashish Banerjee · Leave a Comment »

Telecom, Banking and e-Governance are converging in India, thanks to policy intervention of the Indian Financial Regular, RBI.

RBI has issued guidelines for pre-paid payment instrument, under the Payment and Settlement Act 2007.

In its guidelines document, RBI defines four categories of pre-paid instruments:

Closed: These are the pre-paid charge cards issues by Telcos, commonly known as top-up cards.
Semi Closed: These instruments allows for paying for goods in pre-defined establishments having explicit agreement to accept [read more →]

by LT contributor

Do you know what is mobile Health?

Feb 28, 2011 at 10:03 pm in Telephony by LT contributor · Leave a Comment »

mobile-based or mobile-enhanced health solutions that broaden the quality, access and efficiency of health care and services.

One of the biggest challenges faced globally is how to make high-quality healthcare affordable and accessible for all. As the population expands and ages in developing countries the world is spending an increasingly high proportion of its gross domestic product on healthcare. Governments, individuals and private insurers worldwide are urgently seeking more cost-effective ways of preventing and treating chronic diseases and other debilitating conditions.

By [read more →]

by Edgar Martinez

Standards, Services and Patents

Feb 16, 2011 at 11:22 pm in Telephony by Edgar Martinez · Leave a Comment »

Standards

Standards contribute to a harmonized market for telecommunications networks and services. Not all network operators embrace these benefits like the old BELL system but, standards are here anyway and in some cases forced by law:

Benefits

The manufacturer; he can sell the same equipment to many customers, including network operators and consumers in many countries. He has one set of technical requirements which are recognized by authorities in many countries.

The network operator, who can build equipment built by a number of different [read more →]