TDMA

Majority of Rogers' Remaining TDMA and Analogue Subscribers Already Moved to GSM

admin — Thu, 03 May 2007 12:56:40 +0000

Remaining TDMA/Analogue subscribers urged to make the free switch and enjoy Canada's most advanced and reliable network

Rogers Wireless has announced that nearly 200,000 former TDMA/analogue customers have already made the switch to GSM in advance of the May 31, 2007 turndown.

On January 10, 2007, Rogers announced that it would be turning down its older TDMA and analogue networks effective May 31, 2007 and move the remaining customers on these older networks onto its advanced GSM network. TDMA and analogue customers were advised that they would keep their existing phone numbers and service plans after the transition and have been provided a free GSM phone.

"The program has been tremendously successful," said John Boynton, Senior Vice President and Chief Marketing Officer, Rogers Wireless. "The majority of our customers have chosen to transition to our more advanced GSM service, and are now enjoying the benefits of being on Canada's most reliable network with the fewest dropped calls," he added. » read more »

VeriSign Provides Clearing, Settlement and Exchange Services to Third Largest GSM Wireless Provider in the United States

admin — Wed, 21 Mar 2007 12:25:34 +0000

Industry leading GSM solution provides Dobson Communications’ 1.7 million customers secure, end-to-end bill processing for today’s emerging wireless transactions

VeriSign, Inc. has announced it will provide Dobson Communications, the third largest Global System of Mobile Communications (GSM) wireless provider with approximately 1.7 million customers in the U.S., with VeriSign® Settlement and Exchange Services beginning in April 2007.

VeriSign® Settlement and Exchange Services platform allows Dobson to know their financial position with roaming partners for voice and data traffic and provides customized Web-based reporting systems.

“The convergence of old and new services and a growing number of records from multiple roaming partners continues to increase the complexity of rating, billing, clearing and settling for rural wireless service providers,” said Lee Huggins, vice president, VeriSign. “The unique ability to provide Dobson Communications with our bundled roaming and revenue assurance solution will help provide accuracy, timeliness and above all faster response to their customer needs.” » read more »

UWC-136

admin — Tue, 13 Mar 2007 12:36:43 +0000

UWC-136

A third-generation wireless standard proposal based on TDMA technology that was developed by the Universal Wireless Communications Consortium and is one of the 3G candidates submitted to the International Telecommunication Union by the United States. (Cingular)

TDMA

admin — Tue, 13 Mar 2007 12:32:43 +0000

TDMA (time division multiple access)

A digital air interface technology used in cellular, PCS and ESMR networks. TDMA allows a large number of users to access a single radio frequency channel without interference by allocating unique time slots to each user within each channel. (Cingular)

Time Division Multiple Access (TDMA) is a technology for shared medium (usually radio) networks. It allows several users to share the same frequency by dividing it into different timeslots. The users transmit in rapid succession, one after the other, each using their own timeslot. This allows multiple users to share the same transmission medium (e.g. radio frequency) whilst using only the part of its bandwidth they require. Used in the GSM, PDC and iDEN digital cellular standards, among others. TDMA is also used extensively in satellite systems, local area networks, physical security systems, and combat-net radio systems.

The name "TDMA" is also commonly used in America to refer to a specific second generation (2G) mobile phone standard, more properly referred to as IS-136 or D-AMPS, which uses the TDMA technique to timeshare the bandwidth of the carrier wave. » read more »

TD-CDMA

admin — Tue, 13 Mar 2007 12:32:19 +0000

TD-CDMA

A 3G proposal combining elements of TDMA and CDMA. (Cingular)

Multiplexing

admin — Tue, 13 Mar 2007 11:36:53 +0000

Multiplexing

When multiple phone calls are carried in the same frequency band at the same time. In wireless, major multiplexing methods include TDMA and CDMA. (Cingular)

In telecommunications, multiplexing (also MUXing) is the combination of two or more higher level channels into a single lower level channel such that a reverse process, known as inverse multiplexing, demultiplexing, or demuxing, can extract the original channels. The individual channels are identifiable by a predetermined coding scheme. (Wikipedia)

GAIT

admin — Tue, 13 Mar 2007 11:09:23 +0000

GAIT (GSM-ANSI 136-interoperability team)

Cingular Wireless is pursuing the deployment of a TDMA/GSM offering that will allow both GSM and TDMA customers to roam on each other's digital networks. A similar service already is deployed in the DCS markets, but only offers one way roaming from GSM to TDMA analog networks. (Cingular)

FWA (fixed wireless access)

admin — Tue, 13 Mar 2007 11:06:51 +0000

FWA (fixed wireless access)

Also known as wireless local loop. (Cingular)

Wireless local loop (WLL), also called radio in the loop (RITL) or fixed-radio access (FRA) or fixed-wireless access (FWA), is the use of a wireless communications link as the "last mile" connection for delivering plain old telephone service (POTS) and broadband Internet to telecommunications customers.

Nowdays there are various types of WLL systems.

These are available in Code Division Multiple Access (CDMA), Global System for Mobile Communications (GSM), IS136 Time Division Multiple Access (TDMA) as well as analog access technologies such as Advanced Mobile Phone System (AMPS), for which there will be independent standards defining every aspect of modulation, protocols, error handling,etc.

Fixed Wireless Terminals or FWT units differ from conventional mobile terminal units operating within cellular networks -such as GSM- in that a fixed wireless terminal or deskphone will be limited to an almost permanent location with almost no roaming or find-me anywhere facilities. » read more »

EDGE

admin — Tue, 13 Mar 2007 11:03:48 +0000

EDGE (enhanced data rates for GSM evolution)

Based on 8PSK modulation, EDGE provides 3G packet data throughput on GSM networks. (Cingular)

A technology that gives GSMA and TDMA similar capacity to handle services for the third generation of mobile telephony. EDGE was developed to enable the transmission of large amounts of data at a high speed, 384 kilobits per second. (Ericsson)

Enhanced Data rates for GSM Evolution, or EDGE, is a digital mobile phone technology which acts as a bolt-on enhancement to 2G and 2.5G General Packet Radio Service (GPRS) networks. This technology works in GSM networks. EDGE (also known as EGPRS) is a superset to GPRS and can function on any network with GPRS deployed on it, provided the carrier implements the necessary upgrades.

EDGE provides Enhanced GPRS (EGPRS), which can be used for any packet switched applications such as an Internet connection. High-speed data applications such as video services and other multimedia benefit from EGPRS' increased data capacity. EDGE Circuit Switched is a possible future development. » read more »

Dual mode

admin — Tue, 13 Mar 2007 11:01:41 +0000

Dual mode

Describes a handset that works on both analog and digital networks. (Cingular)

The phone is capable of accessing digital or AMPS channels to provide more consistent mobile service (Network- and subscription-dependent feature â€“ not available in all areas.) (Motorola)

Dual mode mobile phones work on more than one network (for example,TDMA and AMPS GSM and DECT). (Ericsson)

Dual band

admin — Tue, 13 Mar 2007 11:01:22 +0000

Dual band

Describes a handset that works on both 800 MHz cellular and 1900 MHz PCS frequencies. (Cingular)

A wireless phone that is capable of operating on two frequency bands such as the 900 MHz digital band and the 1800 MHz digital GSM band. The dualband phones can be used in Europe, Africa, and Asia. (Nokia)

Different mobile phone networks in different countries operate at different frequencies, which means that if you wish to use your mobile phone outside your home country, you generally need a handset that supports multiple frequency bands. A "dual-band" phone operates on two frequency bands, 900Mhz and 1,800Mhz, allowing you to use it in the UK and Continental Europe. (Motorola)

Dual band mobile phones can work on networks that operate on different frequency bands. This is useful if you move between areas covered by different networks. For example GSM 900, GSM 1800. (Ericsson) » read more »

CSD (Circuit Switched Data)

admin — Tue, 13 Mar 2007 10:47:14 +0000

CSD (Circuit Switched Data)

CSD allows a user to use their wireless handset as a modem for laptops, PDAs and other electronic devices via infrared ports or designated data cables. CSD also allows a user to access Wireless Internet via their wireless handset (handset must be WAP compatible). (Cingular)

Circuit Switched Data, often referred to as CSD, is the original form of data transmission developed for the TDMA-based mobile phone systems like GSM. CSD uses a single radio time slot to deliver 9.6 Kbits/sec data transmission to the GSM Network and Switching Subsystem where it could be connected through the equivalent of a normal modem to the PSTN allowing direct calls to any dial up service. As of 2006, some GSM-based service providers, Cingular et al, still provide CSD by request. » read more »

Air interface

admin — Tue, 13 Mar 2007 09:43:01 +0000

Air interface

The standard operating system of a wireless network. Technologies include AMPS, TDMA, CDMA and GSM. (Cingular)

In mobile communication, the air interface is the radio-frequency portion of the circuit between the mobile station and the active base station. (Wikipedia)

2G

admin — Tue, 13 Mar 2007 09:34:43 +0000

2G

Second generation of mobile wireless, which utilizes various digital protocols, including GSM, CDMA, TDMA, iDEN, and PDC. (Cingular)

2G (or 2-G) is short for second-generation wireless telephone technology.

The main differentiator to previous mobile telephone systems, retroactively dubbed 1G, is that the radio signals that 1G networks use are analog, while 2G networks are digital. Note that both systems use digital signaling to connect the radio towers (which listen to the handsets) to the rest of the telephone system.

Flavors of 2G

2G technologies can be divided into TDMA-based and CDMA-based standards depending on the type of multiplexing used. The main 2G standards are:

* GSM (TDMA-based), originally from Europe but used worldwide
* IDEN (TDMA-based), proprietary network used by Nextel in the United States and Telus Mobility in Canada
* IS-136 aka D-AMPS, (TDMA-based, commonly referred as simply TDMA in the US), used in the Americas
* IS-95 aka cdmaOne, (CDMA-based, commonly referred as simply CDMA in the US), used in the Americas and parts of Asia
* PDC (TDMA-based), used exclusively in Japan » read more »