IDEN

Integrated Digital Enhanced NetworkWiDENChirp (phone)iDEN TechnologyList of iDEN networksNextel radiosWiDEN Technology
Integrated Digital Enhanced Network (iDEN) is a mobile telecommunications technology, developed by Motorola, which provides its users the benefits of a trunked radio and a cellular telephone.wikipedia
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Time-division multiple access

TDMAtime division multiple accessDynamic TDMA
iDEN places more users in a given spectral space, compared to analog cellular and two-way radio systems, by using speech compression and time division multiple access (TDMA).
TDMA is used in the digital 2G cellular systems such as Global System for Mobile Communications (GSM), IS-136, Personal Digital Cellular (PDC) and iDEN, and in the Digital Enhanced Cordless Telecommunications (DECT) standard for portable phones.

Motorola i870

i870i875
The commercial launch of WiDEN came with the release of the Motorola i870 on 31 October 2005, however, most people never got to experience the WiDEN capability in their handsets.
The Motorola i870 is a clam-style cellular telephone designed for use with iDEN Networks.

Trunked radio system

trunkedtrunked radioTrunked Radio Systems
Integrated Digital Enhanced Network (iDEN) is a mobile telecommunications technology, developed by Motorola, which provides its users the benefits of a trunked radio and a cellular telephone.

Sprint Corporation

SprintSprint NextelSprint Nextel Corporation
However, beginning with the December 2004 announcement of the Sprint Nextel merger, Nextel's iDEN network was abandoned in favor of Sprint's CDMA network.
Sprint Nextel operated an iDEN nationwide network in the 800 and 900 MHz SMR frequency band.

Hot Mobile

MirsMirs CommunicationsMirs Communications Ltd.
The company also operates a separate legacy network utilizing Integrated Digital Enhanced Network (iDEN) technology (in the 800Mhz SMR band) with PTT service that appeals mainly to businesses and large organizations.

Telus Mobility

TelusTelus (CA)
On January 29, 2016, Telus shut down its Mike iDEN network.

List of Motorola products

Motorola iDEN phone modelsMotorolaA855
See also: Integrated Digital Enhanced Network (iDEN)

Southern Linc

SouthernLINCSouthernLINC Wireless
Southern Linc started as Motorola iDEN network with a broad dealer base.

Motorola

Motorola, Inc.Motorola Inc.Motorola Semiconductor
Integrated Digital Enhanced Network (iDEN) is a mobile telecommunications technology, developed by Motorola, which provides its users the benefits of a trunked radio and a cellular telephone. Wideband Integrated Digital Enhanced Network, or WiDEN, is a software upgrade developed by Motorola for its iDEN enhanced specialized mobile radio (or ESMR) wireless telephony protocol.

Mobile phone

cell phonemobile phonesmobile
Integrated Digital Enhanced Network (iDEN) is a mobile telecommunications technology, developed by Motorola, which provides its users the benefits of a trunked radio and a cellular telephone.

Mobile social network

mobileMobile SNSonline mobile communities
It was called the first mobile social network by many technology industry analysts.

GSM

Global System for Mobile CommunicationsGSM networkGSM (850/900/1800/1900)
The project was a software lab experiment focused on the utilization of discontiguous spectrum for GSM wireless.

Radio frequency

RFradio frequenciesradio-frequency
GSM systems typically require 24 contiguous voice channels, but the original MIRS software platform dynamically selected fragmented channels in the radio frequency (RF) spectrum in such a way that a GSM telecom switch could commence a phone call the same as it would in the contiguous channel scenario.

Guard band

GBguardband
iDEN operates on 25 kHz channels, but only occupies 20 kHz in order to provide interference protection via guard bands.

Digital AMPS

TDMAD-AMPSIS-136
By comparison, TDMA Cellular (Digital AMPS) is licensed in blocks of 30 kHz channels, but each emission occupies 40 kHz, and is capable of serving the same number of subscribers per channel as iDEN.

Duplex (telecommunications)

half-duplexfull-duplexduplex
iDEN uses frequency-division duplexing to transmit and receive signals separately, with transmit and receive bands separated by 39 MHz, 45 MHz, or 48 MHz depending on the frequency band being used. This eliminates the need for a duplexer at the mobile end, since time-division duplexing of RF section usage can be performed.

Duplexer

duplexTR switchTR/ATR cells
This eliminates the need for a duplexer at the mobile end, since time-division duplexing of RF section usage can be performed.

SIM card

SIMSubscriber Identity ModuleSIM cards
Most modern iDEN handsets use SIM cards, similar to, but incompatible with GSM handsets' SIM cards.

Global Positioning System

GPSglobal positioning systemsGlobal Positioning System (GPS)
To obtain and maintain this information each base site uses GPS satellites to receive a precise timing reference.

Upgrade

upgradingsoftware upgradeupgradable
Wideband Integrated Digital Enhanced Network, or WiDEN, is a software upgrade developed by Motorola for its iDEN enhanced specialized mobile radio (or ESMR) wireless telephony protocol.

2G

2.5G2.75G2.5
The protocol is generally considered a 2.5G wireless cellular technology.

Code-division multiple access

CDMAcode division multiple accessCDMA-450
However, beginning with the December 2004 announcement of the Sprint Nextel merger, Nextel's iDEN network was abandoned in favor of Sprint's CDMA network.

LTE (telecommunication)

LTE4G LTETD-LTE
The original Nextel iDEN network was finally decommissioned by Sprint on June 30, 2013 and the spectrum refarmed for use in the Sprint LTE network.

PC Card

CardBusPCMCIAPCMCIA card
The first WiDEN-compatible device to be released was the Motorola iM240 PC card which allows raw data speeds up to 60 kbit/s.