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Abbrev. for local thermodynamic equilibrium. See thermodynamic equilibrium.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006


(Long Term Evolution) The current dominant cellular transmission technology. Superseding 3G, LTE is a 4G technology that uses the GSM software infrastructure but different hardware interfaces. LTE/4G will coexist with 5G for some time.

Download speeds in the U.S. run the gamut from roughly 5 to 85 Mbps. Standardized in 2008, the first LTE smartphones appeared in 2011. See cellular generations, GSM, 3G and 5G.

LTE provides global interoperability in more than three dozen frequency bands worldwide. However, no single phone supports all channels (see RF filter). Speed and other enhancements were made to the original LTE standard (see LTE Advanced).

LTE Is Based on IP Packets
In 3G and all prior cellular networks, voice was handled by the traditional circuit-switched network, and only data used the packet switched architecture of the Internet. However, LTE's Evolved Packet System (EPS) transmits both voice and data in IP packets. EPS comprises the OFDMA-based E-UTRAN air interface and Evolved Packet Core (EPC). See circuit switching.

Officially 4G
In 2010, the ITU defined LTE, WiMAX and HSPA+ as 4G technologies. Previously, only LTE Advanced (LTE-A) was considered to be 4G. See LTE Advanced, LTE architecture, IP Multimedia Subsystem and 3GPP.

OTHER LTE TECHNOLOGIESUnlicensed Spectrum  See  LTE-U.

  Internet of Things   See  LTE-for IoT.

  Higher Speed         See  LTE Advanced.

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References in periodicals archive ?
'Our LTE-A deployment proves that we have a network that's capable of providing unprecedented data speeds and world-class internet quality, and has enough capacity to efficiently meet the rapidly rising mobile data traffic,' Mario G.
LTE-A is the fastest, commercially available wireless technology for mobile data in the country today.
GCT's GDM7243Q, the only LTE-A chip commercially available that offers 4x4 MIMO capability, enables LTE devices with higher data rates and throughput while using limited bandwidth (double speed with the same limited bandwidth), which is a scarce commodity for network operators.
A key advantage of LTE-A is much faster speeds to the end user through the implementation of carrier aggregation and higher order multiple antenna techniques.
One instrument that Agilent offers for LTE-A test is the E7515A UXM wireless test set, which, according to Gareth Thomas, platform manager, "provides new insights to help wring out designs with a broad range of integrated capabilities." It supports multiple cells, CA, 4x2 downlink MIMO, and integrated fading.
The Galaxy S4 LTE-A is expected to be available to customers in Korea this summer.
"By deploying LTE-A, we will have a more powerful network platform for offering a richer array of data services and digital life solutions to enterprises, families and individuals," added Ernesto R.
Initially deployed in Boracay, Aklan, one of the country's leading tourist destinations, Smart's LTE-A service there has posted speeds of up to 250 Mbps.
Provider of telecommunications equipment and network solutions ZTE Corporation on Monday announced the debut of its LTE-A Inter-band Dual-Carrier commercial base station.
LTE-A is predicted to become the future mainstream of wireless communications following initial rollouts of LTE services throughout the Middle East.