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4G[ 1 ] is the fourth generation of broadband cellular network technology, succeeding 3G and preceding 5G. A 4G system must provide capabilities defined by ITU in IMT Advanced. Potential and current applications include amended mobile web access, IP telephony, gaming services, high-definition mobile TV, video conferencing, and 3D television.
Clearwire Corporation (stylized as clearw˙re) was a telecommunications operator which provided mobile and fixed wireless broadband communications services to retail and wholesale customers in the United States, Belgium, Ireland and Spain. Clearwire traces its roots to 1998, when Sierra Technologies, Inc., spun off certain assets to form a new ...
This included video streams and a drive test system using TD-LTE. [56] As of 12/10/2010, DirecTV has teamed up with Verizon Wireless for a test of high-speed LTE wireless technology in a few homes in Pennsylvania, designed to deliver an integrated Internet and TV bundle. Verizon Wireless said it launched LTE wireless services (for data, no ...
The following is a list of countries by 4G LTE coverage as measured by Juniper Networks in 2013 and published by Bloomberg. [9][10] Rank. Country/Territory. Penetration. 1. South Korea. 86.0%. 2. Japan.
Drive testing. RF Drive testing is a method of measuring and assessing the coverage, capacity and Quality of Service (QoS) of a mobile radio network. The technique consists of using a motor vehicle containing mobile radio network air interface measurement equipment that can detect and record a wide variety of the physical and virtual parameters ...
LTE Advanced (LTE+, LTE-A; [1] on Samsung Galaxy and Xiaomi phones — 4G+) is a mobile communication standard and a major enhancement of the Long Term Evolution (LTE) standard. It was formally submitted as a candidate 4G to ITU-T in late 2009 as meeting the requirements of the IMT-Advanced standard, and was standardized by the 3rd Generation ...
GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA. WiMAX and LTE use OFDM. Time-division multiple access (TDMA) provides multiuser access by chopping up the channel into sequential time slices. Each user of the channel takes turns to transmit and receive signals.
Speedtest.net. Speedtest.net, also known as Speedtest by Ookla, is a web service that provides free analysis of Internet access performance metrics, such as connection data rate and latency. It is the flagship product of Ookla, a web testing and network diagnostics company founded in 2006, and based in Seattle, Washington, United States. [5][6]