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Verizon is an American wireless network operator that previously operated as a separate division of Verizon Communications under the name Verizon Wireless. In a 2019 reorganization, Verizon moved the wireless products and services into the divisions Verizon Consumer and Verizon Business , and stopped using the Verizon Wireless name.
Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.
Exclusive use for M2M, emergency communication and Smart Metering. Alliander Netherlands: CDMA2000 1xRTT, EV-DO Rev. A 450 May 2016: 3 MHz [5] [6] Private network for critical infrastructure. Exclusive use for M2M communication and Smart Metering. 450connect Germany: CDMA2000 1xRTT, EV-DO Rev. A 450 Nov 2016: 2x 1,25 MHz [7] [8] [9] [10]
The top five wireless providers operate nationwide wireless networks which cover most of the population in the United States, while smaller carriers provide native network coverage across selected regions of the United States while supplementing nationwide coverage through roaming agreements with other carriers.
Cellcom is a Verizon LTE in Rural America (LRA) partner. Through this partnership, customers of both carriers will benefit from the high-speed, fourth-generation long-term evolution (LTE) services. [9] Cellcom has access to Verizon Wireless's extensive 700 MHz and AWS 1 spectrum holdings for use on their network. [10]
Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel.
When outside the Cricket or Sprint coverage areas, customers roamed on the Verizon Wireless network and had voice and text services only. Following the AT&T acquisition, in 2015, the CDMA network was decommissioned and CDMA devices ceased functioning. Presently, customers are covered by AT&T's national LTE/NR network.
In 3G, the most prevalent technology was UMTS with CDMA-2000 in close contention. All radio access technologies have to solve the same problems: to divide the finite RF spectrum among multiple users as efficiently as possible. GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA. WiMAX and LTE use OFDM.