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DOCSIS employs a mixture of deterministic access methods for upstream transmissions, specifically time-division multiple access (TDMA) for DOCSIS 1.0/1.1 and both TDMA and S-CDMA for DOCSIS 2.0 and 3.0, with a limited use of contention for bandwidth reservation requests. In TDMA, a cable modem requests a time to transmit and the CMTS grants it ...
OneWeb alone raised $1.7 billion by February 2017 for the project, [7] and SpaceX raised over one billion in the first half of 2019 for their service called Starlink. [8] They expected more than $30 billion in revenue by 2025 from its satellite constellation. [9] [10] Starlink, as of February 2024, has 5,402 operational satellites in orbit. [11]
Starlink is a satellite internet constellation operated by Starlink Services, LLC, an international telecommunications provider that is a wholly owned subsidiary of American aerospace company SpaceX, [5] providing coverage to over 100 countries and territories.
One NZ also offers DOCSIS cable modem broadband within the former TelstraClear's network. [57] In June 2016, Vodafone upgraded its cable network to DOCSIS 3.1, in order to support gigabit speeds. [58] One NZ currently offers a single option on the cable network. The standard plan provides up to 912 Mbit/s download and 104 Mbit/s upload. [59]
American wireless carrier Nextel Communications field tested wireless broadband network technologies including Flash-OFDM in 2005. [53] Sprint purchased the carrier in 2006 and decided to deploy the mobile version of WiMAX , which is based on Scalable Orthogonal Frequency-Division Multiple Access (SOFDMA) technology.
In most residential broadband technologies, such as cable Internet, DSL, satellite internet, or wireless broadband, a population of users share the available bandwidth. Some technologies share only their core network, while some including cable internet and passive optical network (PON) also share the access network.
For wider area communications, wireless local area network (WLAN) is used. WLANs are often known by their commercial product name Wi-Fi. These systems are used to provide wireless access to other systems on the local network such as other computers, shared printers, and other such devices or even the internet.
A satellite internet constellation is a constellation of artificial satellites providing satellite internet service.In particular, the term has come to refer to a new generation of very large constellations (sometimes referred to as megaconstellations [1]) orbiting in low Earth orbit (LEO) to provide low-latency, high bandwidth internet service. [2]
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