1.4 - Cellular Standards Flashcards
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Cellular Networks
Cellular networks divide areas into cells with antennas at the edges to maintain connectivity as users travel.
2G Networks
Early cellular networks that included GSM (Global System for Mobile Communications) and CDMA (Code Division Multiple Access). Limited data support.
GSM (Global System for Mobile Communications)
Used in about 90% of the global market. Supports voice and data communication with SIM card for configuration.
CDMA (Code Division Multiple Access)
Allows multiple users to communicate simultaneously using unique codes. Common in Verizon and Sprint networks in the US.
3G Technology
Introduced in 1998, offering faster data speeds and additional capabilities like GPS, mobile TV, and streaming. Provides several megabits per second.
LTE (Long Term Evolution)
4G technology that converged GSM and CDMA networks. Provides up to 150 Mbps, with LTE Advanced offering up to 300 Mbps.
5G Technology
Fifth generation cellular networking offering speeds up to 10 Gbps. Enhances data speeds and expands capabilities for IoT devices.
PRL Update (Preferred Roaming List)
Updates the list of appropriate network towers for roaming. Can be updated over-the-air (OTA).
Wi-Fi Hotspot
Feature that turns a phone into a personal data router using the cellular network. Allows other devices to connect via 802.11 (Wi-Fi).
Wi-Fi Hotspot Limitations
Cellular providers may limit or charge extra for Wi-Fi hotspot capabilities. Data costs may apply.