1.4 (2G/3G/4G/5G) Flashcards
What were 2G network standards?
GSM
CDMA
Fine for calls, but bad for data sending.
What is GSM?
The Global System for Mobile Communications is a standard developed by the European Telecommunications Standards Institute to describe the protocols for second-generation digital cellular networks used by mobile devices such as mobile phones and tablets.
It has worldwide coverage.
What is CDMA?
Code-division multiple access 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. This allows several users to share a band of frequencies.
Everyone communicates at the same time, each dall uses a different code.
What is 3G technology?
Introduced in 1998.
Upgraded from 2G.
Incremental 3G updates for speed, usually several megabits per second.
What is 3G technology?
Introduced in 1998.
Upgraded from 2G.
Incremental 3G updates for speed, usually several megabits per second.
Allowed new functionality of GPS, mobile TV and video on demand.
So what’s the difference between 4G and LTE, and is 4G or LTE better?
In short, 4G offers a much faster speed, more stability and access to a larger variety of online activities. LTE is a half-point between 3G and 4G, so its performance suffers compared to the fourth generation.
What was LTE?
Long-term evolution designed to converge the GSM and CDMA standards. It improves on those standards’ capacity and speed by using a different radio interface and core network improvements.
Based on EDGE: enhanced data rates for GSM evolution.
Speeds up to 150 Mbits.
What is LTE Advanced LTE-A?
Up to 300 Mbits.
When did 5G launch?
2020
What is 5G?
Huge improvements in speed.
At the highest frequencies.
Up to 10 gigs per second.
What are the impacts of IoT with 5G?
Designed to be less of bandwidth issues for devices.
Larger data transfers.
Faster.
What is the difference between GSM and CDMA?
GSM offers more expansive international roaming capabilities than the CDMA, which offers only nationwide roaming.
GSM can provide international roaming since its service is available in more than 200 countries, allowing its customers to access network services worldwide.
GSM offers more expansive international roaming capabilities than the CDMA, which offers only nationwide roaming. GSM can provide international roaming since its service is available in more than 200 countries, allowing its customers to access network services worldwide.
GSM supports transmitting data and voice both at once, but CDMA does have not this feature.
