ITPEC IP October 2019 Question 34
Which of the following is an appropriate description of LTE in wireless communications?
Explanation
A mobile phone standard for data communication faster than 3G — that is LTE (Long Term Evolution).
LTE was standardised by 3GPP as the step after 3G. It carries everything as packets over IP and uses techniques such as OFDMA and MIMO (several antennas at once) to raise the data rate for smartphones and data terminals; its advanced version, LTE-Advanced, counts as 4G. 5G is the next generation after it.
Answer (c)
Why not others:
- •(a) — describes ad hoc mode of a wireless LAN, where devices talk directly without an access point
- •(b) — describes a PAN (personal area network), such as Bluetooth linking a PC and its peripherals within a few metres
- •(d) — describes a femtocell, a small base station placed indoors where the carrier's radio waves reach poorly
Key rule: Mobile generations run 3G → LTE/4G → 5G, each faster; wireless LAN (Wi-Fi) and Bluetooth are short-range networks, not mobile phone standards.
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