Here is Question No. 75 a part of our series on UPSC Prelims 2019
Q75. With reference to communication technologies, what is/are the difference/differences between LTE (Long-Term Evolution) and VoLTE (Voice over Long-Term Evolution)?
- LTE is commonly marketed as 3G and VoLTE is commonly marketed as advanced 3G.
- LTE is data-only technology and VoLTE is voice-only technology.
Select the correct answer using the code given below:
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Answer: D
- Statement 1 is not correct: LTE improved on the radio technology of 3G’s WCDMA and introduced OFDM or Orthogonal FrequencyDivision Multiplexing. ITU (The International Telecommunication Union) recognises the lack of clarity in the term 4G and has determined LTE-Advanced and Wireless MAN-Advanced or WiMAX 2 as “True” 4G.
- Statement 2 is not correct: Basically, VoLTE systems covert voice into data stream, which is then transmitted using the data connection. VoLTE is a technology update to the LTE protocol used by mobile phone networks. Under LTE, the infrastructure of telecom players only allows the transmission of data while voice calls are routed to their older 2G or 3G networks.
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