QuestionQ16

5G Development and Evolution

Which of the following statements about the evolution of IoT technology is incorrect?

  • A According to 3GPP specifications, NB-IoT can coexist with NR.
  • B According to 3GPP specifications, NB-IoT can work in NR TDD frequency bands.
  • C According to 3GPP specifications, NB-IoT can work in NR SUL frequency bands.
  • D According to 3GPP specifications, NB-IoT can work in NR FDD frequency bands.
Explanation

NR Supplementary Uplink (SUL) bands provide additional uplink-only spectrum paired logically with an existing NR downlink carrier to extend uplink coverage; they do not carry an independent downlink component, and NB-IoT deployment requires both downlink and uplink resources (for synchronization signals, broadcast channel, and paging), so NB-IoT cannot operate within NR SUL frequency bands, unlike NR FDD and TDD bands where it can be deployed in-band, guard-band, or standalone and can coexist with NR.

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