Challenges in 5G Networks and HetNets
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Questions and Answers

What is one of the advantages of Space Division Multiple Access (SDMA) mentioned in the text?

  • Requires dynamic control of power from user to Base Station
  • Increases latency in communication
  • Minimize the interference between users (correct)
  • Decreases base station capacity

    • What is a disadvantage of the Reverse Link in SDMA?

  • High latency
  • Difficulty from user to Base Station (correct)
  • Low data rates
  • Interference between users

    • What is the primary purpose of Reconfigurable Intelligent Surfaces (RIS) in future mobile technologies?

  • Enhancing signal coverage and strength in indoor environments (correct)
  • Increasing the data download speed for individual users
  • Reducing the number of connected devices in a single cell
  • Improving battery life of mobile devices

    • What aspect of 5G wireless communications is expected to significantly improve compared to current 4G LTE networks?

    <p>Quality of Service (QoS) (B)</p> Signup and view all the answers

    How does Massive MIMO System contribute to future mobile technologies?

    <p>By reducing the need for base station density (D)</p> Signup and view all the answers

    What is a key advantage of Heterogeneous Networks in the context of mobile communication?

    <p>Seamless handover between different cell types (D)</p> Signup and view all the answers

    In the context of future mobile technologies, what paradigm shift is mentioned with regard to cellular networks?

    <p>Shift towards device-centric network architecture (D)</p> Signup and view all the answers

    How does the increasing smartphone usage impact the existing cellular networks according to the text?

    <p>It causes a significant load on existing cellular networks (B)</p> Signup and view all the answers

    What role is the User expected to take on in future wireless networks based on the text?

    <p>Participating in storage, relaying, and computation within the network (D)</p> Signup and view all the answers

    How are future networks expected to connect nodes according to the text?

    <p>By connecting diverse nodes in different proximity (C)</p> Signup and view all the answers

    In what way does M2M and IoT pose a challenge to present 4G LTE cellular systems as mentioned in the text?

    <p>They demand support for tens of thousands of connected devices in a single cell (C)</p> Signup and view all the answers

    What is one major challenge that dense 5G networks will face?

    <p>High co-channel interference (A)</p> Signup and view all the answers

    In the context of 5G networks, what type of antennas are being increasingly used due to high interference?

    <p>Sectorized and directional antennas (B)</p> Signup and view all the answers

    Which future communication concept is expected to allow devices in proximity to communicate directly without involving the cellular base station?

    <p>Device to Device (D2D) communications (D)</p> Signup and view all the answers

    What does M2M communication in 5G involve?

    <p>Automated data generation and exchange between intelligent machines (A)</p> Signup and view all the answers

    Which type of communication connects a massive number of devices, such as smart metering and sensors, in wide coverage areas?

    <p>Machine to Machine (M2M) communications (A)</p> Signup and view all the answers

    Which term is used to refer to the deployment of small, micro, pico, and femto cells in HetNets for 5G networks?

    <p>Heterogeneous Networks (HetNets) (D)</p> Signup and view all the answers

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