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4g 5g wiki

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However, I can provide you with a technical comparison between 4G and 5G based on commonly available knowledge up to that point.

4G (LTE) Technical Details:

  1. Air Interface Technology:
    • 4G LTE (Long-Term Evolution) uses Orthogonal Frequency Division Multiple Access (OFDMA) for the downlink and Single Carrier Frequency Division Multiple Access (SC-FDMA) for the uplink.
  2. Data Rates:
    • Peak data rates in 4G LTE can reach up to 1 Gbps (Gigabit per second) in ideal conditions.
  3. Latency:
    • 4G networks typically have latency in the range of 20 to 30 milliseconds.
  4. Network Architecture:
    • 4G follows a centralized network architecture with a hierarchical structure. Core network functions are more centralized.
  5. Services:
    • 4G primarily focuses on enhanced Mobile Broadband (eMBB) and Voice over LTE (VoLTE) services.

5G Technical Details:

  1. Air Interface Technology:
    • 5G NR (New Radio) uses advanced technologies like OFDMA for downlink and SC-FDMA for uplink, similar to 4G, but with additional improvements.
  2. Data Rates:
    • 5G offers significantly higher peak data rates, potentially exceeding 10 Gbps.
  3. Latency:
    • 5G aims for ultra-low latency, targeting values as low as 1 millisecond or even lower.
  4. Network Architecture:
    • 5G introduces a more distributed and flexible architecture with network functions distributed at the network edge (Edge Computing).
  5. Services:
    • 5G supports a broader range of services beyond eMBB, including Massive Machine Type Communication (mMTC) and Ultra-Reliable Low Latency Communication (URLLC).

Common Aspects and Interworking:

  1. Dual Connectivity:
    • Both 4G and 5G networks support dual connectivity, allowing a user device to be simultaneously connected to both networks.
  2. Carrier Aggregation:
    • Carrier aggregation, a technique that combines multiple frequency bands for increased data rates, is supported in both 4G and 5G.
  3. Inter-RAT Handovers:
    • Inter-RAT (Radio Access Technology) handovers enable seamless transition between 4G and 5G networks as a user moves across coverage areas.
  4. Backward Compatibility:
    • Both 4G and 5G networks are designed to be backward compatible, ensuring a smooth transition and continued connectivity.
  5. Common Core Network:
    • A common core network can be employed to support both 4G and 5G services, facilitating integration and efficient management.
  6. Dynamic Spectrum Sharing (DSS):
    • Dynamic Spectrum Sharing allows the simultaneous operation of LTE and 5G NR within the same frequency band, optimizing spectrum utilization.