Generic Access Network

Generic Access Network

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The Generic Access Network (GAN) is a technology that enables seamless handover and roaming between cellular networks and Wi-Fi networks. It allows mobile devices to use Wi-Fi networks as an extension of the cellular network, providing enhanced coverage and capacity, as well as potential cost savings for users.

Key Points about Generic Access Network (GAN):

  1. Seamless Handover: GAN enables seamless handover of voice and data sessions between cellular networks and Wi-Fi networks. Users can start a call or data session on a cellular network and continue it uninterrupted when switching to a Wi-Fi network, or vice versa.
  2. Improved Coverage and Capacity: By utilizing Wi-Fi networks, GAN extends the coverage and capacity of cellular networks. Users can access voice and data services in areas with limited cellular coverage or high network congestion, such as indoor environments or crowded public spaces.
  3. Voice over Wi-Fi: GAN supports Voice over Wi-Fi (VoWi-Fi) services, allowing users to make and receive calls over Wi-Fi networks using their existing mobile phone numbers. This can be particularly beneficial in areas with weak cellular signal but strong Wi-Fi coverage, such as homes, offices, and public Wi-Fi hotspots.
  4. Seamless Roaming: GAN enables seamless roaming between different Wi-Fi networks without interrupting ongoing voice or data sessions. Users can move between Wi-Fi access points or networks while maintaining their active connections.
  5. Cost Savings: GAN can offer cost savings for both users and service providers. Users can take advantage of Wi-Fi networks, which are often available for free or at lower costs compared to cellular data plans. Service providers can offload data traffic from cellular networks to Wi-Fi networks, reducing network congestion and operational costs.
  6. Quality of Service: GAN supports Quality of Service (QoS) mechanisms to prioritize voice and real-time applications over data traffic, ensuring a high-quality user experience for voice calls and time-sensitive applications.

GAN has been widely implemented in various mobile networks and devices, allowing users to benefit from the advantages of both cellular and Wi-Fi technologies. It provides a seamless and efficient connectivity solution, enhancing coverage, capacity, and cost-effectiveness in mobile communications.

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