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VANC Voice over Long Term Evolution via Generic Access Network Controller

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Voice over Long Term Evolution (VoLTE) and Generic Access Network (GAN) are two distinct and established technologies in the domain of mobile communication, and I can provide an explanation for each:

VoLTE (Voice over Long Term Evolution):

VoLTE is a technology that enables voice calls to be transmitted over the Long Term Evolution (LTE) network, which is the high-speed data network used for 4G and later generations of cellular communication. Traditionally, voice calls in 2G and 3G networks were carried over circuit-switched networks (circuit-switched fallback - CSFB), while data was transmitted over packet-switched networks (like LTE).

With VoLTE, both voice and data are carried over the packet-switched LTE network, resulting in several benefits:

  • Better Voice Quality: VoLTE provides high-definition (HD) voice quality, offering clearer and more natural-sounding voice calls compared to traditional circuit-switched voice calls.
  • Faster Call Setup: VoLTE has faster call setup times, as it eliminates the need for the network to switch between circuit-switched and packet-switched modes.
  • Seamless Voice and Data Simultaneous Usage: VoLTE allows users to use data services (browsing, streaming, etc.) while on a voice call without any interruption.
  • Increased Network Efficiency: VoLTE optimizes the use of network resources, leading to better spectrum efficiency and improved overall network performance.

Generic Access Network (GAN):

GAN is a technology that enables seamless voice and data services handover between cellular networks (like GSM or UMTS) and unlicensed wireless networks, such as Wi-Fi. The GAN architecture provides a standardized way for mobile devices to access both cellular and Wi-Fi networks and switch between them transparently.

The main benefits of GAN include:

  • Extended Coverage: GAN allows users to access voice and data services in areas where cellular coverage might be weak but Wi-Fi coverage is available.
  • Offloading Data Traffic: By offloading data traffic to Wi-Fi networks when available, GAN helps reduce the burden on the cellular network, improving overall data speeds and network performance.
  • Seamless Handovers: GAN enables seamless handover of voice calls and data sessions between Wi-Fi and cellular networks without interrupting ongoing services.