madhuvarsha
2010-12-20, 01:15 AM
Voice over LTE via Generic Access (VoLGA) PDF (http://m2vtelecom.blogspot.com/2010/12/voice-over-lte-via-generic-access-volga.html)
The roots of 'Voice over LTE (http://en.wikipedia.org/wiki/3GPP_Long_Term_Evolution) via GAN' (VoLGA (http://www.volga-forum.com/)) are the 3GPP Generic Access Network (http://en.wikipedia.org/wiki/Generic_Access_Network)
(GAN) specifications which add Wi-Fi as an access technology to 3GPP based networks such
as GSM (http://en.wikipedia.org/wiki/GSM) and UMTS (http://en.wikipedia.org/wiki/Universal_Mobile_Telecommunications_System). GAN requires dual mode mobile (http://en.wikipedia.org/wiki/Dual_mode_mobile) devices which have both a
GSM/UMTS radio interface and a Wi-Fi radio interface. Such mobile devices are available today from a number of manufacturers including Samsung, Nokia, Sagem, LG (http://www.lg.com/), HTC3,********4, Sony-E******* (http://www.sonye*******.com/) and RIM (Blackberry)5. When these dual-mode devices detect the availability of a suitable Wi-Fi network (http://en.wikipedia.org/wiki/Wi-Fi), e.g. at home or a public hotspot, they connect to the Wi-Fi access point and register with the GSM/UMTS core network over the Wi-Fi link and the Internet. A GAN gateway securely connects a subscriber to the infrastructure of a network operator and voice calls and other circuit switched services such as SMS are then securely transported between the mobile device and the Gateway over the intermediate Wi-Fi link and
Internet access network.
VoLGA re-uses this principle by replacing the Wi-Fi access with LTE.
The roots of 'Voice over LTE (http://en.wikipedia.org/wiki/3GPP_Long_Term_Evolution) via GAN' (VoLGA (http://www.volga-forum.com/)) are the 3GPP Generic Access Network (http://en.wikipedia.org/wiki/Generic_Access_Network)
(GAN) specifications which add Wi-Fi as an access technology to 3GPP based networks such
as GSM (http://en.wikipedia.org/wiki/GSM) and UMTS (http://en.wikipedia.org/wiki/Universal_Mobile_Telecommunications_System). GAN requires dual mode mobile (http://en.wikipedia.org/wiki/Dual_mode_mobile) devices which have both a
GSM/UMTS radio interface and a Wi-Fi radio interface. Such mobile devices are available today from a number of manufacturers including Samsung, Nokia, Sagem, LG (http://www.lg.com/), HTC3,********4, Sony-E******* (http://www.sonye*******.com/) and RIM (Blackberry)5. When these dual-mode devices detect the availability of a suitable Wi-Fi network (http://en.wikipedia.org/wiki/Wi-Fi), e.g. at home or a public hotspot, they connect to the Wi-Fi access point and register with the GSM/UMTS core network over the Wi-Fi link and the Internet. A GAN gateway securely connects a subscriber to the infrastructure of a network operator and voice calls and other circuit switched services such as SMS are then securely transported between the mobile device and the Gateway over the intermediate Wi-Fi link and
Internet access network.
VoLGA re-uses this principle by replacing the Wi-Fi access with LTE.