| UMA Feature |
Operator Advantage |
| Scalable, secure access to mobile services over IP access networks |
With UMA, mobile operators can allow millions of subscribers to securely access the core service network over an IP access network, including the Internet. |
| Full-service transparency |
With UMA, subscribers have seamless access to all circuit, packet and IMS-based services. All services available over GSM/UMTS networks are available over IP access networks via UMA. |
| Seamless mobility between networks |
For dual-mode handsets, UMA enables seamless mobility between cellular and IP access networks, providing true voice call and data session continuity. |
| Leverages existing/future core network investment |
The UMA Network Controller (UNC) interfaces with existing mobile core networks through well defined, standard interfaces, minimizing network disruption. |
| Supports all broadband access technologies |
UMA is designed to operate over any broadband IP access connection (e.g. DSL, cable, T1/E1,...) and not require a mobile operator to have a relationship with a broadband access provider. |
| Supports all IP wireless technologies |
UMA is an IP layer solution and does not impact the physical radio access layer. UMA runs transparently over Wi-Fi, Bluetooth or even next generation wireless IP technologies such as WiMax. |
| Supports all WLAN environments |
With UMA, operators can provide dual-mode handset services in any WLAN environment: home, office, hotspot, coffee shop, campus and airport. |
| Evolution to LTE |
The service drivers for UMA remain the same in an LTE network:
- The need to create a 'service zone' in the home or office to provide differentiated services, pricing.
- The need to offload bandwidth intensive services from the macro RAN to fixed-line network in the home or office.
- The need to improve service performance and coverage when indoors
As LTE standards come together, it's clear UMA will continue to play a valuable role in RAN evolution.
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