Unlicensed Mobile Access (UMA) Explained
Jan 26, · Unlicensed Mobile Access is a wireless technology that allows a seamless transition between wireless wide-area networks (e.g. GSM, 3G, EDGE, GPRS, etc.) and wireless local area networks (e.g. Wi-Fi, Bluetooth). The architecture also includes security components like AAA and security gateways. The UNC typically sits inside the “unlicensed” network zone and sits between the Unlicensed Mobile Access .
NR-U supports three deployment modes:. This enables private 5G deployments supporting new consumer and Industry 4. While the carrier aggregation and dual connectivity modes are designed to operate in the 5Ghz spectrum, the NR-U standalone whay has been built for all sub-7 GHz mid-band ranges plus high-band frequencies in the 57 to 71 GHz ranges that are opening up around the globe.
Support for these mmWave bands is being defined within 3GPP ie 17 specifications. The frequency ranges in which What is unlicensed mobile access is deployed - in any mode of operation - dictates how it is implemented. While NR-U employs the 5G NR physical PHY layer mobie therefore enjoys the benefits of evolutions such as multi-numerology and mini-slots, the medium access control MAC layer protocols for processes such as channel access have been modified to align with Wi-Fi.
Opportunities for better spectral efficiencies and the implementation of URLLC arise when new, less populated, frequency ranges become available to NR-U. The FCC report and order how to find an address in uk the unlicensed use of the 6 GHz band allowed for universal access for low power 30dBm indoor applications.
This is to prevent interference with existing earth-to-space satellite and point-to-point microwave links also operating on these wavelengths. While The abundance of available spectrum together with the absence of any incumbency, coupled with the natural unlkcensed of signals owing to their low propagation rates though air and physical structures, mean interference will be negligible.
Outdoors, the addition of an access controller AFC ensures that there will be no interference from alternative radio access technologies. Instead, channel availability can be determined by simple energy detection, thereby permitting rapid access to transmission channels in support of low latency automation and IoT applications. Future iterations of the standard will include preamble detection, should a common signal be agreed upon across all relevant radio access technologies.
Skip to Content. A Microsoft Company. Topics Mobile5G. Control plane unnlicensed is what is unlicensed mobile access over licensed spectrum only. Dual Connectivitywhich supports both upstream and downstream user plane traffic over the unlicensed spectrum.
Again, ia is designed for traffic offload and not coverage so control plane traffic is transported only over the licensed mobike. Standalonewhich represents the first time the 3GPP has defined a mode of operation that relies solely on mpbile spectrum for control and user plane traffic. Contact us to learn more about our 5G Core solutions.
Learn More About Unlicensed Mobile Access (UMA) in These Related Titles
Definition of Unlicensed Mobile Access (UMA): While CTP is limited to the Bluetooth air interface technology, UMA is an ‘air interface agnostic’ specification, which can be used in conjunction with Bluetooth, Wi-Fi, or even as yet undefined access technologies. What does unlicensed-mobile-access mean? The original term for the Generic Access Network (GAN) standards. See GAN. UMA is a technology to provide access to GSM and GPRS mobile services over unlicensed spectrum technologies, including Bluetooth and By deploying UMA technology 1,2, service providers can enable subscribers to roam and handover between GSM/EDGE radio network and public/private unlicensed wireless networks using dual-mode mobile handsets.
Bluetooth and IEEE Roaming vs. Additional features mobility, security that involve cooperation between network operators or service providers are usually supported, due to roaming agreements between these operators or service providers. Portability means that it is possible to use a terminal anywhere in a certain network e. However, when moving to another network, mobility or security features are not automatically maintained.
Terminal vs. Personal mobility means that a person can be reached via any one of several terminals that can be located at different places using a single address e. SIP address. This concept has not been widely used yet. What is UNC??? A mobile subscriber with a UMA-enabled, dual-mode handset moves within range of an unlicensed wireless network to which the handset is allowed to connect.
When a UMA-enabled subscriber moves outside the range of an unlicensed wireless network to which they are connected, the UNC and handset facilitate roaming back to the licensed outdoor network. This roaming process is completely transparent to the subscriber.
Subject to mode selection, UMA shall support seamless handover in and handover out ,provided the following conditions are true: The mobile station stays within the limits of service pedestrian state of motion The mobile station remains during the time of handover within the coverage of both the networks.
UMA could be used to provide better in-building coverage for customers who don't get a good cellular signal in some areas, including basements.
It enables service providers to deliver voice at a lower cost when handsets are within range of an unlicensed wireless network. If a customer doesn't have a wireless network already in the house, a wireless access point would be needed in addition to a broadband link.
The most expensive and technologically challenging component of UMA solution is the Wi-Fi and cellular handset, because of battery-life limitations, cost, and size. UMA cannot guarantee the quality of a voice call or the throughput of a data connection and traffic prioritization with QoS can significantly improve performance. UMA-capable terminals 2. UMA network controller 3. Open navigation menu. Close suggestions Search Search. User Settings.
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Carousel Previous Carousel Next. Jump to Page. Search inside document. Roaming When a UMA-enabled subscriber moves outside the range of an unlicensed wireless network to which they are connected, the UNC and handset facilitate roaming back to the licensed outdoor network.
Handoff Specifications Subject to mode selection, UMA shall support seamless handover in and handover out ,provided the following conditions are true: The mobile station stays within the limits of service pedestrian state of motion The mobile station remains during the time of handover within the coverage of both the networks. Lyubomir Boychuk. Andra Keay. Hony Yik. Shirley Ang. Siva Reddy Vundela. Cristiano Silva. Hilmi Hamdan. Pankaj Sable. Obi A Agusiobo. Yuki Mitsuki.
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