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Press Release -- February 22nd, 2019
Source: Huawei

Huawei and Heavy Reading Release White Paper for 5G Core Network Migration

[Shenzhen, China, February 22, 2019] Huawei and Heavy Reading jointly released a white paper on 5G core network migration before the opening of the 2019 Mobile World Congress (MWC). The paper attaches importance to core network capabilities and key technologies required for a smooth transition to the target 5G core network architecture. In addition to being cloudified and microservice-based, and supporting service orchestration and O&M automation, core networks must adopt key technologies. Key technologies, such as distributed network architecture based on Control and User Plane Separation (CUPS), 4G and 5G converged core networks, and VoLTE-to-VoNR evolution, maximize the value of carrier investments.

CUPS-based distributed network architecture: CUPS technology allows centralized deployment of control planes and distributed deployment of user planes, and supports independent scaling for the user planes. The deployment meets diversified service requirements for low latency and high bandwidth, and paves the way for the 5G network architecture.

4G and 5G converged core network: Convergence of data, control, and user planes simplifies the network structure and operations, ensures service continuity during migration from 4G to 5G networks, and ensures unparalleled user experience without the need to change SIM/USIM cards or numbers.

Evolution from VoLTE to VoNR: 5G networks reuse the 4G voice architecture and no longer support the CSFB solution. VoLTE becomes a must for the voice infrastructure. IMS can be reused in the construction of Voice over New Radio (VoNR) networks, with peripheral interfaces remaining unchanged. The evolution is more smooth.

Since 5G research started in 2009, Huawei has been investing a lot in innovation of 5G core network technology and promotion of 5G core network standards development. Huawei spearheaded the completion of IMT-2020 (5G) phase-3 tests on 5G NSA and SA core network key technologies, service processes, and security in 2018. Huawei will continue to collaborate with worldwide carriers, industry partners, and standards organizations to push ahead 5G development.

For more information on the white paper, click here.

MWC 2019 will be held from February 25 to February 28 in Barcelona, Spain. Huawei will showcase its products and solutions at booth 1H50 in Fira Gran Via Hall 1, booth 3I30 in Hall 3, the Innovation City zone in Hall 4, and booth 7C21 and 7C31 in Hall 7. For more information, please visit

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