China Mobile submits standards proposal for cloud-based broadband gateway

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Huawei and the China Mobile Research Institute submitted a standards proposal to the Internet Engineering Task Force (IETF) for the first cloud-based Broadband Network Gateway (BNG).

China Mobile and Huawei delivered the proposed Control Plane and User Plane Separated Protocol (CUSP) requirements for cloud-based BNG interfaces at the 100th meeting of the IETF. The proposals mark an important step toward standardization of CU-separated BNG architecture.

Huawei said the standardization of interfaces between the control and user planes must be achieved before large-scale commercial deployment of cloud-based BNG architecture can be achieved. The CUSP draft defines protocol requirements for information delivery and security mechanisms for communication between the control and user planes in cloud-based BNG architecture with separated control and user planes.

Huawei and China Mobile presented the CUSP draft and information model for interaction between the control and user planes. Huawei and China Mobile will continue to promote the standardization of these proposals in the IETF Routing Area Working Group (RTGWG).

China Mobile and other telecom operators proposed innovative CU-separated BNG architecture to address the challenges such as low resource utilization, complex management and maintenance, and slow service provisioning faced by legacy fixed broadband services.

“CU-separated BNG architecture allows network resource pooling to improve resource utilization and enables centralized virtual control plane to accelerate service efficiency and shorten new service provisioning time,” said Hu Shujun, an expert at the China Mobile Research Institute.

Huawei has speeded up development of the cloud-based BNG solution design based on the CU-separated BNG architecture.

In March 2017, Huawei worked with the European Advanced Networking Test Center (EANTC) to complete the industry’s first function and performance tests on broadband access for one million home subscribers.

In June, Huawei and China Mobile Shaanxi carried out the world’s first commercial trial of the CU-separated BNG architecture on a live network.