公开(公告)号：US20240406765A1

公开(公告)日：2024-12-05

申请号：US18325802

申请日：2023-05-30

Applicant: Microsoft Technology Licensing, LLC

Inventor： Anuj KALIA ,  Junzhi GONG

IPC: H04W24/04 ,  H04W76/10

Abstract: The present disclosure relates to systems, methods, and computer-readable media for increasing resiliency in distributed units of a virtual radio access network (vRAN) of a telecommunications network (e.g., a 5G telecommunications network). Systems described herein involve establishing, using a middlebox entity, stream control transmission protocol (SCTP) connections between each of multiple distributed units and a centralized unit. The middlebox entity may monitor failure conditions to detect a failure condition of a primary distributed unit and, based on the detected failure condition, quickly re-establish a connection between a backup distributed unit having the SCTP connection previously established with the centralized unit. The features described herein provide additional resiliency by enabling a centralized unit to be timely notified of a distributed unit failure as well as establish communication between the centralized unit and a backup distributed unit without interrupting services or sessions on the telecommunications network.

公开(公告)号：US20250063448A1

公开(公告)日：2025-02-20

申请号：US18450962

申请日：2023-08-16

Applicant: Microsoft Technology Licensing, LLC

Inventor： Anuj KALIA ,  Junzhi GONG

IPC: H04W36/00 ,  H04W36/08 ,  H04W36/22

Abstract: The present disclosure relates to systems, methods, and computer-readable media for increasing resiliency in distributed units of a virtual radio access network (vRAN) of a telecommunications network (e.g., a 5G telecommunications network), particularly when performing a planned handover operation between the distributed units. The examples described herein specifically relate to implementing an inter-distributed unit handover between distributed units that are serviced by the same radio unit. In some examples, this handover is initiated by a middlebox entity that is positioned between the distributed units and a centralized unit. In some instances, features of the middlebox entity are implemented within the framework of a centralized unit. By allowing a quick handover as described herein, the distributed units can provide uninterrupted service to a UE while allowing the distributed units to perform various upgrades or modifications to the distributed unit without service interruptions.