US Patent Application 17825645. DYNAMIC RE-ROUTING AND MODIFICATION OF LAYER TRAFFIC IN VIRTUALIZED RANS simplified abstract

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DYNAMIC RE-ROUTING AND MODIFICATION OF LAYER TRAFFIC IN VIRTUALIZED RANS

Organization Name

Microsoft Technology Licensing, LLC==Inventor(s)==

[[Category:Anuj Kalia of Newcastle WA (US)]]

[[Category:Daehyeok Kim of Redmond WA (US)]]

[[Category:Ilias Marinos of London (GB)]]

[[Category:Tao Ji of Austin TX (US)]]

[[Category:Nikita Lazarev of Ithaca NY (US)]]

[[Category:Paramvir Bahl of Bellevue WA (US)]]

DYNAMIC RE-ROUTING AND MODIFICATION OF LAYER TRAFFIC IN VIRTUALIZED RANS - A simplified explanation of the abstract

This abstract first appeared for US patent application 17825645 titled 'DYNAMIC RE-ROUTING AND MODIFICATION OF LAYER TRAFFIC IN VIRTUALIZED RANS

Simplified Explanation

The patent application describes methods and systems for re-routing layer traffic between servers in a virtualized Radio Access Network (vRAN) without disrupting the user experience or making modifications to the vRAN software stack.

  • The approach allows operators to migrate the physical layer (PHY) processing to different servers either on demand or automatically in response to unexpected events like server failures.
  • Unlike other network components, PHY processing in cellular networks does not have any hard state that needs to be migrated, making it easier to re-route layer traffic.
  • The re-routing mechanism involves using one or more message controllers (middleboxes) to intercept and redirect layer traffic between the PHY and Layer 2 (L2) protocols.
  • This re-routing can be done during planned maintenances or automatically in response to server failures, ensuring continuous network operation and minimizing disruptions.
  • The innovation enables operators to efficiently manage and optimize their vRAN infrastructure without impacting the user experience or requiring complex modifications to the software stack.


Original Abstract Submitted

Methods and systems for dynamically re-routing layer traffic between different servers with little user-visible disruption and without modifications to the vRAN software stack are provided. This approach enables operators to initiate a PHY migration either on demand (e.g., during planned maintenances) or to set up automatic migration on unexpected events (e.g., server failures). It is recognized that PHY processing in cellular networks has no hard state that must be migrated. As a result, layer traffic such as the PHY-L2 traffic or L2-PHY traffic can be simply re-routed to a different server. This re-routing mechanism is realized by interposing one or more message controllers (e.g., middlebox) in a communication channel between the PHY and L2.

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