5G AMBR Enforcement via Initial Context Setup
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Solution Overview
Problem
In 5G wireless communication networks, the absence of the UE Aggregate Maximum Bit Rate (AMBR) value during initial context setup procedures prevents radio network nodes from enforcing bit rate limits and performing traffic policing, leading to inadequate network resource management.
Innovation Solution
A method where network nodes send context setup and resource setup requests that include the UE AMBR value, ensuring it is associated with wireless devices before resource setup, allowing for proper bit rate enforcement and traffic policing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the Initial Context Setup procedure is used to purely setup the UE context without setting up the first PDU sessions, then the UE context is established, but the UE Aggregate Maximum Bit Rate is not provided from the AMF to the NG-RAN node
Solution Approach 1:
The patent applies preliminary action by including the UE Aggregate Maximum Bit Rate information element in the Initial Context Setup Request message before PDU session setup. This ensures the NG-RAN node receives the UE AMBR value in advance, enabling it to perform bit rate enforcement and traffic policing when needed, rather than waiting for subsequent PDU session setup procedures.
2Device complexity
If the UE AMBR value is not provided during initial context setup, then the context setup procedure is simpler, but the NG-RAN node cannot perform UE AMBR enforcement and traffic policing
Solution Approach 1:
The patent incorporates the UE AMBR value into the Initial Context Setup Request message structure, making it available to the NG-RAN node before resource setup. This preliminary inclusion of the bit rate parameter enables the radio network node to enforce UE AMBR and perform traffic policing reliably, while maintaining a straightforward message structure that builds upon existing protocols.
Data Source
AI summary
Methods are provided in which a first network node sends a context setup request message to a second network node, the context setup request message not comprising a wireless device (WD) aggregate maximum bit rate (AMBR) value associated with a wireless device, determines that it has not previously provided the WD AMBR value to the second network node in the context setup request message, and then sends a resource setup request message to the second network node, the resource setup request message comprising the WD AMBR value associated with the wireless device. Related network nodes and computer program products are also provided.