UE EPS Bearer Context Deactivation on Network Reject
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G communication systems, when a bearer resource modification request is rejected by the network, the User Equipment (UE) lacks clear instructions on how to handle the active EPS bearer context, leading to issues such as data stalls, call mutes, and screen blanks due to packet filter mismatches and deletions, which degrade user experience.
Innovation Solution
The UE is configured to deactivate the EPS bearer context locally upon receiving a bearer resource modification reject message with a specific cause value and transmit a Tracking Area Update (TAU) request message to synchronize the EPS bearer context with the network, ensuring resource management and minimizing resource wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE deletes packet filters on the UE side when receiving a bearer resource modification reject message, then the bearer resource conflict is resolved, but the bearer becomes inactive and data transmission stops
Solution Approach 1:
The UE performs preliminary actions by deleting packet filters locally upon receiving a bearer resource modification reject message, proactively preventing potential resource conflicts before they affect data transmission. This preliminary local cleanup ensures consistency between UE and network bearer states.
Solution Approach 2:
The UE initiates a bearer resource modification request to the network, creating a feedback loop where the UE communicates its packet filter changes and receives confirmation or rejection. This feedback mechanism ensures both UE and network maintain consistent bearer resource states.
2Productivity
If the UE maintains the bearer active after packet filter deletion, then data transmission can continue, but resource wastage occurs and synchronization issues arise
Solution Approach 1:
The UE autonomously manages its own bearer resources by deleting packet filters locally and initiating synchronization with the network. This self-service approach allows the UE to independently resolve resource conflicts without continuous network intervention, improving efficiency.
Solution Approach 2:
The UE changes the state parameters of the bearer by deleting packet filters and updating bearer context information. This parameter change transforms the bearer from an active but conflicting state to a synchronized state, resolving the contradiction between continuity and resource wastage.
3Reliability
If the UE synchronizes bearer context with the network through bearer resource modification request, then resource consistency is achieved, but additional signaling overhead is generated
Solution Approach 1:
The UE extracts and deletes only the conflicting packet filter information locally rather than retransmitting entire bearer context. This extraction approach minimizes signaling overhead by communicating only the necessary changes to the network.
Solution Approach 2:
The UE performs preliminary local deletion of packet filters before initiating synchronization with the network. This preliminary action reduces the amount of data that needs to be exchanged during the bearer resource modification request, thereby reducing signaling overhead.
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Embodiments herein provide a method implemented in a User Equipment (UE). The method includes receiving, from a Mobility Management Entity (MME), a bearer resource modification reject message with a cause value, in response to a bearer resource modification request message sent to the MME. Further, the method includes deactivating an Evolved Packet System (EPS) bearer context information.