Communication Management Resource Transport Protocol Selection
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Solution Overview
Problem
Conventional LTE networks experience service breaks and performance degradation during handovers from 5G to 4G networks due to unsupported N26 signaling, leading to delays and losses in SIP session establishment for IMS voice calls, particularly because the communication management resource lacks intelligent transport protocol selection for MT IMS Voice sessions.
Innovation Solution
A method to inform the communication management resource about interworking capabilities between wireless networks without N26 signaling, allowing it to select either TCP or UDP transport for SIP signaling, with an updated retransmission schema for UDP to handle potential losses during network switchover, ensuring seamless IMS voice session establishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the communication management resource uses conventional transport protocol selection for SIP signaling during network handover, then the system maintains simplicity in protocol selection, but service break duration increases and performance degradation occurs during 5G to 4G handovers
Solution Approach 1:
The system dynamically selects transport protocols based on network conditions and handover scenarios. The communication management resource adapts its protocol selection (TCP vs UDP) according to the specific handover context, making the system flexible rather than static. This dynamic adaptation resolves the contradiction by allowing simple default behavior while providing complex adaptive capabilities when needed.
Solution Approach 2:
The invention changes the parameter of transport protocol selection based on network conditions and handover types. By modifying which protocol is used (TCP or UDP) and adjusting retransmission schemas according to the specific scenario, the system optimizes performance for each handover case without requiring permanently complex infrastructure.
2Loss of energy
If the system uses UDP transport with conventional retransmission schema for SIP signaling, then resource usage is minimized, but SIP message losses occur during network switchover
Solution Approach 1:
The system performs preliminary actions by proactively detecting handover scenarios and adjusting retransmission parameters before message loss occurs. The communication management resource identifies upcoming network switches and pre-configures appropriate retransmission schemas, preventing message loss rather than reacting to it afterward.
Solution Approach 2:
The invention implements feedback mechanisms where the system monitors network conditions and handover status, then adjusts retransmission behavior accordingly. This closed-loop control allows the system to learn from network conditions and optimize resource usage while maintaining reliability through condition-based retransmission adjustments.
3Loss of time
If the communication management resource lacks intelligent transport protocol selection capability, then device complexity is reduced, but service break duration increases during handovers
Solution Approach 1:
The communication management resource acts as an intermediary that intelligently mediates between different transport protocols and the SIP signaling system. It introduces smart protocol selection logic that translates complex protocol decisions into optimized communication paths, reducing service breaks without requiring the entire system to become complex.
Solution Approach 2:
The system performs preliminary protocol selection and configuration before handovers occur. By pre-determining the optimal transport protocol based on detected network conditions and handover scenarios, the system minimizes service disruption time without requiring complex real-time decision-making during the actual handover event.
Data Source
AI summary
A communication management resource receives first input registering user equipment to use wireless network services of a first wireless network and a second wireless network. The communication management resource receives second input from the user equipment registering the user equipment to use voice services. In response to receiving a phone communication indicating a corresponding phone call, the communication management resource selects a transport protocol from multiple possible transport protocols to establish a communication session between the communication management resource and the user equipment. The communication management resource initially establishes a communication link or communication session for the corresponding phone call over the first wireless network between the user equipment and the communication management resource using the selected transport protocol. The user equipment is then handed off to a communication link in the second wireless network to support the corresponding phone call.