Path Switch for Connected State Mobility in Wireless Networks
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Solution Overview
Problem
In service-based wireless communication architectures, handover processes often lack efficient mechanisms for updating paths between services and nodes, leading to redundancy in signaling and overhead due to the involvement of mobility services and the need for end marker packet transmission.
Innovation Solution
Implementing a method where a distributed node communicates directly with a service server to configure and execute a path switch during handover, allowing for data buffering and stopping data transmission to the source node, thereby reducing redundancy and overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a distributed node communicates directly with a service server to configure a path switch, then signaling redundancy is reduced and overhead is eliminated, but the complexity of the handover process increases due to the need for direct communication protocols
Solution Approach 1:
The patent extracts the mobility service involvement from the path switch process, allowing the distributed node to communicate directly with the service server. This removal of the intermediary mobility service eliminates the signaling redundancy and overhead that would otherwise be generated through multiple hops, while the direct communication path simplifies the overall process despite the initial appearance of increased complexity
Solution Approach 2:
The distributed node performs the path switch configuration autonomously by directly communicating with the service server without requiring mobility service intervention. This self-service approach allows the node to manage its own path switching, reducing the signaling burden on the network while maintaining simplified handover procedures through standardized direct communication interfaces
2Reliability
If end marker packets are transmitted during path switching, then data transmission to the source node is properly terminated, but the handover process becomes less efficient due to the additional signaling required
Solution Approach 1:
The patent removes the end marker packet transmission mechanism from the path switch process. By establishing direct communication between the distributed node and service server, the system can terminate data transmission to the source node through the path configuration itself rather than requiring additional termination signaling, thereby maintaining reliability while improving handover efficiency
Solution Approach 2:
The path switch configuration is performed in advance to establish the new data path before actual data transmission begins. This preliminary configuration ensures that data transmission termination is handled proactively through the path setup rather than requiring reactive end marker packets, thus maintaining reliable transmission control while enhancing overall handover efficiency
Data Source
AI summary
Aspects of this disclosure relate generally to mobility in a service-based architecture. Some aspects more specifically relate to path switching in a service-based architecture. In some examples, a distributed node may exchange signaling with a service server to configure and execute a path switch in connection with handover of a user equipment to the distributed node. For example, the distributed node may communicate with the service server directly. As another example, the distributed node may communicate with a mobility service to execute the path switch. In some examples, aspects described herein provide for a service server to buffer data and provide data forwarding in connection with the path switch.