Base Station Handover Request Message Processing
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Solution Overview
Problem
In the handover process of communication technologies, there is a waste of resources as multiple target base stations prepare for user equipment (UE) without knowing if they will be the final target, leading to inefficient resource utilization and potential handover failures.
Innovation Solution
A method where a first base station receives a handover request message, determines if it is an initial or forwarded request, and only saves the UE context if it is forwarded, allowing it to act as a prepared base station for potential reestablishment, thus optimizing resource utilization and improving handover success ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple target base stations prepare handover resources upon receiving handover request messages, then handover reliability is improved, but communication resource utilization deteriorates due to unnecessary resource preparation
Solution Approach 1:
The patent applies preliminary action by having intermediate base stations pre-save UE contexts when receiving forwarded handover request messages. This allows these base stations to quickly become target base stations if needed, improving handover reliability without requiring all base stations to prepare full handover resources in advance, thus avoiding resource waste.
Solution Approach 2:
The patent implements local quality by differentiating the behavior of base stations based on their role in the handover process. Source base stations send handover requests, intermediate base stations save UE contexts conditionally, and only selected target base stations prepare full handover resources. This localized differentiation improves resource utilization while maintaining handover reliability where needed.
2Reliability
If multiple target base stations prepare handover resources, then reestablishment success ratio is improved, but resource waste increases
Solution Approach 1:
The patent uses preliminary action by having intermediate base stations pre-save UE contexts upon receiving forwarded handover request messages. This creates a pool of potential target base stations with necessary UE information already available, improving reestablishment success ratio without requiring all of them to allocate full handover resources in advance, thus reducing resource waste.
Solution Approach 2:
The patent changes the state parameter of base stations from 'unprepared' to 'conditionally prepared' by saving UE contexts. This intermediate state allows base stations to be quickly activated as target base stations when needed, improving reestablishment success while avoiding the resource overhead of full handover preparation at all base stations.
3Adaptability or versatility
If base stations save UE context for forwarded handover requests, then handover flexibility is improved, but information processing complexity increases
Solution Approach 1:
The patent applies local quality by implementing selective context saving only at intermediate base stations receiving forwarded handover request messages, not at all base stations. This localized approach improves handover flexibility by creating multiple potential target base stations with UE context, while minimizing information processing complexity by limiting the scope of this operation to specific base stations in the handover path.
Data Source
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AI summary
Embodiments of the present invention discloses an information processing method, which includes: receiving, by a first base station, a handover request message from a second base station; and judging, by the first base station, whether the handover request message is an initial handover request message directly sent by a source base station in a handover process or a forwarded handover request message; if a judging result is that the handover request message is the forwarded handover request message, saving, by the first base station, a user equipment, UE, context in the handover request message so as to become a prepared base station of the UE. Adopting the technical solutions of the embodiments of the present invention can improve a reestablishment success ratio.