Source Base Station eDDA Information Forwarding During Handover
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Solution Overview
Problem
Existing LTE-A systems lack a solution for obtaining eDDA assistance information from UE when handed over from one base station to another, leading to inefficiencies in resource configuration and increased air interface signaling overhead.
Innovation Solution
A method where the source base station inquires about the target base station's eDDA assistance information reporting and processing capability and transmits relevant UE information, enabling the target base station to configure radio resources based on received eDDA assistance information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE reports eDDA assistance information to the network side, then the network side can configure appropriate radio resource parameters, but the air interface signaling overhead increases
Solution Approach 1:
The source base station stores the eDDA assistance information of the UE before handover occurs. When handover to a target base station that supports eDDA, the stored information is directly transmitted without requiring the UE to report again, thus reducing air interface signaling overhead while ensuring the target base station has the necessary information for accurate radio resource configuration.
2Reliability
If the UE handover between base stations is performed, then the communication continuity is maintained, but the target base station cannot obtain the eDDA assistance information of the UE
Solution Approach 1:
The source base station acts as an intermediary that stores and forwards the eDDA assistance information to the target base station during handover. This intermediary mechanism ensures that the information is preserved and transferred without loss, allowing the target base station to obtain the necessary assistance information while maintaining communication continuity.
3Reliability
If the source base station transmits eDDA assistance information to the target base station, then the target base station can configure radio resources accurately, but the handover signaling overhead increases
Solution Approach 1:
The source base station stores the eDDA assistance information in advance before handover. During handover, this pre-stored information is transmitted to the target base station in a single operation, rather than requiring continuous reporting or multiple transmissions, thus reducing the overall handover signaling overhead while ensuring accurate radio resource configuration at the target base station.
Data Source
AI summary
Disclosed are an information transmission method and a device thereof. The method comprises: after determining that a UE needs to conduct base station handover, a source base station which supports an eDDA auxiliary information reporting and processing capability querying whether a candidate target base station supports the eDDA auxiliary information reporting and processing capability or not; and if the source base station queries that the candidate target base station supports the eDDA auxiliary information reporting and processing capability or fails to query whether the candidate target base station supports the eDDA auxiliary information reporting and processing capability or not, or when the source base station does not query whether the candidate target base station supports the eDDA auxiliary information reporting and processing capability or not, the source base station sending to the candidate target base station the eDDA auxiliary information about the UE, to enable the candidate target base station which supports the eDDA auxiliary information reporting and processing capability to conduct radio resource parameter configuration on the UE based on the received eDDA auxiliary information about the UE. By using the embodiments of the present invention, during the process of handover a UE from a source base station to a target base station, the efficiency for the target base station which supports an eDDA auxiliary information reporting and processing capability to acquire eDDA auxiliary information about the UE is improved, and the air interface signalling overhead is reduced.