Multicarrier Handover Information Segmentation for LTE-A
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Solution Overview
Problem
In LTE-A systems, there is a lack of solution for the source eNB to indicate to the target eNB which cells to select as primary (Pcell) and secondary (Scell) during multicarrier handover, affecting the efficient transition of UE between eNBs.
Innovation Solution
A method and system for transmitting handover information that allows the target eNB to distinguish and select Pcell and Scell sets based on identification information such as security key information, cell type indication, or list type, enabling accurate selection during multicarrier handover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation technology is introduced to expand bandwidth in LTE-A system, then system throughput and peak rate are improved, but the complexity of handover information transmission increases due to the need to indicate multiple candidate cells (Pcell and Scell sets) to target eNB
Solution Approach 1:
The patent segments the handover information by dividing candidate cells into two distinct sets: Pcell candidate set and Scell candidate set. This segmentation allows the target eNB to clearly identify which cells are suitable for primary component carrier selection and which are suitable for secondary component carrier selection, thereby managing the complexity introduced by carrier aggregation without compromising system throughput.
2Adaptability or versatility
If multiple candidate cells are indicated during handover in LTE-A system, then the target eNB has more flexibility in selecting optimal Pcell and Scell, but the information transmission overhead increases
Solution Approach 1:
The patent applies local quality by providing different types of information for different cell sets. The Pcell candidate set receives specific indication information suitable for primary carrier selection, while the Scell candidate set receives different indication information suitable for secondary carrier selection. This targeted approach provides the target eNB with the appropriate flexibility for each cell type without unnecessarily increasing overall information overhead.
Data Source
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AI summary
The present invention discloses method, system and equipment for transmitting handover information. The method comprises: source eNB sends handover request to target eNB, and distinguished the carried primary cell (Pcell) candidate set and secondary cell (Scell) candidate set through the identification information carried by said handover request. That carrying indication information of target eNB is used for selecting Pcell and Scell through handover request information during multicarrier handover is realized through the embodiments of the present invention.