Inter-eNB Buffer State Reporting for LTE-A Aggregation
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Solution Overview
Problem
There is no existing solution for making a buffer state report in the scenario of inter-eNB aggregation in LTE-A systems, where multiple eNBs are involved in scheduling uplink data transmission for a user equipment.
Innovation Solution
A method and system where user equipment determines and reports buffer state information to multiple network side devices participating in aggregation, enabling these devices to perform scheduling based on the reported information, even across different eNBs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If inter-eNB aggregation is introduced to improve peak rates and spectrum utilization, then system capacity and resource efficiency are improved, but the existing BSR scheme becomes inapplicable and scheduling complexity increases
Solution Approach 1:
The patent segments the buffer state reporting by introducing separate BSR mechanisms for different eNBs in inter-eNB aggregation scenarios. The UE maintains separate buffer state information for each serving eNB and reports accordingly, allowing each eNB to independently schedule resources without being overwhelmed by complex aggregate buffer management
Solution Approach 2:
The patent introduces an intermediary BSR reporting mechanism that bridges the UE and multiple eNBs. The BSR acts as an intermediate information carrier that translates the UE's buffer state into a format that can be processed by individual eNBs, enabling coordinated scheduling without direct complex interaction between all components
2Adaptability or versatility
If multiple eNBs perform independent uplink scheduling in inter-eNB aggregation, then resource allocation flexibility is improved, but buffer state information availability deteriorates as the existing BSR scheme is no longer applicable
Solution Approach 1:
The patent applies local quality by providing tailored buffer state information to each eNB based on its specific scheduling needs and the UE's buffer state for that particular eNB. Each eNB receives relevant buffer information localized to its own scheduling domain, enabling flexible resource allocation while maintaining accurate buffer state awareness
Solution Approach 2:
The patent implements preliminary action by having the UE proactively report buffer state information to each serving eNB before scheduling decisions are made. This advance reporting ensures that buffer state information is available to each eNB in advance, enabling them to perform independent scheduling without information loss
Data Source
AI summary
Embodiments of the present invention relate to the technical field of wireless communications, and more particularly to a buffer state reporting method, system, and device, so as to perform buffer state reporting regarding an inter-eNB aggregation scenario. A buffer state reporting method provided by an embodiment of the present invention comprises: a user equipment, that aggregates resources of multiple network side devices, determining buffer state information; the user equipment reporting the buffer state information to at least one network side device participating in the aggregation, so as to realize buffer state reporting regarding the inter-eNB aggregation scenario, and enable multiple eNBs to obtain the buffer state information in the case of inter-eNB aggregation, thereby realizing resource scheduling.