Inter-Base Station Uplink Power Coordination via Resource Status Exchange
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Solution Overview
Problem
In inter-base station carrier aggregation systems, existing technologies face inefficiencies in uplink resource allocation due to the lack of coordination between base stations, leading to wasted transmission resources and reduced throughput.
Innovation Solution
A method where a first base station acquires the maximum uplink transmit power allocated by user equipment (UE) based on the status of uplink resources scheduled by a second base station, allowing for coordinated power allocation and efficient resource management across multiple base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a PHR is triggered in inter-base station CA, then the PHR can be received by one base station, but the receiving base station cannot know the uplink resource allocation status of other base stations, leading to uncoordinated power allocation and resource waste
Solution Approach 1:
The patent introduces an intermediary mechanism where the receiving base station sends a request message to other base stations to obtain their uplink resource allocation status. This intermediary communication resolves the information asymmetry problem, allowing coordinated power allocation across multiple base stations without directly exposing internal allocation details, thereby improving transmission efficiency while maintaining information security.
2Productivity
If the base station allocates uplink transmit power without considering other base stations' resource status, then power allocation is simple and quick, but transmission resource waste occurs and throughput is reduced
Solution Approach 1:
The patent implements a feedback mechanism where base stations exchange uplink resource allocation status information through request and response messages. This feedback loop enables each base station to make informed power allocation decisions that consider the overall system state, reducing power waste while maximizing UE throughput through coordinated resource management.
3Device complexity
If base stations operate independently in inter-base station CA, then system complexity is low and operation is simple, but resource coordination between base stations is poor
Solution Approach 1:
The patent applies preliminary action by having base stations proactively send request messages to obtain uplink resource allocation status information before making power allocation decisions. This advance information gathering enables coordinated resource management without requiring complex real-time coordination mechanisms, balancing system complexity with resource allocation efficiency.
Data Source
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AI summary
Embodiments of the present invention provide a method for controlling an uplink transmit power in inter-base station carrier aggregation, a base station, and a device. The method includes: acquiring, by a first base station, a maximum uplink transmit power that is allocated by user equipment UE to the first base station, and configuring, by the first base station, an uplink transmit power for the UE according to the maximum uplink transmit power. In the method provided by the present invention, because the maximum transmit power allocated to the first base station is allocated according to status information of an uplink resource of a second base station, a power that is allocated by the UE to each base station can be coordinated. Therefore, the first base station can accurately allocate an uplink transmit power to the UE, and a throughput of the UE is increased while requirements of multiple base stations for transmit powers are satisfied. Because statuses of uplink resources configured by other base stations are considered between base stations, a phenomenon of waste of the allocated uplink transmit power may be reduced, and even avoided, thereby improving transmission efficiency.