UE Power Allocation Asynchronous Dual-Connectivity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In asynchronous dual-connectivity scenarios of LTE-A systems, the complex power allocation process for uplink channels across multiple base stations with non-fixed overlapping times poses significant implementation challenges for user equipment (UE), leading to increased complexity and difficulty in managing transmit power efficiently.
Innovation Solution
A power allocation method where the UE determines a reference channel and considers channels with overlapping times greater than a preset threshold, allocating power based on the required transmit power for both the reference channel and overlapping channels, thereby simplifying the power allocation process and reducing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE considers all overlapping uplink channels from multiple TAGs when allocating transmit power, then the power allocation accuracy is improved, but the computational complexity increases significantly
Solution Approach 1:
The patent segments the set of all overlapping uplink channels into multiple subsets based on TAG grouping. For each TAG, the UE identifies channels that overlap with the target channel, creating manageable groups rather than processing all channels simultaneously. This segmentation reduces the computational burden while maintaining accurate power allocation within each TAG context.
Solution Approach 2:
The patent applies partial action by considering only the necessary subset of overlapping channels (those within the same TAG) rather than all possible overlapping channels from multiple TAGs. This partial consideration approach achieves sufficient power allocation accuracy for the specific TAG context without the excessive computational cost of evaluating all potential overlapping channels across all TAGs.
2Reliability
If the UE allocates power considering all TAGs and their overlapping subframes, then the transmission reliability is improved, but the implementation difficulty increases
Solution Approach 1:
The patent divides the power allocation process into separate stages for each TAG. The UE first identifies the target uplink channel, then segments the consideration set to include only channels from the same TAG that have overlapping subframes. This segmented approach maintains transmission reliability by ensuring proper power coordination within each TAG while significantly reducing implementation difficulty compared to evaluating all TAGs simultaneously.
3Measurement precision
If the UE processes all overlapping channels across multiple base stations, then the power management accuracy is improved, but the processing time increases
Solution Approach 1:
The patent applies partial action by limiting the power management consideration to only those channels within the same TAG that have overlapping subframes with the target channel. This partial scope approach achieves sufficient power management accuracy for the specific TAG context while reducing processing time by excluding channels from other TAGs that would require additional evaluation but contribute minimally to the specific power allocation decision.
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
A power allocation method and apparatus that relate to the wireless communications field are provided, which can reduce complexity of allocating, by UE in an asynchronous dual-connectivity scenario, transmit power to an uplink channel that is in a TAG of a base station and in an uplink subframe, and are easy for implementation. The method includes: determining, by the UE, a first channel in a first subframe; determining, by the UE, n second channels in n second subframes, where the n second channels include m second channels in m second subframes of the n second subframes, and/or n-m second channels whose subframe numbers are the same as a subframe number of the first subframe, and the m second subframes are subframes having overlapping time greater than a preset threshold or greater than or equal to a preset threshold with the first subframe; allocating, by the UE, transmit power at least to the first channel according to transmit power required for the first channel and transmit power required for the n second channels; and sending, by the UE, data to a first base station/first cell group on the first channel according to the transmit power allocated to the first channel.