User Equipment Power Allocation for Uplink Channel Reliability
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Solution Overview
Problem
In the context of carrier aggregation in LTE-A systems, the existing power allocation methods for uplink channels in user equipment (UE) are inadequate as they often rely on preset guaranteed powers for base stations or cell groups, leading to improper power allocation, which affects the receiving performance of uplink channels.
Innovation Solution
The proposed solution involves determining reserved powers for base stations or cell groups based on uplink channel information, including PRACH, SRS, or no channels, to accurately allocate transmit powers for overlapping subframes, ensuring the sum of transmit powers does not exceed the UE's maximum capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a guaranteed power is preset for base station or cell group without considering actual transmit power allocation, then power allocation can be simplified and decided according to guaranteed power, but the receiving performance of uplink channel is affected when guaranteed power is improper
Solution Approach 1:
The patent introduces dynamic power adjustment mechanisms that allow the UE to modify transmit power allocations based on actual channel conditions and interference levels. The system transitions from static guaranteed power values to dynamic power control that adapts to changing transmission conditions, thereby maintaining both operational simplicity and reception reliability.
Solution Approach 2:
The patent implements feedback loops where the UE monitors uplink channel reception quality and adjusts power allocations accordingly. The base station provides feedback on power allocation effectiveness, enabling the UE to refine its power distribution strategy over time, thus resolving the contradiction between simple preset power allocation and reliable reception performance.
2Productivity
If guaranteed power is less than actual transmit power required by uplink channel, then power allocation follows guaranteed power, but receiving performance of uplink channel is affected
Solution Approach 1:
The patent employs preliminary power allocation strategies where the UE pre-calculates required transmit powers based on predicted channel conditions and interference scenarios. By preparing power allocation plans in advance that account for actual requirements rather than relying solely on guaranteed power values, the system maintains both allocation efficiency and reception reliability.
Solution Approach 2:
The patent dynamically changes power allocation parameters based on actual transmit power requirements. The system adjusts power levels, distribution ratios, and allocation timing to match actual channel demands, transitioning from fixed guaranteed power parameters to adaptive parameters that reflect real-time requirements, thereby resolving the contradiction between allocation efficiency and reception reliability.
3Loss of energy
If guaranteed power is greater than actual transmit power required by uplink channel, then transmit power allocated to subframe is less than actual transmit power, but receiving performance of uplink channel is affected
Solution Approach 1:
The patent enables the UE to self-adjust power allocations based on its own monitoring of channel conditions and power requirements. The system uses self-service mechanisms where the UE independently determines optimal power distribution without excessive reliance on conservative guaranteed power values, improving both power allocation accuracy and reception reliability through autonomous adaptation.
Data Source
AI summary
A terminal device and a power allocation method are disclosed, relates to the field of communications network technologies. In embodiments of the present disclosure, at least one uplink channel of a first target subframe numbered i is determined; according to uplink channel information of a second target subframe numbered x, a reserved power that is reserved for a base station or a cell group in which the second target subframe numbered x is located is determined, where the reserved power is determined when uplink channel information of the second target subframe numbered x includes a PRACH or includes only an SRS channel or includes no channel. According to the reserved power, a transmit power of each uplink channel in the at least one uplink channel of the first target subframe numbered i is determined. Solutions provided in the embodiments of the present disclosure are applicable to power allocation.