Power Headroom Transmission in 5G Beamforming Systems
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Solution Overview
Problem
In the 5G communication system using beamforming, there is a problem of inconsistency between the downlink channel and the uplink channel due to differences in beam gains, which affects the reliability of power headroom information transmission.
Innovation Solution
The solution involves a method and device for transmitting terminal power headroom information in a beamforming system, where the terminal and base station dynamically adjust beam gains and exchange beam management information to accurately calculate and transmit power headroom information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beamforming is used to increase data transfer rate and delivery distance, then system performance is improved, but inconsistency between downlink and uplink channels occurs due to beam gain differences
Solution Approach 1:
The patent implements feedback mechanisms where the terminal measures downlink beam gains and reports them to the base station. The base station uses this feedback to adjust uplink beam gains, ensuring consistency between downlink and uplink channels while maintaining the benefits of beamforming for data transfer rate and delivery distance.
Solution Approach 2:
The patent dynamically adjusts beam gain parameters based on measured channel conditions. By changing beam gain parameters adaptively, the system maintains channel consistency between downlink and uplink while preserving the high data transfer rate and extended delivery distance achieved through beamforming.
2Productivity
If terminal transmits power headroom information based on downlink channel, then power allocation is optimized, but accuracy decreases due to beam gain inconsistency
Solution Approach 1:
The terminal measures downlink beam gains and feeds back this information to the base station. The base station uses this feedback to calculate accurate power headroom information by compensating for beam gain differences, thereby maintaining both power allocation efficiency and measurement accuracy despite channel inconsistency.
Solution Approach 2:
The patent introduces beam gain measurement and compensation as an intermediary mechanism. By measuring downlink beam gains and using them as a reference to adjust uplink power calculations, the system achieves accurate power headroom information while maintaining optimized power allocation efficiency.
3Productivity
If base station increases resource allocation based on positive power headroom information, then system throughput is improved, but terminal power consumption increases
Solution Approach 1:
The base station receives accurate power headroom information from the terminal through feedback mechanisms that account for beam gain consistency. Based on this accurate information, the base station optimizes resource allocation to improve system throughput while avoiding unnecessary resource allocation that would increase terminal power consumption.
Solution Approach 2:
The system dynamically adjusts resource allocation parameters based on accurate power headroom measurements. When power headroom is positive, resources are allocated to improve throughput; when negative, resources are reduced to minimize terminal power consumption, maintaining optimal balance between throughput and energy efficiency.
Data Source
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AI summary
The present disclosure relates to a communication technique which combines IoT technology with a 5G communication system for supporting a higher data transfer rate than existing 4G systems, and a system thereof. The present disclosure can be applied to an intelligent service (for example, a smart home, a smart building, a smart city, a smart car or a connected car, and services related to health care, digital education, retail business, security and safety, etc.) on the basis of 5G communication technology and IoT-related technology. The present method provides a power headroom information transmission method of a terminal, the headroom information transmission method including: a step of determining whether to transmit second power headroom information, on the basis of information about each beam included in first power headroom information, in a wireless communication system supporting beamforming; and a step of transmitting the second power headroom information to a base station when the transmission of the second power headroom information is determined.