Uplink MIMO Power Control via Dynamic MCS Adjustment
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Solution Overview
Problem
Current wireless communication networks face challenges in uplink channel power control due to interference, particularly in multiple-input multiple-output (MIMO) transmissions, where existing power control methods do not effectively adjust for varying modulation and coding schemes, leading to performance degradation.
Innovation Solution
A method and apparatus for receiving an indication of a power adjustment mode for uplink MIMO transmissions and adjusting the power accordingly, allowing for modulation and coding scheme (MCS) adjustments to optimize power control in advanced telecommunications networks, specifically in LTE-A systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing power control methods are used in uplink MIMO transmissions, then the system maintains simplicity in power control implementation, but performance degradation occurs due to interference and inability to adjust for varying modulation and coding schemes
Solution Approach 1:
The patent applies dynamics by transitioning from static power control to dynamic power adjustment based on transmission conditions. The base station determines power adjustment values for each codeword based on current channel conditions, interference levels, and modulation and coding schemes, allowing the power control mechanism to adapt dynamically to varying transmission requirements while maintaining overall system performance
Solution Approach 2:
The patent implements local quality by applying different power adjustment strategies to different codewords within the same uplink transmission. Each codeword can have its own power adjustment value optimized for its specific modulation and coding scheme, rather than using a uniform power control approach for all transmissions, thereby improving overall reliability without excessive complexity
2Productivity
If power control is adjusted for each modulation and coding scheme in uplink MIMO, then transmission performance improves, but signaling overhead and control complexity increase
Solution Approach 1:
The patent merges power control adjustments with existing downlink control information structures. The power adjustment values for different codewords are incorporated into the same downlink control messages that already carry scheduling and resource allocation information, thereby improving network efficiency without significantly increasing overall signaling overhead
Solution Approach 2:
The patent creates a universal power control framework that can handle multiple codewords, modulation schemes, and coding rates through a unified adjustment mechanism. This multi-functional approach allows the same power control structure to serve various transmission configurations, improving productivity while minimizing the need for separate control signaling for each scenario
Data Source
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AI summary
A method of adjusting the modulation and coding scheme for uplink channel power control in advanced telecommunication networks includes receiving an indication of a power adjustment mode for an uplink multiple - input multiple - output (MIMO) transmission (610). The power of the uplink MIMO transmission is adjusted according to the received power adjustment mode (612).