Dynamic Transmission Power Notification for CoMP Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In fourth-generation mobile communication systems using CoMP, there is no effective solution for power notification after puncturing reference signals to reduce interference and improve channel estimation accuracy.
Innovation Solution
A method and apparatus for notifying transmission power by decreasing power on resource elements colliding with neighboring cell reference signals, obtaining and notifying a power non-decreased resource element parameter, and reallocating power to increase signal-to-interference-plus-noise ratio (SINR) and throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If transmission power is decreased on resource elements colliding with neighboring cell reference signals, then interference on reference signals is reduced and channel estimation accuracy is improved, but transmission power is wasted and SINR of service data deteriorates
Solution Approach 1:
The patent changes the transmission power parameter of resource elements dynamically based on their function. Service data resource elements receive increased power while reference signal resource elements maintain standard power, optimizing both channel estimation accuracy and transmission efficiency
Solution Approach 2:
Different transmission power levels are applied to different resource elements based on their specific function. Service data REs in non-colliding positions receive higher power while reference signal REs maintain standard power, creating localized quality optimization
2Productivity
If transmission power is increased on service data resource elements, then SINR and throughput are improved, but power consumption increases and may cause interference to other signals
Solution Approach 1:
Transmission power is selectively increased only for service data resource elements that do not collide with reference signals, while reference signal resource elements maintain standard power levels. This localized power allocation improves data throughput without unnecessarily increasing overall power consumption
Solution Approach 2:
The resource element spectrum is segmented into different functional categories (service data REs vs. reference signal REs), with different power allocation strategies applied to each segment, optimizing both throughput and energy efficiency
3Device complexity
If all resource elements are transmitted at standard power, then power allocation is simple, but power waste occurs on resource elements that could benefit from power increase
Solution Approach 1:
The transmission power parameter is changed from a uniform standard power level to a differentiated power allocation scheme where service data REs receive increased power based on their specific needs, while reference signal REs maintain standard power, optimizing energy efficiency without excessive complexity
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
The present invention discloses a method and an apparatus for notification of emitted energy. The method includes: performing an emitted energy decrease on resource elements in a current cell that have a same time-frequency location as part or all of resource elements where a reference signal of a neighboring cell is located; obtaining an emitted energy parameter of an energy non-decreased resource element (NRE) in the current cell according to a decreased amount of emitted energy of an emitted energy decreased resource element (DRE); and notifying the emitted energy parameter of the NRE to a user equipment (UE). According to embodiments of the present invention, the waste of emitted energy may be avoided, the emitted energy of part of REs is increased, and further, the signal to interference plus noise ratio (SINR) and throughput of service data may be increased.