Uplink Power Control Using Cross Interference Offset Sets
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Solution Overview
Problem
Current power control methods in LTE and 5G wireless communications systems fail to effectively manage cross interference, impacting system performance and not meeting the requirements of future mobile communications.
Innovation Solution
An uplink power control method that considers cross interference by using power offset sets, where terminal devices receive power control indication information from network devices to determine optimal transmit power, reducing signaling overheads and alleviating interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If prior art power control methods are used in LTE and 5G systems, then basic uplink power control is achieved, but cross interference management is insufficient and system performance deteriorates
Solution Approach 1:
The patent introduces multiple power offset sets (first power offset set and second power offset set) with different parameter configurations to adapt to different cross interference scenarios. The network device configures these offset sets and indicates which set to use based on current channel conditions and interference levels, allowing dynamic parameter adjustment to optimize power control performance while managing cross interference between cells
Solution Approach 2:
The patent implements dynamic selection between multiple power offset sets based on real-time channel conditions. The network device can indicate to the terminal device which power offset set to use through dynamic signaling, enabling the power control parameters to adapt dynamically to changing interference conditions rather than using fixed parameters
2Object-affected harmful factors
If multiple power offset sets are configured to manage cross interference, then interference mitigation improves, but signaling overhead increases
Solution Approach 1:
The patent segments the power offset configuration into multiple distinct sets (first power offset set and second power offset set), each optimized for specific interference scenarios. This segmentation allows the system to pre-configure multiple parameter combinations and then simply indicate which set to use, rather than transmitting all possible parameter values, thereby reducing signaling overhead while maintaining the ability to manage different interference conditions
Solution Approach 2:
The network device performs preliminary configuration of multiple power offset sets before actual power control operations. By pre-configuring these sets and storing them in the terminal device, the system eliminates the need to transmit detailed parameter information during real-time operations, reducing signaling overhead while maintaining the capability to adapt to different interference scenarios
Data Source
AI summary
An uplink power control method and a communications device are described. The method includes receiving, by a terminal device, power control indication information sent by a network device. The power control indication information indicates a first power offset set, and the first power offset set is any one of at least two power offset sets. The method further includes receiving, by the terminal device, a transmit power control (TPC) command sent by the network device. The TPC indicates a first offset in the first power offset set. The method includes determining, by the terminal device, uplink transmit power based on the first offset. Impact of cross interference is considered in determining the uplink transmit power. Thus, the method can meet requirements of future mobile communications and improve system performance.