Dynamic TDD Uplink Power Control for Cross-Interference Mitigation
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Solution Overview
Problem
In dynamic TDD systems, there is a lack of effective uplink power control schemes to manage cross-interference between uplink and downlink transmissions between different cells, leading to inefficient channel capacity and increased power consumption.
Innovation Solution
A method and apparatus for controlling uplink power by a terminal and network device, involving the reception of configuration information, determination of uplink power control parameter sets, and performing power adjustments based on interference degrees and resource sets to minimize interference and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink power is increased to improve signal quality and channel capacity, then communication reliability is improved, but cross-interference with downlink transmissions in neighboring cells increases
Solution Approach 1:
The patent implements dynamic uplink power control where the terminal adjusts its uplink transmission power based on real-time TDD configuration information received from the network device. The power control parameter changes dynamically according to the current uplink-downlink configuration, allowing the system to adapt to varying interference conditions while maintaining communication reliability.
Solution Approach 2:
The patent changes the power control parameter (uplink power) based on the TDD configuration parameter. When the TDD configuration changes between different uplink-downlink patterns, the terminal receives updated power control parameters from the network device and adjusts its transmission power accordingly, thereby resolving the contradiction between maintaining signal quality and reducing cross-interference.
2Productivity
If traditional power control is applied in dynamic TDD scenarios, then channel capacity may be improved, but cross-interference between uplink and downlink transmissions cannot be effectively managed
Solution Approach 1:
The network device provides feedback to the terminal in the form of TDD configuration information and power control parameters. The terminal uses this feedback to adjust its uplink power, creating a closed-loop control system that simultaneously optimizes channel capacity and manages cross-interference in dynamic TDD scenarios.
Solution Approach 2:
The patent introduces dynamic power control that adapts to changing TDD configurations. Instead of using fixed power control parameters, the system continuously updates power control parameters based on current TDD configuration information, enabling effective interference management while maintaining high channel capacity utilization.
3Object-generated harmful factors
If uplink power is continuously adjusted to adapt to varying interference conditions, then cross-interference is reduced, but system complexity increases
Solution Approach 1:
The terminal autonomously adjusts its uplink power based on TDD configuration information received from the network device. The power control mechanism is self-serving in that the terminal independently makes power adjustments according to the received configuration parameters without requiring complex centralized control, thereby reducing overall system complexity while effectively managing cross-interference.
Data Source
AI summary
A method for controlling an uplink power includes: receiving first configuration information sent by a network device; determining at least one uplink power control parameter set; selecting an uplink power control parameter set corresponding to a target transmission resource set from the at least one uplink power control parameter set; and performing uplink power adjustment on the target transmission resource set.