Sidelink Feedback Power Control via Adaptive Parameter Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current mobile communication networks face challenges in efficiently managing and optimizing communication protocols across diverse wireless devices and base stations supporting multiple technologies, leading to suboptimal performance and resource utilization.
Innovation Solution
The implementation of New Radio (NR) user and control plane protocol stacks, along with advanced channel management techniques, enables flexible configuration and adaptive bandwidth allocation, allowing for efficient communication between wireless devices and base stations, regardless of their technology release or capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sidelink feedback messages are transmitted using high power to ensure reliable delivery, then communication reliability is improved, but uplink power consumption increases and may cause interference
Solution Approach 1:
The patent dynamically adjusts the power level parameter for sidelink feedback messages based on channel conditions and message priority. Instead of using fixed high power, the system changes power parameters adaptively to achieve reliable delivery while minimizing unnecessary power consumption and interference.
Solution Approach 2:
The system implements dynamic power control where the transmit power for sidelink feedback messages is adjusted in real-time based on channel quality indicators, historical feedback success rates, and current network conditions. This dynamic approach ensures reliability when needed while reducing power usage during favorable conditions.
2Productivity
If multiple wireless devices transmit simultaneously in the same resource pool, then resource utilization efficiency is improved, but collision probability increases leading to packet loss
Solution Approach 1:
The patent implements a feedback mechanism where receiving devices send acknowledgment messages back to transmitting devices. This feedback loop allows the system to detect collisions and retransmit lost packets, thereby maintaining high resource utilization while compensating for collision-induced packet loss through adaptive retransmission strategies.
Solution Approach 2:
The system performs preliminary collision detection and avoidance measures by monitoring channel occupancy and using reservation signals before actual data transmission. This preliminary action reduces collision probability while maintaining efficient resource utilization by coordinating transmissions in advance.
3Adaptability or versatility
If the network supports multiple technology releases and device capabilities, then system adaptability is improved, but protocol stack complexity increases
Solution Approach 1:
The patent implements a universal protocol stack design where a single protocol implementation can handle multiple technology releases and device capabilities. The protocol includes optional features and parameters that can be selectively activated based on device capability indications, allowing one protocol stack to serve multiple purposes without requiring separate implementations for each release.
Solution Approach 2:
The protocol stack is segmented into mandatory core functions and optional enhanced functions. Devices indicate their capability levels, and the network configures only the necessary segments for each device type. This segmentation reduces the effective complexity each device must handle while maintaining support for multiple releases through selective activation of protocol segments.
Data Source
AI summary
A first wireless device receives a configuration message indicating: a first power control parameter set for a first sidelink feedback type; and a second power control parameter set for a second sidelink feedback type. Based on the sidelink feedback type indication one of the first power control parameter set and the second power control parameter set is selected as a selected power control parameter set. A transmit power of a sidelink feedback signal is determined based on the selected power control parameter set. The sidelink feedback signal is transmitted to the second wireless device based on the transmit power.