RIS-Aware Cross-Mode Scheduling for UE Path Switching
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Solution Overview
Problem
Wireless communication systems face challenges in efficiently configuring UE devices for direct or RIS-assisted communication modes, leading to potential communication disruptions and high power consumption due to improper transmission configuration states.
Innovation Solution
UEs receive configurations for transmission states that include both RIS-assisted and non-RIS-assisted modes, allowing them to adapt their communication paths based on downlink control information and resource thresholds, thereby reducing power consumption and improving communication reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE is configured with multiple transmission configuration states (both RIS-assisted and non-RIS-assisted modes), then the adaptability and communication reliability are improved, but the device complexity and power consumption increase
Solution Approach 1:
The patent implements dynamic switching between different transmission configuration states based on real-time channel conditions and control information. The UE can transition between RIS-assisted and non-RIS-assisted modes as needed, making the system adaptable to changing environmental conditions while managing complexity through conditional logic rather than static configuration
Solution Approach 2:
The patent changes the transmission configuration parameters (such as whether to use RIS assistance) based on received control information and resource threshold evaluations. By dynamically adjusting these parameters rather than maintaining fixed configurations, the system achieves adaptability without permanently increasing device complexity
2Reliability
If the UE monitors downlink control information and resource thresholds to determine transmission mode, then the communication reliability is improved, but the power consumption increases
Solution Approach 1:
The patent dynamically changes the monitoring parameters (such as whether to monitor downlink control information or evaluate resource thresholds) based on current transmission configuration states and received control information. This conditional monitoring approach maintains communication reliability by adjusting monitoring intensity to match actual needs, thereby reducing unnecessary power consumption
Solution Approach 2:
The UE autonomously determines its transmission mode by evaluating received control information and resource thresholds without requiring continuous network control. This self-service mechanism allows the UE to make local decisions about power consumption versus reliability trade-offs, reducing overall system power usage while maintaining adequate communication reliability
3Loss of time
If the UE switches between RIS-assisted and non-RIS-assisted transmission paths, then the loss of time due to communication failures is reduced, but the device complexity increases
Solution Approach 1:
The patent implements dynamic path switching between RIS-assisted and non-RIS-assisted transmission modes based on real-time channel conditions and received control information. This dynamic approach minimizes communication failures by automatically transitioning to alternative paths when needed, reducing time loss while managing switching complexity through event-driven logic rather than continuous complex processing
Solution Approach 2:
The patent uses downlink control information and resource threshold evaluations as intermediaries to facilitate path switching decisions. These intermediaries provide structured guidance for transitions between transmission modes, reducing the complexity of direct path switching by introducing intermediate decision-making layers that simplify the switching logic
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a configuration including a first group of transmission configuration states associated with transmission via a configurable surface and a second group of transmission configuration states independent of the configurable surface. The UE may receive downlink control information according to a first transmission configuration state of the first group of transmission configuration states. The UE may receive the downlink control information via a transmission path including the configurable surface. The downlink control information may include a grant scheduling a data transmission according to a second transmission configuration state of the second group of transmission configuration states. The UE may perform or receive the data transmission according to the second transmission configuration state. The downlink control information based on a set of resources associated with transmission via the configurable surfaces satisfying a threshold.