RIS Location-Aware Sidelink Parameter Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in optimizing sidelink communication between user equipment (UEs) due to the dynamic changes in the wireless environment caused by reconfigurable intelligent surfaces (RIS), which affect signal propagation and reliability, especially when RIS devices change their configuration over time.
Innovation Solution
The method involves determining RIS location information and configuring sidelink communication parameters based on this information to perform sidelink communications effectively, with the base station transmitting RIS location details to UEs and the RIS being configured to be visible or invisible during specific time slots or pattern durations to minimize interference and ensure reliable communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If RIS devices are deployed to improve wireless communication, then signal propagation and coverage are enhanced, but the dynamic reconfiguration of RIS causes interference and reduces communication reliability
Solution Approach 1:
The base station determines RIS location information and communicates it to UEs before sidelink communication occurs. This preliminary action allows UEs to pre-configure their communication parameters and anticipate RIS reconfiguration patterns, preventing interference rather than reacting to it after it occurs.
Solution Approach 2:
The system dynamically adapts sidelink communication parameters based on RIS location information and reconfiguration patterns. UEs adjust their transmission timing, frequency selection, and beamforming directions in real-time according to the predicted RIS state, making the communication system flexible enough to handle RIS-induced channel variations.
2Reliability
If RIS location information is determined and used to configure sidelink parameters, then communication reliability improves, but system complexity increases due to additional configuration and coordination
Solution Approach 1:
The base station automatically determines and broadcasts RIS location information without requiring manual configuration or complex coordination between UEs and RIS. The system uses existing base station resources and signaling channels to provide this information, allowing UEs to self-configure their sidelink parameters based on the provided location data without additional system complexity.
3Object-affected harmful factors
If RIS is configured to be visible or invisible during specific time slots, then interference is minimized and communication reliability improves, but the complexity of managing communication patterns increases
Solution Approach 1:
The RIS operates in periodic communication patterns, alternating between visible and invisible states during specific time slots. This periodic behavior creates predictable interference patterns that UEs can anticipate and adapt to, reducing the need for complex real-time interference management while minimizing harmful effects through regular on-off cycling.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the reliability and efficiency of sidelink communications by accounting for the dynamic changes in the wireless environment caused by RIS devices, allowing UEs to adapt their communication strategies and improve channel quality and power control.
Implementation Method 1
the RIS may be able to receive a wireless signal at one particular direction and may reflect the received wireless signal to another particular direction
Data Source
AI summary
Various aspects to improve a sidelink communication by UEs in a presence of a reconfigurable intelligent surface (RIS) are provided. In an aspect, the UE may determine RIS location information for a RIS device controlled by a base station, configure one or more sidelink communication parameters based on the RIS location information, and perform a sidelink communication with a second UE based on the one or more sidelink communication parameters. In an aspect, the UE may receive, from a base station, a RIS configuration setting indicating communication patterns of a RIS device controlled by the base station, the communication patterns being respectively associated with pattern durations, select a pattern duration of the pattern durations, and perform a sidelink communication with a second UE during the selected pattern duration of the pattern durations that is associated with a respective communication pattern of the communication patterns.