RIS Working Mode Signaling for Uplink-Downlink Consistency
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Solution Overview
Problem
The existing RIS technologies face challenges in indicating its working mode, leading to uplink and downlink symmetry issues that affect downlink signal reception and uplink signal transmission for the same terminal.
Innovation Solution
A method and apparatus are provided to indicate the RIS working mode through first information sent by a network side device, allowing terminals or RIS nodes to update their working modes accordingly, ensuring consistent uplink and downlink operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the RIS working mode is fixed for uplink and downlink symmetry, then the device complexity is reduced, but the signal reception and transmission performance deteriorates
Solution Approach 1:
The patent applies dynamics by enabling the RIS working mode to change over time rather than remaining fixed. The network side device dynamically indicates different working modes for uplink and downlink transmissions, allowing the RIS to adapt its configuration based on current communication requirements, thus improving signal performance without requiring complex manual configuration
Solution Approach 2:
The patent implements feedback mechanisms where the network side device receives information about terminal communication requirements and accordingly selects appropriate RIS working modes. This feedback loop enables the system to adjust RIS configuration based on actual signal conditions, resolving the contradiction between fixed complexity and variable performance
2Adaptability or versatility
If the RIS working mode is dynamically adjusted for different terminals, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The patent introduces the network side device as an intermediary that manages RIS working mode indications. Instead of terminals directly controlling RIS modes or the RIS autonomously deciding modes, the network side device acts as a mediator that receives terminal requirements and translates them into appropriate RIS configuration indications, simplifying the overall system architecture while maintaining adaptability
Solution Approach 2:
The patent utilizes parameter changes by indicating different working mode parameters to the RIS based on terminal requirements. The network side device modifies RIS operational parameters (working modes) dynamically, enabling adaptability across different terminals and scenarios without requiring fundamental changes to the RIS hardware architecture
Data Source
AI summary
A working mode indicating method and apparatus and a device are provided. The method includes: receiving first information sent by a network side device, where the first information indicates an RIS working mode or a relay working mode.