Sidelink Resource Reservation Forwarding for 5G Interference Reduction
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Solution Overview
Problem
Current wireless communication systems face challenges in optimizing sidelink communications, particularly in resource reservation and interference management, which affect the reliability and efficiency of device-to-device transmissions in emerging 5G technologies like NR.
Innovation Solution
Implementing a method where a first user equipment (UE) selectively forwards resource reservation information only when specific conditions are met, such as signal quality thresholds, to conserve resources and reduce interference, allowing UEs to autonomously select and reserve sidelink resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs continuously forward resource reservation information to ensure complete information propagation, then communication reliability is improved, but network overhead and interference increase
Solution Approach 1:
The patent changes the parameter of information forwarding from continuous/unconditional to selective/conditional. UEs only forward resource reservation information when specific conditions are met (e.g., when the receiving UE is in a sleeping state or when resource conflicts are detected), thereby reducing unnecessary forwarding operations that cause interference while maintaining reliable communication when needed.
Solution Approach 2:
The patent implements feedback mechanisms where UEs monitor channel conditions, resource usage status, and communication quality before forwarding reservation information. This feedback loop allows the system to dynamically adjust forwarding behavior based on actual network conditions, ensuring reliability is maintained only when necessary while avoiding interference during optimal periods.
2Productivity
If UEs forward all resource reservation information to maximize resource allocation efficiency, then productivity is improved, but energy consumption increases
Solution Approach 1:
The patent applies partial action by having UEs forward only the necessary portion of resource reservation information rather than all information unconditionally. The system determines selectively which reservation information to forward based on current network conditions, UE states, and potential resource conflicts, thereby reducing energy consumption while maintaining sufficient productivity for effective resource allocation.
Solution Approach 2:
The patent makes the information forwarding process dynamic by adjusting forwarding behavior based on real-time conditions such as UE activity states, channel quality, and resource availability. The system transitions between active forwarding and suppressed forwarding modes, optimizing the balance between productivity and energy consumption according to current network demands.
3Reliability
If UEs implement strict resource reservation protocols to ensure reliable transmissions, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the resource reservation protocol into manageable components with clear forwarding conditions and decision logic. By breaking down the complex protocol into discrete, condition-based forwarding rules, the system maintains transmission reliability while reducing the operational complexity burden on individual UEs through more systematic and rule-based protocol execution.
Data Source
AI summary
Certain aspects of the present disclosure provide a method for wireless communications by a first user equipment, comprising receiving resource reservation information indicating a reservation of a future resource by at least a second user equipment, and forwarding the resource reservation information to one or more other user equipments when at least one condition is met.