Sidelink Resource Forwarding for Conflict-Triggered UE Coordination
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Solution Overview
Problem
In wireless communications systems, Mode 2 sidelink operations lead to conflicts between UEs that are not in direct communication due to obstructions, resulting in resource reservation issues, and frequent forwarding of sidelink resource information increases signaling overhead and congestion.
Innovation Solution
UEs are configured with reporting configurations to transmit time/frequency resource information upon conflict detection, including encoded or decoded SCIs, to reduce conflicts and signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs frequently forward sidelink resource information to reduce conflicts, then sidelink coordination improves, but signaling overhead and network congestion increase
Solution Approach 1:
The patent changes the parameter of forwarding frequency from frequent/continuous to conflict-triggered/conditional. The reporting configuration includes a conflict detection mechanism that activates resource information forwarding only when conflicts are detected, rather than continuously forwarding information. This parameter change reduces signaling overhead while maintaining sidelink coordination effectiveness.
Solution Approach 2:
The system dynamically adjusts the forwarding behavior based on conflict detection. The reporting configuration enables UEs to switch between forwarding modes (conflict-triggered versus continuous) and adjusts the frequency of resource information transmission based on actual network conditions and conflict occurrence, optimizing the balance between coordination quality and signaling overhead.
2Measurement precision
If UEs transmit detailed time/frequency resource information, then conflict detection accuracy improves, but message size and processing overhead increase
Solution Approach 1:
The patent extracts and forwards only the essential elements needed for conflict detection and resolution. Instead of forwarding complete resource information, the system identifies and transmits specific conflict-related parameters such as resource overlaps and RSRP measurements. This extraction approach maintains detection accuracy while reducing message size and processing requirements.
Solution Approach 2:
The system applies partial action by forwarding only the necessary portion of resource information required for conflict resolution. The reporting configuration specifies which elements of resource information should be included in forwarded messages, avoiding transmission of redundant or unnecessary data, thus reducing processing overhead while maintaining sufficient accuracy for conflict detection.
Data Source
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AI summary
Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may be configured to trigger a sidelink message to one or more UE of set of multiple other UEs. The first UE may then generate the sidelink message based at least in part on the triggering. In some cases, the sidelink message may include time and frequency resource information associated with sidelink control information received and processed by the first UE. The first UE may multiplex the sidelink message with a sidelink data message. The first UE may then transmit the sidelink message multiplexed with the sidelink data message to the one or more UE of the set of multiple other UEs.