Sidelink Indication Signaling for Hidden Terminal Resource Collisions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sidelink communication technologies lack effective coordination mechanisms for resource selection between user equipment, leading to resource collisions and receiving failures due to hidden terminal issues.
Innovation Solution
A sidelink communication method that determines resource collision conditions and sends indication information to coordinate resource selection, using downlink control information or pre-configuration to manage resource collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user equipment independently selects resources for sidelink communication without coordination, then device complexity is reduced and ease of operation is improved, but resource collisions occur leading to reduced reliability
Solution Approach 1:
The patent introduces a network device as an intermediary that coordinates resource selection between user equipment. The network device receives resource selection information from multiple UEs, determines collisions, and provides coordination information to resolve conflicts. This mediator approach improves communication reliability by preventing resource collisions while the network device manages the complexity centrally rather than requiring complex distributed coordination protocols between UEs.
2Reliability
If resource coordination mechanisms are implemented between user equipment, then resource collisions are reduced improving reliability, but device complexity and system overhead increase
Solution Approach 1:
The network device serves as a central intermediary that simplifies the coordination system. Instead of requiring complex peer-to-peer coordination between UEs, the network device centrally collects resource selection information, identifies collisions, and distributes coordination decisions. This approach improves resource selection reliability while keeping individual UE complexity low, as UEs only need to report to and receive instructions from the network device.
Solution Approach 2:
The patent implements a feedback mechanism where UEs report their resource selection information to the network device, which then provides coordination information back to the UEs. This closed-loop feedback system allows the network device to make informed coordination decisions based on actual resource selections, improving reliability while maintaining manageable system complexity through structured information exchange.
3Reliability
If indication information is sent to coordinate resource selection, then resource collision is reduced improving communication reliability, but signaling overhead and loss of information increase
Solution Approach 1:
The patent extracts only the essential collision information from the complete resource selection data. Instead of transmitting full resource selection details, the network device identifies specific collision scenarios and extracts only the necessary coordination information (such as which resources to avoid or alternative resources to use). This selective extraction reduces signaling overhead while maintaining the reliability needed to resolve resource collisions.
Data Source
AI summary
A sidelink communication method is applied to a first device, and includes: determining a first condition being met, the first condition representing occurrence of collision of selected resources between different devices; and in response to determining the first condition being met, sending first indication information, the first indication information indicating removal of resource collision.