Continuous-Slot Sidelink Scheduling for Low-Latency Unlicensed Transmission
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing increasing data traffic and latency requirements, particularly in sidelink communication scenarios like V2X, where vehicles and infrastructure exchange data directly, necessitating improved resource allocation and transmission methods.
Innovation Solution
The proposed method involves a first device receiving information for resource selection in multiple consecutive slot transmissions (MCSt) and transmitting sidelink control information (SCI) and medium access control protocol data units (MAC PDUs) through physical sidelink channels, with an interval of less than or equal to 16 microseconds, enabling efficient scheduling and data exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple consecutive slot transmissions are used to increase data traffic capacity, then communication throughput is improved, but transmission reliability deteriorates due to resource allocation complexity and latency issues
Solution Approach 1:
The patent segments the multiple consecutive slot transmissions into individual schedulable units, where each slot can be independently managed and scheduled. This allows the system to handle MCSt as discrete time resources while maintaining overall transmission reliability through per-slot control and coordination mechanisms.
2Adaptability or versatility
If resource selection information is transmitted for multiple consecutive slots, then scheduling flexibility is improved, but control overhead increases
Solution Approach 1:
The patent employs a universal resource selection information structure that can be applied across multiple consecutive slots. The same SCI format and resource allocation mechanism serve multiple slots simultaneously, reducing the need for separate control signaling for each slot while maintaining scheduling flexibility through the MCSt framework.
3Loss of time
If interval between multiple resources is reduced to less than or equal to 16 microseconds, then latency is reduced, but channel access complexity increases in unlicensed band
Solution Approach 1:
The patent establishes continuous transmission opportunities across multiple consecutive slots with intervals of ≤16 microseconds, creating an uninterrupted data flow. This continuous action approach allows the system to maintain high data rates while managing channel access complexity through coordinated scheduling that ensures seamless transmission across slot boundaries.
Data Source
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AI summary
Proposed is an operating method of a first device (100) in a wireless communication system. The operating method may comprise the steps of: receiving, from a second device (200), information related to resource selection for a plurality of resources for MCSt; by selecting a first resource on the basis of the information, including the first source in the plurality of resources; transmitting, on the basis of the first resource, SCI for scheduling of a PSSCH through a PSCCH; and transmitting, on the basis of the first resource, a MAC PDU through the PSSCH.