V2X Resource Allocation via Multi-TTI Sensing
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Solution Overview
Problem
Current 5G communication systems face challenges in efficiently transmitting data on multiple transmission time intervals (TTIs) and managing resource allocation in vehicle-to-everything (V2X) systems, leading to reduced transmission performance and increased collisions between user equipment (UEs).
Innovation Solution
A method and apparatus that utilize a sensing module to detect scheduling assignments (SAs) and measure receiving power and energy across TTIs with different lengths, allowing for resource selection and transmission on optimal resources, thereby improving resource utilization and reducing collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple TTIs with different lengths are used for data transmission, then transmission flexibility and resource utilization are improved, but resource allocation complexity and collision management difficulty increase
Solution Approach 1:
The patent applies parameter changes by varying TTI lengths (short TTI and long TTI) to adapt to different transmission requirements. The system dynamically selects between sTTI and lTTI based on channel conditions and service types, changing the time parameter to optimize transmission flexibility while managing complexity through standardized resource pool configurations.
Solution Approach 2:
The patent segments the resource pool into multiple configurations, each optimized for specific TTI lengths. By dividing resources into dedicated pools for short TTIs and long TTIs, the system manages complexity through structured segmentation while maintaining adaptability across different transmission scenarios.
2Reliability
If sensing and resource selection is performed for multiple TTIs, then transmission reliability is improved, but processing time and computational overhead increase
Solution Approach 1:
The patent implements preliminary action through the sensing mechanism where UEs perform advance sensing of resource pools before data transmission. By pre-measuring receiving power and energy across multiple TTIs in advance, the system identifies suitable resources beforehand, ensuring reliable transmission while reducing real-time processing delays.
Solution Approach 2:
The system applies self-service through autonomous resource selection where each UE independently performs sensing, measures power levels, and selects resources without continuous network coordination. This self-service mechanism improves reliability through distributed intelligence while minimizing processing overhead by eliminating centralized control for each resource selection.
3Productivity
If resource pools are configured for different TTI lengths, then resource utilization efficiency is improved, but system complexity and configuration overhead increase
Solution Approach 1:
The patent applies universality by designing resource pools that can serve multiple functions across different TTI lengths. The same resource pool structure is reused for both short TTI and long TTI configurations, allowing a single pool to support multiple transmission modes. This multi-functionality improves resource utilization efficiency while controlling system complexity through standardized, reusable configurations.
4Productivity
If multiple antenna ports are used for data transmission, then data rate and transmission capacity are improved, but interference management complexity and signal processing overhead increase
Solution Approach 1:
The patent applies merging by combining multiple antenna ports (up to 8 ports) to transmit data simultaneously. The system merges the capabilities of multiple ports to achieve higher data rates and transmission capacity, utilizing spatial multiplexing to combine signals constructively while managing interference through coordinated resource allocation across the merged ports.
Data Source
AI summary
The disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as long term evolution (LTE). A method for operating a terminal is provided. The method includes detecting, scheduling assignment (SA) of another terminal in a sensing window based on transmission time intervals (TTIs) with different lengths in a resource pool; detecting a receiving power of a scheduled data channel based on the SA and a receiving energy of each sub-channel of each subframe; determining resources for data transmission based on the SA, the receiving power and the receiving energy; and transmitting data on the resources.