Sidelink Resource Pool Selection Across LTE and NR Subcarrier Spacing
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Solution Overview
Problem
Current sidelink communication technologies are not adaptable to the different requirements of LTE and NR systems, particularly in terms of subcarrier spacing, which limits their effectiveness in various applications such as V2X communication.
Innovation Solution
A method and device for transmitting sidelink signals that allow a UE to select different resources, including subcarrier spacing, from dedicated resource pools for PSCCH and PSSCH transmissions, enabling adaptation to different system requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sidelink communication technology is based on LTE system architecture with fixed subcarrier spacing, then the system can maintain simplicity and ease of operation, but it cannot adapt to different requirements of NR systems and various applications such as V2X communication
Solution Approach 1:
The patent implements dynamic resource pool configuration where the network can configure multiple resource pools with different subcarrier spacings (e.g., 15kHz for LTE, 30kHz for NR) based on application requirements. The UE dynamically selects appropriate resource pools for PSCCH and PSSCH transmissions according to the specific service needs, enabling adaptability from fixed to dynamic operation modes.
Solution Approach 2:
The patent changes the subcarrier spacing parameter to accommodate different system requirements. By configuring resource pools with different subcarrier spacings (15kHz, 30kHz, 60kHz) and allowing selective usage, the system can adapt to both LTE and NR requirements without being constrained to a single parameter value, thus resolving the contradiction between adaptability and complexity.
2Reliability
If a single resource pool configuration is used for both PSCCH and PSSCH, then the device complexity is reduced, but the transmission reliability and data rate cannot be optimized for diverse applications
Solution Approach 1:
The patent segments the resource pool configuration into separate configurations for PSCCH and PSSCH. Each channel can be independently configured with appropriate subcarrier spacings and resource allocations. This segmentation allows optimized configuration for control channels (reliability) and data channels (data rate) separately, improving overall transmission reliability without excessive complexity increase.
Solution Approach 2:
The patent creates a universal resource pool configuration mechanism that can serve multiple purposes: supporting both LTE and NR systems, accommodating different V2X applications, and optimizing for various transmission conditions. The same resource pool framework handles diverse requirements through configurable parameters, achieving multi-functionality without proportionally increasing complexity.
3Adaptability or versatility
If different subcarrier spacings are used for PSCCH and PSSCH to meet specific application requirements, then the adaptability to diverse applications is improved, but the difficulty of detecting and measuring resources increases
Solution Approach 1:
The patent implements feedback mechanisms where the network configures resource pools based on UE capabilities and application requirements, and UEs provide feedback on their supported configurations. This feedback loop enables the network to optimize subcarrier spacing selections for PSCCH and PSSCH, balancing adaptability with detectability by considering actual UE capabilities and channel conditions.
Solution Approach 2:
The patent performs preliminary configuration of resource pools with appropriate subcarrier spacings before actual transmissions. The network pre-configures multiple resource pools with different parameters (15kHz, 30kHz, 60kHz) and informs UEs in advance, allowing UEs to prepare their detection and measurement procedures accordingly, thus reducing the difficulty of resource detection during actual operation.
Data Source
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AI summary
The present 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). The present disclosure provides a method for transmitting a sidelink signal. The method comprises: determining a Physical Sidelink Control CHannel (PSCCH) transmission mode allowed in a PSCCH transmission resource pool and a Physical Sidelink Shared CHannel (PSSCH) transmission mode allowed in a PSSCH transmission resource pool, respectively; determining a resource for transmitting a PSCCH and a resource for transmitting a PSSCH from the PSCCH transmission resource pool and the PSSCH transmission resource pool respectively; and transmitting the PSCCH according to the determined PSCCH transmission mode and the resource for transmitting the PSCCH and transmitting the PSSCH according to the determined PSSCH transmission mode and the resource for transmitting the PSSCH. The present disclosure also provides a corresponding device and storage media.