PSFCH Carrier Selection in Multi-Carrier NR-V2X Sidelink
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing single-carrier transmission mode for sidelink data in NR-V2X communication systems limits the throughput of sidelink transmission, as the receiving terminal uses the same carrier for both sidelink data and PSFCH, necessitating a method to improve carrier selection for PSFCH transmission.
Innovation Solution
The receiving terminal selects a carrier for PSFCH transmission based on first indication information, carrier configuration information of PSFCH, and channel busy ratio (CBR) to optimize carrier usage in multi-carrier sidelink communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the receiving terminal uses the same carrier for both sidelink data and PSFCH transmission, then the device complexity is reduced, but the throughput and reliability of sidelink transmission deteriorate
Solution Approach 1:
The patent applies dynamics by making the carrier selection for PSFCH transmission flexible and adaptive rather than fixed. The receiving terminal dynamically selects a carrier for PSFCH based on multiple factors including carrier configuration information, Channel Busy Ratio (CBR), and indication information from the sending terminal. This dynamic carrier selection allows the system to optimize throughput and reliability by choosing the most appropriate carrier at transmission time, resolving the contradiction between simplicity and performance.
2Productivity
If multiple carriers are used for sidelink data transmission, then the throughput is improved, but the carrier selection complexity for PSFCH increases
Solution Approach 1:
The patent applies parameter changes by using multiple selection criteria (carrier configuration information, CBR, indication information) to determine the PSFCH carrier. Instead of a simple fixed rule, the system changes parameters such as selecting carriers based on CBR thresholds or configuration information to manage complexity while maintaining high throughput from multi-carrier data transmission.
Solution Approach 2:
The patent incorporates feedback mechanisms where the sending terminal provides indication information about preferred carriers, and the receiving terminal uses CBR feedback to assess channel conditions. This feedback loop enables intelligent carrier selection for PSFCH that accounts for current system state, balancing complexity and performance in multi-carrier scenarios.
3Device complexity
If the PSFCH transmission uses the same carrier as sidelink data, then the system is simpler to implement, but the reliability of feedback transmission deteriorates
Solution Approach 1:
The patent uses dynamics by enabling the receiving terminal to dynamically select a carrier for PSFCH transmission based on real-time conditions including carrier configuration, CBR measurements, and sending terminal indications. This dynamic approach allows the system to choose carriers that maximize feedback reliability while maintaining implementation simplicity through automated selection algorithms.
Data Source
AI summary
Provided in the embodiments of the present application are a wireless communication method and a device. The method comprises: a first terminal receiving sidelink data, which is sent by a second terminal on a plurality of carriers; and according to at least one of the following: the plurality of carriers, first indication information, carrier configuration information of a PSFCH, and a CBR, the first terminal selecting at least one carrier for transmitting the PSFCH.