Multi-Carrier Sidelink Coordination for 5G NR V2X Power Control
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Solution Overview
Problem
Existing 5G NR V2X communication systems are limited by single-carrier data transmission capabilities, leading to reduced communication quality when large data requirements are present, and inefficient power consumption due to continuous monitoring of multiple carriers.
Innovation Solution
Implement a method for multi-carrier sidelink communication by configuring and managing secondary carriers, including activation/deactivation states, through network device and user equipment coordination, ensuring proper carrier settings and feedback mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single-carrier data transmission is used, then device complexity is reduced, but communication quality deteriorates when large data requirements are present
Solution Approach 1:
The patent divides the communication system into multiple carriers (primary carrier and secondary carriers), where each carrier can be independently activated or deactivated. This segmentation allows the system to handle large data requirements by utilizing multiple carriers simultaneously, thereby improving communication quality without overwhelming the device complexity through modular carrier management
2Reliability
If multiple carriers are continuously monitored, then communication quality is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic carrier activation and deactivation mechanisms where secondary carriers are activated only when needed for data transmission and deactivated when not required. This dynamic approach allows the system to maintain high communication quality when multiple carriers are active while reducing power consumption by deactivating carriers during periods of low or no data transmission
Solution Approach 2:
The system changes the operational state parameter of carriers between active and inactive modes based on data transmission requirements. When data requirements are low or zero, the system transitions secondary carriers from active to inactive state, thereby maintaining communication quality capability while significantly reducing power consumption during idle periods
3Productivity
If multiple carriers are configured, then data transmission capacity is improved, but resource wastage occurs due to continuous monitoring
Solution Approach 1:
The patent implements periodic carrier activation and deactivation based on data transmission needs. Instead of continuously monitoring all configured carriers, the system periodically activates secondary carriers when data requires transmission and deactivates them when data transmission is complete, thereby maintaining high data transmission capacity when needed while avoiding resource wastage during idle periods
Data Source
AI summary
A wireless communication method implemented by a transmission user equipment includes receiving first secondary carrier status indication information from a network device, where the first secondary carrier status indication information indicates that each of a plurality of secondary carriers is in an activated state or a deactivated state, the plurality of secondary carriers are used for multi-carrier sidelink communication between the transmission user equipment and at least one reception user equipment, and each reception user equipment corresponds to at least one secondary carrier; sending second secondary carrier status indication information to each reception user equipment, where the second secondary carrier status indication information indicates that each of the at least one secondary carrier is in an activated state or a deactivated state; and when acknowledgment information is received from one or more reception user equipments, sending secondary carrier setting complete information to the network device.