V2V Sidelink Carrier Aggregation for Autonomous High-Rate Communication
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Solution Overview
Problem
Existing wireless communication systems face challenges in enabling efficient sidelink communication, particularly in scenarios where mobile devices operate autonomously without network assistance, such as when they are out of coverage or transmitting large amounts of data, leading to capacity issues in terms of data rate and number of users.
Innovation Solution
The implementation of carrier aggregation techniques in wireless networks, allowing user equipment (UE) to aggregate multiple component carriers for sidelink communications, enabling efficient resource allocation and synchronization across aggregated carriers for vehicle-to-vehicle (V2V) transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If mobile devices perform sidelink communication autonomously without network assistance, then communication independence is improved, but capacity in terms of data rate and number of users deteriorates
Solution Approach 1:
The patent combines multiple component carriers into a single sidelink communication channel, aggregating their resources to achieve higher data rates. This merging of carriers allows autonomous devices to overcome the capacity limitations of single-carrier sidelink communication while maintaining communication independence.
Solution Approach 2:
The patent introduces carrier aggregation as an additional dimension for resource allocation in sidelink communication. By utilizing multiple frequency carriers simultaneously, the system expands the available communication bandwidth beyond what is achievable with a single carrier, thereby increasing data rate capacity.
2Productivity
If mobile devices transmit large amounts of data in sidelink resources, then data throughput is improved, but capacity in terms of number of users deteriorates
Solution Approach 1:
The patent segments the total data traffic into multiple streams transmitted over different component carriers. This segmentation allows the system to support multiple users simultaneously by allocating different carrier combinations to different user pairs, thereby increasing the number of supported users while maintaining high data throughput.
Solution Approach 2:
The patent implements dynamic carrier allocation where the set of aggregated carriers is selected and configured based on current channel conditions, traffic demands, and user requirements. This dynamic adaptation allows the system to optimize the balance between data throughput and number of supported users in real-time.
3Productivity
If multiple component carriers are aggregated for sidelink communication, then data rate is improved, but device complexity deteriorates
Solution Approach 1:
The patent implements self-service mechanisms where user equipment autonomously selects, configures, and manages its own carrier aggregation parameters based on channel conditions and traffic requirements. This self-configuration reduces the need for complex network control and simplifies device implementation while maintaining high data rates.
Solution Approach 2:
The patent utilizes parameter changes in carrier aggregation configuration to adapt to different communication scenarios. By dynamically adjusting parameters such as the number of aggregated carriers, modulation schemes, and resource allocation patterns, the system achieves high data rates without requiring permanently complex device architectures.
Data Source
AI summary
Embodiments of a User Equipment (UE) and methods for communication are generally described herein. The UE may be configured for carrier aggregation using a primary component carrier (CC) and a secondary CC. The UE may attempt to detect a sidelink synchronization signal (SLSS) from another UE on the primary CC. The UE may, if the SLSS from the other UE is detected: determine, based on the detected SLSS, a common time synchronization for the primary CC and the secondary CC for vehicle-to-vehicle (V2V) sidelink transmissions in accordance with the carrier aggregation. The UE may, if the SLSS from the other UE is not detected: transmit an SLSS to enable determination of the common time synchronization for the primary CC and the secondary CC by the other UE. The SLSS may be transmitted on the primary CC.