Sidelink Carrier Aggregation Duplex Conflict Resolution
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Solution Overview
Problem
Current sidelink carrier aggregation technologies face challenges with duplexing issues, particularly in simultaneous transmission and reception on different carriers, leading to conflicts and potential communication disruptions due to half-duplex constraints.
Innovation Solution
The proposed solution involves determining conflicting symbols in sidelink carrier aggregation and applying schemes such as puncturing, rate matching, subslot transmission, or prioritization to manage these conflicts, allowing for effective communication across multiple carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If simultaneous transmission and reception on different carriers is implemented in sidelink carrier aggregation, then communication efficiency and throughput are improved, but duplexing conflicts and half-duplex constraint violations occur
Solution Approach 1:
The patent segments the time interval into different portions, allocating specific time resources for transmission on first carrier and reception on second carrier. By dividing the time domain into non-overlapping segments, the system enables simultaneous multi-carrier operation while preventing duplexing conflicts through temporal separation of conflicting operations.
2Power
If carrier aggregation is used to increase bandwidth, then data rate is improved, but symbol conflicts between carriers occur due to half-duplex constraints
Solution Approach 1:
The patent determines conflicting symbols between first carrier and second carrier in advance, before actual transmission occurs. By performing preliminary conflict detection and identifying overlapping time resources, the system can proactively adjust resource allocation or apply rate matching to avoid symbol conflicts, thereby maintaining high data rates without harmful interference.
3Quantity of substance
If multiple carriers are activated for communication, then capacity is improved, but complexity of managing transmission and reception conflicts increases
Solution Approach 1:
The patent enables user equipment to autonomously determine conflicting symbols between multiple carriers and self-manage the resolution through predefined schemes such as puncturing or rate matching. This self-service approach allows the system to handle multi-carrier conflict management without requiring complex centralized coordination, thereby maintaining scalability and reducing operational complexity.
Data Source
AI summary
An apparatus includes at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: determine whether the apparatus is expected to perform communication on a first carrier within a time interval, and communication on a second carrier within the time interval; determine whether there is a conflict between at least one symbol of the first carrier and at least one symbol of the second carrier within the time interval; determine at least one scheme to use for performing communication with at least one user equipment, when there is the conflict between the at least one symbol of the first carrier and the at least one symbol of the second carrier within the time interval; and perform the communication with the at least one user equipment using the at least one scheme.