Adaptive Multi-Component Carrier Scheduling for PUSCH Transmissions
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Solution Overview
Problem
Wireless communication networks face challenges in maintaining data transmission reliability and efficient resource utilization due to interference and packet delay issues during physical uplink shared channel (PUSCH) transmissions, leading to subpar user experience and network unreliability.
Innovation Solution
Adaptive multi-component carrier scheduling, where user equipment (UE) receives downlink control information to schedule PUSCH transmissions using multiple component carriers, switching to additional carriers when the uplink packet delay budget is exceeded, ensuring timely completion of data packets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a UE transmits PUSCH using a scheduled number of component carriers, then resource utilization is efficient, but transmission reliability deteriorates when packet delay budget is exceeded
Solution Approach 1:
The patent implements dynamic component carrier switching where the UE adapts the number of component carriers used for PUSCH transmission based on real-time packet delay budget conditions. When the remaining PDB exceeds a threshold, the UE switches from a first number of CCs to a second number of CCs, making the system flexible and adaptive to changing transmission conditions rather than using a fixed configuration.
Solution Approach 2:
The patent changes the parameter of component carrier quantity based on the packet delay budget status. The UE monitors the remaining PDB and adjusts the number of component carriers accordingly - using fewer CCs when PDB is sufficient and more CCs when PDB is approaching expiration, thereby optimizing transmission reliability without unnecessary complexity.
2Reliability
If the UE uses more component carriers for PUSCH transmission, then data transmission reliability improves, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent applies partial action by using additional component carriers only when necessary - specifically when the remaining packet delay budget exceeds a predetermined threshold. The UE does not continuously use the maximum number of CCs but rather activates additional carriers partially, only when the transmission conditions require enhanced reliability to meet delay requirements.
Solution Approach 2:
The system dynamically adjusts the number of active component carriers based on real-time PDB monitoring. The UE switches between different numbers of CCs depending on whether the remaining PDB exceeds the threshold, creating a dynamic resource allocation strategy that balances reliability needs with resource efficiency rather than using a static configuration.
3Loss of time
If the UE switches to additional component carriers when packet delay budget is exceeded, then transmission timeliness improves, but device complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring the UE with a threshold value for the packet delay budget before transmission begins. This threshold is established in advance through RRC signaling or other configuration mechanisms, allowing the UE to make immediate switching decisions without complex real-time calculations when the PDB condition is met.
Solution Approach 2:
The patent employs feedback mechanisms where the UE continuously monitors the remaining packet delay budget during PUSCH transmission and compares it against the pre-configured threshold. This feedback loop enables the UE to detect when switching conditions are met and automatically transition to additional component carriers, creating a closed-loop control system that manages complexity through structured feedback rather than open-loop complexity.
Data Source
AI summary
This disclosure provides systems, methods, and devices for wireless communication that support adaptive multi-component carrier scheduling for physical uplink shared channel (PUSCH) transmissions. In some aspects, a method of wireless communication includes a user equipment (UE) receiving from a base station, a downlink control information configured to schedule a PUSCH transmission to the base station using a first number of component carriers. The UE may transmit to the base station a portion of the PUSCH transmission via the first number of component carriers. The UE may then transmit, to the base station, the remaining portion of the PUSCH transmission using a second number of component carriers based on an uplink packet delay budget (PDB) remaining after transmitting the portion of the PUSCH transmission via the first number of component carriers. In some aspects, the second number of component carriers is greater than the first number of component carriers.