Base Station Time-Window Scheduling for Low-Latency Packet Alignment
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Solution Overview
Problem
The semi-persistent scheduling mechanism in wireless communication systems often results in data packet delays due to misalignment with semi-static time domain resources at the access network, failing to meet service transmission delay requirements.
Innovation Solution
A base station sets a transmission time window with defined cycles, start positions, and lengths, determining target and available time units for data packet transmission and sending indication signals to align data packets with scheduling resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If semi-persistent scheduling mechanism is used, then signaling overhead is reduced and terminal energy consumption is lowered, but data packet transmission delay increases due to misalignment with semi-static time domain resources
Solution Approach 1:
The patent introduces dynamic adjustment mechanisms to the semi-persistent scheduling system. The base station dynamically determines transmission time windows and sends indication signals to align data packets with scheduling resources in real-time, allowing the system to adapt to varying network conditions and service requirements while maintaining the energy efficiency benefits of semi-persistent scheduling.
Solution Approach 2:
The patent changes key timing parameters of the semi-persistent scheduling mechanism by introducing configurable transmission time windows, cycles, start positions, and lengths. These parameter adjustments enable the system to optimize both energy consumption and transmission delay based on specific service requirements and network conditions.
2Device complexity
If semi-persistent scheduling with fixed time domain resources is used, then scheduling complexity is reduced, but transmission delay requirements cannot be met due to resource misalignment
Solution Approach 1:
The base station performs preliminary actions by pre-configuring transmission time windows, cycles, start positions, and lengths before actual data transmission. Indication signals are sent in advance to notify user terminals of upcoming data packets, allowing both the base station and user terminals to prepare appropriately, thereby reducing transmission delay while maintaining scheduling simplicity.
3Loss of time
If data transmission is aligned with semi-static time domain resources, then transmission delay requirements are met, but signaling overhead and terminal energy consumption increase
Solution Approach 1:
The patent implements a feedback mechanism where the base station monitors network conditions and service requirements, then sends indication signals to user terminals to adjust transmission timing. This feedback loop enables the system to achieve precise timing alignment only when necessary, rather than continuously, thereby meeting delay requirements while minimizing terminal energy consumption compared to fully dynamic scheduling.
Data Source
AI summary
The present application relates to the technical field of wireless communications, and provides a data transmission method and apparatus, a base station, a user terminal, and an electronic device. The solution includes: setting a transmission time window; determining a target transmission time unit in the transmission time window; sending a data packet to a user terminal in the target transmission time unit. In the present application, a base station can set a transmission time window, and then determine a target transmission time unit in the transmission time window, and send a data packet to a user terminal in the target transmission time unit. In this way, a base station sends a data packet to a user terminal in the target transmission time unit in the transmission time window, so that a data packet received by the user terminal aligns with a corresponding scheduling time domain resource, and the delay requirement for service transmission can be met.