Multi-Terminal Scheduling Through Shared Time-Frequency Grants
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Solution Overview
Problem
Existing communication systems face high downlink control signaling overhead in unicast scheduling due to separate scheduling for each terminal device, while multicast scheduling limits data diversity as all users transmit the same data, failing to meet individual user needs.
Innovation Solution
A terminal scheduling method that allows multiple terminals to be scheduled using a single piece of control information, where each terminal determines its unique time-frequency resource from a set of indicated resources, enabling differentiated data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If unicast scheduling is used to separately schedule resources for each terminal device, then each terminal can transmit different data, but the downlink control signaling overhead increases significantly
Solution Approach 1:
The patent merges multiple terminal schedules into a single group common grant, where one downlink control information (DCI) message schedules multiple terminals simultaneously. Each terminal determines its specific time-frequency resources from the group common grant based on its terminal identity, enabling different data transmission while using shared control signaling.
2Quantity of substance
If multicast scheduling is used to share one control signaling for multiple terminal devices, then control signaling overhead is reduced, but all users can only transmit the same data
Solution Approach 1:
The patent segments the group common grant into multiple terminal-specific resource indications. Each terminal extracts its designated time-frequency resources from the shared grant based on terminal identity mapping, allowing individual data transmission while maintaining control signaling efficiency.
3Adaptability or versatility
If separate scheduling control signaling is sent for each user in unicast scheduling, then individual user needs are met, but resource overhead increases
Solution Approach 1:
The patent makes the group common grant universal by enabling it to serve multiple terminals simultaneously. The single DCI message functions as a multi-terminal schedule, with each terminal identifying its specific resources through terminal identity-based mapping, thereby improving resource utilization while maintaining user-specific scheduling capability.
Data Source
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AI summary
Embodiments of the present application provide a terminal scheduling method, a device, and a storage medium, including: a terminal receives control information sent by a scheduling device, the control information including multiple pieces of time-frequency resource information; the terminal determines a time-frequency resource from multiple time-frequency resources indicated by the multiple pieces of time-frequency resource information as a transmission resource of the terminal, and sends or receives data according to the transmission resource. Where multiple time-frequency resources indicated by the control information can be used by multiple terminals, so that the scheduling device is able to schedule multiple terminals through a piece of control information, thus saving the overheads of sending control signaling and enabling different transmission resources to be scheduled for different terminals through a control message.