Time-Frequency Uplink Resource Indication for Preemption
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies and low reliability in resource allocation for high-priority traffic like URLLC due to random and low-probability occurrences, leading to wasted resources and poor indication of preempted time and frequency domain resources.
Innovation Solution
A refined resource indication method that sends first resource indication information to user terminals, indicating time and frequency domain patterns, units, and granularities to accurately signal preempted resources, using physical and higher-layer signaling to optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If transmission resources are allocated to high-priority traffic as soon as possible, then transmission speed and responsiveness are improved, but resource waste increases due to preemption of previously allocated resources
Solution Approach 1:
The system performs preliminary resource allocation for regular traffic, then uses interruption indication information to notify terminals when preemption occurs. This allows resources to be pre-allocated efficiently while enabling quick reassignment to high-priority traffic when needed, reducing both allocation delay and resource waste.
Solution Approach 2:
The system implements a feedback mechanism where the network side sends interruption indication information to terminals about preempted resources. Terminals use this feedback to adjust their transmission behavior, avoiding wasted transmissions on preempted resources and enabling efficient resource utilization dynamics.
2Device complexity
If traditional resource indication methods are used, then system complexity is kept low, but indication accuracy and reliability deteriorate due to inability to accurately notify preempted resources
Solution Approach 1:
The resource indication is segmented into specific interruption indication information that identifies particular preempted time-frequency resources. Instead of general resource allocation, the system divides the indication into specific preemption notifications, achieving high accuracy while maintaining manageable complexity through targeted signaling.
Solution Approach 2:
The system changes the parameter of resource indication from general allocation signals to specific interruption indicators that convey precise preemption information. This parameter change enables accurate notification of preempted resources using efficient signaling mechanisms that balance detail with complexity.
Data Source
AI summary
A resource indication method includes: sending first resource indication information to a user terminal, where the first resource indication information is used for indicating an uplink data transmission mechanism to the user terminal; and receiving uplink data sent by the user terminal, where the first resource indication information includes time domain unit information and frequency domain resource information used for indicating a time domain unit in a reference uplink resource; the reference uplink resource includes at least one time domain unit, and in response to the at least one time domain unit includes a plurality of time domain units, the plurality of time domain units do not overlap each other; and each of the at least one time domain unit includes at least one time domain symbol; the frequency domain resource information is used for indicating an occupied frequency domain unit in each time domain unit.