Communications Device Pre-emption Monitoring Schedule
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Solution Overview
Problem
Current wireless communications networks face challenges in efficiently handling uplink data transmissions due to pre-emption, where communications resources allocated for one device are taken over by another, particularly in scenarios requiring low latency and high reliability, such as URLLC services, leading to complexity and potential interference.
Innovation Solution
A communications device with a controller that determines the optimal schedule for monitoring pre-emption indications based on the time-divided structure of the wireless access interface, reducing redundant monitoring efforts and adapting transmission to avoid resource overlap with other devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If communications resources are allocated for uplink data transmission, then data transmission efficiency is improved, but the resources may be pre-empted by other transmissions causing interference and reducing reliability
Solution Approach 1:
The communications device determines a monitoring schedule for pre-emption indications before actual data transmission occurs. This preliminary scheduling of monitoring activities allows the device to proactively detect potential resource pre-emption and adapt its transmission accordingly, resolving the contradiction between maintaining transmission efficiency and ensuring reliability in shared wireless resources
Solution Approach 2:
The device continuously monitors for pre-emption indications from the network and uses this feedback information to adapt its uplink transmission. The monitoring schedule provides structured feedback opportunities, allowing the device to respond to real-time resource allocation changes while maintaining efficient use of allocated resources, thus balancing productivity and reliability
2Reliability
If the communications device monitors for pre-emption indications frequently, then transmission reliability is improved, but device complexity and processing requirements increase
Solution Approach 1:
The monitoring schedule is determined in advance based on allocated communications resources, defining specific monitoring occasions and time windows. This preliminary structuring of monitoring activities eliminates the need for continuous or overly frequent monitoring, reducing device complexity while maintaining sufficient reliability through strategically timed checks
Solution Approach 2:
Instead of monitoring at every possible opportunity or continuously, the device performs monitoring at selected partial occasions defined by the schedule. This partial monitoring approach is sufficient to detect pre-emption events while significantly reducing processing requirements and device complexity compared to exhaustive monitoring
3Object-generated harmful factors
If the communications device adapts transmission to avoid pre-empted resources, then interference is reduced, but transmission latency increases due to additional monitoring and adaptation steps
Solution Approach 1:
The monitoring schedule and resource adaptation strategy are determined before data transmission begins. This preliminary preparation allows the device to quickly respond to pre-emption indications without requiring complex real-time analysis, reducing the time penalty for adaptation while effectively avoiding interference with pre-empted resources
Solution Approach 2:
When a pre-emption indication is detected, the device skips or cancels the affected transmission portions and proceeds with remaining valid transmissions. This rushing through of the adaptation process, based on pre-determined schedules and straightforward detection logic, minimizes the time loss while still achieving effective interference avoidance
4Productivity
If long scheduling time is used for high throughput transmission, then data transmission efficiency is improved, but the transmission becomes more vulnerable to pre-emption
Solution Approach 1:
The monitoring schedule divides the long transmission period into multiple monitoring occasions and time windows. This segmentation allows the device to detect pre-emption indications at structured intervals throughout the transmission, enabling adaptive response to resource pre-emption while maintaining the overall efficiency benefits of long scheduling time for high throughput data
Data Source
AI summary
A communications device comprising a transmitter configured to transmit signals on communications resources of a wireless access interface of the wireless communications network, a receiver configured to receive signals transmitted on the communications resources of the wireless access interface, and a controller configured to control the transmitter and the receiver to transmit data representing the signals. The controller is configured to determine communications resources of the wireless access interface to be used to transmit the signals representing the data to be transmitted, and to determine a schedule for monitoring the wireless access interface to receive control information, wherein the monitoring schedule is based on the determined communications resources to be used to transmit the data, and the control information is monitored for a pre-emption indication that at least a portion of the determined communications resources are allocated for transmitting signals by another communications device.