Data Transmission Block Segmentation Across Time Slots
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Solution Overview
Problem
Current wireless communication systems face challenges in meeting the high reliability and low latency requirements of services like URLLC and eURLLC due to limitations in resource scheduling, particularly when available time-domain resources in a slot are insufficient for burst transmissions.
Innovation Solution
The proposed solution involves dividing a target transmission block into a first transmission sub-block and a second transmission sub-block when the available time-domain resource in a target time slot cannot satisfy burst transmission. The first sub-block is sent in the available time-domain resource of the target time slot, and the second sub-block is sent in the next time slot, allowing for continuous symbol transmission without waiting for the next slot with sufficient resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If transmission waits for the next slot with sufficient symbols, then resource availability is improved, but transmission latency increases
Solution Approach 1:
The transmission block is divided into multiple segments that can be transmitted across different slots. The first segment is transmitted in the current slot using available symbols, while remaining segments are transmitted in subsequent slots, eliminating the need to wait for a slot with sufficient continuous symbols.
Solution Approach 2:
The system pre-configures multiple transmission opportunities across different slots before transmission begins. Resource allocation messages are sent in advance to indicate available time-domain resources in multiple slots, allowing the terminal to immediately transmit available segments without waiting for suitable conditions.
2Quantity of substance
If transmission waits for sufficient continuous symbols in next slot, then resource sufficiency is improved, but waiting latency increases
Solution Approach 1:
The transmission block is divided into multiple segments that can be transmitted across different slots. The first segment is transmitted in the current slot using available symbols, while remaining segments are transmitted in subsequent slots, eliminating the need to wait for a slot with sufficient continuous symbols.
Solution Approach 2:
The transmission process maintains continuity by immediately transmitting available segments in the current slot rather than pausing to wait for suitable conditions. This keeps the communication channel actively utilized and prevents idle waiting periods.
3Loss of time
If transmission uses available resources in current slot, then transmission latency is reduced, but resource efficiency worsens when resources are insufficient
Solution Approach 1:
The transmission block is divided into multiple segments that can be transmitted across different slots. The first segment is transmitted in the current slot using available symbols, while remaining segments are transmitted in subsequent slots, eliminating the need to wait for a slot with sufficient continuous symbols.
Solution Approach 2:
The network-side device sends resource allocation messages that provide feedback about available time-domain resources in multiple slots. This feedback mechanism allows the terminal to adapt its transmission strategy based on actual resource availability, ensuring reliable delivery by selecting appropriate transmission opportunities.
Data Source
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AI summary
The present invention relates to a data transmission method and device. The method includes: when the target length of a time-domain resource required by a target transmission block is greater than a first length of an available time-domain resource of a target time slot, determining the size of a first sub transmission block transmitted on the available time-domain resource of the target time slot; dividing the target transmission block into a first sub transmission block and a second sub transmission block according to the size of the first sub transmission block, wherein a second length of a time-domain resource required by a second sub transmission block is equal to the difference between the target length and the first length; according to the second length of the time-domain resource required by the second sub transmission block, determining a first time-domain resource configured to transmit the second sub transmission block in the next time slot after the target time slot; and sending a first resource allocation message to a terminal. The present technical solution can reduce the waiting latency, reduce transmission delay, ensure high reliability and low delay of services, and improve service quality.