Control Signaling for Punctured TB Repetition Resources
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Solution Overview
Problem
In communications systems like LTE, when a UE with higher priority requests resources during long-term TB repetition, ensuring the higher priority UE's service and correct data reception for the current UE is challenging due to pre-allocated resources.
Innovation Solution
A base station determines and sends control information to puncture or postpone resources for existing UEs, allowing allocation to higher priority UEs while ensuring correct data reception for both.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If one piece of DCI is used to schedule repeated transmission of one or more TBs for a long period, then resource pre-allocation efficiency is improved, but the ability to allocate resources to higher priority UEs deteriorates
Solution Approach 1:
The patent implements dynamic resource allocation by introducing a second DCI that can override or modify the resource allocation made by the first DCI. This allows the system to transition from a static pre-allocated resource model to a dynamic one where resources can be re-assigned based on changing priority conditions, resolving the contradiction between pre-allocation efficiency and scheduling flexibility
Solution Approach 2:
The patent uses preliminary resource allocation through the first DCI to establish initial resource reservations, then introduces a mechanism for preliminary intervention by the second DCI when higher priority UEs need resources. This two-stage approach maintains the benefits of pre-allocation while providing a pathway for priority-based re-allocation
2Reliability
If resources are re-allocated to higher priority UEs, then service quality for higher priority UEs is improved, but data reception correctness for current UEs deteriorates
Solution Approach 1:
The patent introduces control information (second DCI) as an intermediary mechanism that coordinates resource re-allocation between higher priority UEs and current UEs. This intermediary ensures that resource changes are communicated properly and that data reception correctness is maintained through appropriate control signaling, preventing data corruption during re-allocation
Solution Approach 2:
The patent implements feedback mechanisms where the base station monitors resource usage and priority conditions, then sends appropriate control information to adjust resource allocation. This closed-loop feedback system ensures that re-allocation decisions are made with full information about system state, maintaining both service quality and data correctness
Data Source
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AI summary
Embodiments of this application disclose a data transmission method, a control information sending method, and a device, and relate to the field of communications technologies. If UE with a higher priority exists in TB repeated transmission of current UE, not only a service of the UE with a higher priority can be ensured, but also it is ensured that the current UE can correctly receive or send data, and data receiving performance of a base station can be correspondingly ensured. The method may include: determining, by the communications device, a first resource used for receiving or sending data; receiving control information, where the control information includes first indication information that can be used to indicate that a resource is punctured or postponed, and the first indication information is used to indicate that a second resource is punctured or postponed; and determining, by the communications device, a third resource based on the first indication information and the first resource, and receiving or sending the data by using the third resource.