5G Data Transmission Subresource Segmentation for URLLC and eMBB Coexistence
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Solution Overview
Problem
In 5G communication systems, the coexistence of eMBB and URLLC services leads to excessive signaling overheads and performance loss due to different latency requirements and resource sharing challenges, particularly in shared time-frequency resources.
Innovation Solution
The method involves determining K subresources within a shared time domain resource, allowing for joint SIC detection of transport blocks or code blocks from both services, reducing signaling overheads and improving detection performance for URLLC while maintaining eMBB service integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple transport block sizes are allocated to eMBB service to enable advanced receiver to receive both eMBB and URLLC data in shared time-frequency resource area, then data reception capability is improved, but signaling overheads increase
Solution Approach 1:
The patent segments the time domain resource into multiple time domain subresources, and segments the transport block into multiple code blocks. This segmentation allows the system to support multiple service types with different latency requirements by dividing resources into manageable units that can be independently scheduled and received, reducing the need for complex signaling while maintaining reception capability.
Solution Approach 2:
The patent introduces a code block level dimension for receiving operations, in addition to the traditional transport block level. By enabling receiving at the code block level rather than only at the transport block level, the system can flexibly handle different service requirements without requiring complex signaling for multiple transport block configurations.
2Productivity
If eMBB and URLLC services share same time-frequency resources, then resource utilization is improved, but mutual interference occurs due to different transmission time intervals
Solution Approach 1:
The patent segments the time domain resource into multiple time domain subresources with different lengths, allowing eMBB and URLLC services to be scheduled in the same time-frequency resource area without mutual interference. The segmentation enables flexible allocation where URLLC can use shorter subresources for low latency requirements while eMBB uses longer subresources for enhanced broadband, achieving both resource utilization and interference avoidance.
Solution Approach 2:
The patent applies different time domain subresource configurations to different services based on their specific requirements. URLLC services receive shorter subresources for low latency, while eMBB services receive longer subresources. This local differentiation of resource characteristics allows multiple services to coexist in the same time-frequency area without interference while maintaining their respective quality requirements.
Data Source
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AI summary
This application provides a data transmission method and apparatus. The method includes: obtaining first information, where the first information is used to indicate a first time domain resource, and the first time domain resource is used to carry a first service; obtaining second information, where the second information is used to indicate that a second time domain resource includes N second subresources, and N is an integer greater than or equal to 1; determining, based on the first time domain resource and the N second subresources, K first subresources included in the first time domain resource, where K is an integer greater than or equal to 1; and determining a quantity of K sub transport blocks included in the first service carried on the first time domain resource, where the K sub transport blocks one-to-one correspond to the K first subresources, and each sub transport block is carried on a corresponding first subresource. When different services share a same resource, technical solutions of this application can ensure that mutual interference is reduced, and excessive signaling overheads are avoided in a system.