5G Uplink Resource Preemption Between eMBB and URLLC
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge of reducing mutual interference between Enhanced Mobile Broadband (eMBB) data and Ultra Reliability Low Latency Communication (URLLC) data during transmission in 5G networks is unresolved, particularly in scenarios where URLLC data has higher priority and requires timely transmission, necessitating the reallocation of resources from eMBB to ensure URLLC data is not affected.
Innovation Solution
A resource control method is implemented where a user equipment (UE) determines overlap between eMBB and URLLC data transmission resources using Preemption Indication (UPI) information, monitoring PDCCH resources to identify overlapping regions, and adjusts eMBB data transmission to avoid interfering with URLLC data by stopping eMBB data in overlapping resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If URLLC data transmission is prioritized by allocating dedicated resources, then transmission reliability and timeliness are improved, but resource utilization efficiency deteriorates due to resource waste when URLLC data does not require the allocated resources
Solution Approach 1:
The base station pre-allocates resources for potential URLLC data transmission and prepares preemption indication information in advance. When URLLC data arrives, the base station can immediately send the preemption indication to notify eMBB UEs to release overlapping resources, ensuring URLLC transmission reliability without permanent resource dedication.
Solution Approach 2:
The patent implements dynamic resource allocation where eMBB UEs can dynamically release their allocated resources upon receiving preemption indication. This allows resources to transition from eMBB usage to URLLC usage based on real-time needs, optimizing both reliability and resource utilization efficiency through flexible, adaptive resource management.
2Loss of time
If eMBB data transmission resources are reduced to accommodate URLLC data, then URLLC transmission timeliness is improved, but eMBB data transmission efficiency deteriorates
Solution Approach 1:
The base station pre-allocates resources for potential URLLC transmission and prepares preemption indication information in advance. This allows immediate resource reallocation when URLLC data arrives, minimizing transmission delay without permanently reducing eMBB resources.
Solution Approach 2:
The patent changes the time-domain and frequency-domain parameters of resource allocation dynamically. When URLLC preemption occurs, the eMBB UE releases specific time-frequency resources temporarily, allowing URLLC to use those resources without permanently reducing eMBB capacity, thus maintaining eMBB transmission efficiency while enabling timely URLLC delivery.
3Loss of energy
If resources are dynamically reallocated from eMBB to URLLC, then resource utilization is improved, but system complexity increases due to resource overlap detection and coordination
Solution Approach 1:
The base station acts as an intermediary that manages resource coordination between eMBB and URLLC transmissions. It detects resource overlaps, generates preemption indication information, and notifies eMBB UEs of resource releases. This centralized mediation simplifies the overall system complexity compared to distributed coordination, as the base station handles all resource management decisions using its global view of resource allocation.
4Reliability
If preemption indication information is sent to notify eMBB UE resource release, then URLLC transmission reliability is improved, but downlink control overhead increases
Solution Approach 1:
The preemption indication information is segmented into specific indication fields that identify which time-frequency resources are preempted. This segmented structure allows the base station to notify eMBB UEs of only the specific resources being released rather than transmitting comprehensive resource allocation information, reducing downlink control overhead while maintaining URLLC transmission reliability.
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present application provides a resource control method, an electronic device, and a computer readable storage medium. The resource control method includes: determining whether a first PUSCH resource overlaps with a time domain range and/or a frequency domain range occupied by UPI information indication range, based on the scheduled first PUSCH resource and the UPI information indication range, wherein, the first PUSCH resource is used to transmit eMBB data, the UPI information indication range indicates the time domain range and/or the frequency domain range to be occupied by a second PUSCH resource, and the second PUSCH resource is used to transmit URLLC data; monitoring a PDCCH resource containing UPI information if the first PUSCH resource overlaps with the time domain range and/or the frequency domain range occupied by the UPI information indication range, and determining whether the first PUSCH resource and the second PUSCH resource indicated by the UPI information overlap, if overlapping, not transmitting the eMBB data in a resource overlapping with the second PUSCH resource. The present application implements effective control for resources, ensures that URLLC data can be transmitted in time, reduces the impact of transmitting URLLC data on transmitting eMBB data, and reduces waste of transmission resources.