Downlink Pre-Emption Bitmap Monitoring for 5G QoS Multiplexing
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Solution Overview
Problem
Existing 5G radio access networks face challenges in efficiently multiplexing data traffic between services with different Quality of Service (QoS) requirements, such as eMBB, mMTC, and URLLC, due to differing latency and coverage needs, leading to inefficiencies in resource utilization and control overhead.
Innovation Solution
A method for monitoring and transmitting downlink pre-emption indication information, including configuring and receiving bitmap information on time- or frequency-section resources affected by pre-emption, to support dynamic resource sharing and multiplexing between eMBB and URLLC services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If time-section resource assignment is lengthened to improve cell throughput and coverage for eMBB and mMTC services, then resource utilization efficiency improves, but latency increases making it unsuitable for URLLC services
Solution Approach 1:
The patent segments the time-section resources into multiple pre-emption indication opportunities within a single time-section. This allows the system to maintain long time-section assignments for eMBB/mMTC services (improving throughput and coverage) while providing multiple intermediate check points for URLLC services to pre-empt resources if needed (reducing latency). The segmentation enables fine-grained control over resource allocation without requiring shorter overall assignment periods.
2Productivity
If dynamic resource sharing between eMBB and URLLC services is implemented, then resource utilization efficiency improves, but control overhead increases
Solution Approach 1:
The patent applies partial action by providing pre-emption indication opportunities at selective intervals rather than continuously. Multiple pre-emption indication opportunities are provided within a time-section, but not necessarily at every possible resource allocation point. This partial monitoring approach enables dynamic resource sharing between eMBB and URLLC services while keeping control overhead manageable by avoiding excessive signaling at every resource boundary.
Solution Approach 2:
The system dynamically changes the parameter of pre-emption indication frequency and timing based on network conditions and service requirements. The base station can adjust how many pre-emption indication opportunities are provided within a time-section, and can modify the timing and positioning of these opportunities. This parameter flexibility allows the system to optimize resource utilization efficiency while adapting control overhead to actual network needs rather than using a fixed high-overhead approach.
Data Source
AI summary
Provided is a method for monitoring, transmitting, and receiving downlink pre-emption indication information in a next-generation/5G radio access network. The method may include receiving monitoring configuration information for downlink pre-emption indication information from a base station; receiving configuration information on a control resource set (CORESET) for receiving the downlink pre-emption indication information from the base station; configuring reference downlink resources based on the configuration information on a control resource set; and monitoring the downlink pre-emption indication information for the reference downlink resources, wherein the downlink pre-emption indication information includes a bitmap indicating information on at least one of time-section resources and frequency-section resources in which pre-emption has occurred, among reference downlink resources.