5G DCI Priority Signaling for Resource Preemption Control
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Solution Overview
Problem
Existing 5G communication systems face challenges in efficiently providing various services with priority-based data and control information transmission, particularly in scenarios where different services require different latency, reliability, and resource allocation.
Innovation Solution
A method and device for prioritizing data and control information transmission based on service requirements, using hybrid automatic repeat request (HARQ) schemes and dynamic resource allocation, with priority-based DCI formats and preemption mechanisms to manage resource collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dynamic resource allocation and preemption mechanisms are implemented for priority-based service delivery, then service reliability and latency performance are improved, but system complexity and device complexity increase
Solution Approach 1:
The patent segments the system into multiple priority levels (first priority and second priority services) with dedicated resource pools and control mechanisms for each level. This segmentation allows independent management of different service types, improving reliability through targeted resource allocation while keeping complexity manageable by handling each priority level separately through specific DCI formats and preemption procedures.
Solution Approach 2:
The patent implements dynamic resource allocation where resources can be preempted and reallocated based on service priority and channel conditions. The system dynamically adjusts resource assignment through DCI formats that carry priority information and preemption indicators, allowing the network to adapt to changing service requirements and maintain high reliability without static rigid allocation.
2Adaptability or versatility
If priority-based control information and data transmission is implemented, then service differentiation and quality of service are improved, but control overhead and signaling complexity increase
Solution Approach 1:
The patent uses universal DCI formats that can carry multiple types of information including priority indicators, preemption indicators, and resource allocation information within a single signaling structure. This multi-functionality allows the system to achieve fine-grained service differentiation while minimizing control overhead by consolidating multiple control functions into unified signaling messages.
Solution Approach 2:
The patent changes the parameter structure of control information by introducing priority fields and preemption indicator bits in DCI formats. These parameter modifications enable the system to convey service differentiation requirements and resource preemption decisions through compact signaling, achieving versatile service support without proportionally increasing control overhead.
3Productivity
If resource preemption and collision management mechanisms are used, then resource utilization efficiency is improved, but processing complexity and latency increase
Solution Approach 1:
The patent implements preliminary action by pre-configuring resource pools for different priority services and establishing preemption rules in advance. When resource collisions occur, the pre-configured priority levels and preemption indicators enable immediate decision-making without complex real-time negotiations, improving resource utilization efficiency while minimizing processing latency through predetermined action protocols.
Data Source
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AI summary
A communication technique for convergence of a 5G communication system for supporting a higher data transmission rate beyond a 4G system with an IoT technology, and a system therefor. The disclosure may be applied to intelligent services based on a 5G communication technology and an IoT-related technology. A method of a terminal of a wireless communication system is provided. The method includes receiving, from a base station, downlink control information (DCI) for scheduling of data transmission/reception, checking priority information related to the DCI, based on the priority information, determining whether to perform data transmission/reception scheduled according to the DCI, and if the data transmission/reception is determined to be performed, performing the data transmission/reception, wherein the priority information is indicated by a priority information field in the DCI, is a value configured by higher layer signaling, or is related to a format of the DCI.