5G Control and Data Slot Scheduling for Multi-Service Transmission
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Solution Overview
Problem
Existing communication systems face challenges in efficiently providing multiple services to a user within the same time interval, particularly in 5G networks, due to interference and resource management issues between different types of services such as eMBB, mMTC, and URLLC.
Innovation Solution
A method and device for efficiently transmitting uplink control information and data by indicating time intervals for scheduling through downlink and uplink control channels, minimizing additional bits for control channels, and optimizing frequency-time and space resources to support simultaneous service transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple services are provided to a user in the same time interval, then service diversity and user satisfaction are improved, but interference between services and resource management complexity increase
Solution Approach 1:
The transmission slot is segmented into multiple parts: a first part for control information and a second part for data. This segmentation allows different services to be allocated to different parts or to specific resources within parts, enabling service diversity while simplifying resource management through structured organization.
Solution Approach 2:
The patent introduces a frequency dimension by dividing frequency resources into first and second frequency resources within the time-frequency grid. This additional dimensional organization allows multiple services to coexist in the same time interval by allocating them to different frequency resources, thereby improving service diversity while maintaining manageable resource allocation through multi-dimensional resource grid organization.
2Productivity
If control information and data are transmitted in the same uplink transmission slot, then transmission efficiency is improved, but control information may interfere with data transmission
Solution Approach 1:
The uplink transmission slot is segmented into a first part for control information and a second part for data transmission. This temporal segmentation within the same slot allows both control information and data to be transmitted simultaneously without mutual interference, thereby maintaining high transmission efficiency while eliminating interference issues.
Solution Approach 2:
The patent utilizes frequency division by allocating different frequency resources for control information and data within the same time slot. This multi-dimensional resource allocation (time-frequency grid) enables simultaneous transmission of control information and data on different frequency resources, achieving both high transmission efficiency and interference avoidance.
3Measurement precision
If additional bits are added to control channels for indicating time intervals, then scheduling precision is improved, but control channel overhead increases
Solution Approach 1:
The patent applies local quality by providing detailed time interval indications (such as start symbol and end symbol) only when necessary for specific service requirements, while using more general indications for other cases. This selective precision approach maintains scheduling precision where needed while minimizing control channel overhead in other scenarios.
Solution Approach 2:
The control channel dynamically adjusts the level of detail in time interval indications based on service requirements and channel conditions. When high precision is needed for specific services, additional bits are used; when general scheduling suffices, fewer bits are transmitted. This dynamic adaptation maintains necessary scheduling precision while optimizing control channel overhead.
Data Source
AI summary
The present disclosure relates to a communication technique for joining an IoT technology with a 5G communication system for supporting a higher data transfer rate than a 4G system, and a system thereof. The disclosure may be applied to intelligent services (for example, a smart home, a smart building, a smart city, a smart car or a connected car, a health care, a digital education, retailing, security and safe-related service, etc.) on the basis of a 5G communication technology and an IoT related technology. The present disclosure relates to a wireless communication system, and to a method and an apparatus for smoothly providing a service in a communication system. More particularly, the present disclosure relates to a method and an apparatus for transmitting and receiving downlink and uplink control information within a communication system.