5G Control and Data Multiplexing for Mixed-Service Reliability
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Solution Overview
Problem
Existing communication systems struggle to efficiently integrate and manage multiple services such as eMBB, mMTC, and URLLC within the same time interval, particularly in 5G systems, due to differing latency, reliability, and bandwidth requirements, leading to inefficiencies in resource allocation and compatibility with future technologies.
Innovation Solution
A method and device for transmitting and receiving control and data information that dynamically allocates time-frequency resources to accommodate various services, ensuring forward compatibility and efficient multiplexing of eMBB, mMTC, and URLLC, using techniques like time-division multiplexing, frequency-division multiplexing, and spatial division multiplexing within a unified framework.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If control information and data information are transmitted using the same physical channel, then resource utilization is improved, but reliability deteriorates due to uplink-downlink interference
Solution Approach 1:
The patent segments the physical uplink shared channel into multiple resource blocks and assigns different cyclic shift values to different users or channels. This segmentation allows control information and data information to be transmitted simultaneously on the same physical channel while maintaining distinguishability and reducing interference, thus resolving the contradiction between resource utilization and transmission reliability.
Solution Approach 2:
The patent applies different local qualities (cyclic shift values) to different portions of the transmitted signal. By assigning specific cyclic shift values to control information versus data information, the system enables differentiated treatment of different signal types on the same physical channel, improving both resource utilization and reliability through localized optimization.
2Reliability
If cyclic shift values are dynamically adjusted for different users, then interference management is improved, but system complexity increases
Solution Approach 1:
The patent changes the cyclic shift value parameter dynamically based on user requirements and channel conditions. By adjusting this single parameter, the system achieves effective interference management without requiring complex structural changes, thus improving reliability while keeping system complexity relatively low.
Solution Approach 2:
The cyclic shift mechanism serves multiple functions simultaneously: it separates control information from data information, manages interference between users, and enables dynamic resource allocation. This multi-functionality reduces the need for separate mechanisms, thereby managing complexity while improving interference management.
3Productivity
If multiple users share the same time-frequency resources, then spectral efficiency is improved, but uplink-downlink interference increases
Solution Approach 1:
The cyclic shift value acts as an intermediary that separates uplink and downlink signals in the code domain. By introducing this intermediary parameter, multiple users can share the same time-frequency resources while the cyclic shift differentiation reduces harmful interference between uplink and downlink transmissions, thus improving spectral efficiency without excessively increasing interference.
Data Source
Figure 1A
Figure 1B
Figure 1C(a)~1C(b)
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.