Uplink Control Multiplexing on Shared Channels for 5G Scheduling
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently transmitting control and data channels, particularly in 5G networks, due to varying service types with different requirements such as eMBB, mMTC, and URLLC, which demand optimized resource allocation and scheduling to ensure low latency and high reliability.
Innovation Solution
A method and apparatus for efficiently transmitting control and data channels by determining channel types based on priority, configuring HARQ-ACK codebooks, and optimizing resource allocation through multiplexing and piggybacking control information on data channels, considering overlapping time resources and service types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control information is transmitted separately on dedicated control channels, then reliability of control signaling is improved, but resource allocation complexity and system overhead increase
Solution Approach 1:
The patent combines control information and data information into a single uplink shared channel transmission. Control information is multiplexed with data on the same time-frequency resources, eliminating the need for separate dedicated control channels. This merging approach maintains control signaling reliability while reducing resource allocation complexity and system overhead.
Solution Approach 2:
The uplink shared channel is designed to serve dual purposes: transmitting both control information and data information. This multi-functional approach allows the same channel structure and resources to handle different types of information, simplifying the overall resource allocation framework while ensuring reliable control signaling through appropriate multiplexing techniques.
2Productivity
If control information is multiplexed on data channels, then resource allocation efficiency is improved, but control information transmission reliability may deteriorate
Solution Approach 1:
The patent segments control information and data information into different code domains within the uplink shared channel. By using separate orthogonal codes or spreading sequences for control and data portions, the system achieves efficient resource utilization while maintaining control information reliability through code-domain isolation that prevents interference.
Solution Approach 2:
The patent introduces orthogonal codes or spreading sequences as intermediaries between control information and data information. These codes act as mediators that allow both types of information to share the same physical channel resources while maintaining distinct and reliable transmission paths, thus achieving both efficiency and reliability.
3Adaptability or versatility
If different service types (eMBB, mMTC, URLLC) are supported with optimized resource allocation, then system adaptability is improved, but scheduling complexity increases
Solution Approach 1:
The patent applies local quality by allocating different code resources, spreading sequences, or multiplexing parameters to different service types (eMBB, mMTC, URLLC) based on their specific requirements. Each service type receives optimized local resource characteristics while sharing the same overall channel structure, enabling service adaptability without proportionally increasing overall scheduling complexity.
Data Source
AI summary
The present disclosure provides a method, performed by a terminal, of transmitting uplink control information, the method including: receiving configuration information about a channel type through which at least one piece of uplink control information is to be transmitted; and transmitting at least one piece of uplink control information through at least one channel, based on a priority of the at least one piece of uplink control information and the received configuration information.