HARQ-ACK Reporting Mode Multiplexing for Low-Latency Uplinks
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently multiplexing and transmitting various reporting modes of Hybrid Automatic Repeat Request-Acknowledgment (HARQ-ACK) information, including NACK only-based and ACK/NACK-based HARQ-ACK information, as well as scheduling requests, to meet the demands of high data traffic, increased transmission rates, and low latency requirements in next-generation mobile communication systems.
Innovation Solution
A method and apparatus for multiplexing and transmitting or receiving HARQ-ACK information by combining different reporting modes, such as NACK only-based and ACK/NACK-based HARQ-ACK information, and scheduling requests, through a sequence-based approach in wireless communication systems, involving terminals and base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple HARQ-ACK reporting modes are transmitted separately, then each mode can be processed independently, but the transmission time and resource consumption increase
Solution Approach 1:
The patent combines multiple HARQ-ACK reporting modes (NACK only-based and ACK/NACK-based) into a single multiplexed transmission. The terminal transmits both types of HARQ-ACK information together in one uplink signal, allowing the base station to distinguish between different reporting modes through predefined mapping relationships, thereby reducing transmission time and resource consumption while maintaining processing reliability
2Reliability
If multiple HARQ-ACK reporting modes are transmitted separately, then each mode can be processed independently, but the resource consumption increases
Solution Approach 1:
The patent merges multiple HARQ-ACK reporting modes into a single transmission resource. By establishing a mapping relationship between different reporting modes and encoded signal patterns, the system transmits both NACK only-based and ACK/NACK-based HARQ-ACK information using the same uplink resource, significantly reducing the quantity of resources required compared to separate transmissions
3Loss of time
If HARQ-ACK information is transmitted with high priority, then low latency is achieved, but energy consumption increases
Solution Approach 1:
The patent implements dynamic transmission strategies where the terminal determines the optimal transmission timing and resource allocation based on current system conditions. The base station dynamically configures the mapping relationships and transmission parameters, allowing the system to adjust between low-latency high-priority transmission and energy-efficient transmission modes depending on traffic conditions and user requirements
Data Source
AI summary
A method and an apparatus for transmitting or receiving hybrid automatic repeat request-acknowledgment (HARQ-ACK) information in a wireless communication system are disclosed. A method of transmitting hybrid automatic repeat request-acknowledgment (HARQ-ACK) information by a terminal in a wireless communication system according to an embodiment of the present disclosure may comprise: receiving, from a network, a first physical downlink shared channel (PDSCH) based on a first HARQ-ACK reporting mode; receiving, from the network, a second PDSCH based on a second HARQ-ACK reporting mode; and transmitting, to the network, the HARQ-ACK information based on a sequence in which a first bit corresponds to the first HARQ-ACK reporting mode and a second bit corresponds to the second HARQ-ACK reporting mode.