Dynamic HARQ Mode Selection for Service-Specific Data Transmission
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Solution Overview
Problem
Current data transmission methods in communication technologies lack flexibility as they use a hybrid automatic repeat request (HARQ) mode for all services, leading to increased transmission latency and inability to adapt to different service requirements.
Innovation Solution
A data transmission method that allows network devices to send indication information to terminal devices, enabling or disabling the HARQ function or using specific HARQ modes based on service requirements, allowing for multiple transmission modes to be employed, such as enabling or disabling the HARQ function or using different HARQ modes, to match the needs of various services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If HARQ mode is used for all services, then reliability of data transmission is improved, but transmission latency increases and flexibility is reduced
Solution Approach 1:
The patent applies dynamics by making the transmission mode adjustable and service-specific. The network device can dynamically select different transmission modes (HARQ enabled, HARQ disabled, or specific HARQ modes) based on service requirements, transforming the static all-or-nothing HARQ approach into a flexible, adaptive system that optimizes between reliability and latency for each service type
Solution Approach 2:
The patent changes the parameter of transmission mode configuration from a fixed state to a variable state. By introducing indication information that specifies different transmission modes (enabling/disabling HARQ or selecting specific HARQ modes), the system can adjust transmission parameters according to service characteristics, allowing high-reliability services to use HARQ while low-latency services can use HARQ-disabled mode
2Reliability
If HARQ mode is used for all services, then reliability of data transmission is improved, but flexibility of data transmission is reduced
Solution Approach 1:
The patent segments the transmission mode configuration by service type. Instead of applying a uniform HARQ configuration to all services, the system divides services into different categories (e.g., high-reliability services, low-latency services) and assigns appropriate transmission modes to each segment, enabling tailored optimization for different service requirements
Solution Approach 2:
The patent introduces dynamic adaptability through indication information that allows the network device to specify different transmission modes for different services. This transforms the static, one-size-fits-all HARQ approach into a dynamic system that can adapt transmission parameters to match specific service characteristics, thereby improving flexibility while maintaining reliability where needed
Data Source
AI summary
Embodiments of this application provide a data transmission method and a communication apparatus. The method includes: A network device sends indication information to a terminal device, where the indication information is used to indicate a first transmission mode, and the first transmission mode includes: enabling a hybrid automatic repeat request function, disabling the hybrid automatic repeat request function, or at least one hybrid automatic repeat request mode. Therefore, after receiving the indication information sent by the network device, the terminal device determines the first transmission mode based on the indication information, and performs data transmission in the first transmission mode, to perform data transmission based on requirements of different services. In this way, flexibility of the data transmission is improved.