Wireless Data Transmission With Dynamic PDSCH Rate Matching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for an efficient data transmission/reception scheme in network cooperative communication systems, particularly in applying rate matching when data is transmitted/received.
Innovation Solution
A method and apparatus for performing rate matching by receiving and transmitting physical downlink shared channels (PDSCH) while avoiding resources indicated by rate matching resource information, using higher layer signaling to manage resource allocation in a wireless communication system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rate matching is performed to avoid resources indicated by rate matching resource information, then communication reliability is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent implements dynamic rate matching by allowing the terminal to adaptively adjust resource allocation based on received rate matching resource information. The system dynamically determines which resources to avoid for each PDSCH reception, enabling flexible optimization between reliability and resource utilization rather than using fixed avoidance patterns.
Solution Approach 2:
The patent changes the parameter of resource allocation by introducing rate matching resource information that specifies which resources should be avoided. This parameter change allows the system to optimize PDSCH reception by selecting appropriate resources based on current channel conditions and network requirements, resolving the contradiction between avoiding unreliable resources and maintaining efficient utilization.
2Adaptability or versatility
If multiple PDSCHs are received with different rate matching resource information, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent segments the resource information by introducing separate rate matching resource information for different PDSCHs. Each PDSCH can have its own dedicated rate matching resource information, allowing independent optimization for each transmission while maintaining manageable complexity through structured information organization.
Solution Approach 2:
The patent applies preliminary action by providing rate matching resource information in advance through higher layer signaling before PDSCH reception. This allows the terminal to pre-configure its resource allocation strategy, reducing real-time processing complexity while maintaining high adaptability to different transmission scenarios.
3Measurement precision
If rate matching resource information is transmitted via higher layer signaling, then information accuracy is improved, but transmission time increases
Solution Approach 1:
The patent uses preliminary action by transmitting rate matching resource information through higher layer signaling before actual PDSCH data transmission. This advance notification ensures accurate resource allocation information is available to the terminal, preventing misallocation while the timing is managed to minimize impact on overall transmission efficiency.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure relates to a communication technique for combining an IoT technology with a 5G communication system for supporting a higher data transmission rate than a 4G system, and a system therefor. The present disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail business, security and safety-related services, and the like) on the basis of 5G communication technologies and IoT-related technologies. A method for a terminal in a wireless communication system, according to the present disclosure, comprises the steps of: receiving a control signal; determining, from the control signal, a resource to which data can be mapped and then transmitted/received; and receiving data according to the determined resource for the data.