Dynamic Time-Frequency Resource Allocation in 5G NR
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Solution Overview
Problem
Current communication systems, particularly in new radio (NR) and Long Term Evolution (LTE) networks, face challenges in efficiently indicating time-frequency resources used for Physical Downlink Shared Channel (PDSCH) transmission, leading to resource wastage and inefficient scheduling.
Innovation Solution
A method and device that determine time-frequency resources by configuring and signaling resource sets, allowing dynamic indication of multiplexing and rate matching for PDSCH and PUSCH transmissions, enabling effective resource allocation and utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If CORESET resources are semi-statically configured for PDCCH transmission, then control channel scheduling is enabled, but idle resources remain wasted when no control transmission is needed
Solution Approach 1:
The patent introduces dynamic indication information that allows the network to dynamically adjust the usage status of CORESET resources. The base station can indicate through downlink control information whether certain CORESET resources should be used for PDCCH transmission or multiplexed for PDSCH transmission, transforming static configuration into dynamic resource allocation based on actual transmission needs
Solution Approach 2:
The patent changes the parameter of resource usage status from fixed to variable. By introducing indication information that can change the usage state of CORESET resources between control transmission mode and data transmission mode, the system adapts resource allocation to actual needs, preventing waste while maintaining scheduling flexibility
2Reliability
If PDCCH domain resources are completely separated from PDSCH domain resources, then control channel transmission is ensured, but resource utilization efficiency decreases
Solution Approach 1:
The patent merges the previously separate PDCCH and PDSCH resource domains by enabling multiplexing of CORESET resources for both control and data transmission. The base station can indicate through dynamic signaling whether CORESET resources should be dedicated to PDCCH or shared with PDSCH, combining control and data transmission in the same time-frequency resources when appropriate
Solution Approach 2:
The patent makes CORESET resources universal by enabling them to serve multiple functions: they can be used for PDCCH transmission when control signals are needed, and for PDSCH transmission when data transmission is required and control resources are available elsewhere. This multi-functionality increases resource utilization efficiency while maintaining control channel reliability through proper scheduling
3Adaptability or versatility
If dynamic signaling is used to indicate resource multiplexing, then resource allocation flexibility is improved, but signaling complexity increases
Solution Approach 1:
The patent segments the resource indication information into manageable components. Instead of requiring complex full-resource-description signaling, the base station uses indication information that can be conveyed through existing downlink control information structures, breaking down the resource allocation indication into simpler, more manageable signaling units that fit within current system frameworks
Data Source
AI summary
Provided are a method and a device for determining time-frequency resources. The method comprises: determining, by a first communication node, at least one piece of the following information about a first resource set: time-frequency resources of a second resource set contained in the first resource set, configuration information of the second resource set, time-frequency resource configuration information of the first resource set, and a dynamic signaling indication used for indicating whether the first resource set is multiplexed to a PDSCH transmission or a PUSCH transmission or whether the PDSCH transmission or the PUSCH transmission needs to implement rate matching; and after the above-mentioned information is determined, transmitting the information to a second communication node.