PDSCH Resource Allocation Under Control Set Bandwidth Limits
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Solution Overview
Problem
In the New Radio (NR) system, when the bandwidth of a control resource set exceeds the system bandwidth, the allocation of resources for the physical downlink shared channel (PDSCH) is not adequately addressed, leading to inefficiencies in resource utilization.
Innovation Solution
A method and apparatus for determining a resource allocation range for PDSCH based on system bandwidth, resource range of the control resource set, and available resources, using indication information from the master information block (MIB) and resource allocation fields, to optimize resource allocation and improve transmission reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the control resource set bandwidth is increased to accommodate all transmission resources, then the resource allocation capability is improved, but the system bandwidth constraint is violated
Solution Approach 1:
The patent segments the control resource set into two parts: a first resource range within the system bandwidth and a second resource range outside the system bandwidth. This segmentation allows the control resource set to conceptually include more resources while practically utilizing only those within the system bandwidth for PDSCH allocation, resolving the contradiction between expanded resource allocation capability and system bandwidth constraints.
Solution Approach 2:
The patent introduces an intermediary mechanism where the network device determines a resource allocation range based on the intersection of the control resource set resources and system bandwidth. This intermediary approach allows the system to acknowledge larger control resource sets while enforcing the system bandwidth limit through the resource allocation range determination process.
2Productivity
If the PDSCH resource allocation range is expanded beyond system bandwidth, then the transmission capacity is improved, but the terminal reception capability is compromised
Solution Approach 1:
The patent applies partial action by limiting the PDSCH resource allocation range to only the portion of control resource set resources that fall within the system bandwidth, even though the control resource set may conceptually include more resources. This ensures the terminal can reliably receive all allocated PDSCH resources while maintaining the benefit of expanded transmission capacity through the larger control resource set definition.
3Adaptability or versatility
If the resource allocation field in PDCCH indicates resources outside system bandwidth, then the allocation flexibility is improved, but the implementation complexity increases
Solution Approach 1:
The patent implements feedback through the resource allocation field in the PDCCH, which indicates the resource allocation range for PDSCH. The terminal uses this feedback information to determine the actual resources to receive, ensuring alignment between the allocated resources and the terminal's reception capability within the system bandwidth, thereby managing implementation complexity while maintaining flexibility.
Data Source
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AI summary
The present disclosure relates to the technical field of communications, and relates a resource allocation method and apparatus, and a storage medium, for use in determining the resource allocation range of a physical downlink shared channel (PDSCH) and improving the reliability of PDSCH transmission. The method comprises: in response to determining that a bandwidth configured by a network device to a control resource set is greater than a system bandwidth, determining the resource allocation range of a PDSCH; and performing resource allocation of the PDSCH on the basis of the resource allocation range.