PDSCH Resource Allocation Across Different UE Bandwidth Parts
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately and efficiently transmitting and receiving signals, particularly in diverse communication scenarios involving multiple access systems and varying bandwidths.
Innovation Solution
The proposed method enhances signal transmission and reception by optimizing the configuration and management of bandwidth parts (BWPs) and control information in wireless communication systems, utilizing techniques such as frequency hopping and dynamic resource allocation, to improve accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frequency hopping across narrower BWPs is implemented, then resource allocation flexibility and interference mitigation are improved, but system complexity and overhead increase
Solution Approach 1:
The patent divides the available bandwidth into multiple narrower bandwidth parts (BWPs) and implements frequency hopping across these segmented frequency resources. This segmentation allows the system to allocate resources flexibly across different frequency ranges while managing complexity through structured BWP configurations with defined parameters like bandwidth, location, and hopping patterns.
Solution Approach 2:
The patent introduces dynamic frequency hopping mechanisms where the frequency location and bandwidth of BWPs can change over time according to predefined patterns or network instructions. This dynamic allocation enables the system to adapt to varying channel conditions and traffic requirements, improving resource utilization while maintaining manageable complexity through standardized hopping procedures.
2Reliability
If multiple narrower BWPs are configured for frequency hopping, then interference mitigation and resource utilization are improved, but control signaling overhead increases
Solution Approach 1:
The patent creates a universal BWP configuration framework that can serve multiple functions: resource allocation, interference mitigation, and mobility management. By defining standardized BWP parameters and hopping patterns that can be reused across different scenarios, the system achieves interference mitigation through frequency diversity while reducing overhead through standardized, multi-purpose configuration structures.
3Productivity
If dynamic resource allocation is implemented, then spectral efficiency is improved, but processing complexity and latency increase
Solution Approach 1:
The patent implements preliminary configuration of BWP parameters, hopping patterns, and resource allocation rules before actual data transmission. By pre-defining these resources and allocation mechanisms, the system enables dynamic resource allocation with reduced processing latency during actual transmission, as the complex allocation decisions have already been prepared in advance.
Data Source
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Figure 3
Figure 4(a)~4(b)
AI summary
Abstract: According to an embodiment, a user equipment (UE) receives downlink control information (DCI) through a physical downlink control channel (PDCCH), determines a downlink resource allocated to the UE based on a frequency domain resource allocation (FDRA) field included in the DCI, and receives a physical downlink shared channel (PDSCH) in the downlink resource, and in this case, based on that a first bandwidth of the UE supported for the PDCCH is different from a second bandwidth of the UE supported for the PDSCH, the UE determines the downlink resource allocated through the FDRA field based on the second bandwidth other than the first bandwidth.