UE Frequency Resource Scheduling via Bandwidth Part Segmentation
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Solution Overview
Problem
In 5G communication systems, user equipment (UE) may not support the entire system bandwidth, making it challenging to determine appropriate uplink and downlink resource allocations.
Innovation Solution
A resource scheduling method and apparatus that allows UE to determine resource allocation ways in different search spaces within Downlink Control Information (DCI), including blind detection for Physical Downlink Control Channel (PDCCH)/Enhanced Physical Downlink Control Channel (EPDCCH), to allocate bandwidth and location of frequency resources, enabling the determination of uplink and downlink resources even when the UE cannot support the entire system bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the UE attempts to detect resources across the entire system bandwidth, then the resource allocation coverage is improved, but the detection complexity and processing burden increase significantly
Solution Approach 1:
The patent divides the system bandwidth into multiple bandwidth parts (BWPs), each with its own resource allocation parameters. The UE is configured with specific BWPs through higher layer signaling, allowing it to perform blind detection only within these segmented frequency ranges rather than across the entire system bandwidth. This segmentation reduces detection complexity while maintaining adequate resource allocation coverage.
Solution Approach 2:
The patent applies different resource allocation parameters (such as resource block group sizes, allocation modes, and frequency offsets) to different bandwidth parts. Each BWP can have locally optimized parameters tailored to specific service requirements or UE capabilities, allowing the system to maintain high resource allocation efficiency in each local frequency region without requiring the UE to process the entire system bandwidth.
2Adaptability or versatility
If the UE is configured with multiple bandwidth parts and performs blind detection in each, then the resource allocation flexibility is improved, but the detection time and processing load increase
Solution Approach 1:
The patent performs preliminary configuration of bandwidth parts and their associated resource allocation parameters through higher layer signaling (RRC configuration) before actual data transmission. This preliminary action establishes the detection parameters in advance, so that during actual blind detection, the UE only needs to search within pre-defined parameter ranges rather than determining all parameters in real-time, significantly reducing detection time while maintaining flexibility.
Solution Approach 2:
The patent enables dynamic switching between different bandwidth parts and their associated resource allocation modes based on service requirements and UE capabilities. The system can activate or deactivate specific BWPs dynamically, allowing the UE to focus detection efforts on active BWPs only, thereby reducing overall detection time while maintaining adaptability to different service scenarios.
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure provides a resource scheduling method, which includes: determining, by a UE, a resource allocation indicating way in DCI of a first type search space and a resource allocation indicating way in DCI of a second type search space, performing, by the UE, blind detection for PDCCH/EPDCCH on the bandwidth and the location of all the frequency resources available for the UE frequency resource allocation in the corresponding resource allocation indicating way according to the allocation unit of the UE frequency resource in the corresponding resource allocation indicating way, determining a bandwidth and a location of an uplink resource and/or a downlink resource actually allocated for the UE.