5G Resource Location Signaling With Relative Frequency Offsets
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Solution Overview
Problem
In high-frequency wireless communication systems like 5G, the flexible deployment of spectrum and reduced complexity of terminal search in the frequency domain pose challenges in accurately indicating resource locations for bandwidth parts (BWPs), common control resource sets (CORESETs), and physical downlink shared channels (PDSCHs), especially with larger UE raster intervals and diverse bandwidth capabilities.
Innovation Solution
A method for indicating resource locations by a base station to a terminal, using frequency-domain offsets and bandwidths relative to reference points, such as synchronization signal blocks, to precisely define the positions of BWPs, PDSCHs, and common CORESETs, through physical broadcast channels and RRC dedicated signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a larger UE raster interval is used to reduce terminal search complexity, then the search complexity is reduced, but the accuracy of resource location indication deteriorates
Solution Approach 1:
The patent introduces a reference point (such as SS block center frequency or BWP center frequency) as an intermediary to bridge the gap between the UE raster interval and resource location indication. By expressing resource locations relative to this reference point using frequency offsets, the system maintains accurate location indication while allowing larger UE raster intervals for simplified terminal search.
2Productivity
If the physical carrier bandwidth is divided into multiple BWPs to reduce scheduling overhead, then the scheduling overhead is reduced, but the complexity of indicating resource locations deteriorates
Solution Approach 1:
The patent segments the physical carrier bandwidth into multiple BWPs, each with its own center frequency and bandwidth parameters. By defining resource locations relative to BWP center frequencies rather than absolute carrier frequencies, the system reduces indication complexity while maintaining the benefits of BWP segmentation for overhead reduction.
Solution Approach 2:
The patent changes the parameter system from absolute frequency locations to relative frequency offsets from reference points. This parameter transformation allows the system to maintain accurate resource location indication across multiple BWPs while reducing the complexity of the indication mechanism.
3Power
If beamforming is adopted to improve antenna gains, then the antenna gains are improved, but the coverage complexity deteriorates
Solution Approach 1:
The patent performs preliminary beam direction measurement and identification during the initial access procedure. By pre-establishing the relationship between SS blocks and beam directions, the system eliminates the need for continuous beam scanning during normal operation, thereby maintaining high antenna gains while reducing operational complexity.
Data Source
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AI summary
Provided is a method for indicating a resource location. The method includes: sending, by a first-type node, resource location information to a second-type node, the resource location information at least indicates a frequency-domain location of a resource, where the frequency-domain location includes at least one of a frequency-domain location of a first resource or a frequency-domain location of a second resource, and the first resource or the second resource includes at least one of a bandwidth part (BWP), a resource occupied by a physical downlink shared channel (PDSCH), or a common control resource set. Also provided are a device for indicating a resource location, and a method, device, terminal, base station, processor, and storage medium for receiving a resource location.