Uplink Signal Resource Allocation for Licensed and Unlicensed Bands
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting and receiving control information, particularly in aggregating licensed and unlicensed bands for effective resource allocation and signal transmission.
Innovation Solution
A method and apparatus for transmitting uplink signals by aggregating cells on licensed and unlicensed bands, where resource allocation information is used to indicate frequency resources, with tones separated by equal spacing for efficient transmission, allowing for efficient use of available resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If contiguous tones are used for licensed band resource allocation, then frequency resource utilization is improved, but adaptability to unlicensed band requirements deteriorates
Solution Approach 1:
The patent segments the frequency resource allocation method by band type: contiguous tone allocation for licensed bands (LCell) and non-contiguous tone allocation with equal spacing for unlicensed bands (UCell). This segmentation allows each band type to use the allocation method best suited to its characteristics, resolving the contradiction between utilization efficiency and adaptability.
Solution Approach 2:
The patent applies different resource allocation qualities to different bands: contiguous allocation provides high density and efficiency for licensed bands, while non-contiguous allocation with equal spacing provides flexibility and interference avoidance for unlicensed bands. This local differentiation resolves the contradiction by optimizing each band's allocation strategy independently.
2Duration of action of moving object
If carrier aggregation of licensed and unlicensed bands is implemented, then available resource duration is improved, but system complexity deteriorates
Solution Approach 1:
The patent creates a universal resource allocation framework that handles both licensed and unlicensed bands through a single carrier aggregation mechanism. The base station and user equipment use the same overall architecture and signaling procedures, but automatically adapt the specific allocation method based on band type, thus achieving multi-functionality without proportionally increasing complexity.
3Reliability
If non-contiguous tones with equal spacing are used for unlicensed band, then interference avoidance is improved, but frequency resource utilization deteriorates
Solution Approach 1:
The patent changes the allocation parameter from contiguous to non-contiguous with equal spacing specifically for unlicensed bands. This parameter change prioritizes interference avoidance characteristics of unlicensed spectrum while maintaining acceptable resource utilization through optimized spacing patterns, resolving the contradiction between reliability and productivity for this specific band type.
Data Source
AI summary
The present invention relates to a wireless communication system and, particularly, to a method and a device therefor, the method comprising the steps of: receiving, from a base station, resource allocation information indicating a frequency resource for a transmission of an uplink signal; and transmitting, to the base station, the uplink signal using the frequency resource indicated by the resource allocation information, wherein the frequency resource comprises multiple continuous tones when the resource allocation information relates to an Lcell, and the frequency resource comprises multiple tones separated by the same interval when the resource allocation information relates to a Ucell.