5G NR Frequency Resource Allocation Using Bandwidth Coefficients
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The 5G new radio (NR) system requires enhanced uplink and downlink frequency domain resource allocation to accommodate larger bandwidths, which is not efficiently supported by existing LTE resource allocation mechanisms.
Innovation Solution
The method involves determining a coefficient based on the size of the activated bandwidth part to calculate the starting position and number of continuous frequency-domain resources or determining the size of a resource block group for noncontinuous frequency-domain resources, allowing for efficient allocation and reception of resources in the NR system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing LTE resource allocation mechanisms are used, then implementation simplicity is maintained, but the ability to accommodate larger bandwidths in 5G NR systems is insufficient
Solution Approach 1:
The patent modifies the RIV calculation formula by introducing a coefficient that scales with bandwidth part size. This parameter change allows the same basic allocation mechanism to adapt to different bandwidth sizes in 5G NR systems, enabling larger bandwidth accommodation while maintaining the familiar LTE resource allocation structure.
Solution Approach 2:
The resource allocation mechanism becomes dynamic by adjusting the coefficient based on the activated bandwidth part size. This dynamic adaptation allows the system to flexibly handle varying bandwidth requirements in 5G NR without requiring completely new allocation mechanisms for different bandwidth scenarios.
2Quantity of substance
If the maximum number of resource blocks is increased to 275 in NR system, then bandwidth capacity is improved, but the existing RIV calculation formula becomes inadequate
Solution Approach 1:
The patent introduces a coefficient parameter that is determined based on the size of the activated bandwidth part. This coefficient modifies the RIV calculation to properly scale with the increased number of resource blocks (up to 275), ensuring that resource indication remains accurate across the expanded bandwidth range while maintaining compatibility with the existing RIV framework.
3Adaptability or versatility
If a coefficient-based approach is used for resource allocation, then adaptability to larger bandwidths is improved, but calculation complexity increases
Solution Approach 1:
The coefficient is determined in advance based on the size of the activated bandwidth part, before the actual resource allocation calculation. This preliminary determination simplifies the overall process by pre-computing the scaling factor, making the subsequent RIV calculation straightforward and reducing real-time computational complexity.
Data Source
AI summary
Methods and apparatuses for allocating and receiving frequency-domain resources and a communication system. The method includes: determining a coefficient used for obtaining the continuous frequency-domain resources based on a size of a currently activated bandwidth part, and obtaining a starting position of the continuous frequency-domain resources and the number of continuous resource blocks according to the resource indication value and the coefficient; or determining a size of a resource block group used for obtaining the noncontinuous frequency-domain resources based on a size of a currently activated bandwidth part and a format of downlink control information, and obtaining one or more resource block groups of the noncontinuous frequency-domain resources according to the bitmap information and the size of a resource block group.