5G NR Resource Allocation for Cross-Link Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The 5G new radio (NR) system faces challenges in resource allocation across various technical scenarios, including enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), and massive machine-type communication (mMTC), due to cross-link interference and the need for flexible signal transmission methods that can accommodate different service types.
Innovation Solution
A method and apparatus for resource allocation in 5G NR that involves allocating data and pilot signals in overlapping subframes, using multiple numerologies and guard bands, and reallocating resources upon retransmission requests to minimize cross-link interference and optimize signal transmission across different service types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resources are allocated to different service types in overlapping subframes, then resource utilization efficiency is improved, but cross-link interference increases
Solution Approach 1:
The patent segments the time-frequency resource grid into distinct regions for different service types (eMBB and URLLC). By dividing the subframe into separate resource blocks and applying different numerologies (subcarrier spacings), the system allows overlapping allocation while maintaining resource segmentation that manages interference between services.
Solution Approach 2:
The patent applies local quality by assigning different numerologies (e.g., 15 kHz for eMBB, 30 kHz for URLLC) to different service types within the same subframe. This allows each service to have optimized local resource characteristics, enabling efficient resource utilization while managing cross-link interference through localized parameter differentiation.
2Adaptability or versatility
If multiple numerologies are used for different service types, then service adaptability is improved, but system complexity increases
Solution Approach 1:
The patent implements universality by designing a unified resource allocation framework that supports multiple numerologies (15 kHz, 30 kHz, and other subcarrier spacings) within the same 5G NR system. The base station and user equipment can handle different service types (eMBB, URLLC, mMTC) with varying requirements using a common multi-numerology architecture, enabling the system to adapt to diverse services while maintaining operational simplicity through standardized procedures.
Solution Approach 2:
The patent applies dynamics by enabling flexible switching between different numerologies based on service requirements. The system can dynamically allocate 15 kHz subcarrier spacing for eMBB services requiring high data rates, 30 kHz for URLLC services requiring low latency, and adjust accordingly for mMTC services, allowing the network to adapt resource configuration in real-time without requiring separate static systems for each service type.
3Productivity
If pilot signals are allocated in overlapping regions, then resource efficiency is improved, but pilot contamination occurs
Solution Approach 1:
The patent resolves pilot contamination by introducing frequency domain separation as an additional dimension for pilot allocation. When services overlap in time, the system allocates pilots at different frequency positions or uses different frequency shifts for different numerologies, allowing pilots to be distinguished in the frequency domain even when time resources overlap, thus maintaining resource efficiency while preventing contamination.
Data Source
AI summary
The present invention relates to a resource allocation method and apparatus, and a signal transmission method, which are applicable to various technical scenarios of 5G New Radio (NR). A method for operating a communication node for resource allocation in a communication network includes: allocating first data and a first pilot for a first type service to a first block period of a first subframe; allocating second data and a second pilot for a second type service to a second block period overlapping with the first block period; and transmitting the first subframe to another communication node. Here, at least one of the second data and the second pilot is allocated to an area to which the first data is allocated.