5G Random Access for Concurrent NR and NR-Lite Bandwidth Parts
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently supporting both high-bandwidth New Radio (NR) terminals and low-cost, narrow-band NR-lite terminals within a single base station, particularly in the context of 5G communication systems and IoT networks.
Innovation Solution
The proposed solution involves an apparatus and method that allows an NR terminal to operate in a wide bandwidth while concurrently supporting an NR-lite terminal in a narrow band within a single base station by reducing subcarrier spacing, transport block size, or bandwidth part to designated values based on system information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a base station supports both NR terminals (wide bandwidth) and NR-lite terminals (narrow band) concurrently, then the system can serve diverse terminal types with different bandwidth requirements, but the device complexity and configuration management become more complex
Solution Approach 1:
The patent segments the bandwidth resources by creating separate bandwidth parts (BWPs) for NR terminals and NR-lite terminals within the same base station. Each terminal type is assigned dedicated bandwidth resources, allowing independent configuration and management. This segmentation enables the base station to handle diverse terminal requirements without requiring a single complex unified configuration, as each segment can be optimized independently for its specific terminal type.
Solution Approach 2:
The base station is designed with multi-functionality to simultaneously support both NR and NR-lite terminals through a unified architecture. The same base station infrastructure performs multiple functions: serving wideband NR terminals and narrowband NR-lite terminals concurrently. This universal design allows a single base station to adapt to different terminal capabilities without requiring separate dedicated infrastructure for each terminal type, thereby managing complexity through consolidation rather than proliferation of separate systems.
2Device complexity
If NR-lite terminals use reduced subcarrier spacing and bandwidth part, then the terminal complexity and cost are reduced, but the communication efficiency and data rate are limited
Solution Approach 1:
The patent applies local quality by optimizing parameters specifically for NR-lite terminals without affecting NR terminals. Reduced subcarrier spacing and smaller bandwidth parts are applied locally to NR-lite terminals where they are sufficient for their needs, while NR terminals continue to use wider bandwidths and larger subcarrier spacings appropriate for their higher performance requirements. This localized optimization allows NR-lite terminals to achieve adequate communication efficiency for their use cases while maintaining lower complexity, rather than imposing uniform restrictions on all terminals.
Data Source
AI summary
The present disclosure relates to a communication technique which combines a 5th generation (5G) communication system for supporting a higher data transmission rate beyond a 4G system with an internet of things (IoT) technique and a system thereof. The present disclosure may be applied to intelligent services (e.g., a smart home, a smart building, a smart city, a smart car or a connected car, health care, digital education, retail business, security and safety related services, etc.) based on 5G communication technology and IoT related technology. According to various embodiments of the present disclosure, in a wireless communication system, a terminal may include at least one transceiver and at least one processor coupled with the at least one transceiver, the at least one processor may be configured to receive system information from a cell of a base station, determine whether the cell supports new radio (NR) lite, based on the system information, and if the cell supports the NR lite, perform a random access procedure for the cell, and for the terminal performing the NR lite, at least one of a subcarrier spacing (SCS), a transport block (TB) size, or a bandwidth part (BWP) is reduced to a designated value, compared to other terminal not performing the NR lite.