Bandwidth Part Configurations for 5G Power and Data Rate Management
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Solution Overview
Problem
In 5G wireless systems, supporting multiple physical layer configurations requires managing wide bandwidths efficiently, which poses challenges in power consumption and resource allocation, particularly in single carrier wideband operations without carrier aggregation.
Innovation Solution
The system configures control resource sets and reference signals for bandwidth parts, allowing dynamic allocation of resources, including Physical Downlink Control Channel (PDCCH) and Physical Downlink Shared Control Channel (PDSCH), and Resource Blocks (RBs), with options for Common PRB indexing and Local UE specific PRB indexing, to optimize power usage and data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wide bandwidth is supported in single carrier mode, then high data rates are achieved, but power consumption increases
Solution Approach 1:
The patent divides the total bandwidth into multiple bandwidth parts (BWPs), each with its own numerology configuration. The UE can be configured with multiple BWPs but only activates one at a time for data transmission. This segmentation allows the UE to operate on a limited bandwidth (reducing power consumption) while still having access to wider bandwidth resources when needed for high data rate requirements.
2Adaptability or versatility
If multiple physical layer configurations are supported, then service requirements are met, but device complexity increases
Solution Approach 1:
The patent implements dynamic BWP switching where the network can configure multiple BWPs with different numerologies and dynamically indicate which BWP should be active at any given time through DCI signaling. This dynamic approach allows the system to adapt to different service requirements (e.g., eMBB, URLLC, mMTC) without requiring the UE to permanently support all configurations simultaneously, thereby managing complexity while maintaining versatility.
3Productivity
If bandwidth parts are dynamically allocated, then resource efficiency is improved, but scheduling complexity increases
Solution Approach 1:
The patent employs preliminary configuration of multiple BWPs with different numerologies before actual data transmission. The network configures the available BWPs and their parameters in advance, then uses simple DCI signaling to indicate which pre-configured BWP should be activated. This preliminary action approach simplifies the scheduling complexity by avoiding real-time complex negotiations, while still enabling efficient resource allocation based on current channel conditions and service requirements.
Data Source
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AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Embodiments disclosed herein provide a method for managing a resource in a wireless communication system. The method includes allocating, by a base station, the resource for a data transmission from a User Equipment (UE) by indicating at least one bandwidth part in a total bandwidth supported by the UE. The resource is further allocated by indicating a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Shared Control Channel (PDSCH) according to a configured subcarrier spacing and a CP length within the at least one bandwidth part, and by indicating an allocation of Resource Blocks (RBs) within the at least one bandwidth part.