User Apparatus Wideband Resource Allocation for IoT Data Rate
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Solution Overview
Problem
Current IoT devices, such as wearable devices and smart meters, require a higher data rate than what is supported by Category M1 in LTE-based systems, which limits their bandwidth to six resource blocks and a data rate of 1 Mbps, necessitating a technique to enable wideband communication beyond the narrowband capabilities of Category M1.
Innovation Solution
A user apparatus in a radio communication system that includes a receiver unit for receiving designation information for resource groups with a predetermined number of resource blocks and a communication unit to perform data communication using allocated resources, allowing for wideband communication by designating a resource group with a bandwidth larger than six resource blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Category M1 narrowband communication is used, then device complexity is reduced and power consumption is lowered, but data rate is limited to 1 Mbps
Solution Approach 1:
The user apparatus dynamically switches between narrowband and wideband communication modes based on data rate requirements. The apparatus can operate in Category M1 narrowband mode (6 RBs) for low data rate applications and switch to wideband mode with larger resource block allocations when higher data rates are needed, making the system adaptable to different communication demands
Solution Approach 2:
The invention changes the bandwidth parameter by allowing the user apparatus to utilize resource blocks beyond the traditional 6 RB limit of Category M1. The apparatus can be allocated up to 25 RBs or more through extended resource allocation mechanisms, thereby increasing the data rate capability while maintaining compatibility with existing narrowband infrastructure
2Productivity
If bandwidth is increased beyond six resource blocks, then data rate capability is improved, but compatibility with existing narrowband systems deteriorates
Solution Approach 1:
The user apparatus is designed with multi-functionality to operate in both narrowband Category M1 mode and wideband mode. The apparatus can function as a traditional narrowband device when connected to legacy networks, and simultaneously support wideband communication when allocated sufficient resource blocks, making it universally compatible across different network configurations
Solution Approach 2:
The wideband resource allocation is segmented into multiple resource blocks that can be dynamically assigned. The system divides the available spectrum into discrete RB units, allowing flexible allocation where the user apparatus can receive 6 RBs for narrowband operation or up to 25+ RBs for wideband operation, maintaining compatibility through modular resource assignment
Data Source
AI summary
A user apparatus in a radio communication system including a base station and the user apparatus includes: a receiver unit configured to receive, from the base station, first designation information for designating a resource group including a plurality of resources each including a bandwidth of a predetermined number of resource blocks and second designation information for designating allocation resources in the resource group; and a communication unit configured to perform data communication using the allocation resources designated by the second designation information in the resource group designated by the first designation information.