NB-IoT NPUSCH Resource Configuration for Uplink Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing NB-IoT technologies face challenges in efficiently configuring transmission resources for uplink signals, particularly for NB-IoT UEs with different uplink transmission methods, leading to ambiguity in procedures and increased power consumption and device costs.
Innovation Solution
The proposed solution involves configuring time and frequency axis transmission resources for uplink signals using the Narrowband Physical Uplink Shared Channel (NPUSCH), where HARQ ACK/NACK feedback information is transmitted through resource units defined by M subcarriers and K slots or a single subcarrier and K consecutive subframes, allowing for flexible and efficient resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If typical LTE or LTE-Advanced technology is applied to IoT devices, then communication capability is improved, but power consumption and device cost increase
Solution Approach 1:
The patent segments the uplink transmission resources into different types (first type for single-tone, second type for multi-tone) and configures them separately. This segmentation allows the system to optimize resource allocation for each transmission method, enabling IoT devices to use only the necessary resource configuration for their specific transmission type, thereby reducing unnecessary power consumption while maintaining communication capability
Solution Approach 2:
The patent changes the resource configuration parameters based on the uplink transmission method. For single-tone transmission, one set of time-frequency resources is configured, while for multi-tone transmission, a different set is configured. This parameter adaptation allows the system to match resource allocation to the actual transmission needs, preventing over-provisioning and reducing power consumption
2Reliability
If typical LTE or LTE-Advanced technology is applied to IoT devices, then communication capability is improved, but device cost increases
Solution Approach 1:
The patent adapts resource configuration parameters according to the uplink transmission method being used. By configuring appropriate time-frequency resources for single-tone and multi-tone transmissions separately, the system enables simplified device design that can be manufactured at lower cost while still providing full communication capability when needed
3Reliability
If licensed-band radio resource is used for many IoT devices, then communication quality is maintained, but resource availability decreases
Solution Approach 1:
The patent segments uplink transmission resources into distinct types based on transmission methods. This segmentation enables more efficient utilization of licensed-band resources by allocating appropriate resources to each device based on its specific needs, thereby increasing the number of devices that can be supported while maintaining communication quality
Solution Approach 2:
The patent creates a universal resource configuration framework that can accommodate both single-tone and multi-tone transmission methods. This multi-functional approach allows the same system to serve diverse IoT device requirements using the same licensed-band resources, effectively increasing resource availability for a larger number of devices
4Adaptability or versatility
If different uplink transmission methods are supported, then device flexibility is improved, but procedure ambiguity increases
Solution Approach 1:
The patent segments resource configuration into distinct types corresponding to different uplink transmission methods. By clearly separating first-type resources for single-tone transmission and second-type resources for multi-tone transmission, the patent eliminates procedure ambiguity while maintaining device flexibility. Each transmission method has its own dedicated resource configuration rules, making the procedures clear and unambiguous
Data Source
AI summary
Provided is a method for transmitting an uplink signal by a NarrowBand IoT (Internet of Things) UE and a device therefor. The method may include: receiving downlink data from a base station; generating HARQ ACK/NACK feedback information related to the downlink data; and transmitting the HARQ ACK/NACK feedback information to the base station through a Narrowband Physical Uplink Shared Channel (NPUSCH), wherein the NPUSCH is mapped to a resource unit configured by M subcarriers and K slots.