CIoT Resource Allocation via Coverage Class Adaptation
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Solution Overview
Problem
CIoT devices often operate in varied communication environments, requiring tailored transmission schemes and resources to ensure coverage, but configuring for the worst-case scenario leads to inefficient use of communication resources.
Innovation Solution
A method and apparatus that dynamically allocate communication resources and apply different modulation and coding schemes based on the specific communication environment of each CIoT device, using coverage classes to optimize resource allocation and prevent collisions between resource blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission scheme and resources are configured for the worst communication environment to ensure sufficient coverage, then coverage is improved, but communication resource efficiency deteriorates
Solution Approach 1:
The patent applies local quality by configuring transmission parameters (modulation scheme, coding rate, number of repetitions) according to the specific communication environment of each CIoT device. Devices are classified into different coverage classes (CC1, CC2, CC3) based on their channel conditions, and each class receives tailored transmission configurations rather than a uniform worst-case setup. This ensures each device gets appropriate coverage while avoiding unnecessary resource consumption.
Solution Approach 2:
The patent implements dynamics by enabling the network to dynamically adjust transmission parameters based on device-specific channel conditions. The base station determines coverage class and configures uplink transmission parameters adaptively for each device, allowing the system to respond to varying communication environments in real-time rather than using static worst-case configurations for all devices.
2Device complexity
If uniform transmission configuration is applied to all CIoT devices, then device complexity is reduced, but communication efficiency for devices in varied environments deteriorates
Solution Approach 1:
The patent applies self-service by having the base station automatically determine the coverage class and configure appropriate transmission parameters for each CIoT device based on their communication environment. The network side performs the classification and configuration work, so CIoT devices themselves do not need complex transmission configuration capabilities. This maintains low device complexity while achieving environment-adaptive communication efficiency.
3Reliability
If more transmission resources are allocated to ensure coverage in poor environments, then coverage is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent applies parameter changes by adjusting transmission parameters (modulation and coding scheme, number of repetitions, resource block allocation) according to the coverage class of each device. Devices in poorer communication environments (higher coverage classes) receive more robust configurations with more repetitions and lower modulation orders, while devices in better environments receive more efficient configurations. This dynamic parameter adjustment ensures sufficient coverage for all devices while optimizing resource utilization efficiency.
Data Source
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AI summary
The present disclosure relates to a communication scheme and system which fuse a 5G communication system for supporting a higher data transfer rate than a 4G system with IoT technology, and a system thereof. The present disclosure may be applied to smart services such as smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security and safety services, etc., based on 5G communication technologies and IoT related technologies. The communication method with a device according to the present invention comprises the steps of: transmitting information on frequency hopping settings to the device; and receiving, from the device, an uplink signal which hops frequencies according to the frequency hopping settings, wherein the frequency hopping settings are configured in a way that the uplink signal hops frequencies according to hopping patterns which hop according to frequency hopping steps, and to additional mirroring hopping patterns which are respectively inserted between the hopping patterns.