NB-IoT Resource Allocation for Traffic Rate and Quality
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Solution Overview
Problem
Current NB-IoT technologies fail to simultaneously meet the requirements of traffic rate and communication quality in emerging IoT fields such as Internet of Vehicles and Smart Home.
Innovation Solution
A method and system for allocating NB-IoT system resources, which involves acquiring traffic requests from terminals, determining the necessary bearing carriers and their number based on traffic rate requirements, and setting target downlink transmitting power for each carrier to ensure efficient data transmission within preset thresholds, thereby ensuring both traffic rate and communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional NB-IoT resource allocation methods are used, then device complexity is reduced, but traffic rate requirement cannot be satisfied
Solution Approach 1:
The patent segments the resource allocation process into multiple independent stages: carrier selection based on traffic rate requirements, power allocation based on reception quality, and scheduling decision based on power thresholds. This segmentation allows each stage to focus on specific optimization goals, achieving high traffic rates while maintaining manageable system complexity through modular decision-making.
Solution Approach 2:
The patent implements dynamic resource allocation where the number of bearing carriers and power distribution are adjusted in real-time based on terminal reception quality measurements and traffic rate requirements. The system dynamically selects carriers and allocates power without requiring complex pre-configured settings, enabling adaptive optimization of traffic rate while keeping the allocation mechanism relatively simple.
2Productivity
If more bearing carriers are allocated to meet traffic rate requirements, then traffic rate is improved, but power consumption increases
Solution Approach 1:
The patent changes the power transmission parameter dynamically based on the number of selected bearing carriers. When more carriers are allocated to meet traffic rate requirements, the system adjusts the power distribution across these carriers according to reception quality measurements. This parameter adjustment ensures that additional carriers contribute effectively to traffic rate while minimizing unnecessary power consumption through optimized power allocation rather than uniform maximum power transmission.
Solution Approach 2:
The patent applies local quality optimization by allocating power differently across various bearing carriers based on their individual reception quality measurements. Instead of uniform power distribution, the system assigns higher power to carriers with better reception conditions and lower power to carriers with poorer conditions, thereby meeting traffic rate requirements through strategic carrier utilization while minimizing overall power consumption.
3Reliability
If downlink transmitting power is increased to ensure communication quality, then communication quality is improved, but service coverage is reduced
Solution Approach 1:
The patent segments the service coverage area into different zones based on reception quality measurements. Terminals in different coverage zones are allocated different numbers of bearing carriers and different power levels according to their specific reception conditions. This segmentation allows the system to provide enhanced communication quality to terminals in poor coverage areas through targeted resource allocation while maintaining service coverage in better areas through more efficient resource utilization.
Solution Approach 2:
The patent implements dynamic power allocation where the downlink transmitting power is adjusted in real-time based on terminal reception quality measurements and traffic rate requirements. The system dynamically determines the optimal power level for each terminal-carrier combination, ensuring sufficient communication quality for terminals in poor coverage areas while avoiding excessive power transmission that would waste energy and reduce overall service coverage efficiency.
Data Source
AI summary
Embodiments of the present application belong to the field of NB-IoT, and relate to a method, terminal and server for allocating NB-IoT system resources, capable of satisfying the requirements of traffic rate and communication quality simultaneously. The method comprises the following steps of: acquiring a traffic request of a first terminal; determining bearing carriers and the number of the bearing carriers required for bearing downlink data of the first terminal based on candidate carriers information and downlink traffic rate requirement; determining target downlink transmitting power of each of the bearing carriers based on the reception quality information, the determined bearing carriers, the determined number of the bearing carriers and the reception strength information; and determining to transmit the downlink data of the first terminal on an i-th bearing carrier using the determined target downlink transmitting power if a total downlink transmitting power of the i-th bearing carrier is less than or equal to a first preset threshold.