Guard Band Allocation for IoT Interference
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Solution Overview
Problem
Mobile Network Operators face challenges in allocating bandwidth for IoT networks that require an ultra-low cost air interface with long battery life, scalability, security, and ease of access, while minimizing interference with existing communication systems.
Innovation Solution
The method involves identifying bandwidth within guard bands of existing communication channels and allocating it non-uniformly to IoT devices, using frequency diversity, and controlling power levels to minimize interference and optimize channel usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If guard band bandwidth is allocated to IoT communication, then bandwidth availability for IoT is improved, but interference with existing communication systems increases
Solution Approach 1:
The patent applies local quality by implementing non-uniform power spectral density distribution across the guard band, where different frequency portions are allocated with different power levels. Channels closer to the center of the guard band receive higher power allocation while edges receive lower power, optimizing IoT communication performance while minimizing interference to adjacent licensed bands.
Solution Approach 2:
The patent changes the parameter of power spectral density distribution from uniform to non-uniform. By adjusting power levels across different frequency portions of the guard band and modifying channel allocation parameters, the system optimizes bandwidth utilization while controlling interference characteristics to existing communication systems.
2Productivity
If non-uniform allocation is applied across guard band portions, then channel utilization efficiency is improved, but system complexity increases
Solution Approach 1:
The patent segments the guard band into multiple frequency portions or channels, allowing independent power allocation and resource management for each segment. This segmentation enables efficient utilization of different guard band regions while maintaining manageable system complexity through modular resource allocation.
Solution Approach 2:
The patent implements dynamic resource allocation where power levels and channel assignments in different guard band portions can be adjusted based on traffic demands, channel conditions, and interference levels. This dynamic approach optimizes channel utilization efficiency while the allocation mechanism adapts to changing system conditions.
Data Source
AI summary
A method for allocating bandwidth to communication according to a first communication protocol, the method comprising identifying bandwidth that is allocated to a communication channel for communication according to a second communication protocol and which forms a guard band of the communication channel and allocating the identified bandwidth to communication according to the first communication protocol, said allocation being performed non-uniformly across the identified bandwidth such that an allocation of a first portion of the identified bandwidth, which is located closer to a communication according to the second communication protocol than a second portion of the identified bandwidth, is constrained to a greater extent than an allocation of the second portion of the identified bandwidth.