Wireless Transmission in Channel Gaps and Guard Spectrum
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communications, especially in IoT devices, there is a challenge in achieving long-range low-power communications across multiple Basic Service Sets (BSS) without interference, particularly due to overlapping frequency bands and the need for efficient spectrum usage.
Innovation Solution
A novel scheme that facilitates wideband and narrowband wireless communications by multiplexing in frequency and time domains, using channel gaps and guard bands to avoid interference, allowing IoT devices to share space, frequency, and time domains non-interferingly, with LRLP devices communicating in narrowband channels within or near wideband channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If wideband channels are used for wireless communications, then communication bandwidth is improved, but interference between adjacent channels increases
Solution Approach 1:
The patent introduces guard bands as intermediary frequency regions between adjacent wideband channels. These guard bands act as buffers that prevent spectral leakage and interference between channels while allowing efficient use of the available spectrum. The guard bands mediate between the need for wideband communication and the need to avoid inter-channel interference.
Solution Approach 2:
The patent segments the frequency spectrum into multiple wideband channels separated by guard bands. This segmentation allows simultaneous operation of multiple channels without mutual interference, enabling aggregate bandwidth utilization while maintaining isolation between individual channels through the segmented frequency allocation.
2Area of stationary object
If multiple BSS's operate in overlapping spatial domains, then network coverage is improved, but interference between BSS's increases
Solution Approach 1:
The patent resolves spatial interference by transitioning to the frequency dimension. Instead of managing overlapping BSS coverage areas in space, the system allocates different frequency channels and guard bands to different BSS's, allowing them to coexist in overlapping spatial domains without interference by separating them in the frequency dimension.
Solution Approach 2:
The patent applies local quality by assigning specific frequency channel characteristics (wideband channels with guard bands) to different BSS's based on their local requirements. Each BSS can operate with optimized spectral characteristics in its local area while maintaining non-interference with neighboring BSS's through the guard band structure.
3Object-affected harmful factors
If guard bands are inserted between wideband channels, then inter-channel interference is reduced, but spectrum utilization efficiency decreases
Solution Approach 1:
The patent optimizes the balance between guard band size and channel bandwidth by adjusting spectral parameters. The guard bands are sized to provide sufficient interference protection while minimizing spectrum waste, and the wideband channel bandwidths are optimized to maximize data throughput. This parameter optimization achieves both interference reduction and efficient spectrum utilization.
Data Source
AI summary
Methods and apparatuses pertaining to long-range low-power integrated wireless transmission in channel gaps and guard spectrum are described. A method may involve facilitating wideband wireless communications in a plurality of wideband channels in a frequency spectrum with every two adjacent wideband channels of the plurality of wideband channels separated by a respective channel gap therebetween. The method may also involve facilitating narrowband wireless communications, while facilitating the wideband wireless communications, in a plurality of narrowband channels that are multiplexed in the channel gaps, guard bands at both ends of the frequency spectrum, or both.