Wireless Backhaul Frequency Offsets for Low-Latency IoT Relay
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Solution Overview
Problem
Conventional wireless communication systems face challenges in handling a massive number of wireless sensors and IoT devices, with issues such as increased latency, signal noise, and interference due to the limitations of Wi-Fi® protocols, especially in sub 6 GHz frequencies, and the introduction of additional access points further exacerbates these problems.
Innovation Solution
A wireless communication system employing an intelligent frequency offset strategy for concurrent download and upload data streams using a dual-link data backhaul, operating in sub-9 GHz frequencies, which allows parallel data transfer without complex scheduling mechanisms, reducing signal noise and interference, and achieving near-zero latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple wireless access points are introduced to extend coverage, then wireless coverage area is improved, but latency and signal noise increase
Solution Approach 1:
The patent combines multiple access points into a unified mesh network architecture where nodes cooperate through standardized protocols. This merging approach allows distributed intelligence and coordinated signal relay, extending coverage while maintaining consistent latency performance across the network through synchronized operations.
Solution Approach 2:
The patent introduces spatial dimension optimization through intelligent node placement and three-dimensional mesh topology. By utilizing vertical and horizontal spatial dimensions for node distribution, the system extends coverage area while minimizing signal hops and reducing latency through optimized geometric arrangements.
2Area of stationary object
If multiple wireless access points are introduced to extend coverage, then wireless coverage area is improved, but signal noise and interference increase
Solution Approach 1:
The patent implements periodic channel sensing and dynamic frequency hopping mechanisms where access points periodically scan for interference and switch operating channels. This periodic action allows the network to adapt to changing interference conditions, extending coverage while maintaining signal quality through time-based separation of conflicting transmissions.
Solution Approach 2:
The patent dynamically changes operational parameters including frequency channels, transmission power levels, and modulation schemes based on real-time network conditions. By adjusting these parameters across different spatial locations, the system extends coverage area while minimizing signal noise and interference through adaptive parameter optimization.
3Ease of operation
If Wi-Fi protocols are used in sub 6 GHz frequencies, then wireless communication is achieved, but bandwidth is limited
Solution Approach 1:
The patent segments the available spectrum into multiple narrow bandwidth channels and uses spatial multiplexing to transmit multiple data streams simultaneously. By dividing the communication task across multiple spatial paths and frequency channels, the system achieves high data transmission rates while maintaining compatibility with existing Wi-Fi protocols in sub-6 GHz bands.
Solution Approach 2:
The patent designs access points with multi-functional capabilities that can operate across multiple frequency bands and support multiple wireless standards simultaneously. This universality allows the system to maintain ease of operation with existing Wi-Fi devices while achieving enhanced productivity through coordinated multi-band transmissions and spectrum aggregation techniques.
Data Source
AI summary
A wireless communication system includes a master wireless communication device, a plurality of intermediate repeater devices, and one or more service wireless communication devices. Each intermediate repeater device receives, from an upstream network node, a first RF carrier signal in a first frequency carrying a download data stream and further relays, the download data stream in a second RF carrier signal at a second frequency to a downstream network node. The second frequency is a first offset of the first frequency. Each intermediate repeater device further receives a third RF carrier signal carrying an upload data stream in a third frequency from a downstream network node and further communicates the upload data stream in a fourth RF carrier signal in a fourth frequency to the upstream network node. The fourth frequency is a second offset of the third frequency.