LRLP Gateway Mode Switching for Wireless Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication technologies in the 2.4 GHz band face interference issues due to overlapping frequency and spatial limitations, making it challenging to enable long-range low-power wireless communications without interference.
Innovation Solution
The proposed solution involves a coordination mechanism using Neighbor Aware Networking (NAN) to allocate time slots and frequency bands, allowing multiple Basic Service Sets (BSS) to operate in either a 20-MHz mode with frequency overlap and spatial isolation or a 2-MHz mode with spatial overlap and frequency isolation, using LRLP gateways to manage traffic and security, and switch between modes to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple BSS operate in the same 20-MHz frequency band with frequency overlap, then spectrum utilization is improved, but interference increases and spatial isolation is required
Solution Approach 1:
The patent implements Time Division Multiplexing (TDM) where multiple BSS operate in periodic time slots within the same 20-MHz frequency band. Each BSS is assigned specific time windows for transmission, allowing frequent switching between BSS to improve spectrum utilization while preventing simultaneous interference through temporal separation.
Solution Approach 2:
The patent segments the 20-MHz frequency band into multiple 2-MHz sub-channels and assigns different BSS to different sub-channels within their respective time slots. This segmentation allows multiple BSS to coexist in the same frequency band by dividing both time and frequency resources, improving overall spectrum utilization while maintaining isolation.
2Speed
If wireless communications use 20-MHz bandwidth for standard WLAN operation, then data rate is improved, but communication range is limited and power consumption increases
Solution Approach 1:
The patent implements dynamic mode switching capability where wireless devices can transition between 20-MHz wideband mode (for high data rates in short-range scenarios) and 2-MHz narrowband mode (for extended range communication). This dynamic adaptation allows the system to optimize between data rate and communication range based on real-time requirements.
Solution Approach 2:
The patent applies different bandwidth qualities to different communication scenarios: 20-MHz bandwidth is allocated for high-speed local communication within a single BSS, while 2-MHz bandwidth is used for long-range communication between BSS. This local quality differentiation optimizes performance for each specific communication need.
3Speed
If wireless devices operate in 20-MHz mode for standard WLAN, then connectivity speed is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic power management through mode switching between 20-MHz high-speed mode and 2-MHz low-power mode. Devices can operate in power-saving 2-MHz mode during periods of low data activity or when communication range is prioritized, and switch to 20-MHz mode only when high data rates are required, thereby reducing overall power consumption.
4Length of moving object
If LRLP mode with 2-MHz bandwidth is used for long-range communication, then communication range is improved and power consumption is reduced, but data rate decreases
Solution Approach 1:
The patent segments the 20-MHz band into multiple 2-MHz sub-channels that can be dynamically allocated. When long-range communication is required, devices use a single 2-MHz sub-channel in LRLP mode for extended range and low power consumption. When high data rates are needed, multiple sub-channels are aggregated to provide 20-MHz bandwidth, thus balancing range and speed requirements.
Data Source
AI summary
Methods and apparatuses pertaining to coordination and provision of non-interfering long-range low-power wireless communications may involve facilitating wireless communications among a first set of wireless devices in a first frequency band when operating in a first mode in which there is frequency overlap and no spatial overlap among the first set of wireless devices. Moreover, wireless communications may be facilitated among a second set of wireless devices in a second frequency band different from the first frequency when operating in a second mode in which there is spatial overlap and no frequency overlap among the second set of wireless devices.