Wireless Data Transmission Scheduling With Adaptive CTS-to-Self Signals
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Solution Overview
Problem
Current methods fail to effectively reduce interference between Wi-Fi systems and other heterogeneous wireless communication systems, particularly when they coexist in the same channel, leading to inefficient data transmission and potential collisions.
Innovation Solution
A method that involves receiving transmission schedules from coexisting wireless systems, determining usable and unusable time periods, and using clear to send (CTS) to self signals or power saving signals to manage data transmission, with the option to dynamically adjust a threshold for optimal interference reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If time division multiplexing is used to allocate transmission periods for different wireless systems, then interference between systems is reduced, but data transmission efficiency deteriorates due to restricted transmission windows
Solution Approach 1:
The patent applies dynamics by making the CTS-to-self signal duration adaptive rather than fixed. The duration is dynamically adjusted based on the actual transmission schedules of other wireless systems, allowing the system to optimize between interference reduction and transmission efficiency in real-time conditions
Solution Approach 2:
The patent changes the parameter of CTS-to-self signal duration from a fixed value to a variable that depends on the transmission schedules of coexisting wireless systems. This parameter adjustment allows flexible balancing of interference reduction and channel utilization
2Object-affected harmful factors
If CTS to self signal is sent to reserve channel for the entire usable time period, then interference is reduced, but channel utilization deteriorates due to excessive reservation
Solution Approach 1:
The patent applies partial action by sending CTS-to-self signals only for the necessary duration to protect against actual interference threats, rather than reserving the entire usable time period. This partial reservation approach reduces unnecessary channel blocking while maintaining adequate protection
3Object-affected harmful factors
If transmission schedule is strictly followed for all wireless systems, then interference is minimized, but adaptability to dynamic channel conditions deteriorates
Solution Approach 1:
The patent implements feedback by continuously monitoring the transmission schedules of other wireless systems and adjusting the CTS-to-self signal duration accordingly. This feedback mechanism enables the system to adapt to changing channel conditions while maintaining interference reduction benefits
Data Source
AI summary
A method of managing data transmission for a receiving terminal of a first wireless system wherein the first wireless system coexists with at least one second wireless system includes receiving a transmission schedule of each of the at least one second wireless system; determining a usable time period for the first wireless system according to the transmission schedule of each of the at least one second wireless system; and sending a clear to send (CTS) to self signal or a power saving signal to indicate an interruption of the usable time period according to a length of the usable time period.