Dynamic Carrier Sense Threshold Adjustment for Wireless Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication networks, as the number of information processing devices increases, excessive transmission suppression occurs, leading to a deterioration in transmission efficiency due to inefficient use of radio resources, especially at desired-wave-to-interference power ratios where transmission errors are likely.
Innovation Solution
The introduction of an information processing device that adjusts the carrier sense detection threshold based on the Link Strength Category field in the PLCP header, allowing simultaneous transmission by slave stations while ensuring reliable reception by master stations, by dynamically changing the detection threshold according to the communication quality and using multiple preamble sequences with different detection thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If carrier sense level thresholds are set to ensure reliable reception, then communication quality is maintained, but transmission efficiency deteriorates due to excessive transmission suppression
Solution Approach 1:
The patent implements dynamic adjustment of carrier sense level thresholds based on Link Strength Category (LSC) values. Instead of using a fixed threshold, the system dynamically changes the threshold according to the communication quality indicated by LSC, allowing the threshold to adapt between a first value (for poor quality) and a second value (for good quality), thereby resolving the contradiction between reliability and transmission efficiency
Solution Approach 2:
The system changes the carrier sense level threshold parameter based on the LSC parameter. When LSC indicates poor communication quality, the threshold is set to a first value that ensures reliable reception; when LSC indicates good communication quality, the threshold is set to a second value that allows more transmissions, thus optimizing both reliability and efficiency through parameter transformation
2Quantity of substance
If the number of information processing devices in the network increases, then network capacity and coverage are improved, but excessive transmission suppression occurs leading to system-wide efficiency deterioration
Solution Approach 1:
The patent applies different carrier sense level thresholds to different spatial locations or communication scenarios based on LSC values. Each device can use a locally optimized threshold appropriate to its communication quality, rather than a uniform network-wide threshold, allowing devices in different locations to operate efficiently without causing excessive suppression across the entire network
Solution Approach 2:
The network is segmented into different communication quality zones based on LSC values. Devices are divided into groups according to their link strength categories, and each group uses appropriate threshold values, preventing the propagation of excessive suppression across the entire network and maintaining overall efficiency
Data Source
Figure 1
Figure 2
Figure 3
AI summary
To efficiently use radio resources. An information processing device is an information processing device that receives a packet transmitted from another information processing device using wireless communication. The information processing device is an information processing device that includes a control unit. The control unit included in the information processing device performs control such that one packet detection condition is selected to be used from a plurality of packet detection conditions in regard to a plurality of packets transmitted from the other information processing device using wireless communication. The control unit included in the information processing device performs control such that one reception operation is selected to be performed from a plurality of reception operations in regard to a plurality of packets transmitted from the other information processing device using wireless communication.