Wireless Access Point Collision Avoidance via Synchronized Timing
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Solution Overview
Problem
Wireless access point devices experience communication collisions due to simultaneous data packet reception from multiple terminal devices, leading to packet loss and decreased quality of service.
Innovation Solution
A method involving a wireless access point device with functional modules like detecting, determination, parsing, timing, and transmitting modules that manage packet intervals and transmit Clear-to-Sent packets to prevent collisions by synchronizing data transmission timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the wireless access point device serves multiple wireless terminal devices with fixed port time intervals, then communication establishment is simplified, but communication collisions occur leading to packet loss
Solution Approach 1:
The wireless access point device performs preliminary actions by determining whether a received data packet collides with another data packet before completing the reception process. This collision detection and avoidance mechanism is activated in advance to prevent packet loss, allowing the system to maintain simple fixed port time intervals while improving reliability through pre-emptive collision management
Solution Approach 2:
The system implements feedback by monitoring incoming data packets for collision conditions and using this information to manage packet reception. The collision detection mechanism provides continuous feedback about packet reception status, enabling the access point to adjust its handling of subsequent packets and avoid losing data due to collisions
2Productivity
If data packets are transmitted at fixed intervals from multiple terminal devices, then transmission scheduling is simplified, but collisions occur at the access point device
Solution Approach 1:
The access point device performs preliminary collision detection on incoming data packets before they can cause harmful interference. By identifying collision conditions in advance through the detecting module, the system can prevent collisions from propagating through the network, maintaining simple fixed-interval transmission while eliminating the harmful effects
Solution Approach 2:
The system converts the potentially harmful collision condition into beneficial information by detecting and analyzing collision patterns. The collision detection mechanism transforms what would be destructive interference into useful feedback about network traffic conditions, enabling better packet management and scheduling decisions
Data Source
AI summary
A wireless access point device receives a packet including a first source port number from a source wireless terminal device, determines if the packet is a control packet according to the first source port number, and obtains a time interval and a second source port number from the control packet and to receive a new packet. The wireless access point device further determines if the new packet is the data packet according to whether the first source port number of the new packet is the same as the second source port number, starts a timer to time for the time interval once the new packet is the data packet, and transmits a Clear-to-Sent packet to other wireless terminal devices once the timer times out.