Wireless Communication Device Traffic Information Feedback Control
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Solution Overview
Problem
In wireless LAN communication, the use of scheduling access schemes can lead to disruptions in traffic delivery, as permission for transmission is not always granted to devices with more urgent traffic, resulting in potential delays or failures in delivering high-priority traffic.
Innovation Solution
A wireless communication device that includes a transmission unit to send a request frame for traffic information, a receiving unit to receive a response frame containing the traffic information, and a control unit to manage the transmission of permission frames to identified devices based on the received traffic information, allowing for prioritization of multiple access communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If scheduling access scheme is used in wireless LAN communication, then communication efficiency is improved through multiple access communication, but traffic delivery reliability deteriorates because permission for transmission is not always granted to devices with urgent traffic
Solution Approach 1:
The patent implements a feedback mechanism where the access point requests traffic information from wireless communication devices and uses this feedback to dynamically adjust transmission permission decisions. The control unit receives traffic information indicating the presence or absence of traffic, and based on this feedback, selectively grants transmission permissions to devices that actually have traffic to send, thereby resolving the contradiction between maintaining scheduling efficiency and ensuring reliable traffic delivery.
2Ease of operation
If transmission permission is granted based on scheduling without considering traffic properties, then access control is simplified, but traffic delivery fairness deteriorates because highly urgent traffic may not be prioritized
Solution Approach 1:
The patent changes the parameter used for transmission permission decisions from simple scheduling-based control to traffic-information-based control. The control unit examines traffic information parameters (presence/absence of traffic) and adjusts transmission permission accordingly, allowing highly urgent traffic to be prioritized while maintaining relatively simple access control through the access point's centralized decision-making.
3Reliability
If random access scheme is used in wireless LAN communication, then traffic delivery autonomy is improved, but communication efficiency deteriorates due to lack of coordinated multiple access
Solution Approach 1:
The patent introduces the access point as an intermediary that mediates between devices wanting to transmit and the wireless medium. The access point requests traffic information from devices and grants transmission permissions based on this information, enabling coordinated multiple access that improves communication efficiency while maintaining traffic delivery autonomy through the device's ability to report its own traffic status.
Data Source
AI summary
A wireless communication device includes: a transmission unit that transmits a request frame indicating a request for traffic information; a receiving unit that receives a response frame in which the traffic information is stored; and a control unit that controls transmission of a frame related to permission of transmission directed to a first wireless communication device that is identified on the basis of the traffic information stored in the received response frame and that is permitted to perform multiple access. A wireless communication device includes: a receiving unit that receives a request frame indicating a request for traffic information; a transmission unit that transmits a response frame in which the traffic information is stored in response to the received request frame; and a control unit that controls transmission of a frame related to the traffic information on the basis of a communication parameter related to multiple access.