WLAN Mesh Control Message Priority Handling
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Solution Overview
Problem
The IEEE 802.11 standard for WLAN mesh communication systems lacks a detailed method for receivers to switch operation modes after receiving control messages, leading to inefficiencies in processing Wireless Distribution System (WDS) traffic, as the operation modes are switched into waiting modes without proper information about the receiver.
Innovation Solution
A method and system for transmitting and receiving control messages in WLAN mesh communication systems, where a transmitter sets the Media Access Control (MAC) address of priority receivers in the control message frame, allowing receivers to confirm their priority and perform predetermined operations accordingly, ensuring that WDS traffic is prioritized over Basic Service Set (BSS) traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the IEEE 802.11 standard transmits control messages to switch operation modes into waiting modes, then WDS traffic priority is established, but MAPs cannot process generated WDS traffic because they are in waiting modes
Solution Approach 1:
The patent applies local quality by differentiating the operation mode switching behavior based on the receiver's role. Only non-transmitter receivers switch to waiting mode, while the transmitter MAP retains active mode to process WDS traffic. This selective application resolves the contradiction by ensuring that the specific MAP needing to process WDS traffic does not enter waiting mode, while other receivers do switch modes to guarantee traffic priority.
2Reliability
If all receivers switch to waiting modes upon receiving control messages, then WDS traffic priority is ensured, but unnecessary receivers also enter waiting modes reducing system efficiency
Solution Approach 1:
The patent segments the receiver group into two categories: transmitters and non-transmitters. The control message includes a receiver address that allows receivers to identify whether they are the intended recipient. Only non-transmitter receivers switch to waiting mode, while transmitters remain active. This segmentation resolves the contradiction by preventing unnecessary receivers from entering waiting mode while still ensuring WDS traffic priority for the intended recipient.
3Device complexity
If the standard does not include detailed receiver information in control messages, then message simplicity is maintained, but receivers cannot determine whether to switch operation modes
Solution Approach 1:
The patent applies preliminary action by including the receiver address in the control message before the receiver needs to make a decision. The transmitter MAP预先 sets the receiver address field with its own address, enabling the receiver to identify itself as the intended recipient and determine whether to switch to waiting mode. This preliminary inclusion of address information resolves the contradiction by providing necessary identification data without significantly increasing message complexity.
Data Source
AI summary
Disclosed is a method for transmitting/receiving signals in a Wireless Local Area Network (WLAN) mesh communication system. The method includes transmitting, by a transmitter, a control message including an address to receivers according to a generated traffic, if traffic is generated; and receiving, by a receiver, the transmitted control message, confirming the address included in the control message, and performing a predetermined operation according to results obtained by confirming the address.