Multi-Channel ACK Signaling for Reliable Wireless LAN Communication
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Solution Overview
Problem
Existing communication methods suffer from errors and collisions due to the immediate return of ACK frames on a single frequency channel, leading to degraded communication quality and inefficient retransmissions.
Innovation Solution
A communicating device generates and transmits a request signal using multiple usable frequency channels to confirm data reception, and receives acknowledgment signals on these channels, ensuring reliable communication by monitoring and utilizing multiple frequency channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If an ACK frame is returned immediately on the same frequency channel after data transmission, then communication speed is improved, but communication reliability deteriorates due to errors and collisions
Solution Approach 1:
The patent transitions from single-frequency-channel ACK transmission to multi-frequency-channel ACK transmission. The transmitting device sends ACK frames on multiple frequency channels simultaneously or sequentially, and the receiving device monitors multiple frequency channels for ACK frames. This dimensional expansion from one frequency channel to multiple frequency channels resolves the contradiction by providing both fast acknowledgment (maintaining speed) and error/collision resistance (improving reliability through diversity).
Solution Approach 2:
The patent changes the parameter of frequency channel usage from single-channel to multi-channel for ACK frame transmission. By varying the frequency channel parameter and utilizing multiple channels simultaneously or alternatively, the system achieves both rapid acknowledgment and enhanced reliability through frequency diversity, preventing the degradation caused by errors or collisions on a single channel.
2Device complexity
If a single frequency channel is used for ACK transmission, then device complexity is reduced, but communication reliability deteriorates due to interference and collisions
Solution Approach 1:
The patent introduces multiple frequency channels as an additional dimension for ACK frame transmission. Instead of complicating the single-channel system with complex error correction or collision avoidance mechanisms, the invention expands the frequency channel dimension, allowing simultaneous or alternative ACK transmissions on multiple channels. This approach improves reliability while keeping device complexity relatively low, as the fundamental transmission mechanism remains similar but is applied across multiple frequency dimensions.
3Reliability
If ACK frames are transmitted on multiple frequency channels, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the ACK frame transmission function across multiple frequency channels. Instead of using one complex single-channel transmission system, the ACK transmission is divided into multiple independent transmissions on different frequency channels. Each channel carries the same or different ACK information, and the receiving device monitors multiple channels to capture at least one successful ACK. This segmentation improves reliability while managing device complexity by using simpler, replicated transmission units across multiple channels.
Solution Approach 2:
The patent utilizes parameter changes by varying the frequency channel parameter for ACK frame transmission. The system dynamically selects and transmits ACK frames on multiple frequency channels, changing the frequency parameter to achieve diversity. This approach improves reliability through parameter variation while keeping the transmission mechanism itself relatively simple, thus managing device complexity effectively.
Data Source
AI summary
The present technology relates to a communicating device and a communicating method that can realize communication of higher reliability.A communicating device is provided which includes a control section configured to perform control of transmitting data to another communicating device by using a usable frequency channel, generating a request signal including channel information regarding plural usable frequency channels, the request signal being a signal for requesting an acknowledgment signal used to confirm normal reception of the data, and transmitting the generated request signal to the other communicating device by using the plural frequency channels. The present technology is applicable to wireless LAN systems, for example.