Multicast Frame Transmission via Determined Frequency Channels
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Solution Overview
Problem
In wireless communication systems using the IEEE 802.11be standard, unnecessary frame transmission occurs when an access point (AP) connects with multiple stations (STAs) via multiple frequency channels, leading to redundant transmission of frames to frequency channels that do not need to receive them.
Innovation Solution
A communication apparatus is designed to establish connections with multiple STAs via multiple frequency channels and includes a determination unit to identify the necessary frequency channels for transmitting frames in multicast or broadcast communication. The apparatus then transmits frames only on the determined necessary frequency channels, preventing unnecessary transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an AP transmits frames via multicast or broadcast communication on all established frequency channels, then all connected STAs can receive the frames, but unnecessary frame transmission occurs on frequency channels that do not need to receive the frames
Solution Approach 1:
The patent applies preliminary action by determining the necessary frequency channel for frame transmission before actually transmitting the frame. The AP identifies which frequency channel is needed for multicast/broadcast communication in advance, preventing unnecessary transmissions on channels where no STA needs to receive the frame. This advance determination eliminates wasteful energy consumption while ensuring reliable delivery to all necessary STAs.
2Reliability
If an AP transmits frames via multicast or broadcast communication on all established frequency channels, then all connected STAs can receive the frames, but communication efficiency deteriorates due to redundant transmissions
Solution Approach 1:
The patent applies the extraction principle by removing unnecessary frame transmissions from frequency channels that do not need to receive the frames. By extracting only the essential transmission on the necessary frequency channel, the system eliminates redundant communications while maintaining complete frame delivery to all STAs that require it, thereby improving overall communication efficiency.
3Quantity of substance
If an AP establishes connections with multiple STAs via multiple frequency channels, then communication capacity increases, but the complexity of determining necessary transmission channels increases
Solution Approach 1:
The patent manages the complexity of multi-channel determination by performing preliminary identification of the necessary frequency channel before frame transmission. The AP determines which single frequency channel is required for multicast/broadcast communication in advance, simplifying the transmission decision process even when multiple STAs are connected via multiple frequency channels.
Data Source
AI summary
A communication apparatus includes an establishment unit configured to establish a first connection between the communication apparatus and a first other communication apparatus via one or more links using one or more first frequency channels, and to establish a second connection between the communication apparatus and a second other communication apparatus via one or more links using one or more first frequency channels, a determination unit configured to determine a frequency channel necessary for arriving a frame transmitted in multicast communication or broadcast communication to the first other communication apparatus and the second other communication apparatus, where the frequency channel is determined from among a plurality of frequency channels used in the links of the first and second connections established by the establishment unit, and a transmission unit configured to transmit the frame on the frequency channel determined by the determination unit.