Dynamic Multicast Rate Control via Quality Feedback
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in multicast transmission due to fixed transmission rates, which can lead to prolonged bandwidth occupation and communication quality degradation, especially in varying environments, as they lack dynamic optimization and accurate feedback mechanisms.
Innovation Solution
A communication apparatus and system that dynamically adjusts multicast transmission rates based on real-time feedback from receiving stations regarding communication quality, using indices like packet loss rate and received signal strength to ensure reliable data delivery across the multicast group.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the multicast transmission rate is set to a low speed, then communication quality is maintained for all receiving terminals, but the time during which wireless bandwidth is occupied becomes long, reducing overall transmission efficiency
Solution Approach 1:
The patent applies dynamics by making the multicast transmission rate adjustable rather than fixed. The access point dynamically changes the transmission rate based on feedback information from receiving terminals about their communication quality, allowing the system to adapt between reliability and time efficiency depending on current conditions
Solution Approach 2:
The patent implements feedback mechanisms where receiving terminals report communication quality information back to the access point. This feedback loop enables the access point to make informed decisions about adjusting the multicast transmission rate to optimize both reliability and bandwidth utilization
2Productivity
If the multicast transmission rate is increased to high speed, then bandwidth occupation time is reduced and transmission efficiency improves, but communication quality degrades for terminals at the edge of service area
Solution Approach 1:
The system dynamically adjusts the multicast transmission rate based on real-time feedback from receiving terminals. When communication quality is good across all terminals, the rate increases to improve efficiency; when quality degrades, the rate decreases to maintain reliability
Solution Approach 2:
The patent changes the transmission rate parameter based on communication quality conditions. By monitoring feedback information and adjusting this key parameter, the system optimizes the balance between transmission efficiency and communication quality for all terminals
3Reliability
If the lowest transmission rate is selected to ensure delivery to all terminals, then communication quality is maintained, but unicast communication between terminals suffers from data loss and reduced efficiency
Solution Approach 1:
The multicast transmission rate is dynamically adjusted based on feedback from receiving terminals. When quality is sufficient at higher rates, the system increases the rate to reduce bandwidth occupation time, thereby creating more opportunities for unicast communications and improving overall system productivity
Solution Approach 2:
Receiving terminals provide feedback information about communication quality, enabling the access point to determine when conditions allow for higher transmission rates. This feedback mechanism ensures that unicast communications can proceed without excessive interference from prolonged multicast transmissions
Data Source
AI summary
A communication apparatus that receives, from a plurality of other communication apparatuses, information indicating communication quality of a multicast transmission transmitted from the communication apparatus to each of the plurality of other communication apparatuses, and controls a multicast transmission rate based on the information received from the plurality of other communication apparatuses.