Dynamic QoS Control in Multicast Wireless Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems lack dynamic adaptive Quality of Service (QoS) control for multicast transmissions, which limits the ability to optimize network resource allocation based on changing network load factors, leading to suboptimal service quality and inefficient bandwidth utilization.
Innovation Solution
Implementing a method for dynamically controlling QoS in multicast transmissions by initiating a multicast transmission with an initial QoS and generating an updated QoS based on network load factors, using a Broadcast-Multicast Service Center (BM-SC) to update parameters and communicate with intermediate nodes for feedback, and indicating these changes through protocols like SDP or HTTP push, without requiring feedback from mobile entities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multicast transmission uses fixed initial QoS, then service quality is stable, but network resource allocation cannot adapt to changing load factors
Solution Approach 1:
The patent implements dynamic QoS control by allowing the network entity to update QoS parameters during multicast transmission based on real-time network load factors. The system transitions from static initial QoS to dynamic adaptive QoS, where parameters such as bandwidth allocation and transmission rates are adjusted continuously to match changing network conditions, thereby achieving adaptability without requiring complex mobile entity feedback mechanisms.
Solution Approach 2:
The patent changes QoS parameters dynamically by modifying transmission bandwidth, data rates, and resource allocation parameters based on network load factors. The network entity monitors load conditions and adjusts QoS parameters in real-time, enabling the system to adapt to varying network demands while maintaining efficient resource utilization and service quality.
2Productivity
If multicast transmission uses updated QoS based on network load, then resource allocation efficiency improves, but service quality stability deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the network entity monitors network load factors and uses this information to dynamically adjust QoS parameters. The system continuously collects load information, processes it through QoS determination logic, and applies appropriate parameter adjustments, creating a closed-loop control system that balances efficiency improvement with service quality stability through adaptive response to changing conditions.
Solution Approach 2:
The patent employs periodic QoS updates where the network entity regularly reassesses network load factors and adjusts QoS parameters at appropriate intervals. This periodic adjustment mechanism allows the system to maintain stability by making controlled, incremental changes rather than abrupt transitions, thereby balancing network efficiency improvements with service quality consistency.
3Quantity of substance
If multicast transmission maintains fixed QoS, then service quality is consistent, but bandwidth utilization becomes inefficient under varying load
Solution Approach 1:
The patent implements self-service QoS management where the network entity autonomously monitors its own load conditions and adjusts QoS parameters without requiring external control or complex manual configuration. The system automatically detects bandwidth utilization patterns, assesses load factors, and modifies transmission parameters accordingly, enabling efficient bandwidth utilization while keeping management operations simple and automated.
4Adaptability or versatility
If multicast transmission implements dynamic QoS updates, then network adaptability improves, but control mechanism complexity increases
Solution Approach 1:
The patent extracts the QoS control function from complex mobile entity feedback loops and concentrates it in the network entity. By taking out the decision-making logic from the mobile devices and centralizing it in the network entity that already has load information, the system achieves dynamic adaptability without requiring complex feedback mechanisms at the mobile entity level, thereby improving adaptability while keeping control mechanisms relatively simple.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A network entity may dynamically control Quality-of-Service (QoS) for a multicast transmission in a wireless communications system, by initiating a multicast transmission having an initial QoS, and later during the multicast transmission, generating an updated QoS for the multicast transmission. The network entity may generate the updated QoS in response to a network load factor for a multicast area aggregated from base stations in the area. The network load factor may indicate a measure of aggregate available bandwidth in the multicast area. The network entity may provide the updated QoS to mobile entities receiving the multicast transmission, which may process a subsequent portion of multicast content according to the updated QoS.