Wireless Bearer Switching for Multicast Overhead Reduction
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in multicast data transmission, leading to increased overhead, reduced resource utilization, and increased transmission delays, particularly when transitioning between unicast and multicast bearers.
Innovation Solution
The method involves a control plane in the access network that determines whether to use a unicast or multicast bearer for data transmission, sending a bearer determination notification to the user plane, and managing the transition to minimize data loss and delay, while optimizing resource usage by directly accessing multicast groups and reducing signaling interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the system uses traditional multicast data transmission methods, then the transmission can be established, but the overhead increases and resource utilization decreases
Solution Approach 1:
The patent implements dynamic switching between unicast and multicast bearers based on real-time transmission conditions. The system monitors transmission parameters and automatically transitions between transmission modes to optimize resource utilization and reduce overhead, resolving the contradiction between efficient resource use and transmission reliability
Solution Approach 2:
The system changes transmission parameters by switching between unicast and multicast bearers according to network conditions. This parameter change enables the system to adapt to varying transmission requirements, reducing overhead when multicast is suitable while maintaining reliability when unicast is needed
2Adaptability or versatility
If the system transitions between unicast and multicast bearers, then transmission flexibility is improved, but transmission delays increase
Solution Approach 1:
The system performs preliminary actions by pre-establishing both unicast and multicast bearers before actual data transmission begins. This allows for seamless switching between transmission modes without interruption, maintaining transmission flexibility while minimizing delays through prepared infrastructure
Solution Approach 2:
The patent implements feedback mechanisms that continuously monitor transmission conditions and trigger mode switching when necessary. This feedback loop enables the system to adapt to changing network conditions while minimizing transition delays through rapid, condition-based switching
3Productivity
If the system uses multicast bearers for all transmissions, then resource utilization improves, but transmission reliability decreases
Solution Approach 1:
The system dynamically selects between unicast and multicast bearers based on real-time transmission conditions, user requirements, and network state. This dynamic adaptation ensures that multicast is used only when appropriate for maximizing resource utilization, while unicast is employed when reliability is critical, thus resolving the contradiction between productivity and reliability
Data Source
AI summary
A method and device for transmitting data in a wireless communication network are provided. The method includes: receiving a first multicast session start request message including an identification of a packet data unit (PDU) session corresponding to a multicast service and information on a multicast group from a core network; transmitting a second multicast session start request message including the information on the multicast group to a distribution unit (DU) of the access network; receiving a second multicast session start response message in response to the second multicast session start request message from the DU of the access network; and transmitting a first multicast session start response message to the core network in response to the first multicast session start request message.