Split Radio Bearer Structure for Dynamic MBS Switching
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Solution Overview
Problem
Existing MBMS transmission methods in cellular wireless communication networks struggle with inefficiencies due to varying numbers of user equipment receiving data, making it difficult to dynamically adjust transmission types for optimal resource utilization.
Innovation Solution
A method and apparatus for dynamically switching between unicast and multicast/broadcast transmission types by transmitting switching instruction information to user equipment, allowing the equipment to adapt its reception type accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base station transmits MBMS service data using a fixed transmission type, then the transmission method is simple to implement, but the system efficiency varies depending on the number of UEs receiving the data
Solution Approach 1:
The patent implements dynamic switching between unicast and multicast transmission types based on the number of UEs receiving MBMS service data. The base station monitors UE count and automatically transitions transmission modes to optimize system efficiency, making the transmission system adaptive rather than fixed.
Solution Approach 2:
The patent changes the transmission type parameter (unicast/multicast) based on the number of receiving UEs. When UE count exceeds a threshold, the system switches from unicast to multicast transmission, and vice versa, optimizing resource utilization according to actual service demand.
2Productivity
If the base station dynamically changes transmission type based on number of UEs, then the efficiency of transmitting MBMS service data is improved, but the complexity of transmission control increases
Solution Approach 1:
The base station dynamically changes the transmission type parameter (unicast/multicast) based on the number of receiving UEs. When UE count exceeds a threshold, the system switches from unicast to multicast transmission, and vice versa, optimizing resource utilization according to actual service demand.
Solution Approach 2:
The system implements feedback mechanisms where the base station monitors the number of UEs receiving MBMS service data and uses this information to determine when to switch transmission types. This feedback loop enables automatic optimization of transmission efficiency based on actual network conditions.
3Reliability
If unicast transmission is used for MBS data, then each UE receives data individually ensuring reliable delivery, but radio resource utilization is inefficient when multiple UEs receive the same data
Solution Approach 1:
The patent implements dynamic switching between unicast and multicast transmission types based on the number of UEs receiving MBMS service data. The base station monitors UE count and automatically transitions transmission modes to optimize system efficiency, making the transmission system adaptive rather than fixed.
Solution Approach 2:
The patent changes the transmission type parameter (unicast/multicast) based on the number of receiving UEs. When UE count exceeds a threshold, the system switches from unicast to multicast transmission, and vice versa, optimizing resource utilization according to actual service demand.
4Use of energy by moving object
If multicast transmission is used for MBS data, then radio resource utilization is improved by transmitting once to multiple UEs, but individual UE reception reliability may be compromised compared to unicast
Solution Approach 1:
The patent implements dynamic switching between unicast and multicast transmission types based on the number of UEs receiving MBMS service data. The base station monitors UE count and automatically transitions transmission modes to optimize system efficiency, making the transmission system adaptive rather than fixed.
Solution Approach 2:
The patent changes the transmission type parameter (unicast/multicast) based on the number of receiving UEs. When UE count exceeds a threshold, the system switches from unicast to multicast transmission, and vice versa, optimizing resource utilization according to actual service demand.
Data Source
AI summary
Provided are a method and device for switching between unicast transmission and multicast/broadcast service (MBS) transmission in a cellular wireless communication network. The method for a base station to switch MBS data transmission may include: transmitting configuration information for reception of MBS data of a user equipment (UE) to the UE; transmitting information instructing a change of radio bearer for the reception of the MBS data to the UE; and receiving a packet data convergence protocol (PDCP) status report from the UE.