Mobile Station Carrier Switching for Multicast Broadcast Service
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Solution Overview
Problem
Current wireless communication systems supporting multiple carriers face challenges in efficiently and accurately receiving Multicast Broadcast Service (MBS) without interrupting data transmission, particularly in distinguishing between MBS configuration messages transmitted through primary and secondary carriers.
Innovation Solution
A method involving a Mobile Station (MS) receiving a Dynamic Service Addition (DSA) message through a primary carrier, switching to a secondary carrier to receive the MBS Configuration message, and subsequently receiving MBS data through the secondary carrier, with the option to switch back to the primary carrier, while also considering registration messages for MBS capability negotiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MBS configuration message is transmitted through primary carrier, then service continuity is maintained, but broadcasting efficiency is reduced
Solution Approach 1:
The patent segments the carrier into primary carrier and secondary carrier, with different functional assignments. The primary carrier handles control signals and unicast data, while the secondary carrier handles MBS configuration and data. This segmentation allows simultaneous optimization of both broadcasting efficiency and service continuity without compromise.
Solution Approach 2:
The patent introduces a new dimension by utilizing multiple carriers (primary and secondary) to transmit different types of signals. This dimensional expansion allows the system to parallelize operations: control signals on primary carrier while MBS data on secondary carrier, achieving both efficiency and continuity.
2Productivity
If bandwidth is extended to support multi-carrier system, then transmission capacity increases, but power consumption increases
Solution Approach 1:
The patent applies local quality by activating only the necessary carrier(s) for specific services. The primary carrier remains active for control signals, while the secondary carrier is activated only when MBS is needed. This selective activation optimizes power consumption while maintaining high transmission capacity when required.
Solution Approach 2:
The patent implements dynamic carrier activation and deactivation based on service requirements. The system can switch between primary and secondary carriers dynamically, activating only the necessary carriers for current operations. This dynamic adaptation allows the system to maintain high transmission capacity while optimizing power consumption according to actual demand.
3Productivity
If carrier switching is implemented for MBS reception, then broadcasting efficiency improves, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the mobile station with MBS capability information and pre-establishing the carrier switching mechanism. The DSA message includes pre-prepared configuration parameters for the secondary carrier, so when switching is needed, the mobile station can quickly transition without complex real-time configuration, reducing operational complexity.
Solution Approach 2:
The patent implements feedback mechanisms where the base station sends DSA messages to inform the mobile station about MBS availability and configuration details. The mobile station responds with registration messages confirming capability negotiation. This feedback loop simplifies the switching process by ensuring both ends are synchronized before carrier transition occurs.
Data Source
AI summary
Method receiving Multicast Broadcast Service (MBS) in a wireless communication system is provided. The method comprises receiving a Dynamic Service Addition (DSA) message through a primary carrier, from a Base Station (BS); switching from the primary carrier to a secondary carrier based on the DSA message; receiving an MBS Configuration message through the secondary carrier, from the BS; and receiving MBS data through the secondary carrier based on the MBS Configuration message, from the BS.