Carrier Switching for Multicast Broadcast Services in Wireless Systems
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Solution Overview
Problem
Current wireless communication systems using multi-carriers lack a specific procedure for Enhanced-Multicast Broadcast Services (E-MBS), leading to inefficient resource distribution and service delivery when providing multimedia services to multiple users simultaneously.
Innovation Solution
The implementation of a method and apparatus for switching between primary and secondary carriers in a wireless communication system, allowing for efficient E-MBS data transmission by performing capability exchanges and configuring service flows using the secondary carrier for downlink E-MBS data, while using the primary carrier for control functions and uplink data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a dedicated E-MBS carrier is introduced to improve service efficiency, then service delivery quality improves, but system complexity increases due to carrier switching procedures
Solution Approach 1:
The patent segments the carrier functionality by designating specific carriers as E-MBS dedicated carriers, separating multicast/broadcast services from unicast services. This segmentation allows optimized resource allocation where E-MBS carriers handle only multicast traffic, improving service delivery efficiency while maintaining clear functional boundaries that reduce operational complexity
Solution Approach 2:
The patent implements preliminary carrier configuration and capability exchange procedures before E-MBS service activation. The base station and terminal perform advance negotiations about carrier capabilities and switching parameters, establishing switching rules in advance. This preliminary action reduces real-time decision complexity during actual carrier switching operations
2Productivity
If carrier switching is implemented to dedicate secondary carrier for E-MBS, then resource allocation efficiency improves, but service continuity may be affected during switching transitions
Solution Approach 1:
The patent performs capability exchange and carrier configuration negotiations before activating E-MBS services. The base station and terminal exchange messages (AAI_REG_REQ, AAI_REG_RSP, AAI_E-MBS-CFG) to pre-establish carrier parameters, switching conditions, and service flow configurations. This advance preparation ensures that when carrier switching occurs, both parties have the necessary information to maintain service continuity without interruption
Solution Approach 2:
The patent implements a feedback mechanism where the terminal reports its E-MBS capabilities and received configuration parameters back to the base station. The base station uses this feedback to adjust carrier allocation and switching parameters, ensuring that switching decisions maintain service continuity. The confirmation messages provide feedback loops that verify successful configuration before activating carrier switching
Data Source
AI summary
A method for operating a base station for Multicast Broadcast Services (MBS) in a wireless communication system that uses a multi-carrier is provided. In the method, MBS capability exchange is performed on a terminal using a primary carrier. A first message for configuring at least one MBS service flow is received from the terminal. A second message is transmitted to the terminal in response to the first message. The second message includes switching information between the primary carrier and a secondary carrier. MBS data is transmitted using the secondary carrier.