MBS Proxy Synchronization for Idle Mode Power Saving
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Solution Overview
Problem
Multicast and broadcast systems face challenges in ensuring synchronization and macro diversity for efficient content delivery to multiple users, particularly in idle mode, which affects power consumption and resource utilization.
Innovation Solution
The method involves a distributed data path function and a proxy component that assign identification keys, determine synchronization information, and construct burst groups, enabling the creation of data packets tagged with sequence numbers for transmission, ensuring synchronized content delivery across base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If multicast and broadcast service is provided to mobile stations in idle mode, then power consumption is reduced and resource utilization is improved, but synchronization and macro diversity become challenging to maintain
Solution Approach 1:
The system performs preliminary actions by establishing synchronization relationships and configuring macro diversity parameters before the mobile station enters idle mode. The network pre-configures the mobile station with synchronization information and macro diversity parameters, allowing it to maintain synchronized reception across multiple base stations without continuous active communication, thus reducing power consumption while maintaining reliability
Solution Approach 2:
The patent introduces an intermediary mechanism where the network controller acts as a mediator to coordinate synchronization between multiple base stations and mobile stations in idle mode. The controller distributes synchronization information and manages macro diversity configurations, enabling reliable content delivery without requiring continuous active connections from mobile stations
2Productivity
If mobile station moves between base stations in the same MBS zone, then service continuity is maintained, but re-establishing connection and monitoring service flow requires network re-entry which increases complexity
Solution Approach 1:
The mobile station is enabled with self-service capabilities through pre-configured synchronization information and macro diversity parameters. When moving between base stations in the same MBS zone, the mobile station can autonomously maintain service reception using the pre-configured parameters without requiring network re-entry or connection re-establishment, thus maintaining service continuity while reducing system complexity
Solution Approach 2:
The network performs preliminary configuration of the mobile station with synchronization information and macro diversity parameters before mobility occurs. This advance preparation allows the mobile station to seamlessly switch between base stations without requiring complex re-establishment procedures, maintaining service continuity while simplifying the overall system operation
3Reliability
If multiple base stations transmit the same content, then macro diversity is achieved and power saving is enabled, but ensuring exact same content with exact same order requires complex synchronization mechanisms
Solution Approach 1:
The patent applies homogeneity by ensuring that all base stations in the MBS zone transmit identical content in the same order using unified synchronization information. The network controller enforces homogeneous transmission parameters across all base stations, including timing, frequency, and content sequencing, thereby achieving reliable macro diversity while avoiding the need for complex individual synchronization mechanisms at each base station
Data Source
AI summary
A method and system for multicast and broadcast system (MCBCS) synchronization and macro diversity is provided. In an embodiment, an MBS Proxy creates the necessary messages with synchronization rules embedded therein. The messages are provided to an MBS Distributed DPF and a base station, which performs a final PHY frame construction for transmission. In another embodiment, the MBS Proxy provides the necessary information to the base station and the base station creates the messages, including the synchronization rules. In yet another embodiment, the base station receives raw IP packet information and synchronization information. In this last embodiment, the base station creates the packets and frames based on the information provided to it.