DMB Service Update via Reconfiguration Version Data
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Solution Overview
Problem
Conventional DMB systems lack a viable method to notify users of ensemble configuration changes, especially when non-active configurations are altered, and existing solutions require periodic FIC decoding in fade areas, which is inefficient.
Innovation Solution
A method involving a broadcast data frame with an occurrence change field and reconfiguration version data is used to initiate service updates, allowing terminals to proactively manage changes in ensemble configurations by comparing version data and performing updates only when necessary, with the change flag indicating when a service update is required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If periodic FIC decoding is performed to detect ensemble configuration changes, then users can be notified of changes, but system complexity and processing overhead increase significantly
Solution Approach 1:
The patent extracts the change notification function from the periodic FIC decoding process by introducing a dedicated reconfiguration notification field in the MCI. This field carries version information that explicitly indicates whether configuration changes have occurred, separating the notification mechanism from the general service information decoding process.
Solution Approach 2:
The patent introduces version information as an intermediary element in the MCI that mediates between the broadcast system and the terminal. This version information acts as a simple indicator that triggers configuration updates only when changed, avoiding the need for continuous FIC decoding while ensuring reliable notification of changes.
2Reliability
If FIC decoding is performed in fade areas, then configuration changes can be detected, but decoding accuracy and reliability deteriorate due to signal fading
Solution Approach 1:
The patent performs preliminary action by broadcasting the reconfiguration notification field in advance in non-fade areas where signal quality is good. The version information is prepared and transmitted beforehand, allowing terminals to update configurations proactively before entering fade areas, thus avoiding the need to decode FIC during signal fading conditions.
3Loss of time
If continuous monitoring of ensemble configurations is implemented, then users receive timely notifications, but energy consumption and processing load increase
Solution Approach 1:
The patent implements periodic action by having the broadcast system transmit the reconfiguration notification field at regular intervals in the MCI. Terminals only need to check this field periodically rather than continuously decoding FIC, achieving timely notification while significantly reducing energy consumption and processing load through event-driven updates based on version information changes.
Data Source
AI summary
A method for managing a digital multimedia broadcasting channel includes receiving a broadcast data frame that includes an occurrence change field, and performing a service update responsive to reconfiguration version data defined within the occurrence change field. Alternatively, the method includes transmitting a broadcast data frame that includes an occurrence change field, and causing a receiving terminal to perform a service update for a new channel responsive to reconfiguration version data defined within the occurrence change field. A digital multimedia broadcast terminal includes a receiver for receiving a broadcast data frame that includes an occurrence change field, and a controller configured to generate a control signal causing a service update responsive to reconfiguration version data defined within the occurrence change field.