MBMS Resumption via MCCH Notification
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Solution Overview
Problem
In the MBMS system, User Equipment (UE) cannot immediately detect the resumption of a suspended Multimedia Broadcast Multicast Service (MBMS) due to the lack of indication in MCCH notification messages, leading to delayed reception of the resumed service.
Innovation Solution
The network side actively sends an MCCH notification message to indicate changes in the MCCH message, allowing the UE to continuously read the MCCH and determine when the suspended MBMS service has been resumed, enabling immediate resumption of service reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the network side suspends an MBMS service and later resumes it without sending an MCCH notification message, then the network resource utilization is improved by allowing service suspension, but the UE cannot detect the service resumption in time, leading to delayed service reception
Solution Approach 1:
The network side performs a preliminary action by sending an MCCH notification message before the actual service resumption occurs. This notification prepares the UE in advance, indicating that the MCCH will be updated with service resumption information. By doing this preliminarily, the system ensures the UE is ready to detect and process the resumption information without delay when it becomes available.
Solution Approach 2:
The invention implements a feedback mechanism where the network side actively notifies the UE about MCCH changes through an MCCH notification message. This feedback loop allows the UE to know when to expect updated service information, enabling timely detection of service resumption status without requiring continuous monitoring or guessing, thus resolving the detection delay problem while maintaining efficient resource utilization.
2Reliability
If the UE continuously monitors the MCCH message to detect service resumption, then the UE can detect service changes in time, but the power consumption increases due to continuous monitoring
Solution Approach 1:
Instead of continuous monitoring, the UE performs periodic monitoring of the MCCH message based on notifications from the network side. The network sends MCCH notification messages that trigger the UE to read the MCCH at specific intervals. This periodic action pattern maintains reliable service resumption detection while significantly reducing power consumption compared to continuous monitoring, as the UE can enter low-power states between notification-triggered reading events.
3Device complexity
If the MCCH notification message does not include service resumption indication, then the message format remains simple and backward compatible, but the UE cannot distinguish service resumption from other MCCH changes
Solution Approach 1:
The MCCH notification message is segmented into distinct fields, with a specific bit or field dedicated to indicating service resumption status. This segmentation allows the notification message to convey precise information about what type of change is occurring in the MCCH. By dividing the notification into specific indicator components, the system maintains relatively simple message structure while enabling the UE to clearly distinguish service resumption from other types of MCCH changes, thus preventing information loss without excessive complexity.
Data Source
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AI summary
The invention discloses a method for determining the resumption of a suspended Multimedia Broadcast Multicast Service (MBMS), which comprises: when the MBMS service is intended to be resumed after being suspended, triggering a network side to send an MBMS Control Channel (MCCH) notification message for indicating a change of an MCCH message; determining, by User Equipment (UE), that the suspended MBMS service is resumed by reading the MCCH notification message and a changed MCCH message. The invention also provides a device and a UE for determining the resumption of an MBMS. The technical solution of the invention provides a better supplement for reception of an MBMS service in a present MBMS system, and further improves Quality of Service (QoS) of the MBMS system and a UE user's experience.