Multicast Broadcast Service Connection Establishment Timing
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Solution Overview
Problem
Current multicast broadcast service (MBS) systems lack a method to determine when an MBS receiving device starts to receive the service, making it difficult to accurately bill for the service.
Innovation Solution
A method for an MBS transmitting device to establish a connection with an MBS receiving device using a connection establishment message, which includes determining the MBS reception start time based on whether the receiving device receives MBS immediately or not, with options for a timer expiration or an MBS report message to set the start time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the MBS connection is established using DSx messages, then the MBS connection can be set up, but the MBS reception start time cannot be determined accurately
Solution Approach 1:
The connection establishment process is segmented into multiple phases: capability exchange using registration request/response messages, connection establishment using connection establishment messages, and service activation. This segmentation allows the system to separately handle connection setup and service start time determination, enabling accurate billing by identifying when the receiving device actually starts receiving MBS service.
Solution Approach 2:
The patent introduces preliminary capability exchange messages (registration request and response) before the actual connection establishment. These preliminary messages allow the transmitting device to determine in advance whether the receiving device will start receiving MBS immediately or after a delay, enabling accurate billing preparation before service delivery begins.
2Ease of operation
If the MBS receiving device does not receive MBS immediately after connection establishment, then the device can prepare for reception, but the transmitting device cannot determine when billing should start
Solution Approach 1:
The patent implements a feedback mechanism where the receiving device sends an MBS report message to the transmitting device to indicate when it starts receiving MBS service. This feedback loop allows the transmitting device to accurately determine the MBS reception start time for billing purposes, eliminating the time loss caused by uncertain service activation timing.
3Measurement precision
If multiple methods are used to determine MBS reception start time, then accurate billing is enabled, but the system complexity increases
Solution Approach 1:
The patent introduces dynamic parameters including action codes and timers that adapt to different service delivery scenarios. The action code in connection establishment messages dynamically indicates whether the receiving device will start receiving MBS immediately or after timer expiration, allowing the system to flexibly handle different operational modes without requiring separate rigid protocols for each case.
Data Source
AI summary
A multicast broadcast service (MBS) receiving device establishes an MBS connection with an MBS transmitting device through a connection establishment message. When it is determined to receive MBS right after establishing the MBS connection, the MBS receiving device starts to receive the MBS right after establishing the MBS connection. When it is determined to not receive MBS right after establishing the MBS connection, the MBS receiving device transmits an MBS report message to the MBS transmitting device and then starts to receive the MBS.