Idle UE MBMS Status Reporting via RRC Signaling
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Solution Overview
Problem
Current systems lack a simple and effective mechanism to gain awareness about idle UEs receiving or having received MBMS services, which is essential for network operation and audience measurement, but requires UEs to be in RRC_Connected state for explicit counting, burdening the UE and using air interface resources.
Innovation Solution
A new information element (IE) for MBMS status information is defined and embedded in UE-originated messages during network control signaling procedures, allowing idle UEs to report service usage when transitioning to the active state, thereby enabling efficient audience monitoring without explicit counting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If explicit counting mechanism is used for idle UEs, then audience measurement accuracy is improved, but UE operational complexity and air interface resource consumption increase
Solution Approach 1:
The UE autonomously tracks and stores MBMS service reception status information locally without requiring network-initiated counting procedures. When transitioning to connected state, the UE automatically reports accumulated status information, eliminating the need for explicit network counting commands and reducing operational complexity.
Solution Approach 2:
The UE performs preliminary tracking and storage of MBMS service status information while in idle state, so that when connection is established, the information is already prepared and can be reported immediately without requiring complex real-time counting procedures.
2Loss of information
If explicit counting procedure is implemented for idle UEs, then MBMS service awareness is improved, but air interface resource consumption increases
Solution Approach 1:
The UE independently maintains service status information and initiates reporting when transitioning to connected state, eliminating the need for network-initiated counting procedures that would consume additional air interface resources.
Solution Approach 2:
Service status information is tracked and stored in advance by the UE during idle state, so that reporting can occur immediately upon connection establishment without requiring additional air interface resources for real-time counting procedures.
3Loss of information
If RACH procedure is required for idle UEs to report MBMS status, then network awareness is improved, but time consumption and procedural complexity increase
Solution Approach 1:
The UE performs preliminary tracking and storage of MBMS service status information during idle state, so that when transitioning to connected state, the information is already prepared and can be reported immediately as part of the normal connection establishment procedure, eliminating additional time-consuming RACH procedures.
Data Source
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AI summary
A simple and effective mechanism is shown to determine and utilize information about idle user equipment which received MBMS services for purposes of audience monitoring. The implementation can be done by defining a new information element (IE) for a proposed MBMS status information and embedding the new IE into a UE-originated message of a network control signaling procedure, e.g., RRC Connection Request which may be sent at the convenience of the UE when it transitions from the idle state to the active state for its own purposes, i.e., purposes primarily other than audience monitoring.