MBMS Paging Indicator Channel Segmentation for Power Reduction
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Solution Overview
Problem
The existing MBMS service's PI transmission mechanism is inefficient, leading to unnecessary battery power consumption and resource waste, as it was designed for individual UE transmissions rather than group paging, causing some UEs to receive unwanted paging messages.
Innovation Solution
A method is introduced where an RNC transmits a control message with a list of NI information for MBMS paging groups to a Node B, which establishes a physical channel to transmit MBMS notification Indicator Channels (MICH) to UEs, allowing UEs to monitor NI instead of PI, reducing unnecessary power consumption and optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the existing PI transmission mechanism is used for MBMS paging, then individual UE paging can be achieved, but unnecessary battery power consumption and resource waste occur due to group paging requirements
Solution Approach 1:
The patent segments the paging indicator transmission by introducing a separate MICH channel specifically for MBMS paging groups, distinct from the PICH channel used for individual UE paging. This segmentation allows the system to apply different transmission mechanisms tailored to each paging type, preventing individual UEs from consuming power to process group paging indicators intended for MBMS services they may not be subscribed to.
2Area of stationary object
If PI is transmitted to all UEs for MBMS paging, then group paging coverage is achieved, but some UEs receive unwanted paging messages
Solution Approach 1:
The patent introduces an intermediary filtering mechanism where the MICH channel carries paging indicators specifically for MBMS paging groups. UEs subscribe to specific MBMS services and receive paging indicators only for those services through the MICH channel, rather than receiving all paging indicators broadcast on the PICH channel. This intermediary mechanism ensures that UEs receive relevant paging information without being burdened by unwanted paging messages.
3Adaptability or versatility
If the existing PICH channel is used for MBMS paging indicators, then channel availability is maintained, but resource allocation efficiency decreases
Solution Approach 1:
The patent creates a specialized MICH channel that serves the specific function of carrying paging indicators for MBMS paging groups, while the existing PICH channel continues to serve individual UE paging. This multi-functionality approach allows the system to maintain the universality of the PICH channel for individual paging while adding a dedicated channel for group paging, thereby improving overall resource allocation efficiency without sacrificing channel availability.
Data Source
AI summary
A paging method for an MBMS service is provided. To efficiently transmit MBMS control information in an MBMS mobile communication system, an RNC transmits to a Node B a control message including a list of NI information for MBMS paging groups by the RNC and the Node B establishes a physical channel according to the control message and transmits an MICH including NIs to UEs on the established physical channel.