MBMS UE Location-Aware MCCH Reading to Reduce Power
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Solution Overview
Problem
In Multimedia Broadcast Multicast Services (MBMS), User Equipment (UE) wastes power by periodically checking for MCCH information change notifications and reading MCCH information for MBMS services it is not interested in, as its service area does not cover the Multicast Broadcast Single Frequency Network (MBSFN) area where it is located, resulting in irrelevant data reception.
Innovation Solution
A method and apparatus that acquire and notify UE of location area information for MBMS service distribution, allowing UE to compare its location with the service area and determine whether to read MCCH and MCCH information change notifications, thereby saving power by only reading relevant information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE periodically checks MCCH information change notification and reads MCCH for all MBMS services, then UE ensures it does not miss any MBMS service information, but UE consumes excessive power by receiving irrelevant data for services outside its coverage area
Solution Approach 1:
The patent applies local quality by making the MCCH reading behavior location-dependent. The network provides service area information to the UE, and the UE determines whether to read MCCH based on its current location relative to the service area. This resolves the contradiction by making the UE read MCCH only when located within the service area (maintaining reliability) and skip reading when outside (reducing power consumption).
Solution Approach 2:
The patent applies preliminary action by having the network provide service area information to the UE in advance through system information blocks or dedicated signaling. The UE uses this pre-provided information to make informed decisions about whether to read MCCH, avoiding unnecessary power consumption before entering the service area while ensuring reliable reception when inside.
2Loss of information
If UE reads MCCH information for all MBMS services, then UE has complete information about all services, but UE receives irrelevant data for services it cannot access due to coverage limitations
Solution Approach 1:
The patent makes information acquisition location-dependent. The UE determines its location relative to the service area and selectively reads MCCH only when within the service area. This ensures the UE obtains complete information about services it can actually access (avoiding information loss for relevant services) while avoiding waste of energy on services outside its coverage area.
Solution Approach 2:
The patent applies partial action by having the UE perform MCCH reading only partially - specifically, only when located within the service area. This is sufficient to obtain all necessary information for services the UE can access, while avoiding the excessive action of reading MCCH continuously or for all services regardless of location, thus reducing energy waste.
3Speed
If UE continuously monitors MCCH information change notification, then UE quickly accesses new MBMS services, but UE cannot distinguish between relevant and irrelevant service information when outside service area
Solution Approach 1:
The patent applies local quality by making the MCCH monitoring behavior location-dependent. The network provides service area information to the UE, enabling it to distinguish between relevant and irrelevant service information based on its current location. When inside the service area, the UE monitors MCCH for quick service access; when outside, it skips monitoring to avoid processing irrelevant information.
Data Source
AI summary
Embodiments of the present invention provide a method and apparatus for performing MBMS service communications and a method and apparatus for receiving an MBMS service. Specifically, there is provided a method for performing MBMS service communications, comprising acquiring location area information of an MBMS service distribution; and notifying a UE of the location area information of the MBMS service distribution. Further, there is provided a method for receiving an MBMS service, comprising receiving location area information of an MBMS service distribution; comparing location information of a UE with the location area information of the MBMS service distribution; and determining whether to read an MCCH and MCCH information change notification based on a comparison result.