MBMS Service Information Acquisition in Wireless Terminals
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Solution Overview
Problem
In wireless communications systems, user equipment (UE) executing the MCCH acquisition procedure for MBMS services even when not activated results in unnecessary power consumption and resource waste, as all UEs, regardless of their RRC state, are required to perform this procedure in specific situations.
Innovation Solution
A method and apparatus that determine the activation state of point-to-multipoint (p-t-m) MBMS services before executing the MCCH acquisition procedure, ensuring the procedure is only executed if at least one p-t-m MBMS service is confirmed activated, thereby preventing unnecessary resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all user equipment executes the MCCH acquisition procedure regardless of RRC state, then MBMS service information can be acquired, but power consumption and resource waste increase
Solution Approach 1:
The patent applies dynamics by making the MCCH acquisition procedure conditional rather than static. The UE dynamically determines whether to execute the acquisition procedure based on its current RRC state and activation status of MBMS services. This conditional execution mechanism allows the system to adapt between full acquisition (when needed) and skipped acquisition (when not needed), resolving the contradiction between reliable information acquisition and power consumption.
Solution Approach 2:
The patent applies local quality by differentiating the acquisition behavior based on specific RRC states and service activation conditions. Different UEs or the same UE at different states perform different actions: some execute acquisition while others skip it. This localized differentiation ensures that only UEs with activated MBMS services in appropriate RRC states perform the acquisition procedure, reducing overall power consumption while maintaining service reliability for active users.
2Reliability
If all user equipment executes the MCCH acquisition procedure regardless of RRC state, then MBMS service information can be acquired, but system resources are wasted
Solution Approach 1:
The patent makes system resource utilization dynamic by conditioning MCCH acquisition on RRC state and service activation status. The system transitions from a static model where all UEs always acquire MCCH to a dynamic model where acquisition occurs only when necessary. This improves overall system productivity by reducing redundant processing and resource consumption from inactive UEs while maintaining information acquisition capability for active services.
Solution Approach 2:
The patent applies local quality by enabling MCCH acquisition only in specific local contexts (specific RRC states with activated MBMS services) rather than universally. This localized approach optimizes system resource utilization by concentrating acquisition activities only where needed, preventing resource waste from inactive UEs while ensuring reliable information delivery to active service recipients.
3Use of energy by moving object
If the MCCH acquisition procedure is executed only when MBMS services are activated, then power consumption is reduced, but service information acquisition may be missed
Solution Approach 1:
The patent applies preliminary action by having the UE check its RRC state and MBMS service activation status before executing the MCCH acquisition procedure. This preliminary determination ensures that the UE only skips acquisition when it is safe to do so (inactive state), while still acquiring information when activated. This preliminary check mechanism maintains reliability for active services while enabling power savings for inactive ones.
Solution Approach 2:
The patent uses feedback from the UE's internal state (RRC state and service activation status) to control the acquisition behavior. The UE continuously monitors its own activation state and uses this feedback to determine whether to perform acquisition. This feedback mechanism ensures that acquisition is not skipped when services are actually active, maintaining reliability while allowing skips when truly inactive, thus balancing power consumption and service acquisition.
Data Source
AI summary
In order to prevent a receiving terminal from wasting system resource and power, the present invention provides a method of acquiring point-to-multipoint MBMS service information for the receiving terminal in a wireless communications system. The method includes the following steps of determining an activation state of MBMS services in the receiving terminal before the receiving terminal performs an MBMS point-to-multipoint Control Channel (MCCH) acquisition procedure, and performing the MCCH acquisition procedure by the receiving terminal if at least one MBMS service has been determined activated.