Cross-PLMN MBS Measurement Reporting via Home Network Mediation
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Solution Overview
Problem
User equipment (UE) is unable to perform uplink transmission to a different public land mobile network (PLMN) while receiving multicast/broadcast services (MBS), hindering network optimization due to the PLMN's inability to grasp the radio environment.
Innovation Solution
The UE receives configuration information from its home PLMN to perform radio environmental measurements of the MBS broadcast from a different PLMN, and transmits measurement results back to its home PLMN, enabling network optimization by collecting and reporting measurement information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If user equipment receives broadcast services from a different PLMN without uplink transmission capability, then broadcast reception is enabled, but network optimization is hindered due to inability to report measurement information
Solution Approach 1:
The patent introduces a third party (home PLMN or network node) as an intermediary that receives measurement information from the user equipment and forwards it to the visited PLMN. This mediator enables the visited PLMN to obtain radio environmental data without requiring direct uplink transmission capability to the visited PLMN, thus resolving the contradiction between broadcast reception capability and measurement information reporting.
2Reliability
If user equipment performs radio environmental measurement and transmits measurement information to home PLMN, then network optimization is enabled, but device complexity increases due to additional measurement and transmission functions
Solution Approach 1:
The patent makes the user equipment perform multiple functions: receiving broadcast services, performing radio environmental measurements, and transmitting measurement information. By consolidating these functions into a single multi-functional approach, the patent avoids the need for separate dedicated measurement devices or complex infrastructure, thus improving network optimization while limiting the increase in device complexity.
Data Source
AI summary
A communication method is performed by a user equipment in a mobile communication system for providing multicast/broadcast services (MBS), the communication method including the steps of: receiving, from a first public land mobile network (PLMN), configuration information for configuring radio environmental measurement of broadcast reception from a second PLMN different from the first PLMN; performing the radio environmental measurement of the broadcast reception based on the configuration information when performing the broadcast reception from the second PLMN; and transmitting, to the first PLMN, measurement information including a measurement result of the radio environmental measurement.