UE Policy Delivery of 5G Multicast Service Information
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Solution Overview
Problem
Existing technologies face challenges in ensuring user equipment (UE) can efficiently obtain multicast and broadcast service (MBS) information to join corresponding sessions, leading to inefficiencies and resource wastage.
Innovation Solution
A communication method and apparatus are introduced to utilize the UE policy mechanism in 5G networks to standardize the transmission of MBS service information to UE, including data set identifiers and keywords for multicast/broadcast addresses, network slice information, and session identifiers, enabling standardized discovery and notification of MBS services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MBS service information is transmitted to UE using non-standardized methods, then UE can obtain service information, but development costs and testing costs of UE increase
Solution Approach 1:
The patent applies universality by using the existing UE policy mechanism, which was originally designed for unicast services, to also handle multicast and broadcast service information transmission. This allows the same standardized policy control framework to serve multiple service types (unicast, multicast, broadcast), reducing the need for separate proprietary mechanisms and thereby lowering UE development and testing costs while ensuring reliable information delivery.
Solution Approach 2:
The patent changes the parameters of the existing UE policy mechanism to accommodate MBS services. Specifically, it extends the policy control framework to include multicast/broadcast address parameters, network slice information, and session identifiers within the UE policy data structure. This parameter extension allows standardized transmission of MBS service information without requiring a completely new mechanism, thus reducing implementation complexity and costs.
2Loss of time
If UE continuously monitors for MBS service information, then service information can be obtained promptly, but power consumption increases
Solution Approach 1:
The patent applies self-service by enabling the network side (PCF and UDR) to automatically push MBS service information to UE when it becomes available, rather than requiring UE to continuously monitor and query for updates. The PCF subscribes to MBS service data in the UDR and receives push notifications, which are then forwarded to UE. This eliminates the need for continuous UE monitoring, significantly reducing power consumption while ensuring timely information delivery.
Solution Approach 2:
The patent implements preliminary action by having the PCF subscribe to MBS service information in advance from the UDR before UE needs it. When MBS service data becomes available in the network, the PCF is already positioned to receive push notifications immediately and forward them to UE. This pre-positioning of the subscription mechanism ensures rapid information delivery without requiring UE to actively search or continuously monitor, thereby reducing energy consumption.
Data Source
AI summary
This application provide a communication method for a multicast and broadcast service (MBS) performed by an electronic device. The method includes: receiving a data management creation/update request transmitted by a network exposure function, the request including a data set identifier used for indicating a user equipment policy, a data subset identifier used for indicating that a data type is an MBS service, a data keyword used for indicating a multicast/broadcast address, a data sub-keyword used for indicating network slice information and a data network name or used for indicating an MBS session identifier, and a data set used for indicating MBS service data; transmitting a DM creation/update response to the NEF; and transmitting a DM notification request to a policy control function, the DM notification request being used for causing the PCF to transmit, to the UE, policy information of which a UE policy type is an MBS service.