Network Element Aggregating USD for Multi-PLMN V2X Broadcast
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Solution Overview
Problem
In the 3GPP network, user equipment (UE) cannot receive broadcast services from non-serving Public Land Mobile Networks (PLMNs) when multiple PLMNs provide V2X services in the same area, due to the lack of support for LTE MBMS roaming.
Innovation Solution
A method where a network-side network element acquires and sends User Service Description (USD) information from multiple PLMNs to the UE, allowing it to access desired broadcast services across multiple PLMNs by establishing MBMS bearers, including MBSFN or SC-PTM bearers, enabling service reception from both serving and non-serving PLMNs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LTE MBMS does not support roaming, then network resource utilization is improved through single-cell MBMS, but UE cannot receive broadcast services from non-serve PLMN
Solution Approach 1:
The network-side network element is designed to acquire and forward USD information from multiple PLMNs to UE, enabling the system to serve both serve PLMN and non-serve PLMN broadcast services through a unified mechanism, thus achieving multi-PLMN accessibility without requiring separate roaming infrastructure
Solution Approach 2:
The network-side network element acts as an intermediary that collects USD information from multiple PLMNs and forwards it to UE, facilitating cross-PLMN service discovery and selection without requiring direct UE-to-non-serve PLMN connection, thereby solving the roaming limitation
2Adaptability or versatility
If UE receives USD information from multiple PLMNs, then service coverage is expanded, but network complexity increases
Solution Approach 1:
The patent combines the acquisition and forwarding of USD information from multiple PLMNs into a single network-side network element function, consolidating what would otherwise be multiple separate roaming procedures into one unified mechanism, thereby expanding service coverage while controlling network complexity
Data Source
AI summary
The present invention provides a method, device and system for transmitting broadcasting services, and a computer storage medium. The method comprises: a network side network element obtains user service description (USD) information in a plurality of PLMNs; the network side network element transmits the USD information to a user equipment (UE), wherein the USD information is used for instructing the UE to obtain required broadcasting services in the plurality of PLMNs.