Direct Tunneling in Point-to-Multipoint Mobile Service
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Solution Overview
Problem
Current LTE network architectures for point-to-multipoint services, such as eMBMS, face complexity and latency issues due to multiple layers of control plane messaging and the need for an MBMS-GW, which complicates routing and resource management, especially in scenarios with network failures or resource constraints.
Innovation Solution
The solution involves collapsing the MBMS-GW's control plane functionality into the BM-SC or MME using GTP v2-C interfaces and collapsing the user plane functionality into the BM-SC or eNB, enabling direct tunnel multicast from BM-SC to eNB via GTP v1-U interfaces, thereby simplifying the network architecture and reducing routing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional LTE network architecture with MBMS-GW is used for point-to-multipoint services, then service delivery is established, but network architecture complexity increases and routing latency increases
Solution Approach 1:
The patent extracts and removes the MBMS-GW entity from the network architecture. By eliminating this intermediate gateway component, the system achieves direct tunneling between the broadcast-multipoint service code (BM-SC) and evolved Node B (eNB), thereby reducing network architecture complexity while maintaining service delivery capability
Solution Approach 2:
The patent merges the control plane functionality of the MBMS-GW into the BM-SC and MME, and consolidates the user plane functionality directly into the BM-SC to eNB tunnel. This merging eliminates the need for separate MBMS-GW control plane interfaces (SGmb) and simplifies the overall architecture
2Reliability
If traditional LTE network architecture with multiple control plane messaging layers is used, then service establishment is achieved, but routing latency increases
Solution Approach 1:
The patent extracts and eliminates the intermediate MBMS-GW entity that causes multiple messaging hops. By establishing direct control plane communication between BM-SC and MME, and direct user plane tunneling to eNB, the system reduces the number of messaging layers and interface crossings, thereby reducing routing latency while maintaining service establishment reliability
3Ease of operation
If MBMS-GW is used for controlling user plane and control plane, then service management is achieved, but capital expenditure and operational expenditure increase
Solution Approach 1:
The patent extracts and removes the MBMS-GW infrastructure requirement. By implementing direct tunneling architecture where BM-SC communicates directly with MME and eNB using existing interfaces (Sm for control plane, M1 for user plane), the system eliminates the need for additional MBMS-GW hardware and software, thereby reducing both capital expenditure (CAPEX) and operational expenditure (OPEX) while maintaining service management capability through existing network elements
Data Source
AI summary
Aspects of the subject disclosure may include, for example, a device, process or software that receives data for distribution to a multiple mobile devices, wherein the distribution is via a data dissemination service. A request is sent to a core network element over a control signaling interface to establish a wireless bearer service. The wireless bearer service can be used to wirelessly distribute the data to the multiple mobile devices via a radio access node. A confirmation is received of the establishment of the wireless bearer service, and the mobile user service is announced over the wireless bearer service. The data is forwarded to the radio access node via a wireless terrestrial bearer of the wireless bearer service, wherein the radio access node wirelessly distributes the data to the number of mobile devices via the mobile user service over a common radio channel. Other embodiments are disclosed.