5G Base Station MBS Tunnel Configuration
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing multicast and broadcast services (MBS) in 5G NR networks, particularly in configuring and transmitting MBS data packets from a core network to multiple user equipment (UEs) via a shared tunnel, with unclear processes for base stations to receive and transmit MBS data packets.
Innovation Solution
The implementation of a method where a core network and a base station communicate MBS traffic through a shared tunnel, with the base station generating and providing configuration, such as an IP address and Tunnel Endpoint Identifier (TEID), in response to requests from the core network, allowing for efficient transmission of MBS data to multiple UEs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a shared tunnel is established for MBS data transmission from core network to multiple UEs via base station, then transmission efficiency and scalability are improved, but the complexity of tunnel configuration and management increases
Solution Approach 1:
The base station acts as an intermediary between the core network and multiple UEs, establishing a shared tunnel that mediates MBS data transmission. The base station receives configuration requests from the core network, generates local tunnel configurations, and manages the distribution of MBS data to multiple UEs, thereby simplifying the overall system architecture while improving transmission efficiency
Solution Approach 2:
The shared tunnel configuration enables the base station to serve multiple UEs simultaneously with a single tunnel infrastructure. The same tunnel can be used for different MBS services and multiple receiving UEs, making the tunnel configuration universal and multi-functional, which improves productivity without proportionally increasing complexity
2Adaptability or versatility
If base station generates and provides tunnel configuration (IP address, TEID) in response to core network requests, then flexibility and adaptability of MBS service deployment are improved, but the signaling overhead and processing time increase
Solution Approach 1:
The base station pre-generates tunnel configuration parameters (IP address, TEID) and maintains them in a ready state before actual MBS data transmission begins. When the core network sends a configuration request, the base station can quickly provide pre-prepared configuration information, reducing the signaling time and processing delay while maintaining deployment flexibility
Solution Approach 2:
The base station dynamically adjusts tunnel configuration parameters based on specific MBS service requirements and network conditions. By changing parameters such as IP addresses and TEIDs according to different service scenarios, the system achieves high adaptability while the parameter changes are managed through efficient signaling procedures that minimize time loss
3Loss of energy
If point-to-multipoint transmission is implemented for MBS services, then resource utilization and network efficiency are improved, but the reliability and quality of service delivery to individual UEs may deteriorate
Solution Approach 1:
The MBS data transmission is segmented into two parts: a shared point-to-multipoint tunnel for efficient bulk data delivery from the core network to the base station, and individual point-to-point radio bearers from the base station to each UE. This segmentation allows the system to benefit from both P2MP resource efficiency and P2P service reliability, as each UE receives data through its own dedicated radio bearer while sharing the backhaul tunnel
Solution Approach 2:
The patent combines point-to-multipoint and point-to-point transmission modes in a hybrid architecture. The backhaul connection uses P2MP for efficient resource utilization, while the access connection uses P2P for reliable service delivery. This merging of transmission modes allows the system to achieve both improved resource utilization and maintained service reliability
Data Source
AI summary
To manage transmission of multicast and/or broadcast services (MBS), a base station receives, from a core network (CN), a request to configure a common tunnel associated with an MBS session, via which the base station is to receive MBS data, from the CN, for wireless transmission to multiple user equipment (UEs) (1902). In response to the request, the base station transmits, to the CN, a configuration of the common tunnel (1904).