5G Bearer Setup via Direct Core Network Tunnel
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Solution Overview
Problem
The existing 5G network bearer setup method involving a non-ideal backhaul interface X5 causes additional latency and bandwidth issues due to the need to connect to a 4G base station via a new radio access technology base station, leading to suboptimal data transmission performance.
Innovation Solution
A method where a first base station receives a bearer setup request, sends a tunnel endpoint to a core network device, and receives another tunnel endpoint in return, allowing direct bearer setup between the base station and the core network without the need for intermediate connections via the new interface X5, thereby reducing latency and conserving bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the NR BS connects to the 4G core network via the 4G base station using the new interface X5, then the 5G new RAT can be implemented with dual connectivity support, but additional latency is introduced due to the non-ideal backhaul interface
Solution Approach 1:
The patent introduces a direct interface between the NR BS and the 4G core network, bypassing the 4G base station as an intermediary for certain data paths. This allows dual connectivity functionality to be maintained while eliminating the backhaul latency introduced by routing all traffic through the 4G base station.
Solution Approach 2:
The patent segments the data transmission paths into multiple routes: one path through the 4G base station for control signaling and another direct path from the NR BS to the 4G core network for user data. This segmentation allows optimized routing that reduces latency for data transmission while maintaining the dual connectivity architecture.
2Adaptability or versatility
If the NR BS uses the non-ideal backhaul interface X5 to connect to the 4G base station, then the network architecture supports evolution from 4G to 5G, but bandwidth is consumed by the backhaul link
Solution Approach 1:
The patent establishes a direct connection between the NR BS and the 4G core network, reducing the reliance on the 4G base station as a mandatory intermediary. This architecture allows user data to bypass the backhaul interface, conserving backhaul bandwidth while maintaining network evolution capabilities.
Solution Approach 2:
The patent divides the network traffic into control plane traffic (which still routes through the 4G base station for backward compatibility) and user plane traffic (which can take a direct path from NR BS to the core network). This segmentation reduces bandwidth consumption on the backhaul link by routing only essential control signaling through it.
3Ease of operation
If the existing bearer setup method is used with the new interface X5, then the NR BS can transmit data through the 4G base station, but the process causes additional latency and suboptimal data transmission performance
Solution Approach 1:
The patent introduces a direct bearer path from the NR BS to the 4G core network, eliminating the 4G base station as a mandatory intermediary for user data transmission. This maintains the ease of operation for data transmission while significantly reducing the latency caused by the additional hop through the backhaul interface.
Solution Approach 2:
The patent implements dynamic path selection for data transmission, allowing the system to choose between routing data through the 4G base station or directly to the core network based on current network conditions. This dynamic approach optimizes transmission performance by selecting the lower-latency path when available.
Data Source
AI summary
Embodiments of the present disclosure disclose a bearer setup method, a related apparatus, and a system. A first base station receives a first bearer setup request message initiated by UE; sends a first tunnel endpoint to a core network device, where the first tunnel endpoint includes a first TEID and a first transport layer address, and the first tunnel endpoint is allocated by the first base station; receives a second tunnel endpoint sent by the core network device, where the second tunnel endpoint includes a second TEID and a second transport layer address, and the second tunnel endpoint is allocated by the core network device; and completes setup of the first bearer with the core network device, for transmitting uplink data and transmitting downlink data.