Core Device Route Switching for Base Station Data Loss
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Solution Overview
Problem
The existing mobile bearer network experiences significant data loss due to the lengthy negotiation time required for the standby core device to establish a connection during faults, as it needs to perform MLPPP negotiation with the base station, causing disruptions in data transmission between the base station and the base station controller.
Innovation Solution
The method involves generating an active route between network elements, sending identity and state information to the standby core device to create a standby route, and switching data transmission to this route when a fault occurs, eliminating the need for the standby core device to perform MLPPP negotiation, thereby reducing data loss and negotiation time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the standby core device performs MLPPP negotiation with the base station when a fault occurs, then the connection can be established, but the negotiation time is long and causes data loss
Solution Approach 1:
The standby core device pre-establishes a standby link with the base station before fault occurs, and pre-loads routing information. When a fault occurs on the active link, the standby device can immediately activate the pre-prepared standby route without performing MLPPP negotiation, thus reducing switchover time and data loss.
Solution Approach 2:
The patent applies different quality standards to different links: the active link requires full MLPPP negotiation for reliable connection establishment, while the standby link uses a simplified activation process without full negotiation, optimizing the trade-off between reliability and speed based on the specific role of each link.
2Reliability
If the standby core device performs MLPPP negotiation with the base station, then the standby route can be established, but data transmission is interrupted during negotiation
Solution Approach 1:
The standby route is prepared in advance with pre-configured routing information and pre-established physical links. When needed, the standby route can be activated immediately without interrupting ongoing data transmission on the active route, thus maintaining productivity while ensuring reliability.
Solution Approach 2:
The patent separates the route establishment process into two independent phases: preparation phase (configuring standby link and routing information without affecting active transmission) and activation phase (switching to standby route when needed). This segmentation allows data transmission to continue uninterrupted while preparing backup paths.
3Reliability
If the standby core device activates a link and performs MLPPP negotiation, then the connection is reliable, but the process is complex and time-consuming
Solution Approach 1:
The patent applies different complexity levels to different operational modes: full MLPPP negotiation is performed only when initially establishing the active connection to ensure reliability, while the standby link uses a simplified activation process with pre-configured parameters, reducing complexity for the backup scenario.
Solution Approach 2:
All complex negotiation parameters and routing information are pre-configured during system initialization or link establishment. When activation is needed, the pre-prepared configuration is simply applied without re-negotiation, thus maintaining reliability while reducing the complexity and time of the activation process.
Data Source
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AI summary
The present invention discloses a method and a device for transmitting data, and relates to the field of communications. The method includes: generating an active route between a first network element and a second network element, where the active route includes a first route between an active core device and the first network element and a second route between the active core device and the second network element, and transmitting data between the first network element and the second network element through the active route; sending an identity ID and a state of a first gateway interface that is connected to the first network element and is included in the active core device to a standby core device, so that the standby core device generates a standby route between the first network element and the second network element, where the standby route includes a third route between the standby core device and the first network element and a fourth route between the standby core device and the second network element; and when a fault occurs on the first route, transmitting the data between the first network element and the second network element through the standby route. In the present invention, a time for switching a route can be shortened, and loss of data transmitted between a base station and a base station controller can also be reduced.