Inter-eNB CA Bearer Split Signaling Overhead Reduction
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Solution Overview
Problem
In LTE networks, the overhead for signaling is high when a radio base station determines to execute 'Bearer split' in 'Inter-eNB CA', as it needs to notify the mobile station of all configuration details for establishing a new bearer, leading to inefficiencies.
Innovation Solution
The method involves a radio base station transmitting an identifier and a 'Config copy indication' to the mobile station, instructing it to replicate the configuration of an existing bearer, allowing the mobile station to establish a new bearer with the same configuration, thereby reducing the need to transmit all configuration details.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the radio base station transmits all configuration details for establishing a new bearer, then the mobile station can establish the bearer correctly, but the signaling overhead increases
Solution Approach 1:
The patent applies the copying principle by having the mobile station replicate the configuration of an existing bearer (bearer #1) to establish a new bearer (bearer #2). Instead of transmitting the complete configuration details again, the base station only needs to indicate that the new bearer should copy the existing configuration, significantly reducing signaling overhead while ensuring configuration accuracy.
Solution Approach 2:
The patent extracts only the essential information needed for bearer establishment - specifically the bearer identifier and a copy indication flag - from the complete configuration set. This extraction approach allows the system to establish bearers with minimal signaling by separating the critical identification elements from the detailed configuration parameters that can be inherited through copying.
2Manufacturing precision
If the radio base station transmits all configuration details for establishing a new bearer, then the configuration can be complete and accurate, but the operational efficiency decreases
Solution Approach 1:
By implementing the copying mechanism, the system maintains configuration accuracy through replication of proven working configurations while dramatically improving operational efficiency. The mobile station can quickly establish new bearers by copying existing configurations rather than processing complete configuration transmissions, thus enhancing productivity without sacrificing precision.
Solution Approach 2:
The patent applies preliminary action by pre-establishing configuration templates through initial bearer setup. Once a bearer configuration is established and validated, it serves as a reusable template for future bearers, allowing the system to prepare configuration patterns in advance and apply them efficiently when new bearers are needed, thereby improving operational speed while maintaining accuracy.
Data Source
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AI summary
An overhead for signaling in starting "Bearer split" in "Inter-eNB CA" is reduced. A mobile communication method according to the present invention includes the steps of: transmitting, a first radio base station eNB#1, an identifier of a radio base station eNB#2 and "Config copy indication", to a mobile station UE, "Config copy indication" instructing the mobile station UE to replicate "configuration" of a bearer #1, when the radio base station eNB#1 in a state where the bearer #1 is established with the mobile station UE determines to establish a bearer #2 between the mobile station UE and the radio base station eNB#2; and establishing, by the mobile station UE, the bearer #2 having the same "configuration" with "configuration" of the bearer #1 between the radio base station eNB#2 and the mobile station UE in accordance with the identifier of the radio base station eNB#2 and "Config copy indication".