LTE Base Station SON Capability Exchange to Reduce X2AP Signaling
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Solution Overview
Problem
In mixed vendor environments, the use of Distributed and Centralized SON in LTE systems leads to excessive X2AP-message signaling, causing congestion and instability due to the lack of information about neighboring eNBs' SON solutions, resulting in unnecessary notifications and increased processing loads.
Innovation Solution
A communication system where base stations transmit information about their SON implementation methods, allowing neighboring stations to determine whether to send autonomous setting information, thereby reducing unnecessary X2AP-message transmissions by identifying supported SON functions and their implementation nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If base stations transmit autonomous setting information to neighboring base stations, then network optimization can be achieved, but excessive signaling causes congestion and instability
Solution Approach 1:
The patent applies preliminary action by having base stations exchange SON solution capability information in advance during initial connection establishment. This allows neighboring base stations to know each other's SON implementation methods before actual autonomous setting operations occur, enabling them to filter out unnecessary notifications later and reduce signaling congestion.
Solution Approach 2:
The patent segments the SON function information into specific categories (Centralized SON vs. Distributed SON implementation methods). By dividing the information exchange into structured segments about capability indicators and sonSolutionTypes, the system can efficiently match compatible base stations and reduce unnecessary full-information transmissions.
2Productivity
If base stations send notifications for every SON function change, then real-time optimization is achieved, but processing load increases causing instability
Solution Approach 1:
The patent applies preliminary action by pre-exchanging capability information so that base stations can later filter notifications based on compatibility. This preliminary setup enables real-time optimization to proceed efficiently without overwhelming processing loads, as each base station only processes relevant updates from compatible neighbors.
Solution Approach 2:
The patent implements partial action by having base stations transmit only the specific SON solution type information they need (Centralized or Distributed SON indicators) rather than complete configuration details. This partial information exchange is sufficient for compatibility determination and reduces the processing burden while maintaining real-time optimization capability.
3Adaptability or versatility
If all base stations implement the same SON solution, then interoperability is simplified, but adaptability to different vendor implementations is reduced
Solution Approach 1:
The patent applies universality by creating a standardized capability indication mechanism that works across different vendor implementations. Both Centralized and Distributed SON approaches are accommodated through a universal information exchange framework using sonSolutionTypes and capability indicators, allowing diverse base stations to interoperate without requiring identical SON implementations.
Solution Approach 2:
The patent uses preliminary action to establish compatibility awareness before operations begin. By exchanging SON solution type information in advance, base stations from different vendors can identify compatible neighbors and adjust their notification behaviors accordingly, simplifying interoperability while maintaining adaptability to various implementation approaches.
Data Source
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AI summary
An object is to provide a communication system, a base station apparatus, a data transmission method, and a program in which unnecessary signalings do not occur in a large quantity as a result of the execution of a SON function. A communication system according to the present invention includes an eNB (100) and an eNB (101) that performs data transmission/reception with the eNB (100), in which the eNB (100) includes a signal transmission/reception unit (1102) that transmits information to the eNB (101), the information being used to determine whether or not autonomous setting information should be transmitted from the eNB (101) to the eNB (100).