RNC Relocation Maintaining SRB Data Flow Continuity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In mobile communication systems, relocation of a serving RNC leads to a disruption in data transfer paths, causing delays and inefficient use of bandwidth resources, as there is no mechanism to maintain correspondence information for SRB IDs and data flow IDs, resulting in the inability to continue existing communication modes post-relocation.
Innovation Solution
A mobile communication system that includes data communication processors and relocation processors in base station controllers, which record and manage correspondence information between SRB IDs and data flow IDs, allowing seamless transfer of this information during relocation, enabling continuous data communication by reporting and recording the correspondence information between serving and drift RNCs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If relocation of serving RNC is performed, then radio resource management flexibility is improved, but data transfer continuity is disrupted
Solution Approach 1:
The source RNC transmits correspondence information between SRB IDs and data flow IDs to the target RNC before the relocation is completed. This preliminary transmission ensures that the target RNC already has the necessary mapping information when it becomes the serving RNC, thereby maintaining data transfer continuity during the handover process.
Solution Approach 2:
The correspondence information acts as an intermediary carrier that bridges the source RNC and target RNC during relocation. This information structure enables the target RNC to understand and continue the data flows that were managed by the source RNC, ensuring seamless transition without disrupting data transfer.
2Device complexity
If correspondence information is not maintained during relocation, then system complexity is reduced, but communication mode continuity is lost
Solution Approach 1:
The source RNC creates a copy of the correspondence information structure and transmits it to the target RNC. This copying mechanism allows the target RNC to reconstruct the mapping relationships without requiring complex real-time synchronization protocols, thus maintaining communication continuity while avoiding excessive system complexity.
3Adaptability or versatility
If data transfer path is changed during relocation, then resource allocation flexibility is improved, but bandwidth utilization efficiency deteriorates
Solution Approach 1:
The correspondence information is prepared and transmitted in advance before the data transfer path change is executed. This allows the target RNC to immediately resume efficient data transfer using the pre-established mapping relationships, avoiding bandwidth waste that would occur with re-establishment delays.
Data Source
AI summary
Radio base stations connect by radio lines with radio terminals in cells that make up each radio base station and relay data communication realized by the radio terminals on bearers on radio lines. Base station controllers record correspondence information of the data flow of data communication with the radio terminals and the bearers on the radio lines and, by referring to the correspondence information, effects termination of data communication with the radio terminals. When, in a state in which a drift base station controller relays and transfers data communication between radio base stations to which the radio terminals are connected and a serving base station controller, the serving base station controller is transferred to the drift base station controller, the plurality of base station controllers then report to the drift base station controller the correspondence information from the serving base station controller.