Flow Change Configuration Count Synchronization in Base Station Handovers
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Solution Overview
Problem
In communication systems, the management of flow information between a mobile station and a base station during handovers can lead to discrepancies, causing communication issues due to differences in flow information configuration counts between the serving and target base stations.
Innovation Solution
A method and apparatus for managing flow information by exchanging Flow Change Configuration Count (FCCC) values between mobile stations and base stations, including the transmission of ranging request and response messages with validity indicators to identify and synchronize discordant FCCC values, ensuring accurate flow information management during handovers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flow information is dynamically managed during handover, then service adaptability is improved, but flow information consistency deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the mobile station sends FCCC values to the target base station, which then compares these values with its own records and sends back validity indicators. This feedback loop ensures that flow information consistency is maintained during handover by allowing the target base station to identify and request updates for any discordant flow information, thus resolving the contradiction between dynamic service adaptation and information consistency.
2Reliability
If FCCC values are exchanged during ranging, then flow information consistency is improved, but message complexity increases
Solution Approach 1:
The patent merges the FCCC value exchange process with the existing ranging procedure. The mobile station includes FCCC values in the ranging request message, and the target base station includes validity indicators in the ranging response message. By combining these functions into existing messaging structures rather than creating separate communication protocols, the patent improves flow information consistency without significantly increasing message complexity.
3Measurement precision
If validity indicators are used to identify discordant FCCC values, then flow information accuracy is improved, but processing overhead increases
Solution Approach 1:
The patent extracts only the essential validity indicator information from the full flow information comparison process. Instead of transmitting or processing complete flow information sets, the system uses compact validity indicators that simply indicate whether FCCC values are discordant. This extraction approach improves flow information accuracy while minimizing processing overhead by focusing only on the critical consistency-checking function.
Data Source
AI summary
A method for managing flow information of a mobile station by a target base station in a communication system is provided. The method includes receiving a ranging request message, which includes a flow identifier for each of flows between a serving base station and the mobile station and a change count indicating the number of times of an addition/change/deletion operation of a corresponding flow for each of flow identifiers, from the mobile station; and transmitting a ranging response message, which includes a validity indicator indicating whether the change count of each of the flow identifiers is valid or not, to the mobile station, wherein, when the validity indicator indicates that at least one change count among change counts for each of the flow identifiers is not valid, the ranging response message includes a list including the at least one change count that is not valid.