Gateway Preferential Treatment Notification in HNB Relocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is no existing means to notify a home node B (HNB) of a destination base station to preferentially treat a user equipment (UE) during intra HNB-GW relocation, resulting in the UE not receiving preferential treatment.
Innovation Solution
A mobile communication system and method where a gateway device determines, either independently or by querying a core network node, whether to preferentially treat a UE and notifies the target base station accordingly, ensuring the UE receives preferential treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gateway device determines preferential treatment for a moving terminal, then the terminal can receive preferential treatment at the target base station, but no notification mechanism exists to convey this information to the target base station
Solution Approach 1:
The gateway device serves as an intermediary between the core network and the target base station. It receives relocation requests from the source base station, determines whether preferential treatment should be applied by checking CSG membership information, and then includes this determination in the relocation request message forwarded to the target base station. This intermediary function resolves the information transmission gap.
2Measurement precision
If the gateway device checks CSG membership information to determine preferential treatment, then accurate preferential treatment can be provided, but additional processing time and complexity are introduced
Solution Approach 1:
The gateway device utilizes CSG membership information that is already available in its database from previous registration and authentication processes. Instead of requiring additional queries or external verification, the gateway self-services by checking the terminal's CSG membership status against its stored information, thereby accurately determining preferential treatment without introducing significant external complexity.
3Adaptability or versatility
If the gateway device includes preferential information in the relocation request message, then the target base station can treat the terminal preferentially, but the message structure becomes more complex
Solution Approach 1:
The gateway device merges the preferential treatment determination with the existing relocation request message structure. Instead of creating a separate notification message or modifying multiple message types, the gateway incorporates the preferential information (CSG membership status) directly into the relocation request message that is already being exchanged between base stations, thereby achieving adaptability without significant structural complexity.
Data Source
AI summary
A mobile communication system comprises: at least one terminal; a source base station to which the terminal is connected before movement of the terminal; a target base station to which the terminal is connected after the movement; a gateway device that connects the source base station and the target base station to a core network; and a core network node provided in the core network, wherein: the gateway device determines by itself, or makes query to the core network node to determine whether or not to preferentially treat the terminal by the target base station when the terminal moves from the source base station to the target base station; and the gateway device notifies to the target base station preferential information indicative of whether or not to preferentially treat the terminal by the target base station.