HGW-Triggered User Relocation in Home NodeB Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current Home NodeB (HNB) systems lack a user relocation procedure triggered by the Home NodeB Gateway (HGW), which is necessary for new scenarios such as HGW reset, severe uplink service quality degradation, and user removal from the access control list, leading to inadequate service continuity and quality.
Innovation Solution
A method for user relocation triggered by the HGW, where the HGW transmits a relocation request message to the HNB, initiating a relocation process to another NodeB, and the HNB responds with a relocation response message, enhancing the Iu-h interface and facilitating service continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional UE measurement report triggered relocation procedure is used, then the relocation can be performed based on radio conditions, but the system cannot respond to HGW reset, severe uplink service quality degradation, or user removal from access control list scenarios
Solution Approach 1:
Instead of having the UE or HNB initiate relocation based on measurement reports, the invention inverts the initiation source to the HGW, which sends relocation requests to the HNB for scenarios including HGW reset, severe uplink service quality degradation, and user removal from access control list. This allows the system to respond to upper-layer node events that were previously unaddressable.
2Reliability
If the HGW initiates relocation for new scenarios, then service continuity can be improved in reset and ACL update scenarios, but the Iu-h interface requires enhancement with new messaging procedures
Solution Approach 1:
The invention adds preliminary messaging actions to the Iu-h interface: the HGW sends a Relocation Request message to the HNB before the actual relocation occurs, and the HNB responds with a Relocation Response message. This preliminary signaling exchange enables the HGW to proactively initiate relocation for service continuity in scenarios like HGW reset and ACL updates, rather than waiting for UE measurement triggers.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A method for user relocation triggered by a Home NodeB Gateway (HGW) is provided, which comprises steps of: transmitting, by the HGW, a relocation request message to a Home NodeB (HNB) to which a User Equipment (UE) belongs; triggering, by the HNB, a relocation procedure to relocate the UE to another NodeB; and transmitting, by the HNB, a relocation response message corresponding to the relocation request message to the HGW. With the present invention, it is possible in a HNB system to implement a UE relocation triggered by a HGW for new scenarios. This scheme enhances the Iu-h interface and facilitates the improvement of service quality of users. Additionally, it is capable of providing users with continuous services in different scenarios. The present method is easy to implement and effective in improving the stability and performance of HNB system.