DeNB Relay Node Interface Mapping for Accurate Switching
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Solution Overview
Problem
In wireless relay systems, the existing technologies fail to establish a correct corresponding relationship between the eNB identifier and the GU Group Id List, which is essential for switching type judgment, due to the intermediate network element DeNB, leading to incorrect switching decisions.
Innovation Solution
A method where the DeNB establishes and sends the corresponding relationship between the eNB identifier and the GU Group Id List of a neighbor eNB/RN network element, using X2 interface information, either through X2 setup messages or eNB configuration update messages, ensuring accurate switching type judgment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If DeNB acts as an intermediate network element to relay information between eNB and RN, then wireless coverage and connectivity are improved, but the correctness of switching type judgment deteriorates due to inability to establish proper eNB identifier to GU Group Id List correspondence
Solution Approach 1:
The patent introduces a message transmission mechanism where the DeNB acts as an intermediary to forward the correspondence relationship between eNB identifier and GU Group Id List from the eNB to the RN. This resolves the contradiction by enabling the intermediate element to properly transmit critical information needed for reliable switching judgment, rather than simply relaying data without preserving contextual relationships.
Solution Approach 2:
The patent establishes the correspondence relationship between eNB identifier and GU Group Id List in advance through X2 interface information exchange before handover operations. By pre-configuring this mapping relationship, the system ensures that when switching decisions need to be made, the RN already possesses the correct information for accurate switching type judgment, eliminating the reliability issue.
2Reliability
If X2 interface information is used to establish eNB identifier and GU Group Id List correspondence, then switching type judgment accuracy is improved, but device complexity increases due to additional information management requirements
Solution Approach 1:
The patent leverages the existing X2 interface, originally designed for eNB-to-eNB communication, to also carry eNB identifier and GU Group Id List correspondence information to the RN. By making the X2 interface multi-functional, the system achieves improved switching judgment accuracy without adding separate dedicated interfaces or significantly increasing overall system complexity.
Solution Approach 2:
The patent utilizes the existing message structures and information formats already defined for X2 interface communication, copying and adapting them to carry the additional correspondence information. This approach avoids creating entirely new complex information management systems, instead reusing established protocols and message formats to minimize the increase in device complexity.
Data Source
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AI summary
A method for obtaining interface information of a neighbor Evolved NodeB (eNB)/Relay Node (RN) is provided by the present invention. A Donor Evolved NodeB (DeNB) can establish a corresponding relationship between an eNB identifier of the neighbor eNB/RN network element and the GU Group Id List of the neighbor eNB/RN network element according to X2 interface information, and send the corresponding relationship to the RN network element/neighbor eNB; the DeNB can also send a GU Group Id List and cell information of the neighbor eNB/RN network element to the RN network element/neighbor eNB which can establish the corresponding relationship between the GU Group Id List and the eNB identifier of the neighbor eNB/RN network element. A wireless relay system is also provided by the present invention. The problem that the RN or the eNB network element in a wireless relay system can not obtain the corresponding relationship between the eNB identifier and the neighbor GU Group Id List, caused by the existence of an intermediate network element DeNB, is solved by the present invention.