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A switching method of a relay node

A relay node, relay base station technology, applied in electrical components, wireless communication, etc., can solve the problem of handover failure, ignoring the target cell, etc., to avoid handover failure and improve the effect of handover success rate

Inactive Publication Date: 2015-10-21
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing system supporting RN, when performing relay node handover, its serving base station only selects the target cell for handover based on the current measurement results, regardless of whether the target cell is a cell that supports mobile relay access. In this way, if If the selected target cell does not support mobile relay access, subsequent handovers will fail

Method used

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Experimental program
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Embodiment Construction

[0015] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments.

[0016] The core idea of ​​the present invention is to make the serving base station of the relay node store in advance whether the target cell is the relay base station cell, so that when the relay node handover is required, the serving base station can only select the relay base station cell as the target Therefore, it is possible to avoid the handover failure problem caused by selecting a non-relay base station cell as the target cell.

[0017] In practical applications, to make the serving base station of the relay node store the information of whether the target cell is the relay base station cell, two methods can be used, one is the message during the establishment process through the X2 interface, and the other is the network operation Maintenance system notifica...

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Abstract

The invention provides a method for switching a relay node. The method comprises the following steps of: allowing a source evolved Node B (eNB) to acquire whether a serving cell of a target eNB is a relay eNB cell or not in advance, and selecting the relay eNB cell as a target cell for switching in the switching process. Thus, the phenomenon that the switching process fails because the switched target cell does not support the access of a mobile relay can be avoided, so that the switching success rate of the relay node can be effectively increased.

Description

Technical field [0001] The present invention relates to a handover technology in a mobile communication system, and particularly relates to a handover method of a relay node in an LTE-A system. Background technique [0002] Currently, the concept of Relay is introduced in the LTE-A system to expand the application of LTE Rel-8. Through the introduction of Relay, high-speed cell coverage can be extended to achieve group mobility, temporary network deployment, enhancement of cell data service throughput, and to meet the needs of deploying networks in new areas. [0003] A relay node (Relay Node, RN) is wirelessly connected to a base station (eNB) supporting RN, and the eNB is called a relay eNB (Donor eNB, DeNB). The RN is located between the UE and the eNB. The radio interface between RN and eNB is a modified E-UTRAN air interface called Un interface. The RN needs to support all the functions of the eNB, which means that the E-UTRAN radio interface protocol, S1 / X2 protocol, will ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/08H04W92/20
Inventor 陈喆张欢李婷潘瑜
Owner POTEVIO INFORMATION TECH CO LTD