Method and system for transmitting cell mobility state information in LTE (Long Term Evolution)

A state information and mobility technology, applied in the field of LTE mobile communication, can solve problems such as handover failure, network performance degradation, and failure of cell self-optimization

Inactive Publication Date: 2010-07-21
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Otherwise, it will cause a large number of handover failures, resulting in the degradation of network performance, and may cause the self-optimization of the cell to fail

Method used

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  • Method and system for transmitting cell mobility state information in LTE (Long Term Evolution)
  • Method and system for transmitting cell mobility state information in LTE (Long Term Evolution)
  • Method and system for transmitting cell mobility state information in LTE (Long Term Evolution)

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Embodiment 1 is a specific embodiment in which the cell mobility status information is transmitted in the X2 interface message as an attribute of the serving cell, such as figure 1 As shown, in this embodiment, base station 1 includes cell a, base station 2 includes cell b, base station 1 and base station 2 have established an X2 interface, and base station 2 has saved the mobility status information of cell a. The detailed steps are as follows:

[0061] Step 101, when the mobility state of cell a changes, base station 1 sends an eNB configuration update message to base station 2.

[0062] When the mobility status of the cell changes, such as modifying the physical address of the cell, during the modification process, the mobility status of the cell is unavailable. The serving cell information (Served Cell Information) of cell a in the eNB configuration update message includes the latest mobility state information of cell a, such as available or unavailable.

[0063] ...

Embodiment 2

[0065] Embodiment 2 is a specific embodiment in which cell mobility status information is transmitted in an X2 interface message as an attribute of a serving cell when an X2 interface is established between base station 1 and base station 2, such as figure 2 As shown, in this embodiment, base station 1 includes cell a, and base station 2 includes cell b. Specific steps are as follows:

[0066] Step 201, when establishing an X2 interface between base station 1 and base station 2, base station 1 sends an X2 establishment request message to base station 2. In the X2 interface setup message, the serving cell information (Served CellInformation) of the cell a includes the mobility state information of the cell a.

[0067] Step 202, after base station 2 receives the X2 setup request message sent by base station 1, saves the mobility state information of cell a;

[0068] Step 203, base station 2 returns an X2 establishment response message to base station 1. The mobility status i...

Embodiment 3

[0070] Embodiment 3 is an embodiment in which cell mobility state information is transmitted in an X2 interface message as an extended state of the serving cell state, such as image 3 As shown, in this embodiment, base station 1 includes cell a, and base station 2 includes cell b. Base station 1 and base station 2 have established an X2 interface, and base station 2 has saved the state information of cell a.

[0071] In step 301, the mobility state of cell a changes, for example, the physical address of the cell is modified. Base station 1 sends an eNB configuration update message to base station 2.

[0072] The serving cell information (Served Cell Information) of cell a in the eNB configuration update message includes the latest state information of the cell, such as the mobility state being unavailable or working normally.

[0073] Step 302, base station 2 updates the status information of cell a after receiving the eNB configuration update message sent by base station 1...

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Abstract

The invention discloses a method and a system for transmitting cell mobility state information in LTE (Long Term Evolution), used for solving the technical problem of the change notification mode of the mobility state of a cell in the charge of an adjacency base station in an LTE ad hoc network. In the invention, the adjacency base station of the change can be informed of the mobility state of a cell in the charge of current base station through updating a configuration message by using a base station of an X2 interface, or establishing a request message or a response message by using the X2 interface; a resource base stage also can inform a target base station of the cell mobility state information of a cell in the charge of the resource base station by embedding the cell mobility state information in information of switch preparation failure; and when the cell in the charge of the resource base station is about to modify the physical address of the cell, the target base station can be informed that the cell mobility state of the cell in the charge of the resource base station is in an unavailable state by sending a specific cell physical address modification instruction message. The technical scheme of the invention can ensure successful self-optimization of the current cell, improve network switch success rate and enhance network performance.

Description

technical field [0001] The present invention relates to LTE (Long Term Evolution, Long Term Evolution) mobile communication technology, and in particular to a method and system for transmitting cell mobility status in the LTE system. Background technique [0002] The LTE network is composed of an E-UTRAN (Evolved UTRAN) base station (Evolved NodeB, eNB) and an evolved packet switching center (Evolved Packet Core, EPC), and the network is flat. The E-UTRAN includes a set of eNBs connected to the EPC through the S1 interface, and the eNBs can be connected through the X2. S1 and X2 are logical interfaces. One EPC can manage one or more eNBs, one eNB can also be controlled by multiple EPCs, and one eNB can manage one or more cells. [0003] Self Organized Network (SON) is a technology for automatic network configuration and optimization. The technology is characterized by self-configuration and self-optimization. The application of this technology in LTE enables the LTE base ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W92/20
Inventor 韩立锋高音费腾
Owner ZTE CORP
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