Transfer method and donor eNodeB for subframe configuration information of serving cell

Abstract

A transfer method for subframe configuration information of a serving cell and a donor eNodeB are applied in a mobile relay scene. The method comprises: a current donor eNodeB sending a cell activation message to a target donor eNodeB, wherein the cell activation message comprises Long Term Evolution Time Division Duplex (LTE-TDD) subframe configuration information of a serving cell of a mobile relay (MR) under the current donor eNodeB. The above-mentioned technical solution solves the problem how to ensure the continuity of the TDD subframe configuration in the cell of the target DeNB currently when the MR moves among several donor eNodeBs.

Claims

1. A transfer method for subframe configuration information of a serving cell, comprising a step of: when a mobile relay (MR) moves among multiple donor eNodeBs, a current donor eNodeB sending a cell activation message to a target donor eNodeB, wherein the cell activation message comprises Long Term Evolution Time Division Duplex (LTE-TDD) subframe configuration information of a serving cell of the mobile relay (MR) under the current donor eNodeB, wherein, the step of the current donor eNodeB sending the cell activation message to the target donor eNodeB comprises a step of: the current donor eNodeB sending the cell activation message to the target donor eNodeB through an X2 interface or an S1 interface, and wherein, the step of the current donor eNodeB sending the cell activation message to the target donor eNodeB through the S1 interface comprises: the current donor eNodeB sending the cell activation message to a mobile management entity (MME) through the S1 interface, and the MME sending the cell activation message to the target donor eNodeB through the S1 interface.

2. The method according to claim 1, wherein, the cell activation message further comprises information of one or more cells to be activated.

3. The method according to claim 2, wherein, before the current donor eNodeB sends the cell activation message to the target donor eNodeB, the method further comprises: the current donor eNodeB determining the target donor eNodeB according to historical cell information carried in a switchover request message of the MR.

4. The method according to claim 1, wherein, before the current donor eNodeB sends the cell activation message to the target donor eNodeB, the method further comprises: the current donor eNodeB determining the target donor eNodeB according to historical cell information carried in a switchover request message of the MR.

5. The method according to claim 1, wherein, before the current donor eNodeB sends the cell activation message to the target donor eNodeB, the method further comprises: the current donor eNodeB determining the target donor eNodeB according to historical cell information carried in a switchover request message of the MR.

6. The method according to claim 1, wherein, before the current donor eNodeB sends the cell activation message to the target donor eNodeB, the method further comprises: the current donor eNodeB determining the target donor eNodeB according to historical cell information carried in a switchover request message of the MR.

7. A donor eNodeB, applied in a mobile relay scene, comprising a sending module, wherein: when the mobile relay moves among multiple donor eNodeBs, the sending module is configured to: send a cell activation message to a target donor eNodeB, wherein the cell activation message comprises Long Term Evolution Time Division Duplex (LTE-TDD) subframe configuration information of a serving cell of a mobile relay (MR) under the current donor eNodeB, wherein, the sending module is configured to send the cell activation message to the target donor eNodeB according to the following mode: sending the cell activation message to the target donor eNodeB through an X2 interface or an S1 interface, and wherein, the sending module is configured to send the cell activation message to the target donor eNodeB through the S1 interface according to the following mode: sending the cell activation message to a mobile management entity (MME) through the S1 interface, so that the MME sending the cell activation message to the target donor eNodeB through the S1 interface.

8. The donor eNodeB according to claim 7, wherein, the cell activation message further comprises information of one or more cells to be activated.

9. The donor eNodeB according to claim 8, further comprising a determination module, wherein, the determination module is configured to: determine the target donor eNodeB according to historical cell information carried in a switchover request message of the MR.

10. The donor eNodeB according to claim 7, further comprising a determination module, wherein, the determination module is configured to: determine the target donor eNodeB according to historical cell information carried in a switchover request message of the MR.

11. The donor eNodeB according to claim 7, further comprising a determination module, wherein, the determination module is configured to: determine the target donor eNodeB according to historical cell information carried in a switchover request message of the MR.

12. The donor eNodeB according to claim 7, further comprising a determination module, wherein, the determination module is configured to: determine the target donor eNodeB according to historical cell information carried in a switchover request message of the MR.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) FIG. 1 is deployment scene diagram one of a relevant mobile relay;

(2) FIG. 2 is deployment scene diagram two of a relevant mobile relay;

(3) FIG. 3 is a signaling flow chart of transfer method embodiment one for subframe configuration information of the present document;

(4) FIG. 4 is a signaling flow chart of transfer method embodiment two for subframe configuration information of the present document;

(5) FIG. 5 is a structure diagram of a donor eNodeB according to an embodiment of the present document.

PREFERRED EMBODIMENTS OF THE PRESENT DOCUMENT

(6) In order to make the objective, technical scheme and advantage of the present document much more clear and obvious, the embodiment of the present document is described in detail with reference to the accompanying drawings hereinafter. It should be illustrated that, in the case of not conflicting, the embodiments in the present application and features in these embodiments can be combined with each other.

(7) The embodiment of the present document provides a transfer method for subframe configuration information of a serving cell, the method performs the description from the current donor eNodeB and is applied in the mobile relay scene, and the method includes the following steps.

(8) In step 101, the current donor eNodeB determines the target donor eNodeB according to historical cell information carried in a switchover request message of the MR.

(9) The step is an alternative step.

(10) In step 102, a current donor eNodeB sends a cell activation message to a target donor eNodeB, wherein the cell activation message includes Long Term Evolution Time Division Duplex (LTE-TDD) subframe configuration information of a serving cell of a mobile relay (MR) in the current donor eNodeB.

(11) The cell activation message further includes information of one or more cells to be activated. And the current donor eNodeB sends the cell activation message to the target donor eNodeB through an X2 interface or an S1 interface.

(12) The transfer method for the subframe configuration information of the serving cell is described in detail from the angle of the interaction between the current donor eNodeB and the target donor eNodeB.

(13) Combining with FIG. 3, the description of the transfer method embodiment one for the subframe configuration information is as follows.

(14) When the energy conservation judgment is performed locally in the DeNB, the MR user in the current cell moves away and other normal users can be switched to other cells, for example, the DeNB is under the coverage of other macro cells, then it could enter the dormant state.

(15) Because the MR movement has accurate directivity, this point is different from the normal user. Because the switchover procedure of the current MR is the same as that of the normal user, the historical cell information will be carried in the switchover request message. the DeNB1 can determine the movement direction of the MR according to the UE historical information of the MR, and perform the operation of activating the DeNB2 before the MR switches over. Supposing that there is an X2 interface between the DeNB1 and the DeNB2, the method includes the following steps.

(16) In step 301, the DeNB1 sends the cell activation message to the DeNB2 through the X2 interface, where the message includes the information of one or more cells to be activated, and the LTE-TDD subframe configuration information of the serving cell of the MR under the current DeNB1.

(17) In step 302, after the DeNB2 receives the cell activation message, if it is processed successfully, the cell activation confirmation message is sent to the DeNB1; otherwise, step 303 is turned into.

(18) In step 303, the DeNB2 sends the cell activation failure message carrying the failure reason therein to the DeNB1.

(19) Combining with FIG. 4, the description of the transfer method embodiment two for the subframe configuration information is as follows.

(20) When the energy conservation judgment is performed locally in the DeNB, if the MR user in the current cell moves away and other normal users can be switched to other cells, for example, the DeNB is under the coverage of other macro cells, then the DeNB could enter the dormant state.

(21) Because the MR movement has accurate directivity, this point is different from the normal user. Because the switchover procedure of the current MR is the same as that of the normal user, the historical cell information will be carried in the switchover request message. The DeNB1 can determine the movement direction of the MR according to the UE historical information of the MR, and perform the operation of activating the DeNB2 before the MR switches over. Supposing that there is no longer an X2 interface between the DeNB1 and the DeNB2, the method includes the following steps.

(22) In step 401, the DeNB1 sends the cell activation message to the DeNB2 through the S1 interface, where the message includes the information of one or more cells to be activated, and the LTE-TDD subframe configuration information of the serving cell of the MR currently under the DeNB1.

(23) In step 402, the MME transparently transmits the cell activation message to the DeNB2 through the S1 interface, the message includes the information of one or more cells to be activated, and the LTE-TDD subframe configuration information of the serving cell of the MR under the current DeNB1.

(24) In step 403, after the DeNB2 receives the cell activation message, if it is processed successfully, the cell activation confirmation message is sent to the MME and step 404 is executed; otherwise, step 405 is turned into.

(25) In step 404, the MME transparently transmits the cell activation confirmation message to the DeNB1; it is ended.

(26) In step 405, the DeNB2 sends the cell activation failure message carrying the failure reason therein for DeNB1 to the MME.

(27) In step 406, the MME transparently transmits the cell activation failure message to the DeNB1.

(28) The above-mentioned transfer method of the subframe configuration information, through carrying the LTE-TDD subframe configuration information in the interface message, enables the target DeNB to select and configure the LTE-TDD subframe effectively and fast after the mobile relay moves over to the target DeNB, which fully considers the service volume of the MR and enables the TDD subframe configuration of the serving cell of the MR keep the continuity and helps to realize the mobile relay switchover optimization and improve the network performance and the user satisfaction.

(29) As shown in FIG. 5, it is a structure diagram of the donor eNodeB embodiment of the present document. The donor eNodeB includes a sending module 51, wherein:

(30) the sending module 51 is configured to: send a cell activation message to a target donor eNodeB, wherein the cell activation message includes Long Term Evolution Time Division Duplex (LTE-TDD) subframe configuration information of a serving cell of a mobile relay (MR) in the current donor eNodeB.

(31) Wherein, the sending module 51 is configured to send the cell activation message to the target donor eNodeB according to the following mode: sending the cell activation message to the target donor eNodeB through an X2 interface or an S1 interface. Specifically, the sending module 51 sends the cell activation message to the MME through the S1 interface, so that the MME sends the cell activation message to the target donor eNodeB through the S1 interface.

(32) In addition, the cell activation message further includes information of one or more cells to be activated.

(33) Alternatively, the donor eNodeB further includes a determination module 52, configured to: determine the target donor eNodeB according to historical cell information carried in a switchover request message of the MR before the sending module 51 sends the cell activation message to the target donor eNodeB.

(34) The above-mentioned donor eNodeB, through transferring the LTE-TDD subframe configuration information to the target DeNB, helps the target DeNB to realize the accurate and effective LTE-TDD subframe configuration of the serving cell aiming at the single MR, helps the network performance optimization and improves the user satisfaction.

(35) It can be understood by those skilled in the art that all or part of steps in the above-mentioned method can be fulfilled by programs instructing the relevant hardware components, and the programs can be stored in a computer readable storage medium such as a read only memory, a magnetic disk or an optical disk, etc. Alternatively, all or part of the steps in the above-mentioned embodiments can be implemented with one or more integrated circuits. Accordingly, each module/unit in the above-mentioned embodiments can be implemented in the form of hardware, or in the form of software function module. The present document is not limit to any specific form of the combination of the hardware and software.

(36) The above-mentioned embodiments are only used to illustrate the technical scheme of the present document while not to limit, and the present document is described in details only referring to the preferable embodiments. Those skilled in the art should understand that they can make the modifications and equivalents according to the technical scheme of the present document without departing from the spirit and scope of the present document, which should be embodied in the scope of the appending claims of the present document.

INDUSTRIAL APPLICABILITY

(37) The above-mentioned technical solution, through carrying the LTE-TDD subframe configuration information in the interface message, enables the target DeNB to select and configure the LTE-TDD subframe effectively and fast after the mobile relay moves over to the target DeNB, which fully considers the service volume of the MR and enables the TDD subframe configuration of the serving cell of the MR keep the continuity and helps to realize the mobile relay switchover optimization and improve the network performance. Therefore, the present document has very strong industrial applicability.