CN103888986A

CN103888986A - Method and device for processing cell failure

Info

Publication number: CN103888986A
Application number: CN201410077777.8A
Authority: CN
Inventors: 邹兰; 张凯
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2010-04-30
Filing date: 2010-04-30
Publication date: 2014-06-25
Anticipated expiration: 2030-04-30
Also published as: CN103888986B

Abstract

The embodiment of the invention provides a method and device for processing cell failure. The method for processing the cell failure comprises the steps that energy conservation activation messages sent by a second base station are received by a first base station when the cell failure of a second cell occurs and the energy conservation activation messages are used for preventing an energy conservation function; an energy conservation state of a first cell is converted into a normal state by the first base station according the energy conservation activation messages or a third cell is kept in a normal state until it is known that the problem of the cell failure of the second cell is solved. The method can solve the problems that due to the fact that the first cell is in the energy conservation state, the cell failure of the second cell bearing network coverage of the first cell occurs and loopholes of network coverage occur or the problems that when the cell failure of the second cell occurs, the third cell enters the energy conservation state and loopholes of network coverage occur.

Description

Method and equipment for processing cell failure

Technical Field

The present invention relates to the field of mobile communications, and in particular, to a method and an apparatus for handling cell failure.

Background

A base station in an ad hoc network may have an automatic power saving function and distinguish a cell into a cell in a power saving state and a cell in a normal state where power is not saved. Specifically, the base station automatically turns off part or all of the functions of the base station or reduces the transmission power of the base station according to a preset automatic energy-saving strategy, for example, by combining the current service use condition of the network with the expected service use condition of the network, so that part or all of the cells belonging to the base station in the normal state are converted into the energy-saving state, the service quality of a user is not lost, and the power consumption of the base station can be reduced.

Cell failure (out) is a network error scenario. In the self-organizing network, the automatic processing function of the cell failure can quickly detect the cell failure when the cell failure occurs, and automatically perform corresponding processing on the cell failure.

In the prior art, the automatic energy saving function of a base station in an ad hoc network may conflict with the automatic processing function of cell failure.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for processing cell failure.

One embodiment of the invention provides a method comprising: a first base station receives an energy-saving activation message sent by a second base station when a second cell has cell failure, wherein the energy-saving activation message is used for forbidding an energy-saving function, and the second cell belongs to the second base station; the first base station converts a first cell from an energy-saving state to a normal state according to an energy-saving activation message, wherein the first cell belongs to the first base station, and the second cell is a cell for bearing coverage substitution for the first cell; or the first base station keeps the third cell in a normal state according to the energy-saving activation message until the cell failure of the second cell is solved, wherein the third cell belongs to the first base station, and the second cell is a cell for bearing coverage substitution for the third cell.

One embodiment of the invention provides a method comprising: a method for handling cell failure, comprising: a first base station receives a notification message which is sent by a second base station and used for indicating that a second cell has cell failure, wherein the second cell belongs to the second base station; the first base station converts the first cell from an energy-saving state to a normal state according to the notification message, wherein the first cell belongs to the first base station, and the second cell is a cell for bearing coverage substitution for the first cell; or the first base station keeps the third cell in a normal state according to the notification message until the cell failure of the second cell is solved, wherein the third cell belongs to the first base station, and the second cell is a cell for bearing coverage substitution for the third cell.

One embodiment of the invention provides a method comprising: when finding that a second cell has cell failure, the integrated reference point management device enables a first base station to convert a first cell from an energy-saving state to a normal state through a network management northbound interface, wherein the first cell belongs to the first base station, and the second cell is a cell for bearing coverage substitution for the first cell; or, when finding that the cell failure occurs in the second cell, the integrated reference point management device maintains the third cell in a normal state through the network management northbound interface until it is known that the cell failure of the second cell is resolved, where the third cell belongs to the first base station, and the second cell is a cell that assumes coverage substitution for the third cell.

An embodiment of the present invention provides a base station including: the sending module is used for receiving a notice that the second cell has cell failure; the processing module is configured to convert the first cell from an energy saving state to a normal state, where the first cell belongs to the base station, and the second cell is a cell that assumes coverage and replaces the first cell; or, the processing module is configured to keep the third cell in a normal state until the failure of the second cell is resolved, where the third cell belongs to the base station, and the second cell is a cell that assumes coverage replacement for the third cell.

An embodiment of the present invention provides an apparatus comprising: the receiving module is used for determining that the second cell has cell failure;

the processing module is used for informing the first base station to convert the energy-saving state of the first cell into a normal state through the north interface of the network manager, wherein the first cell belongs to the first base station, and the second cell is a cell state for bearing coverage substitution for the first cell; or, the processing module is configured to notify, through the network management northbound interface, the first base station to keep the third cell in a normal state until it is known that the cell failure of the second cell is resolved, where the third cell belongs to the first base station, and the second cell is a cell that assumes coverage replacement for the third cell.

By applying the method or the equipment provided by the embodiment of the invention, the situation that the first cell is in the energy-saving state and the second cell which bears the network coverage of the first cell fails to work to cause the loophole of the network coverage can be avoided.

Drawings

FIG. 1(a) is a schematic diagram of a distributed architecture provided by an embodiment of the present invention;

FIG. 1(b) is a schematic diagram of a centralized architecture provided by another embodiment of the present invention;

fig. 2 is a flowchart of a method for cell failure handling according to another embodiment of the present invention;

fig. 3 is a flowchart of a method for cell failure handling according to another embodiment of the present invention;

fig. 4 is a flowchart of a method for cell failure handling according to another embodiment of the present invention;

fig. 5 is a schematic diagram of a base station according to another embodiment of the present invention;

fig. 6 is a schematic diagram of an apparatus according to another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1(a), when the ad hoc network in the embodiment of the present invention adopts a distributed implementation architecture, a cell a (cell a) is subordinate to a base station 1 (eNB 1), a cell b (cell b) is subordinate to a base station 2 (eNB 2), and an X2 interface is between the eNB1 and the eNB 2. When the cell a is in the energy saving state, the cell B may assume network coverage of the cell a, that is: cell B is a cell that can provide coverage alternatives for cell a, and cell B may be referred to as an alternative cell for cell a for short. That is to say, when the eNB1 to which the cell a belongs is automatically powered on, the cell a starts to be in the energy saving state (i.e., enters energy saving) at a certain time according to the policy setting of the energy saving function, and the cell B can take over the network covering the cell a.

As shown in fig. 1(b), when the ad hoc network in the embodiment of the present invention adopts a centralized architecture, a cell a (cell a) is subordinate to a base station 1 (eNB 1), a cell b (cell b) is subordinate to a base station 2 (eNB 2), and an eNB1 and an eNB2 are managed by the same integrated reference point management device (IRP Manager). The eNB1 is located inside an integrated reference point Agent (IRP Agent 1), and can communicate with a network management northbound (itf-N) interface between the IRP Agent and a network management system, the eNB2 and the IRP Agent2 are two independent devices, and the eNB2 communicates with a network Element Manager (Element Manager) in the IRP Agent2, so that the communication between the eNB2 and the network management system is realized through the itf-N interface between the IRP Agent2 and the network management system. In addition, whether the eNB and the IRPAgent in each embodiment of the present invention are independent devices does not affect the implementation of each embodiment, details of the eNB communicating with the network management system through the IRP Agent are not described in detail in each embodiment of the present invention, but the situations that the eNB inside the IRP Agent communicates with the IRP Manager and the IRP communicates with the IRPManager through the IRP Agent of the external device are collectively referred to as the eNB communicating with the network management system through the itf-N interface.

An embodiment of the present invention provides a method for processing a cell failure in a distributed architecture, which takes fig. 1(a) as an example, and assumes that a cell B assumes network coverage of a cell a when the cell a is in a power saving state. When the cell B is in cell failure, the cell A is switched from the energy-saving state to the normal state, so that the cell A recovers to bear the original coverage, and the influence of the cell failure in the substitute cell on the network coverage is reduced. Further, before the cell failure problem of the cell B is solved, the cell a does not re-enter energy saving according to a preset automatic energy saving strategy. In addition, if the cell B has a cell failure when the cell a is in the normal state, the cell a may not enter the energy saving state according to the original energy saving policy setting until the cell failure problem of the cell B is solved (i.e., the cell failure is over). Therefore, a network coverage hole can be avoided, or the ping-pong effect of continuously changing the takeover of the cell network coverage can be avoided.

Taking the distributed architecture provided in fig. 1(a) as an example, another embodiment of the present invention provides a method for handling a cell failure, as shown in fig. 2, including the following steps.

S210, eNB2 detects that cell B has a cell failure.

S220, the eNB2 sends a first notification message to the eNB 1.

For example, eNB2 sends a first notification message to all neighboring enbs that eNB1 may receive for which eNB1 is one of the neighboring enbs of eNB 2.

For another example, the eNB2 may obtain information about cell B to determine which cell or cells may use cell B as a substitute cell, and then the eNB2 sends the first notification message to the cell.

The first notification message may include a cell identifier and cell failure indication information, where the cell failure indication is used to indicate whether a cell corresponding to the cell identifier in the first notification message fails. For example, the cell id in the first notification message is a cell id of cell B, and the cell failure indication indicates that the cell has a cell failure.

Optionally, the eNB2 may also send the delayed start time information in the first notification message or other message. For example, the delayed activation time information includes waiting duration information, where the waiting duration information indicates a waiting duration from when the eNB1 receives the information to when the state transition process of the cell a is started, and if the duration corresponding to the waiting duration information is T, the eNB1 waits for the duration T after receiving the delayed activation time information, and if it is not known that the cell failure of the cell B is resolved, the state transition process of the cell a is started, so that the energy saving state of the cell a is converted into a normal state. For another example, the delayed activation time information includes start time information, where the start time information indicates a time when the eNB1 starts the state transition process of the cell a, and assuming that the start time information corresponds to time t, if the eNB1 does not know that the cell failure of the cell B is resolved at time t, the state transition process of the cell a is started, so that the energy saving state of the cell a is converted into the normal state. The above processing method is suitable for a situation where the requirement of the cell a on the network coverage is not high, for example, the cell a is a non-important cell. When the cell B fails, the cell B may try to recover itself first, and if the problem of cell failure is solved within a period of time, the cell a does not need to change state, and the network coverage of the cell a is not greatly affected. If the problem of cell failure is not solved within a period of time, the eNB1 switches the cell a from the energy saving state to the normal state, and resumes to assume the original coverage.

S230, eNB1 receives the first notification message, and determines whether the cell that uses cell B as the substitute cell is in a power saving state. If the above cell in the energy saving state exists, executing S240; if there is the above cell which is not in the energy saving state, S250 is performed.

For example, the eNB2 may send a first notification message to all neighboring enbs, and the eNB1 may learn that cell failure occurs in cell B according to the first notification message, and then acquire related information of each cell subordinate to the eNB1 to determine whether there is a cell that may use cell B as an alternative cell, for example, acquire related information of cell a to determine whether cell B is an alternative cell of cell a, and whether the cell is in a power saving state currently.

And S240, the eNB1 converts the state of the cell which takes the cell B as the alternative cell and is in the energy-saving state, and the converted cell state is the normal state.

For example, when the cell a is in the energy-saving state and the cell B is responsible for the network coverage of the cell a, the eNB1 converts the cell a from the energy-saving state to the normal state, thereby avoiding a vulnerability in the network coverage due to cell failure of a cell responsible for the network coverage of the cell a when the cell a is in the energy-saving state.

Optionally, if the eNB1 receives the delayed activation time information sent by the eNB2, for example, the first notification message received by the eNB1 in S230 includes the delayed activation time information, the eNB1 starts a state transition process for the cell B after waiting for the delayed activation time, so that the state of the cell a is transitioned to the normal state. If the eNB1 knows that the cell B has solved the cell failure while waiting for the delayed activation time, the eNB1 does not need to switch the state of the cell a because the cell B has ever experienced a cell failure.

If it is determined at S230 that there are multiple cells in the energy-saving state and whose network coverage is assumed by cell B, eNB1 may convert the states of all or some of these cells into the normal state.

Further, before the eNB1 does not know that the cell failure of the cell B is ended, the cell a does not re-enter energy saving according to a preset automatic energy saving strategy, that is, the eNB1 at least keeps the cell a in a non-energy saving normal state until the cell failure of the cell B is ended, so as to avoid a vulnerability in network coverage.

S250, before the cell failure of the cell B is over, the eNB1 makes the cell in the normal state keep the cell in the normal state as the substitute cell.

In this step, it is assumed that the cell B is a substitute cell for the cell C, i.e., the cell B can assume network coverage of the cell C. When the cell B fails, the cell C is not in the energy saving state, the eNB1 stores the received cell failure indication and the cell identifier, and before the cell failure of the cell B is finished, the cell C does not enter energy saving according to the preset automatic energy saving strategy, that is, the eNB1 may at least keep the cell C in the normal state until it is determined that the cell failure of the cell B is finished. In the above processing manner, the eNB1 regards the priority of the cell failure indication as higher than the priority of the preset automatic energy saving policy, for example, when the cell identifier of the cell B and the corresponding cell failure indication exist, no consideration is given to other automatic energy saving policies, and the cell C is always kept in the normal state. When the cell failure of the cell B is finished, the eNB1 clears the retained cell failure indication, and investigates whether the cell a needs to be converted into the energy saving state according to a preset automatic energy saving strategy. The processing method avoids the phenomenon that when the cell B which can bear the network coverage of the cell C is in cell failure, the cell C enters energy saving to cause the network coverage to have loopholes, or the network coverage of the cell C continuously changes the ping-pong effect of taking over the cell C and the cell B.

Taking the distributed architecture provided in fig. 1(a) as an example, another embodiment of the present invention further provides a method for processing a cell failure, as shown in fig. 3, including the following steps.

S510, when the cell A enters the energy saving mode or prepares to enter the energy saving mode, the eNB1 affiliated with the cell A sends a second notification message to the eNB2 affiliated with the cell B of the adjacent cell of the cell A.

For example, eNB1 sends a second notification message to all enbs affiliated with cell a neighbor cells, and eNB2 may receive the second notification message.

For another example, the eNB1 may obtain information about cell a to determine which cell or cells may serve as the alternative cell for cell a, and then the eNB2 sends a second notification message to the cells.

The second notification message may include a cell identifier and cell energy saving indication information, where the cell energy saving indication information is used to indicate whether a cell corresponding to the cell identifier in the second notification message enters energy saving. For example, when the cell a enters energy saving, the second notification message includes a cell identifier of the cell a, and the cell energy saving indication information indicates that the cell has been converted into an energy saving state.

In this step, when the cell a is ready to enter energy saving, the eNB1 sends the second notification message, and then the cell a enters energy saving immediately after the eNB1 sends the second notification message or enters energy saving after waiting for a period of time, and during the waiting for a period of time, the eNB1 may complete processing related to the cell a entering energy saving.

S520, the eNB2 to which the cell B belongs receives the second notification message, and the cell B is allowed to assume the network coverage of the cell a.

Since the eNB1 may send the second notification message to all enbs to which cell a neighboring cells pertain, the eNB2 may determine in this step whether the cells pertaining to the eNB2 include cells that may be an alternative to cell a.

S530, the eNB2 detects that the cell B has a cell failure.

S540, eNB2 sends an energy saving activation message to eNB1 to which cell a, which may use cell B as a substitute cell, belongs, where the message is used to notify eNB1 to switch cell a to the normal state.

For example, if eNB2 has saved cell a in a power-saving state before detecting that cell B has a cell failure, it may determine that it is necessary to wake up the cell as cell a.

For another example, the eNB2 may obtain information about cell B to determine which cell or cells may use cell B as a substitute cell, and then the eNB2 sends an energy saving activation message to the cell, or the eNB2 sends an energy saving activation message to the cell in an energy saving state.

Optionally, the energy-saving Activation message is a cell Activation REQUEST (cell Activation REQUEST) message including a cell identifier (Served Cells toactive) of a cell to be activated and Activation Reason (Reason For Activation) information. For example, when the eNB2 determines that the cell a needs To be activated due To the cell failure of the cell B according To the related information of the cell B, the Served Cells To Activation information is the cell identifier of the cell a, and the Reason For Activation information is the cell failure cause value (CO), that is, the cause value indicates that the cause of activating the cell is the cell failure. Optionally, the reasoncor Activation may be enumerated, for example, in addition to the cell failure cause value, a load balancing cause value (LB) may be included to indicate that the cause of activating the energy saving cell is load balancing, that is, when the eNB2 determines that a certain cell is activated due to the load balancing cause, the eNB2 may send an energy saving Activation message to the base station to which the cell belongs, where the energy saving Activation message includes the cell identifier of the cell and the load balancing cause value.

Optionally, the eNB2 may further send delayed activation time information in the energy saving activation message, for indicating a waiting time of the eNB1 to start the state transition procedure of the cell a after receiving the information.

And S550, the eNB1 receives the energy-saving activation message, so that the cell A is converted from the energy-saving state to the normal state.

For example, the eNB1 determines whether the cell corresponding to the cell identifier of the cell to be activated is in the energy-saving state according to the activation reason in the second notification message, and if so, converts the state of the cell a into the normal state, thereby avoiding the problem that the cell that assumes network coverage is in the energy-saving state and the network coverage is vulnerable due to cell failure of the cell that assumes network coverage.

If the energy saving activation message received by the eNB1 includes the delayed start time information, the eNB1 starts a state transition process for the cell B after waiting for the delayed start time, so that the state of the cell a is transitioned to a normal state. If the eNB1 knows that the cell B has solved the cell failure while waiting for the delayed activation time, the eNB1 does not need to switch the state of the cell a because the cell B has ever experienced a cell failure.

Further, cell a is kept in the normal state until eNB1 does not know the end of the cell failure for cell B.

In the above embodiment, after the cell failure occurs in the cell B, the eNB2 may notify other enbs of the cell failure occurring in the cell B, and the eNB receiving the notification determines which processing is performed on which cells. The eNB2 may also determine which kind of processing is performed for which cell, and then notify the eNB to which the cell belongs to perform activation processing, for example, the eNB1 wakes up the energy saving cell a through an energy saving activation message, so that the state of the cell a is converted into a normal state. When one of the eNB1 and the eNB2 can determine which cell is the subject of the cell failure processing, the coordination processing between the automatic power saving function in the network and the scenario in which the cell failure occurs can be implemented.

The base station in the embodiments of the present invention may determine the alternative relationship between the cells by querying an internal database or other external devices having a database function. The external device with database function includes network management system (IRP Manager), so that for the base station, it can send the query message including the cell identifier of the cell to be queried to the network management system through the itf-N interface, and then receive the query result provided by the network management system, thereby determining the substitution relationship between the cells. For the network management system, the substitution relation between cells can be determined according to the internal data without interface information. Under the condition, the management of the network management system to the base station is more convenient, the information obtained by different base stations can be consistent, and the configuration and the update of the cell substitution relation in the network management system are supported by an operator. If the internal database of the base station stores the substitution relationship between the cells, the base station can determine the substitution relationship between the cells without passing through the interface cells, thereby reducing the occupation of air interface resources and supporting an operator to directly configure or update the cell substitution relationship in the base station.

For example, another embodiment of the present invention provides a method for a base station to know an alternative relationship between cells, where the alternative relationship between cells in this embodiment refers to a case where a cell to be queried may serve as an alternative cell for another cell. The following description assumes that the cell to be queried is cell B.

Optionally, the base station in this embodiment receives neighboring cell relation information related to energy saving of the cell B, that is, neighboring cell relation information escompensated cell relationship of the cell B, where the information includes cell information (escompensated cell) of a cell that the cell B may replace as a substitute cell. For example, if the escompensitedcell is the cell identification information of the cell a, the base station determines that the cell B can be used as the substitute cell of the cell a. If the ESCCompensatedCellRelations information inquired by the base station includes cell identification information of a plurality of cells, the base station determines that the cell B can be used as a substitute cell of the cells.

Optionally, the base station in this embodiment receives neighboring cell relation information related to the cell B, that is, neighboring cell relation information eutranrelationship of the cell B. The eutranrelationship information may include adjacent cell information (adjacentCell) of the cell B, and indicates that an adjacent relationship exists between a cell corresponding to the adjacentCell information and the cell B, and is also used for indicating that the cell B is a substitute cell of the cell corresponding to the adjacentCell information. For example, the adjacentcell information includes a cell identifier of cell a, and the base station determines that cell B can be used as a substitute cell of cell a. If the base station inquires that the adjacentcell information comprises cell identification information of a plurality of cells, the base station determines that the cell B can be used as a substitute cell of the cells.

Optionally, the base station in this embodiment receives cell attribute information associated with the cell B, that is, cell attribute information EUtranGenericCell of the cell B, where the EUtranGenericCell information includes compensated cell list information (compensated cell list). The complemented celllist information indicates which cells the cellB may serve as a replacement cell for. For example, the compensated celllist information includes cell information (e.g., cell identification information) of the cell a, and the base station determines that the cell B can be a substitute cell for the cell a. If the base station queries that the compensatedCellList information related to the cell B includes cell information (e.g., cell identification information) of a plurality of cells, the base station determines that the cell B can be used as a substitute cell for the cells.

Another embodiment of the present invention provides a method for a base station to acquire an alternative relationship between cells, which is different from the embodiment in which the base station acquires an alternative relationship between cells, and the alternative relationship between cells in this embodiment refers to a situation in which other cells may be used as alternative cells to a cell to be queried. The following description assumes that the cell to be queried is cell a.

Optionally, the base station in this embodiment receives neighboring cell relation information related to energy saving of the cell a, that is, neighboring cell relation information, escompensating cellrelationship, of the cell a, where the escompensating cellrelationship information includes cell information (escompensating cell) of a cell that may be a substitute cell of the cell a. For example, if the escompensating cell is the cell identification information of the cell B, the base station determines that the cell B can be used as the substitute cell of the cell a. If the information of the escompensating cell relation inquired by the base station includes cell identification information of a plurality of cells, the base station determines that the cells can be used as the alternative cells of the cell a.

Optionally, the base station in this embodiment receives neighboring cell relation information related to the cell a, that is, neighboring cell relation information eutrination of the cell a, where the eutrination information includes neighboring cell information (adjacentCell) of the cell a, and indicates that a neighboring relation exists between a cell corresponding to the adjacentCell information and the cell a, and is further used to indicate that the cell corresponding to the adjacentCell information may be used as a substitute cell of the cell a. For example, the adjacentcell information includes cell identification information of cell B, and the base station determines that cell a is a substitute cell of cell B. If the base station inquires that the adjacentcell information of the cell A comprises cell identification information of a plurality of cells, the base station determines that the cells can be used as alternative cells of the cell A.

Optionally, the base station in this embodiment receives cell attribute information related to the cell a, that is, cell attribute information EUtranGenericCell of the cell a, where the information includes compensated cell list information (compensated cell list). The compensating celllist information indicates which cells can be used as the substitute cells for cell a. For example, the compensating celllist information includes cell information (e.g., cell identification information) of the cell B, and the base station determines that the cell B can be a substitute cell of the cell a. If the base station queries that the compensating celllist information includes cell information (e.g., cell identification information) of a plurality of cells, the base station determines that the cells can be all used as alternative cells of the cell a.

In the embodiment of the method for a base station to know the alternative relationship between cells, the base station querying the alternative relationship may query the information of the cell belonging to the base station according to the identifier of the cell belonging to the base station, or query the information of the other cell according to the information of the other cell, and determine whether the two cells have the alternative relationship.

Another embodiment of the present invention provides a method for a base station to determine whether a cell is allowed to save energy, which is described in detail below.

Optionally, the eNB1 in this embodiment receives neighboring relationship information (eutranrelationship) related to the cell a, where the eutranrelationship information includes energy saving compensated cell information (isEScompensateCell) of the cell a, and is used to indicate whether the cell a is allowed to save energy. For example, the isEScompensateCell information received by the eNB1 indicates that the cell a is allowed to save energy, the eNB1 may determine whether a condition for the cell a to enter energy saving is satisfied according to a preset automatic energy saving policy, and if so, the eNB1 may convert the cell a from a normal state to an energy saving state, so that the cell a enters energy saving.

Optionally, the eNB1 in this embodiment receives cell attribute information (EUtranGenericCell) related to the cell a, where the EUtranGenericCell information includes allowed energy saving identification information (isESAllowed) of the cell a, and is used to indicate whether the cell a is allowed to save energy. For example, the isESAllowed information received by the eNB1 indicates that energy saving is allowed for the cell a, the eNB1 may determine whether a condition for the cell a to enter energy saving is met according to a preset automatic energy saving policy, and if so, the eNB1 may convert the cell a from a normal state to an energy saving state, so that the cell a enters energy saving.

In this embodiment, the information indicating that a certain cell can perform energy saving received by the base station may be sent by the network management system, that is, whether the information indicating that a certain cell can perform energy saving is received or not may be regarded as configuration related to energy saving formulated by the network management system. That is to say, in the initial configuration or the updated configuration made by the network management system, all cells are not necessarily configured as cells capable of saving energy, so that the network management system distinguishes cells capable of saving energy from cells incapable of saving energy, and sends information indicating whether a certain cell is allowed to save energy to the base station according to the distinguishing result, thereby realizing convenient management of the base station by the network management system, enabling the base station to know which cells can be enabled to save energy when the base station judges that the automatic energy saving strategy is satisfied, and reducing the power consumption of the base station.

In addition, by using the method for the base station to know the alternative relationship between the cells provided by the other embodiments of the present invention, the base station may determine the alternative cell of the cell allowed to perform energy saving, and may also determine the cell not allowed to perform energy saving as the alternative cell of which cell or cells.

This embodiment may be combined with the method for handling cell failure provided in other embodiments of the present invention. For example, after the base station determines that a certain cell can save energy and makes the cell enter energy saving, the base station may further perform the step after the cell enters energy saving in other embodiments of the present invention, for example, S510.

Another embodiment of the present invention provides a method for a base station to know whether a cell with a cell failure has ended the cell failure, wherein the base station initiates an inquiry to a base station to which the cell with the cell failure is subordinate, and determines whether the cell failure of the cell is ended according to a received feedback message, where the inquiry may be implemented by periodically sending a message for inquiry, or by sending a message for inquiry at a preset time, or by including an inquiry field in a message in an existing communication process.

The embodiment can be flexibly combined with the cell failure processing method provided by other embodiments of the invention. Taking how the eNB1 knows the end of the cell failure of cell B subordinate to the eNB2 as an example, the eNB1 may periodically send a query message to the eNB2, where the query message is used to query whether the cell failure status of cell B is ended. When detecting that the cell B is no longer the cell failure, that is, the cell B has recovered the cell validity, the eNB2 sends a feedback message, where the feedback message is used to indicate that the cell failure of the cell B is over. If the eNB2 detects that the cell B is still cell failure, the eNB2 may notify the eNB1 that the cell failure of the cell B is not over, or may not send a feedback message.

Another embodiment of the present invention further provides a method for a base station to know whether a cell with a cell failure has ended the cell failure, wherein the base station does not actively perform an inquiry, but waits for a notification about the end of the cell failure sent by a base station to which the cell with the cell failure belongs, that is, when the notification is not received, the base station regards the cell with the cell failure as a cell with the problem of the cell failure that is not solved. This embodiment may also be flexibly combined with the method for processing cell failure according to other embodiments of the present invention, and will not be described herein again.

Taking the centralized architecture provided in fig. 1(b) as an example, another embodiment of the present invention further provides a method for processing cell failure, where the method implements coordination of base station energy saving and cell failure processing through unified management of a network management system on a base station. In this embodiment, the network management system obtains the optional situation of the cell failure of the second cell by receiving the notification of the eNB2, and the network management system in this embodiment may also determine that the cell failure of the second cell occurs according to the information stored in the network management system, which will not be described in detail below. As shown in fig. 4, the present embodiment may include the following steps.

S810, the eNB2 detects that the cell B has a cell failure.

S820, eNB2 notifies the network management system that cell B has cell failure.

For example, the eNB2 sends a third notification message to the network management system. The third notification message includes a cell identifier of a cell B in which a cell failure occurs and cell failure indication information, where the cell failure indication information indicates that the cell failure has occurred.

S830, the network management system receives the third notification message and determines whether the cell B as the substitute cell is in the energy-saving state. If the above cell in the energy saving state exists, executing S840; if there is the above cell which is not in the energy saving state, S850 is performed.

The network management system may determine whether the cell B corresponding to the cell identifier in the third notification message is in the energy-saving state as the cell of the substitute cell according to the substitute relationship between the cells stored in the network management system and the state information of the cells.

The network management system in this step may determine that there are multiple cells in the energy-saving state having an alternative relationship with the cell B, or multiple cells in the normal state having an alternative relationship with the cell B, and then the network management system may correspondingly execute S840 or S850 for these cells simultaneously or one by one.

And S840, the network management system wakes up the cell B as the substitute cell and the cell in the energy-saving state.

For example, cell B may assume network coverage of cell a, and when cell B fails, cell a is in a power saving state. When the network management system determines that the cell B has cell failure, the network management system wakes up the cell A, so that the problem of network coverage holes caused by the cell failure of the cell bearing the network coverage of the cell A due to the fact that the cell A is in an energy-saving state can be avoided.

Optionally, the network management system may send the energy saving disabling information (DisableES) to the base station through a separate message, so as to wake up the corresponding cell and keep the cell in a normal state. For example, if a message itself has a meaning of disabling the power saving function of a certain cell, the base station can determine that all cells belonging to the base station need to be processed by default by receiving the message. If the message also carries an object identifier for prohibiting the energy saving function, such as a cell identifier or a base station identifier, the base station can determine which cells need to be processed by receiving the message. The message may also have a meaning that the transmission cause is a cell failure of other cells, so that the base station receiving the message is made aware of the cause of the energy saving disable. For example, the network management system sends a message containing the energy saving disabling information DisableES to the eNB1 through the itf-N interface. If the energy saving disabling information includes the cell identifier of the cell a for which the energy saving function is forbidden, the eNB1 learns to convert the cell a into the normal state, and at least keeps the cell a in the normal state until it is learned that the cell failure problem has been solved by the cell B in which the cell failure occurs. If the energy saving disable information includes the base station identity, the eNB1 can learn to keep at least all cells subordinate to the eNB1 in the normal state until it is learned that the cell failure problem has been solved by the cell B in which the cell failure occurred. When the eNB1 receives the message containing the energy saving disabling information DisableES, if only a part of cells in the cell subordinate to the eNB1 are in the energy saving state, the eNB1 first changes the state of the cells into the normal state, and then keeps the cell subordinate to the eNB1 in the normal state until it is known that the cell B in which the cell fails has solved the cell failure problem, thereby avoiding a vulnerability in network coverage.

Optionally, the network management system may also carry the energy saving disabling information through a wake-up message. For example, the network management system sends a wake-up message to the eNB1 through the itf-N interface, where the wake-up message includes energy saving disable information DisableES, and optionally, the energy saving disable information includes cell identification or base station identification information for prohibiting the energy saving function. In addition, the wake-up message further includes reason information for disabling the power saving function. If the network management system sends the cell identifier of the cell a and the cell failure cause value to the eNB1, the eNB1 learns that the state of the cell a needs to be changed to a normal state due to cell failure of other cells, and at least maintains the cell a in the normal state until it is learned that the cell failure problem of the cell in which the cell failure occurs is solved, thereby avoiding a vulnerability from occurring in network coverage. If the network management system sends the base station identity of the eNB1 to which the cell a belongs and the cell failure cause value to the eNB1, the eNB1 learns that the states of all cells subordinate to the eNB1 need to be maintained in normal states at least because other cells have cell failures until it is learned that the cell failure occurring cell has solved the cell failure problem. When the eNB1 receives the wake-up message, if only a part of cells in the cell subordinate to the eNB1 are in the energy-saving state, the eNB1 first changes the state of the cell into the normal state, and then keeps the cell subordinate to the eNB1 in the normal state until it is known that the cell B in which the cell fails has solved the cell failure problem, thereby avoiding a vulnerability in network coverage.

Optionally, the wakeup message further includes configuration parameter information, that is, the network management system notifies the eNB1 of the configuration parameters related to the cell a, so that the eNB1 completes modification of the configuration parameters related to the cell a, and thus better coverage can be achieved after the cell a is woken up. If the wake-up message does not include the configuration parameter information, the cell a may adopt the original configuration parameter information or receive a configuration parameter modification command including the new configuration parameters of the cell a.

And S850, the network management system notifies the cell B of cell failure to the cell which takes the cell B as the substitute cell and is in a normal state.

Assuming that the cell B can bear the network coverage of the cell C, and when the cell B fails, the cell C is not in the energy saving state, the network management system notifies the eNB1 to which the cell C belongs of the cell B that the cell B fails, and the eNB1 enables the cell C not to enter energy saving according to a preset automatic energy saving strategy before the cell failure of the cell B is ended, that is, the eNB1 can at least keep the cell C in the non-energy saving normal state until the cell failure of the cell B is determined to be ended, thereby avoiding a vulnerability of the network coverage or a ping-pong effect that the network coverage of the cell C continuously changes a takeover person between the cell C and the cell B. The processing manner of the eNB1 is similar to that of the S250 in other embodiments of the present invention, and is not described herein again.

In this step, the network management system may adopt the processing manner of sending the energy saving disabling information in S840, for example, the energy saving disabling information includes the cell identifier of the cell C, so that the eNB1 learns that the cell C needs to be kept in the normal state at least until it is learned that the cell failure of the cell B is resolved because of the cell failure of other cells, which is not described in detail herein.

The method for the base station to know whether the cell with the cell failure has ended or not according to the other embodiments of the present invention may also be incorporated into this embodiment, or the network management system sends the query message to the eNB2 and receives the feedback message, or the network management system receives the notification sent by the eNB2, so as to know that the cell B with the cell failure has solved the cell failure problem, and then the network management system notifies the eNB1 so that the eNB1 can timely know that the cell failure of the cell B has ended, and prevent the cell a from entering the energy saving mode.

Another embodiment of the present invention further provides a method for enabling energy saving of a cell, where the embodiment is suitable for various scenarios where a network management system enables an energy saving function of a cell in a normal state, and the method includes a method for processing a cell failure in a centralized architecture provided in another embodiment of the present invention. For example, in S840 or S850, the eNB1 disables cell power saving for cell a even though cell a remains in the normal state. Next, if the eNB1 receives the energy saving enabling information, the automatic energy saving policy may be restored to determine whether the cell a can enter energy saving, so that the cell a has an opportunity to re-enter energy saving.

Optionally, the network management system may send the energy saving enabling information (EnableES) to the base station through a separate message to enable the energy saving function of the corresponding cell. For example, if a message itself has a meaning of enabling the power saving function of a certain cell, the base station can determine that all cells belonging to the base station need to be processed by default by receiving the message. If the message carries an object identifier enabling the energy saving function, such as a cell identifier or a base station identifier, the base station can determine which cells need to be processed by receiving the message. The message may also have the meaning that the reason for sending the message is that the other cell has solved the cell failure problem, so that the base station receiving the message knows the reason for energy saving activation. For example, the network management system sends a message containing energy saving enable information EnableES to the eNB1 through the itf-N interface. If the energy saving enabling information includes the cell identifier of the cell a with the energy saving function, the eNB1 knows that it is not necessary to keep the cell a in the normal state, and if the automatic energy saving policy is satisfied, the cell a may enter the energy saving state. If the energy saving enabling information includes the base station identity of eNB1, eNB1 may know that all cells subordinate to eNB1 do not need to remain in the normal state.

Optionally, the network management system may further carry the energy saving enabling information through a wake-up message. For example, the network management system sends a de-wake-up message including energy saving enable information EnableES including cell identification or base station identification information enabling the energy saving function to the eNB1 through the itf-N interface. In addition, the de-wake-up message further includes reason information for enabling the power saving function. If the network management system sends the cell identifier of the cell a and the cause value of the cell failure to be solved to the eNB1, the eNB1 knows that the cell a is not required to be kept in a normal state because other cells have cell failures. If the network management system sends the base station identity of the eNB1 to which the cell a belongs and the cause value that the cell failure has been solved to the eNB1, the eNB1 knows that the states of all cells belonging to the eNB1 do not need to be maintained in a normal state due to the cell failure of other cells.

The embodiment can enable the base station affiliated to the cell in the normal state to recover the energy-saving function of the cell in time, so that the cell has the opportunity to save energy as soon as possible, and the power consumption of the base station is reduced.

Another embodiment of the present invention provides a method for processing cell configuration parameters, which can be combined with the method for processing cell failure in a centralized architecture provided in other embodiments of the present invention.

In this embodiment, the cell B may bear network coverage of the cell a, when the cell a is in the energy saving state, the cell B has a cell failure, and the network management system wakes up the cell a by sending a wake-up message to the eNB1 to which the cell a belongs. When the wake-up message does not include the configuration parameter information, the eNB1 receives a configuration parameter modification command including the configuration parameters related to the cell a and a reason for the modification of the configuration parameters. The modification reason may be a value indicating a cause of cell failure, or a value different from a modification caused by a cause of non-cell failure, for example, the modification reason of the configuration parameter is distinguished by at least two kinds of identifiers, and one of the identifiers is uniformly used when the configuration parameter is modified due to cell failure in another cell (e.g., cell B), so as to be different from a case where the configuration parameter is modified due to another cause. The eNB1 also saves the modified configuration parameters and identifies the reason for the modification of the configuration parameters accordingly. Thus, when the eNB1 knows that the cell failure of the cell that has undergone cell failure has ended, the eNB1 can restore the configuration parameters related to the cell a that are modified due to the cell failure of the cell B to the original configuration parameters when the configuration parameters are not modified, thereby implementing fast recovery of the configuration parameters related to the cell, and reducing the influence on the cell (e.g., cell a) due to the cell failure of other cells (e.g., cell B).

As shown in fig. 6, another embodiment of the present invention provides a base station eNB1, which includes a transmitting module 1100 and a processing module 1200. The sending module 1100 is configured to receive a notification that a cell failure occurs in a second cell, and the processing module 1200 is configured to convert a first cell from an energy saving state to a normal state, where the first cell belongs to the eNB1, the second cell is a cell that assumes coverage for the first cell and is replaced, and optionally, the first cell is maintained in the normal state. Alternatively, the processing module 1200 is configured to maintain the third cell in the normal state until the second cell failure is resolved. Where the third cell is subordinate to eNB1 and the second cell is the cell that assumes coverage substitution for the third cell.

Optionally, the sending module 1100 is specifically configured to receive a cell identifier of the second cell and cell failure indication information indicating that a cell failure occurs in the second cell. Optionally, the sending module 1100 is specifically configured to receive an energy saving activation message, where the energy saving activation message includes a cell identifier of a second cell and activation reason information, and the activation reason information includes a cell failure reason value. For example, the second cell is subordinate to the second base station, and the energy saving activation message is transmitted by the second base station.

Optionally, the base station further includes a receiving module 1300, configured to receive delay start time information, where the delay start time information includes waiting duration information. The processing module 1200 is further configured to start a state transition process of the first cell when the waiting time is reached after the receiving module 1300 receives the delayed start time information.

Optionally, the base station further includes a receiving module 1300 configured to receive delayed start time information, where the delayed start time information includes start time information. The processing module 1200 is further configured to initiate a state transition procedure of the first cell when the receiving module 1300 reaches the start time.

Optionally, the processing module 1200 is further configured to determine that the second cell is a cell that assumes coverage replacement for the first cell.

Optionally, the receiving module 1300 is specifically configured to receive a notification that a cell failure occurs in the second cell after the processing module 1200 determines that the second cell is a cell that assumes coverage replacement for the first cell. Optionally, the processing module 1200 is specifically configured to determine that the second cell is a cell that assumes coverage replacement for the first cell after the receiving module 1300 receives the notification that the second cell has a cell failure.

Optionally, the sending module 1100 is further configured to send the cell identifier and the cell energy saving indication information of the first cell before the receiving module 1300 receives the notification that the second cell has the cell failure, and after the processing module 1200 determines that the second cell is the cell that assumes coverage replacement for the first cell, where the cell energy saving indication information indicates that the first cell enters energy saving.

Optionally, the processing module 1200 is specifically configured to determine, according to the identifier of the second cell received by the receiving module 1100, that the second cell is a cell that assumes coverage replacement for the first cell. For example, the receiving module 1100 receives the neighbor relation information, the energy saving compensated cell information, or the cell attribute information eutrangenetic cell of the first cell, where the neighbor relation information, the energy saving compensated cell information, or the cell attribute information carries the identifier information of the second cell.

Optionally, the sending module 1100 is further configured to send the cell identifier of the first cell, for example, to an IRP Manager, before the receiving module 1100 receives the identifier of the second cell.

Optionally, the receiving module 1100 is further configured to receive a configuration parameter modification command, where the configuration parameter of the first cell and a modification reason of the configuration parameter are included, and the modification reason is a cell failure reason value or a reason value different from a modification caused by a non-cell failure reason.

Optionally, the receiving module 1100 is further configured to receive a notification about the end of the cell failure of the second cell, and the processing module 1200 is further configured to maintain the first cell in a normal state or convert the first cell from the normal state to an energy saving state according to an automatic energy saving policy.

The base station provided by the embodiment can avoid the situation that the first cell is in the energy-saving state, and the second cell bearing the network coverage of the first cell has cell failure to cause the loophole of the network coverage.

Fig. 6 another embodiment of the present invention provides an apparatus comprising a receiving module 3100 and a processing module 3200. The receiving module 3100 is configured to determine that a cell failure occurs in the second cell, for example, receive a cell identifier of the second cell and cell failure indication information indicating that the cell failure occurs in the second cell, and the processing module 3200 is configured to notify the first base station through the network management northbound interface to convert the first cell from an energy saving state to a normal state, where the first cell belongs to the eNB1, the second cell is a cell that assumes coverage and is replaced for the first cell, and optionally, the first cell is maintained in the normal state. Or the first base station is informed to keep the third cell in a normal state through the network management northbound interface until the cell failure of the second cell is known to be solved, wherein the third cell belongs to the first base station, and the second cell is a cell for bearing coverage substitution for the third cell. Optionally, the cell failure indication information is sent by a second base station to which the second cell belongs.

Optionally, the processing module 3200 is configured to send, to the first base station through the network management northbound interface, reason information for prohibiting the energy saving function, where the reason information for prohibiting the energy saving function is a cell failure reason value. The processing module 3200 is further configured to send, to the first base station through the network management northbound interface, an object identifier that prohibits the energy saving function, for example, the object identifier that prohibits the energy saving function is a cell identifier of the first cell or a base station identifier of the first base station.

Optionally, the processing module 3200 is specifically configured to receive a wake-up message, where the wake-up message includes reason information for prohibiting the energy-saving function or an identifier for prohibiting the energy-saving function, and the wake-up message further includes configuration parameter information of the first cell.

Optionally, the processing module 3200 is further configured to send a configuration parameter modification command to the first base station, where the configuration parameter modification command includes the configuration parameter of the first cell and a modification reason of the configuration parameter, for example, a modification reason is a cell failure reason value, or a reason value different from a modification caused by a non-cell failure reason.

Optionally, the processing module 3200 is further configured to send, to the first base station, indication information related to the first cell before the receiving module 3100 receives the cell identifier of the second cell and cell failure indication information indicating that the second cell has a cell failure, where the indication information is used to indicate that the first cell is allowed to perform energy saving. For example, the indication information is energy saving compensated cell information isEScompensateCell in the neighbor relation information eutranrelationship, or allowed energy saving identification information isESAllowed in the cell attribute information EUtranGenericCell of the first cell.

Optionally, the receiving module 3100 is further configured to receive a notification about a completion of a cell failure of the second cell, and the processing module 3200 is further configured to send, to the first base station through the network management northbound interface, information of a cause for enabling the energy saving function, for example, the information of the cause for enabling the energy saving function is a cause value for a resolved cell failure.

Optionally, the processing module 3200 is further configured to send, to the first base station through the network management northbound interface, an object identifier enabling the energy saving function, for example, the object identifier enabling the energy saving function is a cell identifier of the first cell or a base station identifier of the first base station.

The device provided by this embodiment may be an IRP Manager. The equipment provided by the invention can avoid the situation that the first cell is in an energy-saving state, and the second cell which bears the network coverage of the first cell has cell failure to cause the loophole of the network coverage.

For further optional methods of the device provided by the above embodiments, reference may be made to methods provided by other embodiments of the present invention, and details are not described here again.

Those skilled in the art will appreciate that all or part of the steps in the method according to the above embodiments may be implemented by a program, which is stored in a computer-readable storage medium, and the program may be configured to: ROM/RAM, magnetic disk, optical disk, etc.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.

Claims

1. A method for handling cell failure, comprising:

the integrated reference point management device IRP Manager acquires that the second cell has cell failure;

if the IRP Manager determines that a first cell which takes the second cell as a substitute cell is in a power saving state, the IRP Manager wakes up the first cell; or, if the IRP Manager determines that a third cell, which uses the second cell as a substitute cell, is not in a power saving state, the IRP Manager notifies the third cell of the occurrence of a cell failure in the second cell.

2. The method of claim 1, wherein the IRP Manager learning that the second cell has a cell failure comprises:

and the IRP Manager acquires that the second cell has cell failure by receiving the notification of the second base station.

3. The method of claim 2, wherein the IRP Manager learning of the second cell of cell failure by receiving notification of a second base station comprises:

and the IRP Manager receives a third notification message sent by the second base station, wherein the third notification message comprises a cell identifier of the second cell and cell failure indication information, and the cell failure indication information indicates that cell failure occurs.

4. The method of claim 3, further comprising:

and the IRP Manager determines whether the cell which takes the second cell as the substitute cell is in the energy-saving state or not according to the substitution relation between the cells stored by the IRP Manager and the state information of the cells.

5. The method of claim 1, wherein the IRP Manager learning that the second cell has a cell failure comprises:

and the IRP Manager judges that the second cell has cell failure according to the information stored by the IRP Manager.

6. The method of any of claims 1-5, wherein the IRP Manager notifying the third cell of the occurrence of a cell failure of the second cell comprises:

the IRP Manager notifies the first base station eNB1 that the cell failure occurs in the second cell, so that the third cell is kept in a non-energy-saving normal state until the cell failure of the second cell is finished; wherein the third cell is subordinate to the first base station.

7. The method according to any of claims 1-6, wherein after the IRP Manager notifies the third cell that a cell failure occurred in the second cell, the method further comprises:

the IRP Manager receives the message sent by the eNB2 to indicate the end of the cell failure of the second cell.

8. The method of any one of claims 1-5, wherein the IRP Manager waking the first cell comprises:

the IRP Manager sends a message containing energy-saving disabling information DisableES to a first base station through a network management northbound interface so as to awaken the first cell and keep the first cell in a normal state; wherein the first cell is subordinate to the first base station.

9. The method according to any of claims 1-8, wherein before the IRP Manager learns that a cell failure occurred in the second cell, the method further comprises:

the IRP Manager sends a message containing energy-saving enabling information EnablES to the first base station through a network management northbound interface so as to enable the energy-saving function of the first cell; wherein the first cell is subordinate to the first base station.

10. An apparatus, comprising: the device comprises a receiving module and a processing module; wherein,

the receiving module is used for acquiring that the second cell has cell failure;

the processing module is configured to determine that a first cell, which uses the second cell as a substitute cell, is in an energy-saving state, and wake up the first cell; or, the processing module is configured to determine that a third cell that uses the second cell as a substitute cell is not in an energy-saving state, and notify the third cell of a cell failure of the second cell.

11. The apparatus of claim 10, wherein the means for receiving is configured to learn that the second cell has a cell failure comprising:

the receiving module is used for acquiring that the second cell has cell failure by receiving the notification of the second base station.

12. The apparatus of claim 11, wherein the means for receiving is configured to learn that the second cell has a cell failure by receiving the notification of the second base station comprises:

the receiving module is configured to receive a third notification message sent by the second base station, where the third notification message includes a cell identifier of the second cell and cell failure indication information, and the cell failure indication information indicates that cell failure has occurred.

13. The device of claim 12, wherein the processing module is further to:

and determining whether the cell using the second cell as the substitute cell is in the energy-saving state or not according to the substitute relationship between the cells stored by the second cell and the state information of the cells.

14. The apparatus of claim 10, wherein the means for receiving is configured to learn that the second cell has a cell failure comprising:

the receiving module is used for judging that the second cell has cell failure according to the information stored by the receiving module.

15. The apparatus of any one of claims 10-14, wherein the processing module configured to notify the third cell of the occurrence of a cell failure of the second cell comprises:

the processing module is configured to notify the first base station eNB1 that the cell failure occurs in the second cell, so that the third cell is kept in a non-energy-saving normal state until the cell failure of the second cell is finished; wherein the third cell is subordinate to the first base station.

16. The device of any one of claims 10-15, wherein the receiving module is further to: after the processing module notifies the third cell of the occurrence of the cell failure of the second cell, receiving a message sent by the eNB2 for indicating the end of the cell failure of the second cell.

17. The device of any one of claims 10-14, wherein the processing module to wake up the first cell comprises:

the processing module is used for sending a message containing energy-saving disabling information DisableES to a first base station through a network management northbound interface so as to awaken the first cell and keep the first cell in a normal state; wherein the first cell is subordinate to the first base station.

18. The device of any one of claims 10-17, wherein the processing module is further to: before the receiving module learns that the second cell has cell failure, sending a message containing energy-saving enabling information EnablES to the first base station through a network management northbound interface so as to enable the energy-saving function of the first cell; wherein the first cell is subordinate to the first base station.

19. The device according to any of claims 10-18, wherein the device is an integrated reference point management device, IRP Manager.