CN103888986A - Method and device for processing cell failure - Google Patents

Abstract

Embodiments of the present invention provide a cell failure processing method and equipment thereof, wherein the cell failure processing method includes: the first base station receives an energy-saving activation message sent by the second base station when a cell failure occurs in the second cell, and the energy-saving activation message is used Forbidding the energy saving function; the first base station converts the first cell from the energy saving state to the normal state according to the energy saving activation message, or keeps the third cell in the normal state until it is informed that the cell failure of the second cell has been resolved. This method can avoid the problem that the first cell itself is in the energy-saving state, and the second cell that assumes its network coverage has a cell failure, resulting in a loophole in network coverage, or the third cell enters the energy-saving state when the second cell fails. Issues that cause holes in network coverage.

Description

Cell failure processing method and equipment

technical field

The invention relates to the field of mobile communication, in particular to a cell failure processing method and equipment thereof.

Background technique

A base station in an ad hoc network may have an automatic energy saving function, and distinguish cells into cells in an energy saving state and cells in a normal state without energy saving. Specifically, the base station automatically shuts down some or all functions of the base station or reduces the transmit power of the base station according to the preset automatic energy-saving strategy, for example, in combination with current and expected network service usage and other factors, so that part or all of the The cell in the normal state of the base station is converted into an energy-saving state, which neither loses user service quality nor reduces the power consumption of the base station.

A cell outage (Outage) 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 handle the cell failure accordingly.

In the prior art, there may be a conflict between the automatic energy saving function of the base station in the ad hoc network and the automatic processing function of cell failure.

Contents of the invention

Embodiments of the present invention provide a cell failure processing method and equipment.

The method provided by an embodiment of the present invention includes: the first base station receives an energy-saving activation message sent by the second base station when a cell failure occurs in the second cell, the energy-saving activation message is used to disable the energy-saving function, wherein the second cell belongs to the The second base station; the first base station converts the first cell from the energy-saving state to the normal state according to the energy-saving activation message, wherein the first cell belongs to the first base station, and the second cell is responsible for the first cell Covering an alternative cell; or, the first base station keeps the third cell in a normal state according to the energy saving activation message until it knows that the cell failure of the second cell has been resolved, wherein the third cell is subordinate to the first base station, and the second cell is subordinate to the first base station. The second cell is a cell that undertakes coverage replacement for the third cell.

The method provided by an embodiment of the present invention includes: a method for processing cell failure, which is characterized in that it includes: the first base station receives a notification message sent by the second base station to indicate that a cell failure occurs in the second cell, wherein the second cell Subordinate to the second base station; the first base station converts the first cell from the energy-saving state to the normal state according to the notification message, wherein the first cell is subordinate to the first base station, and the second cell is the first cell The cell undertakes to cover the replaced cell; or, the first base station keeps the third cell in a normal state according to the notification message until it knows that the cell failure of the second cell has been resolved, wherein the third cell is subordinate to the first base station, and the The second cell is the cell that undertakes coverage substitution for the third cell.

The method provided by an embodiment of the present invention includes: when the integrated reference point management device finds that a cell failure occurs in the second cell, the integrated reference point management device enables the first base station to convert the first cell from the energy-saving state to the normal state through the network management northbound interface , wherein the first cell is subordinate to the first base station, and the second cell is a cell that undertakes coverage replacement for the first cell; or, when the integrated reference point management device finds that a cell failure occurs in the second cell, the integrated reference point The point management device maintains the third cell in a normal state through the northbound interface of the network management until it is informed that the cell failure of the second cell has been resolved, wherein the third cell is subordinate to the first base station, and the second cell is responsible for the third cell. Alternate cells are covered.

The base station provided by an embodiment of the present invention includes: the sending module is used to receive the notification that the cell failure occurs in the second cell; the processing module is used to convert the first cell from the energy saving state to the normal state, wherein the first cell is subordinate In the base station, the second cell is a cell that undertakes coverage replacement for the first cell; or, the processing module is used to maintain the third cell in a normal state until the failure of the second cell is resolved, wherein the third cell is subordinate to In the base station, the second cell is a cell that undertakes coverage replacement for the third cell.

The device provided by an embodiment of the present invention includes: the receiving module is configured to determine that a cell failure occurs in the second cell;

The processing module is used to notify the first base station to convert the first cell from the energy-saving state to normal through the network management northbound interface, wherein the first cell is subordinate to the first base station, and the second cell is responsible for replacing the coverage of the first cell cell state; or, the processing module is used to notify the first base station through the network management northbound interface to keep the third cell in a normal state until it is known that the cell failure of the second cell has been resolved, wherein the third cell is subordinate to the first base station , the second cell is a cell that undertakes coverage replacement for the third cell.

Applying the method or device provided by the embodiments of the present invention can avoid loopholes in the network coverage caused by the cell failure of the second cell responsible for the network coverage of the first cell itself in an energy-saving state.

Description of drawings

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

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

FIG. 2 is a flow chart of a method for cell failure processing provided by another embodiment of the present invention;

FIG. 3 is a flow chart of a method for cell failure processing provided by another embodiment of the present invention;

FIG. 4 is a flow chart of a method for cell failure processing provided by another embodiment of the present invention;

FIG. 5 is a schematic diagram of a base station provided by another embodiment of the present invention;

Fig. 6 is a schematic diagram of equipment provided by another embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figure 1(a), when the self-organizing network in the embodiment of the present invention adopts a distributed implementation architecture, cell A (cell A) is subordinate to base station 1 (eNB1), and cell B (cell B) is subordinate to base station 2 ( eNB2), the X2 interface is between eNB1 and eNB2. Among them, when cell A is in the energy-saving state, cell B can assume the network coverage of cell A, that is, cell B is a cell that can provide coverage replacement for cell A, and cell B can be referred to as a replacement cell for cell A. That is to say, when the automatic energy saving function of eNB1 subordinate to cell A is turned on, according to the policy setting of the energy saving function, cell A will be in the energy saving state (that is, enter the energy saving state) at a certain moment, and cell B can take over and cover cell A network of.

As shown in Figure 1(b), when the self-organizing network in the embodiment of the present invention adopts a centralized architecture, cell A (cell A) is subordinate to base station 1 (eNB1), and cell B (cell B) is subordinate to base station 2 (eNB2). ), and eNB1 and eNB2 are managed by the same integrated reference point management device (IRP Manager). In other embodiments of the present invention, the network management system may refer to the IRP Manager, or may be a collection of multiple devices including the IRP Manager. Among them, eNB1 is located inside the integrated reference point agent (IRP Agent1), and can communicate through the network management northbound (itf-N) interface between IRP Agent and network management system, eNB2 and IRP Agent2 are two independent devices, eNB2 and IRP Agent2 The network element manager (Element Manager) communicates, so that the communication between 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. The details of the communication between the eNB and the network management system through the IRP Agent will not be described in detail in each embodiment of the present invention, but will be located in The communication between the eNB inside the IRP Agent and the IRP Manager and the communication between the IRP Agent and the IRP Manager through the external device IRP Agent are collectively referred to as the communication between the eNB and the network management system through the itf-N interface.

An embodiment of the present invention provides a method for processing cell failure under a distributed architecture. Taking FIG. 1(a) as an example, it is assumed that when cell A is in an energy-saving state, cell B assumes the network coverage of cell A. When a cell failure occurs in cell B, cell A switches from an energy-saving state to a normal state, so that cell A resumes its original coverage, thereby reducing the impact of cell failure on the network coverage in the replacement cell. Furthermore, before the cell failure problem of cell B is resolved, cell A will not re-enter energy saving according to the preset automatic energy saving strategy. In addition, if a cell failure occurs in cell B when cell A is in a normal state, cell A will not enter the energy-saving state according to the original energy-saving policy setting until the cell failure problem of cell B is resolved (that is, the cell failure ends). Therefore, loopholes in network coverage, or the ping-pong effect of a takeover who constantly changes the network coverage of a cell can be avoided.

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

S210, eNB2 detects that a cell failure occurs in cell B.

S220, eNB2 sends a first notification message to eNB1.

For example, eNB2 sends the first notification message to all neighboring eNBs, eNB1 is one of the neighboring eNBs of eNB2, and can receive the first notification message.

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

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

Optionally, eNB2 may also send delay start time information in the first notification message or other messages. For example, the delay start time information includes waiting time information, and the waiting time information indicates the waiting time for eNB1 to start the state transition process of cell A after receiving the information. Assuming that the time corresponding to the waiting time information is T, eNB1 receives the delay After starting the time information, wait for a long time T, if it is not known that the cell failure of cell B has been resolved, then start the state conversion process for cell A, so that the energy-saving state of cell A is converted to a normal state. For another example, the delay start time information includes start time information, and the start time information indicates the time when eNB1 starts the state transition process of cell A. Assuming that the start time information corresponds to time t, eNB1 has not yet learned the state of cell B at time t. After the failure of the cell has been resolved, the state conversion process of cell A is started, so that the energy-saving state of cell A is converted to the normal state. The above processing method is applicable to the situation where cell A does not have high requirements on network coverage, for example, cell A is a non-important cell. After cell failure occurs, cell B may first try to recover by itself. If the problem of cell failure is solved within a period of time, there is no need to change the state of cell A, and the network coverage of cell A will not be greatly affected. If the problem of cell failure is not resolved within a period of time, eNB1 will switch cell A from the energy-saving state to the normal state to resume the original coverage.

S230, eNB1 receives the first notification message, and determines whether the cell that uses cell B as a substitute cell is in an energy-saving state. If there is the above-mentioned cell in the energy-saving state, execute S240; if there is the above-mentioned cell that is not in the energy-saving state, execute S250.

For example, eNB2 may send a first notification message to all neighboring eNBs, and eNB1 may learn that cell B has a cell failure according to the first notification message, and then obtain relevant information of each cell subordinate to eNB1 to determine whether there is a cell that can use cell B as Substitute cells, for example, obtain the relevant information of cell A to determine whether cell B is a substitute cell for cell A, and whether the above cells are currently in an energy-saving state.

S240, eNB1 converts the state of the cell that uses cell B as a substitute cell and is in the energy-saving state, and the state of the cell after conversion is a normal state.

For example, cell A is in the energy-saving state, and cell B assumes the network coverage of cell A, then eNB1 converts cell A from the energy-saving state to the normal state, so as to avoid the occurrence of cell A being in the energy-saving state and undertaking its network coverage. Cell failures lead to loopholes in network coverage.

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

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

Furthermore, before eNB1 knows that cell B's cell failure is over, cell A will not be allowed to re-enter energy saving according to the preset automatic energy saving strategy, that is, eNB1 will at least keep cell A in a normal state of non-energy saving until the cell B is determined. The failure of the cell is over, thereby avoiding loopholes in network coverage.

S250. Before the failure of the cell of cell B ends, the eNB1 keeps the cell that uses cell B as a substitute cell and is in a normal state in a normal state.

In this step, it is assumed that cell B is the replacement cell of cell C, that is, it can undertake the network coverage of cell C. When cell failure occurs in cell B, cell C is not in the energy saving state, then eNB1 saves the received cell failure indication and cell identity, and prevents cell C from following the preset automatic energy saving strategy before the cell failure of cell B ends Enter energy saving, that is, eNB1 can at least keep cell C in a normal state until it is determined that the cell failure of cell B is over. In the above processing method, eNB1 regards the priority of the cell failure indication as higher than the priority of the preset automatic energy saving strategy. For example, when there is a cell identity of cell B and the corresponding cell failure indication, other automatic energy saving strategies are no longer considered , keep cell C in a normal state. When it is known that the cell failure of cell B is over, eNB1 clears the remaining cell failure indication, and checks whether it is necessary to convert cell A to an energy-saving state according to the preset automatic energy-saving strategy. The above-mentioned processing method avoids that when cell B, which can assume the network coverage of cell C, fails, cell C enters energy saving and causes network coverage loopholes, or the network coverage of cell C is constantly changing between cell C and cell B. The ping-pong effect.

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

S510. When cell A enters energy saving or prepares to enter energy saving, eNB1 to which cell A belongs sends a second notification message to eNB2 to which cell B, a neighboring cell of cell A, belongs.

For example, eNB1 sends a second notification message to all eNBs that are subordinate to cells adjacent to cell A, and then eNB2 may receive the second notification message.

For another example, eNB1 may obtain the relevant information of cell A to determine which cell or cells can be used as a substitute cell for cell A, and then eNB2 sends a second notification message to the above cell.

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

In this step, when cell A is preparing to enter energy saving, eNB1 sends a second notification message, then cell A enters energy saving immediately after eNB1 sends the second notification message or enters energy saving after waiting for a period of time. During the waiting period, eNB1 can complete Processing related to cell A entering energy saving.

S520, the eNB2 to which cell B is subordinate receives the second notification message, and makes cell B assume the network coverage of cell A.

Since eNB1 may send a second notification message to all eNBs that are subordinate to cells adjacent to cell A, eNB2 may determine in this step whether the cells subordinate to eNB2 include a cell that can serve as a substitute cell for cell A.

S530. The eNB2 detects that a cell failure occurs in the cell B.

S540, eNB2 sends an energy-saving activation message to eNB1 to which cell A that can use cell B as a substitute cell belongs, and the message is used to notify eNB1 to convert cell A to a normal state.

For example, if eNB2 has saved cell A in an energy-saving state before detecting cell failure in cell B, it can determine that the cell that needs to be awakened is cell A.

For another example, eNB2 can acquire information about cell B to determine which cell or cells can use cell B as a substitute cell, and then eNB2 sends an energy-saving activation message to the above-mentioned cell, or eNB2 sends an energy-saving activation message to the above-mentioned cell that is in an energy-saving state .

Optionally, the energy saving activation message is a cell activation request (CELLACTIVATION REQUEST) message including the cell identity (Served Cells ToActivate) and activation reason (Reason For Activation) information of the cell to be activated. For example, when eNB2 determines according to the relevant information of cell B that cell A needs to be activated due to cell failure in cell B, the Served Cells To Activate information is the cell identity of cell A, and the Reason For Activation information is the cell failure cause value (CO), namely The cause value indicates that the reason for activating the cell is cell failure. Optionally, ReasonFor Activation can be an enumeration type, for example, in addition to the cell failure cause value, it can also include a load balancing reason value (LB), which is used to indicate that the reason for activating the energy-saving cell is load balancing, that is, eNB2 determines that it is determined by When a certain cell is activated due to load balancing reasons, an energy saving activation message may be sent to the base station to which the cell belongs. The energy saving activation message includes the cell identity of the cell and the value of the load balancing reason.

Optionally, eNB2 may also send delay start time information in the energy saving activation message, which is used to indicate the waiting time for eNB1 to start the state transition process of cell A after receiving the information.

S550. The eNB1 receives the energy-saving activation message, so that cell A switches from the energy-saving state to the normal state.

For example, eNB1 determines whether the cell corresponding to the cell ID of the cell to be activated is in an energy-saving state according to the activation reason in the second notification message, and if so, converts the state of cell A to a normal state, thereby avoiding the occurrence of an energy-saving state due to cell A itself being in an energy-saving state. , and the cells responsible for its network coverage have cell failures, which lead to the problem of loopholes in network coverage.

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

Further, before eNB1 is not informed that cell B's cell failure is over, keep cell A in a normal state.

In the above-mentioned embodiment, when the cell failure occurs in cell B, eNB2 may notify other eNBs of the cell failure occurrence in cell B, and the eNB receiving the notification determines which cells to perform which processing. eNB2 can also determine which cells to perform which processing, and then notify the eNB to which the cell belongs to activate processing, for example, eNB1 wakes up cell A in the energy-saving state through an energy-saving activation message, so that the state of cell A is converted to a normal state. When one base station in eNB1 and eNB2 can determine which cells are to be processed for cell failure, the automatic energy saving function in the network and the coordinated processing of the scene of cell failure can be realized.

The base station in each embodiment of the present invention can determine the substitution relationship between cells by querying an internal database or other external devices with a database function. The external equipment with database function includes the network management system (IRP Manager). For the base station, the query message including the cell ID of the cell to be queried can be sent to the network management system through the itf-N interface, and then the query result provided by the network management system can be received. Thereby determining the substitution relationship between the cells. For the network management system, the substitution relationship between cells can be determined according to internal data without using interface messages. In this case, the network management system manages the base stations more conveniently, can make the information obtained by different base stations consistent, and supports the operator to configure and update the cell replacement relationship in the network management system. If the internal database of the base station saves the substitution relationship between cells, the base station can determine the substitution relationship between cells without going through the interface cell, thereby reducing the occupation of air interface resources and allowing operators to directly configure or update the Cell substitution relationship.

For example, another embodiment of the present invention provides a method for a base station to learn the substitution relationship between cells. In this embodiment, the substitution relationship between cells refers to the situation that the cell to be queried can be used as a substitute cell for other cells. The following assumes that the cell to be queried is cell B for illustration.

Optionally, the base station in this embodiment receives the neighbor cell relation information related to the energy saving of cell B, that is, the neighbor cell relation information ESCompensatedCellRelation of cell B, and the information includes the cell information (esCompensatedCell ). For example, if the esCompensatedCell is the cell identification information of cell A, the base station determines that cell B can be used as a substitute cell for cell A. If the ESCompensatedCellRelation information queried by the base station includes cell identification information of multiple cells, the base station determines that cell B can be used as a substitute cell for these cells.

Optionally, the base station in this embodiment receives neighbor cell relation information related to cell B, that is, cell B neighbor cell relation information EUtranRelation. The EUtranRelation information may include adjacent cell information (adjacentCell) of cell B, indicating that there is an adjacent relationship between the cell corresponding to the adjacent cell information and cell B, and is also used to indicate that cell B is a substitute cell for the cell corresponding to the adjacent cell information. For example, if the adjacent cell information includes the cell identifier of cell A, the base station determines that cell B can be used as a substitute cell for cell A. If the base station inquires that the adjacent cell information includes cell identification information of multiple cells, the base station determines that cell B can be used as a substitute cell for these cells.

Optionally, the base station in this embodiment receives cell attribute information related to cell B, that is, cell attribute information EUtranGenericCell of cell B, and the EUtranGenericCell information includes compensated cell list information (compensatedCellList). The compensatedCellList information indicates which cells cellB can be used as a substitute cell. For example, the compensatedCellList information includes cell information (such as cell identification information) of cell A, and the base station determines that cell B can be used as a substitute cell for cell A. If the base station finds that the compensatedCellList information related to cell B includes cell information (such as cell identification information) of multiple cells, the base station determines that cell B can be used as a substitute cell for these cells.

Another embodiment of the present invention provides a method for a base station to learn the substitution relationship between cells. This embodiment is different from the above-mentioned embodiment in which the base station learns the substitution relationship between cells. The substitution relationship between cells in this embodiment refers to other cells. It can be used as a substitute cell for the cell to be queried. The following assumes that the cell to be queried is cell A for illustration.

Optionally, the base station in this embodiment receives the neighbor cell relation information related to the energy saving of cell A, that is, the neighbor cell relation information ESCompensatingCellRelation of cell A, and the ESCompensatingCellRelation information includes cell information of a cell that can be used as a substitute cell of cell A ( esCompensatingCell). For example, if the esCompensatingCell is the cell identification information of cell B, the base station determines that cell B can be used as a substitute cell for cell A. If the ESCompensatingCellRelation information queried by the base station includes cell identification information of multiple cells, the base station determines that these cells can all be used as cell A's substitute cells.

Optionally, the base station in this embodiment receives the neighbor cell relationship information related to cell A, that is, the neighbor cell relationship information EUtranRelation of cell A, and the EUtranRelation information includes the neighbor cell information (adjacentCell) of cell A, indicating that the adjacent cell information corresponds to There is an adjacent relationship between the cell and cell A, and it is also used to indicate that the cell corresponding to the adjacent cell information can be used as a substitute cell for cell A. For example, the adjacentcell information includes the cell identification information of cell B, and the base station determines that cell A is a substitute cell for cell B. If the base station finds that the adjacent cell information of cell A includes cell identification information of multiple cells, the base station determines that these cells can all be used as cell A replacement cells.

Optionally, the base station in this embodiment receives cell attribute information related to cell A, that is, cell attribute information EUtranGenericCell of cell A, and the information includes compensating cell list information (compensatingCellList). The compensatingCellList information indicates which cells can be used as cell A's replacement cells. For example, the compensatingCellList information includes cell information (such as cell identification information) of cell B, and the base station determines that cell B can be used as a substitute cell for cell A. If the base station finds out that the compensatingCellList information includes cell information (such as cell identification information) of multiple cells, the base station determines that all of the above cells can be used as cell A replacement cells.

In the above-mentioned embodiment of providing a method for the base station to know the substitution relationship between cells, the base station that inquires the substitution relationship can query the information of the cell subordinate to itself according to the identity of the cell subordinate to itself, or can query the information of the cell subordinate to it according to the information of other cells. information of other cells, and determine whether there is a substitution relationship between two cells, the methods provided in the above embodiments can be flexibly combined with the cell failure processing methods provided in other embodiments of the present invention.

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

Optionally, eNB1 in this embodiment receives neighbor cell relationship information (EUtranRelation) related to cell A, and the EUtranRelation information includes cell A's energy saving compensation cell information (isEScompensateCell), which is used to indicate whether cell A is allowed to perform energy saving. For example, the isEScompensateCell information received by eNB1 indicates that cell A is allowed to save energy, then eNB1 can judge whether the condition for cell A to enter energy saving is met according to the preset automatic energy saving strategy, and if so, eNB1 can convert cell A from the normal state to the energy saving state , so that cell A enters energy saving.

Optionally, eNB1 in this embodiment receives cell attribute information (EUtranGenericCell) related to cell A, and the EUtranGenericCell information includes cell A allowed energy saving identification information (isESAllowed), which is used to indicate whether cell A is allowed to perform energy saving. For example, the isESAllowed information received by eNB1 indicates that cell A is allowed to save energy, then eNB1 can judge whether the conditions for cell A to enter energy saving are met according to the preset automatic energy saving policy, and if so, eNB1 can convert cell A from normal state to Energy-saving state, so that cell A enters energy-saving state.

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 can be regarded as a configuration related to energy saving formulated by the network management system. That is to say, in the initial configuration or updated configuration made by the network management system, not all the cells may be configured as cells capable of energy saving. Therefore, the network management system distinguishes cells capable of energy saving According to the result of the distinction, information indicating whether a certain cell is allowed to save energy is sent to the base station, so as to realize the convenient management of the base station by the network management system, so that the base station can know which cells can enter the energy saving mode when the base station judges that it meets the automatic energy saving strategy, and reduce the energy consumption of the base station. power consumption.

In addition, through the method for the base station to know the substitution relationship between the cells provided by other embodiments of the present invention, the base station can determine the replacement cell of the cell that is allowed to be energy-saving, and can also determine which cell or cells the cell that is not allowed to be energy-saving can be used as a substitute district.

This embodiment may be combined with the cell failure processing methods provided in other embodiments of the present invention. For example, after the base station determines that a certain cell can perform energy saving and enables the cell to enter energy saving, the base station can also perform the steps after the cell enters energy saving in other embodiments of the present invention, such as S510.

Another embodiment of the present invention provides a method for a base station to know whether the cell where the cell failure has occurred has ended the cell failure, wherein the base station initiates a query to the base station to which the cell where the cell failure occurs, and determines the cell according to the received feedback message Whether the failure of the cell is over, the above query can be realized by periodically sending a message for query, or by sending a message for query at a preset time, or by sending a message for query in the existing communication process Include query fields to implement.

This embodiment can be flexibly combined with the cell failure processing methods provided in other embodiments of the present invention. Taking how eNB1 knows the end of cell failure of cell B subordinate to eNB2 as an example, eNB1 can periodically send a query message to eNB2, and the query message is used to query whether the cell failure status of cell B is over. When eNB2 detects that cell B is no longer a cell failure, that is, cell B has restored the cell to be valid, it sends a feedback message, which is used to indicate that the cell failure of cell B is over. If eNB2 detects that cell B is still a cell failure, eNB2 may notify eNB1 that the cell failure of cell B is not over, or may not send a feedback message.

Another embodiment of the present invention also provides a method for the base station to know whether the cell where the cell failure has occurred has ended the cell failure. The notification of the end, that is, when the notification is not received, the base station regards the cell where the cell failure occurs as the cell where the problem of the cell failure has not been resolved. This embodiment can also be flexibly combined with the cell failure processing methods provided in other embodiments of the present invention, which will not be repeated here.

Taking the centralized architecture provided in Figure 1(b) as an example, another embodiment of the present invention also provides a cell failure processing method, which realizes the coordination of base station energy saving and cell failure processing through the unified management of base stations by the network management system . In this embodiment, it is described that the network management system obtains the optional situation that the cell failure occurs in the second cell by receiving the notification from eNB2. The network management system in this embodiment can also judge that the cell failure occurs in the second cell through the information saved by itself. The following No more details. As shown in FIG. 4 , this embodiment may include the following steps.

S810, eNB2 detects that a cell failure occurs in cell B.

S820. The eNB2 notifies the network management system of the occurrence of cell failure in cell B.

For example, eNB2 sends the third notification message to the network management system. Wherein, the third notification message includes the cell identity of the cell B where the cell failure occurs and the cell failure indication information, wherein 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 using cell B as the substitute cell is in an energy-saving state. If there is the above-mentioned cell in the energy-saving state, execute S840; if there is the above-mentioned cell that is not in the energy-saving state, execute S850.

Wherein, the network management system can determine whether the cell that uses the cell B corresponding to the cell identifier in the third notification message as the substitute cell is in an energy-saving state according to the substitution relationship between the cells saved by itself and the state information of the cell.

The network management system in this step may determine that there are multiple sub-districts that have a substitution relationship with cell B and are in an energy-saving state, or multiple sub-districts that have a substitution relationship with cell B and are in a normal state, then the network management system can target at the same time or one by one These cells perform S840 or S850 accordingly.

S840. The network management system wakes up the cell that uses cell B as a substitute cell and is in an energy-saving state.

For example, cell B can assume the network coverage of cell A. When cell B fails, cell A is in an energy-saving state. When the network management system determines that cell B has a cell failure, the network management system wakes up cell A, which can avoid the problem of network coverage loopholes caused by the cell failure of the cell responsible for its network coverage due to the fact that cell A itself is in an energy-saving state.

Optionally, the network management system may send 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 the meaning of disabling the energy saving function of a certain cell, the base station can determine that all cells subordinate to the base station need to be processed by default by receiving the message. If the message also carries an object identifier for disabling 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 it is that a cell failure occurs in another cell, so that the base station receiving the message knows the reason for disabling energy saving. For example, the network management system sends a message including energy-saving disabling information DisableES to eNB1 through the itf-N interface. If the energy-saving disabling information includes the cell identity of the cell A for which the energy-saving function is prohibited, eNB1 learns to convert cell A to a normal state, and at least keeps cell A in a normal state until it is informed that the cell B in which the cell failure has occurred has resolved the cell failure problem . If the energy saving disabling information includes the base station identifier, eNB1 can know that at least all cells subordinate to eNB1 will be kept in a normal state until it is known that the cell B where the cell failure occurs has solved the cell failure problem. When eNB1 receives the message containing the energy-saving disabling information DisableES, if only some cells in the cells subordinate to eNB1 are in the energy-saving state, eNB1 first changes the state of the above cells to the normal state, and then keeps the cells subordinate to eNB1 in the normal state Until it is known that the cell B where the cell failure has occurred has solved the problem of the cell failure, so as to avoid loopholes in network coverage.

Optionally, the network management system may also carry energy-saving disabling information through the wake-up message. For example, the network management system sends a wake-up message to eNB1 through the itf-N interface. The wake-up message includes energy-saving disable information DisableES. Optionally, the energy-saving disable information includes cell ID or base station ID information for which energy-saving function is disabled. In addition, the wake-up message also includes reason information for disabling the energy-saving function. If the network management system sends the cell identity of cell A and the cause of cell failure to eNB1, then eNB1 knows that the state of cell A needs to be changed to a normal state due to cell failure in other cells, and at least keep cell A in a normal state until it is informed The cell where the cell failure occurred has resolved the cell failure problem, thereby avoiding holes in the network coverage. If the network management system sends the base station identity of eNB1 to which cell A belongs and the value of the cause of cell failure to eNB1, then eNB1 knows that due to cell failure in other cells, it needs to at least keep the status of all cells subordinate to eNB1 in a normal state until it is notified that it occurs The cell failure of the cell has solved the problem of cell failure. When eNB1 receives the wake-up message, if only some of the cells subordinate to eNB1 are in the energy-saving state, eNB1 first changes the state of the above cells to the normal state, and then keeps the cells subordinate to eNB1 in the normal state until it is notified that a cell failure occurs cell B has solved the problem of cell failure, so as to avoid loopholes in network coverage.

Optionally, the above wake-up message also includes configuration parameter information, that is, the network management system notifies eNB1 of the configuration parameters related to cell A, so that eNB1 completes the modification of the configuration parameters related to cell A, so that after cell A is awakened, it can realize Better coverage. If the wake-up message does not include configuration parameter information, cell A may adopt the original configuration parameter information, or receive a configuration parameter modification command including the new configuration parameters of cell A.

S850. The network management system notifies the cell B that cell failure occurs to a cell that uses cell B as a substitute cell and is in a normal state.

Assuming that cell B can undertake the network coverage of cell C, and cell C is not in the energy-saving state when cell B fails, the network management system notifies cell B of cell failure to eNB1 of cell C, and eNB1 is in cell B Before the end of the cell failure, cell C will not enter the energy saving according to the preset automatic energy saving strategy, that is, eNB1 can at least keep cell C in the normal state of non-energy saving until it is determined that the cell failure of cell B is over, so as to avoid loopholes in network coverage , or the ping-pong effect of the network coverage of cell C constantly changing the takeover between cell C and cell B. Wherein, the processing manner of eNB1 is similar to the processing manner of S250 in other embodiments of the present invention, and will not be repeated here.

In this step, the network management system can adopt the processing method of sending the energy-saving disable information in S840 above. For example, the energy-saving disable information includes the cell identity of cell C, so that eNB1 knows that cell C needs to be kept in a normal state at least until cell failure occurs in other cells. It is known that the cell failure of cell B has been resolved, and will not be described in detail here.

The method for the base station to know whether the cell where the cell failure occurred has ended the cell failure provided by other embodiments of the present invention can also be combined with this embodiment, or the network management system sends a query message to eNB2 and receives a feedback message, or the network management system receives eNB2 Then, the network management system notifies eNB1 so that eNB1 can know the end of the cell failure of cell B in time, and unblock cell A from entering energy saving.

Another embodiment of the present invention also provides a method for enabling energy saving in a cell. This embodiment is applicable to various scenarios where the network management system enables the energy saving function of a cell in a normal state, including in combination with the centralized architecture provided by other embodiments of the present invention. In the processing method of cell failure. For example, in S840 or S850, eNB1 disables the cell energy saving of cell A, even though cell A remains in a normal state. Next, if eNB1 receives the energy-saving activation information, it can resume using the automatic energy-saving policy to judge whether cell A can enter energy-saving, so that cell A has the opportunity to re-enter energy-saving.

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

Optionally, the network management system may also carry energy-saving activation information through the de-awakening message. For example, the network management system sends a de-awakening message to eNB1 through the itf-N interface. The de-awakening message includes energy-saving enabling information EnableES, and the energy-saving enabling information includes cell identification or base station identification information for enabling the energy-saving function. In addition, the de-waking message also includes reason information for enabling the energy-saving function. If the network management system sends the cell identity of cell A and the value of the cause of cell failure resolved to eNB1, then eNB1 knows that it is not necessary to continue to keep cell A in a normal state due to cell failure in other cells. If the network management system sends the base station identity of eNB1 to which cell A belongs and the value of the reason why the cell failure has been resolved to eNB1, then eNB1 knows that it is not necessary to continue to maintain the status of all cells subordinate to eNB1 in a normal state due to cell failure in other cells .

In this embodiment, the base station to which the cell in the normal state belongs can restore the energy saving function of the cell in time, so that the cell has an opportunity to enter energy saving as soon as possible and reduce the power consumption of the base station.

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

In this embodiment, cell B can assume the network coverage of cell A. When cell A is in the energy-saving state and cell B fails, the network management system wakes up cell A by sending a wake-up message to the eNB1 to which cell A belongs. When the wake-up message does not include configuration parameter information, eNB1 receives a configuration parameter modification command, and the configuration parameter modification command includes a configuration parameter related to cell A and a modification reason for the configuration parameter. Wherein, the modification reason may be a reason value indicating cell failure, or a reason value different from a modification caused by a non-cell failure reason. cell B) When the cell failure occurs and the configuration parameters are modified, one of the identifiers is adopted uniformly, so as to distinguish it from the situation where the configuration parameters are modified due to other reasons. eNB1 also saves the modified configuration parameter, and identifies the modification reason of the configuration parameter accordingly. In this way, when eNB1 learns that the cell where the cell failure has occurred has ended, it can restore the configuration parameters related to cell A that have been modified due to the cell failure of cell B to the original configuration parameters that were not modified, so as to realize the configuration parameters related to the cell. The configuration parameters can be quickly restored to reduce the impact of the cell (such as cell A) due to cell failure in other cells (such as cell B).

As shown in FIG. 6 , another embodiment of the present invention provides a base station eNB1 , where the base station includes a sending module 1100 and a processing module 1200 . Among them, the sending module 1100 is used to receive the notification of cell failure in the second cell, and the processing module 1200 is used to convert the first cell from the energy-saving state to the normal state, wherein the first cell belongs to eNB1, and the second cell is the first cell. The cell is responsible for covering the alternate cell, and optionally, the first cell is kept in a normal state. Alternatively, the processing module 1200 is configured to keep the third cell in a normal state until the failure of the second cell is resolved. Wherein, the third cell is subordinate to eNB1, and the second cell is a cell that undertakes coverage replacement for the third cell.

Optionally, the sending module 1100 is specifically configured to receive the 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 the cell identity of the second cell and activation cause information, and the activation cause information includes a cell failure cause value. For example, the second cell is subordinate to the second base station, and the energy saving activation message is sent by the second base station.

Optionally, the base station further includes a receiving module 1300, configured to receive delayed start time information, where the delayed start time information includes waiting duration information. The processing module 1200 is further configured to start the 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 start the state transition process 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 undertakes 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, after the receiving module 1300 receives a notification that a cell failure occurs in the second cell, determine that the second cell is a cell that undertakes coverage replacement for the first cell.

Optionally, the sending module 1100 is further configured to send the first cell to the first cell before the receiving module 1300 receives the notification that the second cell fails and after the processing module 1200 determines that the second cell is a cell that assumes coverage replacement for the first cell. The cell identifier and cell energy saving indication information, 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 undertakes coverage replacement for the first cell. For example, the receiving module 1100 receives the neighbor cell relationship information ESCompensatingCellRelation of the first cell, or the energy saving compensation cell information EUtranRelation, or the cell attribute information EUtranGenericCell, the above neighbor cell relationship information or the energy saving compensation cell information or the cell attribute information carries the information of the second cell. Identification information.

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

Optionally, the receiving module 1100 is also configured to receive a configuration parameter modification command, which includes the configuration parameters of the first cell and the modification reason of the configuration parameter, and the modification reason is the cell failure reason value, or the modification caused by a non-cell failure reason Reason value for the difference.

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

The base station provided by this embodiment can avoid loopholes in the network coverage caused by the cell failure of the second cell responsible for the network coverage of the first cell itself in the energy-saving state.

As shown in FIG. 6 , another embodiment of the present invention provides a device, and the device includes a receiving module 3100 and a processing module 3200 . The receiving module 3100 is used to determine that a cell failure occurs in the second cell, for example, receiving a cell identifier of the second cell and cell failure indication information indicating that a cell failure occurs in the second cell, and the processing module 3200 is used to notify the first base station through the network management northbound interface The first cell is converted from the energy-saving state to the normal state, wherein the first cell is subordinate to eNB1, and the second cell is a cell that undertakes coverage replacement for the first cell. Optionally, the first cell is kept in the normal state. Or it is used to notify the first base station to keep the third cell in a normal state through the northbound interface of the network management until it knows that the cell failure of the second cell has been resolved, wherein the third cell is subordinate to the first base station, and the second cell is responsible for the third cell Alternate cells are covered. Optionally, the cell failure indication information is sent by the second base station to which the second cell belongs.

Optionally, the processing module 3200 is configured to send reason information for disabling the energy saving function to the first base station through the network management northbound interface, where the reason information for disabling the energy saving function is a cell failure cause value. The processing module 3200 is further configured to send the object identifier for prohibiting the energy saving function to the first base station through the network management northbound interface, for example, the object identifier for prohibiting the energy saving function is the cell identifier of the first cell or the 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 disabling the energy-saving function or an identifier for disabling the energy-saving function, and the wake-up message also 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 parameters of the first cell and the modification reason of the configuration parameter, for example, the modification reason is a cell failure reason value, or Cause value to distinguish from modifications due to causes other than cell failure.

Optionally, the processing module 3200 is further configured to send indication information related to the first cell to the first base station before the receiving module 3100 receives the cell identity of the second cell and the cell failure indication information indicating that the second cell has a cell failure , the indication information is used to indicate that the first cell is allowed to save energy. For example, the indication information is the energy saving compensation cell information isEScompensateCell in the neighbor cell relationship information EUtranRelation, or the 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 the end of cell failure of the second cell, and the processing module 3200 is further configured to send reason information for enabling the energy saving function to the first base station through the network management northbound interface, for example, the reason information for enabling the energy saving function The cause information is the value of the resolved cause of cell failure.

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

The device provided in this embodiment may be an IRP Manager. The device provided by the invention can avoid loopholes in the network coverage caused by the cell failure of the second cell responsible for the network coverage of the first cell itself in an energy-saving state.

For more optional methods of applying the device provided in the foregoing embodiments, reference may be made to the methods provided in other embodiments of the present invention, which will not be repeated here.

Those of ordinary skill in the art can understand that all or part of the steps in the method of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the storage Media, such as: ROM/RAM, disk, CD, etc.

The above are only preferred embodiments of the present invention, and it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as protection scope of the present invention.

Claims (19)

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.

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