WO2014153709A1

WO2014153709A1 - Base station energy saving method and apparatus and base station

Info

Publication number: WO2014153709A1
Application number: PCT/CN2013/073145
Authority: WO
Inventors: 肖登坤; 韩静
Original assignee: 华为技术有限公司
Priority date: 2013-03-25
Filing date: 2013-03-25
Publication date: 2014-10-02
Also published as: CN104303559B; CN104303559A

Abstract

Embodiments of the present invention provide a base station energy saving method and apparatus and a base station, and relate to the technical field of communications. The method comprises: a macro base station receiving an energy saving switching request sent by at least one pico-cell base station, each energy saving switching request carrying first parameter information; determining, according to the first parameter information and an energy saving switching condition, whether the at least one pico-cell base station satisfies the energy saving switching condition; and when the at least one pico-cell base station satisfies the energy saving switching condition, sending an energy saving switching command to the at least one pico-cell base station, so that the at least one pico-cell base station enters an energy saving state. In the present invention, a macro base station determines, according to first parameter information of at least one pico-cell base station and an energy saving switching condition, whether the at least one pico-cell base station can be switched to an energy saving state, which fully considers a load condition of the macro base station, so as to ensure that the macro base station can normally serves a user covered by the at least one pico-cell base station.

Description

Base station energy saving method, device and base station

The present invention relates to the field of communications technologies, and in particular, to a base station energy saving method, apparatus, and base station. Background technique

With the rapid development of smartphones, users are increasingly demanding 3G network services. In order to cope with the rapid growth of mobile data service traffic, operators have deployed a large number of macro base stations and small cell base stations to increase the overall service performance of 3G networks, so that users can enjoy high-speed data services. The large-scale deployment of macro base stations and small cell base stations can improve the overall service performance of 3G networks, but inevitably causes waste of energy. Therefore, how to avoid energy waste while improving service performance becomes an important issue.

In the prior art, when the network traffic of a base station (small cell base station) is low, the user is switched to another base station, and the base station itself enters a power-saving state, and when other base stations are congested or overloaded, The base station in the energy-saving state sends a working state wake-up indication, so that the base station in the energy-saving state enters an active state.

In the process of implementing the present invention, the inventor has found that the prior art has at least the following problems: In the prior art, the base station determines whether to enter the energy-saving state by judging the network traffic of the network, and does not consider the neighboring base stations. The load capacity, when the base station switches the user to the neighboring base stations, may affect the normal services of other base stations, and once other base stations are unable to carry the users of the base station, the user service may be delayed or even interrupted. Summary of the invention

In order to ensure the normal operation of the user service during the energy-saving handover process, the embodiment of the present invention provides a base station energy-saving method, device, and base station. The technical solution is as follows:

In a first aspect, a method for powering a base station is provided, where the method includes:

The macro eNB receives the energy-saving handover request sent by the at least one small cell base station, and each of the energy-saving handover requests carries the first parameter information, where the first parameter information includes at least: the total number of resource blocks occupied by the small-cell base station, and the small-cell base station Downlink transmission power, total number of users covered by the small cell base station, macro The downlink transmit power required by the base station to provide services for users covered by the small cell base station;

And the total number of users occupied by the small cell base station, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the macro base station is a user covered by the small cell base station, according to the total number of resource blocks occupied by the small cell base station of each small cell base station Providing a downlink transmit power and a power-saving handover condition required by the service, and determining whether the at least one small cell base station satisfies the energy-saving handover condition;

And transmitting, by the at least one small cell base station, a power saving handover command to the at least one small cell base station, so that the user covered by the at least one small cell base station switches to the macro base station, when the user switches At the end, the at least one small cell base station enters a power saving state.

With reference to the first aspect, in a first possible implementation manner of the embodiment of the present invention, after the at least one small cell base station meets the energy saving switching condition, after sending the energy saving switching command to the at least one small cell base station, The method also includes:

And receiving the second parameter information that is sent by the small cell base station in the power saving state, where the second parameter information includes: location information of the small cell base station in the energy saving state, total number of idle resource blocks, and small cell in the energy saving state. The downlink transmit power required by the base station to provide services for the user covered by the small cell base station in the energy-saving state;

Determining, according to the location information of the small cell base station in the energy-saving state, the total number of idle resource blocks, and the downlink transmit power and the working state switching condition required for the small cell base station in the energy-saving state to provide services for the user covered by the small cell base station, Whether the small cell base station in the energy-saving state satisfies the working state switching condition;

If the small cell base station in the energy-saving state satisfies the working state switching condition, the working state switching command is sent to the small cell base station in the energy-saving state, so that the small cell base station in the energy-saving state is switched from the energy-saving state to the working state.

With reference to the first aspect, in a second possible implementation manner of the embodiment of the present invention, the total number of resource blocks occupied by the small cell base station, the downlink transmit power of the small cell base station, and the small cell base station according to the small cell base station The method includes: a total number of users that are covered, a downlink transmit power and a power-saving handover condition that are required by the macro-base station service to provide a service for the user that is covered by the small-cell base station, and the method further includes:

When the at least one small cell base station does not satisfy the power saving handover condition, reducing the number of the at least one small cell base station until the reduced number of small cell base stations satisfy the energy saving switching condition, to the reduced number of The small cell base station sends a power-saving handover command, so that the reduced number of d, the user covered by the cell base station is switched to the macro base station, and when the user handover ends, the quantity is reduced. The small cell base station enters a power saving state.

With reference to the first aspect, in a third possible implementation manner of the embodiment of the present invention, the power saving switching condition is that a total number of idle resource blocks of the macro base station is greater than a total number of occupied resource blocks of the at least one small cell base station, and the macro base The downlink transmit power required by the station to provide services for the user covered by the at least one small cell base station is smaller than the downlink transmit power of the at least one small cell base station.

With reference to the first aspect, in a fourth possible implementation manner of the embodiment of the present invention, the second parameter information that is sent by the small cell base station in the power saving state is received, and the second parameter information includes: After the location information of the small cell base station, the total number of the idle resource blocks, and the downlink transmit power required by the small cell base station in the energy-saving state to provide the service to the user in the energy-saving small cell base station, the method further includes:

Determining, according to the location information of the macro base station serving user and the location information of the small cell base station in the energy saving state, whether the number of users covered by the small cell base station in the energy saving state is greater than a preset value;

Correspondingly, according to the location information of the small cell base station in the energy-saving state, the total number of idle resource blocks, and the small cell base station in the energy-saving state, the downlink transmit power and the working state switch required for providing services for the user covered by the small cell base station The condition is: determining whether the small cell base station in the energy-saving state meets the working state switching condition, including:

When the number of users covered by the small cell base station in the energy-saving state is greater than a preset value, the location information of the small cell base station in the energy-saving state, the total number of idle resource blocks, and the small cell base station in the energy-saving state are the small cells. The downlink coverage power and the working state switching condition required by the user covered by the base station are provided, and it is determined whether the small cell base station in the energy-saving state satisfies the working state switching condition.

With reference to the first aspect, in a fifth possible implementation manner of the embodiment of the present invention, the working state switching condition is that the total number of resource blocks used by the macro base station to provide services for a user covered by a small cell base station in a power saving state is smaller than The total number of idle resource blocks of the small cell base station in the energy-saving state, and the downlink base station used by the macro base station to provide services for users covered by the small cell base station in the energy-saving state is greater than the small-cell base station in the energy-saving state The downlink transmit power used to provide services to the covered users.

With reference to the first aspect, in a sixth possible implementation manner of the embodiment of the present invention, the macro base station and the small cell base station perform signal transmission and reception through an Xm interface.

In a second aspect, a base station energy saving device is provided, where the device includes: The first receiving module is configured to receive the energy saving switching request sent by the at least one small cell base station, where each energy saving switching request carries the first parameter information, where the first parameter information at least includes: the total number of resource blocks occupied by the small cell base station, The downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the downlink transmit power required by the macro base station to provide services for users covered by the small cell base station;

a first determining module, configured to: according to the total number of resource blocks occupied by the small cell base station of each small cell base station, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the macro base station Determining, by the user that is covered by the small cell base station, the downlink transmit power and the energy-saving handover condition required by the service, and determining whether the at least one small cell base station satisfies the energy-saving handover condition;

a first sending module, configured to: when the at least one small cell base station meets the energy saving switching condition, send a power saving handover command to the at least one small cell base station, so that the user covered by the at least one small cell base station switches to the The macro base station, when the user handover ends, the at least one small cell base station enters a power saving state.

With reference to the second aspect, in a second possible implementation manner of the embodiment of the present invention, the device further includes: a second receiving module, configured to receive second parameter information sent by any small cell base station in a power saving state, where The second parameter information includes: at least: the location information of the small cell base station in the power saving state, the total number of idle resource blocks, and the small cell base station in the energy saving state, which is required for providing services for the user covered by the small cell base station in the energy saving state. Downlink transmit power;

a second determining module, configured to: according to the location information of the small cell base station in the energy saving state, the total number of idle resource blocks, and the downlink transmit power required by the small cell base station in the energy saving state to provide services for the user covered by the small cell base station And determining, by the working state switching condition, whether the small cell base station in the energy saving state satisfies the working state switching condition;

a second sending module, configured to: if the small cell base station in the energy-saving state meets the working state switching condition, send a working state switching command to the small cell base station in the energy-saving state, so that the small cell base station in the energy-saving state is The energy saving state is switched to the working state.

With reference to the second aspect, in a third possible implementation manner of the embodiment of the present invention, the device further includes: a quantity control module, configured to: when the at least one small cell base station does not meet the energy saving switching condition, reduce the And the number of the at least one small cell base station, until the reduced number of small cell base stations meet the energy saving handover condition, and sends a power saving handover command to the reduced number of small cell base stations, so that the reduced number of small cell base stations are covered The user switches to the macro base station, and when the user handover ends, the reduced number of small cell base stations enter a power saving state. With reference to the second aspect, in a fourth possible implementation manner of the embodiment of the present disclosure, the power saving switching condition is that a total number of idle resource blocks of the macro base station is greater than a total number of occupied resource blocks of the at least one small cell base station, and the macro base The downlink transmit power required by the station to provide services for the user covered by the at least one small cell base station is smaller than the downlink transmit power of the at least one small cell base station.

With reference to the second aspect, in a fifth possible implementation manner of the embodiment of the present invention, the device further includes: a third determining module, configured to: according to the location information of the macro base station serving user, and the small cell in the energy saving state Determining, by the location information of the base station, whether the number of users covered by the small cell base station in the energy-saving state is greater than a preset value;

Correspondingly, the second determining module is configured to: when the number of users covered by the small cell base station in the energy-saving state is greater than a preset value, according to the location information of the small cell base station in the energy-saving state, the total number of idle resource blocks, The small cell base station in the energy-saving state provides the downlink transmit power and the working state switching condition required for the user covered by the small cell base station to determine whether the small cell base station in the energy-saving state satisfies the working state switching condition.

With reference to the second aspect, in a sixth possible implementation manner of the embodiment of the present invention, the working state switching condition is that the total number of resource blocks used by the macro base station to provide services for a user covered by a small cell base station in a power saving state is smaller than The total number of idle resource blocks of the small cell base station in the energy-saving state, and the downlink base station used by the macro base station to provide services for users covered by the small cell base station in the energy-saving state is greater than the small-cell base station in the energy-saving state The downlink transmit power used to provide services to the covered users.

With reference to the second aspect, in a seventh possible implementation manner of the embodiment of the present invention, the macro base station and the small cell base station perform signal transmission and reception through an Xm interface.

In a third aspect, a base station is provided, where the base station includes: a receiver, a transmitter, and a processor, where the receiver is configured to receive an energy-saving handover request sent by at least one small-cell base station, where each energy-saving handover request carries a a parameter information, the first parameter information at least: the total number of resource blocks occupied by the small cell base station, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the macro base station being the small cell The downlink transmit power required by the user covered by the base station to provide the service;

The processor is configured to: according to the total number of resource blocks occupied by the small cell base station of each small cell base station, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the macro base station Determining, by the user that is covered by the small cell base station, the downlink transmit power and the energy-saving handover condition required by the service, and determining whether the at least one small cell base station satisfies the energy-saving handover condition; The transmitter is configured to: when the at least one small cell base station meets the energy saving handover condition, send a power saving handover command to the at least one small cell base station, so that the user covered by the at least one small cell base station switches to the The macro base station, when the user handover ends, the at least one small cell base station enters a power saving state.

The beneficial effects of the technical solutions provided by the embodiments of the present invention are:

The base station energy-saving method, the device, and the base station provided by the embodiment of the present invention receive the energy-saving handover request sent by the at least one small-cell base station by using the macro-base station, where each energy-saving handover request carries the first parameter information, where the first parameter information includes at least: The total number of resource blocks occupied by the small cell base station, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the downlink transmit power required by the macro base station to provide services for users covered by the small cell base station; The total number of resource blocks occupied by the small cell base station of each small cell base station, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the macro base station providing the user covered by the small cell base station Determining whether the at least one small cell base station satisfies the energy saving switching condition when the at least one small cell base station satisfies the energy saving switching condition; and when the at least one small cell base station satisfies the energy saving switching condition, to the at least one small cell base station Sending an energy saving switching command such that the at least one User small cell base station to the coverage of the macro base station handover, when the end user switches, said at least one small-cell base station saving state. According to the technical solution provided by the present invention, the macro base station determines, according to the first parameter information of the at least one small cell and the energy saving switching condition, whether the at least one small cell base station can switch to the energy saving state, fully considering the load condition of the macro base station, to ensure that After the user of the at least one small cell base station is handed over to the macro base station, the macro base station can provide services for the user covered by the at least one small cell, which does not affect the normal service of the small cell base station user or the normal service of the macro base station user. The overall energy consumption of the macro base station and the small cell base station is reduced, and the user communication experience and the throughput of the macro base station and the small cell base station are improved. DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

1 is a flowchart of a method for saving a base station according to an embodiment of the present invention;

2 is a flowchart of a method for saving a base station according to an embodiment of the present invention; 3 is a schematic structural diagram of a base station energy-saving device according to an embodiment of the present invention; and FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention. detailed description

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

1 is a flowchart of a method for power saving a base station according to an embodiment of the present invention. The execution entity of the embodiment of the present invention is a macro base station. Referring to FIG. 1, the method includes:

101: The macro base station receives the energy-saving handover request sent by the at least one small-cell base station, where each energy-saving handover request carries the first parameter information, where the first parameter information includes: at least: the total number of resource blocks occupied by the small-cell base station, and the small cell The downlink transmit power of the base station, the total number of users covered by the small cell base station, and the downlink transmit power required by the macro base station to provide services for the user covered by the small cell base station. In the embodiment of the present invention, each macro base station covers multiple The small cell base station, the macro base station and the small cell base station receive and transmit data in the form of radio waves, and the capability of the macro base station to receive and transmit radio waves is much higher than that of the small cell base station.

The power saving switching request is a request message that the small cell base station switches from the working state to the power saving state sent by the macro base station; the first parameter information is used by the macro base station to determine whether the small cell that sends the first parameter information can switch to the energy saving state. .

The resource block includes a virtual resource block and a physical resource block. In the communication process, the base station calculates a physical resource block corresponding to the virtual resource block according to the relationship between the virtual resource block and the physical resource block, and maps the user data to the physical resource block. on. The total number of resource blocks occupied by the small cell base station is the total number of physical resource blocks occupied by users served by the small cell base station. The downlink transmission power refers to the power used when the small cell base station transmits a signal to the user who provides the service to the small cell base station.

Preferably, when the small cell base station meets the preset condition of the small cell itself, the macro base station may send a power saving handover request, where the power saving handover request carries the first parameter information of the small cell base station, so that the macro base station receives the energy saving handover request. Then, it is determined according to the first parameter information whether the small cell base station can switch to the energy saving state. The preset condition may be that the number of users that provide services for the small cell base station is less than the preset number, or that the downlink transmit power of the small cell base station to provide services to the covered users is less than the preset power, and the embodiment of the present invention does not specifically limited.

102: The total number of resource blocks occupied by the small cell base station of each small cell base station, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the macro base station are Determining, by the user that is covered by the small cell base station, the downlink transmit power and the energy-saving handover condition required by the service, and determining whether the at least one small cell base station satisfies the energy-saving handover condition;

The macro base station acquires first parameter information of each small cell base station that sends the energy saving handover request according to the received energy saving handover request sent by the at least one small cell base station. The macro base station determines, according to each parameter in the first parameter information of each small cell base station and some parameters in the macro base station, whether the at least one small cell base station satisfies the energy saving switching condition by using the calculation or comparison means.

The power saving switching condition is used by the macro base station to determine whether at least one small cell base station that sends the energy saving switching request can switch to the power saving state. The energy-saving handover condition may be that the total number of resource blocks occupied by the at least one small-cell base station is smaller than the total number of resource blocks that are not used by the macro base station, for example, when the resource block occupied by the at least one small-cell base station is 10, the total number of unused resource blocks of the macro base station is 20 The macro base station may determine that the at least one small cell base station that sends the energy-saving handover request satisfies the energy-saving handover condition; the power-saving handover condition may further be that the downlink transmit power required by the at least one small-cell base station to provide services for the covered user is smaller than the macro base station is at least A downlink transmit power required by a user covered by a small cell base station to provide services, such as a downlink transmit power required for at least one small cell base station to provide services for a covered user is 50 mw, and the macro base station provides for a user covered by at least one small cell base station. When the downlink transmission power required by the service is 100 mW, the macro base station may determine that at least one small cell base station that transmits the energy saving handover request does not satisfy the energy saving switching condition. Preferably, the energy-saving handover condition includes that the total number of resource blocks occupied by the at least one small cell base station is smaller than the total number of resource blocks not used by the macro base station, and the downlink transmission power occupied by the at least one small cell base station is less than that of the at least one small cell base station. The covered user provides the downlink transmit power required by the service, so as to ensure that the macro base station has sufficient resource blocks after the handover to provide services for at least one small cell coverage user, and the switched macro base station and the at least one small cell base station are generally in energy. The consumption is less than the energy consumption before switching. The specific content of the energy-saving switching condition is not specifically limited in the embodiment of the present invention.

It should be noted that, when at least one small cell base station does not satisfy the energy saving handover condition, the macro base station does not send a power saving handover command to at least one small cell base station; or, the macro base station reduces the number of small cell base stations, and the selected part satisfies After the small cell with the energy-saving switching condition is sent to the small-cell base station that meets the energy-saving switching condition, the energy-saving switching condition is not limited in this embodiment of the present invention.

And transmitting, to the at least one small cell base station, a power saving handover command, so that a user covered by the at least one small cell base station switches to the macro base station, when the at least one small cell base station satisfies the power saving handover condition. When the user handover ends, the at least one small cell base station enters a power saving state. The power-saving handover command refers to a command that the macro base station sends to the small-cell base station to instruct the small-cell base station to switch from the working state to the power-saving state.

When the macro base station determines that the at least one small cell base station satisfies the energy saving handover condition according to the first parameter information, the macro base station may send the energy saving handover command to the at least one small cell base station through the interface between the macro base station and the small cell base station.

After receiving the power-saving handover command, the small-cell base station switches the user covered by the small-cell base station to the macro base station, so that the macro base station can provide services for the user covered by the small-cell base station that switches to the energy-saving state. After the small cell base station switches the user to the macro base station, the small cell base station turns off the function of providing the external service.

Optionally, after the at least one small cell base station is switched to the power saving state, the at least one small cell base station sends a power saving state message to the macro base station and the surrounding small cell base station, so that the macro base station and the surrounding small cell base station learn the at least one small cell base station. In the current state, some or all of the functional requests, such as the function request of the relay message, are no longer sent to the at least one small cell base station.

The base station energy-saving method provided by the embodiment of the present invention, the macro base station receives the energy-saving handover request sent by the at least one small-cell base station, and each energy-saving handover request carries the first parameter information, where the first parameter information includes at least: the small-cell base station The total number of occupied resource blocks, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the downlink transmit power required by the macro base station to provide services for users covered by the small cell base station; The total number of resource blocks occupied by the small cell base station of the small cell base station, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the macro base station required to provide services for users covered by the small cell base station And determining, by the downlink transmit power and the energy-saving handover condition, whether the at least one small cell base station satisfies a power-saving handover condition; and when the at least one small-cell base station satisfies the energy-saving handover condition, sending an energy-saving handover command to the at least one small-cell base station And causing the at least one small cell base station to cover The user switches to the macro base station, and when the user handover ends, the at least one small cell base station enters a power saving state. According to the technical solution provided by the present invention, the macro base station determines, according to the first parameter information of the at least one small cell and the energy saving switching condition, whether the at least one small cell base station can switch to the energy saving state, fully considering the load condition of the macro base station, to ensure that After the user of the at least one small cell base station is handed over to the macro base station, the macro base station can provide services for the user covered by the at least one small cell, which does not affect the normal service of the small cell base station user or the normal service of the macro base station user. The overall energy consumption of the macro base station and the small cell base station is reduced, and the user communication experience and the throughput of the macro base station and the small cell base station are improved. 2 is a flowchart of a method for power saving a base station according to an embodiment of the present invention. The execution entity of the embodiment of the present invention is a macro base station. Referring to FIG. 2, the method includes:

200: The small cell base station determines whether it meets the preset condition, and when the preset condition is met, sends a power saving switching request to the macro base station that covers the small cell base station, where the energy saving switching request carries the first parameter, and the first parameter information is at least The method includes: a total number of resource blocks occupied by the small cell base station, a downlink transmit power of the small cell base station, a total number of users covered by the small cell base station, and a downlink transmission required by the macro base station to provide services for users covered by the small cell base station Power

201: The macro base station receives the energy saving handover request sent by the at least one small cell base station;

Preferably, in the embodiment of the present invention, the macro base station and the small cell base station transmit and receive signals through the Xm interface, where the Xm interface is different from the existing interface, and the Xm interface is new in the macro base station and the small cell base station. Increased interface. The macro base station receives the energy-saving handover request sent by the at least one small-cell base station through the Xm interface, and acquires the first parameter information according to the energy-saving handover request.

202: The macro base station is configured according to the total number of resource blocks occupied by the small cell base station of each small cell base station, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the macro base station is the small cell. The base station coverage user provides the downlink transmit power and the energy-saving handover condition required by the service, and determines whether the at least one small cell base station satisfies the energy-saving handover condition, and if yes, step 204 is performed, if no, step 203 is performed;

Preferably, the power saving switching condition is that the total number of idle resource blocks of the macro base station is greater than the total number of occupied resource blocks of the at least one small cell base station, and the macro base station is required to provide services for users covered by the at least one small cell base station. The downlink transmit power is less than the downlink transmit power of the at least one small cell base station.

The energy saving switching condition can be expressed by the following formula (1):

N N

ΐ?β > \, Ρ β _ι y [ | J X, * \ β ^ , Ρ

Unused _ macro / used—smallcell—i ( ' ' | i ι / j i ( 1 ) i=l J L i =l =1

The PR _unused _ _macro is the total number of _macro base station idle resource blocks, PRB _{used sm} ; the total number of resource blocks _used by the cell base station i, n is the number of small cell base stations that receive the transmitted energy-saving handover request, and N is n transmit energy-saving. The total number of users covered by the handover requesting small cell base station is the downlink transmission power when the small cell base station provides the service to the user i, and /f is required after the user i that is covered by the small cell base station switches to the macro base station, and the macro base station provides the service. The downlink transmit power, is two design parameters, and η is the relationship and, that is, when the left part and the right part of the formula (1) η are simultaneously established, the at least one small cell base station satisfies the energy saving switching condition. The macro base station uses the total number of resource blocks occupied by the small cell base station of the small cell base station, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the downlink transmit power required by the macro base station to provide services for users covered by the small cell base station. Bringing in the above formula (1), if the result obtained by the calculation is 1, it can be determined that at least one small cell base station satisfies the energy saving switching condition; if the result obtained by the calculation is 0, it can be determined that at least one small cell base station does not satisfy the energy saving switching condition .

203: When the at least one small cell base station does not meet the power saving handover condition, the macro base station reduces the number of the at least one small cell base station, and performs step 202;

Specifically, when the at least one small cell base station does not satisfy the energy saving handover condition, reducing the number of the at least one small cell base station, until the reduced number of small cell base stations satisfy the energy saving handover condition, to the reduced number of small cells. The base station sends a power-saving handover command, so that the user covered by the reduced number of small cell base stations switches to the macro base station, and when the user handover ends, the reduced number of small-cell base stations enter a power-saving state.

Preferably, when the at least one small cell base station does not satisfy the power saving handover condition, the macro base station reduces one small cell base station from the at least one small cell base station, and the macro base station determines, by step 202, whether the reduced number of small cell base stations meet the energy saving handover. Condition, for the case where the energy-saving switching condition is not satisfied, the number of small-cell base stations is continuously reduced until the reduced-quantity small-cell base station satisfies the energy-saving switching condition.

204: When the at least one small cell base station satisfies the power saving handover condition, the macro base station sends a power saving handover command to the at least one small cell base station, so that the user covered by the at least one small cell base station switches to the macro base station When the user handover ends, the at least one small cell base station enters a power saving state;

When the macro base station determines that the at least one small cell base station satisfies the power-saving handover condition, the macro base station sends a power-saving handover command to the at least one small-cell base station, so that the at least one small-cell base station receives the energy-saving handover command, and the at least one small The user covered by the cell base station switches to the macro base station. When the user switch ends, at least one small cell base station enters a power saving state, and the macro base station provides services for users covered by at least one small cell base station entering the power saving state.

205: The macro base station receives the second parameter information sent by the small cell base station in the power saving state, where the second parameter information includes: at least: the location information of the small cell base station in the energy saving state, the total number of idle resource blocks, and the energy saving The downlink transmit power required by the small cell base station of the state to provide services for the user covered by the small cell base station in the energy-saving state;

The second parameter information is used by the macro base station to determine whether any small cell base station in the power saving state is No switch to working status.

The second parameter information may be sent to the macro base station periodically by the small cell base station in the power saving state, or may be triggered when the macro base station provides the service to meet certain preset conditions. The cell base station sends a second parameter acquisition command, so that the small cell base station in the energy-saving state sends the second parameter information to the macro base station after receiving the second parameter acquisition command. If the preset condition is that the number of users providing services by the macro base station exceeds the preset number 100, the macro base station sends a second parameter acquisition command to the small cell base station in the power saving state. In this regard, the embodiments of the present invention are not specifically limited.

And determining, according to the location information of the macro base station serving user and the location information of the small cell base station in the power saving state, whether the number of users covered by the small cell base station in the energy saving state is greater than a preset value;

The preset value is used to determine whether the macro base station determines that the small cell base station in the energy-saving state satisfies the working state condition.

The macro eNB obtains the coverage of the small cell base station according to the location information of the small cell base station in the power saving state, and determines the current coverage of the small cell base station in the energy saving state by the coverage of the small cell base station to which the location information of the user served by the macro eNB belongs. The number of users covered.

Comparing the number of users covered by the small cell base station in the energy-saving state with the preset value, it is possible to further determine the state change of the small cell base station in the energy-saving state.

It should be noted that, when the number of users covered by the small cell base station in the energy-saving state is less than or equal to the preset value, the macro base station continues to determine whether the number of users covered by the small cell base station in the energy-saving state is less than a preset value.

207: When the number of users covered by the small cell base station in the energy-saving state is greater than a preset value, the macro base station is configured according to the location information of the small cell base station in the energy-saving state, the total number of idle resource blocks, and the small-cell base station in the energy-saving state. The downlink transmit power and the working state switching condition required by the user that is provided by the small cell base station to provide a service, and determine whether the small cell base station in the energy-saving state satisfies the working state switching condition;

Preferably, the working state switching condition is that the total number of resource blocks used by the macro base station to provide services for users covered by the small cell base station in the power saving state is smaller than the total number of idle resource blocks of the small cell base station in the power saving state, and the macro base is used. The downlink transmit power used by the station to provide services for users covered by the small cell base station in the energy-saving state is greater than the downlink transmit power used by the small-cell base station in the energy-saving state to provide services for the covered users. The working state switching condition can be expressed by the following formula (2):

( 2 )

The PRi a ii is the total number of resource blocks used by the user covered by the small cell base station i of the user served by the macro base station, PR ^ — is the total number of idle resource blocks of the small cell base station i, and M is the small and medium cell of the user that the macro base station provides the service. The total number of users covered by the base station i is the downlink transmission power required by the user j covered by the small cell base station i of the user served by the macro base station, and Pj is the downlink transmission power required for the small cell base station i to provide the service for the user j, _η , Two design parameters, η is the relationship and, that is, when the formula to the left of η and the formula on the right are simultaneously established, the working conditions are satisfied.

The macro base station brings the parameters such as the total number of idle resource blocks of the small cell base station in the energy-saving state, and the downlink transmit power required for the small cell base station to provide services for the user covered by the small cell base station, to the above formula ( 2) If the result obtained by the calculation is 1, it can be determined that the small cell base station satisfies the working state switching condition; if the result obtained by the calculation is 0, it can be determined that the small cell base station does not satisfy the working state switching condition.

It should be noted that, when the small cell base station in the energy-saving state does not satisfy the working state switching condition, the macro base station does not send the working state switching condition to the small cell base station in the energy-saving state, and the small-cell base station in the energy-saving state still maintains the current status.

Steps 206-207 are: performing downlink service power and working state switching required for the service provided by the small cell base station in the energy-saving state for the user covered by the small cell base station according to the location information of the small cell base station in the energy-saving state, the total number of idle resource blocks, and the small cell base station in the energy-saving state. Condition, determining whether the small cell base station in the energy-saving state satisfies the working state switching condition.

208: If the small cell base station in the power saving state meets the working state switching condition, send a working state switching command to the small cell base station in the energy saving state, so that the small cell base station in the energy saving state is switched from the energy saving state to the working state. status.

The working state switching command refers to a command used by the macro base station to indicate that the small cell base station in the power saving state is switched from the power saving state to the working state.

If the small cell base station in the power saving state satisfies the working state switching condition, the macro base station sends a working state switching command to the small cell base station in the energy saving state.

After receiving the working state switching command, the small cell base station in the energy-saving state switches from the energy-saving state to the working state, and the user that the macro base station provides the service belongs to the user covered by the small-cell base station, and the user belongs to the small-cell base station. The user covered by the small cell base station provides services. Optionally, the little one The regional base station sends a status message to the surrounding small cell base station, so that the surrounding small cell base station knows the working state of the small cell base station, and further can send a functional request message to the small cell base station.

The base station energy-saving method provided by the embodiment of the present invention, the macro base station receives the energy-saving handover request sent by the at least one small-cell base station, and each energy-saving handover request carries the first parameter information, where the first parameter information includes at least: the small-cell base station The total number of occupied resource blocks, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the downlink transmit power required by the macro base station to provide services for users covered by the small cell base station; The total number of resource blocks occupied by the small cell base station of the small cell base station, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the macro base station required to provide services for users covered by the small cell base station And determining, by the downlink transmit power and the energy-saving handover condition, whether the at least one small cell base station satisfies a power-saving handover condition; and when the at least one small-cell base station satisfies the energy-saving handover condition, sending an energy-saving handover command to the at least one small-cell base station Passing the at least one small cell base station The user of the cover switches to the macro base station, and when the user handover ends, the at least one small cell base station enters a power saving state. According to the technical solution provided by the present invention, the macro base station determines, according to the first parameter information of the at least one small cell and the energy saving switching condition, whether the at least one small cell base station can switch to the energy saving state, fully considering the load condition of the macro base station, to ensure that After the user of the at least one small cell base station is handed over to the macro base station, the macro base station can provide services for the user covered by the at least one small cell, which does not affect the normal service of the small cell base station user or the normal service of the macro base station user. The overall energy consumption of the macro base station and the small cell base station is reduced, and the user communication experience and the throughput of the macro base station and the small cell base station are improved. Further, the macro base station determines whether the small cell base station in the power saving state is switched from the energy saving state to the working state according to the second parameter information and the working state switching condition, thereby improving the timeliness and flexibility of the small cell state switching. FIG. 3 is a schematic structural diagram of a base station energy-saving device according to an embodiment of the present invention. Referring to FIG. 3, the device includes:

The first receiving module 301 is configured to receive the energy-saving switching request sent by the at least one small-cell base station, where the energy-saving switching request carries the first parameter information, where the first parameter information includes: at least: the total number of resource blocks occupied by the small-cell base station, The downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the downlink transmit power required by the macro base station to provide services for users covered by the small cell base station;

The first determining module 302 is configured to occupy, according to the small cell base station of each small cell base station The total number of resource blocks, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the downlink transmit power and energy-saving handover conditions required for the macro base station to provide services for users covered by the small cell base station, Determining whether at least one small cell base station satisfies a power saving switching condition;

The first sending module 303 is configured to: when the at least one small cell base station meets the energy saving switching condition, send a power saving handover command to the at least one small cell base station, so that the user covered by the at least one small cell base station switches to The macro base station, when the user handover ends, the at least one small cell base station enters a power saving state.

The device also includes:

The second receiving module 304 is configured to receive the second parameter information that is sent by the small cell base station in the power saving state, where the second parameter information includes: at least: the location information of the small cell base station in the energy saving state, and the idle resource block. The total number of downlink transmit powers required by the small cell base station in the energy-saving state to provide services for the user covered by the small cell base station in the energy-saving state;

The second judging module 305 is configured to: according to the location information of the small cell base station in the energy saving state, the total number of idle resource blocks, and the downlink transmission required by the small cell base station in the energy saving state to provide services for the user covered by the small cell base station a power and working state switching condition, determining whether the small cell base station in the energy saving state meets a working state switching condition;

The second sending module 306 is configured to: if the small cell base station in the energy-saving state meets the working state switching condition, send a working state switching command to the small cell base station in the energy-saving state, so that the small-cell base station in the energy-saving state Switch from energy saving state to working state.

The device also includes:

The quantity control module 307 is configured to: when the at least one small cell base station does not meet the power saving handover condition, reduce the number of the at least one small cell base station, until the reduced number of small cell base stations meet the energy saving switching condition, And transmitting, by the reduced number of small cell base stations, a power saving handover command, so that the user covered by the reduced number of small cell base stations switches to the macro base station, and when the user handover ends, the reduced number of small cell base stations Enter the energy saving state.

The energy-saving handover condition is that the total number of idle resource blocks of the macro base station is greater than the total number of occupied resource blocks of the at least one small cell base station, and the macro base station provides downlink for the user covered by the at least one small cell base station. The transmit power is less than the downlink transmit power of the at least one small cell base station.

The device also includes:

a third determining module 308, configured to: according to the location information of the macro base station serving user, and the And determining, by the location information of the small cell base station in the energy saving state, whether the number of users covered by the small cell base station in the energy saving state is greater than a preset value;

Correspondingly, the second determining module 305 is configured to: when the number of users covered by the small cell base station in the energy-saving state is greater than a preset value, according to the location information of the small cell base station in the energy-saving state, and the total number of idle resource blocks. And determining, by the small cell base station in the energy-saving state, the downlink transmit power and the working state switching condition required for the user of the small cell base station to provide a service, and determining whether the small cell base station in the energy-saving state satisfies the working state switching condition.

The working state switching condition is that the total number of resource blocks used by the macro base station to provide services for users covered by the small cell base station in the power saving state is smaller than the total number of idle resource blocks of the small cell base station in the energy saving state, and the The downlink transmit power used by the macro base station to provide services for users covered by the small cell base station in the energy-saving state is greater than the downlink transmit power used when the small-cell base station in the energy-saving state provides services for the covered user.

The macro base station and the small cell base station transmit and receive signals through the Xm interface.

The base station energy-saving device provided by the embodiment of the present invention, the macro-base station receives the energy-saving handover request sent by the at least one small-cell base station, and each energy-saving handover request carries the first parameter information, where the first parameter information includes: the small-cell base station The total number of occupied resource blocks, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the downlink transmit power required by the macro base station to provide services for users covered by the small cell base station; The total number of resource blocks occupied by the small cell base station of the small cell base station, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the macro base station required to provide services for users covered by the small cell base station And determining, by the downlink transmit power and the energy-saving handover condition, whether the at least one small cell base station satisfies a power-saving handover condition; and when the at least one small-cell base station satisfies the energy-saving handover condition, sending an energy-saving handover command to the at least one small-cell base station And causing the at least one small cell base station to cover The user switches to the macro base station, and when the user handover ends, the at least one small cell base station enters a power saving state. According to the technical solution provided by the present invention, the macro base station determines, according to the first parameter information of the at least one small cell and the energy saving switching condition, whether the at least one small cell base station can switch to the energy saving state, fully considering the load condition of the macro base station, to ensure that After the user of the at least one small cell base station is handed over to the macro base station, the macro base station can provide services for the user covered by the at least one small cell, which does not affect the normal service of the small cell base station user or the normal service of the macro base station user. The overall energy consumption of the macro base station and the small cell base station is reduced, and the user communication experience and the throughput of the macro base station and the small cell base station are improved. Further, the macro base station determines the small energy-saving state by switching the condition according to the second parameter information and the working state. Whether the area base station switches from the energy saving state to the working state improves the timeliness and flexibility of the small cell state switching. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention. Referring to FIG. 4, the base station includes: a receiver 401, a processor 402, and a transmitter 403.

The receiver 401 is configured to receive the energy-saving handover request sent by the at least one small-cell base station, where the energy-saving handover request carries the first parameter information, where the first parameter information includes: at least: the total number of resource blocks occupied by the small-cell base station, The downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the downlink transmit power required by the macro base station to provide services for users covered by the small cell base station;

The processor 402 is configured to: according to the total number of resource blocks occupied by the small cell base station of each small cell base station, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the macro base station Determining, by the user covered by the small cell base station, the downlink transmit power and the energy-saving handover condition required by the service, and determining whether the at least one small cell base station satisfies the energy-saving handover condition;

The transmitter 403 is configured to: when the at least one small cell base station meets the energy saving handover condition, send a power saving handover command to the at least one small cell base station, so that the user covered by the at least one small cell base station switches to The macro base station, when the user handover ends, the at least one small cell base station enters a power saving state.

The receiver 401 is further configured to receive the second parameter information that is sent by the small cell base station in the power saving state, where the second parameter information includes: at least: the location information of the small cell base station in the energy saving state, and the idle resource. The total number of blocks, the small cell base station in the energy-saving state, the downlink transmit power required to provide services for the user covered by the small cell base station in the energy-saving state;

The processor 402 is further configured to: according to the location information of the small cell base station in the power saving state, the total number of idle resource blocks, and the downlink required by the small cell base station in the energy saving state to provide services for the user covered by the small cell base station Transmitting power and working state switching conditions, determining whether the small cell base station in the energy saving state satisfies a working state switching condition;

The transmitter 403 is further configured to: if the small cell base station in the energy-saving state meets the working state switching condition, send a working state switching command to the small cell base station in the energy-saving state, so that the small cell in the energy-saving state The base station switches from the energy saving state to the working state.

The processor 402 is further configured to: when the at least one small cell base station does not meet the power saving handover condition, reduce the number of the at least one small cell base station until the reduced number of small cell base stations And satisfying the energy-saving switching condition, sending, to the reduced number of small cell base stations, a power-saving handover command, so that the user covered by the reduced number of small-cell base stations switches to the macro base station, when the user handover ends, The reduced number of small cell base stations enter a power saving state.

The processor 402 is further configured to determine, according to the location information of the macro base station serving user and the location information of the small cell base station in the power saving state, whether the number of users covered by the small cell base station in the energy saving state is greater than a pre Set value

Correspondingly, the processor 402 is further configured to: when the number of users covered by the small cell base station in the energy-saving state is greater than a preset value, according to the location information of the small cell base station in the energy-saving state, the total number of idle resource blocks, The small cell base station in the energy-saving state provides the downlink transmit power and the working state switching condition required for the user covered by the small cell base station to determine whether the small cell base station in the energy-saving state satisfies the working state switching condition.

The macro base station and the small cell base station transmit and receive signals through the Xm interface. The base station provided by the embodiment of the present invention receives the energy-saving handover request sent by the at least one small-cell base station by using the macro-base station, and each energy-saving handover request carries the first parameter information, where the first parameter information includes: at least: the small-cell base station occupies resources The total number of blocks, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the downlink transmit power required by the macro base station to provide services for users covered by the small cell base station; The total number of resource blocks occupied by the small cell base station of the base station, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the downlink transmission required by the macro base station to provide services for users covered by the small cell base station And determining, by the power and the energy-saving switching condition, whether the at least one small cell base station satisfies the energy-saving switching condition; when the at least one small cell base station satisfies the energy-saving switching condition, sending an energy-saving switching command to the at least one small-cell base station, so that User switching covered by the at least one small cell base station The macro base station, when a When the handover ends, the at least one small cell base station enters a power saving state. According to the technical solution provided by the present invention, the macro base station determines, according to the first parameter information of the at least one small cell and the energy saving switching condition, whether the at least one small cell base station can switch to the energy saving state, fully considering the load condition of the macro base station, to ensure that After the user of the at least one small cell base station is handed over to the macro base station, the macro base station can provide normal service for the user covered by the at least one small cell, which does not affect the normal service of the small cell base station user or the normal service of the macro base station user. The overall energy consumption of the macro base station and the small cell base station is reduced, and the user communication experience and the throughput of the macro base station and the small cell base station are improved. Further, the macro base station determines whether the small cell base station in the energy-saving state is switched from the energy-saving state to the working state according to the second parameter information and the working state switching condition, thereby improving the timeliness and flexibility of the small-cell state switching.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

Claim

A method for powering a base station, the method comprising:

The macro eNB receives the energy-saving handover request sent by the at least one small-cell base station, and each of the energy-saving handover requests carries the first parameter information, where the first parameter information includes at least: the total number of resource blocks occupied by the small-cell base station, and the small-cell base station The downlink transmit power, the total number of users covered by the small cell base station, and the downlink transmit power required by the macro base station to provide services for users covered by the small cell base station;

The method according to claim 1, wherein after the at least one small cell base station satisfies the power saving handover condition, after sending the power saving handover command to the at least one small cell base station, the method further includes :

3. The method according to claim 1, wherein: according to the small cell base station The total number of resource blocks occupied by the small cell base station, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the downlink transmit power and energy saving required by the macro base station service to provide services for users covered by the small cell base station After the handover condition is determined, whether the small cell base station satisfies the energy-saving handover condition, the method further includes:

When the at least one small cell base station does not satisfy the power saving handover condition, reducing the number of the at least one small cell base station until the reduced number of small cell base stations satisfy the energy saving switching condition, to the reduced number of The small cell base station sends a power saving handover command, so that the user covered by the reduced number of small cell base stations switches to the macro base station, and when the user handover ends, the reduced number of small cell base stations enter a power saving state.

The method according to claim 2, wherein the power-saving handover condition is that the total number of idle resource blocks of the macro base station is greater than the total number of occupied resource blocks of the at least one small-cell base station, and the macro base station is The downlink transmit power required by the user provided by the at least one small cell base station to provide the service is smaller than the downlink transmit power of the at least one small cell base station.

The method according to claim 2, wherein the second parameter information sent by the small cell base station in the power saving state is received, and the second parameter information includes at least: the small cell base station in the energy saving state. The method further includes: after the location information, the total number of the idle resource blocks, and the downlink transmit power required by the small cell base station in the power-saving state to provide the service to the user in the energy-saving small cell base station, the method further includes:

Determining, according to the location information of the macro base station serving user and the location information of the small cell base station in the power saving state, whether the number of users covered by the small cell base station in the energy saving state is greater than a preset value; The location information of the small cell base station in the energy-saving state, the total number of idle resource blocks, and the downlink transmit power and the working state switching condition required for the small cell base station in the energy-saving state to provide services for the user covered by the small cell base station, and determine that the Whether the small cell base station in the energy-saving state satisfies the working state switching condition, including:

The method according to claim 2, wherein the working state switching condition is that the total number of resource blocks used by the macro base station to provide services for users covered by the small cell base station in the power saving state is smaller than the The total number of idle resource blocks of the small cell base station in the power saving state, and the downlink base station used by the macro base station to provide services for the user covered by the small cell base station in the power saving state is larger than the small cell base station in the energy saving state. The downlink transmit power used by the user to provide the service.

The method according to any one of claims 1-6, wherein the macro base station and the small cell base station transmit and receive signals through the Xm interface.

8. A base station energy saving device, the device comprising:

The first receiving module is configured to receive the energy saving switching request sent by the at least one small cell base station, where each energy saving switching request carries the first parameter information, where the first parameter information at least includes: the total number of resource blocks occupied by the small cell base station, The downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the downlink transmit power required by the macro base station to provide services for users covered by the small cell base station;

9. The device according to claim 8, wherein the device further comprises:

The second receiving module is configured to receive the second parameter information that is sent by the small cell base station in the power saving state, where the second parameter information includes: at least: the location information of the small cell base station in the energy saving state, and the total number of idle resource blocks. And the small cell base station in the energy-saving state provides downlink transmission power required for the user covered by the small-cell base station in the energy-saving state;

a second determining module, configured to: according to the location information of the small cell base station in the energy saving state, empty The total number of the idle resource blocks and the small cell base station in the energy-saving state provide the downlink transmit power and the working state switching condition required for the user covered by the small cell base station, and determine whether the small cell base station in the energy-saving state satisfies the working state handover. condition;

The device according to claim 8, wherein the device further comprises: a quantity control module, configured to reduce the at least one small when the at least one small cell base station does not satisfy the energy saving switching condition The number of the cell base stations, until the reduced number of small cell base stations satisfy the energy saving switching condition, and sends a power saving handover command to the reduced number of small cell base stations, so that the user covered by the reduced number of small cell base stations switches to The macro base station, when the user handover ends, the reduced number of small cell base stations enter a power saving state.

The device according to claim 9, wherein the power-saving switching condition is that the total number of idle resource blocks of the macro base station is greater than the total number of occupied resource blocks of the at least one small cell base station, and the macro base station is The downlink transmit power required by the user provided by the at least one small cell base station to provide the service is smaller than the downlink transmit power of the at least one small cell base station.

The device according to claim 9, wherein the device further comprises: a third determining module, configured to: according to the location information of the macro base station serving user and the location of the small cell base station in the energy saving state Information, determining whether the number of users covered by the small cell base station in the energy-saving state is greater than a preset value;

The device according to claim 9, wherein the working state switching condition is a resource used when the macro base station provides a service for a user covered by a small cell base station in a power saving state. The total number of blocks is smaller than the total number of idle resource blocks of the small cell base station in the power saving state, and the downlink transmitting power used by the macro base station to provide services for users covered by the small cell base station in the power saving state is greater than the energy saving state. The downlink transmit power used by the small cell base station to provide services to the covered users.

The apparatus according to any one of claims 8 to 13, wherein the macro base station and the small cell base station transmit and receive signals through the Xm interface.

A base station, the base station includes: a receiver, a transmitter, and a processor, where the receiver is configured to receive an energy-saving handover request sent by at least one small-cell base station, where each energy-saving handover request carries a a parameter information, the first parameter information at least: the total number of resource blocks occupied by the small cell base station, the downlink transmit power of the small cell base station, the total number of users covered by the small cell base station, and the macro base station being the small cell The downlink transmit power required by the user covered by the base station is provided by the base station; the processor is configured to: according to the total number of resource blocks occupied by the small cell base station of each small cell base station, and the downlink transmit power of the small cell base station, Determining whether the at least one small cell base station satisfies the energy saving switching condition, the total number of users covered by the small cell base station, and the downlink transmitting power and the energy saving switching condition required by the macro base station to provide services for the user covered by the small cell base station;

The transmitter is configured to: when the at least one small cell base station satisfies the power saving handover condition, send a power saving handover command to the at least one small cell base station, so that the user covered by the at least one small cell base station switches to the The macro base station, when the user handover ends, the at least one small cell base station enters a power saving state.