WO2012155586A1

WO2012155586A1 - Method and system for selecting energy-saving cell

Info

Publication number: WO2012155586A1
Application number: PCT/CN2012/071626
Authority: WO
Inventors: 韩立锋; 闫剑龙; 郑小盈; 金圣峣
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-07-07
Filing date: 2012-02-24
Publication date: 2012-11-22
Also published as: CN102869041A

Abstract

Disclosed are a method and a system for selecting an energy-saving cell. The method comprises: an energy-saving base station, according to measuring and reporting information of a UE in an energy-saving cell of the energy-saving base station, obtaining an RF mode of the energy-saving cell and transferring the RF mode to a control base station; and the control base station, according to reporting and measuring information of a UE in a cell of the control base station and an RF mode of each energy-saving cell, selecting to switch on the energy-saving cell. In the method of the present invention, an RF mode of an energy-saving cell is extracted, and the RF mode of the energy-saving cell is transferred to a control base station, so as to assist the control base station in judging payload in a coverage of the energy-saving cell according to a measuring report of a UE, and optimize efficiency of selecting and switching on an energy-saving cell.

Description

Method and system for selecting energy-saving cell

The present invention relates to Long Term Evolution (LTE) mobile communication technologies, and more particularly to a method and system for selecting an energy saving cell. Background technique

Most of the existing energy-saving solutions are aimed at reducing energy consumption by turning off energy-saving cells. The basic process roughly includes:

The closing process of the energy-saving cell: The energy-saving cell decides to enter the energy-saving state according to the load information; the decision to turn off the energy-saving cell to enter the energy-saving state can also be issued by the OAM (Opera and Operate Management Center); when the energy-saving cell is ready to close In the energy-saving state, the user equipment (UE, User equipment) in the coverage area can be switched to the neighboring cell, and the reason for the handover is due to the energy-saving operation; the energy-saving cell notifies the neighboring cell of the shutdown operation.

When the load of the cell providing the basic coverage (that is, the cell under the control of the base station) is increased, the cell activation procedure can be used to wake up the energy-saving cell to enter the working state. The process of enabling the energy-saving cell includes: The decision to wake up the energy-saving cell can be sent by the OAM center; the energy-saving cell usually responds to the wake-up operation and enters the working state; the energy-saving cell notifies the neighbor cell that it has exited the energy-saving state and enters the working state.

When the load of the cell under the control of the base station is increased, a suitable energy-saving cell should be selected for wake-up. A suitable energy-saving cell means that when the energy-saving cell is awakened, it can bear the appropriate load for the cell under the jurisdiction of the control base station. The existing energy-saving scheme also points out the choice of optimizing the energy-saving cell through the following ways: without any optimization, OAM center pre-set strategy, interference power and thermal noise power ratio (IoT, Interference over Thermal) measurement, UE measurement, location information .

Wherein, in the method of not performing any optimization, the cell under the jurisdiction of the control base station is only based on the local Load information, selecting one or more activations from the alternative energy-saving cells. The algorithm has low overhead, but the energy-saving efficiency may not be high. In the OAM strategy, the system records the periodicity of the low load, and then the OAM center presets the turn-on and turn-off time of the energy-saving cell. The method has low complexity, and the energy saving effect is good when the system load changes are relatively regular. However, this method is difficult to achieve good energy-saving effects for complex and dynamic situations with poor accuracy.

In the IoT measurement method, when the load of the cell under the control of the base station is increased, the monitoring function of the energy-saving area is turned on to measure ΙοΤ, thereby determining whether the energy-saving cell needs to be turned on. The method has high precision and good energy saving effect, but due to the function of monitoring the energy-saving cell, the system has a large overhead and consumes a certain amount of energy.

In the UE measurement method, the energy-saving cell turns on the pilot signal for a period of time, so that the UE can determine whether it is located within the coverage of the energy-saving cell according to the signal strength of the energy-saving cell measured by itself. This method is also highly accurate, but it needs to turn on some functions of the energy-saving cell, and the system is expensive.

In the method of using location information, the location information and coverage radius of the energy-saving cell are known in advance. It locates the location information of the UE and then compares it with the location information of the energy-saving cell to determine the amount of load within the coverage of the energy-saving cell. The method has high precision and does not need to open the energy-saving area, but it needs to know the location information of the energy-saving cell, so it is not suitable for the energy-saving cell scene that can be flexibly deployed and the location information is uncertain.

It can be seen that the existing energy-saving cell selection schemes have corresponding problems, and the selection of energy-saving cells cannot be achieved well. Summary of the invention

In view of this, the main object of the present invention is to provide a method and system for selecting an energy-saving cell, which can optimize the efficiency of energy-saving cell selection and opening.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A method for selecting an energy-saving cell, including, The energy-saving base station acquires the radio frequency RF mode of the energy-saving cell according to the measurement report information of the user equipment UE in the energy-saving cell to which it belongs, and transmits the radio frequency RF mode to the control base station;

The control base station selects to enable the energy-saving cell according to the measurement information reported by the UE in the jurisdiction and the RF mode of each energy-saving cell.

The method further includes: the energy-saving cell to which the energy-saving base station belongs is autonomously shut down and enters a power-saving state. The energy-saving base station obtains the RF mode of the energy-saving cell according to the measurement report information of the UE in the energy-saving cell to which the energy-saving base station belongs:

The energy-saving base station performs measurement configuration on the UE of the energy-saving cell to which it belongs;

The UE performs measurement and reporting of the wireless signal according to the measurement configuration;

The energy-saving base station counts the measurement report of the UE in the energy-saving cell to which it belongs, and extracts the RF mode of the energy-saving cell.

The measurement configuration includes: periodic reporting, or event triggering reporting.

The RF mode of the energy-saving cell is an upper limit and a lower limit of a signal quality of a cell measured by a UE in the energy-saving cell.

The energy-saving base station transmitting the obtained RF mode of the energy-saving cell to the control base station includes: the energy-saving base station transmitting, by using the X2 interface or the S1 interface, the message 1 including the RF mode information of the energy-saving cell of the energy-saving cell;

The message 1 includes an identifier of the energy-saving cell and an RF mode of the energy-saving cell, where the RF mode includes an identifier of a neighboring cell of the energy-saving cell and an upper limit and a lower limit of the measured signal quality of the neighboring cell.

The control base station selects to enable the energy-saving cell according to the measurement information reported by the UE in the jurisdiction and the RF mode of each energy-saving cell, including:

The control base station configures the UE measurement report of the cell under the jurisdiction, and resets the UE number counter in the coverage range of all the energy-saving cells to zero;

The control base station compares the measured value reported by the UE with the RF mode of the energy-saving cell, and According to the value of the number of UEs in the coverage of each energy-saving cell, the most suitable energy-saving cell is selected for activation.

The comparison includes:

If the measured value of the UE matches the RF mode of the energy-saving cell, and the UE is not counted in the coverage of the energy-saving cell, the counter number of the UE in the coverage of the energy-saving cell is increased by one;

If the measured value of the UE matches the RF mode of the energy-saving cell, and the UE has been counted in the coverage of the energy-saving cell, the UE number counter in the coverage of the energy-saving cell is unchanged;

If the measured value of the UE does not match the RF mode of the energy-saving cell, and the UE is not counted in the coverage of the energy-saving cell, the UE number counter in the coverage of the energy-saving cell does not change;

If the measured value of the UE does not match the RF mode of the energy-saving cell, and the UE has been counted in the coverage of the energy-saving cell, the UE number counter in the coverage of the energy-saving cell is decremented by one.

The control base station configuration controls the UE measurement reporting of the cell under the control of the base station, including periodic reporting, or event trigger reporting.

A system for selecting an energy-saving cell includes at least a power-saving base station and a control base station, where the energy-saving base station is configured to acquire an RF mode of the energy-saving cell according to the measurement report information of the UE in the energy-saving cell to which it belongs, and transmit the RF mode to the control base station;

The control base station is configured to select to enable the energy-saving cell according to the RF information sent by the UE controlled by the base station and the RF mode of each energy-saving cell.

The energy-saving base station is further configured to automatically shut down the energy-saving cell and enter a power-saving state.

The energy-saving base station and the control base station are evolved node eNBs in the LTE system;

Or, for the radio network controller RNC; Or, it is the base station controller BSC.

As can be seen from the technical solution provided by the present invention, the energy-saving base station obtains the RF mode of the energy-saving cell according to the measurement report information of the UE in the energy-saving cell to which it belongs, and transmits the RF mode to the control base station. The control base station reports the measurement information according to the UE under the jurisdiction. With the RF mode of each energy-saving cell, the energy-saving cell is selected to be turned on. The solution of the present invention extracts the RF mode of the energy-saving cell through the energy-saving cell, and transmits the RF mode of the energy-saving cell to the control base station through the X2 or S1 interface, which helps the control base station to determine the load in the coverage of the energy-saving cell according to the measurement report of the UE. Optimized the efficiency of energy-saving cell selection and opening. DRAWINGS

1 is a schematic flow chart of a method for selecting an energy-saving cell according to the present invention;

2 is a schematic diagram of the principle of RF pattern matching according to the present invention;

3 is a schematic flowchart of a first embodiment of selecting an energy-saving cell according to the present invention;

4 is a schematic flowchart of a second embodiment of selecting an energy-saving cell according to the present invention;

FIG. 5 is a schematic flowchart diagram of a third embodiment of selecting an energy-saving cell according to the present invention; FIG.

FIG. 6 is a schematic flowchart diagram of a fourth embodiment of selecting an energy-saving cell according to the present invention. detailed description

FIG. 1 is a schematic flowchart of a method for selecting an energy-saving cell according to the present invention. As shown in FIG. 1, the method includes the following steps:

Step 100: The energy-saving base station acquires a radio frequency (RF) mode of the energy-saving cell according to the measurement report information of the UE in the energy-saving cell to which the energy-saving cell belongs, and transmits the radio frequency (RF) mode to the control base station.

The step of the present invention includes: the energy-saving base station collects the measurement report of the UE in the energy-saving cell, and extracts the RF mode of the energy-saving cell A. The energy-saving base station transmits the RF mode of the energy-saving cell to the message 1 through the X2 interface or the S1 interface. Control the base station. As shown in Table 1, message 1 carrying cell RF mode information contains a list of RF modes for each cell. RF signal per cell The item may include a cell identification (ID) and a list of RF modes, wherein each RF mode may include one or more of the following: a measurement item, a trusted flag, a lower limit of a normal range of measured values, and a normal measured value The upper limit of the range.

Table 1

The step may further include: after a period of time, the energy-saving cell autonomously shuts down and enters the energy-saving state, and the specific implementation belongs to the prior art, and does not belong to the protection scope of the present invention, and is not described in detail herein.

Step 101: The control base station selects to enable the energy-saving cell according to the measurement information reported by the UE controlled by the base station and the RF mode of each energy-saving cell.

In this step, when the cell under the control of the base station needs to open the energy-saving cell, the control base station configures the UE to measure the triggering condition of the UE in the cell under the jurisdiction of the base station, and the measurement result reported by the UE and the RF of all the energy-saving cells obtained in step 100. The mode is matched to calculate the load in the coverage of each energy-saving cell; the cell under the jurisdiction of the base station is controlled according to the calculated load, the appropriate energy-saving cell is selected, and a cell activation request is sent to the selected energy-saving cell (Cell Activation Request ) to enable energy-efficient cells.

In this step, as shown in FIG. 2, the principle of the RF pattern matching of the present invention generally includes: collecting wireless signal data in the area X, processing the collected data by the pattern generator, and generating an RF mode, that is, geography. The area corresponds to the RF mode, and this correspondence can be saved in the database. In this way, after the UE reports the wireless signal, according to the correspondence between the geographical area and the RF mode, the geographical location area where the UE is located can be obtained.

The method of the present invention extracts the RF mode of the energy-saving cell through the energy-saving cell, and transmits the RF mode of the energy-saving cell to the control base station through the X2 or S1 interface, which helps the control base station to determine the load amount in the coverage of the energy-saving cell according to the measurement report of the UE. Optimized the efficiency of energy-saving cell selection and opening.

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

The first embodiment, as shown in FIG. 3, includes the steps of acquiring the RF mode and the energy-saving cell opening in the embodiment, and the specific process is as follows:

Steps 300 to 302: The energy-saving base station acquires the RF mode of the energy-saving cell according to the measurement report of the UE in the energy-saving cell to which the energy-saving base station belongs, and transmits the RF mode to the control base station. specifically:

The energy-saving base station performs measurement configuration on the UE of the energy-saving cell A. In this embodiment, it is assumed that the measurement quantity includes the signal quality of the local cell and the surrounding cell, and the reporting trigger condition is configured to be periodically reported. For example, the measurement period may be configured to be 100s or the like. The UE performs measurement of the wireless signal according to the measurement configuration and periodically reports it;

The UE periodically reports the signal quality of the measured cell. In this embodiment, it is assumed that the signal quality of the cell 1, the cell 2, and the cell 3 is included. The energy-saving base station counts the measurement report of the UE in the energy-saving cell A, and extracts the RF mode of the energy-saving cell A, for example, the upper and lower limits of the signal quality of the cell 1 measured by the UE in the cell A, and the upper limit of the signal quality of the cell 2 Lower limit, the upper and lower limits of the signal quality of cell 3. The energy-saving base station sends a message 1 including the cell RF mode information of the energy-saving cell A to the control base station through the X2 or S1 interface. The structure of the message 1 is as shown in Table 1. In the example, the message 1 includes the identifier of the cell A, such as the evolved base station global identification code (ECGI, Evolved Cell Global Identity) and the RF mode of the cell A, where the RF mode may include the identifier of the neighboring cell of the cell A and the detected neighboring cell. The upper and lower limits of the signal quality of the zone. Among them, the number of measurement cells is not limited.

Step 303: When the energy-saving cell A meets the condition of entering the energy-saving state, the energy-saving cell A automatically shuts down and enters a power-saving state. It should be noted that the execution of this step is not necessary.

Step 304 to step 307: The control base station selects to enable the energy-saving cell according to the reported measurement information of the UE in the managed cell and the obtained RF mode of each energy-saving cell. specifically:

First, when the energy of the cell under the control of the base station is increased, and the power-saving cell needs to be turned on, the control base station configures the UE measurement reporting triggering condition of the cell under the control of the base station to be periodically reported. In this embodiment, the measurement quantity includes the current cell. And the signal quality of the surrounding cells. The control base station resets the counter number of UEs in the coverage of all energy-saving cells to zero;

Then, the control base station compares the measured value reported by the UE with the RF mode of the energy-saving cell:

(a) if the measured value of the UE matches the RF mode of the energy-saving cell A, and the UE is not counted in the coverage of the energy-saving cell A, the number of UEs in the coverage of the energy-saving cell A increases by one;

(b) if the measured value of the UE matches the RF mode of the energy-saving cell A, and the UE has been counted in the coverage of the energy-saving cell A, the number of UEs in the coverage of the energy-saving cell A does not change;

(c) if the measured value of the UE does not match the RF mode of the energy-saving cell A, and the UE is not counted in the coverage of the energy-saving cell A, the counter number of the UE in the coverage area of the energy-saving cell A does not change;

(d) if the measured value of the UE does not match the RF mode of the energy-saving cell A, and the UE has been counted within the coverage of the energy-saving cell A, the counter number of UEs within the coverage of the energy-saving cell A is decremented by one; In this way, the control base station can select the most suitable energy-saving cell for activation according to the number of UEs in the coverage of each energy-saving cell. For example, the cell A with the largest number of UEs in the cell coverage is selected to be activated, and the control base station sends a Cell Activation Request to the selected energy-saving cell A to activate the energy-saving cell.

In the second embodiment, as shown in FIG. 4, in this embodiment, two processes of acquiring an RF mode and an energy-saving cell are opened, and the specific process is as follows:

Step 400 to step 402: The energy-saving base station acquires the RF mode of the energy-saving cell according to the measurement report information of the UE in the energy-saving cell to which it belongs, and transmits the RF mode to the control base station. specifically:

The energy-saving base station performs measurement configuration on the UE of the energy-saving cell 所属, and in this embodiment, the measurement quantity includes the signal quality of the local cell and the surrounding cell, and the reporting trigger condition is configured to be periodically reported. For example, the measurement period can be configured to be 100 s or the like. The UE performs measurement of the wireless signal according to the measurement configuration and periodically reports it;

The UE periodically reports the signal quality of the measured cell. In this embodiment, it is assumed that the signal quality of the cell 1, the cell 2, and the cell 3 is included. The energy-saving base station counts the measurement report of the UE in the energy-saving cell A, and extracts the RF mode of the energy-saving cell A, for example, the upper and lower limits of the signal quality of the cell 1 measured by the UE in the cell A, and the upper limit of the signal quality of the cell 2 Lower limit, the upper and lower limits of the signal quality of cell 3. The energy-saving base station sends a message including the RF mode information of the cell of the energy-saving cell A to the control base station through the X2 or S1 interface. The structure of the message 1 is as shown in Table 1. In this embodiment, the message 1 includes the ECGI of the cell A and the RF mode of the cell A, where the RF mode may include the identifier of the neighboring cell of the cell A and the measured upper and lower limits of the signal quality of the neighboring cell. Among them, the number of measurement cells is not limited.

Step 403: When the energy-saving cell A meets the condition of entering the energy-saving state, the energy-saving cell A automatically shuts down and enters a power-saving state. It should be noted that the execution of this step is not necessary.

Step 404 to step 407: The control base station selects to enable the energy-saving cell according to the measurement information reported by the UE and the RF mode of each energy-saving cell. specifically: First, when the energy of the cell under the control of the base station is increased, the control base station configures the triggering condition of the UE measurement and reporting of the cell under the control of the base station to be triggered by the event triggering. In this embodiment, the measurement quantity includes the current cell. And the signal quality of the surrounding cell, in this embodiment, it is assumed that the signal reporting the surrounding cell of the measured event is greater than the set threshold. The control base station resets the number of UEs in the coverage of all energy-saving cells to zero.

Then, the control base station compares the measured value reported by the UE with the RF mode of the energy-saving cell: (a) if the measured value of the UE matches the RF mode of the energy-saving cell A, and the UE is not counted in the coverage of the energy-saving cell A, The number of UEs in the coverage area of the energy-saving cell A is increased by one;

(b) If the measured value of the UE matches the RF mode of the energy-saving cell A, and the UE has been counted in the coverage of the energy-saving cell A, the number of UEs in the coverage area of the energy-saving cell A does not change;

(d) If the measured value of the UE does not match the RF mode of the energy-efficient cell A, and the UE has been counted in the coverage of the energy-saving cell A, the counter number of the UE in the coverage area of the energy-saving cell A is decremented by one;

In this way, the control base station selects the most suitable energy-saving cell for activation according to the number of UEs in the coverage of each energy-saving cell. For example, the cell A with the largest number of UEs in the cell coverage is selected to be activated, and the control base station sends a Cell Activation Request to the selected energy-saving cell A to activate the energy-saving cell.

The third embodiment, as shown in FIG. 5, includes the steps of acquiring the RF mode and the energy-saving cell opening in the embodiment, and the specific process is as follows:

Step 500 to step 502: The energy-saving base station sends a report according to the UE in the energy-saving cell to which it belongs. The RF mode of the energy-saving cell is obtained and transmitted to the control base station. specifically:

First, in this embodiment, it is assumed that the energy-saving base station configures the UE measurement reporting triggering condition of the energy-saving cell A to be event-triggered, and the measurement quantity includes the signal quality of the local cell and the surrounding cell, and the reporting event is that the measured signal of the surrounding cell is greater than Set a threshold value;

The energy-saving base station counts the measurement report of the UE in the energy-saving cell A to which it belongs, and extracts the RF mode of the energy-saving cell A, for example, the upper and lower limits of the signal quality of the cell 1 measured by the UE in the cell A, and the upper limit of the signal quality of the cell 2 Lower limit, the upper and lower limits of the signal quality of cell 3. The energy-saving base station sends a message including the RF mode information of the cell of the energy-saving cell A to the control base station through the X2 interface or the S1 interface. The structure of the message 1 is as shown in Table 1. Message 1 contains the ECGI of cell A and the RF mode of cell A, where the RF mode may include d, the identity of the neighbor of zone A, and the upper and lower limits of the detected signal quality of the neighbor. Among them, the number of measurement cells is not limited.

Step 503: When the energy-saving cell A meets the condition of entering the energy-saving state, the energy-saving cell A automatically shuts down and enters a power-saving state. It should be noted that the execution of this step is not necessary.

Step 504 to step 507: The control base station selects to enable the energy-saving cell according to the RF information sent by the UE controlled by the UE under the control of the base station and the RF mode of each energy-saving cell. specifically:

(b) If the measured value of the UE matches the RF mode of the energy-saving cell A, and the UE has been counted within the coverage of the energy-saving cell A, the number of UEs within the coverage of the energy-saving cell A is counted The number of the device is unchanged;

(d) if the measured value of the UE does not match the RF mode of the energy-saving cell A, and the UE has been counted in the coverage of the energy-saving cell A, the counter number of the UE in the coverage area of the energy-saving cell A is decremented by one;

In this way, the control base station can select the most suitable energy-saving cell for activation according to the number of UEs in the coverage of each energy-saving cell. For example, the cell A with the largest number of UEs in the cell coverage area is selected to be activated, and the control base station sends a Cell Activation Request to the selected energy-saving cell A to activate the energy-saving cell.

The fourth embodiment, as shown in FIG. 6, includes the steps of acquiring the RF mode and the energy-saving cell opening, and the specific process is as follows:

Step 600 to step 602: The energy-saving base station acquires the RF mode of the energy-saving cell according to the measurement report information of the UE in the energy-saving cell to which the energy-saving base station belongs, and transmits the RF mode to the control base station. specifically:

First, in this embodiment, it is assumed that the energy-saving base station configures the UE measurement reporting triggering condition of the energy-saving cell 所属 to be event-triggered, and the measurement quantity includes the signal quality of the local cell and the surrounding cell, and the reporting event is that the measured signal of the surrounding cell is greater than Set a threshold value;

The energy-saving base station counts the measurement report of the UE in the energy-saving cell A to which it belongs, and extracts the RF mode of the energy-saving cell A, for example, the upper and lower limits of the signal quality of the cell 1 measured by the UE in the cell A, and the upper limit of the signal quality of the cell 2 Lower limit, the upper and lower limits of the signal quality of cell 3. The energy-saving base station sends a message 1 including the cell RF mode information of the energy-saving cell A to the control base station through the X2 interface or the S1 interface. The structure of the message 1 is as shown in Table 1. Message 1 contains the ECGI of cell A and the RF mode of cell A, where the RF mode may include d, the identity of the neighbor of zone A, and the measured upper and lower limits of the signal quality of the neighbor. Among them, the number of measurement cells is not limited. Step 603: When the energy-saving cell A meets the condition of entering the energy-saving state, the energy-saving cell A automatically shuts down and enters the energy-saving state. It should be noted that the execution of this step is not necessary.

Step 604 to step 607: The control base station selects to enable the energy-saving cell according to the RF information sent by the UE controlled by the UE under the control of the base station and the RF mode of each energy-saving cell. specifically:

First, when the energy of the cell under the control of the base station is increased, the control base station configures the triggering condition of the UE measurement and reporting of the cell under the control of the base station to be triggered by the event triggering. In this embodiment, the measurement quantity includes the current cell. And the signal quality of the surrounding cell, in this embodiment, it is assumed that the signal reporting the surrounding cell of the measured event is greater than the set threshold. The control base station resets the number of UEs in the coverage of all energy-saving cells to zero.

In this way, the control base station selects the most suitable energy-saving cell for activation according to the number of UEs in the coverage of each energy-saving cell. For example, the cell A with the largest number of UEs in the cell coverage is selected to be activated, and the control base station sends a Cell Activation Request to the selected energy-saving cell A. Live the energy-saving community A.

For the method of the present invention, a system for selecting an energy-saving cell, including at least an energy-saving base station, and a control base station, where

The energy-saving base station is configured to obtain the RF mode of the energy-saving cell according to the measurement report information of the UE in the energy-saving cell to which it belongs, and transmit the RF mode of the energy-saving cell to the control base station;

In the above embodiment, the energy-saving base station and the control base station are evolved node eNBs in the LTE system; the energy-saving base station and the control base station may also be a radio network controller (RNC), through the Iu port or the lur port. The message 1 can also be transmitted to the base station controller (BSC, Base Station Controller) through the A interface.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included. Within the scope of protection of the present invention. Industrial Applicability The present invention discloses a method and system for selecting an energy-saving cell, wherein the method includes: the energy-saving base station acquires the RF mode of the energy-saving cell according to the measurement report information of the UE in the energy-saving cell to which it belongs, and transmits the RF mode to the control base station; The energy-saving cell is selected to be started according to the measurement information reported by the UE under the jurisdiction and the RF mode of each energy-saving cell. The solution of the invention extracts its own RF mode by the energy-saving cell, and transmits the RF mode of the energy-saving cell to the control base station, which helps the control base station to determine the load within the coverage of the energy-saving cell according to the measurement report of the UE, and optimizes the energy-saving cell selection. And the efficiency of opening.

Claims

Claim

A method for selecting an energy-saving cell, characterized in that,

The energy-saving base station obtains the radio frequency RF mode of the energy-saving cell according to the measurement report information of the user equipment UE in the energy-saving cell to which it belongs, and transmits the radio frequency RF mode to the control base station;

The method according to claim 1, wherein the method further comprises: the energy-saving cell to which the energy-saving base station belongs is autonomously shut down and enters a power-saving state.

The method according to claim 1 or 2, wherein the energy-saving base station obtains the RF mode of the energy-saving cell according to the measurement report information of the UE in the energy-saving cell to which the energy-saving base station belongs:

The method according to claim 3, wherein the measuring configuration comprises: periodic reporting, or event triggering reporting.

The method according to claim 3, wherein the RF mode of the energy-saving cell is an upper limit and a lower limit of a signal quality of a cell measured by a UE in the energy-saving cell.

The method according to claim 1 or 2, wherein the transmitting, by the energy-saving base station, the obtained RF mode of the energy-saving cell to the control base station comprises:

The energy-saving base station sends a message 1 containing the RF mode information of the energy-saving cell to the control base station through the X2 interface or the S1 interface;

The message 1 includes an identifier of the energy-saving cell and an RF mode of the energy-saving cell, where the RF mode includes an identifier of a neighboring cell of the energy-saving cell and a measured signal quality of the neighboring cell Limit and lower limit.

The method according to claim 1 or 2, wherein the controlling the base station selects to enable the energy-saving cell according to the measurement information reported by the UE and the RF mode of each energy-saving cell.

The control base station compares the measured value reported by the UE with the RF mode of the energy-saving cell, and selects the most suitable energy-saving cell to activate according to the number of UEs in the coverage of each energy-saving cell.

The method according to claim 7, wherein the comparing comprises: if the measured value of the UE matches the RF mode of the energy-saving cell, and the UE is not counted within the coverage of the energy-saving cell And increasing the number of UEs in the coverage of the energy-saving cell by one;

The method according to claim 7 or 8, wherein the controlling the base station is configured to control the UE measurement report of the cell under the control of the base station, including periodic reporting, or event trigger reporting.

10. A system for selecting an energy-saving cell, characterized in that at least an energy-saving base station and a control are included Base station, where

The energy-saving base station is configured to acquire the RF mode of the energy-saving cell according to the measurement report information of the UE in the energy-saving cell to which it belongs, and transmit the RF mode to the control base station;

The system according to claim 10, wherein the energy-saving base station is further configured to automatically shut down the energy-saving cell and enter a power-saving state.

The system according to claim 10 or 11, wherein the energy-saving base station and the control base station are evolved node eNBs in the LTE system;

Or, for the radio network controller RNC;

Or, it is the base station controller BSC.