WO2015180029A1

WO2015180029A1 - Method and apparatus for improving spectrum utilization rate

Info

Publication number: WO2015180029A1
Application number: PCT/CN2014/078495
Authority: WO
Inventors: 徐战; 曾美艳
Original assignee: 华为技术有限公司
Priority date: 2014-05-27
Filing date: 2014-05-27
Publication date: 2015-12-03
Also published as: CN105340313B; CN105340313A

Abstract

A method and apparatus for improving the spectrum utilization rate. The method comprises: acquiring, by an eNodeB of a first cell, energy-saving state information about a second cell, wherein the first cell and the second cell are neighbour cells in different systems, and there is an overlapping portion between the frequency band of the first cell and the frequency band of the second band, which is an overlapping spectrum; determining, by the eNodeB of the first cell, whether the second cell is in an energy-saving state according to the energy-saving state information about the second cell; and when the second cell is in an energy-saving state, adopting, by the eNodeB of the first cell, the overlapping spectrum to perform data transmission. The method and apparatus improve the spectrum utilization rate and address the problem of UE power consumption and air interface resource waste.

Description

Method and device for improving spectrum utilization rate

Technical field

Embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and apparatus for improving spectrum utilization. Background technique

In the field of mobile communications, the available spectrum resources are limited, but the demand for communication services is increasing, so how to improve the utilization of spectrum resources is particularly important. The same frequency grouping is a way to effectively improve the utilization of spectrum resources. For example, some cells of the two communication systems use the same frequency band, and GERAN and Long Term Evolution (LTE) co-frequency networking are examples. GERAN (GSM EDGE Radio Access Network) is a global mobile communication system (Global System). For Mobile Communications (GSM) or the Enhanced Data Rate for GSM Evolution (EDGE), the abbreviation for Radio Access Network, which is the wireless access part of GSM or EDGE. In the same-frequency network planning, in order to reduce the same-frequency interference, a certain spectrum is reserved in the signal overlapping area of the two types of cells, and the two types of cells do not use the spectrum in the signal overlapping area. This spectrum is called the overlapping spectrum. Although the method of dividing the overlapping spectrum reduces the influence of co-channel interference on the cell throughput, it does not have a certain spectrum resource.

In order to further improve the utilization of the spectrum resources, the prior art provides a method for utilizing the overlapping spectrum: when the Evolved Node B (eNodeB) of the LTE cell finds that the user equipment (User Equipment, UE for short) is connected. When the LTE cell is better than the threshold (B1 measurement), the UE is triggered to perform the B1 measurement to detect the signal strength of the neighboring GERAN cell, and the base station analyzes the phase according to the B1 measurement report reported by the UE. The interference strength of the neighboring GERAN cell determines whether the UE can use the overlapping spectrum for data transmission.

The B1 measurement will increase the power consumption of the UE, and the reporting of the measurement report will also consume the air interface resources of the LTE cell, and the throughput can not be obtained in the scenario where the interference is always large, and resources are always wasted. SUMMARY OF THE INVENTION The embodiments of the present invention provide a method and an apparatus for improving spectrum utilization, which are used to solve the problem of power consumption of the UE and waste of air interface resources in the prior art.

A first aspect of the embodiments of the present invention provides a method for improving spectrum utilization, including: acquiring, by a base station of a first cell, energy saving state information of a second cell, where the first cell and the second cell are adjacent different systems a cell, and an overlapping portion exists between a frequency band of the first cell and a frequency band of the second cell, where the overlapping portion is an overlapping spectrum;

The base station of the first cell determines, according to the energy saving state information of the second cell, whether the second cell is in a power saving state;

When the second cell is in a power saving state, the base station of the first cell uses the overlapping spectrum for data transmission.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the base station of the first cell, before determining whether the second cell is in a power saving state, further includes:

Determining the interference of the second cell, and after the interference of the second cell reaches or is higher than the first preset threshold, performing a step of determining whether the second cell is in a power saving state.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the base station of the first cell determines that the second cell is in an energy saving manner After the state, the method further includes: determining interference of the second cell, and performing a step of performing data transmission by using the overlapping spectrum when the interference of the second cell is lower than a second preset threshold.

With reference to the first or second possible implementation manner of the first aspect, in the third possible implementation manner of the foregoing aspect, the determining, by the second cell, the interference includes:

Sending, by the user equipment UE having the different system measurement capability, a different system measurement indication, where the different system measurement indication is used to instruct the UE to perform the heterogeneous system measurement within a preset time;

Receiving a different system measurement report reported by the UE;

The interference of the second cell is determined according to the different system measurement report.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, when the base station of the first cell determines that the second cell is in a power saving state, and performs determining When the interference of the second cell is interrupted, the second cell is determined The inter-system measurement indication sent before the energy-saving state is used to indicate that the UE performs the inter-system measurement in the first preset time, and the inter-system measurement indication sent after determining that the second cell is in the power-saving state is used to indicate the The UE performs the inter-system measurement in the second preset time, where the second preset time is less than the first preset time.

With reference to the third or fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the foregoing aspect, after the interference of the second cell is obtained according to the different system measurement report, :

And when the interference of the second cell reaches or is higher than the first or second preset threshold, sending an indication to the UE to stop the measurement of the different system.

With reference to the first aspect to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the base station of the first cell acquires energy saving state information of the second cell, including :

Sending a query message to the centralized control device, where the query message is used to query the energy saving state of the second cell;

Receiving a response message sent by the centralized control device, where the response message includes energy saving state information of the second cell.

With reference to the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the centralized control device is an MME, and the query message is a radio access network information request RAN INFORMATION REQUEST The message, the RAN INFORMATION REQUEST message carries an energy saving indication Energy Savings Indication cell and identification information of the second cell.

In conjunction with the seventh possible implementation of the first aspect, in an eighth possible implementation manner of the first aspect, the response message is MME direct information transmission MME DIRECT

The information TRANSFER message, the energy saving state information of the second cell is an energy saving indication Energy Savings Indication cell.

A second aspect of the embodiments of the present invention provides an apparatus for improving spectrum utilization, where the base station side of the first cell includes:

An acquiring unit, configured to acquire energy saving state information of the second cell, where the first cell and the second cell are adjacent different system cells, and the frequency band of the first cell and the frequency band of the second cell There is an overlapping portion, and the overlapping portion is an overlapping spectrum; a determining unit, configured to determine, according to the energy saving state information of the second cell, whether the second cell is in a power saving state;

And a processing unit, configured to: when the second cell is in a power-saving state, use the overlapping spectrum to perform data transmission.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the method further includes: a determining unit, configured to determine, before, and/or after the determining unit determines whether the second cell is in a power saving state The interference of the second cell is described.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the determining unit determines, before the determining unit determines whether the second cell is in a power saving state When the interference of the second cell is described, the determining unit is further configured to:

Determining whether the interference of the second cell is higher than or equal to the first preset threshold, and the determining unit performs determining the second cell after the interference of the second cell reaches or is higher than the first preset threshold. Whether it is in a state of energy saving.

With reference to the first or second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the determining unit, in the determining unit, determining whether the second cell is in an energy saving manner When determining the interference of the second cell after the status, the determining unit is further configured to:

Determining whether the interference of the second cell is lower than a second preset threshold, and the processing unit performs data transmission using the overlapping spectrum when the interference of the second cell is lower than a second preset threshold. Steps.

With reference to one of the first to third possible implementations of the second aspect, in a fourth possible implementation of the second aspect, the method further includes:

a sending unit, configured to send a different system measurement indication to the user equipment UE with different system measurement capability, where the different system measurement indication is used to indicate that the UE performs an inter-system receiving unit within a preset time, and is configured to receive the UE Reported heterogeneous system measurement report;

The determining unit is configured to determine interference of the second cell according to the different system measurement report.

With reference to the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, before the determining unit determines that the second cell is in a power saving state, When the determining unit determines the interference of the second cell, the sending unit sends a different system measurement indication that is sent before the determining unit determines that the second cell is in a power-saving state, to indicate that the UE is in the first pre- And performing, by the sending unit, the different system measurement indication sent by the sending unit, after the determining unit determines that the second cell is in the power saving state, to indicate that the UE performs the different system measurement in the second preset time. The second preset time is less than the first preset time.

With reference to the fourth or fifth possible implementation of the second aspect, in a sixth possible implementation manner of the second aspect, the determining unit is further configured to determine, according to the different system measurement report, the second When the interference of the cell reaches or is higher than the first or second preset threshold, the sending unit is triggered to stop the indication of the inter-system measurement to the UE.

With reference to the second aspect to the sixth possible implementation of the second aspect, in a seventh possible implementation of the second aspect, the method further includes: an interface unit, and the obtaining unit is obtained by using the interface unit The energy saving state information of the second cell, where the interface unit is configured to send a query message to the centralized control device, where the query message is used to query the energy saving state of the second cell; And the response message sent by the centralized control device, where the response message includes energy saving state information of the second cell.

With reference to the seventh possible implementation manner of the second aspect, in an eighth possible implementation manner of the second aspect, the centralized control device is an MME, and the query message is a radio access network information request RAN INFORMATION REQUEST message The RAN INFORMATION REQUEST message carries an energy saving indication Energy Savings Indication cell and identification information of the second cell.

In conjunction with the eighth possible implementation of the second aspect, in a ninth possible implementation manner of the second aspect, the response message is MME direct information transmission MME DIRECT

The embodiment of the present invention obtains the energy-saving state information of the second cell by using the base station of the first cell, and determines whether the second cell is in the energy-saving state according to the energy-saving state information of the second cell, and uses the second when the second cell is in the energy-saving state. The overlapping spectrum of the cell and the first cell performs data transmission, which reduces the requirement for the UE to perform the measurement of the different system, and reduces the power consumption of the UE and the waste of the air interface resources while improving the spectrum utilization. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a flowchart of a method for improving spectrum utilization according to an embodiment of the present invention; FIG. 2A is a flowchart of a method for a base station of a first cell to obtain an energy-saving identifier of a second cell according to an embodiment of the present disclosure;

2B is a signaling flow chart of the method shown in FIG. 2A;

FIG. 3A is a flowchart of another method for improving spectrum utilization according to an embodiment of the present invention; FIG. 3B is a flowchart of still another method for improving spectrum utilization according to an embodiment of the present invention; FIG. A flowchart of a method for determining inter-system cell interference is provided by the example. FIG. 5 is a schematic structural diagram of an apparatus for improving spectrum utilization according to an embodiment of the present invention; FIG. 6 is another improvement provided by an embodiment of the present invention. Schematic diagram of a device for spectrum utilization;

FIG. 7 is a schematic structural diagram of another apparatus for improving spectrum utilization according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of another apparatus for improving spectrum utilization according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

As mentioned in the background, in order to reduce signal mutual interference between the GERAN cell and the LTE cell, the signal coverage of the LTE cell overlaps with the signal coverage of the GERAN cell. The area planning buffer area, reserved for overlapping spectrum. The prior art method of utilizing overlapping spectrum requires a UE having a different system measurement capability to perform measurement, and analyzes the interference strength of the GERAN cell according to the measurement report to determine whether the overlapping spectrum is enabled.

However, the measurement of the different system will increase the power consumption of the UE, and the reporting of the measurement report will also consume the air interface resources of the LTE cell. Especially in the scenario where the interference has been very large, the UE frequently performs the measurement of the different system and reports the measurement report. Unable to get throughput gains, and always waste resources. The present application fully considers these problems, and determines whether to enable the overlapping spectrum by judging the energy-saving state of the GERAN cell. When the GERAN cell is in the energy-saving state, the interference to the neighboring cell is usually small, especially in the fully-off energy-saving state. Therefore, the adjacent LTE cell can use the overlapping spectrum for data transmission, which improves the spectrum utilization. , does not affect the throughput gain.

Specifically, the energy-saving state of the neighboring GERAN cell can be queried by the base station to which the LTE cell belongs. When the GERAN cell is in the energy-saving state, the base station can determine to use the overlapping spectrum for data transmission, and can not find and indicate the measurement capability with the different system. The UE performs heterogeneous system measurements. In particular, when the GERAN cell is in a power-saving state, especially when the GERAN cell is set to the fully-off state by the base station to which the GERAN cell belongs, the base station to which the LTE cell belongs may not query the UE supporting the hetero-system measurement to perform the inter-system measurement, but directly The use of the overlapping spectrum for data transmission, thus saving the air interface resources that are wasted by transmitting the indication measurement message and receiving the reported measurement report by the different system measurement, and reducing the power consumption of the UE.

The LTE cell and the GERAN cell are taken as an example for description. However, the present invention is not limited thereto, and may be applied to other inter-system cells that reserve overlapping spectrum, hereinafter referred to as a first cell and a second cell. The first cell and the second cell are adjacent different system cells, and there is an overlapping portion between the frequency band of the first cell and the frequency band of the second cell, and the overlapping portion is an overlapping spectrum.

The following is a detailed description of the following embodiments: FIG. 1 is a flowchart of a method for improving spectrum utilization according to an embodiment of the present invention.

As shown in Figure 1, the method is performed by a base station, and the method includes:

S101. The base station of the first cell acquires the energy-saving state information of the second cell, where the first cell and the second cell are adjacent different system cells, and the frequency band of the first cell overlaps with the frequency band of the second cell. The portion of the overlap is the overlapping spectrum.

S102. The base station of the first cell determines, according to the energy saving state information of the second cell, whether the second cell is In a state of energy saving;

S103. When the second cell is in a power saving state, the base station of the first cell determines that the overlapping spectrum can be used for data transmission.

The first cell may be an LTE cell, and the second cell may be a GSM cell or an EDGE cell, and the energy saving state information of the second cell may be in a power saving state and in a non-energy saving state, between the second cell and the first cell. There is an overlapping spectrum in the buffer area.

The base station of the first cell may determine whether the second cell is in a power saving state when it finds that the air interface resource of the first cell is insufficient and finds that there is an unused spectrum resource of the second cell and the first cell. Alternatively, when other preset conditions are met, it may be started to determine whether the second cell is in a power saving state. The invention is not limited. Specifically, it is determined by the energy saving identifier of the second cell whether the second cell is in a power saving state.

If the base station of the first cell determines that the second cell is in the energy saving state according to the energy saving identifier of the second cell, it may determine that the overlapping spectrum is used for data transmission.

Specifically, the data transmission by using the overlapping spectrum may include: the base station indicates that all UEs in the first cell use the overlapping spectrum for data transmission, or the base station determines one or more UEs according to the location of the one or more UEs in the first cell. Use overlapping spectrum for data transmission. The invention is not limited.

It should be noted that, when the second cell is in the power-saving state, the second cell may be controlled to be completely closed by the base station to which the second cell belongs, and the second cell does not generate a signal that interferes with the first cell, therefore, the first cell If the base station of the cell determines that the second cell is in the energy-saving state, the data may be directly transmitted by using the overlapping spectrum, and the UE having the measurement capability of the different system does not need to find the interference strength of the signal of the second cell to the signal of the first cell. Within the tolerance of the UE. Therefore, the UE does not need to perform the inter-system measurement, which reduces the power consumption of the UE, and saves the air interface resources that are wasted by transmitting the indication measurement message and receiving the report of the measurement by the different system measurement. At the same time, the overlapping spectrum is utilized, and the spectrum is improved. Utilization rate. In addition, the second cell may be controlled by the base station to which the second cell belongs to be partially closed. In this case, the interference of the second cell to the first cell is relatively small. Therefore, the base station of the first cell may determine that the second cell is in the second cell. In the energy-saving state, the overlapping spectrum is used for data transmission, and it is not necessary to search for the UE with the different system measurement capability to determine whether the interference strength of the signal of the second cell to the signal of the first cell is within the tolerance range of the UE, so that the UE does not need to perform Different system measurement reduces the power consumption of the UE, and saves the measurement and transmission of the measurement signal of the different system measurement The wasteful air resources are collected by reporting the measurement report. At the same time, the overlapping spectrum is utilized, which improves the utilization of the spectrum. Of course, the UE can also perform short-term heterogeneous system measurement. Compared with the prior art, the UE can save energy by shortening the time of the UE different system measurement.

If it is determined that the second cell is not in the power saving state, the overlapping spectrum may not be used for data transmission.

It should be noted that, in a scenario where the signal of the second cell interferes with the signal of the first cell, the data transmission with the overlapping spectrum resources is not obvious, and the base station of the first cell does not need to use valuable The air interface resource indicates that the UE with the different system measurement capability performs the heterogeneous system measurement and reports the measurement report.

The method for improving spectrum utilization provided by the embodiment, the base station of the first cell acquires the energy-saving state information of the second cell, and determines, according to the energy-saving state information of the second cell, whether the second cell is in the energy-saving state, and when the second cell is in the energy-saving state In the state, the data transmission is performed by using the overlapping spectrum of the second cell and the first cell, so that the base station to which the first cell belongs may not perform the measurement of the heterogeneous system by the UE supporting the measurement of the different system, but directly use the overlapping spectrum for data transmission. , reducing the power consumption of the UE and improving the utilization of the spectrum. FIG. 2A is a flowchart of a method for a base station of a first cell to obtain an energy-saving identifier of a second cell according to an embodiment of the present invention. As shown in FIG. 2, step S101 of the method shown in FIG. 1 may include:

The S20K sends a query message to the centralized control device, where the query message is used to query the energy saving state of the second cell;

S202. Receive a response message sent by the centralized control device, where the response message includes energy saving state information of the second cell.

The above centralized control device may be a management device for coordinating the operation of the base station within its control range, and the base station within the control range may include one or more base stations of the second cell, and a base station of the first cell. The centralized control device may be located in the core network or in the access network; and may be an existing device with centralized control function, for example, added to a Mobility Management Entity (MME) or a network management device. Maintenance of network configuration data and the function of interacting with the base station to save energy status information. It is also possible to set up a centralized control device to realize the maintenance of network configuration data and the function of interacting with the base station to save energy status information. In short, the present invention The example does not impose any restrictions on the implementation of the centralized control device.

In addition, the centralized control device can obtain the energy-saving status information of all the cells in its control range by configuring the peers, or obtain the energy-saving status information of all the cells in the control range by the active reporting of each network element, or manually input the information. The way to obtain energy-saving status information of all cells in its control range, such information is the information that the operator's network management personnel pay attention to in real time, usually dynamically monitored on the centralized control device, so it does not cause human resources. Too much waste.

When the centralized control device is the MME, the query message may be a RAN INFORMATION REQUEST message. When the RAN INFORMATION REQUEST message carries the energy saving indication Energy Savings Indication cell, the MME sends the second cell according to the cell. The energy-saving status information is sent to the base station of the first cell. In order to inform the MME of the energy-saving status information of the cell that needs to be obtained, the query message may further include the identifier information of the second cell. It can be seen that the energy saving indicating cell is used to indicate that the content of the query is the energy saving state information of the cell.

Correspondingly, the response message can be a direct information transmission for the mobility management entity (MME DIRECT

INFORMATION TRANSFER ) message, the MME DIRECT INFORMATION TRANSFER may carry an energy saving indication Energy Savings Indication cell, and the energy saving status information of the second cell may be sent to the base station of the first cell by using the Energy Savings Indication cell.

The identification information of the second cell may be the identifier information of the second cell that is pre-configured by the base station and has the overlapping spectrum of the first cell, or the identifier of the second cell that is obtained by the measurement of the different system, which is not limited by the present invention.

Figure 2B is a signaling flow diagram of the method of Figure 2A. As shown in FIG. 2B, the method includes the following steps:

S211: The base station of the first cell sends a radio access network information request to the MME (RAN)

INFORMATION REQUEST) message carrying the Energy Savings Indication cell and the identity of the second cell.

S212: The MME sends a mobile management entity direct information transmission to the base station of the first cell according to the received RAN INFORMATION REQUEST message (MME DIRECT

INFORMATION TRANSFER ) message, this message carries energy saving instructions Energy Savings Indication cell, the cell carries energy saving state information of the second cell.

S213: The base station of the first cell determines, according to the energy saving state information of the second cell, whether the second cell is in a power saving state.

The RAN INFORMATION REQUEST message includes a SON Transfer Application Identify cell, and the content and format of the cell are related to the 3rd Generation Partnership Project (3GPP) protocol. The same is true in R11 version 36.413, as shown in Table 1, and will not be described here.

Table 1

The SON Transfer Application Identify cell includes Energy Savings

The content and format of the Indication sub-cell are the same as those of the R11 version 36.413-b50 and subsequent protocol versions of the 3GPP protocol, as shown in Table 2, and are not described here.

Table 2

Correspondingly, the content and format of the QoS DIRECT INFORMATION TRANSFER message carrying the Energy Savings Indication cell are the same as those of the Rl l version 36.413-b50 and subsequent protocol versions of the 3GPP protocol, as shown in Table 3.

table 3

Letter 3⁄4/group name Existence Value range Cell type and reference information Semantic description

(IE/Group Name) (Presence) (Range) (IE type and (Semantics description) reference)

Self-organizing network transmission application Required (M)

(CHOICE SON Transfer

Application)

>Cell load report (Cell Load

Reporting )

>>Cell load report response (Cell Required (M) B.1.5

Load Reporting Response )

>Multi-cell load report

(Multi-Cell Load

Reporting )

>>Multi-cell load reporting response Required (M) B.1.9

(Multi-Cell Load

Reporting Response )

> Event triggered cell load report

( Event- Trigge red Cell Load

Reporting )

>> Event triggered cell load Required (M) B.1.12

Report response (Event-triggered

Cell Load Reporting

Response )

>Switch Report (HO Reporting) Empty (NULL)

> eUtran Cell Activation Information

(E-UTRAN Cell Activation)

>> Activate Cell Information Response (Cell Required (M) B.1.15

Activation Response )

>Energy Savings (NULL) RAN-INFORMATION Indication Application SON

The identification of the reporting area in the Transfer cell (see TS 48.018 [18]) should be

The cell ID in the RAN-INFORMATION-RE QUEST Application cell is the same, and eUtran needs to perform identification check on this content. (The Reporting Cell identifier field in the RAN-INFORMATION Application Container for SON Transfer (TS 48.018 [18]) shall be the same as received in the RAN-INFORMATION-RE QUEST Application Container. The RAT Discriminator field shall be set to Έ -UTRAN'. )

>Exception event report (Failure empty (NULL) RAN-INFORMATION

Event Reporting ) SON of the Application Structure

The cell identifier in the RAN-INFORMATION-RE QUEST Application cell is the same, and eUtran needs to check and check this content. (The Reporting Cell identifier field in the RAN-INFORMATION

Application Container for SON Transfer (TS 48.018 [18]) shall be the same as received in the the

RAN-INFORMATION-RE QUEST Application Container. The RAT Discriminator field shall be set to Έ-UTRAN'.) This embodiment obtains energy saving of the second cell by using the above message and cell query in the 3GPP protocol Rl l version. The status information makes it unnecessary to add a message flow and a cell between the base station and the MME. The method of this embodiment may be used between all base stations supporting the R11 version, the base station to which the second cell in which the overlapping spectrum exists, and the MME device connected to the base station to which the first cell belongs. In addition, the method provided in the foregoing embodiment can be used in combination with the existing heterogeneous system measurement, so that the basis of using the overlapping spectrum is more accurate in the process of improving spectrum utilization, and the UE different system can be reduced by combining Compared with the prior art, the measurement time can reduce the power consumption of the UE to a certain extent and save the air interface resources; at the same time, the accuracy of using the overlapping spectrum judgment is improved, thereby further improving the throughput gain.

Of course, the different system measurement can be applied before starting to determine the energy saving state of the neighboring system of the different system, or after starting to determine the energy saving state of the neighboring system of the different system and before the overlapping spectrum is enabled, or in both stages. The invention is not limited in any way, and can be selected by a person skilled in the art according to actual needs.

The following examples give several examples:

For example, the base station of the first cell may first indicate that the UE with the different system measurement capability in the first cell performs the measurement of the different system before starting to determine the energy-saving state of the neighboring cell of the different system, and when the measurement result shows that the interference of the different system is serious, The heterogeneous system measurement of the UE is stopped, so that it is not necessary to continue to waste measurement resources. At the same time, the method provided by the above embodiment is used to enable the overlapping spectrum to be activated when the adjacent system neighboring area is changed to the energy-saving state, without performing isochronous measurement to determine when the overlapping spectrum can be used, thereby When the time required for the measurement of the UE's different system is reduced, the spectrum utilization rate is improved. The method is especially applicable to a scenario in which the interference of the different system is large, which can greatly save the measurement time of the UE in different systems and reduce the power consumption of the UE.

Please refer to FIG. 3A , which is a flowchart of another method for improving spectrum utilization according to an embodiment of the present invention. As shown in FIG. 3A, before determining whether the second cell is in a power saving state, the first The base station of the cell may also send a different system measurement indication to the UE with the different system measurement capability, determine the interference of the second cell according to the received measurement report, and use the figure after the interference of the second cell is higher than the first preset threshold. The method shown in 1 determines whether or not to use an overlapping spectrum. The executor of the method is a base station of the first cell, and includes the following steps:

S301. Determine interference of the second cell.

S302. Determine whether the interference of the second cell is greater than or equal to the first preset threshold. And when the interference of the second cell is less than the first preset threshold, performing step S103-1, SP, determining that the overlapping spectrum can be used for data transmission; otherwise, performing the following steps:

S101-K acquires energy saving state information of the second cell.

S102-K determines, according to the energy saving state information of the second cell, whether the second cell is in an energy saving state. When the second cell is in the power-saving state, step S103-1 is performed to determine that the overlapping spectrum can be used for data transmission. Otherwise, step S104-1 is performed to determine that the overlapping spectrum cannot be used for data transmission.

It should be noted that, in this embodiment, although step S301 is performed first and then step S101-1 is performed, the present invention has no order requirement between the above steps S301 and S101-1, and may be After determining the interference of the second cell, acquiring the energy-saving state information of the second cell, and acquiring the energy-saving state information of the second cell, determining the interference of the second cell, and the interference of the second cell is greater than or equal to the first When the threshold is preset, the obtained energy saving state information of the second cell is used. In the following embodiments, the order of the interference of the second cell and the step of acquiring the power saving state information of the second cell are also not sequentially required.

In addition, when it is determined that the second cell is in a power-saving state, the UE may continue to enable the inter-system measurement of the UE, and after the measurement result of the different system shows that the interference of the inter-system cell has been reduced to a tolerable range after being in the energy-saving state, The overlapping spectrum is used for data transmission. The method can refer to FIG. 3B, which is a flowchart of another method for improving spectrum utilization provided by an embodiment of the present invention. As shown in FIG. 3B, the following steps are included:

5301. Determine interference of the second cell.

S302: Determine whether the interference of the second cell is greater than or equal to the first preset threshold. And when the interference of the second cell is less than the first preset threshold, performing step S103-1, SP, determining that the overlapping spectrum can be used for data transmission; otherwise, performing the following steps:

S101-K acquires energy saving state information of the second cell. S102-K determines, according to the energy saving state information of the second cell, whether the second cell is in a power saving state. When the second cell is in the power-saving state, step S303 is performed; otherwise, step S104-1 is performed to determine that the overlapping spectrum cannot be used for data transmission.

S303. Determine interference of the second cell.

S304. Determine whether the interference of the second cell is less than a second preset threshold. And when the interference of the second cell is less than the second preset threshold, performing step S103-1, SP, determining that the overlapping spectrum can be used for data transmission; otherwise, performing step S104-1, determining that the overlap cannot be adopted. The spectrum is used for data transmission.

It can be seen that, in the embodiment shown in FIG. 3A, after determining that the second cell is in the energy-saving state, it can be further determined whether the interference of the second cell can be tolerated, and when it is determined that the interference can be tolerated, the handover is enabled. Stacked spectrum. In this way, the accuracy of the use of the overlapping spectrum can be improved to further improve the throughput gain.

It should be noted that the foregoing first preset threshold and the second preset threshold may be the same or different, and are set according to different requirements of the operator, and the present invention does not impose any limitation.

In addition, please refer to FIG. 4, which is a flowchart of a method for determining inter-system cell interference according to an embodiment of the present invention. For the foregoing steps S301 and S303, the method for determining the interference of the second cell may be implemented by the UE having the different system measurement capability, and may include the following steps: S401. Send a different system measurement indication to the UE with the different system measurement capability. The disparate system measurement indication is used to instruct the UE to perform an inter-system measurement within a preset time.

The preset time is notified by the base station to the UE, and a parameter may be notified to directly reflect the preset time. Several parameters may also be notified, and the UE obtains a preset time according to the parameters. For example, the base station can inform the UE how many times to measure and the measurement time interval, so that the UE can perform measurements accordingly. .

S402. Receive an inter-system measurement report reported by the UE.

S403. Obtain interference of the second cell according to the different system measurement report.

It should be noted that the above-mentioned different system measurement capability may refer to that the UE may also measure the signal strength of the second cell while accessing the first cell network, and the base station may determine the UE capability carried by the UE when accessing the first cell. Whether it has different system measurement capabilities. Optionally, the base station may select one or more UEs with different system measurement capabilities to send different system measurement indications in the UE accessing the first cell. For example, the base station may send an inter-system measurement indication to a UE having different system measurement capabilities, such as an Event Event that monitors Inter RAT neighbour becomes better than threshold.

The base station may instruct one or more UEs to perform the inter-system measurement, and the base station may receive the inter-system measurement report for a period of time or a certain number of UEs, and determine whether the interference of the second cell reaches the preset threshold according to the information of the inter-system measurement report.

In addition, in the foregoing steps S302 and S304, if it is determined whether the interference of the second cell reaches a preset threshold, the UE may perform a stop-system measurement indication to indicate that the UE stops the measurement of the different system, which may be reduced. The UE continuously measures the unnecessary power consumption caused by the measurement, and can reduce the air interface resources occupied by the UE continuously reporting the measurement report.

3B and FIG. 4, when the base station of the first cell performs the step of determining the interference of the second cell before and after determining that the second cell is in the power-saving state, the different system sent before determining that the second cell is in the power-saving state The measurement indication is used to indicate that the UE performs the inter-system measurement in the first preset time, and the inter-system measurement indication sent after determining that the second cell is in the power-saving state is used to instruct the UE to perform the inter-system measurement in the second preset time, where The second preset time is less than the first preset time. That is to say, before the determining, by the base station of the first cell, the UE in the first cell sends an inter-system measurement indication, the UE is instructed to perform the inter-system measurement in the first preset time. And when the measurement result of the different system shows that the interference of the different system cell reaches or exceeds the first preset threshold, the base station may notify the UE to stop the measurement of the different system, and determine whether the energy saving state of the different system cell is used to determine whether the handover can be adopted. Stacked spectrum. When it is known that the different system cell is in the energy-saving state, it can further initiate the measurement of the different system. Since the different system cell is in the energy-saving state, the interference situation at this time is relatively stable and does not change greatly. At this time, the UE can be measured to be shorter. Time, that is, whether the data can be transmitted using the overlapping spectrum according to the measurement result. In this way, the UE's different system measurement time can be saved, and the UE can save power. On the basis of the above methods, the base station of the first cell may also receive the energy-saving state change indication sent by the centralized control device, and specifically includes changing the energy-saving state and changing the change indication to the non-power-saving state, and the base station of the first cell according to the change indication For the specific content, it is determined that the overlapping spectrum is stopped or started, so that the base station of the first cell can adjust whether to stop or reuse the overlapping spectrum for data transmission according to the change of the energy-saving state of the second cell. That is, the base station can obtain the energy saving state information of the second cell by means of active query, or can obtain the event triggered manner. Energy saving status information of the second cell. For example, when the energy saving state of the second cell changes, the centralized control device notifies the base station of the first cell in time. FIG. 5 is a schematic structural diagram of an apparatus for improving spectrum utilization according to an embodiment of the present invention. The apparatus 1 for improving spectrum utilization is located at a base station side of a first cell, and may be set in a base station, or may be independent of a base station. As shown in FIG. 5, the apparatus 1 may include: an obtaining unit 11, a determining unit 12, and a processing unit 13.

The obtaining unit 11 is configured to obtain the energy saving state information of the second cell, where the first cell and the second cell are adjacent different system cells, and the frequency band of the first cell overlaps with the frequency band of the second cell In part, the overlapping portion is an overlapping spectrum.

The determining unit 12 is configured to determine, according to the energy saving state information of the second cell, whether the second cell is in a power saving state.

The processing unit 13 is configured to perform data transmission by using an overlapping spectrum when the second cell is in a power saving state.

The device in this embodiment can be used to implement the technical solution of the method embodiment shown in FIG. 1. The principle and the technical effect are similar, and details are not described herein again. FIG. 6 is a schematic structural diagram of another apparatus for improving spectrum utilization according to an embodiment of the present invention. As shown in FIG. 6, the apparatus of this embodiment may further include an interface unit 15, and the obtaining unit 11 obtains through the interface unit 15. Energy saving status information of the second cell. The interface unit 15 is configured to send a query message to the centralized control device, where the query message is used to query the energy saving state of the second cell, and the interface unit 15 is further configured to receive the response message sent by the centralized control device. The response message includes energy saving state information of the second cell.

Further, when the centralized control device is a mobility management entity (MME), the query message may be a radio access network information request (RAN INFORMATION REQUEST) message, and the RAN INFORMATION REQUEST message carries an energy saving indication (Energy Savings Indication) message. Identification information of the element and the second cell. Correspondingly, the response message may be an MME DIRECT INFORMATION TRANSFER message, and the energy saving status information of the second cell is an Energy Savings Indication (Cell).

The device of this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 1 to FIG. 2B. The implementation principle and technical effects are similar, and will not be described here. FIG. 7 is a schematic structural diagram of another apparatus for improving spectrum utilization according to an embodiment of the present invention. The apparatus according to the embodiment of the present invention may be a base station, based on the apparatus shown in FIG. 5 or FIG. 6, as shown in FIG. The apparatus of the embodiment of the present invention may further include: a determining unit 14.

The determining unit 14 is configured to determine interference of the second cell before and/or after the determining unit 12 determines whether the second cell is in a power saving state.

When the determining unit 14 determines the interference of the second cell before the determining unit 12 determines whether the second cell is in the power saving state, the determining unit 14 is further configured to determine whether the interference of the second cell reaches or exceeds the first preset threshold. And after the interference of the second cell reaches or is higher than the first preset threshold, the determining unit 12 performs a step of determining whether the second cell is in the power saving state. For example, when the determining unit 14 determines that the interference of the second cell is higher than or equal to the first preset threshold, the determining unit 14 may trigger the acquiring unit 11 to periodically obtain the energy saving state information of the second cell, and then the determining unit 12 may Whether the second cell is in the energy-saving state is determined according to the obtained energy-saving state information, and the processing unit 13 uses the overlapping spectrum to perform data transmission when the second cell is in the energy-saving state. In addition, the central control device may be actively sent to the base station of the first cell when the energy saving state information of the second cell changes, and when the determining unit 14 determines that the interference of the second cell reaches or exceeds the first preset threshold. The triggering unit 12 is triggered to call the energy saving state information acquired by the obtaining unit 11. In addition, the base station of the first cell can also obtain the energy saving state information of the second cell by using an existing process, for example, by using MME DIRECT.

The information TRANSFER message is obtained. When the determining unit 14 determines that the interference of the second cell reaches or exceeds the first preset threshold, the determining unit 12 is triggered to invoke the energy saving state information acquired by the obtaining unit 11. In summary, this embodiment does not limit the order in which the obtaining unit 11 acquires the energy saving state information of the second cell and the determining unit 14 determines the interference of the second cell.

When the determining unit 14 determines the interference of the second cell after the determining unit 12 determines whether the second cell is in the power saving state, the determining unit 14 is further configured to: determine whether the interference of the second cell is lower than a second preset threshold, and The processing unit 13 performs a step of determining data transmission using the overlapping spectrum when the interference of the second cell is lower than the second preset threshold. For example, when the determining unit 12 determines that the second cell is in the power saving state, the determining unit 14 determines the interference of the second cell, and when the interference of the second cell is lower than the preset threshold, the trigger processing unit 13 performs the use of the overlapping spectrum. The step of data transmission.

The base station of this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 1-3B, and the implementation principle and technical effects are similar, and details are not described herein again. FIG. 8 is a schematic structural diagram of another apparatus for improving spectrum utilization according to an embodiment of the present invention. On the basis of the apparatus shown in FIG. 7, as shown in FIG. 8, the apparatus of the embodiment of the present invention may further include: 16. Receiving unit 17.

The sending unit 16 is configured to send a different system measurement indication to the UE having the different system measurement capability, where the different system measurement indication is used to indicate that the UE performs the different system measurement within the preset time.

The receiving unit 17 is configured to receive the inter-system measurement report reported by the UE.

The determining unit 14 is configured to determine interference of the second cell according to the different system measurement report. Optionally, when the determining unit 12 determines that the second cell is in the energy-saving state, and before the determining unit 13 determines the interference of the second cell, the sending unit 16 sends the different system before the determining unit 12 determines that the second cell is in the power-saving state. The measurement indication is used to indicate that the UE performs the inter-system measurement in the first preset time, and the sending unit 16 sends the inter-system measurement indication after the determining unit 12 determines that the second cell is in the power-saving state, to indicate that the UE is in the second preset time. Performing a different system measurement, wherein the second preset time is less than the first preset time.

Optionally, the determining unit 14 is further configured to: when determining, according to the inter-system measurement report, that the interference of the second cell reaches or exceeds the first or second preset threshold, the trigger sending unit 16 sends an indication to the UE to stop the different system measurement.

The base station of this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 1-4, and the implementation principle and the technical effect are similar, and details are not described herein again. An embodiment of the present invention further provides an optional implementation, that is, a base station, including the foregoing apparatus for improving spectrum utilization shown in FIG. 5-8, where the structure and technical effects of the base station are the same as before, and no longer Narration.

It should be noted that, in the above embodiment, the interface unit 15 may be an interface circuit of the base station, and is used to exchange information with the centralized control device.

The sending unit 16 and the receiving unit 17 may be respectively a transmitter or a transmitting circuit of the base station and a receiver or receiving circuit, configured to send data to the UE through the air interface and receive data sent by the UE. In addition, The transmitting unit 16 and the receiving unit 17 can be integrated to form a transceiver of the base station. The obtaining unit 11, the determining unit 12 and the processing unit 13 may be separately set up processors, or may be integrated in a processor of the base station, or may be stored in the memory of the base station in the form of program code, by the base station. A certain processor calls and executes the functions of the above obtaining unit 11, the determining unit 12 and the processing unit 13. The determining unit 14 is implemented as above, and may be a separately set processor, or may be integrated in a processor of the base station, or may be stored in the memory of the base station in the form of program code, by a processor of the base station. The function of the above determining unit 14 is called and executed. The processor described herein may be a Central Processing Unit (CPU) or an Application Specific Interliated Circuit (ASIC) or one or more integrated systems configured to implement embodiments of the present invention. Circuit. Please refer to FIG. 9, which is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 9, the base station includes a processor 91, a first interface circuit 92, and a second interface circuit 93. The memory 94 and the bus 95 are also shown. The processor 91, the first interface circuit 92, and the second The interface circuit 93, and the memory 94 are connected by the bus 95 and complete communication with each other. The first interface circuit 92 is configured to perform information interaction with the centralized control device; the second interface circuit is configured to perform information interaction with the UE.

The processor 91 is configured to perform the method provided by the foregoing various embodiments, for example, to perform the following process:

Obtaining the energy-saving state information of the second cell, where the first cell and the second cell are adjacent different system cells, and there is an overlapping portion between the frequency band of the first cell and the frequency band of the second cell, where the overlapping The part is the overlapping spectrum, and the energy saving state information of the second cell is obtained by sending the query message to the centralized control device by using the first interface circuit 92, and determining whether the second cell is in the power saving state according to the energy saving state information of the second cell; When the two cells are in the energy-saving state, the overlapping spectrum is used for data transmission.

Optionally, the processor 91 is further configured to: determine, according to the energy saving state information of the second cell, whether the second cell is in a power saving state or before, determining interference of the second cell. If the interference of the second cell is determined before determining whether the second cell is in the power saving state, the processor 91 is further configured to determine whether the interference of the second cell is higher than or equal to a first preset threshold, and the interference in the second cell is reached. Or After the preset threshold is exceeded, the step of determining whether the second cell is in the power saving state is performed. If the interference of the second cell is determined after determining that the second cell is in the power saving state, the processor 91 is further configured to determine the interference of the second cell. Whether the second preset threshold is lower than the second preset threshold, and when the interference of the second cell is lower than the second preset threshold, the step of performing data transmission by using the overlapping spectrum is performed.

It should be noted that the processor 91 herein may be a processor or a general term of multiple processing elements. For example, the processor may be a Central Processing Unit (CPU), or may be an Specific Integrated Integrated Circuit (ASIC), or may be configured to implement one or more integrations of embodiments of the present invention. The circuit, for example: one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs).

The memory 94 may be a storage device or a collective name for a plurality of storage elements, and is used to store executable program code or parameters, data, and the like required for the operation of the access network management device. And the memory 94 may include random access memory (RAM), and may also include non-volatile memory, such as disk storage, flash memory, and the like.

Bus 95 can be an industry standard architecture ( Industry Standard Architecture ,

ISA) Bus, Peripheral Component (PCI) bus or Extended Industry Standard Architecture (ESA) bus. The bus 95 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 9, but it does not mean that there is only one bus or one type of bus.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, when executed, The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Finally, it should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting thereof; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

Claim

A method for improving spectrum utilization, characterized in that it comprises:

The base station of the first cell acquires the energy saving state information of the second cell, where the first cell and the second cell are adjacent different system cells, and the frequency band of the first cell and the frequency band of the second cell There is an overlapping portion, and the overlapping portion is an overlapping spectrum;

The method according to claim 1, wherein the base station of the first cell further includes: before determining whether the second cell is in a power saving state,

The method according to claim 1 or 2, wherein, after determining that the second cell is in a power-saving state, the base station of the first cell further includes:

Determining interference of the second cell, and performing a data transmission using the overlapping spectrum when the interference of the second cell is lower than a second preset threshold.

The method according to claim 2 or 3, wherein the determining the interference of the second cell comprises:

Receiving a different system measurement report reported by the UE;

The method according to claim 4, wherein when the base station of the first cell performs a step of determining interference of the second cell before and after determining that the second cell is in a power-saving state And determining, by the UE, that the second system is in a power-saving state, the inter-system measurement indication is used to indicate that the UE performs the inter-system measurement in the first preset time, and sends the difference after determining that the second cell is in the energy-saving state. The system measurement indication is used to indicate that the UE performs an inter-system measurement in a second preset time, where the second preset time is less than the first preset time.

The method according to claim 4 or 5, further comprising: after obtaining the interference of the second cell according to the different system measurement report, further comprising:

The method according to any one of claims 1-6, wherein the acquiring, by the base station of the first cell, the energy saving state information of the second cell includes:

The method according to claim 7, wherein the centralized control device is an MME, and the query message is a radio access network information request RAN INFORMATION

The REQUEST message, the RAN INFORMATION REQUEST message carries the energy saving indication Energy Savings Indication cell and the identification information of the second cell.

The method according to claim 8, wherein the response message is an MME direct information transmission MME DIRECT INFORMATION TRANSFER message, and the energy saving state information of the second cell is an energy saving indication Energy Savings Indication cell.

A device for improving spectrum utilization, which is located on a base station side of a first cell, and is characterized by:

An acquiring unit, configured to acquire energy saving state information of the second cell, where the first cell and the second cell are adjacent different system cells, and the frequency band of the first cell and the frequency band of the second cell There is an overlapping portion, and the overlapping portion is an overlapping spectrum;

a determining unit, configured to determine, according to the energy saving state information of the second cell, whether the second cell is in a power saving state;

The device according to claim 10, further comprising: a determining unit, configured to determine the second cell before and/or after the determining unit determines whether the second cell is in a power saving state Interference.

12. The apparatus according to claim 11, when the determining unit is in the determining unit And determining, when determining whether the second cell is in a power-saving state, determining the interference of the second cell, the determining unit is further configured to:

The apparatus according to claim 11 or 12, wherein, when the determining unit determines interference of the second cell after the determining unit determines whether the second cell is in a power saving state, The determination unit is also used to:

The device according to any one of claims 11 to 13, further comprising: a sending unit, configured to send a different system measurement indication to the user equipment UE with different system measurement capability, the different system measurement indication And the method is configured to: the UE performs an inter-system receiving unit, where the UE performs a different system measurement report reported by the UE;

The device according to claim 14, wherein, before the determining unit determines that the second cell is in a power saving state, and after the determining unit determines interference of the second cell, And sending, by the determining unit, the inter-system measurement indication sent before the determining, by the determining unit, that the second cell is in a power-saving state, to indicate that the UE performs an inter-system measurement in a first preset time, where the sending unit is in the determining unit And determining, by the UE, that the second system is in a power-saving state, the system-specific measurement indication is used to indicate that the UE performs the different-system measurement in the second preset time, where the second preset time is less than the first preset time. .

16. Apparatus according to claim 14 or claim 15 wherein:

The determining unit is further configured to: when determining, according to the different system measurement report, that the interference of the second cell reaches or exceeds the first or second preset threshold, triggering, by the sending unit, sending a stop to the UE An indication of a different system measurement.

The device according to any one of claims 10-16, further comprising: An interface unit, and the obtaining unit obtains the energy saving state information of the second cell by using the interface unit, where the interface unit is configured to send a query message to the centralized control device, where the query message is used for checking Querying the power saving state of the second cell; and receiving the response message sent by the centralized control device, where the response message includes the energy saving state information of the second cell.

The device according to claim 17, wherein the centralized control device is an MME, the query message is a radio access network information request RAN INFORMATION REQUEST message, and the RAN INFORMATION REQUEST message carries an energy saving indication Energy Savings Indication The identification information of the second cell of the cell.

The device according to claim 18, wherein the response message is an MME direct information transmission MME DIRECT INFORMATION TRANSFER message, and the energy saving state information of the second cell is an energy saving indication Energy Savings Indication cell.