WO2021056845A1

WO2021056845A1 - Method and device for improving handover success rate

Info

Publication number: WO2021056845A1
Application number: PCT/CN2019/124676
Authority: WO
Inventors: 王琪
Original assignee: 京信通信系统（中国）有限公司
Priority date: 2019-09-24
Filing date: 2019-12-11
Publication date: 2021-04-01
Also published as: CN110493834A

Abstract

Disclosed are a method and device for improving the handover success rate, which are used to solve the technical problem of low handover success rate in the cell handover process in the prior art. The method comprises: receiving handover measurement report information, wherein the handover measurement report information comprises at least one of reference signal received power and reference signal received quality of at least one cell adjacent to a serving cell corresponding to a terminal device; determining, according to a preset selection manner, a first neighboring cell to be handed over from at least one cell adjacent to the serving cell; determining resource availability information of the first neighboring cell to be handed over, and determining, according to the resource availability information, whether the resources of the first neighboring cell to be handed over are available for handover, wherein the resource availability information comprises predetermined indication information of whether the resources of the first neighboring cell to be handed over are available; and if the resources of the first neighboring cell to be handed over are available for handover, initiating a handover to the first neighboring cell to be handed over to hand over from the serving cell to the first neighboring cell to be handed over.

Description

Method and device for improving handover success rate

Technical field

This application relates to the field of communication technology, and in particular to a method and device for improving the handover success rate.

Background technique

In the existing handover technology, the measurement report message reported by the UE (User Equipment) will carry the cell ID of the corresponding serving cell and neighboring cells adjacent to the serving cell, and RSRP (Reference Signal Receiving Power, reference signal received power) And RSRQ (Reference Signal Receiving Quality, reference signal reception quality) and other information, and then the serving cell can select the largest RSRP or the best RSRQ or take both RSRP and RSRQ into consideration based on the above information. , Thereby completing the handover from the serving cell to the target cell.

However, even if the RSRP and RSRQ indicators of the selected target cell are good, but there is no available resource to receive the new UE, that is, the aforementioned terminal device cuts in, then the handover from the serving cell to the selected target cell will inevitably end in failure. Sometimes the serving cell has to re-select the second neighboring cell with the next RSRP and/or RSRQ index value as the target cell and re-initiate the handover procedure. In this way, not only the handover failure rate is increased, but also the handover delay due to the second handover is prolonged, and the user experience is reduced.

Summary of the invention

The embodiments of the present application provide a method and device for improving the handover success rate, which are used to solve the technical problem of the low handover success rate in the cell handover process in the prior art.

In a first aspect, a method for improving the success rate of handover is provided, which is applied to a base station, and the method includes:

Receiving handover measurement report information, where the handover measurement report information includes at least one of reference signal reception power and reference signal reception quality of at least one cell adjacent to the serving cell corresponding to the terminal device;

Determine the first neighboring cell to be handed over from the at least one cell adjacent to the serving cell according to a preset selection manner;

Determine the resource availability information of the first neighboring cell to be handed over, and determine whether the resources of the first neighboring cell to be handed over are available for handover according to the resource availability information, wherein the resource availability information includes all predetermined resources The indication information of whether the resources of the first neighboring cell to be handed over are available;

If the resources of the first neighboring cell to be handed over are available for handover, then a handover is initiated to the first neighboring cell to be handed over to switch from the serving cell to the first neighboring cell to be handed over.

In a possible implementation manner, the determining the resource availability information of the first neighboring cell to be handed over includes:

Determining the ID of the first neighboring cell to be handed over;

The resource availability information of the first neighboring cell to be handed over is determined according to the ID of the first neighboring cell to be handed over, wherein the ID of the first neighboring cell to be handed over is correspondingly bound to the resource availability information.

In a possible implementation manner, before determining the resource availability information of the first neighboring cell to be handed over, and determining whether the resources of the first neighboring cell to be handed over are available for handover according to the resource availability information, The method also includes:

Acquiring historical handover information, where the historical handover information includes at least handover failure information of a first cell in the at least one adjacent cell, and the handover failure information carries a first cause value;

Extract the first cause value in the handover failure information, and when the first cause value is a predetermined cause value, it is determined that the resources of the first cell are not available for handover, and the resources of the first cell are available The information is bound to the ID of the first cell.

Acquire historical handover information, where the historical handover information includes at least handover request information sent by a second cell in the at least one neighboring cell, and the handover request information carries a second reason value, and the second reason The value is used to characterize that the second cell switches the terminal device to a target cell adjacent to the second cell;

Obtain a second cause value from the handover request information, and determine that the resources of the second cell are not available for handover according to the second cause value, and compare the resource availability information of the second cell with the second cell ID binding.

Acquiring historical handover information, where the historical handover information at least includes handover request response information of a third cell among the at least one neighboring cell;

According to the handover request response information, it is determined that the resources of the third cell are available for handover, and then the resource availability information of the third cell is bound with the ID of the third cell.

In a possible implementation manner, the method further includes:

If the resources of the first neighboring cell to be handed over are not available for handover, a second neighboring cell to be handed over is determined from the at least one neighboring cell, wherein the reference signal received power of the second neighboring cell to be handed over And/or the reference signal reception quality is lower than the reference signal reception power and/or the reference signal reception quality of the first neighboring cell to be handed over;

Determine the resource availability information of the second neighbor to be handed over, and determine whether the resources of the second neighbor to be handed over are available for handover, wherein the resource availability information includes the predetermined second neighbor to be handed over Information indicating whether the resources of the zone are available;

If the resources of the second neighboring cell to be handed over are available for handover, then a handover is initiated to the second neighboring cell to be handed over to switch from the serving cell to the second neighboring cell to be handed over.

In a second aspect, a device for improving the success rate of handover is provided, which is applied to a base station, and the device includes:

A receiving unit, configured to receive handover measurement report information, where the handover measurement report information includes at least one of reference signal reception power and reference signal reception quality of at least one cell adjacent to the serving cell corresponding to the terminal device;

Determining the neighbor cell unit to be handed over, configured to determine the first neighbor cell to be handed over from the at least one cell adjacent to the serving cell according to a preset selection method;

The handover preparation unit is configured to determine the resource availability information of the first neighboring cell to be handed over, and determine whether the resources of the first neighboring cell to be handed over are available for handover according to the resource availability information, wherein the resource availability information Includes pre-determined indication information of whether the resources of the first neighboring cell to be handed over are available;

A handover execution unit, configured to, if the resources of the first neighboring cell to be handed over are available for handover, initiate a handover to the first neighboring cell to be handed over, so as to switch from the serving cell to the first neighboring cell to be handed over .

In a possible implementation manner, the handover preparation unit is configured to:

Determining the ID of the first neighboring cell to be handed over;

In a possible implementation manner, the device further includes a processing unit, configured to:

In a possible implementation manner, the device is also used for:

The technical solutions provided by the embodiments of the present application at least bring the following beneficial effects:

In the embodiment of the present application, based on the received handover measurement report information and the preset selection method, the first neighboring cell to be handed over can be determined from at least one cell adjacent to the serving cell corresponding to the terminal device, and then it can be determined The resource availability information of the first neighboring cell to be handed over, and judging whether the resources of the first neighboring cell to be handed over are available for handover according to the resource availability information, where the resource availability information includes an indication for predetermining whether the resources of the first neighboring cell to be handed over are available Information, that is, before the handover is initiated, it can be directly determined whether the first cell to be handed over is available for handover based on the resource availability information, which can eliminate the failure of handover due to the unavailable resources of the first cell to be handed over. The switching time consumed by the initiation of the second switching can reduce the switching delay, thereby improving the user experience.

Further, when it is determined that the resources of the first neighboring cell to be handed over are available for handover, a handover may be initiated to the first neighboring cell to be handed over, so as to switch from the serving cell to the first neighboring cell to be handed over. That is to say, on the basis of fully considering the preset selection mode (for example, the reference signal receiving power is larger and/or the reference signal receiving quality is better) of the first neighboring cell to be handed over, it is also added to determine the first to be handed over in advance. The handover to the first neighboring cell to be handed over will be initiated only when the resources of the neighboring cell are available, which can reduce the occurrence of handover failures due to the unavailable handover of the resources of the first neighboring cell to be handed over, which greatly improves the success of handover. Rate and an index that improves the handover success rate of the first neighboring cell to be handed over.

Description of the drawings

The drawings here are incorporated into the specification and constitute a part of the specification, show embodiments conforming to the application, and together with the specification are used to explain the principle of the application, and do not constitute an improper limitation of the application.

FIG. 1 is a schematic flowchart of a method for improving a handover success rate in an embodiment of the application;

2 is a schematic diagram of the flow of initiating handover from a serving cell to a target cell in an embodiment of this application; FIG. 3 is a schematic diagram of a flow of determining the resource availability information of the first neighboring cell to be handed over in an embodiment of this application;

4 is a schematic diagram of a flow of acquiring and recording resource availability information of neighboring cells in an embodiment of the application;

FIG. 5 is a schematic diagram of a structural block diagram of an apparatus for improving a handover success rate in an embodiment of the application;

Fig. 6 is a schematic diagram of a structural block diagram of a base station in an embodiment of the application.

detailed description

In order to enable those of ordinary skill in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings.

It should be noted that the terms "first" and "second" in the specification and claims of the application and the above-mentioned drawings are used to distinguish similar objects, and not necessarily used to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the application as detailed in the appended claims.

In the embodiments of the present application, "at least one" may mean at least two, for example, it may be two, three, or more, which is not limited in the embodiments of the present application.

In addition, the term "and/or" in this article is only an association relationship describing associated objects, which means that there can be three relationships. For example, A and/or B can mean that there is A alone, and A and B exist at the same time. There are three cases of B alone. In addition, the character "/" in this text, unless otherwise specified, generally indicates that the associated objects before and after are in an "or" relationship.

As mentioned above, in the prior art, when a terminal device needs to switch from a serving cell to another cell adjacent to the serving cell, it is only judged based on the feedback of the reference signal received power and/or reference signal received quality of the adjacent cell. That is, it is determined that the target cell with the highest reference signal received power or the highest reference information received quality is determined as the target cell, and the handover is performed directly. In this way, it is determined that the resources of the target cell do not allow the terminal device to access the target cell when handover from the serving cell to the target cell. In this way, the new target cell is determined only after the target cell returns the handover failure message, resulting in a low handover success rate during the cell handover process. It can be seen that there are technical problems in the prior art that the success rate in the cell handover process is low and the handover time is long.

In view of this, this application provides a method for improving the success rate of handover, by which method can determine whether the resources of the target cell are available for handover according to predetermined resource availability information. In this case, there is no need to wait until the terminal device has switched to the target cell. It is necessary to judge whether the resources of the target cell are available for handover, so as to avoid the problem of untimely handover or even unsuccessful handover. That is, this method is applied to the target cell selection process of the handover process on the source base station, by optimizing the handover process The target cell selection process can improve the handover success rate, while reducing the handover delay and improving the user experience.

The following describes the technical solutions provided by the embodiments of the present application in conjunction with the drawings in the specification.

Referring to FIG. 1, an embodiment of the present application provides a method for improving the success rate of handover, and the method may be executed by a base station. The specific process of this method is described as follows.

Step 101: Receive handover measurement report information, where the handover measurement report information includes at least one of reference signal reception power and reference signal reception quality of at least one cell adjacent to the serving cell corresponding to the terminal device.

In this embodiment of the application, when a terminal device is handed over from a serving cell to a cell adjacent to the serving cell, the base station may receive handover measurement report information sent by the terminal device, where the handover measurement report information includes at least the serving cell corresponding to the terminal device At least one of reference signal reception power and reference signal reception quality of at least one adjacent cell. That is, the handover measurement report information may only include the reference signal received power of at least one cell adjacent to the serving cell corresponding to the terminal device, or only the reference signal received power of at least one cell adjacent to the serving cell corresponding to the terminal device. The signal reception quality may also include reference signal reception quality and reference signal reception power of at least one cell adjacent to the serving cell corresponding to the terminal device.

Step 102: Determine the first neighboring cell to be handed over from at least one cell adjacent to the serving cell according to a preset selection method.

In the embodiment of the present application, after receiving the handover measurement report information, the first neighboring cell to be handed over may be determined from at least one cell adjacent to the serving cell according to a preset selection method. It should be noted that, for ease of description, in the embodiments of the present application, a cell adjacent to the serving cell that satisfies the preset selection method may be referred to as a target cell.

In the specific implementation process, when the handover measurement report information only includes the reference signal reception quality of at least one cell adjacent to the serving cell corresponding to the terminal device, the reference signal can be determined from the aforementioned at least one cell according to a preset selection method. The cell with the strongest signal reception quality is used as the first neighboring cell to be handed over, that is, the target cell.

In a specific implementation process, when the handover measurement report information only includes the reference signal received power of at least one cell adjacent to the serving cell corresponding to the terminal device, it can be determined from the aforementioned at least one cell according to a preset selection method. The cell with the highest received power of the reference signal serves as the first neighboring cell to be handed over, that is, the target cell.

In a specific implementation process, when the reference signal reception quality and reference signal reception power of at least one cell adjacent to the serving cell corresponding to the terminal device in the measurement report information are handed over, the reference signal reception quality and reference signal reception power may be selected from the foregoing at least one according to a preset selection method. The cell with the strongest reference signal reception quality is determined as the first neighbor cell to be handed over, that is, the target cell, or the cell with the highest reference signal received power is the first neighbor cell to be handed over, that is the target cell, or the reference signal can be considered comprehensively. A cell with stronger reception quality and higher reference signal reception power is used as the first neighboring cell to be handed over, that is, the target cell, which is not limited in the embodiment of the present application.

Step 103: Determine the resource availability information of the first neighboring cell to be handed over, where the resource availability information includes predetermined indication information of whether the resources of the first neighboring cell to be handed over are available.

Step 104: Determine whether the resources of the first neighboring cell to be handed over are available for handover according to the resource availability information.

In the embodiment of the present application, after the first neighboring cell to be handed over is determined, the resource availability information of the first neighboring cell to be handed over can also be determined. Further, after the resource availability information is determined, it can be determined whether the resources of the first neighbor to be handed over are available for handover according to the resource availability information, that is, it can be determined according to the predetermined first neighbor to be handed over included in the resource availability information. The indication information of whether the resources of the area are available determines whether the resources of the first neighboring cell to be handed over are available for handover. Specifically, the foregoing specific implementation manner for determining the resource availability information of the first neighboring cell to be handed over will be described in Embodiment 3 below, and will not be repeated here.

In this embodiment of the present application, when it is determined that the resources of the first neighboring cell to be handed over are available for handover, go to step 105, and when it is determined that the resources of the first neighboring cell to be handed over are not available for handover, go to step 106.

Step 105: If the resources of the first neighboring cell to be handed over are available for handover, initiate handover to the first neighboring cell to be handed over, so as to switch from the serving cell to the first neighboring cell to be handed over.

In the embodiment of the present application, when it is determined that the resources of the first neighboring cell to be handed over are available for handover, that is, when the first neighboring cell to be handed over meets the preset selection conditions and resources are available, it can be handed over from the serving cell to the first neighboring cell to be handed over. Area.

Step 106: If the resources of the first neighboring cell to be handed over are not available for handover, determine the second neighboring cell to be handed over from at least one cell adjacent to the serving cell, where the reference signal received power of the second neighboring cell to be handed over And/or the reference signal reception quality is lower than the reference signal reception power and/or reference signal reception quality of the first neighboring cell to be handed over.

In the embodiment of the present application, it is specifically determined whether the resources of the first neighboring cell to be handed over are available for handover and whether the resources of the second neighboring cell to be handed over are specifically determined based on the predetermined resource availability information, that is, the indication information of whether the resource availability information includes Whether the resources of the neighboring cell can be switched. That is, the method of determining whether the resources of the target cell are available for handover in the embodiment of this application is to directly determine whether the resources of the target cell are available for handover, instead of judging whether the resources of the target cell are available after the handover is initiated to the target cell. Handover, thereby shortening the handover time and improving the handover success rate.

In the specific implementation process, when it is determined that the resources of the first neighboring cell to be handed over are not available for handover, that is, when the resources of the first neighboring cell to be handed over are unavailable, the first neighboring cell to be handed over is determined from at least one cell adjacent to the serving cell. 2. Neighboring cells to be switched In other words, the second neighboring cell to be handed over is used as the target cell. In this way, it is possible to avoid the occurrence of a situation in which the terminal device is ready to switch to the first neighboring cell to be handed over to find that the resources of the first neighboring cell to be handed over are unavailable, thereby improving the success rate of handover.

In the specific implementation process, the reference signal reception power and/or reference signal reception quality of the second neighboring cell to be handed over is lower than the reference signal reception power and/or reference signal reception quality of the first neighboring cell to be handed over, that is, A cell with a lower reference signal received power and/or reference signal received quality than the first cell to be handed over is selected as the second neighbor cell to be handed over.

Step 107: Determine the resource availability information of the second neighboring cell to be handed over, and determine whether the resources of the second neighboring cell to be handed over are available for handover, wherein the resource availability information includes whether the resources of the second neighboring cell to be handed over are pre-determined are available Instructions.

Step 108: If the resources of the second neighboring cell to be handed over are available for handover, initiate handover to the second neighboring cell to be handed over, so as to switch from the serving cell to the second neighboring cell to be handed over.

In the specific implementation process, after the second neighbor cell to be handed over is determined, the resource availability information of the second neighbor cell to be handed over can also be determined, and the second neighbor cell to be handed over can be determined according to the resource availability information of the second neighbor cell to be handed over. Whether the resources of the handover neighboring cell are available for handover, when it is determined that the resources of the second neighboring cell to be handed over are available for handover, then a handover is initiated to the second neighboring cell to be handed over to switch from the serving cell to the second neighboring cell to be handed over, that is, the target cell .

Refer to FIG. 2, which is a schematic diagram of the implementation process of initiating handover from a serving cell to a target cell in an embodiment of this application.

Step 201: Receive handover measurement report information, and determine a target cell from at least one cell adjacent to the serving cell corresponding to the terminal device according to the handover measurement report information and the preset selection method, where the handover measurement report information includes at least the terminal At least one of reference signal reception power and reference signal reception quality of at least one cell adjacent to the serving cell corresponding to the device.

Step 202: Determine the resource availability information of the target cell, where the resource availability information includes predetermined indication information of whether the resources of the target cell are available.

Step 203: Determine whether the resources of the target cell are available for handover according to the resource availability information.

Step 204: If the resources of the target cell are available for handover, initiate handover to the target cell.

Step 205: If the resources of the target cell are not available for handover, a cell whose reference signal received power and/or reference signal received quality in the handover measurement report information is slightly lower than the target cell is determined as the target cell according to a preset selection method.

In the embodiment of the present application, after the new cell is determined as the target cell, step 202 may be transferred to continue execution, until it is determined that the resources of the target cell are available for handover, then the handover is initiated to the target cell.

In the embodiment of the present application, after the target cell is determined, the resource availability information of the target cell can be determined, and after the resource availability of the target cell is determined according to the resource availability information, a handover can be initiated to the target cell. When it is determined that the resources of the current target cell are unavailable, a new target cell can be determined again, and the resource availability information of the new target cell is determined, and the judgment is made again, until the target cell is determined to be available, then the handover is initiated.

FIG. 3 is a schematic diagram of an implementation process of determining the resource availability information of the first neighboring cell to be handed over in an embodiment of the application.

Step 301: Determine the ID of the first neighboring cell to be handed over.

Step 302: Determine the resource availability information of the first neighboring cell to be handed over according to the ID of the first neighboring cell to be handed over, where the ID of the first neighboring cell to be handed over is correspondingly bound to the resource availability information.

In the embodiment of the present application, after the first neighboring cell to be handed over is determined from at least one adjacent cell according to a preset selection method, the ID of the first neighboring cell to be handed over can be directly obtained to determine the first neighboring cell to be handed over. Switch the ID of the neighboring cell. Then, according to the ID of the first neighboring cell to be handed over, the resource available information of the first neighboring cell to be handed over can be determined, where the ID of the first neighboring cell to be handed over is correspondingly bound to the resource available information. Specifically, the specific implementation of the corresponding binding of the ID of the first neighboring cell to be handed over to the resource availability information will be described in the following embodiment 4, and will not be repeated here.

Figure 4 is a flow chart of the method for obtaining and recording the resource availability information of neighboring cells in an embodiment of the application, and the corresponding specific steps are as follows:

Step 401: Obtain historical switching information;

Step 402: According to the historical handover information, determine whether the resources of at least one cell adjacent to the serving cell are available, and record the resource availability information of the at least one cell and bind the resource availability information of the at least one cell to its ID .

In the embodiment of the present application, historical handover information can be obtained, so as to determine whether the resources of the cell are available according to the information in the historical handover information. In order to facilitate the understanding of those skilled in the art, several possible ways are listed below to explain how to switch based on the history. The information in the information is used to determine whether the resources of the cell are available. It should be understood that the following examples are only illustrative and do not limit the embodiments of the present application. Except for the methods listed below, it can be further implemented in the specific implementation process. Using other methods of determination, this article is not exhaustive.

In the embodiment of the present application, historical handover information can be obtained, where the historical handover information includes at least the handover failure information of the first cell in the at least one adjacent cell, and the handover failure information carries the first cause value; extracting the handover The first cause value in the failure information, and when the first cause value is a predetermined cause value, it is determined that the resources of the first cell are not available for handover, and the resource availability information of the first cell is bound to the ID of the first cell.

In the specific implementation process, the serving cell may initiate a handover request message to the neighboring cell, and then the serving cell receives the feedback about the handover failure information of the neighboring cell. When it is determined that the first reason value carried in the handover failure information is, for example, No Radio Resources Available in When Target Cell indicates that the neighboring cell resource is unavailable, the first reason value is considered to be the predetermined reason value, the neighboring cell resource can be recorded as unavailable, and the resource availability information of the neighboring cell, that is, the resource unavailability information of the neighboring cell, can be combined with its ID Bind it up.

That is to say, in the embodiment of the present application, it is possible to determine whether the resources of other cells are available according to the reason value in the handover failure information received by the current serving cell when the terminal needs to handover to other cells. In this way, since the resources of other cells are available based on the feedback of the handover failure information, the resource availability information of other cells can be determined more accurately.

In the embodiment of the present application, historical handover information can be obtained, where the historical handover information includes at least handover request information sent by a second cell in at least one neighboring cell, and the handover request information carries a second reason value, and the second reason The value is used to characterize that the second cell switches the terminal device to the target cell adjacent to the second cell, and then the second cause value can be obtained from the handover request information, and the resources of the second cell are determined to be unavailable for handover according to the second cause value , And bind the resource availability information of the second cell with the ID of the second cell.

In the specific implementation process, when the current serving cell of the terminal device, that is, the second cell, determines that the resources cannot be loaded by the terminal device, it can initiate a handover request message to a certain neighboring cell, that is, the target cell, that is, the second cell can Send handover request information to the target cell, so that the second reason value can be determined from the handover request information received by the target cell. When it is judged that the reason carried in the handover request message is the second reason value, such as Reduce load in serving cell and other indication services When the cell resource is unavailable information, the serving cell, that is, the second cell resource, can be recorded as unavailable, and the resource availability information of the serving cell can be bound to its ID.

The above method enables the base station to directly determine whether the neighboring cell resources are allowed to be accessed by the terminal device next time, which reduces the determination steps and shortens the handover time.

In the embodiment of the present application, historical handover information can also be obtained, where the historical handover information includes at least the handover request response information with the third cell in at least one adjacent cell, to determine that the handover is successful, and then can respond according to the handover request Information, it is determined that the resources of the third cell are available, and then the resource availability information of the third cell is bound with the ID of the third cell.

In the specific implementation process, when the serving cell sends a handover request message to at least one adjacent cell and receives the handover request response information of the third cell, it can determine the third cell's response information according to the handover request response information. The resources are available, and then the resource availability information of the third cell is bound with the ID of the third cell.

It should be noted that the first cell, the second cell, and the third cell in the aforementioned three ways of determining whether neighboring cell resources are available based on historical handover information may be any adjacent serving cell corresponding to the terminal device in this application. A community. In addition, in the embodiment of the present application, it is also possible to bind any cell resource available information adjacent to the serving cell corresponding to the terminal device in the present application determined according to the foregoing manner with the cell ID, and generate a binding correspondingly. The relationship table is determined, and the binding relationship table can be correspondingly stored in the base station.

In the embodiments of the present application, the historical handover information can be fully utilized to obtain the resource status of the neighboring cell adjacent to the serving cell, that is, during the historical switch-out or switch-in process of the terminal device, the handover request response information sent by the handover neighboring cell And the reason value carried in the handover request information and the handover failure information obtains the resource availability of the neighboring cell, and then the neighboring cell ID of the handover can be bound with the resource availability of the neighboring cell.

In this case, when a terminal device needs to initiate a handover next time, in the target cell selection process of the handover process, in addition to the traditional initial selection of the target cell based on the signal power and/or quality of the neighboring cell, the neighboring cell can also be considered comprehensively. Resource status, specifically, you can retrieve the recorded neighboring cell ID, and determine the availability of neighboring cell resources based on the neighboring cell ID, and then determine the final handover target cell based on the availability of neighboring cell resources, that is to say , The handover to the target cell will be initiated only when the signal power of the target cell is higher and/or the quality is better and resources are available, thereby maximizing the success rate of handover and shortening the handover delay.

Based on the same inventive concept, please refer to FIG. 5. The present application provides a device for improving the success rate of handover, which is applied to a base station, and the device includes:

The receiving unit 501 is configured to receive handover measurement report information, where the handover measurement report information includes at least one of reference signal reception power and reference signal reception quality of at least one cell adjacent to the serving cell corresponding to the terminal device;

The unit 502 for determining the neighboring cell to be handed over is configured to determine the first neighboring cell to be handed over from at least one cell adjacent to the serving cell according to a preset selection method;

The handover preparation unit 503 is configured to determine the resource availability information of the first neighboring cell to be handed over, and determine whether the resources of the first neighboring cell to be handed over are available for handover according to the resource availability information, wherein the resource availability information includes a predetermined first Indication information about whether the resources of the neighboring cell to be switched are available;

The handover execution unit 504 is configured to, if the resources of the first neighboring cell to be handed over are available for handover, initiate handover to the first neighboring cell to be handed over, so as to switch from the serving cell to the first neighboring cell to be handed over.

In a possible implementation manner, the handover preparation unit 503 is configured to:

Determine the ID of the first neighboring cell to be handed over;

According to the ID of the first neighboring cell to be handed over, the resource available information of the first neighboring cell to be handed over is determined, wherein the ID of the first neighboring cell to be handed over is correspondingly bound to the resource available information.

In a possible implementation manner, the device for improving the handover success rate further includes a processing unit, configured to:

Acquiring historical handover information, where the historical handover information includes at least handover failure information of a first cell in at least one adjacent cell, and the handover failure information carries a first cause value;

Extract the first cause value in the handover failure information, and when the first cause value is a predetermined cause value, it is determined that the resources of the first cell are not available for handover, and the resource availability information of the first cell is bound to the ID of the first cell set.

Obtain historical handover information, where the historical handover information includes at least handover request information sent by a second cell in at least one neighboring cell, and the handover request information carries a second cause value, which is used to characterize that the second cell will The terminal device switches to the target cell adjacent to the second cell;

The second cause value is obtained from the handover request information, and the resource of the second cell is determined to be unavailable for handover according to the second cause value, and the resource availability information of the second cell is bound to the ID of the second cell.

Acquiring historical handover information, where the historical handover information includes at least handover request response information of a third cell among at least one neighboring cell;

According to the handover request response information, it is determined that the resources of the third cell are available for handover, and the resource availability information of the third cell is bound with the ID of the third cell.

In a possible implementation manner, the device for improving the handover success rate is further used for:

If the resources of the first neighboring cell to be handed over are not available for handover, the second neighboring cell to be handed over is determined from at least one neighboring cell, where the reference signal reception power and/or reference signal reception of the second neighboring cell to be handed over The quality is lower than the reference signal received power and/or the reference signal received quality of the first neighboring cell to be handed over;

Determine the resource availability information of the second neighboring cell to be handed over, and determine whether the resources of the second neighboring cell to be handed over are available for handover, wherein the resource availability information includes predetermined indication information of whether the resources of the second neighboring cell to be handed over are available ；

In summary, in the embodiment of the present application, based on the received handover measurement report information and the preset selection method, the first neighbor to be handed over can be determined from at least one cell adjacent to the serving cell corresponding to the terminal device. Area, the resource availability information of the first neighboring cell to be handed over can then be determined, and the resource availability information of the first neighboring cell to be handed over can be determined according to the resource availability information, where the resource availability information includes the pre-determined information of the first neighboring cell to be handed over. The indication information of whether the resource is available, that is, before the handover is initiated, it can be directly determined whether the first cell to be handed over is available for handover according to the resource availability information, which can eliminate the problem that the resources of the first cell to be handed over are not available for handover. As a result, the switching time consumed for re-initiating the second switching after the switching fails can reduce the switching delay and improve the user experience.

Further, when it is determined that the resources of the first neighboring cell to be handed over are available for handover, a handover may be initiated to the first neighboring cell to be handed over, so as to switch from the serving cell to the first neighboring cell to be handed over. That is to say, on the basis of fully considering the preset selection mode (for example, the reference signal receiving power is larger and/or the reference signal receiving quality is better) of the first neighboring cell to be handed over, it is also added to determine the first to be handed over in advance. The handover to the first neighboring cell to be handed over will be initiated only when the resources of the neighboring cell are available, which can reduce the occurrence of handover failures due to the unavailable handover of the resources of the first neighboring cell to be handed over, which greatly improves the success of handover. Rate and an index to improve the success rate of the first neighbor cell to be handed over.

All relevant contents of the steps involved in the foregoing embodiment of the method for improving the handover success rate can be cited in the functional description of the functional module corresponding to the device for improving the handover success rate in the embodiment of the present application, and will not be repeated here.

The division of modules in the embodiments of this application is illustrative, and it is only a logical function division. In actual implementation, there may be other division methods. In addition, the functional modules in the various embodiments of this application can be integrated into one process. In the device, it can also exist alone physically, or two or more modules can be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or software function modules.

Based on the same inventive concept, an embodiment of the present application provides a base station. As shown in FIG. 6, the base station includes at least one processor 601 and a memory 602 connected to the at least one processor. The embodiment of the present application does not limit the processor The specific connection medium between the 601 and the memory 602. In FIG. 6, the processor 601 and the memory 602 are connected through a bus 600 as an example. The bus 600 is represented by thick lines in FIG. 6, and the connection modes between other components are It is merely a schematic description and is not intended to be limiting. The bus 600 can be divided into an address bus, a data bus, a control bus, etc. For ease of presentation, only a thick line is used in FIG. 6 to represent it, but it does not mean that there is only one bus or one type of bus.

In the embodiment of the present application, the memory 602 stores instructions that can be executed by at least one processor 601. By executing the instructions stored in the memory 602, the at least one processor 601 can execute the steps included in the aforementioned method for improving the handover success rate. .

Among them, the processor 601 is the control center of the base station, which can use various interfaces and lines to connect various parts of the entire base station. By running or executing instructions stored in the memory 602 and calling data stored in the memory 602, various types of the base station Function and processing data, so as to monitor the base station as a whole. Optionally, the processor 601 may include one or more processing units, and the processor 601 may integrate an application processor and a modem processor. The application processor mainly processes the operating system, user interface, and application programs. The adjustment processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 601. In some embodiments, the processor 601 and the memory 602 may be implemented on the same chip, and in some embodiments, they may also be implemented on separate chips.

The processor 601 may be a general-purpose processor, such as a central processing unit (CPU), a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, Implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.

The memory 602, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The memory 602 may include at least one type of storage medium, such as flash memory, hard disk, multimedia card, card-type memory, random access memory (Random Access Memory, RAM), static random access memory (Static Random Access Memory, SRAM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), magnetic memory, disk , CD, etc. The memory 602 is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto. The memory 602 in the embodiment of the present application may also be a circuit or any other device capable of realizing a storage function for storing program instructions and/or data.

By designing and programming the processor 601, the code corresponding to the method for improving the handover success rate introduced in the foregoing embodiment can be solidified into the chip, so that the chip can execute the steps of the aforementioned method for improving the handover success rate during operation. How to design and program the processor 601 is a technology well known to those skilled in the art, and will not be repeated here.

Based on the same inventive concept, the embodiments of the present application also provide a storage medium that stores computer instructions, and when the computer instructions run on the computer, the computer executes the steps of the aforementioned method for improving the handover success rate.

In some possible implementation manners, various aspects of the method for improving the handover success rate provided in this application can also be implemented in the form of a program product, which includes program code. When the program product runs on a base station, the The program code is used to make the base station execute the steps in the method for improving the handover success rate according to various exemplary embodiments of the present application described above in this specification.

Those skilled in the art should understand that the embodiments of the present application can be provided as methods, devices, or computer program products. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program codes.

This application is described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of this application. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims

A method for improving the success rate of handover, applied to a base station, characterized in that the method includes:

Receiving handover measurement report information, where the handover measurement report information includes at least one of reference signal reception power and reference signal reception quality of at least one cell adjacent to the serving cell corresponding to the terminal device;

Determine the first neighboring cell to be handed over from the at least one cell adjacent to the serving cell according to a preset selection manner;

Determine the resource availability information of the first neighboring cell to be handed over, and determine whether the resources of the first neighboring cell to be handed over are available for handover according to the resource availability information, wherein the resource availability information includes all predetermined resources The indication information of whether the resources of the first neighboring cell to be handed over are available;

If the resources of the first neighboring cell to be handed over are available for handover, then a handover is initiated to the first neighboring cell to be handed over to switch from the serving cell to the first neighboring cell to be handed over.
The method according to claim 1, wherein the determining the resource availability information of the first neighboring cell to be handed over comprises:

Determining the ID of the first neighboring cell to be handed over;

The resource availability information of the first neighboring cell to be handed over is determined according to the ID of the first neighboring cell to be handed over, wherein the ID of the first neighboring cell to be handed over is correspondingly bound to the resource availability information.
The method according to claim 1, wherein in said determining the resource availability information of the first neighboring cell to be handed over, and determining whether the resources of the first neighboring cell to be handed over are available according to the resource availability information Before switching, the method further includes:

Acquiring historical handover information, where the historical handover information includes at least handover failure information of a first cell in the at least one adjacent cell, and the handover failure information carries a first cause value;

Extract the first cause value in the handover failure information, and when the first cause value is a predetermined cause value, it is determined that the resources of the first cell are not available for handover, and the resources of the first cell are available The information is bound to the ID of the first cell.
The method according to claim 1, wherein in said determining the resource availability information of the first neighboring cell to be handed over, and determining whether the resources of the first neighboring cell to be handed over are available according to the resource availability information Before switching, the method further includes:

Acquire historical handover information, where the historical handover information includes at least handover request information sent by a second cell in the at least one neighboring cell, and the handover request information carries a second reason value, and the second reason The value is used to characterize that the second cell switches the terminal device to a target cell adjacent to the second cell;

Obtain a second cause value from the handover request information, and determine that the resources of the second cell are not available for handover according to the second cause value, and compare the resource availability information of the second cell with the second cell ID binding.
The method according to claim 1, wherein in said determining the resource availability information of the first neighboring cell to be handed over, and determining whether the resources of the first neighboring cell to be handed over are available according to the resource availability information Before switching, the method further includes:

Acquiring historical handover information, where the historical handover information at least includes handover request response information of a third cell among the at least one neighboring cell;

According to the handover request response information, it is determined that the resources of the third cell are available for handover, and then the resource availability information of the third cell is bound with the ID of the third cell.
The method of claim 1, wherein the method further comprises:

If the resources of the first neighboring cell to be handed over are not available for handover, a second neighboring cell to be handed over is determined from the at least one neighboring cell, wherein the reference signal received power of the second neighboring cell to be handed over And/or the reference signal reception quality is lower than the reference signal reception power and/or the reference signal reception quality of the first neighboring cell to be handed over;

Determine the resource availability information of the second neighbor to be handed over, and determine whether the resources of the second neighbor to be handed over are available for handover, wherein the resource availability information includes the predetermined second neighbor to be handed over Information indicating whether the resources of the zone are available;

If the resources of the second neighboring cell to be handed over are available for handover, then a handover is initiated to the second neighboring cell to be handed over to switch from the serving cell to the second neighboring cell to be handed over.
A device for improving the success rate of handover, applied to a base station, characterized in that the device includes:

A receiving unit, configured to receive handover measurement report information, where the handover measurement report information includes at least one of reference signal reception power and reference signal reception quality of at least one cell adjacent to the serving cell corresponding to the terminal device;

Determining the neighbor cell unit to be handed over, configured to determine the first neighbor cell to be handed over from the at least one cell adjacent to the serving cell according to a preset selection method;

The handover preparation unit is configured to determine the resource availability information of the first neighboring cell to be handed over, and determine whether the resources of the first neighboring cell to be handed over are available for handover according to the resource availability information, wherein the resource availability information Includes pre-determined indication information of whether the resources of the first neighboring cell to be handed over are available;

A handover execution unit, configured to, if the resources of the first neighboring cell to be handed over are available for handover, initiate a handover to the first neighboring cell to be handed over, so as to switch from the serving cell to the first neighboring cell to be handed over .
The device according to claim 7, wherein the handover preparation unit is configured to:

Determining the ID of the first neighboring cell to be handed over;

The resource availability information of the first neighboring cell to be handed over is determined according to the ID of the first neighboring cell to be handed over, wherein the ID of the first neighboring cell to be handed over is correspondingly bound to the resource availability information.
8. The device according to claim 7, wherein the device further comprises a processing unit for:

Acquiring historical handover information, where the historical handover information includes at least handover failure information of a first cell in the at least one adjacent cell, and the handover failure information carries a first cause value;

Extract the first cause value in the handover failure information, and when the first cause value is a predetermined cause value, it is determined that the resources of the first cell are not available for handover, and the resources of the first cell are available The information is bound to the ID of the first cell.
8. The device according to claim 7, wherein the device further comprises a processing unit for:

Acquire historical handover information, where the historical handover information includes at least handover request information sent by a second cell in the at least one neighboring cell, and the handover request information carries a second reason value, and the second reason The value is used to characterize that the second cell switches the terminal device to a target cell adjacent to the second cell;

Obtain a second cause value from the handover request information, and determine that the resources of the second cell are not available for handover according to the second cause value, and compare the resource availability information of the second cell with the second cell ID binding.
8. The device according to claim 7, wherein the device further comprises a processing unit for:

Acquiring historical handover information, where the historical handover information at least includes handover request response information of a third cell among the at least one neighboring cell;

According to the handover request response information, it is determined that the resources of the third cell are available for handover, and then the resource availability information of the third cell is bound with the ID of the third cell.
The device according to claim 7, wherein the device is further used for:

If the resources of the first neighboring cell to be handed over are not available for handover, a second neighboring cell to be handed over is determined from the at least one neighboring cell, wherein the reference signal received power of the second neighboring cell to be handed over And/or the reference signal reception quality is lower than the reference signal reception power and/or the reference signal reception quality of the first neighboring cell to be handed over;

Determine the resource availability information of the second neighbor to be handed over, and determine whether the resources of the second neighbor to be handed over are available for handover, wherein the resource availability information includes the predetermined second neighbor to be handed over Information indicating whether the resources of the zone are available;

If the resources of the second neighboring cell to be handed over are available for handover, then a handover is initiated to the second neighboring cell to be handed over to switch from the serving cell to the second neighboring cell to be handed over.