JP6830131B2 - Parameter setting device - Google Patents

Description

The present invention relates to the communication field, and more particularly to a parameter acquisition method, a parameter optimization method, and an apparatus and system thereof.

According to the current 3GPP standard, one of the functions of MRO (Mobility Robustness Optimization) is that it can detect link failures that occur during movement, and the link failures are too slow in handover (Too). Late Handover), Handover is too fast (Too)
It may include early handover and handover to Wrong Cell.

Of these, if the handover is too slow, the handover is not executed when the handover should be executed, which increases the residence time in the cell of the terminal device and causes a radio link failure (RLF). It means that the terminal device reestablishes the connection in another cell after it occurs and a connection failure occurs.

Handover is too fast if RLF occurs within a fairly short period of time after the terminal device successfully hands over from the source cell to the target cell, or a handover failure occurs during the handover process, after which. It means that the terminal device reestablishes the connection in the source cell.

Handover to the wrong cell means that RLF occurs within a fairly short period of time after the terminal device successfully hands over from the source cell to the target cell, or a handover failure occurs during the handover process. It means that the terminal device reestablishes the connection in cells other than the source cell and the target cell.

For now, the MRO detection mechanism can distinguish between the three types of connection failures mentioned above. After collecting a certain number of samples, the base station can determine whether the handover boundary with the target base station is appropriate. When adjustment is required, the base station notifies the adjacent cell of the parameter adjustment by a message (for example, Mobility Change Request).

The above-mentioned introduction to the background technology is for the purpose of clearly and completely explaining the technical proposal of the present invention so that those skilled in the art can easily understand it. These technical proposals should not be construed as well known to those skilled in the art as they are described in the background art portion of the present invention.

Current MRO detection mechanisms are only suitable for scenarios where cell coverage (ie, coverage) is relatively stable. However, in Rel. 12, the dynamic antenna system (AAS)
, Active Antenna System) is expected to be introduced, and the base station that deploys the AAS can dynamically adjust the parameters of the antenna set, thereby moving the cell coverage to meet the traffic demand. Can be changed. In this way, if the current mechanism is used for detection, the detection may result in inaccurate results. Therefore, it is necessary to further strengthen the current MRO mechanism.

An object of an embodiment of the present invention is to provide an information acquisition method, a parameter optimization method and a device, a system thereof, which correspond to cell coverage based on a dynamically adjusted parameter range. The cell type can be configured and the trigger conditions corresponding to the cell type can be further configured to meet the service requirements even when the cell range is dynamic.

According to the first aspect of the embodiment of the present invention, a method for acquiring information is provided, and the method is described.
The first base station includes receiving the information transmitted by the user equipment or the second base station or the third base station.
The information includes related information for determining the cell types of the first base station and the second base station when the initialization of the handover or the failure of the link occurs on the network side, or the information includes the information. Includes the absolute time when a handover initialization or link failure occurs in the user equipment.

According to the second aspect of the embodiment of the present invention, a method for acquiring information is provided, and the method is described.
The second base station includes receiving the information notified by the user device or the first base station or the third base station.
The information includes related information for determining the cell types of the first base station and the second base station when the initialization of the handover or the failure of the link occurs on the network side, or the information includes the information. Includes the absolute time when a handover initialization or link failure occurs in the user equipment.

According to the third aspect of the embodiment of the present invention, a method for acquiring information is provided, and the method is described.
The third base station receives the information notified by the user device, and the information is the first base station and the second base station when the initialization of the handover or the failure of the link occurs on the network side. Includes relevant information for determining the cell type of; and includes notifying the second or first base station of the information.

According to the fourth aspect of the embodiment of the present invention, a parameter optimization method is provided, the method of which is described.
When the base station that corrects the parameters detects that it is necessary to correct the parameters of the handover with the adjacent cell, the cell type of the source cell and the target cell is included, or the handover fails. This includes notifying the base station where the cell whose parameters need to be modified is located, with information including an absolute period indicating that it occurs frequently.

According to the fifth aspect of the embodiment of the present invention, a parameter optimization method is provided, the method of which is described.
Receives information sent by the base station that calibrates the parameters, including cell types of source and target cells, or an absolute period indicating that handover failures occur frequently;
Based on the information, evaluate whether to modify the handover parameter; and when the evaluation result is "correct the handover parameter", the base station that calibrates the handover parameter is asked. Includes sending the corresponding response message.

According to the sixth aspect of the embodiment of the present invention, an information acquisition device is provided, in which the device is
Includes a first receiving unit that receives information transmitted by a user device or a second or third base station, of which
The information includes related information for determining the cell types of the first base station and the second base station when the initialization of the handover or the failure of the link occurs on the network side, or the information includes the information. Includes the absolute time when a handover initialization or link failure occurs in the user equipment.

According to the seventh aspect of the embodiment of the present invention, an information acquisition device is provided, and the device is
Includes a second receiving unit that receives information notified by a user device or a first or third base station, of which
The information includes related information that determines the cell type of the first base station and the second base station when the initialization of the handover or the failure of the link occurs on the network side, or the information includes the information. Includes the absolute time when a handover initialization or link failure occurs in the user equipment.

According to the eighth aspect of the embodiment of the present invention, a parameter optimization device is provided, which device is
Includes cell types of source and target cells when it detects that the parameters of a handover with an adjacent cell need to be modified, or includes an absolute period indicating that handover failures occur frequently. Includes a first transmit unit that transmits information to the base station where the cell whose parameters need to be modified is located.

According to the ninth aspect of the embodiment of the present invention, a parameter optimization device is provided, which device is used.
A fifth receiving unit that receives information transmitted by a base station that calibrates parameters, including cell types of source and target cells, or an absolute period indicating that handover failures occur frequently;
Based on the information, a confirmation unit that evaluates whether to modify the handover parameter; and when the evaluation result of the confirmation unit is "correct the handover parameter", the handover parameter is calibrated. The base station includes a second transmission unit that sends the corresponding response message.

According to the tenth aspect of the embodiment of the present invention, a parameter configuration method is provided, wherein the method is described.
Includes that a base station or network-side entity determines cell coverage based on the parameter range of one or more sets of parameter collections.

According to the eleventh aspect of the embodiment of the present invention, a parameter configuration device is provided, which device.
Includes a first parameter configuration unit that determines cell coverage based on the parameter range of one or more sets of parameter collections.

According to the twelfth aspect of the embodiment of the present invention, a base station is provided, which includes the above-mentioned device.

According to the thirteenth aspect of the embodiment of the present invention, a network system is provided, which includes the base stations described above.

According to the fourteenth aspect of an embodiment of the present invention, a computer-readable program is provided, of which, when the program is executed in an information acquisition device or base station, the program tells the computer the information acquisition device or The above-mentioned information acquisition method is executed in the base station.

According to the fifteenth aspect of the embodiment of the present invention, a storage medium for storing a computer-readable program is provided, and the computer-readable program is used in a computer in an information acquisition device or a base station as described above. To execute.

According to the sixteenth aspect of the embodiment of the present invention, a computer-readable program is provided, and when the program is executed in a parameter optimization device or a base station, the program is transmitted to the computer by the information acquisition device. Alternatively, the above-mentioned parameter optimization method is executed in the base station.

According to the seventeenth aspect of the embodiment of the present invention, a storage medium for storing a computer-readable program is provided, in which the computer-readable program is used to the computer in an information acquisition device or a base station for the above-mentioned parameter optimization. Let the method run.

According to the eighteenth aspect of an embodiment of the present invention, when a computer-readable program is provided, of which the program is executed in an information acquisition device or a user device, the program is given to the computer by the information configuration device or The above-mentioned parameter configuration method is executed in the base station.

According to the nineteenth aspect of the embodiment of the present invention, a storage medium for storing a computer-readable program is provided, and the computer-readable program is used in a computer in an information configuration device or a base station as described above for a parameter configuration method. To execute.

A beneficial effect of the embodiments of the present invention is to construct a cell type corresponding to cell coverage and further configure a trigger condition corresponding to the cell type, thereby even when the cell range is dynamic. The base station, which can satisfy the service request and calibrate the parameters, further determines the parameters of the handover with the adjacent cell based on the collected information including the cell type or the absolute time of the handover failure. You can decide whether to fix it or not.

Specific embodiments of the present invention are disclosed in detail by reference to the descriptions and drawings described below, indicating aspects in which the principles of the present invention can be adopted. The embodiment of the present invention is not limited to these within the scope. Within the spirit and technical scope of the appended claims, the embodiments of the present invention may include various modifications, modifications and alternatives.

Also, the features described and / or shown for one embodiment may be used in one or more other embodiments in the same or similar manner and combined with features in other embodiments or in other embodiments. The features inside can be replaced.

It should be noted that terms such as "contain / have", as used herein, refer to the presence of a feature, element, step, or assemble, but may include one or more other features, elements, steps, or. It also refers to not excluding the existence or addition of an assembly.

Many aspects of the invention can be better understood by reference to the drawings below.
It is a flowchart of the parameter composition method in Example 1 of this invention. It is a flowchart of the parameter composition method in Example 2 of this invention. It is a block diagram of the parameter composition apparatus in Example 3 of this invention. It is a block diagram of the parameter composition apparatus in Example 4 of this invention. It is a flowchart of the information acquisition method in Example 6 of this invention. It is a flowchart of the information acquisition method in Example 7 of this invention. It is a flowchart of the information acquisition method in Example 8 of this invention. It is a flowchart of the information acquisition method in Example 9 of this invention. It is a flowchart of the information acquisition method in Example 10 of this invention. It is a flowchart of the information acquisition method in Example 11 of this invention. It is a flowchart (No. 1) of the parameter optimization method in Example 12 of this invention. It is a flowchart (No. 2) of the parameter optimization method in Example 12 of this invention. It is a block diagram of the information acquisition apparatus in Example 13 of this invention. It is a block diagram of the information acquisition apparatus in Example 14 of this invention. It is a block diagram of the information acquisition apparatus in Example 15 of this invention. It is a block diagram of the information acquisition apparatus in Example 16 of this invention. It is a block diagram of the information acquisition apparatus in Example 18 of this invention. It is a block diagram of the information acquisition apparatus in Example 19 of this invention. It is a block diagram of the information acquisition apparatus in Example 20 of this invention. It is a block diagram of the parameter optimization apparatus in Example 22 of this invention. It is a block diagram of the parameter optimization apparatus in Example 23 of this invention.

The aforementioned and other features of the present invention will become apparent by reference to the drawings and the following description. The specification and drawings specifically disclose embodiments of the invention, which indicate some embodiments in which the principles of the invention may be employed. It should be understood that the present invention is not limited to such embodiments, and conversely, the present invention includes all modifications, modifications, and alternatives that fall within the appended claims.

According to the current protocol, MROs are only suitable for scenarios where cell coverage is relatively stable. With the introduction of AAS, cell coverage will change dynamically, so the current MRO mechanism needs to be strengthened.

FIG. 1 is a flowchart of a parameter configuration method according to the first embodiment of the present invention. Configure the parameters on the base station side. As shown in FIG. 1, the method comprises the following steps.

Step 101: The base station establishes cell coverage based on the parameter range of the configured parameter set.

In this embodiment, one or more sets of parameter collections may be configured by the base station. For example, the parameter collection includes parameters of the cell antenna set such as power value, tilt angle, antenna forming mode, etc. Thus, the base station is based on the range of the parameters. The cell coverage can be determined, for example, the cell coverage can be divided into large, medium, and small. As a result, the service request can be satisfied by configuring different handover trigger conditions for the coverage of different cells.

In this embodiment, after the cell coverage is determined, the cell type corresponding to the cell coverage can be further configured. For example, when the cell coverage is divided into three types, large, medium, and small, the corresponding typological parameters may be k1, k2, and k3, or the cell coverage is large and medium. When divided into two types, the corresponding typological parameters may be k1 and k2.

In such cases, as shown in FIG. 1, the method further comprises step 102, ie,
Step 102: The base station constitutes a cell type corresponding to the coverage of the cell.

When the cell coverage changes, the base station can notify the adjacent base station of the changed cell type.

Among them, when the base station performs cell division, cell merger, or cell forming operation (operation), the cell coverage may change, so that the k value indicating the cell type may also change. The base station can transmit it to the adjacent base station using Served Cell Information IE, but is not limited to this message, and may notify the adjacent base station by another message.

FIG. 2 is a flowchart of the parameter configuration method of the second embodiment of the present invention. The parameters are configured on the network side entity, for example, OAM. As shown in FIG. 2, the method comprises the following steps.

Step 201: The network-side entity establishes cell coverage based on the parameter range of the configured parameter collection.

Step 202: Configure the corresponding cell type based on the cell coverage.

Step 203: Notify the base station of the configured cell type.

When a change in cell coverage occurs, the base station can notify the adjacent base station of the changed cell type, which is the same as in the first embodiment, and thus the description thereof will be omitted here.

As can be seen from the above embodiment, the cells are classified based on the cell coverage, different types of cells correspond to different parameter collections, and different handover trigger conditions (handover) for different cell types. Parameters) can be configured to satisfy service requirements.

FIG. 3 is a configuration diagram of the parameter configuration device according to the third embodiment of the present invention. As shown in FIG. 3, the device 300 includes a first parameter configuration unit 301 and a second parameter configuration unit 302.
Among them, the first parameter component unit 301 is used to determine the cell coverage based on the parameter range of one or more sets of parameter collections; the second parameter component unit 302 is used for the cell coverage. Used to construct the corresponding cell type.

In this embodiment, the device 300 may further include a second notification unit 303, which notifies the adjacent base station of the changed cell type information when a change in cell coverage occurs. Used for

FIG. 4 is a configuration diagram of the parameter configuration device according to the fourth embodiment of the present invention. As shown in FIG. 4, the device 400 includes a first parameter configuration unit 401 and a second parameter configuration unit 402.
Since the operation (function) is the same as that of the second embodiment, the description thereof will be omitted here.

As shown in FIG. 4, the device 400 may further include a first notification unit 403, which is used to notify the base station of the configured cell types.

In such a case, the base station can receive the cell type transmitted by the network-side entity.

As can be seen from the above embodiment, the base station or network-side entity constitutes a cell type based on cell coverage, cells of different types correspond to different parameter collections, and different handovers for different cell types. Parameters can be configured to satisfy service requirements.

Example 5 of the present invention provides an information acquisition method. The method includes the first base station receiving information transmitted by the user equipment or the second or third base station, of which the information is handover initialization or link failure on the network side. Includes relevant information for determining the cell types of the first and second base stations when

Among them, the first base station is the base station where the user equipment is located when the handover failure occurs, or the base station where the user equipment successfully reestablishes (connects) or establishes a new one; A base station is a base station in which a link failure occurs at the time of a handover failure and serves a user device before the link failure, or a base station in which a (connection) reestablishment or a new establishment is successfully performed. The third base station is a base station in which the user apparatus has successfully reestablished or newly established after the handover failed.

In this embodiment, the related information may be time-related information, and the first time (for example, timeConnFailure) from the start of the handover to the occurrence of the user device connection failure, and the present from the occurrence of the connection failure. The second time (eg, timeSinceFailure) up to the time (eg, when the time information described above is transmitted by the RLF Report, the current time is the time for the UE to transmit the RLF Report) may be included. Alternatively, only the second time from the connection failure to the current time may be included.

In this way, the source base station (first base station) can acquire the above-mentioned related information from another base station on the network side or from the user device, and based on the related information, this hand It is possible to determine how long it has been since the occurrence of the over-failure, and thereby the cell types of the local cell (source base station cell) and the target cell (target base station cell) at the time of the handover failure occurrence. That is, the k value can be grasped.

In this embodiment, the second base station receives the information notified by the user equipment or the first base station or the third base station, and the information causes a handover initialization or a link failure on the network side. Includes relevant information to determine the cell type of the 1st and 2nd base stations at the time of.

Further, when the second base station receives the information notified by the user apparatus or the third base station, the method further includes communicating the information to the first base station. In this way, the first base station can be made to acquire the related information.

In the present embodiment, the third base station receives the information notified by the user apparatus, and the information is the first base station and the first base station when a handover initialization or a link failure occurs on the network side. 2 Includes relevant information for determining the cell type of the base station; also notifies the second base station or the first base station of the information. In this way, the related information can be notified to the first base station directly or via the second base station.

As can be seen from the above embodiment, the first base station can acquire cell type information. Since the cell type corresponds to the cell coverage, the base station can make a determination based on the above-mentioned parameters when determining whether or not the settings of the handover parameters (for example, the handover trigger conditions) are appropriate. This allows service requirements to be met even when cell coverage can change dynamically.

Hereinafter, embodiments of the present invention will be described with reference to the drawings, taking as an example that the handover is too slow, the handover is too fast, and the handover is performed to an erroneous cell.

FIG. 5 is a flowchart of the information acquisition method according to the sixth embodiment of the present invention. In this embodiment, the handover failure is "the handover is too late". At the time of the handover failure, the base station (source base station) where the user equipment (UE) is located is the first base station; after the handover fails, the UE reestablishes (connection) or establishes a new one in the target cell. Moreover, the re-establishment or new establishment is successful, and the base station of the target cell is the second base station.

As shown in FIG. 5, the method comprises the following steps.

Step 501: Link failure on UE;
Among them, since the UE does not perform the handover when it should be handed over, the UE is the first.
It stayed in the cell of the base station for a long time, and a radio link failure (RLF, Radio Link Failure) occurred.

Step 502: The UE reestablishes or reestablishes a connection, and the reestablishment or new establishment is successful;
In this embodiment, the UE reselects the cell, reestablishes or newly establishes at the second base station, and the specific reestablishment or new establishment process is the same as that of the prior art. The explanation is omitted.

Step 503: After a successful re-establishment or new establishment, the UE sends relevant information to the second base station; the relevant information includes the second time described above (represented by T2);
In this embodiment, the relevant information may be included in the RLF report and notified to the second base station, for example, the relevant information may be included in an information element (IE) containing a timeSinceFailure. As described above, the second time represents the time from the occurrence of the connection failure to the transmission of the RLF Report. The message for transmitting the second time described above is not limited to this message, and may be notified to the second base station by any other message.

In addition, the UE may further notify the second base station of other related information by using the RLF report, and the related information to be notified is the same as that of the prior art. Omit.

Step 504: After the second base station receives the related information transmitted by the UE, the related information is transmitted to the first base station;
In this embodiment, the RLF Indication message may be transmitted to the first base station, and the instruction message includes an RLF report.

Step 505: After the first base station obtains the related information, the cell type of the target cell at the time of link failure, that is, the k value is determined based on the related information;
Among them, the source base station in which the handover failure occurs can determine how long has passed since the occurrence of the handover failure this time based on the first time and the second time, that is, the current hand. It is possible to know that the over-failure occurred before T hours, and the first base station can obtain the k value of its own cell before T hours; and the k value of the adjacent cell has changed. Occasionally, all notify the first base station, so that the first base station can determine the k values of all adjacent cells before the T time, thus the first base station can inform the relevant information. Based on this, the k value of the target cell can be determined.

FIG. 6 is a flowchart of the information acquisition method according to the seventh embodiment of the present invention. In this embodiment, the handover failure is "the handover is too fast". After a handover failure
The base station where the UE is located (source base station) is the first base station; after the handover fails, the UE
Reestablished or reestablished in the source cell, and reestablished or reestablished successfully. For example, in this embodiment, it is assumed that the connection is reestablished and the reestablishment is successfully performed.

As shown in FIG. 6, the method comprises the following steps.

Step 601: The UE receives the handover command (HO Command) transmitted by the source base station (first base station).

Steps 602, 603: The UE successfully hands over from the source cell (cell of 1st base station) to the target cell (HO Success, cell of 2nd base station) and immediately RLF occurs; or , Step 602', HO Failure occurs in the handover process.

Step 604: After the handover fails, the UE reestablishes the connection in the source cell.

Step 605: After successful re-establishment, the UE sends relevant information to the first base station; the relevant information represents the first time (represented by T1) and the second time (represented by T2) described above. Including.

Among them, the first base station is a source base station, and is also a base station that the UE successfully reestablished after the handover failed.

Further, since the content included in the related information and the transmission method are the same as those in the sixth embodiment, the description thereof will be omitted here.

Step 606: The first base station transmits the relevant information to the second base station;
Of these, an RLF Indication message may be transmitted to the second base station, and the instruction message includes an RLF report. It may be sent by another message.

Step 607: The second base station returns a HandOver Report to the first base station after receiving the relevant information transmitted by the UE;
Among them, the HO report notifies the first base station that the failure of this transmission is "handover is too fast".

Step 608: Since it is the same as the fifth embodiment, the description thereof is omitted here, and the execution order of the steps is not limited to the embodiment shown in FIG. 6, and is executed after the step 605 or 606. Is also good.

FIG. 7 is a flowchart of the information acquisition method according to the eighth embodiment of the present invention. In this embodiment, the handover failure is "handover to the wrong cell". After the handover failure, the base station (source base station) where the UE is located is the first base station; after the handover failure, the UE is reestablished or new in the cells of the third base station other than the source cell and the target cell. It is assumed that the establishment is performed and the re-establishment or new establishment is successfully performed. Among them, in the case of the target cell, the same as in Example 6.

As shown in FIG. 7, the method comprises the following steps.

Step 701: The UE receives the handover command (HO Command) transmitted by the source base station (first base station).

Since step 702, 703 or 702'is the same as step 602, 603 or 602'of Example 6, the description thereof will be omitted here.

Step 704: After the handover fails, the UE reestablishes or establishes a new connection in the cell of the third base station.

Step 705: After a successful re-establishment or new establishment, the UE sends relevant information to the third base station; the relevant information is the first time (represented by T1) and th. Including 2 hours (represented by T2);
Since the content included in the related information and the transmission method are the same as those in the seventh embodiment, the description thereof will be omitted here.

Step 706: After the third base station receives the related information, it transmits the related information to the second base station;
Of these, an RLF Indication message may be transmitted to the second base station, and the instruction message includes an RLF report.

Step 707: After the second base station receives the related information transmitted by the UE, it returns a handover report (HandOver Report) to the first base station and transmits the related information to the first base station. To do.

If steps 702 and 703 are performed (ie, a link failure occurs shortly after the successful handover), then step 706 and step 707 are performed after step 707.

If step 702'is executed (failure occurred during the handover process), step 708 is executed after step 705, and the related information is transmitted directly to the first base station, and also by the RLF Report. You may send it, but it is not limited to this message.

Step 709: Since it is the same as steps 608 and 505, the description thereof will be omitted here.

In the above embodiment, when the raw handover is too fast, the handover is too slow, or the handover occurs in the wrong cell, the first base station is the user equipment or another base station on the network side. Related information can be obtained from, and the cell types of the local cell and the target cell can be determined based on the related information. In this way, the first base station collects a certain number of samples containing cell types, and whether it is appropriate to set a parameter for handover with other base stations together with the sample. Can be judged.

Further, when the handover is too fast, the handover is too slow, or the handover occurs in an erroneous cell, the first base station is subjected to the initial handover from the user device or another base station on the network side. The absolute time at the time of the change or link failure can be obtained, thus the first base station can collect a certain number of samples containing the absolute time, and together with the sample with other base stations. It is possible to judge whether or not the setting of the handover parameter between the two is appropriate. Among them, the second base station or the third base station can receive the related information transmitted by the user device and calculate the absolute time when the handover initialization or the link failure of the user device occurs based on the related information. After that, the absolute time can be transmitted to the first base station or transmitted to the first base station via the second base station. Hereinafter, examples of the present invention will be described with reference to the drawings, taking as an example that the handover is too slow, the handover is too fast, and the handover is performed to an erroneous cell.

FIG. 8 is a flowchart of the information acquisition method according to the ninth embodiment of the present invention. In this embodiment, it will be described as an example that the handover is too slow. Since it is similar to Example 6, the steps similar to those in Example 6 will be briefly described, and the points different from those in Example 6 will be described in detail.

As shown in FIG. 8, the method comprises the following steps.

Since steps 801 to 803 are the same as steps 501 to 503 of the sixth embodiment, the description thereof will be omitted here.

Step 804: After the second base station receives the related information transmitted by the UE, the absolute time of the handover failure generated by the user device is calculated based on the related information;
Among them, the related information includes the second time, and thus the absolute time at the time of link failure (RLF) occurrence can be calculated based on the second time.

Step 805: The second base station transmits the absolute time to the first base station;
In this embodiment, the RLF Indication message may be transmitted to the first base station, and the instruction message includes the absolute time.

In this way, the first base station can collect a certain number of samples including the absolute time, and the first base station frequently causes handover failure in a certain period based on the sample. By this, it is possible to judge whether or not the setting of the parameter of the handover with the adjacent cell is appropriate, and in the case of adjustment required, the first base station is set to the base station where the cell requiring parameter correction is located. Notification is possible, that is, the base station in which the cell requiring parameter correction is located is notified that the parameter is to be adjusted, and after receiving the confirmation message from the base station, the parameter of the handover is corrected. The parameter optimization method corresponding to this method will be described in Examples described later.

FIG. 9 is a flowchart of the information acquisition method according to the tenth embodiment of the present invention. In this embodiment, the handover is too fast. Since it is based on Example 7, the technical features similar to those of Example 7 will be briefly described, and the technical features different from those of Example 7 will be described in detail. The explanation will be given by taking the reestablishment of the connection as an example.

As shown in FIG. 9, the method comprises the following steps.

Since steps 901 to 905 are the same as steps 601 to 605 of the seventh embodiment, the description thereof will be omitted here.

Step 906: Absolute time of handover initialization (for example, receiving a handover instruction) generated in the user apparatus based on the related information after the first base station receives the related information transmitted by the UE. Is calculated;
Among them, the first base station can estimate the absolute time at the time of handover initialization based on the first time and the second time.

Step 907: The first base transmits the absolute time to the second base station.

Step 908: The second base station returns a handover message to the first base station;
Since the process is the same as that of the prior art, the description thereof will be omitted here.

FIG. 10 is a flowchart of the information acquisition method according to the eleventh embodiment of the present invention. In this embodiment, a handover to an erroneous cell is taken as an example, and since it is based on the eighth embodiment, the same technical features as those of the eighth embodiment will be briefly described, and the technical features different from the eighth embodiment will be described. This will be described in detail.

As shown in FIG. 10, the method comprises the following steps.

Since steps 1001 to 1005 are the same as steps 701 to 705, the description thereof will be omitted here.

Step 1006: After the third base station receives the related information transmitted by the UE, the absolute time of the handover initialization generated by the user device is calculated based on the related information;
Among them, the first base station can estimate the absolute time at the time of handover initialization based on the first time and the second time.

Step 1007: Send the absolute time to the second base station;
Similar to the eighth embodiment, the RLF instruction message may be transmitted to the second base station.

Step 1008: After the second base station receives the absolute time transmitted by the UE, it returns a handover report (HO Report) to the first base station and transmits the absolute time to the first base station. To do.

Alternatively, step 1009 is performed instead of steps 1007 to 1008, and the absolute time is set to the first.
It may be transmitted to the base station, or may be transmitted by the RLF instruction message as in the eighth embodiment.

In Examples 9 to 11 described above, T1 and / or T2 for estimating the absolute time is T1 in Examples 6 to 8.
And T2 may be used to determine the cell type; and T1 and / or T2 for estimating the absolute time are only time values and are independent of the cell type determination. is there.

In the above embodiment, when the handover is too fast, the handover is too slow, or the handover occurs in the wrong cell, the first base station is transmitted from the user device or another base station on the network side. The relevant information can be obtained, and the absolute time during which the handover initialization or RLF occurred can be calculated based on the relevant information. In this way, the first base station can collect a fixed number of samples including the absolute time, and determines whether it is appropriate to set a parameter for handover with the adjacent cell together with the sample. it can.

In the above-described embodiment, the first base station, the second base station, and the third base station may be different base stations or may be the same base station.

As can be seen from the above embodiment, the first base station (source base station / base station that calibrates the parameters) can collect a certain number of samples including cell type or absolute time within a certain time period, and Based on the sample, the first base station can determine whether or not the parameters of the handover with the adjacent cell (handover trigger conditions) are appropriately set, and if adjustment is required, the base station. Can notify the adjacent base station where the cell requiring parameter correction is located, that is, notify the base station that the parameter is to be adjusted, and after receiving a confirmation message from the adjacent base station, the handover parameter. Make corrections. The parameter optimization method corresponding to this method will be described in Examples described later.

Example 12 of the present invention further provides a parameter optimization method on the side of the base station that calibrates the parameters, in which the base station that calibrates the parameters modifies the parameters of the handover with the adjacent cell. When it is detected that it is necessary, the base station where the cell for which the parameter needs to be corrected is located, including the cell types of the source cell and the target cell, or the information including the absolute period indicating that a handover failure occurs frequently. Includes notifying.

In this embodiment, the method further receives a response message returned from the base station where the parameter correction required cell is located, indicating that the handover parameter can be corrected; for the handover parameter. Including making corrections.

In this embodiment, on the base station side where the cell requiring parameter correction is located, the method includes cell types of source and target cells transmitted by the base station that calibrates the parameter, or frequently fails in handover. Receives information that includes an absolute period indicating that the) occurs; based on that information, evaluates whether or not to receive modifications to the handover parameters; modifications to the handover parameters. When receiving, it includes sending the corresponding response message to the base station that modifies the handover parameters.

In this embodiment, a method of obtaining a sample including cell types and optimizing the parameters based on Examples 5 to 8 will be described.

FIG. 11 is a flowchart of the parameter optimization method according to the twelfth embodiment of the present invention. As shown in FIG. 11, the first base station (source base station, base station for parameter calibration) collects a sample by the method described in Examples 5 to 8.

As shown in FIG. 11, the method comprises the following steps.

Step 1101: When the base station that calibrates the parameters detects that it is necessary to correct the parameters of the handover with the adjacent cell, the cell type information including the source cell and the target cell is stored in the cell that requires the parameter correction. Notify the base station;
Among them, MCR (MOBILITY CHANGE REQUEST) notifies the base station where the cell requiring parameter correction is located, and since this is the same as the conventional technique, the description thereof is omitted here.

Step 1102: The base station (adjacent base station) in which the cell for which the parameter needs to be corrected is located receives the cell type including the source cell and the target cell transmitted by the base station that calibrates the parameter.

Step 1103: Evaluate whether the base station where the parameter correction required cell is located needs to correct the parameters of the handover.

Step 1104: If a modification to the handover parameter is required, the base station where the parameter modification cell is located sends a confirmation message to the base station that calibrates the parameter;
Among them, the confirmation message may be an MCA (MOBILITY CHANGE ACKNOWLEDGE) message.

Step 1105: After receiving the confirmation message, the base station that calibrates the parameter corrects the parameter of the handover of the cell requiring the parameter correction.

Further, the parameter optimization method will be described based on Examples 9 to 11.

FIG. 12 is a flowchart (No. 2) of the parameter optimization method according to the twelfth embodiment of the present invention. As shown in FIG. 12, the method comprises the following steps.

Step 1201: Similar to step 1101, MCR (MOBILITY CHANGE REQUEST) may be used to notify the base station where the cell requiring parameter correction is located.

Step 1202: The base station where the parameter correction cell is located receives the information sent from the base station that calibrates the parameter, including a specific time zone;
In the present embodiment, the specific time zone refers to a period in which a certain type of handover failure frequently occurs, and thus, in the specific time zone, a certain type of handover failure frequently occurs. , It is necessary to modify the parameters of the handover.

Step 1203: The base station where the parameter correction required cell is located evaluates whether to correct the handover parameter using the above time information;
In this embodiment, the specific time zone is notified to the base station where the target cell is located, so that the base station where the target cell is located grasps which parameter is the parameter of the handover requiring modification. Yes, that is, it is a parameter of the handover used in the specific time zone.

Step 1204: If it is necessary to modify the parameters of the handover, the base station where the cell requiring the parameter modification is located sends a confirmation message to the base station that calibrates the parameters;
Among them, the confirmation message may be an MCA (MOBILITY CHANGE ACKNOWLEDGE) message.

Step 1205: After the base station that calibrates the parameters receives the confirmation message, it corrects the parameters of the handover of the cell that needs to be corrected.

As can be seen from the above embodiment, the base station that calibrates the parameters can collect information including the cell type or the absolute time of the handover failure, and uses the above information to modify the handover parameters. The cells that need to be determined can be determined, and parameter optimization can be performed accordingly.

FIG. 13 is a configuration diagram of the information acquisition device according to the thirteenth embodiment of the present invention. The device 1300 includes a first receiving unit 1301, which is used to receive information transmitted by a user device or a second or third base station, of which the information is networked. Includes relevant information on the side to determine the cell types of the first and second base stations when a handover initialization or link failure occurs;
Among them, the first base station is the base station in which the user device is located or the base station in which the user device has successfully reestablished or newly established when the handover failure occurs; the second base station is the handover. A base station in which a link failure occurs at the time of failure and serves the user equipment before the link failure, or a base station that has been successfully reestablished or newly established; the third base station is a handover. It is a base station that the user equipment successfully reestablished after the failure occurred.

In this embodiment, the related information is the same as that in the above-described embodiment, and thus the description thereof will be omitted here.

As shown in FIG. 13, the apparatus 1300 further includes a type determination unit 1302, and the type determination unit 1302 is the first base station and the first base station when a handover initialization occurs or a link failure occurs based on the related information. 2 Used to determine the cell type of the base station. Since the specific determination method is the same as that of the above-described embodiment, the description thereof will be omitted here.

In this embodiment, the apparatus corresponds to the source base station side (first base station), and the specific working method is the same as in Examples 6 to 8, so the description thereof will be omitted here.

FIG. 14 is a configuration diagram of the information acquisition device according to the 14th embodiment of the present invention. As shown in FIG. 14, the apparatus 1400 includes the second receiving unit 1401, and the second receiving unit 1401 is used to receive the information notified by the user apparatus or the first base station or the third base station. Among them, the information includes related information for determining the cell types of the first base station and the second base station on the network side when the handover initialization occurs or the link failure occurs;
Since the first base station, the second base station, and the third base station are the same as those in the above-described embodiment, the description thereof will be omitted here.

In this embodiment, when receiving the above-mentioned information notified by the user apparatus or the third base station, the apparatus 1400 further includes the first notification unit 1402, and the first notification unit 1402 transfers the information to the first base. Used to notify the station.

In this embodiment, the apparatus corresponds to the target base station side (second base station), and the specific working method is the same as in Examples 5 to 8, so the description thereof will be omitted here.

FIG. 15 is a block diagram of the information acquisition device according to the fifteenth embodiment of the present invention. As shown in FIG. 15, the device 1500 includes a third receiving unit 1501, and the third receiving unit 1501 is used to receive the information notified by the user device, of which the information is on the network side. Includes relevant information for determining cell types of first and second base stations in the event of handover initialization or link failure; and also includes third notification unit 1502, which includes third notification unit 1502. , The information is used to notify the second base station or the first base station.

In this embodiment, the apparatus corresponds to another base station side (third base station), and the specific working method is the same as in Examples 5 to 8, so the description thereof will be omitted here.

The above-mentioned Examples 13 to 15 have been described as an example in which the source base station obtains the cell types of the local cell and the target cell, and hereinafter, the source base station obtains the absolute time of the handover failure as an example. It will be explained as.

FIG. 16 is a block diagram of the information acquisition device according to the 16th embodiment of the present invention. As shown in FIG. 16, apparatus 1600 includes a first receiving unit 1601 and a first computing unit 1602; of which the first receiving unit 1601 is used to receive information transmitted by the user equipment. The information includes relevant information for determining the cell types of the first base station and the second base station on the network side in the event of handover initialization or link failure; the first calculation unit 1602 is the same. Based on the relevant information, it is used to calculate the absolute time when a handover initialization or link failure of the user equipment occurs.

As can be seen from the above embodiment, when the device 1600 is on the source base station side of the network and the handover occurs too fast, the device 1600 can receive the relevant information transmitted by the UE, and said Based on the relevant information, the absolute time when a handover initialization or link failure occurs can be calculated.

Example 17 of the present invention further provides an information acquisition device. The device includes a first receiving unit, which is used to receive information transmitted by a second or third base station, of which the information is initially handed over by the user device. Includes the absolute time when the conversion or link failure occurred.

In this case, the device can receive the absolute time directly from the second or third base station, there is no need to calculate the absolute time, the handover is too slow, and the wrong cell. It corresponds to the handover to the above, and is the same as in Examples 9 to 10.

FIG. 17 is a configuration diagram of the information acquisition device according to the 18th embodiment of the present invention. As shown in FIG. 17, apparatus 1700 includes a second receiving unit 1701, which is used to receive information notified by a first or third base station, of which the information is a user apparatus. Including the absolute time when the handover initialization or link failure occurred in;
In this embodiment, the apparatus 1700 can all obtain the determination time from the first base station and the third base station when the handover is too fast or the handover occurs in the wrong cell. You can, and you don't have to calculate it yourself.

In the present embodiment, when the handover failure is "handover to an erroneous cell", when the information notified by the third base station is received, the information may be further transmitted to the first base station. good.

Thus, as shown in FIG. 17, device 1700 may further include a first notification unit 1702, which is used to transmit the absolute time received to the first base station.

FIG. 18 is a configuration diagram of the information acquisition device according to the nineteenth embodiment of the present invention. As shown in FIG. 18, apparatus 1800 includes a second receiving unit 1801, which is used to receive information notified by the user apparatus, of which the information is used on the network side for handover initialization or Includes relevant information for determining cell types of the first and second base stations when a link failure occurs;
In this embodiment, when the handover occurs too late, the apparatus 1800 acquires the relevant information from the user apparatus, calculates the absolute time based on the relevant information, and calculates the absolute time. The first base station can be notified.

In such cases, as shown in FIG. 18, apparatus 1800 may further include a second calculation unit 1802 and a second notification unit 1803; of which the second calculation unit 1802 is based on the relevant information. It is used to calculate the absolute time that handover initialization or link failure has occurred in the user equipment; the second notification unit 1803 is used to notify the first base station of the absolute time.

When a handover occurs to an erroneous cell, after acquiring the related information from the UE, the absolute time can be calculated using the related information, and then the absolute time can be transmitted to the first base station.

FIG. 19 is a configuration diagram of the information acquisition device according to the 20th embodiment of the present invention. As shown in FIG. 19, apparatus 1900 includes a third receiving unit 1901, a third computing unit 1902, and a fourth notification unit 1903.

The third receiving unit 1901 is for receiving the information notified by the user apparatus, and the information is the first base station and the first base station and the first base station when a handover initialization or a link failure occurs on the network side. 2 Contains relevant information to determine the cell type of the base station.

The third calculation unit 1902 is used to calculate the absolute time when the handover initialization or the other link failure occurs in the user apparatus based on the related information.

The fourth notification unit 1903 is used to notify the second base station or the first base station of the absolute time.

In this embodiment, when a handover occurs to an erroneous cell, after receiving the related information from the UE, the absolute time can be calculated using the related information, and then the absolute time is used as the first base. It can be transmitted to a station or a second base station.

Example 20 of the present invention further provides an information acquisition device. The device includes the following units:

Information transmission unit: To determine the cell types of the first base station and the second base station to the network side when the handover initialization or the link failure occurs, and to the network side when the handover initialization or the link failure occurs. It is used to transmit the related information of the above, or information including the absolute time when the handover initialization or the link failure occurs in the user apparatus.

Since the specific process is the same as that of Examples 5 to 11, the description thereof will be omitted here.

FIG. 20 is a configuration diagram of the parameter optimization device according to the 22nd embodiment of the present invention. As shown in FIG. 20, apparatus 2000 includes the following units.

First transmission unit 2001: When it is detected that it is necessary to modify the parameters of the handover with the adjacent cell, the cell types of the source cell and the target cell are included, or the handover failure frequently occurs. It is used to notify the base station where the cell requiring parameter correction is located, with information including the absolute period shown.

In this embodiment, the apparatus 2000 further includes a fourth receiving unit 2002, and the fourth receiving unit 2002 is a response message returned by the base station in which the cell requiring parameter correction is located, indicating that the parameters of the handover can be corrected. The device 2000 also includes a parameter correction unit 2003, which is used to correct the parameters of the handover.

FIG. 21 is a configuration diagram of the parameter optimization device according to the 23rd embodiment of the present invention. As shown in FIG. 21, device 2100 includes the following units:

Fifth Receiving Unit 2101: Used to receive information transmitted by the base station that calibrates the parameters, including the cell types of the source and target cells, or the absolute period indicating the frequent occurrence of handover failures;
Confirmation unit 2102: Used to evaluate whether to receive modifications to the handover parameters based on the information;
Second transmission unit 2103: Used to send the corresponding response message to the base station that calibrates the handover parameters when the evaluation result of the confirmation unit 2102 is "received corrections to the handover parameters". ..

In the above-described embodiment, the parts of the information acquisition device and the parameter optimization device of Examples 13 to 20 and 22 to 23 can be used in any combination.

Example 24 of the present invention provides a user apparatus including the apparatus according to Example 21.

Example 25 of the present invention provides a base station, which may include any device or combination of parts of any of the devices of Examples 13-20, 22-23, as described in Examples above. Therefore, the description thereof will be omitted here.

Example 26 of the present invention further provides a network system, which includes the user apparatus described in Example 21 and the base station of Example 25.

Since the specific working flow is the same as that of Examples 5 to 12, the description thereof will be omitted here.

An embodiment of the present invention further provides a computer-readable program, of which, when the program is executed in the information acquisition device or base station, the program is sent to the computer in the information acquisition device or base station. Execute the information acquisition method described in ~ 11.

An embodiment of the present invention further provides a storage medium for storing a computer-readable program, in which the computer-readable program provides a computer with the information acquisition method according to Examples 5 to 11 in an information acquisition device or a base station. Let it run.

An embodiment of the present invention further provides a computer-readable program, wherein when the program is executed in the information acquisition device or the user device, the program is sent to the computer in the information acquisition device or the user device. Execute the information acquisition method described in ~ 11.

An embodiment of the present invention further provides a storage medium for storing a computer-readable program, in which the computer-readable program provides a computer with the information acquisition method according to Examples 5 to 11 in an information acquisition device or a user device. Let it run.

An embodiment of the present invention further provides a computer-readable program, of which, when the program is executed in a parameter-optimizing device or base station, the program is sent to the computer in the information acquisition device or base station. Execute the parameter optimization method described in 12.

An embodiment of the present invention further provides a storage medium in which a computer-readable program is stored, in which the computer-readable program executes the parameter optimization method described in Example 12 in an information acquisition device or a base station on a computer. Let me.

An embodiment of the present invention further provides a computer-readable program, wherein when the program is executed in the information acquisition device or the user device, the program is sent to the computer in the information configuration device or the base station. Execute the parameter configuration method of ~ 2.

An embodiment of the present invention further provides a storage medium in which a computer-readable program is stored, and the computer-readable program causes a computer to execute the parameter configuration method of Examples 1 and 2 in an information configuration device or a base station. ..

The above-mentioned devices and methods of the present invention may be realized by hardware, or may be realized by a combination of hardware and software. The present invention also relates to such a computer-readable program, i.e., when the program is executed by a logic component, the logic component can realize the above-mentioned device or component, or the logic component. In addition, the various methods or steps described above can be realized. The present invention also relates to a recording medium that stores the above program, and the recording medium may be, for example, a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and any modification to the present invention belongs to the technical scope of the present invention unless the gist of the present invention is deviated.

[Summary of Examples]
(Appendix 1)
It ’s an information acquisition method.
The first base station includes receiving the information transmitted by the user equipment or the second base station or the third base station.
The information includes related information for determining the cell types of the first base station and the second base station at the time of handover initialization or link failure on the network side, or the information is the user. A method that includes absolute time in the event of a handover initialization or link failure in the device.
(Appendix 2)
The method described in Appendix 1
Upon receiving the relevant information, the method further
A method comprising the first base station determining the cell types of the first base station and the second base station at the time of handover initialization or link failure based on the relevant information.
(Appendix 3)
The method described in Appendix 1
Upon receiving the relevant information, the method further
A method comprising calculating the absolute time when a handover initialization or link failure occurs in the user apparatus based on the relevant information.
(Appendix 4)
The method described in Appendix 2, and further
A method comprising detecting whether it is necessary to modify the parameters of a handover with an adjacent cell based on the cell type or the information including the absolute time obtained within a predetermined time.
(Appendix 5)
It ’s an information acquisition method.
The second base station includes receiving the information notified by the user device or the first base station or the third base station.
The information includes related information for determining the cell types of the first base station and the second base station at the time of handover initialization or link failure on the network side, or the information is the user. A method that includes absolute time at the time of handover initialization or link failure in the device, or time-related information.
(Appendix 6)
The method described in Appendix 5
When the second base station receives the information notified by the user apparatus or the third base station, the method further comprises.
A method comprising notifying the first base station of the information.
(Appendix 7)
The method described in Appendix 5
When receiving the time-related information notified by the user equipment or the third base station, the method further comprises.
A method comprising calculating the absolute time at the time of a handover initialization or link failure in the user apparatus based on the information; and transmitting the absolute time to the first base station.
(Appendix 8)
It ’s an information acquisition method.
The third base station receives the information notified by the user apparatus, and the information is used on the network side to determine the cell types of the first base station and the second base station when a handover initialization or a link failure occurs. A method comprising including relevant information for determination, or including time-related information; and including notifying the second or first base station of the information.
(Appendix 9)
The method described in Appendix 8, further
Based on the time-related information, the absolute time at the time of handover initialization or link failure in the user equipment is calculated; and the absolute time is notified to the second base station or the first base station. The method, including that.
(Appendix 10)
The method according to any one of Supplementary notes 1 to 9.
The related information is time-related information, and the time-related information includes the first time from the start of the handover to the occurrence of the connection failure in the user device, or the first time. A method including a second time from the occurrence of a connection failure to the transmission of the information.
(Appendix 11)
The method according to any one of Supplementary notes 1 to 9.
The first base station is a base station where the user equipment is located when a handover failure occurs, or is a base station where the user equipment successfully reestablishes or newly establishes a connection when a handover failure occurs. Yes;
The second base station is a base station that provides a service to the user device before the link failure that occurs when the handover fails, or the second base station is connected to the user device after the handover failure occurs. A base station that has successfully reestablished or reestablished a new method.
(Appendix 12)
It is a parameter optimization method
When the base station that calibrates the parameters detects that it is necessary to correct the parameters of the handover with the adjacent cell, it includes the cell types of the source cell and the target cell, or frequently causes the handover failure. A method of notifying the base station where the cell whose parameters need to be modified is located, with information including the absolute period shown.
(Appendix 13)
The method described in Appendix 12, further
Receive a response message returned by the base station where the cell in which the parameter needs to be modified indicates that the handover parameter can be modified; and modify the handover parameter based on the response message. Including methods.
(Appendix 14)
It is a parameter optimization method
Receives information sent by the base station that calibrates the parameters, including the cell types of the source and target cells, or the absolute period indicating the frequent occurrence of handover failures;
Based on the information, evaluate whether to modify the handover parameter; and when the evaluation result is "correct the handover parameter", the base station that calibrates the handover parameter is supported. A method that involves sending a response message.
(Appendix 15)
It is an information acquisition device
Includes a first receiving unit for receiving information transmitted by a user device or a second or third base station.
The information includes related information for determining the cell type of the first base station or the second base station when a handover initialization or a link failure occurs on the network side, or the information includes the user. A device that includes information related to the absolute time or time at the time of handover initialization or link failure in the device. (Appendix 16)
The device according to Appendix 15, further
An apparatus including a typology determination unit for determining cell types of the first base station and the second base station when a handover initialization or a link failure occurs based on the related information.
(Appendix 17)
The device according to Appendix 15.
Upon receiving the relevant information, the device further includes a first computing unit.
The first calculation unit is a device used to calculate an absolute time when a handover initialization or a link failure occurs in the user device based on the information related to the time.
(Appendix 18)
The device according to Appendix 16, further
An apparatus including a detection unit for detecting whether to modify a parameter of a handover with an adjacent cell based on the cell type or information including the absolute time obtained within a predetermined time.
(Appendix 19)
It is an information acquisition device
Includes a second receiving unit for receiving information notified by a user device or a first or third base station.
The information includes related information for determining the cell types of the first base station and the second base station at the time of handover initialization or link failure on the network side, or the information is the user. A device that includes information related to the absolute time or time at the time of handover initialization or link failure in the device.
(Appendix 20)
The device according to Appendix 19.
Upon receiving the information notified by the user device or the third base station, the device further
A device including a first notification unit for notifying the first base station of the information.
(Appendix 21)
The device according to Appendix 19.
Upon receiving the relevant information notified by the user device or the third base station, the device further
A second calculation unit for calculating the absolute time at the time of handover initialization or link failure in the user device based on the time-related information; and notifying the first base station of the absolute time. A device that includes a second notification unit for.
(Appendix 22)
It is an information acquisition device
It is a third receiving unit for receiving the information notified by the user device, and the information is the cell type of the first base station and the second base station when the handover initialization or the link failure occurs on the network side. A third receiving unit that includes relevant information for determining, or that includes time-related information; and a third notification unit for notifying the second or first base station of the relevant information. Including, equipment.
(Appendix 23)
The device according to Appendix 22, further
A third calculation unit for calculating the absolute time at the time of handover initialization or link failure in the user apparatus based on the time-related information; and the absolute time being the second base station or the second base station or the second. A device that includes a fourth notification unit for notifying one base station.
(Appendix 24) This is a parameter optimization device.
When it is detected that it is necessary to modify the parameters of the handover with the adjacent cell, the information including the cell types of the source cell and the target cell, or the absolute period indicating the frequent occurrence of the handover failure, is provided. A device that includes a first transmit unit to notify the base station where the cell where the parameter needs to be modified is located.
(Appendix 25)
The device according to Appendix 24, further
The fourth receiving unit for receiving the response message returned by the adjacent base station indicating that the parameters of the handover can be modified; and the parameter modification for modifying the parameters of the handover based on the response message. A device that includes a unit.
(Appendix 26)
It is a parameter optimizer
A fifth receiving unit for receiving information transmitted by a base station that calibrates parameters, including cell types of source cells and target cells, or an absolute period indicating the frequent occurrence of handover failures;
A confirmation unit for evaluating whether or not to modify the handover parameter based on the information; and when the evaluation result of the confirmation unit is "correct the handover parameter", the handover parameter A device that includes a second transmission unit for transmitting the corresponding response message to the base station that calibrates.
(Appendix 27)
It is a parameter configuration method
A method in which a base station or network-side entity determines cell coverage based on a parameter range of one or more sets of parameter collections in which it is placed.
(Appendix 28)
The method described in Appendix 27, further
A method comprising constructing a cell type corresponding to the cell coverage.
(Appendix 29)
The method described in Appendix 27, further
A method comprising the network-side entity notifying a base station of the configured cell type.
(Appendix 30)
The method described in Appendix 29, further
A method comprising notifying an adjacent base station on the network side of the changed cell type information when a change in cell coverage occurs.
(Appendix 31)
It is a parameter configuration device
A device that includes a first parameter configuration unit for determining cell coverage based on the parameter range of one or more sets of parameter collections.
(Appendix 32)
The device according to Appendix 31, further
A device comprising a second parameter configuration unit for configuring a cell type corresponding to the cell coverage.
(Appendix 33)
The device according to Appendix 32, further
An apparatus including a first notification unit for notifying a base station of the configured cell type.
(Appendix 34)
The device according to Appendix 31, further
A device including a second notification unit for notifying an adjacent base station on the network side of the changed cell type information when a change in cell coverage occurs.
(Appendix 35)
It ’s a base station,
A base station comprising the device according to any one of Appendix 15, 19, 22, 24, 26, and 31.
(Appendix 36)
It's a network system
A network system including the base station described in Appendix 35.
(Appendix 37)
It ’s a computer-readable program,
When executing the program in the information acquisition device or the base station, the program causes the computer to execute the information acquisition method according to any one of Supplementary notes 1 to 11 in the information acquisition device or the base station. Of the program.
(Appendix 38)
A storage medium that stores computer-readable programs
The computer-readable program is a storage medium that causes a computer to execute the information acquisition method according to any one of Supplementary notes 1 to 11 in an information acquisition device or a base station.
(Appendix 39)
It ’s a computer-readable program,
When the program is executed in the parameter optimization device or the base station, the program executes the parameter optimization method according to any one of Appendix 12 to 14 in the information acquisition device or the base station. A program to make you.
(Appendix 40)
A storage medium that stores computer-readable programs
The computer-readable program is a storage medium that causes a computer to execute the parameter optimization method according to any one of Appendix 12 to 14 in an information acquisition device or a base station.
(Appendix 41)
It ’s a computer-readable program,
When executing the program in the information acquisition device or the user device, the program causes the computer to execute the parameter configuration method according to any one of the appendices 27 to 29 in the information configuration device or the base station. Of the program.
(Appendix 42)
A storage medium that stores computer-readable programs
The computer-readable program is a storage medium that causes a computer to execute the parameter configuration method according to any one of Supplementary notes 27 to 29 in an information configuration device or a base station.

Claims (3)

A parameter setting apparatus included in the base station of the configured radio communication system the base station and the terminal,
The hand detecting a change in the parameters of the over, the control information including information on cell coverage of a handover original cell and the handover destination cell between the cell and the adjacent cell of the base station including the parameter setting unit, wherein includes a first transmission unit for notifying the other different base stations and the base station changes the parameters to configure the required cell,
The other base station receives the control information notified from the base station and changes the parameters of the handover .
A parameter setting device characterized in that . The parameter setting device according to claim 1, further
Including parameter setting unit for changing the parameters of and the handover; first reception unit that receives a notification indicating a change of parameters of the handover from the other base station
A parameter setting device characterized in that . A parameter setting apparatus included in the base station of the configured radio communication system the base station and the terminal,
Notified from the base station to change the parameters of the handover, a second receiving unit for receiving control information including information about the cell coverage of the handover original cell and the handover destination cell,
A determination unit for determining whether to change the parameters of the handover,
To the base station, including a second transmission unit for notifying whether or not to change the parameters,
A parameter setting device characterized in that .

Images