CN103379574A - Switching control method, device and system - Google Patents

Abstract

Embodiments of the present invention provide a handover control method, device, and system, which relate to the field of communication technology. The method includes: determining a plurality of candidate user equipment UEs; sending a handover measurement indication message to the plurality of candidate UEs; receiving the multiple The respective measurement results reported by candidate UEs, the measurement results include: one or more candidate neighboring cells and respective signal measurement values of the candidate neighboring cells; according to the signal measurement values of the candidate neighboring cells from the multiple Determine a plurality of target UEs from candidate UEs, and determine the target neighboring cells to which the multiple target UEs are respectively handed over from the candidate neighboring cells corresponding to the multiple target UEs, and the respective handovers to which the multiple target UEs are handed over to The target neighbors are different from each other. The embodiment of the present invention can effectively reduce the congestion degree of the cell and improve the success rate of handover.

Description

Handover control method, device and system

technical field

The present invention relates to the technical field of communication, and in particular to a switching control method, device and system.

Background technique

UMTS (Universal Mobile Telecom System) wireless communication system is widely deployed all over the world. In order to provide faster and larger information transmission, service providers in the telecommunications industry are developing existing networks. For example, the UMTS system is further developed into a so-called evolved UMTS terrestrial radio access network, also called an LTE wireless communication system or a 3.9G system. The system upgrades older technologies by improving efficiency, reducing costs, developing services, taking advantage of new spectrum opportunities, and better integrating with other standards.

In LTE, the architecture of the wireless network system has evolved from supporting both circuit switching and packet switching to a pure IP and pure packet switching system. The architecture of the entire eUTRAN (evolved UMTS Terrestrial Radio Access Network) and its core network have become simpler, and the two are combined to form EPS (Evolved Packet System), also known as SAE (System Architecture Evolution).

In the current LTE, the basic architecture includes a radio access network (eUTRAN), which acts as a base station to connect multiple UEs (User Equipment, user equipment) and multiple access nodes, while interacting with the core network. In eUTRAN, the access node is called eNode B or eNB. In eUTRAN, eNB is the only node type, which simplifies the architecture compared with the previous wireless communication network. In LTE, the core network to which the eNB is connected is called EPC (Evolved Packet Core).

In the EPS composed of eUTRAN and EPC, there are some operational constraints, including physical constraints, such as equipment constraints, frequency allocation, power constraints, base station placement, antenna configuration, noise, environmental factors, etc. In addition, these operational limitations may also originate from unreasonable system configuration. Mobile communication infrastructure equipment providers will provide Radio Resource Management (RRM, Radio Resource Management) features in the supplied equipment. This wireless management feature can adjust and alleviate the congestion problem caused by the excessive amount of data, signaling, and users in the EPS. The congestion in the EPS includes two aspects: one is the congestion of the eUTRAN radio access network, and the other is the congestion of the EPC core network. In the radio access network part, because too many users and services in the same cell are connected to the same eNB, they compete to occupy the limited resources owned by the eNodeB, resulting in a shortage of PRBs (Physical Resource Blocks) in the cell. Guarantee the QoS (Quality of Service) of the business.

In the prior art, in order to avoid congestion in the cell, a commonly used method is: the base station in the source cell judges whether the power of the signal sent by the UE to the base station in the source cell is lower than a certain threshold value, if the signal power sent by the UE to the source cell If the signal power of the base station is lower than a certain threshold value, the UE will be handed over to the target cell, so as to reduce the load of the source cell and further reduce the congestion degree of the source cell. However, with this method, if the power of the signal sent by the UE to the base station in the source cell is not lower than the threshold value, even if the source cell is in a congested state, the UE cannot be handed over to the target cell, so that the source cell cannot be reduced. The load cannot reduce the congestion level of the source cell.

Another commonly used method is: load information is exchanged between base stations, and a UE is selected for handover through load balancing. However, this method requires a load information exchange interface between base stations, and this method is not suitable for systems that lack an interface for load information exchange between base stations. If this method is still used, the source cell may handover multiple UEs to the same neighboring cell during the handover process, resulting in a sudden increase in the load of the neighboring cell, causing some UEs to fail handover, and the handover success rate is low , and thus cannot effectively reduce the congestion level of the source cell.

Contents of the invention

Embodiments of the present invention provide a handover control method, device and system, which can effectively reduce the congestion degree of a cell and improve the success rate of handover.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

A switching control method, comprising:

determining a plurality of candidate user equipment UE;

Sending a handover measurement instruction message to the plurality of candidate UEs to trigger the plurality of candidate UEs to perform signal measurement on neighboring cells and report the measurement results;

receiving respective measurement results reported by the plurality of candidate UEs, where the measurement results include: one or more candidate neighboring cells and respective signal measurement values of the candidate neighboring cells;

Determining a plurality of target UEs from the multiple candidate UEs according to the signal measurement values of the candidate neighboring cells, and determining from the respective candidate neighboring cells corresponding to the multiple target UEs to which the multiple target UEs are handed over to. Target neighboring cells, the target neighboring cells to which the multiple target UEs are handed over to are different from each other.

A switch control device, comprising:

A determining module, configured to determine multiple candidate user equipment UEs;

A sending module, configured to send a handover measurement instruction message to the plurality of candidate UEs, so as to trigger the plurality of candidate UEs to perform signal measurement on neighboring cells and report the measurement results;

A receiving module, configured to receive respective measurement results reported by the plurality of candidate UEs, where the measurement results include: one or more candidate neighboring cells and respective signal measurement values of the candidate neighboring cells;

A handover control module, configured to determine a plurality of target UEs from the plurality of candidate UEs according to signal measurement values of the candidate neighboring cells, and determine the plurality of target UEs from the corresponding candidate neighboring cells of the plurality of target UEs. Target neighboring cells to which the target UEs are handed over respectively, and the target neighboring cells to which the multiple target UEs are handed over to are different from each other.

A handover control system includes the above-mentioned handover control apparatus and multiple user equipment UEs.

In the embodiment of the present invention described by the above technical solution, when the base station of the local cell performs cell handover control on the UEs in the local cell, the base station of the local cell selects the signal measurement value of the candidate neighboring cell reported by the candidate UE from the multiple Determining a plurality of target UEs from the candidate UEs, and determining target neighboring cells to which the multiple target UEs are respectively handed over from the candidate neighboring cells corresponding to the multiple target UEs, and the target neighbor cells to which the multiple target UEs are respectively handed over Neighbors are different from each other. Since the base station of this cell selects different target neighbor cells for multiple target UEs to switch to, it avoids the sudden increase of the load of the neighbor cell caused by handover of UEs in this cell to the same neighbor cell in the prior art , resulting in the handover failure of some UEs, which cannot effectively reduce the congestion level of the cell.

Compared with the prior art, the technical solution provided by the present invention can effectively reduce the congestion degree of the cell and improve the success rate of handover when the cell is in a congested state; Handover control is performed to prevent cells from entering a congested state.

Moreover, the technical solution provided by the present invention does not require load information exchange interfaces between base stations, so it is also applicable to communication systems lacking load information exchange interfaces between base stations, for example, communication systems based on X2 interface information exchange.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a flowchart of a handover control method provided by Embodiment 1 of the present invention;

FIG. 2 is a flow chart of implementing step 101 in a handover control method provided by Embodiment 1 of the present invention;

FIG. 3 is a flow chart of implementing step 104 in a handover control method provided by Embodiment 1 of the present invention;

FIG. 4 is a flowchart of another handover control method provided by Embodiment 1 of the present invention;

FIG. 5 is a structural diagram of a switching control device provided by Embodiment 2 of the present invention;

FIG. 6 is a structural diagram of a determination module 11 in a handover control device provided by Embodiment 2 of the present invention;

FIG. 7 is a structural diagram of a switching control module 14 in a switching control device provided by Embodiment 2 of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Example 1:

An embodiment of the present invention provides a handover control method. As shown in FIG. 1 , the execution subject of the method is a base station in a cell, and the base station includes but is not limited to an eNode B or eNB in an LTE system, and a Node B in a CDMA system. The method includes:

101. Determine multiple candidate user equipment UEs.

For example, the base station of the current cell determines multiple candidate UEs from the UEs in the current cell.

102. Send a handover measurement instruction message to the multiple candidate UEs, so as to trigger the multiple candidate UEs to perform signal measurement on neighboring cells and report the measurement results.

103. Receive respective measurement results reported by the plurality of candidate UEs, where the measurement results include: one or more candidate neighboring cells and respective signal measurement values of the candidate neighboring cells.

It should be noted that, in order to reduce the handover delay, in step 102, the base station of the local cell may set a timer while sending the handover measurement indication message. When the time set by the timer is reached and the base station of the cell has not received the measurement result of a candidate UE, it is considered that there is no suitable candidate cell around the candidate UE.

104. Determine multiple target UEs from the multiple candidate UEs according to the signal measurement values of the candidate neighboring cells, and determine that each of the multiple target UEs is handed over from the candidate neighboring cells corresponding to the multiple target UEs. The target neighboring cells to which the multiple target UEs are handed over to are different from each other.

In the embodiment of the present invention described by the above technical solution, when the base station of the local cell performs cell handover control on the UEs in the local cell, the base station of the local cell selects the signal measurement value of the candidate neighboring cell reported by the candidate UE from the multiple Determining a plurality of target UEs from the candidate UEs, and determining target neighboring cells to which the multiple target UEs are respectively handed over from the candidate neighboring cells corresponding to the multiple target UEs, and the target neighbor cells to which the multiple target UEs are respectively handed over Neighbors are different from each other. Since the base station of this cell selects different target neighbor cells for multiple target UEs to switch to, it avoids the sudden increase of the load of the neighbor cell caused by handover of UEs in this cell to the same neighbor cell in the prior art , resulting in the handover failure of some UEs, which cannot effectively reduce the congestion level of the cell.

Compared with the prior art, the technical solution provided by the present invention can effectively reduce the congestion degree of the cell and improve the success rate of handover when the cell is in a congested state; Handover control is performed to prevent cells from entering a congested state.

Moreover, the technical solution provided by the present invention does not require load information exchange interfaces between base stations, so it is also applicable to communication systems lacking load information exchange interfaces between base stations, for example, communication systems based on X2 interface information exchange.

It should be noted that the solution provided by the embodiment of the present invention may be applicable to but not limited to the LTE system, and the above method will be described in detail below taking the LTE system as an example.

Further, as shown in FIG. 2, in the above step 101, determining a plurality of candidate user equipment UEs may be implemented in the following manner:

101-1. Receive a signal measurement value sent by each UE, the signal measurement value is a signal measurement value obtained after the UE performs signal measurement on the local cell, and the smaller the signal measurement value is, it is used to indicate that the UE and the local cell The farther the distance between the base stations of the cell;

Optionally, in the LTE system, the signal measurement value is the RSRP measurement value obtained after the UE performs RSRP (LTE Reference Signal Received Power, reference signal received power) measurement on the current cell. The RSRP measurement value is the linear average value of the signal power obtained by the UE after measuring the RS (Reference Signal, reference signal) of several REs (Resource Elements) from the base station.

When the UE is closer to the base station of the cell, the RSRP measurement value of the cell measured by the UE is larger. Conversely, when the UE is farther away from the base station of the cell, the RSRP measurement value of the cell measured by the UE is larger. Small. Therefore, by comparing the magnitude of the RSRP measurement value, the distance between the UE and the cell can be known.

101-2. Determine UEs corresponding to all signal measurement values smaller than a preset threshold value as candidate UEs.

Wherein, UEs corresponding to all signal measurement values smaller than the preset threshold refer to UEs located at the edge of the cell. Since the success rate of handover to other neighboring cells is high when the UE is located at the edge of the cell, this paper selects the UE located at the edge of the cell as the candidate UE, which can improve the success rate of handover.

Specifically, UEs corresponding to all RSRP measurement values smaller than a preset threshold may be arranged in ascending order of RSRP measurement values, and stored in a handover list. Afterwards, in step 102, the base station of the current cell may choose to send a handover measurement indication message to all candidate UEs stored in the handover list.

Further, in the above step 102, the handover measurement instruction message sent by the base station of the current cell to the plurality of candidate UEs may be sent through RRCConnectionReconfiguration signaling. After the UE performs RSRP measurement on a neighboring cell, it may report the measurement result in a periodic reporting manner or an event reporting manner. Preferably, when the cell is in a congested state, an event-type reporting method is generally selected. For the specific implementation of the periodical reporting manner or the event-type reporting manner, reference may be made to existing related technologies, which will not be repeated here.

Further, as shown in Figure 3, the above step 104 can be implemented in the following manner:

104-1. Select the top N candidate neighboring cells with the largest signal measurement values among the candidate neighboring cells corresponding to each candidate UE, as the neighboring cells to be handed over to each candidate UE, where N is a positive integer and T≥N≥2, so T is the minimum value among the total number of candidate neighboring cells corresponding to each candidate UE.

In order to better understand and describe the embodiment of the present invention, a case where N is 2 is taken as an example for description below.

For example, in step 103, the base station of the cell receives the respective measurement results reported by the candidate UE1, UE2...UE10.

As shown in Table 1 below, the first two candidate neighboring cells with the largest signal measurement values among the candidate neighboring cells corresponding to candidate UE1, UE2...UE10 are selected as neighboring cells to be handed over for each candidate UE. Wherein, UE1's neighbor cells to be handed over are Cell1 and Cell2, UE2's neighbor cells to be handed over are Cell2 and Cell3, and so on.

Table 1

104-2. Calculate the number of candidate UEs corresponding to each neighboring cell to be handed over.

Optionally, for the neighbor cells to be handed over corresponding to each candidate UE shown in Table 1 above, the above Table 1 may be converted into candidate UEs corresponding to each neighbor cell to be handed over, and the conversion result is shown in Table 2 below.

Table 2

Neighborhood to be switched Corresponding Candidate UE Cell1 UE1, UE3, UE7 Cell2 UE1, UE2, UE4, UE8 Cell3 UE2, UE3, UE7, UE10 Cell4 UE4, UE6, UE8, UE9 Cell5 UE5, UE9

Cell6 UE5, UE6, UE10

104-3. According to the difference in the number of candidate UEs corresponding to each neighboring cell to be handed over and the RSRP values of the two neighboring cells to be handed over corresponding to each candidate UE, it can be specifically divided into the following situations for processing:

(1) When there are two candidate UEs corresponding to the adjacent cells to be handed over that are the same and the number is 1, determine the candidate UE as the target UE, and select the signal measurement value in the two adjacent cells to be switched to be larger The neighboring cell of is used as the target neighboring cell to which the target UE is handed over.

(2) When the number of candidate UEs corresponding to a certain neighboring cell to be handed over is 1, determine the candidate UE as the target UE, and determine the neighboring cell to be switched as the target neighboring cell to which the target UE is handed over .

(3) When the number of candidate UEs corresponding to each neighboring cell to be handed over is greater than 1, determine the neighboring cell to be handed over with the least number of corresponding candidate UEs as the target neighboring cell, and select the corresponding candidate UE from the target neighboring cell Randomly select a candidate UE as the target UE.

For example, in the above Table 2, if the number of candidate UEs corresponding to Cell5 is the least, a candidate UE is randomly selected from the candidate UEs corresponding to Cell5, for example, UE5 is selected. Afterwards, if the number of candidate UEs corresponding to Cell1 and Cell6 is the same, the target UE is randomly selected from the candidate UEs corresponding to Cell1 or Cell6, for example, UE1 is selected from the candidate UEs corresponding to Cell1. The results are shown in Table 3 below. Wherein, the candidate UE determined as the target UE this time is marked with a tick, so as to be distinguished from the candidate UE.

table 3

Neighborhood to be switched Corresponding Candidate UE The determined target UE and the corresponding target cell Cell1 UE1√, UE3, UE7 UE1->Cell1 Cell2 UE1, UE2, UE4, UE8 Cell3 UE2, UE3, UE7, UE10 Cell4 UE4, UE6, UE8, UE9 Cell5 UE5√, UE9 UE5->Cell5 Cell6 UE5, UE6, UE10

On the basis of the above Table 3, similar processing was performed again, and the following Table 4 was obtained. Wherein, the candidate UE determined as the target UE this time is marked with "√", and the candidate UE determined as the target UE previously is marked with "×", so as to distinguish it from the candidate UE.

Table 4

Neighborhood to be switched Corresponding Candidate UE The determined target UE and the corresponding target cell Cell1 UE1×, UE3, UE7 UE1->Cell1 Cell2 UE1×, UE2√, UE4, UE8 UE2->Cell2 Cell3 UE2, UE3, UE7, UE10 Cell4 UE4, UE6, UE8, UE9 Cell5 UE5×, UE9 UE5->Cell5 Cell6 UE5×, UE6√, UE10 UE6->Cell6

(4) When the number of candidate UEs corresponding to each neighboring cell to be handed over is greater than 1 and the number is the same, select a neighboring cell to be switched with a larger signal measurement value corresponding to a candidate UE as the target neighboring cell of the candidate UE .

For example, in the above Table 4, the neighboring cells to be handed over are Cell3 and Cell4, and the number of candidate UEs corresponding to Cell3 and Cell4 is 3. According to Table 1, the RSRP measurement of Cell4 in the candidate neighboring cell corresponding to candidate UE4 The value is larger, so the target neighbor cell to which UE4 is handed over is selected as Cell4. The final results are shown in Table 5 below.

table 5

Neighborhood to be switched Corresponding Candidate UE The determined target UE and the corresponding target cell Cell1 UE1×, UE3, UE7 UE1->Cell1 Cell2 UE1×, UE2×, UE4, UE8 UE2->Cell2 Cell3 UE2×, UE3√, UE7, UE10 UE3->Cell3 Cell4 UE4√, UE6×, UE8, UE9 UE4->Cell4 Cell5 UE5×, UE9 UE5->Cell5 Cell6 UE5×, UE6×, UE10 UE6->Cell6

Further, as shown in Figure 4, the above method also includes:

105. Send a handover instruction message carrying the information of the corresponding target neighboring cell to each target UE, so as to instruct each target UE to switch to the corresponding target neighboring cell.

For example, as shown in Table 5 above, the base station of the cell sends a handover instruction message carrying Cell1 information to UE1 to instruct the UE1 to switch to Cell1; the base station of the cell sends a handover instruction message carrying Cell2 information to UE2, to instruct the UE2 to switch to Cell2...and so on.

It can be seen that since each UE switches to a different target neighboring cell, it has been verified again that the technical solution provided by the present invention avoids the sudden increase in the load of the neighboring cell caused by handing over the UE in this cell to the same neighboring cell in the prior art , resulting in handover failure of some UEs, which cannot effectively reduce the congestion level of the cell, which can effectively reduce the congestion level of the cell and improve the success rate of handover.

Example 2:

As shown in Figure 5, an embodiment of the present invention provides a handover control device, the device is specifically a base station in a cell, and the device includes:

A determining module 11, configured to determine a plurality of candidate user equipment UEs;

The sending module 12 is configured to send a handover measurement instruction message to the plurality of candidate UEs, so as to trigger the plurality of candidate UEs to perform signal measurement on neighboring cells and report the measurement results;

The receiving module 13 is configured to receive respective measurement results reported by the plurality of candidate UEs, wherein the measurement results include: one or more candidate neighboring cells and respective signal measurement values of the candidate neighboring cells;

A handover control module 14, configured to determine a plurality of target UEs from the multiple candidate UEs according to signal measurement values of the candidate neighboring cells, and determine the multiple target UEs from the candidate neighboring cells corresponding to the multiple target UEs. Target neighboring cells to which target UEs are handed over to respectively, and the target neighboring cells to which the multiple target UEs are handed over to are different from each other.

In the embodiment of the present invention, when the base station of the local cell performs cell handover control on UEs in the local cell, the base station of the local cell determines multiple target targets from the multiple candidate UEs according to the signal measurement values of the candidate neighboring cells reported by the candidate UEs. UE, and determine target neighboring cells to which the multiple target UEs are handed over from candidate neighboring cells respectively corresponding to the multiple target UEs, where the target neighboring cells to which the multiple target UEs are handed over to are different from each other. Since the base station of this cell selects different target neighbor cells for multiple target UEs to switch to, it avoids the sudden increase of the load of the neighbor cell caused by handover of UEs in this cell to the same neighbor cell in the prior art , resulting in the handover failure of some UEs, which cannot effectively reduce the congestion level of the cell.

Compared with the prior art, the technical solution provided by the present invention can effectively reduce the congestion degree of the cell and improve the success rate of handover when the cell is in a congested state; Handover control is performed to prevent cells from entering a congested state.

Moreover, the technical solution provided by the present invention does not require load information exchange interfaces between base stations, so it is also applicable to communication systems lacking load information exchange interfaces between base stations, for example, communication systems based on X2 interface information exchange.

Further, as shown in FIG. 6, the determination module 11 includes:

The receiving unit 11-1 is configured to receive a signal measurement value sent by each UE, and the signal measurement value is a signal measurement value obtained after the UE performs signal measurement on the cell;

The determining unit 11-2 is configured to determine UEs corresponding to all signal measurement values smaller than a preset threshold value as candidate UEs.

Further, as shown in FIG. 7, the switching control module 14 includes:

The selecting unit 14-1 is configured to select the top N candidate neighboring cells with the largest signal measurement value among the candidate neighboring cells corresponding to each candidate UE, as the neighboring cells to be handed over of each candidate UE, where N is a positive integer and T≥N ≥2, the T is the minimum value of the total number of candidate neighboring cells corresponding to each candidate UE;

A calculation unit 14-2, configured to calculate the number of candidate UEs corresponding to each neighboring cell to be handed over;

The determining unit 14-3 is configured to determine the candidate UE as the target UE when there are N candidate UEs corresponding to the neighboring cells to be switched are the same and the number is 1, and select one of the two neighboring cells to be switched The neighboring cell with a larger signal measurement value is used as the target neighboring cell to which the target UE is handed over;

The determining unit 14-3 is further configured to determine the candidate UE as a target UE when the number of candidate UEs corresponding to a certain neighboring cell to be switched is 1, and determine the neighboring cell to be switched as the target UE. The target neighbor cell to which the target UE is handed over;

The determining unit 14-3 is further configured to determine, when the number of candidate UEs corresponding to each neighboring cell to be handed over is greater than 1, the neighboring cell to be handed over corresponding to the smallest number of candidate UEs is determined as the target neighboring cell, and from the Randomly select a candidate UE from the candidate UEs corresponding to the target neighboring cell as the target UE;

The determining unit 14-3 is further configured to select a neighboring cell to be switched with a larger signal measurement value corresponding to a candidate UE when the number of candidate UEs corresponding to each neighboring cell to be handed over is greater than 1 and the number is the same. The target neighbor cell of the candidate UE.

Optionally, in the LTE system, the signal measurement value is a reference signal received power RSRP measurement value.

Further, the sending unit is further configured to send a handover indication message carrying information of a corresponding target neighboring cell to each target UE, so as to instruct each target UE to switch to the corresponding target neighboring cell.

For the specific implementation of each functional module or unit in the above device, refer to the relevant description in the corresponding steps of the method in Embodiment 1, and details are not repeated here.

Correspondingly, an embodiment of the present invention also provides a handover control system, including the above-mentioned handover control apparatus and multiple user equipments UE.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be realized by means of software plus necessary general-purpose hardware, and of course also by hardware, but in many cases the former is a better embodiment . Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, such as a floppy disk of a computer , a hard disk or an optical disk, etc., including several instructions for enabling a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments of the present invention.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (11)

1. a method for handover control is characterized in that, comprising:

Determine a plurality of candidate user devices UE;

Send the handover measurement Indication message to described a plurality of candidate UE, to trigger described a plurality of candidate UE signal measurement is carried out in the adjacent area, and the reporting measurement result;

Receive the measurement result separately that described a plurality of candidate UE reports, comprise in the described measurement result: one or more candidate adjacent and described candidate adjacent signal measurements separately;

Signal measurements according to described candidate adjacent is determined a plurality of object UE from described a plurality of candidate UE, and from each self-corresponding candidate adjacent of described a plurality of object UE, determine the target adjacent area that described a plurality of object UE switch to separately, the target adjacent area that described a plurality of object UE switch to separately is different.

2. method according to claim 1 is characterized in that, described definite a plurality of candidate UE comprise:

Receive the signal measurements that each UE sends, to be UE carry out the signal measurements that obtains behind the signal measurement to this residential quarter to described signal measurements, and described signal measurements is less, is used for representing that the distance between the base station of described UE and described this residential quarter is far away;

To be defined as candidate UE less than UE corresponding to all signal measurements of predetermined threshold value.

3. method according to claim 2, it is characterized in that, described signal measurements according to described candidate adjacent is determined a plurality of object UE from described a plurality of candidate UE, and determines that from each self-corresponding candidate adjacent of described a plurality of object UE the target adjacent area that described a plurality of object UE switch to separately comprises:

Choose the top n candidate adjacent of signal measurements maximum in candidate adjacent corresponding to each candidate UE, to be switched adjacent area as each candidate UE, described N is positive integer and T 〉=N 〉=2, and described T is the minimum value in the sum of each each self-corresponding candidate adjacent of candidate UE;

Calculate candidate UE number corresponding to each to be switched adjacent area;

When existing the identical and number of candidate UE corresponding to N to be switched adjacent area to be 1, described candidate UE is defined as object UE, and chooses the target adjacent area that signal measurements is larger in described two to be switched adjacent areas adjacent area switches to as described object UE;

When candidate UE number corresponding to certain to be switched adjacent area is 1, described candidate UE is defined as object UE, and described to be switched adjacent area is defined as the target adjacent area that described object UE switches to;

When a candidate UE number average corresponding to each to be switched adjacent area greater than 1 the time, the to be switched adjacent area that the candidate UE number of correspondence is minimum is defined as the target adjacent area, and chooses at random a candidate UE as object UE from candidate UE corresponding to described target adjacent area;

When a candidate UE number average corresponding to each to be switched adjacent area greater than 1 and number when identical, choose the larger to be switched adjacent area of signal measurements corresponding to certain candidate UE as the target adjacent area of described candidate UE.

4. each described method is characterized in that according to claim 1-3, and described signal measurements is Reference Signal Received Power RSRP measured value.

5. each described method is characterized in that according to claim 1-3, also comprises:

Send the switch indicating information that carries corresponding target neighboring BS information to described each object UE, switch to corresponding target adjacent area to indicate described each object UE.

6. a switching control is characterized in that, comprising:

Determination module is used for determining a plurality of candidate user devices UE;

Sending module is used for sending the handover measurement Indication message to described a plurality of candidate UE, to trigger described a plurality of candidate UE signal measurement is carried out in the adjacent area, and the reporting measurement result;

Receiver module is used for receiving the measurement result separately that described a plurality of candidate UE reports, and comprises in the described measurement result: one or more candidate adjacent and described candidate adjacent signal measurements separately;

The switching controls module, be used for determining a plurality of object UE according to the signal measurements of described candidate adjacent from described a plurality of candidate UE, and from each self-corresponding candidate adjacent of described a plurality of object UE, determine the target adjacent area that described a plurality of object UE switch to separately, the target adjacent area that described a plurality of object UE switch to separately is different.

7. device according to claim 6 is characterized in that, described determination module comprises:

Receiving element be used for to receive the signal measurements that each UE sends, and described signal measurements is that UE carries out the signal measurements that obtains behind the signal measurement to this residential quarter;

Determining unit is used for and will be defined as candidate UE less than UE corresponding to all signal measurements of predetermined threshold value.

8. device according to claim 6 is characterized in that, described switching controls module comprises:

Choose the unit, be used for choosing the top n candidate adjacent of candidate adjacent signal measurements maximum corresponding to each candidate UE, as the to be switched adjacent area of each candidate UE, described N is positive integer and T 〉=N 〉=2, and described T is the minimum value in the sum of each each self-corresponding candidate adjacent of candidate UE;

Computing unit is used for calculating candidate UE number corresponding to each to be switched adjacent area;

Determining unit, be used for when existing the identical and number of candidate UE corresponding to the individual to be switched adjacent area of N to be 1, described candidate UE is defined as object UE, and chooses the target adjacent area that signal measurements is larger in described two to be switched adjacent areas adjacent area switches to as described object UE;

Described determining unit also is used for described candidate UE being defined as object UE, and described to be switched adjacent area being defined as the target adjacent area that described object UE switches to when candidate UE number corresponding to certain to be switched adjacent area is 1;

Described determining unit, also be used for when a candidate UE number average corresponding to each to be switched adjacent area greater than 1 the time, the to be switched adjacent area that the candidate UE number of correspondence is minimum is defined as the target adjacent area, and chooses at random a candidate UE as object UE from candidate UE corresponding to described target adjacent area;

Described determining unit, also be used for when a candidate UE number average corresponding to each to be switched adjacent area greater than 1 and number when identical, choose the larger to be switched adjacent area of signal measurements corresponding to certain candidate UE as the target adjacent area of described candidate UE.

9. each described device is characterized in that according to claim 5-8, and described signal measurements is Reference Signal Received Power RSRP measured value.

10. each described device is characterized in that according to claim 5-8,

Described transmitting element also is used for sending the switch indicating information that carries corresponding target neighboring BS information to described each object UE, switches to corresponding target adjacent area to indicate described each object UE.

11. a handover control system is characterized in that, comprises each described switching control of the claims 6-10 and a plurality of user equipment (UE).

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