WO2017157010A1

WO2017157010A1 - Cell handover method and device, and radio network controller

Info

Publication number: WO2017157010A1
Application number: PCT/CN2016/102631
Authority: WO
Inventors: 詹建明; 梁昌裕; 张增杰; 刘涛; 霍燚
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-03-15
Filing date: 2016-10-19
Publication date: 2017-09-21
Also published as: CN107197485A

Abstract

A cell handover method and device, and a radio network controller. The method comprises: receiving measurement information of a current wireless network reported by a user terminal, the measurement information comprising demand information of adding a new macro cell wireless link; improving, according to the measurement information, a first target signal to noise ratio of a micro cell base station connected to the user terminal; and receiving a wireless link recovery instruction fed back by a macro cell base station after the user terminal establishes a wireless link connection to the macro cell base station.

Description

Cell switching method, device and radio network controller

Technical field

The present disclosure relates to the field of wireless communications, for example, to a cell handover method, apparatus, and radio network controller.

Background technique

With the rapid development of mobile broadband services, the data services of various 3rd Generation Partnership Project (3GPP)-based smart terminals have been spurred, resulting in data traffic in multiple hotspots and various mobile Internet-based The application (Application, APP) shows an explosive growth trend. Because it is difficult to solve the problem by enhancing the performance of the traditional macro cell, it is necessary to provide other network solutions based on the macro station network. It can be noted that a low-power radio remote module configured with the same frequency in the macro cell can be used to solve the rapidly increasing data traffic and various mobile Internet-based APP application requirements.

However, adding a low-power cell with the same frequency in the macro cell needs to solve the soft handover problem between cells, and the uplink coverage between the macro micro cells is caused by the difference in transmission power between the low-power cell and the macro cell and the difference in reception sensitivity. The downlink coverage is unbalanced, and the soft handover process is based on the strength of the downlink signal. Therefore, there may be a new wireless link added during the soft handover process because the uplink signal quality is poor, and the wireless link cannot be truly In use, there may be a problem that the wireless link is repeatedly reconstructed and the "wireless link recovery indication" cannot be completed.

Summary of the invention

The present disclosure provides a cell handover method and apparatus, and a radio network controller, which can solve the problem that the newly added macro cell radio link is repeatedly reconstructed when the micro cell is soft handover to the macro cell.

According to an aspect of an embodiment of the present disclosure, a cell handover method is provided, including:

Receiving measurement information, including the current wireless network, reported by the user terminal, where the measurement information includes newly added macro cell radio link requirement information;

The first target signal to noise ratio of the micro cell base station connected to the user terminal is increased according to the measurement information, so as to improve the uplink transmit power of the user terminal, and establish a radio link between the user terminal and the macro cell base station to be added. ;

After the user terminal establishes a radio link connection with the macro cell base station, the radio link recovery indication fed back by the macro cell base station is received.

Optionally, the receiving, by the user terminal, the measurement information of the current wireless network, where the measurement information includes the newly added macro cell radio link requirement information, and then:

And configuring, according to the measurement information, a second target signal to noise ratio of the macro cell base station to be added by the user terminal.

Optionally, according to the measurement information, the step of increasing the first target signal to noise ratio of the micro cell base station connected to the user terminal comprises:

When the current service type of the user terminal is a high-speed packet access service, the candidate target signal-to-noise ratio is configured for the micro cell base station connected to the user terminal according to the measurement information;

Evaluating whether an uplink load alarm occurs in the micro cell base station according to the current service authorization parameter;

When the micro cell base station does not generate an uplink load alarm, determining the candidate target signal to noise ratio as a first target signal to noise ratio of the micro cell base station;

When the micro-cell base station generates an uplink load alarm, the service authorization parameter is decreased, so that the micro-cell base station does not generate an uplink load alarm.

Optionally, after the step of receiving the radio link recovery indication fed back by the macro cell base station, the method further includes:

The reference Betaed parameter, the reference Betaec parameter, and the reference HarqPO parameter of the user terminal are configured by using radio resource control signaling; wherein the newly configured reference Betaed parameter, the reference Betaec parameter, and the reference HarqPO parameter are lower than before the newly added macro cell radio link The configuration history refers to the Betaed parameter, the reference Betaec parameter, and the reference HarqPO parameter.

Changing the serving cell of the user terminal to a newly added macro cell;

After the serving cell of the user terminal is changed to the macro cell, the reference Betaed parameter, the reference Betaec parameter, and the reference HarqPO parameter of the user terminal are configured by using the radio resource control signaling; wherein the newly configured reference Betaed parameter, the reference Betaec parameter, and the reference HarqPO The parameter is lower than the historical reference Betaed parameter, the reference Betaec parameter, and the reference HarqPO parameter configured before the new macro cell radio link is added.

When the current service type of the user terminal is the R99 low-speed service, the first target signal-to-noise ratio of the micro-cell base station to which the user terminal is connected is configured according to the measurement information, by reducing the configuration of the transmission block.

Configuring a reference BetaC parameter and a reference BetaD parameter of the user terminal by using radio resource control signaling, The newly configured reference BetaD parameter is lower than the historical reference BetaD parameter configured before the new macro cell radio link is added.

According to another aspect of the embodiments of the present disclosure, a cell switching apparatus is further provided, including:

The first receiving module is configured to receive measurement information of a current wireless network reported by the user terminal, where the measurement information includes newly added macro cell radio link requirement information;

The first configuration module is configured to: according to the measurement information, improve a first target signal to noise ratio of the micro cell base station connected to the user terminal, so as to improve uplink transmit power of the user terminal, and the user terminal and the macro cell base station to be added Establish a wireless link; and

The second receiving module is configured to receive a radio link recovery indication fed back by the macro cell base station after the user terminal establishes a radio link connection with the macro cell base station.

Optionally, the cell switching device further includes:

The second configuration module is configured to configure, according to the measurement information, a second target signal to noise ratio of the macro cell base station to be added by the user terminal.

The first configuration module includes:

a first processing unit, configured to: when the current service type of the user terminal is a high-speed packet access service, configure a candidate target signal-to-noise ratio for the micro cell base station connected to the user terminal according to the measurement information;

The evaluation unit is configured to: according to the current service authorization parameter, evaluate whether an uplink load alarm occurs in the micro cell base station;

The first configuration unit is configured to determine, when the micro cell base station does not generate an uplink load alarm, the candidate target signal to noise ratio as the first target signal to noise ratio of the micro cell base station;

The second processing unit is configured to reduce the service authorization parameter when the micro cell base station generates an uplink load alarm, so that the micro cell base station does not generate an uplink load alarm.

Optionally, the cell switching device further includes:

The third configuration module is configured to configure a reference Betaed parameter, a reference Betaec parameter, and a reference HarqPO parameter of the user terminal by using radio resource control signaling; wherein the newly configured reference Betaed parameter, the reference Betaec parameter, and the reference HarqPO parameter are lower than the new The historical reference Beta configuration parameters, reference Betaec parameters, and reference HarqPO parameters configured before the wireless link of the Zenghong cell.

Optionally, the cell switching device further includes:

a third processing module, configured to change a serving cell of the user terminal to a newly added macro cell;

The fourth configuration module is configured to: after the serving cell of the user terminal is changed to the macro cell, configure the reference Betaed parameter of the user terminal, the reference Betaec parameter, and the reference HarqPO by using the radio resource control signaling The parameter; wherein the newly configured reference Betaed parameter, the reference Betaec parameter, and the reference HarqPO parameter are lower than the historical reference Betaed parameter, the reference Betaec parameter, and the reference HarqPO parameter configured before the new macro cell radio link is added.

Optionally, the first configuration module includes:

The second configuration unit is configured to: when the current service type of the user terminal is the R99 low-speed service, configure the first target signal-to-noise ratio of the micro cell base station to which the user terminal is connected according to the measurement information, by reducing the configuration of the stepped transmission block.

Optionally, the cell switching device further includes:

The fifth configuration module is configured to configure a reference BetaC parameter and a reference BetaD parameter of the user terminal by using radio resource control signaling, where the newly configured reference BetaD parameter is lower than a historical reference BetaD configured before the newly added macro cell radio link parameter.

According to still another aspect of an embodiment of the present disclosure, there is also provided a radio network controller comprising the cell switching device as described above.

According to still another aspect of an embodiment of the present disclosure, there is also provided a non-transitory computer readable storage medium storing computer executable instructions for performing any of the above cell switching methods.

According to still another aspect of an embodiment of the present disclosure, there is also provided an electronic device comprising one or more processors, a memory, and one or more programs, the one or more programs being stored in a memory, when When executed by one or more processors, any of the above cell handover methods are performed.

According to still another aspect of an embodiment of the present disclosure, there is also provided a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions When the program instructions are executed by the computer, the computer is caused to execute any of the above-described cell switching methods.

According to the measurement information reported by the user terminal, when the macro cell needs to be added, the target SNR of the current micro cell base station is configured to improve the uplink transmit power of the user terminal, thereby improving the uplink signal to noise ratio of the macro cell to be added. The macro cell radio link recovery indication is completed, and the problem that the newly added macro cell radio link is repeatedly reconstructed can be avoided, thereby providing a condition for the macro cell to become the serving cell of the user terminal.

DRAWINGS

1 shows a schematic diagram of a network architecture in the related art;

2 is a schematic flowchart diagram of a cell handover method according to a first embodiment of the present disclosure;

Figure 3 is a flow chart showing a second embodiment of the present disclosure;

4 is a block diagram showing the structure of a cell switching apparatus according to a third embodiment of the present disclosure;

FIG. 5 is a block diagram showing the hardware structure of an electronic device according to a sixth embodiment of the present disclosure.

detailed description

Exemplary embodiments of the present disclosure will be described below with reference to the accompanying drawings. While the embodiments of the present disclosure are shown in the drawings, it should be understood that The features of the following embodiments and embodiments may be combined with each other without conflict.

In order to meet the exploding data service, a method of deploying the same-frequency low-power micro cell in the macro cell may be adopted, but when the user terminal is located in the handover area of the macro cell and the micro cell, due to the micro cell and the macro cell The difference in transmit power and the difference in receive sensitivity result in unbalanced uplink coverage and downlink coverage between macro and micro cells. In the soft handover process, the problem of poor quality of the newly added radio link uplink signal is repeated. In order to solve the problem, the embodiment of the present disclosure provides a cell handover method, which is applied to a radio network controller end, and a radio network controller (RNC) can be used as a primary in a third generation wireless network (3G network). The network element, which is part of the access network, is responsible for mobility management, call processing, link management, and handover mechanisms. The entire function of the RNC can be divided into two parts: radio resource management function and control function, wherein the radio resource management function can be set to maintain the stability of wireless propagation and the quality of service of the wireless connection; the control function can include all and radio bearer establishment, Keep and release related functions.

First embodiment

As shown in FIG. 2, the cell handover method provided by the embodiment of the present disclosure includes S210-S230.

In S210, the measurement information of the current wireless network reported by the user terminal is received, and the measurement information includes measurement information of the information of the newly added macro cell wireless link requirement.

Optionally, the user terminal periodically reports the measurement information of the current wireless network to the RNC, where the wireless network may be a wireless link between the user terminal and the multiple base stations, and the measurement information may include multiple representations of the user terminal. Information about the parameters of the wireless link performance and quality. For example, when the user terminal is located in the micro cell, the user terminal may establish a radio link connection only with the micro cell, and report the measurement information including the radio link performance and quality parameters of the micro cell; when the user terminal is located in the macro In the cell, the user terminal may establish a radio link connection only with the macro cell, and report the measurement information including the performance and quality parameters of the macro cell radio link; when the user terminal is located in the handover area between the micro cell and the macro cell, The user terminal can establish a wireless link connection with the micro cell and the macro cell. In this case, there are two radio links, and the reported measurement information may also include the characterization parameters of the two radio links, and the embodiment of the present disclosure may be applied to A scenario when the user terminal is located in a handover area between the micro cell and the macro cell.

In S220, according to the measurement information, the first target signal to noise ratio of the micro cell base station connected to the user terminal is increased, so as to improve the uplink transmit power of the user terminal, and the wireless connection between the user terminal and the macro cell base station to be added is established. link.

Optionally, configuring a first target signal to noise ratio of the micro cell base station connected to the user terminal according to parameters in the measurement information that characterize the currently connected micro cell radio link connection performance and quality, where the first target signal to noise ratio (SIR Target, Signal to Interference Ratio Target) includes an uplink target signal to noise ratio and a downlink target signal to noise ratio, which may be referred to herein as an uplink target signal to noise ratio. The user terminal is located in a handover area between the micro cell and the macro cell, and the distance between the user terminal and the micro cell is smaller than the distance between the macro cell and the macro cell, and the downlink transmit power of the macro cell base station is greater than the downlink transmit power of the micro cell base station, so The user terminal in the area can receive downlink signals sent by different base stations with better quality, so that the user terminal has two downlink transmission links with better quality; but because the transmission power of the same user terminal is fixed, this may result in a macro cell. The signal-to-noise ratio of the uplink signal sent by the user equipment received by the base station is much smaller than the signal-to-noise ratio of the uplink signal sent by the user equipment received by the micro-cell base station. In this case, the first target signal-to-noise ratio can be set relatively larger. The uplink transmit power of the user terminal is increased, so that the signal-to-noise ratio received by the macro cell to be added is increased, thereby ensuring that a wireless link is established with the macro cell base station and is actually used. In addition, the setting of the first target signal to noise ratio may enable the newly added macro cell radio link to meet the uplink air interface synchronization, and the size of the first target signal to noise ratio may be based on the micro cell currently belonging to the user terminal and the macro to be added. The difference in uplink load, pilot power difference, and reception sensitivity between cells is determined.

Optionally, after S210, the method further includes: configuring, according to the measurement information, a second target signal to noise ratio of the macro cell base station to be added by the user terminal. The second target signal to noise ratio may also include an uplink target signal to noise ratio and a downlink target signal to noise ratio, which may be referred to herein as an uplink target signal to noise ratio. Optionally, the second target signal to noise ratio may be set to be smaller than the first target signal to noise ratio, and the second target signal to noise ratio may be set such that the newly added macro cell radio link satisfies the uplink air interface synchronization.

In S230, after the user terminal establishes a radio link connection with the macro cell base station, receiving the macro cell base The wireless link recovery indication of the station feedback.

After the radio link connection between the user terminal and the macro cell base station is stabilized, the macro cell base station can feed back the radio link recovery indication to the RNC, which can avoid the problem that the newly added cell is repeatedly established due to the uplink instability.

Second embodiment

The foregoing first embodiment briefly introduces a cell handover method in the embodiment of the present disclosure. The following is an example of how to configure a second target signal to noise ratio of a micro cell base station connected to a user terminal according to measurement information in combination with an optional application scenario. Related introduction.

Optionally, when the measurement information is obtained, the service type of the current user terminal is acquired, and the process of configuring the first target signal to noise ratio is different according to different service types. The following describes the high-speed packet access service and low-speed service as an example.

As shown in FIG. 3, according to the measurement information, configuring the first target signal to noise ratio of the micro cell base station connected to the user terminal may include S301-SS305.

In S301, when the current service type of the user terminal is a high-speed packet access service, the candidate target signal-to-noise ratio is configured for the micro cell base station connected to the user terminal according to the measurement information.

In S302, according to the current service authorization parameter, it is evaluated whether an uplink load alarm occurs in the micro cell base station.

When the RNC receives the measurement report of the High Speed Packet Access (HSPA) sent by the user terminal, the RNC evaluates the uplink load of the current micro cell, and the evaluation manner may be that the signal to noise ratio of the micro cell base station is assumed. The threshold is raised by a threshold value, that is, the signal to noise ratio threshold of the micro cell base station is raised to a candidate target signal to noise ratio, and the candidate target signal to noise ratio is a preset second target signal to noise ratio, and then the current service authorization parameter is evaluated ( Whether the Servicing Grant (SG) will cause an uplink load alarm in the micro area.

Step S303: When the micro cell base station does not generate an uplink load alarm, determine the candidate target signal to noise ratio as the first target signal to noise ratio of the micro cell base station.

If the current SG authorization parameter does not cause an uplink load alarm in the micro cell, indicating that the uplink interference of the current micro cell base station does not affect the normal communication of the micro-area radio link of the user terminal, the candidate target of the micro cell base station may be directly signal-stimulated. The ratio is determined to be the first target signal to noise ratio of the microcell base station to control the increase in the transmission power of the user terminal.

In S304, when an uplink load alarm occurs in the micro cell base station, the service authorization parameter is lowered to The micro cell base station does not generate an uplink load alarm.

If the SNR threshold of the micro cell base station is increased, and the current SG authorization parameter causes an uplink load alarm of the micro cell, the RNC needs to evaluate a lower SG authorization, and finally determine the SG authorization of an evaluation site, so that the micro cell does not An uplink load alarm is generated. The SG authorization of the determined evaluation station is smaller than the current SG authorization, and then the SG authorization of the evaluation office is sent to the user terminal, so that the micro area uplink load is within the normal range.

In S305, the candidate target signal to noise ratio is determined as the first target signal to noise ratio of the micro cell base station.

When the current SG authorization parameter is lowered, the micro cell does not generate an uplink load alarm, and then the candidate target signal to noise ratio of the micro cell base station is determined as the first target signal to noise ratio.

After the first target signal to noise ratio of the micro cell radio link is increased and the second target signal to noise ratio of the macro cell radio link is configured, the macro cell radio link is successfully established, and the radio link recovery indication fed back by the macro cell base station is received. The RNC configures the reference Betaed parameter, the reference Betaec parameter, and the reference HarqPO parameter of the user terminal by using Radio Resource Control (RRC); wherein the newly configured reference Betaed parameter, the reference Betaec parameter, and the reference HarqPO parameter are lower than Added historical reference Betaed parameters, reference Betaec parameters, and reference HarqPO parameters configured before the macro cell radio link. Here, the reference Betae parameter, the reference Betaec parameter, and the reference HarqPO parameter configured by the RNC for the user terminal are relatively low, so that the uplink rate of the user terminal is not affected, and the SG authorization scheduling of the micro cell is restored, and the uplink interference of the micro cell can also be Come down.

Optionally, after receiving the radio link recovery indication fed back by the macro cell base station, the RNC changes the serving cell of the user terminal from the micro cell to the macro cell, that is, the RNC initiates the high speed packet downlink access service (High Speed The serving cell change procedure of the Downlink Packet Access (HSDPA) and the serving cell change procedure of the High Speed Uplink Packet Access (HSUPA), the macro cell is also changed to the HSDPA serving cell and the HSUPA serving cell. After the serving cell of the user terminal is changed to the macro cell, the reference Betaed parameter of the macro cell radio link, the reference Betaec parameter and the reference HarqPO parameter are configured through RRC, wherein the HSUPA serving cell is configured with the same lower reference Betaed, Betaec and HarqPO parameters, wherein The reference Betae parameter, the reference Betaec parameter, and the reference HarqPO parameter of the user terminal configured by the macro cell base station may be the same as the reference Betaed parameter, the reference Betaec parameter, and the reference HarqPO parameter of the user terminal by using the RRC signaling by the RNC.

Optionally, the step of configuring the first target signal to noise ratio of the micro cell base station connected to the user terminal according to the measurement information includes: when the current service type of the user terminal is the R99 low speed service, according to the measurement The information is configured to configure a first target signal to noise ratio of the micro cell base station to which the user terminal is connected by reducing the transmit block configuration.

When the RNC receives the measurement report of the R99 low-speed service (Rlease 99 service) sent by the user terminal, the RNC selects a smaller transport block (TB) to ensure that the uplink load of the micro-area is normal, thereby improving the micro-area wireless chain. The first target signal to noise ratio of the path and the second target signal to noise ratio of the macro cell radio link. After that, the RNC configures the reference BetaC parameter and the reference BetaD parameter of the user terminal through RRC, so that the macro cell becomes the serving cell of the current user terminal. Here, the reference BetaD parameter configured by the RNC for the user terminal is relatively low, that is, the newly configured reference BetaC parameter may not be lower than the reference BetaC parameter configured before the new macro cell radio link is added, but the latest configured reference BetaD parameter is lower than The historical reference BetaD parameter configured before the new macro cell radio link is added, so that the uplink rate of the user terminal is not affected, the RNC can freely select the TB transmission, and the uplink interference of the micro cell can also be lowered.

According to the measurement information reported by the user equipment, when the macro cell needs to be added, the target signal to noise ratio of the corresponding macro cell base station is configured, so that the macro cell radio link recovery indication can be completed, and the newly added macro cell radio link is avoided. The problem of repeated reconstruction provides conditions for the macro cell to truly become the serving cell of the user terminal.

Third embodiment

The foregoing first embodiment and the second embodiment respectively introduce the cell switching method of the present disclosure from different application scenarios. The third embodiment of the present disclosure will introduce related devices in conjunction with the accompanying drawings.

As shown in FIG. 4, in another aspect of the disclosure, a cell switching apparatus is further provided, including a first receiving module 410, a first configuration module 420, and a second receiving module 430.

The first receiving module 410 is configured to receive measurement information of a current wireless network reported by the user terminal, where the measurement information includes measurement information of information about a new macro cell radio link requirement;

The first configuration module 420 is configured to: according to the measurement information, improve a first target signal to noise ratio of the micro cell base station connected to the user terminal, so as to improve uplink transmit power of the user terminal, and enable the user terminal and the macro cell base station to be added. Establish a wireless link between them;

The second receiving module 430 is configured to receive a radio link recovery indication fed back by the macro cell base station after the user terminal establishes a radio link connection with the macro cell base station.

Optionally, the cell switching device further includes:

a second configuration module, configured to configure a macro cell base station to be added by the user terminal according to the measurement information The second target signal to noise ratio.

Optionally, the first configuration module includes:

Optionally, the cell switching device further includes:

The fourth configuration module is configured to: after the serving cell of the user terminal is changed to the macro cell, configure the reference Betaed parameter, the reference Betaec parameter, and the reference HarqPO parameter of the user terminal by using radio resource control signaling; wherein, the newly configured reference Betaed parameter The reference Betaec parameter and the reference HarqPO parameter are lower than the historical reference Betaed parameter, the reference Betaec parameter, and the reference HarqPO parameter configured before the new macro cell radio link is added.

Optionally, the first configuration module includes:

The second configuration unit is configured to: when the current service type of the user terminal is the R99 low-speed service, configure the first target signal-to-noise ratio of the micro cell base station to which the user terminal is connected according to the measurement information, by reducing the configuration of the transmission block.

Optionally, the cell switching device further includes:

It should be noted that the device is a device corresponding to the cell switching method, and the foregoing method is implemented. All implementations in the examples are applicable to embodiments of the device.

Fourth embodiment

According to still another aspect of the embodiments of the present disclosure, a radio network controller (RNC) is further provided, including any one of the cell switching devices described above.

Fifth embodiment

Sixth embodiment

As shown in FIG. 5, a hardware structure diagram of an electronic device according to an embodiment of the present disclosure is shown in FIG. 5. The electronic device includes:

A processor 510 and a memory 520; may further include a communication interface 530 and a bus 540.

The processor 510, the memory 520, and the communication interface 530 can complete communication with each other through the bus 540. Communication interface 530 can be used for information transfer. The processor 510 can invoke logic instructions in the memory 520 to perform any of the cell switching methods of the above embodiments.

In addition, the logic instructions in the memory 520 described above may be implemented in the form of a software functional unit and sold or used as a stand-alone product, and may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present disclosure may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network) The device or the like) performs all or part of the steps of the method described in the embodiments of the present disclosure. The foregoing storage medium may be a non-transitory storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. A medium that can store program code, or a transitory storage medium.

Finally, it should be understood that those skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by executing related hardware by a computer program, which is completed. The program may be stored in a non-transitory computer readable storage medium, and the program may include a flow of an embodiment of the method as described above, wherein the computer readable storage medium may be a magnetic disk, an optical disk, or a read only memory. Body (ROM) or random access memory (RAM).

Industrial applicability

The embodiments of the present disclosure provide a cell handover method, a device, and a radio network controller, which can solve the problem of repeated reestablishment of a new macro cell radio link, thereby providing a condition for the macro cell to become a serving cell of the user terminal.

Claims

A cell handover method includes:

Receiving measurement information of a current wireless network reported by the user terminal, where the measurement information includes newly added macro cell radio link requirement information;

And improving, according to the measurement information, a first target signal to noise ratio of the micro cell base station connected to the user terminal, so as to improve uplink transmit power of the user terminal, and the user terminal and the macro cell base station to be added Establish a wireless link between;

After the user terminal establishes a radio link connection with the macro cell base station, receiving a radio link recovery indication fed back by the macro cell base station.
The method of claim 1, after receiving the measurement information of the current wireless network reported by the user terminal, the method further includes:

And configuring, according to the measurement information, a second target signal to noise ratio of the macro cell base station to be added by the user terminal.
The method according to claim 1, wherein, according to the measurement information, increasing a first target signal to noise ratio of the micro cell base station connected to the user terminal comprises:

When the current service type of the user terminal is a high-speed packet access service, configuring a candidate target signal-to-noise ratio for the micro cell base station connected to the user terminal according to the measurement information;

Evaluating whether an uplink load alarm occurs in the micro cell base station according to the current service authorization parameter;

When the micro cell base station does not generate an uplink load alarm, determining the candidate target signal to noise ratio as a first target signal to noise ratio of the micro cell base station;

When the micro-cell base station generates an uplink load alarm, the service authorization parameter is decreased, so that the micro-cell base station does not generate an uplink load alarm.
The method of claim 3, after receiving the radio link recovery indication fed back by the macro cell base station, further comprising:

Configuring a reference Betaed parameter, a reference Betaec parameter, and a reference HarqP0 parameter of the user terminal by using radio resource control signaling; wherein the newly configured reference Betaed parameter, the reference Betaec parameter, and the reference HarqP0 parameter are lower than the newly added macro cell The historical configuration of the wireless link is referenced to the Betaed parameter, the reference Betaec parameter, and the reference HarqP0 parameter.
The method of claim 3, after receiving the radio link recovery indication fed back by the macro cell base station, further comprising:

Changing the serving cell of the user terminal to a newly added macro cell;

Configuring a reference Betaed parameter of the user terminal by using radio resource control signaling, refer to Betaec The parameter and the reference HarqP0 parameter; wherein the newly configured reference Betaed parameter, the reference Betaec parameter, and the reference HarqP0 parameter are lower than the historical reference Betaed parameter, the reference Betaec parameter, and the reference HarqP0 parameter configured before the new macro cell radio link is added.
The method according to claim 1, wherein, according to the measurement information, increasing a first target signal to noise ratio of the micro cell base station connected to the user terminal comprises:

When the current service type of the user terminal is the R99 low-speed service, the first target signal-to-noise ratio of the micro-cell base station to which the user terminal is connected is configured according to the measurement information, by reducing the configuration of the transmission block.
The method of claim 6, after receiving the radio link recovery indication fed back by the macro cell base station, further comprising:

The reference BetaC parameter and the reference BetaD parameter of the user terminal are configured by radio resource control signaling, wherein the newly configured reference BetaD parameter is lower than a historical reference BetaD parameter configured before the new macro cell radio link is added.
A cell switching device includes:

The first receiving module is configured to receive measurement information of a current wireless network reported by the user terminal, where the measurement information includes newly added macro cell radio link requirement information;

The first configuration module is configured to: according to the measurement information, improve a first target signal to noise ratio of the micro cell base station connected to the user terminal, so as to improve uplink transmit power of the user terminal, and enable the user terminal to Establishing a wireless link between the newly added macro cell base stations;

The second receiving module is configured to receive a radio link recovery indication fed back by the macro cell base station after the user terminal establishes a radio link connection with the macro cell base station.
The apparatus of claim 8 further comprising:

The second configuration module is configured to configure, according to the measurement information, a second target signal to noise ratio of the macro cell base station to be added by the user terminal.
The apparatus of claim 8 wherein said first configuration module comprises:

a first processing unit, configured to configure a candidate target signal to noise ratio for the micro cell base station connected to the user terminal according to the measurement information when the current service type of the user terminal is a high speed packet access service;

An evaluation unit, configured to: determine, according to the current service authorization parameter, whether an uplink load alarm occurs in the micro cell base station;

a first configuration unit, configured to: when the micro cell base station does not generate an uplink load alarm, The candidate target signal to noise ratio is determined as the first target signal to noise ratio of the microcell base station;

The second processing unit is configured to reduce the service authorization parameter when the micro cell base station generates an uplink load alarm, so that the micro cell base station does not generate an uplink load alarm.
The apparatus of claim 10 further comprising:

a third configuration module, configured to configure, by using radio resource control signaling, a reference Betaed parameter, a reference Betaec parameter, and a reference HarqP0 parameter of the user terminal; wherein the reference configured Betaed parameter, the reference Betaec parameter, and the reference HarqP0 parameter are newly configured. It is lower than the historical reference Betaed parameter, the reference Betaec parameter, and the reference HarqP0 parameter configured before the new macro cell radio link is added.
The apparatus of claim 10 further comprising:

a third processing module, configured to change a serving cell of the user terminal to a newly added macro cell;

a fourth configuration module, configured to: after the serving cell of the user terminal is changed to a macro cell, configure a reference Betaed parameter, a reference Betaec parameter, and a reference HarqP0 parameter of the user terminal by using radio resource control signaling; The configured reference Betaed parameter, the reference Betaec parameter, and the reference HarqP0 parameter are lower than the historical reference Betaed parameter, the reference Betaec parameter, and the reference HarqP0 parameter configured before the new macro cell radio link is added.
The apparatus of claim 9, wherein the first configuration module comprises:

a second configuration unit, configured to: when the current service type of the user terminal is a R99 low-speed service, configure a first target message of the micro cell base station to which the user terminal is connected by reducing the configuration of the transmit block according to the measurement information Noise ratio.
The apparatus of claim 13 further comprising:

a fifth configuration module, configured to configure a reference BetaC parameter and a reference BetaD parameter of the user terminal by using radio resource control signaling, where the newly configured reference BetaD parameter is lower than configured before adding a macro cell radio link The history refers to the BetaD parameter.
A radio network controller comprising the cell switching device of any of claims 8-14.
A non-transitory computer readable storage medium storing computer executable instructions for performing the cell handover method of any of claims 1-7.