CN107820282B

CN107820282B - Cell switching method, base station and user equipment

Info

Publication number: CN107820282B
Application number: CN201610819861.1A
Authority: CN
Inventors: 刘磊; 崔航
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2016-09-12
Filing date: 2016-09-12
Publication date: 2020-11-13
Anticipated expiration: 2036-09-12
Also published as: CN107820282A

Abstract

The embodiment of the invention discloses a cell switching method, a base station and user equipment. The cell switching method comprises the following steps: judging whether the user equipment currently residing in the first cell meets the cell switching condition; when the user equipment meets the cell switching condition, sending a detection command message to the user equipment; sending a probe request message to a second cell that causes the user equipment to satisfy the cell switching condition; the detection command message is used for triggering the user equipment to establish connection with the second cell and perform data interaction with the second cell; the detection request message is used for triggering the second cell to establish connection with the user equipment and performing data interaction of service quality detection so as to obtain the service quality provided by the second cell for the user equipment; the quality of service is used for controlling the switching of the user equipment from a first cell to a second cell; the second cell is a neighbor cell of the first cell.

Description

Cell switching method, base station and user equipment

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a cell switching method, a base station, and a user equipment.

Background

In the process that the mobile terminal moves from one cell (a first cell) to another cell (a second cell), the base station can judge the switching time according to the strength relation of signals of the two cells. The currently used criteria are Reference Signal Received Power (RSRP) or Reference Signal Received Quality (RSRQ). RSRP may represent the signal strength of one cell and RSRQ may represent the total power of one carrier frequency. For example, the base station triggered handover may be based on the principle: and if the RSRP of the first cell is lower than a certain threshold value and the RSRP of the second cell is higher than a certain threshold value, triggering the switching. In specific communication, after the mobile terminal is switched from the first cell to the second cell, the problem that the communication quality of the mobile terminal is rather downslide is found.

Disclosure of Invention

In view of the above, embodiments of the present invention are directed to a cell handover method, a base station, and a user equipment, which at least partially solve the above problems.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a first aspect of the present invention provides a cell switching method, including:

judging whether the user equipment currently residing in the first cell meets the cell switching condition;

when the user equipment meets the cell switching condition, sending a detection command message to the user equipment;

sending a probe request message to a second cell that causes the user equipment to satisfy the cell switching condition;

the detection command message is used for triggering the user equipment to establish connection with the second cell and perform data interaction with the second cell;

the detection request message is used for triggering the second cell to establish connection with the user equipment and performing data interaction of service quality detection so as to obtain the service quality provided by the second cell for the user equipment; the quality of service is used for controlling the switching of the user equipment from a first cell to a second cell; the second cell is a neighbor cell of the first cell.

Based on the above scheme, the sending a probe command to the ue when the ue meets the cell handover condition includes:

sending a temporary handover command message to the user equipment; wherein the temporary handover command message is used to trigger the user equipment to temporarily handover from the first cell to the second cell;

the sending a probe request message to a second cell that makes the user equipment satisfy the cell switching condition includes:

sending a switching trigger message carrying a detection mark to the second cell; the detection mark is used for triggering the second cell to accept the cell temporary switching of the user equipment and to perform data interaction with the user equipment.

Based on the above scheme, the method further comprises:

receiving the user equipment and/or the second cell, and sending the service quality information which represents the service provided by the second cell for the user equipment;

selecting a resident cell of the user equipment according to the service quality information; wherein the resident cell is the second cell or the first cell.

Based on the scheme, the switching trigger message also carries a switching duration for controlling the temporary switching;

and the switching duration is used for triggering the second cell to determine whether to continue to provide communication service for the user equipment or reversely switch the user equipment back to the first cell according to the service quality after the duration for temporarily switching the user equipment to the second cell reaches the switching duration.

Based on the scheme, the temporary switching command message also carries a switching duration for controlling temporary switching;

the switching duration is used for selecting to stay in the second cell or return to the first cell after the duration of the user equipment switching to the second cell reaches the switching duration.

Based on the above scheme, the sending a probe command message to the ue when the ue meets the cell handover condition includes:

when the user equipment meets the cell switching condition, sending a dual-connection indication message to the user equipment; the dual connectivity indication message is used for triggering the user equipment to establish a connection with the second cell;

sending a dual connectivity request to the second cell; the dual connection request is used for triggering the connection establishment between the second cell and the user equipment while the user equipment keeps connected with the first cell.

Based on the above scheme, the method further comprises:

transmitting first data to the second cell; the first data is used for being sent to the user equipment by the second cell;

receiving second data sent by the second cell; the second data is sent to the second cell after the user equipment receives the first data sent by the second cell;

and judging the service quality provided by the second cell for the user equipment according to the second data.

Based on the above scheme, the method further comprises:

and controlling the user equipment to disconnect from the first cell or the second cell according to the service quality of the second cell.

A second aspect of the present invention provides a cell switching method, including:

receiving a detection request message sent by a first cell; wherein the probe request message is sent by the first cell when detecting that the user equipment meets the cell switching condition;

establishing connection with the user equipment according to the detection request message;

performing data interaction with the user equipment through the connection to obtain the service quality of the second cell for providing service for the user equipment; wherein the service quality is used for controlling the switching of the user equipment from a first cell to a second cell; the second cell is a neighbor cell of the first cell.

Based on the above scheme, the receiving the probe request message sent by the first cell includes:

receiving a switching trigger message carrying a detection mark and sent by the first cell;

the establishing a connection with the user equipment according to the probe request message includes:

accepting the user equipment to temporarily switch from the first cell to the second cell.

Based on the scheme, the switching trigger message also carries the switching duration of the temporary switching;

the method further comprises the following steps:

and when the switching duration of the user equipment for temporarily switching to the second cell reaches the switching duration, continuing to provide service for the user equipment according to the service quality selection, or switching the user equipment back to the first cell in a reverse direction.

Based on the above scheme, the method further comprises:

sending quality of service information characterizing the quality of service to the first cell; the service quality information is used for the first cell to select a resident cell for the user equipment; the resident cell is the first cell or the second cell.

receiving a dual-connection request sent by the first cell;

and according to the double connection request, establishing connection with the user equipment while the user equipment keeps connection with the first cell.

Based on the above scheme, the method further comprises:

receiving first data sent by the first cell;

sending the first data to the user equipment;

receiving second data returned by the user equipment based on the first data;

transmitting the second data to the first cell; the second data is used for the first cell to determine the service quality provided by the second cell for the user equipment.

A third aspect of the embodiments of the present invention provides a cell switching method, including:

receiving a detection command message sent by a first cell, wherein the detection command message is sent when user equipment meets a cell switching condition;

according to the detection command message, establishing connection with a second cell which enables the user equipment to meet the cell switching condition;

performing data interaction with the second cell through the connection to obtain the service quality of the second cell for providing service for the user equipment; wherein the service quality is used for controlling the switching of the user equipment from a first cell to a second cell; the second cell is a neighbor cell of the first cell.

Based on the above scheme, the receiving the probe command message sent by the first cell includes:

receiving a temporary handover command message sent by the first cell;

the establishing a connection with a second cell that enables the ue to satisfy the cell handover condition according to the probing command message includes:

temporarily switching from the first cell to the second cell according to the temporary handover command message.

Based on the scheme, the temporary switching command message carries a switching duration for controlling temporary switching;

the method further comprises the following steps:

and when the duration of the temporary handover to the second cell reaches the handover duration, continuing to stay in the second cell or returning to the first cell according to the service quality.

Based on the above scheme, the method further comprises:

and sending the service quality information representing the service quality to the first cell.

receiving a dual-connection indication message sent by the first cell;

and according to the double connection indication message, establishing connection with the second cell while keeping connection with the first cell.

Based on the above scheme, the method further comprises:

receiving first data sent by the second cell; wherein the first data is sent by the first cell to the second cell;

transmitting second data to the second cell based on the first data; the second data is used for the second cell to send to the first cell, and is used for the first cell to determine the quality of service provided by the second cell for the user equipment.

A fourth aspect of the present invention provides a base station, where the base station is a first base station that forms a first cell, and the base station includes:

a judging unit, configured to judge whether a user equipment currently camped on a first cell meets a cell switching condition;

a first sending unit, configured to send a probe command message to the user equipment when the user equipment meets a cell handover condition;

a second sending unit, configured to send a probe request message to a second cell that enables the ue to satisfy the cell switching condition;

Based on the above scheme, the first sending unit is specifically configured to send a temporary handover command message to the ue; wherein the temporary handover command message is used to trigger the user equipment to temporarily handover from the first cell to the second cell;

the second sending unit is specifically configured to send a handover trigger message carrying a detection flag to the second cell; the detection mark is used for triggering the second cell to accept the cell temporary switching of the user equipment and to perform data interaction with the user equipment.

Based on the above scheme, the first base station further includes:

a first receiving unit, configured to receive quality of service information, which is sent by the user equipment and/or the second cell and characterizes that the second cell provides a service for the user equipment;

a selecting unit, configured to select a resident cell of the ue according to the qos information; wherein the resident cell is the second cell or the first cell.

Based on the above scheme, the first sending unit is specifically configured to send a dual connectivity instruction message to the user equipment when the user equipment meets a cell handover condition; the dual connectivity indication message is used for triggering the user equipment to establish a connection with the second cell;

the second sending unit is specifically configured to send a dual connectivity request to the second cell; the dual connection request is used for triggering the connection establishment between the second cell and the user equipment while the user equipment keeps connected with the first cell.

Based on the above scheme, the second sending unit is further configured to send the first data to the second cell; the first data is used for being sent to the user equipment by the second cell;

the first base station further comprises;

the first receiving unit is further configured to receive second data sent by the second cell; the second data is sent to the second cell after the user equipment receives the first data sent by the second cell;

the determining unit is further configured to determine, according to the second data, a quality of service provided by the second cell for the ue.

Based on the above scheme, the first base station further includes:

and the control unit is used for controlling the user equipment to disconnect from the first cell or the second cell according to the service quality of the second cell.

A fifth aspect of the embodiments of the present invention provides a base station, where the base station is a second base station that forms a second cell, and the base station includes:

a second receiving unit, configured to receive a probe request message sent by a first cell; wherein the probe request message is sent by the first cell when detecting that the user equipment meets the cell switching condition;

a first connection unit, configured to establish a connection with the user equipment according to the probe request message;

a first interaction unit, configured to perform data interaction with the ue through the connection, so as to obtain a quality of service for the ue provided by a second cell; wherein the service quality is used for controlling the switching of the user equipment from a first cell to a second cell; the second cell is a neighbor cell of the first cell.

Based on the above scheme, the second receiving unit is specifically configured to receive a handover trigger message carrying a detection flag and sent by the first cell;

the first connection unit is configured to accept that the user equipment is temporarily handed over from the first cell to the second cell.

the second base station further comprises:

and the first switching unit is used for selecting to continue providing service for the user equipment according to the service quality or switching the user equipment back to the first cell when the switching duration of the user equipment temporarily switched to the second cell reaches the switching duration.

Based on the above scheme, the second base station further includes:

a third sending unit, configured to send quality of service information representing the quality of service to the first cell; the service quality information is used for the first cell to select a resident cell for the user equipment; the resident cell is the first cell or the second cell.

Based on the above scheme, the second receiving unit is further configured to receive a dual connectivity request sent by the first cell;

the first connection unit is specifically configured to establish a connection with the user equipment while the user equipment maintains a connection with the first cell according to the dual connectivity request.

Based on the above scheme, the second receiving unit is further configured to receive first data sent by the first cell;

the first interaction unit is further configured to send the first data to the user equipment, and receive second data returned by the user equipment based on the first data;

the second base station further comprises:

a third sending unit, configured to send the second data to the first cell; the second data is used for the first cell to determine the service quality provided by the second cell for the user equipment.

A sixth aspect of an embodiment of the present invention provides a user equipment, including:

a third receiving unit, configured to receive a probe command message sent by a first cell, where the probe command message is sent when a user equipment meets a cell handover condition;

a second connection unit, configured to establish a connection with a second cell that enables the ue to satisfy the cell switching condition according to the probe command message;

a second interaction unit, configured to perform data interaction with the second cell through the connection, so as to obtain quality of service for the user equipment provided by the second cell; wherein the service quality is used for controlling the switching of the user equipment from a first cell to a second cell; the second cell is a neighbor cell of the first cell.

Based on the above scheme, the third receiving unit is configured to receive a temporary handover command message sent by the first cell;

the second connection unit is configured to temporarily switch from the first cell to the second cell according to the temporary handover command message.

the user equipment further comprises:

and the second switching unit is used for continuing to stay in the second cell or returning to the first cell according to the service quality after the duration of the temporary switching to the second cell reaches the switching duration.

Based on the above scheme, the user equipment further includes:

a fourth sending unit, configured to send quality of service information representing the quality of service to the first cell.

Based on the above scheme, the third receiving unit is specifically configured to receive a dual connectivity indication message sent by the first cell;

the second connection unit is specifically configured to establish connection with the second cell while maintaining connection with the first cell according to the dual connectivity instruction message.

Based on the above scheme, the second interaction unit is specifically configured to receive first data sent by the second cell; wherein the first data is sent by the first cell to the second cell; transmitting second data to the second cell based on the first data; the second data is used for the second cell to send to the first cell, and is used for the first cell to determine the quality of service provided by the second cell for the user equipment.

According to the cell switching method, the base station and the user equipment provided by the embodiment of the invention, before formally switching the user equipment from the first cell to the second cell, the user equipment is controlled to establish connection with the second cell and perform data interaction through the sending of the detection request message and the detection command message, so that the service quality of the service provided by the second cell for the user equipment is obtained, and finally, the service quality provides an important basis for selecting whether the user equipment cell is a resident cell or the first cell or the second cell; therefore, the phenomenon that in the prior art, after one user equipment meets the switching condition, the user equipment is directly switched to the corresponding cell, but the corresponding cell cannot provide the service quality required by the user equipment in the past switching is found, and the communication quality of the user equipment communication is improved.

Drawings

Fig. 1 is a flowchart illustrating a first cell handover method according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating a second cell handover method according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a third cell handover method according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a first base station according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a second base station according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

fig. 7 is a flowchart illustrating a third cell handover method according to an embodiment of the present invention.

Detailed Description

The technical solution of the present invention is further described in detail with reference to the drawings and the specific embodiments of the specification.

As shown in fig. 1, the present embodiment provides a cell handover method, including:

step S110: judging whether the user equipment currently residing in the first cell meets the cell switching condition;

step S120: when the user equipment meets the cell switching condition, sending a detection command message to the user equipment;

step S130: sending a probe request message to a second cell that causes the user equipment to satisfy the cell switching condition;

The cell switching method described in this embodiment may be a method applied to a first base station forming a first cell.

In step S110, it is determined whether the user equipment currently camped on the first cell meets the cell handover condition, for example, the user equipment may detect an RSRP or RSRQ signal sent by a neighboring cell of the first cell and send the RSRP or RSRQ signal to the first base station through a detection report, and when the first base station receives the RSRP or RSRQ signal, the signal strength of the RSRP or RSRQ signal is considered to be strong enough, the user equipment is considered to meet the handover condition. Usually, the handover procedure is performed directly. Here, the neighboring cell includes the second cell; the second cell here may be 1 or more cells adjacent to the first cell. In this embodiment, the second cell may be a cell that sends an RSRP or RSRQ signal, and when the signal strength of the RSRP or RSPQ reaches a threshold value during the ue detection, it may be considered that the handover condition is satisfied.

In this embodiment, the first base station may send a probe command message to the ue. The probing command message triggers the ue to establish a connection with the second cell and perform data interaction. The data interaction herein may include interaction of various data, for example, interaction of voice communication data. Thus, at least one of the first base station, the second base station forming the second cell, and the user equipment may obtain, according to data interaction, various Quality of Service (QoS) characterizing that the second cell can provide Service for the user equipment, such as data transmission rate, transmission delay, and bit error rate during data interaction. In this way, it is possible to select whether the user equipment continues to camp on the first cell or is handed over to the second cell depending on the quality of service that the second cell can specifically provide for the user equipment. Therefore, the phenomenon that the service quality of the user equipment is poor and the like caused by the fact that the service quality which can be provided by the second cell is not good enough to the first cell after the user equipment is switched to the second cell because the RSRP or RSRQ signal sent by the second cell is strong enough can be avoided.

It is worth noting that: in this embodiment, the execution sequence of the step S120 and the step S130 does not have to be required, and the step S120 and the step S130 may be executed simultaneously, or the step S120 may be executed first, and then the step S130 is executed, or the step S130 may be executed first, and then the step S120 is executed. As long as it is ensured that the steps S120 and S130 are performed after the step S110.

The detection command message and the detection request message have multiple message types, and the detection of the service quality provided by the second cell for the user equipment is also divided into multiple types, and two optional modes are provided as follows:

the first alternative is as follows:

the step S120 may include:

the step S130 may include:

In this embodiment, through the sending of the handover command message and the handover trigger message, the ue currently residing in the first cell may be temporarily handed over from the first cell to the second cell, so that the quality of service that the second cell can provide for the ue is detected through data interaction between the second cell and the ue within the time period when the ue is temporarily handed over to the second cell, thereby determining whether to formally handover the ue to the second cell.

In this aspect, the method further includes:

The user equipment and the second cell perform data interaction, and the user equipment and/or the second cell can obtain detection of an error rate, transmission delay or transmission bandwidth through data processing such as data error correction and detection of information such as whether data is received or whether the received data is overtime, so that the service quality which can be provided for the user equipment by the second cell is determined. After obtaining the service quality, the ue or the second cell needs to inform the first cell, and the first cell finally determines whether to formally handover the ue to the second cell. The first cell will receive the quality of service information in this embodiment. And then according to the service quality information, the user equipment is switched out from the cell (namely the first cell) completely, or the second cell is controlled to switch the user equipment back to the cell in the reverse direction by sending an instruction to the second cell.

In one case, if the service quality of the service provided by the second cell is higher than the predetermined threshold, the ue may be controlled to remain in the second cell, and when the service quality of the service provided by the second cell is not higher than the predetermined threshold, the ue may be controlled to switch back to the first cell.

In another case, the quality of service of the service provided by the second cell may be compared with the quality of service of the service provided by the first cell for the user equipment, and if the second cell can provide a higher quality of service, the user equipment may be controlled to remain in the second cell, otherwise, the user equipment is switched back to the first cell.

Of course, the above are only two realizations for selecting the camping cell of the user equipment according to the service quality information, but the invention is not limited to the above two manners.

In some embodiments, the handover trigger message further carries a handover duration for controlling the temporary handover;

In this embodiment, the receiving of the qos information may include various manners:

for example, the second cell or user equipment, upon detecting the quality of service, sends to the first cell; of course, the handover trigger message and/or the temporary handover command message also carry a sending time indication, which indicates the second cell or the ue, and sends the qos message before the time indicated by the sending time indication, otherwise, the first cell may consider that the network status of the current second cell is not good, which results in that the qos detection cannot be performed normally, and the ue is handed back to the first cell. For example, the user equipment is instructed to handover back to the first cell by sending a handover indication to the second cell, which sends a handover indication to the user equipment.

The specific control of the switching duration may be determined by implementing negotiation between any two or three of the first cell, the second cell, and the user equipment, or may be predetermined according to a communication protocol, and in this embodiment, the switching duration may be controlled by the first cell. Two ways of controlling the handover duration of the temporary handover by the first cell are provided below:

the first method comprises the following steps:

the handover duration may be timed by a timer, for example, the handover trigger message may directly perform the timer for timing the handover duration, when the ue is temporarily handed over to the second cell, the ue starts timing, and once the timing is over, the second cell determines whether to formally handover the ue to the second cell according to the service quality provided by the second cell for the ue, otherwise, the ue is handed back to the first cell. If the second cell selection formally switches the user equipment to the second cell, the user equipment will continue to camp on the second cell.

And the second method comprises the following steps:

the temporary switching command message also carries a switching duration for controlling temporary switching;

In the first mode, the duration of the temporary handover in the second cell reaches the handover duration, and it is determined whether the ue is formally handed over to the second cell, whereas in the second mode, the handover duration is carried in the temporary handover command message, and the ue can determine whether to continue to remain in the second cell or return to the first cell.

After the second cell or the ue selects whether the ue is finally formally handed over, the handover result of the first cell may be notified for convenience of information processing of the first cell. In this case, the first cell will also receive the handover result. Of course, it may also be that when it is determined that the ue is formally handed over to the second cell, no message may be sent, and at this time, the first cell does not receive the ue or the second cell within the predetermined time period, and requests the ue to return the handover request of the first cell, and it is default that the ue has been formally handed over to the second cell.

The second option is:

the step S120 may include:

the step S130 may include:

In this embodiment, if the ue is a dual-connection terminal or a multi-connection terminal; the user equipment may establish a connection with multiple cells at the same time. In this embodiment, the step S120 may be a dual connectivity indication message, and control the ue to establish a connection with the first cell and the second cell simultaneously; the probe request message may be a dual connection request, such that the neighboring cell receives a connection request of the ue while maintaining a connection with the first cell, thereby establishing the connection request.

After the user equipment establishes connection with the second cell, the user equipment can normally perform data interaction with the user equipment, so that the service quality of the service provided by the second cell for the user equipment is detected.

In some embodiments, since the ue keeps dual connection all the time, power consumption of the ue may be too effective, thereby shortening the standby time. Therefore, the method further comprises:

and controlling the user equipment to disconnect from the first cell or the second cell according to the service quality of the second cell. That is, after detecting the service quality of the service provided by the second cell, the first cell may continue to select the first cell or the second cell as the camping cell of the user equipment according to the service quality, which is equivalent to disconnecting the connection with the second cell if the connection between the user equipment and the first cell is maintained, and at this time, the first cell is the camping cell. And if the connection between the user equipment and the second cell is kept, disconnecting the connection with the first cell, wherein the second cell is the resident cell.

In this embodiment, the method further includes:

In this embodiment, the first cell sends first data to the second cell, the second cell forwards the first data to the user equipment, and the user equipment sends second data to the second cell after receiving the second data, where the second data may be data obtained after the user equipment receives the first data; and retransmitting the second data to the first cell. The second cell may compare the first data with the second data to determine an error rate, or may measure the quality of service of the user equipment in the second cell according to the reception time of the second data, or the like.

Of course, the second data may also be the acknowledgement indication or the non-acknowledgement indication, which indicates that the user equipment has not correctly received the data of the first data. Thus, after receiving the second data, the first cell may consider the quality of service currently provided by the second cell for the user equipment.

In a specific implementation process, the first data may also be data sent by the first cell to the user equipment, and the user equipment receives the first data from the first cell and the second cell at the same time; then, the user equipment compares the data respectively received from the two cells to form various information such as error rate, time of arrival and the like, detects the service quality of the service provided by the second cell, and then respectively sends the second data representing the service quality to the second cell, or directly sends the second data representing the service quality to the first cell.

In short, there are various ways for the first cell to acquire the quality of service of the second cell, and the present invention is not limited to any of the above.

As shown in fig. 2, the present embodiment provides a cell handover method, including:

step S210: receiving a detection request message sent by a first cell; wherein the probe request message is sent by the first cell when detecting that the user equipment meets the cell switching condition;

step S220: establishing connection with the user equipment according to the detection request message;

step S230: performing data interaction with the user equipment through the connection to obtain the service quality of the second cell for providing service for the user equipment; wherein the service quality is used for controlling the switching of the user equipment from a first cell to a second cell; the second cell is a neighbor cell of the first cell.

The cell switching method described in this embodiment may be a method applied to a second base station forming a second cell.

In this embodiment, the second cell receives the probe request message sent by the first cell. The message composition and action of the probe request message can be referred to the aforementioned cell switching method.

In step S220, since the second cell may establish a connection with the ue when receiving the probe request message, in step S230, data interaction with the ue for qos probing is performed to detect qos that the second cell can provide for the ue, for example, in step S230, the second cell and the ue transmit a probe packet, and information that the transmission delay, the error rate, and the like corresponding to the probe packet can reflect qos is detected according to transmission of the probe packet, so that qos that the second cell can provide for the ue can be easily detected. The service quality may be used in any of the second cell, the user equipment, or the like, and it is determined whether to formally handover the user equipment to the second cell. Specifically, how to select the camping cell of the second cell according to the service quality of the service provided by the second cell for the user equipment may refer to the corresponding parts of the embodiments, and will not be repeated here.

There are multiple ways of detecting the quality of service provided by the second cell to the user equipment, and two optional ways are provided as follows:

the first alternative is:

the step S210 may include:

the step S220 may include:

In this embodiment, the second cell receives the temporary handover of the ue according to the handover trigger message. In a specific implementation, the handover trigger message may further include flag information of the ue, so as to identify whether the ue currently handed in to the second cell is a normal handover or a temporary handover.

In some embodiments, the handover trigger message further carries a handover duration of the temporary handover;

the method further comprises the following steps:

In this embodiment, the second cell may detect the service quality by itself or obtain the service quality from the user equipment through data interaction with the user equipment, but when the second cell reaches the handover duration, the second cell selects to leave the user equipment in the second cell continuously or switch the user equipment back to the first cell, so as to select the current resident cell of the user equipment.

If the final selection of the camping cell of the user equipment is performed by the first cell, at this time, the method further includes:

In this way, the first cell will obtain the quality of service that the second cell detects itself or that the second cell receives from the user equipment.

In a second manner, the step S210 may include:

receiving a dual-connection request sent by the first cell;

the step S220 may include:

In this embodiment, if the ue is a multi-connection terminal, the ue can establish a connection with two or more cells simultaneously, and in this embodiment, the second cell establishes a connection with the ue in step S220 according to the dual-connection request received by the second cell from the first cell, so as to facilitate subsequent data interaction, so as to implement detection of quality of service provided by the second cell for the ue.

In some embodiments, the method further comprises:

receiving first data sent by the first cell;

sending the first data to the user equipment;

receiving second data returned by the user equipment based on the first data;

Here, an implementation manner of a first cell, a second cell and a user equipment, where three parties perform data interaction to obtain quality of service of the second cell is provided, and specific implementation is not limited to this manner, and specific reference may be made to corresponding parts of the foregoing embodiments, and no repetition is made here.

As shown in fig. 3, the present embodiment provides a cell handover method, including:

step S310: receiving a detection command message sent by a first cell, wherein the detection command message is sent when user equipment meets a cell switching condition;

step S320: according to the detection command message, establishing connection with a second cell which enables the user equipment to meet the cell switching condition;

step S330: performing data interaction with the second cell through the connection to obtain the service quality of the second cell for providing service for the user equipment; wherein the service quality is used for controlling the switching of the user equipment from a first cell to a second cell; the second cell is a neighbor cell of the first cell.

The cell switching method in this embodiment may be a cell switching method applied to a user equipment.

In this embodiment, before the ue is formally handed over to the second cell, the ue receives a probe command message sent when the handover condition is met, after the probe command message is received in step S320, the ue establishes a connection with the second cell, and performs data interaction with the second cell through the connection in step S330, so as to obtain the service quality of the service provided by the second cell for the ue, thereby facilitating the first cell, the second cell, or the ue to determine whether to formally hand over to the second cell according to the service quality of the second cell, and a phenomenon directly performs handover according to the handover condition, resulting in finding that the service quality provided by the second cell is poor after the ue is handed over to the second cell.

In some embodiments, the step S310 may include:

receiving a temporary handover command message sent by the first cell;

the step S320 may include:

In this embodiment, the establishing of the connection between the ue and the second cell includes temporarily switching from the first cell to the second cell, and when it is detected that the quality of service of the second cell does not meet the requirement, switching back to the first cell to ensure that the ue obtains a good enough quality of service.

Further, the temporary handover command message carries a handover duration for controlling the temporary handover;

the method further comprises the following steps:

In this embodiment, the ue may continue to stay in the second cell during self-selection according to the detected service quality of the second cell, so that the second cell formally becomes the camping cell of the ue, or returns to the first cell, and continues to use the first cell as its camping cell.

In some embodiments, the method further comprises:

In this embodiment, a camped cell is selected as a first cell for the ue, and in order to facilitate the first cell to obtain the qos of the second cell, the ue sends qos information representing the qos to the first cell.

In other embodiments, the S310 may include:

receiving a dual-connection indication message sent by the first cell;

the step S320 may include:

In this embodiment, the ue may be a multi-connection terminal and may establish a connection with a first cell and a second cell at the same time, and in this embodiment, the ue may establish a connection with the first cell and the second cell at the same time, so that data interaction between the ue and the first cell is facilitated, and thus the quality of service provided by the second cell for the ue is detected.

Specifically, the method further comprises:

In this embodiment, the data structure of the first data and the second data may refer to the corresponding embodiments described above, and in this embodiment, in short, the quality of service provided by the second cell to the user equipment may be detected simply through the interaction between the first data and the second data.

As shown in fig. 4, the present embodiment provides a base station, where the base station is a first base station forming a first cell, and the base station includes:

a determining unit 110, configured to determine whether a ue currently camped in a first cell meets a cell switching condition;

a first sending unit 120, configured to send a probe command message to the ue when the ue meets a cell handover condition;

a second sending unit 130, configured to send a probe request message to a second cell that enables the ue to satisfy the cell switching condition;

In this embodiment, the base station is a base station forming a first cell, and is equivalent to a source base station of the user equipment.

The determining unit 110 may correspond to a processor or a processing circuit within the base station. The processor can comprise a Central Processing Unit (CPU), a Digital Signal Processor (DSP), a programmable array (PLC), an Application Processor (AP), a microprocessor MCU or other processors. The processing circuitry may comprise an application specific integrated circuit ASIC or the like.

The processor or the processing circuit may implement the above-mentioned determination function by an instruction of a predetermined instruction.

The first sending unit 120 and the second sending unit 130 may correspond to a communication interface within the base station. In contrast, the second sending unit 130 corresponds to a communication interface between the first base station and a second base station forming a second cell, for example, an X2 interface. The first sending unit 120 may correspond to an air interface for the first base station to communicate with the user equipment.

The first base station can start a second cell to establish connection with the user equipment through the sending of the detection request message and the detection command message, and perform data interaction, so as to obtain the service quality provided by the second cell for the user equipment, and finally select the first cell or the second cell as the resident cell of the user equipment by various network elements or communication entities in communication systems such as a first bear, the second cell or the user equipment and the like according to the service quality, instead of directly switching the user equipment to the second cell when the user equipment meets the switching condition by the second cell, thereby avoiding the problem that the second cell cannot provide sufficient service quality for the user equipment due to the switching.

In some embodiments, the first sending unit 120 is specifically configured to send a temporary handover command message to the ue; wherein the temporary handover command message is used to trigger the user equipment to temporarily handover from the first cell to the second cell; the second sending unit 130 is specifically configured to send a handover trigger message carrying a detection flag to the second cell; the detection mark is used for triggering the second cell to accept the cell temporary switching of the user equipment and to perform data interaction with the user equipment.

In this embodiment, the first base station controls the ue to temporarily switch from the first cell to the second cell by sending the temporary handover command message and the handover trigger message, and prompts the ue to establish a connection with the second cell in a temporary handover manner.

Further, the first base station further includes:

The first receiving unit, which may also correspond to a communication interface in the first base station, may receive the quality of service information from the user equipment or the second cell.

The selecting unit, which may correspond to the aforementioned processor or processing circuit, may select the first cell or the second cell as the final camping cell of the ue through execution of the instruction, and how to select the first cell or the second cell specifically may refer to method embodiments.

For example, the handover trigger message also carries a handover duration for controlling the temporary handover;

For another example, the temporary handover command message also carries a handover duration for controlling the temporary handover;

The first base station can simply and conveniently control the time length for the user equipment to be temporarily switched to the second cell through the setting of the switching time length.

In some embodiments, the first sending unit 120 is specifically configured to send a dual connectivity indication message to the user equipment when the user equipment meets a cell handover condition; the dual connectivity indication message is used for triggering the user equipment to establish a connection with the second cell;

the second sending unit 130 is specifically configured to send a dual connectivity request to the second cell; the dual connection request is used for triggering the connection establishment between the second cell and the user equipment while the user equipment keeps connected with the first cell.

In this embodiment, the first sending unit 120 and the second sending unit 130 send the dual connectivity indication message and the dual connectivity request respectively, so that the ue can be controlled to establish a connection with the second cell without disconnecting from the first cell, and the ue can also access to the second cell to perform data interaction with the second cell, so as to obtain the quality of service provided by the second cell for the ue.

Further, the second sending unit 130 is further configured to send the first data to the second cell; the first data is used for being sent to the user equipment by the second cell;

the determining unit 110 is further configured to determine, according to the second data, a quality of service provided by the second cell for the ue.

In this embodiment, the first base station performs data interaction with the second cell through the second sending unit 130 and the first receiving unit, and finally the determining unit 110 determines the quality of service provided by the second cell for the ue.

Further, the first base station further includes: and the control unit is used for controlling the user equipment to disconnect from the first cell or the second cell according to the service quality of the second cell.

The control unit herein may also correspond to the aforementioned processor or processing circuit, and in short, may control whether the ue maintains a connection with the first cell or maintains a connection with the second cell according to the quality of service, so as to implement cell handover of the ue.

As shown in fig. 5, the present embodiment provides a base station, where the base station is a second base station forming a second cell, and the base station includes:

a second receiving unit 210, configured to receive a probe request message sent by a first cell; wherein the probe request message is sent by the first cell when detecting that the user equipment meets the cell switching condition;

a first connection unit 220, configured to establish a connection with the ue according to the probe request message;

a first interacting unit 230, configured to perform data interaction with the ue through the connection, so as to obtain a quality of service for the ue provided by the second cell; wherein the service quality is used for controlling the switching of the user equipment from a first cell to a second cell; the second cell is a neighbor cell of the first cell.

In this embodiment, the second receiving unit 210, the first connecting unit 220 and the first interacting unit 230 may all correspond to different or the same communication interfaces in the second base station. The communication interface can perform data interaction through interaction with the first cell and the user equipment before the user equipment is formally switched to the second cell, and detect the service quality provided by the second cell for the user equipment, so that the user equipment can perform switching after determining that the second cell can provide reliable or high service quality, and the communication quality of the user equipment is improved.

In some embodiments, the second receiving unit 210 is specifically configured to receive a handover trigger message carrying a probe flag and sent by the first cell; the first connection unit 220 is configured to accept that the ue is temporarily handed over from the first cell to the second cell.

In this embodiment, the second base station receives the temporary handover of the ue to the second cell based on the handover trigger message, so as to establish a connection with the ue and perform data interaction.

Specifically, the handover trigger message also carries a handover duration of the temporary handover; the second base station further comprises: and the first switching unit is used for selecting to continue providing service for the user equipment according to the service quality or switching the user equipment back to the first cell when the switching duration of the user equipment temporarily switched to the second cell reaches the switching duration.

The first switching unit in this embodiment may also correspond to the processor or the processing circuit, and the detailed description of the processor or the processing circuit is provided in the foregoing section. The handover trigger message carries the handover duration, so that the duration of the temporary handover of the user equipment to the second cell can be controlled.

For another example, the second base station further includes:

In this embodiment, the second base station further sends the service quality information to the first cell, and the first cell (i.e., the first base station) selects a camping cell for the ue.

In some embodiments, the second receiving unit 210 is further configured to receive a dual connectivity request sent by the first cell; the first connection unit 220 is specifically configured to establish a connection with the user equipment while the user equipment maintains a connection with the first cell according to the dual connectivity request.

In this embodiment, the probe request message is the dual connectivity request; the second connection unit 220 establishes a connection with the user equipment based on the dual connection request.

In particular, as shown in the figure,

the second receiving unit 210 is further configured to receive first data sent by the first cell;

the first interaction unit 230 is further configured to send the first data to the user equipment, and receive second data returned by the user equipment based on the first data;

the second base station further comprises:

The third sending unit may also correspond to a communication interface in the second base station, and may be configured to receive information sent by the second cell, so as to complete detection of the quality of service of the service provided by the second cell for the user equipment.

As shown in fig. 6, the present embodiment provides a user equipment, including:

a third receiving unit 310, configured to receive a probe command message sent by a first cell, where the probe command message is sent when a user equipment meets a cell handover condition;

a second connection unit 320, configured to establish a connection with a second cell that enables the ue to satisfy the cell switching condition according to the probe command message;

a second interacting unit 330, configured to perform data interaction with the second cell through the connection, so as to obtain quality of service for the user equipment provided by the second cell; wherein the service quality is used for controlling the switching of the user equipment from a first cell to a second cell; the second cell is a neighbor cell of the first cell.

The user equipment may be any form of mobile communication terminal, such as a mobile phone, a tablet computer, or a wearable device.

In this embodiment, the third receiving unit 310, the second connecting unit 320, and the second interacting unit 330 may all correspond to a communication interface in the ue, and the communication interface may be used for data interaction with the first cell and/or the second cell. The communication interface may correspond to a transceiving antenna of the user equipment.

In this embodiment, before the user equipment is formally switched to the second cell, the connection with the second cell is established, and data interaction is performed through the established connection, so that at least one communication device in the communication system obtains the service quality of the service provided by the second cell for the user equipment, and finally, a resident cell is selected for the user equipment by using the service quality, so as to improve the communication quality of the user equipment.

In some embodiments, the third receiving unit 310 is configured to receive a temporary handover command message sent by the first cell;

the second connection unit 320 is configured to temporarily switch from the first cell to the second cell according to the temporary handover command message.

In the temporary handover command message received from the base station in this embodiment, the second connection unit 320 may temporarily establish a connection with the second cell, so as to facilitate data interaction with the second cell.

the user equipment further comprises:

The second switching unit may correspond to a processor or a processing circuit in the user equipment, and the detailed description of the processor or the processing circuit may refer to the foregoing embodiments. In summary, the processor or processing circuit in the user equipment can complete the functions of each functional unit in the user equipment.

For example, the user equipment further includes:

The fourth transmitting unit may correspond to a transmitting antenna of the user equipment, and may be configured to transmit information, for example, the qos information, to a base station.

Further, the third receiving unit 310 is specifically configured to receive a dual connectivity instruction message sent by the first cell; the second connection unit 320 is specifically configured to establish a connection with the second cell while maintaining the connection with the first cell according to the dual connectivity instruction message.

In this embodiment, the ue may be a multi-connection terminal, and may establish a connection with more than one cell simultaneously, and in this embodiment, the ue will establish a connection with a first cell and a second cell simultaneously, and interact data with the second cell, so as to detect the quality of service provided by the second cell for the ue.

Specifically, for example, the second interacting unit 320 is specifically configured to receive first data sent by the second cell; wherein the first data is sent by the first cell to the second cell; transmitting second data to the second cell based on the first data; the second data is used for the second cell to send to the first cell, and is used for the first cell to determine the quality of service provided by the second cell for the user equipment. In summary, the present embodiment provides a multi-connection ue, which can implement better handover and obtain better communication quality by formally performing connection establishment and data interaction between cell handovers and when a bronze drum meets an adjacent cell of a first cell.

Several specific examples are provided below according to any of the above embodiments:

example one:

this example provides a new cell handover procedure, before handover occurs, a base station may compare the service quality (e.g., voice quality) of the ue between the local cell and the neighboring cell, and use this information to assist handover decision, so as to improve the timeliness and accuracy of handover and the ue experience. The method comprises the following concrete steps:

step 1: the serving cell determines, according to a plurality of radio indicators (e.g., radio signal strength, interference level, radio packet loss rate, etc. of a certain ue), that the quality of service obtained by the ue is poor, and triggers handover preparation. Or, the serving cell may periodically trigger a particular user equipment to perform a handover. The serving cell here corresponds to the aforementioned first cell. The adjacent cell is the second cell.

Step 2: the serving cell selects a suitable neighbor cell as a handover target according to a measurement report reported by the user equipment terminal or historical information stored in the cell.

And step 3: how to determine the target neighbor cell from the history information: the serving cell may associate radio indicators such as a location angle, a signal strength, a Modulation and Coding Scheme (MCS), and a signal quality of the ue, and consider a target cell to which the ue having similar radio indicators in history is finally handed over.

And 4, step 4: the serving cell triggers the user equipment to temporarily access the target neighbor cell, receives the scheduling service of the neighbor cell, and obtains the service quality (e.g., voice quality) in the neighbor cell. The process of the ue temporarily accessing a certain neighbor cell is called quality probing, that is, the quality of service available in the neighbor cell is temporarily probed.

The quality detection can include at least the following two schemes:

the first method comprises the following steps:

the serving cell triggers the handover of the user equipment to the neighboring cell and indicates the handover as quality detection in the interactive flow. The subsequent steps can be divided into two schemes:

the serving cell may provide a timer during the interaction, and after the timer expires, the neighboring cell may trigger a reverse handover again to re-handover the ue to the original serving cell. Or, the neighboring cell may interact with the original serving cell, and if the original serving cell confirms, the neighboring cell continues to provide service for the user equipment.

If the terminal returns to the serving cell, the serving cell base station may determine whether the UE should be handed over based on the quality of service information. Meanwhile, the base station may repeat steps 2 to 4, and after obtaining the service quality of the ue in multiple cells, consider the target cell of the terminal as a whole.

The serving cell and neighbor cells may employ a default rule: if the service quality of the user equipment in the adjacent cell is good, the service is continuously carried out in the adjacent cell without returning to the service cell or any signaling interaction. If the service quality of the user equipment in the adjacent cell is not good, the terminal or the adjacent cell triggers a signaling process to inform the original serving cell to switch the terminal back.

And the second method comprises the following steps:

the serving cell initiates a dual connection establishment request to the neighboring cell, after negotiation between the serving cell and the neighboring cell, the serving cell forwards a downlink data packet to the user equipment and transmits the downlink data packet to the neighboring cell, and the neighboring cell also transmits the downlink data packet to the user equipment after receiving the downlink data packet. The user equipment receives signals of two cells simultaneously. For the uplink data packet, the user equipment simultaneously sends one copy to the original service cell and the adjacent cell, and the adjacent cell forwards the received data packet to the original service cell.

The method for evaluating the service quality of the adjacent cell comprises the following steps: the user equipment or the neighboring cell may score the service quality (e.g., voice quality or data service uploading and downloading rate) obtained by the user equipment in the neighboring cell, or record some wireless indicators related to the service quality, and finally send the score or the wireless indicator data to the serving cell, where the serving cell determines the service quality obtained by the user equipment in the neighboring cell.

Example two:

as shown in fig. 7, in this example, the serving cell finds that the ue is in poor radio coverage, and based on this event trigger, interacts handover preparation with the neighboring cell, as follows:

step S1: the eNB1 determines that a certain ue is subjected to uplink interference or reaches a handover threshold due to poor radio coverage; the eNB is an evolved base station and shall be abbreviated. The handover threshold reached here may be that the user equipment has reached the aforementioned handover condition.

Step S2: eNB1 sends a quality probe request message to eNB2, possibly carrying a quality probe timer. One specific implementation of the quality detection request message may be to continue using the existing handover request message, and add a field or a cause value therein, so as to be able to identify that the purpose of the handover is quality detection. The purpose of the quality detection timer is to indicate the duration of quality detection performed by the ue in the neighboring cell.

Step S3: the eNB1 issues a handover command message to the terminal, where the handover command message includes a field or cause value, which can identify that the purpose of the handover is quality detection. The handover command message may also carry a quality detection timer, so as to indicate the duration of the quality detection performed by the ue in the neighboring cell.

Step S4: after receiving the request, the ue enters the radio cell of eNB2 to detect the quality of service, and records the quality of service or a radio indicator related to the quality of service.

Step S5: controlling handover of the user equipment according to the quality of service.

At least 3 possible implementation schemes are provided in step S5:

step S5.1: after the quality probe timer expires, the ue returns to eNB1 and reports the quality of service of eNB2, and proceeds to step S6:

step S6: the eNB1 controls handover of the user equipment according to the quality of service.

Step S5.2: the eNB2 may record the quality of service for the user equipment and feed back to the eNB 1.

Step S5.3: if the ue obtains better quality of service at eNB2, the ue may choose to remain at eNB2 after the quality probe timer expires and not notify eNB1 through any signaling.

If the ue returns to eNB1, eNB1 may decide whether to perform handover based on the quality of service obtained by the ue at eNB 2.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all the functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A method of cell handover, comprising:

the detection request message is used for triggering the second cell to establish connection with the user equipment and performing data interaction of service quality detection so as to obtain the service quality provided by the second cell for the user equipment; the quality of service is used for controlling the switching of the user equipment from a first cell to a second cell; the second cell is a neighbor cell of the first cell;

when the user equipment meets the cell switching condition, sending a detection command message to the user equipment, wherein the detection command message comprises one of the following:

sending a temporary handover command message to the user equipment; the temporary handover command message is used for triggering the user equipment to temporarily handover from the first cell to the second cell;

sending a dual connectivity indication message to the user equipment; the dual connectivity indication message is used to trigger the ue to establish a connection with the second cell.

2. The method of claim 1, wherein the sending a probe request message to a second cell that satisfies the cell handover condition for the user equipment in response to sending a temporary handover command message to the user equipment comprises:

3. The method of claim 2,

the method further comprises the following steps:

4. The method of claim 2,

the switching trigger message also carries a switching duration for controlling the temporary switching;

5. The method of claim 2,

6. The method of claim 1, wherein the sending a probe request message to a second cell that enables the user equipment to satisfy the cell handover condition, in response to sending a dual connectivity indication message to the user equipment, comprises:

7. The method of claim 6,

the method further comprises the following steps:

8. The method of claim 7,

the method further comprises the following steps:

9. A method of cell handover, comprising:

performing data interaction with the user equipment through the connection to obtain the service quality of the second cell for providing service for the user equipment; wherein the service quality is used for controlling the switching of the user equipment from a first cell to a second cell; the second cell is a neighbor cell of the first cell;

the receiving of the probe request message sent by the first cell includes one of:

and receiving a dual-connection request sent by the first cell.

10. The method of claim 9, wherein the establishing a connection with the ue according to the probe request message in response to receiving the handover trigger message with the probe flag sent by the first cell comprises:

11. The method of claim 10,

the switching trigger message also carries the switching duration of the temporary switching;

the method further comprises the following steps:

12. The method of claim 10,

the method further comprises the following steps:

13. The method of claim 9, wherein the establishing a connection with the ue according to the probe request message in response to receiving the dual connectivity request sent by the first cell comprises:

14. The method of claim 13,

the method further comprises the following steps:

receiving first data sent by the first cell;

sending the first data to the user equipment;

receiving second data returned by the user equipment based on the first data;

15. A method of cell handover, comprising:

performing data interaction with the second cell through the connection to obtain the service quality of the second cell for providing service for the user equipment; wherein the service quality is used for controlling the switching of the user equipment from a first cell to a second cell; the second cell is a neighbor cell of the first cell;

wherein, the receiving of the probe command message sent by the first cell includes one of:

receiving a temporary handover command message sent by the first cell;

and receiving a dual-connection indication message sent by the first cell.

16. The method according to claim 15, wherein said establishing a connection with a second cell that enables the ue to satisfy the cell handover condition according to the probe command message in response to receiving the temporary handover command message sent by the first cell, comprises:

17. The method of claim 16,

the temporary switching command message carries a switching duration for controlling temporary switching;

the method further comprises the following steps:

18. The method of claim 16,

the method further comprises the following steps:

19. The method of claim 15, wherein the establishing a connection with a second cell that enables the ue to satisfy the cell handover condition according to the probe command message in response to receiving a dual connectivity indication message sent by the first cell comprises:

20. The method of claim 19,

the method further comprises the following steps:

21. A base station, wherein the base station is a first base station forming a first cell, comprising:

the first sending unit is specifically configured to send a temporary handover command message to the user equipment; wherein the temporary handover command message is used to trigger the user equipment to temporarily handover from the first cell to the second cell;

or, the first sending unit is specifically configured to send a dual connectivity instruction message to the user equipment; the dual connectivity indication message is used to trigger the ue to establish a connection with the second cell.

22. The base station of claim 21,

the second sending unit is specifically configured to send a handover trigger message carrying a probe flag to the second cell, where the second sending unit is specifically configured to send a temporary handover command message to the user equipment; the detection mark is used for triggering the second cell to accept the cell temporary switching of the user equipment and to perform data interaction with the user equipment.

23. The base station of claim 22,

the first base station further comprises:

24. The base station of claim 22,

25. The base station of claim 22,

26. The base station of claim 21,

the second sending unit, corresponding to the first sending unit, is specifically configured to send a dual connectivity instruction message to the user equipment, and the second sending unit is specifically configured to send a dual connectivity request to the second cell; the dual connection request is used for triggering the connection establishment between the second cell and the user equipment while the user equipment keeps connected with the first cell.

27. The base station of claim 26,

the second sending unit is further configured to send first data to the second cell; the first data is used for being sent to the user equipment by the second cell;

the first base station further comprises;

28. The base station of claim 27,

the first base station further comprises:

29. A base station, wherein the base station is a second base station forming a second cell, comprising:

a first interaction unit, configured to perform data interaction with the ue through the connection, so as to obtain a quality of service for the ue provided by a second cell; wherein the service quality is used for controlling the switching of the user equipment from a first cell to a second cell; the second cell is a neighbor cell of the first cell;

the second receiving unit is specifically configured to receive a handover trigger message carrying a probe flag and sent by the first cell; or, the second receiving unit is further configured to receive a dual connectivity request sent by the first cell.

30. The base station of claim 29,

the first connection unit, corresponding to the second receiving unit, is specifically configured to receive a handover trigger message carrying a probe flag sent by the first cell, and the first connection unit is configured to accept that the ue is temporarily handed over from the first cell to the second cell.

31. The base station of claim 30,

the second base station further comprises:

32. The base station of claim 30,

the second base station further comprises:

33. The base station of claim 29,

the first connection unit, corresponding to the second receiving unit, is further configured to receive a dual connectivity request sent by the first cell, and the first connection unit is specifically configured to establish a connection with the user equipment while the user equipment maintains a connection with the first cell according to the dual connectivity request.

34. The base station of claim 33,

the second receiving unit is further configured to receive first data sent by the first cell;

the second base station further comprises:

35. A user device, comprising:

a second interaction unit, configured to perform data interaction with the second cell through the connection, so as to obtain quality of service for the user equipment provided by the second cell; wherein the service quality is used for controlling the switching of the user equipment from a first cell to a second cell; the second cell is a neighbor cell of the first cell;

the third receiving unit is specifically configured to receive a temporary handover command message sent by the first cell; or, the third receiving unit is specifically configured to receive a dual connectivity instruction message sent by the first cell.

36. The user equipment of claim 35,

and a second connection unit, corresponding to the third receiving unit, configured to receive a temporary handover command message sent by the first cell, and configured to temporarily switch from the first cell to the second cell according to the temporary handover command message.

37. The user equipment of claim 36,

the user equipment further comprises:

38. The user equipment of claim 36,

the user equipment further comprises:

39. The user equipment of claim 35,

the second connection unit is specifically configured to establish a connection with the second cell while maintaining the connection with the first cell according to the dual connection indication message.

40. The user equipment of claim 39,

the second interaction unit is specifically configured to receive first data sent by the second cell; wherein the first data is sent by the first cell to the second cell; transmitting second data to the second cell based on the first data; the second data is used for the second cell to send to the first cell, and is used for the first cell to determine the quality of service provided by the second cell for the user equipment.