WO2018127002A1 - 一种小区切换方法、相关设备和系统 - Google Patents

一种小区切换方法、相关设备和系统 Download PDF

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Publication number
WO2018127002A1
WO2018127002A1 PCT/CN2017/119835 CN2017119835W WO2018127002A1 WO 2018127002 A1 WO2018127002 A1 WO 2018127002A1 CN 2017119835 W CN2017119835 W CN 2017119835W WO 2018127002 A1 WO2018127002 A1 WO 2018127002A1
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Prior art keywords
cell
user terminal
network side
side device
signal quality
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PCT/CN2017/119835
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English (en)
French (fr)
Inventor
张晨璐
岳然
李小龙
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维沃移动通信有限公司
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Publication of WO2018127002A1 publication Critical patent/WO2018127002A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a cell handover method, related device, and system.
  • the UE when the user equipment (UE) performs cell handover, the UE performs measurement reporting according to the measurement parameters configured by the source network side device, and the source network side device performs a determination process of the target cell based on the measurement result reported by the UE; Then, the source network side device initiates a handover preparation process to the target network side device corresponding to the target cell. After the target network side device handover preparation is completed, the source network side device sends a handover command to the UE, and the UE receives the handover command to the target network. The side device initiates an access to complete the cell handover.
  • the target network side device after the target network side device is determined, the handover preparation process is performed, so that there is a large delay between the measurement handover execution.
  • the embodiments of the present disclosure provide a cell handover method, a related device, and a system to solve the problem of measuring a large delay between handover executions.
  • an embodiment of the present disclosure provides a cell handover method, including:
  • an embodiment of the present disclosure provides a cell handover method, which is applied to a user terminal, and includes:
  • the air interface measurement result is used to determine the target cell in at least one candidate cell, where the at least one candidate cell is a source network device, and when the user terminal needs to perform cell handover, the user terminal is Selected cell.
  • an embodiment of the present disclosure provides a cell handover method, which is applied to a target network side device, and includes:
  • the cell of the target network side device is the target cell, performing cell handover of the user terminal;
  • the cell of the target network side device is a cell in the at least one candidate cell selected by the source network side device for the user terminal, and the target cell is an air interface measurement based on air interface measurement by the user terminal.
  • the result is determined, and the air interface measurement by the user terminal is performed based on a pre-handover command sent by the source network side device.
  • an embodiment of the present disclosure provides a source network side device, including:
  • An alternative cell selection module configured to select at least one candidate cell for the user terminal when determining that the user terminal needs to perform cell handover;
  • a first sending module configured to send a pre-handover preparation request to the network side device corresponding to the candidate cell
  • control module configured to control the user terminal to switch to the target cell according to a pre-handover preparation response returned by the network side device corresponding to the target cell, where the target cell is based on a result of the air interface measurement by the user terminal The selected cell in the candidate cell.
  • an embodiment of the present disclosure provides a user terminal, including:
  • the air interface measurement module is configured to perform air interface measurement when the user terminal needs to perform cell handover, and obtain an air interface measurement result
  • An access module configured to initiate an access to the target cell based on the air interface measurement result
  • the air interface measurement result is used to determine the target cell in at least one candidate cell, where the at least one candidate cell is a source network device, and when the user terminal needs to perform cell handover, the user terminal is Selected cell.
  • an embodiment of the present disclosure provides a target network side device, including:
  • a request receiving module configured to receive a pre-handover preparation request sent by the source network side device when the user terminal needs to perform cell handover;
  • a handover preparation module configured to perform handover preparation based on the pre-handover preparation request
  • An execution module configured to perform cell handover of the user terminal if a cell of the target network side device is a target cell
  • the cell of the target network side device is a cell in the at least one candidate cell selected by the source network side device for the user terminal, and the target cell is an air interface measurement based on air interface measurement by the user terminal.
  • the result is determined, and the air interface measurement by the user terminal is performed based on a pre-handover command sent by the source network side device.
  • an embodiment of the present disclosure provides a source network side device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor executing the The computer program implements the steps of the cell handover method as described in the first aspect.
  • an embodiment of the present disclosure provides a user terminal, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor executing the computer program The steps of the cell handover method as described in the second aspect are implemented.
  • an embodiment of the present disclosure provides a target network side device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor executing the The computer program implements the steps of the cell handover method as described in the third aspect.
  • an embodiment of the present disclosure provides a computer readable storage medium having stored thereon a computer program, the program being executed by a processor, implementing the steps of the cell switching method according to the first aspect.
  • an embodiment of the present disclosure provides a computer readable storage medium having stored thereon a computer program, the program being executed by a processor, implementing the steps of the cell switching method according to the second aspect.
  • the embodiment of the present disclosure provides a computer readable storage medium having stored thereon a computer program, the program being executed by a processor, implementing the steps of the cell switching method according to the third aspect.
  • the user terminal when determining that the user terminal needs to perform cell handover, selecting at least one candidate cell for the user terminal, and sending a pre-handover preparation request to the network side device corresponding to the candidate cell; a pre-handover preparation response returned by the network-side device corresponding to the cell, and controlling the user terminal to switch to the target cell, where the target cell is selected from the candidate cell based on a result of the air interface measurement by the user terminal Community. Since the handover preparation is performed by the candidate cell before the target cell is determined, the delay between the measurements to the handover execution can be reduced.
  • FIG. 1 is a structural diagram of a cell switching system to which some embodiments of the present disclosure are applicable;
  • FIG. 2 is a flowchart of a cell handover method according to some embodiments of the present disclosure
  • FIG. 3 is a flowchart of another cell handover method provided by some embodiments of the present disclosure.
  • FIG. 4 is a schematic diagram of signaling of a cell handover method according to an embodiment of the present disclosure with reference to FIG. 3;
  • FIG. 5 is a second schematic diagram of signaling of a cell handover method according to an embodiment of the present disclosure with reference to FIG. 3;
  • FIG. 5 is a second schematic diagram of signaling of a cell handover method according to an embodiment of the present disclosure with reference to FIG. 3;
  • FIG. 6 is a third schematic diagram of signaling of a cell handover method according to an embodiment of the present disclosure with reference to FIG. 3;
  • FIG. 7 is a fourth schematic diagram of signaling of a cell handover method according to an embodiment of the present disclosure with reference to FIG. 3;
  • FIG. 7 is a fourth schematic diagram of signaling of a cell handover method according to an embodiment of the present disclosure with reference to FIG. 3;
  • FIG. 8 is a flowchart of still another cell handover method according to some embodiments of the present disclosure.
  • FIG. 9 is a flowchart of still another cell handover method according to some embodiments of the present disclosure.
  • FIG. 10 is a structural diagram of a source network side device according to some embodiments of the present disclosure.
  • FIG. 11 is a second structural diagram of a source network side device according to some embodiments of the present disclosure.
  • FIG. 12 is a third structural diagram of a source network side device according to some embodiments of the present disclosure.
  • FIG. 13 is a fourth structural diagram of a source network side device according to some embodiments of the present disclosure.
  • FIG. 14 is a fifth structural diagram of a source network side device according to some embodiments of the present disclosure.
  • FIG. 15 is a structural diagram of a source network side device according to some embodiments of the present disclosure.
  • 16 is a structural diagram of a user terminal according to some embodiments of the present disclosure.
  • 17 is a second structural diagram of a user terminal according to some embodiments of the present disclosure.
  • FIG. 18 is a third structural diagram of a user terminal according to some embodiments of the present disclosure.
  • FIG. 19 is a fourth structural diagram of a user terminal according to some embodiments of the present disclosure.
  • FIG. 20 is a fifth structural diagram of a user terminal according to some embodiments of the present disclosure.
  • 21 is a structural diagram of a target network side device according to some embodiments of the present disclosure.
  • FIG. 22 is a second structural diagram of a target network side device according to some embodiments of the present disclosure.
  • FIG. 23 is a third structural diagram of a target network side device according to some embodiments of the present disclosure.
  • FIG. 24 is a structural diagram of another source network side device according to some embodiments of the present disclosure.
  • 25 is a structural diagram of another user terminal provided by some embodiments of the present disclosure.
  • FIG. 26 is a structural diagram of another target network side device according to some embodiments of the present disclosure.
  • FIG. 1 is a structural diagram of a cell switching system applicable to some embodiments of the present disclosure.
  • the user terminal 11 the source network side device 12 , and the plurality of target network side devices 13 are included.
  • the user terminal 11 can be, for example, a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a mobile internet device (MID), or A terminal device such as a wearable device, it should be noted that the specific type of the user terminal 11 is not limited in the embodiment of the present disclosure.
  • both the source network side device 12 and the target network side device 13 may be a Transmission Reception Point (TRP), or may be a base station, and the base station may be a macro station, such as Long Term Evolution (Long). Evolved Node B (eNB) in the Term Evolution (LTE) system, New Radio (NR), Node B (NB), etc. in the 5G system. Either the source network side device 12 and the target network side device 13 may be an access point (AP). Further, in the embodiment of the present disclosure, the foregoing system may further include a core network device 14, such as a Mobility Management Entity (MME). In addition, in the embodiment of the present disclosure, the target network side device 13 may be understood as a network side device corresponding to the candidate cell.
  • TRP Transmission Reception Point
  • MME Mobility Management Entity
  • MME Mobility Management Entity
  • the target network side device 13 may be understood as a network side device corresponding to the candidate cell.
  • the specific types of the source network side device 12 and the target network side device 13 are not limited in the embodiment of the present disclosure, and the specific functions of the user terminal 11, the source network side device 12, and the target network side device 13 will pass. The following various embodiments are specifically described.
  • FIG. 2 is a flowchart of a method for cell handover according to some embodiments of the present disclosure. The method is applied to a source network side device, as shown in FIG. 2, and includes the following steps:
  • Step 201 When determining that the user terminal needs to perform cell handover, select at least one candidate cell for the user terminal, and send a pre-handover preparation request to the network side device corresponding to the candidate cell.
  • the method may be applied to the source network side device of the user terminal, where the source network side device may be the network side device currently accessed by the user terminal, or may be understood as the network side device to which the serving cell of the user terminal belongs.
  • the determining that the user terminal needs to perform the cell handover may be determined by the source network side device based on the measurement result reported by the user terminal, for example, when the measurement result reported by the user terminal meets the preset condition, the step 201 is triggered, such as the measurement by the user terminal.
  • the serving cell receiving reference power (RSRP) or the RSRQ (Reference Signal Receiving Quality) is less than a certain threshold, or the RSRP or RSRQ of the serving cell is less than a certain threshold, and the RSRP of the neighboring cell or RSRQ is greater than another threshold B.
  • the foregoing measurement result may also be reported to the source network side device after the user terminal determines that the preset condition is met.
  • the foregoing selecting at least one candidate cell for the user terminal may be at least one cell selected according to the measurement result of the user terminal, or the neighboring cell list saved by the source network side device, in the neighboring cell of the serving cell of the user terminal.
  • the selection may be a multiple selection, and each time the selection is made, a pre-handover preparation request is sent to the network side device corresponding to the candidate cell.
  • the network side device may perform a handover preparation, and the network side device sends a pre-handover preparation response to the source network side device after completing the handover preparation.
  • Step 202 Control the user terminal to switch to the target cell according to a pre-handover preparation response returned by the network side device corresponding to the target cell, where the target cell is based on the result of the air interface measurement by the user terminal.
  • the cell selected in the candidate cell is based on the result of the air interface measurement by the user terminal.
  • the target cell is a target cell selected from the candidate cells based on the result of the air interface measurement by the user terminal, and the target cell selected by the user terminal in the at least one candidate cell based on the air interface measurement result, or may be
  • the user terminal reports the air interface measurement result to the source network side device, and the source network side device selects the target cell in the at least one candidate cell based on the air interface measurement result.
  • the result of the air interface measurement by the user terminal may be that the user terminal automatically performs the measurement according to the pre-configuration, and may be periodically reported to the source network side device, or may be performed according to the measurement command sent by the source network side device.
  • the network side device corresponding to the candidate cell is preparing for handover, and the user terminal is performing, when the pre-handover preparation request is sent to the network side device corresponding to the candidate cell, and the user terminal is controlled to switch to the target cell.
  • the measurement of the air interface that is, the air interface measurement of the user terminal and the handover preparation of the network side device corresponding to the candidate cell are parallel, thereby reducing the delay of the cell handover, so as to improve the performance of the user terminal and the network side device.
  • the user terminal when determining that the user terminal needs to perform cell handover, selecting at least one candidate cell for the user terminal, and sending a pre-handover preparation request to the network side device corresponding to the candidate cell; a pre-handover preparation response returned by the network-side device corresponding to the cell, and controlling the user terminal to switch to the target cell, where the target cell is selected from the candidate cell based on a result of the air interface measurement by the user terminal Community. Since the handover preparation is performed by the candidate cell before the target cell is determined, the delay between the measurements to the handover execution can be reduced.
  • FIG. 3 is a flowchart of another method for cell handover according to some embodiments of the present disclosure.
  • the method is applied to a source network side device, as shown in FIG. 3, and includes the following steps:
  • Step 301 Receive a first measurement result reported by the user terminal.
  • the first measurement result meets a preset condition for triggering cell handover, and the first measurement result includes at least one of the following content:
  • Signal energy information of the serving cell of the user terminal Signal energy information of the serving cell of the user terminal, signal quality information of the serving cell, signal energy information of a neighboring cell of the serving cell, and signal quality information of the neighboring cell.
  • the signal energy information may be RSRP
  • the signal quality information may be RSRQ.
  • the preset condition may be that the serving cell RSRP or RSRQ is smaller than a certain threshold, or the RSRP or RSRQ of the serving cell is smaller than a certain threshold, and the RSRP or RSRQ of the neighboring cell is greater than another threshold B.
  • the signal energy information of the serving cell of the user terminal includes signal energy information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the serving cell;
  • the signal quality information of the serving cell includes signal quality information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the serving cell;
  • the signal energy information of the neighboring cell of the serving cell includes signal energy information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the neighboring cell;
  • the signal quality information of the neighboring cell of the serving cell includes signal quality information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the neighboring cell.
  • the user terminal may perform measurement on one or more wide beams or one or more narrow beams of the serving cell, and one or more wide beams or one or more narrow beams on the neighboring cells of the serving cell. Measurements are taken and reported based on these measurements.
  • Step 302 Determine, according to the first measurement result, that the user terminal needs to perform cell handover.
  • the source network side device After the source network side device obtains the foregoing first measurement result, it may be determined that the user terminal needs to perform cell handover.
  • step 301 and step 302 are optional.
  • the source network side device may determine that the user terminal performs cell handover based on its own load condition.
  • Step 303 When determining that the user terminal needs to perform cell handover, select at least one candidate cell for the user terminal, and send a pre-handover preparation request to the network side device corresponding to the candidate cell.
  • the step of selecting at least one candidate cell for the user terminal includes:
  • the first measurement result includes signal energy information of the neighboring cell and/or signal quality information of the neighboring cell, based on signal energy information of the neighboring cell and/or signal quality information of the neighboring cell, Selecting the at least one candidate cell in a neighboring cell of the serving cell; or
  • the first measurement result does not include signal energy information of the serving cell and/or signal quality information of the serving cell, predicting direction information of the user terminal, based on the direction information in a pre-stored neighboring area
  • the at least one candidate cell is selected in the list.
  • the neighboring cell may be one or more cells adjacent to the serving cell.
  • the selecting the at least one candidate cell in the neighboring cell of the serving cell according to the signal energy information of the neighboring cell and/or the signal quality information of the neighboring cell may be based on the energy information of the neighboring cell signal and And/or signal quality information, selecting one or more cells with the best signal in the neighboring cell as the at least one candidate cell.
  • the foregoing determining the direction information of the user terminal, and selecting the at least one candidate cell in the pre-stored neighbor list based on the direction information may be: selecting at least the direction of the user terminal that matches the direction of the user terminal in the neighboring cell list.
  • An candidate cell for example, the direction information of the user terminal is indicated in the northwest direction, so that the source network side device can select at least one candidate cell in the northwest direction. Since the candidate cell is selected based on the direction information of the user terminal, the candidate cell is more suitable for the user terminal to improve the transmission performance of the user terminal handover.
  • the direction of the foregoing predicted user terminal may be determined based on a beam of data transmitted by the user terminal, because each beam of the source network side device has a fixed direction, thereby determining a beam transmitted by the user terminal, and the user terminal may be determined.
  • the direction may be determined based on a beam of data transmitted by the user terminal, because each beam of the source network side device has a fixed direction, thereby determining a beam transmitted by the user terminal, and the user terminal may be determined. The direction.
  • Step 304 Send a pre-handover command to the user terminal, where the pre-handover command includes at least one of the following contents:
  • the air interface monitors measurement parameters, first switching conditions, and resource aging information.
  • the air interface monitoring measurement parameter may include: an air interface monitoring measurement cell and/or a measurement configuration parameter, where the air interface monitoring measurement cell includes the serving cell and the neighboring cell, and the neighboring cell includes the at least one candidate cell And the measurement configuration parameter includes at least one of a measurement frequency, a measurement period, and a measurement reporting condition.
  • the air interface monitoring measurement cell may be an identifier of a cell that is measured by the user terminal for performing air interface measurement, for example, configuring the user terminal to perform air interface measurement on the serving cell and the at least one candidate cell, or configuring the user terminal to the serving cell
  • the air interface measurement and the like are performed on the neighboring cell, and the like.
  • the air interface monitoring measurement cell is not included.
  • the user terminal performs air interface measurement on the serving cell and the neighboring cell by default.
  • the user terminal may perform measurement on the neighboring cell and the serving cell according to the measurement parameter determined before the flow.
  • the user terminal can perform accurate and effective measurement to save power consumption of the user terminal.
  • the first switching condition includes at least one of the following:
  • the signal energy or signal quality of a narrow beam of the best signal energy or signal quality in the narrow beam measured by the user equipment in the serving cell is less than a first threshold, and/or the location measured by the user terminal
  • the signal energy or signal quality of a narrow beam of the narrowest beam in the neighboring cell signal is greater than the second threshold
  • the weighted average of the signal energy or signal quality of the first predetermined number of narrow beams in the narrow beam and the signal quality of the narrowest beam measured by the user terminal in the serving cell is less than a third threshold, or And a weighted average of signal energy or signal quality of the second predetermined number of narrow beams in the narrow beam in the neighboring cell measured by the user equipment is greater than a fourth threshold;
  • a weighted average of signal energy or signal quality of all narrow beams measured by the user equipment in the serving cell is less than a fifth threshold, and/or all neighboring cells measured by the user terminal are narrow
  • the weighted average of the signal energy or signal quality of the beam is greater than the sixth threshold
  • a weighted average of signal energy or signal quality of all wide beams measured by the user equipment in the serving cell is less than a seventh threshold, and/or all wide beams of the neighboring cells measured by the user equipment The weighted average of the signal energy or signal quality is greater than the eighth threshold;
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam measured by the user terminal in the serving cell is less than a ninth threshold, and/or the measured by the user terminal
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam in the adjacent cell signal is greater than the tenth threshold
  • the weighted average of the signal energy or the signal quality of the third predetermined number of wide beams in the wide beam, or the signal quality in the wide beam, measured by the user terminal in the serving cell is less than the eleventh threshold, or And/or, the weighted average of the signal energy or signal quality of the fourth predetermined number of wide beams in the wide beam in the neighboring cell measured by the user terminal is greater than the twelfth threshold .
  • the multiple thresholds mentioned above may be preset by the user terminal, or the network side device is pre-configured to the user terminal.
  • the plurality of preset numbers may be preset by the user terminal, or the network side device is pre-configured to the user terminal.
  • the wide beam may be a beam whose lobe is wider than a lobe of a certain frequency beam (for example, a high frequency beam), and the narrow beam may be a lobe of a lobe and a certain frequency beam (for example, a high frequency beam).
  • the user equipment may select a suitable target cell by using the first switching condition, or the user terminal may report the air interface measurement result to the source network side device after the air interface measurement result returns to the first switching condition, and the source network side device selects the target cell, that is, the foregoing
  • a switching condition can be understood as one of the triggering conditions for reporting the air interface measurement result of the user terminal.
  • the first handover condition may also be that different first handover conditions exist for different candidate cells, or may also be first handover conditions for all candidate cells.
  • the first handover condition may be that the signal energy or signal quality of a narrow beam with the best signal energy or signal quality in the narrow beam measured by the user equipment in the serving cell is lower than the first threshold.
  • a predetermined threshold (delta), wherein the lower than here may be a first threshold minus a signal of a narrow beam with the best signal energy or signal quality in the narrow beam measured by the user terminal in the serving cell
  • the difference between the energy or the signal quality is less than or equal to a preset threshold (delta), and/or a narrow beam of the narrowest beam in the neighboring cell signal measured by the user terminal or the signal beam having the best signal quality
  • the signal energy or signal quality is above a certain threshold (delta) than the second threshold.
  • the conditions of the foregoing other thresholds may also be determined by using a preset threshold (delta), which is not described herein.
  • the resource aging information indicates an effective time that the at least one candidate cell reserves resources for the terminal.
  • the above effective time can be achieved to save network equipment resources.
  • the pre-handover preparation request includes context information and/or resource reservation time of the user terminal.
  • the context information of the user terminal may be the capability information of the user terminal and/or the security-related information (for example, a supported security algorithm, etc.), and the foregoing resource reservation time may be that the network side device corresponding to the candidate cell is the current possibility.
  • the existing switching resource reserves the length of the network. After the time of the aging information is reached, the target network side device that is not selected as the target cell can actively release the reserved resources for the user terminal to save the network side device. Resources.
  • the sending by the network side device corresponding to the candidate cell, the pre-handover preparation request, includes:
  • the network side device corresponding to the candidate cell may be configured to send a pre-handover preparation request through a directly connected interface (for example, an X2 interface) or a core network device (for example, an MME).
  • a directly connected interface for example, an X2 interface
  • a core network device for example, an MME
  • the determining, before determining that the user terminal needs to perform cell handover, the step of selecting at least one candidate cell for the user terminal, and sending a pre-handover preparation request to the network side device corresponding to the candidate cell also includes:
  • one or more of the previously selected one of the candidate cells may be deleted, and the release resource request is sent to the network side device corresponding to the deleted one or more cells.
  • At least one candidate cell selected by the source network side device may be updated during the air interface measurement process, that is, a new candidate cell is added or deleted in the at least one candidate cell. And sending a release resource request to the target network side device of the deleted one or more cells, so as to save network device resources.
  • At least one candidate cell selected in step 303 is a cell of the network side device 2 and the network side device 3, and the source network side device is a network side device 1, and the newly added candidate cell is a network side device.
  • the cell of 4, and the network side devices communicate with each other through the MME.
  • the candidate cell of the network side device 3 may be deleted, where the maintenance decision may be to update the at least one candidate cell based on the air interface measurement result; and after the handover decision
  • the network side device 2 is requested to release the resource, that is, the candidate cell of the network side device 4 is selected as the target cell.
  • the step 304 is optional, that is, in the embodiment, the step 304 is not performed, for example, the user terminal performs measurement according to the preset measurement parameter, and may also be based on the advance.
  • the configured measurement parameters are reported.
  • the execution order of step 304 and step 303 is not limited, for example, it may be performed synchronously, or it may be performed sequentially.
  • Step 305 Control the user terminal to switch to the target cell according to a pre-handover preparation response returned by the network side device corresponding to the target cell, where the target cell is based on a result of the air interface measurement by the user terminal.
  • the cell selected in the candidate cell is based on a result of the air interface measurement by the user terminal.
  • the step of controlling the user terminal to switch to the target cell according to the pre-handover preparation response returned by the network side device corresponding to the target cell includes:
  • the target cell is determined by the user terminal based on the air interface measurement result of the air interface measurement by the user terminal;
  • the target cell can be determined by the user terminal or the source network side device.
  • the user terminal selecting the target cell in the at least one candidate cell may be selected based on the air interface measurement result of the user terminal, for example, selecting the cell with the best signal as the target cell, or may also be combined with the foregoing first switch.
  • the condition is selected, or may be selected in combination with a preset condition of the user terminal. Of course, it may be selected in combination with the priority level of each candidate cell, which is not limited in this embodiment of the present disclosure.
  • Since the user terminal can select the target cell power consumption of the source network side device can be reduced.
  • selecting the target cell by the source network side device can also reduce the power consumption of the user terminal.
  • For the mode in which the source network side device selects the target cell refer to the manner in which the user terminal selects the target cell, which is not described herein.
  • the handover decision may be decided by the user terminal, that is, the handover decision process 1 in FIG. 5, the user terminal sends a handover notification to the source network side device; or In the decision-making process 2, the user terminal measures the report to the source network-side device, and the source network-side device makes a decision, and sends a handover command to the user terminal.
  • the step is that the user terminal selects at least one candidate cell, and after sending the pre-handover preparation request to the network side device corresponding to the candidate cell, the network side device corresponding to the target cell returns Before the step of pre-switching the preparation response and controlling the user terminal to switch to the target cell, the method further includes:
  • the pre-handover preparation response message indicates that the network-side device that has sent the pre-handover preparation response message has completed the handover preparation.
  • the network-side device corresponding to the candidate cell has reserved resources for the user terminal, and establishes a location.
  • a data channel of the source network side device is used, and the data channel is used for data transmission of the user terminal.
  • the network side device corresponding to the candidate cell can determine whether the user terminal is allowed to access, for example, whether to allow access according to the context of the user terminal, and if so, the user terminal
  • the related data is reserved, such as a C-RNTI (Cell Radio Network Temporary Identifier) and an uplink data bearer, where the uplink data bearer may be an uplink data S1 bearer.
  • the network side device corresponding to the candidate cell may also establish a data channel of the candidate target cell to the source network side device for use in subsequent data forwarding, where the data channel may be an X2 data channel, that is, an alternate cell corresponding to the A data channel directly connected between the network side device and the source network side device.
  • the foregoing may send the pre-handover preparation response message to the user terminal, where the source network side device sends a corresponding pre-handover preparation response message to the user equipment, and the corresponding pre-handover preparation response message is sent to the user equipment.
  • the pre-handover preparation response message may be forwarded by the source network side device; or the source network side device may receive the pre-handover preparation response message sent by the network side device corresponding to the multiple or all the candidate cells, and send the message to the user terminal.
  • it may be a pre-handover preparation response message generated by the source network side device based on the pre-handover preparation response message sent by the network side device corresponding to each candidate cell, or may be the network side corresponding to each candidate cell by the source network side device.
  • the pre-handover preparation response message sent by the device is combined and sent to the user terminal.
  • the user terminal is notified that one or more candidate cells have completed handover preparation due to the pre-handover preparation response message sent to the user terminal, so that the user terminal can select the target cell to perform cell handover.
  • the pre-handover preparation response message sent to the user terminal includes response information of at least one candidate cell, where the response information of each candidate cell includes random access information, configuration configured for the user terminal. At least one of a parameter, a handover access priority information, and a second handover condition; or the pre-handover preparation response message sent to the user terminal includes response information of at least one candidate cell and handover access of each candidate cell Priority information, where the response information of each candidate cell includes at least one of random access information, configuration parameters, and second handover conditions allocated for the user terminal;
  • the pre-handover preparation response message sent by the network side device corresponding to the candidate cell includes at least one of the following contents:
  • Random access information, configuration parameters, and second handover conditions assigned to the user terminal are assigned to the user terminal.
  • the random access information and configuration parameters allocated by the user terminal may be random access information and configuration parameters allocated by the candidate cell to the user terminal, for example, if the source network device receives an alternate cell corresponding to each other.
  • the pre-handover preparation response message sent by the network side device is sent to the user terminal, so that the pre-handover preparation response message includes the response information of an candidate cell. If it is a unified transmission, the pre-handover preparation response message includes response information of a plurality of candidate cells.
  • the user terminal may notify the user terminal of the response information of the at least one candidate cell by using the foregoing pre-handover preparation response message, so that the user terminal may reasonably select the target cell or perform reporting according to the parameter configuration included in the response information, so as to improve the cell handover. s efficiency.
  • the random access information included in the response information of each candidate cell includes: a user identifier allocated by the candidate cell to the user terminal;
  • the random access information included in the pre-handover preparation response message sent by the network side device corresponding to the candidate cell includes: a user identifier allocated by the candidate cell corresponding to the network side device corresponding to the candidate cell to the user terminal.
  • the user identifier may be random access related information such as a C-RNTI used for access identification.
  • the configuration parameter included in the response information of each candidate cell includes: a parameter allocated by the candidate cell to the user terminal to be used as a protocol layer configuration of the user terminal;
  • the configuration parameter included in the pre-handover preparation response message sent by the network-side device corresponding to the candidate cell includes: the candidate cell corresponding to the network-side device corresponding to the candidate cell is used as the user terminal
  • the parameters for the protocol layer configuration includes: the candidate cell corresponding to the network-side device corresponding to the candidate cell is used as the user terminal
  • the parameters for the protocol layer configuration includes: the candidate cell corresponding to the network-side device corresponding to the candidate cell is used as the user terminal.
  • the method further includes:
  • the handover access priority information of each candidate cell is determined according to the resource preparation situation of each candidate cell and the air interface measurement result of the user terminal.
  • the source network side device prioritizes according to the resource preparation situation of each candidate cell and the measurement monitoring situation of the user terminal, for example, according to the resource status.
  • the second handover condition of each candidate cell includes resource aging information indicating a resource reservation time of the candidate cell, and further includes at least one of the following:
  • the signal energy or signal quality of a narrow beam whose signal energy or signal quality is best in the narrow beam in the serving cell is smaller than the thirteenth threshold, and/or the device measured by the user terminal
  • the signal energy or signal quality of a narrow beam with the best signal energy or signal quality in the narrow beam in the selected cell is greater than the thirteenth threshold
  • the weighted average of the signal energy or signal quality of the fifth predetermined number of narrow beams in the narrow beam, which is measured by the user terminal in the serving cell, is less than the fourteenth threshold, or/and, The weighted average of the signal energy or signal quality of the sixth predetermined number of narrow beams in the narrow beam in the candidate cell measured by the user terminal is greater than the fifteenth threshold;
  • a weighted average of signal energy or signal quality of all narrow beams measured by the user equipment in the serving cell is less than a thirteenth threshold, and/or all narrow beams of the candidate cell measured by the user equipment
  • the weighted average of the signal energy or signal quality is greater than the seventeenth threshold
  • a weighted average of signal energy or signal quality of all wide beams measured by the user terminal in the serving cell is less than an eighteenth threshold, and/or all wide beams of the candidate cell measured by the user terminal
  • the weighted average of the signal energy or signal quality is greater than the nineteenth threshold
  • the signal energy or signal quality of a wide beam with a signal energy or signal quality of the wide beam measured by the user terminal in the serving cell is less than a twentieth threshold, and/or the device measured by the user terminal
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam in the selected cell is greater than the twenty-first threshold
  • the weighted average of the signal energy or signal quality of the seventh predetermined number of wide beams in the wide beam measured by the user terminal in the serving cell is less than the twenty-second threshold, or/and The weighted average of the signal energy or signal quality of the eighth predetermined number of wide beams in the wide beam in the candidate cell measured by the user terminal is greater than the thirteenth threshold;
  • the pre-handover command includes the first handover condition, and the air interface measurement result of the user terminal satisfies the second handover condition of the one or more candidate cells, the user terminal follows the one or more The second handover condition of the candidate cell is reported or the target cell is selected.
  • the resource aging information may be used to notify the user terminal of the resource aging time reserved for the user terminal in the handover preparation process, such as a timer duration. After the timeout, the user terminal cannot select the candidate cell. Selected as the target cell. After the network-side device corresponding to the candidate cell reaches the time limit of the resource, the target network-side device that is not selected as the target cell can actively release the resources reserved for the user terminal, so as to save resources of the network-side device.
  • the user terminal follows the one or more devices.
  • the second handover condition of the selected cell is reported or the target cell is selected. That is, when the two conditions exist at the same time, the second handover condition is taken as the second handover condition is determined by the network side device corresponding to the candidate cell, so that the user terminal can more easily select the appropriate cell when performing cell handover. Switching to improve the business performance of the user terminal.
  • the step of controlling the user terminal to switch to the target cell according to the pre-handover preparation response returned by the network side device corresponding to the target cell including:
  • the result of the air interface measurement by the user terminal indicates that the multiple candidate cells satisfy the second handover condition, and receives the pre-handover preparation response sent by the network side device corresponding to the multiple candidate cells, according to the Switching access priority information of multiple candidate cells, selecting a target cell, and controlling the user terminal to switch to the target cell; or
  • the candidate cell is used as the candidate cell.
  • the target cell receives the pre-handover preparation response returned by the network side device corresponding to the target cell, and controls the user terminal to switch to the target cell.
  • the target cell is selected according to the handover access priority information of each candidate cell, so that the candidate cell with the highest priority is selected as the target cell, Improve service performance after user terminal handover.
  • the handover procedure when the target cell does not complete the handover preparation, the handover procedure is suspended, so that no additional operations are required, and after the target cell completes the handover preparation, the handover may be directly performed to reduce the network side device. Power consumption.
  • the method further includes:
  • the network side device that is not the target cell in the at least one candidate cell may be sent a release resource request, so that the network side device that receives the request is released as the user terminal.
  • the reserved resources are used to save network equipment resources. There are two ways to send, one is through the interface between the network side devices, and the other is through the core network device.
  • the source network side device is the network side device 1
  • the network side device 2 and the network side device 3 are network side devices corresponding to the candidate cell
  • the network side device 1 and the network side device 2 and the network side Device 3 has a direct connection interface, such as an X2 interface.
  • the following steps are included:
  • the user terminal measures the report, for example, when the user terminal measures the serving cell signal energy (RSRP) or/and the signal quality (RSRQ) or/and the neighbor cell signal energy (RSRP) or the signal quality (RSRQ) meets the preset condition A. , trigger the process, and send a measurement report to the serving cell.
  • RSRP serving cell signal energy
  • RSRQ signal quality
  • RSRP neighbor cell signal energy
  • RSSQ signal quality
  • the network side device 1 After receiving the measurement report, the network side device 1 performs a handover pre-judgment to determine an candidate target cell.
  • the network side device 1 sends a pre-handover command to the user terminal.
  • the network side device 1 transmits a pre-handover preparation request to the network side device 2 and the network side device 3.
  • the network side device 2 and the network side device 3 perform access control and resource preparation, that is, perform handover preparation.
  • the user terminal performs air interface measurement.
  • the network side device 1 After receiving the pre-handover preparation response sent by the network side device 2 and/or the network side device 3, the network side device 1 sends a corresponding pre-handover preparation response to the user terminal.
  • the user terminal and the network side device 1 can make a handover decision, and then the resource release indication can be sent to the network side device 2 or the network side device 3.
  • the source network side device is the network side device 1
  • the network side device 2 and the network side device 3 are network side devices corresponding to the candidate cell
  • the network side device 1 and the network side device 2 and the network side The device 3 needs to be relayed by the MME through the relevant signaling connection.
  • the following steps are included:
  • the user terminal measures the report, for example, when the user terminal measures the serving cell signal energy (RSRP) or/and the signal quality (RSRQ) or/and the neighbor cell signal energy (RSRP) or the signal quality (RSRQ) meets the preset condition A. , trigger the process, and send a measurement report to the serving cell.
  • RSRP serving cell signal energy
  • RSRQ signal quality
  • RSRP neighbor cell signal energy
  • RSSQ signal quality
  • the network side device 1 After receiving the measurement report, the network side device 1 performs a handover pre-judgment to determine an candidate target cell.
  • the network side device 1 sends a pre-handover command to the user terminal.
  • the network side device 1 sends a pre-handover preparation request to the MME.
  • the MME sends a pre-handover preparation request to the network side device 2 and the network side device 3.
  • the network side device 2 and the network side device 3 perform access control and resource preparation, that is, perform handover preparation.
  • the user terminal performs air interface measurement.
  • the network side device 1 After receiving the pre-handover preparation response sent by the network side device 2 and/or the network side device 3, the network side device 1 sends a corresponding pre-handover preparation response to the user terminal.
  • the user terminal and the network side device 1 can make a handover decision. Then, the MME sends a resource release indication to the network side device 2 or the network side device 3 to save resources of the network side device.
  • FIG. 8 is a flowchart of still another method for cell handover according to some embodiments of the present disclosure. The method is applied to a user terminal. As shown in FIG. 8, the method includes the following steps:
  • Step 801 Perform air interface measurement when the user terminal needs to perform cell handover, and obtain an air interface measurement result.
  • Step 802 Initiate access to the target cell based on the air interface measurement result.
  • the air interface measurement result is used to determine the target cell in at least one candidate cell, where the at least one candidate cell is a source network device, and when the user terminal needs to perform cell handover, the user terminal is Selected cell.
  • the method further includes: before the step of receiving a pre-handover command sent by the source network side device, when the user terminal needs to perform the cell handover, the method further includes:
  • the source network side device determines whether the user terminal needs to perform cell handover, and when the first measurement result meets a preset condition for triggering cell handover Determining whether the user terminal needs to perform cell handover;
  • the first measurement result includes at least one of the following contents:
  • Signal energy information of the serving cell of the user terminal Signal energy information of the serving cell of the user terminal, signal quality information of the serving cell, signal energy information of a neighboring cell of the serving cell, and signal quality information of the neighboring cell.
  • the signal energy information of the serving cell of the user terminal includes signal energy information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the serving cell;
  • the signal quality information of the serving cell includes signal quality information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the serving cell;
  • the signal energy information of the neighboring cell of the serving cell includes signal energy information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the neighboring cell;
  • the signal quality information of the neighboring cell of the serving cell includes signal quality information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the neighboring cell.
  • the at least one candidate cell includes:
  • the source network side device is based on signal energy information of the neighboring cell and/or the neighboring cell Signal quality information, at least one candidate cell selected in a neighboring cell of the serving cell;
  • the source network side device predicts direction information of the user terminal, based on the direction information At least one candidate cell selected in the pre-saved neighbor list.
  • the step of performing air interface measurement to obtain an air interface measurement result when the user terminal needs to perform cell handover includes:
  • the device When the user terminal needs to perform cell handover, the device sends a pre-handover command to the user terminal, performs air interface measurement based on the pre-handover command, and obtains an air interface measurement result;
  • the pre-switching command includes at least one of the following contents:
  • the air interface monitors measurement parameters, first switching conditions, and resource aging information.
  • the air interface monitoring measurement parameter includes: an air interface monitoring measurement cell and/or a measurement configuration parameter, where the air interface monitoring measurement cell includes the serving cell and the neighboring cell, and the neighboring cell includes the at least one device The cell is selected, and the measurement configuration parameter includes at least one of a measurement frequency, a measurement period, and a measurement reporting condition.
  • the first switching condition includes at least one of the following:
  • the signal energy or signal quality of a narrow beam of the best signal energy or signal quality in the narrow beam measured by the user equipment in the serving cell is less than a first threshold, and/or the location measured by the user terminal
  • the signal energy or signal quality of a narrow beam of the narrowest beam in the neighboring cell signal is greater than the second threshold
  • the weighted average of the signal energy or signal quality of the first predetermined number of narrow beams in the narrow beam and the signal quality of the narrowest beam measured by the user terminal in the serving cell is less than a third threshold, or And a weighted average of signal energy or signal quality of the second predetermined number of narrow beams in the narrow beam in the neighboring cell measured by the user equipment is greater than a fourth threshold;
  • a weighted average of signal energy or signal quality of all narrow beams measured by the user equipment in the serving cell is less than a fifth threshold, and/or all neighboring cells measured by the user terminal are narrow
  • the weighted average of the signal energy or signal quality of the beam is greater than the sixth threshold
  • a weighted average of signal energy or signal quality of all wide beams measured by the user equipment in the serving cell is less than a seventh threshold, and/or all wide beams of the neighboring cells measured by the user equipment The weighted average of the signal energy or signal quality is greater than the eighth threshold;
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam measured by the user terminal in the serving cell is less than a ninth threshold, and/or the measured by the user terminal
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam in the adjacent cell signal is greater than the tenth threshold
  • the weighted average of the signal energy or the signal quality of the third predetermined number of wide beams in the wide beam, or the signal quality in the wide beam, measured by the user terminal in the serving cell is less than the eleventh threshold, or And/or, the weighted average of the signal energy or signal quality of the fourth predetermined number of wide beams in the wide beam in the neighboring cell measured by the user terminal is greater than the twelfth threshold .
  • the resource aging information indicates an effective time that the at least one candidate cell reserves resources for the terminal.
  • the method further includes:
  • the side device selects the target cell from the candidate cells.
  • the method further includes:
  • the pre-handover preparation response message indicates that the network side device corresponding to the corresponding candidate cell has completed handover preparation.
  • the pre-handover preparation response message includes response information of at least one candidate cell, where the response information of each candidate cell includes random access information, configuration parameters, and handover access allocated to the user terminal. At least one of priority information and second switching condition; or
  • the pre-handover preparation response message includes response information of at least one candidate cell and handover access priority information of each candidate cell, where the response information of each candidate cell includes random access allocated to the user terminal At least one of information, configuration parameters, and second switching conditions
  • the random access information in the response information of the candidate cell includes: a user identifier allocated by the candidate cell to the user terminal.
  • the configuration parameter included in the response information of the candidate cell includes: the candidate cell is allocated to the user terminal as a parameter used by the user terminal to perform protocol layer configuration.
  • the handover access priority information of each candidate cell is a resource of each candidate cell after the source network side device receives the pre-handover preparation response message sent by the network side device corresponding to each candidate cell.
  • the preparation situation and the air interface measurement result of the user terminal are determined.
  • the second handover condition of each candidate cell includes resource aging information indicating a resource reservation time of the candidate cell, and further includes at least one of the following:
  • the signal energy or signal quality of a narrow beam whose signal energy or signal quality is best in the narrow beam in the serving cell is smaller than the thirteenth threshold, and/or the device measured by the user terminal
  • the signal energy or signal quality of a narrow beam with the best signal energy or signal quality in the narrow beam in the selected cell is greater than the thirteenth threshold
  • the weighted average of the signal energy or signal quality of the fifth predetermined number of narrow beams in the narrow beam, which is measured by the user terminal in the serving cell, is less than the fourteenth threshold, or/and, The weighted average of the signal energy or signal quality of the sixth predetermined number of narrow beams in the narrow beam in the candidate cell measured by the user terminal is greater than the fifteenth threshold;
  • a weighted average of signal energy or signal quality of all narrow beams measured by the user equipment in the serving cell is less than a thirteenth threshold, and/or all narrow beams of the candidate cell measured by the user equipment
  • the weighted average of the signal energy or signal quality is greater than the seventeenth threshold
  • a weighted average of signal energy or signal quality of all wide beams measured by the user terminal in the serving cell is less than an eighteenth threshold, and/or all wide beams of the candidate cell measured by the user terminal
  • the weighted average of the signal energy or signal quality is greater than the nineteenth threshold
  • the signal energy or signal quality of a wide beam with a signal energy or signal quality of the wide beam measured by the user terminal in the serving cell is less than a twentieth threshold, and/or the device measured by the user terminal
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam in the selected cell is greater than the twenty-first threshold
  • the weighted average of the signal energy or signal quality of the seventh predetermined number of wide beams in the wide beam measured by the user terminal in the serving cell is less than the twenty-second threshold, or/and The weighted average of the signal energy or signal quality of the eighth predetermined number of wide beams in the wide beam in the candidate cell measured by the user terminal is greater than the thirteenth threshold;
  • the pre-handover command includes the first handover condition, and the air interface measurement result of the user terminal satisfies the second handover condition of the one or more candidate cells, the user terminal follows the one or more The second handover condition of the candidate cell is reported or the target cell is selected.
  • the step of initiating access to the target cell based on the air interface measurement result includes:
  • the cell that meets the second handover condition in the at least one candidate cell has completed handover preparation, selecting a target cell according to handover access priority information of each candidate cell, and initiating the target cell Access; or
  • the method further includes:
  • the air interface measurement result is used by: the source network side device adding a new candidate cell to the at least one candidate cell, and sending a pre-handover preparation request to the new candidate cell; and/or
  • the air interface measurement result is used by: the source network side device, deleting one or more cells in the at least one candidate cell, and sending a release resource request to the network side device corresponding to the deleted one or more cells;
  • the air interface measurement result includes a result of performing air interface measurement by the user terminal on the serving cell and the neighboring cell of the serving cell.
  • the present embodiment is an implementation manner of the user terminal corresponding to the embodiment described with reference to FIG. 2 and the embodiment described with reference to FIG. 3-7.
  • FIG. 9 is a flowchart of still another method for cell handover according to some embodiments of the present disclosure. The method is applied to a target network side device, as shown in FIG. 9, and includes the following steps:
  • Step 901 Receive a pre-handover preparation request sent by the source network side device when the user terminal needs to perform cell handover.
  • Step 902 Perform handover preparation based on the pre-handover preparation request.
  • Step 903 Perform a cell handover of the user terminal if the cell of the target network side device is a target cell.
  • the cell of the target network side device is a cell in the at least one candidate cell selected by the source network side device for the user terminal, and the target cell is an air interface measurement based on air interface measurement by the user terminal.
  • the result is determined, and the air interface measurement by the user terminal is performed based on a pre-handover command sent by the source network side device.
  • the at least one candidate cell includes:
  • the source network side device is based on the neighboring cell Signal energy information and/or signal quality information of the neighboring cell, at least one candidate cell selected from neighbor cells of the serving cell;
  • the source network side device predicts direction information of the user terminal, based on The direction information is from at least one candidate cell selected from the pre-stored neighbor list.
  • the target cell is a target cell selected by the user terminal from the at least one candidate cell based on an air interface measurement result obtained by performing air interface measurement by the user terminal;
  • the target cell is a cell that is selected by the source network side device from the at least one candidate cell based on the air interface measurement result obtained by the user terminal to perform air interface measurement by the user terminal.
  • the method also includes:
  • the pre-handover preparation response message includes at least one of the following contents:
  • Random access information, configuration parameters, and second handover conditions assigned to the user terminal are assigned to the user terminal.
  • the random access information includes: a user identifier allocated by the target network side device to the user terminal.
  • the configuration parameter includes: a parameter allocated by the target network side device to the user terminal to be used as a protocol layer configuration by the user terminal.
  • the second handover condition includes resource aging information of the resource reservation time of the target network side device, and further includes at least one of the following content:
  • the signal energy or signal quality of a narrow beam of the best signal energy or signal quality in the narrow beam measured by the user terminal in the serving cell is less than a thirteenth threshold, and/or measured by the user terminal
  • the signal energy or signal quality of a narrow beam in a narrow beam in the cell corresponding to the target network side device is greater than the thirteenth threshold
  • a weighted average of signal energy or signal quality of a fifth predetermined number of narrow beams of signal energy or signal quality that is measured by the user terminal in the serving cell is less than a fourteenth threshold, or And a weighted average of signal energy or signal quality of the sixth predetermined number of narrow beams in the narrow beam in the cell corresponding to the target network side device measured by the user equipment is greater than The fifteenth threshold;
  • a weighted average of signal energy or signal quality of all narrow beams measured by the user terminal in the serving cell is less than a thirteenth threshold, and/or the target network side device measured by the user terminal
  • the weighted average of the signal energy or signal quality of all narrow beams of the corresponding cell is greater than the seventeenth threshold
  • a weighted average of signal energy or signal quality of all wide beams measured by the user terminal in the serving cell is less than an eighteenth threshold, and/or the target network side device measured by the user terminal
  • the weighted average of the signal energy or signal quality of all the wide beams of the corresponding cell is greater than the nineteenth threshold
  • the signal energy or signal quality of a wide beam with a signal energy or signal quality of the wide beam measured by the user terminal in the serving cell is less than a twentieth threshold, and/or measured by the user terminal
  • the signal energy or signal quality of a wide beam with a signal energy or a signal quality of the wide beam in the cell corresponding to the target network side device is greater than the 21st threshold;
  • the weighted average of the signal energy or signal quality of the seventh predetermined number of wide beams of the signal beam or the signal quality of the wide beam in the serving cell measured by the user terminal is less than the twenty-second threshold, or And a weighted average of signal energy or signal quality of the eighth predetermined number of wide beams in the wide beam in the cell corresponding to the target network side device measured by the user equipment Greater than the twenty-third threshold.
  • the pre-handover preparation request includes context information and/or resource reservation time of the user terminal.
  • the step of preparing for handover based on the pre-handover preparation request includes:
  • the step of receiving the pre-handover preparation request sent by the source network side device includes:
  • the method further includes:
  • the core network device receives the release resource request sent by the source network side device, and releases the resource reserved for the user terminal.
  • the present embodiment is an implementation manner of a target network side device corresponding to the embodiment described with reference to FIG. 2 and the embodiment described with reference to FIG. 3-7, and a specific implementation manner thereof may refer to the implementation described with reference to FIG. 2 .
  • the descriptions of the embodiments described with reference to FIG. 3-7 are the same, and the same beneficial effects are achieved. In order to avoid redundant description, details are not described herein again.
  • FIG. 10 is a structural diagram of a source network side device according to some embodiments of the present disclosure, which can implement the embodiment described in FIG. 2 and the cell switching method in the embodiment described with reference to FIG. 3-7. Details and achieve the same effect.
  • the source network side device 1000 includes: an alternative cell selection module 1001, a first sending module 1002, and a control module 1003, where:
  • the candidate cell selection module 1001 is configured to select at least one candidate cell for the user terminal when determining that the user terminal needs to perform cell handover;
  • the first sending module 1002 is configured to send a pre-handover preparation request to the network side device corresponding to the candidate cell.
  • the control module 1003 is configured to control the user terminal to switch to the target cell according to a pre-handover preparation response returned by the network side device corresponding to the target cell, where the target cell is based on the result of the air interface measurement by the user terminal. A cell selected from the candidate cells.
  • the source network side device 1000 further includes:
  • the first receiving module 1004 is configured to receive the first measurement result reported by the user terminal;
  • the handover determining module 1005 is configured to: when the first measurement result meets a handover trigger condition, determine that the user terminal needs to perform cell handover;
  • the first measurement result meets a preset condition for triggering cell handover, and the first measurement result includes at least one of the following content:
  • Signal energy information of the serving cell of the user terminal Signal energy information of the serving cell of the user terminal, signal quality information of the serving cell, signal energy information of a neighboring cell of the serving cell, and signal quality information of the neighboring cell.
  • the signal energy information of the serving cell of the user terminal includes signal energy information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the serving cell;
  • the signal quality information of the serving cell includes signal quality information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the serving cell;
  • the signal energy information of the neighboring cell of the serving cell includes signal energy information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the neighboring cell;
  • the signal quality information of the neighboring cell of the serving cell includes signal quality information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the neighboring cell.
  • the candidate cell selection module 1001 is specifically configured to: if the first measurement result includes signal energy information of the neighboring cell and/or signal quality information of the neighboring cell, based on the signal of the neighboring cell And the energy information and/or the signal quality information of the neighboring cell, selecting the at least one candidate cell in a neighboring cell of the serving cell; or
  • the first measurement result does not include signal energy information of the serving cell and/or signal quality information of the serving cell, predicting direction information of the user terminal, based on the direction information in a pre-stored neighboring area
  • the at least one candidate cell is selected in the list.
  • the source network side device further includes:
  • the second sending module 1006 is configured to send a pre-handover command to the user terminal, where the pre-handover command includes at least one of the following contents:
  • the air interface monitors measurement parameters, first switching conditions, and resource aging information.
  • the air interface monitoring measurement parameter includes: an air interface monitoring measurement cell and/or a measurement configuration parameter, where the air interface monitoring measurement cell includes the serving cell and the neighboring cell, and the neighboring cell includes the at least one device The cell is selected, and the measurement configuration parameter includes at least one of a measurement frequency, a measurement period, and a measurement reporting condition.
  • the first switching condition includes at least one of the following:
  • the signal energy or signal quality of a narrow beam of the best signal energy or signal quality in the narrow beam measured by the user equipment in the serving cell is less than a first threshold, and/or the location measured by the user terminal
  • the signal energy or signal quality of a narrow beam of the narrowest beam in the neighboring cell signal is greater than the second threshold
  • the weighted average of the signal energy or signal quality of the first predetermined number of narrow beams in the narrow beam and the signal quality of the narrowest beam measured by the user terminal in the serving cell is less than a third threshold, or And a weighted average of signal energy or signal quality of the second predetermined number of narrow beams in the narrow beam in the neighboring cell measured by the user equipment is greater than a fourth threshold;
  • a weighted average of signal energy or signal quality of all narrow beams measured by the user equipment in the serving cell is less than a fifth threshold, and/or all neighboring cells measured by the user terminal are narrow
  • the weighted average of the signal energy or signal quality of the beam is greater than the sixth threshold
  • a weighted average of signal energy or signal quality of all wide beams measured by the user equipment in the serving cell is less than a seventh threshold, and/or all wide beams of the neighboring cells measured by the user equipment The weighted average of the signal energy or signal quality is greater than the eighth threshold;
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam measured by the user terminal in the serving cell is less than a ninth threshold, and/or the measured by the user terminal
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam in the adjacent cell signal is greater than the tenth threshold
  • the weighted average of the signal energy or the signal quality of the third predetermined number of wide beams in the wide beam, or the signal quality in the wide beam, measured by the user terminal in the serving cell is less than the eleventh threshold, or And/or, the weighted average of the signal energy or signal quality of the fourth predetermined number of wide beams in the wide beam in the neighboring cell measured by the user terminal is greater than the twelfth threshold .
  • the resource aging information indicates an effective time that the at least one candidate cell reserves resources for the terminal.
  • control module 1003 is specifically configured to receive, by the user terminal, a decision result of selecting a target cell from the candidate cell, and according to a pre-handover preparation response returned by the network side device corresponding to the target cell, Controlling that the user terminal switches to the target cell, where the target cell is determined by the user terminal based on an air interface measurement result of air interface measurement by the user terminal;
  • the source network side device 1000 further includes:
  • the response message receiving module 1007 is configured to receive a pre-handover preparation response message sent by the network side device corresponding to the candidate cell;
  • the response message sending module 1008 is configured to send a pre-handover preparation response message to the user terminal.
  • the pre-handover preparation response message sent to the user terminal includes response information of at least one candidate cell, where the response information of each candidate cell includes random access information, configuration configured for the user terminal. At least one of a parameter, a handover access priority information, and a second handover condition; or the pre-handover preparation response message sent to the user terminal includes response information of at least one candidate cell and handover access of each candidate cell Priority information, where the response information of each candidate cell includes at least one of random access information, configuration parameters, and second handover conditions allocated for the user terminal;
  • the pre-handover preparation response message sent by the network side device corresponding to the candidate cell includes at least one of the following contents:
  • Random access information, configuration parameters, and second handover conditions assigned to the user terminal are assigned to the user terminal.
  • the random access information in the response information of the candidate cell includes: a user identifier allocated by the candidate cell to the user terminal;
  • the random access information included in the pre-handover preparation response message sent by the network side device corresponding to the candidate cell includes: a user identifier allocated by the candidate cell corresponding to the network side device corresponding to the candidate cell to the user terminal.
  • the configuration parameter in the response information of the candidate cell includes: a parameter allocated by the candidate cell to the user terminal to be used as a protocol layer configuration by the user terminal;
  • the configuration parameter included in the pre-handover preparation response message sent by the network-side device corresponding to the candidate cell includes: the candidate cell corresponding to the network-side device corresponding to the candidate cell is used as the user terminal
  • the parameters for the protocol layer configuration includes: the candidate cell corresponding to the network-side device corresponding to the candidate cell is used as the user terminal
  • the parameters for the protocol layer configuration includes: the candidate cell corresponding to the network-side device corresponding to the candidate cell is used as the user terminal.
  • the source network side device 1000 further includes:
  • the priority determining module 1009 is configured to determine handover access priority information of each candidate cell according to the resource preparation situation of each candidate cell and the air interface measurement result of the user terminal.
  • the second handover condition of each candidate cell includes resource aging information indicating a resource reservation time of the candidate cell, and further includes at least one of the following:
  • the signal energy or signal quality of a narrow beam whose signal energy or signal quality is best in the narrow beam in the serving cell is smaller than the thirteenth threshold, and/or the device measured by the user terminal
  • the signal energy or signal quality of a narrow beam with the best signal energy or signal quality in the narrow beam in the selected cell is greater than the thirteenth threshold
  • the weighted average of the signal energy or signal quality of the fifth predetermined number of narrow beams in the narrow beam, which is measured by the user terminal in the serving cell, is less than the fourteenth threshold, or/and, The weighted average of the signal energy or signal quality of the sixth predetermined number of narrow beams in the narrow beam in the candidate cell measured by the user terminal is greater than the fifteenth threshold;
  • a weighted average of signal energy or signal quality of all narrow beams measured by the user equipment in the serving cell is less than a thirteenth threshold, and/or all narrow beams of the candidate cell measured by the user equipment
  • the weighted average of the signal energy or signal quality is greater than the seventeenth threshold
  • a weighted average of signal energy or signal quality of all wide beams measured by the user terminal in the serving cell is less than an eighteenth threshold, and/or all wide beams of the candidate cell measured by the user terminal
  • the weighted average of the signal energy or signal quality is greater than the nineteenth threshold
  • the signal energy or signal quality of a wide beam with a signal energy or signal quality of the wide beam measured by the user terminal in the serving cell is less than a twentieth threshold, and/or the device measured by the user terminal
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam in the selected cell is greater than the twenty-first threshold
  • the weighted average of the signal energy or signal quality of the seventh predetermined number of wide beams in the wide beam measured by the user terminal in the serving cell is less than the twenty-second threshold, or/and The weighted average of the signal energy or signal quality of the eighth predetermined number of wide beams in the wide beam in the candidate cell measured by the user terminal is greater than the thirteenth threshold;
  • the pre-handover command includes the first handover condition, and the air interface measurement result of the user terminal satisfies the second handover condition of the one or more candidate cells, the user terminal follows the one or more The second handover condition of the candidate cell is reported or the target cell is selected.
  • control module 1003 is specifically configured to: if the result of the air interface measurement by the user terminal, that the multiple candidate cells meet the second handover condition, and receive the network corresponding to the multiple candidate cells And the pre-handover preparation response sent by the side device, selecting a target cell according to the handover access priority information of the multiple candidate cells, and controlling the user terminal to switch to the target cell; or
  • the candidate cell is used as the candidate cell.
  • the target cell receives the pre-handover preparation response returned by the network side device corresponding to the target cell, and controls the user terminal to switch to the target cell.
  • the pre-handover preparation request includes context information and/or resource reservation time of the user terminal.
  • the first sending module 1002 is specifically configured to send, by using an interface directly connected between the network side devices, a pre-handover preparation request to the network side device corresponding to the candidate cell; or
  • the candidate cell selection module 1001 is specifically configured to: when determining that the user terminal needs to perform cell handover, select at least one candidate cell for the user terminal, and send the pre-process to the network side device corresponding to the candidate cell. Switching preparation request;
  • the source network side device 1000 further includes:
  • the fifth sending module 1010 is configured to send, by using an interface between the network side devices, a release resource request to a network side device corresponding to the candidate cell other than the target cell in the candidate cell; or
  • the sixth sending module 1011 is configured to send, by using the core network device, a release resource request to the network side device corresponding to the candidate cell other than the target cell in the candidate cell.
  • the source network side device 1000 may be the source network side device in any of the method embodiments in the embodiments of the present disclosure, and the network side device source in the method embodiment in this disclosure Any of the foregoing embodiments may be implemented by the source network side device 1000 in the embodiment, and achieve the same beneficial effects, and details are not described herein again.
  • FIG. 16 is a structural diagram of a user terminal according to some embodiments of the present disclosure, which can implement the details of the cell switching method in the embodiment described with reference to FIG. 8 and achieve the same effect.
  • the user terminal 1600 includes: an air interface measurement module 16:1, and an access module 1602, where:
  • the air interface measurement module 1601 is configured to perform air interface measurement when the user terminal needs to perform cell handover, and obtain an air interface measurement result;
  • the access module 1602 is configured to initiate an access to the target cell based on the air interface measurement result.
  • the air interface measurement result is used to determine the target cell in at least one candidate cell, where the at least one candidate cell is a source network device, and when the user terminal needs to perform cell handover, the user terminal is Selected cell.
  • the user terminal 1600 further includes:
  • the first measurement reporting module 1603 is configured to report the first measurement result to the source network side device, where the source network side device determines whether the user terminal needs to perform cell handover, and satisfies the first measurement result. Determining whether the user terminal needs to perform cell handover when the preset condition of the cell handover is triggered; the first measurement result includes at least one of the following contents:
  • Signal energy information of the serving cell of the user terminal Signal energy information of the serving cell of the user terminal, signal quality information of the serving cell, signal energy information of a neighboring cell of the serving cell, and signal quality information of the neighboring cell.
  • the signal energy information of the serving cell of the user terminal includes signal energy information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the serving cell;
  • the signal quality information of the serving cell includes signal quality information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the serving cell;
  • the signal energy information of the neighboring cell of the serving cell includes signal energy information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the neighboring cell;
  • the signal quality information of the neighboring cell of the serving cell includes signal quality information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the neighboring cell.
  • the at least one candidate cell includes:
  • the source network side device is based on signal energy information of the neighboring cell and/or the neighboring cell Signal quality information, at least one candidate cell selected in a neighboring cell of the serving cell;
  • the source network side device predicts direction information of the user terminal, based on the direction information At least one candidate cell selected in the pre-saved neighbor list.
  • the air interface measurement module is configured to: when the user terminal needs to perform cell handover, send a pre-handover command to the user terminal, perform air interface measurement based on the pre-handover command, and obtain an air interface measurement result;
  • the pre-switching command includes at least one of the following contents:
  • the air interface monitors measurement parameters, first switching conditions, and resource aging information.
  • the air interface monitoring measurement parameter includes: an air interface monitoring measurement cell and/or a measurement configuration parameter, where the air interface monitoring measurement cell includes the serving cell and the neighboring cell, and the neighboring cell includes the at least one device The cell is selected, and the measurement configuration parameter includes at least one of a measurement frequency, a measurement period, and a measurement reporting condition.
  • the first switching condition includes at least one of the following:
  • the signal energy or signal quality of a narrow beam of the best signal energy or signal quality in the narrow beam measured by the user equipment in the serving cell is less than a first threshold, and/or the location measured by the user terminal
  • the signal energy or signal quality of a narrow beam of the narrowest beam in the neighboring cell signal is greater than the second threshold
  • the weighted average of the signal energy or signal quality of the first predetermined number of narrow beams in the narrow beam and the signal quality of the narrowest beam measured by the user terminal in the serving cell is less than a third threshold, or And a weighted average of signal energy or signal quality of the second predetermined number of narrow beams in the narrow beam in the neighboring cell measured by the user equipment is greater than a fourth threshold;
  • a weighted average of signal energy or signal quality of all narrow beams measured by the user equipment in the serving cell is less than a fifth threshold, and/or all neighboring cells measured by the user terminal are narrow
  • the weighted average of the signal energy or signal quality of the beam is greater than the sixth threshold
  • a weighted average of signal energy or signal quality of all wide beams measured by the user equipment in the serving cell is less than a seventh threshold, and/or all wide beams of the neighboring cells measured by the user equipment The weighted average of the signal energy or signal quality is greater than the eighth threshold;
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam measured by the user terminal in the serving cell is less than a ninth threshold, and/or the measured by the user terminal
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam in the adjacent cell signal is greater than the tenth threshold
  • the weighted average of the signal energy or the signal quality of the third predetermined number of wide beams in the wide beam, or the signal quality in the wide beam, measured by the user terminal in the serving cell is less than the eleventh threshold, or And/or, the weighted average of the signal energy or signal quality of the fourth predetermined number of wide beams in the wide beam in the neighboring cell measured by the user terminal is greater than the twelfth threshold .
  • the resource aging information indicates an effective time that the at least one candidate cell reserves resources for the terminal.
  • the user terminal 1600 further includes:
  • the decision result reporting module 1604 is configured to select the target cell from the candidate cells based on the air interface measurement result, and report, to the source network side device, a decision to select the target cell from the candidate cells. Result; or
  • a second measurement reporting module 1605 configured to report the air interface measurement result to the source network side device, and receive a decision result that is sent by the source network side device to select the target cell from the candidate cell, where The air interface measurement result is used by the source network side device to select the target cell from the candidate cells.
  • the user terminal 1600 further includes:
  • the response message receiving module 1606 is configured to receive a pre-handover preparation response message sent by the source network side device
  • the pre-handover preparation response message indicates that the network side device corresponding to the corresponding candidate cell has completed handover preparation.
  • the pre-handover preparation response message includes response information of at least one candidate cell, where the response information of each candidate cell includes random access information, configuration parameters, and handover access allocated to the user terminal. At least one of priority information and second switching condition; or
  • the pre-handover preparation response message includes response information of at least one candidate cell and handover access priority information of each candidate cell, where the response information of each candidate cell includes random access allocated to the user terminal At least one of information, configuration parameters, and second switching conditions.
  • the random access information in the response information of the candidate cell includes: a user identifier allocated by the candidate cell to the user terminal.
  • the configuration parameter included in the response information of the candidate cell includes: the candidate cell is allocated to the user terminal as a parameter used by the user terminal to perform protocol layer configuration.
  • the handover access priority information of each candidate cell is a resource of each candidate cell after the source network side device receives the pre-handover preparation response message sent by the network side device corresponding to each candidate cell.
  • the preparation situation and the air interface measurement result of the user terminal are determined.
  • the second handover condition of each candidate cell includes resource aging information indicating a resource reservation time of the candidate cell, and further includes at least one of the following:
  • the signal energy or signal quality of a narrow beam whose signal energy or signal quality is best in the narrow beam in the serving cell is smaller than the thirteenth threshold, and/or the device measured by the user terminal
  • the signal energy or signal quality of a narrow beam with the best signal energy or signal quality in the narrow beam in the selected cell is greater than the thirteenth threshold
  • the weighted average of the signal energy or signal quality of the fifth predetermined number of narrow beams in the narrow beam, which is measured by the user terminal in the serving cell, is less than the fourteenth threshold, or/and, The weighted average of the signal energy or signal quality of the sixth predetermined number of narrow beams in the narrow beam in the candidate cell measured by the user terminal is greater than the fifteenth threshold;
  • a weighted average of signal energy or signal quality of all narrow beams measured by the user equipment in the serving cell is less than a thirteenth threshold, and/or all narrow beams of the candidate cell measured by the user equipment
  • the weighted average of the signal energy or signal quality is greater than the seventeenth threshold
  • a weighted average of signal energy or signal quality of all wide beams measured by the user terminal in the serving cell is less than an eighteenth threshold, and/or all wide beams of the candidate cell measured by the user terminal
  • the weighted average of the signal energy or signal quality is greater than the nineteenth threshold
  • the signal energy or signal quality of a wide beam with a signal energy or signal quality of the wide beam measured by the user terminal in the serving cell is less than a twentieth threshold, and/or the device measured by the user terminal
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam in the selected cell is greater than the twenty-first threshold
  • the weighted average of the signal energy or signal quality of the seventh predetermined number of wide beams in the wide beam measured by the user terminal in the serving cell is less than the twenty-second threshold, or/and The weighted average of the signal energy or signal quality of the eighth predetermined number of wide beams in the wide beam in the candidate cell measured by the user terminal is greater than the thirteenth threshold;
  • the pre-handover command includes the first handover condition, and the air interface measurement result of the user terminal satisfies the second handover condition of the one or more candidate cells, the user terminal follows the one or more The second handover condition of the candidate cell is reported or the target cell is selected.
  • the access module 1602 is configured to: if the cell that meets the second handover condition in the at least one candidate cell has completed handover preparation, according to the handover access priority of each candidate cell Level information, select a target cell, and initiate access to the target cell; or
  • the user terminal 1600 further includes:
  • the third measurement reporting module 1607 is configured to send the air interface measurement result to the source network side device.
  • the air interface measurement result is used by: the source network side device adding a new candidate cell to the at least one candidate cell, and sending a pre-handover preparation request to the new candidate cell; and/or
  • the air interface measurement result is used by: the source network side device, deleting one or more cells in the at least one candidate cell, and sending a release resource request to the network side device corresponding to the deleted one or more cells;
  • the air interface measurement result includes a result of performing air interface measurement by the user terminal on the serving cell and the neighboring cell of the serving cell.
  • the user terminal 1600 may be a user terminal in any embodiment of the method in the embodiments of the present disclosure, and any implementation manner of the user terminal in the method embodiment in the embodiment of the present disclosure may be used. It is implemented by the above-mentioned user terminal 1600 in this embodiment, and achieves the same beneficial effects, and details are not described herein again.
  • FIG. 21 is a structural diagram of a target network side device according to some embodiments of the present disclosure, which can implement the details of the cell switching method in the embodiment described with reference to FIG. 9 and achieve the same effect.
  • the target network side device 2100 includes: a preparation request receiving module 2101, a handover preparation module 2102, and an execution module 2103, where:
  • the preparation request receiving module 2101 is configured to receive a pre-handover preparation request sent by the source network side device when the user terminal needs to perform cell handover;
  • the handover preparation module 2102 is configured to perform handover preparation based on the pre-handover preparation request.
  • the executing module 2103 is configured to perform cell handover of the user terminal if the cell of the target network side device is a target cell;
  • the cell of the target network side device is a cell in the at least one candidate cell selected by the source network side device for the user terminal, and the target cell is an air interface measurement based on air interface measurement by the user terminal.
  • the result is determined, and the air interface measurement by the user terminal is performed based on a pre-handover command sent by the source network side device.
  • the at least one candidate cell includes:
  • the source network side device is based on the neighboring cell Signal energy information and/or signal quality information of the neighboring cell, at least one candidate cell selected from neighbor cells of the serving cell;
  • the source network side device predicts direction information of the user terminal, based on The direction information is from at least one candidate cell selected from the pre-stored neighbor list.
  • the target cell is a target cell selected by the user terminal from the at least one candidate cell based on an air interface measurement result obtained by performing air interface measurement by the user terminal;
  • the target cell is a cell that is selected by the source network side device from the at least one candidate cell based on the air interface measurement result obtained by the user terminal to perform air interface measurement by the user terminal.
  • the target network side device 2100 further includes:
  • the response message sending module 2104 is configured to send a pre-handover preparation response message to the source network side device if the target network side device has completed the handover preparation.
  • the pre-handover preparation response message includes at least one of the following contents:
  • Random access information, configuration parameters, and second handover conditions assigned to the user terminal are assigned to the user terminal.
  • the random access information includes: a user identifier allocated by the target network side device to the user terminal.
  • the configuration parameter includes: a parameter allocated by the target network side device to the user terminal to be used as a protocol layer configuration by the user terminal.
  • the second handover condition includes resource aging information of the resource reservation time of the target network side device, and further includes at least one of the following content:
  • the signal energy or signal quality of a narrow beam of the best signal energy or signal quality in the narrow beam measured by the user terminal in the serving cell is less than the thirteenth threshold, and/or the measured by the user terminal
  • the signal energy or signal quality of a narrow beam with a signal energy or a signal quality of the narrow beam in the cell corresponding to the target network side device is greater than the thirteenth threshold;
  • the weighted average of the signal energy or signal quality of the fifth predetermined number of narrow beams in the narrow beam, which is measured by the user terminal in the serving cell, is less than the fourteenth threshold, or/and,
  • the weighted average of the signal energy or signal quality of the sixth predetermined number of narrow beams in the narrow beam in the cell corresponding to the target network side device measured by the user equipment is greater than the tenth Five thresholds;
  • a weighted average of signal energy or signal quality of all narrow beams measured by the user terminal in the serving cell is less than a sixteenth threshold, and/or corresponding to the target network side device measured by the user terminal
  • the weighted average of the signal energy or signal quality of all narrow beams of the cell is greater than the seventeenth threshold
  • a weighted average of signal energy or signal quality of all wide beams measured by the user terminal in the serving cell is less than an eighteenth threshold, and/or corresponding to the target network side device measured by the user terminal
  • the weighted average of the signal energy or signal quality of all the wide beams of the cell is greater than the nineteenth threshold
  • the signal energy or signal quality of a wide beam which is the best signal energy or signal quality in the wide beam measured by the user terminal in the serving cell, is less than the twentieth threshold, and/or the measured by the user terminal
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam in the cell corresponding to the target network side device is greater than the 21st threshold;
  • the weighted average of the signal energy or signal quality of the seventh predetermined number of wide beams in the wide beam measured by the user terminal in the serving cell is less than the twenty-second threshold, or/and The weighted average of the signal energy or the signal quality of the eighth predetermined number of wide beams in the wide beam in the cell corresponding to the target network side device measured by the user equipment is greater than the first Twenty-three thresholds.
  • the pre-handover preparation request includes context information and/or resource reservation time of the user terminal.
  • the handover preparation module 2102 is specifically configured to reserve resources for the user terminal and establish a data channel to the source network side device according to the pre-handover preparation request, where the data channel is used for Data transmission of the user terminal.
  • the requesting and receiving module 2101 is configured to receive, by using an interface directly connected between the network side devices, a pre-handover preparation request sent by the source network side device; or
  • the target network side device 2100 further includes:
  • the first release module 2105 is configured to: if the cell of the target network side device is not the target cell, receive the release resource request sent by the source network side device by using an interface between the network side devices, and release the a resource reserved by the user terminal; or
  • the second release module 2106 is configured to: if the cell of the target network side device is not the target cell, receive the release resource request sent by the source network side device by using the core network device, and release the request as the user terminal Reserved resources.
  • the target network side device 2100 may be a network side device corresponding to the candidate cell in any embodiment of the method embodiment in the embodiment of the present disclosure. Any implementation of the network side device corresponding to the candidate cell may be implemented by the foregoing target network side device 2100 in this embodiment, and achieve the same beneficial effects, and details are not described herein again.
  • FIG. 24 is a structural diagram of another source network side device according to some embodiments of the present disclosure, which can implement the embodiment described with reference to FIG. 2 and the cell switching method in the embodiment described with reference to FIG. 3-7. The details and achieve the same effect.
  • the source network side device 2400 includes a processor 2401, a transceiver 2402, a memory 2403, a user interface 2404, and a bus interface, where:
  • the processor 2401 is configured to read a program in the memory 2403 and perform the following process:
  • the transceiver 2402 is configured to receive and transmit data under the control of the processor 2401.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 2401 and various circuits of memory represented by memory 2403.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits.
  • the bus interface provides an interface.
  • Transceiver 2402 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 2404 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 2401 is responsible for managing the bus architecture and general processing, and the memory 2403 can store data used by the processor 2401 when performing operations.
  • the processor 2401 before selecting the at least one candidate cell for the user terminal, and before sending the pre-handover preparation request to the network side device corresponding to the candidate cell, the processor 2401 is further configured to:
  • the first measurement result includes at least one of the following contents:
  • Signal energy information of the serving cell of the user terminal Signal energy information of the serving cell of the user terminal, signal quality information of the serving cell, signal energy information of a neighboring cell of the serving cell, and signal quality information of the neighboring cell.
  • the signal energy information of the serving cell of the user terminal includes signal energy information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the serving cell;
  • the signal quality information of the serving cell includes signal quality information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the serving cell;
  • the signal energy information of the neighboring cell of the serving cell includes signal energy information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the neighboring cell;
  • the signal quality information of the neighboring cell of the serving cell includes signal quality information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the neighboring cell.
  • the selecting, by the processor 2401, the at least one candidate cell for the user terminal includes:
  • the first measurement result includes signal energy information of the neighboring cell and/or signal quality information of the neighboring cell, based on signal energy information of the neighboring cell and/or signal quality information of the neighboring cell, Selecting the at least one candidate cell in a neighboring cell of the serving cell; or
  • the first measurement result does not include signal energy information of the serving cell and/or signal quality information of the serving cell, predicting direction information of the user terminal, based on the direction information in a pre-stored neighboring area
  • the at least one candidate cell is selected in the list.
  • the processor 2401 is further configured to:
  • the air interface monitors measurement parameters, first switching conditions, and resource aging information.
  • the air interface monitoring measurement parameter includes: an air interface monitoring measurement cell and/or a measurement configuration parameter, where the air interface monitoring measurement cell includes the serving cell and the neighboring cell, and the neighboring cell includes the at least one device The cell is selected, and the measurement configuration parameter includes at least one of a measurement frequency, a measurement period, and a measurement reporting condition.
  • the first switching condition includes at least one of the following:
  • the signal energy or signal quality of a narrow beam of the best signal energy or signal quality in the narrow beam measured by the user equipment in the serving cell is less than a first threshold, and/or the location measured by the user terminal
  • the signal energy or signal quality of a narrow beam of the narrowest beam in the neighboring cell signal is greater than the second threshold
  • the weighted average of the signal energy or signal quality of the first predetermined number of narrow beams in the narrow beam and the signal quality of the narrowest beam measured by the user terminal in the serving cell is less than a third threshold, or And a weighted average of signal energy or signal quality of the second predetermined number of narrow beams in the narrow beam in the neighboring cell measured by the user equipment is greater than a fourth threshold;
  • a weighted average of signal energy or signal quality of all narrow beams measured by the user equipment in the serving cell is less than a fifth threshold, and/or all neighboring cells measured by the user terminal are narrow
  • the weighted average of the signal energy or signal quality of the beam is greater than the sixth threshold
  • a weighted average of signal energy or signal quality of all wide beams measured by the user equipment in the serving cell is less than a seventh threshold, and/or all wide beams of the neighboring cells measured by the user equipment The weighted average of the signal energy or signal quality is greater than the eighth threshold;
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam measured by the user terminal in the serving cell is less than a ninth threshold, and/or the measured by the user terminal
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam in the adjacent cell signal is greater than the tenth threshold
  • the weighted average of the signal energy or the signal quality of the third predetermined number of wide beams in the wide beam, or the signal quality in the wide beam, measured by the user terminal in the serving cell is less than the eleventh threshold, or And/or, the weighted average of the signal energy or signal quality of the fourth predetermined number of wide beams in the wide beam in the neighboring cell measured by the user terminal is greater than the twelfth threshold .
  • the resource aging information indicates an effective time that the at least one candidate cell reserves resources for the terminal.
  • the pre-handover preparation response returned by the network side device corresponding to the target cell that is performed by the processor 2401, and controlling the user terminal to switch to the target cell includes:
  • the target cell is determined by the user terminal based on the air interface measurement result of the air interface measurement by the user terminal;
  • the processor 2401 is further configured to:
  • the pre-handover preparation response message sent to the user terminal includes response information of at least one candidate cell, where the response information of each candidate cell includes random access information, configuration configured for the user terminal. At least one of a parameter, a handover access priority information, and a second handover condition; or the pre-handover preparation response message sent to the user terminal includes response information of at least one candidate cell and handover access of each candidate cell Priority information, where the response information of each candidate cell includes at least one of random access information, configuration parameters, and second handover conditions allocated for the user terminal;
  • the pre-handover preparation response message sent by the network side device corresponding to the candidate cell includes at least one of the following contents:
  • Random access information, configuration parameters, and second handover conditions assigned to the user terminal are assigned to the user terminal.
  • the random access information in the response information of the candidate cell includes: a user identifier allocated by the candidate cell to the user terminal;
  • the random access information included in the pre-handover preparation response message sent by the network side device corresponding to the candidate cell includes: a user identifier allocated by the candidate cell corresponding to the network side device corresponding to the candidate cell to the user terminal.
  • the configuration parameter in the response information of the candidate cell includes: a parameter allocated by the candidate cell to the user terminal to be used as a protocol layer configuration by the user terminal;
  • the configuration parameter included in the pre-handover preparation response message sent by the network-side device corresponding to the candidate cell includes: the candidate cell corresponding to the network-side device corresponding to the candidate cell is used as the user terminal
  • the parameters for the protocol layer configuration includes: the candidate cell corresponding to the network-side device corresponding to the candidate cell is used as the user terminal
  • the parameters for the protocol layer configuration includes: the candidate cell corresponding to the network-side device corresponding to the candidate cell is used as the user terminal.
  • the processor 2401 is further configured to:
  • the handover access priority information of each candidate cell is determined according to the resource preparation situation of each candidate cell and the air interface measurement result of the user terminal.
  • the second handover condition of each candidate cell includes resource aging information indicating a resource reservation time of the candidate cell, and further includes at least one of the following:
  • the signal energy or signal quality of a narrow beam whose signal energy or signal quality is best in the narrow beam in the serving cell is smaller than the thirteenth threshold, and/or the device measured by the user terminal
  • the signal energy or signal quality of a narrow beam with the best signal energy or signal quality in the narrow beam in the selected cell is greater than the thirteenth threshold
  • the weighted average of the signal energy or signal quality of the fifth predetermined number of narrow beams in the narrow beam, which is measured by the user terminal in the serving cell, is less than the fourteenth threshold, or/and, The weighted average of the signal energy or signal quality of the sixth predetermined number of narrow beams in the narrow beam in the candidate cell measured by the user terminal is greater than the fifteenth threshold;
  • a weighted average of signal energy or signal quality of all narrow beams measured by the user equipment in the serving cell is less than a thirteenth threshold, and/or all narrow beams of the candidate cell measured by the user equipment
  • the weighted average of the signal energy or signal quality is greater than the seventeenth threshold
  • a weighted average of signal energy or signal quality of all wide beams measured by the user terminal in the serving cell is less than an eighteenth threshold, and/or all wide beams of the candidate cell measured by the user terminal
  • the weighted average of the signal energy or signal quality is greater than the nineteenth threshold
  • the signal energy or signal quality of a wide beam with a signal energy or signal quality of the wide beam measured by the user terminal in the serving cell is less than a twentieth threshold, and/or the device measured by the user terminal
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam in the selected cell is greater than the twenty-first threshold
  • the weighted average of the signal energy or signal quality of the seventh predetermined number of wide beams in the wide beam measured by the user terminal in the serving cell is less than the twenty-second threshold, or/and The weighted average of the signal energy or signal quality of the eighth predetermined number of wide beams in the wide beam in the candidate cell measured by the user terminal is greater than the thirteenth threshold;
  • the pre-handover command includes the first handover condition, and the air interface measurement result of the user terminal satisfies the second handover condition of the one or more candidate cells, the user terminal follows the one or more The second handover condition of the candidate cell is reported or the target cell is selected.
  • the pre-handover preparation response returned by the network side device corresponding to the target cell that is performed by the processor 2401, and controlling the user terminal to switch to the target cell includes:
  • the result of the air interface measurement by the user terminal indicates that the multiple candidate cells satisfy the second handover condition, and receives the pre-handover preparation response sent by the network side device corresponding to the multiple candidate cells, according to the Switching access priority information of multiple candidate cells, selecting a target cell, and controlling the user terminal to switch to the target cell; or
  • the candidate cell is used as the candidate cell.
  • the target cell receives the pre-handover preparation response returned by the network side device corresponding to the target cell, and controls the user terminal to switch to the target cell.
  • the pre-handover preparation request includes context information and/or resource reservation time of the user terminal.
  • the processor 2401 sends a pre-handover preparation request to the network side device corresponding to the candidate cell, including:
  • the determining, when the user terminal needs to perform the cell handover, selecting the at least one candidate cell for the user terminal, and sending the pre-handover preparation request to the network side device corresponding to the candidate cell includes:
  • the processor 2401 is further configured to:
  • the source network side device 2400 may be the source network side device in any of the method embodiments in the embodiments of the present disclosure, and the source network side device in the method embodiment in the embodiment of the present disclosure Any of the foregoing embodiments may be implemented by the source network side device 2400 in the embodiment, and achieve the same beneficial effects, and details are not described herein again.
  • FIG. 25 is a structural diagram of another user terminal according to some embodiments of the present disclosure, which can implement the details of the cell switching method in the embodiment described with reference to FIG. 8 and achieve the same effect.
  • the user terminal 2500 includes at least one processor 2501, a memory 2502, at least one network interface 2504, and a user interface 2503.
  • the various components in terminal 2500 are coupled together by a bus system 2505.
  • the bus system 2505 is used to implement connection communication between these components.
  • the bus system 2505 includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • various buses are labeled as bus system 2505 in FIG.
  • the user interface 2503 may include a display, a keyboard, or a pointing device (eg, a mouse, a track ball, a touch pad, or a touch screen, etc.).
  • a pointing device eg, a mouse, a track ball, a touch pad, or a touch screen, etc.
  • the memory 2502 in the embodiments of the present disclosure may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SDRAM Synchronous Connection Dynamic Random Access Memory
  • DRRAM direct memory bus random access memory
  • the memory 2502 stores elements, executable modules or data structures, or a subset thereof, or their extended set: an operating system 25021 and an application 25022.
  • the operating system 25021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks.
  • the application 25022 includes various applications, such as a media player (Media Player), a browser (Browser), etc., for implementing various application services.
  • a program implementing the method of the embodiments of the present disclosure may be included in the application 25022.
  • the processor 2501 by calling a program or an instruction stored in the memory 2502, specifically, a program or an instruction stored in the application 25022, the processor 2501 is configured to:
  • the air interface measurement result is used to determine the target cell in the at least one candidate cell, where the at least one candidate cell is the user network terminal when the source network side device determines that the user terminal needs to perform cell handover. Selected cell.
  • the method disclosed in the above embodiments of the present disclosure may be applied to the processor 2501 or implemented by the processor 2501.
  • the processor 2501 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 2501 or an instruction in a form of software.
  • the processor 2501 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or the like. Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in connection with the embodiments of the present disclosure may be directly embodied by the execution of the hardware decoding processor or by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 2502, and the processor 2501 reads the information in the memory 2502 and performs the steps of the above method in combination with its hardware.
  • the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processing (DSP), Digital Signal Processing Equipment (DSP Device, DSPD), programmable Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general purpose processor, controller, microcontroller, microprocessor, other for performing the functions described herein In an electronic unit or a combination thereof.
  • ASICs Application Specific Integrated Circuits
  • DSP Digital Signal Processing
  • DSP Device Digital Signal Processing Equipment
  • PLD programmable Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • the techniques described herein can be implemented by modules (eg, procedures, functions, and so on) that perform the functions described herein.
  • the software code can be stored in memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.
  • the processor 2501 is further configured to:
  • the source network side device determines whether the user terminal needs to perform cell handover, and when the first measurement result meets a preset condition for triggering cell handover Determining whether the user terminal needs to perform cell handover;
  • the first measurement result includes at least one of the following contents:
  • Signal energy information of the serving cell of the user terminal Signal energy information of the serving cell of the user terminal, signal quality information of the serving cell, signal energy information of a neighboring cell of the serving cell, and signal quality information of the neighboring cell.
  • the signal energy information of the serving cell of the user terminal includes signal energy information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the serving cell;
  • the signal quality information of the serving cell includes signal quality information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the serving cell;
  • the signal energy information of the neighboring cell of the serving cell includes signal energy information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the neighboring cell;
  • the signal quality information of the neighboring cell of the serving cell includes signal quality information obtained by the user terminal measuring at least one wide beam and/or at least one narrow beam of the neighboring cell.
  • the at least one candidate cell includes:
  • the source network side device is based on signal energy information of the neighboring cell and/or the neighboring cell Signal quality information, at least one candidate cell selected in a neighboring cell of the serving cell;
  • the source network side device predicts direction information of the user terminal, based on the direction information At least one candidate cell selected in the pre-saved neighbor list.
  • performing air interface measurement to obtain air interface measurement results including:
  • the device When the user terminal needs to perform cell handover, the device sends a pre-handover command to the user terminal, performs air interface measurement based on the pre-handover command, and obtains an air interface measurement result;
  • the pre-switching command includes at least one of the following contents:
  • the air interface monitors measurement parameters, first switching conditions, and resource aging information.
  • the air interface monitoring measurement parameter includes: an air interface monitoring measurement cell and/or a measurement configuration parameter, where the air interface monitoring measurement cell includes the serving cell and the neighboring cell, and the neighboring cell includes the at least one device The cell is selected, and the measurement configuration parameter includes at least one of a measurement frequency, a measurement period, and a measurement reporting condition.
  • the first switching condition includes at least one of the following:
  • the signal energy or signal quality of a narrow beam of the best signal energy or signal quality in the narrow beam measured by the user equipment in the serving cell is less than a first threshold, and/or the location measured by the user terminal
  • the signal energy or signal quality of a narrow beam of the narrowest beam in the neighboring cell signal is greater than the second threshold
  • the weighted average of the signal energy or signal quality of the first predetermined number of narrow beams in the narrow beam and the signal quality of the narrowest beam measured by the user terminal in the serving cell is less than a third threshold, or And a weighted average of signal energy or signal quality of the second predetermined number of narrow beams in the narrow beam in the neighboring cell measured by the user equipment is greater than a fourth threshold;
  • a weighted average of signal energy or signal quality of all narrow beams measured by the user equipment in the serving cell is less than a fifth threshold, and/or all neighboring cells measured by the user terminal are narrow
  • the weighted average of the signal energy or signal quality of the beam is greater than the sixth threshold
  • a weighted average of signal energy or signal quality of all wide beams measured by the user equipment in the serving cell is less than a seventh threshold, and/or all wide beams of the neighboring cells measured by the user equipment The weighted average of the signal energy or signal quality is greater than the eighth threshold;
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam measured by the user terminal in the serving cell is less than a ninth threshold, and/or the measured by the user terminal
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam in the adjacent cell signal is greater than the tenth threshold
  • the weighted average of the signal energy or the signal quality of the third predetermined number of wide beams in the wide beam, or the signal quality in the wide beam, measured by the user terminal in the serving cell is less than the eleventh threshold, or And/or, the weighted average of the signal energy or signal quality of the fourth predetermined number of wide beams in the wide beam in the neighboring cell measured by the user terminal is greater than the twelfth threshold .
  • the resource aging information indicates an effective time that the at least one candidate cell reserves resources for the terminal.
  • the processor 2501 is further configured to:
  • the side device selects the target cell from the candidate cells.
  • the processor 2501 is further configured to:
  • the pre-handover preparation response message indicates that the network side device corresponding to the corresponding candidate cell has completed handover preparation.
  • the pre-handover preparation response message includes response information of at least one candidate cell, where the response information of each candidate cell includes random access information, configuration parameters, and handover access allocated to the user terminal. At least one of priority information and second switching condition; or
  • the pre-handover preparation response message includes response information of at least one candidate cell and handover access priority information of each candidate cell, where the response information of each candidate cell includes random access allocated to the user terminal At least one of information, configuration parameters, and second switching conditions.
  • the random access information in the response information of the candidate cell includes: a user identifier allocated by the candidate cell to the user terminal.
  • the configuration parameter included in the response information of the candidate cell includes: the candidate cell is allocated to the user terminal as a parameter used by the user terminal to perform protocol layer configuration.
  • the handover access priority information of each candidate cell is a resource of each candidate cell after the source network side device receives the pre-handover preparation response message sent by the network side device corresponding to each candidate cell.
  • the preparation situation and the air interface measurement result of the user terminal are determined.
  • the second handover condition of each candidate cell includes resource aging information indicating a resource reservation time of the candidate cell, and further includes at least one of the following:
  • the signal energy or signal quality of a narrow beam whose signal energy or signal quality is best in the narrow beam in the serving cell is smaller than the thirteenth threshold, and/or the device measured by the user terminal
  • the signal energy or signal quality of a narrow beam with the best signal energy or signal quality in the narrow beam in the selected cell is greater than the thirteenth threshold
  • the weighted average of the signal energy or signal quality of the fifth predetermined number of narrow beams in the narrow beam, which is measured by the user terminal in the serving cell, is less than the fourteenth threshold, or/and, The weighted average of the signal energy or signal quality of the sixth predetermined number of narrow beams in the narrow beam in the candidate cell measured by the user terminal is greater than the fifteenth threshold;
  • a weighted average of signal energy or signal quality of all narrow beams measured by the user equipment in the serving cell is less than a thirteenth threshold, and/or all narrow beams of the candidate cell measured by the user equipment
  • the weighted average of the signal energy or signal quality is greater than the seventeenth threshold
  • a weighted average of signal energy or signal quality of all wide beams measured by the user terminal in the serving cell is less than an eighteenth threshold, and/or all wide beams of the candidate cell measured by the user terminal
  • the weighted average of the signal energy or signal quality is greater than the nineteenth threshold
  • the signal energy or signal quality of a wide beam with a signal energy or signal quality of the wide beam measured by the user terminal in the serving cell is less than a twentieth threshold, and/or the device measured by the user terminal
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam in the selected cell is greater than the twenty-first threshold
  • the weighted average of the signal energy or signal quality of the seventh predetermined number of wide beams in the wide beam measured by the user terminal in the serving cell is less than the twenty-second threshold, or/and The weighted average of the signal energy or signal quality of the eighth predetermined number of wide beams in the wide beam in the candidate cell measured by the user terminal is greater than the thirteenth threshold;
  • the pre-handover command includes the first handover condition, and the air interface measurement result of the user terminal satisfies the second handover condition of the one or more candidate cells, the user terminal follows the one or more The second handover condition of the candidate cell is reported or the target cell is selected.
  • the performing, by the processor 2501, to initiate the access to the target cell based on the air interface measurement result including:
  • the cell that meets the second handover condition in the at least one candidate cell has completed handover preparation, selecting a target cell according to handover access priority information of each candidate cell, and initiating the target cell Access; or
  • the processor 2501 is further configured to:
  • the air interface measurement result is used by: the source network side device adding a new candidate cell to the at least one candidate cell, and sending a pre-handover preparation request to the new candidate cell; and/or
  • the air interface measurement result is used by: the source network side device, deleting one or more cells in the at least one candidate cell, and sending a release resource request to the network side device corresponding to the deleted one or more cells;
  • the air interface measurement result includes a result of performing air interface measurement by the user terminal on the serving cell and the neighboring cell of the serving cell.
  • the user terminal 2500 may be a user terminal in any embodiment of the method embodiment in the embodiments of the present disclosure, and any implementation manner of the user terminal in the method embodiment in the embodiment of the present disclosure may be used. It is implemented by the above-mentioned user terminal 2500 in this embodiment, and achieves the same beneficial effects, and details are not described herein again.
  • FIG. 26 is a structural diagram of another target network side device according to an embodiment of the present disclosure, which can implement the details of the cell switching method in the embodiment described with reference to FIG. 9, and achieve the same effect.
  • the target network side device 2600 includes: a processor 2601, a transceiver 2602, a memory 2603, a user interface 2604, and a bus interface, wherein:
  • the processor 2601 is configured to read a program in the memory 2603 and perform the following process:
  • the cell of the target network side device is the target cell, performing cell handover of the user terminal;
  • the cell of the target network side device is a cell in the at least one candidate cell selected by the source network side device for the user terminal, and the target cell is an air interface measurement based on air interface measurement by the user terminal.
  • the result is determined, and the air interface measurement by the user terminal is performed based on a pre-handover command sent by the source network side device.
  • the transceiver 2602 is configured to receive and transmit data under the control of the processor 2601.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 2601 and various circuits of memory represented by memory 2603.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits.
  • the bus interface provides an interface.
  • Transceiver 2602 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 2604 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 2601 is responsible for managing the bus architecture and the usual processing, and the memory 2603 can store data used by the processor 2601 when performing operations.
  • the at least one candidate cell includes:
  • the source network side device is based on the neighboring cell Signal energy information and/or signal quality information of the neighboring cell, at least one candidate cell selected from neighbor cells of the serving cell;
  • the source network side device predicts direction information of the user terminal, based on The direction information is from at least one candidate cell selected from the pre-stored neighbor list.
  • the target cell is a target cell selected by the user terminal from the at least one candidate cell based on an air interface measurement result obtained by the user terminal performing air interface measurement;
  • the target cell is a cell that is selected by the source network side device from the at least one candidate cell based on the air interface measurement result obtained by the user terminal to perform air interface measurement by the user terminal.
  • the processor 2601 is further configured to:
  • the pre-handover preparation response message includes at least one of the following contents:
  • Random access information, configuration parameters, and second handover conditions assigned to the user terminal are assigned to the user terminal.
  • the random access information includes: a user identifier allocated by the target network side device to the user terminal.
  • the configuration parameter includes: a parameter allocated by the target network side device to the user terminal to be used as a protocol layer configuration by the user terminal.
  • the second handover condition includes resource aging information of the resource reservation time of the target network side device, and further includes at least one of the following content:
  • the signal energy or signal quality of a narrow beam of the best signal energy or signal quality in the narrow beam measured by the user terminal in the serving cell is less than the thirteenth threshold, and/or the measured by the user terminal
  • the signal energy or signal quality of a narrow beam with a signal energy or a signal quality of the narrow beam in the cell corresponding to the target network side device is greater than the thirteenth threshold;
  • the weighted average of the signal energy or signal quality of the fifth predetermined number of narrow beams in the narrow beam, which is measured by the user terminal in the serving cell, is less than the fourteenth threshold, or/and,
  • the weighted average of the signal energy or signal quality of the sixth predetermined number of narrow beams in the narrow beam in the cell corresponding to the target network side device measured by the user equipment is greater than the tenth Five thresholds;
  • a weighted average of signal energy or signal quality of all narrow beams measured by the user terminal in the serving cell is less than a sixteenth threshold, and/or corresponding to the target network side device measured by the user terminal
  • the weighted average of the signal energy or signal quality of all narrow beams of the cell is greater than the seventeenth threshold
  • a weighted average of signal energy or signal quality of all wide beams measured by the user terminal in the serving cell is less than an eighteenth threshold, and/or corresponding to the target network side device measured by the user terminal
  • the weighted average of the signal energy or signal quality of all the wide beams of the cell is greater than the nineteenth threshold
  • the signal energy or signal quality of a wide beam which is the best signal energy or signal quality in the wide beam measured by the user terminal in the serving cell, is less than the twentieth threshold, and/or the measured by the user terminal
  • the signal energy or signal quality of a wide beam with the best signal energy or signal quality in the wide beam in the cell corresponding to the target network side device is greater than the 21st threshold;
  • the weighted average of the signal energy or signal quality of the seventh predetermined number of wide beams in the wide beam measured by the user terminal in the serving cell is less than the twenty-second threshold, or/and The weighted average of the signal energy or the signal quality of the eighth predetermined number of wide beams in the wide beam in the cell corresponding to the target network side device measured by the user equipment is greater than the first Twenty-three thresholds.
  • the pre-handover preparation request includes context information and/or resource reservation time of the user terminal.
  • the preparing, by the processor 2601, the handover preparation, based on the pre-handover preparation request includes:
  • the pre-handover preparation request sent by the receiving source network side device which is executed by the processor 2601, includes:
  • the processor 2601 is further configured to:
  • the core network device receives the release resource request sent by the source network side device, and releases the resource reserved for the user terminal.
  • the target network side device 2600 may be a network side device corresponding to the candidate cell in any embodiment of the method embodiment in the embodiment of the present disclosure. Any implementation of the network side device corresponding to the candidate cell may be implemented by the foregoing target network side device 2600 in this embodiment, and achieve the same beneficial effects, and details are not described herein again.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present disclosure.
  • each functional unit in each embodiment of the present disclosure may be integrated in one processing unit, or each unit may exist physically separately, or two or more units may be integrated in one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such an understanding, a portion of the technical solution of the present disclosure that contributes in essence or to the prior art or a portion of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

提供一种小区切换方法、相关设备和系统，该方法包括：在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区，向所述备选小区对应的网络侧设备发送预切换准备请求；根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，其中，所述目标小区是基于所述用户终端对空口测量的结果从所述备选小区中选择的小区。

Description

一种小区切换方法、相关设备和系统
相关申请的交叉引用
本申请主张在2017年1月6日在中国提交的中国专利申请No.201710010181.X的优先权，其全部内容通过引用包含于此。
技术领域
本公开文本涉及通信技术领域，尤其涉及一种小区切换方法、相关设备和系统。
背景技术
目前通信系统中，用户终端(User Equipment，UE)进行小区切换时，是UE根据源网络侧设备配置的测量参数进行测量上报，源网络侧设备基于UE上报的测量结果进行目标小区的确定流程；然后，源网络侧设备向目标小区对应的目标网络侧设备发起切换准备流程，在目标网络侧设备切换准备完成后，源网络侧设备向UE发送切换命令，UE接收到该切换命令，向目标网络侧设备发起接入，以完成小区切换。上述技术方案中，在确定目标网络侧设备后，进行切换准备流程，使得测量到切换执行间有较大的时延。
发明内容
本公开文本实施例提供一种小区切换方法、相关设备和系统，以解决测量到切换执行间有较大的时延的问题。
第一方面，本公开文本实施例提供一种小区切换方法，包括：
在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区，向所述备选小区对应的网络侧设备发送预切换准备请求；
根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，其中，所述目标小区是基于所述用户终端对空口测量的结果从所述备选小区中选择的小区。
第二方面，本公开文本实施例提供一种小区切换方法，应用于用户终端， 包括：
在用户终端需要进行小区切换时，进行空口测量，获得空口测量结果；
基于所述空口测量结果，向目标小区发起接入；
其中，所述空口测量结果用于在至少一个备选小区中确定所述目标小区，所述至少一个备选小区是源网络侧设备确定所述用户终端需要进行小区切换时，为所述用户终端选择的小区。
第三方面，本公开文本实施例提供一种小区切换方法，应用于目标网络侧设备，包括：
在用户终端需要进行小区切换时，接收源网络侧设备发送的预切换准备请求；
基于所述预切换准备请求进行切换准备；
若所述目标网络侧设备的小区为目标小区，则执行所述用户终端的小区切换；
其中，所述目标网络侧设备的小区为所述源网络侧设备为所述用户终端选择的至少一个备选小区中的小区，所述目标小区是基于所述用户终端进行空口测量得到的空口测量结果确定的，且所述用户终端进行空口测量是基于所述源网络侧设备发送的预切换命令而进行的。
第四方面，本公开文本实施例提供一种源网络侧设备，包括：
备选小区选择模块，用于在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区；
第一发送模块，用于向所述备选小区对应的网络侧设备发送预切换准备请求；
控制模块，用于根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，其中，所述目标小区是基于所述用户终端对空口测量的结果从所述备选小区中选择的小区。
第五方面，本公开文本实施例提供一种用户终端，包括：
空口测量模块，用于在用户终端需要进行小区切换时，进行空口测量，获得空口测量结果；
接入模块，用于基于所述空口测量结果，向目标小区发起接入；
其中，所述空口测量结果用于在至少一个备选小区中确定所述目标小区，所述至少一个备选小区是源网络侧设备确定所述用户终端需要进行小区切换时，为所述用户终端选择的小区。
第六方面，本公开文本实施例提供一种目标网络侧设备，包括：
准备请求接收模块，用于在用户终端需要进行小区切换时，接收源网络侧设备发送的预切换准备请求；
切换准备模块，用于基于所述预切换准备请求进行切换准备；
执行模块，用于若所述目标网络侧设备的小区为目标小区，则执行所述用户终端的小区切换；
其中，所述目标网络侧设备的小区为所述源网络侧设备为所述用户终端选择的至少一个备选小区中的小区，所述目标小区是基于所述用户终端进行空口测量得到的空口测量结果确定的，且所述用户终端进行空口测量是基于所述源网络侧设备发送的预切换命令而进行的。
第七方面，本公开文本实施例提供一种源网络侧设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如第一方面所述的小区切换方法的步骤。
第八方面，本公开文本实施例提供一种用户终端，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如第二方面所述的小区切换方法的步骤。
第九方面，本公开文本实施例提供一种目标网络侧设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如第三方面所述的小区切换方法的步骤。
第十方面，本公开文本实施例提供一种计算机可读存储介质，其上存储有计算机程序，所述程序被处理器执行时，实现如第一方面所述的小区切换方法的步骤。
第十一方面，本公开文本实施例提供一种计算机可读存储介质，其上存储有计算机程序，所述程序被处理器执行时，实现如第二方面所述的小区切换方法的步骤。
第十二方面，本公开文本实施例提供一种计算机可读存储介质，其上存 储有计算机程序，所述程序被处理器执行时，实现如第三方面所述的小区切换方法的步骤。
这样，本公开文本实施例中，在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区，向所述备选小区对应的网络侧设备发送预切换准备请求；根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，其中，所述目标小区是基于所述用户终端对空口测量的结果从所述备选小区中选择的小区。由于在确定目标小区之前，由备选小区进行切换准备，能够降低测量到切换执行间的时延。
附图说明
为了更清楚地说明本公开文本实施例的技术方案，下面将对本公开文本实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开文本的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本公开文本一些实施例可应用的一种小区切换系统的结构图；
图2是本公开文本一些实施例提供的一种小区切换方法的流程图；
图3是本公开文本一些实施例提供的另一种小区切换方法的流程图；
图4是本公开文本参照图3描述的实施例提供的一种小区切换方法信令示意图之一；
图5是本公开文本参照图3描述的实施例提供的一种小区切换方法信令示意图之二；
图6是本公开文本参照图3描述的实施例提供的一种小区切换方法信令示意图之三；
图7是本公开文本参照图3描述的实施例提供的一种小区切换方法信令示意图之四；
图8是本公开文本一些实施例提供的又一种小区切换方法的流程图；
图9是本公开文本一些实施例提供的又一种小区切换方法的流程图；
图10是本公开文本一些实施例提供的一种源网络侧设备的结构图之一；
图11是本公开文本一些实施例提供的一种源网络侧设备的结构图之二；
图12是本公开文本一些实施例提供的一种源网络侧设备的结构图之三；
图13是本公开文本一些实施例提供的一种源网络侧设备的结构图之四；
图14是本公开文本一些实施例提供的一种源网络侧设备的结构图之五；
图15是本公开文本一些实施例提供的一种源网络侧设备的结构图之六；
图16是本公开文本一些实施例提供的一种用户终端的结构图之一；
图17是本公开文本一些实施例提供的一种用户终端的结构图之二；
图18是本公开文本一些实施例提供的一种用户终端的结构图之三；
图19是本公开文本一些实施例提供的一种用户终端的结构图之四；
图20是本公开文本一些实施例提供的一种用户终端的结构图之五；
图21是本公开文本一些实施例提供的一种目标网络侧设备的结构图之一；
图22是本公开文本一些实施例提供的一种目标网络侧设备的结构图之二；
图23是本公开文本一些实施例提供的一种目标网络侧设备的结构图之三；
图24是本公开文本一些实施例提供的另一种源网络侧设备的结构图；
图25是本公开文本一些实施例提供的另一种用户终端的结构图；
图26是本公开文本一些实施例提供的另一种目标网络侧设备的结构图。
具体实施方式
下面将结合本公开文本实施例中的附图，对本公开文本实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开文本一部分实施例，而不是全部的实施例。基于本公开文本中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开文本保护的范围。
参见图1，图1为本公开文本一些实施例可应用的一种小区切换系统的结构图，如图1所示，包括用户终端11、源网络侧设备12和多个目标网络侧设备13，其中，用户终端11例如可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)、个人数字助理(personal digital  assistant，PDA)、移动上网装置(Mobile Internet Device，MID)或可穿戴式设备(Wearable Device)等终端侧设备，需要说明的是，在本公开文本实施例中并不限定用户终端11的具体类型。另外，本公开文本实施例中，源网络侧设备12和目标网络侧设备13均可以是传输接收点(TRP，Transmission Reception Point)，或者可以是基站，基站可以是宏站，如长期演进(Long Term Evolution，LTE)系统中的演进型节点B(Evolved Node B，eNB)、5G系统中的新空口(New Radio，NR)、节点B(Node B，NB)等。或者源网络侧设备12和目标网络侧设备13均可以是接入点(AP，access point)。进一步，本公开文本实施例中，上述系统还可以包括核心网设备14，例如：移动性管理实体(Mobility Management Entity，MME)。另外，本公开文本实施例中，目标网络侧设备13可以理解为备选小区对应的网络侧设备。
需要说明的是，在本公开文本实施例中并不限定源网络侧设备12和目标网络侧设备13的具体类型，用户终端11、源网络侧设备12和目标网络侧设备13的具体功能将通过以下多个实施例进行具体描述。
参见图2，图2是本公开文本一些实施例提供的一种小区切换方法的流程图，该方法应用于源网络侧设备，如图2所示，包括以下步骤：
步骤201、在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区，向所述备选小区对应的网络侧设备发送预切换准备请求。
其中，上述方法可以应用于用户终端的源网络侧设备，其中，源网络侧设备可以是用户终端当前接入的网络侧设备，或者可以理解为用户终端的服务小区所属的网络侧设备。
另外，上述确定用户终端需要进行小区切换可以是源网络侧设备基于用户终端上报的测量结果确定的，例如：当用户终端上报的测量结果满足预设条件，即触发步骤201，如用户终端测量的服务小区RSRP(Reference Signal Receiving Power，参考信号接收功率)或RSRQ(Reference Signal Receiving Quality，参考信号接收质量)小于某一门限，或者服务小区的RSRP或者RSRQ小于某一门限，且邻小区的RSRP或者RSRQ大于另一门限B。且上述测量结果还可以是用户终端判断满足上述预设条件后向源网络侧设备上报的。
上述为用户终端选择至少一个备选小区可以是根据用户终端的测量结果， 或者源网络侧设备保存的邻区列表在用户终端的服务小区的邻小区中选择的至少一个小区。且选择可以是分多次选择，且每选择一次就向对应备选小区对应的网络侧设备发送预切换准备请求。
另外，当备选小区对应的网络侧设备接收到上述预切换准备请求后，就可以进行切换准备，且网络侧设备在完成切换准备后，就会向源网络侧设备发送预切换准备应答。
步骤202、根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，其中，所述目标小区是基于所述用户终端对空口测量的结果从所述备选小区中选择的小区。
其中，上述目标小区是基于所述用户终端对空口测量的结果从所述备选小区中选择的小区可以是，用户终端基于空口测量结果在上述至少一个备选小区中选择的目标小区，或者可以是用户终端向源网络侧设备上报该空口测量结果，由源网络侧设备基于该空口测量结果在上述至少一个备选小区中选择的目标小区。
而上述用户终端对空口测量的结果可以是用户终端根据预先的配置自动进行测量，并可以周期性上报给源网络侧设备，或者可以是根据源网络侧设备下发的测量命令进行的。
在向所述备选小区对应的网络侧设备发送预切换准备请求和控制所述用户终端切换至所述目标小区之间，备选小区对应的网络侧设备在进行切换准备，而用户终端在进行空口的测量，即用户终端的空口测量和备选小区对应的网络侧设备的切换准备并行，从而降低小区切换的时延，以提高用户终端和网络侧设备的性能。
这样，本公开文本实施例中，在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区，向所述备选小区对应的网络侧设备发送预切换准备请求；根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，其中，所述目标小区是基于所述用户终端对空口测量的结果从所述备选小区中选择的小区。由于在确定目标小区之前，由备选小区进行切换准备，能够降低测量到切换执行间的时延。
参见图3，图3是本公开文本一些实施例提供的另一种小区切换方法的 流程图，该方法应用于源网络侧设备，如图3所示，包括以下步骤：
步骤301、接收所述用户终端上报的第一测量结果。
其中，所述第一测量结果满足用于触发小区切换的预设条件，且所述第一测量结果包括如下内容中的至少一项：
所述用户终端的服务小区的信号能量信息、所述服务小区的信号质量信息、所述服务小区的邻小区的信号能量信息和所述邻小区的信号质量信息。
该步骤中，可以是用户终端进行参考信号测量后，判断第一测量结果满足上述预设条件后，向源网络侧设备上报的。另外，上述信号能量信息可以是RSRP，而上述信号质量信息可以是RSRQ。而上述预设条件可以是的服务小区RSRP或RSRQ小于某一门限，或者服务小区的RSRP或者RSRQ小于某一门限，且邻小区的RSRP或者RSRQ大于另一门限B。
可选地，所述用户终端的服务小区的信号能量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
所述服务小区的信号质量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息；
所述服务小区的邻小区的信号能量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
所述服务小区的邻小区的信号质量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息。
该实施方式中，可以实现用户终端对服务小区的一个或者多个宽波束或者一个或者多个窄波束进行测量，以及对服务小区的邻小区的一个或者多个宽波束或者一个或者多个窄波束进行测量，基于这些测量进行上报。
步骤302、基于所述第一测量结果确定所述用户终端需要进行小区切换。
当源网络侧设备获得上述第一测量结果后，就可以确定用户终端需要进行小区切换。
需要说明的是，本实施例中，步骤301和步骤302为可选地，例如：源网络侧设备可以是基于自身的负载情况确定用户终端进行小区切换。
步骤303、在确定用户终端需要进行小区切换时，为所述用户终端选择 至少一个备选小区，向所述备选小区对应的网络侧设备发送预切换准备请求。
可选地，所述为所述用户终端选择至少一个备选小区的步骤，包括：
若所述第一测量结果包括所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，则基于所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，在所述服务小区的邻小区中选择所述至少一个备选小区；或者
若所述第一测量结果未包括所述服务小区的信号能量信息和/或所述服务小区的信号质量信息，则预测所述用户终端的方向信息，基于所述方向信息在预先保存的邻区列表中选择所述至少一个备选小区。
其中，上述邻小区可以是与上述服务小区相邻的一个或者多个小区。而上述基于所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，在所述服务小区的邻小区中选择所述至少一个备选小区可以是，根据邻小区信号能量信息和/或信号质量信息，在邻小区中选择信号最好的一个或者多个小区作为上述至少一个备选小区。
其中，上述预测所述用户终端的方向信息，基于所述方向信息在预先保存的邻区列表中选择所述至少一个备选小区可以是，选择邻区列表中与上述用户终端的方向匹配的至少一个备选小区，例如：用户终端的方向信息表示在西北方向，从而源网络侧设备就可以选择在西北方向的至少一个备选小区。由于备选小区是基于用户终端的方向信息选择的，这样备选小区更适合用户终端，以提高用户终端切换的传输性能。其中，上述预测用户终端的方向可以是基于用户终端传输数据的波束进行确定的，因为，源网络侧设备的各波束都是存在固定方向的，从而确定用户终端传输的波束，就可以确定用户终端的方向。
步骤304、向所述用户终端发送预切换命令，其中，所述预切换命令包括如下内容中的至少一项：
空口监控测量参数、第一切换条件和资源时效信息。
其中，上述空口监控测量参数可以包括：空口监控测量小区和/或测量配置参数，所述空口监控测量小区包括所述服务小区和所述邻小区，所述邻小区包括所述至少一个备选小区，且所述测量配置参数包括测量频率、测量周期和测量上报条件中的至少一项。
其中，上述空口监控测量小区可以是，用户终端进行空口测量进行测量的小区的标识，例如：配置用户终端对服务小区和上述至少一个备选小区进行空口测量，或者可以是配置用户终端对服务小区和邻小区进行空口测量等，对此不作限定。另外，上述空口监控测量小区不包括也是可以的，例如：用户终端默认对服务小区和邻小区进行空口测量。
当然，本公开文本实施例中，不包括测量配置参数也是可以实现，例如，用户终端可以根据在该流程之前确定的测量参数对邻小区和服务小区进行测量。
通过配置上述空口监控测量参数可以让用户终端进行准确有效的测量，以节约用户终端的功耗。
可选地，所述第一切换条件包括如下内容中的至少一项：
在所述服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第一门限，和/或，所述用户终端测量到的所述邻小区信号中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第二门限；
在所述服务小区中所述用户终端测量到的窄波束中的信号能量或信号质量最好的第一预设数量的窄波束的信号能量或信号质量的加权平均值小于第三门限，或/和，所述用户终端测量到的所述邻小区中的窄波束中信号能量或信号质量最好的第二预设数量的窄波束的信号能量或信号质量的加权平均值大于第四门限；
在所述服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第五门限，和/或，所述用户终端测量到的所述邻小区所有的窄波束的信号能量或信号质量的加权平均值大于第六门限；
在所述服务小区中所述用户终端测量的所有的宽波束的信号能量或信号质量的加权平均值小于第七门限，和/或，所述用户终端测量到的所述邻小区所有的宽波束的信号能量或信号质量的加权平均值大于第八门限；
在所述服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第九门限，和/或，所述用户终端测量到的所述邻小区信号中的宽波束中信号能量或信号质量最好的一个宽 波束的信号能量或信号质量大于第十门限；
在所述服务小区中所述用户终端测量到的宽波束中的信号能量或信号质量最好的第三预设数量的宽波束的信号能量或信号质量的加权平均值小于第十一门限，或/和，所述用户终端测量到的所述邻小区中的宽波束中信号能量或信号质量最好的第四预设数量的宽波束的信号能量或信号质量的加权平均值大于第十二门限。
其中，上述提到的多个门限可以是用户终端预先设置，或者网络侧设备预先配置给用户终端的。且上述多个预设数量可以是用户终端预先设置，或者网络侧设备预先配置给用户终端的。上述宽波束可以为波瓣比某一频率波束(例如：高频波束)的波瓣要宽的波束，上述窄波束可以为波瓣与某一频率波束(例如：高频波束)的波瓣的差值在预设范围内的波束。
通过上述第一切换条件可以实现用户终端选择合适的目标小区，或者用户终端在判断空口测量结果返回上述第一切换条件后上报给源网络侧设备，由源网络侧设备选择目标小区，即上述第一切换条件可以理解为用户终端空口测量结果上报触发条件之一。当然，本公开文本实施例中，第一切换条件还可以是针对不同的备选小区存在不同的第一切换条件，或者还可以是第一切换条件用于所有备选小区。
另外，上述第一切换条件还可以是在所述服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量比第一门限要低于某一预设阈值(delta)，其中，这里的低于可以是第一门限减去所述服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量的差值小于或者等于预设阈值(delta)，和/或，所述用户终端测量到的所述邻小区信号中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量比第二门限要高于某一预设阈值(delta)。其中，上述其他门限的条件同样可以是采用预设阈值(delta)的情况进行判定，此处不作赘述。
可选地，所述资源时效信息表示所述至少一个备选小区为所述终端预留资源的有效时间。
通过上述有效时间可以是达到节约网络侧设备资源的目的。
可选地，所述预切换准备请求包括所述用户终端的上下文信息和/或资源预留时间。
其中，上述用户终端的上下文信息可以是用户终端的能力信息和/安全相关信息(例如：支持的安全算法等。而上述资源预留时间可以是告知备选小区对应的网络侧设备为此次可能存在的切换保留资源长短。且目标网络侧设备在达到该资源时效信息的时间后，没有被选择为目标小区的目标网络侧设备可以主动为用户终端预留的资源释放，以节约网络侧设备的资源。
可选地，上述向所述备选小区对应的网络侧设备发送预切换准备请求，包括：
通过网络侧设备之间直接连接的接口向所述备选小区对应的网络侧设备发送预切换准备请求；或者
通过核心网设备向所述备选小区对应的网络侧设备发送预切换准备请求。
该实施方式中，可以实现源网络侧设备与备选小区对应的网络侧设备之间通过直接相连的接口(例如：X2接口)或者核心网设备(例如：MME)发送预切换准备请求。
可选地，所述在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区，向所述备选小区对应的网络侧设备发送预切换准备请求的步骤之前，所述方法还包括：
在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区，并向所述备选小区对应的网络侧设备发送预切换准备请求；
根据所述用户终端对空口测量的结果为所述用户终端选择另至少一个备选小区，并向该备选小区对应的网络侧设备发送预切换准备请求。
该实施方式中，还可以删除之前选择的少一个备选小区中的一个或者多个小区，并向删除的一个或者多个小区对应的网络侧设备发送释放资源请求。
该实施方式中，可以实现在空口测量过程中可以更新源网络侧设备选择的至少一个备选小区，即在至少一个备选小区中添加新的备选小区或者删除备选小区。且向删除的一个或者多个小区的目标网络侧设备发送释放资源请求，以达到节约网络侧设备资源的目的。
例如：图4所示，步骤303选择的至少一个备选小区为网络侧设备2和 网络侧设备3的小区，而源网络侧设备为网络侧设备1，新添加的备选小区为网络侧设备4的小区，且网络侧设备之间通过MME进行通信。如图4所示，可以通过维护决策后，删除网络侧设备3的备选小区，其中，这里的维护决策就可以是基于所述空口测量结果更新上述至少一个备选小区；以及在切换决策后，请求网络侧设备2释放资源，即选择网络侧设备4的备选小区为目标小区。
需要说明的是，本实施例中，步骤304是可选的，即本实施例中，不执行步骤304也是可以实现的，例如：用户终端根据预先配置的测量参数进行测量，以及还可以根据预先配置的测量参数进行上报。且也不限定步骤304和步骤303的执行顺序，例如：可以是同步执行的，或者先后执行均是可以的。
步骤305、根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，其中，所述目标小区是基于所述用户终端对空口测量的结果从所述备选小区中选择的小区。
可选地，所述根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区的步骤，包括：
接收所述用户终端上报的从所述备选小区中选择目标小区的决策结果，并根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，所述目标小区是所述用户终端基于所述用户终端进行空口测量的空口测量结果确定的；
或者，
接收所述用户终端上报的所述用户终端进行空口测量的空口测量结果，基于所述空口测量结果从所述备选小区中选择目标小区，并根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，以及向所述用户终端发送从所述备选小区中选择所述目标小区的决策结果。
该实施方式中，可以实现目标小区由用户终端或者源网络侧设备决定。其中，用户终端在所述至少一个备选小区中选择目标小区可以是基于用户终端的空口测量结果进行选择的，例如：选择信号最好的小区作为目标小区， 或者还可以是结合上述第一切换条件进行选择，或者还可以是结合用户终端的预设条件进行选择，当然，也可以是结合各备选小区的优先级别进行选择的，对此本公开文本实施例不作限定。由于用户终端可以选择目标小区，从而可以减少源网络侧设备的功耗。同理，源网络侧设备选择目标小区同样可以减少用户终端的功耗。其中，源网络侧设备选择目标小区的方式可以参见用户终端选择目标小区的方式，此处不作赘述。
例如：如图5所示，切换决策(Handover(HO)decision)可以由用户终端决策，即图5中的切换决策流程1，用户终端向源网络侧设备发送切换通知；或者如图5中的切换决策流程2，用户终端向源网络侧设备测量上报，由源网络侧设备决策，并向用户终端发送切换命令。
可选地，所述述为所述用户终端选择至少一个备选小区，向所述备选小区对应的网络侧设备发送预切换准备请求的步骤之后，所根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区的步骤之前，所述方法还包括：
接收所述备选小区对应的网络侧设备发送的预切换准备应答消息；
向所述用户终端发送预切换准备应答消息。
其中，上述预切换准备应答消息表示发送所述预切换准备应答消息的网络侧设备已经完成切换准备可以是，备选小区对应的网络侧设备已经为所述用户终端预留资源，并建立到所述源网络侧设备的数据通道，所述数据通道用于所述用户终端的数据传输。例如：备选小区对应的网络侧设备接收到预切换准备请求后，就可以判断是否允许该用户终端接入，例如：根据用户终端的上下文判断是否允许接入，若允许，则为该用户终端预留相关资源，如C-RNTI(Cell Radio Network Temporary Identifier，小区无线网络临时标识)和/上行数据承载，其中，上行数据承载可以是上行数据S1承载。以及备选小区对应的网络侧设备还可以建立备选目标小区到源网络侧设备的数据通道以备后续的数据转发使用，其中，这里的数据通道可以是X2数据通道，即备选小区对应的网络侧设备与源网络侧设备之间直接连接的数据通道。
其中，上述向用户终端发送预切换准备应答消息可以是当源网络侧设备每接收到一个目标网络侧设备发送的预切换准备应答消息，就向用户终端发 送对应的预切换准备应答消息，这两个预切换准备应答消息可以是源网络侧设备转发的；或者可以是源网络侧设备接收到多个或者所有备选小区对应的网络侧设备发送的预切换准备应答消息，统一发送给用户终端，例如：可以是源网络侧设备基于各备选小区对应的网络侧设备发送的预切换准备应答消息生成的一预切换准备应答消息，或者可以是源网络侧设备将各备选小区对应的网络侧设备发送的预切换准备应答消息合并后发送给用户终端的。
该实施方式中，由于向用户终端发送的预切换准备应答消息，从而告知用户终端有一个或者多个备选小区已经完成切换准备，这样用户终端就可以选择目标小区进行小区切换。
可选地，向所述用户终端发送的预切换准备应答消息包括至少一个备选小区的应答信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数、切换接入优先级信息和第二切换条件中的至少一项；或者向所述用户终端发送的预切换准备应答消息包括至少一个备选小区的应答信息和各备选小区的切换接入优先级信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数和第二切换条件中的至少一项；
所述备选小区对应的网络侧设备发送的预切换准备应答消息包括如下内容中的至少一项：
为所述用户终端分配的随机接入信息、配置参数和第二切换条件。
其中，上述为所述用户终端分配的随机接入信息和配置参数可以是备选小区为用户终端分配的随机接入信息和配置参数，例如：如果源网络设备是每接收到一个备选小区对应的网络侧设备发送的预切换准备应答消息，就向用户终端发送的预切换准备应答消息，这样该预切换准备应答消息就包括一个备选小区的应答信息。如果是统一发送，该预切换准备应答消息就包括多个备选小区的应答信息。
该实施方式中，由于通过上述预切换准备应答消息可以通知用户终端至少一个备选小区的应答信息，从而用户终端可以基于应答信息包括的参数配置，合理选择目标小区或者进行上报，以提高小区切换的效率。
可选地，各备选小区的应答信息包括的随机接入信息包括：该备选小区 为所述用户终端分配的用户标识符；
所述备选小区对应的网络侧设备发送的预切换准备应答消息包括的随机接入信息包括：该备选小区对应的网络侧设备对应的备选小区为所述用户终端分配的用户标识符。
其中，上述用户标识符可以是用作接入身份识别的C-RNTI等随机接入相关信息。
可选地，各备选小区的应答信息包括的配置参数包括：该备选小区为所述用户终端分配的用作所述用户终端进行协议层配置的参数；
所述备选小区对应的网络侧设备发送的预切换准备应答消息包括的配置参数包括：该备选小区对应的网络侧设备对应的备选小区为所述用户终端分配的用作所述用户终端进行协议层配置的参数。
可选地，所述接收所述备选小区对应的网络侧设备发送的预切换准备应答消息之后，还包括：
根据各备选小区的资源准备情况，以及所述用户终端的空口测量结果，确定所述各备选小区的切换接入优先级信息。
例如：源网络侧设备根据各备选小区的资源准备情况，以及用户终端的测量监控情况安排优先级，如按照资源状况进行优先级决定。
可选地，每个备选小区的第二切换条件包括用于表示该备选小区的资源预留时间的资源时效信息，还包括如下内容中的至少一项：
在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第十三门限，和/或，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第十三门限；
在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的第五预设数量的窄波束的信号能量或信号质量的加权平均值小于第十四门限，或/和，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的第六预设数量的窄波束的信号能量或信号质量的加权平均值大于第十五门限；
在服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质 量的加权平均值小于第十六门限，和/或，所述用户终端测量到的该备选小区所有的窄波束的信号能量或信号质量的加权平均值大于第十七门限；
在服务小区中所述用户终端测量到的所有的宽波束的信号能量或信号质量的加权平均值小于第十八门限，和/或，所述用户终端测量到的该备选小区所有的宽波束的信号能量或信号质量的加权平均值大于第十九门限；
在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第二十门限，和/或，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第二十一门限；
在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的第七预设数量的宽波束的信号能量或信号质量的加权平均值小于第二十二门限，或/和，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的第八预设数量的宽波束的信号能量或信号质量的加权平均值大于第二十三门限；
其中，若所述预切换命令包括第一切换条件，且所述用户终端的空口测量结果满足一个或者多个备选小区的第二切换条件时，则所述用户终端按照所述一个或者多个备选小区的第二切换条件进行上报或者选择所述目标小区。
其中，上述资源时效信息可以是告知用户终端各备选小区在切换准备过程中给用户终端预留的资源时效，如一个计时器(timer)时长，当超时后，用户终端不能将该备选小区选为目标小区。且备选小区对应的网络侧设备在达到该资源时效信息的时间后，没有被选择为目标小区的目标网络侧设备可以主动为用户终端预留的资源释放，以节约网络侧设备的资源。
另外，如果上述预切换命令包括第一切换条件，且所述用户终端的空口测量结果满足一个或者多个备选小区的第二切换条件时，则所述用户终端按照所述一个或者多个备选小区的第二切换条件进行上报或者选择所述目标小区。即这两个条件同时存在时，以第二切换条件为准，由于第二切换条件是备选小区对应的网络侧设备决定的，这样用户终端在进行小区切换时更加容易选择到合适的小区进行切换，以提高用户终端的业务性能。
可选地，上述根据目标小区对应的网络侧设备返回的预切换准备应答， 控制所述用户终端切换至所述目标小区的步骤，包括：
若所述用户终端对空口测量的结果表示多个备选小区满足所述第二切换条件，且接收到所述多个备选小区对应的网络侧设备发送的预切换准备应答，则根据所述多个备选小区的切换接入优先级信息，选择目标小区，并控制所述用户终端切换至所述目标小区；或者
若所述用户终端对空口测量的结果表示一个备选小区满足所述第二切换条件，且未接收到该备选小区对应的网络侧设备返回的预切换准备应答，则将该备选小区作为目标小区，等接收到所述目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区。
该实施方式中，可以实现若多个备选小区满足切换条件，则根据各备选小区的切换接入优先级信息，选择目标小区，以实现选择优先级别高的备选小区作为目标小区，以提高用户终端切换后的业务性能。
另外，该实施方式中，由于目标小区没有完成切换准备时，挂起切换流程，从而不需要进行其他额外的操作，在目标小区完成切换准备后，就可以直接进行切换，以降低网络侧设备的功耗。
可选地，所述根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区的步骤之后，所述方法还包括：
通过网络侧设备之间的接口，向所述备选小区中除所述目标小区之外的备选小区对应的网络侧设备发送释放资源请求；或者
通过核心网设备，向所述备选小区中除所述目标小区之外的备选小区对应的网络侧设备发送释放资源请求。
该实施方式中，可以实现在进行小区切换后，就可以向上述至少一个备选小区中不是目标小区的网络侧设备发送释放资源请求，从而接收到该请求的网络侧设备就会释放为用户终端预留的资源，以过到节约网络侧设备资源的目的。且发送的方式可以有两种，一种是通过网络侧设备之间的接口，另一种是通过核心网设备。
需要说明的是，本公开文本实施例中，上述介绍的多种可选的实施方式可以相互结合实现，例如：图6或者图7所示：
在图6所示的举例中，源网络侧设备为网络侧设备1，网络侧设备2和 网络侧设备3为备选小区对应的网络侧设备，网络侧设备1与网络侧设备2和网络侧设备3具备直接连接接口，如X2接口。该举例中，包括如下步骤：
A1、用户终端测量上报，例如：当用户终端测量服务小区信号能量(RSRP)或/和信号质量(RSRQ)或/和邻小区信号能量(RSRP)或信号质量(RSRQ)满足预设条件A时，触发流程，并向服务小区发送测量报告。
B1、网络侧设备1接收到测量报告后，进行切换预判，以确定备选目标小区。
A2、网络侧设备1向用户终端发送预切换命令。
B2、网络侧设备1向网络侧设备2和网络侧设备3发送预切换准备请求。
B3、网络侧设备2和网络侧设备3进行接入控制和资源准备，即进行切换准备。
B4、网络侧设备2在切换准备完成后，向网络侧设备1发送的预切换准备应答，以及网络侧设备3在切换准备完成后，向网络侧设备1发送的预切换准备应答。
A3、用户终端进行空口测量。
A4、在接收到网络侧设备2和/或网络侧设备3发送的预切换准备应答后，网络侧设备1向用户终端发送对应的预切换准备应答。
在上述步骤之后，用户终端与网络侧设备1之间就可以进行切换决策，之后，就可以向网络侧设备2或者网络侧设备3发送资源释放指示。
在图7所示的举例中，源网络侧设备为网络侧设备1，网络侧设备2和网络侧设备3为备选小区对应的网络侧设备，网络侧设备1与网络侧设备2和网络侧设备3通过相关的信令连接需要由MME中转。该举例中，包括如下步骤：
A1、用户终端测量上报，例如：当用户终端测量服务小区信号能量(RSRP)或/和信号质量(RSRQ)或/和邻小区信号能量(RSRP)或信号质量(RSRQ)满足预设条件A时，触发流程，并向服务小区发送测量报告。
B1、网络侧设备1接收到测量报告后，进行切换预判，以确定备选目标小区。
A2、网络侧设备1向用户终端发送预切换命令。
B2、网络侧设备1向MME发送预切换准备请求。
B3、MME向网络侧设备2和网络侧设备3发送预切换准备请求。
B4、网络侧设备2和网络侧设备3进行接入控制和资源准备，即进行切换准备。
B5、网络侧设备2在切换准备完成后，向MME发送的预切换准备应答，以及网络侧设备3在切换准备完成后，向MME发送的预切换准备应答。
B6、MME向网络侧设备1发送的预切换准备应答。
A3、用户终端进行空口测量。
A4、在接收到网络侧设备2和/或网络侧设备3发送的预切换准备应答后，网络侧设备1向用户终端发送对应的预切换准备应答。
在上述步骤之后，用户终端与网络侧设备1之间就可以进行切换决策，之后，就可以通过MME向网络侧设备2或者网络侧设备3发送资源释放指示，以节约网络侧设备的资源。
参见图8，图8是本公开文本一些实施例提供的又一种小区切换方法的流程图，该方法应用于用户终端，如图8所示，包括以下步骤：
步骤801、在用户终端需要进行小区切换时，进行空口测量，获得空口测量结果；
步骤802、基于所述空口测量结果，向目标小区发起接入；
其中，所述空口测量结果用于在至少一个备选小区中确定所述目标小区，所述至少一个备选小区是源网络侧设备确定所述用户终端需要进行小区切换时，为所述用户终端选择的小区。
可选地，所述在用户终端需要进行小区切换时，接收源网络侧设备发送的预切换命令的步骤之前，所述方法还包括：
向所述源网络侧设备上报第一测量结果，供所述源网络侧设备确定所述用户终端是否需要进行小区切换，并在所述第一测量结果满足用于触发小区切换的预设条件时，确定所述用户终端是否需要进行小区切换；所述第一测量结果包括如下内容中的至少一项：
所述用户终端的服务小区的信号能量信息、所述服务小区的信号质量信息、所述服务小区的邻小区的信号能量信息和所述邻小区的信号质量信息。
可选地，所述用户终端的服务小区的信号能量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
所述服务小区的信号质量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息；
所述服务小区的邻小区的信号能量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
所述服务小区的邻小区的信号质量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息。
可选地，所述至少一个备选小区包括：
若所述第一测量结果包括所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，所述源网络侧设备基于所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，在所述服务小区的邻小区中选择的至少一个备选小区；
或者，
若所述第一测量结果未包括所述服务小区的信号能量信息和/或所述服务小区的信号质量信息，所述源网络侧设备预测所述用户终端的方向信息，基于所述方向信息在预先保存的邻区列表中选择的至少一个备选小区。
可选地，所述在用户终端需要进行小区切换时，进行空口测量，获得空口测量结果的步骤，包括：
在用户终端需要进行小区切换时，向所述用户终端发送预切换命令，基于所述预切换命令进行空口测量，获得空口测量结果；
所述预切换命令包括如下内容中的至少一项：
空口监控测量参数、第一切换条件和资源时效信息。
可选地，所述空口监控测量参数包括：空口监控测量小区和/或测量配置参数，所述空口监控测量小区包括所述服务小区和所述邻小区，所述邻小区包括所述至少一个备选小区，且所述测量配置参数包括测量频率、测量周期和测量上报条件中的至少一项。
可选地，所述第一切换条件包括如下内容中的至少一项：
在所述服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第一门限，和/或，所述用户终端测量到的所述邻小区信号中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第二门限；
在所述服务小区中所述用户终端测量到的窄波束中的信号能量或信号质量最好的第一预设数量的窄波束的信号能量或信号质量的加权平均值小于第三门限，或/和，所述用户终端测量到的所述邻小区中的窄波束中信号能量或信号质量最好的第二预设数量的窄波束的信号能量或信号质量的加权平均值大于第四门限；
在所述服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第五门限，和/或，所述用户终端测量到的所述邻小区所有的窄波束的信号能量或信号质量的加权平均值大于第六门限；
在所述服务小区中所述用户终端测量的所有的宽波束的信号能量或信号质量的加权平均值小于第七门限，和/或，所述用户终端测量到的所述邻小区所有的宽波束的信号能量或信号质量的加权平均值大于第八门限；
在所述服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第九门限，和/或，所述用户终端测量到的所述邻小区信号中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第十门限；
在所述服务小区中所述用户终端测量到的宽波束中的信号能量或信号质量最好的第三预设数量的宽波束的信号能量或信号质量的加权平均值小于第十一门限，或/和，所述用户终端测量到的所述邻小区中的宽波束中信号能量或信号质量最好的第四预设数量的宽波束的信号能量或信号质量的加权平均值大于第十二门限。
可选地，所述资源时效信息表示所述至少一个备选小区为所述终端预留资源的有效时间。
可选地，所述进行空口测量，获得空口测量结果的步骤之后，所述基于所述空口测量结果，向目标小区发起接入的步骤之前，所述方法还包括：
基于所述空口测量结果从所述备选小区中选择所述目标小区，并向所述 源网络侧设备上报从所述备选小区中选择所述目标小区的决策结果；或者
向所述源网络侧设备上报所述空口测量结果，接收所述源网络侧设备发送的从所述备选小区中选择所述目标小区的决策结果，所述空口测量结果用于所述源网络侧设备从所述备选小区中选择所述目标小区。
可选地，所述进行空口测量，获得空口测量结果的步骤之后，在所述基于所述空口测量结果，向目标小区发起接入步骤之前，所述方法还包括：
接收所述源网络侧设备发送的预切换准备应答消息；
其中，所述预切换准备应答消息表示对应的备选小区对应的网络侧设备已经完成切换准备。
可选地，所述预切换准备应答消息包括至少一个备选小区的应答信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数、切换接入优先级信息和第二切换条件中的至少一项；或者
所述预切换准备应答消息包括至少一个备选小区的应答信息和各备选小区的切换接入优先级信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数和第二切换条件中的至少一项
可选地，所述备选小区的应答信息中的随机接入信息包括：该备选小区为所述用户终端分配的用户标识符。
可选地，所述备选小区的应答信息包括的配置参数包括：该备选小区为所述用户终端分配的用作所述用户终端进行协议层配置的参数。
可选地，所述各备选小区的切换接入优先级信息为源网络侧设备在接收到各备选小区对应的网络侧设备发送的预切换准备应答消息后，根据各备选小区的资源准备情况，以及所述用户终端的空口测量结果决定的。
可选地，每个备选小区的第二切换条件包括用于表示该备选小区的资源预留时间的资源时效信息，还包括如下内容中的至少一项：
在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第十三门限，和/或，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第十三门限；
在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好 的第五预设数量的窄波束的信号能量或信号质量的加权平均值小于第十四门限，或/和，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的第六预设数量的窄波束的信号能量或信号质量的加权平均值大于第十五门限；
在服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第十六门限，和/或，所述用户终端测量到的该备选小区所有的窄波束的信号能量或信号质量的加权平均值大于第十七门限；
在服务小区中所述用户终端测量到的所有的宽波束的信号能量或信号质量的加权平均值小于第十八门限，和/或，所述用户终端测量到的该备选小区所有的宽波束的信号能量或信号质量的加权平均值大于第十九门限；
在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第二十门限，和/或，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第二十一门限；
在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的第七预设数量的宽波束的信号能量或信号质量的加权平均值小于第二十二门限，或/和，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的第八预设数量的宽波束的信号能量或信号质量的加权平均值大于第二十三门限；
其中，若所述预切换命令包括第一切换条件，且所述用户终端的空口测量结果满足一个或者多个备选小区的第二切换条件时，则所述用户终端按照所述一个或者多个备选小区的第二切换条件进行上报或者选择所述目标小区。
可选地，所述基于所述空口测量结果，向目标小区发起接入的步骤，包括：
若所述至少一个备选小区中满足所述第二切换条件的小区已经完成切换准备，则根据所述各备选小区的切换接入优先级信息，选择目标小区，并向所述目标小区发起接入；或者
若所述至少一个备选小区中满足所述第二切换条件的小区未完成切换准备，则挂起切换流程，将所述至少一个备选小区中满足所述第二切换条件的 小区作为目标小区，等所述目标小区完成切换准备后，向所述目标小区发起接入。
可选地，所述进行空口测量，获得空口测量结果的步骤之后，所述基于所述空口测量结果，向目标小区发起接入的步骤之前，所述方法还包括：
向所述源网络侧设备发送所述空口测量结果；
其中，所述空口测量结果用于：所述源网络侧设备在所述至少一个备选小区添加新的备选小区，并向所述新的备选小区发送预切换准备请求；和/或
所述空口测量结果用于：所述源网络侧设备，删除所述至少一个备选小区中的一个或者多个小区，并向删除的一个或者多个小区对应的网络侧设备发送释放资源请求；
所述空口测量结果包括所述用户终端对所述服务小区和所述服务小区的邻小区进行空口测量的结果。
需要说明的是，本实施例作为与参照图2描述的实施例和参照图3-7描述的实施例对应的用户终端的实施方式，其具体的实施方式可以参见参照图2描述的实施例和参照图3-7描述的实施例相关说明，以及达到相同的有益效果，为了避免重复说明，此处不再赘述。
参见图9，图9是本公开文本一些实施例提供的又一种小区切换方法的流程图，该方法应用于目标网络侧设备，如图9所示，包括以下步骤：
步骤901、在用户终端需要进行小区切换时，接收源网络侧设备发送的预切换准备请求；
步骤902、基于所述预切换准备请求进行切换准备；
步骤903、若所述目标网络侧设备的小区为目标小区，则执行所述用户终端的小区切换；
其中，所述目标网络侧设备的小区为所述源网络侧设备为所述用户终端选择的至少一个备选小区中的小区，所述目标小区是基于所述用户终端进行空口测量得到的空口测量结果确定的，且所述用户终端进行空口测量是基于所述源网络侧设备发送的预切换命令而进行的。
可选地，所述至少一个备选小区包括：
若所述用户终端上报的第一测量结果包括所述用户终端的服务小区的邻 小区的信号能量信息和/或所述邻小区的信号质量信息，所述源网络侧设备基于所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，从所述服务小区的邻小区中选择的至少一个备选小区；
或者，
若所述用户终端上报的第一测量结果未包括所述服务小区的信号能量信息和/或所述服务小区的信号质量信息，所述源网络侧设备预测所述用户终端的方向信息，基于所述方向信息从预先保存的邻区列表中选择的至少一个备选小区。
可选地，所述目标小区是所述用户终端基于所述用户终端进行空口测量得到的空口测量结果，从所述至少一个备选小区中选择的目标小区；或者
所述目标小区是所述源网络侧设备接收所述用户终端上报的所述用户终端进行空口测量得到的空口测量结果，基于所述空口测量结果从所述至少一个备选小区中选择的小区。
可选地，所述基于所述预切换准备请求进行切换准备的步骤之后，所述若所述目标网络侧设备的小区为目标小区，则执行所述用户终端的小区切换的步骤之前，所述方法还包括：
若所述目标网络侧设备已经完成切换准备，则向所述源网络侧设备发送预切换准备应答消息。
可选地，所述预切换准备应答消息包括如下内容中的至少一项：
为所述用户终端分配的随机接入信息、配置参数和第二切换条件。
可选地，所述随机接入信息包括：目标网络侧设备为所述用户终端分配的用户标识符。
可选地，所述配置参数包括：所述目标网络侧设备为所述用户终端分配的用作所述用户终端进行协议层配置的参数。
可选地，所述第二切换条件包括所述目标网络侧设备的资源预留时间的资源时效信息，还包括如下内容中的至少一项：
在所述服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第十三门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区中的窄波束中信号能量或信号 质量最好的一个窄波束的信号能量或信号质量大于第十三门限；或者
在所述服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的第五预设数量的窄波束的信号能量或信号质量的加权平均值小于第十四门限，或/和，所述用户终端测量到的所述目标网络侧设备对应的小区中的窄波束中信号能量或信号质量最好的第六预设数量的窄波束的信号能量或信号质量的加权平均值大于第十五门限；
在所述服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第十六门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区所有的窄波束的信号能量或信号质量的加权平均值大于第十七门限；
在所述服务小区中所述用户终端测量到的所有的宽波束的信号能量或信号质量的加权平均值小于第十八门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区所有的宽波束的信号能量或信号质量的加权平均值大于第十九门限；
在所述服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第二十门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第二十一门限；
在所述服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的第七预设数量的宽波束的信号能量或信号质量的加权平均值小于第二十二门限，或/和，所述用户终端测量到的所述目标网络侧设备对应的小区中的宽波束中信号能量或信号质量最好的第八预设数量的宽波束的信号能量或信号质量的加权平均值大于第二十三门限。
可选地，所述预切换准备请求包括所述用户终端的上下文信息和/或资源预留时间。
可选地，所述基于所述预切换准备请求进行切换准备的步骤，包括：
基于所述预切换准备请求，为所述用户终端预留资源，并建立到所述源网络侧设备的数据通道，所述数据通道用于所述用户终端的数据传输。
可选地，所述接收源网络侧设备发送的预切换准备请求的步骤，包括：
通过网络侧设备之间直接连接的接口接收所述源网络侧设备发送的预切换准备请求；或者
通过核心网设备接收所述源网络侧设备发送的预切换准备请求。
可选地，所述若所述目标网络侧设备的小区为目标小区，则执行所述用户终端的小区切换的步骤之后，所述方法还包括：
若所述目标网络侧设备的小区不为所述目标小区，则通过网络侧设备之间的接口，接收所述源网络侧设备发送的释放资源请求，并释放为所述用户终端预留的资源；或者
若所述目标网络侧设备的小区不为所述目标小区，则通过核心网设备，接收所述源网络侧设备发送的释放资源请求，并释放为所述用户终端预留的资源。
需要说明的是，本实施例作为与参照图2描述的实施例和参照图3-7描述的实施例对应的目标网络侧设备的实施方式，其具体的实施方式可以参见参照图2描述的实施例和参照图3-7描述的实施例相关说明，以及达到相同的有益效果，为了避免重复说明，此处不再赘述。
参见图10，图10是本公开文本一些实施例提供的一种源网络侧设备的结构图，能够实现参照图2描述的实施例和参照图3-7描述的实施例中的小区切换方法的细节，并达到相同的效果。如图10所示，源网络侧设备1000包括：备选小区选择模块1001、第一发送模块1002和控制模块1003，其中：
备选小区选择模块1001，用于在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区；
第一发送模块1002，用于向所述备选小区对应的网络侧设备发送预切换准备请求；
控制模块1003，用于根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，其中，所述目标小区是基于所述用户终端对空口测量的结果从所述备选小区中选择的小区。
可选地，如图11所示，源网络侧设备1000还包括：
第一接收模块1004，用于接收所述用户终端上报的第一测量结果；
切换确定模块1005，用于当所述第一测量结果满足切换触发条件，则确 定所述用户终端需要进行小区切换；
其中，所述第一测量结果满足用于触发小区切换的预设条件，且所述第一测量结果包括如下内容中的至少一项：
所述用户终端的服务小区的信号能量信息、所述服务小区的信号质量信息、所述服务小区的邻小区的信号能量信息和所述邻小区的信号质量信息。
可选地，所述用户终端的服务小区的信号能量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
所述服务小区的信号质量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息；
所述服务小区的邻小区的信号能量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
所述服务小区的邻小区的信号质量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息。
可选地，备选小区选择模块1001，具体用于若所述第一测量结果包括所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，则基于所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，在所述服务小区的邻小区中选择所述至少一个备选小区；或者
若所述第一测量结果未包括所述服务小区的信号能量信息和/或所述服务小区的信号质量信息，则预测所述用户终端的方向信息，基于所述方向信息在预先保存的邻区列表中选择所述至少一个备选小区。
可选地，如图12所示，所述源网络侧设备还包括：
第二发送模块1006，用于向所述用户终端发送预切换命令，其中，所述预切换命令包括如下内容中的至少一项：
空口监控测量参数、第一切换条件和资源时效信息。
可选地，所述空口监控测量参数包括：空口监控测量小区和/或测量配置参数，所述空口监控测量小区包括所述服务小区和所述邻小区，所述邻小区包括所述至少一个备选小区，且所述测量配置参数包括测量频率、测量周期和测量上报条件中的至少一项。
可选地，所述第一切换条件包括如下内容中的至少一项：
在所述服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第一门限，和/或，所述用户终端测量到的所述邻小区信号中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第二门限；
在所述服务小区中所述用户终端测量到的窄波束中的信号能量或信号质量最好的第一预设数量的窄波束的信号能量或信号质量的加权平均值小于第三门限，或/和，所述用户终端测量到的所述邻小区中的窄波束中信号能量或信号质量最好的第二预设数量的窄波束的信号能量或信号质量的加权平均值大于第四门限；
在所述服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第五门限，和/或，所述用户终端测量到的所述邻小区所有的窄波束的信号能量或信号质量的加权平均值大于第六门限；
在所述服务小区中所述用户终端测量的所有的宽波束的信号能量或信号质量的加权平均值小于第七门限，和/或，所述用户终端测量到的所述邻小区所有的宽波束的信号能量或信号质量的加权平均值大于第八门限；
在所述服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第九门限，和/或，所述用户终端测量到的所述邻小区信号中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第十门限；
在所述服务小区中所述用户终端测量到的宽波束中的信号能量或信号质量最好的第三预设数量的宽波束的信号能量或信号质量的加权平均值小于第十一门限，或/和，所述用户终端测量到的所述邻小区中的宽波束中信号能量或信号质量最好的第四预设数量的宽波束的信号能量或信号质量的加权平均值大于第十二门限。
可选地，所述资源时效信息表示所述至少一个备选小区为所述终端预留资源的有效时间。
可选地，所述控制模块1003，具体用于接收所述用户终端上报的从所述备选小区中选择目标小区的决策结果，并根据目标小区对应的网络侧设备返 回的预切换准备应答，控制所述用户终端切换至所述目标小区，所述目标小区是所述用户终端基于所述用户终端进行空口测量的空口测量结果确定的；
或者，
接收所述用户终端上报的所述用户终端进行空口测量的空口测量结果，基于所述空口测量结果从所述备选小区中选择目标小区，并根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，以及向所述用户终端发送从所述备选小区中选择所述目标小区的决策结果。
可选地，如图13所示，源网络侧设备1000还包括：
应答消息接收模块1007，用于接收所述备选小区对应的网络侧设备发送的预切换准备应答消息；
应答消息发送模块1008，用于向所述用户终端发送预切换准备应答消息。
可选地，向所述用户终端发送的预切换准备应答消息包括至少一个备选小区的应答信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数、切换接入优先级信息和第二切换条件中的至少一项；或者向所述用户终端发送的预切换准备应答消息包括至少一个备选小区的应答信息和各备选小区的切换接入优先级信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数和第二切换条件中的至少一项；
所述备选小区对应的网络侧设备发送的预切换准备应答消息包括如下内容中的至少一项：
为所述用户终端分配的随机接入信息、配置参数和第二切换条件。
可选地，所述备选小区的应答信息中的随机接入信息包括：该备选小区为所述用户终端分配的用户标识符；
所述备选小区对应的网络侧设备发送的预切换准备应答消息包括的随机接入信息包括：该备选小区对应的网络侧设备对应的备选小区为所述用户终端分配的用户标识符。
可选地，所述备选小区的应答信息中的配置参数包括：该备选小区为所述用户终端分配的用作所述用户终端进行协议层配置的参数；
所述备选小区对应的网络侧设备发送的预切换准备应答消息包括的配置参数包括：该备选小区对应的网络侧设备对应的备选小区为所述用户终端分配的用作所述用户终端进行协议层配置的参数。
可选地，如图14所示，源网络侧设备1000还包括：
优先级确定模块1009，用于根据各备选小区的资源准备情况，以及所述用户终端的空口测量结果，确定所述各备选小区的切换接入优先级信息。
可选地，每个备选小区的第二切换条件包括用于表示该备选小区的资源预留时间的资源时效信息，还包括如下内容中的至少一项：
在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第十三门限，和/或，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第十三门限；
在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的第五预设数量的窄波束的信号能量或信号质量的加权平均值小于第十四门限，或/和，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的第六预设数量的窄波束的信号能量或信号质量的加权平均值大于第十五门限；
在服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第十六门限，和/或，所述用户终端测量到的该备选小区所有的窄波束的信号能量或信号质量的加权平均值大于第十七门限；
在服务小区中所述用户终端测量到的所有的宽波束的信号能量或信号质量的加权平均值小于第十八门限，和/或，所述用户终端测量到的该备选小区所有的宽波束的信号能量或信号质量的加权平均值大于第十九门限；
在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第二十门限，和/或，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第二十一门限；
在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的第七预设数量的宽波束的信号能量或信号质量的加权平均值小于第二十二 门限，或/和，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的第八预设数量的宽波束的信号能量或信号质量的加权平均值大于第二十三门限；
其中，若所述预切换命令包括第一切换条件，且所述用户终端的空口测量结果满足一个或者多个备选小区的第二切换条件时，则所述用户终端按照所述一个或者多个备选小区的第二切换条件进行上报或者选择所述目标小区。
可选地，所述控制模块1003，具体用于若所述用户终端对空口测量的结果表示多个备选小区满足所述第二切换条件，且接收到所述多个备选小区对应的网络侧设备发送的预切换准备应答，则根据所述多个备选小区的切换接入优先级信息，选择目标小区，并控制所述用户终端切换至所述目标小区；或者
若所述用户终端对空口测量的结果表示一个备选小区满足所述第二切换条件，且未接收到该备选小区对应的网络侧设备返回的预切换准备应答，则将该备选小区作为目标小区，等接收到所述目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区。
可选地，所述预切换准备请求包括所述用户终端的上下文信息和/或资源预留时间。
可选地，所述第一发送模块1002，具体用于通过网络侧设备之间直接连接的接口向所述备选小区对应的网络侧设备发送预切换准备请求；或者
通过核心网设备向所述备选小区对应的网络侧设备发送预切换准备请求。
可选地，备选小区选择模块1001，具体用于在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区，并向所述备选小区对应的网络侧设备发送预切换准备请求；
根据所述用户终端对空口测量的结果为所述用户终端选择另至少一个备选小区，并向该备选小区对应的网络侧设备发送预切换准备请求。
可选地，如图15所示，源网络侧设备1000还包括：
第五发送模块1010，用于通过网络侧设备之间的接口，向所述备选小区中除所述目标小区之外的备选小区对应的网络侧设备发送释放资源请求；或者
第六发送模块1011，用于通过核心网设备，向所述备选小区中除所述目标小区之外的备选小区对应的网络侧设备发送释放资源请求。
需要说明的是，本实施例中上述源网络侧设备1000可以是本公开文本实施例中方法实施例中任意实施方式的源网络侧设备，本公开文本实施例中方法实施例中网络侧设备源的任意实施方式都可以被本实施例中的上述源网络侧设备1000所实现，以及达到相同的有益效果，此处不再赘述。
参见图16，图16是本公开文本一些实施例提供的一种用户终端的结构图，能够实现参照图8描述的实施例中的小区切换方法的细节，并达到相同的效果。如图16所示，用户终端1600包括：空口测量模块16∶1、接入模块1602，其中：
空口测量模块1601，用于在用户终端需要进行小区切换时，进行空口测量，获得空口测量结果；
接入模块1602，用于基于所述空口测量结果，向目标小区发起接入；
其中，所述空口测量结果用于在至少一个备选小区中确定所述目标小区，所述至少一个备选小区是源网络侧设备确定所述用户终端需要进行小区切换时，为所述用户终端选择的小区。
可选地，如图17所示，所述用户终端1600还包括：
第一测量上报模块1603，用于向所述源网络侧设备上报第一测量结果，供所述源网络侧设备确定所述用户终端是否需要进行小区切换，并在所述第一测量结果满足用于触发小区切换的预设条件时，确定所述用户终端是否需要进行小区切换；所述第一测量结果包括如下内容中的至少一项：
所述用户终端的服务小区的信号能量信息、所述服务小区的信号质量信息、所述服务小区的邻小区的信号能量信息和所述邻小区的信号质量信息。
可选地，所述用户终端的服务小区的信号能量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
所述服务小区的信号质量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息；
所述服务小区的邻小区的信号能量信息包括所述用户终端对所述邻小区 的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
所述服务小区的邻小区的信号质量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息。
可选地，所述至少一个备选小区包括：
若所述第一测量结果包括所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，所述源网络侧设备基于所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，在所述服务小区的邻小区中选择的至少一个备选小区；
或者，
若所述第一测量结果未包括所述服务小区的信号能量信息和/或所述服务小区的信号质量信息，所述源网络侧设备预测所述用户终端的方向信息，基于所述方向信息在预先保存的邻区列表中选择的至少一个备选小区。
可选地，所述空口测量模块，具体用于在用户终端需要进行小区切换时，向所述用户终端发送预切换命令，基于所述预切换命令进行空口测量，获得空口测量结果；
所述预切换命令包括如下内容中的至少一项：
空口监控测量参数、第一切换条件和资源时效信息。
可选地，所述空口监控测量参数包括：空口监控测量小区和/或测量配置参数，所述空口监控测量小区包括所述服务小区和所述邻小区，所述邻小区包括所述至少一个备选小区，且所述测量配置参数包括测量频率、测量周期和测量上报条件中的至少一项。
可选地，所述第一切换条件包括如下内容中的至少一项：
在所述服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第一门限，和/或，所述用户终端测量到的所述邻小区信号中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第二门限；
在所述服务小区中所述用户终端测量到的窄波束中的信号能量或信号质量最好的第一预设数量的窄波束的信号能量或信号质量的加权平均值小于第三门限，或/和，所述用户终端测量到的所述邻小区中的窄波束中信号能量或 信号质量最好的第二预设数量的窄波束的信号能量或信号质量的加权平均值大于第四门限；
在所述服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第五门限，和/或，所述用户终端测量到的所述邻小区所有的窄波束的信号能量或信号质量的加权平均值大于第六门限；
在所述服务小区中所述用户终端测量的所有的宽波束的信号能量或信号质量的加权平均值小于第七门限，和/或，所述用户终端测量到的所述邻小区所有的宽波束的信号能量或信号质量的加权平均值大于第八门限；
在所述服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第九门限，和/或，所述用户终端测量到的所述邻小区信号中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第十门限；
在所述服务小区中所述用户终端测量到的宽波束中的信号能量或信号质量最好的第三预设数量的宽波束的信号能量或信号质量的加权平均值小于第十一门限，或/和，所述用户终端测量到的所述邻小区中的宽波束中信号能量或信号质量最好的第四预设数量的宽波束的信号能量或信号质量的加权平均值大于第十二门限。
可选地，所述资源时效信息表示所述至少一个备选小区为所述终端预留资源的有效时间。
可选地，如图18所示，所述用户终端1600还包括：
决策结果上报模块1604，用于基于所述空口测量结果从所述备选小区中选择所述目标小区，并向所述源网络侧设备上报从所述备选小区中选择所述目标小区的决策结果；或者
第二测量上报模块1605，用于向所述源网络侧设备上报所述空口测量结果，接收所述源网络侧设备发送的从所述备选小区中选择所述目标小区的决策结果，所述空口测量结果用于所述源网络侧设备从所述备选小区中选择所述目标小区。
可选地，如图19所示，所述用户终端1600还包括：
应答消息接收模块1606，用于接收所述源网络侧设备发送的预切换准备 应答消息；
其中，所述预切换准备应答消息表示对应的备选小区对应的网络侧设备已经完成切换准备。
可选地，所述预切换准备应答消息包括至少一个备选小区的应答信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数、切换接入优先级信息和第二切换条件中的至少一项；或者
所述预切换准备应答消息包括至少一个备选小区的应答信息和各备选小区的切换接入优先级信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数和第二切换条件中的至少一项。
可选地，所述备选小区的应答信息中的随机接入信息包括：该备选小区为所述用户终端分配的用户标识符。
可选地，所述备选小区的应答信息包括的配置参数包括：该备选小区为所述用户终端分配的用作所述用户终端进行协议层配置的参数。
可选地，所述各备选小区的切换接入优先级信息为源网络侧设备在接收到各备选小区对应的网络侧设备发送的预切换准备应答消息后，根据各备选小区的资源准备情况，以及所述用户终端的空口测量结果决定的。
可选地，每个备选小区的第二切换条件包括用于表示该备选小区的资源预留时间的资源时效信息，还包括如下内容中的至少一项：
在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第十三门限，和/或，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第十三门限；
在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的第五预设数量的窄波束的信号能量或信号质量的加权平均值小于第十四门限，或/和，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的第六预设数量的窄波束的信号能量或信号质量的加权平均值大于第十五门限；
在服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第十六门限，和/或，所述用户终端测量到的该备选小区 所有的窄波束的信号能量或信号质量的加权平均值大于第十七门限；
在服务小区中所述用户终端测量到的所有的宽波束的信号能量或信号质量的加权平均值小于第十八门限，和/或，所述用户终端测量到的该备选小区所有的宽波束的信号能量或信号质量的加权平均值大于第十九门限；
在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第二十门限，和/或，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第二十一门限；
在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的第七预设数量的宽波束的信号能量或信号质量的加权平均值小于第二十二门限，或/和，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的第八预设数量的宽波束的信号能量或信号质量的加权平均值大于第二十三门限；
其中，若所述预切换命令包括第一切换条件，且所述用户终端的空口测量结果满足一个或者多个备选小区的第二切换条件时，则所述用户终端按照所述一个或者多个备选小区的第二切换条件进行上报或者选择所述目标小区。
可选地，所述接入模块1602，具体用于若所述至少一个备选小区中满足所述第二切换条件的小区已经完成切换准备，则根据所述各备选小区的切换接入优先级信息，选择目标小区，并向所述目标小区发起接入；或者
若所述至少一个备选小区中满足所述第二切换条件的小区未完成切换准备，则挂起切换流程，将所述至少一个备选小区中满足所述第二切换条件的小区作为目标小区，等所述目标小区完成切换准备后，向所述目标小区发起接入。
可选地，如图20所示，所述用户终端1600还包括：
第三测量上报模块1607，用于向所述源网络侧设备发送所述空口测量结果；
其中，所述空口测量结果用于：所述源网络侧设备在所述至少一个备选小区添加新的备选小区，并向所述新的备选小区发送预切换准备请求；和/或
所述空口测量结果用于：所述源网络侧设备，删除所述至少一个备选小 区中的一个或者多个小区，并向删除的一个或者多个小区对应的网络侧设备发送释放资源请求；
所述空口测量结果包括所述用户终端对所述服务小区和所述服务小区的邻小区进行空口测量的结果。
需要说明的是，本实施例中上述用户终端1600可以是本公开文本实施例中方法实施例中任意实施方式的用户终端，本公开文本实施例中方法实施例中用户终端的任意实施方式都可以被本实施例中的上述用户终端1600所实现，以及达到相同的有益效果，此处不再赘述。
参见图21，图21是本公开文本一些实施例提供的一种目标网络侧设备的结构图，能够实现参照图9描述的实施例中的小区切换方法的细节，并达到相同的效果。如图21所示，目标网络侧设备2100，包括：准备请求接收模块2101、切换准备模块2102和执行模块2103，其中：
准备请求接收模块2101，用于在用户终端需要进行小区切换时，接收源网络侧设备发送的预切换准备请求；
切换准备模块2102，用于基于所述预切换准备请求进行切换准备；
执行模块2103，用于若所述目标网络侧设备的小区为目标小区，则执行所述用户终端的小区切换；
其中，所述目标网络侧设备的小区为所述源网络侧设备为所述用户终端选择的至少一个备选小区中的小区，所述目标小区是基于所述用户终端进行空口测量得到的空口测量结果确定的，且所述用户终端进行空口测量是基于所述源网络侧设备发送的预切换命令而进行的。
可选地，所述至少一个备选小区包括：
若所述用户终端上报的第一测量结果包括所述用户终端的服务小区的邻小区的信号能量信息和/或所述邻小区的信号质量信息，所述源网络侧设备基于所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，从所述服务小区的邻小区中选择的至少一个备选小区；
或者，
若所述用户终端上报的第一测量结果未包括所述服务小区的信号能量信息和/或所述服务小区的信号质量信息，所述源网络侧设备预测所述用户终端 的方向信息，基于所述方向信息从预先保存的邻区列表中选择的至少一个备选小区。
可选地，所述目标小区是所述用户终端基于所述用户终端进行空口测量得到的空口测量结果，从所述至少一个备选小区中选择的目标小区；或者
所述目标小区是所述源网络侧设备接收所述用户终端上报的所述用户终端进行空口测量得到的空口测量结果，基于所述空口测量结果从所述至少一个备选小区中选择的小区。
可选地，如图22所示，目标网络侧设备2100还包括：
应答消息发送模块2104，用于若所述目标网络侧设备已经完成切换准备，则向所述源网络侧设备发送预切换准备应答消息。
可选地，所述预切换准备应答消息包括如下内容中的至少一项：
为所述用户终端分配的随机接入信息、配置参数和第二切换条件。
可选地，所述随机接入信息包括：目标网络侧设备为所述用户终端分配的用户标识符。
可选地，所述配置参数包括：所述目标网络侧设备为所述用户终端分配的用作所述用户终端进行协议层配置的参数。
可选地，所述第二切换条件包括所述目标网络侧设备的资源预留时间的资源时效信息，还包括如下内容中的至少一项：
在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第十三门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第十三门限；
在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的第五预设数量的窄波束的信号能量或信号质量的加权平均值小于第十四门限，或/和，所述用户终端测量到的所述目标网络侧设备对应的小区中的窄波束中信号能量或信号质量最好的第六预设数量的窄波束的信号能量或信号质量的加权平均值大于第十五门限；
在服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第十六门限，和/或，所述用户终端测量到的所述目标网 络侧设备对应的小区所有的窄波束的信号能量或信号质量的加权平均值大于第十七门限；
在服务小区中所述用户终端测量到的所有的宽波束的信号能量或信号质量的加权平均值小于第十八门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区所有的宽波束的信号能量或信号质量的加权平均值大于第十九门限；
在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第二十门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第二十一门限；
在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的第七预设数量的宽波束的信号能量或信号质量的加权平均值小于第二十二门限，或/和，所述用户终端测量到的所述目标网络侧设备对应的小区中的宽波束中信号能量或信号质量最好的第八预设数量的宽波束的信号能量或信号质量的加权平均值大于第二十三门限。
可选地，所述预切换准备请求包括所述用户终端的上下文信息和/或资源预留时间。
可选地，切换准备模块2102，具体用于基于所述预切换准备请求，为所述用户终端预留资源，并建立到所述源网络侧设备的数据通道，所述数据通道用于所述用户终端的数据传输。
可选地，准备请求接收模块2101，具体用于通过网络侧设备之间直接连接的接口接收所述源网络侧设备发送的预切换准备请求；或者
通过核心网设备接收所述源网络侧设备发送的预切换准备请求。
可选地，如图23所示，目标网络侧设备2100还包括：
第一释放模块2105，用于若所述目标网络侧设备的小区不为所述目标小区，则通过网络侧设备之间的接口，接收所述源网络侧设备发送的释放资源请求，并释放为所述用户终端预留的资源；或者
第二释放模块2106，用于若所述目标网络侧设备的小区不为所述目标小区，则通过核心网设备，接收所述源网络侧设备发送的释放资源请求，并释 放为所述用户终端预留的资源。
需要说明的是，本实施例中上述目标网络侧设备2100可以是本公开文本实施例中方法实施例中任意实施方式的备选小区对应的网络侧设备，本公开文本实施例中方法实施例中备选小区对应的网络侧设备的任意实施方式都可以被本实施例中的上述目标网络侧设备2100所实现，以及达到相同的有益效果，此处不再赘述。
参见图24，图24是本公开文本一些实施例提供的另一种源网络侧设备的结构图，能够实现参照图2描述的实施例和参照图3-7描述的实施例中的小区切换方法的细节，并达到相同的效果。如图24所示，该源网络侧设备2400包括：处理器2401、收发机2402、存储器2403、用户接口2404和总线接口，其中：
处理器2401，用于读取存储器2403中的程序，执行下列过程：
在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区，向所述备选小区对应的网络侧设备发送预切换准备请求；
根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，其中，所述目标小区是基于所述用户终端对空口测量的结果从所述备选小区中选择的小区。
其中，收发机2402，用于在处理器2401的控制下接收和发送数据。
在图24中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器2401代表的一个或多个处理器和存储器2403代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起。总线接口提供接口。收发机2402可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口2404还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器2401负责管理总线架构和通常的处理，存储器2403可以存储处理器2401在执行操作时所使用的数据。
可选地，为所述用户终端选择至少一个备选小区，向所述备选小区对应 的网络侧设备发送预切换准备请求之前，处理器2401还用于：
接收所述用户终端上报的第一测量结果；
当所述第一测量结果满足切换触发条件，则确定所述用户终端需要进行小区切换；
其中，所述第一测量结果包括如下内容中的至少一项：
所述用户终端的服务小区的信号能量信息、所述服务小区的信号质量信息、所述服务小区的邻小区的信号能量信息和所述邻小区的信号质量信息。
可选地，所述用户终端的服务小区的信号能量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
所述服务小区的信号质量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息；
所述服务小区的邻小区的信号能量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
所述服务小区的邻小区的信号质量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息。
可选地，处理器2401执行的为所述用户终端选择至少一个备选小区，包括：
若所述第一测量结果包括所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，则基于所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，在所述服务小区的邻小区中选择所述至少一个备选小区；或者
若所述第一测量结果未包括所述服务小区的信号能量信息和/或所述服务小区的信号质量信息，则预测所述用户终端的方向信息，基于所述方向信息在预先保存的邻区列表中选择所述至少一个备选小区。
可选地，所述为所述用户终端选择至少一个备选小区之后，所处理器2401还用于：
向所述用户终端发送预切换命令，其中，所述预切换命令包括如下内容中的至少一项：
空口监控测量参数、第一切换条件和资源时效信息。
可选地，所述空口监控测量参数包括：空口监控测量小区和/或测量配置参数，所述空口监控测量小区包括所述服务小区和所述邻小区，所述邻小区包括所述至少一个备选小区，且所述测量配置参数包括测量频率、测量周期和测量上报条件中的至少一项。
可选地，所述第一切换条件包括如下内容中的至少一项：
在所述服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第一门限，和/或，所述用户终端测量到的所述邻小区信号中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第二门限；
在所述服务小区中所述用户终端测量到的窄波束中的信号能量或信号质量最好的第一预设数量的窄波束的信号能量或信号质量的加权平均值小于第三门限，或/和，所述用户终端测量到的所述邻小区中的窄波束中信号能量或信号质量最好的第二预设数量的窄波束的信号能量或信号质量的加权平均值大于第四门限；
在所述服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第五门限，和/或，所述用户终端测量到的所述邻小区所有的窄波束的信号能量或信号质量的加权平均值大于第六门限；
在所述服务小区中所述用户终端测量的所有的宽波束的信号能量或信号质量的加权平均值小于第七门限，和/或，所述用户终端测量到的所述邻小区所有的宽波束的信号能量或信号质量的加权平均值大于第八门限；
在所述服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第九门限，和/或，所述用户终端测量到的所述邻小区信号中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第十门限；
在所述服务小区中所述用户终端测量到的宽波束中的信号能量或信号质量最好的第三预设数量的宽波束的信号能量或信号质量的加权平均值小于第十一门限，或/和，所述用户终端测量到的所述邻小区中的宽波束中信号能量或信号质量最好的第四预设数量的宽波束的信号能量或信号质量的加权平均值大于第十二门限。
可选地，所述资源时效信息表示所述至少一个备选小区为所述终端预留资源的有效时间。
可选地，处理器2401执行的根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，包括：
接收所述用户终端上报的从所述备选小区中选择目标小区的决策结果，并根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，所述目标小区是所述用户终端基于所述用户终端进行空口测量的空口测量结果确定的；
或者，
接收所述用户终端上报的所述用户终端进行空口测量的空口测量结果，基于所述空口测量结果从所述备选小区中选择目标小区，并根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，以及向所述用户终端发送从所述备选小区中选择所述目标小区的决策结果。
可选地，为所述用户终端选择至少一个备选小区，向所述备选小区对应的网络侧设备发送预切换准备请求之后，所述根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区之前，处理器2401还用于：
接收所述备选小区对应的网络侧设备发送的预切换准备应答消息；
向所述用户终端发送预切换准备应答消息。
可选地，向所述用户终端发送的预切换准备应答消息包括至少一个备选小区的应答信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数、切换接入优先级信息和第二切换条件中的至少一项；或者向所述用户终端发送的预切换准备应答消息包括至少一个备选小区的应答信息和各备选小区的切换接入优先级信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数和第二切换条件中的至少一项；
所述备选小区对应的网络侧设备发送的预切换准备应答消息包括如下内容中的至少一项：
为所述用户终端分配的随机接入信息、配置参数和第二切换条件。
可选地，所述备选小区的应答信息中的随机接入信息包括：该备选小区为所述用户终端分配的用户标识符；
所述备选小区对应的网络侧设备发送的预切换准备应答消息包括的随机接入信息包括：该备选小区对应的网络侧设备对应的备选小区为所述用户终端分配的用户标识符。
可选地，所述备选小区的应答信息中的配置参数包括：该备选小区为所述用户终端分配的用作所述用户终端进行协议层配置的参数；
所述备选小区对应的网络侧设备发送的预切换准备应答消息包括的配置参数包括：该备选小区对应的网络侧设备对应的备选小区为所述用户终端分配的用作所述用户终端进行协议层配置的参数。
可选地，接收所述备选小区对应的网络侧设备发送的预切换准备应答消息之后，处理器2401还用于：
根据各备选小区的资源准备情况，以及所述用户终端的空口测量结果，确定所述各备选小区的切换接入优先级信息。
可选地，每个备选小区的第二切换条件包括用于表示该备选小区的资源预留时间的资源时效信息，还包括如下内容中的至少一项：
在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第十三门限，和/或，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第十三门限；
在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的第五预设数量的窄波束的信号能量或信号质量的加权平均值小于第十四门限，或/和，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的第六预设数量的窄波束的信号能量或信号质量的加权平均值大于第十五门限；
在服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第十六门限，和/或，所述用户终端测量到的该备选小区所有的窄波束的信号能量或信号质量的加权平均值大于第十七门限；
在服务小区中所述用户终端测量到的所有的宽波束的信号能量或信号质量的加权平均值小于第十八门限，和/或，所述用户终端测量到的该备选小区所有的宽波束的信号能量或信号质量的加权平均值大于第十九门限；
在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第二十门限，和/或，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第二十一门限；
在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的第七预设数量的宽波束的信号能量或信号质量的加权平均值小于第二十二门限，或/和，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的第八预设数量的宽波束的信号能量或信号质量的加权平均值大于第二十三门限；
其中，若所述预切换命令包括第一切换条件，且所述用户终端的空口测量结果满足一个或者多个备选小区的第二切换条件时，则所述用户终端按照所述一个或者多个备选小区的第二切换条件进行上报或者选择所述目标小区。
可选地，处理器2401执行的根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，包括：
若所述用户终端对空口测量的结果表示多个备选小区满足所述第二切换条件，且接收到所述多个备选小区对应的网络侧设备发送的预切换准备应答，则根据所述多个备选小区的切换接入优先级信息，选择目标小区，并控制所述用户终端切换至所述目标小区；或者
若所述用户终端对空口测量的结果表示一个备选小区满足所述第二切换条件，且未接收到该备选小区对应的网络侧设备返回的预切换准备应答，则将该备选小区作为目标小区，等接收到所述目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区。
可选地，所述预切换准备请求包括所述用户终端的上下文信息和/或资源预留时间。
可选地，处理器2401向所述备选小区对应的网络侧设备发送预切换准备请求，包括：
通过网络侧设备之间直接连接的接口向所述备选小区对应的网络侧设备发送预切换准备请求；或者
通过核心网设备向所述备选小区对应的网络侧设备发送预切换准备请求。
可选地，所述在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区，向所述备选小区对应的网络侧设备发送预切换准备请求，包括：
在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区，并向所述备选小区对应的网络侧设备发送预切换准备请求；
根据所述用户终端对空口测量的结果为所述用户终端选择另至少一个备选小区，并向该备选小区对应的网络侧设备发送预切换准备请求。
可选地，根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区之后，处理器2401还用于：
通过网络侧设备之间的接口，向所述备选小区中除所述目标小区之外的备选小区对应的网络侧设备发送释放资源请求；或者
通过核心网设备，向所述备选小区中除所述目标小区之外的备选小区对应的网络侧设备发送释放资源请求。
需要说明的是，本实施例中上述源网络侧设备2400可以是本公开文本实施例中方法实施例中任意实施方式的源网络侧设备，本公开文本实施例中方法实施例中源网络侧设备的任意实施方式都可以被本实施例中的上述源网络侧设备2400所实现，以及达到相同的有益效果，此处不再赘述。
参见图25，图25是本公开文本一些实施例提供的另一种用户终端的结构图，能够实现参照图8描述的实施例中的小区切换方法的细节，并达到相同的效果。如图25所示，用户终端2500包括：至少一个处理器2501、存储器2502、至少一个网络接口2504和用户接口2503。终端2500中的各个组件通过总线系统2505耦合在一起。可理解，总线系统2505用于实现这些组件之间的连接通信。总线系统2505除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图25中将各种总线都标为总线系统2505。
其中，用户接口2503可以包括显示器、键盘或者点击设备(例如，鼠标， 轨迹球(track ball)、触感板或者触摸屏等。
可以理解，本公开文本实施例中的存储器2502可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(RandomAccess Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本文描述的系统和方法的存储器2502旨在包括但不限于这些和任意其它适合类型的存储器。
在一些实施方式中，存储器2502存储了如下的元素，可执行模块或者数据结构，或者他们的子集，或者他们的扩展集：操作系统25021和应用程序25022。
其中，操作系统25021，包含各种系统程序，例如框架层、核心库层、驱动层等，用于实现各种基础业务以及处理基于硬件的任务。应用程序25022，包含各种应用程序，例如媒体播放器(Media Player)、浏览器(Browser)等，用于实现各种应用业务。实现本公开文本实施例方法的程序可以包含在应用程序25022中。
在本公开文本实施例中，通过调用存储器2502存储的程序或指令，具体的，可以是应用程序25022中存储的程序或指令，处理器2501用于：
在用户终端需要进行小区切换时，进行空口测量，获得空口测量结果；
基于所述空口测量结果，向目标小区发起接入；
其中，所述空口测量结果用于在至少一个备选小区中确定所述目标小区， 所述至少一个备选小区是源网络侧设备确定所述用户终端需要进行小区切换时，为所述用户终端选择的小区。
上述本公开文本实施例揭示的方法可以应用于处理器2501中，或者由处理器2501实现。处理器2501可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器2501中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器2501可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本公开文本实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本公开文本实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器2502，处理器2501读取存储器2502中的信息，结合其硬件完成上述方法的步骤。
可以理解的是，本文描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现，处理单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits，ASIC)、数字信号处理器(Digital Signal Processing，DSP)、数字信号处理设备(DSP Device，DSPD)、可编程逻辑设备(Programmable Logic Device，PLD)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本申请所述功能的其它电子单元或其组合中。
对于软件实现，可通过执行本文所述功能的模块(例如过程、函数等)来实现本文所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
可选地，在用户终端需要进行小区切换时，接收源网络侧设备发送的预切换命令之前，处理器2501还用于：
向所述源网络侧设备上报第一测量结果，供所述源网络侧设备确定所述用户终端是否需要进行小区切换，并在所述第一测量结果满足用于触发小区切换的预设条件时，确定所述用户终端是否需要进行小区切换；所述第一测量结果包括如下内容中的至少一项：
所述用户终端的服务小区的信号能量信息、所述服务小区的信号质量信息、所述服务小区的邻小区的信号能量信息和所述邻小区的信号质量信息。
可选地，所述用户终端的服务小区的信号能量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
所述服务小区的信号质量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息；
所述服务小区的邻小区的信号能量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
所述服务小区的邻小区的信号质量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息。
可选地，所述至少一个备选小区包括：
若所述第一测量结果包括所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，所述源网络侧设备基于所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，在所述服务小区的邻小区中选择的至少一个备选小区；
或者，
若所述第一测量结果未包括所述服务小区的信号能量信息和/或所述服务小区的信号质量信息，所述源网络侧设备预测所述用户终端的方向信息，基于所述方向信息在预先保存的邻区列表中选择的至少一个备选小区。
可选地，所述在用户终端需要进行小区切换时，进行空口测量，获得空口测量结果，包括：
在用户终端需要进行小区切换时，向所述用户终端发送预切换命令，基于所述预切换命令进行空口测量，获得空口测量结果；
所述预切换命令包括如下内容中的至少一项：
空口监控测量参数、第一切换条件和资源时效信息。
可选地，所述空口监控测量参数包括：空口监控测量小区和/或测量配置参数，所述空口监控测量小区包括所述服务小区和所述邻小区，所述邻小区包括所述至少一个备选小区，且所述测量配置参数包括测量频率、测量周期和测量上报条件中的至少一项。
可选地，所述第一切换条件包括如下内容中的至少一项：
在所述服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第一门限，和/或，所述用户终端测量到的所述邻小区信号中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第二门限；
在所述服务小区中所述用户终端测量到的窄波束中的信号能量或信号质量最好的第一预设数量的窄波束的信号能量或信号质量的加权平均值小于第三门限，或/和，所述用户终端测量到的所述邻小区中的窄波束中信号能量或信号质量最好的第二预设数量的窄波束的信号能量或信号质量的加权平均值大于第四门限；
在所述服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第五门限，和/或，所述用户终端测量到的所述邻小区所有的窄波束的信号能量或信号质量的加权平均值大于第六门限；
在所述服务小区中所述用户终端测量的所有的宽波束的信号能量或信号质量的加权平均值小于第七门限，和/或，所述用户终端测量到的所述邻小区所有的宽波束的信号能量或信号质量的加权平均值大于第八门限；
在所述服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第九门限，和/或，所述用户终端测量到的所述邻小区信号中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第十门限；
在所述服务小区中所述用户终端测量到的宽波束中的信号能量或信号质量最好的第三预设数量的宽波束的信号能量或信号质量的加权平均值小于第十一门限，或/和，所述用户终端测量到的所述邻小区中的宽波束中信号能量或信号质量最好的第四预设数量的宽波束的信号能量或信号质量的加权平均 值大于第十二门限。
可选地，所述资源时效信息表示所述至少一个备选小区为所述终端预留资源的有效时间。
可选地，所述进行空口测量，获得空口测量结果之后，在所述基于所述空口测量结果，向目标小区发起接入之前，处理器2501还用于：
基于所述空口测量结果从所述备选小区中选择所述目标小区，并向所述源网络侧设备上报从所述备选小区中选择所述目标小区的决策结果；或者
向所述源网络侧设备上报所述空口测量结果，接收所述源网络侧设备发送的从所述备选小区中选择所述目标小区的决策结果，所述空口测量结果用于所述源网络侧设备从所述备选小区中选择所述目标小区。
可选地，所述进行空口测量，获得空口测量结果之后，在所述基于所述空口测量结果，向目标小区发起接入之前，处理器2501还用于：
接收所述源网络侧设备发送的预切换准备应答消息；
其中，所述预切换准备应答消息表示对应的备选小区对应的网络侧设备已经完成切换准备。
可选地，所述预切换准备应答消息包括至少一个备选小区的应答信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数、切换接入优先级信息和第二切换条件中的至少一项；或者
所述预切换准备应答消息包括至少一个备选小区的应答信息和各备选小区的切换接入优先级信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数和第二切换条件中的至少一项。
可选地，所述备选小区的应答信息中的随机接入信息包括：该备选小区为所述用户终端分配的用户标识符。
可选地，所述备选小区的应答信息包括的配置参数包括：该备选小区为所述用户终端分配的用作所述用户终端进行协议层配置的参数。
可选地，所述各备选小区的切换接入优先级信息为源网络侧设备在接收到各备选小区对应的网络侧设备发送的预切换准备应答消息后，根据各备选小区的资源准备情况，以及所述用户终端的空口测量结果决定的。
可选地，每个备选小区的第二切换条件包括用于表示该备选小区的资源 预留时间的资源时效信息，还包括如下内容中的至少一项：
在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第十三门限，和/或，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第十三门限；
在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的第五预设数量的窄波束的信号能量或信号质量的加权平均值小于第十四门限，或/和，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的第六预设数量的窄波束的信号能量或信号质量的加权平均值大于第十五门限；
在服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第十六门限，和/或，所述用户终端测量到的该备选小区所有的窄波束的信号能量或信号质量的加权平均值大于第十七门限；
在服务小区中所述用户终端测量到的所有的宽波束的信号能量或信号质量的加权平均值小于第十八门限，和/或，所述用户终端测量到的该备选小区所有的宽波束的信号能量或信号质量的加权平均值大于第十九门限；
在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第二十门限，和/或，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第二十一门限；
在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的第七预设数量的宽波束的信号能量或信号质量的加权平均值小于第二十二门限，或/和，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的第八预设数量的宽波束的信号能量或信号质量的加权平均值大于第二十三门限；
其中，若所述预切换命令包括第一切换条件，且所述用户终端的空口测量结果满足一个或者多个备选小区的第二切换条件时，则所述用户终端按照所述一个或者多个备选小区的第二切换条件进行上报或者选择所述目标小区。
可选地，处理器2501执行的基于所述空口测量结果，向目标小区发起接 入，包括：
若所述至少一个备选小区中满足所述第二切换条件的小区已经完成切换准备，则根据所述各备选小区的切换接入优先级信息，选择目标小区，并向所述目标小区发起接入；或者
若所述至少一个备选小区中满足所述第二切换条件的小区未完成切换准备，则挂起切换流程，将所述至少一个备选小区中满足所述第二切换条件的小区作为目标小区，等所述目标小区完成切换准备后，向所述目标小区发起接入。
可选地，所述进行空口测量，获得空口测量结果之后，所述基于所述空口测量结果，向目标小区发起接入之前，处理器2501还用于：
向所述源网络侧设备发送所述空口测量结果；
其中，所述空口测量结果用于：所述源网络侧设备在所述至少一个备选小区添加新的备选小区，并向所述新的备选小区发送预切换准备请求；和/或
所述空口测量结果用于：所述源网络侧设备，删除所述至少一个备选小区中的一个或者多个小区，并向删除的一个或者多个小区对应的网络侧设备发送释放资源请求；
所述空口测量结果包括所述用户终端对所述服务小区和所述服务小区的邻小区进行空口测量的结果。
需要说明的是，本实施例中上述用户终端2500可以是本公开文本实施例中方法实施例中任意实施方式的用户终端，本公开文本实施例中方法实施例中用户终端的任意实施方式都可以被本实施例中的上述用户终端2500所实现，以及达到相同的有益效果，此处不再赘述。
参见图26，图26是本公开文本实施例提供的另一种目标网络侧设备的结构图，能够实现参照图9描述的实施例中的小区切换方法的细节，并达到相同的效果。如图26所示，该目标网络侧设备2600包括：处理器2601、收发机2602、存储器2603、用户接口2604和总线接口，其中：
处理器2601，用于读取存储器2603中的程序，执行下列过程：
在用户终端需要进行小区切换时，接收源网络侧设备发送的预切换准备请求；
基于所述预切换准备请求进行切换准备；
若所述目标网络侧设备的小区为目标小区，则执行所述用户终端的小区切换；
其中，所述目标网络侧设备的小区为所述源网络侧设备为所述用户终端选择的至少一个备选小区中的小区，所述目标小区是基于所述用户终端进行空口测量得到的空口测量结果确定的，且所述用户终端进行空口测量是基于所述源网络侧设备发送的预切换命令而进行的。
其中，收发机2602，用于在处理器2601的控制下接收和发送数据。
在图26中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器2601代表的一个或多个处理器和存储器2603代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起。总线接口提供接口。收发机2602可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口2604还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器2601负责管理总线架构和通常的处理，存储器2603可以存储处理器2601在执行操作时所使用的数据。
可选地，所述至少一个备选小区包括：
若所述用户终端上报的第一测量结果包括所述用户终端的服务小区的邻小区的信号能量信息和/或所述邻小区的信号质量信息，所述源网络侧设备基于所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，从所述服务小区的邻小区中选择的至少一个备选小区；
或者，
若所述用户终端上报的第一测量结果未包括所述服务小区的信号能量信息和/或所述服务小区的信号质量信息，所述源网络侧设备预测所述用户终端的方向信息，基于所述方向信息从预先保存的邻区列表中选择的至少一个备选小区。
可选地，所述目标小区是所述用户终端基于所述用户终端进行空口测量 得到的空口测量结果，从所述至少一个备选小区中选择的目标小区；或者
所述目标小区是所述源网络侧设备接收所述用户终端上报的所述用户终端进行空口测量得到的空口测量结果，基于所述空口测量结果从所述至少一个备选小区中选择的小区。
可选地，基于所述预切换准备请求进行切换准备之后，所述若所述目标网络侧设备的小区为目标小区，则执行所述用户终端的小区切换之前，处理器2601还用于：
若所述目标网络侧设备已经完成切换准备，则向所述源网络侧设备发送预切换准备应答消息。
可选地，所述预切换准备应答消息包括如下内容中的至少一项：
为所述用户终端分配的随机接入信息、配置参数和第二切换条件。
可选地，所述随机接入信息包括：目标网络侧设备为所述用户终端分配的用户标识符。
可选地，所述配置参数包括：所述目标网络侧设备为所述用户终端分配的用作所述用户终端进行协议层配置的参数。
可选地，所述第二切换条件包括所述目标网络侧设备的资源预留时间的资源时效信息，还包括如下内容中的至少一项：
在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第十三门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第十三门限；
在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的第五预设数量的窄波束的信号能量或信号质量的加权平均值小于第十四门限，或/和，所述用户终端测量到的所述目标网络侧设备对应的小区中的窄波束中信号能量或信号质量最好的第六预设数量的窄波束的信号能量或信号质量的加权平均值大于第十五门限；
在服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第十六门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区所有的窄波束的信号能量或信号质量的加权平均值大于 第十七门限；
在服务小区中所述用户终端测量到的所有的宽波束的信号能量或信号质量的加权平均值小于第十八门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区所有的宽波束的信号能量或信号质量的加权平均值大于第十九门限；
在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第二十门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第二十一门限；
在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的第七预设数量的宽波束的信号能量或信号质量的加权平均值小于第二十二门限，或/和，所述用户终端测量到的所述目标网络侧设备对应的小区中的宽波束中信号能量或信号质量最好的第八预设数量的宽波束的信号能量或信号质量的加权平均值大于第二十三门限。
可选地，所述预切换准备请求包括所述用户终端的上下文信息和/或资源预留时间。
可选地，处理器2601执行的基于所述预切换准备请求进行切换准备，包括：
基于所述预切换准备请求，为所述用户终端预留资源，并建立到所述源网络侧设备的数据通道，所述数据通道用于所述用户终端的数据传输。
可选地，处理器2601执行的接收源网络侧设备发送的预切换准备请求，包括：
通过网络侧设备之间直接连接的接口接收所述源网络侧设备发送的预切换准备请求；或者
通过核心网设备接收所述源网络侧设备发送的预切换准备请求。
可选地，所述若所述目标网络侧设备的小区为目标小区，则执行所述用户终端的小区切换之后，处理器2601还用于：
若所述目标网络侧设备的小区不为所述目标小区，则通过网络侧设备之间的接口，接收所述源网络侧设备发送的释放资源请求，并释放为所述用户 终端预留的资源；或者
若所述目标网络侧设备的小区不为所述目标小区，则通过核心网设备，接收所述源网络侧设备发送的释放资源请求，并释放为所述用户终端预留的资源。
需要说明的是，本实施例中上述目标网络侧设备2600可以是本公开文本实施例中方法实施例中任意实施方式的备选小区对应的网络侧设备，本公开文本实施例中方法实施例中备选小区对应的网络侧设备的任意实施方式都可以被本实施例中的上述目标网络侧设备2600所实现，以及达到相同的有益效果，此处不再赘述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本公开文本的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本公开文本实施例方案的目的。
另外，在本公开文本各个实施例中的各功能单元可以集成在一个处理单 元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本公开文本的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本公开文本各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本公开文本的具体实施方式，但本公开文本的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开文本揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开文本的保护范围之内。因此，本公开文本的保护范围应以权利要求的保护范围为准。

Claims (106)

  1. 一种小区切换方法，包括：
    在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区，向所述备选小区对应的网络侧设备发送预切换准备请求；
    根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，其中，所述目标小区是基于所述用户终端对空口测量的结果从所述备选小区中选择的小区。
  2. 根据权利要求1所述的方法，其中，所述为所述用户终端选择至少一个备选小区，向所述备选小区对应的网络侧设备发送预切换准备请求的步骤之前，所述方法还包括：
    接收所述用户终端上报的第一测量结果；
    当所述第一测量结果满足切换触发条件，则确定所述用户终端需要进行小区切换；
    其中，所述第一测量结果包括如下内容中的至少一项：
    所述用户终端的服务小区的信号能量信息、所述服务小区的信号质量信息、所述服务小区的邻小区的信号能量信息和所述邻小区的信号质量信息。
  3. 根据权利要求2所述的方法，其中，所述用户终端的服务小区的信号能量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
    所述服务小区的信号质量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息；
    所述服务小区的邻小区的信号能量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
    所述服务小区的邻小区的信号质量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息。
  4. 根据权利要求2所述的方法，其中，所述为所述用户终端选择至少一个备选小区的步骤，包括：
    若所述第一测量结果包括所述邻小区的信号能量信息和/或所述邻小区 的信号质量信息，则基于所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，在所述服务小区的邻小区中选择所述至少一个备选小区；或者
    若所述第一测量结果未包括所述服务小区的信号能量信息和/或所述服务小区的信号质量信息，则预测所述用户终端的方向信息，基于所述方向信息在预先保存的邻区列表中选择所述至少一个备选小区。
  5. 根据权利要求2所述的方法，其中，所述为所述用户终端选择至少一个备选小区的步骤之后，所述方法还包括：
    向所述用户终端发送预切换命令，其中，所述预切换命令包括如下内容中的至少一项：
    空口监控测量参数、第一切换条件和资源时效信息。
  6. 根据权利要求5所述的方法，其中，所述空口监控测量参数包括：空口监控测量小区和/或测量配置参数，所述空口监控测量小区包括所述服务小区和所述邻小区，所述邻小区包括所述至少一个备选小区，且所述测量配置参数包括测量频率、测量周期和测量上报条件中的至少一项。
  7. 根据权利要求5所述的方法，其中，所述第一切换条件包括如下内容中的至少一项：
    在所述服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第一门限，和/或，所述用户终端测量到的所述邻小区信号中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第二门限；
    在所述服务小区中所述用户终端测量到的窄波束中的信号能量或信号质量最好的第一预设数量的窄波束的信号能量或信号质量的加权平均值小于第三门限，或/和，所述用户终端测量到的所述邻小区中的窄波束中信号能量或信号质量最好的第二预设数量的窄波束的信号能量或信号质量的加权平均值大于第四门限；
    在所述服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第五门限，和/或，所述用户终端测量到的所述邻小区所有的窄波束的信号能量或信号质量的加权平均值大于第六门限；
    在所述服务小区中所述用户终端测量的所有的宽波束的信号能量或信号 质量的加权平均值小于第七门限，和/或，所述用户终端测量到的所述邻小区所有的宽波束的信号能量或信号质量的加权平均值大于第八门限；
    在所述服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第九门限，和/或，所述用户终端测量到的所述邻小区信号中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第十门限；
    在所述服务小区中所述用户终端测量到的宽波束中的信号能量或信号质量最好的第三预设数量的宽波束的信号能量或信号质量的加权平均值小于第十一门限，或/和，所述用户终端测量到的所述邻小区中的宽波束中信号能量或信号质量最好的第四预设数量的宽波束的信号能量或信号质量的加权平均值大于第十二门限。
  8. 根据权利要求5所述的方法，其中，所述资源时效信息表示所述至少一个备选小区为所述终端预留资源的有效时间。
  9. 根据权利要求1至8中任一项所述的方法，其中，所述根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区的步骤，包括：
    接收所述用户终端上报的从所述备选小区中选择目标小区的决策结果，并根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，所述目标小区是所述用户终端基于所述用户终端进行空口测量的空口测量结果确定的；
    或者，
    接收所述用户终端上报的所述用户终端进行空口测量的空口测量结果，基于所述空口测量结果从所述备选小区中选择目标小区，并根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，以及向所述用户终端发送从所述备选小区中选择所述目标小区的决策结果。
  10. 根据权利要求1至8中任一项所述的方法，其中，所述为所述用户终端选择至少一个备选小区，向所述备选小区对应的网络侧设备发送预切换准备请求的步骤之后，所根据目标小区对应的网络侧设备返回的预切换准备 应答，控制所述用户终端切换至所述目标小区的步骤之前，所述方法还包括：
    接收所述备选小区对应的网络侧设备发送的预切换准备应答消息；
    向所述用户终端发送预切换准备应答消息。
  11. 根据权利要求10所述的方法，其中
    向所述用户终端发送的预切换准备应答消息包括至少一个备选小区的应答信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数、切换接入优先级信息和第二切换条件中的至少一项；或者向所述用户终端发送的预切换准备应答消息包括至少一个备选小区的应答信息和各备选小区的切换接入优先级信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数和第二切换条件中的至少一项；
    所述备选小区对应的网络侧设备发送的预切换准备应答消息包括如下内容中的至少一项：
    为所述用户终端分配的随机接入信息、配置参数和第二切换条件。
  12. 根据权利要求11所述的方法，其中，所述备选小区的应答信息中的随机接入信息包括：该备选小区为所述用户终端分配的用户标识符；
    所述备选小区对应的网络侧设备发送的预切换准备应答消息包括的随机接入信息包括：该备选小区对应的网络侧设备对应的备选小区为所述用户终端分配的用户标识符。
  13. 根据权利要求11所述的方法，其中，所述备选小区的应答信息中的配置参数包括：该备选小区为所述用户终端分配的用作所述用户终端进行协议层配置的参数；
    所述备选小区对应的网络侧设备发送的预切换准备应答消息包括的配置参数包括：该备选小区对应的网络侧设备对应的备选小区为所述用户终端分配的用作所述用户终端进行协议层配置的参数。
  14. 根据权利要求11所述的方法，其中，所述接收所述备选小区对应的网络侧设备发送的预切换准备应答消息之后，所述方法还包括：
    根据各备选小区的资源准备情况，以及所述用户终端的空口测量结果，确定所述各备选小区的切换接入优先级信息。
  15. 根据权利要求11所述的方法，其中，每个备选小区的第二切换条件包括用于表示该备选小区的资源预留时间的资源时效信息，还包括如下内容中的至少一项：
    在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第十三门限，和/或，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第十三门限；
    在所述服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的第五预设数量的窄波束的信号能量或信号质量的加权平均值小于第十四门限，或/和，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的第六预设数量的窄波束的信号能量或信号质量的加权平均值大于第十五门限；
    在所述服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第十六门限，和/或，所述用户终端测量到的该备选小区所有的窄波束的信号能量或信号质量的加权平均值大于第十七门限；
    在所述服务小区中所述用户终端测量到的所有的宽波束的信号能量或信号质量的加权平均值小于第十八门限，和/或，所述用户终端测量到的该备选小区所有的宽波束的信号能量或信号质量的加权平均值大于第十九门限；
    在所述服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第二十门限，和/或，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第二十一门限；
    在所述服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的第七预设数量的宽波束的信号能量或信号质量的加权平均值小于第二十二门限，或/和，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的第八预设数量的宽波束的信号能量或信号质量的加权平均值大于第二十三门限；
    其中，若所述预切换命令包括第一切换条件，且所述用户终端的空口测量结果满足一个或者多个备选小区的第二切换条件时，则所述用户终端按照 所述一个或者多个备选小区的第二切换条件进行上报或者选择所述目标小区。
  16. 根据权利要求11所述的方法，其中，所述根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区的步骤，包括：
    若所述用户终端对空口测量的结果表示多个备选小区满足所述第二切换条件，且接收到所述多个备选小区对应的网络侧设备发送的预切换准备应答，则根据所述多个备选小区的切换接入优先级信息，选择目标小区，并控制所述用户终端切换至所述目标小区；或者
    若所述用户终端对空口测量的结果表示一个备选小区满足所述第二切换条件，且未接收到该备选小区对应的网络侧设备返回的预切换准备应答，则将该备选小区作为目标小区，等接收到所述目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区。
  17. 根据权利要求1至8中任一项所述的方法，其中，所述预切换准备请求包括所述用户终端的上下文信息和/或资源预留时间。
  18. 根据权利要求1至8中任一项所述的方法，其中，所述向所述备选小区对应的网络侧设备发送预切换准备请求，包括：
    通过网络侧设备之间直接连接的接口向所述备选小区对应的网络侧设备发送预切换准备请求；或者
    通过核心网设备向所述备选小区对应的网络侧设备发送预切换准备请求。
  19. 根据权利要求2所述的方法，其中，所述在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区，向所述备选小区对应的网络侧设备发送预切换准备请求的步骤，包括：
    在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区，并向所述备选小区对应的网络侧设备发送预切换准备请求；
    根据所述用户终端对空口测量的结果为所述用户终端选择另至少一个备选小区，并向该备选小区对应的网络侧设备发送预切换准备请求。
  20. 根据权利要求1至8中任一项所述的方法，其中，所述根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区的步骤之后，所述方法还包括：
    通过网络侧设备之间的接口，向所述备选小区中除所述目标小区之外的备选小区对应的网络侧设备发送释放资源请求；或者
    通过核心网设备，向所述备选小区中除所述目标小区之外的备选小区对应的网络侧设备发送释放资源请求。
  21. 一种小区切换方法，应用于用户终端，其中所述小区切换方法包括：
    在用户终端需要进行小区切换时，进行空口测量，获得空口测量结果；
    基于所述空口测量结果，向目标小区发起接入；
    其中，所述空口测量结果用于在至少一个备选小区中确定所述目标小区，所述至少一个备选小区是源网络侧设备确定所述用户终端需要进行小区切换时，为所述用户终端选择的小区。
  22. 根据权利要求21所述的方法，其中，所述在用户终端需要进行小区切换时，接收源网络侧设备发送的预切换命令的步骤之前，所述方法还包括：
    向所述源网络侧设备上报第一测量结果，供所述源网络侧设备确定所述用户终端是否需要进行小区切换，并在所述第一测量结果满足用于触发小区切换的预设条件时，确定所述用户终端是否需要进行小区切换；所述第一测量结果包括如下内容中的至少一项：
    所述用户终端的服务小区的信号能量信息、所述服务小区的信号质量信息、所述服务小区的邻小区的信号能量信息和所述邻小区的信号质量信息。
  23. 根据权利要求22所述的方法，其中，所述用户终端的服务小区的信号能量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
    所述服务小区的信号质量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息；
    所述服务小区的邻小区的信号能量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
    所述服务小区的邻小区的信号质量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息。
  24. 根据权利要求22所述的方法，其中，所述至少一个备选小区包括：
    若所述第一测量结果包括所述邻小区的信号能量信息和/或所述邻小区 的信号质量信息，所述源网络侧设备基于所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，在所述服务小区的邻小区中选择的至少一个备选小区；
    或者，
    若所述第一测量结果未包括所述服务小区的信号能量信息和/或所述服务小区的信号质量信息，所述源网络侧设备预测所述用户终端的方向信息，基于所述方向信息在预先保存的邻区列表中选择的至少一个备选小区。
  25. 根据权利要求22所述的方法，其中，所述在用户终端需要进行小区切换时，进行空口测量，获得空口测量结果的步骤，包括：
    在用户终端需要进行小区切换时，向所述用户终端发送预切换命令，基于所述预切换命令进行空口测量，获得空口测量结果；
    所述预切换命令包括如下内容中的至少一项：
    空口监控测量参数、第一切换条件和资源时效信息。
  26. 根据权利要求25所述的方法，其中，所述空口监控测量参数包括：空口监控测量小区和/或测量配置参数，所述空口监控测量小区包括所述服务小区和所述邻小区，所述邻小区包括所述至少一个备选小区，且所述测量配置参数包括测量频率、测量周期和测量上报条件中的至少一项。
  27. 根据权利要求25所述的方法，其中，所述第一切换条件包括如下内容中的至少一项：
    在所述服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第一门限，和/或，所述用户终端测量到的所述邻小区信号中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第二门限；
    在所述服务小区中所述用户终端测量到的窄波束中的信号能量或信号质量最好的第一预设数量的窄波束的信号能量或信号质量的加权平均值小于第三门限，或/和，所述用户终端测量到的所述邻小区中的窄波束中信号能量或信号质量最好的第二预设数量的窄波束的信号能量或信号质量的加权平均值大于第四门限；
    在所述服务小区中所述用户终端测量到的所有的窄波束的信号能量或信 号质量的加权平均值小于第五门限，和/或，所述用户终端测量到的所述邻小区所有的窄波束的信号能量或信号质量的加权平均值大于第六门限；
    在所述服务小区中所述用户终端测量的所有的宽波束的信号能量或信号质量的加权平均值小于第七门限，和/或，所述用户终端测量到的所述邻小区所有的宽波束的信号能量或信号质量的加权平均值大于第八门限；
    在所述服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第九门限，和/或，所述用户终端测量到的所述邻小区信号中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第十门限；
    在所述服务小区中所述用户终端测量到的宽波束中的信号能量或信号质量最好的第三预设数量的宽波束的信号能量或信号质量的加权平均值小于第十一门限，或/和，所述用户终端测量到的所述邻小区中的宽波束中信号能量或信号质量最好的第四预设数量的宽波束的信号能量或信号质量的加权平均值大于第十二门限。
  28. 根据权利要求25所述的方法，其中，所述资源时效信息表示所述至少一个备选小区为所述终端预留资源的有效时间。
  29. 根据权利要求21至28中任一项所述的方法，其中，所述进行空口测量，获得空口测量结果的步骤之后，所述基于所述空口测量结果，向目标小区发起接入的步骤之前，所述方法还包括：
    基于所述空口测量结果从所述备选小区中选择所述目标小区，并向所述源网络侧设备上报从所述备选小区中选择所述目标小区的决策结果；或者
    向所述源网络侧设备上报所述空口测量结果，接收所述源网络侧设备发送的从所述备选小区中选择所述目标小区的决策结果，所述空口测量结果用于所述源网络侧设备从所述备选小区中选择所述目标小区。
  30. 根据权利要求21至28中任一项所述的方法，其中，所述进行空口测量，获得空口测量结果的步骤之后，在所述基于所述空口测量结果，向目标小区发起接入步骤之前，所述方法还包括：
    接收所述源网络侧设备发送的预切换准备应答消息；
    其中，所述预切换准备应答消息表示对应的备选小区对应的网络侧设备 已经完成切换准备。
  31. 根据权利要求30所述的方法，其中
    所述预切换准备应答消息包括至少一个备选小区的应答信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数、切换接入优先级信息和第二切换条件中的至少一项；或者
    所述预切换准备应答消息包括至少一个备选小区的应答信息和各备选小区的切换接入优先级信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数和第二切换条件中的至少一项。
  32. 根据权利要求31所述的方法，其中，所述备选小区的应答信息中的随机接入信息包括：该备选小区为所述用户终端分配的用户标识符。
  33. 根据权利要求31所述的方法，其中，所述备选小区的应答信息包括的配置参数包括：该备选小区为所述用户终端分配的用作所述用户终端进行协议层配置的参数。
  34. 根据权利要求31所述的方法，其中，所述各备选小区的切换接入优先级信息为源网络侧设备在接收到各备选小区对应的网络侧设备发送的预切换准备应答消息后，根据各备选小区的资源准备情况，以及所述用户终端的空口测量结果决定的。
  35. 根据权利要求31所述的方法，其中，每个备选小区的第二切换条件包括用于表示该备选小区的资源预留时间的资源时效信息，还包括如下内容中的至少一项：
    在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第十三门限，和/或，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第十三门限；
    在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的第五预设数量的窄波束的信号能量或信号质量的加权平均值小于第十四门限，或/和，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的第六预设数量的窄波束的信号能量或信号质量的加权平均值大于第十五门限；
    在服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第十六门限，和/或，所述用户终端测量到的该备选小区所有的窄波束的信号能量或信号质量的加权平均值大于第十七门限；
    在服务小区中所述用户终端测量到的所有的宽波束的信号能量或信号质量的加权平均值小于第十八门限，和/或，所述用户终端测量到的该备选小区所有的宽波束的信号能量或信号质量的加权平均值大于第十九门限；
    在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第二十门限，和/或，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第二十一门限；
    在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的第七预设数量的宽波束的信号能量或信号质量的加权平均值小于第二十二门限，或/和，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的第八预设数量的宽波束的信号能量或信号质量的加权平均值大于第二十三门限；
    其中，若所述预切换命令包括第一切换条件，且所述用户终端的空口测量结果满足一个或者多个备选小区的第二切换条件时，则所述用户终端按照所述一个或者多个备选小区的第二切换条件进行上报或者选择所述目标小区。
  36. 根据权利要求31所述的方法，其中，所述基于所述空口测量结果，向目标小区发起接入的步骤，包括：
    若所述至少一个备选小区中满足所述第二切换条件的小区已经完成切换准备，则根据所述各备选小区的切换接入优先级信息，选择目标小区，并向所述目标小区发起接入；或者
    若所述至少一个备选小区中满足所述第二切换条件的小区未完成切换准备，则挂起切换流程，将所述至少一个备选小区中满足所述第二切换条件的小区作为目标小区，等所述目标小区完成切换准备后，向所述目标小区发起接入。
  37. 根据权利要求21至28中任一项所述的方法，其中，所述进行空口测量，获得空口测量结果的步骤之后，所述基于所述空口测量结果，向目标 小区发起接入的步骤之前，所述方法还包括：
    向所述源网络侧设备发送所述空口测量结果；
    其中，所述空口测量结果用于：所述源网络侧设备在所述至少一个备选小区添加新的备选小区，并向所述新的备选小区发送预切换准备请求；和/或
    所述空口测量结果用于：所述源网络侧设备，删除所述至少一个备选小区中的一个或者多个小区，并向删除的一个或者多个小区对应的网络侧设备发送释放资源请求；
    所述空口测量结果包括所述用户终端对服务小区和所述服务小区的邻小区进行空口测量的结果。
  38. 一种小区切换方法，应用于目标网络侧设备，其中，包括：
    在用户终端需要进行小区切换时，接收源网络侧设备发送的预切换准备请求；
    基于所述预切换准备请求进行切换准备；
    若所述目标网络侧设备的小区为目标小区，则执行所述用户终端的小区切换；
    其中，所述目标网络侧设备的小区为所述源网络侧设备为所述用户终端选择的至少一个备选小区中的小区，所述目标小区是基于所述用户终端进行空口测量得到的空口测量结果确定的，且所述用户终端进行空口测量是基于所述源网络侧设备发送的预切换命令而进行的。
  39. 根据权利要求38所述的方法，其中，所述至少一个备选小区包括：
    若所述用户终端上报的第一测量结果包括所述用户终端的服务小区的邻小区的信号能量信息和/或所述邻小区的信号质量信息，所述源网络侧设备基于所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，从所述服务小区的邻小区中选择的至少一个备选小区；
    或者，
    若所述用户终端上报的第一测量结果未包括所述服务小区的信号能量信息和/或所述服务小区的信号质量信息，所述源网络侧设备预测所述用户终端的方向信息，基于所述方向信息从预先保存的邻区列表中选择的至少一个备选小区。
  40. 根据权利要求38所述的方法，其中
    所述目标小区是所述用户终端基于所述用户终端进行空口测量得到的空口测量结果，从所述至少一个备选小区中选择的目标小区；或者
    所述目标小区是所述源网络侧设备接收所述用户终端上报的所述用户终端进行空口测量得到的空口测量结果，基于所述空口测量结果从所述至少一个备选小区中选择的小区。
  41. 根据权利要求38至40中任一项所述的方法，其中，所述基于所述预切换准备请求进行切换准备的步骤之后，所述若所述目标网络侧设备的小区为目标小区，则执行所述用户终端的小区切换的步骤之前，所述方法还包括：
    若所述目标网络侧设备已经完成切换准备，则向所述源网络侧设备发送预切换准备应答消息。
  42. 根据权利要求41所述的方法，其中，所述预切换准备应答消息包括如下内容中的至少一项：
    为所述用户终端分配的随机接入信息、配置参数和第二切换条件。
  43. 根据权利要求42所述的方法，其中，所述随机接入信息包括：目标网络侧设备为所述用户终端分配的用户标识符。
  44. 根据权利要求42所述的方法，其中，所述配置参数包括：所述目标网络侧设备为所述用户终端分配的用作所述用户终端进行协议层配置的参数。
  45. 根据权利要求42所述的方法，其中，所述第二切换条件包括所述目标网络侧设备的资源预留时间的资源时效信息，还包括如下内容中的至少一项：
    在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第十三门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第十三门限；
    在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的第五预设数量的窄波束的信号能量或信号质量的加权平均值小于第十四门限，或/和，所述用户终端测量到的所述目标网络侧设备对应的小区中的窄波 束中信号能量或信号质量最好的第六预设数量的窄波束的信号能量或信号质量的加权平均值大于第十五门限；
    在服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第十六门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区所有的窄波束的信号能量或信号质量的加权平均值大于第十七门限；
    在服务小区中所述用户终端测量到的所有的宽波束的信号能量或信号质量的加权平均值小于第十八门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区所有的宽波束的信号能量或信号质量的加权平均值大于第十九门限；
    在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第二十门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第二十一门限；
    在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的第七预设数量的宽波束的信号能量或信号质量的加权平均值小于第二十二门限，或/和，所述用户终端测量到的所述目标网络侧设备对应的小区中的宽波束中信号能量或信号质量最好的第八预设数量的宽波束的信号能量或信号质量的加权平均值大于第二十三门限。
  46. 根据权利要求38至40中任一项所述的方法，其中，所述预切换准备请求包括所述用户终端的上下文信息和/或资源预留时间。
  47. 根据权利要求38至40中任一项所述的方法，其中，所述基于所述预切换准备请求进行切换准备的步骤，包括：
    基于所述预切换准备请求，为所述用户终端预留资源，并建立到所述源网络侧设备的数据通道，所述数据通道用于所述用户终端的数据传输。
  48. 根据权利要求38至40中任一项所述的方法，其中，所述接收源网络侧设备发送的预切换准备请求的步骤，包括：
    通过网络侧设备之间直接连接的接口接收所述源网络侧设备发送的预切换准备请求；或者
    通过核心网设备接收所述源网络侧设备发送的预切换准备请求。
  49. 根据权利要求47所述的方法，其中，所述若所述目标网络侧设备的小区为目标小区，则执行所述用户终端的小区切换的步骤之后，所述方法还包括：
    若所述目标网络侧设备的小区不为所述目标小区，则通过网络侧设备之间的接口，接收所述源网络侧设备发送的释放资源请求，并释放为所述用户终端预留的资源；或者
    若所述目标网络侧设备的小区不为所述目标小区，则通过核心网设备，接收所述源网络侧设备发送的释放资源请求，并释放为所述用户终端预留的资源。
  50. 一种源网络侧设备，包括：
    备选小区选择模块，用于在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区；
    第一发送模块，用于向所述备选小区对应的网络侧设备发送预切换准备请求；
    控制模块，用于根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，其中，所述目标小区是基于所述用户终端对空口测量的结果从所述备选小区中选择的小区。
  51. 根据权利要求50所述的源网络侧设备，还包括：
    第一接收模块，用于接收所述用户终端上报的第一测量结果；
    切换确定模块，用于当所述第一测量结果满足切换触发条件，则确定所述用户终端需要进行小区切换；
    其中，所述第一测量结果满足用于触发小区切换的预设条件，且所述第一测量结果包括如下内容中的至少一项：
    所述用户终端的服务小区的信号能量信息、所述服务小区的信号质量信息、所述服务小区的邻小区的信号能量信息和所述邻小区的信号质量信息。
  52. 根据权利要求51所述的源网络侧设备，其中，所述用户终端的服务小区的信号能量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
    所述服务小区的信号质量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息；
    所述服务小区的邻小区的信号能量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
    所述服务小区的邻小区的信号质量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息。
  53. 根据权利要求51所述的源网络侧设备，其中
    所述备选小区选择模块，具体用于若所述第一测量结果包括所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，则基于所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，在所述服务小区的邻小区中选择所述至少一个备选小区；
    或者，
    若所述第一测量结果未包括所述服务小区的信号能量信息和/或所述服务小区的信号质量信息，则预测所述用户终端的方向信息，基于所述方向信息在预先保存的邻区列表中选择所述至少一个备选小区。
  54. 根据权利要求51所述的源网络侧设备，还包括：
    第二发送模块，用于向所述用户终端发送预切换命令，其中，所述预切换命令包括如下内容中的至少一项：
    空口监控测量参数、第一切换条件和资源时效信息。
  55. 根据权利要求54所述的源网络侧设备，其中，所述空口监控测量参数包括：空口监控测量小区和/或测量配置参数，所述空口监控测量小区包括所述服务小区和所述邻小区，所述邻小区包括所述至少一个备选小区，且所述测量配置参数包括测量频率、测量周期和测量上报条件中的至少一项。
  56. 根据权利要求54所述的源网络侧设备，其中，所述第一切换条件包括如下内容中的至少一项：
    在所述服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第一门限，和/或，所述用户终端测量到的所述邻小区信号中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第二门限；
    在所述服务小区中所述用户终端测量到的窄波束中的信号能量或信号质量最好的第一预设数量的窄波束的信号能量或信号质量的加权平均值小于第三门限，或/和，所述用户终端测量到的所述邻小区中的窄波束中信号能量或信号质量最好的第二预设数量的窄波束的信号能量或信号质量的加权平均值大于第四门限；
    在所述服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第五门限，和/或，所述用户终端测量到的所述邻小区所有的窄波束的信号能量或信号质量的加权平均值大于第六门限；
    在所述服务小区中所述用户终端测量的所有的宽波束的信号能量或信号质量的加权平均值小于第七门限，和/或，所述用户终端测量到的所述邻小区所有的宽波束的信号能量或信号质量的加权平均值大于第八门限；
    在所述服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第九门限，和/或，所述用户终端测量到的所述邻小区信号中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第十门限；
    在所述服务小区中所述用户终端测量到的宽波束中的信号能量或信号质量最好的第三预设数量的宽波束的信号能量或信号质量的加权平均值小于第十一门限，或/和，所述用户终端测量到的所述邻小区中的宽波束中信号能量或信号质量最好的第四预设数量的宽波束的信号能量或信号质量的加权平均值大于第十二门限。
  57. 根据权利要求54所述的源网络侧设备，其中，所述资源时效信息表示所述至少一个备选小区为所述终端预留资源的有效时间。
  58. 根据权利要求50至57中任一项所述的源网络侧设备，其中，所述控制模块，具体用于接收所述用户终端上报的从所述备选小区中选择目标小区的决策结果，并根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，所述目标小区是所述用户终端基于所述用户终端进行空口测量的空口测量结果确定的；
    或者，
    接收所述用户终端上报的所述用户终端进行空口测量的空口测量结果， 基于所述空口测量结果从所述备选小区中选择目标小区，并根据目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区，以及向所述用户终端发送从所述备选小区中选择所述目标小区的决策结果。
  59. 根据权利要求50至57中任一项所述的源网络侧设备，还包括：
    应答消息接收模块，用于接收所述备选小区对应的网络侧设备发送的预切换准备应答消息；
    应答消息发送模块，用于向所述用户终端发送预切换准备应答消息。
  60. 根据权利要求59所述的源网络侧设备，其中，向所述用户终端发送的预切换准备应答消息包括至少一个备选小区的应答信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数、切换接入优先级信息和第二切换条件中的至少一项；或者向所述用户终端发送的预切换准备应答消息包括至少一个备选小区的应答信息和各备选小区的切换接入优先级信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数和第二切换条件中的至少一项；
    所述备选小区对应的网络侧设备发送的预切换准备应答消息包括如下内容中的至少一项：
    为所述用户终端分配的随机接入信息、配置参数和第二切换条件。
  61. 根据权利要求60所述的源网络侧设备，其中，所述备选小区的应答信息中的随机接入信息包括：该备选小区为所述用户终端分配的用户标识符；
    所述备选小区对应的网络侧设备发送的预切换准备应答消息包括的随机接入信息包括：该备选小区对应的网络侧设备对应的备选小区为所述用户终端分配的用户标识符。
  62. 根据权利要求60所述的源网络侧设备，其中，所述备选小区的应答信息中的配置参数包括：该备选小区为所述用户终端分配的用作所述用户终端进行协议层配置的参数；
    所述备选小区对应的网络侧设备发送的预切换准备应答消息包括的配置参数包括：该备选小区对应的网络侧设备对应的备选小区为所述用户终端分配的用作所述用户终端进行协议层配置的参数。
  63. 根据权利要求60所述的源网络侧设备，其中，所述源网络侧设备还包括：
    优先级确定模块，用于根据各备选小区的资源准备情况，以及所述用户终端的空口测量结果，确定所述各备选小区的切换接入优先级信息。
  64. 根据权利要求60所述的源网络侧设备，其中，每个备选小区的第二切换条件包括用于表示该备选小区的资源预留时间的资源时效信息，还包括如下内容中的至少一项：
    在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第十三门限，和/或，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第十三门限；
    在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的第五预设数量的窄波束的信号能量或信号质量的加权平均值小于第十四门限，或/和，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的第六预设数量的窄波束的信号能量或信号质量的加权平均值大于第十五门限；
    在服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第十六门限，和/或，所述用户终端测量到的该备选小区所有的窄波束的信号能量或信号质量的加权平均值大于第十七门限；
    在服务小区中所述用户终端测量到的所有的宽波束的信号能量或信号质量的加权平均值小于第十八门限，和/或，所述用户终端测量到的该备选小区所有的宽波束的信号能量或信号质量的加权平均值大于第十九门限；
    在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第二十门限，和/或，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第二十一门限；
    在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的第七预设数量的宽波束的信号能量或信号质量的加权平均值小于第二十二门限，或/和，所述用户终端测量到的该备选小区中的宽波束中信号能量或信 号质量最好的第八预设数量的宽波束的信号能量或信号质量的加权平均值大于第二十三门限；
    其中，若所述预切换命令包括第一切换条件，且所述用户终端的空口测量结果满足一个或者多个备选小区的第二切换条件时，则所述用户终端按照所述一个或者多个备选小区的第二切换条件进行上报或者选择所述目标小区。
  65. 根据权利要求60所述的源网络侧设备，其中
    所述控制模块，具体用于若所述用户终端对空口测量的结果表示多个备选小区满足所述第二切换条件，且接收到所述多个备选小区对应的网络侧设备发送的预切换准备应答，则根据所述多个备选小区的切换接入优先级信息，选择目标小区，并控制所述用户终端切换至所述目标小区；或者
    若所述用户终端对空口测量的结果表示一个备选小区满足所述第二切换条件，且未接收到该备选小区对应的网络侧设备返回的预切换准备应答，则将该备选小区作为目标小区，等接收到所述目标小区对应的网络侧设备返回的预切换准备应答，控制所述用户终端切换至所述目标小区。
  66. 根据权利要求50至57中任一项所述的源网络侧设备，其中，所述预切换准备请求包括所述用户终端的上下文信息和/或资源预留时间。
  67. 根据权利要求55至57中任一项所述的源网络侧设备，其中，所述第一发送模块，具体用于通过网络侧设备之间直接连接的接口向所述备选小区对应的网络侧设备发送预切换准备请求；或者
    通过核心网设备向所述备选小区对应的网络侧设备发送预切换准备请求。
  68. 根据权利要求51所述的源网络侧设备，其中，所述备选小区选择模块，具体用于在确定用户终端需要进行小区切换时，为所述用户终端选择至少一个备选小区，并向所述备选小区对应的网络侧设备发送预切换准备请求；
    根据所述用户终端对空口测量的结果为所述用户终端选择另至少一个备选小区，并向该备选小区对应的网络侧设备发送预切换准备请求。
  69. 根据权利要求50至57中任一项所述的源网络侧设备，还包括：
    第五发送模块，用于通过网络侧设备之间的接口，向所述备选小区中除所述目标小区之外的备选小区对应的网络侧设备发送释放资源请求；或者
    第六发送模块，用于通过核心网设备，向所述备选小区中除所述目标小 区之外的备选小区对应的网络侧设备发送释放资源请求。
  70. 一种用户终端，包括：
    空口测量模块，用于在用户终端需要进行小区切换时，进行空口测量，获得空口测量结果；
    接入模块，用于基于所述空口测量结果，向目标小区发起接入；
    其中，所述空口测量结果用于在至少一个备选小区中确定所述目标小区，所述至少一个备选小区是源网络侧设备确定所述用户终端需要进行小区切换时，为所述用户终端选择的小区。
  71. 根据权利要求70所述的用户终端，还包括：
    第一测量上报模块，用于向所述源网络侧设备上报第一测量结果，供所述源网络侧设备确定所述用户终端是否需要进行小区切换，并在所述第一测量结果满足用于触发小区切换的预设条件时，确定所述用户终端是否需要进行小区切换；所述第一测量结果包括如下内容中的至少一项：
    所述用户终端的服务小区的信号能量信息、所述服务小区的信号质量信息、所述服务小区的邻小区的信号能量信息和所述邻小区的信号质量信息。
  72. 根据权利要求71所述的用户终端，其中，所述用户终端的服务小区的信号能量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
    所述服务小区的信号质量信息包括所述用户终端对所述服务小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息；
    所述服务小区的邻小区的信号能量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号能量信息；
    所述服务小区的邻小区的信号质量信息包括所述用户终端对所述邻小区的至少一个宽波束和/或至少一个窄波束进行测量得到的信号质量信息。
  73. 根据权利要求71所述的用户终端，其中，所述至少一个备选小区包括：
    若所述第一测量结果包括所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，所述源网络侧设备基于所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，在所述服务小区的邻小区中选择的至少一个备选 小区；
    或者，
    若所述第一测量结果未包括所述服务小区的信号能量信息和/或所述服务小区的信号质量信息，所述源网络侧设备预测所述用户终端的方向信息，基于所述方向信息在预先保存的邻区列表中选择的至少一个备选小区。
  74. 根据权利要求71所述的用户终端，其中，所述空口测量模块，具体用于在用户终端需要进行小区切换时，向所述用户终端发送预切换命令，基于所述预切换命令进行空口测量，获得空口测量结果；
    所述预切换命令包括如下内容中的至少一项：
    空口监控测量参数、第一切换条件和资源时效信息。
  75. 根据权利要求74所述的用户终端，其中，所述空口监控测量参数包括：空口监控测量小区和/或测量配置参数，所述空口监控测量小区包括所述服务小区和所述邻小区，所述邻小区包括所述至少一个备选小区，且所述测量配置参数包括测量频率、测量周期和测量上报条件中的至少一项。
  76. 根据权利要求74所述的用户终端，其中，所述第一切换条件包括如下内容中的至少一项：
    在所述服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第一门限，和/或，所述用户终端测量到的所述邻小区信号中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第二门限；
    在所述服务小区中所述用户终端测量到的窄波束中的信号能量或信号质量最好的第一预设数量的窄波束的信号能量或信号质量的加权平均值小于第三门限，或/和，所述用户终端测量到的所述邻小区中的窄波束中信号能量或信号质量最好的第二预设数量的窄波束的信号能量或信号质量的加权平均值大于第四门限；
    在所述服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第五门限，和/或，所述用户终端测量到的所述邻小区所有的窄波束的信号能量或信号质量的加权平均值大于第六门限；
    在所述服务小区中所述用户终端测量的所有的宽波束的信号能量或信号 质量的加权平均值小于第七门限，和/或，所述用户终端测量到的所述邻小区所有的宽波束的信号能量或信号质量的加权平均值大于第八门限；
    在所述服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第九门限，和/或，所述用户终端测量到的所述邻小区信号中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第十门限；
    在所述服务小区中所述用户终端测量到的宽波束中的信号能量或信号质量最好的第三预设数量的宽波束的信号能量或信号质量的加权平均值小于第十一门限，或/和，所述用户终端测量到的所述邻小区中的宽波束中信号能量或信号质量最好的第四预设数量的宽波束的信号能量或信号质量的加权平均值大于第十二门限。
  77. 根据权利要求74所述的用户终端，其中，所述资源时效信息表示所述至少一个备选小区为所述终端预留资源的有效时间。
  78. 根据权利要求70至77中任一项所述的用户终端，还包括：
    决策结果上报模块，用于基于所述空口测量结果从所述备选小区中选择所述目标小区，并向所述源网络侧设备上报从所述备选小区中选择所述目标小区的决策结果；或者
    第二测量上报模块，用于向所述源网络侧设备上报所述空口测量结果，接收所述源网络侧设备发送的从所述备选小区中选择所述目标小区的决策结果，所述空口测量结果用于所述源网络侧设备从所述备选小区中选择所述目标小区。
  79. 根据权利要求70至77中任一项所述的用户终端，还包括：
    应答消息接收模块，用于接收所述源网络侧设备发送的预切换准备应答消息；
    其中，所述预切换准备应答消息表示对应的备选小区对应的网络侧设备已经完成切换准备。
  80. 根据权利要求79所述的用户终端，其中
    所述预切换准备应答消息包括至少一个备选小区的应答信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数、 切换接入优先级信息和第二切换条件中的至少一项；或者
    所述预切换准备应答消息包括至少一个备选小区的应答信息和各备选小区的切换接入优先级信息，其中，每个备选小区的应答信息包括为所述用户终端分配的随机接入信息、配置参数和第二切换条件中的至少一项。
  81. 根据权利要求80所述的用户终端，其中，所述备选小区的应答信息中的随机接入信息包括：该备选小区为所述用户终端分配的用户标识符。
  82. 根据权利要求80所述的用户终端，其中，所述备选小区的应答信息包括的配置参数包括：该备选小区为所述用户终端分配的用作所述用户终端进行协议层配置的参数。
  83. 根据权利要求80所述的用户终端，其中，所述各备选小区的切换接入优先级信息为源网络侧设备在接收到各备选小区对应的网络侧设备发送的预切换准备应答消息后，根据各备选小区的资源准备情况，以及所述用户终端的空口测量结果决定的。
  84. 根据权利要求80所述的用户终端，其中，每个备选小区的第二切换条件包括用于表示该备选小区的资源预留时间的资源时效信息，还包括如下内容中的至少一项：
    在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第十三门限，和/或，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第十三门限；
    在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的第五预设数量的窄波束的信号能量或信号质量的加权平均值小于第十四门限，或/和，所述用户终端测量到的该备选小区中的窄波束中信号能量或信号质量最好的第六预设数量的窄波束的信号能量或信号质量的加权平均值大于第十五门限；
    在服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第十六门限，和/或，所述用户终端测量到的该备选小区所有的窄波束的信号能量或信号质量的加权平均值大于第十七门限；
    在服务小区中所述用户终端测量到的所有的宽波束的信号能量或信号质 量的加权平均值小于第十八门限，和/或，所述用户终端测量到的该备选小区所有的宽波束的信号能量或信号质量的加权平均值大于第十九门限；
    在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第二十门限，和/或，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第二十一门限；
    在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的第七预设数量的宽波束的信号能量或信号质量的加权平均值小于第二十二门限，或/和，所述用户终端测量到的该备选小区中的宽波束中信号能量或信号质量最好的第八预设数量的宽波束的信号能量或信号质量的加权平均值大于第二十三门限；
    其中，若所述预切换命令包括第一切换条件，且所述用户终端的空口测量结果满足一个或者多个备选小区的第二切换条件时，则所述用户终端按照所述一个或者多个备选小区的第二切换条件进行上报或者选择所述目标小区。
  85. 根据权利要求80所述的用户终端，其中，所述接入模块，具体用于若所述至少一个备选小区中满足所述第二切换条件的小区已经完成切换准备，则根据所述各备选小区的切换接入优先级信息，选择目标小区，并向所述目标小区发起接入；或者
    若所述至少一个备选小区中满足所述第二切换条件的小区未完成切换准备，则挂起切换流程，将所述至少一个备选小区中满足所述第二切换条件的小区作为目标小区，等所述目标小区完成切换准备后，向所述目标小区发起接入。
  86. 根据权利要求70至77中任一项所述的用户终端，还包括：
    第三测量上报模块，用于向所述源网络侧设备发送所述空口测量结果；
    其中，所述空口测量结果用于：所述源网络侧设备在所述至少一个备选小区添加新的备选小区，并向所述新的备选小区发送预切换准备请求；和/或
    所述空口测量结果用于：所述源网络侧设备，删除所述至少一个备选小区中的一个或者多个小区，并向删除的一个或者多个小区对应的网络侧设备发送释放资源请求；
    所述空口测量结果包括所述用户终端对服务小区和所述服务小区的邻小区进行空口测量的结果。
  87. 一种目标网络侧设备，包括：
    准备请求接收模块，用于在用户终端需要进行小区切换时，接收源网络侧设备发送的预切换准备请求；
    切换准备模块，用于基于所述预切换准备请求进行切换准备；
    执行模块，用于若所述目标网络侧设备的小区为目标小区，则执行所述用户终端的小区切换；
    其中，所述目标网络侧设备的小区为所述源网络侧设备为所述用户终端选择的至少一个备选小区中的小区，所述目标小区是基于所述用户终端进行空口测量得到的空口测量结果确定的，且所述用户终端进行空口测量是基于所述源网络侧设备发送的预切换命令而进行的。
  88. 根据权利要求87所述的目标网络侧设备，其中，所述至少一个备选小区包括：
    若所述用户终端上报的第一测量结果包括所述用户终端的服务小区的邻小区的信号能量信息和/或所述邻小区的信号质量信息，所述源网络侧设备基于所述邻小区的信号能量信息和/或所述邻小区的信号质量信息，从所述服务小区的邻小区中选择的至少一个备选小区；
    或者，
    若所述用户终端上报的第一测量结果未包括所述服务小区的信号能量信息和/或所述服务小区的信号质量信息，所述源网络侧设备预测所述用户终端的方向信息，基于所述方向信息从预先保存的邻区列表中选择的至少一个备选小区。
  89. 根据权利要求87所述的目标网络侧设备，其中
    所述目标小区是所述用户终端基于所述用户终端进行空口测量得到的空口测量结果，从所述至少一个备选小区中选择的目标小区；或者
    所述目标小区是所述源网络侧设备接收所述用户终端上报的所述用户终端进行空口测量得到的空口测量结果，基于所述空口测量结果从所述至少一个备选小区中选择的小区。
  90. 根据权利要求87至89中任一项所述的目标网络侧设备，还包括：
    应答消息发送模块，用于若所述目标网络侧设备已经完成切换准备，则向所述源网络侧设备发送预切换准备应答消息。
  91. 根据权利要求90所述的目标网络侧设备，其中，所述预切换准备应答消息包括如下内容中的至少一项：
    为所述用户终端分配的随机接入信息、配置参数和第二切换条件。
  92. 根据权利要求91所述的目标网络侧设备，其中，所述随机接入信息包括：目标网络侧设备为所述用户终端分配的用户标识符。
  93. 根据权利要求91所述的目标网络侧设备，其中，所述配置参数包括：所述目标网络侧设备为所述用户终端分配的用作所述用户终端进行协议层配置的参数。
  94. 根据权利要求91所述的目标网络侧设备，其中，所述第二切换条件包括所述目标网络侧设备的资源预留时间的资源时效信息，还包括如下内容中的至少一项：
    在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量小于第十三门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区中的窄波束中信号能量或信号质量最好的一个窄波束的信号能量或信号质量大于第十三门限；
    在服务小区中所述用户终端测量到的窄波束中信号能量或信号质量最好的第五预设数量的窄波束的信号能量或信号质量的加权平均值小于第十四门限，或/和，所述用户终端测量到的所述目标网络侧设备对应的小区中的窄波束中信号能量或信号质量最好的第六预设数量的窄波束的信号能量或信号质量的加权平均值大于第十五门限；
    在服务小区中所述用户终端测量到的所有的窄波束的信号能量或信号质量的加权平均值小于第十六门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区所有的窄波束的信号能量或信号质量的加权平均值大于第十七门限；
    在服务小区中所述用户终端测量到的所有的宽波束的信号能量或信号质量的加权平均值小于第十八门限，和/或，所述用户终端测量到的所述目标网 络侧设备对应的小区所有的宽波束的信号能量或信号质量的加权平均值大于第十九门限；
    在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量小于第二十门限，和/或，所述用户终端测量到的所述目标网络侧设备对应的小区中的宽波束中信号能量或信号质量最好的一个宽波束的信号能量或信号质量大于第二十一门限；
    在服务小区中所述用户终端测量到的宽波束中信号能量或信号质量最好的第七预设数量的宽波束的信号能量或信号质量的加权平均值小于第二十二门限，或/和，所述用户终端测量到的所述目标网络侧设备对应的小区中的宽波束中信号能量或信号质量最好的第八预设数量的宽波束的信号能量或信号质量的加权平均值大于第二十三门限。
  95. 根据权利要求87至89中任一项所述的目标网络侧设备，其中，所述预切换准备请求包括所述用户终端的上下文信息和/或资源预留时间。
  96. 根据权利要求87至89中任一项所述的目标网络侧设备，其中，所述切换准备模块，具体用于基于所述预切换准备请求，为所述用户终端预留资源，并建立到所述源网络侧设备的数据通道，所述数据通道用于所述用户终端的数据传输。
  97. 根据权利要求87至89中任一项中任一项所述的目标网络侧设备，其中，所述准备请求接收模块，具体用于通过网络侧设备之间直接连接的接口接收所述源网络侧设备发送的预切换准备请求；或者
    通过核心网设备接收所述源网络侧设备发送的预切换准备请求。
  98. 根据权利要求96所述的目标网络侧设备，其中，所述目标网络侧设备还包括：
    第一释放模块，用于若所述目标网络侧设备的小区不为所述目标小区，则通过网络侧设备之间的接口，接收所述源网络侧设备发送的释放资源请求，并释放为所述用户终端预留的资源；或者
    第二释放模块，用于若所述目标网络侧设备的小区不为所述目标小区，则通过核心网设备，接收所述源网络侧设备发送的释放资源请求，并释放为所述用户终端预留的资源。
  99. 一种同步接入信号块的传输系统，包括如权利要求50至69中任一项所述的源网络侧设备、如权利要求70至86中任一项所述的用户终端以及如权利要求87至98中任一项所述的目标网络侧设备。
  100. 一种源网络侧设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如权利要求1-20中任意一项所述的小区切换方法的步骤。
  101. 一种用户终端，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如权利要求21-37中任意一项所述的小区切换方法的步骤。
  102. 一种目标网络侧设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如权利要求38-49中任意一项所述的小区切换方法的步骤。
  103. 一种同步接入信号块的传输系统，包括如权利要求100所述的源网络侧设备、如权利要求101所述的用户终端以及如权利要求102所述的目标网络侧设备。
  104. 一种计算机可读存储介质，其上存储有计算机程序，所述程序被处理器执行时，实现如权利要求1-20中任意一项所述的小区切换方法的步骤。
  105. 一种计算机可读存储介质，其上存储有计算机程序，所述程序被处理器执行时，实现如权利要求21-37中任意一项所述的小区切换方法的步骤。
  106. 一种计算机可读存储介质，其上存储有计算机程序，所述程序被处理器执行时，实现如权利要求38-49中任意一项所述的小区切换方法的步骤。
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CN115361715A (zh) * 2022-08-15 2022-11-18 中国联合网络通信集团有限公司 基于用户终端的网络资源切换方法、装置及基站

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