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WO2018137652A1 - 一种切换方法、用户设备、基站、通信装置及存储介质 - Google Patents

一种切换方法、用户设备、基站、通信装置及存储介质 Download PDF

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Publication number
WO2018137652A1
WO2018137652A1 PCT/CN2018/073978 CN2018073978W WO2018137652A1 WO 2018137652 A1 WO2018137652 A1 WO 2018137652A1 CN 2018073978 W CN2018073978 W CN 2018073978W WO 2018137652 A1 WO2018137652 A1 WO 2018137652A1
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WIPO (PCT)
Prior art keywords
target cell
access
beams
handover command
base station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2018/073978
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English (en)
French (fr)
Inventor
谢芳
陈宁宇
张晓然
徐晓东
刘光毅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
Original Assignee
China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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Publication date
Application filed by China Mobile Communications Group Co Ltd, Research Institute of China Mobile Communication Co Ltd filed Critical China Mobile Communications Group Co Ltd
Publication of WO2018137652A1 publication Critical patent/WO2018137652A1/zh
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Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the present invention relates to communication management technologies in the field of communications, and in particular, to a handover method, a user equipment, a base station, a communication device, and a storage medium.
  • 3GPP has clearly adopted the handover procedure of LTE as the base line for handover between 5G cells.
  • LTE Mobility Reference Signal
  • the 5G NR cell may generate multiple beams to transmit Mobility Reference Signal (MRS) to support UE mobility management.
  • MRS Mobility Reference Signal
  • multiple beams from the same cell may be detected and reported to the serving cell.
  • the beam that the target cell can simultaneously schedule for one UE needs to consider the quality of the beam received by the UE.
  • Factors such as cell load sharing.
  • the target cell is a beam that can be scheduled by a certain UE, is measured by the UE, or may be inconsistent with the requirements of the UE. Therefore, the UE and the base station need to negotiate and solve the problem.
  • the main object of the present invention is to provide a handover method, a user equipment, a base station, a communication device, and a storage medium, aiming at solving the above problems in the prior art.
  • the present invention provides a handover method, which is applied to a UE, and includes:
  • the switching command includes information about M access beams indicated by the target cell, and/or a maximum number of access beams that the target cell can provide for the UE; X and X are both Is an integer.
  • the present invention provides a handover method applied to a target cell, including:
  • the switching command includes information about M access beams indicated by the target cell, and/or a maximum number of access beams that the target cell can provide for the UE; X and X are both Is an integer.
  • the embodiment of the invention provides a handover method, which is applied to a source cell, and the method includes:
  • the switching command includes information about M access beams indicated by the target cell, and/or a maximum number of access beams that the target cell can provide for the UE; X and X are both Is an integer.
  • An embodiment of the present invention provides a UE, including:
  • a first communication unit configured to be a handover command for a target cell of the UE sent by the source cell, where the handover command includes information about M access beams indicated by the target cell, and/or The maximum number X of access beams that the target cell can provide for the UE; M and X are integers.
  • An embodiment of the present invention provides a UE, including:
  • the first communication interface is configured as a handover command for the target cell of the UE, where the handover command includes the information of the M access beams indicated by the target cell, and/or The maximum number X of access beams that the target cell can provide for the UE; M and X are integers.
  • An embodiment of the present invention provides a first base station, where the first base station includes:
  • the information sending unit is configured to send a switching command to the source cell where the UE is located;
  • the switching command includes information about M access beams indicated by the target cell, and/or a maximum number of access beams that the target cell can provide for the UE; X and X are both Is an integer.
  • An embodiment of the present invention provides a first base station, where the first base station includes:
  • the second communication interface is configured to send a handover command to the source cell where the UE is located;
  • the switching command includes information about M access beams indicated by the target cell, and/or a maximum number of access beams that the target cell can provide for the UE; X and X are both Is an integer.
  • An embodiment of the present invention provides a second base station, where the second base station includes:
  • a third communication unit configured to send a handover command to the UE
  • a fourth communication unit configured to receive a handover command sent by the target cell of the UE, where the handover command includes information about M access beams indicated by the target cell, and/or the target cell
  • the maximum number of access beams that can be provided to the UE X; M and X are integers.
  • An embodiment of the present invention provides a second base station, where the second base station includes:
  • a third communication interface configured to send a handover command to the UE, and receive a handover command sent by the target cell of the UE, where the handover command includes information about M access beams indicated by the target cell, and / or, the maximum number X of access beams that the target cell can provide for the UE; M and X are integers.
  • Embodiments of the present invention provide a communication apparatus including: a processor and a memory for storing a computer program executable on a processor,
  • processor is configured to perform the steps of the foregoing method when the computer program is run.
  • Embodiments of the present invention provide a storage medium storing computer executable instructions that are implemented when the computer executable instructions are executed.
  • the present invention provides a handover method, a user equipment, a base station, a communication device, and a storage medium.
  • the target cell performs beam scheduling for the UE
  • the UE receives M access beams determined by the target cell according to at least one candidate beam. And/or the maximum number X of access beams determined by the target cell, and then random access based on the response of the target cell.
  • a negotiation mechanism is provided for the target cell and the UE, which avoids the problems caused by the beam allocation of the target cell in the prior art and the situation different from the actual measurement by the UE, and improves the coordination between the UE and the target cell.
  • FIG. 1 is a schematic flowchart 1 of a handover method according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart 2 of a handover method according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart 3 of a handover method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a beam coverage scenario according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart 4 of a handover method according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram 1 of a user equipment according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram 2 of a user equipment according to an embodiment of the present invention.
  • Figure 8 is a schematic structural diagram 1 of a base station according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram 2 of a base station according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram 3 of a base station structure according to an embodiment of the present invention.
  • the embodiment provides a handover method, which is applied to a user equipment (UE), and receives a handover command sent by a source cell to a target cell of the UE.
  • UE user equipment
  • the switching command includes information about M access beams indicated by the target cell, and/or a maximum number of access beams that the target cell can provide for the UE; X and X are both Is an integer.
  • the method further includes:
  • the method applied to the UE side provided by this embodiment includes:
  • Step 101 Perform signal quality measurement on a beam sent by the target cell to obtain a quality measurement result for the beam.
  • Step 102 Select at least one candidate beam based on the quality measurement result of the beam, generate report information based on the at least one candidate beam, and send the report information to the source cell.
  • Step 103 Receive a handover command sent by the second base station.
  • Step 104 Initiate random access based on the M access beams indicated in the handover command, and/or the maximum number X of the access beams indicated in the handover command.
  • the first base station where the target cell is located, and the second serving base station where the current serving cell of the UE is located, which is the source cell may be physically the same base station or different base stations. It is not limited in the examples.
  • the MRS included in the beam sent by the target cell may be measured, and the specific measurement manner is not exhaustive in this embodiment.
  • the quality measurement result obtained in step 101 may include one or more of a signal strength of the MRS in the beam, an interference signal strength in the beam, a measured signal to noise ratio, and the like.
  • the UE Before performing step 101, the UE further needs to determine a preset rule corresponding to performing candidate beam selection;
  • the determining of the preset rule may be determined by the UE itself, or may be configured by the second base station where the UE is located;
  • the preset rule may include a quality threshold value of the candidate beam that is determined to be reported, or may determine the maximum number of the reported candidate beams and the quality threshold.
  • the method Before performing step 101, that is, before performing signal quality measurement on the beam sent by the target cell to obtain a quality measurement result for the beam, the method further includes:
  • the measurement configuration information sent by the source cell is received, where the measurement configuration information includes at least the number N of candidate beams that need to be reported, and N is an integer greater than or equal to M.
  • the selecting at least one candidate beam based on the quality measurement result for the beam further includes:
  • N candidate beams are selected from the measured beams.
  • the method for selecting the N candidate beams may be: selecting the N best candidate beams from the currently measured multiple beams; or, may be the target cell from the current measurement.
  • N candidate beams are randomly selected.
  • the best quality criterion can be one or more of the measured maximum strength of the mobile reference signal, the largest signal to noise ratio, and the minimum interference signal strength.
  • the method further includes:
  • the quality threshold may include at least one of the following: a signal strength threshold, an interference strength threshold, and a signal to noise ratio threshold.
  • the selecting at least one candidate beam based on the quality measurement result for the beam further includes:
  • the L beams are used as candidate beams; when L is greater than or equal to N, N beams are selected from the L beams as candidate beams.
  • the method for selecting the N candidate beams may be: selecting the N best candidate beams from the currently measured multiple beams; or, may be the target cell from the current measurement.
  • N candidate beams are randomly selected.
  • the best quality judgment criterion may be one or more of the measured maximum intensity of the mobile reference signal, the largest signal to noise ratio, and the minimum interference signal strength.
  • the handover command obtained in the foregoing step 103 may include the M access beams directly designated by the target cell, and may also include the maximum number X of access beams indicated by the target cell;
  • the UE side can obtain and parse the content in the handover command, specifically:
  • the method further includes:
  • the M access beams selected by the first base station based on the at least one candidate beam.
  • the identifier of the beam may be a bitmap bitmap, where 1 indicates that the corresponding beam can serve the UE, and 0 indicates that it is not. For example, 1001 corresponds to the reported 4 beams, only the first and last one are selected as the target beam of the UE.
  • the identifier of the beam may also be the sequence number of the beam received by the beam in the target cell. If the target cell receives the measurement result of 4 beams, the target cell selects the first and fourth beams for the UE. , then characterized by 00 and 11 respectively.
  • step 104 the random access is initiated, according to the M access beams indicated in the handover command, and/or the maximum number X of the access beams indicated in the handover command, including :
  • the UE selects less than or equal to X beams as the access beam from the beams of the target cell measured by the self measurement, in the X accesses.
  • a random access is initiated in the beam; wherein the method of selecting X beams or less may be the beam with the best quality selection, for example, a beam exceeding a quality threshold may be used as an access beam; specifically, if the target The cell informs the UE of the maximum or exact number of beams X available, and the UE selects no more than X beam from the target cell beam measured by itself, and initiates a random access procedure;
  • the M beams indicated by the cell initiate a random access procedure;
  • the UE selects at least one beam from the measured target cell as a random access beam.
  • the random access beam described herein is different from the foregoing access beam, and the random access beam may be at least partially identical to the M access beams. It may be completely different from the M access beams, and the specific selection method may be at least one beam exceeding a quality threshold or all beams exceeding a quality threshold. It should be further noted that when at least one of the selected beams is used as the random access beam, the number may be equal to or less than M, and may of course be completely independent of M, that is, may be greater than M.
  • the UE may use the UE to select the best M from the target cell beam measured by itself or Randomly select M in the beam exceeding a certain threshold to initiate a random access procedure.
  • the method provided in this embodiment may further include: the target cell selects one or more beams that respond to the random access message, and feeds back the random access response message;
  • the UE receives the random access response message, and then the UE performs data transmission in the target cell with the determined uplink and downlink beams.
  • the best definition can be one beam of the best quality.
  • the definition of the quality is the same as that described above in the embodiment, and no further description is made here.
  • the UE when the target cell performs beam scheduling for the UE, the UE first reports at least one candidate beam according to its own measurement situation, and then receives M connections determined by the target cell according to at least one candidate beam. The incoming beam, and/or the maximum number X of access beams determined by the target cell, is then randomly accessed based on the response of the target cell.
  • a negotiation mechanism is provided for the target cell and the UE, which avoids the problems caused by the beam allocation of the target cell in the prior art and the situation different from the actual measurement by the UE, and improves the coordination between the UE and the target cell. Sexuality and guarantee the quality of communication.
  • the embodiment of the present invention provides a handover method, which is applied to a target cell, where the method includes:
  • the handover command includes the M access beams selected by the target cell based on the at least one candidate beam, and/or the maximum access beam that the target cell can provide for the UE.
  • the number X; M and X are integers.
  • the method further includes:
  • the specific process provided in this embodiment, as shown in FIG. 2, includes:
  • Step 201 Receive report information (specifically, a handover request) of the at least one candidate beam of the target cell to which the UE is to be accessed, where the candidate beam is one of the beams sent by the target cell;
  • the target cell is a cell managed by the first base station; the second base station of the source cell where the UE is currently located is the same as or different from the first base station;
  • Step 202 Selecting M access beams based on the at least one candidate beam, and/or determining, according to the at least one candidate beam, a maximum number of access beams that the target cell can provide for the UE. ; M and X are both integers;
  • Step 203 Generate a handover command based on the M access beams and/or a maximum number X of access beams that can be provided for the UE, and send the handover command to the UE.
  • the first base station where the target cell is located, and the second serving base station where the current serving cell of the UE is located, which is the source cell may be physically the same base station or different base stations. It is not limited in the examples.
  • the MRS included in the beam sent by the target cell is such that the UE can measure the quality of the beam, and the specific measurement manner is not exhaustive in this embodiment.
  • the handover command may include M access beams directly designated by the first base station, and may also include a maximum number X of indicated access beams;
  • a method for directly indicating M access beams is included, specifically:
  • the generating a handover command based on the M access beams and/or the maximum number X of access beams that can be provided by the UE further includes:
  • the generated bitmap is added to the handover command based on the selected M access beam generation bitmaps
  • a handover command is generated based on the M access beams
  • a handover command is generated based on the M access beam beam sequences.
  • the identifier of the beam may be a bitmap bitmap, where 1 indicates that the corresponding beam can serve the UE, and 0 indicates that it is not. For example, 1001 corresponds to the reported 4 beams, only the first and last one are selected as the target beam of the UE.
  • the identifier of the beam may also be the sequence number of the beam received by the beam in the target cell. If the target cell receives the measurement result of 4 beams, the target cell selects the first and fourth beams for the UE. , then characterized by 00 and 11 respectively.
  • the reporting information of the at least one candidate beam that is received by the UE for the target cell that the UE is to access includes:
  • the sending the handover command to the UE includes:
  • the handover command is sent to the UE by managing a second base station of the source cell where the UE is currently located.
  • the process of obtaining the report information and sending the handover command may be forwarded by the second base station of the source cell where the UE is currently located.
  • the method provided in this embodiment may further include: the target cell selects one or more beams that respond to the random access message initiated by the UE, and feeds back a random access response message;
  • the UE receives the random access response message, and then the UE performs data transmission in the target cell with the determined uplink and downlink beams.
  • the best definition can be one beam of the best quality.
  • the definition of the quality is the same as that of the foregoing embodiment, and will not be described again here.
  • the UE when the target cell performs beam scheduling for the UE, the UE first reports at least one candidate beam according to its own measurement situation, and then receives M connections determined by the target cell according to at least one candidate beam. The incoming beam, and/or the maximum number X of access beams determined by the target cell, is then randomly accessed based on the response of the target cell.
  • a negotiation mechanism is provided for the target cell and the UE, which avoids the problems caused by the beam allocation of the target cell in the prior art and the situation different from the actual measurement by the UE, and improves the coordination between the UE and the target cell. Sexuality and guarantee the quality of communication.
  • This embodiment provides a handover method, which is applied to a source cell, where the method includes:
  • the handover command includes the M access beams selected by the target cell based on the at least one candidate beam, and/or the maximum access beam that the target cell can provide for the UE.
  • the number X; M and X are integers.
  • the method further includes:
  • the report information including the at least one candidate beam; generating a handover request based on the report information, sending the handover request to the target cell of the UE, and receiving the target cell feedback
  • the handover command sends the handover command to the UE.
  • the specific processing procedure on the source cell side provided in this embodiment may be as shown in FIG. 3, and includes:
  • Step 301 Receive report information including at least one candidate beam sent by a UE that is in its own service, where the source cell of the UE is a cell managed by the second base station, and the candidate beam is required by the UE.
  • the target cell is a cell managed by the first base station; the second base station is the same as or different from the first base station;
  • Step 302 Generate a handover request based on the report information, send the handover request to the first base station, and receive a handover command fed back by the first base station, and send the handover command to the UE.
  • the M-access beam obtained by the first base station based on the at least one candidate beam, and/or the access beam that the target cell in the first base station can provide for the UE is included in the handover command.
  • the maximum number of X; M and X are integers.
  • the first base station where the target cell is located, and the second serving base station where the current serving cell of the UE is located, which is the source cell may be physically the same base station or different base stations. It is not limited in the examples.
  • the method further includes: before receiving the report information including the at least one candidate beam sent by the UE in the source cell that is managed by itself, the method further includes:
  • the measurement configuration information includes at least the number N of candidate beams that need to be reported, or the measurement configuration information includes at least a quality threshold of the candidate beam that needs to be reported.
  • the number N of candidate beams that need to be reported; N is an integer greater than or equal to M.
  • FIG. 4 provides a detailed description of the overall processing scenario.
  • different cells can send multiple beams, each of which includes one MRS, and the UE passes The MRS of the beam is detected to determine the quality of the beam.
  • the source cell sends four beams, which respectively include reference signals MRS-1 to 4.
  • the four reports sent by the target cell include the reference signal MRS-5.
  • the UE can determine the beam quality by detecting the MRS in the beam.
  • the current serving cell ie, the source cell of the UE, specifically the second base station of the source cell of the UE performs measurement configuration on the UE; and may carry one or a combination of the following information:
  • Measure the quality threshold of the reported beam such as the threshold corresponding to the RSRP/RSRQ/SINR, that is, only the signal quality of the beam exceeds the threshold before being reported to the serving cell;
  • the reported number of beam quality N that is, the UE does not need to report all the beams, only the best N or the best N beams satisfying the aforementioned quality threshold (if the threshold is less than N), the report is satisfied. All beams of the threshold).
  • the UE reports the measurement result, which includes one or a combination of the following information:
  • the quality of the cell calculated by the UE through certain rules
  • the quality threshold is configured, all of the quality thresholds are exceeded (less than N of the threshold) or N best or N random beams, including explicit or implicit IDs;
  • the best quality N (if all of the measured beams are less than N are reported) or all beams, including explicit or implicit IDs;
  • the serving cell initiates a handover request to the target cell, where the bearer may carry: the identity and/or quality of the target cell beam measured by the UE, such as all or the best quality N beam IDs (explicit or implicit) And/or the corresponding beam quality; or all or N best or N random beam IDs that satisfy a certain threshold, and/or quality information of the corresponding beam.
  • the bearer may carry: the identity and/or quality of the target cell beam measured by the UE, such as all or the best quality N beam IDs (explicit or implicit) And/or the corresponding beam quality; or all or N best or N random beam IDs that satisfy a certain threshold, and/or quality information of the corresponding beam.
  • the target cell acknowledgement may allow the UE to switch over, and carry one or a combination of the following information as a handover command in the acknowledgement message to the serving cell:
  • the number M of the maximum beam that can be scheduled for the UE, that is, after the UE accesses the target cell, the M beam can be used to communicate with the target cell.
  • the identifier of the beam that is scheduled for the UE may be explicit or implicit, that is, after the UE accesses the target cell, the specified beam is used to communicate with the target cell;
  • the identifier of the beam may be a bitmap mode, where 1 indicates that the corresponding beam can serve the UE, and 0 indicates that it is not. For example, 1001 corresponds to the reported 4 beams, only the first and last one are selected as the target beam of the UE.
  • the identifier of the beam may also be the sequence number of the beam received by the beam in the target cell. If the target cell receives the measurement result of 4 beams, and the target cell selects the beam ranked first and fourth for the UE, Characterized by 00 and 11 respectively.
  • the UE initiates an access procedure in one beam or multiple beams of the target cell: the target cell selects one or more beams in response to the random access message, and feeds back a random access response message.
  • the UE performs data transmission in the target cell with the determined uplink and downlink beams.
  • the UE when the target cell performs beam scheduling for the UE, the UE first reports at least one candidate beam according to its own measurement situation, and then receives M connections determined by the target cell according to at least one candidate beam. The incoming beam, and/or the maximum number X of access beams determined by the target cell, is then randomly accessed based on the response of the target cell.
  • a negotiation mechanism is provided for the target cell and the UE, which avoids the problems caused by the beam allocation of the target cell in the prior art and the situation different from the actual measurement by the UE, and improves the coordination between the UE and the target cell. Sexuality and guarantee the quality of communication.
  • This embodiment provides a user equipment (UE), where the UE includes:
  • a first communication unit configured to use, by the source cell, a handover command for the target cell of the UE, where the handover command includes M connections selected by the target cell based on the at least one candidate beam.
  • the UE further includes:
  • a second communication unit configured to initiate, according to the handover command, a random access message to the target cell to the at least one access beam
  • the UE further includes:
  • a measuring unit configured to perform signal quality measurement on a beam sent by the target cell to obtain a quality measurement result for the beam
  • a beam selecting unit configured to select at least one candidate beam based on the quality measurement result for the beam, generate report information based on the at least one candidate beam, and send the report information to the source cell.
  • the UE provided in this embodiment may be as shown in FIG. 6 and includes:
  • a measuring unit 61 configured to perform signal quality measurement on a beam sent by the target cell to obtain a quality measurement result for the beam
  • the beam selecting unit 62 is configured to select at least one candidate beam based on the quality measurement result for the beam, generate the reporting information based on the at least one candidate beam, and send the reporting information to the source cell, where the second base station is a serving base station of a source cell where the UE is currently located, where the first base station is the same as or different from the second base station;
  • a first communication unit 63 configured to receive a handover command sent by the second base station, where the handover command includes M access beams selected by the first base station based on the at least one candidate beam, And/or, the maximum number X of access beams that the target cell in the first base station can provide for the UE; M and X are integers;
  • the second communication unit 64 is configured to initiate random access based on the M access beams indicated in the handover command, and/or the maximum number X of the access beams indicated in the handover command.
  • the first base station where the target cell is located, and the second serving base station where the current serving cell of the UE is located, which is the source cell may be physically the same base station or different base stations. It is not limited in the examples.
  • the method for performing quality measurement on the beam of the target cell may be performed for the MRS included in the beam sent by the target cell, and the specific measurement manner is not exhaustive in this embodiment.
  • the obtained quality measurement result may include one or more of a signal strength of the MRS in the beam, an interference signal strength in the beam, a measured signal to noise ratio, and the like.
  • the UE also needs to determine a preset rule corresponding to the candidate beam selection
  • the determining of the preset rule may be determined by the UE itself, or may be configured by the second base station where the UE is located;
  • the preset rule may include a quality threshold value of the candidate beam that is determined to be reported, or may determine the maximum number of the reported candidate beams and the quality threshold.
  • the first communication unit is configured to receive the measurement configuration information sent by the source cell, where the measurement configuration information includes at least the number N of candidate beams that need to be reported, and N is an integer greater than or equal to M;
  • the beam selecting unit is further configured to select N candidate beams from the measured beams based on the number N of candidate beams that need to be reported in the measurement configuration information.
  • the method for selecting the N candidate beams may be: selecting the N best candidate beams from the currently measured multiple beams; or, may be the target cell from the current measurement.
  • N candidate beams are randomly selected.
  • the best quality criterion can be one or more of the measured maximum strength of the mobile reference signal, the largest signal to noise ratio, and the minimum interference signal strength.
  • the first communication unit is configured to receive the measurement configuration information sent by the source cell, where the measurement configuration information includes at least a quality threshold of the candidate beam that needs to be reported, and a number of candidate beams that need to be reported.
  • N is an integer greater than or equal to M;
  • the beam selecting unit is configured to select, according to the quality threshold value in the measurement configuration information, L beams that have a signal quality exceeding the quality threshold from the measured beams; An integer; when L is less than N, the L beams are used as candidate beams; when L is greater than or equal to N, N beams are selected from the L beams as candidate beams.
  • the method for selecting the N candidate beams may be: selecting the N best candidate beams from the currently measured multiple beams; or, may be the target cell from the current measurement.
  • N candidate beams are randomly selected.
  • the best quality judgment criterion may be one or more of the measured maximum intensity of the mobile reference signal, the largest signal to noise ratio, and the minimum interference signal strength.
  • the obtained handover command may include M access beams directly designated by the first base station, and may also include a maximum number X of indicated access beams;
  • the UE side can obtain and parse the content in the handover command, specifically:
  • the second communication unit is configured to determine, according to the bitmap included in the handover command, the M access beams that are selected by the first base station based on the at least one candidate beam;
  • the M access beams selected by the first base station based on the at least one candidate beam.
  • the identifier of the beam may be a bitmap bitmap, where 1 indicates that the corresponding beam can serve the UE, and 0 indicates that it is not. For example, 1001 corresponds to the reported 4 beams, only the first and last one are selected as the target beam of the UE.
  • the identifier of the beam may also be the sequence number of the beam received by the beam in the target cell. If the target cell receives the measurement result of 4 beams, the target cell selects the first and fourth beams for the UE. , then characterized by 00 and 11 respectively.
  • the second communication unit is specifically used for
  • the UE selects less than or equal to X beams as the access beam from the beams of the target cell measured by the self-measurement, in the access beam. Initiating random access;
  • the UE initiates random access based on the M access beams indicated in the handover command.
  • the UE selects at least one beam from the measured target cell as a random access beam. To initiate random access in the random access beam.
  • the method provided in this embodiment may further include: the target cell selects one or more beams that respond to the random access message, and feeds back the random access response message;
  • the UE receives the random access response message by using the second communication unit, and then the UE performs data transmission in the target cell by using the determined uplink and downlink beams.
  • the best definition can be one beam of the best quality.
  • the definition of the quality is the same as that described above in the embodiment, and no further description is made here.
  • the UE when the target cell performs beam scheduling for the UE, the UE first reports at least one candidate beam according to its own measurement situation, and then receives M connections determined by the target cell according to at least one candidate beam. The incoming beam, and/or the maximum number X of access beams determined by the target cell, is then randomly accessed based on the response of the target cell.
  • a negotiation mechanism is provided for the target cell and the UE, which avoids the problems caused by the beam allocation of the target cell in the prior art and the situation different from the actual measurement by the UE, and improves the coordination between the UE and the target cell. Sexuality and guarantee the quality of communication.
  • another UE may be further configured. As shown in FIG. 7, the UE includes:
  • the first communication interface is configured as a handover command for the target cell of the UE, where the handover command includes the information of the M access beams indicated by the target cell, and/or The maximum number X of access beams that the target cell can provide for the UE; M and X are integers.
  • the UE further includes:
  • the first processor is configured to perform signal quality measurement on the beam sent by the target cell to obtain a quality measurement result for the beam; and obtain at least one candidate beam based on the quality measurement result of the beam, and generate report information based on the at least one candidate beam, Sending the reported information to the source cell.
  • the first processor may be configured to perform the functions of the measurement unit and the beam selection unit in the foregoing embodiments, and the specific processing may be the same as the foregoing embodiment, and details are not described herein.
  • An embodiment of the present invention provides a first base station, where the first base station includes:
  • An information sending unit configured to send a handover command to a source cell where the UE is located
  • the handover command includes the M access beams selected by the target cell based on the at least one candidate beam, and/or the maximum access beam that the target cell can provide for the UE.
  • the number X; M and X are integers.
  • the first base station further includes:
  • An information receiving unit configured to receive a random access message sent by the UE from at least one access beam
  • the information sending unit is configured to select one or more access beams from the at least one access beam to send a random access response message to the UE; and the UE performs data by using a target access beam. transmission.
  • the first base station further includes:
  • a beam configuration unit configured to select, according to the at least one candidate beam, the M access beams, and/or the determining, based on the at least one candidate beam, an access beam that the target cell can provide for the UE
  • the maximum number X; M and X are integers;
  • the information receiving unit is configured to receive, by the source cell of the UE, a handover request that includes at least one candidate beam that the UE is to access, where the candidate beam is a target cell to be accessed by the UE One of the transmitted beams; the target cell is a cell managed by the first base station.
  • the first base station is a base station where the target cell to which the UE is located is located. As shown in FIG. 8, the first base station specifically includes:
  • the information receiving unit 71 is configured to receive, by the UE, report information of at least one candidate beam of the target cell that the UE is to access, where the candidate beam is one of the beams sent by the target cell; a cell managed by the first base station; the second base station of the source cell where the UE is currently located is the same as or different from the first base station;
  • a beam configuration unit 72 configured to select, according to the at least one candidate beam, the M access beams, and/or the determining, according to the at least one candidate beam, an access beam that the target cell can provide for the UE
  • the maximum number of X; M and X are integers;
  • the information sending unit 73 is configured to generate a handover command based on the M access beams and/or a maximum number X of access beams that can be provided by the UE, and send the handover command to the UE.
  • the first base station where the target cell is located, and the second serving base station where the current serving cell of the UE is located, which is the source cell may be physically the same base station or different base stations. It is not limited in the examples.
  • the MRS included in the beam sent by the target cell is such that the UE can measure the quality of the beam, and the specific measurement manner is not exhaustive in this embodiment.
  • the handover command may include M access beams directly designated by the first base station, and may also include a maximum number X of indicated access beams;
  • a method for directly indicating M access beams is included, specifically:
  • the information sending unit is configured to: when the switching command is generated based on the M access beams, generate a bitmap according to the selected M access beam generation bitmaps, and add the generated bitmap to the switching command;
  • a handover command is generated based on the M access beams
  • a handover command is generated based on the M access beam beam sequences.
  • the identifier of the beam may be a bitmap bitmap, where 1 indicates that the corresponding beam can serve the UE, and 0 indicates that it is not. For example, 1001 corresponds to the reported 4 beams, only the first and last one are selected as the target beam of the UE.
  • the identifier of the beam may also be the sequence number of the beam received by the beam in the target cell. If the target cell receives the measurement result of 4 beams, the target cell selects the first and fourth beams for the UE. , then characterized by 00 and 11 respectively.
  • the information receiving unit is configured to receive a handover request sent by a second base station that manages a source cell where the UE is currently located, and extract, from the handover request, report information of at least one candidate beam that includes the target cell. ;
  • the information sending unit is configured to send the handover command to the UE by managing a second base station of the source cell where the UE is currently located.
  • the process of obtaining the report information and sending the handover command may be forwarded by the second base station of the source cell where the UE is currently located.
  • the method provided in this embodiment may further include: the target cell selects one or more beams that respond to the random access message initiated by the UE, and feeds back a random access response message;
  • the UE receives the random access response message, and then the UE performs data transmission in the target cell with the determined uplink and downlink beams.
  • the best definition can be one beam of the best quality.
  • the definition of the quality is the same as that of the foregoing embodiment, and will not be described again here.
  • the UE when the target cell performs beam scheduling for the UE, the UE first reports at least one candidate beam according to its own measurement situation, and then receives M connections determined by the target cell according to at least one candidate beam. The incoming beam, and/or the maximum number X of access beams determined by the target cell, is then randomly accessed based on the response of the target cell.
  • a negotiation mechanism is provided for the target cell and the UE, which avoids the problems caused by the beam allocation of the target cell in the prior art and the situation different from the actual measurement by the UE, and improves the coordination between the UE and the target cell. Sexuality and guarantee the quality of communication.
  • FIG. 9 another structure of the first base station may be provided, as shown in FIG. 9, including:
  • the second communication interface is configured to send a handover command to the source cell where the UE is located;
  • the switching command includes information about M access beams indicated by the target cell, and/or a maximum number of access beams that the target cell can provide for the UE; X and X are both Is an integer.
  • the first base station further includes:
  • a second processor configured to select, based on the at least one candidate beam, the M access beams, and/or the determining, based on the at least one candidate beam, an access beam that the target cell can provide for the UE
  • the maximum number X; M and X are integers; a handover request is received from the source cell of the UE that includes at least one candidate beam to be accessed by the UE; wherein the candidate beam is required by the UE
  • the target cell is a cell managed by the first base station.
  • This embodiment provides a second base station, where the second base station includes:
  • a third communication unit configured to send a handover command to the UE
  • a fourth communication unit configured to receive a handover command sent by the target cell of the UE, where the handover command includes M access beams selected by the target cell based on the at least one candidate beam, and / or, the maximum number X of access beams that the target cell can provide for the UE; M and X are integers.
  • the second base station in this embodiment is a base station where the current source cell of the UE is located, and as shown in FIG. 10, the method includes:
  • a third communication unit 81 configured to receive, by the UE that is in its own service, report information that includes at least one candidate beam, where the source cell of the UE is a cell managed by the second base station; One of the beams sent by the target cell to which the UE is to be accessed; the target cell is a cell managed by the first base station; the second base station is the same as or different from the first base station; and the received handover is sent Commanding to the UE;
  • the fourth communication unit 82 is configured to generate a handover request, send the handover request to the first base station, and receive a handover command fed back by the first base station, where the handover command includes The M access beams selected by the first base station based on the at least one candidate beam, and/or the maximum number of access beams that the target cell in the first base station can provide for the UE; And X are both integers.
  • the first base station where the target cell is located, and the second serving base station where the current serving cell of the UE is located, which is the source cell may be physically the same base station or different base stations. It is not limited in the examples.
  • the method further includes: before receiving the report information including the at least one candidate beam sent by the UE in the source cell that is managed by itself, the method further includes:
  • the third communication unit 81 is further configured to send the measurement configuration information to the UE, where the measurement configuration information includes at least the number N of candidate beams that need to be reported, or the measurement configuration information includes at least There are quality thresholds of candidate beams that need to be reported, and the number N of candidate beams that need to be reported; N is an integer greater than or equal to M.
  • the UE when the target cell performs beam scheduling for the UE, the UE first reports at least one candidate beam according to its own measurement situation, and then receives M connections determined by the target cell according to at least one candidate beam. The incoming beam, and/or the maximum number X of access beams determined by the target cell, is then randomly accessed based on the response of the target cell.
  • a negotiation mechanism is provided for the target cell and the UE, which avoids the problems caused by the beam allocation of the target cell in the prior art and the situation different from the actual measurement by the UE, and improves the coordination between the UE and the target cell. Sexuality and guarantee the quality of communication.
  • the embodiment can also provide another structure of the second base station, where the second base station includes:
  • the third communication interface sends a handover command to the UE, and receives a handover command sent by the target cell of the UE, where the handover command includes information about M access beams indicated by the target cell, and/or The maximum number X of access beams that the target cell can provide for the UE; M and X are integers.
  • An embodiment of the present invention further provides a hardware component architecture of a user equipment or a base station, including: at least one processor, a memory, and at least one network interface.
  • the various components are coupled together by a bus system.
  • the memory in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the memory stores the following elements, executable modules or data structures, or a subset thereof, or their extension set:
  • the processor is configured to be able to process the method steps of any one of the foregoing Embodiments 1 to 3, and details are not described herein.
  • the embodiment of the present invention provides a storage medium storing computer executable instructions, and when the computer executable instructions are executed, the method steps of any one of the foregoing embodiments 1 to 3 are implemented.
  • the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better.
  • Implementation Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, computer, device, air conditioner, or network device, etc.) to perform the methods described in various embodiments of the present invention.

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Abstract

本发明公开了一种切换方法、用户设备、基站、通信装置及存储介质，所述方法包括接收到源小区发来的针对所述UE的目标小区的切换命令；其中，所述切换命令中包括有所述目标小区基于所述至少一个候选波束进行选取得到的M个接入波束、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。

Description

一种切换方法、用户设备、基站、通信装置及存储介质
相关申请的交叉引用
本申请基于申请号为201710060471.5、申请日为2017年01月24日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明涉及通信领域中的通信管理技术，尤其涉及一种切换方法、用户设备、基站、通信装置及存储介质。
背景技术
在2016.11的R2#96会上，3GPP已经明确将以LTE的切换流程作为5G小区间切换的base line。而对于5G系统，由于可能工作在6-100GHZ的高频段上，需要依靠多波束来保证公共控制信道、甚至数据信道的覆盖。5G NR cell可能会打出多个beam来发送移动参考信号(Mobility Reference Signal，MRS)来支持UE的移动性管理。
UE做下行测量的时候，可能会测到来自同一cell的多个beam，并上报给服务小区；而目标小区能同时为一个UE调度的beam除了需要考虑UE接收到的beam的质量，还需考虑小区负荷分担等因素。
在多波束的切换过程中，由于小区负荷等原因，目标小区为某个UE可调度的beam、与UE测量到的或者UE的需求可能不一致，因此需要UE与基站间进行协商解决。
发明内容
本发明的主要目的在于提出一种切换方法、用户设备、基站、通信装置及存储介质，旨在解决现有技术中存在的上述问题。
为实现上述目的，本发明提供一种切换方法，应用于UE，包括：
接收到源小区发来的针对所述UE的目标小区的切换命令；
其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
本发明提供一种切换方法，应用于目标小区，包括：
向UE所在的源小区发送切换命令；
其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
本发明实施例提供一种切换方法，应用于源小区，所述方法包括：
接收到UE的目标小区发来的切换命令；
将所述切换命令发送至所述UE；
其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
本发明实施例提供了一种UE，包括：
第一通信单元，配置为源小区发来的针对所述UE的目标小区的切换命令，其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
本发明实施例提供了一种UE，包括：
第一通信接口，配置为源小区发来的针对所述UE的目标小区的切换命令，其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
本发明实施例提供一种第一基站，所述第一基站包括：
信息发送单元，配置为向UE所在的源小区发送切换命令；
其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
本发明实施例提供一种第一基站，所述第一基站包括：
第二通信接口，配置为向UE所在的源小区发送切换命令；
其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
本发明实施例提供一种第二基站，所述第二基站包括：
第三通信单元，配置为将切换命令发送至UE；
第四通信单元，配置为收到UE的目标小区发来的切换命令；其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
本发明实施例提供一种第二基站，所述第二基站包括：
第三通信接口，配置为将切换命令发送至UE；收到UE的目标小区发来的切换命令；其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
本发明实施例提供一种通信装置，包括：处理器和用于存储能够在处 理器上运行的计算机程序的存储器，
其中，所述处理器用于运行所述计算机程序时，执行前述方法的步骤。
本发明实施例提供一种存储介质，所述存储介质存储有计算机可执行指令，所述计算机可执行指令被执行时实现前述方法步骤。
本发明提出的一种切换方法、用户设备、基站、通信装置及存储介质，在目标小区为UE进行波束调度的时候，由UE接收到由目标小区根据至少一个候选波束确定的M个接入波束，和/或目标小区确定的接入波束的最大数量X，进而基于目标小区的响应进行随机接入。如此，为目标小区和UE提供了一种协商机制，就避免了现有技术中目标小区的波束分配、与UE实际测量的不同的情况所产生的问题，提升了UE以及目标小区之间的协调性，并且保证了通信质量。
附图说明
图1为本发明实施例切换方法流程示意图1；
图2为本发明实施例切换方法流程示意图2；
图3为本发明实施例切换方法流程示意图3；
图4为本发明实施例波束覆盖场景示意图
图5为本发明实施例切换方法流程示意图4；
图6为本发明实施例用户设备组成结构示意图1；
图7为本发明实施例用户设备组成结构示意图2；
图8为本发明实施例基站组成结构示意图1；
图9为本发明实施例基站组成结构示意图2；
图10为本发明实施例基站组成结构示意图3。
具体实施方式
下面结合附图和具体实施例对本发明作进一步详细说明。
实施例一、
本实施例提供了一种切换方法，应用于用户设备(UE)，接收到源小区发来的针对所述UE的目标小区的切换命令；
其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
所述方法还包括：
基于所述切换命令，向至少一个接入波束向所述目标小区发起随机接入消息；
接收到目标小区针对所述随机接入消息发来的随机接入响应消息；
基于所述随机接入响应消息确定目标接入波束，与所述目标小区进行数据传输。
具体来说，本实施例提供的应用于UE侧的方法，参见图1所示，包括：
步骤101：对目标小区发出的波束进行信号质量测量得到针对波束的质量测量结果；
步骤102：基于针对波束的质量测量结果选取得到至少一个候选波束，基于所述至少一个候选波束生成上报信息，发送所述上报信息至源小区；
步骤103：接收到第二基站发来的切换命令；
步骤104：基于所述切换命令中指示的所述M个接入波束、和/或所述切换命令中指示的所述接入波束的最大数量X，发起随机接入。
首先需要说明的是，所述目标小区所在的第一基站、与所述UE的当前服务小区也就是源小区所在的第二基站，在物理上可以为同一个基站，也可以为不同基站，本实施例中不对其进行限定。
另外，上述步骤101中针对目标小区的波束进行质量测量的方式，可以为针对目标小区发出的波束中所包含的MRS进行测量，具体的测量方式， 本实施例中不进行穷举。
相应的，步骤101中所得到的质量测量结果中可以包括有波束中MRS的信号强度、波束中的干扰信号强度、测量得到的信噪比等等中的一种或多种。
在执行步骤101之前，所述UE还需要确定进行候选波束选取所对应的预设规则；
所述预设规则的确定可以为UE自身确定，也可以为UE所在的第二基站所配置的；
当UE自身确定时，预设规则可以包括有确定上报的候选波束的质量门限值，或者，可以确定上报的候选波束的最大数量以及质量门限值。
下面着重针对第二基站对UE进行配置进行说明，具体的可以有以下两种场景：
场景一、
执行步骤101之前，也就是所述对目标小区发出的波束进行信号质量测量得到针对波束的质量测量结果之前，所述方法还包括：
接收到源小区发来的测量配置信息，其中，所述测量配置信息中至少包括有需要上报的候选波束的数量N，N为大于等于M的整数。
相应的，在这种场景下，上述步骤102中，所述基于针对波束的质量测量结果选取得到至少一个候选波束，还包括：
基于所述测量配置信息中需要上报的候选波束的数量N，从测量到的波束中选取得到N个候选波束。
具体的，所述选取得到N个候选波束的方法，可以为，从当前测量到的多个波束中，选取质量最好的N个候选波束；或者，可以为从当前测量到的目标小区的多个波束中，随机选取得到N个候选波束。
质量最好的判断标准，可以为测量得到的移动参考信号的强度最大， 信噪比最大，以及干扰信号强度最小中的一种或多种。
场景二、
所述对目标小区发出的波束进行信号质量测量得到针对波束的质量测量结果之前，所述方法还包括：
接收到源小区发来的测量配置信息，其中，所述测量配置信息中至少包括有需要上报的候选波束的质量门限值、以及需要上报的候选波束的数量N；N为大于等于M的整数；质量门限值，可以包括有以下至少之一：信号强度门限值、干扰强度门限值、信噪比门限值。
相应的，所述基于针对波束的质量测量结果选取得到至少一个候选波束，还包括：
基于所述测量配置信息中的所述质量门限值，从测量到的波束中选取信号质量超过所述质量门限值的L个波束；L为整数；
当L小于N时，将所述L个波束作为候选波束；当L大于等于N时，从所述L个波束中选取N个波束作为候选波束。
具体的，所述选取得到N个候选波束的方法，可以为，从当前测量到的多个波束中，选取质量最好的N个候选波束；或者，可以为从当前测量到的目标小区的多个波束中，随机选取得到N个候选波束。
其中，质量最好的判断标准，可以为测量得到的移动参考信号的强度最大，信噪比最大，以及干扰信号强度最小中的一种或多种。
进一步地，上述步骤103中得到的切换命令中可以包括有目标小区直接指定的M个接入波束，也可以包括有目标小区指示的接入波束的最大数量X；
针对切换命令中包括有直接指示M个接入波束的方式，UE侧可以通过对切换命令中的内容进行解析获取，具体的：
所述接收到切换命令之后，所述方法还包括：
从所述切换命令中包含的位图中，确定所述第一基站基于所述至少一个候选波束进行选取得到的M个接入波束；
或者，
从所述切换命令中包含的波束序号，确定所述第一基站基于所述至少一个候选波束进行选取得到的M个接入波束。
也就是说，该波束(beam)的标识可能是位图bitmap的方式，1表示对应的beam可为该UE服务，0则表示不可以。如1001对应着上报的4个beam只有第一个和最后一个被选为UE的目标beam。
或者，该beam的标识也可能是该beam在目标小区接收到的beam中的序号，如目标小区接收到了4个beam的测量结果，目标小区为该UE选择了排在第一和第四的beam，则用00和11分别表征。
最后，步骤104中，所述基于所述切换命令中指示的所述M个接入波束、和/或所述切换命令中指示的所述接入波束的最大数量X，发起随机接入，包括：
当所述切换命令中指示有接入波束的最大数量X时，所述UE从自身测量测到的目标小区的波束中选取小于等于X个波束作为接入波束，以在所述X个接入波束中发起随机接入；其中，所述选取小于等于X个波束的方式可以为选择质量最好的波束，比如，可以为超过质量门限值的波束作为接入波束；具体来说，如果目标小区告知UE可用的最大或确切的beam数量X，那么UE从自己测量到的目标小区beam中选不多于X beam，发起随机接入过程；
当所述切换命令中指示有M个接入波束、且目标小区中的信号质量为收发一致时，所述UE基于所述切换命令中指示的所述M个接入波束发起随机接入；也就是说，可以在这M个接入波束中全部发起随机接入；具体的，如果目标小区已经告知UE可用的M(M>＝1)个beam标识、且TX/RX  correspondence，那么UE使用目标小区指示的M个beam，发起随机接入过程；
当所述切换命令中指示有M个接入波束、且目标小区中的信号质量为收发不一致时，所述UE从自身测量测到的目标小区的波束中选取至少一个波束作为随机接入波束，以在所述随机接入波束中发起随机接入；需要理解的是，这里描述的随机接入波束与前述的接入波束不相同，随机接入波束可以与M个接入波束至少部分相同，也可以与所述M个接入波束完全不同，其具体的选取方法可以为超过质量门限值的至少一个波束，也可以为超过质量门限值的全部波束。进一步需要指出的是，其中选取的至少一个波束作为随机接入波束时，数量可以等于或小于M个，当然也可以与M完全无关，也就是还可以大于M个。比如，如果目标小区已经告知UE可用的M(M>＝1)个beam标识、且不满足TX/RX correspondence，那么UE可使用那么UE从自己测量到的目标小区beam中选最好的M个或者随机在超过一定门限的beam中选M个，发起随机接入过程。
还需要说明的是，完成上述步骤104之后，本实施例提供的方法还可以包括：目标小区选择回应随机接入消息的一个或多个beam，并反馈随机接入响应消息；
所述UE接收到所述随机接入响应消息，然后所述UE在目标小区中用确定好的上下行beam进行数据传输。其中，最好的定义可以为质量最好的一个波束。关于质量的定义与本实施例前述相同，这里不再进行赘述。
可见，通过采用上述方案，就能够在目标小区为UE进行波束调度的时候，由UE先根据自身的测量情况上报至少一个候选波束，再接收到由目标小区根据至少一个候选波束确定的M个接入波束，和/或目标小区确定的接入波束的最大数量X，进而基于目标小区的响应进行随机接入。如此，为目标小区和UE提供了一种协商机制，就避免了现有技术中目标小区的波束 分配、与UE实际测量的不同的情况所产生的问题，提升了UE以及目标小区之间的协调性，并且保证了通信质量。
实施例二、
本发明实施例提供了一种切换方法，应用于目标小区，其中，所述方法包括：
向UE所在的源小区发送切换命令；
其中，所述切换命令中包括有所述目标小区基于所述至少一个候选波束进行选取得到的M个接入波束、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
所述方法还包括：
接收到所述UE从至少一个接入波束发来的随机接入消息；
从所述至少一个接入波束中选取一个或多个接入波束向所述UE发送随机接入响应消息；
与所述UE通过目标接入波束进行数据传输。
本实施例提供的具体流程，如图2所示，包括：
步骤201：接收到UE针对其所要接入的目标小区的至少一个候选波束的上报信息(具体可以为切换请求)；其中，所述候选波束为所述目标小区发出的波束中的一个；所述目标小区为第一基站管理的小区；所述UE当前所在源小区的第二基站与所述第一基站相同或不同；
步骤202：基于所述至少一个候选波束进行选取得到的M个接入波束、和/或、所述基于所述至少一个候选波束确定目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数；
步骤203：基于所述M个接入波束和/或能够为所述UE提供的接入波束的最大数量X生成切换命令，发送所述切换命令至所述UE。
首先需要说明的是，所述目标小区所在的第一基站、与所述UE的当前 服务小区也就是源小区所在的第二基站，在物理上可以为同一个基站，也可以为不同基站，本实施例中不对其进行限定。
另外，目标小区发出的波束中所包含的MRS以使得UE能够对波束的质量进行测量，具体的测量方式，本实施例中不进行穷举。
进一步地，切换命令中可以包括有第一基站直接指定的M个接入波束，也可以包括有指示的接入波束的最大数量X；
针对切换命令中包括有直接指示M个接入波束的方式，具体的：
所述基于所述M个接入波束和/或能够为所述UE提供的接入波束的最大数量X生成切换命令，还包括：
当基于所述M个接入波束生成切换命令时，基于选取得到的M个接入波束生成位图，将生成的位图添加至所述切换命令中；
或者，
当基于所述M个接入波束生成切换命令时，基于所述M个接入波束波束序号生成切换命令。
也就是说，该波束(beam)的标识可能是位图bitmap的方式，1表示对应的beam可为该UE服务，0则表示不可以。如1001对应着上报的4个beam只有第一个和最后一个被选为UE的目标beam。
或者，该beam的标识也可能是该beam在目标小区接收到的beam中的序号，如目标小区接收到了4个beam的测量结果，目标小区为该UE选择了排在第一和第四的beam，则用00和11分别表征。
所述接收到UE针对其所要接入的目标小区的至少一个候选波束的上报信息，包括：
接收到管理所述UE当前所在源小区的第二基站发来的切换请求，从所述切换请求中提取得到包含有所述目标小区的至少一个候选波束的上报信息；
相应的，所述发送所述切换命令至所述UE，包括：
通过管理所述UE当前所在源小区的第二基站，将所述切换命令发送至所述UE。
也就是说，获取到上报信息以及发送切换命令的过程，均可以为通过所述UE当前所在源小区的第二基站进行转发。
还需要说明的是，完成上述步骤203之后，本实施例提供的方法还可以包括：目标小区选择回应UE发起的随机接入消息的一个或多个beam，并反馈随机接入响应消息；
所述UE接收到所述随机接入响应消息，然后所述UE在目标小区中用确定好的上下行beam进行数据传输。其中，最好的定义可以为质量最好的一个波束。关于质量的定义与前述实施例前述，这里不再进行赘述。
可见，通过采用上述方案，就能够在目标小区为UE进行波束调度的时候，由UE先根据自身的测量情况上报至少一个候选波束，再接收到由目标小区根据至少一个候选波束确定的M个接入波束，和/或目标小区确定的接入波束的最大数量X，进而基于目标小区的响应进行随机接入。如此，为目标小区和UE提供了一种协商机制，就避免了现有技术中目标小区的波束分配、与UE实际测量的不同的情况所产生的问题，提升了UE以及目标小区之间的协调性，并且保证了通信质量。
实施例三、
本实施例提供了一种切换方法，应用于源小区，其中，所述方法包括：
接收到UE的目标小区发来的切换命令；
将所述切换命令发送至所述UE；
其中，所述切换命令中包括有所述目标小区基于所述至少一个候选波束进行选取得到的M个接入波束、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
所述方法还包括：
接收到处于自身服务的UE发来的包括有至少一个候选波束的上报信息；基于所述上报信息生成切换请求，将所述切换请求发送至所述UE的目标小区，接收到所述目标小区反馈的切换命令，发送所述切换命令至所述UE。
本实施例提供的源小区侧的具体处理流程，可以如图3所示，包括：
步骤301：接收到处于自身服务的UE发来的包括有至少一个候选波束的上报信息；其中，所述UE的源小区为所述第二基站管理的小区；所述候选波束为所述UE所要接入的目标小区发出的波束中的一个；所述目标小区为第一基站管理的小区；所述第二基站与所述第一基站相同或不同；
步骤302：基于所述上报信息生成切换请求，将所述切换请求发送至所述第一基站，并接收到所述第一基站反馈的切换命令，并发送所述切换命令至所述UE；所述切换命令中包括有所述第一基站基于所述至少一个候选波束进行选取得到的M个接入波束、和/或、所述第一基站中目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
首先需要说明的是，所述目标小区所在的第一基站、与所述UE的当前服务小区也就是源小区所在的第二基站，在物理上可以为同一个基站，也可以为不同基站，本实施例中不对其进行限定。
下面着重针对第二基站对UE进行配置进行说明，所述接收到处于自身管理的源小区中的UE发来的包括有至少一个候选波束的上报信息之前，所述方法还包括：
向所述UE发送测量配置信息，其中，所述测量配置信息中至少包括有需要上报的候选波束的数量N，或者，所述测量配置信息中至少包括有需要上报的候选波束的质量门限值、以及需要上报的候选波束的数量N；N为大于等于M的整数。
结合图4、图5以及前述三个实施例，下面对整体处理场景提供详细说明，图4中能够看出不同的小区可以发出多个波束，每一个波束均包括有一个MRS，UE则通过检测波束的MRS来确定波束的质量，具体的，图中示出源小区发出四个波束，分别包括参考信号MRS-1～4，目标小区发出的四个报数中包含有参考信号MRS-5～8，UE可以通过检测波束中的MRS确定波束质量。进一步的，结合图5进行详细流程说明：
0、当前服务小区(即UE的源小区，具体来说为UE的源小区的第二基站)给UE做测量配置；其中可携带下列信息之一或组合：
测量上报的beam的质量门限，如RSRP/RSRQ/SINR对应的门限，即只有beam的信号质量超过该门限才需上报给服务小区；
上报的beam质量的数目N，即UE不用上报所有的beam，只需上报最好的N个，或者是满足前述质量门限的最好的N个beam(如果满足门限的不足N个，则上报满足门限的所有beam)。
1、UE上报测量结果，其中包括下列信息之一或组合：
UE通过一定规则计算出来的小区质量；
如果配置了质量门限，则上报超过质量门限的所有的(超过门限的不足N个时)或N个最好的或N个随机的beam，包括显式或隐式的ID；
如果没有配置质量门限，则上报质量最好的N个(如果测量到的beam不足N个则全部上报)或全部的beam，包括显式或隐式的ID；
上述应上报的beam对应的质量信息。
2、服务小区向目标小区发起切换请求，其中可携带：该UE测量到的目标小区beam的标识和/或质量情况，如全部或质量最好的N个beam ID(显式或隐式的)、和/或对应的beam质量；或满足一定门限的所有或N个最好的或N个随机的beam ID、和/或对应的beam的质量信息。
3、目标小区确认可以允许UE切换过去，并在给服务小区的确认消息 中携带如下信息之一或组合作为切换命令：
可为该UE调度的最大beam的数M，即UE在接入目标小区之后，最多可使用M个beam与目标小区进行通信；
为该UE调度的beam的数M，即UE在接入目标小区之后，使用M个beam与目标小区进行通信；
为该UE调度的beam的标识，该标识可能是显式的或隐式的，即UE在接入目标小区之后，使用这些指定的beam与目标小区进行通信；
特别的，该beam的标识可能是bitmap的方式，1表示对应的beam可为该UE服务，0则表示不可以。如1001对应着上报的4个beam只有第一个和最后一个被选为UE的目标beam。
该beam的标识也可能是该beam在目标小区接收到的beam中的序号，如目标小区接收到了4个beam的测量结果，目标小区为该UE选择了排在第一和第四的beam，则用00和11分别表征。
4、UE在目标小区的一个beam或多个beam发起接入过程：目标小区选择回应随机接入消息的一个或多个beam，并反馈随机接入响应消息。
UE在目标小区中用确定好的上下行beam进行数据传输。
可见，通过采用上述方案，就能够在目标小区为UE进行波束调度的时候，由UE先根据自身的测量情况上报至少一个候选波束，再接收到由目标小区根据至少一个候选波束确定的M个接入波束，和/或目标小区确定的接入波束的最大数量X，进而基于目标小区的响应进行随机接入。如此，为目标小区和UE提供了一种协商机制，就避免了现有技术中目标小区的波束分配、与UE实际测量的不同的情况所产生的问题，提升了UE以及目标小区之间的协调性，并且保证了通信质量。
实施例四、
本实施例提供了一种用户设备(UE)，所述UE包括：
第一通信单元，用于源小区发来的针对所述UE的目标小区的切换命令，其中，所述切换命令中包括有所述目标小区基于所述至少一个候选波束进行选取得到的M个接入波束、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
所述UE还包括：
第二通信单元，用于基于所述切换命令，向至少一个接入波束向所述目标小区发起随机接入消息；
接收到目标小区针对所述随机接入消息发来的随机接入响应消息；
基于所述随机接入响应消息确定目标接入波束，与所述目标小区进行数据传输。
所述UE还包括：
测量单元，用于对目标小区发出的波束进行信号质量测量得到针对波束的质量测量结果；
波束选取单元，用于基于针对波束的质量测量结果选取得到至少一个候选波束，基于所述至少一个候选波束生成上报信息，发送所述上报信息至源小区。
本实施例提供的UE，可以如图6所示，包括：
测量单元61，用于对目标小区发出的波束进行信号质量测量得到针对波束的质量测量结果；
波束选取单元62，用于基于针对波束的质量测量结果选取得到至少一个候选波束，基于所述至少一个候选波束生成上报信息，发送所述上报信息至源小区；其中，所述第二基站为所述UE当前所在源小区的服务基站，所述第一基站与所述第二基站相同或不同；
第一通信单元63，用于接收到第二基站发来的切换命令，其中，所述 切换命令中包括有所述第一基站基于所述至少一个候选波束进行选取得到的M个接入波束、和/或、所述第一基站中目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数；
第二通信单元64，用于基于所述切换命令中指示的所述M个接入波束、和/或所述切换命令中指示的所述接入波束的最大数量X，发起随机接入。
首先需要说明的是，所述目标小区所在的第一基站、与所述UE的当前服务小区也就是源小区所在的第二基站，在物理上可以为同一个基站，也可以为不同基站，本实施例中不对其进行限定。
另外，针对目标小区的波束进行质量测量的方式，可以为针对目标小区发出的波束中所包含的MRS进行测量，具体的测量方式，本实施例中不进行穷举。
相应的，所得到的质量测量结果中可以包括有波束中MRS的信号强度、波束中的干扰信号强度、测量得到的信噪比等等中的一种或多种。
所述UE还需要确定进行候选波束选取所对应的预设规则；
所述预设规则的确定可以为UE自身确定，也可以为UE所在的第二基站所配置的；
当UE自身确定时，预设规则可以包括有确定上报的候选波束的质量门限值，或者，可以确定上报的候选波束的最大数量以及质量门限值。
下面着重针对第二基站对UE进行配置进行说明，具体的可以有以下两种场景：
场景一、
所述第一通信单元，用于接收到源小区发来的测量配置信息，其中，所述测量配置信息中至少包括有需要上报的候选波束的数量N，N为大于等于M的整数；
相应的，所述波束选取单元，还用于基于所述测量配置信息中需要上 报的候选波束的数量N，从测量到的波束中选取得到N个候选波束。
具体的，所述选取得到N个候选波束的方法，可以为，从当前测量到的多个波束中，选取质量最好的N个候选波束；或者，可以为从当前测量到的目标小区的多个波束中，随机选取得到N个候选波束。
质量最好的判断标准，可以为测量得到的移动参考信号的强度最大，信噪比最大，以及干扰信号强度最小中的一种或多种。
场景二、
所述第一通信单元，用于接收到源小区发来的测量配置信息，其中，所述测量配置信息中至少包括有需要上报的候选波束的质量门限值、以及需要上报的候选波束的数量N；N为大于等于M的整数；
相应的，所述波束选取单元，具体用于基于所述测量配置信息中的所述质量门限值，从测量到的波束中选取信号质量超过所述质量门限值的L个波束；L为整数；当L小于N时，将所述L个波束作为候选波束；当L大于等于N时，从所述L个波束中选取N个波束作为候选波束。
具体的，所述选取得到N个候选波束的方法，可以为，从当前测量到的多个波束中，选取质量最好的N个候选波束；或者，可以为从当前测量到的目标小区的多个波束中，随机选取得到N个候选波束。
其中，质量最好的判断标准，可以为测量得到的移动参考信号的强度最大，信噪比最大，以及干扰信号强度最小中的一种或多种。
进一步地，得到的切换命令中可以包括有第一基站直接指定的M个接入波束，也可以包括有指示的接入波束的最大数量X；
针对切换命令中包括有直接指示M个接入波束的方式，UE侧可以通过对切换命令中的内容进行解析获取，具体的：
所述第二通信单元，具体用于从所述切换命令中包含的位图中，确定所述第一基站基于所述至少一个候选波束进行选取得到的M个接入波束；
或者，
从所述切换命令中包含的波束序号，确定所述第一基站基于所述至少一个候选波束进行选取得到的M个接入波束。
也就是说，该波束(beam)的标识可能是位图bitmap的方式，1表示对应的beam可为该UE服务，0则表示不可以。如1001对应着上报的4个beam只有第一个和最后一个被选为UE的目标beam。
或者，该beam的标识也可能是该beam在目标小区接收到的beam中的序号，如目标小区接收到了4个beam的测量结果，目标小区为该UE选择了排在第一和第四的beam，则用00和11分别表征。
最后，所述第二通信单元，具体用于
当所述切换命令中指示有接入波束的最大数量X时，所述UE从自身测量测到的目标小区的波束中选取小于等于X个波束作为接入波束，以在所述接入波束中发起随机接入；
当所述切换命令中指示有M个接入波束、且目标小区中的信号质量为收发一致时，所述UE基于所述切换命令中指示的所述M个接入波束发起随机接入；
当所述切换命令中指示有M个接入波束、且目标小区中的信号质量为收发不一致时，所述UE从自身测量测到的目标小区的波束中选取至少一个波束作为随机接入波束，以在所述随机接入波束中发起随机接入。
还需要说明的是，本实施例提供的方法还可以包括：目标小区选择回应随机接入消息的一个或多个beam，并反馈随机接入响应消息；
所述UE通过第二通信单元接收到所述随机接入响应消息，然后所述UE在目标小区中用确定好的上下行beam进行数据传输。其中，最好的定义可以为质量最好的一个波束。关于质量的定义与本实施例前述相同，这里不再进行赘述。
可见，通过采用上述方案，就能够在目标小区为UE进行波束调度的时候，由UE先根据自身的测量情况上报至少一个候选波束，再接收到由目标小区根据至少一个候选波束确定的M个接入波束，和/或目标小区确定的接入波束的最大数量X，进而基于目标小区的响应进行随机接入。如此，为目标小区和UE提供了一种协商机制，就避免了现有技术中目标小区的波束分配、与UE实际测量的不同的情况所产生的问题，提升了UE以及目标小区之间的协调性，并且保证了通信质量。
另外，在本实施例的基础上，还可以提供另一种UE的结构，如图7所示，所述UE包括：
第一通信接口，配置为源小区发来的针对所述UE的目标小区的切换命令，其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
所述UE还包括：
第一处理器，配置为对目标小区发出的波束进行信号质量测量得到针对波束的质量测量结果；基于针对波束的质量测量结果选取得到至少一个候选波束，基于所述至少一个候选波束生成上报信息，发送所述上报信息至源小区。
其中，所述第一处理器，可以能够执行前述实施例中的测量单元、以及波束选取单元的功能，其具体的处理可以与前述实施例相同，这里不再进行赘述。
实施例五、
本发明实施例提供了一种第一基站，所述第一基站包括：
信息发送单元，用于向UE所在的源小区发送切换命令；
其中，所述切换命令中包括有所述目标小区基于所述至少一个候选波 束进行选取得到的M个接入波束、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
所述第一基站还包括：
信息接收单元，用于接收到所述UE从至少一个接入波束发来的随机接入消息；
相应的，所述信息发送单元，用于从所述至少一个接入波束中选取一个或多个接入波束向所述UE发送随机接入响应消息；与所述UE通过目标接入波束进行数据传输。
所述第一基站还包括：
波束配置单元，用于基于所述至少一个候选波束进行选取得到的M个接入波束、和/或、所述基于所述至少一个候选波束确定目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数；
所述信息接收单元，用于接收到UE的源小区发来的包含有所述UE所要接入的至少一个候选波束的切换请求；其中，所述候选波束为所述UE所要接入的目标小区发出的波束中的一个；所述目标小区为第一基站管理的小区。
本实施例所述第一基站为UE所在接入的目标小区所在的基站，如图8所示，所述第一基站具体包括：
信息接收单元71，用于接收到UE针对其所要接入的目标小区的至少一个候选波束的上报信息；其中，所述候选波束为所述目标小区发出的波束中的一个；所述目标小区为第一基站管理的小区；所述UE当前所在源小区的第二基站与所述第一基站相同或不同；
波束配置单元72，用于基于所述至少一个候选波束进行选取得到的M个接入波束、和/或、所述基于所述至少一个候选波束确定目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数；
信息发送单元73，用于基于所述M个接入波束和/或能够为所述UE提供的接入波束的最大数量X生成切换命令，发送所述切换命令至所述UE。
首先需要说明的是，所述目标小区所在的第一基站、与所述UE的当前服务小区也就是源小区所在的第二基站，在物理上可以为同一个基站，也可以为不同基站，本实施例中不对其进行限定。
另外，目标小区发出的波束中所包含的MRS以使得UE能够对波束的质量进行测量，具体的测量方式，本实施例中不进行穷举。
进一步地，切换命令中可以包括有第一基站直接指定的M个接入波束，也可以包括有指示的接入波束的最大数量X；
针对切换命令中包括有直接指示M个接入波束的方式，具体的：
所述信息发送单元，用于当基于所述M个接入波束生成切换命令时，基于选取得到的M个接入波束生成位图，将生成的位图添加至所述切换命令中；
或者，
当基于所述M个接入波束生成切换命令时，基于所述M个接入波束波束序号生成切换命令。
也就是说，该波束(beam)的标识可能是位图bitmap的方式，1表示对应的beam可为该UE服务，0则表示不可以。如1001对应着上报的4个beam只有第一个和最后一个被选为UE的目标beam。
或者，该beam的标识也可能是该beam在目标小区接收到的beam中的序号，如目标小区接收到了4个beam的测量结果，目标小区为该UE选择了排在第一和第四的beam，则用00和11分别表征。
所述信息接收单元，用于接收到管理所述UE当前所在源小区的第二基站发来的切换请求，从所述切换请求中提取得到包含有所述目标小区的至少一个候选波束的上报信息；
相应的，所述信息发送单元，用于通过管理所述UE当前所在源小区的第二基站，将所述切换命令发送至所述UE。
也就是说，获取到上报信息以及发送切换命令的过程，均可以为通过所述UE当前所在源小区的第二基站进行转发。
还需要说明的是，本实施例提供的方法还可以包括：目标小区选择回应UE发起的随机接入消息的一个或多个beam，并反馈随机接入响应消息；
所述UE接收到所述随机接入响应消息，然后所述UE在目标小区中用确定好的上下行beam进行数据传输。其中，最好的定义可以为质量最好的一个波束。关于质量的定义与前述实施例前述，这里不再进行赘述。
可见，通过采用上述方案，就能够在目标小区为UE进行波束调度的时候，由UE先根据自身的测量情况上报至少一个候选波束，再接收到由目标小区根据至少一个候选波束确定的M个接入波束，和/或目标小区确定的接入波束的最大数量X，进而基于目标小区的响应进行随机接入。如此，为目标小区和UE提供了一种协商机制，就避免了现有技术中目标小区的波束分配、与UE实际测量的不同的情况所产生的问题，提升了UE以及目标小区之间的协调性，并且保证了通信质量。
另外，在本实施例的基础上，还可以提供另一种第一基站的结构，如图9所示，包括：
第二通信接口，配置为向UE所在的源小区发送切换命令；
其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
所述第一基站还包括：
第二处理器，配置为基于所述至少一个候选波束进行选取得到的M个接入波束、和/或、所述基于所述至少一个候选波束确定目标小区能够为所述 UE提供的接入波束的最大数量X；M和X均为整数；接收到UE的源小区发来的包含有所述UE所要接入的至少一个候选波束的切换请求；其中，所述候选波束为所述UE所要接入的目标小区发出的波束中的一个；所述目标小区为第一基站管理的小区。
实施例六、
本实施例提供了一种第二基站，所述第二基站包括：
第三通信单元，用于将切换命令发送至UE；
第四通信单元，用于收到UE的目标小区发来的切换命令；其中，所述切换命令中包括有所述目标小区基于所述至少一个候选波束进行选取得到的M个接入波束、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
本实施例所述的第二基站为所述UE当前的源小区所在的基站，可以如图10所示，包括：
第三通信单元81，用于接收到处于自身服务的UE发来的包括有至少一个候选波束的上报信息；其中，所述UE的源小区为所述第二基站管理的小区；所述候选波束为所述UE所要接入的目标小区发出的波束中的一个；所述目标小区为第一基站管理的小区；所述第二基站与所述第一基站相同或不同；并发送接收到的切换命令至所述UE；
第四通信单元82，用于基于所述上报信息生成切换请求，将所述切换请求发送至所述第一基站，并接收到所述第一基站反馈的切换命令；所述切换命令中包括有所述第一基站基于所述至少一个候选波束进行选取得到的M个接入波束、和/或、所述第一基站中目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
首先需要说明的是，所述目标小区所在的第一基站、与所述UE的当前服务小区也就是源小区所在的第二基站，在物理上可以为同一个基站，也 可以为不同基站，本实施例中不对其进行限定。
下面着重针对第二基站对UE进行配置进行说明，所述接收到处于自身管理的源小区中的UE发来的包括有至少一个候选波束的上报信息之前，所述方法还包括：
所述第三通信单元81，还用于向所述UE发送测量配置信息，其中，所述测量配置信息中至少包括有需要上报的候选波束的数量N，或者，所述测量配置信息中至少包括有需要上报的候选波束的质量门限值、以及需要上报的候选波束的数量N；N为大于等于M的整数。
可见，通过采用上述方案，就能够在目标小区为UE进行波束调度的时候，由UE先根据自身的测量情况上报至少一个候选波束，再接收到由目标小区根据至少一个候选波束确定的M个接入波束，和/或目标小区确定的接入波束的最大数量X，进而基于目标小区的响应进行随机接入。如此，为目标小区和UE提供了一种协商机制，就避免了现有技术中目标小区的波束分配、与UE实际测量的不同的情况所产生的问题，提升了UE以及目标小区之间的协调性，并且保证了通信质量。
本实施例还能够提供另外一种第二基站的结构，所述第二基站包括：
第三通信接口，将切换命令发送至UE；收到UE的目标小区发来的切换命令；其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
本发明实施例还提供了一种用户设备或者基站的硬件组成架构，包括：至少一个处理器、存储器、至少一个网络接口。各个组件通过总线系统耦合在一起。
可以理解，本发明实施例中的存储器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。
在一些实施方式中，存储器存储了如下的元素，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：
操作系统和应用程序。
其中，所述处理器配置为：能够处理前述实施例一至三任一项的方法步骤，这里不再进行赘述。
本发明实施例提供的一种存储介质，所述存储介质存储有计算机可执行指令，所述计算机可执行指令被执行时实施前述实施例一至三任一项的方法步骤。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
上述本发明实施例序号仅仅为了描述，不代表实施例的优劣。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献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(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，装置，空调器，或者网络设备等)执行本发明各个实施例所述的方法。
以上仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接 或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (37)

  1. 一种切换方法，应用于用户设备UE，所述方法包括：
    接收到源小区发来的针对所述UE的目标小区的切换命令；
    其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
  2. 根据权利要求1所述的方法，其中，所述方法还包括：
    基于所述切换命令，通过至少一个接入波束向所述目标小区发起随机接入消息。
  3. 根据权利要求1所述的方法，其中，所述方法还包括：
    接收到目标小区在至少一个接入波束反馈的随机接入响应消息。
  4. 根据权利要求1-3任一项所述的方法，其中，所述方法还包括：
    对目标小区发出的波束进行信号质量测量得到针对波束的质量测量结果；
    基于针对波束的质量测量结果选取得到至少一个候选波束，基于所述至少一个候选波束生成上报信息，发送所述上报信息至源小区。
  5. 根据权利要求4所述的方法，其中，所述基于所述切换命令，向至少一个接入波束向所述目标小区发起随机接入消息，包括：
    基于所述切换命令中指示的所述M个接入波束、和/或所述切换命令中指示的所述接入波束的最大数量X，发起随机接入。
  6. 根据权利要求4所述的方法，其中，所述对目标小区发出的波束进行信号质量测量得到针对波束的质量测量结果之前，所述方法还包括：
    接收到源小区发来的测量配置信息，其中，所述测量配置信息中至少包括有需要上报的候选波束的数量N，N为大于等于M的整数；
    相应的，所述基于针对波束的质量测量结果选取得到至少一个候选波束，还包括：
    基于所述测量配置信息中需要上报的候选波束的数量N，从测量到的波束中选取得到N个候选波束。
  7. 根据权利要求4所述的方法，其中，所述对目标小区发出的波束进行信号质量测量得到针对波束的质量测量结果之前，所述方法还包括：
    接收到源小区发来的测量配置信息，其中，所述测量配置信息中至少包括有需要上报的候选波束的质量门限值、以及需要上报的候选波束的数量N；N为大于等于M的整数；
    相应的，所述基于针对波束的质量测量结果选取得到至少一个候选波束，还包括：
    基于所述测量配置信息中的所述质量门限值，从测量到的波束中选取信号质量超过所述质量门限值的L个波束；L为整数；
    当L小于N时，将所述L个波束作为候选波束；当L大于等于N时，从所述L个波束中选取N个波束作为候选波束。
  8. 根据权利要求1所述的方法，其中，所述接收到目标小区发来的切换命令之后，所述方法还包括：
    从所述切换命令中包含的位图中，确定所述目标小区基于所述至少一个候选波束进行选取得到的M个接入波束；
    或者，
    从所述切换命令中包含的波束序号，确定所述目标小区基于所述至少一个候选波束进行选取得到的M个接入波束。
  9. 根据权利要求1任一项所述的方法，其中，所述基于所述切换命令中指示的所述M个接入波束、和/或所述切换命令中指示的所述接入波束的最大数量X，发起随机接入，包括：
    当所述切换命令中指示有接入波束的最大数量X时，所述UE从自身测量测到的目标小区的波束中选取小于等于X个波束作为接入波束，以在所述接入波束中发起随机接入；
    当所述切换命令中指示有M个接入波束、且目标小区中的信号质量为收发一致时，所述UE基于所述切换命令中指示的所述M个接入波束发起随机接入；
    当所述切换命令中指示有M个接入波束、且目标小区中的信号质量为收发不一致时，所述UE从自身测量测到的目标小区的波束中选取至少一个波束作为随机接入波束，以在所述随机接入波束中发起随机接入。
  10. 一种切换方法，应用于目标小区，所述方法包括：
    向UE所在的源小区发送切换命令；
    其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
  11. 根据权利要求10所述的方法，其中，所述方法还包括：
    接收到所述UE从至少一个接入波束发来的随机接入消息。
  12. 根据权利要求11所述的方法，其中，所述方法还包括：
    从所述至少一个接入波束中选取一个或多个接入波束向所述UE发送随机接入响应消息。
  13. 根据权利要求12所述的方法，其中，所述方法还包括：
    接收到UE的源小区发来的包含有所述UE所要接入的至少一个候选波束的切换请求；其中，所述候选波束为所述目标小区发出的波束中的一个；
    基于所述至少一个候选波束进行选取得到的M个接入波束、和/或、所述基于所述至少一个候选波束确定目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数；
    基于所述M个接入波束和/或能够为所述UE提供的接入波束的最大数量X生成切换命令，发送所述切换命令至所述UE。
  14. 根据权利要求13所述的方法，其中，所述基于所述M个接入波束和/或能够为所述UE提供的接入波束的最大数量X生成切换命令，还包括：
    当基于所述M个接入波束生成切换命令时，基于选取得到的M个接入波束生成位图，将生成的位图添加至所述切换命令中；
    或者，
    当基于所述M个接入波束生成切换命令时，基于所述M个接入波束波束序号生成切换命令。
  15. 一种切换方法，应用于源小区，所述方法包括：
    接收到UE的目标小区发来的切换命令；
    将所述切换命令发送至所述UE；
    其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
  16. 根据权利要求15所述的方法，其中，所述方法还包括：
    接收到处于自身服务的UE发来的包括有至少一个候选波束的上报信息；基于所述上报信息生成切换请求，将所述切换请求发送至所述UE的目标小区，接收到所述目标小区反馈的切换命令，发送所述切换命令至所述UE。
  17. 根据权利要求16所述的方法，其中，所述接收到处于自身服务的UE发来的包括有至少一个候选波束的上报信息之前，所述方法还包括：
    向所述UE发送测量配置信息，其中，所述测量配置信息中至少包括有需要上报的候选波束的数量N，或者，所述测量配置信息中至少包括有需要上报的候选波束的质量门限值、以及需要上报的候选波束的数量N；N 为大于等于M的整数。
  18. 一种UE，所述UE包括：
    第一通信单元，配置为源小区发来的针对所述UE的目标小区的切换命令，其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
  19. 根据权利要求18所述的UE，其中，所述UE还包括：
    第二通信单元，配置为基于所述切换命令，向至少一个接入波束向所述目标小区发起随机接入消息。
  20. 根据权利要求19所述的UE，其中，所述第二通信单元，配置为接收到目标小区在至少一个接入波束反馈的随机接入响应消息。
  21. 根据权利要求20所述的UE，其中，所述UE还包括：
    测量单元，配置为对目标小区发出的波束进行信号质量测量得到针对波束的质量测量结果；
    波束选取单元，配置为基于针对波束的质量测量结果选取得到至少一个候选波束，基于所述至少一个候选波束生成上报信息，发送所述上报信息至源小区。
  22. 根据权利要求20所述UE，其中，
    所述第二通信单元，配置为基于所述切换命令中指示的所述M个接入波束、和/或所述切换命令中指示的所述接入波束的最大数量X，发起随机接入。
  23. 根据权利要求19所述的UE，其中，所述第二通信单元，配置为当所述切换命令中指示有接入波束的最大数量X时，所述UE从自身测量测到的目标小区的波束中选取小于等于X个波束作为接入波束，以在所述接入波束中发起随机接入；
    当所述切换命令中指示有M个接入波束、且目标小区所管理的目标小区中的信号质量为收发一致时，所述UE基于所述切换命令中指示的所述M个接入波束发起随机接入；
    当所述切换命令中指示有M个接入波束、且所述目标小区管理的目标小区中的信号质量为收发不一致时，所述UE从自身测量测到的目标小区的波束中选取至少一个波束作为随机接入波束，以在所述随机接入波束中发起随机接入。
  24. 一种UE，所述UE包括：
    第一通信接口，配置为源小区发来的针对所述UE的目标小区的切换命令，其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
  25. 根据权利要求24所述的UE，其中，所述UE还包括：
    第一处理器，配置为对目标小区发出的波束进行信号质量测量得到针对波束的质量测量结果；基于针对波束的质量测量结果选取得到至少一个候选波束，基于所述至少一个候选波束生成上报信息，发送所述上报信息至源小区。
  26. 一种第一基站，所述第一基站包括：
    信息发送单元，配置为向UE所在的源小区发送切换命令；
    其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
  27. 根据权利要求26所述的第一基站，其中，所述第一基站还包括：
    信息接收单元，配置为接收到所述UE从至少一个接入波束发来的随机接入消息；
    相应的，所述信息发送单元，配置为从所述至少一个接入波束中选取一个或多个接入波束向所述UE发送随机接入响应消息。
  28. 根据权利要求27所述的第一基站，其中，所述第一基站还包括：
    波束配置单元，配置为基于所述至少一个候选波束进行选取得到的M个接入波束、和/或、所述基于所述至少一个候选波束确定目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数；
    所述信息接收单元，配置为接收到UE的源小区发来的包含有所述UE所要接入的至少一个候选波束的切换请求；其中，所述候选波束为所述UE所要接入的目标小区发出的波束中的一个；所述目标小区为第一基站管理的小区。
  29. 根据权利要求27所述的第一基站，其中，所述信息发送单元，配置为当基于所述M个接入波束生成切换命令时，基于选取得到的M个接入波束生成位图，将生成的位图添加至所述切换命令中；
    或者，
    当基于所述M个接入波束生成切换命令时，基于所述M个接入波束波束序号生成切换命令。
  30. 一种第一基站，所述第一基站包括：
    第二通信接口，配置为向UE所在的源小区发送切换命令；
    其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
  31. 根据权利要求30所述的第一基站，其中，所述第一基站还包括：
    第二处理器，配置为基于所述至少一个候选波束进行选取得到的M个接入波束、和/或、所述基于所述至少一个候选波束确定目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数；接收到UE的源小区发 来的包含有所述UE所要接入的至少一个候选波束的切换请求；其中，所述候选波束为所述UE所要接入的目标小区发出的波束中的一个；所述目标小区为第一基站管理的小区。
  32. 一种第二基站，所述第二基站包括：
    第三通信单元，配置为将切换命令发送至UE；
    第四通信单元，配置为收到UE的目标小区发来的切换命令；其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
  33. 根据权利要求32所述的第二基站，其中，
    第三通信单元，配置为接收到处于自身服务的UE发来的包括有至少一个候选波束的上报信息，发送所述切换命令至所述UE；
    第四通信单元，配置为基于所述上报信息生成切换请求，将所述切换请求发送至所述UE的目标小区，接收到所述目标小区反馈的切换命令。
  34. 根据权利要求33所述的第二基站，其中，
    所述第三通信单元，配置为接收到处于自身管理的源小区中的UE发来的包括有至少一个候选波束的上报信息；其中，所述候选波束为所述UE所要接入的目标小区发出的波束；
    第四通信单元，配置为基于所述上报信息生成切换请求，将所述切换请求发送至所述第一基站，并接收到所述第一基站反馈的切换命令。
  35. 一种第二基站，所述第二基站包括：
    第三通信接口，将切换命令发送至UE；收到UE的目标小区发来的切换命令；其中，所述切换命令中包括有所述目标小区指示的M个接入波束的信息、和/或、所述目标小区能够为所述UE提供的接入波束的最大数量X；M和X均为整数。
  36. 一种通信装置，包括：处理器和用于存储能够在处理器上运行的 计算机程序的存储器，
    其中，所述处理器用于运行所述计算机程序时，执行权利要求1-17任一项所述方法的步骤。
  37. 一种存储介质，所述存储介质存储有计算机可执行指令，所述计算机可执行指令被执行时实现权利要求1-17任一项所述的方法步骤。
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