WO2018137652A1

WO2018137652A1 - Switching method, user equipment, base station, communication device, and data storage medium

Info

Publication number: WO2018137652A1
Application number: PCT/CN2018/073978
Authority: WO
Inventors: 谢芳; 陈宁宇; 张晓然; 徐晓东; 刘光毅
Original assignee: 中国移动通信有限公司研究院; 中国移动通信集团有限公司
Priority date: 2017-01-24
Filing date: 2018-01-24
Publication date: 2018-08-02
Also published as: CN108347749A; CN108347749B

Abstract

The invention discloses a switching method, user equipment (UE), a base station, a communication device, and a data storage medium. The method comprises: receiving a switching command transmitted from a source cell and with respect to a target cell of UE; wherein the switching command comprises M access beams selected by the target cell on the basis of at least one candidate beam, and/or a maximum count X of the access beams provided by the target cell for the UE; and both M and X are integers.

Description

Switching method, user equipment, base station, communication device and storage medium

Cross-reference to related applications

The present application is based on a Chinese patent application filed on Jan. 24, 2017, the filing date of which is hereby incorporated by reference.

Technical field

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.

Background technique

At the R2 #96 meeting of 2016.11, 3GPP has clearly adopted the handover procedure of LTE as the base line for handover between 5G cells. For 5G systems, because it may work in the high frequency range of 6-100 GHz, multiple beams need to be relied upon to ensure coverage of common control channels and even data channels. The 5G NR cell may generate multiple beams to transmit Mobility Reference Signal (MRS) to support UE mobility management.

When the UE performs the downlink measurement, 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.

In the process of multi-beam handover, 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.

Summary of the invention

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.

To achieve the above objective, the present invention provides a handover method, which is applied to a UE, and includes:

Receiving a handover command sent by the source cell for the target cell of the UE;

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:

Sending a handover command to the source cell where the UE is located;

The embodiment of the invention provides a handover method, which is applied to a source cell, and the method includes:

Receiving a handover command sent by a target cell of the UE;

Transmitting the handover command to the UE;

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 second communication interface is configured to send a handover command to the source cell where the UE is located;

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.

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,

Wherein the 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. When 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. In this way, 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.

DRAWINGS

1 is a schematic flowchart 1 of a handover method according to an embodiment of the present invention;

2 is a schematic flowchart 2 of a handover method according to an embodiment of the present invention;

3 is a schematic flowchart 3 of a handover method according to an embodiment of the present invention;

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;

6 is a schematic structural diagram 1 of a user equipment according to an embodiment of the present invention;

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;

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.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Embodiment 1

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.

The method further includes:

And generating, according to the handover command, a random access message to the target cell to the at least one access beam;

Receiving a random access response message sent by the target cell for the random access message;

Determining a target access beam based on the random access response message, and performing data transmission with the target cell.

Specifically, the method applied to the UE side provided by this embodiment, as shown in FIG. 1 , 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.

It should be noted that 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.

In addition, in the method of performing quality measurement on the beam of the target cell in the above step 101, 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.

Correspondingly, 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.

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;

When the UE determines the preset rule, 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 following is a description of the configuration of the UE by the second base station. The specific scenarios are as follows:

scene one,

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.

Correspondingly, in the above scenario, in the foregoing step 102, the selecting at least one candidate beam based on the quality measurement result for the beam further includes:

Based on the number N of candidate beams that need to be reported in the measurement configuration information, N candidate beams are selected from the measured beams.

Specifically, 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. Among the beams, 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.

Scene 2,

Before performing the signal quality measurement on the beam sent by the target cell to obtain the quality measurement result for the beam, the method further includes:

Receiving 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 N of candidate beams that need to be reported; N is an integer greater than or equal to M 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.

Correspondingly, the selecting at least one candidate beam based on the quality measurement result for the beam further includes:

And selecting, based on the quality threshold value in the measurement configuration information, L beams from which the signal quality exceeds the quality threshold; L is an integer;

When L is smaller 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.

Among them, 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.

Further, 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;

For the manner that the handover command directly indicates the M access beams, the UE side can obtain and parse the content in the handover command, specifically:

After the receiving the handover command, the method further includes:

Determining, by 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;

or,

Determining, by the beam sequence number included in the handover command, the M access beams selected by the first base station based on the at least one candidate beam.

That is to say, 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.

Alternatively, 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.

Finally, in 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 :

When the maximum number X of access beams is indicated in the handover command, 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;

When the M access indicators are indicated in the handover command, and the signal quality in the target cell is consistent, the UE initiates random access based on the M access beams indicated in the handover command; That is to say, random access can be initiated in all of the M access beams; in particular, if the target cell has informed the UE of available M (M>=1) beam identifiers and TX/RX correspondence, then the UE uses the target. The M beams indicated by the cell initiate a random access procedure;

When the M access indicators are indicated in the handover command, and the signal quality in the target cell is inconsistent, 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; it should be understood that 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. For example, if the target cell has informed the UE of the available M (M>=1) beam identifiers and does not satisfy the TX/RX correspondence, then 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.

It should be noted that, after the foregoing step 104 is completed, 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. Among them, 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.

It can be seen that, by adopting the foregoing solution, 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. In this way, 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.

Embodiment 2

The embodiment of the present invention provides a handover method, which is applied to a target cell, where the method includes:

Sending a handover command to the 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 method further includes:

Receiving a random access message sent by the UE from at least one access beam;

Selecting one or more access beams from the at least one access beam to send a random access response message to the UE;

Data transmission with the UE through the target access beam.

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.

In addition, 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.

Further, 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;

For the handover command, 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:

When generating a handover command based on the M access beams, the generated bitmap is added to the handover command based on the selected M access beam generation bitmaps;

or,

When 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 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:

Receiving a handover request sent by the second base station that manages the source cell where the UE is currently located, and extracting, from the handover request, the report information of the at least one candidate beam that includes the target cell;

Correspondingly, 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.

That is, 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.

It should be noted that, after the foregoing step 203 is completed, 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. Among them, 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.

Embodiment 3

This embodiment provides a handover method, which is applied to a source cell, where the method includes:

Receiving a handover command sent by a target cell of the UE;

Transmitting the handover command to the UE;

The method further includes:

Receiving, by the UE in the self service, 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. One of the beams sent by the target cell 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;

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 following is a description of the configuration of the UE by the second base station. 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:

Sending 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 a quality threshold of the candidate beam that needs 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.

4, FIG. 5 and the foregoing three embodiments, the following provides a detailed description of the overall processing scenario. In FIG. 4, it can be seen that 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. Specifically, 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. ～8, the UE can determine the beam quality by detecting the MRS in the beam. Further, a detailed process description will be made in conjunction with FIG. 5:

0. 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).

1. 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;

If 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;

If the quality threshold is not configured, 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 quality information corresponding to the beam to be reported above.

2. 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.

3. 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 number M of the beams scheduled for the UE, that is, after the UE accesses the target cell, the M beams are used to communicate with the target cell;

The identifier of the beam that is scheduled for the UE, the identifier 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;

In particular, 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.

4. 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.

Embodiment 4

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 incoming 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 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;

And 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.

In addition, 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.

Correspondingly, 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;

scene one,

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;

Correspondingly, 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.

Scene 2,

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; N is an integer greater than or equal to M;

Correspondingly, 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.

Further, 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 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;

or,

Finally, the second communication unit is specifically used for

When the maximum number X of access beams is indicated in the handover command, 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;

When the M access indicators are indicated in the handover command, and the signal quality in the target cell is consistent, the UE initiates random access based on the M access beams indicated in the handover command.

When the M access indicators are indicated in the handover command, and the signal quality in the target cell is inconsistent, 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.

It should be further noted that 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. Among them, 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.

In addition, on the basis of this embodiment, another UE may be further configured. As shown in FIG. 7, the UE includes:

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.

Embodiment 5

An information sending unit, configured to send a handover command to a source cell where the UE is located;

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;

Correspondingly, 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.

In this embodiment, 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 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;

or,

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. ;

Correspondingly, 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.

It should be further noted that 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;

In addition, on the basis of this embodiment, another structure of the first base station may be provided, as shown in FIG. 9, including:

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 One of the beams sent by the inbound target cell; the target cell is a cell managed by the first base station.

Embodiment 6

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 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 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.

It is to be understood that 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.

In some embodiments, the memory stores the following elements, executable modules or data structures, or a subset thereof, or their extension set:

Operating system and applications.

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.

It is to be understood that the term "comprises", "comprising", or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes those elements. It also includes other elements that are not explicitly listed, or elements that are inherent to such a process, method, article, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that 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.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims

A handover method is applied to a user equipment UE, and the method includes:

Receiving a handover command sent by the source cell for the target cell of the UE;

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 of claim 1 wherein the method further comprises:

And generating, according to the handover command, a random access message to the target cell by using at least one access beam.
The method of claim 1 wherein the method further comprises:

Receiving a random access response message that the target cell feeds back in at least one access beam.
The method of any of claims 1-3, wherein the method further comprises:

Performing signal quality measurement on the beam emitted by the target cell to obtain a quality measurement result for the beam;

And obtaining at least one candidate beam based on the quality measurement result for the beam, and generating the report information based on the at least one candidate beam to send the report information to the source cell.
The method of claim 4, wherein the initiating a random access message to the target cell to the at least one access beam based on the handover command comprises:

Random access is initiated based on the M access beams indicated in the handover command and/or the maximum number X of access beams indicated in the handover command.
The method according to claim 4, wherein before the 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:

Receiving 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;

Correspondingly, the selecting at least one candidate beam based on the quality measurement result for the beam further includes:

Based on the number N of candidate beams that need to be reported in the measurement configuration information, N candidate beams are selected from the measured beams.
The method according to claim 4, wherein before the 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:

Receiving 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 N of candidate beams that need to be reported; N is an integer greater than or equal to M ;

Correspondingly, the selecting at least one candidate beam based on the quality measurement result for the beam further includes:

And selecting, based on the quality threshold value in the measurement configuration information, L beams from which the signal quality exceeds the quality threshold; L is an integer;

When L is smaller 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 of claim 1, wherein after the receiving the handover command sent by the target cell, the method further comprises:

Determining, from the bitmap included in the handover command, M access beams selected by the target cell based on the at least one candidate beam;

or,

Determining, by the beam sequence number included in the handover command, the M access beams selected by the target cell based on the at least one candidate beam.
The method according to any of claims 1 to 4, wherein the maximum number of the access beams indicated in the M access beams indicated in the handover command and/or the handover command is X, initiate random access, including:

When the maximum number X of access beams is indicated in the handover command, 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;

When the M access indicators are indicated in the handover command, and the signal quality in the target cell is consistent, the UE initiates random access based on the M access beams indicated in the handover command.

When the M access indicators are indicated in the handover command, and the signal quality in the target cell is inconsistent, 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.
A handover method is applied to a target cell, and the method includes:

Sending 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 method of claim 10, wherein the method further comprises:

Receiving a random access message sent by the UE from at least one access beam.
The method of claim 11 wherein the method further comprises:

Selecting one or more access beams from the at least one access beam to send a random access response message to the UE.
The method of claim 12, wherein the method further comprises:

Receiving, by the source cell of the UE, a handover request that includes at least one candidate beam that the UE is to access; wherein the candidate beam is one of the beams sent by the target cell;

M access beams selected based on the at least one candidate beam, and/or the maximum number of access beams that the target cell can provide for the UE based on the at least one candidate beam; X is an integer;

Generating 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 transmitting the handover command to the UE.
The method according to claim 13, wherein the generating a handover command based on the M access beams and/or the maximum number X of access beams that can be provided for the UE, further includes:

When generating a handover command based on the M access beams, the generated bitmap is added to the handover command based on the selected M access beam generation bitmaps;

or,

When a handover command is generated based on the M access beams, a handover command is generated based on the M access beam beam sequences.
A handover method is applied to a source cell, and the method includes:

Receiving a handover command sent by a target cell of the UE;

Transmitting the handover command to the UE;

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 of claim 15 wherein the method further comprises:

Receiving, by the UE in the self service, 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 method according to claim 16, wherein the method further comprises: before receiving the reporting information including the at least one candidate beam sent by the UE that is in its own service, the method further comprising:

Sending 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 a quality threshold of the candidate beam that needs to be reported. And the number of candidate beams that need to be reported N; N is an integer greater than or equal to M.
A UE, the UE includes:

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.
The UE of claim 18, wherein the UE further comprises:

The second communication unit is configured to initiate a random access message to the target cell to the at least one access beam based on the handover command.
The UE according to claim 19, wherein the second communication unit is configured to receive a random access response message that the target cell feeds back in at least one access beam.
The UE of claim 20, wherein the UE further comprises:

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;

The beam selecting unit 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.
The UE according to claim 20, wherein

The second communication unit 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 UE according to claim 19, wherein the second communication unit is configured to: when the maximum number X of access beams is indicated in the handover command, the UE measures the measured beam of the target cell from itself Selecting less than or equal to X beams as an access beam to initiate random access in the access beam;

When the M access indicators are indicated in the handover command, and the signal quality in the target cell managed by the target cell is consistent, the UE is initiated based on the M access beams indicated in the handover command. Random access

The UE selects at least one beam from the beam of the target cell measured by the self-measurement, when the M-signet is indicated in the handover command, and the signal quality in the target cell managed by the target cell is inconsistent. As a random access beam, random access is initiated in the random access beam.
A UE, 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 of claim 24, wherein the UE further comprises:

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.
A first base station, 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.
The first base station according to claim 26, wherein the first base station further comprises:

An information receiving unit, configured to receive a random access message sent by the UE from at least one access beam;

Correspondingly, 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.
The first base station according to claim 27, wherein the first base station further comprises:

a beam configuration unit, 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;

The information receiving unit is configured to receive a handover request that is sent by the source cell of the UE, where the at least one candidate beam is to be accessed by the UE, 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 according to claim 27, wherein the information transmitting unit is configured to generate a bitmap based on the selected M access beams when the handover command is generated based on the M access beams, and generate a bitmap is added to the switching command;

or,

When a handover command is generated based on the M access beams, a handover command is generated based on the M access beam beam sequences.
A first base station, 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.
The first base station according to claim 30, wherein the first base station further comprises:

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 One of the beams sent by the inbound target cell; the target cell is a cell managed by the first base station.
A second base station, 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.
A second base station according to claim 32, wherein

a third communication unit, configured to receive the report information including the at least one candidate beam sent by the UE that is in its own service, and send the handover command to the UE;

The fourth communication unit is configured to generate a handover request based on the report information, send the handover request to a target cell of the UE, and receive a handover command fed back by the target cell.
A second base station according to claim 33, wherein

The third communication unit is configured to receive, by the UE in the source cell that is managed by itself, the report information that includes the at least one candidate beam, where the candidate beam is sent by the target cell to which the UE is to be accessed. Beam

The fourth communication unit is configured to 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.
A second base station, 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.
A communication device comprising: a processor and a memory for storing a computer program executable on the processor,

Wherein the processor is operative to perform the steps of the method of any one of claims 1-17 when the computer program is run.
A storage medium storing computer executable instructions that, when executed, implement the method steps of any of claims 1-17.