CN113453294A

CN113453294A - Cell switching method, equipment and system

Info

Publication number: CN113453294A
Application number: CN202010232108.9A
Authority: CN
Inventors: 刘选兵; 鲍炜; 陈力
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2021-09-28

Abstract

The embodiment of the invention provides a cell switching method, equipment and a system, relates to the technical field of communication, and aims to solve the problem that the UE is dropped or a wireless link fails due to the deviation of the cell selected and switched by the existing UE. The method comprises the following steps: receiving first information sent by network equipment, wherein the first information is used for indicating M candidate cells and the cell type of each candidate cell, and the cell type is a high-speed cell or a non-high-speed cell; determining a target cell from the M candidate cells according to the moving state of the UE and the first information, wherein the target cell is a cell matched with the moving state of the UE; and switching to the target cell, wherein M is a positive integer. The method is applied to a scene of switching cells.

Description

Cell switching method, equipment and system

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a cell switching method, device and system.

Background

In order to ensure the network service quality of User Equipment (UE), when the UE is in a high-speed mobile state, the UE resides in a high-speed dedicated network (HSDN) or a high-speed cell; when the UE is in a non-high speed moving state, the UE resides in a public network (public network).

Generally, when the mobility state of the UE changes, the UE may perform handover of a serving cell according to a Conditional Handover (CHO) command sent by the network device. For example, in order to ensure the network service quality of the UE in the high-speed moving state, when the UE enters the high-speed moving state, the UE may evaluate a plurality of candidate cells indicated by the conditional handover command, thereby determining a high-speed cell, and handover to the high-speed cell.

However, in the above method, since the cell to which the UE is handed over is evaluated and determined by the UE, the handed-over cell may have a deviation, for example, the high-speed cell determined by the UE may be a non-high-speed cell, so that the UE may be handed over to the non-high-speed cell in a high-speed moving state, thereby causing a call drop or a radio link failure of the UE.

Disclosure of Invention

The embodiment of the invention provides a cell switching method, equipment and a system, which are used for solving the problem that the UE is dropped or a wireless link fails due to the deviation of the cell selected and switched by the existing UE.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present invention provides a cell handover method, where the method may be applied to a UE, and the method includes: receiving first information sent by network equipment, wherein the first information is used for indicating M candidate cells and the cell type of each candidate cell, and the cell type is a high-speed cell or a non-high-speed cell; determining a target cell from the M candidate cells according to the moving state of the UE and the first information, wherein the target cell is a cell matched with the moving state of the UE; and switching to the target cell, wherein M is a positive integer.

In a second aspect, an embodiment of the present invention provides a cell handover method, where the method may be applied to a network device, and the method includes: and sending first information to the UE, wherein the first information is used for indicating M candidate cells and the cell type of each candidate cell, the cell type is a high-speed cell or a non-high-speed cell, and M is a positive integer.

In a third aspect, an embodiment of the present invention provides a UE, where the UE includes a receiving module, a determining module, and a switching module. A receiving module, configured to receive first information sent by a network device, where the first information is used to indicate M candidate cells and a cell type of each candidate cell, and the cell type is a high-speed cell or a non-high-speed cell; a determining module, configured to determine a target cell from the M candidate cells according to the mobile state of the UE and the first information received by the receiving module, where the target cell is a cell matched with the mobile state of the UE; and the switching module is used for switching to the target cell determined by the determining module, and M is a positive integer.

In a fourth aspect, an embodiment of the present invention provides a network device, where the network device sends a unit. A sending unit, configured to send first information to a user equipment UE, where the first information is used to indicate M candidate cells and a cell type of each candidate cell, where the cell type is a high-speed cell or a non-high-speed cell, and M is a positive integer.

In a fifth aspect, an embodiment of the present invention provides a UE, including a processor, a memory, and a computer program stored in the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the cell handover method provided in the first aspect.

In a sixth aspect, an embodiment of the present invention provides a network device, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the cell handover method provided in the second aspect.

In a seventh aspect, an embodiment of the present invention provides a communication system, where the communication system includes the UE in the third aspect and the network device in the fourth aspect. Alternatively, the communication system includes the UE in the fifth aspect and the network device in the sixth aspect.

In an eighth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements the steps of the cell handover method in the first aspect or the second aspect.

In the embodiment of the present invention, the UE may receive first information sent by the network device, where the first information is used to indicate M candidate cells and a cell type of each candidate cell, where the cell type is a high-speed cell or a non-high-speed cell; determining a target cell from the M candidate cells according to the moving state of the UE and the first information, wherein the target cell is a cell matched with the moving state of the UE; and switching to the target cell, wherein M is a positive integer. Through the scheme, since the first information can be used for indicating the M candidate cells and the cell type of each candidate cell in the M candidate cells, when the UE performs cell handover (for example, when the mobility state of the UE changes, etc.), the UE can accurately determine a cell (i.e., a target cell) matching the mobility state of the UE from the M candidate cells according to the mobility state of the UE and the received first information, so that the UE can accurately handover to a cell matching the mobility state of the UE, for example, when the mobility state of the UE is a high-speed mobility state, the UE can accurately handover to a high-speed cell, thereby ensuring the communication quality of the UE and avoiding a call drop or a radio link failure of the UE.

Drawings

Fig. 1 is a schematic flow chart of a conditional switch according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a communication system according to an embodiment of the present invention;

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

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

fig. 5 is a schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 6 is a hardware diagram of a UE according to an embodiment of the present invention;

fig. 7 is a hardware schematic diagram of a network device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The term "and/or" herein is an association relationship describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The symbol "/" herein denotes a relationship in which the associated object is or, for example, a/B denotes a or B.

The terms "first" and "second," and the like, in the description and in the claims of the present invention are used for distinguishing between different objects and not for describing a particular order of the objects. For example, the first information, the second information, and the like are for distinguishing different information, not for describing a specific order of information.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the description of the embodiments of the present invention, unless otherwise specified, "a plurality" means two or more, for example, a plurality of elements means two or more elements, and the like.

The following first gives an exemplary description of terms/nouns to which embodiments of the present invention relate.

HSDN (high speed private network): refers to a network deployed along a road (e.g., along a railway, etc.) in order to ensure the network service quality of UEs on a vehicle (e.g., a high-speed rail, etc.) with a high moving speed (e.g., a high moving speed level).

A high-speed moving state: the mobility state is a mobility state in which the UE mobility speed is greater than or equal to a certain threshold (e.g., a threshold agreed by a protocol or a threshold indicated by a network device). For example, a UE is in a High Speed Train (HST) mobile state.

Non-high-speed moving state: refers to a moving state in which the UE moving speed is less than a certain threshold (e.g., a threshold agreed by a protocol or a threshold configured or indicated by a network device).

CHO (conditional switching): the method refers to a conditional handover procedure introduced to avoid a failure of cell handover of the UE due to the fact that the UE cannot receive a handover command related message of a source node after a channel condition of the UE in a source cell is degraded.

The following describes an exemplary flow of condition switching with reference to fig. 1.

As shown in fig. 1, the main steps of the conditional switching process are as follows:

step 1: the source node sends handover request information (HO request) to one or more target nodes.

Step 2: the target node feeds back handover acknowledgement information (HO request ACK) to the source node.

And step 3: the source node sends configuration information (with resource reservation) for conditional handover to the UE.

And 4, step 4: the UE evaluates whether the candidate cells (i.e., nodes) satisfy the condition, and selects a target cell (i.e., a target node) for handover after satisfying the condition (evaluation of the condition for the candidate cells and select one target for handover).

And 5: the UE initiates a random access procedure (content free or RACH-less access or content based RACH) in the selected target cell.

Step 6: the UE sends handover complete information (HO complete) to the target node.

And 7: the source node sends a cancel conditional handover command (conditional HO cancel) to other target nodes.

And 8: the other target nodes send a conditional handover cancellation confirmation command (conditional HO cancellation confirmation) to the source node.

The embodiment of the invention provides a cell switching method, equipment and a system.A UE (user equipment) can receive first information sent by network equipment, wherein the first information is used for indicating M candidate cells and the cell type of each candidate cell, and the cell type is a high-speed cell or a non-high-speed cell; determining a target cell from the M candidate cells according to the moving state of the UE and the first information, wherein the target cell is a cell matched with the moving state of the UE; and switching to the target cell, wherein M is a positive integer. Through the scheme, since the first information can be used for indicating the M candidate cells and the cell type of each candidate cell in the M candidate cells, when the UE performs cell handover (for example, when the mobility state of the UE changes, etc.), the UE can accurately determine a cell (i.e., a target cell) matching the mobility state of the UE from the M candidate cells according to the mobility state of the UE and the received first information, so that the UE can accurately handover to a cell matching the mobility state of the UE, for example, when the mobility state of the UE is a high-speed mobility state, the UE can accurately handover to a high-speed cell, thereby ensuring the communication quality of the UE and avoiding a call drop or a radio link failure of the UE.

The cell switching method provided by the embodiment of the invention can be applied to a communication system. The communication system may be a wireless communication system, which may include a network device and a UE. Fig. 2 is a schematic diagram of a wireless communication system according to an embodiment of the present invention. In fig. 2, the wireless communication system may include a network apparatus 01 and a UE 02. Wherein, the network device 01 and the UE 02 can establish a connection. It is understood that a wireless connection may be between network device 01 and UE 02.

Optionally, in this embodiment of the present invention, the UE is a device providing voice and/or data connectivity to a user, a handheld device having a wired/wireless connection function, or another processing device connected to a wireless modem. A UE may communicate with one or more core network devices via a Radio Access Network (RAN). The UE may be a mobile terminal such as a mobile phone (or "cellular" phone) and a computer having a mobile terminal, or a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device that exchanges speech and/or data with the RAN, such as a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and so on. The UE may also be referred to as a user agent (user agent) or UE, etc.

In the embodiment of the present invention, the network device is a device deployed in the RAN for providing a wireless communication function for the UE. In the embodiment of the present invention, the network device may be a base station, and the base station may include various macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, the names of devices that function as base stations may differ. For example, in a 5G system, it may be referred to as a 5G base station (gNB); in fourth Generation wireless communication (4-Generation, 4G) systems, such as Long Term Evolution (LTE) systems, may be referred to as evolved Node bs (enbs); in a third generation mobile communication (3G) system, it may be referred to as a base station (Node B) or the like. As communication technology evolves, the name "base station" may change.

In the embodiment of the present invention, when the UE is in a connected state, the UE may receive measurement configuration information sent by the network device, and then the UE may perform measurement according to the measurement configuration information and send a measurement report to the network device. After the network device receives the measurement report, the network device may send information (e.g., the first information in the embodiment of the present invention) to the UE according to the measurement report to indicate the at least one candidate cell and the cell type of each candidate cell in the at least one candidate cell to the UE. In this way, when the UE performs cell handover, the UE may determine a cell matching the mobility state of the UE from the at least one candidate cell according to the mobility state of the UE and the information, and handover to the cell, so that the communication quality of the UE may be ensured. For example, when the mobility state of the UE is a high-speed mobility state, the UE may be handed over to a high-speed cell, so that a call drop or a radio link failure of the UE may be avoided.

It should be noted that, in the embodiment of the present invention, the cell matched with the moving state of the UE may be specifically determined according to the moving state of the UE. For example, when the moving state of the UE is a high speed moving state, the cell matching the moving state of the UE may be a high speed cell; when the moving state of the UE is the non-high speed moving state, the cell matching the moving state of the UE may be a non-high speed cell, and so on.

The following describes an exemplary cell handover method according to an embodiment of the present invention with reference to the drawings.

As shown in fig. 3, an embodiment of the present invention provides a cell handover method, which may be applied to the wireless communication system shown in fig. 2, and the method may include the following S201-S204.

S201, the network equipment sends first information to the UE.

The first information may be used to indicate M candidate cells and a cell type of each candidate cell in the M candidate cells, where the cell type may be a high speed cell or a non-high speed cell, and M is a positive integer.

S202, the UE receives first information sent by the network equipment.

In this embodiment of the present invention, the network device may send the first information to the UE, so as to indicate the M candidate cells and the cell type of each candidate cell to the UE. As such, after the UE receives the first information, the UE may determine the M candidate cells, and the type of each candidate cell.

It should be noted that, the candidate cells mentioned in the embodiment of the present invention may be understood as: the network equipment indicates to the UE that the UE can select a cell for handover.

Optionally, in this embodiment of the present invention, the types of the first information may be multiple. When the types of the first information are different, the content included in the first information may also be different.

The following takes two possible cases (case one and case two, respectively) as an example to illustrate the first information and the content included in the first information.

The first condition is as follows: the first information is a conditional handover command, and the conditional handover command may include M cell identities and indication information corresponding to each of the M cell identities.

Each cell id may be used to indicate a candidate cell, and each indication information may be used to indicate a cell type of the candidate cell.

It is to be understood that, in the first case, the conditional handover command may include M cell identifiers and M indication information, where each cell identifier may correspond to one indication information respectively.

Optionally, in this embodiment of the present invention, one cell identifier (any one of the M cell identifiers) may be any identifier that can indicate a cell, such as a cell identifier code and a cell frequency point. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Optionally, in this embodiment of the present invention, one piece of indication information (any one of the M pieces of indication information) may be any one of the following: cell type indication information, a second System Information Block (SIB), a threshold for a speed trigger condition.

Optionally, in the embodiment of the present invention, the indication information is different, and the manner in which the conditional switch command carries the indication information may be different, that is, the configuration of the conditional switch command may be different.

In the following, taking one indication information as an example, three possible implementation manners that the indication information is cell type indication information, the indication information is a second SIB, and the indication information is a threshold of the speed trigger condition are exemplarily described.

The first implementation mode comprises the following steps: the indication information is cell type indication information.

Optionally, for the first implementation manner, the cell type indication information may be a Radio Resource Control (RRC) parameter.

Optionally, in the embodiment of the present invention, the RRC parameter may be a high speed dedicated network indication (HSDN-indication) parameter or a high speed dedicated network cell (HSDN-cell) parameter. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

In the embodiment of the present invention, when the RRC parameter is the HSDN-indication parameter, the HSDN-indication parameter may indicate whether the first cell is configured as the high speed cell, so as to indicate whether the first cell is the high speed cell (i.e., indicate the cell type of the first cell).

The first cell may be a cell indicated by a cell identifier corresponding to the indication information.

Optionally, in this embodiment of the present invention, whether the first cell is a high speed cell may be indicated by a boolean (boolean) type of the HSDN-indication parameter.

In the embodiment of the present invention, when the RRC parameter is the HSDN-cell parameter, it may directly indicate whether the first cell is a high speed cell (i.e., indicate a cell type of the first cell) through the HSDN-cell parameter.

Optionally, in this embodiment of the present invention, whether the first cell is a high speed cell may be indicated by true or false of the HSDN-cell parameter.

For example, when the HSDN-cell parameter is true, the first cell may be indicated as a high speed cell; when the HSDN-cell parameter is false, the first cell may be indicated as a non-high speed cell.

Optionally, in this embodiment of the present invention, for the first implementation manner described above (where one piece of indication information is cell type indication information), the cell type indication information may be carried in one cell of the conditional handover command or in an information segment of the one cell.

Optionally, in this embodiment of the present invention, the RRC reconfiguration message may include a conditional handover command (specifically, a conditional handover configuration), and the cell type indication information may be carried in a conditional handover configuration cell (for example, cho-config.cho-configtoaddmod.cho-RRCReconfig) or an information segment of the conditional handover configuration cell.

Optionally, when the cell type indication information is an HSDN-cell parameter, the HSDN-cell parameter may be carried in a common serving cell configuration (ServingCellConfigCommon).

Illustratively, the ServingCellConfigCommon carrying HSDN-cell parameters may be in the following format:

ServingcellConfigCommon:::::::::::::/common serving cell configuration

PhysCellId PhysCellId OPTIONAL,--Cond HOAndServCellAdd,

hsdn-Cell estimated { true, false } optimal,// high speed Cell indication

…}

Optionally, when the cell type indication information is an HSDN-indication parameter, the HSDN-indication parameter may be carried in a cho-Config cell configured for conditional handover.

For example, the cho-Config cell carrying HSDN-indication parameters may be in the following format:

CHO-ConfigToAddMod-r16:: ═ SEQUENCE {// CONDITIONAL SWITCHING CONFIGURATION ADD MODIFICATION

cho-ConfigId-r16 CHO-ConfigId-r16,

cho-ExecutionCond-r16 SEQUENCE(SIZE(1..2))OF MeasId,

cho-RRCReconfig-r16 OCTET STRING(CONTAINING RRCReconfiguration),

hsdn-Indication BOOLEAN OPTIONAL,// high speed cell Indication

...}

It should be noted that, for the first implementation manner (the indication information is cell type indication information), the indication information may also be carried in the conditional handover command in any other possible manner, which may be determined specifically according to actual usage requirements, and the embodiment of the present invention is not limited.

The second implementation mode comprises the following steps: the indication information is a second SIB.

Optionally, in this embodiment of the present invention, the second SIB may be the SIB1 of the first cell (the cell indicated by the cell identifier corresponding to the indication information).

Wherein, whether the first cell is a high speed cell, i.e. indicating the cell type of the first cell, may be indicated in SIB 1.

Optionally, in this embodiment of the present invention, when the second SIB is SIB1, SIB1 may be a special SIB 1-transfer (truncated SIB1-delivery)

Optionally, in this embodiment of the present invention, the RRC reconfiguration message may include a conditional handover command (specifically, a conditional handover configuration), and the second SIB may carry, in a conditional handover configuration information element (for example, cho-config.cho-configtoaddmod.cho-RRCReconfig), SIB1 information of the first cell.

It should be noted that, for the second implementation manner (the indication information is the second SIB), the indication information may also be carried in the conditional handover command in any other possible manner, which may be determined specifically according to actual usage requirements, and the embodiment of the present invention is not limited.

The third implementation mode comprises the following steps: the indication information is a threshold of the speed trigger condition.

It should be noted that, in the embodiment of the present invention, when the moving speed of the UE satisfies the threshold of the speed trigger condition, the UE may switch to the first cell (the cell indicated by the cell identifier corresponding to the indication information).

The threshold at which the moving speed of the UE satisfies the speed triggering condition may be: the moving speed of the UE is greater than or equal to the threshold of the speed trigger condition, or the moving speed of the UE is less than the threshold of the speed trigger condition. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Optionally, in this embodiment of the present invention, a high-speed execution condition may be configured in the conditional switch command, where the high-speed execution condition may include a threshold of the speed trigger condition.

It is to be understood that the high-speed execution condition may be a trigger configuration of the condition switching.

Specifically, for the first cell, the conditional handover execution condition (CHO-execution cond) of the first cell may include a threshold of the speed trigger condition.

For example, the high-speed execution condition may be the following format:

CHO-TriggerConfig-r16: ═ SEQUENCE {// conditional switch trigger configuration

cho-event Id CHOICE{

...

cho-eventhSpeed SEQUENCE {// conditional switch high speed event

HighSpeed-Threshold MeasTriggerQuantity,// high speed Threshold

hystersis,// lag time

TimeToTrigger// time to trigger

},...}...,}

It should be noted that, for the third implementation manner (where the indication information is a threshold of the speed trigger condition), the indication information may also be carried in the conditional switch command in any other possible manner, which may be determined specifically according to actual usage requirements, and the embodiment of the present invention is not limited thereto.

Case two: the first information is an RRC reconfiguration message, which may include first SIBs.

The first SIB may be configured to indicate cell types of the M candidate cells.

Optionally, in the second case, the RRC reconfiguration message may carry other system messages (decrypted system information delivery), where the other system messages may include the first SIB.

It should be noted that the first SIB may also be carried in the RRC reconfiguration message in any other possible manner, which may be determined specifically according to actual usage requirements, and the embodiment of the present invention is not limited.

Optionally, in this embodiment of the present invention, the first SIB may be at least one of the following: SIB3, SIB4, SIB 5. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Wherein, SIB3, SIB4, and SIB5 may all be used to indicate a cell type (high speed cell or non-high speed cell) of a neighbor cell of a current serving cell of the UE.

That is, in the second case, the M candidate cells may be neighbor cells of a current serving cell of the UE.

S203, the UE determines a target cell from the M candidate cells according to the moving state of the UE and the first information.

The target cell may be a cell matched with a moving state of the UE.

S204, the UE is switched to the target cell.

In the embodiment of the present invention, after the UE receives the first information, the UE may determine, according to the moving state of the UE and the first information (used to indicate the M candidate cells and the cell type of each candidate cell), a cell (i.e., a target cell) matching the moving state of the UE from the M candidate cells, and switch to the target cell, so as to ensure the communication quality of the UE.

Optionally, in this embodiment of the present invention, when the first information is a conditional handover command, the UE may determine a cell (i.e., the target cell) matching the UE moving state by reading indication information corresponding to each candidate cell of the M candidate cells.

Specifically, in the embodiment of the present invention, when the indication information is cell type indication information, the UE may determine the cell type of each candidate cell in the M candidate cells by reading cell type indication information in a conditional handover configuration, so as to determine a target cell from the M candidate cells.

When the indication information is the second SIB, the UE may determine the cell type of each candidate cell of the M candidate cells by reading a system message in the conditional handover configuration, so as to determine the target cell from the M candidate cells.

When the indication information is the threshold of the speed triggering condition, the UE may determine the cell satisfying the threshold of the speed triggering condition according to the moving speed of the UE, so as to determine the target cell.

It should be noted that, in the embodiment of the present invention, for the threshold whose indication information is the speed trigger condition, after the UE determines the cell whose moving speed of the UE satisfies the threshold of the speed trigger condition, the UE may further evaluate other conditions of the cell (for example, a strength value of the cell, etc.), and if these conditions all satisfy the usage requirement of the UE, the cell may be determined as the target cell and may be handed over to the cell.

In addition, the UE may measure and estimate a moving speed of the UE according to a high speed measurement (high speed measurement) configuration issued by the network device.

Optionally, in this embodiment of the present invention, when the first information is an RRC reconfiguration message, the UE may determine the cell type of each candidate cell in the M candidate cells by reading a system message in the RRC reconfiguration message, so as to determine the target cell from the M candidate cells.

Optionally, in the embodiment of the present invention, when the moving state of the UE is different, the UE may determine the target cell in different manners.

It can be understood that the UE determines the target cell in a different manner when the moving state of the UE is the high speed moving state than when the moving state of the UE is the non-high speed moving state.

The following is an exemplary description of the manner in which the UE determines the target cell in two possible manners (manner one and manner two, respectively).

The first method is as follows: in a case where the moving state of the UE is the high speed moving state, the UE may determine N high speed cells from the M candidate cells and determine a target cell from the N high speed cells according to the first information.

Wherein N is a positive integer less than or equal to M.

In the embodiment of the present invention, in the first mode, if the moving state of the UE is a high speed moving state, the UE may determine N high speed cells from the M candidate cells according to the first information, and then determine the target cell from the N high speed cells.

In this embodiment of the present invention, the N high speed cells may be all high speed cells in the M candidate cells.

In the embodiment of the present invention, after the UE determines the N high speed cells, the UE may preferentially perform measurement and conditional handover estimation on the N high speed cells, and then determine a high speed cell (i.e., the target cell) satisfying the conditional handover from the N high speed cells, so that the UE may perform the conditional handover and handover to the high speed cell.

In the embodiment of the invention, when the moving state of the UE is the high-speed moving state, the UE resides in the high-speed cell to ensure the communication quality of the UE (avoiding the condition of call drop or radio link failure), so the UE can directly determine N high-speed cells from the M candidate cells and then determine the target cell from the N high-speed cells, thereby saving the operation resources of the UE and enabling the UE to quickly determine the target cell from the M candidate cells.

Optionally, in the embodiment of the present invention, if the moving state of the UE is a high-speed moving state and the M candidate cells are all non-high-speed cells, the UE may send a measurement report to the network device, so as to request the network device to switch to the high-speed cell, and further enable the UE to switch to the high-speed cell in the high-speed moving state.

For example, in the case that the mobility state of the UE is a high speed mobility state, the cell handover method provided in the embodiment of the present invention may further include S205 and S206 described below.

S205, the UE determines whether the M candidate cells comprise high-speed cells according to the first information.

In this embodiment of the present invention, when the mobility state of the UE is a high speed mobility state, the UE may determine whether the M candidate cells include a high speed cell according to the first information, and if the M candidate cells do not include a high speed cell (i.e., the M candidate cells are all non-high speed cells), the UE may execute the following S206 to request the network device to switch to the high speed cell; if the high speed cell is included in the M candidate cells, the UE may be handed over to the high speed cell.

S206, the UE sends a measurement report to the network equipment.

The measurement report may be used to request handover to the high speed cell.

In the embodiment of the invention, under the condition that the moving state of the UE is a high-speed moving state and the M candidate cells are all non-high-speed cells, the UE can send the measurement report to the network equipment, so that the network equipment is requested to trigger the UE to be switched to the high-speed cell, and the communication quality of the UE in the high-speed moving state can be ensured.

In the embodiment of the present invention, after the network device receives the measurement report, the network device may send a handover command to the UE to instruct the UE to handover to the high-speed cell; or the network device may send a conditional handover command to the UE, where the conditional handover command may include the high speed candidate cell. In this manner, the UE may be handed over to the high speed candidate cell.

Optionally, in this embodiment of the present invention, the measurement report may include a cell frequency point, where the cell frequency point may be a cell frequency point of a high-speed cell to which the UE requests handover.

In the embodiment of the invention, the UE can carry the cell frequency point of the high-speed cell in the measurement report, thereby clearly informing the network equipment that the UE requests to be switched to the high-speed cell.

It can be understood that the cell indicated by the cell frequency point may be a high-speed cell to which the UE is ideally handed over.

Optionally, in the embodiment of the present invention, before the UE sends the measurement report to the network device, the UE may determine the cell frequency point, and then carry the cell frequency point in the measurement report and report the cell frequency point to the network device, so that the UE may request the network device to switch to the high-speed cell corresponding to the cell frequency point.

For example, before the step S206, the cell handover method provided in the embodiment of the present invention may further include the following step S207.

And S207, the UE determines the frequency point of the cell according to the second information.

Wherein the second information may include at least one of: the frequency points of the high-speed cells indicated by the measurement configuration information, the frequency points of the non-high-speed cells indicated by the measurement configuration information and the frequency points of the M candidate cells.

In the embodiment of the present invention, when the UE determines that the M candidate cells are all non-high-speed cells, the UE may determine a possible high-speed cell frequency point, that is, determine the cell frequency point, according to the second information.

The second method comprises the following steps: when the moving state of the UE is the non-high speed moving state, the UE may preferentially determine K non-high speed cells from the M candidate cells and determine the target cell from the K non-high speed cells according to the first information.

Wherein K is a positive integer less than or equal to M.

In this embodiment of the present invention, in the second mode, if the moving state of the UE is a non-high speed moving state, the UE may preferentially determine K non-high speed cells from the M candidate cells according to the first information, and then determine a target cell from the K non-high speed cells.

In this embodiment of the present invention, the K non-high speed cells may be all non-high speed cells in the M candidate cells.

In the embodiment of the present invention, after the UE determines the K non-high speed cells, the UE may preferentially perform measurement and conditional handover estimation on the K non-high speed cells, and then determine a non-high speed cell (i.e., the target cell) satisfying the conditional handover from the K non-high speed cells, so that the UE may perform the conditional handover and switch to the non-high speed cell.

Optionally, in the embodiment of the present invention, when the moving state of the UE is a non-high-speed moving state, if all of the M candidate cells are high-speed cells, the UE may also select to switch to the high-speed cell.

Optionally, in the embodiment of the present invention, when the moving state of the UE is the non-high speed moving state, since the high speed cell may also satisfy the communication quality of the UE in the non-high speed moving state, the UE may also determine a high speed cell that satisfies the usage requirement from the M candidate cells, and switch to the high speed cell.

Embodiments of the present invention provide a cell switching method, where the first information may be used to indicate M candidate cells and a cell type of each candidate cell in the M candidate cells, so that when a UE performs cell switching (for example, a mobility state of the UE changes), the UE may accurately determine, according to the mobility state of the UE and the received first information, a cell (i.e., a target cell) matching a mobility state of the UE from the M candidate cells, so that the UE may accurately switch to a cell matching the mobility state of the UE, for example, when the mobility state of the UE is a high-speed mobility state, the UE may accurately switch to the high-speed cell, thereby ensuring communication quality of the UE and avoiding a situation where a call drop or a radio link failure occurs in the UE.

As shown in fig. 4, an embodiment of the present invention provides a UE 300, where the UE 300 includes a receiving module 301, a determining module 302, and a switching module 303. A receiving module 301, configured to receive first information sent by a network device, where the first information is used to indicate M candidate cells and a cell type of each candidate cell, and the cell type is a high-speed cell or a non-high-speed cell; a determining module 302, configured to determine a target cell from the M candidate cells according to the moving state of the UE and the first information received by the receiving module 301, where the target cell is a cell matched with the moving state of the UE; a switching module 303, configured to switch to the target cell determined by the determining module 302, where M is a positive integer.

Optionally, in this embodiment of the present invention, if the first information is a conditional handover command, the conditional handover command includes M cell identifiers and indication information corresponding to each cell identifier, where each cell identifier is used to indicate one candidate cell, and each indication information is used to indicate a cell type of one candidate cell; or, if the first information is an RRC reconfiguration message, the RRC reconfiguration message includes a first system information block SIB, and the first SIB is used to indicate cell types of the M candidate cells.

Optionally, in the embodiment of the present invention, one piece of indication information is any one of the following items: cell type indication information, second SIB, threshold of speed trigger condition.

Optionally, in the embodiment of the present invention, if one piece of indication information is cell type indication information, the cell type indication information is carried in one cell of the conditional switch command or in an information segment of the one cell.

Optionally, in this embodiment of the present invention, the determining module 302 is specifically configured to determine, if the moving state of the UE is a high-speed moving state, N high-speed cells from the M candidate cells according to the first information, and determine a target cell from the N high-speed cells, where N is a positive integer less than or equal to M; or, the determining module 302 is specifically configured to preferentially determine, if the moving state of the UE is the non-high-speed moving state, K non-high-speed cells from the M candidate cells according to the first information, and determine the target cell from the K non-high-speed cells, where K is a positive integer less than or equal to M.

Optionally, in this embodiment of the present invention, as shown in fig. 4, the UE 300 further includes a sending module 304; a sending module 304, configured to send a measurement report to the network device if the mobility state of the UE is a high-speed mobility state and the M candidate cells are all non-high-speed cells, where the measurement report is used to request to switch to a high-speed cell.

Optionally, in the embodiment of the present invention, the measurement report includes a cell frequency point, and the cell frequency point is a cell frequency point of a high-speed cell to which the UE requests handover.

Optionally, in this embodiment of the present invention, the determining module 302 is further configured to determine the cell frequency point according to the second information before the sending module 304 sends the measurement report to the network device; the second information includes at least one of: the frequency points of the high-speed cells indicated by the measurement configuration information, the frequency points of the non-high-speed cells indicated by the measurement configuration information and the frequency points of the M candidate cells.

The UE provided in the embodiment of the present invention can implement each process executed by the UE in the above-mentioned cell switching method embodiment, and can achieve the same technical effect, and for avoiding repetition, details are not described here again.

Embodiments of the present invention provide a UE, where the first information may be used to indicate M candidate cells and a cell type of each candidate cell in the M candidate cells, so that when the UE performs cell handover (for example, when a mobility state of the UE changes), the UE may accurately determine a cell (i.e., a target cell) matching a mobility state of the UE from the M candidate cells according to the mobility state of the UE and the received first information, so that the UE may accurately handover to a cell matching the mobility state of the UE, for example, when the mobility state of the UE is a high-speed mobility state, the UE may accurately handover to a high-speed cell, thereby ensuring communication quality of the UE and avoiding a call drop or a radio link failure of the UE.

As shown in fig. 5, an embodiment of the present invention provides a network device 400, which includes a sending unit 401. A sending unit 401, configured to send first information to the UE, where the first information is used to indicate M candidate cells and a cell type of each candidate cell, where the cell type is a high speed cell or a non-high speed cell, and M is a positive integer.

The network device provided by the embodiment of the present invention can implement each process executed by the network device in the cell switching method embodiment, and can achieve the same technical effect, and for avoiding repetition, details are not described here again.

The embodiment of the present invention provides a network device, where the first information may be used to indicate M candidate cells and a cell type of each candidate cell in the M candidate cells, so that the network device may send the first information to a UE, so that the UE may accurately determine a cell (i.e., a target cell) matching a UE moving state from the M candidate cells according to the moving state of the UE and the received first information when the UE performs cell handover, and thus the UE may accurately handover to a cell matching the UE moving state, for example, when the UE moving state is a high-speed moving state, the UE may accurately handover to a high-speed cell, thereby ensuring communication quality of the UE and avoiding a call drop or a radio link failure of the UE.

Fig. 6 is a hardware diagram of a UE implementing various embodiments of the present invention. As shown in fig. 6, the UE 100 includes, but is not limited to: radio frequency unit 101, network module 102, audio output unit 103, input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the UE structure shown in fig. 6 does not constitute a limitation of the UE, which may include more or fewer components than those shown, or combine certain components, or a different arrangement of components. In the embodiment of the present invention, the UE includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The radio frequency unit 101 is configured to receive first information sent by a network device, where the first information is used to indicate M candidate cells and a cell type of each candidate cell, and the cell type is a high-speed cell or a non-high-speed cell; the processor 110 is configured to determine a target cell from the M candidate cells according to the moving state of the UE and the first information received by the radio frequency unit, where the target cell is a cell matching the moving state of the UE; and switching to the target cell, wherein M is a positive integer.

It is to be understood that, in the embodiment of the present invention, the receiving module 301 and the sending module 304 in the structural schematic diagram of the UE (for example, fig. 4) may be implemented by the radio frequency unit 101, and the determining module 302 and the switching module 303 in the structural schematic diagram of the UE may be implemented by the processor.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 101 may be used for receiving and sending signals during a message transmission or call process, and specifically, after receiving downlink data from a base station, the downlink data is processed by the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through a wireless communication system.

The UE 100 provides the user with wireless broadband internet access via the network module 102, such as helping the user send and receive e-mails, browse web pages, and access streaming media.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the network module 102 or stored in the memory 109 into an audio signal and output as sound. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the UE 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 includes a speaker, a buzzer, a receiver, and the like.

The input unit 104 is used to receive an audio or video signal. The input unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, and the graphics processor 1041 processes image data of a still picture or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the network module 102. The microphone 1042 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode.

The UE 100 also includes at least one sensor 105, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or backlight when the UE 100 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the UE 100 attitude (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 105 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 106 is used to display information input by a user or information provided to the user. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the UE 100. Specifically, the user input unit 107 includes a touch panel 1071 and other input devices 1072. Touch panel 1071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 1071 (e.g., operations by a user on or near touch panel 1071 using a finger, stylus, or any suitable object or attachment). The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and receives and executes commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. Specifically, other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, the touch panel 1071 may be overlaid on the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although in fig. 6, the touch panel 1071 and the display panel 1061 are two separate components to implement the input and output functions of the UE 100, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the UE 100, and is not limited herein.

The interface unit 108 is an interface for connecting an external device to the UE 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input from external devices (e.g., data information, power, etc.) and transmit the received input to one or more elements within the UE 100 or may be used to transmit data between the UE 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the UE 100, connects various parts of the entire UE 100 using various interfaces and lines, performs various functions of the UE 100 and processes data by running or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the UE 100. Processor 110 may include one or more processing units; alternatively, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The UE 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and optionally, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to implement functions of managing charging, discharging, and power consumption via the power management system.

In addition, the UE 100 includes some functional modules that are not shown, and are not described in detail herein.

It is understood that, in the embodiment of the present invention, the UE 100 may be the UE 02 in the communication system shown in fig. 2 in the foregoing embodiment.

Optionally, an embodiment of the present invention further provides a UE, which includes the processor 110 shown in fig. 6, the memory 109, and a computer program stored in the memory 109 and capable of being executed on the processor 110, where the computer program, when executed by the processor 110, implements each process of the cell handover method embodiment, and can achieve the same technical effect, and is not described herein again to avoid repetition.

Fig. 7 is a hardware schematic diagram of a network device according to an embodiment of the present invention. As shown in fig. 7, the network device 500 may include: one or more processors 501, memory 502, and transceiver 503.

The transceiver 503 may be configured to send first information to the UE, where the first information is used to indicate M candidate cells and a cell type of each candidate cell, where the cell type is a high speed cell or a non-high speed cell, and M is a positive integer.

It should be noted that one of the two processors 501 in fig. 7 is shown by a dashed line to indicate that the number of the processors 501 in the network device 500 may be one or more. In fig. 7, the network device 500 includes two processors 501 for example.

It can be understood that, in the embodiment of the present invention, the sending unit 401 in the structural schematic diagram of the network device (for example, fig. 5) may be implemented by the transceiver 503.

In an embodiment of the invention, the one or more processors 501, memory 502, and transceiver 503 may be interconnected. One or more of the processors 501 may be a baseband unit (BBU), which may also be referred to as an indoor baseband processing unit; the transceiver 503 may be a Remote Radio Unit (RRU), which may also be referred to as a remote control transmitting unit. In addition, the network device 500 may further include some functional modules that are not shown, and are not described herein again.

It is understood that, in the embodiment of the present invention, the network device 500 may be the network device 01 in the communication system shown in fig. 2 in the above embodiment.

Optionally, an embodiment of the present invention further provides a network device, which includes the processor 501 shown in fig. 7, a memory 502, and a computer program that is stored in the memory 502 and is executable on the processor 501, and when the computer program is executed by the processor 501, the processes of the foregoing method embodiments are implemented, and the same technical effect can be achieved, and in order to avoid repetition, details are not described here again.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 110 shown in fig. 6 or the processor 501 shown in fig. 7, the computer program implements each process executed by the UE and the network device in the foregoing priority updating method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may include a read-only memory (ROM), a Random Access Memory (RAM), a magnetic or optical disk, and the like.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, an air conditioner, or a network device) to execute the methods of the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A cell switching method is applied to User Equipment (UE), and comprises the following steps:

receiving first information sent by network equipment, wherein the first information is used for indicating M candidate cells and the cell type of each candidate cell, the cell type is a high-speed cell or a non-high-speed cell, and M is a positive integer;

determining a target cell from the M candidate cells according to the moving state of the UE and the first information, wherein the target cell is a cell matched with the moving state of the UE;

and switching to the target cell.

2. The method of claim 1,

if the first information is a conditional handover command, the conditional handover command includes M cell identifiers and indication information corresponding to each cell identifier, where each cell identifier is used to indicate a candidate cell, and each indication information is used to indicate a cell type of a candidate cell;

or,

if the first information is a Radio Resource Control (RRC) reconfiguration message, the RRC reconfiguration message comprises a first System Information Block (SIB), and the first SIB is used for indicating cell types of the M candidate cells.

3. The method according to claim 2, wherein one indication information is any one of: cell type indication information, second SIB, threshold of speed trigger condition.

4. The method of claim 3, wherein the cell type indicator is carried in a cell or an information field of a cell of the conditional handover command if the one indicator is cell type indicator.

5. The method according to any one of claims 1 to 4,

the determining a target cell from the M candidate cells according to the moving state of the UE and the first information includes:

if the moving state of the UE is a high-speed moving state, determining N high-speed cells from the M candidate cells according to the first information, and determining the target cell from the N high-speed cells, wherein N is a positive integer less than or equal to M;

or,

and if the moving state of the UE is a non-high-speed moving state, preferentially determining K non-high-speed cells from the M candidate cells and determining the target cell from the K non-high-speed cells according to the first information, wherein K is a positive integer less than or equal to M.

6. The method of claim 5, further comprising:

and if the moving state of the UE is a high-speed moving state and the M candidate cells are all non-high-speed cells, sending a measurement report to the network equipment, wherein the measurement report is used for requesting to switch to the high-speed cells.

7. The method of claim 6, wherein the measurement report includes a cell frequency point, and the cell frequency point is a cell frequency point of a high-speed cell to which the UE requests handover.

8. The method of claim 7, wherein prior to sending the measurement report to the network device, the method further comprises:

determining the cell frequency point according to the second information;

the second information includes at least one of: and the frequency point of the high-speed cell indicated by the measurement configuration information, the frequency point of the non-high-speed cell indicated by the measurement configuration information and the frequency points of the M candidate cells.

9. A cell switching method is applied to a network device, and the method comprises the following steps:

and sending first information to User Equipment (UE), wherein the first information is used for indicating M candidate cells and the cell type of each candidate cell, the cell type is a high-speed cell or a non-high-speed cell, and M is a positive integer.

10. The method of claim 9,

or,

11. The method according to claim 10, wherein one indication information is any one of: cell type indication information, second SIB, threshold of speed trigger condition.

12. The method of claim 11, wherein the cell type indicator is carried in a cell or an information field of a cell of the conditional handover command if the one indicator is cell type indicator.

13. The UE is characterized by comprising a receiving module, a determining module and a switching module;

the receiving module is configured to receive first information sent by a network device, where the first information is used to indicate M candidate cells and a cell type of each candidate cell, where the cell type is a high-speed cell or a non-high-speed cell, and M is a positive integer;

the determining module is configured to determine a target cell from the M candidate cells according to the moving state of the UE and the first information received by the receiving module, where the target cell is a cell matched with the moving state of the UE;

the switching module is configured to switch to the target cell determined by the determining module.

14. The UE of claim 13,

or,

15. The UE of claim 14, wherein one indication information is any one of the following: cell type indication information, second SIB, threshold of speed trigger condition.

16. The UE of claim 15, wherein the cell type indicator is carried in an information element or an information field of an information element of the conditional handover command if the one indicator is cell type indicator.

17. The UE of any one of claims 13 to 16,

the determining module is specifically configured to determine, if the moving state of the UE is a high-speed moving state, N high-speed cells from the M candidate cells according to the first information, and determine the target cell from the N high-speed cells, where N is a positive integer less than or equal to M;

or,

the determining module is specifically configured to preferentially determine, if the moving state of the UE is a non-high-speed moving state, K non-high-speed cells from the M candidate cells according to the first information, and determine the target cell from the K non-high-speed cells, where K is a positive integer less than or equal to M.

18. The UE of claim 17, further comprising a transmitting module;

the sending module is configured to send a measurement report to the network device if the moving state of the UE is a high-speed moving state and the M candidate cells are all non-high-speed cells, where the measurement report is used to request to switch to a high-speed cell.

19. The UE of claim 18, wherein the measurement report comprises a cell frequency point, and wherein the cell frequency point is a cell frequency point of a high speed cell to which the UE requests handover.

20. The UE of claim 19, wherein the determining module is further configured to determine the cell frequency point according to second information before the sending module sends the measurement report to the network device;

21. A network device, characterized in that the network device comprises a transmitting unit;

the sending unit is configured to send first information to a user equipment UE, where the first information is used to indicate M candidate cells and a cell type of each candidate cell, where the cell type is a high-speed cell or a non-high-speed cell, and M is a positive integer.

22. The network device of claim 21,

or,

23. The network device of claim 22, wherein one indication is any one of the following: cell type indication information, second SIB, threshold of speed trigger condition.

24. The network device of claim 23, wherein if one indication information is cell type indication information, the cell type indication information is carried in one cell or an information field of one cell of the conditional handover command.

25. A user equipment, UE, comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the cell handover method according to any of claims 1 to 8.

26. A network device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the cell handover method according to any of claims 9 to 12.

27. A communication system comprising a user equipment, UE, according to any of claims 13 to 20 and a network device according to any of claims 21 to 24; or,

the communication system comprises the UE of claim 25, and the network device of claim 26.

28. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the cell handover method according to one of claims 1 to 12.