CN113453295A

CN113453295A - Cell switching method, equipment and system

Info

Publication number: CN113453295A
Application number: CN202010232134.1A
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
Anticipated expiration: 2040-03-27
Also published as: CN113453295B

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 existing network equipment cannot configure a switching command or a conditional switching command to UE in time, so that the UE cannot be switched to a high-speed cell, and the UE is dropped or a wireless link fails. The method comprises the following steps: under the condition that the UE is in a connected state, first information is sent to network equipment, and the first information is used for indicating the moving state of the UE; receiving a first switching command sent by network equipment, wherein the first switching command is used for indicating to switch to a first cell or indicating M candidate cells for conditional switching, and the first cell or the M candidate cells are determined according to the moving state of UE; and switching to a target cell according to the first switching command, wherein the target cell is the first cell or a cell in M candidate cells, and 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 UE is in a connected state, if the network device determines that the UE is in a high-speed moving state, the network device may configure a handover command or a Conditional Handover (CHO) command for the UE, and instruct the UE to handover to a high-speed cell. Therefore, the UE can be switched to a certain high-speed cell according to a switching command configured by the network equipment; or, the UE may select a high speed cell satisfying the UE usage requirement from a plurality of candidate cells indicated by the conditional handover command configured by the network device, and handover to the high speed cell, so as to ensure the network service quality of the UE in the high speed moving state.

However, in the above process, since the network device may determine whether the UE is in the high-speed moving state according to the frequency of the UE switching the cell within a certain time, the time when the network device determines that the UE is in the high-speed moving state may not be consistent with the time when the UE actually enters the high-speed moving state, that is, the network device may not be able to determine whether the UE is in the high-speed moving state in time. Therefore, the network device may not configure the handover command or the conditional handover command to the UE in time, so that the UE cannot be handed over to the high-speed cell, and a call drop or a radio link failure occurs in the UE.

Disclosure of Invention

The embodiment of the invention provides a cell switching method, equipment and a system, which aim to solve the problem that the existing network equipment cannot configure a switching command or a conditional switching command to UE in time, so that the UE cannot be switched to a high-speed cell, and the UE is dropped or a wireless link fails.

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: under the condition that the UE is in a connected state, first information is sent to network equipment, and the first information is used for indicating the moving state of the UE; receiving a first switching command sent by network equipment, wherein the first switching command is used for indicating to switch to a first cell or indicating M candidate cells for conditional switching, and the first cell or the M candidate cells are determined according to the moving state of the UE; and switching to a target cell according to the first switching command, wherein the target cell is the first cell or a cell in M candidate cells, and 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: receiving first information sent by UE, wherein the first information is used for indicating the moving state of the UE; determining a first cell or M candidate cells for conditional switching according to the moving state of the UE; and sending a first switching command to the UE, wherein the first switching command is used for indicating to switch to the first cell or indicating M candidate cells, and M is a positive integer.

In a third aspect, an embodiment of the present invention provides a UE, where the UE includes a sending module, a receiving module, and a switching module. A sending module, configured to send first information to a network device when the UE is in a connected state, where the first information is used to indicate a moving state of the UE; a receiving module, configured to receive a first handover command sent by the network device after the sending module sends the first information, where the first handover command is used to instruct handover to the first cell or instruct M candidate cells for conditional handover, and the first cell or the M candidate cells are determined according to a moving state of the UE; and the switching module is used for switching to a target cell according to the first switching command received by the receiving module, wherein the target cell is the first cell or a cell of M candidate cells, and M is a positive integer.

In a fourth aspect, an embodiment of the present invention provides a network device, which includes a receiving unit, a determining unit, and a sending unit. A receiving unit, configured to receive first information sent by a user equipment UE, where the first information is used to indicate a mobility state of the UE; a determining unit, configured to determine, after the receiving unit receives the first information, the first cell or M candidate cells for conditional handover according to a moving state of the UE; and a sending unit, configured to send a first handover command to the UE, where the first handover command is used to instruct to handover to the first cell determined by the determining unit or instruct to instruct M candidate cells determined by the determining unit, where 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 in the first aspect or the second aspect.

In the embodiment of the present invention, first information may be sent to a network device when the UE is in a connected state, where the first information is used to indicate a moving state of the UE; receiving a first switching command sent by network equipment, wherein the first switching command is used for indicating to switch to a first cell or indicating M candidate cells for conditional switching, and the first cell or the M candidate cells are determined according to the moving state of the UE; and switching to a target cell according to the first switching command, wherein the target cell is the first cell or a cell in M candidate cells, and M is a positive integer. According to the scheme, under the condition that the UE is in the connected state, the UE can inform the network equipment of the moving state of the UE by sending the first information to the network equipment, so that the network equipment can timely and accurately determine the moving state of the UE, the network equipment can indicate the UE to be switched to a cell (namely a first cell) matched with the moving state of the UE or indicate M candidate cells used for conditional switching of the moving state matching of the UE to the UE according to the moving state of the UE, and the UE can be switched to a cell meeting the use requirement of the UE according to the indication of the network equipment so as to ensure the service quality of the UE. For example, when the UE is in a high-speed moving state, the network device may instruct the UE to switch to a certain high-speed cell according to the moving state of the UE, or instruct the UE to indicate at least one high-speed candidate cell for conditional switching, so that the UE may switch to a high-speed cell meeting its use requirement in time, thereby ensuring the service quality of the UE in the high-speed moving state.

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

fig. 5 is a third schematic flowchart of a cell handover method according to an embodiment of the present invention;

fig. 6 is a fourth schematic flowchart of a cell handover method according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a UE according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 9 is a hardware diagram of a UE according to an embodiment of the present invention;

fig. 10 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 configuration information, the second configuration information, and the like are used to distinguish different configuration information, and are not used to describe a specific order of the configuration 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).

Moving state of speed level indication: refers to a speed level, indicated mobility state, determined from a speed range agreed upon by the protocol (or configured or indicated by the 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, a device and a system, which can send first information to network equipment under the condition that UE is in a connected state, wherein the first information is used for indicating the moving state of the UE; receiving a first switching command sent by network equipment, wherein the first switching command is used for indicating to switch to a first cell or indicating M candidate cells for conditional switching, and the first cell or the M candidate cells are determined according to the moving state of the UE; and switching to a target cell according to the first switching command, wherein the target cell is the first cell or a cell in M candidate cells, and M is a positive integer. According to the scheme, under the condition that the UE is in the connected state, the UE can inform the network equipment of the moving state of the UE by sending the first information to the network equipment, so that the network equipment can timely and accurately determine the moving state of the UE, the network equipment can indicate the UE to be switched to a cell (namely a first cell) matched with the moving state of the UE or indicate M candidate cells used for conditional switching of the moving state matching of the UE to the UE according to the moving state of the UE, and the UE can be switched to a cell meeting the use requirement of the UE according to the indication of the network equipment so as to ensure the service quality of the UE. For example, when the UE is in a high-speed moving state, the network device may instruct the UE to switch to a certain high-speed cell according to the moving state of the UE, or instruct the UE to indicate at least one high-speed candidate cell for conditional switching, so that the UE may switch to a high-speed cell meeting its use requirement in time, thereby ensuring the service quality of the UE in the high-speed moving state.

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 invention, the UE can determine the moving state of the UE according to the estimated value of the moving speed of the UE. In this way, in the case that the UE is in the connected state, the UE may send a message (e.g., the first message in the embodiment of the present invention) to the network device to inform the network device of the mobility state of the UE. After the network device receives the information, the network device may determine that the UE requests handover to a cell matching the mobility state of the UE, or request the network device to configure a candidate cell for conditional handover for the UE matching the mobility state of the UE. In this way, the network device may send a handover command to the UE to instruct the UE to handover to a cell matching the mobility state of the UE, or send a conditional handover command to instruct the UE of at least one candidate cell for conditional handover (the at least one candidate cell includes a candidate cell matching the mobility state of the UE), so that the UE may handover to a cell matching the mobility state of the UE according to the handover command or the conditional handover command (e.g., the first handover command in the embodiment of the present invention) sent by the network device, thereby ensuring the service quality of the UE.

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 accompanying 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 may include the following S201-S206.

S201, under the condition that the UE is in a connection state, the UE sends first information to network equipment.

The first information may be used to indicate a mobility state of the UE.

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

In the embodiment of the present invention, when the UE is in the connected state, the UE may send the first information to the network device, and after the network device receives the first information sent by the UE, the network device may determine, according to the moving state of the UE indicated by the first information, a cell matching the moving state of the UE.

It can be understood that, in the embodiment of the present invention, the mobility state of the UE may be a real-time mobility state of the UE.

Optionally, in this embodiment of the present invention, the moving state of the UE is any one of the following: a high speed movement state, a non-high speed movement state (e.g., a low speed movement state), a movement state indicated by a speed level.

In the embodiment of the invention, the UE can determine the moving speed of the UE through measurement and estimation, thereby determining the moving state of the UE.

Optionally, in the embodiment of the present invention, the UE may estimate the UE moving speed according to the measurement configuration sent by the network device. As such, after the UE receives the measurement configuration, the UE may make a UE movement speed estimation.

The measurement configuration may be a high speed measurement (high speed measurement) configuration.

Optionally, in the embodiment of the present invention, before entering the connected state, the UE may perform UE movement speed estimation; or after entering the connection state, estimating the movement speed of the UE; or before entering the connected state, the moving speed is estimated, and after entering the connected state, the UE moving speed is estimated. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

Optionally, in the embodiment of the present invention, in the first implementation manner, the protocol agrees (or the network device configuration, or the network device indication) with a speed threshold. Specifically, the speed threshold may be a threshold of a high-speed moving state.

For the first implementation manner, the UE may determine a moving speed of the UE (specifically, the estimated moving speed of the UE) through measurement estimation, and then compare the moving speed with the threshold of the high-speed moving state. If the moving speed is greater than or equal to the threshold of the high-speed moving state, the UE may determine that the moving state of the UE is the high-speed moving state; if the moving speed is less than the threshold of the high speed moving state, the UE may determine that the moving state of the UE is a non-high speed moving state.

It is to be understood that, for the first implementation manner, the mobility state of the UE may be a high-speed mobility state or a non-high-speed mobility state.

For example, assuming that the threshold of the high-speed moving state is 200 kilometers per hour (km/h), when the UE estimates the measurement result of the moving speed of the UE is greater than or equal to 200km/h, the UE may determine that the moving state of the UE is a high-speed moving state; when the measurement estimation result of the UE on the moving speed is less than 200km/h, the UE can determine that the moving state of the UE is a non-high-speed moving state.

It should be noted that, in practical implementation, when the UE determines the moving state of the UE, the UE may also determine other conditions besides the moving speed of the UE. 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, in a second implementation manner, a protocol agrees (or a network device configuration, or a network device indication) with multiple speed thresholds.

Illustratively, the plurality of speed thresholds may include a first speed threshold and a second speed threshold.

It should be noted that, the embodiment of the present invention is only exemplified by the above-mentioned multiple speed thresholds including two speed thresholds, and does not limit the present application in any way. In practical implementation, the plurality of speed thresholds may further include any plurality of speed thresholds, which may be determined according to practical use requirements, and the embodiment of the present invention is not limited.

For the second implementation, the speed level corresponding to the moving speed less than the first speed threshold may be a first speed level (e.g., speed level 0); the speed level corresponding to the moving speed greater than or equal to the first speed threshold and less than the second speed threshold may be a second speed level (for example, speed level 1); the speed level corresponding to a moving speed greater than or equal to the second speed threshold may be a third speed level (e.g., speed level 2).

For example, the first speed threshold may be a high speed threshold 1, and the second speed threshold may be a high speed threshold 2.

In an embodiment of the present invention, the moving state indicated by the first speed level may be a non-high-speed moving state, the moving state indicated by the second speed level may be a first high-speed moving state, and the moving state indicated by the third speed level may be a second high-speed moving state.

For the relationship between the UE moving speed, the speed threshold, and the speed level, see table 1 below.

TABLE 1

Speed rating	UE moving speed
		0	< high speed threshold 1
1	Not less than high speed threshold 1 and not less than high speed threshold 2
		2	Not less than high speed threshold 2

Optionally, for the second implementation manner, the UE may obtain a mobility speed value of the UE through measurement and estimation (specifically, may be an estimated value of the UE mobility speed), and then the UE determines the mobility speed level of the UE according to the mobility speed value, so that the UE may indicate the mobility state through the speed level.

Illustratively, the first speed threshold value is 200km/h, and the second speed threshold value is 350 km/h. Then, the UE may determine that the moving speed level of the UE is a first speed level when the UE has a measurement evaluation result of its moving speed value of less than 200km/h, and may determine that the moving speed level of the UE is a second speed level when the UE has a measurement evaluation result of its moving speed value of greater than or equal to 200km/h and less than 350 km/h; when the UE evaluates the measurement of its moving speed value to be greater than or equal to 350km/h, the UE may determine that the moving speed level is a third speed level.

In the embodiment of the present invention, since the moving state of the UE may be indicated in different manners, for example, directly indicate the moving state, or indicate by a speed level, the UE may send the first information meeting the actual use requirement to the network device, so that the content of the first information sent by the UE may be flexible.

Optionally, the first information may include at least one of: UE assistance information, UE mobility measurement report.

It can be understood that, in the embodiment of the present invention, the first information may include UE auxiliary information, may also include a UE mobility measurement report, and may also include UE auxiliary information and a UE mobility measurement report.

It should be noted that, in order to ensure readability of the embodiments of the present invention, the UE assistance information and the UE mobility measurement report will be described in detail in the following embodiments, and details are not repeated herein.

S203, the network equipment determines the first cell or M candidate cells for conditional switching according to the moving state of the UE.

Wherein M is a positive integer.

It is to be understood that the first cell or the M candidate cells for conditional handover may be determined according to the mobility state of the UE.

In this embodiment of the present invention, after the network device receives the first information, the network device may determine that the UE requests to switch to a cell matching the mobility state of the UE, or request the network device to configure a candidate cell for the UE, where the candidate cell matches the mobility state of the UE. Thus, the network device may determine a cell (i.e., the first cell) matching the mobility state of the UE or determine M candidate cells for the conditional handover (hereinafter, referred to as M candidate cells) according to the mobility state of the UE.

It should be noted that, in the embodiment of the present invention, the M candidate cells may include a candidate cell matched with a moving state of the UE.

Optionally, in this embodiment of the present invention, when the mobility state of the UE is a high speed mobility state, the network device may determine a high speed cell (i.e., the first cell), and then instruct the UE to switch to the high speed cell. Alternatively, the network device may determine high-speed candidate cells for conditional handover, thereby determining M candidate cells for the conditional handover, and then indicate the M candidate cells to the UE.

Optionally, in this embodiment of the present invention, when the mobility state of the UE is a non-high speed mobility state, the network device may preferentially determine a non-high speed cell (i.e., the first cell), and then instruct the UE to switch to the non-high speed cell. Alternatively, the network device may preferentially determine the non-high speed candidate cells for conditional handover, thereby determining M candidate cells for the conditional handover, and then indicate the M candidate cells to the UE.

S204, the network equipment sends a first switching command to the UE.

The first handover command may be used to instruct the UE to handover to the first cell or instruct M candidate cells for the conditional handover.

S205, the UE receives a first switching command sent by the network equipment.

S206, the UE is switched to the target cell according to the first switching command.

The target cell may be the first cell or a cell of M candidate cells for the conditional handover.

In this embodiment of the present invention, after the network device determines the first cell or the M candidate cells, the network device may send the first handover command to the UE, so as to instruct the UE to handover to the first cell, or instruct the M candidate cells to the UE. In this way, after the UE receives the first handover command, the UE may handover to the target cell.

Specifically, when the first handover command indicates that the UE is handed over to the first cell, after the UE receives the first handover command, the UE may be handed over directly to the first cell (i.e., the target cell). When the first handover command indicates M candidate cells for conditional handover to the UE, after the UE receives the first handover command, the UE may perform measurement on the M candidate cells, select a cell matching the mobility state of the UE from the M candidate cells, and then may handover the UE to the cell.

Optionally, in this embodiment of the present invention, when the first handover command is used to instruct the UE to handover to the first cell, the first handover command may be a conventional handover command. After the UE receives the handover command, the UE may directly handover to the first cell.

Optionally, in this embodiment of the present invention, when the first handover command is used to indicate M candidate cells for conditional handover, the first handover command may be a conditional handover command. When the UE receives the conditional handover command, the UE may select a cell matching the mobility state of the candidate cell from the M candidate cells according to the mobility state of the candidate cell, and perform cell handover.

For example, when the mobility state of the UE is a high speed mobility state, the UE may measure and estimate a high speed cell matching the mobility state from the M candidate cells, and then switch to the high speed cell.

The embodiment of the invention provides a cell switching method, because under the condition that UE is in a connected state, the UE can inform network equipment of the moving state of the UE by sending first information to the network equipment, so that the network equipment can timely and accurately determine the moving state of the UE, the network equipment can instruct the UE to be switched to a cell (namely a first cell) matched with the moving state of the UE according to the moving state of the UE, or instruct the UE to be switched to M candidate cells for the condition matching with the moving state of the UE, and further the UE can be switched to a cell meeting the use requirement of the UE according to the instruction of the network equipment so as to ensure the service quality of the UE. For example, when the UE is in a high-speed moving state, the network device may instruct the UE to switch to a certain high-speed cell according to the moving state of the UE, or instruct the UE to indicate at least one high-speed candidate cell for conditional switching, so that the UE may switch to a high-speed cell meeting its use requirement in time, thereby ensuring the service quality of the UE in the high-speed moving state.

Optionally, in this embodiment of the present invention, when the content (UE assistance information and/or UE mobility measurement report) included in the first information is different, an execution manner of sending, by the UE, the first information to the network device may be different.

The following describes an exemplary case where the first information includes UE assistance information and the first information includes a UE mobility measurement report.

The first condition is as follows: the first information includes UE assistance information.

In case one, the first information may be UE assistance information, or may include UE assistance information and other information.

In the embodiment of the present invention, the first information is taken as the UE assistance information for example, and for the case that the first information includes the UE assistance information and other information, the implementation manner of the first information is similar to the implementation manner of the first information as the UE assistance information, and in order to avoid repetition, the embodiment of the present invention is not repeated.

In the embodiment of the present invention, the UE assistance information may be a Radio Resource Control (RRC) message.

In the embodiment of the present invention, the UE may report the preference of the UE through the UE auxiliary information, including power headroom (power headroom), overheating (overheating), and the like.

For example, the UE assistance information may be high speed priority information.

Optionally, in this embodiment of the present invention, the UE assistance information may carry a first parameter, where the first parameter may be used to indicate a moving state of the UE.

Optionally, in an embodiment of the present invention, the first parameter may be a high speed first (preferredHighSpeed) parameter.

It is understood that in the embodiment of the present invention, "preferredHighSpeed" may be a parameter name.

For example, the UE assistance information may be in the following format:

UE Assistant Information-vxxx-IEs:::::::::::::::::::::::::::::::::::::::::::::::::::/UE Assistance Information

preferredHighSpeed ENUMERATED { true, false } OPTIONAL,// high speed preference

For example, in a case where the UE enters a high speed mobility state during the connected state, when the UE transmits UE assistance information carrying a preferredHighSpeed parameter to the network device, the UE may set the preferredHighSpeed parameter to true.

As another example, in the case where the UE leaves the high speed mobility state during the connected state, when the UE transmits the UE assistance information carrying the preferredHighSpeed parameter to the network device, the UE may set the preferredHighSpeed parameter to false.

In the embodiment of the invention, under the condition that the UE is in a non-connected state, the UE does not need to send the UE auxiliary information carrying the preferredHighSpeed parameter to the network equipment.

Optionally, for the first case, the timing at which the UE sends the first information to the network device (specifically, may be to send the UE assistance information to the network device) may include three possible timings, which are timing one, timing two, and timing three, respectively. These three timings will be exemplarily described below.

The first time is as follows: in the event that the UE enters the connected state from the unconnected state, the UE may send UE assistance information to the network device.

It can be appreciated that for opportunity one, after the UE enters the connected state, the UE may send the UE assistance information to the network device without determining whether the mobility state of the UE is the high speed mobility state. That is, the UE sends the UE assistance information to the network device regardless of the mobility state of the UE.

And a second time: in the case where the UE is in a high-speed mobility state, the UE may send UE assistance information to the network device.

It can be appreciated that for opportunity two, when the UE is in the connected state, the UE sends the UE assistance information to the network device only when the UE determines that the mobility state of the UE is the high speed mobility state. That is, if the UE is in a non-high speed state, the UE does not transmit UE assistance information to the network device.

For the second time, the purpose of the UE sending the UE assistance information is: informing the network equipment that the UE is prone to high speed (high speed) or high mobility state configuration (e.g. handover to a high speed cell, or configuring a high speed cell in a conditional handover command, etc.).

And a third time: the UE may send UE assistance information to the network device in the event the UE switches from the first mobility state to the second mobility state.

It can be appreciated that for opportunity three, the UE may send the UE assistance information to the network device in case the mobility state of the UE changes.

Optionally, in this embodiment of the present invention, the first moving state may be a high-speed moving state, and the second moving state may be a non-high-speed moving state; or the first moving state may be a non-high-speed moving state, and the second moving state may be a high-speed moving state; or the first moving state is a moving state indicated by a first speed level, and the second moving state is a moving state indicated by a second speed level; or the first mobility state is a mobility state indicated by the second velocity level, the second mobility state is a mobility state indicated by the third velocity level, and so on. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.

It should be noted that, for the above case one (where the first information includes UE assistance information), the embodiment of the present invention only takes the above three occasions (the first occasion, the second occasion, and the third occasion) as an example, and exemplifies the occasion when the UE transmits the UE assistance information to the network device, which does not limit the present application in any way. In actual implementation, the time when the UE sends the UE assistance information to the network device may also be any other possible time, and may specifically be determined according to actual usage requirements, which is not limited in the embodiment of the present invention.

Optionally, for the first case, before the UE sends the UE assistance information to the network device, the network device may indicate, through configuration information (e.g., the first configuration information in the embodiment of the present invention), whether to allow the UE to send the UE assistance information. Specifically, if the configuration information indicates that the UE is prohibited from transmitting the UE assistance information, the UE does not transmit the UE indication information to the network device even if the UE determines that the UE assistance information can be transmitted to the network device (for example, satisfying one of the above three occasions). If the configuration information indicates that the UE is allowed to transmit UE assistance information, the UE transmits the UE assistance information to the network device when the UE determines that the UE assistance information can be transmitted to the network device.

For example, with reference to fig. 3, as shown in fig. 4, before S201, the cell handover method provided in the embodiment of the present invention may further include S207 to S209 described below. Specifically, S201 may be implemented by S201a described below.

S207, the network equipment sends the first configuration information to the UE.

Wherein the first configuration information is used for indicating whether to allow the UE assistance information to be transmitted.

S208, the UE receives the first configuration information sent by the network equipment.

S209, the UE determines whether the first configuration information indicates that the UE assistance information is allowed to be transmitted.

S201a, when the UE is in the connected state, the UE sends UE assistance information to the network device.

In this embodiment of the present invention, before the UE sends the UE auxiliary information to the network device, the network device may send the first configuration information to the network device, and after the UE receives the first configuration information, the UE may determine whether the first configuration information indicates that the UE is allowed to send the UE auxiliary information. If the first configuration information allows the UE to send the UE assistance information, the UE may send the UE assistance information to the network device; if the first configuration information prohibits the UE from sending the UE auxiliary information, the UE does not send the UE auxiliary information to the network equipment.

It should be noted that, for the network device side, in the case that the first configuration information allows the UE to send the UE configuration information, the network device may receive the UE assistance information sent by the UE.

Optionally, for the first case (the first information includes UE assistance information), after the UE sends the UE assistance information to the network device, the UE may start a timer. In this way, the UE can be prevented from frequently sending the same type of assistance information as the UE assistance information to the network device.

For example, after the above S201, the cell handover method provided in the embodiment of the present invention may further include the following S210.

S210, the UE starts a timer, wherein before the timer is overtime, the UE is prohibited from sending the auxiliary information with the same type as the auxiliary information of the UE to the network equipment.

It can be appreciated that after the UE starts the timer, the UE may still send assistance information of a different type than the UE assistance information, such as overheating assistance information of the UE, to the network device.

In the embodiment of the invention, after the UE sends the UE auxiliary information to the network equipment, the UE can start the timer. Before the timer expires, the UE is prohibited from sending assistance information of the same type as the UE assistance information to the network device. That is, during the running of the timer (running), the UE must not send the same type of assistance information as the UE assistance information to the network device again.

It should be noted that, in the embodiment of the present invention, the "after the UE sends the UE assistance information to the network device" may specifically be: when the RRC delivers an RRC message containing UE assistance information to the lower layer.

Optionally, in the embodiment of the present invention, the timer may be a prohibit timer (prohibit timer).

In the embodiment of the invention, the UE is forbidden to send the UE auxiliary information to the network equipment before the timer is overtime, so that the UE can avoid resource waste caused by the fact that the UE frequently sends (or reports) the same type of auxiliary information to the network equipment by starting the timer after the UE sends the UE auxiliary information to the network equipment.

Case two: the first information includes a UE mobility measurement report.

In case two, the first information may be a UE mobility measurement report, or may include the UE mobility measurement report and other information.

In the embodiment of the present invention, the first information is taken as the UE mobility measurement report for example, and for the case that the first information includes the UE mobility measurement report and other information, the implementation manner of the first information is similar to the implementation manner of the first information as the UE mobility measurement report, and in order to avoid repetition, the embodiment of the present invention is not repeated.

Optionally, for the second case, an opportunity of the UE to send the first information to the network device (specifically, may be to send the UE mobility measurement report to the network device) may be a target opportunity as described below. The target timing will be exemplarily described below.

Target opportunity: the UE may send a UE mobility measurement report to the network device when the UE is in a connected state and satisfies a measurement reporting condition.

The measurement reporting condition may include: the moving speed of the UE satisfies a target threshold, and satisfies a time to trigger (time to trigger), and satisfies a measurement reporting delay (hysteresis).

It can be understood that, in the embodiment of the present invention, the UE mobility measurement report includes an event trigger (event trigger) for reporting an event. That is, the measurement report condition is the event trigger.

Optionally, in the embodiment of the present invention, when the moving speed of the UE meets the target threshold (specifically, the moving speed value of the UE meets the target threshold), it may be that the moving speed of the UE is greater than the target threshold. The target threshold may be a high speed-threshold (high speed-threshold) threshold.

Optionally, in this embodiment of the present invention, the target threshold may be configured by the network device to the UE.

It should be noted that, in the second case, the time when the UE sends the UE mobility measurement report to the network device may also be any other possible time, which may be determined according to actual usage requirements, and the embodiment of the present invention is not limited.

Optionally, for the second case (where the first information includes a UE mobility measurement report), before the UE sends the UE mobility measurement report to the network device, the network device may send a measurement configuration information (e.g., the second configuration information in the embodiment of the present invention) to the UE, so as to instruct the UE to measure and report the mobility state of the UE.

For example, referring to fig. 3, as shown in fig. 5, before the foregoing S201, the cell handover method provided in the embodiment of the present invention may further include following S211 and S212. Specifically, S201 may be implemented by S201b described below.

S211, the network equipment sends second configuration information to the UE.

The second configuration information may be used to instruct the UE to measure and report a mobility state of the UE.

S212, the UE receives second configuration information sent by the network equipment.

S201b, when the UE is in the connected state, the UE sends a UE mobility measurement report to the network device.

In the embodiment of the present invention, before the UE sends the UE mobility measurement report to the network device, the network device may instruct the UE to measure and report the mobility state of the UE by sending the second configuration information to the UE.

Optionally, in this embodiment of the present invention, the second configuration information may be high-speed mobility measurement configuration information.

Optionally, in this embodiment of the present invention, the second configuration information may include a measurement object.

It should be noted that, in the embodiment of the present invention, the measurement object may be content that the network device requires the UE to measure and report.

Optionally, in an embodiment of the present invention, the measurement object may be any one of the following items: the moving speed of the UE and the high-speed moving state of the UE.

Of course, in actual implementation, the measurement object may further include any other possible content, which may be determined according to actual usage requirements, and the embodiment of the present invention is not limited.

Optionally, in this embodiment of the present invention, when the measurement object is a moving speed of the UE, the network device may instruct the UE to report a moving speed gear (also referred to as a moving speed level) of the UE through the second configuration information.

For example, as shown in table 2 below, the moving speed (denoted as a) of the UE may include 6 gears. Wherein, the gear 0 represents that a is more than 0 and less than 100 km/h; the gear position "1" represents that a is more than or equal to 100km/h and less than 200 km/h; the gear position "2" represents that a is more than or equal to 200km/h and less than 300 km/h; the gear position "3" represents that a is more than or equal to 300km/h and less than 400 km/h; the gear position "4" represents that a is more than or equal to 400km/h and less than 500 km/h; the gear position "5" represents 500 km/h.ltoreq.a.

TABLE 2

UE movement speed gear	Terminal moving speed range (km/h)
		0	0～100
1	100～200
		2	200～300
3	300～400
		4	400～500
5	500 to more than

Optionally, in the embodiment of the present invention, when the measurement object is in a high-speed moving state of the UE, the corresponding measurement quantity may be whether the UE enters the high-speed moving state.

It should be noted that, in the embodiment of the present invention, for the description of how the UE determines whether the UE enters the high-speed moving state, reference may be specifically made to the detailed description of the moving state of the UE in the foregoing embodiment, and in order to avoid repetition, details are not described here again.

Optionally, in this embodiment of the present invention, before the UE sends the first information to the network device, if the UE has received a conditional handover command of the network device, when the UE determines that the conditional handover command does not include a cell matching the mobility state of the UE, the UE may send the first information to the network device, so as to request the network device to configure a candidate cell for conditional handover matching the mobility state of the UE, or request the network device to instruct the UE to handover to a cell matching the mobility state of the UE.

For example, referring to fig. 3, as shown in fig. 6, before the foregoing S201, the cell handover method provided in the embodiment of the present invention may further include following S213 and S214.

S213, the UE receives the conditional switch command sent by the network equipment.

The conditional handover command may be used to indicate N candidate cells for conditional handover, where N is a positive integer.

S214, the UE determines whether the N candidate cells include cells matched with the moving state of the UE.

In this embodiment of the present invention, before the UE sends the first information to the network device, the UE may receive a conditional handover command sent by the network device, and after the UE performs the UE mobility measurement estimation, if the UE determines that the N candidate cells indicated in the conditional handover command do not include a cell matching the UE mobility state, the UE may send the first information to the network device, so as to request the network device to configure a cell matching the UE mobility state or request handover to a cell matching the UE mobility state.

Accordingly, if the N candidate cells include a cell matching the mobility state of the UE, the UE may be directly handed over to the cell.

For example, assuming that the N candidate cells do not include any high speed cell when the mobility state of the UE is a high speed mobility state, the UE may request the network device to configure a candidate high speed cell for conditional handover to the UE by sending first information (e.g., UE assistance information or a UE mobility measurement report) to the network device, or request the network device to instruct the UE to handover to a certain high speed cell.

It should be noted that, in the embodiment of the present invention, the cell handover methods shown in the above drawings are all exemplarily described by referring to one drawing in the embodiment of the present invention. In specific implementation, the cell switching method shown in each of the above-mentioned figures may also be implemented in combination with any other drawing that may be combined, which is illustrated in the above-mentioned embodiments, and is not described herein again.

As shown in fig. 7, an embodiment of the present invention provides a UE 300. The UE 300 may include a transmitting module 301, a receiving module 302, and a switching module 303. A sending module 301, configured to send first information to a network device when a UE is in a connected state, where the first information is used to indicate a moving state of the UE; a receiving module 302, configured to receive a first handover command sent by the network device after the sending module 301 sends the first information, where the first handover command is used to instruct handover to a first cell or to instruct conditional handover of M candidate cells, where the first cell or the M candidate cells are determined according to a mobility state of the UE; the handover module 303 may be configured to handover to a target cell according to the first handover command received by the receiving module 302, where the target cell is the first cell or a cell of M candidate cells, and M is a positive integer.

Optionally, in this embodiment of the present invention, the moving state of the UE is any one of the following: a high speed movement state, a non-high speed movement state, a movement state indicated by a speed level.

Optionally, in this embodiment of the present invention, the first information includes at least one of the following: UE assistance information, UE mobility measurement report.

Optionally, in this embodiment of the present invention, the first information includes UE auxiliary information; a sending module 301, configured to send UE auxiliary information to a network device when a UE enters a connected state from a non-connected state; or, the sending module 301 is specifically configured to send the UE assistance information to the network device when the UE is in the high-speed moving state; or, the sending module 301 is specifically configured to send the UE assistance information to the network device when the UE switches from the first mobility state to the second mobility state.

Optionally, in this embodiment of the present invention, the receiving module 302 is further configured to receive first configuration information sent by the network device before the sending module 301 sends the UE auxiliary information to the network device, where the first configuration information is used to indicate whether to allow sending the UE auxiliary information; the sending module 301 is specifically configured to send the UE assistance information to the network device if the first configuration information indicates that the UE assistance information is allowed to be sent.

Optionally, in this embodiment of the present invention, as shown in fig. 7, the UE 300 further includes an executing module 304. The executing module 304 may be configured to start a timer after the transmitting module 301 transmits the UE assistance information to the network device, wherein the UE is prohibited from transmitting the assistance information of the same type as the UE assistance information to the network device before the timer expires.

Optionally, in the embodiment of the present invention, the UE assistance information carries a first parameter, and the first parameter is used to indicate a moving state of the UE.

Optionally, in this embodiment of the present invention, the first information includes a UE mobility measurement report; a sending module 301, configured to send a UE mobility measurement report to a network device when the UE is in a connected state and meets a measurement reporting condition; the measurement reporting conditions comprise: the moving speed of the UE meets a target threshold, meets the trigger time of measurement reporting and meets the delay time of measurement reporting.

Optionally, the receiving module 302 is further configured to receive second configuration information sent by the network device before the sending module 301 sends the UE mobility measurement report to the network device, where the second configuration information is used to indicate measurement and report a mobility state of the UE.

Optionally, in this embodiment of the present invention, the receiving module 302 is further configured to receive a conditional handover command sent by the network device before the sending module 301 sends the first information to the network device, where the conditional handover command is used to indicate N candidate cells for conditional handover, where N is a positive integer; the sending module 301 is specifically configured to send the first information to the network device if the N candidate cells do not include a cell matching the mobility state of the UE.

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.

The embodiment of the invention provides the UE, because the UE can inform the network equipment of the moving state of the UE by sending the first information to the network equipment under the condition that the UE is in the connected state, the network equipment can timely and accurately determine the moving state of the UE, so that the network equipment can instruct the UE to be switched to a cell (namely a first cell) matched with the moving state of the UE or instruct M candidate cells for switching the condition matched with the moving state of the UE to the UE according to the moving state of the UE, and the UE can be switched to the cell meeting the use requirement of the UE according to the instruction of the network equipment so as to ensure the service quality of the UE. For example, when the UE is in a high-speed moving state, the network device may instruct the UE to switch to a certain high-speed cell according to the moving state of the UE, or instruct the UE to indicate at least one high-speed candidate cell for conditional switching, so that the UE may switch to a high-speed cell meeting its use requirement in time, thereby ensuring the service quality of the UE in the high-speed moving state.

As shown in fig. 8, an embodiment of the invention provides a network device 400. The network device includes a receiving unit 401, a determining unit 402, and a transmitting unit 403. A receiving unit 401, configured to receive first information sent by a user equipment UE, where the first information is used to indicate a mobility state of the UE; a determining unit 402, configured to determine, after the receiving unit 401 receives the first information, a first cell or M candidate cells for conditional handover according to a moving state of the UE; a sending unit 403, configured to send a first handover command to the UE, where the first handover command is used to instruct handover to the first cell determined by the determining unit 402 or instruct M candidate cells determined by the determining unit 402, where M is a positive integer.

Optionally, in this embodiment of the present invention, the first information includes UE auxiliary information; the sending unit 403 is further configured to send, to the UE, first configuration information before the receiving unit 401 receives the first information sent by the UE, where the first configuration information is used to indicate that the UE assistance information is allowed to be sent.

Optionally, in this embodiment of the present invention, the first information includes a UE mobility measurement report; the sending unit 403 is further configured to send, to the UE, second configuration information before the receiving unit 401 receives the first information sent by the UE, where the second configuration information is used to indicate measurement and report a mobility state of the UE.

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 invention provides network equipment, and under the condition that UE is in a connected state, the network equipment can receive first information sent by the UE, so that the moving state of the UE is obtained, the network equipment can timely and accurately determine the moving state of the UE, the network equipment can instruct the UE to be switched to a cell (namely a first cell) matched with the moving state of the UE according to the moving state of the UE, or instruct the UE to be switched to M candidate cells for conditional switching matched with the moving state of the UE, and the UE can be switched to a cell meeting the use requirement of the UE according to the instruction of the network equipment, so that the service quality of the UE is ensured. For example, when the UE is in a high-speed moving state, the network device may instruct the UE to switch to a certain high-speed cell according to the moving state of the UE, or instruct the UE to indicate at least one high-speed candidate cell for conditional switching, so that the UE may switch to a high-speed cell meeting its use requirement in time, thereby ensuring the service quality of the UE in the high-speed moving state.

Fig. 9 is a hardware diagram of a UE implementing various embodiments of the present invention. As shown in fig. 9, 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. 9 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 send first information to the network device when the UE is in a connected state, where the first information is used to indicate a moving state of the UE; receiving a first switching command sent by network equipment, wherein the first switching command is used for indicating to switch to a first cell or indicating M candidate cells for conditional switching, and the first cell or the M candidate cells are determined according to the moving state of the UE; the processor 110 is configured to switch to a target cell according to a first handover command received by the radio frequency unit 101, where the target cell is a first cell or a cell of M candidate cells, and M is a positive integer.

It can be understood that, in the embodiment of the present invention, the sending module 301 and the receiving module 302 in the structural schematic diagram of the UE (for example, fig. 7) may be implemented by the radio frequency unit 101; the switching module 303 and the executing module 304 in the structural diagram of the UE may be implemented by the processor 110.

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. 9, 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. 9, 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. 10 is a hardware schematic diagram of a network device according to an embodiment of the present invention. As shown in fig. 10, the network device 500 may include: one or more processors 501, memory 502, and transceiver 503.

The transceiver 503 may be configured to receive first information sent by the UE, where the first information is used to indicate a mobility status of the UE; a processor 501, configured to determine a first cell or M candidate cells for conditional handover according to a mobility state of the UE after the transceiver 503 receives the first information; the transceiver 503 may be further configured to send a first handover command to the UE, where the first handover command is used to instruct handover to the first cell determined by the processor 501, or instruct M candidate cells determined by the processor 501, where M is a positive integer.

It should be noted that one of the two processors 501 in fig. 10 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. 10, the network device 500 includes two processors 501 for example.

It can be understood that, in the embodiment of the present invention, the receiving unit 401 and the sending unit 403 in the structural schematic diagram of the network device (for example, fig. 8) may be implemented by the transceiver 503; the determining unit 402 in the schematic structural diagram of the network device may be implemented by the processor 501.

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. 10, 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. 9 or the processor 501 shown in fig. 10, the computer program implements each process executed by the UE and the network device in the cell handover 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:

under the condition that the UE is in a connected state, sending first information to network equipment, wherein the first information is used for indicating the moving state of the UE;

receiving a first handover command sent by the network device, where the first handover command is used to instruct handover to a first cell or instruct M candidate cells for conditional handover, where the first cell or the M candidate cells are determined according to a moving state of the UE, and M is a positive integer;

and switching to a target cell according to the first switching command, wherein the target cell is the first cell or a cell in the M candidate cells.

2. The method of claim 1, wherein the mobility state of the UE is any one of: a high speed movement state, a non-high speed movement state, a movement state indicated by a speed level.

3. The method of claim 1, wherein the first information comprises at least one of: UE assistance information, UE mobility measurement report.

4. The method of claim 3, wherein the first information comprises UE assistance information;

the sending, to a network device, first information under the condition that the UE is in a connected state includes:

sending the UE assistance information to the network equipment when the UE enters a connected state from a non-connected state;

or,

transmitting the UE assistance information to the network device when the UE is in a high-speed moving state;

or,

transmitting the UE assistance information to the network device when the UE switches from a first mobility state to a second mobility state.

5. The method of claim 4, wherein prior to the sending the UE assistance information to the network device, the method further comprises:

receiving first configuration information sent by the network equipment, wherein the first configuration information is used for indicating whether the UE auxiliary information is allowed to be sent or not;

the sending the UE assistance information to the network device includes:

and if the first configuration information indicates that the UE auxiliary information is allowed to be sent, sending the UE auxiliary information to the network equipment.

6. The method of claim 4, wherein after the sending the UE assistance information to the network device, the method further comprises:

starting a timer, wherein the UE is prohibited from sending the auxiliary information with the same type as the UE auxiliary information to the network equipment before the timer is overtime.

7. The method according to any of claims 3 to 6, wherein the UE assistance information carries a first parameter indicating a mobility status of the UE.

8. The method of claim 3, wherein the first information comprises a UE mobility measurement report;

sending the UE mobile measurement report to the network equipment under the condition that the UE is in a connected state and meets a measurement reporting condition;

the measurement reporting condition comprises: the moving speed of the UE meets a target threshold, meets the trigger time of measurement reporting and meets the delay time of measurement reporting.

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

and receiving second configuration information sent by the network equipment, wherein the second configuration information is used for indicating measurement and reporting the mobile state of the UE.

10. The method of claim 1, wherein prior to sending the first information to the network device, the method further comprises:

receiving a conditional handover command sent by the network device, where the conditional handover command is used to indicate N candidate cells for conditional handover, where N is a positive integer;

the sending the first information to the network device includes:

and if the N candidate cells do not comprise the cell matched with the moving state of the UE, sending the first information to the network equipment.

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

receiving first information sent by User Equipment (UE), wherein the first information is used for indicating the moving state of the UE;

determining a first cell or M candidate cells for conditional handover according to the moving state of the UE, wherein M is a positive integer;

sending a first handover command to the UE, the first handover command being used to indicate handover to the first cell or to indicate the M candidate cells.

12. The method of claim 11, wherein the mobility state of the UE is any one of: a high speed movement state, a non-high speed movement state, a movement state indicated by a speed level.

13. The method of claim 11, wherein the first information comprises at least one of: UE assistance information, UE mobility measurement report.

14. The method of claim 13, wherein the first information comprises UE assistance information;

before the receiving the first information sent by the UE, the method further includes:

and sending first configuration information to the UE, wherein the first configuration information is used for indicating that the UE auxiliary information is allowed to be sent.

15. The method of claim 13 or 14, wherein the UE assistance information carries a first parameter, and wherein the first parameter is used for indicating a mobility status of the UE.

16. The method of claim 13, wherein the first information comprises a UE mobility measurement report;

and sending second configuration information to the UE, wherein the second configuration information is used for indicating measurement and reporting the mobile state of the UE.

17. The UE is characterized by comprising a sending module, a receiving module and a switching module;

the sending module is configured to send first information to a network device when the UE is in a connected state, where the first information is used to indicate a moving state of the UE;

the receiving module is configured to receive a first handover command sent by the network device after the sending module sends the first information, where the first handover command is used to instruct handover to a first cell or instruct M candidate cells for conditional handover, where the first cell or the M candidate cells are determined according to a moving state of the UE, and M is a positive integer;

the handover module is configured to handover to a target cell according to the first handover command received by the receiving module, where the target cell is the first cell or a cell of the M candidate cells.

18. A network device, characterized in that the network device comprises a receiving unit, a determining unit and a transmitting unit;

the receiving unit is configured to receive first information sent by a user equipment UE, where the first information is used to indicate a mobility state of the UE;

the determining unit is configured to determine, after the receiving unit receives the first information, a first cell or M candidate cells for conditional handover according to a moving state of the UE, where M is a positive integer;

the sending unit is configured to send a first handover command to the UE, where the first handover command is used to instruct to handover to the first cell determined by the determining unit or instruct to the M candidate cells determined by the determining unit.

19. 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 10.

20. 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 11 to 16.

21. A communication system comprising a user equipment, UE, according to claim 17, and a network device according to claim 18; or,

the communication system comprises the UE of claim 19, and the network device of claim 20.

22. 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 16.