CN113453295B

CN113453295B - Cell switching method, device and system

Info

Publication number: CN113453295B
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: 2023-09-19
Anticipated expiration: 2040-03-27
Also published as: CN113453295A

Abstract

The embodiment of the invention provides a cell switching method, equipment and a system, which relate to the technical field of communication and are used for solving the problems that the UE cannot be switched to a high-speed cell and the UE has a call drop or a radio link failure because the conventional network equipment cannot timely configure a switching command or a conditional switching command to the UE. The method comprises the following steps: under the condition that the UE is in a connected state, first information is sent to the network equipment, wherein the first information is used for indicating the mobile state of the UE; receiving a first switching command sent by network equipment, wherein the first switching command is used for indicating switching to a first cell or indicating M candidate cells subjected to conditional switching, and the first cell or the M candidate cells are determined according to the mobile state of UE; and switching to a target cell according to a first switching command, wherein the target cell is a 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, device and system

Technical Field

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

Background

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

Typically, when the UE is in a connected state, if the network device determines that the UE is in a high-speed mobile state, the network device may configure a handover command or a conditional handover (conditional handover, CHO) command for the UE, instructing 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 use requirement of the UE 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 mobile 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, i.e., the network device may not be able to determine whether the UE is in the high-speed moving state in time. In this way, the network device may not be able to timely configure the above-mentioned handover command or conditional handover command to the UE, so that the UE may not be able to handover to the high-speed cell, and further the UE may drop call or fail in radio link.

Disclosure of Invention

The embodiment of the application provides a cell switching method, equipment and a system, which are used for solving the problems 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 has a call drop or a radio link failure.

In order to solve the technical problems, the application is realized as follows:

in a first aspect, an embodiment of the present application 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 the network equipment, wherein the first information is used for indicating the mobile state of the UE; and receiving a first switching command sent by the network device, where the first switching command is used to instruct switching to a first cell, or instruct M candidate cells for conditional switching, where the first cell or the M candidate cells are determined according to a movement state of the UE; and switching to a target cell according to the first switching command, wherein the target cell is a first cell or a cell in M candidate cells, and M is a positive integer.

In a second aspect, an embodiment of the present application 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 mobile state of the UE; according to the mobile state of the UE, determining a first cell or M candidate cells subjected to conditional handover; and sending a first switching command to the UE, wherein the first switching command is used for indicating switching 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 handover module. The sending module is used for sending first information to the network equipment under the condition that the UE is in a connected state, wherein the first information is used for indicating the mobile state of the UE; the receiving module is used for receiving a first switching command sent by the network equipment after the sending module sends the first information, wherein the first switching command is used for indicating to switch to a first cell or indicating M candidate cells subjected to conditional switching, and the first cell or the M candidate cells are determined according to the mobile 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 a first cell or a cell in M candidate cells, and M is a positive integer.

In a fourth aspect, an embodiment of the present invention provides a network device, where the network device includes a receiving unit, a determining unit, and a transmitting unit. The mobile terminal comprises a receiving unit, a processing unit and a processing unit, wherein the receiving unit is used for receiving first information sent by User Equipment (UE), and the first information is used for indicating the mobile state of the UE; a determining unit, configured to determine, after the receiving unit receives the first information, a first cell or M candidate cells for conditional handover according to a mobility state of the UE; and the sending unit is used for sending a first switching command to the UE, wherein the first switching command is used for indicating to switch to the first cell determined by the determining unit or indicating M candidate cells determined by the determining unit, 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 on 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, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program is executed by the processor to implement 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 having stored thereon a computer program which, when executed by a processor, implements the steps of cell handover in the first or second aspects described above.

In the embodiment of the invention, the first information can be sent to the network equipment under the condition that the UE is in a connected state, and the first information is used for indicating the mobile state of the UE; and receiving a first switching command sent by the network device, where the first switching command is used to instruct switching to a first cell, or instruct M candidate cells for conditional switching, where the first cell or the M candidate cells are determined according to a movement state of the UE; and switching to a target cell according to the first switching command, wherein the target cell is a 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 a 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 instruct the UE to switch to a cell matched with the moving state of the UE (namely, a first cell) according to the moving state of the UE, or instruct the UE to instruct M candidate cells for the moving state matching condition switching of the UE to the UE, and the UE can further switch 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 mobile state, the network device may instruct the UE to switch to a certain high-speed cell according to the mobile state of the UE, or instruct the UE with at least one high-speed candidate cell for conditional switching, so that the UE may switch to a high-speed cell meeting the use requirement of the UE in time, thereby ensuring the service quality of the UE in the high-speed mobile state.

Drawings

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

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

fig. 3 is a schematic flow chart of a cell handover method according to an embodiment of the present application;

fig. 4 is a second flowchart of a cell handover method according to an embodiment of the present application;

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

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

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

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

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

fig. 10 is a schematic hardware diagram of a network device according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The term "and/or" herein is an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. The symbol "/" herein indicates that the associated object is or is a relationship, e.g., A/B indicates A or B.

The terms first and second and the like in the description and in the claims, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order of the objects. For example, the first configuration information and the second configuration information, etc., are used to distinguish between different configuration information, and are not used to describe a particular order of configuration information.

In embodiments of the invention, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In the description of the embodiments of the present invention, unless otherwise indicated, the meaning of "a plurality" means two or more, for example, a plurality of elements means two or more, elements, etc.

The terms/nouns involved in the embodiments of the present invention will first be described by way of example.

HSDN (high speed private network): refers to a network deployed along a road (e.g., along a railway, etc.) in order to ensure network service quality for UEs on vehicles (e.g., high-speed rail, etc.) that are traveling at higher speeds (e.g., high-speed rail class).

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

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

The movement status of the speed class indication: refers to a speed class, indicated movement status, 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 condition switching flow which is introduced in order to avoid the failure of the UE to switch cells caused by the fact that the UE cannot receive the related message of the switching command of the source node after the channel condition of the source cell is deteriorated.

The flow of conditional switching is exemplarily described below 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 transmits 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.

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

Step 4: the UE evaluates whether the candidate cells (i.e., nodes) meet a condition, and selects a target cell (i.e., a target node) for handover (evaluation of the condition for the candidate cells and select one target for handover) after the condition is met.

Step 5: the UE initiates a random access procedure at the selected target cell (contention free or RACH-less access or contention based RACH).

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

Step 7: the source node sends a cancel conditional switch command to the other target nodes (conditional HO cancellation).

Step 8: the other target node sends a conditional handover cancel confirm command to the source node (conditional HO cancellation confirmation).

The embodiment of the invention provides a cell switching method, a cell switching device and a cell switching 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 mobile state of the UE; and receiving a first switching command sent by the network device, where the first switching command is used to instruct switching to a first cell, or instruct M candidate cells for conditional switching, where the first cell or the M candidate cells are determined according to a movement state of the UE; and switching to a target cell according to the first switching command, wherein the target cell is a 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 a 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 instruct the UE to switch to a cell matched with the moving state of the UE (namely, a first cell) according to the moving state of the UE, or instruct the UE to instruct M candidate cells for the moving state matching condition switching of the UE to the UE, and the UE can further switch 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 mobile state, the network device may instruct the UE to switch to a certain high-speed cell according to the mobile state of the UE, or instruct the UE with at least one high-speed candidate cell for conditional switching, so that the UE may switch to a high-speed cell meeting the use requirement of the UE in time, thereby ensuring the service quality of the UE in the high-speed mobile 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, a wireless communication system may include a network device 01 and a UE 02. Wherein a connection may be established between the network device 01 and the UE 02. It is understood that the network device 01 and the UE 02 may be a wireless connection.

Alternatively, in an embodiment of the present invention, the UE is a device that provides voice and/or data connectivity to the user, a handheld device with wired/wireless connection capabilities, or other processing device connected to a wireless modem. The UE may communicate with one or more core network devices via a radio access network (radio access network, RAN). The UE may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, or a portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile device that exchanges voice and/or data with the RAN, e.g., a personal communication service (personal communication service, PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA) or the like. The UE may also be referred to as a user agent (UE), a UE, or the like.

In the embodiment of the invention, the network equipment is equipment which is deployed in the RAN and used for providing wireless communication functions for the UE. In the embodiment of the invention, the network equipment can be a base station, and the base station can comprise macro base stations, micro base stations, relay stations, access points and the like in various forms. In systems employing different radio access technologies, the names of base station capable devices may vary. For example, in a 5G system, it may be referred to as a 5G base station (gNB); in a fourth Generation wireless communication (4-Generation, 4G) system, such as a long term evolution (long term evolution, LTE) system, it may be referred to as an evolved Node B (eNB); in a third generation mobile communication (3G) system, it may be called 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 moving speed estimated value of the UE. In this manner, in the case that the UE is in a connected state, the UE may send a message (for example, the first message in the embodiment of the present invention) to the network device, so as to inform the network device of the mobility state of the UE. After the network device receives this information, the network device may determine that the UE requests a handover to a cell matching the mobility state of the UE, or request the network device to configure the UE with candidate cells for conditional handovers matching the mobility state of the UE. In this way, the network device may send a handover command to the UE, instruct the UE to handover to a cell matching the mobility state of the UE, or send a conditional handover command to the UE, so as to instruct the UE to 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 (for example, the first handover command in the embodiment of the present invention) sent by the network device, and further may ensure the service quality of the UE.

In the embodiment of the present invention, the cell matched with the mobile state of the UE may be specifically determined according to the mobile state of the UE. For example, when the movement state of the UE is a high-speed movement state, the cell matching the movement state of the UE may be a high-speed cell; when the movement state of the UE is a non-high speed movement state, a cell matching the movement 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 a wireless communication system as shown in fig. 2, and may include S201 to S206 described below.

S201, under the condition that the UE is in a connected state, the UE sends first information to the 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 invention, the UE can send the first information to the network equipment under the condition that the UE is in a connected state, and after the network equipment receives the first information sent by the UE, the network equipment can determine the cell matched with the mobile state of the UE according to the mobile state of the UE indicated by the first information.

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

Optionally, in the embodiment of the present invention, the movement 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 class.

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 perform UE movement speed estimation according to measurement configuration sent by the network device. As such, after the UE receives the measurement configuration, the UE may make UE movement speed estimation.

Wherein the measurement configuration may be a high speed movement measurement (high speed measurement) configuration.

Optionally, in the embodiment of the present invention, before entering the connection state, the UE may perform UE movement speed estimation; or after entering a connection state, carrying out UE movement speed estimation; or before entering the connection state, the mobile speed estimation is performed, and after entering the connection state, the mobile speed estimation of the UE is performed. The method can be specifically 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, the protocol agrees (or the network device configures, or the network device indicates) with a speed threshold. In particular, the speed threshold may be a threshold for a high speed movement state.

For the first implementation described above, the UE may determine the movement speed of the UE (in particular, the estimated movement speed of the UE) by measuring the estimation, and then compare the movement speed with a threshold of the high-speed movement state. If the movement speed is greater than or equal to the threshold of the high speed movement state, the UE may determine that the movement state of the UE is the high speed movement state; if the movement speed is less than the threshold of the high speed movement state, the UE may determine that the movement state of the UE is a non-high speed movement state.

It will be appreciated that for the first implementation described above, 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 measurement estimation result of the UE on the moving speed is greater than or equal to 200km/h, the UE may determine that the moving state of the UE is the high-speed moving state; when the measurement estimation result of the UE on the movement speed thereof is less than 200km/h, the UE may determine that the movement state of the UE is a non-high speed movement state.

In actual implementation, when the UE determines the movement state of the UE, the UE may also determine other conditions than the movement speed of the UE. The method can be specifically determined according to actual use requirements, and the embodiment of the application is not limited.

Optionally, in the embodiment of the present application, in a second implementation, the protocol agrees (or the network device configures, or the network device indicates) with a plurality of speed thresholds.

The plurality of speed thresholds may include a first speed threshold and a second speed threshold, for example.

It should be noted that the embodiment of the present application is only exemplified by the above-mentioned multiple speed thresholds including two speed thresholds, which should 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 specifically determined according to practical requirements, and the embodiment of the present application is not limited.

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

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

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

For the relation between the UE movement speed, speed threshold, and speed class, see table 1 below.

TABLE 1

Speed grade	UE movement speed
		0	< high speed threshold 1
1	More than or equal to the high-speed threshold 1 and less than the high-speed threshold 2
		2	Not less than high speed threshold 2

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

Illustratively, assume that the first speed threshold is 200km/h and the second speed threshold is 350km/h. Then, the UE may determine that the moving speed level of the UE is a first speed level when the measurement and evaluation result of the moving speed value thereof by the UE is less than 200km/h, and may determine that the moving speed level of the UE is a second speed level when the measurement and evaluation result of the moving speed value thereof by the UE is greater than or equal to 200km/h and less than 350 km/h; when the measurement and evaluation result of the UE on the moving speed value thereof is 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 invention, the moving state of the UE can be indicated in different modes, such as direct indication of the moving state or speed level indication, so that the UE can send the first information meeting the actual use requirement to the network equipment, and the content of the first information sent by the UE can be flexible.

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

It may be appreciated that in the embodiment of the present invention, the first information may include UE assistance information, may also include UE mobile measurement reports, and may also include UE assistance information and UE mobile measurement reports.

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

S203, the network equipment determines M candidate cells of the first cell or the conditional handover according to the mobile state of the UE.

Wherein M is a positive integer.

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

In the 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, for the UE, a candidate cell for conditional switching matching the mobility state of the UE. The network device may determine a cell (i.e. the first cell) matching the mobility state of the UE, or determine M candidate cells (hereinafter referred to as M candidate cells) for the conditional handover according to the mobility state of the UE.

In this embodiment of the present invention, the M candidate cells may include candidate cells that match the mobility state of the UE.

Optionally, in the 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 described above) and then instruct the UE to switch to the high-speed cell. Alternatively, the network device may determine the high-speed candidate cells for the conditional handover, thereby determining M candidate cells for the conditional handover, and then indicate the M candidate cells to the UE.

Optionally, in the 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 the 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 the 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 UE of the M candidate cells. 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, the UE may be handed over directly to the first cell (i.e., the target cell) after the UE receives the first handover command. When the first handover command indicates the M candidate cells for conditional handover to the UE, the UE may measure the M candidate cells after receiving the first handover command, select a cell matching the mobility state of the UE from the M candidate cells, and then the UE may handover to the cell.

Optionally, in the 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 handover directly to the first cell.

Optionally, in the 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, according to the movement state thereof, a cell matching the movement state thereof from the M candidate cells to perform cell handover.

For example, when the movement state of the UE is a high-speed movement state, the UE may measure and estimate a high-speed cell matching the M candidate cells from among the M candidate cells, thereby switching to the high-speed cell.

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

Optionally, in the embodiment of the present invention, when the content (UE assistance information and/or UE mobile measurement report) included in the first information is different, the manner in which the UE sends the first information to the network device may be different.

The following describes two cases of the first information including UE assistance information and the first information including UE mobile measurement report, respectively.

Case one: the first information includes UE assistance information.

In the first case, 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 auxiliary information for example to perform an explanation, and for the case that the first information includes the UE auxiliary information and other information, an implementation manner is similar to that of the case that the first information is the UE auxiliary 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 auxiliary information may be a radio resource control (radio resource control, RRC) message.

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

The UE assistance information may be high-speed priority information.

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

Alternatively, in the embodiment of the present invention, the first parameter may be a high speed priority (preferential high speed) parameter.

It will be appreciated that in embodiments of the present invention, "preferredHighSpeed" may be a parameter name.

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

UE Assistance Information-vxxx-IEs: =sequence {// UE assistance information

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

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

Also for example, in case the UE leaves the high-speed moving state during the connected state, the UE may set the preferredHighSpeed parameter to false when the UE transmits UE assistance information carrying the preferredHighSpeed parameter to the network device.

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

Alternatively, for the above case one, the occasions when the UE sends the first information to the network device (specifically, may be sending the UE auxiliary information to the network device) may include three possible occasions, namely, a first occasion, a second occasion and a third occasion. These three opportunities are each exemplified below.

First time: in the case where the UE enters the connected state from the disconnected state, the UE may send UE assistance information to the network device.

It can be appreciated that, for the first occasion, after the UE enters the connected state, the UE may send UE auxiliary information to the network device without determining whether the mobility state of the UE is a high-speed mobility state. That is, the UE transmits UE assistance information to the network device regardless of the movement state of the UE.

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

It can be appreciated that for occasion two, when the UE is in a connected state, the UE transmits UE assistance information to the network device only when it is determined that the mobility state of the UE is a 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.

It should be noted that, for the second occasion, the purpose of the UE transmitting the UE auxiliary information is: informing the network device that the UE is prone to high speed (high speed) or configuration of high speed movement state (e.g. handover to a high speed cell, or configuration of a high speed cell in a conditional handover command, etc.).

And (3) timing three: in the case of a handover of the UE from the first mobility state to the second mobility state, the UE may send UE assistance information to the network device.

It will be appreciated that for occasion three, the UE may send UE assistance information to the network device in the event that the mobility state of the UE changes.

Optionally, in the embodiment of the present application, 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 the first speed level, and the second moving state is a moving state indicated by the second speed level; or the first movement state is a movement state indicated by a second speed level, the second movement state is a movement state indicated by a third speed level, and so on. The method can be specifically determined according to actual use requirements, and the embodiment of the application is not limited.

It should be noted that, in the first case (where the first information includes UE auxiliary information), the embodiment of the present application only uses the three kinds of occasions (the first occasion, the second occasion, and the third occasion) as examples, and the occasions when the UE sends the UE auxiliary information to the network device are described as examples, which does not limit the present application. In actual implementation, the timing of sending the UE auxiliary information to the network device by the UE may be any other possible timing, and may be specifically determined according to the actual use requirement, which is not limited by the embodiment of the present application.

Optionally, for the above case one, before the UE sends the UE assistance information to the network device, the network device may indicate whether to allow the UE to send the UE assistance information through configuration information (for example, the first configuration information in the embodiment of the present invention). 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 (e.g., the timing satisfying the above three timings). 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, in conjunction with 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. The above S201 may be specifically implemented by S201a described below.

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

The first configuration information is used for indicating whether to allow transmission of the UE auxiliary information.

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

S209, the UE determines whether the first configuration information indicates that transmission of UE assistance information is allowed.

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

In the 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 UE auxiliary information, the UE may send UE auxiliary 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 UE auxiliary information sent by the UE.

Alternatively, for case one above (the first information includes UE assistance information), the UE may start a timer after the UE transmits the UE assistance information to the network device. In this way, the UE can be prevented from frequently transmitting the same type of auxiliary information as the UE auxiliary information to the network device.

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

And S210, the UE starts a timer, wherein the UE is forbidden to send auxiliary information with the same type as the auxiliary information of the UE to the network equipment before the timer is overtime.

It will be appreciated that after the UE starts the timer, the UE may still send assistance information to the network device of a different type than the UE assistance information, e.g. overheating assistance information of the UE, etc.

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

In the embodiment of the present invention, the above-mentioned "after the UE sends the UE auxiliary information to the network device" may specifically be: when the RRC submits an RRC message containing UE assistance information to the lower layer.

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

In the embodiment of the invention, because the UE is forbidden to send the UE auxiliary information to the network equipment before the timer is overtime, the UE can avoid resource waste caused by frequently sending (or reporting) 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.

And a second case: the first information includes a UE mobile measurement report.

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

In the embodiment of the present invention, the first information is taken as an example of the UE mobile measurement report, and for the case that the first information includes the UE mobile measurement report and other information, the implementation manner is similar to that of the case that the first information is the UE mobile measurement report, so that repetition is avoided, and the embodiment of the present invention is not repeated.

Alternatively, for the above second case, the timing at which the UE sends the first information to the network device (specifically, may be sending the UE mobile measurement report to the network device) may be the target timing described below. The target timing is exemplarily described below.

Target opportunity: in the case that the UE is in a connected state and the measurement report condition is satisfied, the UE may send a UE mobile measurement report to the network device.

The measurement report condition may include: the moving speed of the UE meets the target gate, and meets the measurement report trigger time (time to trigger) and the measurement report delay time (hysteresis).

It may be appreciated that, in the embodiment of the present invention, the UE mobile 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, the moving speed of the UE satisfies the target threshold (specifically, the moving speed value of the UE may be that the moving speed of the UE satisfies the target threshold) may be that the moving speed of the UE is greater than the target threshold. The target gate may be a high speed-threshold (high speed-threshold).

Optionally, in the embodiment of the present invention, the target gate may be configured for the network device to the UE.

It should be noted that, for the second case, the timing of sending the UE mobile measurement report to the network device by the UE may be any other possible timing, and may be specifically determined according to the actual use requirement, which is not limited by the embodiment of the present invention.

Optionally, for the second case (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 measurement configuration information (for example, the second configuration information in the embodiment of the present invention) to the UE, to instruct the UE to measure and report the mobility state of the UE.

As shown in fig. 5, in connection with fig. 3, the cell handover method provided in the embodiment of the present invention may further include S211 and S212 described below, before S201. The above S201 may be specifically realized 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 the mobility state of the UE.

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

S201b, in the case that the UE is in a connected state, the UE sends a UE mobile measurement report to the network device.

In the embodiment of the invention, before the UE sends the UE mobile measurement report to the network equipment, the network equipment can instruct the UE to measure and report the mobile state of the UE by sending the second configuration information to the UE.

Alternatively, in the embodiment of the present invention, the second configuration information may be high-speed mobile measurement configuration information.

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

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: UE movement speed, UE high speed movement status.

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

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

For example, as shown in table 2 below, the movement speed (denoted as a) of the UE may include 6 gears. Wherein, the gear '0' represents that 0 < a < 100km/h; gear "1" represents 100km/h < a < 200km/h; gear "2" represents 200km/h < a < 300km/h; gear "3" represents 300km/h < a < 400km/h; gear "4" represents 400km/h < a < 500km/h; gear "5" represents 500 km/h.ltoreq.a.

TABLE 2

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

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

In the embodiment of the present invention, for a description of how the UE determines whether the UE enters the high-speed moving state, specific reference may be made to the detailed description of the moving state of the UE in the above embodiment, and for avoiding repetition, the description is omitted here.

Optionally, in the 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 a cell matching the mobility state of the UE is not included in the conditional handover command, the UE may send the first information to the network device, to request the network device to configure a candidate cell for conditional handover matching the mobility state of the UE for the UE, or request the network device to instruct the UE to switch to a cell matching the mobility state of the UE.

As shown in fig. 6 in conjunction with fig. 3, the cell handover method provided in the embodiment of the present invention may further include S213 and S214 described below, before S201.

S213, the UE receives a 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 a cell matching the mobility state of the UE.

In the 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 mobile state measurement estimation of the UE, if the UE determines that the N candidate cells indicated in the conditional handover command do not include a cell matching with the mobile state of the UE, the UE may send the first information to the network device, so that the network device may be requested to configure the UE with a cell matching with the mobile state of the UE, or request to switch to a cell matching with the mobile state of the UE.

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 mobility state of the UE is a high-speed mobility state, the N candidate cells do not include any high-speed cells, 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 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.

In the embodiment of the present invention, the cell handover methods shown in the foregoing drawings are all illustrated by way of example in conjunction with one of the drawings in the embodiment of the present invention. In specific implementation, the cell switching method shown in each of the foregoing drawings may also be implemented in combination with any other drawing that may be illustrated in the foregoing embodiments, and will not be repeated herein.

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. The sending module 301 may be configured to send, when the UE is in a connected state, first information to a network device, where the first information is used to indicate a mobility state of the UE; a receiving module 302, configured to receive, after the first information is sent by the sending module 301, a first handover command sent by a 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 mobility state of the UE; the switching module 303 may be configured to switch to a target cell according to the first switching command received by the receiving module 302, where the target cell is a first cell or a cell of M candidate cells, and M is a positive integer.

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

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

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

Optionally, in the embodiment of the present invention, the receiving module 302 is further configured to receive, before the sending module 301 sends the UE auxiliary information to the network device, first configuration information sent by 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 auxiliary information to the network device if the first configuration information indicates that the UE auxiliary information is allowed to be sent.

Optionally, in an embodiment of the present invention, as shown in fig. 7, the UE 300 further includes an execution module 304. The execution module 304 may be configured to start a timer after the sending module 301 sends the UE auxiliary information to the network device, where the UE is prohibited from sending auxiliary information with the same type as the UE auxiliary information to the network device before the timer expires.

Optionally, in the embodiment of the present invention, the UE auxiliary information carries a first parameter, where the first parameter is used to indicate a mobility state of the UE.

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

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 the embodiment of the present invention, the receiving module 302 is further configured to receive, before the sending module 301 sends the first information to the network device, a conditional switching command sent by the network device, where the conditional switching command is used to indicate N candidate cells for conditional switching, and 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 that matches the mobility state of the UE.

The UE provided by the embodiment of the present invention can implement each process executed by the UE in the embodiment of the cell handover method, and can achieve the same technical effect, so that repetition is avoided, and no further description is provided here.

The embodiment of the invention provides a 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 a 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 switch to a cell matched with the moving state of the UE (namely a first cell) according to the moving state of the UE, or instruct the UE to instruct M candidate cells for conditional switching matched with the moving state of the UE to the UE, and the UE can switch 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 mobile state, the network device may instruct the UE to switch to a certain high-speed cell according to the mobile state of the UE, or instruct the UE with at least one high-speed candidate cell for conditional switching, so that the UE may switch to a high-speed cell meeting the use requirement of the UE in time, thereby ensuring the service quality of the UE in the high-speed mobile state.

As shown in fig. 8, an embodiment of the present invention provides a network device 400. The network device comprises 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 mobility state of the UE; a transmitting unit 403, configured to transmit 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 an 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 transmission of UE auxiliary information is allowed.

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

The network device provided by the embodiment of the invention can realize each process executed by the network device in the embodiment of the cell switching method, and can achieve the same technical effect, and in order to avoid repetition, the description is omitted here.

The embodiment of the invention provides a network device, wherein the network device can receive first information sent by UE under the condition that the UE is in a connection state, so that the mobile state of the UE is known, and thus the network device can timely and accurately determine the mobile state of the UE, and the network device can instruct the UE to switch to a cell matched with the mobile state of the UE (namely a first cell) according to the mobile state of the UE, or instruct the UE to instruct M candidate cells for conditional switching matched with the mobile state of the UE, and further instruct the UE to switch to a cell meeting the use requirement according to the instruction of the network device, so as to ensure the service quality of the UE. For example, when the UE is in a high-speed mobile state, the network device may instruct the UE to switch to a certain high-speed cell according to the mobile state of the UE, or instruct the UE with at least one high-speed candidate cell for conditional switching, so that the UE may switch to a high-speed cell meeting the use requirement of the UE in time, thereby ensuring the service quality of the UE in the high-speed mobile state.

Fig. 9 is a hardware schematic 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, and the UE may include more or fewer components than shown, or may combine certain components, or may have a different arrangement of components. In the embodiment of the 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 mobility state of the UE; and receiving a first switching command sent by the network device, where the first switching command is used to instruct switching to a first cell, or instruct M candidate cells for conditional switching, where the first cell or the M candidate cells are determined according to a movement state of the UE; the processor 110 is configured to switch to a target cell according to a first switching command received by the radio frequency unit 101, where the target cell is the 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 transmitting module 301 and the receiving module 302 in the structural schematic diagram (for example, fig. 7) of the UE may be implemented by the radio frequency unit 101; the switching module 303 and the executing module 304 in the schematic 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 configured to receive and send information or signals during a call, specifically, receive downlink data from a base station, and then process the received downlink data with the processor 110; and, the uplink data is transmitted to the base station. Typically, the 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 may also communicate with networks and other devices through a wireless communication system.

The UE 100 provides wireless broadband internet access to users, such as helping users to email, browse web pages, access streaming media, etc., through the network module 102.

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 (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the UE 100. The audio output unit 103 includes a speaker, a buzzer, a receiver, and the like.

The input unit 104 is used for receiving an audio or video signal. The input unit 104 may include a graphics processor (graphics processing unit, GPU) 1041 and a microphone 1042, the graphics processor 1041 processing image data of still pictures 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 graphics 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. Microphone 1042 may receive sound and be capable of processing such sound into audio data. The processed audio data may be converted into a format output that can be transmitted to the mobile communication base station via the radio frequency unit 101 in the case of a telephone call mode.

The UE 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and the proximity sensor can turn off the display panel 1061 and/or the backlight when the UE 100 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (typically three axes), and can detect the gravity and direction when stationary, and can be used for recognizing the gesture of the UE 100 (such as horizontal-vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer, knocking), and the like; the sensor 105 may further include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which are not described 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 (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. The touch panel 1071, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on the touch panel 1071 or thereabout using any suitable object or accessory such as a finger, stylus, etc.). The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch azimuth 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 detection device, converts the touch information into touch point coordinates, and sends the touch point coordinates to the processor 110, and receives and executes commands sent by the processor 110. Further, the touch panel 1071 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 107 may include other input devices 1072 in addition to the touch panel 1071. In particular, 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 operation is transmitted to the processor 110 to determine the type of touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of touch event. Although in fig. 9, the touch panel 1071 and the display panel 1061 are two independent components for implementing the input and output functions of the UE 100, in some embodiments, the touch panel 1071 may be integrated with the display panel 1061 to implement the input and output functions of the UE 100, which is not limited herein.

The interface unit 108 is an interface through which an external device is connected to the UE 100. For example, the external devices may include a wired or wireless headset port, an external power (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 (e.g., data information, power, etc.) from an external device 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 the external device.

Memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area that may store an operating system, application programs required for at least one function (such as a sound playing function, an image playing function, etc.), and a storage data area; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, 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, and 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 invoking 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 that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily 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 source 111 (e.g., a battery) for powering the various components, and optionally, the power source 111 may be logically connected to the processor 110 by a power management system, thereby implementing functions such as charge, discharge, and power consumption management by the power management system.

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

It will be appreciated 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 above embodiment.

Optionally, the embodiment of the present invention further provides a UE, including a processor 110 and a memory 109 as shown in fig. 9, and a computer program stored in the memory 109 and capable of running on the processor 110, where the computer program when executed by the processor 110 implements each process of the above embodiment of the cell handover method, and the process can achieve the same technical effect, so that repetition is avoided and redundant description is omitted here.

Fig. 10 is a schematic hardware 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 a 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 state of the UE; a processor 501, configured to determine, after the transceiver 503 receives the first information, a first cell or M candidate cells for conditional handover according to a mobility state of the UE; 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 processor 501 of the two processors 501 in fig. 10 is indicated by a dashed line to indicate that the number of processors 501 in the network device 500 may be one or more. In fig. 10, the network device 500 includes two processors 501 as an example.

It can be appreciated that, in the embodiment of the present invention, the receiving unit 401 and the transmitting 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 above-mentioned network device may be implemented by the above-mentioned processor 501.

In an embodiment of the invention, one or more processors 501, memory 502, and transceiver 503 may be interconnected. Wherein the one or more processors 501 may be baseband processing units (building base band unit, BBU), which may also be referred to as indoor baseband processing units; the transceiver 503 may be a remote radio unit (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, which are not shown, and are not described herein.

It will be appreciated 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, the embodiment of the present invention further provides a network device, including a processor 501 shown in fig. 10, a memory 502, and a computer program stored in the memory 502 and capable of running on the processor 501, where the computer program when executed by the processor 501 implements each process of the embodiment of the method, and the process can achieve the same technical effect, so that repetition is avoided and redundant description is omitted.

The embodiment of the present invention further provides a computer readable storage medium, on which a computer program is stored, where the computer program, when executed by the processor 110 shown in fig. 9 or the processor 501 shown in fig. 10, implements each process executed by the UE and the network device in the foregoing embodiment of the cell handover method, and the same technical effects are achieved, so that repetition is avoided and no further description is given here. The computer readable storage medium may include, among others, read-only memory (ROM), random access memory (random access memory, RAM), magnetic or optical disks, 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising several instructions for causing a terminal (which may be a mobile phone, a computer, an air conditioner, or a network device, etc.) to perform the method of the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A cell handover method, applied to a user equipment UE, the method comprising:

transmitting first information to network equipment when the UE is in a connected state, wherein the first information is used for indicating the mobile state of the UE;

receiving a first switching command sent by the network equipment, wherein the first switching command is used for indicating M candidate cells for conditional switching, the M candidate cells are determined according to the mobile state of the UE, and M is a positive integer;

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

the first information includes any one of the following: UE assistance information and UE mobile measurement reports, UE assistance information;

The first information includes UE assistance information including: high-speed priority information; the high-speed priority information is used for informing the network equipment of the configuration of the UE which tends to be in a high-speed moving state;

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

transmitting the UE auxiliary information to the network equipment under the condition that the UE enters a connection state from a non-connection state;

or alternatively, the process may be performed,

transmitting the UE auxiliary information to the network equipment under the condition that the UE is in a high-speed moving state;

or alternatively, the process may be performed,

and transmitting the UE auxiliary information to the network equipment under the condition that the UE is switched from the first mobile state to the second mobile state.

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, and a movement state indicated by a speed class.

3. The method of claim 1, 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.

4. The method of claim 1, wherein after the sending the UE assistance information to the network device, the method further comprises:

and starting a timer, wherein before the timer is overtime, the UE is forbidden to send auxiliary information with the same type as the auxiliary information of the UE to the network equipment.

5. The method of claim 1, 3 or 4, wherein the UE assistance information carries a first parameter, the first parameter being used to indicate a mobility state of the UE.

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

receiving a conditional switching command sent by the network equipment, wherein the conditional switching command is used for indicating N candidate cells for conditional switching, and 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 cells matched with the mobile state of the UE, sending the first information to the network equipment.

7. A method of cell switching, for use with a network device, the method comprising:

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

according to the mobile state of the UE, M candidate cells for conditional switching are determined, wherein M is a positive integer;

transmitting a first handover command to the UE, the first handover command being for indicating the M candidate cells;

the UE assistance information includes: high-speed priority information; the high-speed priority information is used for informing the network equipment of the configuration of the UE which tends to be in a high-speed moving state;

the UE auxiliary information is sent to the network equipment under the condition that the UE enters a connection state from a non-connection state;

or alternatively, the process may be performed,

the UE auxiliary information is sent to the network equipment under the condition that the UE is in a high-speed moving state;

or alternatively, the process may be performed,

and the UE auxiliary information is sent to the network equipment when the UE is switched from the first mobile state to the second mobile state.

8. The method of claim 7, wherein the mobility state of the UE is any one of: a high speed movement state, a non-high speed movement state, and a movement state indicated by a speed class.

9. The method of claim 7, 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 permission to send the UE auxiliary information.

10. The method according to claim 7 or 9, wherein the UE assistance information carries a first parameter, the first parameter being used to indicate a mobility state of the UE.

11. A user equipment UE, wherein the UE includes 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 mobility 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 M candidate cells for conditional handover, where the M candidate cells are determined according to a movement state of the UE, and M is a positive integer;

the switching module is configured to switch to a target cell according to the first switching command received by the receiving module, where the target cell is a cell in the M candidate cells;

the sending module is specifically configured to:

or alternatively, the process may be performed,

12. 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 mobile state of the UE;

the determining unit is configured to determine, after the receiving unit receives the first information, M candidate cells for conditional handover according to a movement 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 the M candidate cells determined by the determining unit;

or alternatively, the process may be performed,

13. A user equipment, UE, comprising a processor, a memory and a computer program stored on the memory and executable on the processor, which when executed by the processor realizes the steps of the cell handover method according to any of claims 1 to 6.

14. A network device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the cell handover method according to any of claims 7 to 10.

15. A communication system comprising a user equipment UE according to claim 11 and a network device according to claim 12; or alternatively, the process may be performed,

the communication system comprising the UE of claim 13 and the network device of claim 14.

16. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the cell handover method according to any of claims 1 to 10.