CN112203334B - Cell switching method and device - Google Patents

Cell switching method and device Download PDF

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Publication number
CN112203334B
CN112203334B CN202011233187.1A CN202011233187A CN112203334B CN 112203334 B CN112203334 B CN 112203334B CN 202011233187 A CN202011233187 A CN 202011233187A CN 112203334 B CN112203334 B CN 112203334B
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cell
target cell
moving speed
network device
information
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CN112203334A (en
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杨艳
苗守野
钟志刚
冯毅
潘翔
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835—Determination of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data

Abstract

The embodiment of the invention provides a cell switching method and a cell switching device, relates to the technical field of communication, and can improve the rationality of target cell determination and improve the success rate of cell switching. The method comprises the following steps: the network equipment receives PUCCH information sent by UE; the network device determining whether a movement speed of the UE is greater than or equal to a movement speed threshold; the network device determines a first target cell from a plurality of cells if the moving speed of the UE is greater than or equal to the moving speed threshold; the network device sends first PDCCH information to the UE, wherein the first PDCCH information comprises identification information of the first target cell, and the first PDCCH information is used for indicating the UE to be switched from a source cell to the target cell.

Description

Cell switching method and device
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a cell switching method and a cell switching device.
Background
Currently, a User Equipment (UE) may be handed over from a certain cell (which may be understood as a source cell) to another cell (e.g. a target cell). Specifically, the UE may determine signal strength of each of a plurality of cells (including a source cell), and when the UE determines that the signal strength of one of the cells is greater than the signal strength of the source cell, may determine that the cell is a target cell, and perform handover from the source cell to the target cell.
However, in the above method, the process of determining the target cell by the UE based on the signal qualities of the multiple cells may not be reasonable enough, for example, the target base station (i.e., the base station corresponding to the target cell) may not be able to provide service for the UE. Thus, the UE may not establish a communication connection with the target base station, that is, the UE fails to handover from the source cell to the target cell, and the UE cannot normally communicate.
Disclosure of Invention
The embodiment of the invention provides a cell switching method and a cell switching device, which can improve the rationality of target cell determination and improve the success rate of cell switching.
In a first aspect, an embodiment of the present invention provides a cell handover method, including: a network device receives Physical Uplink Control Channel (PUCCH) information sent by a UE, where the PUCCH information includes a moving speed of the UE; the network device determining whether a movement speed of the UE is greater than or equal to a movement speed threshold; when the moving speed of the UE is greater than or equal to the moving speed threshold, the network device determines a first target cell from a plurality of cells, where the first target cell is a cell with the largest Reference Signal Receiving Power (RSRP) in at least one first cell, the at least one first cell is a cell with a number of Transmit and Receive (TR) components less than or equal to a TR component number threshold in the plurality of cells, and the plurality of cells are cells in a neighbor list corresponding to the UE; the network device sends first Physical Downlink Control Channel (PDCCH) information to the UE, where the first PDCCH information includes identification information of the first target cell, and the first PDCCH information is used to instruct the UE to switch from a source cell to the first target cell.
In a second aspect, an embodiment of the present invention provides a cell handover method, including: the UE determines the moving speed of the UE; the UE sends PUCCH information to network equipment, wherein the PUCCH information comprises the moving speed of the UE; the UE receives PDCCH information sent by the network device, where the PDCCH information includes identification information of a target cell, and the PDCCH information is used to instruct the UE to switch from a source cell to the target cell.
In a third aspect, an embodiment of the present invention provides a network device, including: the device comprises a receiving module, a determining module and a sending module; the receiving module is configured to receive PUCCH information sent by the UE, where the PUCCH information includes a moving speed of the UE; the determining module is configured to determine whether a moving speed of the UE is greater than or equal to a moving speed threshold; the determining module is further configured to determine a first target cell from multiple cells when the moving speed of the UE is greater than or equal to the moving speed threshold, where the first target cell is a cell with a largest RSRP among at least one first cell, the at least one first cell is a cell with a number of TR components smaller than or equal to the number of TR components threshold among the multiple cells, and the multiple cells are cells in a neighbor list corresponding to the UE; the sending module is configured to send first PDCCH information to the UE, where the first PDCCH information includes identification information of the first target cell, and the first PDCCH information is used to instruct the UE to switch from a source cell to the first target cell.
In a fourth aspect, an embodiment of the present invention provides a UE, including: the device comprises a determining module, a sending module and a receiving module; the determining module is configured to determine a moving speed of the UE; the sending module is configured to send PUCCH information to the network device, where the PUCCH information includes a moving speed of the UE; the receiving module is configured to receive PDCCH information sent by the network device, where the PDCCH information includes identification information of a target cell, and the PDCCH information is used to instruct the UE to switch from a source cell to the target cell.
In a fifth aspect, an embodiment of the present invention provides another network device, including: a processor, a memory, a bus, and a communication interface; the memory is used for storing computer execution instructions, the processor is connected with the memory through the bus, and when the network device runs, the processor executes the computer execution instructions stored in the memory, so that the network device executes the cell switching method provided by the first aspect.
In a sixth aspect, an embodiment of the present invention provides another UE, including: a processor, a memory, a bus, and a communication interface; the memory is used for storing computer execution instructions, the processor is connected with the memory through the bus, and when the UE runs, the processor executes the computer execution instructions stored in the memory, so that the UE executes the cell switching method provided by the second aspect.
In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, which includes a computer program and when the computer program runs on a computer, the computer is caused to execute a cell handover method provided in the foregoing first aspect.
In an eighth aspect, an embodiment of the present invention provides a computer-readable storage medium, which includes a computer program, and when the computer program runs on a computer, the computer is caused to execute a cell handover method provided in the second aspect.
In a ninth aspect, an embodiment of the present invention provides a computer program product containing instructions, which when run on a computer, causes the computer to execute the cell handover method according to the first aspect and any one of the implementations of the first aspect.
In a tenth aspect, an embodiment of the present invention provides a computer program product including instructions, which, when run on a computer, causes the computer to execute the cell handover method of the second aspect and any implementation manner thereof.
According to the cell switching method and device provided by the embodiment of the invention, the UE firstly determines the moving speed of the UE and sends the PUCCH information to the network equipment, wherein the PUCCH information comprises the moving speed of the UE.
After receiving PUCCH information sent by UE, the network equipment determines whether the moving speed of the UE is greater than or equal to a moving speed threshold value; when the moving speed of the UE is greater than or equal to the moving speed threshold, determining a first target cell from a plurality of cells, wherein the first target cell is a cell with the maximum RSRP in at least one cell, the at least one cell is a cell with the number of TR elements smaller than or equal to the number threshold of TR elements in the plurality of cells, and the plurality of cells are cells in a neighbor cell list corresponding to the UE; then, the network device sends first PDCCH information to the UE, where the first PDCCH information includes identification information of a first target cell, and the PDCCH information is used to instruct the UE to switch from a source cell to the target first cell. In the embodiment of the present invention, the network device may determine that the UE is in a high speed scenario or a low speed scenario based on the moving speed of the UE, and, when determining that the UE is in the high speed scenario, the network device determines, from a neighbor cell list determined for the UE by the network device, at least one first cell that can provide a service for the high speed scenario, specifically, a cell whose number of TR components is less than or equal to a threshold number of TR components, and the network device may determine, from the at least one first cell, a first target cell having a largest signal strength and instruct the UE to switch from the source cell to the first target cell. The network equipment determines the first target cell as the target cell to be switched (or accessed) by determining the UE moving speed scene and based on the number of TR components and the RSRP of different cells, so that the rationality of determining the target cell can be improved, and the success rate of cell switching is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic network architecture of a communication system according to an embodiment of the present invention;
fig. 2 is a hardware schematic diagram of a mobile phone according to an embodiment of the present invention;
fig. 3 is a hardware schematic diagram of a base station according to an embodiment of the present invention;
fig. 4 is a first schematic diagram illustrating a cell handover method according to an embodiment of the present invention;
fig. 5 is a second schematic diagram illustrating a cell handover method according to an embodiment of the present invention;
fig. 6 is a third schematic diagram of a cell handover method according to an embodiment of the present invention;
fig. 7 is a first schematic structural diagram of a network device 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 first schematic structural diagram of a UE according to an embodiment of the present invention;
fig. 10 is a second schematic structural diagram of a UE according to an embodiment of the present invention.
Detailed Description
The following describes a cell handover method and apparatus provided in an embodiment of the present invention in detail with reference to the accompanying drawings.
The terms "first" and "second" etc. in the description and drawings of the present application are used to distinguish different objects and not to describe a specific order of objects, e.g. a first target cell and a second target cell etc. are used to distinguish different target cells and not to describe a specific order of target cells.
Furthermore, the terms "including" and "having," and any variations thereof, as referred to in the description of the present application, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that, in the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. 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 relevant concepts in a concrete fashion.
The term "and/or" as used herein includes the use of either or both of the two methods.
In the description of the present application, the meaning of "a plurality" means two or more unless otherwise specified.
Based on the problems in the background art, embodiments of the present invention provide a cell switching method and apparatus, where a UE first determines a moving speed of the UE and sends PUCCH information to a network device, where the PUCCH information includes the moving speed of the UE.
After receiving PUCCH information sent by UE, the network equipment determines whether the moving speed of the UE is greater than or equal to a moving speed threshold value; when the moving speed of the UE is greater than or equal to the moving speed threshold, determining a first target cell from a plurality of cells, wherein the first target cell is a cell with the maximum RSRP in at least one cell, the at least one cell is a cell with the number of TR elements smaller than or equal to the number threshold of TR elements in the plurality of cells, and the plurality of cells are cells in a neighbor cell list corresponding to the UE; then, the network device sends first PDCCH information to the UE, where the first PDCCH information includes identification information of a first target cell, and the PDCCH information is used to instruct the UE to switch from a source cell to the target first cell. In the embodiment of the present invention, the network device may determine that the UE is in a high speed scenario or a low speed scenario based on the moving speed of the UE, and, when determining that the UE is in the high speed scenario, the network device determines, from a neighbor cell list determined for the UE by the network device, at least one first cell that can provide a service for the high speed scenario, specifically, a cell whose number of TR components is less than or equal to a threshold number of TR components, and the network device may determine, from the at least one first cell, a first target cell having a largest signal strength and instruct the UE to switch from the source cell to the first target cell. The network equipment determines the first target cell as the target cell to be switched (or accessed) by determining the UE moving speed scene and based on the number of TR components and the RSRP of different cells, so that the rationality of determining the target cell can be improved, and the success rate of cell switching is improved.
The cell switching method and apparatus provided in the embodiments of the present invention may be applied to a wireless communication system, and taking the wireless communication system as a 5G communication system as an example, as shown in fig. 1, the 5G communication system includes a UE101, a network device 102, a network device 103, a network device 104, and a network device 105. In general, in practical applications, the connections between the above-mentioned devices or service functions may be wireless connections, and for convenience, the connections between the devices are shown by solid lines in fig. 1.
Wherein, one network device (for example, the network device 102) of the multiple network devices (including the network device 102, the network device 103, the network device 104, and the network device 105) is used for the UE101 to access the network, and the network device 102 may include a base station, an evolved node base station (eNB), a next generation base station (gNB), a new radio base station (new radio eNB), a macro base station, a micro base station, a high frequency base station or a sending and receiving point (TRP), a non-third generation partnership project (3 GPP) access network (for example, WiFi), and/or a non-3GPP interworking function (N3 IWF).
As shown in fig. 1, the network device 102 can be a source network device of the UE101 (i.e., a source device for the UE101 to access the network), and the network device 102 can determine a target network device (e.g., the network device 103) from other network devices (including the network device 103, the network device 104, and the network device 105) so that the UE101 accesses the network through the target network device (i.e., the UE101 establishes a connection relationship with the network device 103).
It should be understood that for the plurality of network devices described above, any one network device may correspond to three cells. For convenience of example, in the embodiment of the present invention, one network device corresponds to one cell, that is, the UE101 changes from the connection relationship with the source network device to the connection relationship with the target network device, which may be understood as that the UE101 is handed over from the source cell (the cell corresponding to the source network device) to the target cell (the cell corresponding to the target network device). In the embodiment of the present invention, the network device 102 may determine the first target cell from a plurality of cells when the moving speed of the UE101 is greater than or equal to the moving speed threshold.
In this embodiment of the present invention, the UE shown in fig. 1 may be: a mobile phone, a tablet Computer, a notebook Computer, an Ultra-mobile Personal Computer (UMPC), a netbook, a Personal Digital Assistant (PDA), and the like.
Exemplarily, in the embodiment of the present invention, a hardware structure of a UE provided in the embodiment of the present invention is exemplarily described by taking the UE shown in fig. 1 as an example of a mobile phone. As shown in fig. 2, a mobile phone provided in an embodiment of the present invention includes: a processor 20, a Radio Frequency (RF) circuit 21, a power supply 22, a memory 23, an input unit 24, a display unit 25, and an audio circuit 26. Those skilled in the art will appreciate that the configuration of the handset shown in fig. 2 does not constitute a limitation of the handset, and may include more or fewer components than those shown in fig. 2, or may combine some of the components shown in fig. 2, or may be arranged differently than those shown in fig. 2.
The processor 20 is a control center of the mobile phone, connects various parts of the entire mobile phone by using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 23 and calling data stored in the memory 23, thereby performing overall monitoring of the mobile phone. Alternatively, processor 20 may include one or more processing units. Optionally, the processor 20 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, an application program, and the like; the modem processor handles primarily wireless communications. It will be appreciated that the modem processor described above may also be a processor separate from the processor 20.
The RF circuit 21 may be used to receive and transmit signals during the transmission and reception of information or during a call. For example, the downlink information of the base station is received and then processed by the processor 20; in addition, the uplink data is transmitted to the base station. Typically, the RF circuit includes, but is not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), and a duplexer. In addition, the handset may also communicate wirelessly with other devices in the network via the RF circuitry 21. The wireless Communication may use any Communication standard or protocol, including but not limited to Global System for Mobile Communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), LTE, email, and Short Messaging Service (SMS).
The power supply 22 may be used to power various components of the handset, and the power supply 22 may be a battery. Optionally, the power supply may be logically connected to the processor 20 through a power management system, so as to implement functions of managing charging, discharging, power consumption management, and the like through the power management system.
The memory 23 may be used to store software programs and modules, and the processor 20 executes various functional applications and data processing of the mobile phone by operating the software programs and modules stored in the memory 23. The memory 23 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, image data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 23 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 input unit 24 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone. Specifically, the input unit 24 may include a touch screen 241 and other input devices 242. The touch screen 241, also called a touch panel, can collect touch operations of a user (such as operations of the user on or near the touch screen 241 using any suitable object or accessory, such as a finger, a stylus, etc.) and drive the corresponding connection device according to a preset program. Alternatively, the touch screen 241 may include two parts, 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 20, and can receive and execute commands sent by the processor 20. In addition, the touch screen 241 may be implemented by various types such as resistive, capacitive, infrared, and surface acoustic wave. Other input devices 242 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, power switch keys, etc.), a trackball, a mouse, and a joystick.
The display unit 25 may be used to display information input by the user or information provided to the user, and various menus of the mobile phone. The display unit 25 may include a display panel 251. Alternatively, the Display panel 251 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-emitting Diode (OLED), or the like. Further, the touch screen 241 may cover the display panel 251, and when the touch screen 241 detects a touch operation on or near the touch screen 241, the touch screen is transmitted to the processor 20 to determine the type of the touch event, and then the processor 20 provides a corresponding visual output on the display panel 251 according to the type of the touch event. Although in fig. 2 the touch screen 241 and the display panel 251 are shown as two separate components to implement the input and output functions of the mobile phone, in some embodiments, the touch screen 241 and the display panel 251 may be integrated to implement the input and output functions of the mobile phone.
Audio circuitry 26, a speaker 261, and a microphone 262 to provide an audio interface between the user and the handset. In one aspect, the audio circuit 26 may transmit the converted electrical signal of the received audio data to the speaker 261, and the converted electrical signal is converted into a sound signal by the speaker 261 and output. On the other hand, the microphone 262 converts the collected sound signals into electrical signals, which are received by the audio circuit 26 and converted into audio data, which are then output by the processor 20 to the RF circuit 21 for transmission to, for example, another cellular phone, or output by the processor 20 to the memory 23 for further processing.
Optionally, the handset as shown in fig. 2 may also include various sensors. Such as gyroscope sensors, hygrometer sensors, infrared sensors, magnetometer sensors, etc., and will not be described in detail herein.
Optionally, the mobile phone shown in fig. 2 may further include a Wireless fidelity (WiFi) module, a bluetooth module, and the like, which are not described herein again.
By way of example, taking the network device 102 in fig. 1 as a commonly used base station as an example, a hardware structure of the network device 102 provided in the embodiment of the present invention is described. As shown in fig. 3, a base station provided in an embodiment of the present invention may include: portions 30 and 31. The 30 part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the 31 part is mainly used for baseband processing, base station control and the like. Portion 30 may be generally referred to as a transceiver unit, transceiver, transceiving circuitry, or transceiver, etc. Part 31 is typically the control center of the base station and may be generally referred to as a processing unit.
The transceiver unit of part 30, which may also be referred to as a transceiver, or a transceiver, etc., includes an antenna and a radio frequency unit, or only includes a radio frequency unit or a part thereof, where the radio frequency unit is mainly used for radio frequency processing. Alternatively, a device for implementing the receiving function in the part 30 may be regarded as a receiving unit, and a device for implementing the transmitting function may be regarded as a transmitting unit, that is, the part 30 includes a receiving unit and a transmitting unit. The receiving unit may also be referred to as a receiver, a receiving circuit, or the like, and the sending unit may be referred to as a transmitter, a transmitting circuit, or the like.
Portion 31 may comprise one or more boards or chips, each of which may comprise one or more processors and one or more memories, the processors being configured to read and execute programs in the memories to implement baseband processing functions and control of the base station. If a plurality of single boards exist, the single boards can be interconnected to increase the processing capacity. As an alternative implementation, multiple boards may share one or more processors, or multiple boards may share one or more memories. The memory and the processor may be integrated together or may be provided separately. In some embodiments, portions 30 and 31 may be integrated or may be separate. In addition, all functions in the part 31 may be integrated in one chip, or part of the functions may be integrated in one chip to implement another part of the functions are integrated in one or more other chips to implement, which is not limited in this embodiment of the present invention.
With reference to the communication system shown in fig. 1, the cell handover method provided by the embodiment of the present invention is completely described below from the perspective of interaction among devices in the communication system, so as to illustrate a process of handover of a UE from a source cell to a target cell.
As shown in fig. 4, a cell handover method according to an embodiment of the present invention may include S101 to S108.
S101, the UE determines the moving speed of the UE.
It should be understood that the UE may determine its moving speed and send the moving speed to the network device, which in turn determines that the UE is in a high speed scenario or a low speed scenario, and determines different target cells for the UE based on the different scenarios.
In an implementation manner of the embodiment of the present invention, the UE may determine the moving speed of the UE based on the location information of the UE at different times, which may specifically be implemented in step a.
Step A, UE obtains location information of the UE at a first time and location information at a second time.
The location information of the first time includes a latitude and a longitude corresponding to the UE at the first time, and the location information of the second time includes a latitude and a longitude corresponding to the UE at the second time.
It should be appreciated that the UE may determine the speed of movement of the UE using different latitude and longitude information at two different times.
In the embodiment of the invention, the moving speed of the UE meets the following requirements:
Figure BDA0002765879180000091
where V denotes the moving speed of the UE, M 1 Indicates the corresponding latitude, N, of the UE at the first moment 1 Indicates the longitude, M, corresponding to the UE at the first time 2 Indicating the latitude, N, corresponding to the UE at the second moment 2 Indicates the longitude, K, of the UE at the second time 1 Denotes a first distance coefficient, K 1 Is an integer greater than or equal to 1, K 2 Denotes a second distance coefficient, 0 < K 2 Is less than or equal to 1, and T represents the time difference between the first time and the second time.
Optionally, in an implementation manner, the first time may be a current time, and the second time may be a previous time that is different from the current time by a time difference T.
S102, the UE sends PUCCH information to the network equipment.
Wherein the PUCCH information includes a moving speed of the UE.
It should be understood that the UE may encapsulate the determined moving speed of the UE into PUCCH information and transmit the PUCCH information to the network device, so that the network device obtains the moving speed of the UE from the PUCCH information.
S103, the network equipment receives PUCCH information sent by the UE.
S104, the network equipment determines whether the moving speed of the UE is larger than or equal to a moving speed threshold value.
In the embodiment of the invention, the network equipment can determine the scene of the UE based on the moving speed of the UE, namely, the UE is determined to be in a high-speed scene or a low-speed scene, and then the network equipment determines the target cell to be accessed by the UE based on the scene of the UE. Specifically, when the moving speed of the UE is greater than or equal to the moving speed threshold, the network device may determine that the UE is in a high-speed scene, for example, the UE may be on a high-speed train; when the moving speed of the UE is less than the moving speed threshold, the network device may determine that the UE is in a low speed scene, for example, the UE may be on a normal train.
Alternatively, the moving speed threshold may be 80km/h (kilometer/hour).
In the embodiment of the present invention, when the moving speed of the UE is greater than or equal to the moving speed threshold, the network device may use a cell (e.g., a first target cell) with a smaller number of TR components in the plurality of cells as a cell to be switched (or accessed) by the UE; when the moving speed of the UE is smaller than the moving speed threshold, the network device may use a cell (for example, a second target cell) with a larger number of TR elements in the multiple cells as a cell to be switched (or accessed) by the UE. Or, it can be understood that the cell with the smaller number of TR elements is more suitable for serving a high-speed scene, that is, serving the UE whose moving speed is greater than or equal to the moving speed threshold; and the cell with the larger number of the TR components is more suitable for serving a low-speed scene, namely the UE with the moving speed smaller than the moving speed threshold value.
S105, under the condition that the moving speed of the UE is larger than or equal to the moving speed threshold value, the network equipment determines a first target cell from a plurality of cells.
The first target cell is a cell with the largest RSRP in at least one first cell, the at least one first cell is a cell with the number of TR elements smaller than or equal to a threshold of the number of TR elements in a plurality of cells, and the plurality of cells are cells in a neighbor cell list corresponding to the UE.
In conjunction with the description of the above embodiments, it should be understood that one network device corresponds to one cell, and the number of TR elements of one cell is the number of TR elements of the network device corresponding to the cell.
It should be noted that the number of TR components of the existing common network device includes 2, 4, 8, 32 and 64, and alternatively, the number of TR components threshold may be 8. In the embodiment of the present invention, the number of TR components and the threshold of the number of TR components of any network device are not specifically limited.
It may be understood that each network device may determine a neighbor cell list for the UE, where the neighbor cell list corresponding to the UE is a neighbor cell list determined for the UE by a source network device (for example, the network device 102 in fig. 1), and the neighbor cell list may be stored in the source network device, where the neighbor cell list includes information of cells to which the UE is switchable. And, the cell with the largest RSRP among the at least one first cell may be understood as the cell with the largest signal strength (or the best signal quality) among the at least one first cell.
As shown in fig. 5, in an implementation manner of the embodiment of the present invention, the network device may determine the first target cell from the plurality of cells through S1051-S1054.
S1051, the network equipment acquires the number of TR elements of each cell in a plurality of cells.
S1052, the network device determines at least one first cell from the plurality of cells.
In conjunction with the description of the above embodiments, it should be understood that the at least one first cell is a cell in which the number of TR elements in the plurality of cells is less than or equal to the threshold number of TR elements.
As an example, table 1 below is an example of the number of TR elements of each of a plurality of cells. The number of TR elements in cell 1, the number of TR elements in cell 2, the number of TR elements in cell 3, and the number of TR elements in cell 4 are 4, 8, and 32, respectively.
TABLE 1
Cell Number of TR modules
Cell 1 2
Cell 2 4
Cell 3 8
Cell 4 32
Assuming that the TR element number threshold is 8, the network device determines cell 1, cell 2, and cell 3 as the first cell.
S1053, the network equipment acquires the RSRP of each cell in at least one first cell.
S1054, the network device determines the cell with the maximum RSRP in the at least one first cell as a first target cell.
Illustratively, table 2 below is an example of RSRP of each of at least one cell. The RSRP of cell 1 is-95 db (decibel relative to one milliwatt), the RSRP of cell 2 is-80 dBm, and the RSRP of cell 3 is-110 dBm.
TABLE 2
Cell RSRP(dBm)
Cell 1 -95
Cell 2 -80
Cell 3 -110
Since the RSRP of cell 2 is the largest cell among the 3 first cells, the network device determines cell 2 as the first target cell.
S106, the network equipment sends the first PDCCH information to the UE.
The first PDCCH information includes identification information of a first target cell, and the first PDCCH is used for instructing the UE to switch from a source cell to the first target cell.
It should be understood that the source cell is a cell corresponding to a source network device (e.g., network device 102 in fig. 1). After determining the first target cell, the network device may send the identification information of the first target cell to the UE. Alternatively, the identification information of the first target cell may be a Physical Cell Identifier (PCI) of the first target cell.
S107, the network equipment sends the identification information of the UE to the first target network equipment.
The first target network device is a network device corresponding to the first target cell, and after determining the first target cell, the network device may send the identification information of the UE to the first target network device, so that the first target network device determines that the UE needs to establish a connection relationship with the first target network device, that is, the first target network device determines that the UE needs to be switched from the source cell to the first target cell.
Alternatively, the identification information of the UE may be user identity module (sim) information of the UE, a Media Access Control (MAC) address or an Internet Protocol (IP) address, and the like, and the identification information is used for identifying UE uniqueness.
It should be noted that the execution order of S106 and S107 is not limited by the embodiment of the present invention. For example, S106 may be performed first and then S107, or S107 may be performed first and then S106, or S106 and S107 may be performed simultaneously.
S108, the UE receives first PDCCH information sent by the network equipment.
In conjunction with the description of the above embodiment, it should be understood that the first PDCCH information includes identification information of the first target cell, and the first PDCCH is used to instruct the UE to handover from the source cell to the first target cell.
In the cell switching method provided by the embodiment of the invention, the UE firstly determines the moving speed of the UE and sends PUCCH information to the network equipment, wherein the PUCCH information comprises the moving speed of the UE.
After receiving PUCCH information sent by UE, the network equipment determines whether the moving speed of the UE is greater than or equal to a moving speed threshold value; when the moving speed of the UE is greater than or equal to the moving speed threshold, determining a first target cell from a plurality of cells, wherein the first target cell is a cell with the maximum RSRP in at least one cell, the at least one cell is a cell with the number of TR elements smaller than or equal to the number threshold of TR elements in the plurality of cells, and the plurality of cells are cells in a neighbor cell list corresponding to the UE; then, the network device sends first PDCCH information to the UE, where the first PDCCH information includes identification information of a first target cell, and the PDCCH information is used to instruct the UE to switch from a source cell to the target first cell. In the embodiment of the present invention, the network device may determine that the UE is in a high-speed scenario or a low-speed scenario based on the moving speed of the UE, and, when determining that the UE is in the high-speed scenario, the network device determines, from a neighbor cell list determined for the UE by the network device, at least one first cell that can provide a service for the high-speed scenario, specifically, a cell whose number of TR components is less than or equal to a threshold of the number of TR components, and the network device may determine, from the at least one first cell, a first target cell with a maximum signal strength and instruct the UE to switch from the source cell to the first target cell. The network equipment determines the first target cell as the target cell to be switched (or accessed) by determining the UE moving speed scene and based on the number of TR components and the RSRP of different cells, so that the rationality of determining the target cell can be improved, and the success rate of cell switching is improved.
As shown in fig. 6, in an implementation manner, a cell handover method provided in an embodiment of the present invention includes S201 to S209.
S201, the UE determines the moving speed of the UE.
S202, the UE sends PUCCH information to the network equipment.
S203, the network equipment receives PUCCH information sent by the UE.
S204, the network equipment determines whether the moving speed of the UE is larger than or equal to the moving speed threshold value.
It should be understood that the explanation of S201-S202 can refer to the description of S101-S104 above, and the description is omitted here.
S205, under the condition that the moving speed of the UE is smaller than the moving speed threshold value, the network equipment determines a second target cell from the plurality of cells.
The second target cell is a cell with the largest RSRP in the plurality of cells.
In conjunction with the above description of the embodiments, it should be understood that the UE moving speed is less than the moving speed threshold, indicating that the UE is in a low speed scene. In the embodiment of the present invention, when the UE is in a low-speed scenario, the network device may determine, as the second target cell, a cell with the largest RSRP (i.e., the largest signal strength) among the cells in the neighbor cell list corresponding to the UE.
S206, the network equipment determines whether the number of the TR elements of the second target cell is larger than the threshold value of the number of the TR elements.
And S207, the network equipment sends second PDCCH information to the UE under the condition that the number of TR modules of the second target cell is greater than the threshold value of the number of TR modules.
The second PDCCH information includes identification information of a second target cell, and the second PDCCH information is used to instruct the UE to switch from the source cell to the second target cell.
It is to be understood that, in the case that the TR component of the second target cell is greater than the TR component threshold, the network device may determine that the second target cell is suitable for serving a low speed scenario, that is, suitable as a cell to be handed over (or accessed) by a UE whose moving speed is less than the moving speed threshold, and it should be understood that the second target cell is a cell with the largest RSRP among the multiple cells.
S208, the network equipment sends the identification information of the UE to the second target network equipment.
The second target network device is a network device corresponding to the second target cell, and after determining the second target cell, the network device may send the identification information of the UE to the second target network device, so that the second target network device determines that the UE needs to establish a connection relationship with the second target network device, that is, the second target network device determines that the UE needs to be switched from the source cell to the second target cell.
S209, the UE receives second PDCCH information sent by the network equipment.
In conjunction with the description of the above embodiment, it should be understood that the second PDCCH information includes identification information of a second target cell, and the second PDCCH information is used for instructing the UE to handover from the source cell to the second target cell.
It should be noted that the UE may receive different PDCCH information sent by the network device. For example, the UE may receive first PDCCH information sent by the network device, and may also receive second PDCCH information sent by the network device. The different PDCCH information is used to instruct the UE to switch from the source cell to a different target cell, that is, the first PDCCH information is used to instruct the UE to switch from the source cell to the first target cell, and the second PDCCH information is used to instruct the UE to switch from the source cell to the second target cell. For convenience of illustration or explanation, the UE may receive PDCCH information sent by the network device, where the PDCCH information may be first PDCCH information or second PDCCH information, and the like; the PDCCH information includes identification information of a target cell, where the target cell may be a first target cell or a second target cell, and the like; the PDCCH information is used to instruct the UE to handover from the source cell to the target cell.
In the cell switching method provided by the embodiment of the invention, the UE firstly determines the moving speed of the UE and sends PUCCH information to the network equipment, wherein the PUCCH information comprises the moving speed of the UE.
After receiving PUCCH information sent by UE, the network equipment determines whether the moving speed of the UE is greater than or equal to a moving speed threshold value; determining a second target cell from the plurality of cells under the condition that the moving speed of the UE is smaller than the moving speed threshold, wherein the second target cell is the cell with the maximum RSRP in the plurality of cells; then, the network device determines whether the number of TR modules of the second target cell is greater than a threshold number of TR modules, and transmits second PDCCH information to the UE when the number of TR modules of the second target cell is greater than the threshold number of TR modules, wherein the second PDCCH information includes identification information of the second target cell, and the PDCCH information is used for instructing the UE to switch from the source cell to the target second cell. In the embodiment of the present invention, the network device may determine, based on the moving speed of the UE, that the UE is in a high-speed scene or a low-speed scene, and when determining that the UE is in the low-speed scene, the network device determines, from a neighbor cell list determined for the UE by the network device, a second target cell with the largest signal strength, and then determines whether the second target cell may provide service for the low-speed scene, specifically, whether the second target cell is a cell in which the number of TR components is greater than the threshold number of TR components; then, the network device instructs the UE to handover from the source cell to the second target cell if it is determined that the second target cell can provide services for the low speed scenario. The network equipment determines the second target cell as the target cell to be switched (or accessed) by determining the UE moving speed scene and based on the RSRP of the cells and the number of TR components of the second target cell, so that the rationality of determining the target cell can be improved, and the success rate of cell switching can be improved.
In an implementation manner of the embodiment of the present invention, after the step S206, the cell handover method provided in the embodiment of the present invention further includes: step B-step C.
And step B, under the condition that the number of the TR components of the second target cell is less than or equal to the TR component threshold, the network equipment determines whether the load of the second target cell is less than the load threshold.
It should be understood that the number of TR elements of the second target cell is less than or equal to the TR element threshold, which indicates that the second target cell is better suited to serve a high speed scenario, but the UE is in a low speed scenario, i.e. the moving speed of the UE is less than the moving speed threshold. The network device may determine whether to provide service to the UE based on the load of the second target cell. Specifically, when the load of the second target cell is small, which indicates that the second target cell is capable of or has sufficient resources to provide service for the low-speed UE, the UE may be instructed to switch from the source cell to the second target cell; when the load of the second target cell is larger, it indicates that the second target cell has insufficient capacity or insufficient resources to provide service for the low-speed UE, and may continue to determine the next target cell for the UE.
In an implementation manner of the embodiment of the present invention, the network device may determine the load of the second target cell based on the traffic of the second target cell, and specifically includes step 1-step 2.
Step 1, the network device determines the total flow of the second target cell.
It should be understood that the total traffic is a total traffic that can be carried by the carrier corresponding to the second target cell.
And 2, the network equipment determines the sum of the flow of the second target cell in a preset time period.
It can be understood that the sum of the flows of the second target cell in the preset time period is the sum of the flows corresponding to the services with different quality of service (QOS) priorities in the preset time period of the second target cell.
The load of the second target cell satisfies:
Figure BDA0002765879180000161
wherein, P load Represents the load of the second target cell, W now Represents the sum of the flows of the second target cell in a preset time period, W max A total flow of the second target cell is identified.
And step C, the network equipment sends second PDCCH information to the UE under the condition that the load of the second target cell is smaller than the load threshold value.
In conjunction with the description of the foregoing embodiments, it should be understood that the second PDCCH information includes identification information of the second target cell, and the second PDCCH information is used to instruct the UE to handover from the source cell to the second target cell.
It will be appreciated that a load of the second target cell being less than the load threshold indicates that the second target cell is less loaded and that the second target cell has the ability or sufficient resources to serve a low speed UE and may indicate a handover of the UE from the source cell to the second target cell.
In an implementation manner, after the step B, the cell handover method provided in the embodiment of the present invention further includes steps D to H.
And D, under the condition that the load of the second target cell is greater than or equal to the load threshold, the network equipment determines whether the number of the TR elements of the third target cell is greater than the number threshold of the TR elements.
The third target cell is a cell with the largest RSRP among the plurality of cells except the second target cell.
It should be understood that the load of the second target cell being greater than or equal to the load threshold indicates insufficient capacity or insufficient resources to serve the UE at low speed, and at this time, a target cell serving the UE, i.e. a third target cell, may be determined from other cells (i.e. cells other than the second target cell among the plurality of cells).
And step E, the network equipment sends third PDCCH information to the UE under the condition that the number of TR elements of the third target cell is greater than the threshold value of the number of TR elements.
The third PDCCH information includes identification information of a third target cell, and the third PDCCH information is used to instruct the UE to switch from the source cell to the third target cell.
And F, under the condition that the number of the TR elements of the third target cell is less than or equal to the number of the TR elements, the network equipment determines whether the load of the third target cell is less than a load threshold value.
And G, under the condition that the load of the third target cell is smaller than the load threshold value, the network equipment sends third PDCCH information to the UE.
And step H, under the condition that the load of the third target cell is greater than or equal to the load threshold, the network equipment determines whether the TR component of the fourth target cell is greater than the TR component threshold.
And the fourth target cell is the cell with the maximum RSRP in the other cells except the third target cell.
It should be understood that the explanation of the steps E to H can refer to the description in S206, steps B to C and step D, which are not repeated herein.
It should be noted that, when the number of TR elements of the fourth target cell is less than or equal to the TR element threshold and the load of the fourth target cell is greater than or equal to the load threshold, the network device continues to select a cell with a smaller RSRP from the multiple cells, and determines whether the cell can be used as a target cell to be handed over (or accessed) by the UE.
According to the method example, the network device, the UE, and the like may be divided into functional modules, for example, the functional modules may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the embodiment of the present invention is schematic, and is only one logic function division, and another division manner may be available in actual implementation.
In the case of dividing each functional module by corresponding functions, fig. 7 shows a schematic diagram of a possible structure of the network device involved in the foregoing embodiments, and as shown in fig. 7, the network device 40 may include: a receiving module 401, a determining module 402 and a sending module 403.
A receiving module 401, configured to receive PUCCH information sent by a UE, where the PUCCH information includes a moving speed of the UE.
A determining module 402 for determining whether the moving speed of the UE is greater than or equal to a moving speed threshold.
The determining module 402 is further configured to determine a first target cell from multiple cells when the moving speed of the UE is greater than or equal to the moving speed threshold, where the first target cell is a cell with a largest RSRP among at least one first cell, the at least one first cell is a cell with a number of TR components smaller than or equal to the number of TR components threshold among the multiple cells, and the multiple cells are cells in a neighbor list corresponding to the UE.
A sending module 403, configured to send first PDCCH information to the UE, where the first PDCCH information includes identification information of the first target cell, and the first PDCCH information is used to instruct the UE to switch from a source cell to the first target cell.
Optionally, the determining module 402 is further configured to determine a second target cell from the multiple cells, where the moving speed of the UE is less than the moving speed threshold, where the second target cell is a cell with the largest RSRP among the multiple cells; and determining whether the number of TR elements of the second target cell is greater than the threshold number of TR elements.
The sending module 403 is further configured to send second PDCCH information to the UE when the number of TR elements of the second target cell is greater than the threshold number of TR elements, where the second PDCCH information includes identification information of the second target cell, and the second PDCCH information is used to instruct the UE to switch from the source cell to the second target cell.
Optionally, the determining module 402 is further configured to determine whether the load of the second target cell is less than a load threshold value if the number of TR elements of the second target cell is less than or equal to the TR element number threshold value.
A sending module 403, configured to send the second PDCCH information to the UE when the load of the second target cell is smaller than the load threshold.
Optionally, the network device 40 further includes: an acquisition module 404.
An obtaining module 404, configured to obtain the number of TR elements of each of the multiple cells.
A determining module 402 is further configured to determine the at least one first cell from the plurality of cells.
The obtaining module 404 is further configured to obtain RSRP of each cell in the at least one first cell.
The determining module 402 is further configured to determine a cell with the largest RSRP among the at least one first cell as the first target cell.
In case of using integrated units, fig. 8 shows a schematic diagram of a possible structure of the network device involved in the above embodiments. As shown in fig. 8, the network device 50 may include: a processing module 501 and a communication module 502. The processing module 501 may be used to control and manage the actions of the network device 50. Communication module 502 may be used to support communication of network device 50 with other entities. Optionally, as shown in fig. 8, the network device 50 may further include a storage module 503 for storing program codes and data of the network device 50.
The processing module 501 may be a processor or a controller. The communication module 502 may be a transceiver, a transceiver circuit or a communication interface, etc. The storage module 503 may be a memory.
When the processing module 501 is a processor, the communication module 502 is a transceiver, and the storage module 503 is a memory, the processor, the transceiver, and the memory may be connected by a bus. The bus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc.
In the case of adopting the functional modules divided for the respective functions, fig. 9 shows a possible structural diagram of the UE involved in the foregoing embodiment, as shown in fig. 9, the UE 60 may include: a determination module 601, a sending module 602, and a receiving module 603.
A determining module 601, configured to determine a moving speed of the UE.
A sending module 602, configured to send PUCCH information to a network device, where the PUCCH information includes a moving speed of the UE.
A receiving module 603, configured to receive PDCCH information sent by the network device, where the PDCCH information includes identification information of a target cell, and the PDCCH information is used to instruct the UE to switch from a source cell to the target cell.
Optionally, the UE 60 further includes: an acquisition module 604.
An obtaining module 604, configured to obtain location information of the UE at a first time and location information of the UE at a second time, where the location information of the first time includes a latitude and a longitude corresponding to the UE at the first time, and the location information of the second time includes a latitude and a longitude corresponding to the UE at the second time.
The moving speed of the UE meets the following requirements:
Figure BDA0002765879180000191
where V denotes the moving speed of the UE, M 1 Indicates the latitude, N, corresponding to the UE at the first moment 1 Represents the longitude, M, corresponding to the UE at the first time 2 Indicating the latitude, N, corresponding to the UE at the second time 2 Indicates the longitude, K, corresponding to the UE at the second time 1 Denotes a first distance coefficient, K 1 Is an integer greater than or equal to 1, K 2 Denotes a second distance coefficient, 0 < K 2 T is less than or equal to 1, and T represents the time difference between the first time and the second time.
In case of using integrated units, fig. 10 shows a possible structural diagram of the UE involved in the above embodiments. As shown in fig. 10, the UE 70 may include: a processing module 701 and a communication module 702. The processing module 701 may be used to control and manage the actions of the UE 70. The communication module 702 may be used to support communication of the UE 70 with other entities. Optionally, as shown in fig. 10, the UE 70 may further include a storage module 703 for storing program codes and data of the UE 70.
The processing module 701 may be a processor or a controller, among others. The communication module 702 may be a transceiver, a transceiver circuit or a communication interface, etc. The storage module 703 may be a memory.
When the processing module 701 is a processor, the communication module 702 is a transceiver, and the storage module 703 is a memory, the processor, the transceiver, and the memory may be connected through a bus. The bus may be a PCI bus or an EISA bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc.
It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the invention are all or partially effected when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optics, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or can comprise one or more data storage devices, such as a server, a data center, etc., that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (12)

1. A method of cell handover, comprising:
the method comprises the steps that network equipment receives Physical Uplink Control Channel (PUCCH) information sent by User Equipment (UE), wherein the PUCCH information comprises the moving speed of the UE;
the network device determining whether a movement speed of the UE is greater than or equal to a movement speed threshold;
when the moving speed of the UE is greater than or equal to the moving speed threshold, the network equipment determines a first target cell from a plurality of cells, wherein the first target cell is a cell with the maximum Reference Signal Received Power (RSRP) in at least one first cell, the at least one first cell is a cell with the number of TR (radio transmit-receive) components smaller than or equal to the number threshold of TR components in the plurality of cells, and the plurality of cells are cells in a neighbor cell list corresponding to the UE;
and the network equipment sends first Physical Downlink Control Channel (PDCCH) information to the UE, wherein the first PDCCH information comprises identification information of the first target cell, and the first PDCCH information is used for indicating the UE to be switched from a source cell to the first target cell.
2. The method of claim 1, wherein after the network device determines whether the mobility speed of the UE is greater than or equal to a mobility speed threshold, the method further comprises:
the network equipment determines a second target cell from the plurality of cells under the condition that the moving speed of the UE is smaller than the moving speed threshold value, wherein the second target cell is a cell with the maximum RSRP in the plurality of cells;
the network device determining whether the number of TR components of the second target cell is greater than the TR component number threshold;
and when the number of the TR components of the second target cell is larger than the threshold value of the number of the TR components, the network equipment sends second PDCCH information to the UE, wherein the second PDCCH information comprises identification information of the second target cell, and the second PDCCH information is used for indicating the UE to be switched from the source cell to the second target cell.
3. The method of claim 2, wherein after the network device determines whether the number of TR components of the second target cell is greater than the TR component number threshold, the method further comprises:
in the event that the number of TR components of the second target cell is less than or equal to the TR component number threshold, the network device determines whether the load of the second target cell is less than a load threshold;
and the network equipment sends the second PDCCH information to the UE under the condition that the load of the second target cell is smaller than the load threshold value.
4. The method of claim 3, wherein the network device determines the first target cell from a plurality of cells, comprising:
the network equipment acquires the number of TR components of each cell in the plurality of cells;
the network device determining the at least one first cell from the plurality of cells;
the network equipment acquires the RSRP of each cell in the at least one first cell;
the network equipment determines a cell with the maximum RSRP in the at least one first cell as the first target cell.
5. A method of cell handover, comprising:
user Equipment (UE) determines the moving speed of the UE;
the UE sends Physical Uplink Control Channel (PUCCH) information to network equipment, wherein the PUCCH information comprises the moving speed of the UE, so that the network equipment determines a first target cell from a plurality of cells under the condition that the moving speed of the UE is greater than or equal to a moving speed threshold, the first target cell is a cell with the maximum Reference Signal Received Power (RSRP) in at least one first cell, the at least one first cell is a cell with the number of TR (transmit-receive) modules smaller than or equal to the number threshold of the TR modules in the plurality of cells, and the plurality of cells are cells in a neighbor cell list corresponding to the UE;
and the UE receives Physical Downlink Control Channel (PDCCH) information sent by the network equipment, wherein the PDCCH information comprises identification information of the first target cell, and the PDCCH information is used for indicating the UE to be switched from a source cell to the first target cell.
6. The method of claim 5, wherein the UE determining the speed of movement of the UE comprises:
the UE acquires the position information of the UE at a first moment and the position information of the UE at a second moment, wherein the position information of the first moment comprises the latitude and longitude corresponding to the UE at the first moment, and the position information of the second moment comprises the latitude and longitude of the UE at the second moment;
the moving speed of the UE satisfies the following conditions:
Figure FDA0003798382170000021
wherein V represents a moving speed of the UE, M 1 Represents the latitude, N, corresponding to the UE at the first moment 1 Represents a longitude, M, corresponding to the UE at the first time 2 Indicating the latitude, N, corresponding to the UE at the second time 2 Indicating a longitude, K, corresponding to the UE at the second time 1 Denotes a first distance coefficient, K 1 Is an integer greater than or equal to 1, K 2 Denotes a second distance coefficient, 0 < K 2 ≦ 1, T represents a time difference between the first time instant and the second time instant.
7. A network device, comprising: the device comprises a receiving module, a determining module and a sending module;
the receiving module is configured to receive Physical Uplink Control Channel (PUCCH) information sent by User Equipment (UE), where the PUCCH information includes a moving speed of the UE;
the determining module is configured to determine whether a moving speed of the UE is greater than or equal to a moving speed threshold;
the determining module is further configured to determine a first target cell from multiple cells when the moving speed of the UE is greater than or equal to the moving speed threshold, where the first target cell is a cell with a largest reference signal received power RSRP in at least one first cell, the at least one first cell is a cell with a number of TR transceiver modules smaller than or equal to a number threshold of TR modules in the multiple cells, and the multiple cells are cells in a neighbor list corresponding to the UE;
the sending module is configured to send first PDCCH information to the UE, where the first PDCCH information includes identification information of the first target cell, and the first PDCCH information is used to instruct the UE to switch from a source cell to the first target cell.
8. The network device of claim 7,
the determining module is further configured to determine a second target cell from the multiple cells when the moving speed of the UE is smaller than the moving speed threshold, where the second target cell is a cell with a largest RSRP among the multiple cells; and determining whether the number of TR elements of the second target cell is greater than the TR element number threshold;
the sending module is further configured to send second PDCCH information to the UE when the number of TR elements of the second target cell is greater than the threshold number of TR elements, where the second PDCCH information includes identification information of the second target cell, and the second PDCCH information is used to instruct the UE to switch from the source cell to the second target cell.
9. The network device of claim 8,
the determining module is further configured to determine whether the load of the second target cell is less than a load threshold value if the number of TR elements of the second target cell is less than or equal to the TR element number threshold value;
the sending module is further configured to send the second PDCCH information to the UE when the load of the second target cell is smaller than the load threshold.
10. The network device of claim 9, wherein the network device further comprises an acquisition module;
the acquiring module is used for acquiring the number of TR components of each cell in the plurality of cells;
the determining module is further configured to determine the at least one first cell from the plurality of cells;
the acquiring module is further configured to acquire RSRP of each cell in the at least one first cell;
the determining module is further configured to determine a cell with a largest RSRP among the at least one first cell as the first target cell.
11. The UE is characterized by comprising a determining module, a sending module and a receiving module;
the determining module is configured to determine a moving speed of the UE;
the sending module is configured to send Physical Uplink Control Channel (PUCCH) information to a network device, where the PUCCH information includes a moving speed of the UE, so that the network device determines a first target cell from multiple cells when the moving speed of the UE is greater than or equal to a moving speed threshold, where the first target cell is a cell with a largest Reference Signal Received Power (RSRP) in at least one first cell, the at least one first cell is a cell with a number of TR (transmit-receive) components that is less than or equal to a number of TR components threshold in the multiple cells, and the multiple cells are cells in a neighbor cell list corresponding to the UE;
the receiving module is configured to receive PDCCH information sent by the network device, where the PDCCH information includes identification information of the first target cell, and the PDCCH information is used to instruct the UE to switch from a source cell to the first target cell.
12. The UE of claim 11, further comprising an acquisition module;
the obtaining module is configured to obtain location information of the UE at a first time and location information of the UE at a second time, where the location information of the first time includes a latitude and a longitude corresponding to the UE at the first time, and the location information of the second time includes a latitude and a longitude of the UE at the second time;
the moving speed of the UE satisfies the following conditions:
Figure FDA0003798382170000041
wherein V represents a moving speed of the UE, M 1 Represents the latitude, N, corresponding to the UE at the first moment 1 Represents a longitude, M, corresponding to the UE at the first time 2 Indicating the latitude, N, corresponding to the UE at the second time 2 Represents the longitude, K, corresponding to the UE at the second time 1 Denotes a first distance coefficient, K 1 Is an integer greater than or equal to 1, K 2 Represents a second distance coefficient, 0 < K 2 ≦ 1, T represents a time difference between the first time instant and the second time instant.
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