A cell switching method, device and storage medium

Abstract

This application provides a cell handover method, apparatus, and storage medium, relating to the field of communication technology, for solving the problem of co-channel interference between cells. The method includes: acquiring the mobile distance of a terminal and the number of handovers between multiple first cells corresponding to a first frequency point. The first frequency point is the terminal's serving frequency point. When the mobile distance is less than a preset distance and the number of handovers is greater than a preset number, a target second cell corresponding to a second frequency point is determined, and the terminal is instructed to establish a communication connection with the target second cell. The second frequency point is a frequency point different from the first frequency point.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a cell handover method, apparatus and storage medium. Background Technology

[0002] When multiple cells with the same frequency and similar signal strength exist in an area, co-channel interference will occur, which will affect the network quality of terminals in that area and may even frequently trigger cell handover, affecting the terminal service experience.

[0003] Currently, the method to address co-channel interference is to adjust the operating parameters of the corresponding base stations, thereby reducing the overlapping coverage rate of co-channel networks. However, in practical applications, the factors affecting the overlapping coverage rate are quite complex, including not only base station operating parameters but also environmental factors such as base station density and height, which are difficult to control. Therefore, adjusting base station operating parameters cannot significantly optimize overlapping coverage and may even affect the network quality in non-overlapping areas, resulting in the inability to effectively solve the problem of co-channel interference between cells. Summary of the Invention

[0004] This application provides a cell handover method, apparatus, and storage medium to solve the problem of co-channel interference between cells.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] Firstly, a cell handover method is provided, comprising: acquiring the mobile distance of a terminal and the number of handovers between multiple first cells corresponding to a first frequency point. The first frequency point is the terminal's serving frequency point. When the mobile distance is less than a preset distance and the number of handovers is greater than a preset number, a target second cell corresponding to a second frequency point is determined, and the terminal is instructed to establish a communication connection with the target second cell. The second frequency point is a frequency point different from the first frequency point.

[0007] Optionally, the method for determining the target second cell corresponding to the second frequency point includes: obtaining network quality measurement values ​​of multiple second cells corresponding to the second frequency point; and determining the second cell that meets the preset anti-interference conditions as the target second cell based on the network quality measurement values ​​of the multiple second cells.

[0008] Optionally, a method for determining a target second cell that meets preset anti-interference conditions based on network quality measurements of multiple second cells includes: identifying a second cell among the multiple second cells whose network quality measurement value is greater than a preset measurement value as a candidate cell; identifying a second cell among the multiple second cells other than the candidate cell whose network quality measurement value is less than or equal to a preset difference as an interfering cell of the candidate cell; and when a candidate cell meets preset conditions, identifying the candidate cell as the target second cell; the preset conditions include: the number of interfering cells is less than a preset value.

[0009] Optionally, before instructing the terminal to establish a communication connection with the target second cell, the method further includes: determining the target number of network resources required by the terminal based on the service information pre-registered by the terminal; sending a handover instruction message to the base station to which the target second cell belongs; the handover instruction message is used to instruct the base station to schedule the target number of network resources in the target second cell.

[0010] In a second aspect, a cell handover device is provided, comprising: an acquisition unit, a determination unit, and an indication unit; the acquisition unit is used to acquire the moving distance of a terminal and the number of handovers between multiple first cells corresponding to a first frequency point; the first frequency point is the service frequency point of the terminal; the determination unit is used to determine a target second cell corresponding to a second frequency point when the moving distance is less than a preset distance and the number of handovers is greater than a preset number; the second frequency point is a frequency point different from the first frequency point; the indication unit is used to instruct the terminal to establish a communication connection with the target second cell.

[0011] Optionally, the determining unit is specifically used for: acquiring network quality measurement values ​​of multiple second cells corresponding to the second frequency point; and determining the second cell that meets the preset anti-interference conditions as the target second cell based on the network quality measurement values ​​of the multiple second cells.

[0012] Optionally, the determining unit is specifically used to: determine the second cell among multiple second cells whose network quality measurement value is greater than a preset measurement value as a candidate cell; determine the second cell among multiple second cells other than the candidate cell whose difference from the candidate cell's network quality measurement value is less than or equal to a preset difference as an interfering cell of the candidate cell; when the candidate cell meets preset conditions, determine the candidate cell as the target second cell; the preset conditions include: the number of interfering cells is less than a preset value.

[0013] Optionally, the instruction unit is further configured to: determine the target number of network resources required by the terminal based on the service information pre-registered by the terminal; send a handover instruction message to the base station to which the target second cell belongs; the handover instruction message is used to instruct the base station to schedule the target number of network resources in the target second cell.

[0014] Thirdly, a cell handover apparatus is provided, including a memory and a processor; the memory is used to store computer execution instructions, and the processor is connected to the memory via a bus; when the cell handover apparatus is running, the processor executes the computer execution instructions stored in the memory to cause the cell handover apparatus to perform the cell handover method described in the first aspect.

[0015] The cell handover device can be a network device or a component of a network device, such as a chip system within the network device. This chip system supports the network device in implementing the functions involved in the first aspect and any of its possible implementations, such as acquiring, determining, and transmitting data and / or information involved in the aforementioned cell handover method. The chip system includes a chip, but may also include other discrete devices or circuit structures.

[0016] Fourthly, a computer-readable storage medium is provided, comprising computer-executable instructions that, when executed on a computer, cause the computer to perform the cell handover method described in the first aspect.

[0017] Fifthly, a computer program product is also provided, which includes computer instructions that, when executed on a cell handover device, cause the cell handover device to perform the cell handover method as described in the first aspect above.

[0018] It should be noted that the aforementioned computer instructions may be stored, in whole or in part, on the first computer-readable storage medium. The first computer-readable storage medium may be packaged together with the processor of the cell handover device, or it may be packaged separately from the processor of the cell handover device; this application embodiment does not limit this.

[0019] The descriptions of the second, third, fourth, and fifth aspects in this application can be referenced to the detailed description of the first aspect; and the beneficial effects of the second, third, fourth, and fifth aspects can be referenced to the analysis of the beneficial effects of the first aspect, which will not be repeated here.

[0020] In the embodiments of this application, the names of the aforementioned cell handover devices do not limit the devices or functional modules themselves. In actual implementation, these devices or functional modules may appear under other names. As long as the functions of each device or functional module are similar to those of this application, they fall within the scope of the claims of this application and their equivalents.

[0021] These or other aspects of this application will become more readily apparent in the following description.

[0022] The technical solution provided in this application brings at least the following beneficial effects:

[0023] Based on any of the above, this application provides a cell handover method that can obtain the terminal's travel distance and the number of handovers between multiple first cells corresponding to a first frequency point. The first frequency point is the terminal's serving frequency point. When the travel distance is less than a preset distance and the number of handovers is greater than a preset number, a target second cell corresponding to a second frequency point is determined, and the terminal is instructed to establish a communication connection with the target second cell. The second frequency point is a frequency point different from the first frequency point.

[0024] As shown above, when the moving distance is less than the preset distance and the number of handovers is greater than the preset number, it indicates that the terminal is experiencing co-channel interference at the current cell's serving frequency. In this case, the terminal can be instructed to establish a communication connection with a cell of a different frequency, thus enabling the terminal to avoid co-channel interference at its original frequency. Compared to general methods, this application can avoid changing the current network operating parameters, reducing control difficulty and effectively solving the problem of co-channel interference between cells. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a cell handover system provided in an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the hardware structure of a communication device provided in an embodiment of this application;

[0027] Figure 3 A schematic diagram of the hardware structure of another communication device provided in the embodiments of this application;

[0028] Figure 4 A flowchart illustrating a cell handover method provided in this application embodiment. Figure 1 ;

[0029] Figure 5 A flowchart illustrating a cell handover method provided in this application embodiment. Figure 2 ;

[0030] Figure 6 A flowchart illustrating a cell handover method provided in this application embodiment. Figure 3 ;

[0031] Figure 7 This is a schematic diagram of a cell handover device provided in an embodiment of this application. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that in the embodiments of this application, the words "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of the words "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0034] To facilitate a clear description of the technical solutions of the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish the same or similar items with essentially the same function and effect. Those skilled in the art can understand that the terms "first" and "second" are not intended to limit the quantity or execution order.

[0035] As shown in the background section, current methods for addressing co-channel interference involve adjusting corresponding network operating parameters to reduce the overlap coverage of co-channel networks. However, in practical applications, the factors influencing overlap coverage are complex, including not only the network operating parameters of base stations but also environmental factors such as base station density and altitude, which are difficult to control. Therefore, adjusting network operating parameters cannot significantly optimize overlap coverage and may even affect network quality in non-overlapping areas, resulting in the inability to effectively resolve the problem of inter-cell co-channel interference.

[0036] This application provides a cell handover method that can obtain the terminal's travel distance and the number of handovers between multiple first cells corresponding to a first frequency point. The first frequency point is the terminal's serving frequency point. When the travel distance is less than a preset distance and the number of handovers is greater than a preset number, a target second cell corresponding to a second frequency point is determined, and the terminal is instructed to establish a communication connection with the target second cell. The second frequency point is a frequency point different from the first frequency point.

[0037] As shown above, when the moving distance is less than the preset distance and the number of handovers is greater than the preset number, it indicates that the terminal is experiencing co-channel interference at the current cell's serving frequency. In this case, the terminal can be instructed to establish a communication connection with a cell of a different frequency, thus enabling the terminal to avoid co-channel interference at its original frequency. Compared to general methods, this application can avoid changing the current network operating parameters, reducing control difficulty and effectively solving the problem of co-channel interference between cells.

[0038] This cell handover method is applicable to cell handover systems. For example... Figure 1 As shown, the cell handover system includes: terminal 101, base station 102 and cell handover device 103.

[0039] Specifically, base station 102 can transmit signals at multiple frequencies, each corresponding to at least one cell. Terminal 101 establishes a communication connection with any cell through base station 102 and transmits signals at the corresponding frequency. At this time, the frequency becomes the service frequency of terminal 101.

[0040] When there is co-frequency interference at the service frequency of terminal 101, the cell handover device 103 can enable terminal 101 to hand over to a cell with a different frequency.

[0041] In one embodiment, terminal 101 is a terminal device used to obtain service information from the network. It can be a handheld device with wireless connectivity, a wireless terminal connected to another processing device via a wireless modem, or a wired terminal. Examples include smart devices such as mobile phones, personal computers (PCs), desktop computers, tablets, laptops, netbooks, and personal digital assistants (PDAs). This application embodiment does not limit the specific type of device.

[0042] In one embodiment, base station 102 may be a base station (BTS) in Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), a base station (node ​​B) in Wideband Code Division Multiple Access (WCDMA), an eNB in ​​Internet of Things (IoT) or Narrowband Internet of Things (NB-IoT), a future 5G mobile communication network, or a future evolved public land mobile network (PLMN). This application embodiment does not impose any limitations on this.

[0043] In one embodiment, the cell handover device 103 may be a functional module on the terminal 101 or the base station 102, or it may be an independently configured physical device.

[0044] It is easy to understand that when the cell handover device 103 is a functional module on the terminal 101 or the base station 102, the interaction between the cell handover device 103 and the terminal 101 or the base station 102 is the same as the interaction between the internal modules of the terminal 101 or the base station 102. In this case, the interaction process between the two is the same as the interaction process between the two when the cell handover device 103 is an independently configured physical device.

[0045] Optionally, when the cell handover device 103 is an independently configured physical device, the cell handover device 103 can be an independent server or other form of physical device. The physical device can be a server in a server cluster (composed of multiple servers), a chip in the physical device, a system-on-a-chip in the physical device, or a virtual machine deployed on a physical machine. This application embodiment does not limit this.

[0046] For ease of understanding, Figure 1 Taking "cell handover device 103 is an independently configured physical device" as an example, cell handover device 103 can be connected to terminal 101 and base station 102 respectively.

[0047] Combination Figure 1 Terminal 101, base station 102, and cell handover equipment 103 all include Figure 2 or Figure 3 The components included in the communication device shown. The following are examples... Figure 2 and Figure 3 Taking the communication device shown as an example, the hardware structure of terminal 101, base station 102 and cell handover device 103 is introduced.

[0048] like Figure 2 The diagram shown is a hardware structure schematic of a communication device provided in an embodiment of this application. The communication device includes a processor 21, a memory 22, a communication interface 23, and a bus 24. The processor 21, the memory 22, and the communication interface 23 are connected via the bus 24.

[0049] Processor 21 is the control center of the communication device. It can be a single processor or a collective term for multiple processing elements. For example, processor 21 can be a general-purpose central processing unit (CPU) or other general-purpose processors. Among them, the general-purpose processor can be a microprocessor or any conventional processor.

[0050] As one embodiment, processor 21 may include one or more CPUs, for example Figure 2 CPU 0 and CPU 1 are shown in the diagram.

[0051] The memory 22 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0052] In one possible implementation, the memory 22 can exist independently of the processor 21. The memory 22 can be connected to the processor 21 via a bus 24 and is used to store instructions or program code. When the processor 21 calls and executes the instructions or program code stored in the memory 22, it can implement the cell handover method provided in the following embodiments of the present invention.

[0053] In another possible implementation, the memory 22 can also be integrated with the processor 21.

[0054] Communication interface 23 is used for connecting the communication device to other devices via a communication network, such as Ethernet, wireless access network, wireless local area network (WLAN), etc. Communication interface 23 may include a receiving unit for receiving data and a transmitting unit for sending data.

[0055] Bus 24 can be an industry standard architecture (ISA) bus, a peripheral component interconnect (PCI) bus, or an extended industry standard architecture (EISA) bus, etc. This bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 2 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0056] Figure 3 Another hardware structure of the communication device in an embodiment of the present invention is shown. For example... Figure 3 As shown, the communication device may include a processor 31 and a communication interface 32. The processor 31 is coupled to the communication interface 32.

[0057] The functions of processor 31 can be referred to in the description of processor 21 above. In addition, processor 31 also has a storage function, and can perform the functions of memory 22 mentioned above.

[0058] The communication interface 32 is used to provide data to the processor 31. The communication interface 32 can be an internal interface of the communication device or an external interface of the communication device (equivalent to communication interface 23).

[0059] It should be pointed out that, Figure 2 (or Figure 3 The structure shown in the diagram does not constitute a limitation on the communication device, except... Figure 2 (or Figure 3 In addition to the components shown in the diagram, the communication device may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0060] The cell handover method provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0061] Combination Figure 1 ,like Figure 4 As shown, the cell handover method provided in this application embodiment can be applied to cell handover device 103. The cell handover method includes:

[0062] S401. The cell handover device obtains the terminal's travel distance and the number of handovers between multiple first cells corresponding to the first frequency point.

[0063] The first frequency point is the service frequency point of the terminal.

[0064] Specifically, during the process of a terminal obtaining service by transmitting signals at the first frequency, frequent cell handovers may occur due to co-channel interference or changes in the cell covering the terminal's location caused by the terminal's rapid movement. Therefore, before determining whether a terminal is transmitting co-channel interference, it is necessary to collect the terminal's movement distance and the number of handovers at the service frequency.

[0065] It is easy to understand that the distance the terminal moves within a preset monitoring period can also be expressed as the terminal's moving speed.

[0066] In one feasible approach, the terminal can monitor its own mobility and network status at a preset monitoring period, obtaining the mobility distance and handover count. The terminal can then write the mobility distance and handover count into a measurement report and send the report to the cell handover equipment. Correspondingly, the cell handover equipment can read the mobility distance and handover count from the measurement report.

[0067] S402. When the moving distance is less than the preset distance and the number of handovers is greater than the preset number of handovers, the cell handover device determines the target second cell corresponding to the second frequency point.

[0068] The second frequency point is a frequency point different from the first frequency point.

[0069] Specifically, if the movement distance is less than a preset distance, it indicates that the terminal's location has not changed significantly, and the probability of changes in the cell covering the terminal's location is low. However, if the number of handovers exceeds a preset number, it can be assumed that the terminal is switching between multiple co-frequency cells in the same area. This area may contain multiple co-frequency cells with similar network quality, but no dominant cell, leading to co-frequency interference. In this case, the problem can be resolved by instructing the terminal to establish a communication connection with a cell of a different frequency, with the cell handover equipment identifying the cell with a different frequency than the serving frequency.

[0070] In one possible implementation, the cell handover device can receive measurement reports from the terminal for each preset monitoring period, read the movement distance and the number of handovers, and then compare the movement distance with the preset distance and the number of handovers with the preset number of handovers.

[0071] In another possible implementation, after collecting the movement distance in each preset monitoring cycle, the terminal can determine its own movement type. Specifically, when the movement distance is greater than or equal to a preset distance, the movement type is fast movement; conversely, when the movement distance is less than the preset distance, the movement type is slow movement.

[0072] After collecting the number of handovers in each preset monitoring cycle, the terminal can determine its own handover type. When the number of handovers exceeds the preset number, the handover type is frequent handover. Conversely, when the number of handovers is less than or equal to the preset number, the handover type is stable.

[0073] When a terminal determines that it is both a slow-moving and frequent-handover type, it sends a measurement report to the cell handover equipment. This can effectively reduce the occupation of network transmission resources and the computing resources of the cell handover equipment, and improve the processing efficiency of the cell handover equipment.

[0074] Furthermore, the terminal can monitor the number of handovers after determining that it is a slow-moving type, or monitor the distance traveled after determining that it is a frequent-handing type. This can improve the terminal's data collection efficiency and further improve resource utilization.

[0075] In one possible implementation, the method by which the cell handover device determines the target second cell corresponding to the second frequency point may include: the cell handover device can search the terminal's serving cell through the base station to see if there are adjacent inter-frequency cells (i.e., at least one second cell for the second frequency point). When at least one second cell exists, it can send a measurement control message to the terminal. The measurement control message includes: frequency point information of the second frequency point, and cell identifiers of at least one second cell. In response to the measurement control message, the terminal measures the network quality of the at least one second cell.

[0076] When the network quality of any one of the at least two second cells meets the anti-interference conditions, the terminal can designate any one of the second cells as the target second cell and return this information to the cell handover equipment. Alternatively, the terminal can return the network quality measurement results to the cell handover equipment, which will then determine whether any one of the second cells meets the anti-interference conditions and designate it as the target second cell.

[0077] Optionally, the cell identifier can be a physical cell identifier (PCI), an evolved UTRAN cell global identifier (ECGI), a cell identity (CID), etc.

[0078] S403, The cell handover equipment instructs the terminal to establish a communication connection with the target second cell.

[0079] In one possible implementation, the cell handover device can send a handover instruction message to the terminal and the base station, so that the base station can complete the resource preparation of the target second cell, and then the terminal responds to the handover instruction message to hand over from the currently connected first cell to the target second cell.

[0080] The technical solution provided by the above embodiments brings at least the following beneficial effects: As shown in S401-S403, the terminal's moving distance and the number of handovers between multiple first cells corresponding to the first frequency point can be obtained. The first frequency point is the terminal's serving frequency point. When the moving distance is less than a preset distance and the number of handovers is greater than a preset number, a target second cell corresponding to the second frequency point is determined, and the terminal is instructed to establish a communication connection with the target second cell. The second frequency point is a frequency point different from the first frequency point.

[0081] As shown above, when the moving distance is less than the preset distance and the number of handovers is greater than the preset number, it indicates that the terminal is experiencing co-channel interference at the current cell's serving frequency. In this case, the terminal can be instructed to establish a communication connection with a cell of a different frequency, thus enabling the terminal to avoid co-channel interference at its original frequency. Compared to general methods, this application can avoid changing the current network operating parameters, reducing control difficulty and effectively solving the problem of co-channel interference between cells.

[0082] In one alternative embodiment, in Figure 4 Based on the illustrated method embodiments, this embodiment provides a possible implementation method, combined with Figure 4 ,like Figure 5 As shown in S402, the method for the cell handover equipment to determine the target second cell corresponding to the second frequency point includes:

[0083] S501, the cell handover equipment obtains network quality measurement values ​​of multiple second cells corresponding to the second frequency point.

[0084] It should be noted that the multiple second cells and multiple first cells in the embodiments of this application can be different cells within the coverage area of ​​the same base station, or they can be different cells within the coverage area of ​​different base stations.

[0085] Optionally, the network quality measurement value can be the reference signal receiving power (RSRP) measured by the terminal within a preset measurement time hysteresis, or it can be the reference signal receiving quality (RSRQ) measured by the terminal.

[0086] In one possible implementation, the cell handover device can instruct the base station to send a measurement control message to the terminal, and the terminal responds to the measurement control message to measure the network quality of multiple second cells.

[0087] The base station can send measurement configuration messages to the terminal through the measConfig information element and s-Measure information element carried in the radio resource control connection reconfiguration (RRC Connection Reconfiguration) message.

[0088] S502. The cell handover equipment determines the target second cell as the second cell that meets the preset anti-interference conditions based on the network quality measurement values ​​of multiple second cells.

[0089] Optionally, the preset anti-interference condition may include: the network quality measurement value is greater than the preset measurement value. It is easy to understand that when the preset measurement value is the second highest network quality measurement value among multiple second cells, the network quality measurement value being greater than the preset measurement value can be understood as the network quality measurement value being the highest. In this case, the preset anti-interference condition is met, meaning the second cell with the best network quality among multiple second cells is selected as the target second cell.

[0090] The technical solution provided by the above embodiments brings at least the following beneficial effects: As shown in S501-S502, after the cell handover device obtains the network quality measurement values ​​of multiple second cells corresponding to the second frequency point, it can determine the second cell that meets the preset anti-interference conditions as the target second cell based on the network quality measurement values ​​of the multiple second cells. This application provides a method for determining the cell to be handed over by the terminal from multiple inter-frequency cells, which can realize the terminal handover to an inter-frequency cell.

[0091] Furthermore, to avoid co-channel interference issues for the terminal in the second frequency segment, in S502, the method by which the cell handover device determines the target second cell as the second cell that meets the preset anti-interference conditions based on the network quality measurements of multiple second cells may include:

[0092] S1. The cell handover device identifies the second cell among multiple second cells whose network quality measurement value is greater than the preset measurement value as a candidate cell.

[0093] S2. The cell handover device identifies the second cell among multiple second cells other than the candidate cell whose network quality measurement value difference with the candidate cell is less than or equal to a preset difference as the interfering cell of the candidate cell.

[0094] S3. When a candidate cell meets the preset conditions, the cell handover device will identify the candidate cell as the target second cell.

[0095] Specifically, a network quality measurement value greater than a preset measurement value indicates that the candidate cell has good network quality. A difference between network quality measurements less than or equal to a preset difference indicates that the network quality is similar, which may lead to co-channel interference.

[0096] Optionally, preset conditions may include: the number of interfering cells is less than a preset value.

[0097] If the number of interfering cells in the candidate cell is less than the preset value, it means that the network quality of the candidate cell is good and the probability of co-channel interference is low. In this case, the candidate cell can be determined as the target second cell for the terminal to be handed over.

[0098] For example, terminal A is in service mode, enables positioning, and monitors its own movement and handover events. Within a preset 15-second period, terminal A moves 2 meters, which is less than the preset distance of 30 meters, classifying terminal A as a slow-moving type. Simultaneously, within the preset 15-second period, terminal A performs 10 intra-frequency handovers, exceeding the preset number by 5, thus terminal A self-assesses itself as a frequent-handover type. Terminal A reports a measurement report. The cell handover equipment determines that terminal A's serving cell B is configured with a neighboring cell of frequency 300 and sends measurement control information to terminal A. Upon receiving the measurement control information, terminal A initiates measurement of the neighboring cell of frequency 300 according to the configuration instructions. The neighboring cell C of frequency 300 meets the preset anti-interference conditions in the measurement control. The network quality measurement value of inter-frequency neighbor cell c is -90dBm, which is greater than the preset measurement value of -105dBm. It is the cell with the best network quality within frequency point 300, and there is no second strongest neighbor cell within frequency point 300 that meets the preset difference (3dB). That is, cell c is the dominant coverage cell within frequency point 300. Terminal a immediately reports inter-frequency neighbor cell c to the cell handover equipment. The cell handover equipment instructs terminal a to hand over from serving cell b to inter-frequency neighbor cell c.

[0099] It should be noted that among multiple second cells, there may be multiple second cells with network quality measurements greater than the preset measurement value; that is, the number of candidate cells can be one or more. When there are multiple candidate cells, there may also be multiple candidate cells that satisfy the condition that the number of interfering cells is less than the preset value. In this case, the preset conditions may also include: the number of schedulable network resources of the candidate cells is greater than the preset number, the terminal supports the communication protocol of the candidate cells, and the service scope of the candidate cells meets the service requirements of the terminal, etc.

[0100] The technical solution provided by the above embodiments brings at least the following beneficial effects: As shown in S1-S3, the cell handover device can determine the second cell among multiple second cells whose network quality measurement value is greater than a preset measurement value as a candidate cell, and determine the second cell among multiple second cells other than the candidate cell whose network quality measurement value difference with the candidate cell is less than or equal to a preset difference as an interfering cell of the candidate cell. When the candidate cell meets the preset conditions, the cell handover device can determine the candidate cell as the target second cell, wherein the preset conditions include: the number of interfering cells is less than a preset value. This application provides a method for determining the cell to be handed over by the terminal, which can avoid the problem of co-channel interference still existing at the second frequency point, reduce the number of handovers of the terminal, and effectively improve the anti-interference effect.

[0101] In one alternative embodiment, in Figure 4 or Figure 5 Based on the illustrated method embodiments, this embodiment provides a possible implementation method, combined with Figure 4 ,like Figure 6 As shown, prior to S403, the cell handover method also included:

[0102] S601. The cell handover equipment determines the target quantity of network resources required by the terminal based on the service information pre-registered by the terminal.

[0103] Optionally, the service information may include: the service level of the terminal registration, the service type, the network type, etc.

[0104] Optionally, network resources include: transmission resources, storage resources, computing resources, and other resources used to provide business services to terminals.

[0105] In one feasible approach, the cell handover device can establish a mapping relationship between service information and the required amount of network resources by using the service information of any terminal within a historical time period and the corresponding network resources it occupies. Then, the cell handover device can read this mapping relationship and determine the target amount of network resources corresponding to the pre-registered service information of the terminal.

[0106] S602. The cell handover device sends a handover instruction message to the base station to which the target second cell belongs.

[0107] The handover instruction message is used to instruct the base station to schedule the target number of network resources in the target second cell.

[0108] In one possible implementation, the base station responds to the handover instruction message, schedules the target number of network resources in the target second cell, and sends a readiness completion message to the terminal via the base station.

[0109] Furthermore, in response to the handover instruction message, the base station can schedule a target number of network resources in the target second cell within a preset time.

[0110] When the number of available network resources in the target second cell is less than the target number within a preset time, the base station sends a preparation failure message to the terminal.

[0111] The technical solution provided by the above embodiments brings at least the following beneficial effects: As shown in S601-S602, the cell handover device can determine the target number of network resources required by the terminal based on the service information pre-registered by the terminal, and then send a handover instruction message to the base station to which the target second cell belongs, so that the base station can schedule the target number of network resources in the target second cell. In this way, when the terminal performs cell handover, a sufficient number of network resources have been prepared in advance in the target second cell, which can improve the service continuity of the terminal, shorten the cell handover time, and thus improve the efficiency of cell handover.

[0112] The foregoing mainly describes the solutions provided by the embodiments of this application from a methodological perspective. To achieve the above functions, it includes corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should readily recognize that, based on the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0113] This application embodiment can divide the cell handover device into functional modules according to the above method example. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. Optionally, the module division in this application embodiment is illustrative and only represents one logical functional division; other division methods may be used in actual implementation.

[0114] like Figure 7 The diagram shown is a structural schematic of a cell handover device provided in an embodiment of this application. This cell handover device can be used to perform the cell handover method described above. Figure 7 The cell handover device shown includes: an acquisition unit 701, a determination unit 702, and an indication unit 703.

[0115] The acquisition unit 701 is used to acquire the terminal's travel distance and the number of handovers between multiple first cells corresponding to a first frequency point; the first frequency point is the terminal's serving frequency point. For example, combined with... Figure 4 The acquisition unit 701 is used to execute S401.

[0116] The determining unit 702 is used to determine the target second cell corresponding to the second frequency point when the moving distance is less than a preset distance and the number of handovers is greater than a preset number; the second frequency point is a frequency point different from the first frequency point. For example, combined with Figure 4 Unit 702 is used to execute S402.

[0117] Instruction unit 703 is used to instruct the terminal to establish a communication connection with the target second cell. For example, in conjunction with... Figure 4 The instruction unit 703 is used to execute S403.

[0118] Optionally, the determining unit 702 is specifically used for: acquiring network quality measurement values ​​of multiple second cells corresponding to the second frequency point; and determining, based on the network quality measurement values ​​of the multiple second cells, the second cell that meets the preset anti-interference conditions as the target second cell. For example, combined with... Figure 5 Unit 702 is used to execute S501-S502.

[0119] Optionally, the determining unit 702 is specifically used to: determine the second cell among multiple second cells whose network quality measurement value is greater than a preset measurement value as a candidate cell; determine the second cell among multiple second cells other than the candidate cell whose network quality measurement value difference with the candidate cell is less than or equal to a preset difference as an interfering cell of the candidate cell; when the candidate cell meets preset conditions, determine the candidate cell as the target second cell; the preset conditions include: the number of interfering cells is less than a preset value. For example, combined with Figure 5 Unit 702 is used to execute S1-S3.

[0120] Optionally, the indicating unit 703 is further configured to: determine the target quantity of network resources required by the terminal based on the service information pre-registered by the terminal; send a handover instruction message to the base station to which the target second cell belongs; the handover instruction message is used to instruct the base station to schedule the target quantity of network resources in the target second cell. For example, in combination with Figure 6 The instruction unit 703 is used to execute S601-S602.

[0121] This application also provides a computer-readable storage medium, which includes computer-executable instructions. When the computer-executable instructions are run on the computer, the computer performs the cell handover method as provided in the above embodiments.

[0122] This application also provides a computer program that can be directly loaded into a memory and contains software code. After being loaded and executed by a computer, the computer program can implement the cell handover method provided in the above embodiments.

[0123] Those skilled in the art will recognize that, in one or more of the examples above, the functions described in this invention can be implemented using hardware, software, firmware, or any combination thereof. When implemented in software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer-readable storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media can be any available medium accessible to a general-purpose or special-purpose computer.

[0124] Through the above description of the embodiments, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0125] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and other division methods may exist in actual implementation. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms. Units described as separate components may or may not be physically separate; components shown as units may be one physical unit or multiple physical units, i.e., they may be located in one place or distributed in multiple different places. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0126] Furthermore, the functional units in the various embodiments of this invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiments of this application, in essence, or the part that contributes to the general technology, or all or part of the technical solution, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0127] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A cell handover method, characterized in that, include: The distance the terminal travels and the number of handovers the terminal makes between multiple first cells corresponding to the first frequency point are obtained. The first frequency point is the service frequency point of the terminal; Based on the travel distance, the travel type of the terminal is determined; wherein, when the travel distance is less than a preset distance, the travel type is slow travel. Based on the number of switching attempts, the switching type of the terminal is determined; wherein, when the number of switching attempts is greater than a preset number, the switching type is frequent switching. When the terminal's mobility type is slow mobility and its handover type is frequent handover, the target second cell corresponding to the second frequency point is determined; the second frequency point is a frequency point different from the first frequency point. The terminal is instructed to establish a communication connection with the target second cell.

2. The method according to claim 1, characterized in that, Determining the target second cell corresponding to the second frequency point includes: Obtain network quality measurement values ​​of multiple second cells corresponding to the second frequency point; Based on the network quality measurements of the plurality of second cells, the second cell that meets the preset anti-interference conditions is determined as the target second cell.

3. The method according to claim 2, characterized in that, The step of determining the target second cell as the second cell that meets the preset anti-interference conditions based on the network quality measurement values ​​of the plurality of second cells includes: Among the plurality of second cells, the second cell whose network quality measurement value is greater than the preset measurement value is determined as a candidate cell; Among the plurality of second cells other than the candidate cell, the second cell whose difference from the network quality measurement value of the candidate cell is less than or equal to a preset difference is determined as the interfering cell of the candidate cell; When the candidate cell meets the preset conditions, the candidate cell is determined as the target second cell; the preset conditions include: the number of interfering cells is less than a preset value.

4. The method according to any one of claims 1-3, characterized in that, Before instructing the terminal to establish a communication connection with the target second cell, the method further includes: Based on the pre-registered service information of the terminal, determine the target quantity of network resources required by the terminal; A handover instruction message is sent to the base station to which the target second cell belongs; the handover instruction message is used to instruct the base station to schedule the target number of network resources in the target second cell.

5. A cell handover device, characterized in that, include: Acquisition unit, determination unit, and indication unit; The acquisition unit is used to acquire the moving distance of the terminal and the number of handovers between multiple first cells corresponding to the first frequency point. The first frequency point is the service frequency point of the terminal; The determining unit is configured to determine the movement type of the terminal based on the movement distance; wherein, when the movement distance is less than a preset distance, the movement type is slow movement; and to determine the switching type of the terminal based on the number of switching attempts; wherein, when the number of switching attempts is greater than a preset number of switching attempts, the switching type is frequent switching. The determining unit is further configured to determine the target second cell corresponding to the second frequency point when the terminal's mobility type is slow mobility and its handover type is frequent handover; the second frequency point is a frequency point different from the first frequency point; The instruction unit is used to instruct the terminal to establish a communication connection with the target second cell.

6. The cell handover device according to claim 5, characterized in that, The determining unit is specifically used for: Obtain network quality measurement values ​​of multiple second cells corresponding to the second frequency point; Based on the network quality measurements of the plurality of second cells, the second cell that meets the preset anti-interference conditions is determined as the target second cell.

7. The cell handover device according to claim 6, characterized in that, The determining unit is specifically used for: Among the plurality of second cells, the second cell whose network quality measurement value is greater than the preset measurement value is determined as a candidate cell; Among the plurality of second cells other than the candidate cell, the second cell whose difference from the network quality measurement value of the candidate cell is less than or equal to a preset difference is determined as the interfering cell of the candidate cell; When the candidate cell meets the preset conditions, the candidate cell is determined as the target second cell; The preset conditions include: the number of interfering cells is less than a preset value.

8. The cell handover device according to any one of claims 5-7, characterized in that, The indicating unit is further configured to: Based on the pre-registered service information of the terminal, determine the target quantity of network resources required by the terminal; A handover instruction message is sent to the base station to which the target second cell belongs; the handover instruction message is used to instruct the base station to schedule the target number of network resources in the target second cell.

9. A cell handover device, characterized in that, It includes a memory and a processor; the memory is used to store computer execution instructions, and the processor is connected to the memory via a bus; when the cell handover device is running, the processor executes the computer execution instructions stored in the memory to cause the cell handover device to perform the cell handover method as described in any one of claims 1-4.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes computer-executable instructions that, when executed on a computer, cause the computer to perform the cell handover method as described in any one of claims 1-4.

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