CN117202282A

CN117202282A - Cell switching method and device based on wireless fingerprint library

Info

Publication number: CN117202282A
Application number: CN202210609034.5A
Authority: CN
Inventors: 陈怡�; 赵晗; 崔银晓
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2023-12-08

Abstract

The invention discloses a cell switching method and a device based on a wireless fingerprint library, and relates to the technical field of communication, wherein the method comprises the following steps: performing dynamic grid division on a service cell included in each network device, and acquiring candidate grids and grid indexes of the candidate grids included in the service cell; determining a target grid index from the grid indexes according to the measurement report MRO file of the original type corresponding to the serving cell; recording measurement report data in an MRO file in a target grid indexed by a target grid index, and dynamically generating a wireless fingerprint library of a serving cell; and transmitting the wireless fingerprint library of the candidate serving cells affiliated to the network equipment for cell switching. The method and the device can construct a wireless fingerprint library which aims at a large number of different network devices and can be periodically and dynamically adjusted, instruct the network devices to perform measurement-free blind handover of the service cell, reduce the overhead caused by real-time measurement of the terminal devices and avoid service interruption caused by measurement of the terminal devices.

Description

Cell switching method and device based on wireless fingerprint library

Technical Field

The disclosure relates to the technical field of communication, in particular to a cell switching method and device based on a wireless fingerprint library.

Background

When the inter-frequency or inter-system switching is executed, the terminal equipment needs to execute a measurement task at intervals of a repetition period (gap), and switching judgment is carried out based on a real-time measurement result reported by the terminal equipment, so that the measurement can cause the short interruption of the service of the terminal equipment and an original service cell, and a great burden is brought to the terminal equipment and network equipment. Therefore, how to perform measurement-free blind handover of a serving cell in a system and among systems, reducing the overhead brought by real-time measurement of terminal equipment, avoiding service interruption caused by terminal measurement, and flexibly performing cell handover has become one of important research directions.

Disclosure of Invention

The disclosure provides a cell switching method and a device thereof based on a wireless fingerprint library.

According to a first aspect of the present disclosure, there is provided a cell handover method based on a wireless fingerprint library, the method being performed by an operation and maintenance center, comprising:

performing dynamic grid division on a service cell included in each network device, and acquiring candidate grids and grid indexes of the candidate grids included in the service cell;

determining a target grid index from the grid indexes according to the measurement report MRO file of the original type corresponding to the serving cell;

Recording measurement report data in an MRO file in a target grid indexed by a target grid index, and dynamically generating a wireless fingerprint library of a serving cell;

and acquiring candidate service cells affiliated to the network equipment aiming at each network equipment, and transmitting a wireless fingerprint library of the candidate service cells to the network equipment for cell switching.

According to the embodiment of the disclosure, a wireless fingerprint library aiming at a large number of different network devices can be constructed, the step length of the grid and the upper limit and the lower limit of the grid can be periodically and dynamically adjusted and configured, the network devices are instructed to perform measurement-free blind switching of the service cell, the overhead caused by real-time gap measurement of the terminal devices is reduced, service interruption caused by gap measurement of the terminal devices is avoided, and the flexibility of cell switching is improved.

According to a second aspect of the present disclosure, there is provided a cell handover method based on a wireless fingerprint library, the method being performed by a network device and comprising:

receiving a wireless fingerprint library sent by an operation maintenance center;

determining a target cell of a current service cell of the terminal equipment according to the wireless fingerprint library;

and switching the current serving cell to the target cell.

According to the embodiment of the disclosure, intra-system and inter-system measurement-free blind switching can be performed according to the wireless fingerprint library, so that the overhead caused by real-time gap measurement of the terminal equipment is reduced, service interruption caused by the terminal equipment in the gap measurement is avoided, and the efficiency and flexibility of cell switching are improved.

According to a third aspect of the present disclosure, there is provided a cell handover apparatus based on a wireless fingerprint library, the apparatus comprising:

the grid division module is used for carrying out dynamic grid division on the service cell included in each network device and obtaining the candidate grids and the grid indexes of the candidate grids included in the service cell;

the determining module is used for determining a target grid index from the grid indexes according to the measurement report MRO file of the original type corresponding to the service cell;

the generation module is used for recording measurement report data in the MRO file in a target grid indexed by the target grid index and dynamically generating a wireless fingerprint library of the service cell;

and the sending module is used for acquiring candidate service cells belonging to the network equipment aiming at each network equipment, and sending the wireless fingerprint library of the candidate service cells to the network equipment for cell switching.

According to a fourth aspect of the present disclosure, there is provided a cell switching device based on a wireless fingerprint library, wherein the device includes:

the receiving module is used for receiving the wireless fingerprint library sent by the operation maintenance center;

the determining module is used for determining a target cell of a current service cell of the terminal equipment according to the wireless fingerprint library;

And the switching module is used for switching the current service cell to the target cell.

According to a fifth aspect of the present disclosure, there is provided a communication device comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the wireless fingerprint library-based cell handover method of the first aspect of the present disclosure or to perform the wireless fingerprint library-based cell handover method of the second aspect of the present disclosure.

According to a sixth aspect of the present disclosure, there is provided a processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the wireless fingerprint library-based cell handover method of the first aspect of the present disclosure or to perform the wireless fingerprint library-based cell handover method of the second aspect of the present disclosure.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the disclosure, nor is it intended to be used to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following specification.

Drawings

The drawings are for a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:

fig. 1 is a flow chart of a wireless fingerprint library-based cell handover method according to an embodiment of the present disclosure;

fig. 2 is a flow chart of a wireless fingerprint library-based cell handover method according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of grid partitioning in accordance with an embodiment of the present disclosure;

fig. 4 is a flow chart of a wireless fingerprint library-based cell handover method according to an embodiment of the present disclosure;

fig. 5 is a flow chart of a wireless fingerprint library-based cell handover method according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of task states for one embodiment of the present disclosure;

fig. 7 is a flow chart of a wireless fingerprint library-based cell handover method according to an embodiment of the present disclosure;

fig. 8 is a flow chart of a wireless fingerprint library-based cell handover method according to an embodiment of the present disclosure;

fig. 9 is a flow chart of a wireless fingerprint library-based cell handover method according to an embodiment of the present disclosure;

fig. 10 is a flow chart of a cell handover method based on a wireless fingerprint library according to an embodiment of the disclosure;

fig. 11 is a schematic structural diagram of a cell switching device based on a wireless fingerprint library according to an embodiment of the present disclosure;

Fig. 12 is a schematic structural diagram of a cell switching device based on a wireless fingerprint library according to an embodiment of the present disclosure;

fig. 13 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure.

Detailed Description

In the embodiment of the invention, the term "and/or" describes the association relation of the association objects, which means that three relations can exist, for example, a and/or B can be expressed as follows: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "plurality" in the embodiments of the present disclosure means two or more, and other adjectives are similar thereto.

The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.

The embodiment of the disclosure provides a cell switching method and a cell switching device based on a wireless fingerprint library, which are used for performing measurement-free blind switching of a service cell in a system and among systems, reducing the overhead brought by real-time measurement of terminal equipment, avoiding service interruption caused by the measurement of the terminal, and improving the flexibility of cell switching.

The method and the device are based on the same disclosure, and because the principles of solving the problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and the repetition is not repeated.

The technical scheme provided by the embodiment of the disclosure can be suitable for various systems, in particular to a 5G system. For example, suitable systems may be global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal packet Radio service (general packet Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR), and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evloved Packet System, EPS), 5G system (5 GS) etc. may also be included in the system.

The terminal device according to the embodiments of the present disclosure may be a device that provides voice and/or data connectivity to a user, a handheld device with wireless connection functionality, or other processing device connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDAs), and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), user equipment (user device), and embodiments of the present disclosure are not limited.

The network device according to the embodiments of the present disclosure may be a base station, which may include a plurality of cells for providing services to terminals. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be operable to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiments of the present disclosure may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), and the like, which are not limited in the embodiments of the present disclosure. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Multiple-input Multiple-output (Multi Input Multi Output, MIMO) transmissions may each be made between a network device and a terminal device using one or more antennas, and the MIMO transmissions may be Single User MIMO (SU-MIMO) or Multiple User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of antenna combinations.

Fig. 1 is a flow chart of a wireless fingerprint library-based cell handover method according to an embodiment of the present disclosure. As shown in fig. 1, the method is performed by an operation and maintenance center, and includes:

s101, carrying out dynamic grid division on the service cell included in each network device, and obtaining the candidate grids and the grid indexes of the candidate grids included in the service cell.

An operation and maintenance center (Operation and Maintenance Center, OMC) refers to functional entities in the operation and maintenance system. In some implementations, each network device includes multiple serving cells, there may be multiple terminal devices within any one serving cell, and different terminal devices may have different wireless communication characteristics due to different coverage of the serving cell signals, such as different detected signal strengths or different situations where neighbor signals are received.

In order to achieve finer radio resource management and improve flexibility of cell handover, the operation and maintenance center performs dynamic grid division on the serving cell included in each network device, and in the embodiment of the present disclosure, configuration parameters may be periodically obtained, and optionally, the configuration parameters are configured parameter thresholds, for example, an RSRP step size control range upper limit, an RSRP step size control range lower limit, an RSRP upper limit, an RSRP lower limit, and so on. The serving cell is dynamically rasterized based on the configuration parameters, thereby predefining a grid index, wherein the grid index is used to uniquely identify one candidate grid.

For example, a reference signal received power (Reference Signal Receiving Power, RSRP) range of the serving cell, the RSRP ranges of the two strongest co-frequency neighbor cells, and the RSRP step sizes may be obtained according to configuration parameters. Firstly, according to the RSRP range of the serving cell and the RSRP ranges of two strongest same-frequency neighbor cells, the grid index range corresponding to the candidate grids in the serving cell is predefined, and then grid granularity is divided based on the RSRP step length, and the candidate grids and the grid indexes of the candidate grids included in the serving cell are obtained. The grid index includes one or more specific wireless communication features.

S102, determining a target grid index from the grid indexes according to the measurement report MRO file of the original type corresponding to the service cell.

And analyzing according to an original type of measurement report (Measurement Report of Original Type, MRO) file reported by the terminal equipment in the service cell to obtain measurement report ((Measurement Report, MR) data, wherein the measurement report data comprises a plurality of wireless communication characteristics of the terminal equipment, such as physical cell identification (Physical Cell Identifier, PCI) and reference signal receiving power (Reference Signal Receiving Power, RSRP) of the service cell, PCI and RSRP of the same-frequency strongest neighbor cell, RSRP and PCI of different-frequency neighbor cell and different-system neighbor cell, and the like.

In the embodiment of the disclosure, based on the PCI and RSRP of the serving cell, the PCI and RSRP of the strongest neighboring cell in the same frequency, and the PCI and RSRP of the strong neighboring cell in the same frequency contained in the measurement report data, the RSRP range where the grid index is located is identified, and the target grid index is determined from the grid index.

And S103, recording the measurement report data in the MRO file in a target grid indexed by the target grid index, and dynamically generating a wireless fingerprint library of the serving cell.

In the embodiment of the disclosure, when the operation maintenance center builds the wireless fingerprint library of the service cell, the operation maintenance center is performed based on the MRO files reported by each terminal device, and after the MRO files of the terminal device are acquired, the operation maintenance center updates the information in the grids in the wireless fingerprint library according to the measurement report data in the MRO files. That is, the measurement report data is recorded within the target grid indexed by the target grid index. In the embodiment of the disclosure, information such as RSRP, PCI and the like of a serving cell, a same-frequency neighbor cell, a different-frequency neighbor cell and a different-system neighbor cell is recorded under each target grid index.

Optionally, if the same target grid index has different records of multiple same neighboring cells, multiple RSRP intensities of the same neighboring cells are averaged, and only one average value is recorded, and optionally, the average value may take a value to a percentile.

It should be noted that, a large amount of data is required for constructing a wireless fingerprint library, so that in the process of generating the fingerprint library of the wireless fingerprint library, the MRO file reported by the terminal device in the preset time period needs to be obtained continuously periodically. In a preset time period, the operation maintenance center continuously analyzes the MRO file reported by the terminal equipment, records measurement report data in the MRO file in a target grid indexed by the target grid index, and can not generate a wireless fingerprint library until enough grid information is accumulated.

S104, for each network device, obtaining candidate service cells affiliated to the network device, and sending the wireless fingerprint library of the candidate service cells to the network device for cell switching.

Taking the example that the network device includes three candidate serving cells as an example for explanation, in the embodiment of the present disclosure, the wireless fingerprint libraries of the three candidate serving cells may be sent to the network device affiliated to the network device. In some implementations, the operation and maintenance center directly transmits the wireless fingerprint library of the candidate serving cell to the network device to which it belongs; in some implementations, the operation and maintenance center obtains an effectively updated fingerprint database data set of the wireless fingerprint database according to the target grid index of the candidate serving cell, the target grid indexed by the target grid index and the measurement report data, and sends the fingerprint database data set of the candidate serving cell to the network equipment affiliated to the fingerprint database data set.

In the embodiment of the disclosure, a service cell included in each network device is dynamically grid-divided, a candidate grid included in the service cell and a grid index of the candidate grid are obtained, and a target grid index is determined from the grid indexes according to an original type measurement report MRO file corresponding to the service cell; recording measurement report data in an MRO file in a target grid indexed by a target grid index, and dynamically generating a wireless fingerprint library of a serving cell; and acquiring candidate service cells affiliated to the network equipment aiming at each network equipment, and transmitting a wireless fingerprint library of the candidate service cells to the network equipment for cell switching. According to the embodiment of the disclosure, a wireless fingerprint library aiming at a large number of different network devices can be constructed, the step length of the grid and the upper limit and the lower limit of the grid can be periodically and dynamically adjusted and configured, the network devices are instructed to perform measurement-free blind switching of the service cell, the overhead caused by real-time gap measurement of the terminal devices is reduced, service interruption caused by gap measurement of the terminal devices is avoided, and the flexibility of cell switching is improved.

In some implementations, to reduce overhead and improve efficiency, a wireless fingerprint library task may be acquired based on the acquired task information, and task management may be performed on the wireless fingerprint library. The task management mode comprises task creation, task inquiry, task modification, task deletion, grid generation, task scheduling and the like, optionally, a new fingerprint library can be generated through task creation, when a wireless fingerprint library task is created, the information corresponding to a fingerprint library task information table, a task object (network equipment information) table and a fingerprint step length configuration table in the lasting design is used as input, the wireless fingerprint library task is executed, and the wireless fingerprint library can be generated, updated or transmitted.

Optionally, the task information includes a task name, a start-stop time of the task, a task state, a parameter threshold of the task, and a task object. The parameter threshold includes the upper and lower limits of RSRP, the upper and lower limits of RSRP step control range, and the step size of RSRP, etc. as shown in table 1.

In the embodiment of the application, the task object is a network equipment list. Alternatively, the existing wireless fingerprint library may be updated by task modification, task deletion, generating a grid, task management of task scheduling, different task management having different task identifications (Identity document, ID), optionally the fingerprint library task information table may be as shown in table 1.

TABLE 1

Optionally, in order to reduce the error, in the embodiment of the present disclosure, the same network device is not allowed to exist in two tasks as a task object, that is, when a certain network device has an unfinished task, a new task cannot be created for the certain network device. In the embodiment of the disclosure, the task object table is identified, so as to judge whether the network equipment is used as a task object. The task object table may be as shown in table 2.

TABLE 2

Sequence number

Field name

Field description

Type(s)

Length of

Allowing for empty

Default value

1

ID

Unique identifier

NUMBER

22

2

NE_TYPE

Network element type

VARchar

50

√

3

NE_ID

Network element ID

NUMBER

22

√

4

NE_DN

Network element DN

VARchar

50

√

5

NE_NAME

Network element friendly name

VARchar

50

√

6

TASK_ID

Task ID

NUMBER

22

√

Fig. 2 is a flow chart illustrating a cell handover method based on a wireless fingerprint library according to an embodiment of the disclosure. As shown in fig. 2, the method is performed by an operation and maintenance center, and includes:

s201, periodically acquiring configuration parameters, and comparing the configuration parameters with historical configuration parameters.

For example, the configuration parameter table may be obtained once every 15 minutes, in this embodiment of the present disclosure, the operation maintenance center may implicitly obtain the configuration parameters in a task management manner, obtain and execute a task of the wireless fingerprint library to obtain the configuration parameters, and if the configuration parameters change, it is indicated that the current grid division cannot meet the RSRP step length and the RSRP upper and lower limits of the wireless fingerprint library of the serving cell, and the grid granularity of the wireless fingerprint library needs to be updated, so that the wireless fingerprint library is flexibly generated, and the practicability of the wireless fingerprint library is improved. Alternatively, the configuration parameter table may be as shown in table 3.

TABLE 3 Table 3

In some implementations, the RSRP range default is set according to the inter-frequency handover band, the open measurement threshold (A2 threshold) is taken as an upper limit, the threshold of the inter-system probe is taken as a lower limit, i.e. RSRP subdivisions range is [ -120dBm, -90 dBm), and the step size defaults to 3dB. The A2 threshold is a measurement threshold, that is, if the RSRP value of the serving cell measured by the terminal device is smaller than the threshold, the terminal device starts pilot frequency measurement.

Comparing the current configuration parameters with the last configuration parameters, namely the historical configuration parameters, and judging whether the current configuration parameters and the historical configuration parameters have differences or not.

S202, if the configuration parameters are inconsistent with the historical configuration parameters, determining the Reference Signal Received Power (RSRP) range and the configured RSRP step length of the serving cell and the two strongest same-frequency neighbor cells of the serving cell according to the configuration parameters.

In order to further improve the efficiency of the grid division, in some implementations, if the configuration parameters are consistent with the historical configuration parameters, the result of the previous period of grid division is used as the candidate grid and the grid index of the candidate grid, that is, the dynamic grid division of the serving cell is not needed again.

If the configuration parameters are inconsistent with the historical configuration parameters, performing dynamic grid division on the serving cell according to the configuration parameters of the serving cell, and considering the situation that a plurality of common-frequency, different-frequency and different-system neighbor cells exist, in order to facilitate grid division, in the embodiment of the present disclosure, the serving cell is subjected to grid division according to the communication characteristics of the serving cell and the two strongest common-frequency neighbor cells of the serving cell, and the Reference Signal Received Power (RSRP) range and the configured RSRP step length of the serving cell and the two strongest common-frequency neighbor cells of the serving cell need to be obtained according to the configuration parameters.

S203, dynamic grid division is carried out on the serving cell according to the RSRP range and the RSRP step length.

Dividing the respective RSRP ranges of the serving cell and the two adjacent cells based on the RSRP step length, and acquiring the respective RSRP sub-ranges of the serving cell and the two adjacent cells. In the embodiment of the disclosure, taking the case that the RSRP ranges of the serving cell and the two neighboring cells are [ -120dBm, -90 dBm) and the step length is 3dB as an example, the RSRP range greater than or equal to-90 dBm is divided into 1 sub-range, the RSRP range less than-120 dBm is divided into 1 sub-range, and the step length is 3dBThe RSRP range of [ -120dBm, -90 dBm) is divided into 10 sub-ranges. Therefore, the RSRP range of the serving cell can be divided into 12 sub-ranges, and similarly, the RSRP ranges of two neighboring cells can be respectively divided into 12 sub-ranges, so that the total is 12 ³ The row candidate grids, i.e. 1728 row candidate grids, have corresponding grid indexes of 0-1727, that is, one grid index corresponds to one row of candidate grids, and each grid index records information such as RSRP, PCI and the like of a serving cell, a same-frequency neighbor cell, a different-frequency neighbor cell and a different-system neighbor cell. Wherein the two adjacent cells are two strongest same-frequency adjacent cells of the serving cell.

Alternatively, the fingerprint library grid index table may be as shown in Table 4. The primary serving cell in the table is the serving cell in the embodiment of the disclosure, the neighbor cell 1 is the first neighbor cell with smaller PCI in the two neighbor cells, and the neighbor cell 2 is the second neighbor cell with larger PCI in the two neighbor cells.

TABLE 4 Table 4

Optionally, after dynamic grid division is performed on the serving cell, the candidate grids included in the serving cell and the grid indexes of the candidate grids are obtained as shown in fig. 3.

In the embodiment of the disclosure, configuration parameters are periodically acquired, compared with historical configuration parameters, if the configuration parameters are inconsistent with the historical configuration parameters, the Reference Signal Received Power (RSRP) range and the configured RSRP step length of the serving cell and the two strongest same-frequency neighbor cells of the serving cell are determined according to the configuration parameters, and dynamic grid division is performed on the serving cell according to the RSRP range and the RSRP step length. The method and the device can improve the efficiency of grid division, reduce the overhead caused by real-time gap measurement of the terminal equipment, avoid service interruption caused by the gap measurement of the terminal equipment, instruct the network equipment to perform measurement-free blind switching of the service cell in the system and among the systems, improve the flexibility of cell switching and improve the practicability of the wireless fingerprint library.

In some implementations, considering that there are multiple co-frequency neighbors, different-frequency neighbors, and different-system neighbors, in order to facilitate improving efficiency, the grid index should be as small as possible. And adding the grid columns in the wireless fingerprint library according to the newly increased number so as to record and record the information of the newly increased inter-frequency neighbor cells and/or inter-system neighbor cells.

Fig. 4 is a flow chart of a wireless fingerprint library-based cell handover method according to an embodiment of the present disclosure. As shown in fig. 4, the method is performed by an operation and maintenance center, and includes:

s401, acquiring a first RSRP of a service cell, a physical cell identifier PCI of the service cell, RSRP of each of two adjacent cells and PCI of each of the two adjacent cells based on the MRO file.

Analyzing according to the MRO file reported by the terminal equipment in the service cell, and obtaining measurement report data, wherein the measurement report data comprises a first RSRP of the service cell, a physical cell identifier PCI of the service cell, RSRP of each of two adjacent cells and PCI of each of the two adjacent cells. Alternatively, the measurement report data may be identified by using an MR original data table, where an MR original data table header table is shown in table 5, and the co-frequency neighbor cell 1 is a neighbor cell with a smaller PCI in the two co-frequency neighbor cells, and the co-frequency neighbor cell 2 is a neighbor cell with a larger PCI in the two co-frequency neighbor cells.

TABLE 5

Alternatively, the MR raw data table is shown in table 6.

TABLE 6

S402, ordering the serving cell and the two neighbor cells based on the PCI of the serving cell and the PCI of each of the two neighbor cells.

In the embodiment of the disclosure, the serving cell is used as a cell previous to a first neighboring cell with smaller PCI in two neighboring cells, and the first neighboring cell is used as a cell previous to a second neighboring cell with larger PCI in the two neighboring cells.

S403, the grid index range indexed by the previous cell is reduced according to the RSRP of the current cell until a target grid index is determined from the grid indexes.

The first grid index is determined from the grid indexes according to the first RSRP of the serving cell, and the operation maintenance center can determine that the range of the first grid index is 144 according to the defined grid division and the RSRP of the serving cell, wherein a first RSRP index list of the serving cell is shown in table 7.

TABLE 7

According to the second RSRP of the first neighbor cell with smaller PCI in the two neighbor cells, the second grid index is determined from the first grid index, the range of the second grid index can be further determined to be 12 according to the second RSRP of the first neighbor cell in the MRO file of the same moment, and then the target grid index is determined from the second grid index according to the third RSRP of the second neighbor cell with larger PCI in the two neighbor cells, that is, the specific value of the target grid index can be finally determined according to the third RSRP of the second neighbor cell in the MRO file of the same moment. The RSRP index list of two neighboring cells is shown in table 8.

TABLE 8

In the embodiment of the disclosure, the serving cell and the two neighboring cells are ordered based on the PCIs of the serving cell and the PCIs of the two neighboring cells, and the grid index range indexed from the previous cell is narrowed according to the RSRP of the current cell until a target grid index is determined from the grid indexes. According to the embodiment of the disclosure, the wireless fingerprint library aiming at a large number of different network devices can be constructed, the step length of the grid and the upper limit and the lower limit of the grid can be periodically and dynamically adjusted and configured, the generation efficiency of the wireless fingerprint library is improved, the subsequent indication network devices are convenient to carry out measurement-free blind switching of the service cell, the overhead caused by real-time gap measurement of the terminal devices is reduced, the service interruption caused by the gap measurement of the terminal devices is avoided, and the flexibility of cell switching is improved.

Optionally, after determining the target grid index, recording the RSRP of the inter-frequency neighbor cell and the RSRP of the inter-system neighbor cell in the target grid indexed by the target grid index according to the respective PCI information of the inter-frequency neighbor cell and the inter-system neighbor cell, and dynamically generating the wireless fingerprint library of the serving cell. Optionally, if the same target grid index has different records of multiple same neighboring cells, multiple RSRP intensities of the same neighboring cells are averaged, and only one average value is recorded, and optionally, the average value may take a value to a percentile.

Fig. 5 is a flow chart of a wireless fingerprint library-based cell handover method according to an embodiment of the present disclosure. As shown in fig. 5, the method is performed by an operation and maintenance center, and includes:

s501, generating a downlink data set of the wireless fingerprint database according to the measurement report data of the candidate serving cell, the target grid index of the candidate serving cell and the target grid indexed by the target grid index of the candidate serving cell.

Optionally, the operation and maintenance center may generate the downlink data set of the wireless fingerprint database according to the measurement report data of the candidate serving cell, the target grid index of the candidate serving cell, and the target grid indexed by the target grid index of the candidate serving cell, and the network device updates the wireless fingerprint database based on the downlink data set.

Optionally, the operation maintenance center may further execute a wireless fingerprint library task, and acquire a data set issued by the wireless fingerprint library based on task information and the target grid index of the wireless fingerprint library task.

And S502, transmitting the downlink data set to network equipment comprising candidate service cells to perform cell switching.

Alternatively, the operation and maintenance center may assemble the downlink data into a downlink command, call the configuration module interface, and send the downlink data set to the network device including the candidate serving cell. After receiving the issuing data set, the network device can acquire corresponding raster data through the issuing data set, combine the raster data with the measurement report data into a wireless fingerprint database which is finally needed, and switch cells according to the wireless fingerprint database.

According to the embodiment of the disclosure, the task-based wireless fingerprint library can be constructed, the generation efficiency of the wireless fingerprint library is improved, the subsequent indication network equipment is convenient to perform measurement-free blind handover of the service cell, the overhead caused by real-time gap measurement of the terminal equipment is reduced, service interruption caused by the gap measurement of the terminal equipment is avoided, and the flexibility of cell handover is improved.

In some implementations, after the wireless fingerprint library is acquired, the MRO file sent by the terminal device in the serving cell is continuously and periodically acquired. For example, the MRO file is processed and parsed every 15 minutes to acquire measurement report data. That is, the data of all GNB network elements in the wireless fingerprint library task are analyzed, and in the analysis process, the required data are filtered according to the same-frequency neighboring cell PCI, the different-frequency neighboring cell PCI and the different-system neighboring cell PCI configured in the configuration file, and if not configured, all the same-frequency, different-frequency or different-system neighboring cell data are processed by default.

As shown in fig. 6, optionally, when the operation maintenance center builds or updates the wireless fingerprint library in a task management manner, the wireless fingerprint library task has different task states, optionally, the task states include an unexecuted state, an executing state, a suspension state and an ending state, where the initial state of the wireless fingerprint library task is the unexecuted state, and when the wireless fingerprint library task is periodically scheduled, for example, when the service cell is periodically grid-divided according to the configuration parameters, the task state is changed into the executing state, when the task information needs to be modified, the task state is changed into the suspension state from the executing state, and when the task information is changed into the executing state again, and when the task information is completed, the wireless fingerprint library task is changed into the ending state from the executing state after the execution of the task is completed or after the task ending time is reached.

Fig. 7 is a flow chart of a wireless fingerprint library-based cell handover method according to an embodiment of the present disclosure. As shown in fig. 7, the method is performed by a network device, comprising:

s701, receiving a wireless fingerprint library sent by an operation maintenance center.

The operation maintenance center refers to each functional entity in the operation maintenance system. In some implementations, each network device includes multiple serving cells, there may be multiple terminal devices within any one serving cell, and different terminal devices may have different wireless communication characteristics due to different coverage of the serving cell signals, such as different detected signal strengths or different situations where neighbor signals are received.

In order to achieve finer radio resource management and improve flexibility of cell switching, an operation maintenance center performs dynamic grid division on service cells included in each network device, acquires candidate grids included in the service cells and grid indexes of the candidate grids, records measurement report data in an MRO file in a target grid indexed by the target grid indexes, dynamically generates a wireless fingerprint library of the service cells, acquires candidate service cells belonging to the network device for each network device, and sends the wireless fingerprint library of the candidate service cells to the network device for cell switching.

Optionally, the network device includes one or more candidate serving cells, and in the embodiment of the disclosure, the network device receives the wireless fingerprint library of the three candidate serving cells sent by the operation maintenance center, taking the example that the network device includes three candidate serving cells as an example.

In the embodiment of the disclosure, information such as RSRP, PCI and the like of a serving cell, a same-frequency neighbor cell, a different-frequency neighbor cell and a different-system neighbor cell is recorded under each grid index of the wireless fingerprint library.

In some implementations, the operation and maintenance center directly transmits the wireless fingerprint library of the candidate serving cell to the network device affiliated to the operation and maintenance center, that is, the network device directly receives the wireless fingerprint library of the candidate serving cell transmitted by the operation and maintenance center; in some implementations, the operation and maintenance center obtains an effectively updated fingerprint database data set of the wireless fingerprint database according to the target grid index of the candidate serving cell, the target grid indexed by the target grid index and the measurement report data, and sends the fingerprint database data set of the candidate serving cell to the network device affiliated to the network device, that is, the network device receives the fingerprint database data set of the candidate serving cell and updates the wireless fingerprint database according to the fingerprint database data set.

S702, determining a target cell of a current service cell of the terminal equipment according to the wireless fingerprint library.

The network equipment manages the wireless resources of the terminal according to the wireless fingerprint library, judges the corresponding grid index according to the MRO data reported by the terminal equipment, and determines the target cell of the current service cell based on the wireless communication characteristics of the neighbor cell recorded in the grid indexed by the grid index. Alternatively, the cell information of the target cell may be obtained according to a fingerprint library result information table, which is shown in table 9.

TABLE 9

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S703, switching the current service cell to the target cell.

And the network equipment switches the current service cell of the terminal equipment to the target cell according to the fingerprint library result information table. Optionally, the target cell may be a co-frequency forest, a different-frequency neighbor or a different-system neighbor of the serving cell.

In the embodiment of the disclosure, a wireless fingerprint library sent by an operation maintenance center is received, a target cell of a current service cell of terminal equipment is determined according to the wireless fingerprint library, and the current service cell is switched to the target cell. According to the embodiment of the disclosure, intra-system and inter-system measurement-free blind switching can be performed according to the wireless fingerprint library, so that the overhead caused by real-time gap measurement of the terminal equipment is reduced, service interruption caused by the terminal equipment in the gap measurement is avoided, and the efficiency and flexibility of cell switching are improved.

Fig. 8 is a flow chart of a wireless fingerprint library-based cell handover method according to an embodiment of the present disclosure. As shown in fig. 8, the method is performed by a network device, comprising:

s801, a wireless fingerprint library sent by an operation maintenance center is received.

The description of step S801 may be referred to the relevant content in the above embodiment, and will not be repeated here.

S802, ordering the same-frequency neighbor cell grid, the different-frequency neighbor cell grid and the different-system neighbor cell grid in the wireless fingerprint library.

In order to improve communication quality, in the embodiment of the present disclosure, the order of identifying the grids in the wireless fingerprint library is a same-frequency neighboring cell, a different-frequency neighboring cell, and a different-system neighboring cell.

And S803, sequentially identifying grids in the wireless fingerprint library according to the sequence until a target cell meeting the switching condition corresponding to the grids is identified.

In some implementations, identifying a same-frequency neighbor cell grid in a wireless fingerprint library, and acquiring a signal quality average value, a signal overlapping coverage degree, an attempted switching frequency and a switching success frequency of a first candidate cell; acquiring a switching success rate according to the number of times of trial switching and the number of times of switching success; acquiring switching adaptation degree according to the switching success rate, the signal quality average value of the cell to be switched and the signal overlapping coverage degree; optionally, the handover success rate, the signal quality average value of the cell to be handed over, and the signal overlapping coverage degree may be weighted to obtain the handover adaptation degree, and if the handover adaptation degree is greater than a preset first handover threshold, the first candidate cell is determined to be a target cell that meets a preset handover condition.

In some implementations, if a first candidate cell meeting a preset condition does not exist in the same-frequency neighbor cell, identifying a different-frequency neighbor cell grid in the wireless fingerprint library, and acquiring the RSRP of a second candidate cell; and if the RSRP of the second candidate cell is larger than a preset second switching threshold value, judging the second candidate cell as a target cell meeting preset switching conditions.

In some implementations, if there is no second candidate cell satisfying the preset condition in the inter-frequency neighbor cell, continuing to identify the inter-system neighbor cell grid, obtaining the RSRP of the third candidate cell, if the difference between the RSRP of the third candidate cell and the RSRP of the second candidate cell is within the preset range, preferentially selecting the second candidate cell as the target cell, and if the difference between the RSRP of the third candidate cell and the RSRP of the second candidate cell is greater than the preset difference threshold, determining that the third candidate cell is the target cell satisfying the preset handover condition.

S804, switching the current service cell to the target cell.

The description of step S804 may be referred to the relevant content in the above embodiment, and will not be repeated here.

Fig. 9 is a flow chart of a wireless fingerprint library-based cell handover method according to an embodiment of the present disclosure. As shown in fig. 9, the method is performed by a network device, and includes:

and S901, receiving a data set sent by the operation maintenance center and issued by the wireless fingerprint database.

In some implementations, the operation and maintenance center may generate a downlink data set of the wireless fingerprint library according to the candidate serving cell measurement report data, the target grid index of the candidate serving cell, and the target grid indexed by the target grid index of the candidate serving cell, and the network device updates the wireless fingerprint library based on the downlink data set.

Optionally, the operation and maintenance center may perform task management on the generated wireless fingerprint library, and acquire and execute the wireless fingerprint library task to send the wireless fingerprint library. The task management mode comprises task scheduling, and optionally takes information corresponding to a fingerprint library task information table, a task object (network equipment information) table and a fingerprint step length configuration table in the persistent design as input.

The task information comprises a task name, start-stop time of a task, a task state, a parameter threshold of the task and a task object. The parameter threshold includes the upper and lower limits of RSRP, the upper and lower limits of RSRP step control range, and the step size of RSRP, etc. as shown in table 3.

The task object is a list of network devices. Alternatively, an existing wireless fingerprint library or a distributed data set may be sent through a task management manner of task scheduling, where different task management manners have different task identifications (Identity document, IDs), and optionally, a fingerprint library task information table may be as shown in table 1.

And the operation maintenance center acquires the issuing data set of the wireless fingerprint database based on the task information of the wireless fingerprint database task and the target grid index, and sends the issuing data set to the network equipment. The downlink data set mainly comprises measurement report data of the candidate serving cell, a target grid index of the candidate serving cell and a target grid indexed by the target grid index of the candidate serving cell.

The operation maintenance center can assemble the issued data into an issued command, call the configuration module interface, send the issued data set to the network equipment comprising the candidate service cell, and the network equipment receives the issued data set of the wireless fingerprint library sent by the operation maintenance center.

S902, dynamically updating the wireless fingerprint library according to the issuing data set of the wireless fingerprint library.

In some implementations, the network device receives the downlink data set and updates the wireless fingerprint library based on the candidate serving cell measurement report data in the downlink data set, the target grid index of the candidate serving cell, and the target grid indexed by the target grid index of the candidate serving cell.

Fig. 10 is a flowchart of a cell handover method based on a wireless fingerprint library according to an embodiment of the present disclosure. As shown in fig. 10, on the one hand, the operation and maintenance center performs dynamic grid division on the serving cell included in each network device according to the configuration parameters, and obtains the candidate grids included in the serving cell and the grid index of the candidate grids, and on the other hand, the operation and maintenance center obtains the MRO file sent by the terminal device in the serving cell. Further, the operation maintenance center determines a target grid index from the grid indexes based on the MRO file, records measurement report data in the MRO file in a target grid indexed by the target grid index, and dynamically generates a wireless fingerprint library of the serving cell. In the embodiment of the disclosure, the network device includes a plurality of service cells, the operation maintenance center constructs or updates the wireless fingerprint library in a task management manner, generates a downlink data set of the wireless fingerprint library according to the task ID, measurement report data of the service cells, the target grid index and the target grid indexed by the target grid index of the service cells, and sends the downlink data set to the network device, and the network device receives the downlink data set, updates the local fingerprint library according to the downlink data set, and further performs intra-system switching or inter-system switching according to the updated fingerprint library. The intra-system switching refers to switching the serving cell to a same-frequency neighboring cell or a different-frequency neighboring cell, and the inter-system switching refers to switching the serving cell to a different-system neighboring cell.

In some implementations, the wireless fingerprint library is built based on measurement reports of a large number of terminal devices over a long period of time, the OMC builds an initial fingerprint library based on periodic measurement report data, and picks out a wireless fingerprint library available for composition with stable signal strength information. The coverage signal of the network is basically stable, at a certain fixed position point under the cell, different terminal devices measure that the signal fluctuation of the service cell and the neighbor cell is not large, so that the information representing the specific position can be found out to serve as the grid index of the wireless fingerprint library, the current cell is divided into a plurality of grids, and the measurement results of the different frequencies and the neighbor cells of the different systems are recorded in the grids.

Fig. 11 is a schematic structural diagram of a cell switching device based on a wireless fingerprint library according to an embodiment of the present disclosure, and as shown in fig. 11, a cell switching device 1100 based on a wireless fingerprint library includes:

a grid dividing module 1110, configured to dynamically grid divide a serving cell included in each network device, and obtain a candidate grid and a grid index of the candidate grid included in the serving cell;

A determining module 1120, configured to determine a target grid index from the grid indexes according to the measurement report MRO file of the original type corresponding to the serving cell;

a generating module 1130, configured to record measurement report data in the MRO file in a target grid indexed by the target grid index, and dynamically generate a wireless fingerprint database of the serving cell;

a sending module 1140 is configured to obtain, for each network device, a candidate serving cell affiliated to the network device, and send a wireless fingerprint library of the candidate serving cell to the network device for cell handover.

In some implementations, the raster division module 1110 is further to:

periodically acquiring configuration parameters, and comparing the configuration parameters with historical configuration parameters;

if the configuration parameters are inconsistent with the historical configuration parameters, determining the Reference Signal Received Power (RSRP) range and the configured RSRP step length of the serving cell and the two strongest same-frequency neighbor cells of the serving cell according to the configuration parameters;

and carrying out dynamic grid division on the serving cell according to the RSRP range and the RSRP step length.

In some implementations, the raster division module 1110 is further to:

dividing respective RSRP ranges of a serving cell and two adjacent cells based on RSRP step length to obtain respective RSRP sub-ranges of the serving cell and the two adjacent cells;

And acquiring candidate grids and grid indexes of the candidate grids included in the serving cell based on the RSRP sub-ranges of the serving cell and the two adjacent cells.

In some implementations, the determining module 1120 is further configured to:

periodically acquiring an MRO file sent by terminal equipment in a service cell;

and analyzing the MRO file to obtain measurement report data.

In some implementations, the determining module 1120 is further configured to:

acquiring a first RSRP of a serving cell, a physical cell identifier PCI of the serving cell, RSRP of each of two adjacent cells and PCI of each of the two adjacent cells based on an MRO file;

ordering the serving cell and the two neighbor cells based on their respective PCIs;

and reducing the grid index range indexed by the previous cell according to the RSRP of the current cell until a target grid index is determined from the grid indexes.

In some implementations, the determining module 1120 is further configured to:

determining a first grid index from the grid indexes according to a first RSRP of the serving cell;

determining a second grid index from the first grid indexes according to the second RSRP of a first adjacent cell with smaller PCI in the two adjacent cells;

and determining a target grid index from the second grid indexes according to the third RSRP of the second adjacent cell with larger PCI in the two adjacent cells.

In some implementations, the generating module 1130 is further configured to:

if the MRO file comprises the newly added inter-frequency neighbor cells and/or inter-system neighbor cells, obtaining the newly added number of the inter-frequency neighbor cells and/or the inter-system neighbor cells;

and adding the grid columns in the wireless fingerprint library according to the newly added number.

In some implementations, the transmitting module 1140 is further configured to:

generating a transmitting data set of the wireless fingerprint database according to the measurement report data of the candidate service cell, the target grid index of the candidate service cell and the target grid indexed by the target grid index of the candidate service cell;

the downlink data set is sent to the network device including the candidate serving cell for cell switching.

In some implementations, the determining module 1120 is further configured to:

acquiring the RSRP of the inter-frequency neighbor cell and the RSRP of the inter-system neighbor cell according to the measurement report data in the MRO file;

recording the RSRP of the inter-frequency neighbor cell and the RSRP of the inter-system neighbor cell in a target grid indexed by a target grid index, and dynamically generating a wireless fingerprint library of the serving cell.

In some implementations, the wireless fingerprint library based cell switching apparatus 1100 further includes a task management module 1150 for:

acquiring a wireless fingerprint library task;

and executing the task of the wireless fingerprint library to generate, update or send the wireless fingerprint library.

Fig. 12 is a schematic structural diagram of a cell switching device based on a wireless fingerprint library according to an embodiment of the present disclosure, as shown in fig. 12, a cell switching device 1200 based on a wireless fingerprint library, including:

the receiving module 1210 is configured to receive a wireless fingerprint library sent by the operation maintenance center;

a determining module 1220, configured to determine, according to the wireless fingerprint database, a target cell of a current serving cell of the terminal device;

a handover module 1230 is configured to handover the current serving cell to the target cell.

In some implementations, the determining module 1220 is further to:

ordering the same-frequency adjacent cell grids and different-system adjacent cell grids in the wireless fingerprint library;

and sequentially identifying grids in the wireless fingerprint library according to the sequence until a target cell meeting the switching condition corresponding to the grids is identified.

In some implementations, the order in which the grids in the wireless fingerprint library are identified is co-frequency neighbors, inter-system neighbors.

In some implementations, the determining module 1220 is further to:

identifying the same-frequency neighbor cell grids in the wireless fingerprint library, and acquiring a signal quality average value, a signal overlapping coverage degree, trial switching times and switching success times of a first candidate cell;

acquiring a switching success rate according to the number of times of trial switching and the number of times of switching success;

acquiring switching adaptation degree according to the switching success rate, the signal quality average value of the cell to be switched and the signal overlapping coverage degree;

if the switching adaptation degree is larger than a preset first switching threshold value, the first candidate cell is judged to be a target cell meeting preset switching conditions.

In some implementations, the determining module 1220 is further to:

identifying different-frequency neighbor cell grids in the wireless fingerprint library, and acquiring RSRP of a second candidate cell;

and if the RSRP of the second candidate cell is larger than a preset second switching threshold value, judging the second candidate cell as a target cell meeting preset switching conditions.

In some implementations, the determining module 1220 is further to:

identifying grids of the neighboring cells of the different systems in the wireless fingerprint library, and obtaining RSRP of a third candidate cell;

If the difference between the RSRP of the third candidate cell and the RSRP of the second candidate cell is smaller than a preset difference threshold, the second candidate cell is judged to be a target cell meeting preset switching conditions.

In some implementations, the determining module 1220 is further to:

if the difference between the RSRP of the third candidate cell and the RSRP of the second candidate cell is larger than a preset difference threshold, the third candidate cell is judged to be a target cell meeting preset switching conditions.

In some implementations, the wireless fingerprint library-based cell switching apparatus 1200 further includes an updating module 1240 for:

receiving a transmitted data set of the wireless fingerprint library transmitted by the operation maintenance center;

and dynamically updating the wireless fingerprint library according to the issuing data group of the wireless fingerprint library.

As shown in fig. 13, an embodiment of the present disclosure further provides a communication device, further including:

transceiver 1300 for receiving and transmitting data under the control of processor 1310.

Where in FIG. 13, a bus architecture may comprise any number of interconnected buses and bridges, with various circuits of the one or more processors, specifically represented by processor 1310, and the memory, represented by memory 1320, being linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 1300 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 1310 is responsible for managing the bus architecture and general processing, and the memory 1320 may store data used by the processor 1310 in performing operations.

The processor 1310 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA), or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or the processor may employ a multi-core architecture.

The processor is used for executing the cell switching method based on the wireless fingerprint library, which is executed by the operation maintenance center and provided by the embodiment of the disclosure, or executing the cell switching method based on the wireless fingerprint library, which is executed by the network equipment, by calling the computer program stored in the memory. The processor and the memory may also be physically separate.

It should be noted that, the above device provided in the embodiment of the present disclosure can implement all the method steps implemented in the embodiment of the method, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the embodiment of the method are omitted herein.

In order to achieve the foregoing embodiments, the embodiments of the present disclosure provide a processor-readable storage medium storing a computer program for causing a processor to execute a wireless fingerprint library-based cell handover method performed by an operation and maintenance center provided by the embodiments of the present disclosure, or a wireless fingerprint library-based cell handover method performed by a network device.

It will be apparent to those skilled in the art that embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present disclosure without departing from the spirit or scope of the disclosure. Thus, the present disclosure is intended to include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

It should be noted that in the description of the present disclosure, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present disclosure, unless otherwise indicated, the meaning of "a plurality" is two or more.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present disclosure in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present disclosure.

It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.

Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.

Furthermore, each functional unit in the embodiments of the present disclosure may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.

The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present disclosure have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the present disclosure, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the present disclosure.

Claims

1. A method for cell handover based on a wireless fingerprint library, the method being performed by an operation and maintenance center and comprising:

performing dynamic grid division on a service cell included in each network device, and obtaining a candidate grid included in the service cell and a grid index of the candidate grid;

Determining a target grid index from the grid indexes according to the measurement report MRO file of the original type corresponding to the service cell;

recording measurement report data in the MRO file in a target grid indexed by the target grid index, and dynamically generating a wireless fingerprint library of the service cell;

and acquiring candidate service cells affiliated to the network equipment aiming at each network equipment, and sending the wireless fingerprint library of the candidate service cells to the network equipment for cell switching.

2. The method of claim 1, wherein dynamically rasterizing the serving cell included by each network device comprises:

3. The method of claim 2, wherein the dynamically rasterizing the serving cell according to the RSRP range and the RSRP step size comprises:

dividing the RSRP ranges of the serving cell and the two adjacent cells of the serving cell based on the RSRP step length to obtain the RSRP sub-ranges of the serving cell and the two adjacent cells of the serving cell;

and acquiring candidate grids included in the serving cell and grid indexes of the candidate grids based on the RSRP sub-ranges of the serving cell and two adjacent cells of the serving cell.

4. The method according to claim 1, wherein before determining the target grid index from the grid indexes according to the measurement report MRO file of the original type corresponding to the serving cell, the method further comprises:

and analyzing the MRO file to obtain measurement report data.

5. The method according to claim 1, wherein the determining a target grid index from the grid indexes according to the measurement report MRO file of the original type corresponding to the serving cell includes:

Acquiring a first RSRP of the service cell, a physical cell identifier PCI of the service cell, RSRP of each of two adjacent cells of the service cell and PCI of each of the two adjacent cells of the service cell based on the MRO file;

ordering the serving cell and two neighbor cells of the serving cell based on the PCI of the serving cell and the PCI of each of the two neighbor cells of the serving cell;

6. The method of claim 5, wherein the narrowing the range of the grid index indexed from the previous cell according to the RSRP of the current cell until the target grid index is determined from the grid indexes comprises:

determining a second grid index from the first grid indexes according to the second RSRP of a first adjacent cell with smaller PCI in two adjacent cells of the service cell;

and determining the target grid index from the second grid index according to the third RSRP of the second neighboring cell with larger PCI in the two neighboring cells of the service cell.

7. The method according to any one of claims 1-6, further comprising:

if the MRO file comprises the newly added different-frequency adjacent cells and/or different-system adjacent cells, obtaining the newly added number of the different-frequency adjacent cells and/or different-system adjacent cells;

and adding the grid columns in the wireless fingerprint library according to the newly added quantity.

8. The method according to any of claims 1-6, wherein said sending the wireless fingerprint library of the candidate serving cell to the network device for cell handover comprises:

generating a downlink data set of the wireless fingerprint database according to the measurement report data of the candidate service cell, the target grid index of the candidate service cell and the target grid indexed by the target grid index of the candidate service cell;

and sending the downlink data set to network equipment comprising the candidate service cell so as to carry out cell switching.

9. The method according to any one of claims 1-6, wherein the recording measurement report data in the MRO file within the target grid indexed by the target grid index dynamically generates a wireless fingerprint library of the serving cell, comprising:

recording the RSRP of the inter-frequency neighbor cell and the RSRP of the inter-system neighbor cell in a target grid indexed by the target grid index, and dynamically generating a wireless fingerprint library of the service cell.

10. The method according to any one of claims 1-6, wherein prior to dynamically rasterizing the serving cell included by each network device, further comprising:

acquiring a wireless fingerprint library task;

11. A method for cell handover based on a wireless fingerprint library, the method being performed by a network device and comprising:

receiving a wireless fingerprint library sent by the operation maintenance center;

and switching the current service cell to the target cell.

12. The method according to claim 11, wherein said determining a target cell of a current serving cell of the terminal device based on the wireless fingerprint repository comprises:

Sequencing the same-frequency neighbor cell grid, the different-frequency neighbor cell grid and the different-system neighbor cell grid in the wireless fingerprint library;

13. The method of claim 12, wherein the order in which the grids in the wireless fingerprint library are identified is co-frequency neighbor, inter-system neighbor.

14. The method according to claim 12 or 13, wherein the sequentially identifying the grids in the wireless fingerprint library until the target cell satisfying the handover condition corresponding to the grid is identified, includes:

acquiring a switching success rate according to the trial switching times and the switching success times;

acquiring a switching adaptation degree according to the switching success rate, the signal quality average value of the cell to be switched and the signal overlapping coverage degree;

And if the switching adaptation degree is larger than a preset first switching threshold value, judging that the first candidate cell is a target cell meeting preset switching conditions.

15. The method according to claim 12 or 13, wherein the sequentially identifying the grids in the wireless fingerprint library until the target cell satisfying the handover condition corresponding to the grid is identified, includes:

identifying the different-frequency neighbor cell grids in the wireless fingerprint library, and acquiring the RSRP of a second candidate cell;

and if the RSRP of the second candidate cell is larger than a preset second switching threshold value, judging that the second candidate cell is a target cell meeting preset switching conditions.

16. The method as recited in claim 15, further comprising:

identifying grids of neighboring cells of different systems in the wireless fingerprint library, and acquiring RSRP of a third candidate cell;

and if the difference value between the RSRP of the third candidate cell and the RSRP of the second candidate cell is smaller than a preset difference value threshold, judging that the second candidate cell is a target cell meeting preset switching conditions.

17. The method as recited in claim 16, further comprising:

And if the difference value between the RSRP of the third candidate cell and the RSRP of the second candidate cell is larger than a preset difference value threshold, judging that the third candidate cell is a target cell meeting preset switching conditions.

18. The method according to claim 12 or 13, further comprising:

receiving a data set sent by the operation maintenance center and issued by the wireless fingerprint library;

and dynamically updating the wireless fingerprint database according to the issuing data group of the wireless fingerprint database.

19. A cell switching device based on a wireless fingerprint library, the device comprising:

the grid division module is used for carrying out dynamic grid division on the service cell included in each network device, and obtaining the candidate grids included in the service cell and the grid indexes of the candidate grids;

a determining module, configured to determine a target grid index from the grid indexes according to an original type of measurement report MRO file corresponding to the serving cell;

And the sending module is used for acquiring candidate service cells affiliated to the network equipment aiming at each network equipment, and sending the wireless fingerprint library of the candidate service cells to the network equipment so as to carry out cell switching.

20. The apparatus of claim 19, wherein the raster division module is further configured to:

21. The apparatus of claim 20, wherein the raster division module is further configured to:

22. The apparatus of claim 19, wherein the means for determining is further configured to:

and analyzing the MRO file to obtain measurement report data.

23. The apparatus of claim 19, wherein the means for determining is further configured to:

24. The apparatus of claim 23, wherein the means for determining is further configured to:

25. The apparatus of any one of claims 19-24, wherein the generating module is further configured to:

26. The apparatus of any one of claims 19-24, wherein the transmitting module is further configured to:

27. The apparatus of any one of claims 19-24, wherein the determining module is further configured to:

28. The apparatus of claim 27, further comprising a task management module to:

acquiring a wireless fingerprint library task;

29. A cell switching device based on a wireless fingerprint library, the device comprising:

30. The apparatus of claim 29, wherein the means for determining is further configured to:

31. The apparatus of claim 30, wherein the order in which the grids in the wireless fingerprint library are identified is co-frequency neighbor, inter-system neighbor.

32. The apparatus of claim 30 or 31, wherein the determining module is further configured to:

33. The apparatus of claim 30 or 31, wherein the determining module is further configured to:

34. The apparatus of claim 33, wherein the determining module is further configured to:

35. The apparatus of claim 34, wherein the determining module is further configured to:

36. The apparatus of claim 30 or 31, further comprising an update module configured to:

37. A communication device, comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1 to 10 or to perform the method of any one of claims 11 to 18.

38. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to perform the method of any one of claims 1 to 10 or to perform the method of any one of claims 11 to 18.