CN111294811A - Cell capacity expansion method and network equipment - Google Patents
Cell capacity expansion method and network equipment Download PDFInfo
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- CN111294811A CN111294811A CN201811489438.5A CN201811489438A CN111294811A CN 111294811 A CN111294811 A CN 111294811A CN 201811489438 A CN201811489438 A CN 201811489438A CN 111294811 A CN111294811 A CN 111294811A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention discloses a cell capacity expansion method and network equipment, which are used for improving the capacity expansion effect of a cell. The cell capacity expansion method comprises the following steps: determining a coverage area of a cell to be expanded and at least one covered hot spot area, wherein the traffic volume of each hot spot area is greater than a first preset threshold; determining at least one different-frequency-band adjacent cell of the cell to be expanded; the frequency band corresponding to the different-frequency-band adjacent cell is different from the frequency band corresponding to the cell to be expanded; determining a different-frequency-band target expansion cell of the cell to be expanded from the at least one different-frequency-band adjacent cell according to the overlapping coverage of the at least one hot spot area and each different-frequency-band adjacent cell; and the overlapping coverage is used for indicating the occupation ratio of sampling points in the cell to be expanded.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a cell capacity expansion method and a network device.
Background
The wireless communication network comprises a plurality of terrestrial base stations which are accessible to a terminal device when the terminal device is located in a cell of a base station. As the number of terminal devices accessing the base station increases, the base station may not be able to carry more terminal devices for simultaneous communication, and in this case, the capacity expansion of the network is required.
An existing network capacity expansion method is to increase the frequency of a base station, that is, to increase the frequency points of signals transmitted/received by the base station, so that the base station can communicate with more terminal devices at the same time, thereby achieving the purpose of network capacity expansion. Currently, there is an independent antenna feeder coverage method for increasing the frequency of a base station, i.e., Radio Units (RUs) corresponding to different frequency bands are connected to different antennas respectively. The independent antenna feeder coverage mode is difficult to realize the same coverage area, namely, the same coverage area is difficult to realize, and the network expansion is performed by inquiring the different-frequency section cell matched with the network working parameters or the antenna acquisition data according to the originally set network working parameters (such as the azimuth angle of the antenna and the like) or the antenna acquisition data (such as the azimuth angle, the downward inclination angle and the like of the antenna initially acquired by the terminal equipment) as a reference basis.
However, the azimuth angle of the antenna may be changed, so that the accuracy of determining the matched pilot frequency cell by using the network working parameters or the data collected by the sky resources is low during cell expansion, and the expansion effect is poor.
Disclosure of Invention
The embodiment of the invention provides a cell capacity expansion method and network equipment, which are used for improving the capacity expansion effect of a cell.
In a first aspect, an embodiment of the present invention provides a cell capacity expansion method, where the cell capacity expansion method includes:
determining a coverage area of a cell to be expanded and at least one covered hot spot area, wherein the traffic volume of each hot spot area is greater than a first preset threshold;
determining at least one different-frequency-band adjacent cell of the cell to be expanded; the frequency band corresponding to the different-frequency-band adjacent cell is different from the frequency band corresponding to the cell to be expanded;
determining a different-frequency-band target expansion cell of the cell to be expanded from the at least one different-frequency-band adjacent cell according to the overlapping coverage of the at least one hot spot area and each different-frequency-band adjacent cell; and the overlapping coverage is used for indicating the occupation ratio of sampling points in the cell to be expanded.
In the embodiment of the present invention, a different-frequency target expansion cell of a cell to be expanded is further selected from at least one different-frequency neighboring cell according to an overlapping coverage between a hot spot area of the cell to be expanded, that is, an area with a large traffic volume, and at least one different-frequency neighboring cell of the cell to be expanded, that is, an occupation ratio of a sampling point in the cell to be expanded. Compared with the prior art that the different-frequency-band cells are matched through network working parameters or acquired data of sky resources, the method and the device for capacity expansion of the different-frequency-band neighbor cells determine the different-frequency-band neighbor cells according to the repeated coverage of the actual hot spot areas of the cells to be expanded and the different-frequency-band neighbor cells, so that the accuracy of the determined different-frequency-band neighbor cells is high, and the capacity expansion effect is improved.
Optionally, determining the coverage area of the cell to be expanded and at least one hot spot area covered by the cell to be expanded includes:
determining the coverage range of the cell to be expanded based on sampling points in a plurality of grids divided by measurement report MR data;
selecting at least one grid with sampling points larger than a second preset threshold from the plurality of grids;
and clustering the at least one grid to obtain the at least one hot spot region.
According to the embodiment of the invention, the Measurement Report (MR) data is divided, and the hot spot area is determined according to the number of the divided sampling points in each grid, namely the traffic in each grid, so that the method is more accurate.
Optionally, determining at least one different-frequency neighboring cell of the cell to be expanded includes:
aiming at each different-frequency-band adjacent cell of the cell to be expanded, determining the different-frequency switching times between each different-frequency-band adjacent cell and the cell to be expanded;
and determining the at least one different frequency band adjacent cell from a plurality of different frequency band adjacent cells of the cell to be subjected to capacity expansion according to the different frequency switching times.
Optionally, determining the at least one different-frequency-band neighboring cell from the multiple different-frequency-band neighboring cells of the cell to be extended according to the different-frequency switching times includes:
and determining the first N different-frequency-band adjacent cells with the maximum different-frequency switching times in the plurality of different-frequency-band adjacent cells as the at least one different-frequency-band adjacent cell, wherein N is a positive integer.
The embodiment of the invention can further select N different-frequency adjacent cells with strong correlation from a plurality of different-frequency adjacent cells of the cell to be expanded, namely the different-frequency adjacent cells frequently switched with the cell to be expanded, thereby preferentially selecting the N different-frequency adjacent cells with strong correlation when the cell to be expanded is expanded, and improving the expansion effect as much as possible.
Optionally, before determining a different-frequency-band target expansion cell from the at least one different-frequency-band neighboring cell according to the overlapping coverage of the at least one hot spot area and each different-frequency-band neighboring cell, the method further includes:
determining an overlapping coverage area of the at least one hot spot area and each different-frequency-band neighboring cell;
and acquiring the overlapping coverage degree of the at least one hot spot area and each different-frequency-band adjacent cell according to the occupation ratio of the sampling points in the overlapping coverage area in the cell to be expanded.
Optionally, determining an overlapping coverage area of the at least one hot spot area and each different-frequency-band neighboring cell includes:
aiming at any sampling point, respectively acquiring a first Reference Signal Received Power (RSRP) of the sampling point in each hot spot area and a second RSRP of the sampling point in each different-frequency-band adjacent cell;
and if the difference value between the first RSRP and the second RSRP is within a first preset range, determining that the area of any sampling point is the overlapping coverage area.
Optionally, determining a different-frequency-band target capacity expansion cell of the cell to be subjected to capacity expansion from the at least one different-frequency-band neighboring cell according to the overlapping coverage of the at least one hot spot area and each different-frequency-band neighboring cell, including:
and determining the first M different-frequency-band adjacent cells with the largest overlapping coverage in the at least one different-frequency-band adjacent cell as the different-frequency-band target expansion cell, wherein M is a positive integer.
In the embodiment of the invention, before the expansion of the cell to be expanded, an area with higher overlapping coverage with a hot spot area can be further selected from the N adjacent cells of the strong related pilot frequency section as a pilot frequency section target expansion cell of the cell to be expanded, so as to improve the expansion effect as much as possible.
In a second aspect, an embodiment of the present invention provides a network device, where the network device includes:
the first determining unit is used for determining the coverage area of the cell to be expanded and at least one covered hot spot area, and the traffic volume of each hot spot area is greater than a first preset threshold value;
a second determining unit, configured to determine at least one different-frequency-band neighboring cell of the cell to be expanded; the frequency band corresponding to the different-frequency-band adjacent cell is different from the frequency band corresponding to the cell to be expanded;
a third determining unit, configured to determine, according to overlapping coverage of the at least one hot spot area and each different-frequency-band neighboring cell, a different-frequency-band target expansion cell of the cell to be expanded from the at least one different-frequency-band neighboring cell; and the overlapping coverage is used for indicating the occupation ratio of sampling points in the cell to be expanded.
Optionally, the first determining unit is specifically configured to:
determining the coverage range of the cell to be expanded based on sampling points in a plurality of grids divided by measurement report MR data;
selecting at least one grid with sampling points larger than a second preset threshold from the plurality of grids;
and clustering the at least one grid to obtain the at least one hot spot region.
Optionally, the second determining unit is specifically configured to:
aiming at each different-frequency-band adjacent cell of the cell to be expanded, determining the different-frequency switching times between each different-frequency-band adjacent cell and the cell to be expanded;
and determining the at least one different frequency band adjacent cell from a plurality of different frequency band adjacent cells of the cell to be subjected to capacity expansion according to the different frequency switching times.
Optionally, the second determining unit is specifically configured to:
and determining the first N different-frequency-band adjacent cells with the maximum different-frequency switching times in the plurality of different-frequency-band adjacent cells as the at least one different-frequency-band adjacent cell, wherein N is a positive integer.
Optionally, the third determining unit is further configured to:
determining an overlapping coverage area of the at least one hot spot area and each different-frequency-band neighboring cell;
and acquiring the overlapping coverage degree of the at least one hot spot area and each different-frequency-band adjacent cell according to the occupation ratio of the sampling points in the overlapping coverage area in the cell to be expanded.
Optionally, the third determining unit is specifically configured to:
aiming at any sampling point, respectively acquiring a first Reference Signal Received Power (RSRP) of the sampling point in each hot spot area and a second RSRP of the sampling point in each different-frequency-band adjacent cell;
and if the difference value between the first RSRP and the second RSRP is within a first preset range, determining that the area of any sampling point is the overlapping coverage area.
Optionally, the third determining unit is specifically configured to:
and determining the first M different-frequency-band adjacent cells with the largest overlapping coverage in the at least one different-frequency-band adjacent cell as the different-frequency-band target expansion cell, wherein M is a positive integer.
In a third aspect, an embodiment of the present invention provides a network device, where the network device includes:
at least one processor, and
a memory coupled to the at least one processor;
wherein the memory stores instructions executable by the at least one processor, the at least one processor implementing the method of any one of the first aspect by executing the instructions stored by the memory.
In a fourth aspect, there is provided a computer storage medium having stored thereon a computer program which, when executed by a processor, implements the method of any of the first aspects.
In the embodiment of the present invention, a different-frequency target expansion cell of a cell to be expanded is further selected from at least one different-frequency neighboring cell according to an overlapping coverage between a hot spot area of the cell to be expanded, that is, an area with a large traffic volume, and at least one different-frequency neighboring cell of the cell to be expanded, that is, an occupation ratio of a sampling point in the cell to be expanded. Compared with the prior art that the different-frequency-band cells are matched through network working parameters or acquired data of sky resources, the method and the device for capacity expansion of the different-frequency-band neighbor cells determine the different-frequency-band neighbor cells according to the repeated coverage of the actual hot spot areas of the cells to be expanded and the different-frequency-band neighbor cells, so that the accuracy of the determined different-frequency-band neighbor cells is high, and the capacity expansion effect is improved.
Drawings
Fig. 1 is a schematic flowchart of a cell capacity expansion method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a cell coverage area provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of a hot spot area provided in an embodiment of the present invention;
fig. 4 is a schematic diagram of the number of inter-frequency band handover times of a cell in an inter-frequency band according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an overlapping coverage area of two cells according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a pilot target capacity expansion cell in a hot spot area according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly and completely understood, the technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.
At present, the same area is difficult to realize by an independent antenna feeder coverage mode, and the expansion of the network is performed by inquiring the different-frequency-band cell matched with the network working parameters or the antenna acquisition data according to the originally set network working parameters (such as the azimuth angle of the antenna and the like) or the antenna acquisition data (such as the azimuth angle, the downward inclination angle and the like of the antenna initially acquired by the terminal equipment) as a reference basis. However, the azimuth angle of the antenna may be changed, so that the accuracy of determining the matched pilot frequency cell by using the network working parameters or the data collected by the sky resources is low during cell expansion, and the expansion effect is poor.
In view of this, an embodiment of the present invention provides a cell capacity expansion method, where a target capacity expansion cell of a different-frequency band of a cell to be expanded is further selected from at least one neighboring cell of the different-frequency band according to an overlapping coverage between a hot spot area of the cell to be expanded, that is, an area with a larger traffic volume, and at least one neighboring cell of the different-frequency band of the cell to be expanded, that is, an occupation ratio of a sampling point in the cell to be expanded. Compared with the prior art that the different-frequency-band cells are matched through network working parameters or acquired data of sky resources, the method and the device for capacity expansion of the different-frequency-band neighbor cells determine the different-frequency-band neighbor cells according to the repeated coverage of the actual hot spot areas of the cells to be expanded and the different-frequency-band neighbor cells, so that the accuracy of the determined different-frequency-band neighbor cells is high, and the capacity expansion effect is improved.
In the embodiment of the invention, the MR data is the real measurement result of the user communication acquired by the network communication equipment in the process of the communication between the user terminal initiated service and the base station. The MR data covers the network coverage of the cell, the quality of service, the cell or carrier transmission function, etc. By acquiring MR data of the whole network and analyzing the MR data, the distribution condition of the current user can be found, the cell coverage condition can be evaluated, and the problems of the network, such as poor coverage in the network, disconnection of the user and the like, can be found, so that the network is optimized, and the use experience of the user is improved.
The technical scheme provided by the embodiment of the invention is described in the following with the accompanying drawings of the specification.
Referring to fig. 1, an embodiment of the present invention provides a cell capacity expansion method, which may be executed by a network device, for example, a base station, and a specific flow of the method is described as follows.
S101, determining a coverage area of a cell to be expanded and at least one covered hot spot area, wherein the traffic volume of each hot spot area is larger than a first preset threshold value.
To expand the capacity of a certain cell, it is first determined whether the cell needs to be expanded, that is, whether the number of terminal devices accessing a base station in the cell is large, whether the base station cannot carry many terminal devices for simultaneous communication, and if the base station cannot carry many terminal devices for simultaneous communication, the cell needs to be expanded.
When a certain cell to be expanded is expanded, that is, the service of the terminal device (hot spot area) which is relatively concentrated in the cell to be expanded is distributed to other cells. Firstly, the coverage area of a cell to be expanded and at least one covered hot spot area need to be determined. The hot spot area in the embodiment of the present invention refers to an area with a traffic volume greater than a first preset threshold, that is, an area with a large traffic volume.
The coverage area of the cell to be expanded and at least one hot spot area covered can be determined based on the MR data. The MR data may reflect cell coverage, the MR data falling within the cell coverage. For example, the coverage area may be a circular area with the base station in the center of the circular area. And the MR data analysis platform analyzes the MR data so as to evaluate the cell coverage condition.
When the MR data analysis platform analyzes the MR data, the MR data can be divided into M grids, where M is a positive integer. A grid may or may not include at least one piece of MR data. And after the division is finished, determining the coverage area of the cell to be expanded according to the number of the sampling points of each grid. The MR data analysis platform may divide the MR data into a plurality of grids according to the geographical region, as shown in fig. 2, where fig. 2 exemplifies the geographical region of the south xiang river of business loe. In a possible embodiment, the size of the grid may be 50m by 50m, so as to include as many sampling points as possible.
After the multiple grids are divided, at least one hot spot area of the cell to be expanded can be determined according to the multiple grids. Specifically, the embodiment of the present invention selects at least one grid from the plurality of grids, where the sampling point is greater than the second preset threshold, that is, selects at least one grid from the plurality of grids with a larger traffic. For example, the screening of at least one grid may be performed on the basis of an average number of sample points above 30% in each grid. After screening at least one grid, the embodiment of the present invention may perform clustering on the at least one grid to obtain at least one hot spot region. For example, the embodiment of the present invention performs distance matrix combination on at least one grid (for example, within 200 meters), matches longitude and latitude in each grid for geographic presentation, and finally determines at least one hot spot region through a clustering algorithm based on the selected at least one grid, as shown in fig. 3. In fig. 3, 3 hot spot regions, i.e., a region a, a region B, and a region C, are obtained as an example.
S102, determining at least one different-frequency-band adjacent cell of the cell to be expanded, wherein the frequency band corresponding to the different-frequency-band adjacent cell is different from the frequency band corresponding to the cell to be expanded.
The embodiment of the invention distributes the traffic in the hot spot area covered by the cell to be expanded to other cells so as to realize the purpose of expanding the capacity. Therefore, the embodiment of the present invention may determine at least one different-frequency-band neighboring cell of the cell to be expanded, so as to serve as a preferred different-frequency-band target expansion cell of the cell to be expanded.
The embodiment of the invention can select at least one adjacent cell of the different frequency band from a plurality of adjacent cells of the different frequency band of the cell to be expanded. Specifically, for each different-frequency-band neighboring cell of the cell to be expanded, the embodiment of the present invention may determine, based on the handover performance index data of an Operation and Maintenance Center (OMC), the number of different-frequency handover between each different-frequency-band neighboring cell and the cell to be expanded, that is, the number of times that the cell to be expanded is handed over to each different-frequency-band neighboring cell, and the sum of the number of times that each different-frequency-band neighboring cell is handed over to the cell to be expanded, so as to determine at least one different-frequency-band neighboring cell from among a plurality of different-frequency-band neighboring cells of the cell to be expanded according to the number of different-frequency handover.
In a possible implementation manner, in the embodiment of the present invention, the first N different-frequency-band neighboring cells with the largest different-frequency switching times among the multiple different-frequency-band neighboring cells may be determined as at least one different-frequency-band neighboring cell, where N is a positive integer. For example, N is 3, that is, in the embodiment of the present invention, 3 inter-frequency-band neighboring cells may be screened out as inter-frequency-band target expansion cells, as shown in fig. 4, where N is 3 in fig. 4 as an example. In fig. 4, the neighboring cell is a neighboring cell of the pilot frequency band, and the local cell is a cell to be expanded. The larger the different-frequency switching times, the stronger the relevance between a certain hot spot area and a certain different-frequency-band adjacent cell is, so that the better the effect of shunting the service of the certain hot spot area to the certain different-frequency-band adjacent cell is.
S103, determining a different-frequency-band target expansion cell of a cell to be expanded from at least one different-frequency-band adjacent cell according to the overlapping coverage of at least one hot spot area and each different-frequency-band adjacent cell; and the overlapping coverage is used for indicating the occupation ratio of the sampling point in the cell to be expanded.
After determining at least one different-frequency-band neighboring cell of the cell to be expanded, the embodiment of the present invention may further determine a final different-frequency-band target expansion cell from the at least one different-frequency-band neighboring cell.
Specifically, the embodiment of the present invention may determine an overlapping coverage area of at least one hot spot area and each different-frequency-band neighboring cell. In a possible implementation manner, for any sampling point, the embodiment of the present invention may respectively obtain a first Reference Signal Received Power (RSRP) of the sampling point in each hot spot region and a second RSRP of the sampling point in each different-frequency-band neighboring cell, and if a difference between the first RSRP and the second RSRP is within a first preset range, determine that a region where the sampling point is located is an overlapping coverage region, as shown in fig. 5, where fig. 5 illustrates an overlapping coverage region of any two cells (a cell and B cell). For example, RSRP of a cell to be expanded at a certain sampling point is-95 dBm, and all different-frequency-band neighboring cells whose RSRP of a neighboring cell is within 6dB of RSRP of the cell to be expanded are repetitive coverage areas.
The cell to be expanded and a different-frequency-band adjacent cell may or may not have a repeated coverage area, and the repeated coverage areas of the cell to be expanded and a plurality of different-frequency-band adjacent cells are larger and smaller, and if the cell to be expanded is directly distributed to the different-frequency-band adjacent cells, the service may be distributed to the different-frequency-band adjacent cells which do not have the repeated coverage area or have the smaller repeated coverage areas, so that the distribution effect is poor.
Therefore, the embodiment of the present invention may further determine the different-frequency-band target expansion cell of the cell to be expanded from the at least one different-frequency-band neighboring cell according to the overlapping coverage of the at least one hot spot area and each different-frequency-band neighboring cell. In the embodiment of the invention, the proportion of the sampling point of the overlapping coverage degree in the cell to be expanded is increased.
Specifically, in the embodiment of the present invention, the overlapping coverage of at least one hot spot region and each different-frequency-band neighboring cell may be obtained according to the ratio of the sampling point in the overlapping coverage region to the cell to be expanded, so as to select the first M different-frequency-band neighboring cells with the largest overlapping coverage from the at least one different-frequency-band neighboring cell as the different-frequency-band target expansion cell, as shown in fig. 6. Where M is a positive integer, for example M may be 3 or other possible values. In fig. 6, taking the hot cell as the a area as an example, the determined target capacity expansion cell in the different frequency band is a high-overlap co-hot-spot coverage adjacent cell in the different frequency band, and another adjacent cell in the different frequency band (i.e., the shangxiang river cell in the business lo south) is not used as the target capacity expansion cell in the different frequency band.
The cell capacity expansion cell provided by the embodiment of the invention is applied to capacity expansion of a high-load cell in Shanluodian city, and analysis of statistical data shows that the capacity expansion solution rate of the cell to be expanded is about 88.89%, which is 60.51% higher than that of the existing capacity expansion mode, and is shown in Table 1.
TABLE 1 different frequency band expansion index of high load cell in Shanluodi city
In summary, in the embodiment of the present invention, the different-frequency target expansion cell of the cell to be expanded is further selected from the at least one different-frequency neighboring cell according to the overlapping coverage between the hot spot area of the cell to be expanded, that is, the area with the larger traffic volume, and the at least one different-frequency neighboring cell of the cell to be expanded, that is, the occupation ratio of the sampling point in the cell to be expanded. Compared with the prior art that the different-frequency-band cells are matched through network working parameters or acquired data of sky resources, the method and the device for capacity expansion of the different-frequency-band neighbor cells determine the different-frequency-band neighbor cells according to the repeated coverage of the actual hot spot areas of the cells to be expanded and the different-frequency-band neighbor cells, so that the accuracy of the determined different-frequency-band neighbor cells is high, and the capacity expansion effect is improved.
The following describes the equipment provided by the embodiment of the invention with the attached drawings of the specification
Referring to fig. 7, based on the same inventive concept, an embodiment of the present invention provides a network device, which includes a first determining unit 701, a second determining unit 702, and a third determining unit 703, wherein: the first determining unit 701 is configured to determine a coverage area of a cell to be expanded and at least one hot spot area covered by the cell, where a traffic volume of each hot spot area is greater than a first preset threshold; the second determining unit 702 is configured to determine at least one different-frequency-band neighboring cell of the cell to be expanded; the frequency band corresponding to the different-frequency-band adjacent cell is different from the frequency band corresponding to the cell to be expanded; the third determining unit 703 is configured to determine, according to the overlapping coverage of the at least one hot spot area and each different-frequency-band neighboring cell, a different-frequency-band target expansion cell of the cell to be expanded from the at least one different-frequency-band neighboring cell; and the overlapping coverage is used for indicating the occupation ratio of sampling points in the cell to be expanded.
Optionally, the first determining unit 701 is specifically configured to:
determining the coverage range of the cell to be expanded based on sampling points in a plurality of grids divided by measurement report MR data;
selecting at least one grid with sampling points larger than a second preset threshold from the plurality of grids;
and clustering the at least one grid to obtain the at least one hot spot region.
Optionally, the second determining unit 702 is specifically configured to:
aiming at each different-frequency-band adjacent cell of the cell to be expanded, determining the different-frequency switching times between each different-frequency-band adjacent cell and the cell to be expanded;
and determining the at least one different frequency band adjacent cell from a plurality of different frequency band adjacent cells of the cell to be subjected to capacity expansion according to the different frequency switching times.
Optionally, the second determining unit 702 is specifically configured to:
and determining the first N different-frequency-band adjacent cells with the maximum different-frequency switching times in the plurality of different-frequency-band adjacent cells as the at least one different-frequency-band adjacent cell, wherein N is a positive integer.
Optionally, the third determining unit 703 is further configured to:
determining an overlapping coverage area of the at least one hot spot area and each different-frequency-band neighboring cell;
and acquiring the overlapping coverage degree of the at least one hot spot area and each different-frequency-band adjacent cell according to the occupation ratio of the sampling points in the overlapping coverage area in the cell to be expanded.
Optionally, the third determining unit 703 is specifically configured to:
aiming at any sampling point, respectively acquiring a first Reference Signal Received Power (RSRP) of the sampling point in each hot spot area and a second RSRP of the sampling point in each different-frequency-band adjacent cell;
and if the difference value between the first RSRP and the second RSRP is within a first preset range, determining that the area of any sampling point is the overlapping coverage area.
Optionally, the third determining unit 703 is specifically configured to:
and determining the first M different-frequency-band adjacent cells with the largest overlapping coverage in the at least one different-frequency-band adjacent cell as the different-frequency-band target expansion cell, wherein M is a positive integer.
Referring to fig. 8, based on the same inventive concept, an embodiment of the present invention provides a network device, which may include: at least one processor 801, the processor 801 configured to implement the steps provided by the embodiments of the invention as shown in fig. 1 when executing a computer program stored in a memory.
Alternatively, the processor 801 may be a central processing unit, an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits for controlling program execution.
Optionally, the network device further includes a Memory 802 connected to the at least one processor, where the Memory 802 may include a Read Only Memory (ROM), a Random Access Memory (RAM), and a disk Memory. The memory 802 is used for storing data required by the processor 801 during operation, that is, storing instructions executable by the at least one processor 801, and the at least one processor 801 executes the method shown in fig. 1 by executing the instructions stored in the memory 802. The number of the memory 802 is one or more. The memory 802 is also shown in fig. 8, but it should be noted that the memory 802 is not an optional functional block, and is therefore shown in fig. 8 by a dotted line.
The physical devices corresponding to the first determining unit 701, the second determining unit 702, and the third determining unit 703 may be the processor 801 described above. The network device may be configured to perform the method provided by the embodiment shown in fig. 1. Therefore, regarding the functions that can be realized by each functional module in the device, reference may be made to the corresponding description in the embodiment shown in fig. 1, which is not repeated herein.
Embodiments of the present invention also provide a computer storage medium, where the computer storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer is caused to execute the method as described in fig. 1.
In embodiments of the invention, the terminal device comprises a device providing voice and/or data connectivity to a user, and may comprise, for example, a handheld device having wireless connection capability or a processing device connected to a wireless modem. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchanging voice and/or data with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an Access Point (AP), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), a user equipment (user device), or the like. For example, mobile phones (or so-called "cellular" phones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-included or vehicle-mounted mobile devices, smart wearable devices, and the like may be included. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, Radio Frequency Identification (RFID), sensors, Global Positioning Systems (GPS), laser scanners, and the like.
By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets, smart helmets, smart jewelry and the like for monitoring physical signs.
Network devices include, for example, Access Network (AN) devices and core network devices. An access network device, such as a base station (e.g., access point), may refer to a device in an access network that communicates over the air-interface, through one or more cells, with wireless terminal devices. The network device may be configured to interconvert received air frames and Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved Node B (NodeB or eNB or e-NodeB) in a Long Term Evolution (LTE) system or an evolved LTE system (LTE-Advanced, LTE-a), or may also include a next generation Node B (gNB) in a New Radio (NR) system of a fifth generation mobile communication technology (5G), or may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a cloud access network (cloud ran) system, which is not limited in the embodiments of the present application.
It will be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a Universal Serial Bus flash disk (usb flash disk), a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, and an optical disk.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method for cell capacity expansion, comprising:
determining a coverage area of a cell to be expanded and at least one covered hot spot area, wherein the traffic volume of each hot spot area is greater than a first preset threshold;
determining at least one different-frequency-band adjacent cell of the cell to be expanded; the frequency band corresponding to the different-frequency-band adjacent cell is different from the frequency band corresponding to the cell to be expanded;
determining a different-frequency-band target expansion cell of the cell to be expanded from the at least one different-frequency-band adjacent cell according to the overlapping coverage of the at least one hot spot area and each different-frequency-band adjacent cell; and the overlapping coverage is used for indicating the occupation ratio of sampling points in the cell to be expanded.
2. The cell capacity expansion method of claim 1, wherein determining the coverage area of the cell to be expanded and at least one hot spot area covered comprises:
determining the coverage range of the cell to be expanded based on sampling points in a plurality of grids divided by measurement report MR data;
selecting at least one grid with sampling points larger than a second preset threshold from the plurality of grids;
and clustering the at least one grid to obtain the at least one hot spot region.
3. The cell capacity expansion method of claim 1, wherein determining at least one different frequency band neighbor cell of the cell to be expanded comprises:
aiming at each different-frequency-band adjacent cell of the cell to be expanded, determining the different-frequency switching times between each different-frequency-band adjacent cell and the cell to be expanded;
and determining the at least one different frequency band adjacent cell from a plurality of different frequency band adjacent cells of the cell to be subjected to capacity expansion according to the different frequency switching times.
4. The cell capacity expansion method of claim 3, wherein determining the at least one different frequency band neighbor cell from a plurality of different frequency band neighbor cells of the cell to be capacity expanded according to the different frequency handover times comprises:
and determining the first N different-frequency-band adjacent cells with the maximum different-frequency switching times in the plurality of different-frequency-band adjacent cells as the at least one different-frequency-band adjacent cell, wherein N is a positive integer.
5. The cell capacity expansion method according to any one of claims 1 to 4, wherein before determining the target capacity expansion cell of the different frequency band from the at least one neighboring cell of the different frequency band according to the overlapping coverage of the at least one hot spot area and each neighboring cell of the different frequency band, the method further comprises:
determining an overlapping coverage area of the at least one hot spot area and each different-frequency-band neighboring cell;
and acquiring the overlapping coverage degree of the at least one hot spot area and each different-frequency-band adjacent cell according to the occupation ratio of the sampling points in the overlapping coverage area in the cell to be expanded.
6. The cell capacity expansion method of claim 5, wherein determining the overlapping coverage area of the at least one hotspot area and each alien neighbor cell comprises:
aiming at any sampling point, respectively acquiring a first Reference Signal Received Power (RSRP) of the sampling point in each hot spot area and a second RSRP of the sampling point in each different-frequency-band adjacent cell;
and if the difference value between the first RSRP and the second RSRP is within a first preset range, determining that the area of any sampling point is the overlapping coverage area.
7. The cell capacity expansion method of claim 6, wherein determining a different-frequency-band target capacity expansion cell of the cell to be subjected to capacity expansion from the at least one different-frequency-band neighboring cell according to the overlapping coverage of the at least one hot spot area and each different-frequency-band neighboring cell comprises:
and determining the first M different-frequency-band adjacent cells with the largest overlapping coverage in the at least one different-frequency-band adjacent cell as the different-frequency-band target expansion cell, wherein M is a positive integer.
8. A network device, comprising:
the first determining unit is used for determining the coverage area of the cell to be expanded and at least one covered hot spot area, and the traffic volume of each hot spot area is greater than a first preset threshold value;
a second determining unit, configured to determine at least one different-frequency-band neighboring cell of the cell to be expanded; the frequency band corresponding to the different-frequency-band adjacent cell is different from the frequency band corresponding to the cell to be expanded;
a third determining unit, configured to determine, according to overlapping coverage of the at least one hot spot area and each different-frequency-band neighboring cell, a different-frequency-band target expansion cell of the cell to be expanded from the at least one different-frequency-band neighboring cell; and the overlapping coverage is used for indicating the occupation ratio of sampling points in the cell to be expanded.
9. A network device, comprising:
at least one processor, and
a memory coupled to the at least one processor;
wherein the memory stores instructions executable by the at least one processor, the at least one processor implementing the method of any one of claims 1-7 by executing the instructions stored by the memory.
10. A computer storage medium on which a computer program is stored, which computer program, when being executed by a processor, carries out the method according to any one of claims 1-7.
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