CN107241743B - Power grid private network layout construction method - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
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Abstract
The invention relates to a power grid private network layout construction method, which solves the defects of the prior art and adopts the technical scheme that: acquiring a regional map of a target site, a base station alternative point and terminal information; step two, carrying out gridding processing on the regional map; step three, acquiring all standard base station combinations; step four, calculating the flow density of all grids in the regional map; step five, sequencing transmission degrees of all the standard-reaching base station combinations; and step six, selecting the base station combination with the highest rank to construct the base station. The terminal equipment which generates more data as much as possible is configured at the accessory of the base station, so that the distance between the base station and the terminal equipment is reduced, rain attenuation or other path loss is reduced, meanwhile, a proper base station is selected for the equipment terminal, excessive high buildings or similar high buildings are avoided as much as possible between the base station and the terminal, the obstruction of the high buildings or similar high buildings to radiation waves is prevented, and the effect of improving the reliability of data transmission is achieved.
Description
Technical Field
The patent relates to a power grid construction method, in particular to a power grid private network layout construction method.
Background
The TD-LTE230 wireless private network has the characteristics of wide coverage, high transmission rate, strong real-time and spectrum adaptability and the like, and is a main technical means of a terminal communication access network. With the advent of the smart grid era, the construction of a wireless private network of electric power is imperative, and in the wireless communication technology, China has intellectual property rights of a TD-LTE technical system, can meet the business development requirements of electric power at present and in a certain period in the future, can evolve to 5G in the future, and has great development potential.
In the initial stage of network construction of mobile communication, the number of users is small, the number of sites is small, the coverage radius of a base station is large, investment control and later maintenance are less considered, then the base station construction mainly solves the problem of network coverage, the freedom degree of selection of the base station site is large, the base station site is indicated to be selected by experience and intuition without scientific demonstration and analysis, and as long as an antenna is hung at a high enough height and signals are propagated far enough, the problems of poor safety and stability of base station operation, large difficulty in construction and maintenance and the like are easily caused. Therefore, for the construction planning of the TD-LTE230 wireless private network base station, previous experience training should be taken into consideration, difficulty of base station construction, maintenance after the base station is opened and the like are comprehensively considered, reasonable planning is carried out on the premise of ensuring network coverage and flow requirements, existing infrastructure of a construction party is fully considered, the position and the number of the base station construction are determined, and for the power industry, the position of a transformer substation, a business hall and a rentable base station is fully considered.
Chinese patent publication No. CN104378769, published 2015, 2/25, entitled coverage prediction-based automatic point selection method for planned points of TD-SCDMA base station, and the application discloses that the core steps of the automatic point selection method for planned points of base stations include: acquiring cell information of a macro base station to obtain a set A; calculating the maximum value and the minimum value of the longitude and latitude of the cells in the set A and rounding according to the step length; dividing the longitude and latitude from the minimum value to the maximum value according to step length; pairing according to longitude and latitude to obtain a set B; initializing the attribute of the set B; and collecting grid ground object information and the like of the set B. The mobile network has the disadvantages that most of terminals corresponding to the mobile network are mobile terminals, and the terminals required in the construction of a general power grid are fixed terminals, and the fixed terminals can be close to a base station as much as possible, and the obstruction of high obstructions in a transmission path can be considered, so that a better communication effect can be achieved by reasonably planning and selecting addresses when a special network is constructed for the power grid. Meanwhile, the requirements on the safety and reliability of the power grid equipment are higher than those of a mobile network, so that the development of a layout construction method for a special power grid is imperative.
Disclosure of Invention
The invention aims to solve the problem that the requirements on safety and reliability of the power grid equipment in the prior art are higher than those of a mobile network, so that a layout construction method for a power private network is needed, and provides a power grid private network layout construction method.
The technical scheme adopted by the invention for solving the technical problems is as follows: a power grid private network layout construction method comprises the following steps:
acquiring a regional map of a target site, a base station alternative point and terminal information;
step two, carrying out gridding processing on the regional map;
step three, acquiring all standard base station combinations;
step four, calculating the flow density of all grids in the regional map;
step five, sequencing transmission degrees of all the standard-reaching base station combinations;
and step six, selecting the base station combination with the highest rank to construct the base station.
The invention selects all standard base station combinations as alternative base station combinations, and configures terminal equipment with more data generated as much as possible near the base station by introducing concepts of flow density and transmission degree, so that the distance between the base station and the terminal equipment is reduced, rain attenuation or other path loss is reduced, and meanwhile, a proper base station is selected for the equipment terminal, thereby avoiding too many high buildings or similar high buildings between the base station and the terminal as much as possible, preventing the obstruction of the high buildings or similar high buildings to radiation waves, and achieving the effect of improving the reliability of data transmission.
Preferably, in the first step, the regional map of the target location is an electronic map, the base station candidate points include self-owned building points and building high points of the power grid, and the terminal information includes a distribution automation terminal position, an electricity consumption information acquisition terminal position, a load control terminal position and an electric power service equipment terminal position. The invention includes these types of terminal devices, but is not limited to this, and may also include street lamp terminals, charging pile terminals or other arbitrary automation terminals and metering terminals of power-related devices. In the invention, the sources of the terminal data are all provided by an electric power system according to the daily running state of various terminals, the terminal equipment in the invention is generally fixed terminals, the number of the mobile terminals in the invention is small, the mobile terminals generally comprise mobile overhaul equipment, and the data consumption is not large, so the data consumption is not considered in the invention.
Preferably, in the second step, the area map is divided into meshes in equal amount, and parameters of each mesh are manually set. In the invention, the gridding division method can be divided in a rectangular division mode, can also be divided in a regular hexagonal division mode, and can also be divided in a regular triangular division mode, and the division methods are more and can be set manually.
Preferably, in the third step, all base station alternative points are subjected to equal-area radiation, the combination of the equal-area radiation of all the base station alternative points is traversed, the area ratio of the coverage surface of all the base station alternative point combinations to the target location is obtained, and the base station alternative point combination with each area ratio larger than the set value is the standard base station combination. The invention adopts the equal-area radiation method for configuration, and the invention mainly provides prophase planning, so when the radiation area is divided, the equal-area radiation method is firstly adopted, the radiation area division of unequal areas can be selected under the condition of detailed data, and in the invention, the combination of traversing all base station alternative points and equal-area radiation is represented as follows: and drawing radiation areas of all base station alternative points, storing the radiation areas, overlapping, and removing the repeated radiation areas after overlapping to obtain base stations larger than the set value of the areas. For example A, B, C, D, E exists within the same region, at which point, for A, B, C, D, E, after radiation is established, it is seen whether the radiation coverage area of a is greater than 90% of the area of the target region, whether the radiation coverage area of a plus B is greater than 90% of the area of the target region, and if not, whether the radiation coverage area of a plus B plus C is greater than 90% of the area of the target region; after the condition is met, continuing the step from B until the combined coverage area of all the base stations can be larger than 90% of the area of the target area; and then taking out the base station combinations with the repeated coverage rate larger than a set value, wherein the rest base station combinations are standard base station combinations. This step is typically done by a computer.
Preferably, in the fourth step, the flow density ToA in each grid region is calculated by the formula ToA ═ K × (T1 × N1+ T2 × N2+. + Tn × Nn)/S; the flow density is a quantitative parameter for representing the distribution density degree of power communication demands, and is an average information communication demand value per square km, which is measured by Kbps/km2 and represents the sum of communication data transmission capacities required by power terminals in a unit square, K is a service concurrency coefficient in a grid area and is set manually, Tn is the information communication demand value of each terminal type, Nn is the number of terminals corresponding to the Tn type in the grid area, and S is the area of the grid area.
Preferably, in the step five, the corresponding relationship between all base stations and grids in each standard base station combination is obtained through calculation, and the transmission degrees of all grids in each standard base station combination are calculated, wherein the transmission degree of each grid is calculated according to the following formula: q ═ ToA/L; and L is a distance value between the center of the grid and the base station with the corresponding relation, the sum of the transmission degrees of all grids in each standard-reaching base station combination is calculated, and the transmission degrees of all the standard-reaching base station combinations are sequenced from high to low. The arrangement is that a large amount of data are strived to be close to the periphery of the base station as far as possible, so that the distance between the base station and the terminal equipment for sending a large amount of data is reduced, rain attenuation or other distance loss is reduced, meanwhile, a proper base station is selected for the equipment terminal, excessive high buildings or similar high buildings are avoided as far as possible between the base station and the terminal, the obstruction of the high buildings or the similar high buildings to radiation waves is prevented, and the effect of improving the reliability of data transmission is achieved.
Preferably, in the third step, the building points of the power grid among the alternative points of the base station perform area radiation according to the height of the building points of the power grid, and the area Sf of the area radiation is P × (h-ht) × Lt; h is the height of a self-owned building point of the power grid, ht is an artificially set initial height value, and Lt is an artificially set radiation range coefficient; carrying out equal-area radiation on the building high points, traversing the combination of all base station alternative points to obtain the area ratio of the coverage surface of all the base station alternative point combinations to the target site, wherein each base station alternative point combination with the area ratio larger than the set value is the first standard-reaching base station combination; removing base station combinations with the number of building high points exceeding a set value from the first standard-reaching base station combinations; the rest base station combinations are standard base station combinations. In the case of detailed data, the radiation area division of the unequal area can be selected, where P is the power correlation coefficient at the time of radiation calculation. The method is more accurate and detailed than the similar method, and simultaneously takes the interference factors of the building high points into consideration, so that the method is more suitable.
Preferably, after the fifth step is finished, selecting a standard base station combination with transmission degrees which are arranged at the first plurality of bits and the transmission degrees of which are greater than a set standard as a key resource base station combination to sequence key resource transmission degrees;
the first step of ordering transmission degree of key resources is as follows: calculating the traffic density ToA of the key resources in each grid; ToAz ═ Kz × (T1 × N1+ T2 × N2+. + Tm × Nm)/S; ToAz is the flow density of key resources in each grid, and Kz is the concurrency coefficient of key resource services in the grid area and is set manually; tm is the information communication demand value of each key resource terminal, Nm is the number of key resource terminals corresponding to Tm type in the grid area, and m is less than or equal to n;
a second step of ordering the transmission degree of the key resources: calculating the transmission degrees of all grids in each key resource base station combination, wherein the key resource transmission degree of each grid is calculated by the following formula: qz ═ ToAz/L; and L is the distance between the center of the grid and the base station, the sum of the transmission degrees of all grids in each key resource base station combination is calculated, and the transmission degrees of all key resource base station combinations are sequenced from high to low.
In this way, the important resources can be considered better, and the importance of the important resources in the circuit system is much higher than that of the general resources, so that under appropriate conditions, arranging the important resources closer to the base station is the best choice, which is greatly different from that of the general mobile network.
Preferably, in the first step of ordering the transmission degree of the key resource, the key resource terminal includes a distribution automation terminal.
Preferably, when the corresponding relation between all base stations in each standard base station combination and the grids covered by the receiving base station is obtained through calculation, all the grids covered by at least two base stations are obtained as the grids to be detected, the distance between the central point of the grids to be detected and the base station is calculated, and the base station closest to the central point of the grids to be detected is selected as the corresponding relation base station of the grids to be detected.
The substantial effects of the invention are as follows: the invention selects all standard base station combinations as alternative base station combinations, and configures terminal equipment with more data generated as much as possible near the base station by introducing concepts of flow density and transmission degree, so that the distance between the base station and the terminal equipment is reduced, rain attenuation or other path loss is reduced, and meanwhile, a proper base station is selected for the equipment terminal, thereby avoiding too many high buildings or similar high buildings between the base station and the terminal as much as possible, preventing the obstruction of the high buildings or similar high buildings to radiation waves, and achieving the effect of improving the reliability of data transmission.
Detailed Description
The technical solution of the present invention will be further specifically described below by way of specific examples.
Example 1:
a power grid private network layout construction method comprises the following steps:
acquiring a regional map of a target site, a base station alternative point and terminal information; in the first step, the regional map of the target location is an electronic map, the base station candidate points include self-owned building points and building high points of a power grid, and the terminal information includes a distribution automation terminal position, a power utilization information acquisition terminal position, a load control terminal position and a power service equipment terminal position. The invention includes these types of terminal devices, but is not limited to this, and may also include street lamp terminals, charging pile terminals or other arbitrary automation terminals and metering terminals of power-related devices. In the invention, the sources of the terminal data are all provided by an electric power system according to the daily running state of various terminals, the terminal equipment in the invention is generally fixed terminals, the number of the mobile terminals in the invention is small, the mobile terminals generally comprise mobile overhaul equipment, and the data consumption is not large, so the data consumption is not considered in the invention.
Step two, carrying out gridding processing on the regional map; and in the second step, the area map is subjected to equivalent gridding division, and the parameters of each grid are manually set. The division into equal blocks is performed in this embodiment.
Step three, acquiring all standard base station combinations; in the third step, all the base station alternative points are subjected to equal-area radiation, the combination of the equal-area radiation of all the base station alternative points is traversed, the area ratio of the coverage surface of all the base station alternative point combinations to the target location is obtained, and each base station alternative point combination with the area ratio larger than the set value is the standard base station combination. Traversing all the combined representations of the area radiation such as the base station alternate points: and drawing radiation areas of all base station alternative points, storing the radiation areas, overlapping, and removing the repeated radiation areas after overlapping to obtain base stations larger than the set value of the areas. For example A, B, C, D, E exists within the same region, at which point, for A, B, C, D, E, after radiation is established, it is seen whether the radiation coverage area of a is greater than 90% of the area of the target region, whether the radiation coverage area of a plus B is greater than 90% of the area of the target region, and if not, whether the radiation coverage area of a plus B plus C is greater than 90% of the area of the target region; after the condition is met, continuing the step from B until the combined coverage area of all the base stations can be larger than 90% of the area of the target area; and then taking out the base station combinations with the repeated coverage rate larger than a set value, wherein the rest base station combinations are standard base station combinations. This step is typically done by a computer.
Step four, calculating the flow density of all grids in the regional map; in the fourth step, calculating the flow density ToA in each grid region by the formula ToA ═ K × (T1 × N1+ T2 × N2+ ·+ Tn × Nn)/S; the flow density is a quantitative parameter for representing the distribution density degree of power communication demands, and is an average information communication demand value per square km, which is measured by Kbps/km2 and represents the sum of communication data transmission capacities required by power terminals in a unit square, K is a service concurrency coefficient in a grid area and is set manually, Tn is the information communication demand value of each terminal type, Nn is the number of terminals corresponding to the Tn type in the grid area, and S is the area of the grid area. K is a service concurrency coefficient in a grid area, is mainly provided by a power grid service department, and is generally recorded and sorted when being set, and in the embodiment, the value of K can also consider the redundancy requirement, but generally speaking, the redundancy value in a power private network of a fixed terminal is very small, the specific influence value is very small, and the redundancy value can not be considered in many times. And when the corresponding relation between all base stations in each standard base station combination and the grids covered by the receiving base station is obtained through calculation, all the grids covered by at least two base stations are obtained as the grids to be detected, the distance between the central point of the grids to be detected and the base station is calculated, and the base station closest to the central point of the grids to be detected is selected as the corresponding relation base station of the grids to be detected.
Step five, sequencing transmission degrees of all the standard-reaching base station combinations; in the fifth step, the corresponding relation between all base stations and grids in each standard base station combination is obtained through calculation, the transmission degrees of all grids in each standard base station combination are calculated, and the transmission degree of each grid is calculated according to the following formula: q ═ ToA/L; and L is a distance value between the center of the grid and the base station with the corresponding relation, the sum of the transmission degrees of all grids in each standard-reaching base station combination is calculated, and the transmission degrees of all the standard-reaching base station combinations are sequenced from high to low. The arrangement is that a large amount of data are strived to be close to the periphery of the base station as far as possible, so that the distance between the base station and the terminal equipment for sending a large amount of data is reduced, rain attenuation or other distance loss is reduced, meanwhile, a proper base station is selected for the equipment terminal, excessive high buildings or similar high buildings are avoided as far as possible between the base station and the terminal, the obstruction of the high buildings or the similar high buildings to radiation waves is prevented, and the effect of improving the reliability of data transmission is achieved.
And step six, selecting the base station combination with the highest rank to construct the base station.
Example 2:
the present embodiment is basically the same as embodiment 1, except that, in step three, area radiation is performed on a building point of a power grid among all base station candidate points according to the height of the building point of the power grid, and an area Sf of the area radiation is P × (h-ht) × Lt; h is the height of a self-owned building point of the power grid, ht is an artificially set initial height value, and Lt is an artificially set radiation range coefficient; carrying out equal-area radiation on the building high points, traversing the combination of all base station alternative points to obtain the area ratio of the coverage surface of all the base station alternative point combinations to the target site, wherein each base station alternative point combination with the area ratio larger than the set value is the first standard-reaching base station combination; removing base station combinations with the number of building high points exceeding a set value from the first standard-reaching base station combinations; the rest base station combinations are standard base station combinations. Where P is the power correlation coefficient at the time of radiation calculation. The method is more accurate and detailed than the similar method, and simultaneously takes the interference factors of the building high points into consideration, so that the method is more suitable.
Example 3:
the present embodiment is basically the same as embodiment 1, except that after the fifth step, a standard base station combination with transmission degrees ranked in the first several digits and the transmission degree greater than a set standard is selected as a key resource base station combination for key resource transmission degree ranking;
the first step of ordering transmission degree of key resources is as follows: calculating the traffic density ToA of the key resources in each grid; ToAz ═ Kz × (T1 × N1+ T2 × N2+. + Tm × Nm)/S; ToAz is the flow density of key resources in each grid, and Kz is the concurrency coefficient of key resource services in the grid area and is set manually; tm is the information communication demand value of each key resource terminal, Nm is the number of key resource terminals corresponding to Tm type in the grid area, and m is less than or equal to n;
a second step of ordering the transmission degree of the key resources: calculating the transmission degrees of all grids in each key resource base station combination, wherein the key resource transmission degree of each grid is calculated by the following formula: qz ═ ToAz/L; and L is the distance between the center of the grid and the base station, the sum of the transmission degrees of all grids in each key resource base station combination is calculated, and the transmission degrees of all key resource base station combinations are sequenced from high to low. In the first step of ordering the transmission degree of the key resources, the key resource terminal comprises a distribution automation terminal. In this way, the important resources can be considered better, and the importance of the important resources in the circuit system is much higher than that of the general resources, so that under appropriate conditions, arranging the important resources closer to the base station is the best choice, which is greatly different from that of the general mobile network.
Example 4:
this embodiment is basically the same as embodiment 2, except that, because the number of types of devices in each area is different, the concurrency coefficient of the terminal device in each grid can be set to be different. See in particular:
TABLE 1 statistical and distribution density table for the number of distribution communication terminals in a certain city
Table 2A base station distribution flow density (concurrency index is set to 0.8)
Table 3B base station distribution flow density (concurrency index is set to 0.6)
Table 4C base station distribution flow density (concurrency index is set to 0.5)
Table 5D base station distribution flow density (concurrency index is set to 0.1)
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (10)
1. A power grid private network layout construction method is characterized by comprising the following steps:
acquiring a regional map of a target site, a base station alternative point and terminal information;
step two, carrying out gridding processing on the regional map;
step three, acquiring all standard base station combinations;
step four, calculating the flow density of all grids in the regional map;
in the fourth step, calculating the flow density ToA in each grid region by the formula ToA ═ K × (T1 × N1+ T2 × N2+ ·+ Tn × Nn)/S; the flow density is a quantitative parameter for representing the distribution density degree of power communication demands, and is an average information communication demand value per square km, which is measured by Kbps/km2 and represents the sum of communication data transmission capacities required by power terminals in a unit square, K is a service concurrency coefficient in a grid area and is set manually, Tn is the information communication demand value of each terminal type, Nn is the number of terminals corresponding to the Tn type in the grid area, and S is the area of the grid area;
step five, sequencing transmission degrees of all the standard-reaching base station combinations;
step six, selecting the base station combination with the highest rank to build the base station;
the standard base station is defined as that all base station alternative points are subjected to equal-area radiation, all combinations of the base station alternative points and equal-area radiation are traversed to obtain the area ratio of the coverage area of all the base station alternative point combinations to a target site, and each base station alternative point combination with the area ratio larger than a set value is the standard base station combination;
the transmission is defined as Q ═ ToA/L; l is a distance value between the center of the mesh and the base station having the correspondence, and ToA is a traffic density in each mesh area.
2. The power grid private network layout construction method according to claim 1, wherein in the first step, the regional map of the target location is an electronic map, the base station candidate points include self-owned building points and building high points of the power grid, and the terminal information includes a distribution automation terminal position, a power consumption information acquisition terminal position, a load control terminal position and a power service equipment terminal position.
3. The power grid private network layout construction method according to claim 1, wherein in the second step, the area map is divided into equal grids, and parameters of each grid are manually set.
4. The power grid private network layout construction method according to claim 3, characterized in that in step three, all base station alternative points are subjected to equal-area radiation, combinations of equal-area radiation of all base station alternative points are traversed, area ratios of coverage surfaces of all base station alternative point combinations and target locations are obtained, and each base station alternative point combination with the area ratio larger than a set value is a standard base station combination.
5. The grid private network layout construction method according to claim 4, wherein in the fourth step, the traffic density ToA in each grid area is calculated by the formula ToA ═ K x (T1 xN 1+ T2 xN 2+. + TnxNn)/S; the flow density is a quantitative parameter for representing the distribution density degree of power communication demands, and is an average information communication demand value per square km, which is measured by Kbps/km2 and represents the sum of communication data transmission capacities required by power terminals in a unit square, K is a service concurrency coefficient in a grid area and is set manually, Tn is the information communication demand value of each terminal type, Nn is the number of terminals corresponding to the Tn type in the grid area, and S is the area of the grid area.
6. The power grid private network layout construction method according to claim 4, wherein in the fifth step, the corresponding relationship between all base stations and grids in each standard base station combination is obtained through calculation, and the transmission degree of all grids in each standard base station combination is calculated, and the transmission degree of each grid is calculated according to the following formula: q ═ ToA/L; and L is a distance value between the center of the grid and the base station with the corresponding relation, the sum of the transmission degrees of all grids in each standard-reaching base station combination is calculated, and the transmission degrees of all the standard-reaching base station combinations are sequenced from high to low.
7. The private grid network layout construction method according to claim 3, wherein in step three, the building points of the power grid among all the base station alternative points are subjected to regional radiation according to the height of the building points of the power grid, and the area Sf of the regional radiation is P x (h-ht) x Lt; h is the height of a self-owned building point of the power grid, ht is an artificially set initial height value, and Lt is an artificially set radiation range coefficient; carrying out equal-area radiation on the building high points, traversing the combination of all base station alternative points to obtain the area ratio of the coverage surface of all the base station alternative point combinations to the target site, wherein each base station alternative point combination with the area ratio larger than the set value is the first standard-reaching base station combination; removing base station combinations with the number of building high points exceeding a set value from the first standard-reaching base station combinations; the rest base station combinations are standard base station combinations.
8. The power grid private network layout construction method according to claim 3, wherein after the fifth step is finished, a standard base station combination with transmission degrees arranged in a plurality of front bits and the transmission degree being greater than a set standard is selected as a key resource base station combination for key resource transmission degree sequencing; the first step of ordering transmission degree of key resources is as follows: calculating the traffic density ToA of the key resources in each grid; ToAz ═ Kz × (T1 × N1+ T2 × N2+. + Tm × Nm)/S; ToAz is the flow density of key resources in each grid, and Kz is the concurrency coefficient of key resource services in the grid area and is set manually; tm is the information communication demand value of each key resource terminal, Nm is the number of key resource terminals corresponding to Tm type in the grid area, and m is less than or equal to n;
a second step of ordering the transmission degree of the key resources: calculating the transmission degrees of all grids in each key resource base station combination, wherein the key resource transmission degree of each grid is calculated by the following formula: qz ═ ToAz/L; and L is the distance between the center of the grid and the base station, the sum of the transmission degrees of all grids in each key resource base station combination is calculated, and the transmission degrees of all key resource base station combinations are sequenced from high to low.
9. The power grid private network layout construction method according to claim 8, wherein in the first key resource transmission degree sorting substep, the key resource terminal comprises a distribution automation terminal.
10. The power grid private network layout construction method according to claim 8, wherein when the corresponding relationship between all base stations in each standard base station combination and the grid covered by the receiving base station is obtained through calculation, all the grids covered by at least two base stations are obtained as the grid to be measured, the distance between the center point of the grid to be measured and the base station is calculated, and the base station closest to the center point of the grid to be measured is selected as the corresponding relationship base station of the grid to be measured.
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| CN109474942B (en) * | 2018-12-17 | 2022-01-25 | 中国联合网络通信集团有限公司 | Wireless network optimization method and device |
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