CN113316161B - Method for judging discontinuous cell coverage of digital indoor division design scheme - Google Patents
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Abstract
The invention provides a method for judging discontinuous cell coverage of a digital indoor distribution design scheme, which comprises the following steps: selecting a design plan of a cell coverage area to be identified, and automatically generating a plan building outline polygon; (1) Carrying out point sampling on the input two-dimensional CAD plan building vector diagram according to a certain proportion coefficient S to generate a point set; (2) And solving the boundary of the two-dimensional plane point set to obtain a polygon, wherein the polygon is the outline of the building. According to the invention, through the cooperation of the flow steps, the cell coverage polygon can be automatically generated by the computer, and revision reminding is provided for the unconnected cell coverage, so that the production efficiency and the accuracy of the design scheme are improved, unreasonable places in the scheme are avoided, manual error or manual false drawing of polygon marking cell coverage areas is avoided, and meanwhile, the auditing efficiency and the trust degree of the receiving unit of each cooperation link in the design field on the design scheme are greatly improved.
Description
Technical Field
The invention relates to the field of wireless communication indoor distributed coverage, in particular to a method for judging discontinuous cell coverage of a digital indoor distribution design scheme.
Background
Currently, the network topology connection of the indoor distributed coverage system digitization solution can be categorized into 5 types:
class 1: a baseband processing unit (BBU for short), a data aggregation unit (or called as an extension unit), and a built-in antenna type radio remote unit;
class 2: the method comprises the following steps that a baseband processing unit (BBU for short), a data aggregation unit (or called an extension unit), a multi-stage series data aggregation unit (or called an extension unit) and a built-in antenna type radio remote unit are connected in series;
class 3: the method comprises the following steps that a baseband processing unit (BBU for short), a data aggregation unit (or called as an extension unit), an external antenna type radio remote unit and an antenna are arranged;
class 4: the method comprises the following steps that a baseband processing unit (BBU for short), a data aggregation unit (or called extension unit), a multi-stage series data aggregation unit (or called extension unit), an external antenna type radio remote unit and an antenna are connected in series;
class 5: that is, the category includes combinations of 2 or 3 or all cases in categories 1, 2, 3, and 4, for example, a case where the data aggregation unit exists in series and is not in series at the same time, a case where the data aggregation unit connects the external antenna type remote radio unit and the internal antenna type remote radio unit at the same time, and the like.
The baseband processing unit and the data aggregation unit are in a 1-to-many connection relationship; the data aggregation unit and the radio remote unit are also in a 1-to-many connection relationship; the radio remote unit of external antenna type and antenna are the same as 1 to many connection relation; the data gathering unit is connected with the remote radio unit and can be connected with the data gathering unit in series, and the data gathering unit connected in series is also connected with other remote radio units.
Therefore, the connection relationship of the scheme may constitute a tree diagram with the root node being the baseband processing unit or the root node being the data aggregation unit, which may be referred to as a "device connection system diagram" (or a device connection topology diagram).
When designing a digital solution of a wireless communication indoor distributed coverage system, a scheme designer needs to manually draw polygons on a plan view to mark coverage areas of cells in the design scheme, so that the design scheme is reasonable, and the abnormal situation that the coverage area of a certain cell is divided into a plurality of discontinuous areas by other cells to cause cell ping-pong handover or cell interference is avoided.
At present, when designing an indoor distributed coverage digitization scheme, designers have 2 operation methods to manually describe cell coverage area polygons.
Method 1: after the specific design scheme is output, the designer traces the coverage area of the polygonal area identification cell according to the connection topological relation of each cell equipment device; the operation mode and the operation method essentially describe the polygon of the cell coverage area on the plan view through the specific position of the antenna equipment set connected with the cell tail end by the artificial subjective judgment, and have the advantages of long time consumption, easy error and difficult examination and correction.
The 2 nd method: before the design of a specific scheme, a designer directly manually traces the coverage area of each cell after the polygonal area identification design according to a planning assumption in a plan view of a design drawing, and then arranges equipment devices in the plan view area and draws connecting lines and the like between the equipment devices. In the design drawing scheme output by the operation mode, antennas, connecting lines and other devices are distributed in a cell coverage area polygon drawn in a plan view; once a design error or other reasons are met, the topological connection relation of the cell equipment in the design scheme does not actually belong to the cell, and early warning cannot be given, the design scheme cannot be accurately matched with the initially planned and assumed cell coverage area, and the accuracy rate cannot be guaranteed.
By the 2 methods, the plan drawing of the design plan depicts the polygon of the cell coverage area, and the accuracy and the reasonability of the cell coverage area depend on the skill level and the professional moral of a designer seriously.
Therefore, it is necessary to provide a method for determining discontinuous cell coverage in the digital cell division design to solve the above technical problem.
Disclosure of Invention
The invention provides a method for judging discontinuous cell coverage of a digital indoor distribution design scheme, which solves the problem that the accuracy and the reasonability of manually describing a polygonal marked cell coverage area can not be ensured when a digital system scheme in the field of indoor distribution coverage of wireless communication is designed.
In order to solve the above technical problem, the method for judging discontinuous cell coverage of the digital indoor partition design scheme provided by the invention comprises the following steps:
selecting a design plan of a cell coverage area to be identified, and automatically generating a plan building outline polygon;
step two, retrieving all terminal antenna equipment belonging to the cell, automatically identifying the name of the cell to which the equipment belongs, and recording the position of the equipment;
step three, calculating a simulation polygon of a signal coverage area of each terminal antenna type device in the plan view by combining the building outline of the plan view; merging the simulation polygons corresponding to the terminal antenna devices belonging to the same cell; after the merging process is finished, 1 or more polygons in the signal coverage area of the cell can be obtained;
step four, traversing the signal coverage area polygons of all the cells of the plan of the design scheme, and judging whether a closed area formed by the signal coverage area polygons of the cells is discontinuous or not one by one; if not, the solution is not reasonable and the polygons and the cell end antenna devices are marked with color rendering and the designer is prompted to revise the design solution.
Preferably, in the step one, the two-dimensional CAD plan building vector diagram is automatically sampled according to a scaling factor S to generate a point set, the scaling factor S supports manual setting, and a default value is set as the number of CAD length units corresponding to 1 meter length in the plan drawing frame on the CAD drawing.
Preferably, in the first step, a boundary polygon generated by the point set is used as the building outline, and a specific implementation method for automatically generating the boundary of the two-dimensional CAD plane discrete points is to generate the building outline polygon by using an Alpha Shape algorithm.
Preferably, when the step two is executed, manual setting of a cell basic unit is supported, and the default cell basic unit is an extended unit device type, such as RHUB, IRU, mHUB, and the like; the cell base unit also supports user self-setting changes.
Preferably, when the second step is executed, the cell basic unit device is used to retrieve the terminal antenna device and the location to which the cell belongs, and mark the terminal antenna device and the location as the same cell.
Preferably, when the step three is executed, end antenna device signal coverage area polygons with shared adjacent edges are combined iteratively in the same cell until all end antenna device signal coverage area polygons do not have shared adjacent edges in the cell.
Preferably, when the step four is executed, the method for determining discontinuity of the closed region formed by the cell signal coverage region polygons excludes the case where a plurality of polygons are bridged together by a point.
Preferably, when the step four is executed, besides the color rendering identification signal covers the polygon of the signal coverage area of the discontinuous cell, the device equipment related to the cell is also specially marked, and when the scheme is unreasonable, besides the color rendering identification signal marks the polygon of the signal coverage area of the cell, the device equipment related to the cell is also specially marked, such as cross marking or highlighting, so as to facilitate scheme modification.
Compared with the related technology, the method for judging discontinuous cell coverage of the digital indoor distribution design scheme provided by the invention has the following beneficial effects:
the invention provides a method for judging discontinuous cell coverage of a digital indoor division design scheme,
1. according to the invention, through the cooperation of the flow steps, the cell coverage polygon can be automatically generated by a computer, and revision reminding is provided for the unconnected cell coverage, so that the production efficiency and the accuracy of the design scheme are improved, unreasonable places in the scheme are avoided, the blank is effectively filled, the verification efficiency and the trust degree of a receiving unit of each cooperation link in the design field on the design scheme are greatly improved while drawing a polygon marked cell coverage area by manual error or manual fake is avoided, the cooperation efficiency among units is also improved, and the requirements of quick assistance and work development among cells are met;
2. the invention provides a method for automatically depicting a cell coverage area by a computer, judging whether the coverage area is disconnected and reminding revision aiming at the condition that the accuracy and the reasonability of manually depicting a polygon of the cell coverage area cannot be ensured when a digital system scheme in the field of wireless communication indoor distributed coverage is designed; the method can avoid errors or fakes of manually drawing the cell coverage area in the scheme design process, improves the design production efficiency and accuracy, promotes the auditing efficiency and the trust degree between the receiving ring sections of the design scheme, and has simple operation and easy popularization.
Drawings
Fig. 1 is a flow chart of a method for determining discontinuous cell coverage in a digital indoor partition design according to a preferred embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for determining discontinuous cell coverage in a digital indoor partition design according to a preferred embodiment of the present invention. The method for judging discontinuous coverage of the cell in the digital indoor distribution design scheme comprises the following steps:
selecting a design plan of a cell coverage area to be identified, and automatically generating a plan building outline polygon;
(1) Carrying out point sampling on the input two-dimensional CAD plan building vector diagram according to a certain proportion coefficient S to generate a point set;
(2) Solving the boundary of the two-dimensional plane point set to obtain a polygon, wherein the polygon is the outline of the building;
step two, retrieving all terminal antenna equipment belonging to the cell, automatically identifying the name of the cell to which the equipment belongs, and recording the position of the equipment;
(1) Defining a "basic unit" of a cell, the following first or second condition needs to be satisfied:
a first condition, assuming a certain device type belonging to a cell, not a leaf node in a "device connection system diagram" tree; and simultaneously satisfies conditions A1 and B1;
a1: only part of the equipment belongs to a certain cell, and the other equipment belongs to 1 or more other cells;
a2: all devices connected in the direction of the leaf node belong to the same cell without exception;
at this time, defining the device type as a basic unit of the cell;
the second condition, assuming a certain device type belonging to a cell, belongs to a leaf node in a "device connection system diagram" tree, and satisfies the condition:
in the father nodes of the device type, at least one father node is provided, only part of devices in the type of devices in all leaf nodes connected with the father node belong to a certain cell, and the others belong to other cells;
at this time, defining the device type as a basic unit of the cell;
(2) Automatically retrieving all basic unit devices in the design plan and identifying cell names to which the basic unit devices belong;
(3) Aiming at each cell, the computer automatically traverses all basic unit equipment belonging to the cell one by one to leaf nodes in a corresponding 'equipment connection system diagram' tree, finally retrieves terminal antenna equipment represented by all the leaf nodes belonging to the cell, and marks the terminal antenna equipment and the terminal antenna equipment as the cell name in a design plan diagram and an equipment connection system diagram; if the search result is null, prompting that the cell does not find an antenna, and whether the design is wrong or not to jump out of the processing step for scheme revision is carried out;
(4) If the cell basic unit is the terminal antenna equipment, neglecting to search the terminal antenna equipment and the mark;
step three, calculating a simulation polygon of a signal coverage area of each terminal antenna type device in the plan view by combining the building outline of the plan view; merging the simulation polygons corresponding to the terminal antenna devices belonging to the same cell; after the merging processing is finished, 1 or more polygons in the cell signal coverage area can be obtained;
(1) Obtaining respective Thiessen polygons by adopting a Thiessen polygon algorithm according to the simulated polygons of the signal coverage area of the terminal antenna equipment;
(2) Marking a simulation polygon of a signal coverage area of terminal antenna equipment belonging to the same cell as a Q set;
if the number of the elements of the Q set is 1, only 1 simulation polygon is needed at the moment, and the simulation polygon is a cell signal coverage area polygon;
if the number of elements in the Q set is more than or equal to 2, randomly selecting 2 of the elements and recording as x and y, if at least one common edge exists in the x and the y, carrying out merging processing to generate a new polygon z (the edge of the z consists of the unique edges of the x and the y), removing the x and the y from the set Q, putting the z into the set Q, and iteratively generating a new set; otherwise, abandoning the combination; carrying out combined iterative processing on the updated Q set until all elements in the set Q have no common side pairwise, wherein at the moment, 1 or more polygons in the set Q are polygons in the cell signal coverage area;
step four, traversing the signal coverage area polygons of all the cells of the plan of the design scheme, and judging whether a closed area formed by the signal coverage area polygons of the cells is discontinuous or not one by one; if the scheme is not continuous, the scheme is unreasonable, the polygons and the cell terminal antenna equipment are marked by color rendering, and designers are prompted to revise the design scheme;
(1) Checking whether the number corresponding to the polygon of the signal coverage area of the cell, namely the number of the elements of the set Q after the processing of the step three is 1, if so, the signal coverage area of the cell is continuous;
(2) If the number of the elements of the Q set is more than or equal to 2, randomly selecting 2 elements, marking as a and b, and judging whether a and b have a common intersection or not; if not, jumping out of the sub-step; if yes, the 2 polygons are combined to be an a & b area, the a & b area is taken as a new element and is put into a Q set, and a and b are moved out of the Q set;
(3) Repeating the processing of the substep (2) until the element of the set Q is 1; or the number of the elements is more than or equal to 2, but no cross point exists in any element area;
(4) Obviously, if the number of elements in the set Q is greater than or equal to 2, the signal coverage area of the cell is discontinuous, and the scheme is not reasonable.
In the first execution step, a two-dimensional CAD plan building vector diagram is automatically sampled according to a proportionality coefficient S to generate a point set, the proportionality coefficient S supports manual setting, a default value is set to be the number of CAD length units corresponding to 1 meter length in a plan drawing frame on a CAD drawing, the requirement of the accuracy of CAD drawing generation of a cell on a computer is met, and the problem that the large error of the CAD generated drawing of the cell affects the accurate judgment of a user on a discontinuous cell coverage scheme is avoided.
In the first step, the boundary polygon generated by the point set is used as the building outline, and the specific implementation method for automatically generating the boundary of the two-dimensional CAD plane discrete points is to generate the building outline polygon by adopting an Alpha Shape algorithm, so that manual drawing work is replaced, and the generation quality of the cell overall coverage effect graph is further improved.
When the step two is executed, manual setting of a cell basic unit is supported, and the default cell basic unit is an extended unit device type, such as an RHUB, an IRU, an mHUB, and the like; the basic cell of the community also supports the user to set and change by oneself, meets the diversity requirement of the scheme, and is convenient for the user to operate the scheme in various styles.
And when the second step is executed, the terminal antenna equipment and the position of the cell are retrieved by the cell basic unit equipment and marked as the same cell, so that the accuracy of the cell position is improved, and later-stage users can conveniently perform positioning and visiting and flow visiting on the cell.
And when the third step is executed, aiming at the same cell, iteratively combining the polygons of the signal coverage areas of the terminal antenna equipment with the shared adjacent edges until all the polygons of the signal coverage areas of the terminal antenna equipment with the shared adjacent edges do not have the shared adjacent edges, ensuring the accurate division of the adjacent edges between the cells, and showing the polygons, thereby facilitating the quick observation and understanding of a user.
And in the fourth step, the condition that a plurality of polygons are bridged together by points is eliminated by the discontinuous judgment method for the closed region formed by the polygons of the cell signal coverage region, so that the distinguishing accuracy of adjacent sides of the cells is improved, and the overlapping condition of the same cell is avoided.
When the fourth step is executed, except that the color rendering identification signal covers the signal coverage area polygon of the discontinuous cell, the device equipment related to the cell is also specially marked, under the unreasonable condition of the scheme, except that the color rendering identification signal marks the signal coverage area polygon of the cell, the device equipment related to the cell is also specially marked, such as cross mark or highlight display, so that the scheme is easy to modify, a user can quickly know the scheme, errors are avoided in the scheme, the rationality of the scheme is greatly optimized, and the work can be quickly carried out among units.
Compared with the related technology, the method for judging discontinuous cell coverage of the digital indoor distribution design scheme provided by the invention has the following beneficial effects:
according to the invention, through the cooperation of the flow steps, the cell coverage polygon can be automatically generated by a computer, and revision reminding is provided for the unconnected cell coverage, so that the production efficiency and the accuracy of the design scheme are improved, unreasonable places in the scheme are avoided, the blank is effectively filled, the verification efficiency and the trust degree of a receiving unit of each cooperation link in the design field on the design scheme are greatly improved while drawing the polygon marked cell coverage area by manual error or manual fake, the cooperation efficiency among units is also improved, and the requirements of rapid assistance and work development among cells are met.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A method for judging discontinuous cell coverage of a digital indoor division design scheme is characterized by comprising the following steps:
selecting a design plan of a cell coverage area to be identified, automatically generating a plan building outline polygon, automatically sampling a two-dimensional CAD plan building vector diagram according to a proportionality coefficient S to generate a point set, wherein the proportionality coefficient S supports manual setting, a default value is set to be the number of CAD length units corresponding to 1 meter length in a plan drawing frame on a CAD drawing, a boundary polygon generated by the point set is used as a building outline, and a specific implementation method for automatically generating the boundary of the two-dimensional CAD plane discrete points is to generate the building outline polygon by adopting an Alpha Shape algorithm;
step two, retrieving all terminal antenna equipment belonging to the cell, automatically identifying the name of the cell to which the equipment belongs, and recording the position of the equipment;
step three, calculating a simulation polygon of a signal coverage area of each terminal antenna type device in the plan view by combining the building outline of the plan view; merging the simulation polygons corresponding to the terminal antenna devices belonging to the same cell; after the merging process is finished, 1 or more polygons in the signal coverage area of the cell can be obtained;
step four, traversing the signal coverage area polygons of all the cells of the plan of the design scheme, and judging whether a closed area formed by the signal coverage area polygons of the cells has a discontinuous condition one by one; if not, the solution is not reasonable and the polygons and the cell end antenna devices are marked with color rendering and the designer is prompted to revise the design solution.
2. The method of claim 1, wherein step two is executed to support manual setting of a cell basic unit, wherein the default cell basic unit is an extension unit device type, and the cell basic unit also supports user-defined setting and changing.
3. The method of claim 1, wherein in the step two, the cell base unit device is used to retrieve the terminal antenna device and the location of the cell, and mark the terminal antenna device and the location as the same cell.
4. The method according to claim 1, wherein in the third step, polygons of signal coverage areas of terminal antenna devices having common adjacent edges are iteratively combined for the same cell until polygons of signal coverage areas of all terminal antenna devices having common adjacent edges do not have common adjacent edges.
5. The method for determining discontinuous cell coverage according to claim 1, wherein said step four is performed, and the method for determining discontinuous cell coverage in the closed area formed by the polygons of the cell signal coverage area excludes the case of bridging a plurality of polygons together by points.
6. The method according to claim 1, wherein said step four is executed to perform special marking of the device equipments related to the cell in addition to the color rendering identification signal for marking the polygon of the signal coverage area of the cell with discontinuous coverage, and in case of unreasonable scheme, perform special marking of the connected device equipments related to the cell in addition to the color rendering identification polygon of the signal coverage area of the cell.
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| CN102223646B (en) * | 2010-04-13 | 2014-08-13 | 北京亿阳信通科技有限公司 | Simulative division method and system for cell coverage |
| CN104700418A (en) * | 2015-03-24 | 2015-06-10 | 江南大学 | Method for estimating precise circumferences of target boundaries based on gray level information |
| CN105722025A (en) * | 2016-01-15 | 2016-06-29 | 中国联合网络通信有限公司广东省分公司 | Target client sample selection method and system based on base station communities |
| US10098007B2 (en) * | 2016-08-15 | 2018-10-09 | T-Mobile Usa, Inc. | Coverage management for wireless communication network |
| US11006364B2 (en) * | 2018-06-15 | 2021-05-11 | Qualcomm Incorporated | Beam tracking and recovery in connected-mode discontinuous reception mode |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101668296A (en) * | 2008-09-03 | 2010-03-10 | 中国移动通信集团上海有限公司 | Method and device for determining communication zone boundaries |
| CN109472075A (en) * | 2018-10-30 | 2019-03-15 | 成都四方伟业软件股份有限公司 | A kind of base station performance analysis method and system |
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Denomination of invention: A Method for Judging the Discontinuity of Community Coverage in Digital Room Separation Design Scheme Effective date of registration: 20231222 Granted publication date: 20230117 Pledgee: Societe Generale Bank Limited by Share Ltd. Guangzhou branch Pledgor: GUANGZHOU TIANYUE COMMUNICATION TECHNOLOGY DEVELOPMENT Co.,Ltd.|GUANGZHOU TIANYUE ELECTRONIC TECHNOLOGY Co.,Ltd. Registration number: Y2023980073707 |