Method and system analysis and design network connection (options)
The invention relates to computer technology and can be used for modeling communication systems. The technical result is to optimize performance of the system. Methods based on the use of computer models of the physical environment. The device contains means for selecting network elements, and to display and store information about the parameters of the network elements. 4 N. and 32 C.p. f-crystals, 19 ill.
The scope of the invention
The present invention mainly relates to techniques and systems for designing radio network, particularly to a method for processing a list of materials in real time when designing, evaluating or optimizing performance and/or cost of a wireless system using three-dimensional (3-D) representation of the environment.
The previous description of the technical solutions
As expand the scope of Radiocommunication calculation of the coverage area of radio frequency signals within individual buildings and the penetration of the signal from external sources transfer in buildings is an important element of design for radio engineers, who must create and install a system of cellular phones, network peijin the Designers often need to determine exactly whether the location of the radio-frequency transceiver or cell site base station to provide reliable service throughout the city, institution, building, area or territory. A common problem for Radiocommunication systems is not meeting the demand of the service area or "dead zone" in a certain place, such as a meeting. It has now become clear that the internal wireless institutional telephone station or a local radio network (WLAN) may become useless due to interference from closely spaced similar systems. The cost of the intra-and microcellular communication devices that provide coverage in a radius of 2 km, is reduced, and the workload for engineers and technicians who need to install these systems inside buildings, increases dramatically. Quick design engineering and deployment methods for microcellular and indoor systems essential for implementing cost-effective projects.
Analysis of service area by radio signals, the penetration of signals and noise are of particular importance for several reasons. The project engineer should determine whether existing large external radio system or macro the University).
On the other hand, the radio must determine whether the coverage in the local area sufficiently to be supplemented with other existing macro-cellular structures, or need to add an internal transceivers or picosat. The location of these structures is critical, both from a cost perspective and from the point of view of their effective work. If you are developing a system of internal radio, which is subject to interference from signals of the external macro-cellular structure, the designer must anticipate what might be expected, the magnitude of the noise and where it will occur inside a building or group of buildings. From an economic point of view, it is very important to develop a communication system with a minimum cost of infrastructure equipment, as well as the cost of its operation. As a result, microsata systems of cellular communication, these issues must be resolved quickly, systematic and reproducible manner without difficulties and excessive costs.
Now on the market there are many computer-aided design (CAD), which can be used to calculate the environment, such as institutions or territory.
Examples of computer-aided design of radio communication devices. the and practice, however, existing buildings or public universities designed on paper only, and the data environment to determine not just. It can be difficult or impossible to collect this disparate information and to use the data for purposes of planning and implementing internal and external communications systems, and each new environment requires tedious manual formatting data to start working with computer models forecasting the radio.
Recent research projects carried out in the laboratories of AT&T, Brooklyn Polytechnic, and Virginia Technological institutions described in scientific papers and technical reports entitled "Measurement and prediction of radio wave propagation at 908 MHz and 1.9 GHz using three-dimensional ray tracing in urban environments" (Proceedings of IEEE vehicle technology, so 48, No. 3, may 1999, S. Kirn, B. J. Guarino, Jr., T. M. Willis III, C. Erceg, C. J. Fortune, R. A. Valenzuela, L. U. Thomas, J. Ling and J. D. Moore ("Propagation"), "Achievable accuracy of forecasting specific to this area of the damping channel in stationary environments," Proceedings of the IEEE, I. 48, No. 3, may 1999), L. Piazzi, and H. L. Burroni, "Attenuation of p is, so 46, No. 11, November 1998), Durgin, T. S. Rappaport, and X. Hu, "forecasting Technique radiowave propagation modelling and computer simulation of channels for integrated Microsystems radio annual report APIR (Agency promising research projects), technical report MPRG, MPRG-TR-94-12, July 1994, 14, C., Institute of Technology Virginia tech, high speed Internet access, T. S. Rappaport, M. P. of Kushik, J. To.Liberty, as Pendula, Etc. Subramanian; "the Technique of predicting the propagation of radio waves and computer modeling of channels for integrated Microsystems radio communications", technical report MPRG, MPRG-TR-95-08, July 1995, 13 pages, Technological Institute of Virginia, high speed Internet access, T. S. Rappaport, M. P. of Kushik, K. Carter, and M. Ahmed, "Use of topographic maps with information about the buildings to determine the placement of antennas and coverage of the satellite global positioning system to detect and trace the signal in an urban environment", technical report MPRG MPRG-TR-95-14, September 15, 1995, 27 pages, Technological Institute of Virginia, high speed Internet access, T. S. Rappaport, M. P. of Kushik, M. Ahmed, K. Carter, "Use of topographic maps with information about the building to determine the location of antennas for detecting and tracing radiosignal, M. Carter, P. Of Kushik, U. Of Newhall Community, & Kidman, N. Zhang and T. S. Rappaport; "Tool for the design of integrated systems in-house and mobile radio communications", MPRG-TR-97-13, June 1997, page 122, Technological Institute of Virginia, P. P. Skidmore and T. S. Rappaport; "the Predicted attenuation for, Rosslyn, Virginia", MPRG-TR-94-20, 9 December 1994, page 19, Technological Institute of Virginia, high speed Internet access, S. Sandhu, P. of Kushik and T. S. Rappaport; "the Predicted decay channels, Rosslyn, Virginia, “The second set of predictions for ORD project on the prediction of the dependent areas of the radio wave propagation”, MPRG-TR-95-03, 5 March 1995, page 51, Technological Institute of Virginia, high speed Internet access, S. Sandhu, P. of Kushik and T. S. Rappaport.
These works and technical reports illustrate the state of the art modeling and dependence on the location and distribution of radio waves and show the difficulty of obtaining databases for urban environment such cities as Rosslyn, Virginia. As the above papers describe the comparison of the study measured signal coverage with predictable, these works do not reveal systematic, rapid and reproducible methodology for creating the database environment, and they do not describe the methods of analysis of working harayeva required to provide signals in a system of radio communication in this environment. Although there are many ways suitable for the design of the radio network to ensure proper coverage of the service area, there is no guarantee that the system will be cost-effective. For example, even if the coverage area provided by the selected infrastructure radio communications will be more than sufficient, the overall system cost may be too high.
BRIEF description of the INVENTION
The aim of the invention is to develop a fast and automated way to create a list of materials and cost information in real time, as determined by the nodes to the desired radio system and replaced with removable nodes with simultaneous prediction performance of the radio system. This automatic way to compare in real time the value and characteristics of competing products or competing methodologies represent significant value for radio engineers and provides a significant improvement compared with the known technique.
In accordance with the present invention, the designer creates a model of the desired radio system and identifies each node is required to ensure stable enough or o them working performance and value.
Using this method, the user can quickly change the physical location of the nodes in the communication system, to explore alternative configurations that may include various components, such as antennas and cables, or to use different ways of distribution of radio frequencies and/or different types of systems coaxial or optical splitters, etc. Economic parameters include the price of units and the cost of their installation. As changes in the system under certain scenarios, some nodes are replaced by others, changing the length of the cables; antenna and base station moved to its new location and so on, whenever any node is added to the system or removed from, the list of materials is automatically adjusted, and the cost of the nodes, the total cost and modified settings of the operating characteristics of the system are immediately available to the designer. The designer can choose to replace the nodes at less expensive. System performance automatically adjusted as the selection value to allow the designer to immediately assess changes in performance and cost of the system.
BRIEF DESCRIPTION of DRAWINGS
Videocase the preliminary variant of the invention with reference to the drawings.
In Fig.1 presents an example of a simplified floor plan of the building;
in Fig.2 shows the actual penetration of the emitted radio frequencies in the building from the macro-cellular structures (macrocell);
Fig.3 shows a simplified floor plan of the building, including the external macro-cellular structure and internal base station;
in Fig.4 shows the General plan of Fig.3 but with a modified base station with noise suppression device;
Fig.5 is a block diagram of the General method used for the design of radio communication network;
Fig.6 is a block diagram of the method used to obtain estimates on the basis of field measurements;
Fig.7 is a block diagram of the method used to compare the best distribution settings data measurements;
Fig.8 is a block diagram of a method of forecasting;
Fig.9A and 9B are a detailed flowchart of the method for creating the project, the radio communication network and determine its adequacy;
Fig.10 is a block diagram showing the method for use of observation points during a move or change antennas;
Fig.11 is a simplified floor plan of the building with the base station and the selected observation points;
Fig.12 - the dialog box display the location of the selected points of observation and selection of the displayed information; and
FIA (RSSI) for the selected observation points;
Fig.14 is a simplified floor plan of the building moved with the base station and the changed values of the RSSI for the selected observation points;
Fig.15 is a simplified floor plan of the building with the reconstructed base station and modified RSSI values for the selected observation points;
Fig.16 shows the final bill of materials for drawing a preferred variant of the invention; and
Fig.17 shows the final bill of materials for the drawing after the database has been added to the cost of the preferred variant of the invention; and
Fig.18 is a block diagram showing the overall method of the present invention.
A DETAILED DESCRIPTION of the PREFERRED VARIANT of the INVENTION
The design of radio communication systems
Using this method, the engineer can evaluate the surrounding RF environment systematic, structured way, through a rapid assessment of signal intensity or interference, or by measuring other parameters of the radio system. This option is designed specifically for use with the complete equipment SitePlanner, Wireless Valley Communication, Inc. of Blackburg, Virginia. However, experienced professionals it is clear that this method can be applied to other the firm's Wireless Valley Communications, Inc.)
Refer now to Fig.1, which shows a two-dimensional simplified example of a floor plan of the building. The method uses three-dimensional computer image of a building or set of buildings and/or surrounding terrain and vegetation. However, for simplicity of the image using two-dimensional (2-D) image. Various physical objects in the environment, such as outer walls 101, the inner walls 102 and 103 overlap are assigned to the appropriate physical, electrical, and aesthetic values. For example, the outer walls 101 can be assigned to the attenuation 10 dB, the signals passing through the inner wall 102 can be assigned to an attenuation of 3 dB, and the window 104 may have an attenuation of radio signals 2 dB. In addition to fading, obstacles 101, 102 and 103 are assigned to the other parameters, including the reflection coefficients and surface roughness. Estimated partial attenuation values of electrical parameters can be obtained from published results of measurements of radio wave propagation, obtained from field experiments, or partial attenuation of a single object can be measured directly and immediately optimized using the joint of the present invention is the creation of a database of a computer model of the radio communication network", registered T. C. Rappaport, and P. P. Skidmore. Once you have all of the appropriate physical and electrical parameters in a database of three-dimensional buildings can be placed any number of equipment units of the sources of RF radiation, the intensity of the received signal (RSSI), network bandwidth, the frequency of occurrence of errors in bits or frames, and the relationship of carrier - to-noise ratio can be derived through the plotter directly to computer-aided drawing (CAD).
Database of three-dimensional environment can be obtained in many ways. The network throughput analysis, frequency planning, interference analysis from an adjacent channel can be made according to this invention simultaneously with the definition of the zone of radio coverage. Other indicators of the performance of the system can easily be included by experienced specialists in the database through the well-known equations.
In Fig.2 presents the actual penetration of radio frequencies in the building from a remote macro-cellular structures located within line of sight through the distributed antenna without loss. Please refer to Fig.2, which depicts several Windows 104 and even large glazed tocasino contour lines 108 and 109 to 0 dB and - 0 dB, respectively. Even if this is the case, the inner wall 102 reduce the signal levels in some areas below the minimum value, which can be used when the signal intensity of about -90 dB, especially in some of the southern areas, as shown with contour lines 110. Accordingly, the service area from the macro-cellular structure there will probably be insufficient.
Other external macro-cellular structures can be modeled in the same way, and can be applied to the contours of the intensity of their signals to determine whether a transfer to another station to compensate for the lack of macro-cellular structure to the North of the building. If you can't, then if necessary, you can easily add internal picosat (and distributed systems feeders and antennas) to Supplement the coverage provided by these macro-cellular structures, and their performance can be tested using the proposed method.
Mathematical model of the propagation of radio waves used to predict and optimize the location of the antenna in the desired environment, and may include a variety of models forecasting techniques, such as described in previously privatemi for Radiocommunication systems in multi-storey buildings, SMT", IEEE ICUPS, proceedings of 1996, P. P. Skidmore, T. S. Rappaport and L. Abbott, incorporated herein by reference. Some simple models are also briefly described in "SitePlanner 3.16 for Windows 95/98/NT “user Manual" Wireless Valley Communications, Inc., 1999), incorporated here by reference. Experienced professionals are not difficult to apply this method to other models characteristics of the system.
In many cases, the main factor limiting performance is interference, not the intensity of the signal, due to the increased use of radio communications. When using this method it is very easy to simulate interference on the installed or the system under consideration from any source. Suppose, for example, that the internal communication system selected set of frequencies, similar to that of the external radio system. Although the internal system can provide sufficient intensity of the received signal in all its areas of coverage, interference from external systems can still make internal communication system ineffective in certain areas of the building.
However, in modeling and analysis of interference should be careful, because the harmful effects may also depend on equipment and/or technology in order to have the same narrow strip and/or a broad band in the 800 MHz band, for example, advanced mobile radio communications (AMPS) system and a multiple access code division multiple access (CDMA), but users using any of these technologies can work simultaneously, if their corresponding processes demodulation suppress interference from outside the system. This variant of the invention allows the user to choose the technology of the radio interface, designed to be used by the communication system, and accordingly automatically correct prediction of interference.
In Fig.3 shows another exemplary variant of the office building, which has an internal communication system 107. In this example, the technology AMPS 800 MHz is assigned to both transmitters 106 and 107. Can be also selected other standards and radio technologies, such as CDMA and global system for mobile communications (GSM).
The present invention uses the database to provide clear standards of physical radio interface in a wide range of technologies, and the system can be easily modified for future interface standards. As the development of new technologies, an experienced specialist will be able to easily modify this invention, will this effect is checked, drawing the contours of the C/I 111 and 112 at 0 dB and -30 dB, respectively, for the external system and drawing the contours of the C/I 113 and 114 at 0 dB and 30 dB for internal systems. The circuit 114 0 dB indicates that the levels of the desired and interfering signals are equal, resulting in a signal interfering with the external system prevalent in areas outside this contour. It is obvious that the internal network is useless in most areas of the building. There are a number of possible solutions that can be analyzed by the designer using the present invention.
One of these solution is to change the location of the internal antenna system or to increase the transmitted power by adding more nodes, or to choose a different set of frequencies. These changes can be done simply by clicking the proposed method of the invention, so that new frequency channels, the location of the antenna or alternative antenna systems (such as the built-in building distributed systems, directional antennas or radiating feeders) can be quickly assessed, thus eliminating the guesswork and/or expensive experiments with the use of real hardware. Instead of displaying contarinia observation point, which immediately indicate or display the predicted performance characteristics extremely in certain points of the environment.
For example, in Fig.4 shows how the same internal communication system of Fig.3 can provide adequate protection C/I when it is associated with a distributed internal antenna system, consisting of a two-way splitter 401 (loss 3 dB + insertion loss) and two runs of cable 402 length of 40 feet to a widely used internal Omni-directional antennas 403. When looking at the new contour lines 111 and 215 with a level of 0 dB display, it becomes clear that the coverage inside the building becomes adequate; external system 106 is no longer causing significant interference in most parts of the building. Observation point allow the user to immediately determine the coverage area or other system performance without having to wait for the results of calculations and graphs outline.
The method allows to simulate any type of distributed antenna systems in several seconds for continuous monitoring and analysis of components and installation costs of the final link budget, as described below, including alternative solutions on the fly with minimal PR is aspolozhena three-dimensional database environment, where some levels of performance of a wireless system is desirable or critical. These places, called "observation points" are points in three-dimensional space, which the designer identifies visually pointing and/or clicking a mouse or other input device at the point desired location in three-dimensional database environment. Any number of these observation points can be placed anywhere in a three-dimensional environment. The observation point can be identified to predict performance in the communication system, or may be dynamically created by the user at any time when calculating the performance of a wireless system using the same point and the method of working with the mouse, as described above.
Point observations provide a graphical and/or textual feedback to the designer in relation to the performance of communication systems throughout the environment. Depending on the type of visual feedback is desirable for the designer, the observation point can be in the form of one or more of the following parameters:
the calculated number displayed as text, which represents the received signal strength ratio signalreach characteristics of the radio system;
a small area of the same color, density and/or shade of which varies in relation to a calculated metric performance of a wireless system;
colored line connecting the location of the observation point with the location of one or more antennas in the communication system,
where color, thickness, and/or other physical characteristics of the connection is changed with respect to some of the calculated operating metrics of the system and depends on the analyzed whether direct or reverse channel radio system;
a different kind, laid down by the designer; or
any combination of the above parameters.
In all cases, graphical and/or textual representation of each observation point is given to real time as a result of instantaneous calculation of the metric performance of a wireless system, which is associated with a three-dimensional database environment, and initialized by the dynamic changes in the configuration of the radio system, and/or the observation point is positioned by the user. For example, if the user again changes the location of the antenna, using a mouse or other input device, the effect of this operation on the overall efficiency of the system RA is the destination, predicted in the observation points are displayed in the form of the result in a dialog box and are recorded in a text file for later analysis. This process is described in more detail in the following sections.
In a preferred embodiment of the invention uses a three-dimensional database environment containing information useful for predicting performance characteristics of the radio system. This information includes, but is not limited to the location and the physical and electromagnetic properties of obstacles within a three-dimensional environment, where such obstacle can be any physical object or landscape in the environment (e.g., walls, doors, Windows, buildings, trees, landscape features, and so on), as well as the position and physical and electrical properties of the connecting hardware, used or modeled in the environment.
The designer identifies the location and type of all equipment radio system within a three-dimensional database environment. This process of "point and click" includes the actions of the designer selects the desired item from the computer database and visual positioning, address assignment and connection of various AP>repectfully option computer databases are described in detail below.
Finished knitted network of hardware nodes (commonly referred to as a distributed antenna) preferably is collected using operations graphical interface, drag-and-drop” or “capture and layout”, and is graphically displayed superimposed on the three-dimensional database environment. This uses Electromechanical information on each node using the library of spare parts in order to describe the physical performance of a wireless system (e.g., noise data system, the radiation characteristics of the antenna, the frequency being used, and so on). This information is used directly in the prediction metric performance of a wireless system and discussed in detail below.
The present invention represents a dramatic improvement over prior art devices, providing the developer with immediate feedback on the performance metrics of a wireless system, as soon as the user changes the physical location of the transmitter, receivers, and other nodes or modifies the antenna system otherwise. In this embodiment, to implement the specified operation ispose settings to optimize the placement of the antenna, based on the values of the operating characteristics of the radio system to be displayed at each point of observation. The person skilled in the art understands that this viewpoint can be used in various other devices. The various methods implemented in this invention, is shown below.
One of the variants of the method allows the designer to dynamically change the position, orientation, and/or any type of hardware used in the communication system, modeled in three-dimensional database.
Using this technique, the designer can identify the point of observation, representing the critical region of the three-dimensional environment, which require a certain level of operation of the radio system. Such areas may include the Executive Director of the company, boardroom, city Park or the office of the duty of the surgeon. Then the designer chooses the interest node of a wireless system. In the present invention, for example, this may be the choice of antenna or radiating feeder, however, a qualified expert in the field can see that this node can be any physical component of the antenna system. As soon as the R, moving the mouse or other pointer input devices, the user can now move the selected item to another position in the three-dimensional database environment. This allows the user to visually move the mouse cursor to work in real time, so that the cursor is always in other parts of the three-dimensional database. The present invention additionally calculates the performance of a wireless system based on RSSI, SIR, SNR, FER, BER, or other metrics, including the desired user changes the position of the selected item.
Calculations combine Electromechanical properties of each element in the communication system (e.g., noise, return loss attenuation or gain, directivity of the antenna, the electromagnetic properties of three-dimensional database environment and methods of radio wave propagation (described in detail below) to ensure that the performance evaluation of communication systems. Calculations are performed at each point of observation is selected by the user, and a graphical display of the observation point is updated to reflect the result of the calculation.
As the user moves the mouse cursor and again sets you the first node is the antenna, changing the position of the antenna changes the point of emergence of radio signals or radio-frequency radiation from the antenna and can, therefore, significantly change the respective RF signal throughout the environment. As a graphical display of the observation points is updated in real time as the re-positioning of the selected node, the designer provides instant feedback on the modified operating parameters of a wireless system and can quickly make design decisions based on the viability of the various proposed locations and/or configurations of a wireless system.
In addition to the above functionality, the designer is free to choose additional watches at any location in a three-dimensional database environment at any time during the forecast performance of the radio system. In this embodiment, a mouse click or other input device data in the desired position in the three-dimensional database environment creates a new point of observation in the selected position, which is then updated throughout the remaining area of forecast performance.
Similar is how time in relation to any of the coordinate axes in the upgrade process graphical display of all the plotted points of observation, to display the modified metric performance of a wireless system in the new orientation of the antenna.
Similarly, the designer can replace the existing hardware element in the system of Radiocommunication any other element available from the library list. However, changes to the performance of a wireless system is the result of replacing reflected on the graphic display of the observation points.
Similarly, the designer can selectively include or exclude any set of elements in the communication system selecting elements using the calculated performance of a wireless system. For example, the designer can analyze the impact of re-establishing a single antenna or to consider the overall effect on the observation point in the new positioning of the individual antennas in the radio communication network, consisting of more fixed antennas.
Similarly, the designer can make the observation point mobile. In other words, instead of positioning the point of observation and the use of a graphical display of the point of observation, indicating that changing the rate of operation of the radio system, the designer can identificirovat scenario, the position of the observation point fluctuates on a straight-line trajectory between the point and the current mouse cursor position, until you find a position within a three-dimensional database that supports the desired level of performance of a wireless system. For example, a designer may create a point of observation, in order to maintain a continuous graphic display of identical intensity of a received signal -65 dBm. If the user re-positioning, reorientation or other change elements in the communication system, the observation point continuously changes its position within the three-dimensional database environment until, until you find the position that is determined by the calculated value of the intensity of the received signal - 65 dBm.
In addition to providing designer features reorientation of the antenna and/or replacement of nodes of a wireless system in real time by a visual analysis of the impact of such changes in the selected observation points in three-dimensional database, the user can choose to support the current configuration of the radio system and to create one mobile point of observation. The thus created the observation point can be dynamically set by the user in the three-dimensional database environment in real vremennaya environment equivalent to reinstalling the observation point, to match this location. In the present invention this technique is used for mobile observation point was represented by a mobile user in a three-dimensional database environment. As in the previous scenarios, graphical display of the observation point is updated in real time to reflect the projected metric performance of a wireless system at the point of observation.
The designer can choose a particular subset of elements of the radio system, to involve them in the calculation of operating characteristics of the radio system. Thus, a graphical display of the point of observation may reflect the metric performance of individual elements of the radio system or the metric of overall performance, are affected by the selected nodes. For example, the radiation power of multiple antennas can be combined into a single unit of measurement level of a received signal. Two primary user methods single cell observation point using analysis of a straight line (or downlink) and reverse line link (or uplink communication). A direct line of communication system includes a stream of radio signals Otchet the stream of radio signals from a mobile user to a fixed communication system.
In the present embodiment, the line segments are stretched between the mobile observation point (which is also a mouse cursor) to each antenna, which the designer has included in the analysis of the performance of a wireless system. In addition, a single antenna or multiple antennas, identified as having the best performance characteristics of a wireless system, differentiated from other antennas by changing the colors and/or other physical differences of the connection lines between the antennas and the observation point. As soon as the designer will move the mouse cursor to a new location, the selected location of the observation point in the three-dimensional database and, therefore, the effective location of the mobile user is adjusted to match the corresponding position of the mouse cursor. Metric performance of a wireless system are then re-calculated for the location of the observation point of the antenna elements selected by the designer, and graphic display of the observation point and all of the connecting lines is updated accordingly.
Another improvement compared to known techniques is the possibility of using dynamic simulation move the am radio system. The antenna transmission line to the radiating elements can be represented in the form of a cable with many holes, evenly distributed along its length. This cable can cause signal loss or radiation in each hole, radiating the energy of the radio frequency signal along the length of the cable. Radiating feeder or as it is sometimes called the “cable loss” can be represented in the form of a washer hose, in which water flows seeps through a series of holes along its length.
This method allows the designer to dynamically set to a new position part of the antenna radiating feeder and see in real time the effect on performance of communication systems in a particular observation.
In a preferred embodiment, the distributed antenna system can be expressed in the form of a separate antenna or set of antennas in General, providing in the latter case, the "final" result.
In Fig.5 presents a flowchart of the method according to the present invention.
Before the operator starts the implementation of the automated prediction model in desirable environment in the functional block 10 must be created three-dimensional electronic representation of the cf itself lines, and polygons, instead of individual pixels (in raster format). The configuration of lines and polygons in the database corresponds to the obstacles and walls in the environment. For example, the line in the database can be a panel, door, tree, wall or some other barrier or wall in a simulated environment.
From the perspective of radio wave propagation, each wall or partition in the environment has several specific electromagnetic properties. When radio waves cross the physical surface, which results in multiple events. Some of the radio waves reflected back from the surface and continues through the modified trajectory. The other part of the radio waves penetrate the surface or absorbed by it and continues to move in its direction. Some of the radio waves is dissipated in the collision with the surface. Electromagnetic properties possessed by an obstacle or wall, to determine this interaction. Each wall or partition has parameters that include the attenuation coefficient, surface roughness and reflectivity. The attenuation coefficient determines the amount of power loss of signal after passing this prepyatstvovali surface gives information which is used to detect loss of signal due to reflection or scattering after a collision with an obstacle of this type.
After you create this three-dimensional database of the impediment developer performs machine design and experimentation in radio, which will be deployed in a simulated environment in the functional block 11, as described below. Cost and performance parameters of the communication systems, transmitters, lists of channels, options for placement of equipment and antenna system - all this is accounted for in accordance with the present invention.
For the best match with the experimental prediction in functional block 12 may be additionally performed RF measurements. If necessary, the database parameters that define the characteristics of walls or obstacles, can be changed using RF measurements as a guide for a more accurate representation of the simulated three-dimensional environment in functional block 13.
The results of the forecasting models can be displayed in a three-dimensional overlay data RF measurements (if available) at any time in the functional block T4. Developer Odimo, change RF predictable model in the functional block 16. If necessary, a three-dimensional database environment may be modified on the basis of the actual measurements to more accurately represent the area of coverage of a wireless system in the functional block 10 and so on iteratively until the completion of the work. The designer can arbitrarily to continue any other stage of this process.
The method according to the present invention can be used in different ways depending on the goals of the developer.
In Fig.6 shows a variant of the above method used to produce estimates based on radio measurements. Three-dimensional database environment must be created in the functional block 10. The results of field measurements collected in the functional block 12. Data RF measurements included in the drawing environment in the functional block 61. After this, the designer can generate the estimate of the power level and location of potential transmitters in functional block 62.
In Fig.7 shows a variant of the method used to achieve optimal prediction accuracy using data from radio-frequency measurements. As before, the functional block 10 Faure, the channel with the "virtual" location of macroelements and power levels in the functional block 71. Then the results of field measurements collected in functional block 12, and the "virtual" location of the interfering transmitters can be defined in functional block 72. The best distribution settings then are consistent with the measured data of the radiation from interfering devices in the functional block 73.
The following is a detailed description of the method of prediction used in the present invention. With regard to Fig.8, a three-dimensional environment definition is the input function block 801. The first stage, pre-prediction operation of the radio system is the simulation of communication systems with three-dimensional environment. Antenna and the types of the corresponding elements and antenna locations are selected in function block 802. The right antenna is selected from the list of hardware radio, which can include a variety of commercially available devices. Each antenna is placed in a desirable location within the environment, for example in a specific location on the floor or on the end of the mast in front of the building.
In the room may be many other elements and/or associated with each system antennas. These sites include, but are not limited to, the following: cables, PFIG.9A and 9B illustrate the method of input of antenna systems in a desirable environment and mainly for trade-off analysis. First of all, the designer determines the placement of outdoor radio system, if necessary, in a functional block 901. Then the designer specifies the internal base station in block 902. How to use function blocks 901 and 902 are characterized in that the internal nodes of a wireless system will certainly be different from nodes external radio system. In both cases, the designer is guided by a number of menus with the displacement of the bottom line when viewing and the option of data entry with the mouse to determine the location, type of hardware nodes and the corresponding performance of antenna systems. These data are stored in a database, which also includes the cost of production and certain information to automatically generate a complete list of materials that may be required at any time.
In order to fully describe the antenna system in the newly created (or modified) the communication system, the designer specifies the radio interface or technology and frequency associated with the communication system, in block 903. Then the designer places the completed antenna, singgih elements of the antenna system are selected from the library list, containing information on commercially available hardware nodes in a functional block 905. Then assign the specific parameters of radio technologies and frequency channel allocated to the radio system in a functional block 906. Frequency channel selected from a prepared list and are highlighted in the communication system in a functional block 907. Then, in functional block 908 is formed antenna system, selecting the antenna from the library list of spare parts, as described above.
Antenna inserted in the floor plan in the functional block 909, using button mouse or other positioning device to visually locate each element in the three-dimensional database.
At this point, or at any time after the item was placed on the floor, the designer may consider the list of materials in a functional block 910. If necessary, the parts list can be changed to add or remove nodes or change the value of an item or work characteristics functional block 911. Nodes can be replaced by similar elements for a more complete definition radio system in a functional block 913. The designer can restore the operating characteristics of the radio system in the various views, including a two-dimensional model, a three-dimensional wireframe model, a three-dimensional wireframe model with hidden lines, three-dimensional grayscale image or a three-dimensional photorealistic image in block 914.
Typically, the designer adds the nodes of a wireless system in a certain sequence, where each newly installed system element is connected with the pre-positioned element in the radio network. It should be noted that the cables and radiating feeders are determined by a set of vertices connected by lines representing the lengths of the cables laid on the floor. Cables and radiating feeders can also be installed vertically on the floors of the building, down the walls of the building through the Elevator shaft, and so on, just adding the top point of the cable, changing the vertical height and continuing the placement of the cable in new locations, as shown in functional block 915. The designer should not drive a three-dimensional representation of the environment and try to cables vertically in a three-dimensional model. The designer can repeat any stage in this process and in any order in accordance with the present invention.
Turning again to Fig.8 note that after determining the three-dimensional environment and visvasa can be created in function block 803. There are a number of such models that can be used sequentially or separately, to develop a sufficient number of "scenarios" to forecast and optimize the placement of the antenna and the constituent elements.
In Fig.10 shows how predictive modeling according to the invention.
First, the designer selects the desired model forecast performance of a wireless system in a functional block 1001.
Preferred are the following models:
- Measure the attenuation coefficient of the walls/floor model of multiple losses on the road
- Measure the attenuation coefficient of the walls/floor model single path loss
The real point-to-point model of multiple losses on the road
The real point-to-point model of a single path losses
The model of multiple checkpoint-dependent distances
- Multiple model path loss depending on the distance,
- Model single path loss depending on the distance, or
- Other brands ' models used by developers
Physical and electrical properties of obstacles in a three-dimensional environment is represented in functional block 1002. Although not all parameters are used for each possible predicted the TES model. The parameters that can be entered include
Configuration of Outlook RSSI, C/I and/or C/N (signal intensity, attitude carrier-to-noise ratio, carrier to noise ratio)
- Parameters of a mobile receiver - power, antenna gain, loss, jitter value of the portable receiver, the height of the portable receiver above the floor;
- Parameters of the signal propagation:
the attenuation coefficient in partitions
the attenuation coefficient in ceilings
- net loss on the highway
the surface roughness
- polarization antenna
- other parameters required for this model
The designer can save sets of physical, electrical, and aesthetic parameters for later use. If such a set of parameters was previously saved, the developer can load it in a function block 1003, overwriting thus the previously selected parameters.
Then the designer can choose the number of observation points in the functional block 1004 to control the operation of the radio system.
In Fig.11 shows the General layout of the base station 1100 on the floor of the room. The designer can use the mouse or on the surveillance for control. Here, for example, four were chosen observation point 1101, 1102, 1103 and 1104.
In Fig.12 shows the position of the equipment for which the selected observation point for the current forecast. The designer can choose the forecasts for the value of intensity of a received signal (RSSI), signal-to-interference (SIR) or signal-to-noise ratio (SNR). In addition, the designer can see the change in the predicted values for each observation point in real time, choosing these values by mouse movement, or may select a new antenna, press on the mouse button in this new position. When you move the mouse cursor designer is re-positioning the antenna to the beginning of the prediction. Once you have selected all of the observation point, begins to act in a predictive model.
The alternative is the input observation points in the process of using a predictive model, but not before putting it into action. Another alternative is the continuous update of the radio-frequency values in the observation points as you move the mouse without pressing buttons.
In Fig.13 shows the floor plan of Fig.11S initial values of the intensity of the received signal is estimated for each point e to the point of observation to determine coverage.
In Fig.14 shows the floor plan of Fig.11 and 13 with the antenna 1100, moved to a new location 1400. The RSSI values at each observation point 1101, 1102, 1103 and 1104 are automatically updated by the value associated with the new location of the antenna. On the other hand, the designer can choose the edit points in the antenna system 1100 because of their cost or performance.
Fig.15 shows the floor plan of Fig.11 and 13 with the base station 1001 in the same location, but with the antenna elements with a higher performance. The RSSI values at each observation point 1101, 1102, 1103 and 1104 again automatically updated on the values associated with the new settings of the operating characteristics of the radio system.
Again referring to Fig.10 models of radio coverage, we see that the area of such coatings and their values are shown in the functional block 1005. If necessary, the designer modifies the electrical parameters of obstacles or modifies elements of antenna systems, or changes the location of the antenna system or its orientation, and so on, in a functional block 1006 before performing stage forecasting in functional block 1001.
Referring to Fig.8, we see that after the test, If so, depending on results, or will need to change the location of the antennas (aerials) and elements, or only replace items without changing location. For example, even though the coverage may be more than sufficient, the total cost of the radio system could be too high for its implementation.
Below is disclosed a method of cost optimization using dynamic handling system list of materials in real time. Regardless of whether the network is optimal, all the necessary changes of the nodes can be done in this way in a functional block 802.
After approval of the project desirable in the three-dimensional base data is entered all the necessary information that will allow you to extract the necessary components from the list of materials. The location of each item is clearly displayed, and the visual three dimensional representation can be considered as a guide.
After approval of the project database stores all the information necessary to ensure the search nodes in the list of materials. The location of each item is clearly displayed superimposed on the physical environment, and visual three-dimensional the materials
As described above, the invention uses created using computer-aided design of three-dimensional interpretation of a building, complex of buildings or any other similar medium that contains information appropriate for predicting performance characteristics of the radio system. The evaluation of the electrical properties of the walls or partitions can be made on the basis of already published radio-frequency measurements and/or data specified by the designer at any time. As soon as the required electrical properties, in the three-dimensional base data may be placed in an unlimited number of sources of RF radiation, and received signal strength (RSSI) or carrier to interference (C/I) can be directly entered into a drawing obtained by using computer-aided design.
Three-dimensional database environment can be created in various ways. The workload analysis, frequency distribution and analysis of co-channel interference and interference from adjacent channels can be performed simultaneously with the analysis of RSSI, C/I and other criteria of quality radio system. Antenna system and a materials list can be created razlichnyei forms a model system of radio communication in the environment, as described above, a complete list of materials is maintained for each drawing in the environment. In other words, each drawing can contain its own unique set and configuration of the antennas, systems, signal and associated elements, representing the changes in the design of communication systems. These nodes are transferred from the global library of spare parts. Can be used in a variety of ways to create a global library of spare parts, which is obvious to the expert in this field.
According to the present invention, the developer selects a specific hardware radio system from a library of spare parts using the menu with the displacement of the bottom line and the dialog boxes. Selection criteria of a particular element depends on the design of the radio system, but generally include the desirability of selecting an item based on its electrical characteristics and the potential effect on the performance of the radio system, material cost and/or cost of installation of the system.
The present invention allows the designer to focus only on those devices, parts of which are contained in the library, and is using the nodes of a particular manufacturer or to find manufacturers, which provide desirable material cost and/or electrical characteristics. However, only those devices that meet the required criteria, are displayed for selection in the dialog boxes in accordance with the present invention.
Once selected the desired item by moving the mouse and pressing its button, or other input device data, the developer can position an element within the three dimensions of the database environment. This process requires that the developer used the mouse or other input device for visual identification of the desired position for the item by selecting the position in three-dimensional database environment by clicking the mouse button (or using another device positioning). For example, the antenna element can be placed in a specific location of the building, at the top of the mast in the center of the Park, on the wall of a building or elsewhere, which the designer will find acceptable. Similarly, items that take up a certain distance along the length (e.g., coaxial cables, fiber optic cables, radiating feeders or any element that has a significant length) selects and posizionepecorina vertices (or endpoints) of an element where each pair of vertices is connected by a transient segment representing a portion of the cable.
Thus, although some sites, such as location of antennas or power strips require only a single point in three-dimensional environment to determine their position in the system of radio communication, other nodes of the type of distribution cables or distributed antennas require the determination of a set of points connected by segments of lines for position recognition. The present invention uses a unique graphical symbols to represent each element of the radio system superimposed on the three-dimensional database environment, allowing the designer to visualize the communication system, as if it existed in the physical world. As an example graphical display and is shown for convenience only in two dimensions, Fig.4 shows a base station 107, connected by two coaxial cables 402 with two internal antennas in points 403 and 403.
This version of the invention provides information and links related to the dependency of the elements of the radio system. Such dependencies may include, without limiting this, the appropriate selection of the impedances of adjacent elements, it may require pozicionirovanija previously used sites in the three-dimensional database environment before they can be selected and added to the communication system. For example, a splitter or other device for connection to two or more independent elements, may require that an existing element was present in the three-dimensional database for the coupler with which it is associated.
In the previous embodiment of the invention, if the designer makes a choice of placing the hardware in a three-dimensional database environment, and the desired element depends on some other device, currently in a three-dimensional database, the designer is asked via a selection box to determine the position of a dependent element and the selected element, respectively. In the previous example, node bifurcation, if the designer selects the connection tee to the end of the existing cable, identifying cable element with the mouse or other input device, the position of the splitter in a three-dimensional database is automatically defined as the end of the identified cable. The nodes of wireless systems that do not have such dependencies (for example, priemere, which designer will find suitable. Although this description refers to one particular variant of the invention, the person skilled in the art understands, that may be a different implementation of the method, without leaving the scope of the present invention.
Using the preferred variant of the invention, the designer can simulate, represent visually and mathematically sophisticated radio system that includes any number of separate hardware selected from the parts listed in the library and linked to each other to form a complete antenna system. Because each element has the appropriate characteristics related to electrical properties (e.g., antenna gain, the amount of noise, attenuation), and the cost, add, delete or change any element directly affect the operation of the radio system and its total cost.
In a preferred embodiment of the invention, this information is updated in real time as you change the radio system designer. If the communication system includes a specific hardware element, the present invention finds appropriate Electromechanical characteristie is stored in the database and used in the right moment to determine the effect, which has this item on various aspects of the design parameters of the radio system or its operation. For example, if the library containing the information for a specific cable, indicates that loss on the attenuation of the cable is 3.5 dB per 100 m, and the designer has added the segment cable length of 200 m of cable to the communication system, the present invention combines information regarding the location of equipment and cable length in three-dimensional database of environmental information loss attenuation from the library of spare parts and determines that the total loss on the attenuation of this cable will be 7 dB. In addition, calculates the amount of noise and other relevant quality cable on the basis of the well-known theory of radio communication.
If the designer then enters the radio amplifier and connects to one end of the cable, as described above, the invention finds information on this amplifier from the library of spare parts in order to determine the overall gain of the distributed radio system. If, for example, the selected amplifier has a gain of 10 dB and some certain amount of noise, the present invention combines the characteristics of the clients and a new quantity of noise in the system.
If the designer edits or modifies the General information in the library of spare parts, it is automatically reflected in the forecast performance of the radio system. For example, if the amplifier in the above example has a gain associated with the change of parts from a library of about 10-15 dB, the overall characteristics of the system, which may include a certain gain and the magnitude of the noise cable and amplifier from the above example, automatically re-calculated, leading to an overall gain of 8 dB instead of 3 dB.
Similarly, if the cable is passed on to another site to change its length or replaced with another element from the library of spare parts, the effect of this action is automatically taken into account, as it is reflected in all subsequent operations. Although this example is limited to a simple value gain and loss in individual elements of the radio network, the person skilled in the art can apply the same method to any other electrical, Electromechanical, financial, aesthetic, or other quality associated with items in the library of spare parts and the whole system in the same way.
Preferred library spare cha and / or methodology of the project radio system. In the preferred library parts spare parts there are eight main categories of elements used in the preferred embodiment, although you can add other categories.
1. Amplifiers/attenuators - in a General sense devices that increase or decrease the intensity of the radio signal.
2. Connectors/splitters - generally speaking, devices that connect one or more elements of one or more additional elements.
3. Cables a variety of cable types (for example, fiber optic cable, coaxial cable, twisted pair, and so on).
4. The antenna is defined by the manufacturer, the type of radiation of any antenna, the manufacturer which provides information about the beam of this antenna. The radiation diagram of the antenna describes the manner in which radio signals are radiated by the antenna. Manufacturers antennas provide the buyer with information about their antennas so that the designers of the radio system could achieve maximum operating efficiency of the antenna.
5. Universal antenna - any universal or ideal antenna (i.e. the antenna, which may not be physically feasible or has a universal beam).
6. Analnogo coaxial cable.
7. Base station/repeater is part of the control system network. The base station controls all the operations of communication in radio networks.
8. Other device - any item that does not belong to any of the above categories.
Each element has a number of relevant values. They include the following:
- name of manufacturer;
- serial number details
the description provided to the users;
- frequency range, which tested this item;
- the number of connections;
- the cost of installation and
the radiation diagram of the antenna.
Nodes, base stations and repeaters have a number of additional parameters, including, but not limited to:
- radio interface - identifies the wireless technology used in the base station (for example, AMPS (analog cellular), IS-I36 ("digital cellular") LEEE 802.11 ("local network"), and so on);
- allocation of frequencies/channels - specifies the radio frequency and radio channels that the base station may use;
- transmission power value of the output transmission power of the base station.
The selection of the preferred option list parts identification numbers lines that are not actually included in the database, see the|(GENER1C CONNECTOR|CONNECTOR|GENERIC|N/A|900|1|2|0|N/A
4: 2|GENERIC SPL1TTER|CONNECTOR|GENERIC|N/A19001|2|310|N/A
5: 3|GENER1C 10 dB AMPUFlER|AMPLlFlER|GENERIC|N/A|190|10|2|0|N/A
6: 4|GENER1C LEAKY
Row 1 is a header row indicating the field names, separated by " | " character. The first field ("KEY"; the second field ("POSITION"; the third field ("TYPE", etc. Next to the last field is the cost in US dollars. Rows 2-6 shows five data records in the list of parts for the following items:
- typical transmission line,
- standard connector,
- typical splitter,
- typical amplifier 10 dB and
- typical radiating feeder.
The parts list can be easily changed by the developer, as new sites on the market, their withdrawal from the market or their new rates. Ability to maintain a unique list of equipment for each drawing allows the designer to quickly conduct a comparative analysis in order to compare and contrast the performance and cost of the various items offered by the seller. The effect of using a particular item in terms of its cost and performance of a wireless system can be immediately estimated using the present invention.
Information that can be traced using the list of materials on the key losses of radiofrequency radiation, connection and frequency for which the selected item is optimal. In addition, a wide range of products manufactured according to the specifications of the customer, so that the designer could use the list of products library to solve the final problem. In addition, since the nodes with relevant data on length, such as cables or radiating feeders are created, routed, moved or changed, their cost and impact on the performance of the radio system automatically corrected in the list of materials to reflect changes in length. In addition, the parts list is stored as an integral part of the database of the drawings, allowing the user to retrieve from the archive and place the data systems design and features of these systems. In addition, the performance of the radio system can be calculated again, using either the standard equation of the budget line equation data noise or some other indicator type frequency error in the discharge or network bandwidth. In this calculation are some electrical specifications of each element in the system, which is also stored in the materials list.
the La of the drawing. Description base station "BLOCK" 1610 shown to identify the antenna system, for which illustrates this result. The first node 1611 - panel network of personal computers 1710-1990. Point antenna with a gain of 9.00 dB produced by Allen Telecom. It should be noted that the cost of parts 1612, an intermediate value of 1613 and overall system cost 1614 zero dollars. This means that the designer has not yet updated library of spare parts, current prices for equipment. After you update the list in the final account will be automatically shown the components of COSTS, as well as subtotals and the total price for all base stations and elements in the drawing.
In Fig.17 shows a list of materials, where all prices entered in the database of spare parts list. In addition, to the base station "BLOCK" was added another element 1720. The drawing shows the price of each item a and 1721. Also shows a running total of 1613 and the total cost a.
Refer now to Fig.18, which presents a General method according to the present invention. As described above, first, the designer must create the database desirable environment in a functional block 180. Then, it creates a base on which these items are automatically generates a list of parts, grouped base station and antenna system. A materials list can be displayed at any time in the functional block 182.
In order to optimize the design of the radio system and to ensure adequate coverage area of the antenna, the designer creates a number of forecasting models and implements a method of optimizing a functional block 183. The preferred method of prediction described above. This method allows the designer to see real-time changes in coverage in General and for specific selected observation points, if the antenna is installed again or reoriented. The designer can select, add, delete, or replace nodes in a functional block 184 and then re-enter the model in a functional block 183. Every time the designer makes changes in the system to improve its work, the materials list is automatically updated. The designer can use a predictive model in the functional block 183 and to determine whether the communication system requirements in regards to its performance and COST. If it does not, the designer can make a choice in favor of changes to nodes on the basis of cost considerations Il is proektirovschiku to choose replacement units and parts list, which contains only those nodes that do not would impair performance of the entire system. It is necessary to note that in the preferred embodiment, the analysis system or model performance recalculated again after the user request, but the person skilled in the art it is clear that you can also re-calculate the model immediately ("on the fly") as adding a new node from the list of materials or removing it from the system.
Integration of the list of materials and technical characteristics is key to ensuring a quick and efficient way to design effective radio communication within the allocated budget.
Although the invention is described within the boundaries of its preferred options, specialists in this area, obviously, can be carried out modification of the proposed system, the comfort of the nature and scope of the present invention described in the claims.
Thus, having described the invention as having novelty in this art, we sought a patent in the volume of the items set forth in the claims.
1. The design of three-dimensional networks, including the formation of the cutting link; selecting data representing elements for use in a communication network, which include performance and pricing data, and additionally create a list of materials, based on information of the cost of equipment or installation costs or maintenance associated with the items selected at the stage of selection of the data; the choice of location of elements in a three-dimensional model database environment; forecasting, display or storage of values of operating characteristics at one or more points in a three-dimensional model database environment; the display or storage locations of the elements in three dimensions in the three-dimensional model database environment with subsequent use of location information for designing a three-dimensional network connection.
2. The method according to p. 1, characterized in that it further includes a step of joining the elements in the three-dimensional model of the database environment.
3. The method according to p. 1 characterized in that the stage of choosing the location of elements in a three-dimensional model database environment further includes the orientation of the elements in the three-dimensional model of the database environment.
4. The method according to p. 1, characterized in that paywise fact, what stage of forming a three-dimensional model database environment includes a model of the physical environment which has been or will be implemented communications network, thus implementing the adoption of input parameters that define the physical environment in which must be arranged in the communication network; and the formation of this three-dimensional model database environment physical environment based on the input parameters.
6. The method according to p. 5, characterized in that the stage of forming a three-dimensional model of the database of the building includes the use of a variety of objects that define the environment of floors, walls, partitions, surrounding buildings, complexes of buildings or structures, landscape, trees, or other areas or obstacles; and creating a three-dimensional view of the environment, or the location of items, or both at any time.
7. The method according to p. 6, characterized in that the stage of creating includes a step of selecting a three-dimensional representation of the selected perspective.
8. The method according to p. 6, characterized in that the stage of use involves the step of adjusting the color of the walls and description of the physical and electrical parameters of partitions.
9. The method according to p. 6, wherein each object of the specified set of objects Svante attenuation color, height, surface roughness and reflectivity values.
10. The method according to p. 1, characterized in that the list of materials includes information about the cost of items or information about the cost of installation or maintenance, divided into categories for items, subsystems and the entire system.
11. The method according to p. 1, characterized in that stage of the selection carried out by selecting from a predefined list of items.
12. The method according to p. 1, characterized in that the stage of selecting includes selecting at least one category of items; range selection criteria for acceptable performance for each of the specified at least one category of system elements and the removal of one or more items from a predefined list of items that are not included in the range of acceptable performance criteria to ensure the selection of the elements that are in the range of acceptable performance criteria.
13. The method according to p. 1, characterized in that it further includes an iterative choice of alternatives at the stage of selection to update the values of the performance or list of materials based on the alternatives.
14. The method of analyzing performance of Setia three-dimensional computer model of the physical environment and one or more computer representations of network elements, which are part of or can be included in a three-dimensional model of the physical environment, and the computer representation of network elements are stored in memory or displayed in certain places a three-dimensional model of the physical environment; selecting one or more points in a three-dimensional model of the physical environment, which must be assessed values of operating characteristics; forecasting performance for one or more points.
15. The method according to p. 14, wherein the performance characteristics are displayed or stored at one or more points in the model of the physical environment.
16. The method according to p. 14, characterized in that it further includes a step of selecting one or more computer representations of network elements selected from the set of computer representations.
17. The method according to p. 14, characterized in that during the storage or display and forecasting are carried out iteratively over multiple time periods.
18. The method according to p. 14, characterized in that the stage display includes a stage of a choice of one or more computer representations of network elements from a variety of computer concepts and orientation of computer representations of the network is least some of the elements are the elements of a wireless network connection.
20. The method according to p. 14, wherein the one or more computer representations of network elements selected from a predefined list of items that you want to use in the computer representation of network elements, and the data selected in the selection phase, include the data value and performance.
21. The method according to p. 20, characterized in that it further includes a step of creating a list of materials, based on the General information about the cost or installation or maintenance associated with the items selected at the stage of selection.
22. The method according to p. 20, wherein the list of materials includes information about the cost or installation or maintenance, divided into categories for items, subsystems and the entire system.
23. The method according to p. 21, characterized in that the stage of selecting includes selecting at least one category of items; range selection criteria for acceptable performance for each of the specified at least one category of system elements and the removal of one or more items from a predefined list of items that are not included in the range of acceptable performance criteria to ensure the selection of items that are on the cancel stage iterative selection of alternatives at the stage of selection to update the specified metric performance or a specific list of materials, based on these alternatives.
25. System for designing a communication network containing a three-dimensional model database environment physical environment in which the communications network have been or will be made; means for selecting elements that must be used in communication network, from a predefined list of elements; means for creating a list of materials for the communication network based on the elements selected by the selector; means for placing items in certain places in the three-dimensional model database environment; means for display or storage locations of the elements in the three-dimensional model database environment, a means for accepting input parameters, defining the physical environment and the means for using the three-dimensional model of the database and the physical environment.
26. System on p. 25, characterized in that at least some of the elements are the elements of a wireless network connection.
27. System on p. 25, characterized in that it further comprises means for accepting input parameters that define the physical environment, and the means for using the three-dimensional model of the database and the physical environment.
28. System on p. 25, the criteria of performance for elements and means for removing one or more items from a predefined list of elements, which are not within the range of acceptable performance criteria to ensure the selection of the elements that are in the range of acceptable performance criteria.
29. System analysis communication network containing a three-dimensional model database environment the physical environment in which you created or will be created communications network; means for selecting data representing the elements used in communication network, and the corresponding location of these elements in a three-dimensional model database environment physical environment; a means to display locations of the elements in the three-dimensional model database environment physical environment; means for selecting at least one point of specific interest in the three-dimensional model of the database and the surrounding physical environment and the means to predict and display system information operating characteristics for at least one point of specific interest in the three-dimensional model of the database and the surrounding physical environment.
30. System on p. 29, characterized in that at least some of the elements are the elements of a wireless network connection.
31. System on p. 29, characterized in that it further comprises means DL is oborudovaniya, including elements.
32. The system under item 31, wherein the list of materials includes information about the cost of items or installation or maintenance of equipment, and this information is divided into categories for items, subsystems and the entire system.
33. The system under item 31, wherein the means for selecting data selects from a predefined list of items.
34. The system under item 33, wherein the means for selecting includes means for selecting at least one category of elements; means for selecting the range of acceptable performance criteria for each of the at least one category of system elements, and means for removing one or more items from a predefined list of items that are not included in the range of acceptable performance criteria to make the selection of the elements that are in the range of acceptable performance criteria.
35. System on p. 29, characterized in that it further comprises means for updating the list of materials automatically when the iterative selection of alternatives using the specified selector.
36. The system under item 29, wherein the system information about working
FIELD: computer-laser breadboarding.
SUBSTANCE: using a system for three-dimensional geometric modeling, volumetric model of product is made, separated on thin transverse layers and hard model is synthesized layer-wise, thickness A of transverse layers is picked from condition, where A≤F, where F is an allowed value for nominal profile of model surface and generatrix of model surface profile passes through middle line of transverse layers.
EFFECT: shorter time needed for manufacture of solid model.
FIELD: technology for layer-wise shape generation as part of accelerated modeling systems based on laser-computer modeling.
SUBSTANCE: in the method by means of three-dimensional geometric modeling system a volumetric model of product is formed, split onto thin transverse layers and layer-wise synthesis of solid model is performed, while transverse layers Coefficient are made of different thickness A, which is determined from appropriate mathematical formula.
EFFECT: less time required for manufacture of solid model.
FIELD: device for data acquired by shooting at many angles playback, information-carrying medium, which carries this data; machine-readable medium, which carries program code, which provides computer playback method.
SUBSTANCE: information medium contains audio-video data, separated into clips, which are recordings parts, and additional information that deals with transfer points. Playback of defined data device consists of read device and playback unit for defined data playback by searching and playing clip that corresponds to read data; every clip includes information about acquisition time and playback time. "Go to audio-video data acquired by shooting at another angle" command results in addressing the transfer point, which is the initial point of audio-video data acquired by shooting at defined angle.
EFFECT: saved data playback consistency even when angle is changed.
18 cl, 5 dwg
FIELD: navigation in three-dimensional scene on display, possible use together with computer image of three-dimensional object.
SUBSTANCE: in accordance to method, interesting point is connected to supporting form, supporting form tracks shape of observed three-dimensional object in observed three-dimensional scene, and interesting point is held within limits of observed three-dimensional object, and scene is displayed in accordance to navigation action requested by user in observed three-dimensional scene, while holding interesting point within limits of supporting form and within limits of observation area. Navigation actions in two-dimensional representation of three-dimensional object include turn, movement and dimensional scaling.
EFFECT: holding of interesting point on an object during any manipulations with this object, to keep the object in the center of window in display.
2 cl, 10 dwg
FIELD: technology for displaying three-dimensional polygon on display, wherein three-dimensional polygon, which is geometrically incomplete and therefore may not be displayed on screen by means of automatic triangulation in common three-dimensional graphics library, may be shown on screen.
SUBSTANCE: method includes operation of input of three-dimensional models for producing three-dimensional models with three-dimensional coordinates for area, subject for usage on screen, determined on basis of basic positioning coordinates, determined by positioning of vehicle; operation of reproduction of polygons, during which three-dimensional models, introduced at three-dimensional model introduction stage, are classified, in accordance to whether all vertices of polygon are on one and the same plane for three-dimensional model, and polygons are reproduced for classified models based on aforementioned coordinates of basic position, and operation of displaying of polygons on screen, reproduced in operation of reproduction of polygons on screen.
EFFECT: decreased amount of calculations in common three-dimensional graphics library, improved efficiency of processing time usage.
3 cl, 13 dwg
FIELD: technology for imitating movement of virtual jointed object in virtual space.
SUBSTANCE: method for moving virtual mannequin (10) in virtual space includes executing a series of elementary movements. Virtual mannequin (10) contains a set of jointed elements (11), interconnected by a set of joints (12). Relative positions of jointed elements (11) are determined by joint angles in accordance to degrees of freedom.
EFFECT: increased precision of imitation of mannequin movement, prevented mutual collisions of all jointed elements of mannequin by ensuring sliding of various jointed elements over one another.
13 cl, 9 dwg
FIELD: information technology, possible use for designing complex technical products.
SUBSTANCE: method includes selecting data of computer mathematical model, for usage in construction of three-dimensional geometric model of product, series of automatic construction operations is set, data selected by user is read, aforementioned data is transformed to values of geometric parameters of product, from a previously created database, three-dimensional geometric primitive models are extracted, changes of their parameters are altered in accordance with computer mathematical model data, dynamic construction is performed for elements of product which are absent in database, resulting three-dimensional geometrical models of product elements are placed into three-dimensional geometrical models of product assembly and connections are applied, which hold the position of each element of the product in assembly.
EFFECT: reduction of time and computing resources.
FIELD: technology for imitating movement of virtual jointed object in virtual space.
SUBSTANCE: in the method, distance of interaction is computed between jointed object (10) and element of environment (13), on basis of aforementioned distances, interaction of first point (P1), belonging to one of jointed elements (11) of jointed object (10), and second point (P2), belonging to element of space surrounding it (13), deviation of jointed object (10) from element (13d) of environment (13) is determined on basis of first, second points (P1, P2) of unique deviation vector (V), by means of movement, determined in accordance to single deviation vector (V) and influencing global position and/or global orientation, and/or degrees of freedom of jointed object for preventing collision of jointed object (10) with element (13d) of environment.
EFFECT: increased speed of operation.
14 cl, 11 dwg
FIELD: methods for adaptive assignment of marks to two-dimensional images of multi-dimensional objects.
SUBSTANCE: in accordance to the invention, a set of marks is computed in two-dimensional image, where a set of mark areas is distributed practically evenly across the space along the two-dimensional image. Value of data, having round number, is determined within limits of each one of mark areas, and mark point is determined which corresponds to value of data within limits of each one of marked areas. Mark point within limits of each mark area in two-dimensional image is displayed in parallel with value of data, positioned near the mark point within limits of each mark area in two-dimensional image.
EFFECT: increased efficiency.
3 cl, 6 dwg
FIELD: technology for processing images, in particular, method which can be used to amplify perception of three-dimensional depth and shape, depicted on basis of two-dimensional images, and derived virtual reality environments.
SUBSTANCE: method for processing images is claimed, which contains stages: (a) stretching the original image in direction along Y axis (vertical one) for coefficient within range of 2-10%; selection of point of attachment and reordering of image during centering of reordering operation around the attachment point; and rotation of image for an angle within 3-9° interval, preferably clockwise; (b) stretching the copy of original image in direction along X axis (horizontal one) for coefficient within range of 2-10%; and selection of area of image around selected point of attachment; and (c) connection of selected area of image formed at stage (b) to the image formed at stage (a).
EFFECT: creation of method for processing images with improved trustworthiness.
2 cl, 12 dwg