CN117812605A - Method and device for reducing network coverage blind area - Google Patents
Method and device for reducing network coverage blind area Download PDFInfo
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Abstract
The invention discloses a method and a device for reducing network coverage blind areas, wherein the method comprises the steps that a server identifies network coverage blind areas in a target area by utilizing a network coverage blind area discovery algorithm; based on the network coverage blind area, a blind compensation signal is sent to the digital micro-relay device, so that the digital micro-relay device performs blind compensation on the network coverage blind area in the target area based on the outdoor wireless network signal; based on the range of the target coverage area, the power of the transmitting port of the digital micro-relay device is adjusted, the network coverage of the target area is identified by adopting a network coverage blind area discovery algorithm, the digital relay device is adopted to carry out blind supplement on each network coverage blind area in a point-to-point mode, construction in a residential area is not needed, the radiation level of the digital relay device is very low, the outdoor wireless signal can be received, the received signal is processed, and the coverage problem can be effectively improved.
Description
Technical Field
The application relates to the technical field of communication, in particular to a method and a device for reducing network coverage blind areas.
Background
In areas where residential areas are concentrated, because it is difficult to perform station arrangement or add wireless amplification equipment in residential areas, coverage blind spots such as weak signals in the residential areas and even failure of communication in most areas of the house are more likely to occur, and the blind spots are characterized by being scattered, and are not particularly suitable for using outdoor macro stations or outdoor wireless amplification equipment to perfect wireless coverage of each household except human factors. With the construction of more and more high-rise residential areas and more large parking lots located underground, this problem has been in need of solution.
Existing ways of enhancing wireless coverage are virtually incapable of addressing coverage blind spots inside high floors in a complete residential area, primarily because these blind spots are relatively diffuse. In addition, in either the case of adding a site or adding a wireless repeater, or in the case of installing a repeater or a microcell camouflaged as a street lamp, a tree pile, or the like, construction is required in a residential area, and a resident in the vicinity of the site or repeater is greatly affected, and thus various resistances are exerted. It is virtually impossible to install equipment in a residential area. Moreover, even if it can be constructed, it is not very thorough to address the wireless network coverage of different floor households, and many blind spots will continue to exist.
Disclosure of Invention
The application provides a method, a device, electronic equipment and a system for reducing network coverage blind areas, so as to reduce the network coverage blind areas. To achieve the above object, the present application provides the following solutions:
in a first aspect, the present application provides a method for reducing network coverage blind areas, the method including the steps of: identifying a network coverage blind area in the target area by using a network coverage blind area discovery algorithm; based on the network coverage blind area, sending a blind-supplement signal to the digital micro-relay device, so that the digital micro-relay device performs blind-supplement on the network coverage blind area in the target area based on an outdoor wireless network signal; and adjusting the transmitting port power of the digital micro relay device based on the range of the target coverage area.
Further, the identifying the network coverage blind area in the target area by using the network coverage blind area discovery algorithm includes the following steps: a plurality of sensing nodes are uniformly arranged in the target area respectively; acquiring a first node set based on a first-hop neighbor node and a second-hop neighbor node of a target sensor node; selecting sensing nodes with the ordinate larger than a first preset value from the first node set, and generating a second node set; selecting any two different second sensing nodes and any two different third sensing nodes from the second node set, and calculating the circumscribed circle center coordinates and the circumscribed circle radius of a triangle formed by the target sensing node, the second sensing node and the third sensing node; acquiring the triangle type based on the circumscribed circle center coordinates and the circumscribed circle radius; and identifying network coverage blind areas in the target area based on the triangle types.
Further, the identifying a network coverage blind area in the target area based on the triangle type includes the following steps: if the triangle is an acute triangle or a right triangle and the radius of the circumcircle is smaller than or equal to the sensing radius, the coverage blind area is not shown in the preset field of the target sensing node; and if the triangle is an acute triangle or a right triangle and the radius of the circumcircle is larger than the sensing radius, indicating that a coverage blind area exists in the preset field of the target sensing node.
Further, the identifying a network coverage blind area in the target area based on the triangle type includes the following steps: if the triangle is an obtuse triangle and the radius of the circumcircle is smaller than or equal to the sensing radius, indicating that a coverage blind area does not exist in the preset field of the target sensing node; and if the triangle is an obtuse triangle and the radius of the circumscribed circle is larger than the sensing radius, checking whether the circumscribed circle center coordinate is covered by other sensor nodes in the first node set.
Further, if the triangle is an obtuse triangle and the radius of the circumcircle is larger than the perceived radius, checking whether the circumcircle center coordinate is covered by the rest sensor nodes in the first node set, and then comprising the following steps: if the position of the circumscribed circle center coordinate is covered by other sensor nodes in the first node set, the condition that a coverage blind area does not exist in the preset field of the target sensor node is indicated; and if the position of the circumscribed circle center coordinate is not covered by other sensor nodes in the first node set, indicating that a coverage blind area exists in the preset field of the target sensor node.
Further, the method comprises the following steps: the second sensing node is proposed from the second node set, and an updated second node set is obtained; selecting any two different third sensing nodes and fourth sensing nodes from the updated second node set, and calculating updated circumscribed circle center coordinates and updated circumscribed circle radius of a triangle formed by the target sensing node, the second sensing node and the third sensing node; acquiring the triangle type based on the updated circumscribed circle center coordinates and the updated circumscribed circle radius; and identifying network coverage blind areas in the target area based on the triangle types. Repeating the steps until the second node set is an empty set.
Further, the digital micro-relay device performs blind supplement on a network coverage blind area in a target area based on an outdoor wireless network signal, and the method comprises the following steps: the receiving antenna of the digital relay equipment receives an uplink signal from the terminal, filters the uplink signal through a duplexer, then enters the first radio frequency receiving and transmitting unit, the received signal is amplified, converted in frequency in the first radio frequency receiving and transmitting unit, the received signal is directly connected with the DAC of the second radio frequency receiving and transmitting unit in a data direct connection mode after A/D conversion processing to transfer data, the received signal is converted into an analog signal after DAC, converted into a power amplifier, and then the power amplifier is transmitted to the terminal through the antenna.
In a second aspect, the present application provides an apparatus for mitigating network coverage hole, the apparatus comprising: the blind area identification module is used for identifying network coverage blind areas in the target area by utilizing a network coverage blind area discovery algorithm; the blind compensation module is used for sending a blind compensation signal to the digital micro-relay device based on the network coverage blind area so that the digital micro-relay device performs blind compensation on the network coverage blind area in the target area based on an outdoor wireless network signal; and the power adjustment module is used for adjusting the power of the transmitting port of the digital micro-relay device based on the range of the target coverage area.
The beneficial effects that technical scheme that this application provided brought include: the server identifies a network coverage blind area in a target area by using a network coverage blind area discovery algorithm; based on the network coverage blind area, a blind compensation signal is sent to the digital micro-relay device, so that the digital micro-relay device performs blind compensation on the network coverage blind area in the target area based on the outdoor wireless network signal; based on the range of the target coverage area, the power of the transmitting port of the digital micro-relay device is adjusted, the network coverage of the target area is identified by adopting a network coverage blind area discovery algorithm, the digital relay device is adopted to carry out blind supplement on each network coverage blind area in a point-to-point mode, construction in a residential area is not needed, the radiation level of the digital relay device is very low, the outdoor wireless signal can be received, the received signal is processed, and the coverage problem can be effectively improved.
Drawings
Fig. 1 is a flow chart of a method for mitigating network coverage hole of the present invention.
Fig. 2 is a flow chart of a method for mitigating network coverage hole in another application implementation.
Detailed Description
In order to achieve the technical effects, the general idea of the application is as follows:
it should be noted that, the random deployment of the sensor nodes is uneven or the energy is exhausted, which may cause coverage blind areas of the Wireless Sensor Networks (WSNs). Assuming that the sensor nodes are isomorphic, namely that each sensor node has the same computing capacity, communication capacity and initial energy and is time-synchronous, the sensor nodes can acquire own position information and have unique ID numbers, and the communication radius of each sensor node is twice the sensing radius; the sensor node adopts a disc Boolean coverage model, namely the sensing range of the node is a circle with the node as a circle center and the sensing radius as a radius.
Referring to fig. 1, a method for reducing network coverage blind area includes the following steps:
aiming at the problem of coverage blind areas in WSNs, a network coverage blind area discovery algorithm based on geometric figures is provided. When the sensor node and two neighboring sensor nodes form an acute triangle or a right triangle, and the radius of the circumscribed circle of the triangle is smaller than the perceived radius, the sensor node is indicated to have no coverage blind area nearby; otherwise, when the radius of the circumscribed circle of the triangle is larger than the perceived radius, the coverage blind area is indicated to exist near the sensor node.
Specifically, the sensor nodes and two neighboring sensor nodes form an acute triangle, the circle center Z of the circumcircle is positioned in the acute triangle, and when the radius of the circumcircle is smaller than the sensing radius, the circle center Z of the circumcircle is covered by the nodes, so that a common sensing area exists, and a coverage blind area does not exist among the three sensor nodes; the sensor nodes and two neighboring sensor nodes form an acute triangle, and when the radius of an external circle is smaller than the radius of the external circle, a common sensing area is necessarily reserved among 3 nodes, and a coverage blind area is not reserved; when the radius R > R of the circumscribing circle is not common between the 3 nodes, the center Z of the circumscribing circle of the sensing area is necessarily out of the coverage range of the 3 sensor nodes, and a coverage blind area exists. The method for proving acute triangle formed by the node, one 1-hop neighbor node and one 2-hop neighbor node is similar to the second case.
S1, identifying a network coverage blind area in a target area by using a network coverage blind area discovery algorithm;
specifically, the basic idea of the network coverage blind area discovery algorithm is to form a triangle by using a target sensor node and two neighbor nodes of the target sensor node, calculate the radius and circle center of the circumscribed circle of the triangle, and judge whether coverage blind areas exist near the target sensor node according to the related theory of geometry.
Specifically, the controller uniformly sets a plurality of sensing nodes in the target area respectively; acquiring a first node set based on a first-hop neighbor node and a second-hop neighbor node of a target sensor node;
selecting a sensing node with an ordinate larger than a first preset value from the first node set, and generating a second node set; selecting any two different second sensing nodes and any two different third sensing nodes from the second node set, and calculating the circumscribed circle center coordinates and the circumscribed circle radius of a triangle formed by the target sensing node, the second sensing node and the third sensing node; acquiring a triangle type based on the circumscribed circle center coordinates and the circumscribed circle radius; based on the triangle type, network coverage dead zones in the target area are identified.
S2, based on the network coverage blind area, a blind compensation signal is sent to the digital micro-relay device, so that the digital relay device performs blind compensation on the network coverage blind area in the target area based on the outdoor wireless network signal;
the digital relay device comprises a receiving antenna, a duplexer, a first radio frequency receiving and transmitting unit, a second radio frequency receiving and transmitting unit and a transmitting antenna.
After the receiving antenna of the digital relay equipment receives an uplink signal from a terminal, the uplink signal is filtered by a duplexer and then enters a first radio frequency receiving and transmitting unit, in the first radio frequency receiving and transmitting unit, the uplink signal is amplified, converted into frequency, converted into analog signal by the DAC, and then sent to a power amplifier by a transmitting antenna after being converted into frequency, and then sent to the terminal by the transmitting antenna after being converted into frequency.
S3, adjusting the power of a transmitting port of the digital micro relay device based on the range of the target coverage area.
Based on the step S2, acquiring the area of a target area, and adjusting the port power of a transmitting antenna of the digital relay equipment according to the area of the target area, namely, the larger the area of the target area is, the larger the port power of the transmitting antenna is; the smaller the area of the target area, the smaller the port power of the transmitting antenna.
The server identifies a network coverage blind area in a target area by using a network coverage blind area discovery algorithm; based on the network coverage blind area, a blind compensation signal is sent to the digital micro-relay device, so that the digital micro-relay device performs blind compensation on the network coverage blind area in the target area based on the outdoor wireless network signal; based on the range of the target coverage area, the power of the transmitting port of the digital micro-relay device is adjusted, the network coverage of the target area is identified by adopting a network coverage blind area discovery algorithm, the digital relay device is adopted to carry out blind supplement on each network coverage blind area in a point-to-point mode, construction in a residential area is not needed, the radiation level of the digital relay device is very low, the outdoor wireless signal can be received, the received signal is processed, and the coverage problem can be effectively improved.
In one embodiment, as shown in fig. 2, step S2 includes:
s201, uniformly arranging a plurality of sensing nodes in a target area respectively;
s202, acquiring a first node set based on a first-hop neighbor node and a second-hop neighbor node of a target sensor node;
s203, selecting a sensing node with an ordinate larger than a first preset value from the first node set to generate a second node set;
s204, selecting any two different second sensing nodes and any two different third sensing nodes from the second node set, and calculating the circumscribed circle center coordinates and the circumscribed circle radius of a triangle formed by the target sensing node, the second sensing nodes and the third sensing nodes;
s205, acquiring a triangle type based on the circumscribed circle center coordinates and the circumscribed circle radius;
s206, identifying network coverage blind areas in the target area based on the triangle types.
If the triangle is an acute triangle or a right triangle and the radius of the circumcircle is smaller than or equal to the sensing radius, the coverage blind area is not existed in the preset field of the target sensing node; if the triangle is an acute triangle or a right triangle and the radius of the circumscribing circle is larger than the sensing radius, the coverage blind area exists in the preset field of the target sensing node;
if the triangle is an obtuse triangle and the radius of the circumscribing circle is smaller than or equal to the sensing radius, the coverage blind area is not existed in the preset field of the target sensing node; if the triangle is an obtuse triangle and the radius of the circumscribed circle is larger than the perceived radius, checking whether the circumscribed circle center coordinate is covered by other sensor nodes in the first node set;
if the triangle is an obtuse triangle and the radius of the circumscribed circle is larger than the perceived radius, checking whether the circumscribed circle center coordinate is covered by other sensor nodes in the first node set, comprising the following steps: if the position of the circumscribed circle center coordinate is covered by other sensor nodes in the first node set, the condition that a coverage blind area does not exist in the preset field of the target sensor node is indicated; and if the position of the circumscribed circle center coordinate is not covered by other sensor nodes in the first node set, indicating that a coverage blind area exists in the preset field of the target sensor node.
In this embodiment, a network coverage blind area in the target area is identified by using a network coverage blind area discovery algorithm, and the accuracy of detecting the network coverage blind area by the algorithm is higher, and the energy consumption of the sensor node is smaller.
In an embodiment, the extended access control system includes a second access control camera, a second controller, a face information cloud database, and a second execution device; wherein the second controller performs the steps of: acquiring face information of a user underground by using a coal mine by using a second access control camera; comparing the face information with the face information cloud database to obtain a second comparison result; and turning on or off the second execution device based on the second comparison result.
Specifically, the main controller extracts feature information in face information of underground coal mine users, calculates the correlation degree between the feature information and the feature information in a face information cloud database, and when the correlation degree exceeds a preset threshold value, determines that a second comparison result is authentication passing; otherwise, the second comparison result is determined to be authentication failure. When the second comparison result is that the authentication is passed, the main controller sends an opening instruction to the second execution device; and when the second comparison result is that the authentication fails, the main controller sends a closing instruction to the second execution device.
In an embodiment of the application, a communication gateway is arranged between a standard access control system and an extended access control system.
In the embodiment of the application, the underground access control system uses an IP section of 192.168.10.1; the on-well access control system uses the IP section as 192.168.3.1, so that the standard access control system and the expansion access control system are not in the same network section, IP intercommunication is needed, and a communication gateway can be arranged between the standard access control system and the expansion access control system.
One method of setting up a communication gateway is to establish a gateway on a three-layer switch; the gateways are all on the same three-layer switch, the device can default to establish a route, and different network segment devices can communicate; in order to conveniently obtain the address, DHCP servers of different network segments can be established on the three-layer switch; the other is that the router uses the mode of the sub-interface to realize different address segment communication; in different subinterfaces, different network segment gateway addresses and different routers are set, and the number of the supported subinterfaces is different, but the subinterfaces which want to be divided are enough. In both the three-layer switch and the router, the default established route can be checked through a "show IP route" command, and the IP address is obtained through the router or the DHCP server of the switch. Thereby enabling devices of different network segments to communicate with each other.
In this embodiment of the application, through setting up communication gateway between standard access control system and expansion access control system for the equipment of different network segments can carry out intercommunication, fuses the access control ware of the different entrances in pit down, when standard access control system breaks down, can switch fast to carry out real-time supervision and remote control in the expansion management system, realizes access control system uninterrupted operation.
It should be noted that, step numbers of each step in the embodiments of the present application do not limit the order of each operation in the technical solution of the present application.
In a second aspect, a system for alleviating network coverage blind areas is provided, and comprises a standard access control system, an extended access control system, a main controller and a face information cloud database; and the standard access control system is connected with the expansion access control system through a gateway, and when the main controller receives an operation error signal reported by the standard access control system, a setting switching request is sent to the standard access control system so that the standard access control system sends a system switching instruction to the expansion access control system.
It should be noted that, the device for alleviating network coverage blind area provided in the embodiment of the present application has technical problems, technical means and technical effects corresponding to the device, and is similar to the principle of the method for alleviating network coverage blind area from the principle level.
In a second aspect, embodiments of the present application provide a storage medium having stored thereon a computer program which, when executed by a processor, implements the method for mitigating network coverage hole mentioned in the first aspect.
In a third aspect, an embodiment of the present application provides an electronic device, including a memory and a processor, where the memory stores a computer program running on the processor, and the processor implements the method for reducing network coverage holes mentioned in the first aspect when the processor executes the computer program.
It should be noted that in this application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for mitigating network coverage hole, the method comprising the steps of:
identifying a network coverage blind area in the target area by using a network coverage blind area discovery algorithm;
based on the network coverage blind area, sending a blind-supplement signal to the digital micro-relay device, so that the digital relay device performs blind-supplement on the network coverage blind area in the target area based on an outdoor wireless network signal;
and adjusting the power of a transmitting port of the digital micro relay device based on the range of the target area.
2. The method for reducing network coverage hole as set forth in claim 1, wherein the identifying the network coverage hole in the target area using the network coverage hole discovery algorithm comprises the steps of:
a plurality of sensing nodes are uniformly arranged in the target area respectively;
acquiring a first node set based on a first-hop neighbor node and a second-hop neighbor node of a target sensor node;
selecting sensing nodes with the ordinate larger than a first preset value from the first node set, and generating a second node set;
selecting any two different second sensing nodes and any two different third sensing nodes from the second node set, and calculating the circumscribed circle center coordinates and the circumscribed circle radius of a triangle formed by the target sensing node, the second sensing node and the third sensing node;
acquiring the triangle type based on the circumscribed circle center coordinates and the circumscribed circle radius;
and identifying network coverage blind areas in the target area based on the triangle types.
3. The method for reducing network coverage hole as set forth in claim 2, wherein the identifying the network coverage hole in the target area based on the triangle type comprises the steps of:
if the triangle is an acute triangle or a right triangle and the radius of the circumcircle is smaller than or equal to the sensing radius, the coverage blind area is not shown in the preset field of the target sensing node;
and if the triangle is an acute triangle or a right triangle and the radius of the circumcircle is larger than the sensing radius, indicating that a coverage blind area exists in the preset field of the target sensing node.
4. The method for reducing network coverage hole as set forth in claim 2, wherein the identifying the network coverage hole in the target area based on the triangle type comprises the steps of:
if the triangle is an obtuse triangle and the radius of the circumcircle is smaller than or equal to the sensing radius, indicating that a coverage blind area does not exist in the preset field of the target sensing node;
and if the triangle is an obtuse triangle and the radius of the circumscribed circle is larger than the sensing radius, checking whether the circumscribed circle center coordinate is covered by other sensor nodes in the first node set.
5. The method for reducing network coverage hole as set forth in claim 4, wherein if the triangle is an obtuse triangle and the circumscribing circle radius is greater than a perceived radius, checking whether the circumscribing circle center coordinate is covered by the rest of the sensor nodes in the first node set, and then comprising the steps of:
if the position of the circumscribed circle center coordinate is covered by other sensor nodes in the first node set, the condition that a coverage blind area does not exist in the preset field of the target sensor node is indicated;
and if the position of the circumscribed circle center coordinate is not covered by other sensor nodes in the first node set, indicating that a coverage blind area exists in the preset field of the target sensor node.
6. The method for mitigating network coverage hole of claim 2, wherein the method further comprises the steps of:
the second sensing node is proposed from the second node set, and an updated second node set is obtained;
selecting any two different third sensing nodes and fourth sensing nodes from the updated second node set, and calculating updated circumscribed circle center coordinates and updated circumscribed circle radius of a triangle formed by the target sensing node, the second sensing node and the third sensing node;
acquiring the triangle type based on the updated circumscribed circle center coordinates and the updated circumscribed circle radius;
based on the triangle type, identifying a network coverage blind area in a target area;
repeating the steps until the second node set is an empty set.
7. The method for reducing network coverage hole as set forth in claim 2, wherein the digital micro relay device blindly supplements the network coverage hole in the target area based on the outdoor wireless network signal, comprising the steps of:
the receiving antenna of the digital relay equipment receives an uplink signal from the terminal, filters the uplink signal through a duplexer, then enters the first radio frequency receiving and transmitting unit, the received signal is amplified, converted in frequency in the first radio frequency receiving and transmitting unit, the received signal is directly connected with the DAC of the second radio frequency receiving and transmitting unit in a data direct connection mode after A/D conversion processing to transfer data, the received signal is converted into an analog signal after DAC, converted into a power amplifier, and then the power amplifier is transmitted to the terminal through the antenna.
8. An apparatus for mitigating network coverage hole, the apparatus comprising:
the blind area identification module is used for identifying network coverage blind areas in the target area by utilizing a network coverage blind area discovery algorithm;
the blind compensation module is used for sending a blind compensation signal to the digital micro-relay device based on the network coverage blind area so that the digital micro-relay device performs blind compensation on the network coverage blind area in the target area based on an outdoor wireless network signal;
and the power adjustment module is used for adjusting the power of the transmitting port of the digital micro-relay device based on the range of the target coverage area.
9. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the method according to any of claims 1 to 7 when executing the computer program.
10. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the method according to any one of claims 1 to 7.
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