CN107396287B - Method and device for selecting working frequency points - Google Patents
Method and device for selecting working frequency points Download PDFInfo
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- CN107396287B CN107396287B CN201710573573.7A CN201710573573A CN107396287B CN 107396287 B CN107396287 B CN 107396287B CN 201710573573 A CN201710573573 A CN 201710573573A CN 107396287 B CN107396287 B CN 107396287B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
Abstract
The invention discloses a method for selecting working frequency points, which comprises the following steps: detecting N working frequency points corresponding to N access points in an environment and N signal intensities corresponding to the N access points, wherein N is an integer greater than 1; acquiring the number of the terminals of the Internet of things borne by each access point in the N access points; and selecting target working frequency points for target access points according to the N working frequency points, the N signal strengths and the number of the terminals of the Internet of things borne by each access point, wherein the N access points do not comprise the target access points. The embodiment of the invention also provides a device for selecting the working frequency point. The embodiment of the invention can improve the anti-interference capability and the communication reliability.
Description
Technical Field
The invention relates to the technical field of Internet of things, in particular to a method and a device for selecting working frequency points.
Background
The Internet of things is an important component of a new generation of information technology and is also an important development stage of the 'informatization' era. Its english name is: "Internet of things (IoT)". The internet of things is widely applied to network fusion through communication perception technologies such as intelligent perception, identification technology and pervasive computing, and is also called as the third wave of development of the world information industry after computers and the internet. The internet of things is an application expansion of the internet, and is not a network, but a business and an application. Therefore, the application innovation is the core of the development of the internet of things, and the innovation 2.0 taking the user experience as the core is the soul of the development of the internet of things.
The terminal access of the internet of things generally adopts a wireless communication technology. The existing wireless communication technologies, such as WIFI, bluetooth and the like, generally have the problems of poor anti-interference capability, low communication reliability and the like, and cannot meet the requirement of the service quality of the internet of things.
Disclosure of Invention
The embodiment of the invention provides a method and a device for selecting working frequency points, aiming at improving the anti-interference capability and the communication reliability.
In a first aspect, an embodiment of the present invention provides a method for selecting a working frequency point, where the method and apparatus for selecting a working frequency point include a gateway/access point, including: the gateway/access point detects N working frequency points corresponding to N access points in an environment and N signal intensities corresponding to the N access points, wherein N is an integer greater than 1; the gateway/access point acquires the number of the terminals of the Internet of things borne by each access point in the N access points; and the gateway/access point selects a target working frequency point for a target access point according to the N working frequency points, the N signal strengths and the number of the terminals of the Internet of things borne by each access point, wherein the N access points do not comprise the target access point. Therefore, different working frequency points are adopted for communication, the channel monopolization of each access point communication time interval in the same space range is guaranteed, and the anti-interference capability and the communication reliability are improved.
In some possible embodiments, the specific implementation manner that the gateway/access point selects the target working frequency point for the target access point according to the N working frequency points, the N signal strengths, and the number of the internet of things terminals carried by each access point is as follows: the gateway/access point sequences the N working frequency points according to the N signal intensities and the number of the Internet of things terminals borne by each access point to obtain an anti-interference list; and the gateway/access point selects a target working frequency point for a target access point according to the anti-interference list.
In some possible embodiments, after the gateway/access point selects a target working frequency point for a target access point according to the N working frequency points, the N signal strengths, and the number of terminals of the internet of things carried by each access point, the method further includes: and the gateway/access point broadcasts the target working frequency point to the terminal carried by the target access point through a preset registration frequency point and allocates time slots for the terminal carried by the target access point.
In some possible embodiments, after the gateway/access point allocates a time slot for the terminal carried by the target access point, the method further includes: the gateway/access point receives an important data transmission request sent by an Internet of things terminal i borne by the target access point, wherein the important data transmission request carries the importance degree of data to be transmitted and the size of the data to be transmitted; and the gateway/access point reallocates the time slot for the terminal i of the Internet of things according to the importance degree of the data to be transmitted and the size of the data to be transmitted.
In some possible embodiments, after the gateway/access point allocates a time slot for the terminal carried by the target access point, the method further includes: the gateway/access point receives a flow control request sent by an internet of things terminal i borne by the target access point, the flow control request carries the important priority of the internet of things terminal i, and the gateway/access point reallocates time slots for the internet of things terminal i according to time resources in the target working frequency point and the important priority of the internet of things terminal i.
In some possible embodiments, the detecting, by the gateway/access point, N working frequency points corresponding to N access points in an environment includes: and when the interference intensity of the wireless interference signal to the working frequency point of the target access point is detected to be greater than a preset threshold value, the gateway/access point detects N working frequency points corresponding to N access points in the environment.
In some possible embodiments, before the gateway/ap detects N working frequency points corresponding to N aps in the environment, the method further includes:
the gateway/access point acquires the important priority of the target access point;
the gateway/access point determines whether the important priority of the target access point is a preset important priority or not;
if the important priority of the target access point is a preset important priority, the gateway/access point selects a working frequency point for the target access point from a reserved working frequency band, wherein the reserved working frequency band is a working frequency band reserved specially for processing special events;
and if the important priority of the target access point is not the preset important priority, the gateway/access point detects N working frequency points corresponding to N access points in the environment.
In some possible embodiments, the N working frequency points are not located in the reserved working frequency band, and the interference degree of the reserved working frequency band is lower than the interference degree of the N working frequency points. Therefore, when the target access point is important, the frequency points in the reserved working frequency band are selected for working, and the anti-interference capability and the communication reliability can be further improved.
In a second aspect, an embodiment of the present invention provides a device for selecting a working frequency point, including:
the system comprises a detection module, a detection module and a processing module, wherein the detection module is used for detecting N working frequency points corresponding to N access points in an environment and N signal intensities corresponding to the N access points, and N is an integer greater than 1;
the information acquisition module is used for acquiring the number of the terminals of the Internet of things borne by each access point in the N access points;
and the frequency point selection module is used for selecting target working frequency points for the target access points according to the N working frequency points, the N signal intensities and the number of the terminals of the Internet of things borne by each access point, wherein the N access points do not comprise the target access points.
In some possible embodiments, the detecting module is configured to detect N working frequency points corresponding to N access points in an environment and N signal strengths corresponding to the N access points, where N is an integer greater than 1;
the information acquisition module is used for acquiring the number of the terminals of the Internet of things borne by each access point in the N access points;
and the frequency point selection module is used for selecting target working frequency points for the target access points according to the N working frequency points, the N signal intensities and the number of the terminals of the Internet of things borne by each access point, wherein the N access points do not comprise the target access points.
In some possible embodiments, the apparatus further comprises:
the broadcasting module is used for broadcasting the target working frequency point to a terminal carried by the target access point through a preset registration frequency point;
and the time slot allocation module is used for allocating time slots for the terminals carried by the target access point.
In some possible embodiments, the apparatus further comprises:
the receiving module is used for receiving an important data transmission request sent by an Internet of things terminal i borne by the target access point, wherein the important data transmission request carries the importance degree of data to be transmitted and the size of the data to be transmitted;
and the time slot allocation module is further used for reallocating the time slot for the terminal i of the internet of things according to the importance degree of the data to be transmitted and the size of the data to be transmitted.
In some possible embodiments, the detection module is specifically configured to:
and when the interference intensity of the wireless interference signal to the working frequency point of the target access point is detected to be greater than a preset threshold value, detecting N working frequency points corresponding to N access points in the environment.
In a third aspect, the present invention provides a device for selecting a working frequency point, where the device for selecting a working frequency point includes a processor, and the processor is configured to support the device for selecting a working frequency point to execute a corresponding function in the method for selecting a working frequency point provided in the first aspect. The device for selecting the working frequency point may further include a memory, coupled to the processor, for storing program instructions and data necessary for the device for selecting the working frequency point. The selection device of the working frequency point can also comprise a communication interface, and the selection device of the working frequency point is used for communicating with other equipment or a communication network.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program enables a computer to perform some or all of the steps described in the first aspect of the embodiment of the present invention, and the computer includes a device for selecting a working frequency point.
In a fifth aspect, the present invention provides a computer program product, wherein the computer program product comprises a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform some or all of the steps described in the first aspect of the present invention. The computer program product can be a software installation package, and the computer comprises a selection device of the working frequency point.
Compared with the prior art, the scheme provided by the invention can consider the working frequency points corresponding to other access points in the environment, the signal intensity corresponding to other access points and the number of the terminals of the internet of things borne by each access point of other access points when the working frequency point is selected for a certain access point, so that the channel monopolization of each access point in the communication time period in the same space range can be ensured, and the anti-interference capability and the communication reliability are further improved.
These and other aspects of the invention are apparent from and will be elucidated with reference to the embodiments described hereinafter.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a network architecture of the internet of things according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method for selecting a working frequency point according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating selection of a working frequency point for a target access point according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of a method for selecting a working frequency point according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a device for selecting a working frequency point according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a device for selecting a working frequency point according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following are detailed below.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of the invention and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Hereinafter, some terms in the present application are explained to facilitate understanding by those skilled in the art.
1) The terminal of the Internet of things is a device which is connected with a sensing network layer and a transmission network layer in the Internet of things and used for acquiring data and sending the data to the network layer. It is responsible for data acquisition, preliminary processing, encryption, transmission and other functions. For example, the internet of things terminal may be a handheld device, a vehicle-mounted device, a mobile phone, a tablet computer, a notebook computer, a handheld computer, a Mobile Internet Device (MID), a wearable device, such as a smart watch, a smart band, a pedometer, and the like, which have a wireless connection function, and of course, the internet of things terminal may also include other devices with a networking function, such as a smart television, a smart air conditioner, a smart water bottle, or some smart devices of the internet of things, and the like.
2) The repeater has the following English name: "repeater (rp)", is a connected device that operates on the physical layer. The method is suitable for interconnection of two types of networks which are identical, and the main function is to enlarge the transmission distance of the networks by retransmitting or forwarding data signals.
3) Gateway, the english name is: gateway is also called Gateway, or protocol converter. The gateway realizes network interconnection above a network layer, is the most complex network interconnection equipment and is only used for interconnection of two networks with different high-level protocols. The gateway can be used for interconnection of both wide area networks and local area networks. A gateway is a computer system or device that acts as a switch-operative. The gateway is a translator used between two systems that differ in communication protocol, data format or language, or even in an entirely different architecture. Instead of the bridge simply communicating the information, the gateway repackages the received information to accommodate the needs of the destination system.
4) The Access Point (AP) is intelligent information receiving and sending equipment integrating a wireless network access point and an RFID access point, and the AP of the internet of things can simultaneously receive and send WIFI signals and RFID signals.
5) "plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
Embodiments of the present application are described below with reference to the drawings.
According to one aspect of the invention, a method for selecting working frequency points is provided. The method is applied to an internet of things architecture shown in fig. 1, and as shown in fig. 1, the internet of things architecture includes: the terminal comprises a gateway 10, a plurality of access points 20, an internet of things terminal 30 and a repeater 40 which are connected with the access points 20, and an internet of things terminal 50 which is connected with the repeater 40. The terminal 50 of the internet of things is connected with the repeater 40 in a wireless manner, the repeater 40 and the terminal 30 of the internet of things are connected with the access point 20 in a wireless manner, and the access point 20 accesses the internet with the gateway 10 in a wireless manner or a wired manner, wherein the wireless manner includes but is not limited to: bluetooth, WIFI, ZigBee, GPRS, 3G, 4G, Wimax and the like. Fig. 1 is a wired example, and for convenience of representation, only one solid line is shown here.
Referring to fig. 2, fig. 2 is a schematic flow chart of a method for selecting a working frequency point according to an embodiment of the present invention, where an execution main body for executing the method for selecting a working frequency point may be a gateway or an access point, and the following description takes the execution main body as the gateway as an example, and includes the following steps:
s201, a gateway detects N working frequency points corresponding to N access points in an environment and N signal intensities corresponding to the N access points, wherein N is an integer greater than 1.
S202, the gateway obtains the number of the terminals of the Internet of things borne by each access point of the N access points.
S203, the gateway selects a target working frequency point for a target access point according to the N working frequency points, the N signal strengths and the number of the terminals of the Internet of things borne by each access point, wherein the N access points do not comprise the target access point.
Optionally, the N working frequency points and the target working frequency point are between 100MHz and 1 GHz.
Optionally, the specific implementation manner of the gateway selecting the target working frequency point for the target access point according to the N working frequency points, the N signal strengths, and the number of the internet of things terminals carried by each access point is as follows: the network sorts the N working frequency points according to the N signal intensities and the number of the Internet of things terminals borne by each access point to obtain an anti-interference list; and the gateway selects a target working frequency point for a target access point according to the anti-interference list.
For example, suppose that N is 4, 4 access points include a first access point, a second access point, a third access point, and a fourth access point, and 4 working frequency points corresponding to the 4 access points include: 200MHz, the second work frequency point 300MHz, the third work frequency point 350MHz and the fourth work frequency point 450MHz are frequently in first work, and the signal intensity that these 4 work frequency point correspond has: 100db, 50db, 30db, 20db, the number of the internet of things terminals borne by the 4 access points is as follows: 200. 155, 133, and 50, generally, the larger the signal strength is, the larger the interference to the nearby working frequency points is, the larger the number of the terminals of the internet of things carried by the access point is, the larger the interference to the nearby working frequency points is, and thus, after the 4 working frequency points are sorted, the obtained anti-interference list is shown in table 1. The gateway selects a target working frequency point for the target access point according to table 1, for example, the number of the internet of things terminals borne by the fourth access point is relatively small, and the signal strength is relatively weak, and the gateway can select a working frequency point near the working frequency point 450MHz as the target working frequency point of the target access point, for example, 460MHz is selected as the target working frequency point.
TABLE 1
| Serial number | Access point | Working frequency point | Signal strength | Number of loaded terminals of internet of things |
| 1 | First access point | 200MHz | 100db | 200 |
| 2 | Second access point | 300MHz | 50db | 155 |
| 3 | Third access point | 350MHz | 30db | 133 |
| 4 | Fourth access point | 450MHz | 20db | 50 |
Optionally, after the gateway selects a target working frequency point for a target access point according to the N working frequency points, the N signal strengths, and the number of terminals of the internet of things carried by each access point, the method further includes: and the gateway broadcasts the target working frequency point to the terminal carried by the target access point through a preset registration frequency point and allocates a time slot for the terminal carried by the target access point.
The preset registration frequency points are a plurality of fixed frequency points which are preset specially for registration, and the specific number of the preset registration frequency points can be preset according to actual needs, which is not limited in the invention. The N working frequency points and the target working frequency point are not the plurality of fixed frequency points. After the gateway selects a target working frequency point for a target access point, the target working frequency point is sent to the target access point through a registration frequency point, and then the target access point sends the target working frequency point to all the internet of things terminals connected with the target access point through the registration frequency point, so that the working frequency points of all the internet of things terminals connected with the target access point are kept consistent with the working frequency points of the target access point, and automatic networking is successful. After the internet of things terminals working on the same frequency point form a network, the gateway broadcasts and releases a clock and distributes time slots through a time division multiplexing algorithm, and after each internet of things terminal receives the time slots distributed by the gateway, each internet of things terminal transmits or receives data according to the distributed time slots.
Optionally, after the gateway allocates a timeslot for the terminal carried by the target access point, the method further includes: the gateway receives an important data transmission request sent by an Internet of things terminal i borne by the target access point, wherein the important data transmission request carries the importance degree of data to be transmitted and the size of the data to be transmitted; and the gateway reallocates the time slot for the terminal i of the Internet of things according to the importance degree of the data to be transmitted and the size of the data to be transmitted.
Wherein sometimes, the terminal of the internet of things needs to send more important data, and in order to ensure that the more important data of the terminal of the internet of things are sent successfully, the terminal of the internet of things firstly feeds back an important data transmission request, so as to inform the gateway that the terminal of the internet of things has important data requirement, the important data transmission request carries the important degree and the size of the data to be sent, after the gateway receives the important data transmission request, the time slot can be reallocated to the internet of things terminal according to the importance degree and the size of the data needing to be sent, for example, the larger the importance degree of the data needing to be sent is, the larger the size of the data needing to be sent is, the longer the time slot is reallocated to the internet of things terminal, the more the importance degree of the data needing to be sent by the internet of things terminal is general, the more the size of the data needing to be sent is, and the time slot reallocated to the internet of things terminal can be a fixed value.
The specific implementation of reallocating the time slot to the terminal of the internet of things may be to reallocate the time slot on the basis of the originally allocated time slot, for example, how many time slots are added before and after the originally allocated time slot a, or how many time slots are added before/after the originally allocated time slot a, or the like. Certainly, the time slots allocated to the internet of things terminal again may not be allocated based on the time slots allocated in the past, for example, how many unoccupied time slots with different lengths are allocated to the internet of things terminal on the target working frequency point.
Optionally, after the gateway allocates a timeslot for the terminal carried by the target access point, the method further includes: the gateway receives a flow control request sent by an Internet of things terminal i borne by the target access point, the flow control request carries the important priority of the Internet of things terminal i, and the gateway reallocates time slots for the Internet of things terminal i according to the time resources in the target working frequency point and the important priority of the Internet of things terminal i.
And in order to ensure that the data of the terminal of the internet of things with larger data volume can be successfully transmitted, after the gateway receives a flow control request transmitted by the terminal i of the internet of things, the gateway reallocates the time slot for the terminal i of the internet of things again according to the time resource in the target working frequency point and the important priority of the terminal i of the internet of things. For example, the more important the important priority of the internet of things terminal i is, the longer the time slot is allocated to the internet of things terminal i again, and the time slot allocated to the internet of things terminal i again by the important priority of the internet of things terminal i may be a fixed value.
The specific implementation of reallocating the time slot to the terminal i of the internet of things may be to reallocate the time slot on the basis of the originally allocated time slot, for example, how many time slots are added before and after the originally allocated time slot a, or how many time slots are added before/after the originally allocated time slot a, or the like. Certainly, the time slot allocated to the internet of things terminal i again may not be allocated based on the time slot allocated in the past, for example, how many unoccupied time slots with lengths are allocated to the internet of things terminal on the target working frequency point.
Optionally, a specific implementation manner of the N working frequency points corresponding to the N access points in the gateway detection environment is as follows: and when the interference intensity of the wireless interference signal to the working frequency point of the target access point is detected to be greater than a preset threshold value, the gateway detects N working frequency points corresponding to N access points in the environment. That is to say, the triggering condition in step S201 above is triggered when the gateway detects that the interference strength of the wireless interference signal to the target access point operating frequency point is greater than a preset threshold. Of course, the condition triggering the step S201 may also be that a new access point performs registration, or that the gateway triggers when detecting a traffic control request reported by a target access point, where the traffic control request is used to inform the gateway that the target access point requests traffic control, and so on.
Optionally, before the gateway detects N working frequency points corresponding to N access points in the environment, the method further includes: the gateway acquires the important priority of the target access point and determines whether the important priority of the target access point is a preset important priority or not; if the important priority of the target access point is a preset important priority, the gateway selects a working frequency point for the target access point from a reserved working frequency band, wherein the reserved working frequency band is a working frequency band reserved specially for processing special events; and if the important priority of the target access point is not the preset important priority, the gateway detects N working frequency points corresponding to N access points in the environment.
Specifically, the important priorities of some access points are larger, the larger the important priority is, the more important the access point is, the more important the data sent by the access point is, in order to ensure that the data of the more important access point is successfully sent, before allocating the working frequency point to the access point, the gateway determines the important priority of the access point first, if the important priority of the access point is the preset important priority, the gateway selects the working frequency point for the access point from the reserved working frequency band, and if the important priority of the access point is not the preset important priority, the step S201 is executed.
The reserved operating band is an operating band reserved specifically for handling special events, that is, the operating band is usually not used at all, and is used only when a special event (such as an exception, an emergency, an access point is important, and the like) occurs.
Furthermore, the N working frequency points are not in the reserved working frequency band, the interference degree of the reserved working frequency band is lower than that of the N working frequency points, when the target access point is important, the frequency points in the reserved working frequency band are selected for working, and therefore the anti-interference capability and the communication reliability can be further improved.
The specific implementation mode that the gateway selects the working frequency point for the access point from the reserved working frequency band is as follows: the gateway can optionally select an unoccupied working frequency point in the reserved working frequency band as the working frequency point of the access point, or the gateway can select a working frequency point with less interference in the reserved working frequency band as the working frequency point of the target access point, and the like.
The reserved working frequency band is between 100MHz and 1GHz, and may be, for example, 100MHz to 300MHz, 400MHz to 600MHz, 700MHz to 900MHz, or other frequency bands.
Optionally, the action of acquiring the important priority of the target access point by the gateway is executed when the gateway detects that the interference strength of the wireless interference signal on the working frequency point of the target access point is greater than a preset threshold.
It can be seen that, in the embodiment of the present invention, a gateway/access point detects N working frequency points corresponding to N access points in an environment and N signal strengths corresponding to the N access points, where N is an integer greater than 1; the gateway/access point acquires the number of the terminals of the Internet of things borne by each access point in the N access points; and the gateway/access point selects a target working frequency point for a target access point according to the N working frequency points, the N signal strengths and the number of the terminals of the Internet of things borne by each access point, wherein the N access points do not comprise the target access point. Therefore, different working frequency points are adopted for communication, the channel monopolization of each access point communication time interval in the same space range is guaranteed, and the anti-interference capability and the communication reliability are improved.
For example, as shown in fig. 3, fig. 3 is a schematic diagram of selecting working frequency points for a target access point according to an embodiment of the present invention, where N is 8, 8 access points include a first access point, a second access point, a third access point, a fourth access point, a fifth access point, a sixth access point, a seventh access point, and an eighth access point, and the 8 working frequency points corresponding to the 8 access points include: 200MHz, the second work frequency point 300MHz, the third work frequency point 350MHz, the fourth work frequency point 450MHz, the fifth work frequency point 480MHZ, the sixth work frequency point 540MHZ, the seventh work frequency point 600MHZ and the eighth work frequency point 680MHZ are frequently first work, and the signal intensity that these 4 work frequency points correspond has: 150db, 120db, 100db, 80db, 100db, 50db, 30db, 20db, the number of the internet of things terminals carried by 8 access points is as follows: 300. 255, 155, 144, 200, 155, 133, and 50, it can be seen that after the 8 working frequency points are sorted, the obtained anti-interference list is shown in table 2. The gateway selects a target working frequency point for the target access point according to table 2, for example, the number of the internet of things terminals borne by the eighth access point is relatively small, and the signal strength is relatively weak, and the gateway can select a working frequency point near the working frequency point 680MHZ as the target working frequency point of the target access point, for example, select 720MHZ as the target working frequency point. Certainly, the gateway may not select a working frequency point for the target access point near the working frequency point 680MHZ, for example, as shown in fig. 3, the frequency band between 680MHZ and 1GHz is not occupied, and the gateway may select a working frequency point for the target access point in the frequency band.
TABLE 2
An embodiment of the present invention further provides another more detailed method flow, as shown in fig. 4, where an execution main body for executing the method for selecting the working frequency point may be a gateway or an access point, and the following description takes the execution main body as the gateway as an example, and includes:
s401, the gateway detects that the interference intensity of the wireless interference signal to the working frequency point of the target access point is larger than a preset threshold value.
If yes, go to step S402.
If not, no operation is performed.
S402, the gateway acquires the important priority of the target access point.
S403, the gateway determines whether the important priority of the target access point is a preset important priority.
If yes, go to step S404.
If not, go to step S405.
S404, the gateway selects a working frequency point for the target access point from the reserved working frequency band.
S405, the gateway detects N working frequency points corresponding to N access points in an environment and N signal strengths corresponding to the N access points, wherein N is an integer greater than 1.
S406, the gateway acquires the number of the terminals of the Internet of things borne by each access point of the N access points.
S407, the gateway sequences the N working frequency points according to the N signal intensities and the number of the Internet of things terminals borne by each access point to obtain an anti-interference list.
And S408, the gateway selects a target working frequency point for the target access point according to the anti-interference list.
S409, the gateway broadcasts the target working frequency point to the terminal carried by the target access point through a preset registration frequency point, and allocates time slot for the terminal carried by the target access point.
S410, the gateway receives an important data transmission request sent by an Internet of things terminal i carried by the target access point, wherein the important data transmission request carries the importance degree of the data to be transmitted and the size of the data to be transmitted.
And S411, the gateway reallocates the time slot for the terminal i of the Internet of things according to the importance degree of the data to be transmitted and the size of the data to be transmitted.
It should be noted that, the specific implementation of the steps of the method shown in fig. 4 can refer to the specific implementation described in the above method, and will not be described here.
An embodiment of the present invention further provides a device 500 for selecting a working frequency point, as shown in fig. 5, where the device for selecting a working frequency point shown in fig. 5 is the above-mentioned gateway/access point, and includes:
a detection module 501, configured to detect N working frequency points corresponding to N access points in an environment and N signal strengths corresponding to the N access points, where N is an integer greater than 1;
an information obtaining module 502, configured to obtain the number of internet of things terminals borne by each of the N access points;
a frequency point selecting module 503, configured to select a target working frequency point for a target access point according to the N working frequency points, the N signal strengths, and the number of terminals of the internet of things borne by each access point, where the N access points do not include the target access point.
Optionally, the frequency point selecting module 503 is specifically configured to:
sequencing the N working frequency points according to the N signal intensities and the number of the Internet of things terminals borne by each access point to obtain an anti-interference list;
and selecting a target working frequency point for a target access point according to the anti-interference list.
Optionally, after the frequency point selecting module 503 selects a target working frequency point for a target access point according to the N working frequency points, the N signal strengths, and the number of terminals of the internet of things borne by each access point, the apparatus further includes:
a broadcasting module 504, configured to broadcast the target working frequency point to a terminal carried by the target access point through a preset registration frequency point;
a timeslot allocating module 505, configured to allocate a timeslot for the terminal carried by the target access point.
Optionally, after the timeslot allocation module 505 allocates a timeslot for the terminal carried by the target access point, the apparatus further includes:
a receiving module 506, configured to receive an important data transmission request sent by an internet of things terminal i carried by the target access point, where the important data transmission request carries an importance degree of data to be transmitted and a size of the data to be transmitted;
the time slot allocation module 505 is further configured to reallocate a time slot for the internet of things terminal i according to the importance degree of the data to be transmitted and the size of the data to be transmitted.
Optionally, the detection module 501 is specifically configured to:
and when the interference intensity of the wireless interference signal to the working frequency point of the target access point is detected to be greater than a preset threshold value, detecting N working frequency points corresponding to N access points in the environment.
It should be noted that the modules (the detecting module 501, the information obtaining module 502, the frequency point selecting module 503, the broadcasting module 504, the time slot allocating module 505, and the receiving module 506) are configured to perform relevant steps of the method. For example, the detecting module 501 is configured to execute the above step S201, the information acquiring module 502 is configured to execute the above step S202, the broadcasting module 504 and the timeslot allocating module 505 are configured to execute the above step S409, the receiving module 506 is configured to execute the above step S410, and the timeslot allocating module 505 is further configured to execute the above step S411. In addition, the specific implementation of the modules for performing the relevant steps of the method can be referred to the method, and will not be described here.
In this embodiment, the selecting device 500 for operating frequency points is presented in a module form. A "module" herein may refer to an application-specific integrated circuit (ASIC), a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other devices that may provide the described functionality. In addition, the detecting module 501, the information acquiring module 502, the frequency point selecting module 503, the broadcasting module 504, and the time slot allocating module 505 may be implemented by the processor 601 of the terminal device shown in fig. 6, and the receiving module 506 may be implemented by the communication interface 603 of the terminal device shown in fig. 6.
As shown in fig. 6, the device 600 for selecting an operating frequency point may be implemented in the structure in fig. 6, where the device 600 for selecting an operating frequency point includes at least one processor 601, at least one memory 602, and at least one communication interface 603. The processor 601, the memory 602 and the communication interface 603 are connected through the communication bus and perform communication with each other.
The processor 601 may be a general purpose Central Processing Unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of programs according to the above schemes.
The Memory 602 may be a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to these. The memory may be self-contained and coupled to the processor via a bus. The memory may also be integral to the processor.
The memory 602 is used for storing application program codes for executing the above scheme, and the processor 601 controls the execution. The processor 601 is used to execute application program code stored in the memory 602.
The code stored in the memory 602 may execute the above-mentioned method for selecting a working frequency point executed by the terminal device, such as detecting N working frequency points corresponding to N access points in an environment and N signal strengths corresponding to the N access points, where N is an integer greater than 1; acquiring the number of the terminals of the Internet of things borne by each access point in the N access points; and selecting target working frequency points for target access points according to the N working frequency points, the N signal strengths and the number of the terminals of the Internet of things borne by each access point, wherein the N access points do not comprise the target access points.
An embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any one of the methods described in the above method embodiments, and the computer includes a device for selecting a working frequency point.
Embodiments of the present invention also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any of the methods as recited in the above method embodiments. The computer program product can be a software installation package, and the computer comprises a working frequency point selection device.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a memory and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The above embodiments of the present invention are described in detail, and the principle and the implementation of the present invention are explained by applying specific embodiments, and the above description of the embodiments is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in view of the above, the content of the present specification should not be construed as a limitation to the present invention.
Claims (6)
1. A method for selecting working frequency points is characterized by comprising the following steps:
detecting N working frequency points corresponding to N access points in an environment and N signal intensities corresponding to the N access points, wherein N is an integer greater than 1;
acquiring the number of the terminals of the Internet of things borne by each access point in the N access points;
selecting a target working frequency point for a target access point according to the N working frequency points, the N signal strengths and the number of the terminals of the Internet of things borne by each access point, wherein the N access points do not comprise the target access point;
the N working frequency points and the target working frequency point are between 100MHz and 1 GHz;
wherein, N work frequency points that N access point corresponds to in the detection environment, and N signal strength that N access point corresponds includes: when a new access point is detected to register or a flow control request reported by a target access point is detected, the flow control request is used for informing a gateway of the target access point to request flow control, and N working frequency points corresponding to N access points in an environment and N signal strengths corresponding to the N access points are detected;
the method for selecting the target working frequency point for the target access point according to the N working frequency points, the N signal strengths and the number of the internet of things terminals borne by each access point comprises the following steps: sequencing the N working frequency points according to the N signal intensities and the number of the Internet of things terminals borne by each access point to obtain an anti-interference list, and selecting a target working frequency point for a target access point according to the anti-interference list;
specifically, N is 4, 4 access points are respectively a first access point, a second access point, a third access point and a fourth access point, 4 working frequency points corresponding to the 4 access points are respectively a first working frequency point 200MHz, a second working frequency point 300MHz, a third working frequency point 350MHz and a fourth working frequency point 450MHz, signal intensities corresponding to the 4 working frequency points are respectively 100db, 50db, 30db and 20db, the number of the internet of things terminals borne by the 4 access points is respectively 200, 155, 133 and 50, the 4 working frequency points are sequenced to obtain an anti-interference list, and the working frequency points near the fourth working frequency point 450MHz are selected according to the anti-interference list to be used as target work of the target access point;
after selecting a target working frequency point for a target access point according to the N working frequency points, the N signal strengths and the number of the terminals of the internet of things borne by each access point, the method further comprises the following steps: broadcasting the target working frequency point to a terminal carried by the target access point through a preset registration frequency point, and allocating a time slot to the terminal carried by the target access point;
after allocating a time slot to the terminal carried by the target access point, the method further includes: receiving a flow control request sent by an Internet of things terminal i borne by the target access point, wherein the flow control request carries the important priority of the Internet of things terminal i, and reallocating time slots for the Internet of things terminal i according to the time resources in the target working frequency point and the important priority of the Internet of things terminal i.
2. The method according to claim 1, wherein said detecting N working frequency points corresponding to N access points in the environment comprises:
and when the interference intensity of the wireless interference signal to the working frequency point of the target access point is detected to be greater than a preset threshold value, detecting N working frequency points corresponding to N access points in the environment.
3. The method of claim 1, wherein after allocating the time slot for the terminal carried by the target access point, the method further comprises:
receiving an important data transmission request sent by an Internet of things terminal i borne by the target access point, wherein the important data transmission request carries the importance degree of data to be transmitted and the size of the data to be transmitted;
and reallocating time slots for the Internet of things terminal i according to the importance degree of the data to be transmitted and the size of the data to be transmitted.
4. The utility model provides a selection device of work frequency point which characterized in that includes:
the system comprises a detection module, a detection module and a processing module, wherein the detection module is used for detecting N working frequency points corresponding to N access points in an environment and N signal intensities corresponding to the N access points, and N is an integer greater than 1;
the information acquisition module is used for acquiring the number of the terminals of the Internet of things borne by each access point in the N access points;
a frequency point selection module, configured to select a target working frequency point for a target access point according to the N working frequency points, the N signal strengths, and the number of internet of things terminals carried by each access point, where the N access points do not include the target access point;
the N working frequency points and the target working frequency point are between 100MHz and 1 GHz;
wherein, the detection module is specifically configured to: when a new access point is detected to register or a flow control request reported by a target access point is detected, the flow control request is used for informing a gateway of the target access point to request flow control, and N working frequency points corresponding to N access points in an environment and N signal strengths corresponding to the N access points are detected;
the frequency point selection module is specifically configured to: sequencing the N working frequency points according to the N signal intensities and the number of the Internet of things terminals borne by each access point to obtain an anti-interference list, and selecting a target working frequency point for a target access point according to the anti-interference list;
specifically, N is 4, 4 access points are respectively a first access point, a second access point, a third access point and a fourth access point, 4 working frequency points corresponding to the 4 access points are respectively a first working frequency point 200MHz, a second working frequency point 300MHz, a third working frequency point 350MHz and a fourth working frequency point 450MHz, signal intensities corresponding to the 4 working frequency points are respectively 100db, 50db, 30db and 20db, the number of the internet of things terminals borne by the 4 access points is respectively 200, 155, 133 and 50, the 4 working frequency points are sequenced to obtain an anti-interference list, and the working frequency points near the fourth working frequency point 450MHz are selected according to the anti-interference list to be used as target work of the target access point;
wherein the apparatus further comprises:
the broadcasting module is used for broadcasting the target working frequency point to a terminal carried by the target access point through a preset registration frequency point;
a time slot allocation module, configured to allocate a time slot for a terminal carried by the target access point;
wherein the apparatus further comprises:
the receiving module is used for receiving a traffic control request sent by an internet of things terminal i borne by the target access point after time slots are allocated to the terminal borne by the target access point, wherein the traffic control request carries the important priority of the internet of things terminal i;
and the time slot allocation module is also used for reallocating the time slot for the Internet of things terminal i according to the time resource in the target working frequency point and the important priority of the Internet of things terminal i.
5. The apparatus of claim 4, wherein the detection module is specifically configured to:
and when the interference intensity of the wireless interference signal to the working frequency point of the target access point is detected to be greater than a preset threshold value, detecting N working frequency points corresponding to N access points in the environment.
6. The apparatus of claim 4, wherein:
the receiving module is further configured to receive an important data transmission request sent by an internet of things terminal i carried by the target access point, where the important data transmission request carries an importance degree of data to be transmitted and a size of the data to be transmitted;
and the time slot allocation module is further used for reallocating the time slot for the terminal i of the internet of things according to the importance degree of the data to be transmitted and the size of the data to be transmitted.
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| PCT/CN2017/100767 WO2019010797A1 (en) | 2017-07-14 | 2017-09-06 | Method and device for selecting operating frequency point |
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| CN109067487B (en) * | 2018-10-23 | 2021-05-25 | Oppo广东移动通信有限公司 | Channel selection method, terminal and computer storage medium |
| CN109168188B (en) * | 2018-11-09 | 2021-06-22 | 四川欧莱德精密电子有限公司 | Wireless gateway allocation method, wireless gateway, wireless access module and Internet of things equipment |
| CN110136404A (en) * | 2019-05-05 | 2019-08-16 | Oppo广东移动通信有限公司 | Door state based reminding method and relevant device |
| CN110290563A (en) * | 2019-05-28 | 2019-09-27 | 菜鸟智能物流控股有限公司 | Wireless access switching method, device and system and electronic equipment |
| CN112051561A (en) * | 2019-06-06 | 2020-12-08 | 阿里巴巴集团控股有限公司 | Distance measurement method and device |
| CN110290529B (en) * | 2019-08-13 | 2023-04-25 | 北京百佑科技有限公司 | Networking balancing method, device and server |
| CN110336729B (en) * | 2019-08-13 | 2021-08-20 | 北京百佑科技有限公司 | Star network balanced networking method and device and Internet of things equipment |
| CN110536480B (en) * | 2019-09-24 | 2021-06-22 | 京信通信系统（中国）有限公司 | Spectrum management method and device, computer equipment and storage medium |
| CN113518411A (en) * | 2021-04-14 | 2021-10-19 | 珠海派诺科技股份有限公司 | Communication network access connection method of Internet of things equipment |
| CN113676847A (en) * | 2021-07-07 | 2021-11-19 | 珠海派诺科技股份有限公司 | Anti-interference communication method and system based on Internet of things and intelligent terminal |
| CN116233856B (en) * | 2023-05-05 | 2023-10-27 | 国网信息通信产业集团有限公司 | MESH ad hoc network communication device and method based on emergency communication system |
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