CN110730217A - Transmission link adjusting method and device of access control system, access control equipment and storage medium - Google Patents
Transmission link adjusting method and device of access control system, access control equipment and storage medium Download PDFInfo
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- CN110730217A CN110730217A CN201910905364.7A CN201910905364A CN110730217A CN 110730217 A CN110730217 A CN 110730217A CN 201910905364 A CN201910905364 A CN 201910905364A CN 110730217 A CN110730217 A CN 110730217A
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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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/61—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources taking into account QoS or priority requirements
Abstract
The invention relates to a method and a device for adjusting a transmission link of an access control system, access control terminal equipment and a computer storage medium, wherein the method comprises the following steps: the method comprises the steps of constructing a multi-path transmission link of the access control system, determining a target service type of target service data to be transmitted, selecting a corresponding target data transmission link from the multi-path data transmission link according to the target service type, and finally transmitting the target service data in the access control system through the target data transmission link, so that transmission of transmission data of different service types by using the corresponding transmission link is realized, data delay is reduced, and the accuracy of real-time service functions of the access control system is improved.
Description
Technical Field
The present invention relates to the field of access control system technologies, and in particular, to a method and an apparatus for adjusting a transmission link of an access control system, an access control terminal device, and a computer-readable storage medium.
Background
With the continuous development of internet technology, especially the continuous maturity of mobile internet and cloud platform, a technical scheme of an access control system based on wide area network deployment appears, access controllers at different geographic positions in the system can access the internet in various broadband IP network access modes, a platform server is deployed on the wide area network, a user management terminal of the internet is accessed at any geographic position, and the access state monitoring and control can be carried out on a door to which the authority belongs at any time and any place by means of information interaction between the platform server and the system platform server, so that the problem of centralized integrated management of multi-place access control with scattered geographic positions and wide area network access is solved.
However, in the conventional technology, data inter-access between the access controllers in the access control system or between the access controller and the user management terminal needs to be forwarded for the second time through the central platform server, and when the access control system is large in scale, the excessive data delay may cause the action accuracy of service functions with certain real-time requirements, such as remote control, remote multi-door linkage interlocking, and the like, to be affected.
Disclosure of Invention
Therefore, it is necessary to provide a transmission link adjustment method for an access control system, a transmission link adjustment device for an access control system, an access control terminal device, and a computer-readable storage medium, for solving the technical problem of low accuracy of real-time service functions of the access control system in the conventional technology.
A method for adjusting a transmission link of an access control system comprises the following steps:
constructing a multi-path data transmission link of the access control system; the multi-path data transmission link is constructed based on different service types; the multi-path data transmission links are all transmission links with a mesh network structure;
determining a target service type of target service data to be transmitted;
selecting a corresponding target data transmission link from the multi-path data transmission links according to the target service type;
and transmitting the target service data in the access control system through the target data transmission link.
An access control system transmission link adjusting device, comprising:
the multi-path link construction module is used for constructing a multi-path data transmission link of the access control system; the multi-path data transmission link is constructed based on different service types; the multi-path data transmission links are all transmission links with a mesh network structure;
the service type determining module is used for determining the target service type of the target service data to be transmitted;
the transmission link selection module is used for selecting a corresponding target data transmission link from the multiple data transmission links according to the target service type;
and the data transmission module is used for transmitting the target service data in the access control system through the target data transmission link.
An access terminal device comprising a processor and a memory, the memory storing a computer program, the processor implementing the following steps when executing the computer program: constructing a multi-path data transmission link of the access control system; the multi-path data transmission link is constructed based on different service types; the multi-path data transmission links are all transmission links with a mesh network structure; determining a target service type of target service data to be transmitted; selecting a corresponding target data transmission link from the multiple data transmission links according to the target service type; and transmitting the target service data in the access control system through the target data transmission link.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of: constructing a multi-path data transmission link of the access control system; the multi-path data transmission link is constructed based on different service types; the multi-path data transmission links are all transmission links with a mesh network structure; determining a target service type of target service data to be transmitted; selecting a corresponding target data transmission link from the multiple data transmission links according to the target service type; and transmitting the target service data in the access control system through the target data transmission link.
According to the method and the device for adjusting the transmission link of the access control system, the access control terminal equipment and the storage medium, the multi-path transmission link of the access control system is constructed, the target service type of the target service data to be transmitted is determined, the corresponding target data transmission link is selected from the multi-path data transmission link according to the target service type, and finally the target service data is transmitted in the access control system through the target data transmission link, so that the transmission data of different service types are transmitted by using the corresponding transmission link, the data delay is reduced, and the accuracy of the real-time service function of the access control system is improved.
Drawings
Fig. 1 is an application scenario diagram of a transmission link adjustment method of an access control system in an embodiment;
FIG. 2 is a diagram showing the construction of an access controller according to an embodiment;
fig. 3 is a schematic flow chart illustrating a method for adjusting a transmission link of an access control system according to an embodiment;
fig. 4 is a transmission link topology diagram of a mesh network structure of the access control system in one embodiment;
FIG. 5 is a schematic flow chart illustrating a method for constructing multiple data transmission links of an access control system according to an embodiment;
fig. 6 is a schematic flow chart illustrating a method for constructing multiple data transmission links according to the network quality requirements corresponding to different service types and the transmission link quality in one embodiment;
fig. 7 is a schematic flow chart of a method for acquiring transmission link quality according to an embodiment;
FIG. 8 is a schematic flow chart diagram illustrating the network quality estimation phase in one embodiment;
FIG. 9 is a flowchart illustrating a mesh point-to-point traversal route dynamic update phase based on network quality ranking in one embodiment;
FIG. 10 is a flow chart illustrating the adaptive adjustment phase of the data transmission path according to one embodiment;
fig. 11 is a block diagram illustrating a transmission link adjusting apparatus of an access control system according to an embodiment;
fig. 12 is an internal structure diagram of the access control terminal device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that the term "first \ second" referred to in the embodiments of the present invention only distinguishes similar objects, and does not represent a specific ordering for the objects, and it should be understood that "first \ second" may exchange a specific order or sequence when allowed. It should be understood that "first \ second" distinct objects may be interchanged under appropriate circumstances such that embodiments of the invention described herein may be practiced in sequences other than those illustrated or described herein.
The method for adjusting the transmission link of the access control system provided by the invention can be applied to the application scene shown in fig. 1, and fig. 1 is an application scene diagram of the method for adjusting the transmission link of the access control system in one embodiment, wherein terminals communicate with a server through a network, and the terminals can also communicate with a boundary route through the network.
In one embodiment, the access control system comprises a platform server and an access control terminal device.
The entrance guard terminal equipment comprises a client management terminal and an entrance guard controller, can be accessed to a wide area network (which can be a fixed public network IP or a common NAT shared network) in various ways according to the management requirements of users, and can be deployed at any selected regional position, such as a plurality of network points distributed on the world; the platform server is a data center platform of the building access control system, can be deployed in a computer or a cloud with a public network IP (Internet protocol), provides background services for the control data processing of terminal devices such as a system access controller and a client management end, for example, personnel identity certificate information issuing, passing in and out record storage, state monitoring and the like, provides initial registration for adding a newly-added terminal device into a system mesh network, and provides a data access interface for a management client.
In an embodiment, the access controller is generally deployed near a location area where access is controlled by access, as shown in fig. 2, fig. 2 is a structural diagram of the access controller in an embodiment, and can access a wide area network by using an NAT routing manner in any network environment, a single access controller can complete access management of multiple on-site accesses, and generally has a multi-path identity authentication module, an access management module, an audio/video processing module, an intrusion detection and alarm data interface, a door lock control module, a mesh network routing maintenance module, a platform data uploading module, and a data transmission path adaptive adjustment module.
In an embodiment, the client management side may be a Web browser, APP software, a wechat public signal, and the like, may provide a system management interface for users (access control system users, building security managers), perform convenient information distribution, may be deployed on a common PC or mobile terminal device (e.g., a smart phone, a PAD, and the like), may access a wide area network (i.e., a public network IP is not required) by using an NAT routing manner in any network environment, such as 4G, WIFI, a common wired home broadband, and the like, has a management function (e.g., information analysis, processing, query, statistics, output, and the like) corresponding to the current login user authorization, may adjust a data acquisition source thereof according to a data service type and a current network quality, and may be a platform server or directly an access controller.
In an embodiment, a method for adjusting a transmission link of an access control system is provided, referring to fig. 3, where fig. 3 is a schematic flow chart of the method for adjusting a transmission link of an access control system in an embodiment, and the method is described by taking a terminal device of an access control system as an example, where the method for adjusting a transmission link of an access control system may include the following steps:
s101, constructing a multi-path data transmission link of the access control system; the multi-path data transmission link is constructed based on different service types; the multi-path data transmission links are all transmission links with a mesh network structure.
The service type may include: real-time service, non-real-time service and large data volume service, and the requirements of data of different service types on network quality are different, for example, the real-time service generally requires higher network quality than the non-real-time service, and a plurality of data transmission links with different network qualities can be constructed according to the requirements of different service types.
Further, the multiple data transmission links are all mesh-structured transmission links, fig. 4 is a topological diagram of the mesh-structured transmission links of the access control system in one embodiment, as shown in fig. 4, the mesh-structured transmission links of the access control system allow communication between terminal devices of the access control system to be performed without passing through a server, and communication between terminals can be performed through different data links, which is a basis for constructing multiple data transmission links of the access control system based on different service types.
Step S102, determining the target service type of the target service data to be transmitted.
The target service type of the target service data to be transmitted corresponds to different service types of a multi-path data transmission link of the gate inhibition system.
Step S103, selecting a corresponding target data transmission link from the multiple data transmission links according to the target service type;
and step S104, transmitting the target service data in the access control system through the target data transmission link.
According to the method for adjusting the transmission link of the access control system, the multi-path transmission link of the access control system is constructed, the target service type of the target service data to be transmitted is determined, the corresponding target data transmission link is selected from the multi-path data transmission link according to the target service type, and finally the target service data is transmitted in the access control system through the target data transmission link, so that the transmission data of different service types are transmitted by using the corresponding transmission link, the data delay is reduced, and the accuracy of the real-time service function of the access control system is improved.
In an embodiment, a method for constructing multiple data transmission links of an access control system is provided, and fig. 5 is a schematic flow chart of the method for constructing multiple data transmission links of an access control system in an embodiment, where the multiple data transmission links of the access control system are constructed based on different service types, and a construction process may include the following steps:
step S201, a whole system point-to-point route crossing table of the access control system is obtained.
The system-wide point-to-point route traversing table is generated and updated in the construction of the mesh structure transmission link of the access control system according to the following table 1.
Table 1 a full system point-to-point route traversal table step S202, a first sub-transmission link quality between a local terminal and a transit node and a second sub-transmission link quality between the transit node and a target terminal are obtained from the full system point-to-point route traversal table.
The first sub-transmission link quality includes transmission link quality between the local terminal and the relay node, the second transmission link quality includes transmission link quality between the relay node and the target terminal, and the transmission link quality can be calculated according to communication delay and packet loss rate of the transmission link.
Step S203, calculating the transmission link quality between the local terminal and the destination terminal according to the first sub-transmission link quality and the second sub-transmission link quality.
Specifically, in one embodiment, the transmission link quality between the local terminal and the transit node and the transmission link quality between the transit node and the target terminal may be added, so as to calculate the transmission link quality between the local terminal and the target terminal.
Step S204, determining network quality requirements corresponding to different service types.
Specifically, the data of different service types correspond to different network quality requirements, and the transmitted service data may be classified, where the transmitted service data is the data to be transmitted. For example, the transmitted service data may be divided into real-time traffic, non-real-time traffic and large data volume traffic, and the network quality requirements required for the different traffic type data are determined separately.
Step S205, constructing a multi-path data transmission link according to the network quality requirements corresponding to the different service types and the transmission link quality.
Specifically, according to the transmission link quality between the local terminal and the destination terminal obtained in step S203 and the network quality requirement required by the different service data obtained in step S204, if the transmission link quality between the local terminal and the destination terminal meets the network quality requirement required by the different service data, the link is constructed as a multi-path data transmission link for transmitting the service type data.
In one embodiment, step S205 may be specifically implemented by the following steps, as shown in fig. 6, where fig. 6 is a schematic flow chart of a method for constructing multiple data transmission links according to the network quality requirements corresponding to different service types and the transmission link quality in one embodiment, and includes the following steps:
step S301, according to the network quality requirement, setting the transmission quality threshold value suitable for different service types.
Specifically, a transmission quality threshold adapted to the network quality requirement may be set according to the network quality requirements corresponding to different service type data. For example: as shown in table 2, corresponding transmission quality thresholds may be set for the real-time service data, the non-real-time service data, and the large data volume service data, respectively.
Table 2 classification of transmission traffic data
Step S302, extracting the target transmission link quality closest to the transmission quality threshold from the transmission link quality between the local terminal and the target terminal;
step S303, determining a target transit node corresponding to the target transmission link quality.
Specifically, the transmission link quality between all local terminals and the destination terminal is extracted, the transmission link quality is compared with the transmission quality thresholds corresponding to the data of different service types, the transmission link with the transmission link quality closest to the transmission quality threshold is found, and the target transfer node corresponding to the link is determined.
Step S304, obtaining the target transit node information of the target transit node, and obtaining the local terminal information of the local terminal and the target terminal information of the target terminal;
step S305, writing the local terminal information, the target terminal information, the corresponding service type and the target transit node information as routing entries into a service hierarchical transmission routing table of the whole-system mesh network equipment of the access control system, and constructing a multi-path data transmission link.
Specifically, the device number of the target transit node, the local terminal device number and the target terminal device number can be found out by inquiring the point-to-point route crossing table of the whole system, and the device number of the target transit node, the local terminal device number, the target terminal device number, the corresponding service type and the device number of the target transit node are written into the hierarchical transmission route table of the whole system mesh network device service of the access control system as entries, so that a multi-path data transmission link based on different service types is constructed. The service hierarchical transmission routing table of the full-system mesh network equipment is shown in table 3 below, the corresponding service type may be a transmission link corresponding to multiple service types, and at this time, the corresponding multiple service types are all written into the service hierarchical transmission routing table of the full-system mesh network equipment of the access control system.
Table 3 hierarchical transmission route table for mesh network device service
In one embodiment, after obtaining the system-wide point-to-point route traversal table, the method further includes: judging whether a direct transmission link directly connected with a target terminal exists or not based on a point-to-point route crossing table of the whole system; if yes, extracting the direct transmission link quality of the direct transmission link; and if the quality of the direct transmission link is greater than the transmission quality threshold value suitable for different service types, writing the local terminal information, the target terminal information, the non-transfer node and the corresponding service type as routing entries into a service hierarchical transmission routing table of the whole-system mesh network equipment of the access control system, and constructing a multi-path data transmission link. The corresponding service type can be that one transmission link corresponds to multiple service types, and at this time, the corresponding multiple service types are all written into a service hierarchical transmission routing table of the whole-system mesh network equipment of the access control system. Specifically, whether a direct transmission link between the local terminal and the target terminal exists can be found out according to the point-to-point route crossing table of the whole system, if the direct transmission link exists, the link quality of the direct transmission link is obtained, whether the link quality of the link is larger than a transmission quality threshold value suitable for different service types is judged, and if the link quality of the link is larger than the transmission quality threshold value suitable for different service types, the target terminal equipment number, the local terminal equipment number, the non-transit node and the corresponding service type are written into a whole system mesh network equipment service hierarchical transmission routing table of the access control system as routing entries to construct a multi-path data transmission link.
In one embodiment, selecting a corresponding destination data transmission link from the multiple data transmission links according to the destination service type includes: extracting data to be transmitted from data transmission buffer areas of different target service types, wherein the data transmission buffer areas of different target service types are used for storing corresponding data to be transmitted of judged service types, respectively searching whether the data transmission buffer areas of different target service types have data to be transmitted or not after the bottom layer transmission resources of a local terminal network are idle or the transmission of the previous frame of data is finished, and inquiring a service hierarchical transmission routing table of the full-system mesh network equipment under the condition of the number of the local terminal equipment, the number of the target terminal equipment and the data service type corresponding to the data to be transmitted if the data to be transmitted exists, thereby determining routing information and selecting a corresponding target data transmission link.
In an embodiment, a method for acquiring transmission link quality is further provided, as shown in fig. 7, fig. 7 is a schematic flow chart of the method for acquiring transmission link quality in an embodiment, and includes the following steps:
step S401, inquiring the routing information of a plurality of target terminals from a whole system point-to-point routing traversing table of the access control system;
step S402, according to the routing information of the target terminals, sending link keep-alive notification frames to the target terminals by preset times, wherein the link keep-alive notification frames are used for triggering the target terminals to feed back link keep-alive response frames;
step S403, if receiving the link keep-alive response frame, obtaining the response feedback time length of the link keep-alive response frame fed back by the multiple target terminals, and calculating the data link quality of the multiple target terminals according to the response feedback time length.
Specifically, a local terminal inquires target terminal routing information included in a full-system point-to-point routing traversing table of an access control system through the full-system point-to-point routing traversing table, sends a link keep-alive notification frame to the target terminal by taking preset times as a period through the routing information, the target terminal feeds back a link keep-alive response frame to the local terminal after acquiring the link keep-alive notification frame, if the local terminal receives the link keep-alive response frame, the response feedback duration is calculated according to the time for sending the link keep-alive notification frame and the time for receiving the link keep-alive response frame, and the data link quality is calculated through the response feedback duration.
In one embodiment, calculating the response feedback duration according to the time of sending the link keep-alive notification frame and the time of receiving the link keep-alive response frame, and calculating the data link quality through the response feedback duration comprises: if the response feedback duration is less than the preset response timeout time, recording the response feedback duration; if the response feedback time length is longer than the response overtime time, determining that packet loss occurs; repeatedly sending the link keep-alive notification frame until the sending times of the link keep-alive notification frame reach the preset times, and calculating the average response feedback duration and the packet loss rate; and calculating the quality of the data link according to the average response feedback time length and the packet loss rate.
Further, in one embodiment, the method further comprises: if the packet loss rate is greater than the maximum packet loss rate, judging that the local terminal and the target terminal can not reach, and deleting the target terminal from a point-to-point route traversing table of the local terminal; if the packet loss rate is smaller than the maximum packet loss rate, adding average response feedback duration and the packet loss rate in a target terminal item of a point-to-point route traversing table of the local terminal; and finally, updating the point-to-point route traversing table of the whole system according to the point-to-point route traversing table of the local terminal.
The transmission link adjustment method of the access control system provided by the embodiment of the present invention is shown by an application example, and for convenience of description, the method is divided into 3 stages, a network quality estimation stage, a mesh point-to-point traversal route dynamic update stage based on network quality classification, and a data transmission path adaptive adjustment stage.
In this application example, the network quality estimation stage is shown in fig. 8, and fig. 8 is a schematic flow chart of the network quality estimation stage in an embodiment, which includes:
local terminal equipment N (hereinafter referred to as equipment N) is represented by NEstimateThe keep-alive frame of the secondary link is an estimation period, and the serial number N of the keep-alive framesequencePacket loss times NloseAll the equipment m are reset, and the first equipment m in the point-to-point route crossing table is taken as an object to carry out network quality estimation (T, R) between the equipment m and the point-to-point route crossing table, wherein T is the return time delay TReturnDelayR is packet loss rate Rlose；
Specifically, the method comprises the following steps:
the device n inquires the routing information of the destination device m in the point-to-point routing traversing table, periodically sends a link keep-alive notification frame to the device m, and writes a sending time stamp T1 in the payload section of the link keep-alive framestampKeep-alive frame number N1sequence(every time of hairIncrement by 1 after delivery);
the device m replies a link keep-alive response frame to the device n after receiving the link keep-alive notification frame from the device n;
the device waits for the keep-alive response frame of the device m, and immediately extracts the current receiving time stamp T2 after receiving the link keep-alive response frame from the device mstampAnd calculating the round trip delay T1return＝T2stamp-T1stamp(ii) a If a maximum time-out time (T) is reachedMAX_delay) If the later device N still does not receive the keep-alive response frame of the device m, the packet loss times N of the later device N are determinedlose1 is increased progressively;
repeating the above steps to ensure the serial number N of the framesequenceTo reach NEstimateThis link network quality estimation is then performed, where the average round trip delay isPacket loss rate Rlose＝Nlose/NEstimate；
Judging packet loss rate RloseWhether or not R is exceededMAX_loseIf yes, the node link of the current m is judged to be unreachable, and the n point-to-point link of the slave device m passes through the member table TN_MeshRouteAll the components are deleted; otherwise, adding time delay and packet loss rate parameter values of the device n serving as a source address and the device m serving as a destination in corresponding entry items in a point-to-point link penetration table of the n devices;
repeating the steps, and continuing to estimate the network transmission quality of the equipment n and the next node equipment (m +1) in the point-to-point route traversing table until the last equipment;
and the equipment n updates the self system-wide point-to-point routing table according to the point-to-point routing traversing table after the equipment n finishes the estimation of all the network quality parameters of the destination nodes, and sends the updated system-wide point-to-point routing table to other equipment in the system, and the other equipment updates the system-wide point-to-point routing table according to the updated system-wide point-to-point routing table.
Then, entering a mesh point-to-point traversal route dynamic update stage based on network quality classification, where the mesh point-to-point traversal route dynamic update stage based on network quality classification is shown in fig. 9, and fig. 9 is a schematic flow diagram of the mesh point-to-point traversal route dynamic update stage based on network quality classification in an embodiment, and includes:
each node device in the system constructs a plurality of transmission routes with different quality grades for other nodes based on the network quality requirements of different service data, taking a device n as an example, and the establishment process of a plurality of transmission routes with different quality grades between the node device and other node devices in the system is as follows:
the device n takes the first device j in the address list of the whole system device as an object to establish a plurality of paths of transmission routes with different quality grades;
specifically, the method comprises the following steps:
the method comprises the following steps: the device n firstly takes the device as a source device and the device j as a destination device, inquires a point-to-point routing table of the whole system, and extracts the link transmission quality Q of the device if the point-to-point routing table is inquiredNJ(TNJ，RNJ) And (1) further judging whether the link transmission quality is greater than a real-time service transmission quality threshold QThreshold_real(TRealMin，RRealMin) If yes, writing the routing entry of 'source equipment n, destination equipment j, real-time service and no transfer' into a service hierarchical transmission routing table of the mesh network equipment of the whole system; if not, determining a transit route corresponding to the service network quality according to the second method; (2) further judging whether its link transmission quality is greater than large flow service transmission quality threshold QThreshold_Big(TBiglMin，RBigMin) If yes, writing the routing entry of 'source equipment n, destination equipment j, large data volume service and no transfer' into a service hierarchical transmission routing table of the mesh network equipment of the whole system; if not, determining a transit route corresponding to the service network quality according to the second method; (3) further judging whether the link transmission quality is larger than the non-real-time service transmission quality threshold QThreshold_Normal(TNormalMin，RNormalMin) If yes, writing the routing entry of 'source equipment n, destination equipment j, large data volume service and no transfer' into a service hierarchical transmission routing table of the mesh network equipment of the whole system; if not, determining a transit route corresponding to the service network quality according to the second method;
the second method comprises the following steps: the device n takes the device as a source device and the device j as a destination device, inquires a point-to-point routing table of the whole system, and extracts the link quality Q from the device to other nodes in the point-to-point routing table of the system if the device n cannot be inquiredNI(TNJ，RNJ) Then, using the device j as the source device to inquire the point-to-point routing table of the system, and extracting the link quality Q from the device j to other nodes of the systemIJ(TIJ，RIJ) Sum of link quality Q for computing device n to device j via different transit nodesSumNIJ(TNJ+TIJ，RNJ_i+RIJ) And respectively transmit the quality threshold Q with real-time serviceThreshold_realQuality threshold Q for high traffic transmissionThreshold_BigNon-real time traffic transmission quality threshold QThreshold_NormalAnd taking the node equipment k with the transfer link quality sum closest to the transmission quality threshold of the target service type as transfer next hop node equipment, and writing the routing entry of 'source equipment n, destination equipment j, corresponding service type and transfer next hop equipment number k' into a service hierarchical transmission routing table of the mesh network equipment of the whole system.
Then, a data transmission path adaptive adjustment stage is entered, where the data transmission path adaptive adjustment stage is shown in fig. 10, and fig. 10 is a schematic flow diagram of the data transmission path adaptive adjustment stage in an embodiment, and the flow diagram includes:
based on the above-mentioned "system mesh topology creation based on point-to-point route traversal" and "mesh point-to-point traversal route dynamic update based on network quality classification", each device has established its own mesh device service classification transmission route table T to other nodes in the systemAll_Diffserv_RouterMesh；
Each device in the system has three-stage classified data transmission Buffer zone corresponding to three service type data, i.e. non-real-time transmission Buffer zonenormalReal-time sending Bufferreal_timeI.e. large flow sending Bufferbig；
When the device n has data to be usedWhen the data is to be transmitted, firstly, the service type of the data to be transmitted is judged, if the data is real-time data, the data is put into a transmission Buffer area Bufferreal_timeOtherwise, judging whether the data is large-flow data, if so, putting the data into a sending Buffer areabigOtherwise, as non-real-time data, put into the Buffer of sending Buffernormal；
When the transmission resource of the bottom layer of the n network of the equipment is idle or the transmission of the previous frame data is finished, firstly, the Buffer of the real-time sending Buffer is immediately detectedreal_timeIf the data needs to be transmitted, using the data to be transmitted in the real-time transmission buffer area as an object, and inquiring the routing information in a hierarchical transmission routing table of the system mesh network service under the condition of 'source equipment n, destination equipment d and data service type' corresponding to the data to be transmitted;
the device n further judges a routing mode in the routing information, and (1) if the wide area network directly passes through, the next hop is the device d, the public network address binary group of the device d is the destination end information of the packet header of the IP layer of the frame to be sent, and the source device n and the destination device d are the service data routing address information in the data load, and the data frame is sent to the device d; (2) if the frame is 'transit', taking 'next hop equipment number' in the routing table information as transit equipment q, taking a device q public network address binary group as destination end information of a packet header of an IP layer of a frame to be sent, taking 'source equipment n and destination equipment d' as routing address information in data load, and sending the data frame to the device q; (3) if the device is a local area network, replacing the internal network address binary group of the device d with an ip packet header destination address, and sending the data frame to the device d by using the source device n and the destination device d as service data routing address information in a data segment;
the device q extracts the service data routing address information in the data segment after receiving the data frame, judges whether the self device number q is the same as the destination device number d of the service data routing address information in the data segment, if the self device number q is different from the destination device number d of the service data routing address information in the data segment, takes the source device n, the destination device d and the transit as the content of the service data routing information in the data segment, takes the device d public network address binary group as the IP layer packet header destination end information, and directly sends the data frame to the device d; if q is equipment d, namely the equipment is the target equipment of the data frame, extracting the effective data content segment of the equipment and submitting the effective data content segment to analysis processing of an application program;
if not, ending to send data to be sent in the Buffer area in real time as an object, and detecting the Buffer of the self large-flow sending Buffer areabigIf the data to be transmitted needs to be transmitted, the data to be transmitted in the buffer area with large data volume is transmitted as an object, and the process is repeated;
if not, ending the transmission of the data to be transmitted in the Buffer area with large data volume as an object, and detecting the non-real-time transmission Buffer area of the Buffer areanormalIf the data to be transmitted needs to be transmitted, the data to be transmitted in the non-real-time transmission buffer area is taken as an object, and the process is repeated; if not, the process is completed.
In an embodiment, an apparatus for adjusting a transmission link of an access control system is provided, referring to fig. 11, where fig. 11 is a block diagram of a structure of an apparatus for adjusting a transmission link of an access control system in an embodiment, the apparatus for adjusting a transmission link of an access control system may include:
the multi-path link constructing module 101 is used for constructing a multi-path data transmission link of the access control system; the multi-path data transmission link is constructed based on different service types; the multi-path data transmission links are all transmission links with a mesh network structure;
a service type determining module 102, configured to determine a target service type of target service data to be transmitted;
a transmission link selection module 103, configured to select a corresponding target data transmission link from the multiple data transmission links according to the target service type;
and the data transmission module 104 is configured to transmit the target service data in the access control system through the target data transmission link.
In one embodiment, the multi-path link constructing module 101 is further configured to obtain a system-wide point-to-point route traversing table of the access control system; acquiring the quality of a first sub transmission link between a local terminal and a transit node and the quality of a second sub transmission link between the transit node and a target terminal from the point-to-point route crossing table of the whole system; calculating the transmission link quality between the local terminal and the target terminal according to the first sub transmission link quality and the second sub transmission link quality; determining network quality requirements corresponding to different service types; and constructing a multi-path data transmission link according to the network quality requirements and the transmission link quality corresponding to different service types.
In one embodiment, the multilink constructing module 101 is further configured to set transmission quality thresholds adapted to different service types according to network quality requirements; extracting target transmission link quality closest to a transmission quality threshold from transmission link quality between a local terminal and the target terminal; determining a target transfer node corresponding to the quality of a target transmission link; acquiring target transit node information of a target transit node, and acquiring local terminal information of a local terminal and target terminal information of a target terminal; and writing the local terminal information, the target terminal information, the corresponding service type and the target transfer node information as routing entries into a service hierarchical transmission routing table of the whole-system mesh network equipment of the access control system, and constructing a multi-channel data transmission link.
In an embodiment, the multipath link constructing module 101 is further configured to determine whether there is a direct transmission link directly connected to the target terminal based on a system-wide point-to-point route traversal table; if yes, extracting the direct transmission link quality of the direct transmission link; and if the quality of the direct transmission link is greater than the transmission quality threshold value suitable for different service types, writing the local terminal information, the target terminal information, the non-transfer node and the corresponding service type as routing entries into a service hierarchical transmission routing table of the whole-system mesh network equipment of the access control system, and constructing a multi-path data transmission link.
In one embodiment, the transmission link adjusting device of the access control system further comprises: the system comprises a link quality calculation module, a link quality calculation module and a link quality calculation module, wherein the link quality calculation module is used for inquiring the routing information of a plurality of target terminals from a full-system point-to-point routing crossing table of the access control system; sending link keep-alive notification frames to the target terminals by preset times according to the routing information of the target terminals, wherein the link keep-alive notification frames are used for triggering the target terminals to feed back link keep-alive response frames; and if the link keep-alive response frame is received, acquiring response feedback time length of the link keep-alive response frame fed back by the multiple target terminals, and calculating the quality of the data links of the multiple target terminals according to the response feedback time length.
In an embodiment, the link quality calculation module is further configured to record the response feedback duration if the response feedback duration is less than a preset response timeout time; if the response feedback time length is longer than the response overtime time, determining that packet loss occurs; when the sending times of the link keep-alive notification frame reach the preset times, calculating the average response feedback duration and the packet loss rate; and calculating the quality of the data link according to the average response feedback time length and the packet loss rate.
In an embodiment, the link quality calculation module is further configured to determine that the target terminal is unreachable with the target terminal if the packet loss rate is greater than the maximum packet loss rate, and delete the target terminal from the point-to-point route traversal table of the local terminal; if the packet loss rate is smaller than the maximum packet loss rate, adding average response feedback duration and the packet loss rate in a target terminal item of a point-to-point route traversing table of the local terminal; and updating the system-wide point-to-point route traversing table according to the point-to-point route traversing table.
The access control system transmission link adjusting device and the access control system transmission link adjusting method of the present invention are in one-to-one correspondence, and the specific limitations on the access control system transmission link adjusting device can be referred to the above limitations on the access control system transmission link adjusting method. All modules in the transmission link adjusting device of the access control system can be completely or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent of a processor in the access control terminal equipment, and can also be stored in a memory in the access control terminal equipment in a software form, so that the processor can call and execute the corresponding operations of the modules.
In an embodiment, an access terminal device is provided, where the access terminal device may be a terminal, and an internal structure diagram of the access terminal device may be as shown in fig. 12, and fig. 12 is an internal structure diagram of the access terminal device in an embodiment. The entrance guard terminal equipment comprises a processor, a memory, a network interface, a display screen and an input device which are connected through a system bus. The processor of the entrance guard terminal equipment is used for providing calculation and control capacity. The memory of the entrance guard terminal equipment comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the access control terminal equipment is used for being connected and communicated with an external terminal through a network. The computer program is executed by a processor to implement a transmission link adjustment method for an access control system. The display screen of the entrance guard terminal equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the entrance guard terminal equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the entrance guard terminal equipment, an external keyboard, a touch pad or a mouse and the like.
It will be understood by those skilled in the art that the structure shown in fig. 12 is only a block diagram of a part of the structure related to the solution of the present invention, and does not constitute a limitation to the access terminal device to which the solution of the present invention is applied, and a specific access terminal device may include more or less components than those shown in the figure, or combine some components, or have a different arrangement of components.
In one embodiment, there is provided an access terminal device comprising a processor and a memory, the memory storing a computer program which when executed by the processor performs the steps of: constructing a multi-path data transmission link of the access control system; the multi-path data transmission link is constructed based on different service types; the multi-path data transmission links are all transmission links with a mesh network structure; determining a target service type of target service data to be transmitted; selecting a corresponding target data transmission link from the multiple data transmission links according to the target service type; and transmitting the target service data in the access control system through the target data transmission link.
In one embodiment, the processor, when executing the computer program, further performs the steps of: acquiring a full-system point-to-point route crossing table of the access control system; acquiring the quality of a first sub transmission link between a local terminal and a transit node and the quality of a second sub transmission link between the transit node and a target terminal from a point-to-point route crossing table of the whole system; calculating the transmission link quality between the local terminal and the target terminal according to the first sub transmission link quality and the second sub transmission link quality; determining network quality requirements corresponding to different service types; and constructing a multi-path data transmission link according to the network quality requirements corresponding to different service types and the transmission link quality.
In one embodiment, the processor, when executing the computer program, further performs the steps of: setting transmission quality threshold values adaptive to different service types according to network quality requirements; extracting target transmission link quality closest to a transmission quality threshold from transmission link quality between a local terminal and a target terminal; determining a target transfer node corresponding to the quality of a target transmission link; acquiring target transit node information of a target transit node, and acquiring local terminal information of a local terminal and target terminal information of a target terminal; and writing the local terminal information, the target terminal information, the corresponding service type and the target transfer node information as routing entries into a service hierarchical transmission routing table of the whole-system mesh network equipment of the access control system, and constructing a multi-channel data transmission link.
In one embodiment, the processor, when executing the computer program, further performs the steps of: judging whether a direct transmission link directly connected with a target terminal exists or not based on a point-to-point route crossing table of the whole system; if yes, extracting the direct transmission link quality of the direct transmission link; and if the quality of the direct transmission link is greater than the transmission quality threshold value suitable for different service types, writing local terminal information, target terminal information, no transfer node and corresponding service types as routing entries into a service hierarchical transmission routing table of the whole-system mesh network equipment of the access control system, and constructing a multi-path data transmission link.
In one embodiment, the processor, when executing the computer program, further performs the steps of: inquiring the routing information of a plurality of target terminals from a full-system point-to-point routing traversing table of the access control system; sending link keep-alive notification frames to the target terminals by preset times according to the routing information of the target terminals, wherein the link keep-alive notification frames are used for triggering the target terminals to feed back link keep-alive response frames; and if the link keep-alive response frame is received, acquiring response feedback time length of the link keep-alive response frame fed back by the target terminals, and calculating the quality of the data links of the target terminals according to the response feedback time length.
In one embodiment, the processor, when executing the computer program, further performs the steps of: if the response feedback duration is less than the preset response timeout time, recording the response feedback duration; if the response feedback time length is longer than the response overtime time, determining that packet loss occurs; when the sending times of the link keep-alive notification frame reach the preset times, calculating the average response feedback duration and the packet loss rate; and calculating the quality of the data link according to the average response feedback time length and the packet loss rate.
In one embodiment, the processor, when executing the computer program, further performs the steps of: if the packet loss rate is greater than the maximum packet loss rate, judging that the target terminal is unreachable, and deleting the target terminal from the point-to-point route traversing table of the local terminal; if the packet loss rate is smaller than the maximum packet loss rate, adding average response feedback duration and the packet loss rate in a target terminal item of a point-to-point route traversing table of the local terminal; and updating the point-to-point route traversing table of the whole system according to the point-to-point route traversing table.
According to the access control terminal device, through the computer program running on the processor, the multi-path transmission link of the access control system is constructed, the target service type of the target service data to be transmitted is determined, the corresponding target data transmission link is selected from the multi-path data transmission link according to the target service type, and finally the target service data is transmitted in the access control system through the target data transmission link, so that the transmission data of different service types are transmitted by using the corresponding transmission link, the data delay is reduced, and the accuracy of the real-time service function of the access control system is improved.
It will be understood by those skilled in the art that all or part of the processes of implementing the transmission link adjustment method of the access control system according to any of the above embodiments may be implemented by a computer program instructing related hardware, where the computer program may be stored in a non-volatile computer-readable storage medium, and when executed, the computer program may include the processes of the above embodiments of the methods. Any reference to memory, storage, databases, or other media used in embodiments provided herein may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
Accordingly, in one embodiment there is provided a computer readable storage medium having a computer program stored thereon, the computer program when executed by a processor implementing the steps of: constructing a multi-path data transmission link of the access control system; the multi-path data transmission link is constructed based on different service types; the multi-path data transmission links are all transmission links with a mesh network structure; determining a target service type of target service data to be transmitted; selecting a corresponding target data transmission link from the multiple data transmission links according to the target service type; and transmitting the target service data in the access control system through the target data transmission link.
In one embodiment, the computer program when executed by the processor further performs the steps of: acquiring a full-system point-to-point route crossing table of the access control system; acquiring the quality of a first sub transmission link between a local terminal and a transit node and the quality of a second sub transmission link between the transit node and a target terminal from a point-to-point route crossing table of the whole system; calculating the transmission link quality between the local terminal and the target terminal according to the first sub transmission link quality and the second sub transmission link quality; determining network quality requirements corresponding to different service types; and constructing a multi-path data transmission link according to the network quality requirements corresponding to different service types and the transmission link quality.
In one embodiment, the computer program when executed by the processor further performs the steps of: setting transmission quality threshold values adaptive to different service types according to network quality requirements; extracting target transmission link quality closest to a transmission quality threshold from transmission link quality between a local terminal and a target terminal; determining a target transfer node corresponding to the quality of a target transmission link; acquiring target transit node information of a target transit node, and acquiring local terminal information of a local terminal and target terminal information of a target terminal; and writing the local terminal information, the target terminal information, the corresponding service type and the target transfer node information as routing entries into a service hierarchical transmission routing table of the whole-system mesh network equipment of the access control system, and constructing a multi-channel data transmission link.
In one embodiment, the computer program when executed by the processor further performs the steps of: judging whether a direct transmission link directly connected with a target terminal exists or not based on a point-to-point route crossing table of the whole system; if yes, extracting the direct transmission link quality of the direct transmission link; and if the quality of the direct transmission link is greater than the transmission quality threshold value suitable for different service types, writing local terminal information, target terminal information, no transfer node and corresponding service types as routing entries into a service hierarchical transmission routing table of the whole-system mesh network equipment of the access control system, and constructing a multi-path data transmission link.
In one embodiment, the computer program when executed by the processor further performs the steps of: inquiring the routing information of a plurality of target terminals from a full-system point-to-point routing traversing table of the access control system; sending link keep-alive notification frames to the target terminals by preset times according to the routing information of the target terminals, wherein the link keep-alive notification frames are used for triggering the target terminals to feed back link keep-alive response frames; and if the link keep-alive response frame is received, acquiring response feedback time length of the link keep-alive response frame fed back by the target terminals, and calculating the quality of the data links of the target terminals according to the response feedback time length.
In one embodiment, the computer program when executed by the processor further performs the steps of: if the response feedback duration is less than the preset response timeout time, recording the response feedback duration; if the response feedback time length is longer than the response overtime time, determining that packet loss occurs; when the sending times of the link keep-alive notification frame reach the preset times, calculating the average response feedback duration and the packet loss rate; and calculating the quality of the data link according to the average response feedback time length and the packet loss rate.
In one embodiment, the computer program when executed by the processor further performs the steps of: if the packet loss rate is greater than the maximum packet loss rate, judging that the target terminal is unreachable, and deleting the target terminal from the point-to-point route traversing table of the local terminal; if the packet loss rate is smaller than the maximum packet loss rate, adding average response feedback duration and the packet loss rate in a target terminal item of a point-to-point route traversing table of the local terminal; and updating the point-to-point route traversing table of the whole system according to the point-to-point route traversing table.
The computer readable storage medium is used for establishing a multi-path transmission link of the access control system through a computer program stored in the computer readable storage medium, determining a target service type of target service data to be transmitted, selecting a corresponding target data transmission link from the multi-path data transmission link according to the target service type, and finally transmitting the target service data in the access control system through the target data transmission link, so that transmission data of different service types are transmitted by using the corresponding transmission link, data delay is reduced, and the accuracy of real-time service functions of the access control system is improved.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for adjusting a transmission link of an access control system is characterized by comprising the following steps:
constructing a multi-path data transmission link of the access control system; the multi-path data transmission link is constructed based on different service types; the multi-path data transmission links are all transmission links with a mesh network structure;
determining a target service type of target service data to be transmitted;
selecting a corresponding target data transmission link from the multi-path data transmission links according to the target service type;
and transmitting the target service data in the access control system through the target data transmission link.
2. The method of claim 1, wherein constructing the multiple data transmission links of the access control system comprises:
acquiring a full-system point-to-point route crossing table of the access control system;
acquiring first sub transmission link quality between a local terminal and a transit node and second sub transmission link quality between the transit node and a target terminal from the point-to-point route crossing table of the whole system;
calculating the transmission link quality between the local terminal and the target terminal according to the first sub transmission link quality and the second sub transmission link quality;
determining network quality requirements corresponding to different service types;
and constructing the multi-path data transmission link according to the network quality requirements corresponding to the different service types and the transmission link quality.
3. The method of claim 2, wherein said constructing the multiple data transmission links based on the network quality requirements corresponding to the different traffic types and the transmission link quality comprises:
setting transmission quality threshold values adaptive to the different service types according to the network quality requirement;
extracting a target transmission link quality closest to the transmission quality threshold from the transmission link qualities between the local terminal and the target terminal;
determining a target transfer node corresponding to the target transmission link quality;
acquiring target transit node information of the target transit node, and acquiring local terminal information of the local terminal and target terminal information of the target terminal;
and writing the local terminal information, the target terminal information, the corresponding service type and the target transfer node information as routing entries into a service hierarchical transmission routing table of the whole-system mesh network equipment of the access control system, and constructing the multi-path data transmission link.
4. The method of claim 2, wherein after obtaining the system-wide peer-to-peer routing traversal table of the access control system, the method further comprises:
judging whether a direct transmission link directly connected with the target terminal exists or not based on the point-to-point route crossing table of the whole system;
if so, extracting the direct transmission link quality of the direct transmission link;
and if the quality of the direct transmission link is greater than the transmission quality threshold value suitable for different service types, writing local terminal information, target terminal information, no transfer node and corresponding service types as routing entries into a service hierarchical transmission routing table of the full-system mesh network equipment of the access control system, and constructing the multi-path data transmission link.
5. The method of claim 1, further comprising:
inquiring the routing information of a plurality of target terminals from a system-wide point-to-point routing traversing table of the access control system;
sending link keep-alive notification frames to the target terminals for a preset number of times according to the routing information of the target terminals, wherein the link keep-alive notification frames are used for triggering the target terminals to feed back link keep-alive response frames;
and if the link keep-alive response frame is received, acquiring response feedback time length of the link keep-alive response frame fed back by the target terminals, and calculating the quality of the data links of the target terminals according to the response feedback time length.
6. The method of claim 5, wherein the calculating the data link quality of the plurality of target terminals according to the response feedback duration comprises:
if the response feedback duration is less than the preset response timeout time, recording the response feedback duration;
if the response feedback time length is longer than the response overtime time, determining that packet loss occurs;
when the sending times of the link keep-alive notification frame reach the preset times, calculating the average response feedback time length and the packet loss rate;
and calculating the quality of the data link according to the average response feedback time length and the packet loss rate.
7. The method of claim 6, further comprising:
if the packet loss rate is greater than the maximum packet loss rate, judging that the target terminal is unreachable, and deleting the target terminal from a point-to-point route traversing table of a local terminal;
if the packet loss rate is smaller than the maximum packet loss rate, adding the average response feedback duration and the packet loss rate in a target terminal item of a point-to-point route traversing table of the local terminal;
and updating the system-wide point-to-point route traversing table according to the point-to-point route traversing table.
8. An access control system transmission link adjusting device, comprising:
the multi-path link construction module is used for constructing a multi-path data transmission link of the access control system; the multi-path data transmission link is constructed based on different service types; the multi-path data transmission links are all transmission links with a mesh network structure;
the service type determining module is used for determining the target service type of the target service data to be transmitted;
the transmission link selection module is used for selecting a corresponding target data transmission link from the multiple data transmission links according to the target service type;
and the data transmission module is used for transmitting the target service data in the access control system through the target data transmission link.
9. An access terminal device comprising a processor and a memory, said memory storing a computer program, characterized in that said processor implements the steps of the method according to any of claims 1 to 7 when executing said computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
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