CN103051359B - Method for binding slave nodes with master nodes and unit transformer power supply area distinguishing method - Google Patents
Method for binding slave nodes with master nodes and unit transformer power supply area distinguishing method Download PDFInfo
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- CN103051359B CN103051359B CN201110315105.2A CN201110315105A CN103051359B CN 103051359 B CN103051359 B CN 103051359B CN 201110315105 A CN201110315105 A CN 201110315105A CN 103051359 B CN103051359 B CN 103051359B
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Abstract
The invention provides a method for binding slave nodes with master nodes and a unit transformer power supply area distinguishing method; the unit transformer power supply area distinguishing method comprises the following steps that the slave nodes are bound to the master nodes, and the slave nodes report a meter archive to the master nodes; the master nodes actively report the meter archive to a main station; and the main station acquires the unit transformer power supply area to which the slave nodes belong through the meter archive. According to the method, when all the master nodes receive a same carrier information frame, the slave nodes can be bound to the master nodes effectively by comparing the relay times and signal intensity; in addition, the binding process of the slave nodes comprises a plurality of times of binding application, the master nodes with the most priority times are selected for binding, so that the carrying time-varying characteristic of a power line can be reliably responded to, and the unit transformer area distinguishing accuracy is greatly improved; networks are grouped according to the relay depth, so that carrier sense multiple access with collision avoidance (CSMA/CA) conflicts are effectively reduced, and the network communication efficiency is improved; and the networks quickly complete the binding of the slave nodes due to a follow-up binding strategy, so that the problem that the unit transformer area distinguishing speed is slow is effectively solved.
Description
Technical field
The present invention relates to power line communication technology field, particularly relate to the method from node binding host node and platform district differentiating method.
Background technology
The communication standard of AMRS community low-pressure section mainly contains power line carrier mode, power line carrier mode is a kind of method utilizing power line transmission signals, utilize low-tension network as signal channel using the AMRS that power line carrier mode is communication standard, any change is not done to electrical network itself, do not take any resource beyond electric power system, product copied by the collection that system gross investment is significantly less than other type domestic, and system cloud gray model is easily safeguarded, integrated cost is low.
Particularly, power line carrier communication refers to the transmission of settling signal on power line, interconnected between platform district, signal can influence each other, and such as, the signal that the node N1 in platform district 1 sends can be transferred in the concentrator D2 in platform district 2, equally, the signal that the node N2 in platform district 2 sends can be transferred in the concentrator D1 in platform district 1, so just cannot determine which platform district node N1 belongs to, cannot determine which platform district N2 belongs to equally.Above-mentioned district refers to the power supply area of a certain transformer, and concentrator refers to concentrator carrier module, is host node, and node N1, N2 are collector carrier module/carrier wave meter carrier module, for from node.And in fact can to distinguish platform district be accurately very important, such as, be conducive to raising and check meter success rate; Assist power department generally investigates for scene business and provides reliable reference; Adequately computer board district line loss provides foundation etc.But, do not have a kind of method can effectively determine from the platform district of node at present and belong to.
Summary of the invention
In view of this, the invention provides the method from node binding host node and platform district differentiating method, in order to solve the problem cannot effectively determining to belong to from the platform district of node.Technical scheme is as follows:
From a method for node binding host node, comprising:
(11) binding application sends binding application information frame from node, has at least a host node to receive this binding application information frame; The frame relay number of times receiving binding application information frame is put into respective binding application information with the signal strength signal intensity of the binding application information frame received and is replied frame by described each host node; Described each host node sends binding application information respectively to described binding application from node and replys frame;
(12) described binding application replys according to each binding application information received the signal strength signal intensity that each host node of frame recording receives the frame relay number of times binding application information frame and the binding application information frame received from node;
(13) described binding application receives according to each host node the signal strength signal intensity that the frame relay number of times of binding application information frame and institute receive binding application information frame from node and determines that optimum host node is applied in binding:
If the frame relay number of times that each host node receives binding application information frame is not identical, then the host node receiving the frame relay number of times of binding application information frame minimum is the optimum host node of binding application; If the frame relay number of times that each host node receives binding application information frame is identical, then the host node that the signal strength signal intensity of the binding application information frame received is maximum is the optimum host node of binding application;
(14) described binding application sends binding acknowledgement frame from node to the optimum host node of described binding application, makes binding application from node binding to the optimum host node of binding application.
Described step (13) also comprises before: described binding application sends binding application from node to each host node sending binding application information reply frame and replys acknowledgement frame, if described host node receives this frame, then perform step (13) and step (14); If described host node does not receive this frame in setting-up time, then repeat following steps by setting number of repetition:
Do not receive host node that binding application information replys acknowledgement frame the frame relay number of times receiving the binding application information frame that described binding application sends from node and the signal strength signal intensity of binding application information frame that receives are put into binding application information to reply frame and send binding application information reply frame to described binding application from node.
In described step (14), binding application is recorded this binding and is applied for optimum host node while node determines the optimum host node of binding application;
Also comprise before described step (14):
Repeat step (11) to (13), until the number of times that host node is the optimum host node of binding application is greater than set point number, terminate this binding;
Described binding application is bound from the host node that the preferential number of times of sensor selection problem is maximum, then performs step (14).
Before described binding application sends binding application information frame from node, also comprise host node to divide into groups to network according to the relaying degree of depth, binding and initiate by from host node group farthest, is finally initiate from the group that host node is nearest, and described binding application is from host node group farthest from node.
Described binding application between node and host node from node for monitor from node, described supervision from node adopt follow-up strategy follow binding application bind from node, its binding procedure is:
Described binding application monitors that also record receives the frame relay number of times of this frame and the signal strength signal intensity of this frame from mobile network to this frame after sending binding application information frame from node;
The handover number in the content frame of this frame and signal strength signal intensity is obtained after the binding application information reply frame that described supervision sends from mobile network to host node;
Described supervision, from mobile network to binding acknowledgement frame, judges whether any one in two conditions below meeting, if met, then follows binding application and applies for from the host node that node is bound to binding from node binding:
(1) the frame relay number of times that described supervision receives binding application information frame from node is less than the handover number obtained from the content frame of binding application information reply frame;
(2) the frame relay number of times that described supervision receives binding application information frame from node equals to reply from binding application information the handover number obtained the content frame of frame, and monitors that the signal strength signal intensity of the binding application information frame received from node is greater than and reply from binding application information the signal strength signal intensity obtained the content frame of frame;
If do not meet any one in above-mentioned two conditions, then described supervision enters monitoring or competition binding application status from node.
Described binding is powered on by host node, host node is changed MAC Address or initiates from the mode that node powers on.
Described transmission in a broadcast manner from node binds application information frame.
Described binding application information is replied frame and is adopted CSMA/CA mode to send.
A kind of platform district differentiating method, comprising: will from node binding to host node; Shown meter archives from node and reported host node; Described table meter archives are reported main website by host node, and described host node has unique mailing address, and namely the table meter archives that it reports belong to the platform district at this host node place; Main website receives described table meter archives just can learn the described platform district belonged to from node and described table meter archives.
Method from node binding host node provided by the invention and and platform district differentiating method, when each host node receives same information frame, by receiving the frame relay number of times of same information frame and the comparison of signal strength signal intensity to each host node, can effectively by from node binding to host node, the main website of AMRS just can determine the platform district belonged to from node by the table meter archives of host node active reporting.In addition, from the binding procedure of node, include binding procedure to apply repeatedly, the host node binding selecting preferential number of times maximum, therefore, it is possible to tackle the characteristic of power line carrier time variation reliably, makes the accuracy rate of trivial point of platform greatly improve; Divide into groups to network according to the relaying degree of depth, effective CSMA/CA that must reduce conflicts, and improves network communication efficiency; Following binding strategy makes network complete rapidly the binding of node, efficiently solves the problem that the trivial component velocity of platform is slow.
Accompanying drawing explanation
The flow chart of the platform district differentiating method of the power line communication that Fig. 1 provides for the embodiment of the present invention one;
The flow chart of the method from node binding to host node that Fig. 2 provides for the embodiment of the present invention one;
Fig. 3 receives the schematic diagram of same information frame process for many host nodes that the embodiment of the present invention one provides;
Fig. 4 receives the schematic diagram of same information frame process for many host nodes that the embodiment of the present invention one provides;
The realization that Fig. 5 provides for the embodiment of the present invention one powers on from node and initiates the flow chart of binding;
The flow chart of the platform district differentiating method of the power line communication that Fig. 6 provides for the embodiment of the present invention two;
The flow chart of the method from node binding to host node that Fig. 7 provides for the embodiment of the present invention two;
The network packet that Fig. 8 provides for the embodiment of the present invention two and binding procedure schematic diagram;
Fig. 9 initiates the flow chart of binding for host node that the embodiment of the present invention two provides powers on;
The flow chart of the platform district differentiating method of the power line communication that Figure 10 provides for the embodiment of the present invention three;
The flow chart of the method from node binding to host node that Figure 11 provides for the embodiment of the present invention three;
The supervision that Figure 12 provides for the embodiment of the present invention three follows binding procedure schematic diagram from node;
The flow chart of the host node change MAC Address initiation binding that Figure 13 provides for the embodiment of the present invention three.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one
See Fig. 1, the flow chart of the trivial point of embodiment of the method for the platform for power line communication of the present invention, comprising:
(11) will from node binding to host node;
(12) shown meter archives from node and reported host node;
(13) host node is by table meter archives active reporting to main website, and host node has unique mailing address, and namely the table meter archives that it reports belong to the platform district at this host node place;
(14) main website receives table meter archives and just can learn the platform district belonged to from node and table meter archives.
Because main website has from address of node information and platform district material matches information, therefore main website just can obtain platform district attaching information from node according to the table meter archives that host node reports.
Process from node binding to host node is referred to the flow chart of Fig. 2, binding procedure comprises:
S101: binding application sends binding application information frame from node;
S102: the frame relay number of times receiving binding application information frame is put into binding application information reply frame with the signal strength signal intensity of the binding application information frame received by the host node receiving binding application information frame, host node is to binding application from node transmission binding application information reply frame;
S103: binding application is replied frame recording host node from node according to the binding application information received and received the frame relay number of times of binding application information frame and the signal strength signal intensity of the binding application information frame received;
S104: binding application sends binding application and replys acknowledgement frame from node to host node;
S105: from node, binding application judges that the binding application information whether receiving other host node in setting-up time replys frame, if so, then proceed to step S103; If not, then step S106 and subsequent step is performed;
S106: binding application receives according to each host node the signal strength signal intensity that the frame relay number of times of binding application information frame and institute receive binding application information frame from node and judges to bind optimum host node:
S107: binding application sends binding acknowledgement frame from node to the optimum host node of binding, makes binding application from node binding to the optimum host node of binding.
Binding application from node judges to bind optimum host node according to as: if the frame relay number of times that each host node receives binding application information frame is not identical, then receive the minimum host node of the frame relay number of times of binding application information frame for binding optimum host node; If the frame relay number of times that each host node receives binding application information frame is identical, then the host node that the signal strength signal intensity of the binding application information frame received is maximum is the optimum host node of binding.Such as, You Lianggetai district, signal can seal in the other side mutually, and platform district 1 has three from node, and platform district 2 has four from node, information frame is sent from node N11, after signal is sent by N11, first warp is from node N12 and N13, then arrives host node 1, after transformer 1 and transformer 2 are decayed, arrive host node 2, finally arrive from node N21, N23, N22 and N24.Host node 1 and host node 2 all receive the same information frame that N11 sends, suppose that the frame relay number of times that host node 1 receives information frame is R1, the frame relay number of times that host node 2 receives information frame is R2, the signal strength signal intensity that host node 1 receives information frame is S1, the signal strength signal intensity that host node 2 receives information frame is S2, refer to Fig. 3, in Fig. 3, R1=1, R2=2, now, host node 1 and host node 2 are not the information that same handover number receives, signal strength signal intensity does not have comparativity, due to R1 < R2, can judge that N11 belongs to host node, namely N11 will be tied to host node 1.Refer to Fig. 4, in Fig. 4, R1=2, with handover number, R2=2, now cannot judge which node N11 belongs to, but, because transformer has extremely strong attenuation characteristic for the signal after carrier modulation, S1 > S2, can judge that N11 belongs to host node 1 according to S1 > S2, namely N11 will be tied to host node 1.
Also comprise before described step S105: judge whether host node receives binding application and reply acknowledgement frame from the binding application of node transmission in setting-up time, if received, then performs step S105 and subsequent step; If do not received, then repeat following steps by setting number of repetition: the frame relay number of times receiving the binding application information frame that binding application sends from node, the signal strength signal intensity of binding application information frame that receives are put into binding application information and replied frame by host node, and to bind application and sends binding application information reply frame from node.In the present embodiment, setting number of repetition is 3 times.
In the present embodiment, binding application sends binding application information frame in a broadcast manner from node, and host node adopts CAMA/CA mode to send binding application information and replys frame.
In the present embodiment, binding is that the mode by powering on from node is initiated, and when powering on from node, might not receive the beginning bind command that host node sends, so need initiatively to initiate bind request from node.If main and subordinate node powers on simultaneously, the binding being later than host node is needed to dismiss order from node initiation bind request; Power on from node if multiple simultaneously, need to do conflict avoiding between node.
The process of binding application is initiated as shown in Figure 5 by the mode powered on from node:
(101) power on from node;
(102) time delay T
1+ Δ t
1;
(103) check that whether network is idle, if not, then perform step (104); If so, then step (105) is performed;
(104) random delay Δ t
1, perform step (103) and subsequent step;
(105) start to perform binding procedure.
The present embodiment does not limit mode that binding initiates for power on from node, binds to power on by host node or the mode of host node more change of address is initiated yet.
Because power line network is public same transmission medium, each node can not send information at synchronization, therefore in the present embodiment, adopts CSMA/CA to reduce network conflict.
In the platform district differentiating method of power line communication provided by the invention, when each host node receives same information frame, by the comparison of the signal strength signal intensity of the frame relay number of times and this frame that host node are received to same information frame, can effectively by from node binding to host node, main website just can determine to belong to from the platform district of node by the table meter archives of host node active reporting.
Embodiment two
As shown in Figure 6, platform district differentiating method comprises the following steps the flow chart of the platform district differentiating method of the power line communication that the embodiment of the present invention two provides:
(21) will from node binding to host node;
(22) shown meter archives from node and reported host node;
(23) host node is by described table meter archives active reporting to main website, and described host node has unique mailing address, and namely the table meter archives that it reports belong to the platform district at this host node place;
(24) main website receives described table meter archives and just can learn the described platform district belonged to from node and described table meter archives.
Because main website has from address of node information and platform district material matches information, therefore main website just can obtain platform district attaching information from node according to the table meter archives that host node reports.
In above-mentioned steps, the process from node binding to host node is referred to the flow chart of Fig. 7, binding procedure comprises:
S201: binding application sends binding application information frame from node;
S202: the frame relay number of times receiving binding application information frame is put into binding application information reply frame with the signal strength signal intensity of the binding application information frame received by the host node receiving binding application information frame, host node is to binding application from node transmission binding application information reply frame;
S203: binding application is replied frame recording host node from node according to the binding application information received and received the frame relay number of times of binding application information frame and the signal strength signal intensity of the binding application information frame received;
S204: binding application sends binding application and replys acknowledgement frame from node to host node;
S205: from node, binding application judges that the binding application information whether receiving other host node in setting-up time replys frame, if so, then proceed to step S203; If not, then step S206 and subsequent step is performed;
S206: binding application receives according to each host node the signal strength signal intensity that the frame relay number of times of binding application information frame and institute receive binding application information frame from node and judges that binding is applied for optimum host node and record this binding applying for optimum host node;
S207: judge whether that a host node is that binding applies for that the number of times of optimum host node is greater than set point number, if so, then perform step S208 and subsequent step; If not, then step S201 is proceeded to;
S208: from the binding that the preferential number of times of sensor selection problem is maximum, binding application applies for that optimum host node is that the final optimum host node of binding is bound;
S209: binding application sends binding acknowledgement frame from node to the optimum host node of this final binding, makes binding application from node binding to the optimum host node of this binding.
Binding application from node judges to bind the optimum host node of application according to as: if the handover number that each host node receives binding application information frame is not identical, then receives the minimum host node of the frame relay number of times of binding application information frame for binding and apply for optimum host node; If the frame relay number of times that each host node receives binding application information frame is identical, then the host node that the signal strength signal intensity of the binding application information frame received is maximum is the optimum host node of binding application.
Further, if repeatedly send binding application information frame from node, then select the maximum host node of preferential number of times to bind, the host node that namely preferential number of times is maximum is the optimum host node of binding.
Also comprise before described step S205: judge whether host node receives binding application and reply acknowledgement frame from the binding application of node transmission, if received, then performs step S205 and subsequent step; If do not received, then repeat following steps by setting number of repetition: do not receive host node that binding application information replys acknowledgement frame and the frame relay number of times receiving the binding application information frame that binding application sends from node, the signal strength signal intensity of binding application information frame that receives are put into binding application information and replied frame, and send binding application information reply frame to described binding application from node.In the present embodiment, setting number of repetition is 3 times.
In the present embodiment, binding application sends binding application information frame in a broadcast manner from node, and host node adopts CAMA/CA mode to send binding application information and replys frame.
Because power line network is public same transmission medium, each node can not send information at synchronization, therefore CSMA/CA is usually adopted to reduce network conflict, but because the speed ratio of power line carrier communication is lower, CAMS/CA efficiency when nodes is larger is very low simultaneously, therefore adopts extra network packet to coordinate CSMA/CA to reduce network conflict in the present embodiment.The present embodiment divides into groups to network according to the relaying degree of depth, refer to Fig. 8, Fig. 8 is network packet and from node binding process schematic, suppose that host node x is 6 grades of junction networks, host node x will be divided into 6 grades network, binding and initiate by from host node x group N6 farthest, is then N5, N4, N3, N2 successively, is finally to initiate from the group N1 that host node x is nearest.Like this CSMA/CA number of collisions is reduced by 6 times effectively, thus improve binding speed.
In the present embodiment, binding is that the mode powered on by host node is initiated, and after host node powers on, needs first to remove network bound information, and then sends bind command again.If multiple host node powers on simultaneously, need between host node to do conflict avoiding.
By host node power on initiate binding process as shown in Figure 9:
(201) power on from node;
(202) time delay T
2+ Δ t
2;
(203) check that whether network is idle, if so, then perform step (204); If not, then step (207) is performed;
(204) send network in the mode repeatedly broadcasted and dismiss order;
(205) with the mode repeatedly broadcasted send start binding;
(206) system enters normal condition;
(207) random delay Δ t
2, perform step (203) and subsequent step.
The initiation mode that the present embodiment does not limit binding is that host node powers on, and binding, also by the initiation that powers on from node, is also more initiated change of address by host node.If the network bound that host node powers on or host node change MAC Address is initiated, first network carries out network packet, binds and first initiates by from host node group farthest, is finally to initiate from the group that host node is nearest.
In the platform district differentiating method of power line communication provided by the invention, when each host node receives same information frame, by each host node is received same information frame frame relay number of times and receive the comparison of the signal strength signal intensity of information frame, can effectively by from node binding to host node, main website just can determine to belong to from the platform district of node by the table meter archives of host node active reporting.In addition, from the binding procedure of node, include binding procedure to apply repeatedly, the host node binding selecting preferential number of times maximum, therefore, it is possible to tackle the characteristic of power line carrier time variation reliably, makes the accuracy rate of trivial point of platform greatly improve; Divide into groups to network according to the relaying degree of depth, effective CSMA/CA that must reduce conflicts, and improves network communication efficiency.
Embodiment three
As shown in Figure 10, platform district differentiating method comprises the following steps the flow chart of the platform district differentiating method of the power line communication that the embodiment of the present invention three provides:
(31) will from node binding to host node;
(32) shown meter archives from node and reported host node;
(33) described table meter archives are reported main website by host node, and described host node has unique mailing address, and namely the table meter archives that it reports belong to the platform district at this host node place;
(34) main website receives described table meter archives and just can learn the described platform district belonged to from node and described table meter archives.
Because main website has from address of node information and platform district material matches information, therefore main website just can obtain platform district attaching information from node according to the table meter archives that host node reports.
In above-mentioned steps, the process from node binding to host node is referred to the flow chart of Figure 11, binding procedure comprises:
S301: binding application sends binding application information frame from node;
S302: the frame relay number of times receiving binding application information frame is put into binding application information reply frame with the signal strength signal intensity of the binding application information frame received by the host node receiving binding application information frame, host node is to binding application from node transmission binding application information reply frame;
S303: binding application is replied frame recording host node from node according to the binding application information received and received the frame relay number of times of binding application information frame and the signal strength signal intensity of the binding application information frame received;
S304: binding application sends binding application and replys acknowledgement frame from node to host node;
S305: from node, binding application judges that the binding application information whether receiving other host node in setting-up time replys frame, if so, then proceed to step S303; If not, then step S306 and subsequent step is performed;
S306: binding application receives according to each host node the signal strength signal intensity that the frame relay number of times of binding application information frame and institute receive binding application information frame from node and judges that binding is applied for optimum host node and record this binding applying for optimum host node;
S307: judge whether that a host node is that binding applies for that the number of times of optimum host node is greater than set point number, if so, then perform step S308 and subsequent step; If not, then step S301 is proceeded to;
S308: from the binding that the preferential number of times of sensor selection problem is maximum, binding application applies for that optimum host node is that the final optimum host node of binding is bound;
S309: binding application sends binding acknowledgement frame from node to the optimum host node of this final binding, makes binding application from node binding to the optimum host node of this binding.
In the present embodiment, binding application between node and host node from node for monitoring from node, monitor to adopt from node and follow binding strategy and complete binding, its implementation procedure is as follows:
A301: monitor from node and be in monitored state, binding application sends binding application information frame from node, monitors that record receives frame relay number of times and the signal strength signal intensity of this frame from mobile network to binding application information frame;
A302: host node replys frame to binding application from node transmission binding application information, monitors from mobile network to this frame, obtains the handover number in the content frame of binding application information reply frame and signal strength signal intensity;
A303: when monitoring the binding acknowledgement frame sent to binding application from node to host node from mobile network, monitor from node and judge whether that following binding application binds from node, its decision condition is:
Decision condition 1: monitor that receiving from node the frame relay number of times binding application information frame is less than the handover number obtained from the content frame of this host node binding application information reply frame;
Decision condition 2: monitor that receiving from node the frame relay number of times binding application information frame equals to reply from this host node binding application information the handover number obtained the content frame of frame, and monitor that the signal strength signal intensity of the binding application information frame received from node is greater than the signal strength signal intensity obtained from the content frame of this host node binding application information reply frame;
If meet any one in above-mentioned decision condition, then monitor from node and follow binding application from node binding to binding application from the host node that node is bound, if do not meet any one in above-mentioned decision condition, then monitor from node and continue to enter monitored state or competition binding application status.
Above-mentioned supervision is the handover number that host node receives binding application information frame from the handover number that node obtains, and monitors that the signal strength signal intensity obtained from node is the signal strength signal intensity of the binding application information frame that host node receives.
Also comprise before described step S305: judge whether host node receives binding application and reply acknowledgement frame from the binding application of node transmission, if received, then performs step S305 and subsequent step; If do not received, then repeat following steps by setting number of repetition: do not receive host node that binding application information replys acknowledgement frame and the frame relay number of times receiving the binding application information frame that binding application sends from node, the signal strength signal intensity of binding application information frame that receives are put into binding application information and replied frame, and send binding application information reply frame to described binding application from node.In the present embodiment, setting number of repetition is 3 times.
In the present embodiment, binding application sends binding application information frame in a broadcast manner from node, and host node adopts CAMA/CA mode to send binding application information and replys frame.
In the present embodiment, extra network packet is adopted to coordinate CSMA/CA to reduce network conflict, before sending binding application information frame from node, first network carries out network packet according to the relaying degree of depth, bind and initiate from from host node group farthest, namely from host node farthest from node for binding application is from node.Draw near from the binding procedure of node, binding application all can monitor its binding information from all between node and host node from node, if determine the binding condition meeting oneself, will follow and bind application node and be tied on its host node.Illustrate the process monitoring and follow binding from node below, refer to Figure 12, Figure 12 is the binding procedure schematic diagram from node, and binding application is initiated by from node N6, and namely N6 is for binding application is from node.Table 1 is the situation that each node receives binding application information frame.
Table 1
| Node number | Information frame handover number | Information signal frame intensity |
| Host node 1 | 6 | 1000 |
| N1 | 5 | 1200 |
| N2 | 4 | 800 |
| N3 | 3 | 1500 |
| N4 | 2 | 1700 |
| N5 | 1 | 600 |
| N31 | 5 | 500 |
| N41 | 6 | 1500 |
| N51 | 7 | 1600 |
| Host node 2 | 7 | 200 |
| N21 | 7 | 150 |
The frame relay number of times that host node 1 receives binding application information frame is R1=6, the signal strength signal intensity receiving binding application information frame is S1=1000, the frame relay number of times that host node 2 receives binding application information frame is R2=7, the signal strength signal intensity receiving binding application information frame is S2=700, due to R1 < R2, according to the basis for estimation of the optimum host node of binding, N6 is tied to host node 1.
Binding application is from adopting follow-up strategy to bind from node between node N6 and the host node 1 of its binding.The frame relay number of times receiving binding application information frame from node N1 is R
1=5, according to the decision condition of following binding, R
1< R1, follow from node N1 and be tied to host node 1 from node N6, same from node N1 from node N2, N3, N4, N5, N31, the frame relay number of times receiving binding application information frame is all less than R1, therefore follows from node N2, N3, N4, N5, N31 and is tied to host node 1 from node N6.For for node N41, the frame relay number of times receiving binding application information frame is R
41=6, the signal strength signal intensity of the binding application information frame received is S
41=1500, according to the decision condition of following binding, due to R
41=R1 and S
41> S1, follows from node N41 and binds host node 1 from node N6.The frame relay number of times receiving binding application information frame from node N51 is R
51=7, due to R
51> R1, according to the decision condition of following binding, can not bind from node N51.For for node N21, R
21=7, S
21=150, due to R
21> R1, according to the decision condition of following binding, can not bind from node N21.
Table 2
In the present embodiment, binding is initiated by the mode of host node change MAC Address.Power line carrier communication relies on the access of MAC Address realizing route, so after the change of host node MAC Address, needs to remove network bound information, and then carry out network reconfiguration.
The process of binding is initiated as shown in figure 13 by host node change MAC Address:
(301) host node address is set;
(302) judge whether address is changed, if so, then perform step (303) and subsequent step; If not, then step (306) is performed;
(303) check that whether network is idle, if so, then perform step (304) and subsequent step; If not, then step (307) is performed;
(304) send network in the mode repeatedly broadcasted and dismiss order;
(305) with the mode repeatedly broadcasted send start binding;
(306) system enters normal condition;
(307) random delay Δ t
3, perform step (303) and subsequent step.
The initiation mode that the present embodiment does not limit binding is host node change MAC Address, and binding, also by the initiation that powers on from node, also to power on initiation by host node.If the network bound that host node powers on or host node change MAC Address is initiated, first network carries out network packet, binds and first initiates by from host node group farthest, is finally to initiate from the group that host node is nearest.
In the platform district differentiating method of power line communication provided by the invention, when each host node receives same information frame, by the frame relay number of times that each host node received to same information frame and the comparison of the signal strength signal intensity of information frame received, can effectively by from node binding to host node, main website just can determine to belong to from the platform district of node by the table meter archives that host node reports.In addition, from the binding procedure of node, include binding procedure to apply repeatedly, the host node binding selecting preferential number of times maximum, therefore, it is possible to tackle the characteristic of power line carrier time variation reliably, makes the accuracy rate of trivial point of platform greatly improve; Divide into groups to network according to the relaying degree of depth, effective CSMA/CA that must reduce conflicts, and improves network communication efficiency; Following binding strategy makes network complete rapidly the binding of node, efficiently solves the problem that the trivial component velocity of platform is slow.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. power-line carrier communication system is from a method for node binding host node, it is characterized in that, comprising:
(11) binding application sends binding application information frame from node, has at least a host node to receive this binding application information frame; The frame relay number of times receiving binding application information frame is put into respective binding application information with the signal strength signal intensity of the binding application information frame received and is replied frame by described each host node; Described each host node sends binding application information respectively to described binding application from node and replys frame;
(12) described binding application replys according to each binding application information received the signal strength signal intensity that each host node of frame recording receives the frame relay number of times binding application information frame and the binding application information frame received from node;
(13) the frame relay number of times that described binding application receives binding application information frame from node according to each host node is determined to bind optimum host node with the signal strength signal intensity of the binding application information frame received:
If the frame relay number of times that each host node receives binding application information frame is not identical, then the host node receiving the frame relay number of times of binding application information frame minimum is the optimum host node of binding; If the frame relay number of times that each host node receives binding application information frame is identical, then the host node that the signal strength signal intensity of the binding application information frame received is maximum is the optimum host node of binding;
(14) described binding application sends binding acknowledgement frame from node to the optimum host node of described binding, makes binding application from node binding to the optimum host node of binding;
Wherein, described step (13) also comprises before: described binding application sends binding application from node to each host node sending binding application information reply frame and replys acknowledgement frame, if described host node receives this frame, then perform step (13) and step (14); If described host node does not receive this frame in setting-up time, then repeat following steps by setting number of repetition:
Do not receive host node that binding application information replys acknowledgement frame the handover number receiving the binding application information frame that described binding application sends from node and the signal strength signal intensity of binding application information frame that receives are put into binding application information to reply frame and send binding application information reply frame to described binding application from node;
In described step (14), binding application is recorded this binding and is applied for optimum host node while node determines the optimum host node of binding application;
Also comprise before described step (14):
Repeat step (11) to (13), until host node is the number of times binding optimum host node be greater than set point number, terminate this binding;
Described binding application is bound from the host node that the preferential number of times of sensor selection problem is maximum, then performs step (14);
Before described binding application sends binding application information frame from node, also comprise host node to divide into groups to network according to the relaying degree of depth, binding and initiate by from host node group farthest, is finally initiate from the group that host node is nearest, and described binding application is from host node group farthest from node;
Described binding application between node and host node from node for monitor from node, described supervision from node adopt follow-up strategy follow binding application bind from node, its binding procedure is:
Described binding application monitors that also record receives the frame relay number of times of this frame and the signal strength signal intensity of this frame from mobile network to this frame after sending binding application information frame from node;
The handover number in this content frame and signal strength signal intensity is obtained after the binding application information reply frame that described supervision sends from mobile network to host node;
Described supervision, from mobile network to binding acknowledgement frame, judges whether any one in two conditions below meeting, if met, then follows binding application and applies for from the host node that node is bound to binding from node binding:
(1) the frame relay number of times that described supervision receives binding application information frame from node is less than the handover number obtained from the content frame of this host node binding application information reply frame;
(2) the frame relay number of times that described supervision receives binding application information frame from node equals to reply from this host node binding application information the handover number obtained the content frame of frame, and monitors that the signal strength signal intensity of the binding application information frame received from node is greater than and reply from this host node binding application information the signal strength signal intensity obtained the content frame of frame;
If do not meet any one in above-mentioned two conditions, then described supervision enters monitoring or competition binding application status from node.
2. method according to claim 1, is characterized in that, described binding is powered on by host node, host node is changed MAC Address or initiates from the mode that node powers on.
3. method according to claim 1, is characterized in that, described transmission in a broadcast manner from node binds application information frame.
4. method according to claim 1, is characterized in that, described binding application information is replied frame and adopted CSMA/CA mode to send.
5. a Zhong Tai district differentiating method, is characterized in that, comprising:
Utilize as the method from node binding host node in Claims 1-4 as described in any one will from node binding to host node;
Shown meter archives from node and reported host node;
Table meter archives are reported main website by host node, and described host node has unique mailing address, and namely the table meter archives that it reports belong to the platform district at this host node place;
Main website receives described table meter archives just can learn the described platform district belonged to from node and described table meter archives.
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| CN106936473B (en) * | 2015-12-30 | 2020-02-14 | 杭州华为数字技术有限公司 | Method and related device for grouping power line communication nodes |
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