CN104767664B - Method, apparatus and system of a kind of ring-type communication network increase and decrease from node - Google Patents
Method, apparatus and system of a kind of ring-type communication network increase and decrease from node Download PDFInfo
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Abstract
Method, apparatus and system the invention discloses a kind of increase and decrease of ring-type communication network from node, this method include：Host node determines the position to be added that network is added from node according to the feedback frame changed in all feedback frames from node received, and according to the position, changes the corresponding relation of logical identifier and network identity；The coded frame of network identity is carried to be added sent from node, the instruction network identity to be added for from node changing the network identity of itself to carry in coded frame.On the one hand, due to not needing special inquiry frame, therefore extra bandwidth cost can be reduced；On the other hand, due to being the information for the position that feedback frame obtains ingress addition network to be added, only a communication cycle is needed to complete the addition network from node, thus it is guaranteed that packet loss, net synchronization capability do not decline communication system during node is increased and decreased, communication efficiency does not reduce.
Description
Technical field
The present invention relates to the communication technology, more particularly to a kind of increase and decrease of ring-type communication network from the method, apparatus of node and is
System.
Background technology
In the industrial communication systems for mission critical applications, because availability and reliability are key issues, therefore,
Communication network redundancy is the key character of the industrial communication systems of requirement high availability.Relative to the superfluous of Parallel Redundancy Protocol etc
Remaining scheme, ring topology can provide more inexpensive technical scheme.In loop network, each node, which has, is connected to two phases
Two COM1s of neighbors, therefore the loop network can operate on either one or two direction and resist link so as to provide
The elasticity of failure.
However, in some commercial Applications, such as uninterrupted power source, except require high availability and high communication efficiency with
Outside, increase and decrease node that can be random in system operation is also required, to facilitate failture evacuation or change new node.Saved in increase and decrease
During point, it is desirable to which the performance of communication system can not reduce, including packet loss, net synchronization capability do not decline, communication efficiency does not drop
It is low.
Ring-type communication network is an enclosed construction, increases and decreases in system operation from node, will destroy this annular
Structure, it is a huge challenge for the existing real-time ethernet using ring topology.Such as EtherCAT, its communication
Efficiency is very high, and when an open-loop wherein netting twine, it will inevitably lose the data of at least one communication cycle；
In the case of certain, such as disconnect netting twine position be exactly host node with from the junction of node when, communication cycle can be caused to increase by one
Times, greatly reduce communication efficiency；
In addition, how host node identifies that the node newly added is also a problem in the process of running.It is highly usable, seamless
The ring-type communication network of redundancy（High-availability Seamless Redundancy, HSR）Can solve packet to lose
The problem of mistake, but the forwarding mechanism of ring-type communication network make it that its communication efficiency is more low, because each node is receiving number
It is required for first judging the type of the packet during according to bag to determine to forward or allow packet to be stopped with regard to this, in 100Mbit/s
Ethernet speed under, packet by the time delay of each node at least in more than 2us, when node is more, communication week
Phase will be elongated up to being difficult to receive therewith, therefore ring-type communication network is only applicable to the application scenarios such as the automation of transformation substations, and right
The higher application of requirement of real-time is then helpless, likewise, for how to identify the node newly added in the process of running,
HSR is also without the corresponding method of proposition.
At present, also it is applied to the industrial communication systems for mission critical applications without the method for suitably increasing and decreasing node
Scene.
The content of the invention
The embodiment of the present invention provides method, apparatus and system of a kind of ring-type communication network increase and decrease from node, to realize
When failture evacuation or replacing new node, the performance of communication system does not reduce.
A kind of ring-type communication network increase and decrease is from the method for node, and the ring-type communication network is in initialization, host node pair
Each network node being linked in sequence carries out sequential encoding, establishes the network identity of all-network node and the corresponding pass of logical identifier
System；Methods described includes：
Host node determines to be added from node according to the feedback frame changed in all feedback frames from node received
Add network position, it is described it is to be added from node forward other from the feedback frame of node when, change the feedback frame；
Host node changes the corresponding relation according to the position determined；
Host node is described to be added to the coded frame to be added that network identity is carried from node transmission, instruction
The network identity of itself is revised as the network identity that is carried in the coded frame from node and sends feedback frame, the coded frame
The network identity of middle carrying is that host node obtains from the amended corresponding relation.
A kind of ring-type communication network increase and decrease is from the method for node, and the ring-type communication network is in initialization, host node pair
Each network node being linked in sequence carries out sequential encoding, establishes the network identity of all-network node and the corresponding pass of logical identifier
System；Methods described includes：
It is to be added from node when forwarding other from the feedback frame of node, change the feedback frame, and
Indicate that host node according to the feedback frame changed in all feedback frames from node received, determines described to be added
The position that network is added from node, and change the corresponding relation；
The coded frame to be added that carry network identity that host node transmission is received from node, by the network of itself
Mark is revised as the network identity carried in the coded frame, and sends feedback frame to host node, is carried in the coded frame
Network identity is that host node obtains from amended corresponding relation.
A kind of host node in ring-type communication network, the host node include：
Corresponding relation establishes unit, for when the ring-type communication network initializes, to each network section being linked in sequence
Point carries out sequential encoding, establishes the network identity of all-network node and the corresponding relation of logical identifier；
Determining unit, for the feedback frame changed in all feedback frames from node according to reception, it is determined that described treat
Add from node add network position, it is described it is to be added from node forward other from the feedback frame of node when, modification
The feedback frame；
Corresponding relation changes unit, for according to the position determined, changing the corresponding relation；
Transmitting element, for carrying the coded frame of network identity to be added sent from node, the coding
The network identity carried in frame is that host node obtains from the amended corresponding relation；
Indicating member, for indicating the described to be added network identity of itself is revised as in the coded frame from node
The network identity of carrying simultaneously sends feedback frame.
In a kind of ring-type communication network from node, it is described to include from node：
Unit is changed, for when forwarding other from the feedback frame of node, changing the feedback frame；
Indicating member, for indicating host node according to the feedback frame changed in all feedback frames from node received,
The position to be added that network is added from node is determined, and changes the corresponding relation of logical identifier and network identity；
Receiving unit, for receiving the coded frame for carrying network identity of host node transmission, by the network identity of itself
It is revised as the network identity carried in the coded frame, the network identity carried in the coded frame is host node from amended
Obtained in the corresponding relation；
Transmitting element, for sending feedback frame to host node.
A kind of ring-type communication network system, including：It is host node, to be added from node and at least one from node, wherein：
The host node, in the ring-type communication network system initialization, to each network node being linked in sequence
Sequential encoding is carried out, establishes the network identity of all-network node and the corresponding relation of logical identifier；According to receive it is all from
The feedback frame changed in the feedback frame of node, determine the position to be added that network is added from node；According to what is determined
The position, change the corresponding relation；To the coded frame to be added that network identity is carried from node transmission；It is described
The network identity carried in coded frame obtains from the amended corresponding relation；
It is to be added from node, for when forwarding other from the feedback frame of node, changing the feedback frame, receive and carry
There is the coded frame of network identity, the network identity that the network identity of itself is revised as carrying in the coded frame, and send anti-
Present frame.
A kind of host node in ring-type communication network, including processor and transceiver interface, wherein：
Processor, in the ring-type communication network system initialization, being carried out to each network node being linked in sequence
Sequential encoding, establish the network identity of all-network node and the corresponding relation of logical identifier；Foundation is received by transceiver interface
All feedback frames from node in the feedback frame changed, determine the position to be added that network is added from node；According to
According to the position of determination, the corresponding relation is changed；Carried by transceiver interface to be added sent from node
The coded frame of network identity；The network identity carried in the coded frame obtains from the amended corresponding relation.
In a kind of ring-type communication network from node, including processor and transceiver interface, wherein：
Processor, for when forwarding other from the feedback frame of node by transceiver interface, changing the feedback frame, and refer to
Show host node according to the feedback frame changed in all feedback frames from node received, determine described to be added add from node
Enter the position of network, and change the corresponding relation；The coded frame for carrying network identity is received by transceiver interface, by itself
Network identity be revised as the network identity carried in the coded frame, and pass through transceiver interface and send feedback frame, the coding
The network identity carried in frame is that host node obtains from amended corresponding relation.
The embodiment of the present invention provides method, apparatus and system of a kind of ring-type communication network increase and decrease from node, and host node is
According to the feedback frame changed, the position to be added that network is added from node is determined, and then according to described in the modification of the position
Corresponding relation, and carry the coded frame of network identity to be added sent from node so that obtained in host node to be added
From the network identity of node and the corresponding relation of logical identifier, while it is to be added also obtain network identity from node, because
And realize and successfully add ring-type communication network, on the one hand, due to not needing special inquiry frame, therefore relative to existing skill
Art, it is possible to reduce extra bandwidth cost；On the other hand, because this method is to use the feedback frame acquisition in system to be added
From node add network and add network position information, it is only necessary to a communication cycle can be completed to be added from node
Addition network, thus it is guaranteed that packet loss, net synchronization capability do not decline communication system during node is increased and decreased, communicate effect
Rate does not reduce.
Brief description of the drawings
Fig. 1 is the structural representation of ring-type communication network provided in an embodiment of the present invention；
Fig. 2 is the data flow schematic diagram provided in an embodiment of the present invention from node；
Method flow diagrams of the Fig. 3 for the ring-type communication network increase and decrease that the embodiment of the present invention one provides from node；
Fig. 4 is the schematic network structure after the completion of the initialization that the embodiment of the present invention two provides；
Fig. 5 be the embodiment of the present invention two provide it is new from node enter loop when schematic network structure；
Fig. 6 is the addition of the offer of the embodiment of the present invention two newly from the data flow schematic diagram of node；
Fig. 7 is the addition of the offer of the embodiment of the present invention two newly from the structural representation of the network after node；
Fig. 8 is the schematic network structure to be exitted network from node that the embodiment of the present invention two provides；
Method flow diagrams of the Fig. 9 for the ring-type communication network increase and decrease that the embodiment of the present invention three provides from node；
Figure 10 is the host node structural representation in the ring-type communication network that the embodiment of the present invention four provides；
Figure 11 is from node structure schematic diagram in the ring-type communication network that the embodiment of the present invention five provides；
Figure 12 is the ring-type communication network system structure diagram that the embodiment of the present invention six provides；
Figure 13 is the host node structural representation in the ring-type communication network that the embodiment of the present invention seven provides；
Figure 14 is from node structure schematic diagram in the ring-type communication network that the embodiment of the present invention eight provides.
Embodiment
The embodiment of the present invention provides method, apparatus and system of a kind of ring-type communication network increase and decrease from node, to realize
When failture evacuation or replacing new node, the performance of communication system does not reduce.
In order to clearly demonstrate the scheme of the embodiment of the present invention, first below to preferable ring-type communication network in the present invention
Illustrate.
As shown in figure 1, being the structural representation of the preferable ring-type communication network in the present invention, included at least in the network
One host node and at least one from node, host node and each respectively possesses from node two network interface A, B, suitable by straight through cable
Sequence is connected, and network interface Bs of each network interface A from node with a upper website is connected, and now, whole network is into an annular.
System electrification, after host node completes self-test, the coding and sorting order to network is initiated by network interface B, is each from node
Again one network identity of order-assigned（ID）Number.The network interface B of host node sends the network ID coded frame of carrying, is not compiled again
Code from node receive coded frame when, the network ID of itself is revised as the network ID that the coded frame carries, and to main section
Point sends feedback frame, informs the status information of this node.Be re-coded from node receive coded frame when, by coded frame
Forwarded backward by another port.By such mode, host node from node successively to encoding, and set up network
ID and logic ID mapping table.Until the network interface A of host node receives the coded frame that network interface B sends, illustrate whole network
All it is re-coded.
In each communication cycle, the network interface B and network interface A of host node start the transmission of command frame simultaneously, and network interface B transmission is suitable
Sequence is from N to 1, and network interface A transmission order is from 1 to N, as shown in Figure 2.Host node the order that two ports are sent be with
The port is from annexation farthest one from node successively to annexation nearest one from node, such a data sender
Formula is effectively improved the utilization rate of network so that data transmission rate is greatly improved.
When receiving command frame from node, network ID therein is contrasted, is directly turned if the network ID with itself differs
Hair；If identical with the network ID of itself, store the packet and back send feedback frame, the time of the packet will be received
Time counter value when Counter Value and transmission feedback frame is written in feedback frame, so that host node calculates deviation so that
System realizes synchronization faster, if identical with the network ID of itself, store the packet and back sends feedback frame.Work as network
When normal, each the identical command frame that host node issues will be received in both direction from node, and in both direction all
Send feedback frame；Relative, host node all sends identical command frame from node in both direction to same, in both direction
The same feedback frame sent from node can be received.
Host node sends packet two ports parallel, and target back sends feedback after receiving packet from node
Frame, it is non-targeted from node receive packet it is backward before continue to forward.Loop has the function of seamless redundancy, any time loop
There is single netting twine failure or single from node failure, other remain to normally be communicated with host node from node.
Above is to preferable ring-type communication network basic introduction, embodiments of the invention can be based on above-mentioned ring
What shape communication network was carried out.
Embodiment one
The embodiment of the present invention one provides a kind of ring-type communication network increase and decrease from the method for node, can both apply existing
HSR networks in, can also apply in above-mentioned preferable ring-type communication network, its flow chart as shown in figure 3, including：
Step S301：Host node determines to be added according to the feedback frame changed in all feedback frames from node received
What is entered adds the position of network from node；
It is described it is to be added from node forward other from the feedback frame of node when, change the feedback frame.
The feedback frame can be the feedback frame of other command frames for host node sent from node, can also
It is the feedback frame that other send from node for other kinds of frame to host node, cleverly make use of here in proper communication
Feedback frame to add the information from node into host node feedback network, also avoids the need for host node and uses special inquiry frame
Acquisition, which has from node, adds this information, therefore can reduce extra bandwidth cost, improves the performance of system.
That to be added can be specifically one of the control information in modification feedback frame from node modification feedback frame, certainly,
The embodiment of the present invention can also change the other information for not influenceing to be communicated from node in feedback frame.
Preferably, it is described to be from the logical identifier of node for the ease of to being managed and safeguarding from node in network
Represented with natural number, and it is nearer from node with the network distance of the first network interface of host node, represent its logical identifier
Natural number is smaller, more remote from node with the network distance of first network interface of host node, represents the nature of its logical identifier
Number is bigger；
Two network interfaces of itself are utilized with opposite for host node with the transmission means of the packet from node in host node
Order frame sequence is sent, described according to reception when destination node back sends feedback frame after order frame sequence reaches destination node
All feedback frames from node in the feedback frame changed, determine the position to be added that network is added from node, tool
Body includes：
Host node determines the logic from node belonging to all feedback frames changed from the first network interface reception of itself
Mark it is minimum from node, and being patrolled from node belonging to all feedback frames changed received from the second network interface of itself
Volume mark it is maximum from node；
Host node determine it is described it is to be added from node add the position of network the logical identifier it is maximum from node
Between the network site from node of logical identifier minimum.
The mode of the above-mentioned determination position to be added that network is added from node is the preferred scheme of the embodiment of the present invention one,
The feedback frame changed each received using two network interfaces is determined, it is accurate determine it is to be added from the position of node
Put.
Certainly, the feedback frame changed that the embodiment of the present invention one can also be received using one of network interface carries out to be added
What is entered adds the determination of the position of network from node, now, if the feedback frame received using the first network interface, then can determine that described
It is to be added from node add the position of network the logical identifier it is maximum from node and first network interface receive not by
Between the network site from node of the minimum of the logical identifier from node described in the feedback frame of modification；If use the second network interface
The feedback frame of reception, then can determine that it is described it is to be added from node add the position of network the logical identifier it is minimum from section
The network from node of the maximum of the logical identifier from node described in the feedback frame do not changed that point and youngster's network interface receive
Between position.
Two network interfaces of itself are utilized with identical life for host node with the transmission means of the packet from node in host node
Frame sequence is made to send, order frame sequence loads feedback frame after reaching destination node, when feedback frame continues onwards transmission, the foundation
The feedback frame changed in all feedback frames from node received, determine the position to be added that network is added from node
Put, specifically include：
Host node determines the logic from node belonging to all feedback frames changed from the first network interface reception of itself
Mark it is maximum from node, and being patrolled from node belonging to all feedback frames changed received from the second network interface of itself
Volume mark it is minimum from node；
Host node determine it is described it is to be added from node add the position of network the logical identifier it is minimum from node
Between the network site from node of logical identifier maximum.
Step S302：Host node changes the corresponding relation according to the position determined.
In this step S302, host node determines to be added from the position of node, can be that this is to be added from node point
Distribution network ID, and be to be connect including the all-network node foundation to be added including node apart from its first network again simultaneously
Mouth network distance from the close-by examples to those far off, redistributes logical identifier number from small to large, namely have modified the logic mark of network node
Know the corresponding relation with network identity.
Step S303：Host node indicates institute to the coded frame to be added that network identity is carried from node transmission
State and to be added the network identity of itself is revised as the network identity that is carried in the coded frame from node and sends feedback frame.
The network identity carried in the coded frame is that host node obtains from the amended corresponding relation.
Preferably, host node and packet from node transmission means for host node using two network interfaces of itself with
Opposite order frame sequence is sent, after order frame sequence reaches destination node, when destination node back sends feedback frame, and the master
Node is being more than or equal to all of the minimum logical identifier from node of the logical identifier using the first network interface to logical identifier
After the order logically identified from node from big to small sends command frame, carried to be added sent from node
The coded frame of network identity.
The above-mentioned mode to the coded frame to be added that network identity is carried from node transmission, to normal command frame
It is smaller to send influence, it is original on system to realize that synchronizing function influence is smaller.
Preferably, increase it is multiple from node when, the host node is sent on the path of coded frame from one network interface
First to be added since node, for each to be added from node, perform determine the position, described in modification successively
Corresponding relation and the operation for sending the coded frame for carrying network identity.
The multiple schemes from node of above-mentioned increase, generally, as according to the order to be added from node in the loop,
It is successfully joined one and to be added from node and then carries out next addition to be added from node.
Preferably, in order to realize the determination from node to exiting, methods described also includes：
The host node do not received in setting time from the feedback frame of node when, it is determined that from node net should be had dropped out
Network；And host node changes the corresponding relation when loop connects again.
It is above-mentioned when host node connects again in loop, change the corresponding relation can be host node delete have dropped out
, can also be after deleting also according to apart from its first network interface network distance from the logical identifier and network identity of node
From the close-by examples to those far off, logical identifier number from small to large is redistributed to each network node in network, namely have modified the correspondence
Relation.
In the scheme of the embodiment of the present invention one, because the host node in the ring-type communication network in the present invention is at two
Network interface starts the transmission of command frame simultaneously, constitutes two communications loops, has the backup of communication link, therefore, from node
Addition and exit network and do not influence the normal operation of network.
In the method for the embodiment of the present invention one, host node is according to the feedback frame changed, and is determined to be added from node
The position of network is added, and then the corresponding relation is changed according to the position, and is carried to be added sent from node
The coded frame of network identity so that the corresponding pass of the network identity from node and logical identifier to be added is obtained in host node
System, at the same it is to be added also obtain network identity from node, it is thus achieved that successfully add ring-type communication network, a side
Face, due to not needing special inquiry frame, therefore relative to prior art, it is possible to reduce extra bandwidth cost；On the other hand,
Because this method is to use the feedback frame in system to obtain the position to be added for adding network and addition network from node
Information, it is only necessary to which a communication cycle can complete the addition network to be added from node, thus it is guaranteed that communication system is increasing
Subtract during node that packet loss, net synchronization capability do not decline, communication efficiency does not reduce.
The scheme in the embodiment of the present invention one is carried out below by specific ring-type communication network in embodiment two detailed
Ground explanation.
Embodiment two
The embodiment of the present invention two provides a kind of method of ring-type communication network increase and decrease from node, for illustrating this method
The structural representation of ring-type communication network is as shown in figure 4, including a host node and 4 from node.
After system electrification, the network ID of host node is defaulted as 0, and 255 are defaulted as from the network ID of node.Host node self-test is complete
Cheng Hou, the coding and sorting order to network is initiated by network interface B, be each from one network ID number of node again order-assigned, main section
O'clock 4 are encoded successively from node, it is established that network ID and the mapping table of logic ID, now complete initialization.Initialization
Network connection relation during completion is shown in Fig. 4.The mapping table is table（1）It is shown.
| Network ID | 0 | 1 | 2 | 3 | 4 |
| Logic ID | 0 | 1 | 2 | 3 | 4 |
Table（1）
When increasing by one and newly entering loop from node, as shown in figure 5, be newly 255 from the default network ID of node, due to
For host node not yet to newly being handled from node, this stylish logic ID from node is unknown.Into a communication cycle, host node
Command frame normally is sent, on the passage sent from network interface B, network ID is that 4 feedback frame from node passes through the forwarding of new node,
Control signal is changed, and other are unaffected from the feedback frame of node；And sent from network interface A on the passage of command frame, network ID
For 1 from node, network ID be 2 from node, network ID be 3 forwardings for all passing through from the feedback frame of node new node, control letter
Number changed, network ID is 3 unaffected from the feedback frame of node.Therefore, host node can determine whether newly to add network from node
Position network ID be 3 from node and network ID be 4 between node.In next communication cycle, host node modification logic
ID and network ID mapping table, amended logical relation corresponding table such as table（2）It is shown.
| Network ID | 0 | 1 | 2 | 3 | 4 | 5 |
| Logic ID | 0 | 1 | 2 | 3 | 5 | 4 |
Table（2）
Network interface B is sent to newly from the coded frame of node after the command frame from node for being 4 for network ID is sent, it
It is further continued for sending the order from node for being 1 from node and network ID for being 2 from node, network ID for being 3 for network ID afterwards
Frame.Newly from node when receiving coded frame, the network ID of itself is changed, and feedback frame is sent to host node, above-mentioned addition is new
From the data flow figure of node as shown in fig. 6, so far, being newly re-coded from node, it is added in network, adds newly from node
The structural representation of network afterwards is as shown in Figure 7.
When have exit loop from node when, as shown in figure 8, network ID is 2 to exit loop from node, need to first disconnect network
ID be 2 from node and network ID be 1 from node, network ID be 2 from node and network ID be 3 from the net between node
Line, host node will not receive the feedback frame from node that network ID is 2 for a long time, and it is 2 to have been moved back from node to judge network ID
Go out loop.It 1 is 3 when being connected from section from section and network ID to be when network ID, and loop connects again, host node will be changed
The mapping table of network ID and logic ID, such as table（3）It is shown.
| Logic ID | 1 | 2 | 3 | 4 |
| Network ID | 1 | 3 | 5 | 4 |
Table（3）
Embodiment three
Based on the same inventive concept with the embodiment of the present invention one, the embodiment of the present invention three provides a kind of ring-type communication network
Increase and decrease from the method for node, its flow chart as shown in figure 9, including：
Step S901：It is to be added from node when forwarding other from the feedback frame of node, change the feedback frame；
The feedback frame can be the feedback frame of other command frames for host node sent from node, can also
It is the feedback frame that other send from node for other kinds of frame to host node, cleverly make use of here in proper communication
Feedback frame to add the information from node into host node feedback network, also avoids the need for host node and uses special inquiry frame
Acquisition, which has from node, adds this information, therefore can reduce extra bandwidth cost, improves the performance of system.
That to be added can be specifically one of the control information in modification feedback frame from node modification feedback frame, certainly,
The embodiment of the present invention can also change the other information for not influenceing to be communicated from node in feedback frame.
Step S902：Instruction host node to be added is according to the feedback changed in all feedback frames from node received
Frame, the position to be added that network is added from node is determined, and changes the corresponding relation；
Step S903：The coded frame to be added that carry network identity that host node transmission is received from node, will
The network identity of itself is revised as the network identity carried in the coded frame, and sends feedback frame to host node.
The network identity carried in the coded frame is that host node obtains from amended corresponding relation.
Further, this method also includes：
Increase it is multiple from node when, it is described it is to be added from node instruction host node send coded frame from one network interface
Path on first it is to be added since node, for each to be added from node, perform determine institute's rheme successively
Put, change the corresponding relation and send the operation for the coded frame for carrying network identity.
Example IV
Based on the same inventive concept with the embodiment of the present invention one, the embodiment of the present invention four provides a kind of ring-type communication network
In host node 1000, as shown in Figure 10, including：
Corresponding relation establishes unit 1001, for when the ring-type communication network initializes, to each net being linked in sequence
Network node carries out sequential encoding, establishes the network identity of all-network node and the corresponding relation of logical identifier；
Determining unit 1002, for according to the feedback frame changed in all feedback frames from node received, determining institute
State it is to be added from node add network position, it is described it is to be added from node forward other from the feedback frame of node when,
Change the feedback frame；
Corresponding relation changes unit 1003, for according to the position determined, changing the corresponding relation；
Transmitting element 1004, it is described for carrying the coded frame of network identity to be added sent from node
The network identity carried in coded frame is that host node obtains from the amended corresponding relation；
Indicating member 1005, for indicating described to be added the network identity of itself to be revised as into the coding from node
The network identity that is carried in frame simultaneously sends feedback frame.
Preferably, it is described to be represented from the logical identifier of node with natural number, and with the first network interface of host node
Network distance is nearer from node, represents that the natural number of its logical identifier is smaller, the network with first network interface of host node
Distance is more remote from node, represents that the natural number of its logical identifier is bigger；
Two network interfaces of itself are utilized with opposite for host node with the transmission means of the packet from node in host node
Order frame sequence is sent, after order frame sequence reaches destination node, when destination node back sends feedback frame, and the determining unit
1002, specifically for determining the logic mark from node belonging to all feedback frames changed from the first network interface reception of itself
Know minimum from node, and the logic from node belonging to all feedback frames changed received from the second network interface of itself
Mark it is maximum from node；Determine it is described it is to be added from node add the position of network the logical identifier it is maximum from section
Between the network site from node of point and logical identifier minimum.
Two network interfaces of itself are utilized with identical life for host node with the transmission means of the packet from node in host node
Frame sequence is made to send, order frame sequence loads feedback frame after reaching destination node, when feedback frame continues onwards transmission, the determination
Unit, specifically for determining the logic mark from node belonging to all feedback frames changed from the first network interface reception of itself
Know maximum from node, and the logic from node belonging to all feedback frames changed received from the second network interface of itself
Mark it is minimum from node；Determine it is described it is to be added from node add the position of network the logical identifier it is minimum from section
Between the network site from node of point and logical identifier maximum.
Preferably, host node and packet from node transmission means for host node using two network interfaces of itself with
Opposite order frame sequence is sent, after order frame sequence reaches destination node, when destination node back sends feedback frame, and the hair
Send unit 1004, specifically for using the first network interface to logical identifier be more than or equal to the logical identifier it is minimum from node
After all orders for logically being identified from node from big to small of logical identifier send command frames, to it is described it is to be added from
Node sends the coded frame for carrying network identity.
Preferably, the host node also includes：Control unit 1006, for increase it is multiple from node when, described in control
Determining unit sent from one network interface first on the path of coded frame it is to be added since node, for each to be added
What is entered determines the operation of the position from node, successively execution.
Embodiment five
Based on the same inventive concept with the embodiment of the present invention three, the embodiment of the present invention five provides a kind of ring-type communication network
In from node 1100, its structural representation is as shown in figure 11, including：
Unit 1101 is changed, for when forwarding other from the feedback frame of node, changing the feedback frame；
Indicating member 1102, for indicating host node according to the feedback changed in all feedback frames from node received
Frame, the position to be added that network is added from node is determined, and changes the corresponding relation of logical identifier and network identity；
Receiving unit 1103, for receiving the coded frame for carrying network identity of host node transmission, by the network of itself
Mark is revised as the network identity that is carried in the coded frame, and the network identity carried in the coded frame is host node from modification
Obtained in the corresponding relation afterwards；
Transmitting element 1104, for sending feedback frame to host node.
The indicating member 1102, be additionally operable to increase it is multiple from node when, instruction host node sent from one network interface
First on the path of coded frame to be added since node, for each to be added from node, performs determination successively
The position, the modification corresponding relation and the operation for sending the coded frame for carrying network identity.
Embodiment six
Based on the same inventive concept with the embodiment of the present invention one, the embodiment of the present invention six provides a kind of ring-type communication network
System, as shown in figure 12, including：It is host node 1201, to be added from node 1202 and at least one from node 1203, wherein：
The host node 1201, in the ring-type communication network system initialization, to each network being linked in sequence
Node carries out sequential encoding, establishes the network identity of all-network node and the corresponding relation of logical identifier；According to the institute received
There is the feedback frame changed from the feedback frame of node, determine the position to be added that network is added from node；According to really
The fixed position, changes the corresponding relation；To the coded frame to be added that network identity is carried from node transmission；
The network identity carried in the coded frame obtains from the amended corresponding relation；
It is to be added from node 1202, for when forwarding other from the feedback frame of node, changing the feedback frame, receive
The coded frame of network identity is carried, the network identity that the network identity of itself is revised as carrying in the coded frame, concurrently
Send feedback frame.
Preferably, it is described to be represented from the logical identifier of node with natural number, and with the first network interface of host node
Network distance is nearer from node, represents that the natural number of its logical identifier is smaller, the network with first network interface of host node
Distance is more remote from node, represents that the natural number of its logical identifier is bigger；
The host node 1201, specifically for all feedback frame institutes changed for determining to receive from the first network interface of itself
The logical identifier from node of category it is minimum from node, and all feedback frames changed received from the second network interface of itself
The affiliated logical identifier from node it is maximum from node；Determine it is described it is to be added from node add network position described
Between the maximum network site from node minimum from node and logical identifier of logical identifier.
Preferably, the host node 1201, specifically for using the first network interface to all more than the logical identifier
After the order logically identified from node from big to small sends command frame, carried to be added sent from node
The coded frame of network identity.
Preferably, the host node 1201, be additionally operable to increase it is multiple from node when, send coded frame from one network interface
Path on first it is to be added since node, for each to be added from node, it is to be added to perform instruction successively
From node modification feedback frame, determine that the position, the modification corresponding relation and sending carry the coded frame of network identity
Operation.
Embodiment seven
Based on the same inventive concept with the embodiment of the present invention one, the embodiment of the present invention seven provides a kind of ring-type communication network
In host node, its structural representation is as shown in figure 13, including processor 1301 and transceiver interface 1302, wherein：
Processor 1301, in the ring-type communication network system initialization, to each network node being linked in sequence
Sequential encoding is carried out, establishes the network identity of all-network node and the corresponding relation of logical identifier；Foundation passes through transceiver interface
The feedback frame changed in the 1302 all feedback frames from node received, determine described to be added to add network from node
Position；According to the position determined, the corresponding relation is changed；By transceiver interface to it is described it is to be added from node send
Carry the coded frame of network identity；The network identity carried in the coded frame is obtained from the amended corresponding relation
Take.
Preferably, it is described to be represented from the logical identifier of node with natural number, and with the first network interface of host node
Network distance is nearer from node, represents that the natural number of its logical identifier is smaller, the network with first network interface of host node
Distance is more remote from node, represents that the natural number of its logical identifier is bigger；
The processor 1301, specifically for all feedback frame institutes changed for determining to receive from the first network interface of itself
The logical identifier from node of category it is minimum from node, and all feedback frames changed received from the second network interface of itself
The affiliated logical identifier from node it is maximum from node；Determine it is described it is to be added from node add network position described
Between the maximum network site from node minimum from node and logical identifier of logical identifier.
Preferably, the processor 1301, specifically for using the first network interface to all more than the logical identifier
After the order logically identified from node from big to small sends command frame, carried to be added sent from node
The coded frame of network identity.
Preferably, the processor 1301, be additionally operable to increase it is multiple from node when, send coded frame from one network interface
Path on first it is to be added since node, for each to be added from node, it is to be added to perform instruction successively
From node modification feedback frame, determine that the position, the modification corresponding relation and sending carry the coded frame of network identity
Operation.
Embodiment eight
Based on the same inventive concept with the embodiment of the present invention three, the embodiment of the present invention eight provides a kind of ring-type communication network
In from node, its structural representation is as shown in figure 14, including processor 1401 and transceiver interface 1402, wherein：
Processor 1401, it is described anti-for when forwarding other from the feedback frame of node by transceiver interface 1402, changing
Frame is presented, and indicates that host node according to the feedback frame changed in all feedback frames from node received, determines described to be added
The position that network is added from node, and change the corresponding relation；Received by transceiver interface 1402 and carry network identity
Coded frame, the network identity that the network identity of itself is revised as carrying in the coded frame, and being sent by transceiver interface
Feedback frame, the network identity carried in the coded frame is that host node obtains from amended corresponding relation.
The embodiments of the invention provide a kind of ring-type communication network to increase and decrease the method, apparatus and system from node, host node
It is according to the feedback frame changed, determines the position to be added that network is added from node, and then institute is changed according to the position
State corresponding relation, and the coded frame of network identity is carried to be added sent from node so that obtained in host node to be added
Enter from the network identity of node and the corresponding relation of logical identifier, while it is to be added also obtain network identity from node,
It is thus achieved that successfully add ring-type communication network, on the one hand, due to not needing special inquiry frame, therefore relative to existing
Technology, it is possible to reduce extra bandwidth cost；On the other hand, due to this method be using in system feedback frame obtain have it is to be added
What is entered adds the information of the position of network and addition network from node, it is only necessary to which a communication cycle can be completed to be added from section
The addition network of point, thus it is guaranteed that packet loss, net synchronization capability do not decline, communicated communication system during node is increased and decreased
Efficiency does not reduce.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more
Usable storage medium（Including but not limited to magnetic disk storage, CD-ROM, optical memory etc.）The computer program production of upper implementation
The form of product.
The present invention is with reference to method according to embodiments of the present invention, equipment（System）And the flow of computer program product
Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (19)
1. a kind of increase and decrease of ring-type communication network is from the method for node, it is characterised in that the ring-type communication network in initialization,
Host node carries out sequential encoding to each network node being linked in sequence, and establishes the network identity and logical identifier of all-network node
Corresponding relation；Methods described includes：
Host node determines to be added from node addition according to the feedback frame changed in all feedback frames from node received
The position of network, it is described it is to be added from node forward other from the feedback frame of node when, change the feedback frame；
Host node changes the corresponding relation according to the position determined；
Host node is described to be added from section to the coded frame to be added that network identity is carried from node transmission, instruction
The network identity of itself is revised as the network identity that is carried in the coded frame and sends feedback frame by point, is taken in the coded frame
The network identity of band is that host node obtains from the amended corresponding relation.
2. the method as described in claim 1, it is characterised in that it is described to be represented from the logical identifier of node with natural number,
And it is nearer from node with the network distance of the first network interface of host node, represent that the natural number of its logical identifier is smaller, with master
The network distance of first network interface of node is more remote from node, represents that the natural number of its logical identifier is bigger；
Two network interfaces of itself are utilized with opposite order for host node with the transmission means of the packet from node in host node
Frame sequence is sent, described according to the institute received when destination node back sends feedback frame after order frame sequence reaches destination node
There is the feedback frame changed from the feedback frame of node, determine the position to be added that network is added from node, specific bag
Include：
Host node determines the logical identifier from node belonging to all feedback frames changed from the first network interface reception of itself
It is minimum from node, and the logic mark from node belonging to all feedback frames changed received from the second network interface of itself
Know maximum from node；
Host node determine it is described it is to be added from node add the position of network the logical identifier it is maximum from node and patrol
Between the network site from node for collecting mark minimum；
Two network interfaces of itself are utilized with same commands frame for host node in the transmission means of host node and the packet from node
Sequence is sent, and order frame sequence loads feedback frame after reaching destination node, described according to reception when feedback frame continues onwards transmission
All feedback frames from node in the feedback frame changed, determine the position to be added that network is added from node, tool
Body includes：
Host node determines the logical identifier from node belonging to all feedback frames changed from the first network interface reception of itself
It is maximum from node, and the logic mark from node belonging to all feedback frames changed received from the second network interface of itself
Know minimum from node；
Host node determine it is described it is to be added from node add the position of network the logical identifier it is minimum from node and patrol
Between the network site from node for collecting mark maximum.
3. method as claimed in claim 2, it is characterised in that based on host node and transmission means from the packet of node
Node is sent using two network interfaces of itself with opposite order frame sequence, after order frame sequence reaches destination node, target section
When point back sends feedback frame, the host node is being more than or equal to logical identifier minimum using the first network interface to logical identifier
The logical identifier from node all orders for logically being identified from node from big to small send command frames after, to described
To be added sends the coded frame for carrying network identity from node.
4. the method as described in claim 1, it is characterised in that increase it is multiple from node when, the host node from one
Network interface send first on the path of coded frame it is to be added since node, for each to be added from node, successively
Perform and determine the position, the modification corresponding relation and the operation for sending the coded frame for carrying network identity.
5. the method as described in claim 1, it is characterised in that methods described also includes：
Host node do not received in setting time from the feedback frame of node when, it is determined that from node network should be had dropped out；
Host node changes the corresponding relation when loop connects again.
6. a kind of increase and decrease of ring-type communication network is from the method for node, it is characterised in that the ring-type communication network in initialization,
Host node carries out sequential encoding to each network node being linked in sequence, and establishes the network identity and logical identifier of all-network node
Corresponding relation；Methods described includes：
It is to be added from node when forwarding other from the feedback frame of node, change the feedback frame, and
Host node is indicated according to the feedback frame changed in all feedback frames from node received, determine it is described it is to be added from
Node adds the position of network, and changes the corresponding relation；
The coded frame to be added that carry network identity that host node transmission is received from node, by the network identity of itself
The network identity carried in the coded frame is revised as, and feedback frame, the network carried in the coded frame are sent to host node
Mark is that host node obtains from amended corresponding relation.
7. method as claimed in claim 6, it is characterised in that increase it is multiple from node when, it is described to be added from node
Indicate host node sent from one network interface first on the path of coded frame it is to be added since node, treated for each
What is added determines the position, the modification corresponding relation and sends the coding for carrying network identity from node, successively execution
The operation of frame.
8. the host node in a kind of ring-type communication network, it is characterised in that the host node includes：
Corresponding relation establishes unit, for when the ring-type communication network initializes, entering to each network node being linked in sequence
Row sequential encoding, establish the network identity of all-network node and the corresponding relation of logical identifier；
Determining unit, for according to the feedback frame changed in all feedback frames from node received, determine it is to be added from
Node add network position, it is described it is to be added from node forward other from the feedback frame of node when, change the feedback
Frame；
Corresponding relation changes unit, for according to the position determined, changing the corresponding relation；
Transmitting element, for carrying the coded frame of network identity to be added sent from node, in the coded frame
The network identity of carrying is that host node obtains from the amended corresponding relation；
Indicating member, for indicating described to be added to be revised as carrying in the coded frame by the network identity of itself from node
Network identity and send feedback frame.
9. host node as claimed in claim 8, it is characterised in that it is described from the logical identifier of node be to be represented with natural number
, and it is nearer from node with the network distance of the first network interface of host node, represent that the natural number of its logical identifier is smaller, with
The network distance of first network interface of host node is more remote from node, represents that the natural number of its logical identifier is bigger；
Two network interfaces of itself are utilized with opposite order for host node with the transmission means of the packet from node in host node
Frame sequence is sent, after order frame sequence reaches destination node, when destination node back sends feedback frame, and the determining unit, tool
Body is used to determine that the logical identifier from node belonging to all feedback frames changed from the first network interface reception of itself is minimum
From node, and the logical identifier from node belonging to all feedback frames changed received from itself the second network interface is most
It is big from node；Determine it is described it is to be added from node add the position of network the logical identifier it is maximum from node and patrol
Between the network site from node for collecting mark minimum；
Two network interfaces of itself are utilized with same commands frame for host node in the transmission means of host node and the packet from node
Sequence is sent, and order frame sequence loads feedback frame after reaching destination node, described to determine list when feedback frame continues onwards transmission
Member, specifically for determining the logical identifier from node belonging to all feedback frames changed from the first network interface reception of itself
It is maximum from node, and the logic mark from node belonging to all feedback frames changed received from the second network interface of itself
Know minimum from node；Determine it is described it is to be added from node add the position of network the logical identifier it is minimum from node
Between the network site from node of logical identifier maximum.
10. host node as claimed in claim 9, it is characterised in that in the transmission means of host node and the packet from node
Sent for host node using two network interfaces of itself with opposite order frame sequence, after order frame sequence reaches destination node, mesh
When mark node back sends feedback frame, the transmitting element, specifically for being more than or equal to using the first network interface to logical identifier
All orders logically identified from node from big to small of the minimum logical identifier from node of the logical identifier are sent
After command frame, to the coded frame to be added that network identity is carried from node transmission.
11. host node as claimed in claim 8, it is characterised in that the host node also includes：Control unit, for increasing
Add from node when, control the determining unit sent from one network interface first on the path of coded frame it is to be added
Since node, for each operation to be added from node, successively the execution determination position.
12. in a kind of ring-type communication network from node, it is characterised in that it is described to include from node：
Unit is changed, for when forwarding other from the feedback frame of node, changing the feedback frame；
Indicating member, for indicating host node according to the feedback frame changed in all feedback frames from node received, it is determined that
To be added adds the position of network from node, and changes the corresponding relation of logical identifier and network identity；
Receiving unit, for receiving the coded frame for carrying network identity of host node transmission, the network identity of itself is changed
For the network identity carried in the coded frame, the network identity that is carried in the coded frame is host node from amended described
Obtained in corresponding relation；
Transmitting element, for sending feedback frame to host node.
13. as claimed in claim 12 from node, it is characterised in that the indicating member, be additionally operable to multiple from section in increase
During point, instruction host node sent from one network interface first on the path of coded frame it is to be added since node, for
It is each to be added from node, perform determine that the position, the modification corresponding relation and transmission carry network identity successively
Coded frame operation.
A kind of 14. ring-type communication network system, it is characterised in that including：Host node, it is to be added from node and it is at least one from
Node, wherein：
The host node, in the ring-type communication network system initialization, being carried out to each network node being linked in sequence
Sequential encoding, establish the network identity of all-network node and the corresponding relation of logical identifier；It is all from node according to what is received
Feedback frame in the feedback frame changed, determine the position to be added that network is added from node；It is described according to what is determined
Position, change the corresponding relation；To the coded frame to be added that network identity is carried from node transmission；The coding
The network identity carried in frame obtains from the amended corresponding relation；
It is to be added from node, for when forwarding other from the feedback frame of node, changing the feedback frame, reception carries net
The coded frame of network mark, the network identity that the network identity of itself is revised as carrying in the coded frame, and send feedback frame.
15. ring-type communication network system as claimed in claim 14, it is characterised in that it is described from the logical identifier of node be use
What natural number represented, and nearer from node with the network distance of the first network interface of host node, represent its logical identifier from
So count it is smaller, it is more remote from node with the network distance of first network interface of host node, represent the natural number of its logical identifier
It is bigger；
The host node, itself and the packet from node transmission means for host node using two network interfaces of itself with phase
Anti- order frame sequence is sent, and after order frame sequence reaches destination node, when destination node back sends feedback frame, is specifically used for
It is determined that the logical identifier from node belonging to all feedback frames changed received from itself the first network interface it is minimum from section
Point, and the logical identifier from node belonging to all feedback frames changed received from itself the second network interface it is maximum from
Node；Determine it is described it is to be added from node add the position of network the logical identifier it is maximum from node and logical identifier
Between the minimum network site from node；Itself transmission means with packet from node for host node using itself
Two network interfaces are sent with same commands frame sequence, and order frame sequence loads feedback frame after reaching destination node, feedback frame continue to
During preceding transmission, specifically for determining being patrolled from node belonging to all feedback frames changed from the first network interface reception of itself
Volume mark it is maximum from node, and belonging to all feedback frames changed received from the second network interface of itself from node
Logical identifier it is minimum from node；And determine it is described it is to be added from node add network position in the logical identifier most
Between the small network site from node maximum from node and logical identifier.
16. ring-type communication network system as claimed in claim 15, it is characterised in that the host node, itself with from section
The transmission means of the packet of point is sent for host node using two network interfaces of itself with opposite order frame sequence, command frame sequence
After row reach destination node, when destination node back sends feedback frame, specifically for utilizing the first network interface big to logical identifier
In all from big to small suitable of logically identifying from node of the logical identifier from node minimum equal to the logical identifier
After sequence sends command frame, to the coded frame to be added that network identity is carried from node transmission.
17. ring-type communication network system as claimed in claim 14, it is characterised in that the host node, be additionally operable to increasing
It is multiple from node when, sent from one network interface first on the path of coded frame it is to be added since node, for every
Individual to be added from node, execution instruction is to be added successively changes feedback frame from node, determines that the position, modification are described right
It should be related to and send the operation for the coded frame for carrying network identity.
A kind of 18. host node in ring-type communication network, it is characterised in that including processor and transceiver interface, wherein：
Processor, in the ring-type communication network system initialization, to each network node progress order being linked in sequence
Coding, establishes the network identity of all-network node and the corresponding relation of logical identifier；According to the institute received by transceiver interface
There is the feedback frame changed from the feedback frame of node, determine the position to be added that network is added from node；According to what is determined
The position, change the corresponding relation；Network identity is carried to be added sent from node by transceiver interface
Coded frame；The network identity carried in the coded frame obtains from the amended corresponding relation.
19. in a kind of ring-type communication network from node, it is characterised in that including processor and transceiver interface, wherein：
Processor, for when forwarding other from the feedback frame of node by transceiver interface, changing the feedback frame, and indicate to lead
Node determines to be added to add network from node according to the feedback frame changed in all feedback frames from node received
Position, and change the corresponding relation of logical identifier and network identity；The coding for carrying network identity is received by transceiver interface
Frame, the network identity that the network identity of itself is revised as carrying in the coded frame, and feedback frame is sent by transceiver interface,
The network identity carried in the coded frame is that host node obtains from amended corresponding relation.
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| CN108551684B (en) * | 2018-03-20 | 2021-01-01 | 深圳友讯达科技股份有限公司 | Node network access method and device |
| CN112566307B (en) * | 2019-09-10 | 2022-11-04 | 酷矽半导体科技(上海)有限公司 | Safety display system and safety display method |
| WO2021168773A1 (en) * | 2020-02-28 | 2021-09-02 | 华为技术有限公司 | Communication method and communication apparatus |
| JP2022083143A (en) * | 2020-11-24 | 2022-06-03 | オムロン株式会社 | Control device, communication control method, and control program |
| CN115271025A (en) * | 2021-04-29 | 2022-11-01 | 华为技术有限公司 | Data processing method, device and system |
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