CN100471146C - Household network system - Google Patents

Abstract

The invention uses a network system with a specified communication protocol to connect to at least one electrical device. The network protocol includes application layer, network layer, data link layer and physical layer. Make setting for maximum time enablement, transmission overtime, over time, service over time. The maximum time enablement corresponds to data frames transmitted by data link layer. The transmission over time starts after transmitting NPDU from network layer to data link layer, and ends at receiving 'primitive' from data link layer. The over time is the time for await answer after transmitting request packet. The service over time is the waiting time after user's service request received by application layer.

Description

Domestic network system

Technical field

The present invention relates to a kind of domestic network system.

Background technology

Home network (home Network) is a kind of network that each digitized home is connected.By home network, can control the family in the family easily whenever and wherever possible, can bring enjoyment in life.Along with the development of digital information processing, families such as refrigerator or washing machine are developing into digitized home equipment gradually.Along with the fast development of family's use system technology and high-speed digital communication technology, the information home of above-mentioned technology is appearring fully utilizing.Under above-mentioned background, domestic network system has appearred.

This home network such as following table 1 can be divided into data network according to the COS that is provided, amusement net and interactive network.

Table 1

Classification	Function	COS
			Data network	Network between PC and peripheral equipment	Exchanges data, and network service
The amusement net	The network of A/V (Audio/Video) equipment room	Music, services such as animation
			Interactive network	The household equipment Control Network	The control of household equipment, home automation, Long-distance Control, information service etc.

Here, data network (data network) belongs between PC and peripheral equipment, for the exchanges data or the network type of providing services on the Internet etc. and to set up.Amusement net (entertainment network) belongs to handles ODO, the home network type of information such as VDO.In addition, interactive network (living network) is meant the network that is controlled to be purpose with home automation or Long-distance Control etc. merely.

This domestic network system that is used for family is formed by master control (master) equipment and slave as electric equipment.As electric equipment, main control device controls or shows the state of other electric equipments to other electric equipments.As electric equipment, slave is pressed characteristic or other key elements of electric equipment, the requirement of main control device is replied, and export the state change information of self.The electric equipment that uses in the specification of the present invention (or new equipment) comprises that not only washing machine, refrigerator etc. are used for the family of above-mentioned interactive network service, the family that also comprises the family that is used for the data network service and be used for the entertainment network service.In addition, also comprise coal gas automatic control equipment and automatically-controlled door, electrical equipment such as electric light.

Above-mentioned conventional art can not provide general usefulness (broad sense) communication specification that the electric equipment in the domestic network system is provided functions such as fulfiling control and supervision.

Summary of the invention

In order to overcome the above-mentioned shortcoming that prior art exists, the invention provides a kind of general communication specification of using that is suitable for---the domestic network system of control communication protocol, the above-mentioned general function that has each electric equipment in control and the supervision domestic network system with communication specification.

Another object of the present invention is to provide a kind of as the general domestic network system of controlling communication protocol (Living network Control Protocol:LnCP) with the interactive network of communication specification.

Another purpose of the present invention is to provide a kind of domestic network system, sets the size of each instrumental variable and inscape, so that stable information transmission is regulated and obtained to the data volume of easily carrying out on the LnCP.

The technical solution adopted for the present invention to solve the technical problems is:

The above electric equipment that domestic network system of the present invention connects with above-mentioned network system by certain network system, by specific communication protocol, by above-mentioned special communication protocol and above-mentioned net connection, and be used to control and monitor that the network manager of above-mentioned electric equipment forms; Procotol comprises application layer, network layer, data link layer and physical layer; And to followingly maximum transmit the permission time (MACExecTime), transmit time-out time (SendTimeOut), time-out time (TimeOut), service time-out time (SvcTimeOut) set; Maximum transmission permission time (MACExecTime) is corresponding to data link layer transmit data frames unit; Transmit time-out time (SendTimeOut) and be network layer after transmit NPDU, receive the time till data link layer finishes (DLLCompleted) primitive primitiv to data link layer; Time-out time (TimeOut) is the time of wait acknowledge after the transmission request data package when request-response message, or the time interval between each continuous information when notifying repeatedly, is set at application layer; Service time-out time (SvcTimeOut) is to receive from the certain stand-by period after user's the service execution request from application layer, this maximum transmits the permission time (MACExecTime) less than transmitting time-out time (SendTimeOut), transmit time-out time (SendTimeOut) less than time-out time (TimeOut), time-out time (TimeOut) less than service time-out time (SvcTimeOut).

Above-mentioned maximum transmission permission time (MACExecTime) is below 1 second.

It is below 1 second that above-mentioned transmission transmits time-out time (SendTimeOut).

Time-out time (TimeOut) is set by the user.

Service time-out time (SvcTimeOut) was set for below 30 seconds.

Above-mentioned communication protocol is interactive network control communication protocol (LnCP).

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is a home network block diagram of the present invention.

Fig. 2 is the block diagram of interactive network control protocol of the present invention.

The interface schematic diagram of Fig. 3 a interlayer during non-independent shape transmission medium for Fig. 2 physical layer 90 is connected to.

The interface schematic diagram of the interlayer when Fig. 3 b is connected to independent shape transmission medium for Fig. 2 physical layer 90.

Fig. 4 a is the structured flowchart of the APDU in the application layer 60 among Fig. 3 a, the 3b.

Fig. 4 b is the structured flowchart of the APDU in the network layer 70 among Fig. 3 a, the 3b.

Fig. 4 c is the detailed block diagram of NLC among the NPDU.

Fig. 4 d is the structured flowchart for the HCNPDU in the home network subsidiary layer 71 among Fig. 3 a, the 3b.

Fig. 4 e is the structured flowchart of the Frame in the data link layer among Fig. 3 a, the 3b.

Fig. 4 f is the structured flowchart of the Frame in the physical layer among Fig. 3 a, the 3b.

Fig. 5 a is the primitive primitiv transmission flowsheet between each layer of main control device.

Fig. 5 b is the transmission flowsheet of each interlayer primitive primitiv of slave.

The number in the figure explanation:

1: domestic network system 2: internet

3:LnCP server 4: customer equipment

10: gateway 20-23: network manager

30,31:LnCP router four 0-49: electric equipment

Embodiment

Below, by embodiment and accompanying drawing, domestic network system of the present invention is elaborated.Indubitable, scope of the present invention is not subject to following embodiment and accompanying drawing.Interest field of the present invention should be that the basis makes an explanation with the claim scope.

As shown in Figure 1, domestic network system 1 is connected to LnCP server 3 by internet network 2.Customer equipment 4 is connected to LnCP server 3 by internet network 2 in addition.That is, domestic network system 1 is connected into the information of can transmitting mutually to LnCP server 3 and/or customer equipment 4.

The external network of domestic network system 1 comprises internet network 2, and the kind of the network based customer equipment 4 of said external also can possess miscellaneous equipment.That is, be example with this internet network 2, customer equipment 4 possesses Web server (Websever) (not shown) during for computer, and customer equipment 4 possesses the communication server (Wap sever) (not shown) during for the networking telephone.

LnCP server 3 is connected to domestic network system 1 and customer equipment 4 respectively by specific registration and deregistration procedure, receives supervision and control command etc. from customer equipment 4, and the information by internet network 2 usefulness particular forms is sent to domestic network system 1 again.In addition, LnCP server 3 receives and stores the information of particular form or it is sent to customer equipment 4 from domestic network system 1.In addition, LnCP server 3 stores self or the information of generation is sent to above-mentioned domestic network system 1.That is, domestic network system 1 is connected in LnCP server 3, can download the service content that LnCP server 3 is provided.

Domestic network system 1 comprises gateway 10, network manager 20～23, LnCP router three 0,31, LnCP adapter (adapter) 35,36 and a plurality of electric equipment 40～49.Gateway 10 has the function that connects the internet.Network manager 20～23 is fulfiled the environment set of electric equipment 40～49 and management function.The connection that LnCP router three 0,31 is responsible between the transmission medium.LnCP adapter 35,36 can make network manager 22 and electric equipment 46 be connected to transmission medium.

Network in the domestic network system 1 is coupled to each other by each electric equipment 40～49 shared transmission medium to be formed.This transmission medium can utilize the transmission medium (non-standardized transmission medium) of data link layer unnormalizeds such as RS-485 or lower powered RF, maybe can utilize the transmission medium (standardized transmission medium) of normalization such as power line or IEEE802.11.

Network in the domestic network system 1 by with internet network 2 are the networks that are separated from each other.That is, the network in the above-mentioned domestic network system 1 comprises the separate network that wired or wireless transmission medium connects.Here, though separate network comprises the network that the coupled situation that is in is physically separated in theory.

Domestic network system 1 comprises master control (Master) equipment, subordinate (Slave) equipment.Main control device can control apparatus equipment 40～49 or is monitored its operating state.Slave can be responded the request of main control device and the variation information of notice oneself state.This main control device comprises network manager 20～23, and slave comprises electric equipment 40～49.This network manager 20～23 comprises the information and the control code of the electric equipment 40～49 that will control, and programmed mode is carried out control operation, or receives after the information of LnCP server and/or customer equipment 4 inputs, carries out control operation.In addition, as shown in Figure 1, be connected with a plurality of network managers 20～23 o'clock, for carry out and other network manager 20～23 between exchange message, also for the synchronization of information and control, these network managers 20～23 not only can be main control devices but also can be slave.Promptly should be a kind of, from physical significance equipment just, but be to have master control simultaneously and from the equipment (being compatible equipment) of the function of dominant in theory.

In addition, these network managers 20～23 and electric equipment 40～49 can directly be connected on the network (power line network as shown in Figure 1, RS-485 network, RF network).In addition, can also connect by LnCP router three 0,31 and/or LnCP network adapter 35,36.

In addition, electric equipment 40～49 and/or LnCP router three 0,31 and/or LnCP network adapter 35,36 are registered on the network manager 20～23, and according to product information, receive unique theoretical address (for example 0x00,0x01 etc.).This theoretical address and product code (for example air-conditioning is ' 0x02 ', and washing machine is ' 0x01 ') in conjunction with after, use as node address (Node Address).For example, the identical node address by 0x02009 (air-conditioning 1) and 0x0201 (air-conditioning 2) is by electric equipment 40～49 and/or LnCP router three 0,31 and/or 35,36 identifications of LnCP network adapter.In addition, can also use by specific benchmark (product of the same race, product position, user etc. are set) group address that is provided with, can the more than one electric equipment 40～49 of disposable identification and/or LnCP router three 0,31 and/or LnCP network adapter 35,36 when using the group address.In this group address, this dominance group address is group (cluster) address of a plurality of customer equipment of appointment when being set at " 1 " address choice value (following is mark flag) in the dominance group address.The tacit declaration group address is added to " 1 " to all bits (byte) value of theoretical address and/or product code, and then can specify a plurality of customer equipments.Here, it is to be noted especially and be commonly referred to group's sign indicating number expressing the group address.

Domestic network system 1 can make network manager 20～23 by the interactive network control protocol (LnCP) among Fig. 2, LnCP router three 0,31, mutual transmission information between LnCP network adapter 35,36 and the electric equipment 40～49.And then, network manager 20～23, LnCP router three 0,31, LnCP network adapter 35,36 and electric equipment 40～49 are carried out network service by this LnCP.

As shown in Figure 2, LnCP comprises application software 50, application layer 60, network layer 70, data link layer 80, physical layer 90 and instrumental variable management level 100.The inherent function of application software 50 performance network managers 20～23LnCP router three 0, 31LnCP network adapter 35,36 and electric equipment 40～49.And the function that connects with application layer 60 is provided, so that on network, carry out remote operation and supervision.Application layer 60 provides service to the user, and has the function that is communicated to lower layer after information that the user is provided or the order composition information.Network layer 70 can be reliable network connecting between network manager 20～23LnCP router three 0, 31LnCP network adapter 35,36 and the electric equipment 40～49.Data link layer 80 provides the connection controlled function, is used to connect the common transmitted medium.Physical layer 90 provides network manager 20～23, LnCP router three 0,31, the rule of the physical interface between LnCP network adapter 35,36 and the electric equipment 40～49 and the bit (byte) that will transmit.The instrumental variable (node parameter) of the node that uses in instrumental variable management level 100 each layers of management configuration.

Detailed says, application software 50 also comprises network management subsidiary layer 51.Network management subsidiary layer 51 has the management node instrumental variable, and management is connected in the function of network manager 20～23LnCP router three 0, 31LnCP network adapter 35,36 and electric equipment 40～49 on the network.That is, this network management subsidiary layer 51 has a kind of function, can pass through instrumental variable management level 100, sets the node instrumental variable numerical value or the variable that utilizes the medium instrumental variable is managed.When the equipment that is applicable to LnCP was main control device, this network management subsidiary layer 51 also has fulfiled the function that constitutes network or supervising the network.

In addition, network layer 70 also comprises domestic code control subsidiary layer 71.Net connection has network manager 20～23, LnCP router three 0, 31LnCP network adapter 35,36 and electric equipment 40～49.When utilize power line or IEEE 802.11, non-independent shape transmission medium such as wireless (for example LnCP comprise power line communication (PLC) agreement/or during wireless (wireless) agreement) when constituting above-mentioned network, in order to divide each network in theory, the function of domestic code and managing family sign indicating number is set in 71 performances of domestic code control subsidiary layer.This domestic code control subsidiary layer 71 is because of independent shape transmission mediums such as picture RS-485, when separated, is not included among the LnCP individual networks on physical significance.This domestic code is formed with 4 bytes (byte), is set at random (random) value or user's set point.

Fig. 3 a is the interface schematic diagram of the interlayer of physical layer 90 when being connected to non-independent shape transmission medium.Fig. 3 b is the interface schematic diagram of the interlayer of physical layer 90 when being connected to independent shape transmission medium.

Domestic network system 1 is added to the head (header) of each layer needs and tail (trailer) information from the network protocol message unit (Protocol Data Unit:PDU) that upper layer receives, and is being communicated to lower layer.

As shown in the figure, APDU (Application layer PDU) is the data value (data) that transmits between application layer 60 and the network layer 70.NPDU (Network Layer PDU) is the data value that transmits between network layer 70 and data link layer 80 or the domestic code subsidiary layer 71.HCNPDU (Home Code ControlSublayer PDU) is the data value that transmits between network layer 70 (the definite domestic code subsidiary layer 71 of saying so) and data link layer 80 or the domestic code subsidiary layer 71.Press data value (data) between data link layer 80 and the physical layer 90, Frame unit forms interface.

Fig. 4 a is depicted as the APDU structure in application layer 60.

AL (APDU Length) territory is the territory of the length (AL is to the length of Frame group) of expression APDU, and minimum value is that 4 maximums are 77.

AHL (APDU Header Length) territory is the territory of the length (AL is to the length of ALO) of expression APDU head (header), is 3 bytes when not expanding, and can expand to 7 bytes.For the encipherment of Frame group, can expand to 7 bytes in the LnCP procotol in order to change APDU heads (header) such as application protocol.

ALO (Application Layer Option) territory is the territory that is used for extend information 3, and when for example this territory was set to " 0 ", information processing was out in the cold when other value was housed.

The Frame group is processing user's the control information or the territory of project information, and its structure is along with the variation of the contained value of ALO changes.

Fig. 4 b is the structure chart of the APDU in the network layer 70, and Fig. 4 c is the detailed structure view of the NLC among the NPDU.

SLP (Start of LnCP Packet) territory is the domain of expression packet, and its value is 0 x 02.

The territory of DA (Destination Address) and SA (Source Address) is the destination of the packet that will transmit and the node address of the side of delivering letters, and each is made of 16 bits.Here upper 1 bit is the mark (flag) of demonstration group address, the kind (product code) that ensuing 7 bits are product, and the next 8 bits comprise the theoretical address of getting.Have the network manager 20～23 of a plurality of same kinds or electric equipment 40～49 o'clock, above-mentioned the next 8 bits are used to divide above-mentioned each network manager 20～23 or electric equipment 40～49.

PL (Packet Length) territory is for showing the territory of the NPDU length overall that will transmit, and its minimum value is 12 bytes, and maximum is 100 bytes.

SP (Service Priority) territory is to give the territory that transmission information transmits priority bit, is made of 3 bits.Each transmits the priority picks such as the table 2 of information.

When the subordinate customer equipment is replied the request of master control customer equipment, the priority picks of the solicited message that retinue's master control customer equipment receives.

Table 2

The priority picks	Value	Be suitable for (Application Layer)
			High (High)	0	-when transmitting emergence message
In (Middle)	1	-when transmitting the general data bag-during the project information of the online and non-presence of transmissions map network (Online State) (Offline State) variation
			Standard (Normal)	2	-when transmitting notice and constituting the information of network-during transmission general item information
Low (Low)	3	-when transmitting the value according to the producer that downloads or upload

NHL (NPDU Header Length) territory is to be used for expanding the territory that NPDU head (header) (the NLC territory of SLP) uses, and is 9 bytes when not expanding, and maximum can expand to 16 bytes.

PV (Protocol Version) territory is the territory that shows 1 byte of the network protocol version that is adopted, and is made of upper 4 bits and the next 4 bits.Upper 4 bits are version (version) territory, and the next 4 bits are server version (sub-version) territory.Version (version) and server version (sub-version) are respectively with 16 systems mark method version of display.

NPT (Network layer Packet Type) territory is 4 bit field of dividing data bag kind in network layer.LnCP comprises request data package (Request Packet), reply data bag (ResponsePacket), notification data bag (Notification Packet).The NPL territory of master control customer equipment should be set at request data package or notification data bag, and the NPL territory of slave should be set at reply data bag or notification data bag.The NPT value of packet kind is as shown in table 3 below.

Table 3

Value	Explanation
		0	Request data package
1～3	Do not use
		4	The reply data bag
5～7	Do not use
		8	The notification data bag
9～12	Do not use
		13～15	The interface that connects with domestic code control subsidiary layer is worth with reservation

TC (Transmission Counter) territory is a network layer generation communication failure, in the time of can not successfully sending request data package or reply data bag, in order to improve the success rate that transmits request data package or reply data bag, transmission or 2 bit field of transmission more repeatedly.The destination can utilize the numerical value in TC territory, detects duplicate message.With the scope of the TC thresholding of NPT value with following table 4.

Table 4

The packet kind	Value (scope)
		Request data package	1～3
The reply data bag	1
		The notification data bag	1～3

PN (Packet Number) territory is made of 2 bits.In slave, be used with TC in order to detect repetitive data packet PN (Packet Number) territory.In the master control customer equipment, be used in order to handle a plurality of communication cycles.Scope with the PN territory of NPT value is as shown in table 5 below.

Table 5

The packet kind	Value (scope)
		Request data package	0～3
The reply data bag	The PN thresholding of duplicate requests packet
		The notification data bag	0～3

The APDU territory is the unit of the Internet protocol data value (data) of the application layer of transmission between application layer 60 and the network layer 70.The APDU minimum value is 0 byte, and maximum is 88 bytes.

CRC (Cyclic Redundancy Check) territory is 16 bit field for the mistake that detects data accepted bag (SLP is to the APDU territory).

ELP (End of LnCP Packet) territory is the territory of video data Bao Weiduan, and its value is 0x03.If receive with the data packet length territory in length corresponding data values (data), can not detect the ELP territory, then be shown packet error.

Fig. 4 d is the HCNPDU structure chart in the domestic code control subsidiary layer 71.

As shown in the figure, the last bit position of NPDU also comprises HC (Home Code) territory.

The numerical value of this domestic code is made of 4 bytes.This domestic code has unique value in the distance of the propagable circuit of packet.

Fig. 4 e is depicted as the structure chart of the Frame in the data link layer.

Head of the Frame of the data link layer of LnCP (header) and tail (trailer) form different structures according to transmission medium.When data link layer 80 was used the transmission medium of unnormalized, head of Frame (header) and tail should have Null territory (Null Field).As use normalized transmission medium, then with the regulation of procotol.The NPDU territory is the unit from the data value of upper network layer 70 transmission.The data value unit that HCNPDU used when being physical layer 90 for non-independent shape transmission medium such as power line or IEEE 802.11 is the data value unit of appending 4 byte domestic codes at the NPDU front end.Data link layer 80 is not divided the processing of NPDU and HCNPDU.

Fig. 4 f is the data frame structure figure in the physical layer 90.

The physical layer 90 of LnCP has the function that physical signalling is sent to transmission medium.As the physical layer 90 of LnCP procotol, the transmission medium of the unnormalized data link layer 80 that can use be equal to RS-485 or low power RF.The normalization transmission medium that can also use be equal to power line or IEEE 802.11.Be suitable in the domestic network system 1 of LnCP network, for network manager 20～23 and electric equipment 40～49 and RS-485 or LnCP router three 0,31 and LnCP adapter 35,36 connect, utilized the signal standards (level) of UART (Universal Asynchronous Receiver and Transmitter) data frame structure and RS-232.When utilizing netting twine (serial bus) to connect between each equipment, UART is at communication line control bit signal flow.Shown in Fig. 4 f, in LnCP, the packet that upper layer is sent here, be transformed into the UART Frame unit of 10 bit sizes after, transmit by transmission medium.The UART Frame is made of the start bit (Start Bit) of 1 bit, the data value (data) of 8 bits and the position of rest (Stop Bit) of 1 bit.Above-mentioned UART Frame does not use effect position (Parity Bit).The UART Frame is passed on position of rest to the end from passing on start bit.When the domestic network system 1 of suitable LnCP utilizes UART, do not use the data frame head (frame header) and the postamble (frametrailer) that append.

Below be to using the explanation of the node instrumental variable in above-mentioned layer.

A kind of corresponding in the type (type) of the data value of following node instrumental variable and a plurality of forms shown in the table 6.

Table 6

Mark	Form	Explanation
			char	signed char	When not expressing the length of value (data) is 1 byte
uchar	Unsigned char	When not expressing the length of value (data) is 1 byte
			int	signed int	When not expressing the length of value (data) is 2 bytes
uint	Unsigned int	When not expressing the length of value (data) is 2 bytes
			long	signed long	When not expressing the length of value (data) is 4 bytes
ulong	Unsigned long	When not expressing the length of value (data) is 4 bytes
			string	String	Last byte is the text line data of NJLL
FILE	-	Data with file structure

At first, application layer 60 has the user by application software 50 information conveyed or order, and generation information (Message) and APDU are transferred to it the function of the next network layer again, and the APDU that receives from the next network layer made an explanation, again its is passed function to application software 50.

The value of the node instrumental variable (Node Parameter) that application layer 60 is used is with table 7.

Table 7

Title	Form	Explanation
			The transmission intercal of address request information	constant uint AddressReqInt	After the input power supply obtains theoretical address value from network layer 70 at once, till the address when this value is designated as 0 x 00, press AddressReqInt

		Time (second) continues the transport address solicited message at interval.
			The campaign item transmission of Information at interval	Uint NP_AliveInt	Theoretical address as network layer 70 is not 0x00, then presses NP_AliveInt (second) at interval, the net connection state, continues transmission campaign item information.
The size of buffer (buffer)	Uchar NP_BufferSize	Can adorn the buffer sizes (unit is a byte number) of information.
			Serve overtime	Const uint SvcTimeOut	Application layer	60 waits for that solicited messages deliver letters time of (ReqMsgSend) primitive primitiv, and its value is 30 seconds.
Transmission intercal between download request information	Const uint DLInterval	After the application layer 60 of subordinate receives download request information, when failing to receive other download request information, the time interval of download service failure.

This network layer 70 has following function.

The 1st is address management function, and address management function is the function of the address of the network manager 20～23 that stores self address and destination or electric equipment 40～49.At this moment, use each the contained network manager 20～23 of address or the information and the positional information of each electric equipment 40～49, can specify the group address, and can support stereophonic FM broadcasting (multicasting) and broadcasting (broadcasting) communication.

The 2nd is the FLOW CONTROL function, the function of FLOW CONTROL function for flowing by communication cycles (cycle) control data bag.

The 3rd is wrong controlled function, and the mistake controlled function is transmitted the function of thresholding when failing to receive the reply data bag again in official hour.Again the number of transmissions maximum constraints is 3 times.

The 4th is affairs control (Transaction Control) function, and the affairs controlled function prevents the information that repeat fulfillment is same for by detecting repetitive data packet, and the function of the communication cycles of control while pilosity.

The 5th is the route controlled function, the route controlled function is more than two independently between transmission medium, transmits data packets, and in order to prevent the Infinite Cyclic (loop) between each LnCP router three 0～31 and the LnCP adapter 35～36, the function that flows of control data bag.

This network layer 70 is that unit provides service with the communication cycles.This communication cycles has { 1-Request, 1-Response}, { 1-Request, Multi-Responses}, { 1-Notification}, { four kinds of Repeated-Notification} etc.

{ 1-Request, the 1-Response} communication cycles is that a main control device transmits a request data package (Request Packet) to a slave, and slave transmits the communication cycles of a reply data bag (Request Packet) of corresponding above-mentioned request.

1-Request, and the Multi-Responses} communication cycles is that a main control device transmits a request data package to a plurality of slaves, each slave also transmits the communication cycles of the reply data bag of acknowledges requests packet successively.

The 1-Notification} communication cycles is that equipment (master control or subordinate) is object with one or more equipment (master control or subordinate), and transmit a notification data bag after, finish the communication cycles of communication at once.

The Repeated-Notification} communication cycles be the 1-Notification} communication cycles is in order to ensure transmission reliability, and transmit same packet repeatedly after, finish the communication cycles of communication.

Above-mentioned communication cycles and type of data packet and transmission service (or network layer service) are (NLservice) with table 8a.

Table 8a

Communication cycle	Type of data packet	Transmission service (NLService)
			{1-request， 1-response}	Request data package-reply data bag	Acknowledged(0)
{1-request， multi-response}	Request data package-reply data bag	Acknowledged(0)
			{1-notification}	The notification data bag	Not-acknowledged(1)
{Repeated -notification}	The notification data bag	Repeated-notification (2)

The value of the node instrumental variable (Node Parameter) that network layer 70 is used is with table 8b.

Table 8b

Title

Form

Explanation

Product code	Uchar ProductCode	The sign indicating number that gives for the standalone feature of gathering product.
			Theoretical address	Uchar NP_LogicalAddress	In order to distinguish a plurality of products with same product code, the address of 1 byte.
Group code	Uchar NP_ClusterCode	Distinguish the address of 1 byte of each equipment.
			Domestic code	Ulong NP_HomeCode	The address of 4 bytes of define equipment domestic code
Maximum is the number of transmissions repeatedly	Constant uchar SendRetries	Acknowledged when service, the maximum of request data package is seemingly when the number of transmissions or Repeated-notification service, repeatedly the number of transmissions
			Overtime transmission	Constant uint Send TimeOut	Network layer	70 is waited for the time of DLLCompleted unit (primitive) behind data link layer 80 transmission NPDU, thresholding is 1000ms.
Reply the delay time	Uint ResDelayTime	Be object when carrying out the Acknowledged service with the group address, receive before the slave transmission reply data bag of request data package the time of being delayed.The value that any (random) produces in 0～5000ms scope.
			The maximum relaying delay time	Constant uint RepeaterDelayTime	During the network operate as normal, before the normal data packet side of being received that spreads out of from the side of delivering letters received, in the maximum delay time (ms) of permission, this value was 5000ms.
The repetitive data packet elapsed time	Constant uint DupElapsedTime	When slave receives request data package continuously from same main control device, ensure independently minimum time interval between the request data package of each packet, this value is 10,000ms.

Data link layer 80 regulations are for the control medium that are connected to the common transmitted medium connect (MediumAccess Control:MAC) function.When using the transmission medium of unnormalized, use as the p-DCSMA (probabilistic-Delayed Carrier Sense MultipleAccess) of control near the procotol (Medium Access ControlProtocol) of medium with the same data link layer 80 of RS-485.During the identical normalization transmission medium of electrification line or IEEE 802.11, with corresponding network protocol specifies.

Table 9 is in the data link layer 80 of using the UART Frame, the value of the node instrumental variable (NodeParameter) of use.The time of each variable is that benchmark is set when being 4800bps with the transmission speed of physical layer 90.At this moment 1 IUT (Information Unit Time) is calculated as 2.1ms.

Table 7

Title	Form	Explanation
			Frame allows blanking time	Constant uchar FrameTimeOut	To allow the value of blanking time be 2IUT to the maximum of UART Frame when receiving packet.
Maximum allows blanking time	Constant uchar MaxFrame inter val	To allow the value of blanking time be 1IUT to the maximum of UART Frame when receiving packet.
			The minimum data bag allows blanking time	Uint MinPktInterval	Minimum permission value blanking time between the packet that transmits on the medium during transfer data packets is for more than the 5IUT.After the packet that data link layer 80 receives is communicated to application layer 60, finishes the processing required time and should be less than this value.
Restart number of times	Constant uchar BackOffRetries	The value of the maximum number of occurrence of MAC algorithm was 10 when competition failure or delivery value produced conflict
			The maximum transmission permission time	Constant uint MACExecTime	The permission of MACA algorithm is carried out time (ms) value and is 1000ms.
Occupy acknowledging time	Constant uchar BusyCheckTime	First for detecting the time of media state (idle or take), its value is 3IUT.

The transport delay time

Uint RandomDelayTime

When medium are in idle condition, the stand-by period that is used to transmit,, in selected competition window (Wc) scope, carry out selected arbitrarily according to the SvcPriority value.

The node instrumental variable that uses in the physical layer 90 is as shown in table 10.

Table 10

Title	Form	Explanation
			Communication speed	Unit NP_bps	Be the communication speed of UART, its initial value is 4800bps.

Fig. 5 a is that the primitive primitiv between each layer of main control device transmits schematic diagram.

Shown in Fig. 5 a, be used for the primitive primitiv between application software 50 and the application layer 60, use UserReq, UserDLReq, UserULReq, ALCompleted, UserRes, UserEventRcv.

User's request (UserReq) primitive primitiv is the service request primitive primitiv that is made of the single communication circulation that spreads out of from main control device application software 50, is used in operations such as control or supervision.This user's request (UserReq) primitive primitiv comprises the inscape of showing 11a.

Table 11a

Title	Form	Explanation
			The application service sign indicating number	Ulong ALSvcCode	Being application layer (60) application service sign indicating number, is the combination of product code and command code.
Solicited message	RequestMessage * ReqMsg	The solicited message that constitutes by command code and enter factor.
			Solicited message length	Uchar ReqMsgLength	The byte data length of RequestMessage
Destination address	Uint DstAddress	The destination device address
			The network layer service	Uchar NLService	The transmission type service 0:Request-response-message of network layer (70), 1:Request-message-only,

		2:Repeated-message, 3:Event-message-only.
			Time-out time	Uint TimeOut	When ALService is Request-response-message, it is the time (ms) of wait acknowledge packet after the main control device transmission request data package, or when ALService is Repeated-message, it is the time interval (ms) between continuous each information.
The service priority order	Uchar SvcPriority	The transmission order of priority of data link layer (80).

In the application layer services (ALService), request-reply information (Request-response-message) is the combination of solicited message and response message, be that the slave that receives this solicited message must send the service of response message after main control device sent solicited message.Separately solicited message (Request-message-only) is the service that solicited message is provided separately, is the service that the slave that receives solicited message does not send response message.Information (Repeated-message) provides continuous independent information or the service of project information separately repeatedly, is the service that slave does not send response message.Project information (Event-message-only) is the service that project information is provided separately separately, is the service that slave does not send response message.

User's download request (UserDLReq) primitive primitiv is the download service request primitive primitiv from main control device application software 50, comprises the inscape that table 11b shows.

Table 11b

Title	Form	Explanation
			The application service sign indicating number	Ulong ALSvcCode	Being application layer (60) application service sign indicating number, is the combination of product code and command code.
File in download	FILE * DownloadFile	This document has the data downloaded of needs
			The Application layer service	Uchar ALService=0	Be to transmit COS, be fixed to Request-response-message (0).

Destination address	Uint DstAddress	The destination device address
			Time-out time	Uint TimeOut	After main control device sends request data package, the time of wait acknowledge packet (ms).
The service priority order	Uchar SvcPriority	Be the transmission order of priority of data link layer (80), be fixed to ' 1 '.

User's upload request (UserULReq) primitive primitiv is the download service request primitive primitiv from main control device application software 50, comprises the inscape that table 11c shows.

Table 11c

Title	Form	Explanation
			The application service sign indicating number	Ulong ALSvcCode	Being application layer (60) application service sign indicating number, is the combination of product code and command code.
File upload	FILE * UploadFile	Be used to store will uploaded data filename.
			The Application layer service	Uchar ALService=0	Be to transmit COS, be fixed to Request-response-message (0).
Destination address	Uint DstAddress	The destination device address
			Time-out time	Uint TimeOut	After main control device sends request data package, the time of wait acknowledge packet (ms).
The service priority order	Uchar SvcPriority	Be the transmission order of priority of data link layer (80), be fixed to ' 1 '.

It is the primitive primitiv of the service execution result of main control device biography to application software 50 that the user replys (UserRes) primitive primitiv, comprises the inscape that table 11d shows.

Table 11d

Title	Form	Explanation
			The application service sign indicating number	Ulong ALSvcCode	Being application layer (60) application service sign indicating number, is the combination of product code and command code.
Response message	ResponseMess	By command code and response (return) because of

	Age*ResMsg	The response message that son constitutes.
			Response message length	Uchar ResMsgLength	The byte data length of ResponseMessage
The address, source	Uint SrcAddress	The method, apparatus address of delivering letters

User's project collection of letters (UserEventRcv) primitive primitiv is the project service primitive primitiv that passes to main control device application software 50, comprises the inscape that table 11e shows.

Table 11e

Title	Form	Explanation
			The application layer services sign indicating number	ALSvcCode	Be the application service sign indicating number of application layer (60), be combined to form by product code, command code and item code.
Project information	EventMesage * EventMsg	Project information from the slave reception.
			Project information length	Uchar EventMsgLength	ResponseMessage byte data length
The address, source	UintSrcAddress	The method, apparatus address of delivering letters

Application layer finishes (ALCompleted) primitive primitiv, the primitive primitiv of the execution result of main control device application layer 60 biography to application software 50, comprises the inscape that table 11f shows.

Table 11f

Title	Form	Explanation
			The application service sign indicating number	Ulong ALSvcCode	Being application layer (60) application service sign indicating number, is the combination of product code and command code.
Service result	Uchar ALResult	If successfully finish user's requested service, then be SERVICE-OK (1), if not, then be SERVICE_FAILED (0).
			Failure cause code	Uchar ALFailCode	When ALResult is SERVICE_FAILED, the value that failure cause is classified.

Shown in Fig. 5 a, be used for the primitive primitiv between Application layer 60 and the network layer 70, comprise ReqMsgSend, NLCompleted and MsgRev.

Solicited message (ReqMsgSend) primitive primitiv that delivers letters is, is used for information comprising the inscape shown in the table 12a from the primitive primitiv that main control device application layer 60 passes to network layer 70.

Table 12a

Title	Form	Explanation
			Communication cycles	Ulong	The identification numbering of communication circulation in the main control device
Solicited message	Uchar	Comprise in the main control device application layer 60 and to generate
			Solicited message is long	Uchar	The byte data length of APDU.
Destination address	Uint	The destination device address
			The address, source	Uint	The method, apparatus address of delivering letters
The network layer service	Uchar NLService	The communication cycles type 0:Acknowledged of main control device, 1:Non-acknowledged, 2:Repeated-notification.
			Reply time-out time	Uchar response Time Out	When NLService is chosen to Acknowledged, after main control device sends request data package, the time of wait acknowledge packet (ms).
Transmission between the notification data bag at interval repeatedly	Uint RepNotiInt	When NLService is chosen to Repeated-notification, the time interval (ms) between the continuous notification data bag.
			Service	Uchar	The transmission order of priority of solicited message.

Here, communication cycles identification side (CycleID) is combined to form by above-mentioned application service coding (ALSvcCode) and receiving apparatus node address (node Address).

Information (MsgRcv) primitive primitiv that collects mail is used for packet comprising the inscape of showing 12b from the primitive primitiv that main control device network layer 70 passes to application layer 60.

Table 12b

Title	Form	Explanation
			Communication cycles identification side	Ulong Cycle ID	The identification numbering of communication circulation in the main control device
The project response message	Uchar * ResEventAP DU	Will pass APDU to application layer 60.
			Project response message length	Uchar APDULength	The byte data length of APDU.
Destination address	Uint DstAddress	Destination's device numbering
			The address, source	Uint SrcAddress	The method, apparatus of delivering letters numbering

The formation of above-mentioned communication cycles identification side (CycleID) will be described below.

Network layer finishes (NLCompleted) primitive primitiv and is used for comprising the inscape of showing 12c from the primitive primitiv of network layer 70 to application layer notification data bag treatment state.

Table 12c

Title	Form	Explanation
			Communication cycles identification side	Ulong Cycle ID	The identification numbering of communication circulation in the main control device
Transmit the result	Uchar NLResult	If successfully finish communication cycles, CYCLE-OK (1) then; If not, CYCLE_FAILED (0) then.
			Failure cause code	Uchar NLFailCode	When NLResult is CYCLE_FAILED, the value that failure cause is classified.
Transmit number of times again	Uchar NLSuccessCode	The number of times of transmission again when NLResult is CYCLE_OK.

As shown in the figure, be used for the primitive primitiv between network layer 70 and the data link layer 80, comprise PktSend, PktRcv and DLLCompleted.

Packet (PktSend) primitive primitiv that delivers letters is used for packet is passed primitive primitiv to data link layer 80 from network layer 70, comprises the inscape of showing 13a.

Table 13a

Title	Form	Explanation
			Packet	Uchar *NPDU/ HCNPDU	The packet of network layer (70)
Data packet length	Uchar NPDULe ngth	The byte data length of NPDU/HCNPDU
			The service priority order	Uchar SvcPri ority	Transmit order of priority

Packet (PktRcv) primitive primitiv that collects mail is used for packet comprising the inscape of showing 13b from the primitive primitiv that data link layer 80 passes to network layer 70.

Table 13b

Title	Form	Explanation
			Packet	Uchar *PDU	The packet of network layer (70)
Data packet length	Uchar PDULength	The byte data length of PDU

Data link layer finishes (DLLCompleted) primitive primitiv and is used to notify from the primitive primitiv of data link layer 80 to the packet transmission result of network layer 70 transmission, comprises the inscape of showing 13c.

Table 13c

Title	Form	Explanation
			Packet transmits the result	Uchar DLLResult	Packet transmits the result: if the transmission of successful end data packet, then SEND_OK (1); If not SEND_FAILED (0) then.
The special delivery failure cause	Uchar DLLFailCode	When DLLResult is SEND_FAILED (0), the value that failure cause is classified.

As shown in the figure, the primitive primitiv that is used between data link layer 80 and the physical layer 90 comprises FrameSend, FrameRcv, RptLineStatus.

Frame (FrameSend) primitive primitiv that delivers letters is used for transmitting the primitive primitiv of 1 byte data from data link layer 80 to physical layer 90, comprises the inscape that table 14a shows.

Table 14a

Title	Form	Explanation
			Byte	UART_byte
	1 byte data

The Frame collection of letters (FrameRcv) primitive primitiv is used for comprising the inscape that table 14a shows from the primitive primitiv of physical layer 90 to data link layer 80 transmission 1 byte data.

It is that expression passes the primitive primitiv to the line status of data link layer 80 that line status is passed on (RptLineStatus) primitive primitiv, comprises the inscape that table 14b shows.

Title	Form	Explanation
			Line status	Uchar LineStatus	If circuit is (Busy) state that takies that exists the UART Frame, then transmit LINE_BUSY, if not, then transmit LINE_IDLE.

Fig. 5 b is the transmission flowsheet of each interlayer primitive primitiv of slave.

Shown in Fig. 5 b, be used for the primitive primitiv between application software 50a and application layer 60a, comprise UserReqRcv, UserResSend and UserEventSend.

The user asks the collection of letters (UserReqRcv) primitive primitiv to be used for the primitive primitiv of a solicited message that is received by main control device (comprise and downloading and operation) biography to the application software 50a of slave.Comprise the inscape shown in the table 15a.

Table 15a

Title	Form	Explanation
			The application service sign indicating number	ulong ALSvcCode	Being the service codes of application layer 60a, is the combination of product code and command code
Request msg	uchar *ReqData	Be included in the data of the solicited message that spreads out of by main control device
			The length of request msg	uchar ReqDataLength	ReqData long (byte)
The address, source	uint SrcAddress	The deliver letters address of method, apparatus

It is in order to respond the solicited message of main control device that the user replys (UserResSend) primitive primitiv that delivers letters, used primitive primitiv when response message is passed application layer to slave.Comprise the inscape shown in the following table 15b.

Table 15b

Title	Form	Explanation
			The application service sign indicating number	ulong ALSvcCode	Being the service codes of application layer 60a, is the combination of product code and command code
Reply data	uchar *ResData	Cover the data of biography to the response message of main control device
			Reply data length	uchar ResDataLength	The ResData byte length

User's project (UserEventSend) primitive primitiv that delivers letters is the slave project information state variable value that is used for desiring to main control device transmission, is transferred to the primitive primitiv of application layer 60a.Comprise the inscape shown in the following table 15c.

Table 15c

Title	Form	Explanation
			The application service sign indicating number	uchar ALSvcCode	Being the service codes of application layer 60a, is the combination of product code and command code
Application layer services	uchar ALService	Transmission COS 2:Repeated-message, 3.Event-message-only
			Item code	uint EventCode	Item code
State variable value	uchar *StateValue	The state variable value of project information

Shown in Fig. 5 b, the primitive primitiv between application layer 60a and network layer 70a comprises ReqMsgRcv, ResMsgSend, EventMsgSend and NLCompleted.

The solicited message collection of letters (ReqMsgRcv) primitive primitiv is used for from network layer 70a the primitive primitiv of the solicited message biography that receives to application layer.Comprise the inscape shown in the following table 16a.

Table 16a

Title	Form	Explanation
			Solicited message	uchar	Pass APDU to application layer 60a

	*ReqAPDU
			Solicited message length	uchar APDULength	The byte length of APDU
Destination-address	uint DstAddress	The deliver letters address of method, apparatus
			The address, source	uint SrcAddress	The deliver letters address of method, apparatus
The network layer service	uchar NLService	The communication cycles type 0:Acknowledged of slave, 1:Non-acknowled ged
			Repetitive data packet detecting result	uchar DuplicateChe ck	Be the repetitive data packet detecting result,, detect and be repetitive data packet DUPLICATED_PKT (0) then as normal NORMAL_PKT (1) then.

Response message (ResMsgSend) primitive primitiv that delivers letters is used at application layer 60a, and response message is passed primitive primitiv to network layer 70a.Comprise the inscape shown in the following table 16b.

Table 16b

Title	Form	Explanation
			The communication cycles recognin	ulong CycleID	The communication cycles identiflication number of slave
Response message	uchar *ResAPDU	Be included in the APUD of the response message that the application layer 60a of slave generates
			Response message length	uchar APDULength	The byte length of APUD

Project information (EventMsgSend) primitive primitiv that delivers letters is used for application layer 60a project information is passed primitive primitiv to network layer 70a.Comprise the inscape shown in the following table 16c.

Table 16c

Title	Form	Explanation
			The communication cycles recognin	ulong CycleID	The identiflication number of the communication cycles of slave
Project information	uchar	Be included in that slave application layer 60a generates

	*EventAPDU	The APDU of project information
			Project information length	uchar APDULength	The byte data length of APDU
Destination-address	uint DstAddres	The address of destination's equipment
			The address, source	uint SrcAddress	The deliver letters address of method, apparatus
The network layer service	uchar NLService	Transmission service 1:Non-acknowledged in network layer 70a, 2:Repeated-notification
			The length of announcement information repeatedly	uchar RepNotiInt	The time interval (ms) between the continuous announcement information when NLService is chosen as Repeated-notification
The service priority position	uchar SvcPriority	The transmission priority bit of project information

It is at network layer 70a that network layer finishes (NLCompleted) primitive primitiv, is used for the primitive primitiv to application layer 60a notification data bag treatment state.Comprise the inscape shown in the following table 16d.

Table 16d

Title	Form	Explanation
			The communication cycles recognin	Ulong CycleID	The communication cycles identiflication number of slave
Transmit the result	Uchar NLResult	Complete successfully as communication cycles, CYCLE-OK (1) then, otherwise, CYCLE_FAILED (0) then.
			The bust this reason	Uchar NLFailCode	When NLResult is CYCLE_FAILED, the identification reason is classified
The number of transmissions again	Uchar NLSuccessCode	CYCLE-OK the number of transmissions more constantly during NLResult

The operating position of each primitive primitiv between the network layer 70a of slave and data link layer 80a and data link layer 80a and physical layer 90a is identical with the operating position of each primitive primitiv of main control device among Fig. 5 a.

The setting situation of above-mentioned each instrumental variable and inscape is as follows.Maximum corresponding to data link layer 80 transmit data frames units allows the time (MACExecTime), is set to below 1 second (1000ms).Network layer 70 is from behind data link layer 80 transmission NPDU, receive data link layer and finish time till (DLLCompleted) primitive primitiv for transmitting time-out time (SendTimeOut), above-mentioned transmission time-out time (SendTimeOut) was set at below 1 second.Main control device when time-out time (TimeOut) is an application layer services (ALService) for Request-response-message transmits the time of wait acknowledge after the request data package, or the time interval (ms) between application layer services (ALService) each continuous information when being Repeated-message, above-mentioned time-out time (TimeOut) is set by the user.Service time-out time (SvcTimeOut) is to receive from the certain stand-by period after user's the service execution request from application layer 60, and above-mentioned service time-out time (SvcTimeOut) was set to below 30 seconds.

For allow whole domestic network system 1 with and inscape---the data volume smoothly in network manager 20-23, LnCP router three 0, 31LnCP adapter 35,36 and the electric equipment 40-49 is regulated, and the high data of stability transmit, maximum in above-mentioned each instrumental variable and the inscape transmits permission time (MACExecTime), transmission time-out time (SendTimeOut), time-out time (TimeOut) and service time-out time (SvcTimeOut), is configured to different value mutually by following formula.

Formula 1

MACExecTime PREC SendTimeOut PREC TimeOut PREC SvcTimeOut

As shown in Equation 1, maximum transmission permission time (MACExecTime) is less than transmitting time-out time (SendTimeOut), this is because maximum transmission permission time (MACExecTime) only is used for transmit data frames, transmitting time-out time (SendTimeOut) then is after NPDU is sent to data link layer, receives corresponding to the time till data link layer end (DLLCompleted) primitive primitiv that transmits the result.Because, after data link layer 80 is confirmed the transmission result (transmitting successfully or transmit failure) of Frame unit's transmission, generate above-mentioned data link layer and finish (DLLCompleted) primitive primitiv, again it is sent in the network layer 70.Therefore, transmit time-out time (SendTimeOut) and be greater than maximum the transmission permission time (MACExecTime).

Above-mentioned time-out time (TimeOut) is to be used for the stand-by period that application layer 60 transmits repeatedly or the time interval between solicited message and the response message, and transmit time-out time (SendTimeOut) is to be used for only confirming that a NPDU transmits result's the time interval, therefore, time-out time (TimeOut) is greater than and transmits time-out time (SendTimeOut).

Service time-out time (SvcTimeOut) is such as being, generate from solicited message and to begin the All Time carried out to user's request of comprising the response message collection of letters etc. or order, and time-out time (TimeOut) includes only the time interval of transmitting an information repeatedly, or includes only the mail collection time interval of response message.Therefore serving time-out time (SvcTimeOut) is greater than time-out time (TimeOut).

The invention effect

In sum, the present invention has following invention effect. Domestic network system of the present invention can be suitable for the general communication specification of using---control communication protocol, the above-mentioned general function that each electric equipment in control and the supervision domestic network system is provided with communication specification.

Domestic network system of the present invention can be used as general with communication specification employing interactive network control communication protocol (Living network Control Protocol:LnCP).

Domestic network system of the present invention can be set the size of each instrumental variable and inscape, can easily carry out data volume on the LnCP and regulate and obtain stable information and transmit.

Claims (6)

1, a kind of domestic network system, the above electric equipment that it connects with above-mentioned network system by certain network system, by specific communication protocol, by above-mentioned special communication protocol and above-mentioned net connection, and be used to control and monitor that the network manager of above-mentioned electric equipment forms;

Above-mentioned procotol comprises application layer, network layer, data link layer and physical layer, and the maximum that the Frame unit of setting data link layer transmits transmits the permission time; Set and transmit time-out time, it is that network layer is from behind data link layer transmission NPDU, to the time that receives till data link layer finishes primitive primitiv; Time-out time is set, and it is the time of wait acknowledge after the transmission request data package when request-response message of application layer, or the time interval between each continuous information when notifying repeatedly; The service time-out time is set, it is to receive from the certain stand-by period after user's the service execution request from application layer, it is characterized in that: the above-mentioned maximum transmission permission time is transmitted time-out time less than time-out time less than transmitting time-out time, and time-out time is less than the service time-out time.

2, domestic network system according to claim 1 is characterized in that: the above-mentioned maximum transmission permission time is below 1 second.

3, domestic network system according to claim 1 and 2 is characterized in that: above-mentioned transmission time-out time is below 1 second.

4, domestic network system according to claim 1 and 2 is characterized in that: time-out time is set by the user.

5, domestic network system according to claim 1 and 2 is characterized in that: the service time-out time is to set for below 30 seconds.

6, domestic network system according to claim 1 and 2 is characterized in that: above-mentioned communication protocol is interactive network control communication protocol.

Images