CN1943209A

CN1943209A - Communication network system and communication apparatus

Info

Publication number: CN1943209A
Application number: CN 200580011877
Authority: CN
Inventors: 迁本隆宏; 土田慎一; 新谷保之
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2004-04-20
Filing date: 2005-04-15
Publication date: 2007-04-04

Abstract

The present invention provides a communication network system in which communication can be securely performed via a global network from an existing terminal apparatus to an existing device connected to a local network without needing a special gateway function in a router and without performing a special setting in the router. In the communication network system (10), a communication relay client (202) performs polling on a management center network (1) via a NAT router (204); a communication relay server (102) converts a packet transmitted from a management terminal (101); and the communication relay client (202) receives the converted packet as a response to the polling via the NAT router (204) from the side of the management center network (1). The communication relay client (202) converts the converted packet to the original packet, and transmits the original packet to a device to be managed (201).

Description

Communications network system and communicator

Technical field

The present invention relates to communications network system and communicator by global network (global network) executive communication.

Background technology

According to traditional communication device and network, the global network as the internet is connected with fiber optic circuit by Asymmetrical Digital Subscriber Line (ADSL) with home network as certain localized network (local network).For example, home network is distributed in privately owned Internet protocol (IP) address, and private IP address and global ip address can be changed mutually with the network address translation (nat) function of router.In above-mentioned this net structure, the content that provides in World Wide Web (WWW) (WEB) server that can use the WEB browser that is installed on the personal computer (PC) that links to each other with home network to receive to link to each other with global network.Yet in above-mentioned this joint construction, because the standard of the nat feature of router, all connections must be initiated from the localized network end.

For example, under the situation of the household electrical appliance that link to each other with localized network the family from family's external management, the grouping of Simple Network Management Protocol (SNMP) need be sent to the household electrical appliance that link to each other with localized network from the office terminal of global network end, wherein SNMP is the agreement that is used for network management.

In addition, in this case above-mentioned, communication be the equipment that links to each other with localized network in the family and with equipment that global network links to each other between carry out.Like this, Content of Communication needs protected to prevent eavesdropping and to forge.

As the network of realizing initiating communication from the global network end to the localized network end, Japanese Laid-Open Patent Application No.2003-318944 (the 6th page Fig. 1) discloses and has been used for having the technology of the network of isolated area from a position Collective stewardship respectively for a plurality of nodes (base).Use above-mentioned this technology, even by the address of the device managed under situation overlapping between the node, still can supervising the network (for example, with reference to Japanese Laid-Open Patent Application No.2003-318944 (the 6th page, Fig. 1)).Fig. 1 illustrate as Japanese Laid-Open Patent Application No.2003-318944 (the 6th page, Fig. 1) in disclosed traditional communication device and network.

In Fig. 1, the encapsulation process unit 52 usefulness tunnel protocols of network management system 50 have encapsulated the SNMP grouping that generates in SNMP processing unit 51, and the SNMP grouping with encapsulation sends to node gateway 61 and 71 by the internet then.This node gateway 61 and 71 is opened encapsulation, and extracts original SNMP grouping.Thereby the SNMP grouping can be sent to the communicator 63 of intra-node net 62.Like this, the SNMP grouping can be sent to the localized network end from the global network end pellucidly, and can manage the device of being managed.

Summary of the invention

According to conventional construction, supposed that the node gateway is in accordance with specifying tunnel protocol.Be applied to from the global network end collectively under the situation of managing family network in conventional construction, family's NAT router provides the node gateway function.

Yet most of NAT routers are not observed tunnel protocol.Like this, the problem that exists the application of conventional construction to differ and realize surely.In addition, even observe under the situation of tunnel protocol at the NAT router, the setting operation that relates to tunnel protocol must user oneself be finished.And, there is such problem, promptly the user is forced to learn to relate to the advanced technology of the necessary network settings of setting operation.

Consider problem above-mentioned, an object of the present invention is to provide a kind of communications network system and communicator, rely on this communications network system and communicator, can be by global network from having terminal installation now to the existing equipment that links to each other with localized network executive communication safely, and do not need the special gateway function of router, and not be used in and carry out special setting in the router, this network connects global network and localized network by router.

In order to solve traditional problem, communications network system according to the present invention comprises first system and second system that connects by global network, and wherein said first system comprises: terminal installation is used for and devices communicating; With the first communication repeating device, this device links to each other with described terminal installation, be used for carrying out relaying by the communication of described global network between described terminal installation and described second system, described second system comprises: router apparatus is used to connect described global network and localized network; The equipment that links to each other and communicate by letter with described localized network with described terminal installation; With the second communication relay, this device links to each other with described localized network, be used for carrying out relaying by communicating by letter of described router apparatus and described global network between described equipment and described first system, the described first communication repeating device has: first communication unit is used to use first agreement to communicate by letter with described terminal installation; The second communication unit is used to use second agreement by described global network and described second system communication; With first converting unit, be used for grouped data is converted to second protocol packet data as changing grouping, and will change and divide into groups to send to described second communication unit, wherein this grouped data is that described first communication unit obtains from described terminal installation, and be used for grouped data is converted to first protocol packet data, and first protocol packet data sent to described first communication unit, wherein this grouped data is that described second communication unit obtains from described second system, described second communication relay has: third communication unit is used to use first agreement by localized network and devices communicating; Four-way letter unit is used to use second agreement and described first system communication; With second converting unit, be used for grouped data is converted to second protocol packet data, and second protocol packet data sent to described four-way letter unit, wherein this grouped data is to obtain in the described third communication unit slave unit, and to be used for changing packet switched be first protocol packet data, and first protocol packet data sent to described first communication unit, wherein this has been changed the described four-way of grouping letter unit and has obtained from described first system, and described second communication relay is used for sending predetermined packet of packets to described first system by described router apparatus, and described first system is used to send and has changed the transmission source address that is grouped into predetermined packet of packets.

Like this, in the communications network system that has comprised first system that connects by global network and second system, the second communication relay sends predetermined packet of packets to first system; First system sends packet data to the transmission source of grouping; And the second communication relay can be from first system's receiving block data.

As mentioned above, second communication relay receiving block data is as the response to the grouped data that sends from first system.In other words, can through router apparatus grouped data be sent to the second communication relay from first system end by global network.

In addition, after using first agreement grouped data to be sent from the terminal installation that links to each other with first system, first protocol packet data is converted to second protocol packet data by the first communication repeating device, and by global network this second protocol packet data is sent to second system.The second communication relay receives second protocol packet data that sends by the router apparatus that is connected to second system.And second protocol packet data is converted into first protocol packet data, is sent to equipment then.

In other words, the grouped data that sends from the terminal installation that links to each other with first system can be sent to the equipment that links to each other with second system pellucidly.

The result, can be by global network from having terminal installation now to the existing equipment that links to each other with localized network executive communication safely, and do not need the special routing function of router, and not be used in and carry out special setting in the router, this network connects global network and localized network by router.

According to communicator of the present invention and communications network system, can in global network and network that localized network is connected by router, provide communications network system and communicator, rely on this communications network system and communicator, can be by global network from having terminal installation now to the existing equipment that links to each other with localized network executive communication safely, and do not need the special routing function of router, and not be used in and carry out special setting in the router.Further information about the present techniques background

Be filed in the Japanese patent application No.2004-123930 and the disclosure that is filed in the Japanese patent application No.2004-318569 on November 1st, 2004 on April 20th, 2004, comprise specification, accompanying drawing and claims interior, by reference it is all incorporated into herein.

Description of drawings

By the following description that the accompanying drawing in conjunction with explanation specific embodiment of the present invention carries out the present invention, these and other purposes of the present invention, advantage, characteristic will become apparent.In the accompanying drawing:

Fig. 1 is the figure that the conventional communication networks unitary construction is shown;

Fig. 2 is the figure that illustrates according to the hardware construction of the communications network system of the embodiment of the invention;

Fig. 3 is the figure of general introduction that the example application of communications network system is shown;

Fig. 4 is the precedence diagram that the operation of NAT router is shown;

Fig. 5 is the net structure figure that the correspondence between office terminal and the quilt equipment of managing is shown;

Fig. 6 is the figure of example that the data configuration of SNMP grouping is shown;

Fig. 7 is the functional block diagram that the functional configuration of the equipment that links to each other with the administrative center network is shown;

Fig. 8 is the functional block diagram that the functional configuration of the equipment that links to each other with localized network is shown;

Fig. 9 is the figure that the general introduction of the information flow between each equipment that is included in the communications network system is shown;

Figure 10 is the precedence diagram that the operation that the communication repeating client computer carries out in obtaining the device id process is shown;

Figure 11 is the precedence diagram that the operation that the communication repeating client computer carries out in polling procedure is shown;

Figure 12 is the precedence diagram that the SNMP packet switched of communication repeating server execution and the triggering grouping transmit operation that triggering (trigger) server is carried out are shown;

Figure 13 is that the precedence diagram of asking transmit operation with SNMP is obtained in the grouping of changing that the execution of communication repeating client computer is shown;

Figure 14 is the figure that the example of the data configuration of changing grouping of communicating by letter between communication repeating client computer and the communication repeating server is shown;

Figure 15 illustrates the SNMP agency to send the precedence diagram of SNMP response to the operation of snmp management device;

Figure 16 is the functional block diagram that the functional structure of another equipment of being managed is shown;

Figure 17 is the precedence diagram that communication repeating client computer situation of query requests before the SNMP message queuing is finished is shown;

Figure 18 illustrates communication repeating server controls communication repeating client computer is made the sequential of inquiry to request the precedence diagram of example;

Figure 19 A, 19B, 19C are the figure that each communication pattern of SNMP request and SNMP response is shown;

Figure 20 is the functional block diagram of example that the functional configuration of the equipment that comprises the communication repeating client functionality and manage with the quilt of sensor communication function is shown;

Figure 21 is the figure of example that the structure of the sensing data that sends from transducer is shown;

Figure 22 is the precedence diagram that the operation that each equipment is carried out when SNMP agency sends to the snmp management device with the temperature value of sensor measurement is shown;

Figure 23 is the schematic diagram that the mode of N (N is a positive integer) individual transducer and the ground direct communication of sensor communication unit wireless is shown;

Figure 24 is the schematic diagram that the ad-hoc network of being made up of a plurality of transducers is shown;

Figure 25 is the figure of example that the structure of the sensing data that comprises positional information is shown;

Figure 26 is the functional block diagram of example that the functional configuration of the equipment that comprises the communication repeating client functionality and manage with the quilt of actuator (actuator) communication function is shown;

Figure 27 is the precedence diagram that the operation that each equipment is carried out when snmp management device request actuator changes preset temperature is shown;

Figure 28 is the schematic diagram that the mode that the individual actuator of N (N is a positive integer) and actuator communication unit wirelessly communicate by letter is shown; With

Figure 29 is the schematic diagram that the ad-hoc network of being made up of a plurality of actuators is shown.

Embodiment

Unitary construction according to communications network system of the present invention is described with reference to the accompanying drawings.

Fig. 2 is the figure that illustrates according to the hardware construction of the communications network system 10 of the embodiment of the invention.Communications network system 10 is to be used for by the system of global network 3 from administrative center's network 1 management equipment, and described equipment links to each other with localized network 2.

As shown in Figure 2, communications network system 10 comprises: global network 3, and this network can use as the internet so publicly; Localized network 2, this network forms in the local environment as family; With administrative center network 1, be used to manage equipment that is connected to localized network 2 etc.

For example, as shown in Figure 3, communications network system 10 can be applied in a kind of network system, and for example the such household electrical appliance of air conditioner are by coming Long-distance Control from family's peripheral operation terminal equipment in this network system, and described household electrical appliance link to each other with the family localized network.

Administrative center's network 1 is included in the example according to first system in the communications network system of the present invention.Administrative center's network 1 comprises: office terminal 101; Communication repeating server 102; With triggering server 103.Office terminal 101 is included in the example according to the terminal installation in the communications network system of the present invention.And communication repeating server 102 is the examples according to the first communication repeating device of the present invention.

Office terminal 101 is terminal equipments that the operator operates, and carries out and for example monitor the such management of equipment that links to each other with localized network 2 with setting.Communication repeating server 102 is to carry out the communication equipment of relaying to office terminal 101 with the communication between the equipment that localized network 2 links to each other.Trigger server 103 and be the address information of the equipment that storage links to each other with localized network 2 and notify from the communication equipment of the communication of administrative center's network 1 initiation to the equipment that links to each other with localized network 2.

Localized network 2 is included in the example according to second system in the communications network system of the present invention.And localized network 2 comprises: the equipment of being managed 201; Communication repeating client computer 202; With NAT router two 04.The equipment of being managed 201 is included in the example according to the equipment in the communications network system of the present invention.And communication repeating client computer 202 is the examples according to second communication relay of the present invention.

By the equipment 201 managed is the equipment that will be managed by the office terminal 101 that links to each other with administrative center network 1.And the equipment of being managed 201 has device id, and this device id is this equipment mark symbol of unique identification.Communication repeating client computer 202 is to carrying out the communication equipment of relaying by the equipment 201 managed with the communication between the equipment that administrative center network 1 links to each other.NAT router two 04 is the equipment that the communication between localized network 2 and the global network 3 is carried out relaying.The operation that relaying is carried out in above-mentioned communication that NAT router two 04 is carried out will use Fig. 4 to illustrate after a while.

Give be included in communications network system 10 in each communication equipment of linking to each other with administrative center network 1 of global network 3 distribute the address of unique each equipment of differentiation.

For example, the IP address is used in above-mentioned such field, distributes different IP addresses for each communication equipment.

Administrative center's network 1 links to each other with global network 3 by gateway, and this gateway is not shown in the accompanying drawings, the communication path between this gateway decision administrative center's network 1 and the global network 3.

With the IP address assignment of unique each equipment of differentiation give be included in communications network system 10 in each communication equipment of linking to each other of localized network 2.Here, as long as each communication equipment that links to each other with localized network 2 can be by unique differentiation in localized network 2, then the communication equipment that links to each other with localized network 2 can have the overlapping IP address of certain equipment that links to each other with global network.Only guarantee that partly these IP addresses of uniqueness are called the localized network address.On the other hand, the IP address of distributing to each communication equipment that links to each other with administrative center network 1 with global network 3 is called the global network address, and separates with the localized network address area.

As mentioned above, the global network address is assigned to the equipment that all link to each other with administrative center network 1 with global network 3.In other words, administrative center's network 1 is the part of global network 3.Like this, the equipment that links to each other with administrative center network 1 with the devices communicating process that links to each other with localized network in be the equipment that links to each other with global network 3.

Localized network 2 links to each other with global network 3 by the NAT router two 04 with mutual conversion localized network address and global network address function.Because so as mentioned above connection, by the operation that NAT router two as described below 04 is carried out, the communication equipment that links to each other with localized network 2 can communicate at IP layer and the equipment that is connected to global network 3 and administrative center's network 1.

Fig. 4 is the precedence diagram that the operation of NAT router two 04 execution is shown.The operation that NAT router two 04 is carried out will use Fig. 4 to describe.Here in order to describe the operation that NAT router two 04 is carried out, suppose following environment: send source device 2a and link to each other, and transmission destination device 3a links to each other with the global network end with the localized network end of NAT router two 04.In NAT router two 04, distribute the global network address to the global network end, and distribute the localized network address to the localized network end.

Here, as an example, distributing 1.2.3.4 is the global network address, is the localized network address and distribute 192.168.0.1.As an example, 192.168.0.3 is assigned to as the localized network address and sends source device 2a, and 5.6.7.8 is assigned to transmission destination device 3a as the global network address.Much less, the concrete numerical value of these addresses is not confined in the above-mentioned example.

When sending source device 2a transmission grouping to transmission destination device 3a, the transmission source address of this grouping is 192.168.0.3, is 5.6.7.8 and send destination address.

When grouping was sent to global network by NAT router two 04, NAT router two 04 was rewritten as the transmission source address of grouping the global network address 1.2.3.4 (S10) of NAT router two 04 from the localized network address 192.168.0.3 that sends source device 2a.Reach when sending destination device 3a when being grouped into, send destination device 3a and grouping is regarded as sent from NAT router two 04.Like this, send destination device 3a and generate respond packet as required, and respond packet is returned to NAT router two 04.

Here, the transmission source address of respond packet is the global network address 5.6.7.8 that sends destination device 3a, and the transmission destination address of respond packet is the global address 1.2.3.4 of NAT router two 04.When NAT router two 04 receives this respond packet, NAT router two 04 will send destination address and be rewritten as the localized network address 192.168.0.3 (S11) that sends source device 2a, and respond packet is sent to transmission source device 2a.Like this, just set up the communication that sends between source device 2a and the transmission destination device 3a.

For the transmission destination address with respond packet is rewritten as the address that sends source device 2a, NAT router two 04 comprises ATT, and localized network address and global network address are interrelated in this table.

In other words, when from sending source device 2a when sending grouping that destination device 3a sends through NAT router two 04, sending the localized network address of source device 2a and send the global network address of destination device 3a will be by interrelated and be stored in the ATT.When the response packet that sends is returned, corresponding related with reference to the ATT search, and obtain and the localized network address of the equipment that send to the response packet that sends is promptly sent the localized network address of source device 2a.

NAT router two 04 is the localized network address of the transmission source device 2a that obtains by the global network address rewrite of NAT router two 04 with the transmission destination address of respond packet.

As transport layer protocol, under the situation of using transmission control protocol (TCP), keep the transmission source that is stored in the ATT and send address correlation between the destination, be cut off up to connection.Under the situation of using User Datagram Protoco (UDP) (UDP), in predetermined period, keep the address correlation that is stored in the ATT.After the predetermined period, deletion is stored in this address correlation in the ATT from NAT router two 04.

As mentioned above, from sending destination device 3a to the communication that sends source device 2a, address transition is based on that the ATT that is included in the NAT router two 04 carries out.Therefore, in the localized network address that sends source device 2a with send association between the global network address of destination device 3a and be not kept under the situation in the NAT router two 04, communication can not be carried out.In other words, characteristic as the communication of carrying out through NAT router two 04, the communication of initiating from localized network 2 ends to global network 3 ends through NAT router two 04 is simple, but the communication of initiating from global network 3 ends to localized network 2 ends through NAT router two 04 is difficult.

Yet, in the communications network system 10 of embodiments of the invention, by waiting a moment the operation of the execution such as triggering server 103 grades that will use Figure 11 description, can be through 04 communication of initiation of NAT router two from global network 3 ends to localized network 2 ends.

Fig. 5 illustrates office terminal 101 and by the figure of the equipment 201 interconnective net structures managed.

The SNMP grouping is transmitted with the equipment of being managed 201 in office terminal 101, manages the equipment of being managed 201 like this.To use Fig. 5 to describe the general introduction of the communication of carrying out between office terminal 101 and the quilt equipment of managing 201.

Here, in order to describe the general introduction of communication between office terminal 101 and the quilt equipment of managing 201, situation below supposing: office terminal 101 and the equipment of being managed 201 directly interconnect by network 6, and as shown in Figure 5, structure shown in Figure 5 is different with the structure of Fig. 2.Each equipment can be by their directly identification mutually of address.

Office terminal 101 is terminal equipments that the operator operates, and carries out such as monitoring and the such management of the equipment managed 201 is set.And office terminal 101 comprises: snmp management device 4 and manager end communication unit 1011.

The equipment of being managed 201 is the equipment with office terminal 101 management.And the equipment of being managed 201 comprises SNMP agency 5 and agent side communication unit 2011.Here, comprised unshowned other processing units among Fig. 5 by the equipment 201 managed, but these processing units be for simplify describe and in Fig. 5 the abridged.The functional configuration of the equipment of being managed 201 will use Fig. 8 to describe after a while.

The communication protocol of using between office terminal 101 and the quilt equipment of managing 201 is SNMP.SNMP is the agreement that is used for managing network device, and information is to transmit with the form of as shown in Figure 6 SNMP grouping.

Fig. 6 is the example that the data configuration of SNMP grouping is shown.As shown in Figure 6, the SNMP grouping comprises SNMP message and UDP header.The SNMP message is by forming with the lower part: the SNMP version of having stored the snmp protocol version; Group (community), its group's name of having stored the equipment of being managed is to authenticate manager; With the SNMP PDU that has stored actual request details and response details.

The snmp management device 4 that is included in the office terminal 101 generates SNMP message (hereinafter being also referred to as " SNMP request "), and this message comprises the such request details of state of for example obtaining the equipment of being managed 201.And snmp management device 4 sends to SNMP agency 5 with the form that SNMP divides into groups by manager end communication unit 1011, network 6 and agent side communication unit 2011 with the SNMP message.

SNMP agency 5 monitors the state of the equipment of being managed 201, and carries out such as the value of obtaining state variable and the such processing of value that state variable is set according to the SNMP message in the SNMP grouping that is included in reception.In addition, SNMP agency 5 returns to snmp management device 4 with SNMP message (hereinafter being also referred to as " SNMP response "), and this message has comprised such as the such response details of result with the form of SNMP grouping.

In other words, in the server/client model, the SNMP agency 5 who is included in the equipment of being managed 201 is servers, and the snmp management device 4 that is included in the office terminal 101 is client computer.

As mentioned above, office terminal 101 and transmitted the SNMP grouping, equipment 201 that like this can 101 management are managed from the office terminal by the equipment managed 201.For example, the preset temperature of air conditioner can change from the terminal installation that comprises snmp management device 4 by network, and this air conditioner is included among the SNMP agency 5.

In communications network system shown in Figure 2 10, communication terminal 101 and not directly intercommunication mutually of the equipment of being managed 201.Yet the packet switched of carrying out by communication repeating server 102 and communication repeating client computer 202 etc. can be transmitted the SNMP grouping transparent and safely.To the operation that each equipment be included in the communications network system 10 is carried out when the SNMP packet communication be described with Fig. 9 to 15 after a while.

Next, will use Fig. 7 and 8 to describe the functional configuration that is included in each equipment in the communication network 10.

Fig. 7 is the functional block diagram that the functional configuration of each equipment that links to each other with administrative center network 1 is shown.As shown in Figure 7, office terminal 101, communication repeating server 102 and trigger server 103 and link to each other with administrative center network 1.

As shown in Figure 5, office terminal 101 is management and the terminal equipment that the equipment of being managed 201 is set, and comprises snmp management device 4 and manager end communication unit 1011.

Communication repeating server 102 is to provide the equipment of server capability to being included in snmp management device 4 in the office terminal 101, and with packet relay to the communication repeating client computer 202 that links to each other with localized network 2.

Communication repeating server 102 comprises: server end communication unit 1021, its executive communication; Protocol conversion server 1022, it is provided server capability for snmp management device 4 and obtains with treatment S NMP and divide into groups; Family's PERCOM peripheral communication server 1023, itself and protocol conversion server 1022 transmit grouping, and communicate with the communication repeating client computer 202 that links to each other with localized network 2; With trigger request transmitting element 1024, it sends the trigger request grouping that is used to ask to trigger transmission to triggering server.

Protocol conversion server 1022 has realized being included in the communication function that has according to first communication unit in the first communication repeating device of the present invention.And family's PERCOM peripheral communication server 1023 has realized being included in the communication function that has according to the second communication unit in the first communication repeating device of the present invention.In addition, protocol conversion server 1022 and family's PERCOM peripheral communication server 1023 have realized being included in the protocol conversion function that has according to first converting unit in the first communication repeating device of the present invention.

Trigger server 103 and be the address information of having stored the equipment 201 that the quilt that links to each other with localized network 2 manages and communication repeating client computer 202 is obtained the equipment of the time announcement of the grouping that comprises the SNMP request to communication repeating client computer 202 from communication repeating server 102.

Triggering server 103 comprises: trigger end communication unit 1031, its executive communication; Trigger request receiving element 1034, it receives the trigger request grouping that the trigger request transmitting element 1024 from be included in communication repeating server 102 sends; Poll receiving element 1035, it receives the poll groupings that sends from communication repeating client computer 202; Global address table 1037, it is with device id and global network address correlation and store that this is related, and this device id belongs to the equipment of being managed 201, and this global network address belongs to NAT router two 04, and this device id and global network address obtain from poll groupings; With triggering transmitting element 1036, it sends and triggers grouping to communication repeating client computer 202.

Trigger server 103 inquiry global address tables 1037, and discern the global network address of NAT router two 04 according to the device id of the equipment of being managed 201.

Fig. 8 is the functional block diagram that the functional configuration of each equipment that links to each other with localized network 2 is shown.As shown in Figure 8, NAT router two 04, linked to each other with localized network 2 with communication repeating client computer 202 by the equipment 201 managed.

As using Fig. 4 described, NAT router two 04 is the equipment that comes the communication between localized network 2 and the global network 3 is carried out relaying by the function of mutual conversion localized network address and global network address.

The equipment of being managed 201 is will be by the equipment of office terminal 101 management.And the equipment of being managed 201 comprises: as shown in Figure 5 SNMP agency 5 and agent side communication unit 2011; Find packet transmission unit 2018, it sends the relaying client computer and finds to divide into groups to find communication repeating client computer 202; With device id Dispatching Unit 2019, its transmitting apparatus ID gives communication repeating client computer 202, and this device id is the identifier that distributes in advance for unique identification comprises SNMP agency 5 equipment.

Communication repeating client computer 202 be to be included in SNMP agency 5 in the equipment of being managed 201 provide client functionality, and the packet relay that will send from communication repeating server 102 to the equipment of the equipment of being managed 201.

Communication repeating client computer 202 comprises: client-side communication unit 2021, its executive communication; Protocol conversion client computer 2022, its (i) provides client functionality to SNMP agency 5, and (ii) the packet switched that will obtain from communication repeating server 102 is the SNMP grouping, and (iii) sends SNMP and be grouped into SNMP agency 5; Family's PERCOM peripheral communication client computer 2023, it is communicated by letter with communication repeating server 102; Poll transmitting element 2025, its (i) send to poll groupings and trigger server 103, the device id of the equipment 201 that this poll groupings notice is managed and the global network address of NAT router two 04, and (ii) make NAT router two 04 memory address conversion table; Trigger receiving element 2026, it receives from triggering the triggering grouping that server 103 sends; Local address table 2027, it is used for and will be associated by the device id and the local network address of the equipment 201 managed, and specifies the equipment of being managed 201 according to device id; Find grouping receiving element 2028, its received communication relaying client computer is found grouping; With device id acquiring unit 2029, its receiving equipment ID.

Protocol conversion client computer 2022 has realized being included in the communication function that is had according to the third communication unit in the second communication relay of the present invention.And family's PERCOM peripheral communication client computer 2023 has realized being included in according to the letter of the four-way in the second communication relay of the present invention communication function that the unit had.In addition, protocol conversion client computer 2022 and family's PERCOM peripheral communication client computer 2023 have realized being included in the protocol conversion function that is had according to second converting unit in the second communication device of the present invention.

To next use Fig. 9 briefly, use Figure 10 to 15 to be described particularly by the operation that each equipment that is included in the communications network system 10 of constructing as mentioned above according to present embodiment is carried out.

Fig. 9 is when being illustrated in the equipment 201 that office terminal 101 management managed, promptly, when the such SNMP message of for example SNMP request and SNMP response is transmitted, be included in the figure of the general introduction of the information flow between each equipment in the communications network system 10 between office terminal 101 and the quilt equipment of managing 201.

In communication is under situation about carrying out between localized network 2 and the administrative center's network 1, and information is always transmitted through NAT router two 04.Here, describe as using Fig. 4, global network address and localized network address be conversion mutually in NAT router two 04.Yet,, in the description of using Fig. 9, omitted the operation that NAT router two 04 is carried out in order to simplify description.In addition, the SNMP message has added UDP header, and with the form transmission of SNMP grouping.

[1] equipment of being managed 201 is notified to communication repeating client computer 202 with its device id.Concrete operations will use Figure 10 to describe.

[2] communication repeating client computer 202 sends to poll groupings and triggers server 103, the device id of the equipment 201 that this poll groupings notice is managed and the global network address of NAT router two 04.

According to poll groupings above-mentioned, the global network address of the localized network 2 under the device id of the equipment 201 that 103 affirmations of triggering server are managed and the equipment of being managed 201.And, trigger server 103 with device id and global network address correlation, and store this related information.Based on canned data, trigger server 103 and can information be sent to the equipment that links to each other with localized network 2 through NAT router two 04.Use to trigger server 103 and carry out from the office terminal communicating by letter of 101 that initiate and the equipment of being managed 201.Concrete operations will use Figure 11 to describe after a while.

[3] SNMP request 101 sends to communication repeating server 102 with the form of SNMP grouping from the office terminal.102 requests of communication repeating server trigger the SNMP acquisition request that server 103 is indicated to communication repeating client computer 202, and this communication repeating server 102 has the 101 SNMP groupings that receive from the office terminal.Then, triggering server 103 will trigger grouping and send to communication repeating client computer 202, and this triggering grouping is the indication of obtaining the SNMP request from communication repeating server 102.Concrete operations will be described with Figure 12 after a while.

[4] communication repeating client computer 202 request communication repeating servers 102 obtain the grouping of conversion that comprises the SNMP request, and this communication repeating client computer 202 has received and triggered grouping.Then, communication repeating server 102 generates has changed grouping, and will change grouping and send to communication repeating client computer 202, this has changed grouping is to encapsulate and generate by will be included in SNMP message in the SNMP grouping with HTTP(Hypertext Transport Protocol).Communication repeating client computer 202 is extracted the SNMP message from the grouping of conversion that receives, and the SNMP message is sent to the equipment of being managed 201 with the form that SNMP divides into groups.Concrete operations will use Figure 13 to describe after a while.

[5] equipment of being managed 201 is carried out SNMP according to the SNMP request in the SNMP grouping that is included in reception and is handled.And the SNMP response that the equipment of being managed 201 will respond the SNMP request sends to communication repeating client computer 202 with the form that SNMP divides into groups.Communication repeating client computer 202 generates to have changed grouping and will change grouping and sends to communication repeating server 102, and this has changed grouping is to encapsulate and generate by using HTTP will be included in SNMP response in the SNMP grouping.Communication repeating server 102 extracts SNMP response from the grouping of conversion that receives, and the SNMP response of extracting is sent to office terminal 101 with the form that SNMP divides into groups.Office terminal 101 obtains SNMP response from the SNMP grouping that receives, and finishes SNMP communication.Concrete operation will use Figure 15 to describe after a while.

To [5] described information flow, office terminal 101 can send to the equipment of being managed 201 with the SNMP request according to above [1], and receives SNMP response from the equipment of being managed 201.In other words, can be from the office terminal 101 initiate the management carried out through NAT router twos 04 to the equipment 201 managed.

Here, in the information flow of [4] and [5], that is, and in the communicating by letter of SNMP between administrative center's network 1 and localized network 2 request and SNMP response, communication is carried out in global network 3 with Secure Hypertext Transfer Protocol (HTTPS), has therefore guaranteed the communication security in global network 3.

Figure 10 to 15 is the precedence diagram of the information flow details shown in [1] to [5] above illustrating and the figure that the structure of communication data is shown.The operation that each equipment in the communications network system 10 that is included in is carried out will use Figure 10 to 15 to describe in the following order.

Figure 10 is the precedence diagram that the operation that the equipment 201 managed and communication repeating client computer 202 carry out when communication repeating client computer 202 is obtained the device id of the equipment of being managed 201 is shown.The information flow that [1] among Figure 10 and Fig. 9 is described is consistent.To use Figure 10 to describe the operation that communication repeating client computer 202 is carried out, the localized network address of the equipment 201 that this communication repeating client computer 202 will be managed be carried out related with device id and is stored related information into local address table 2027.

After being connected to localized network 2, being included in discovery packet transmission unit 2018 in the equipment of being managed 201 and will being used to find that the communication repeating client computer of communication repeating client computer 202 finds that grouping sends to a plurality of addresses (S101) by the equipment 201 managed and communication repeating client computer 202.

When communication repeating client computer 202 is connected to by the identical network of the equipment managed 201 time, the discovery grouping receiving element 2028 received communication relaying client computer that are included in the communication repeating client computer 202 are found grouping (S102).

Find that grouping receiving element 2028 sends to device id acquiring unit 2029 with triggering, this trigger notice communication repeating client computer is found to divide into groups to receive.After receiving triggering, device id acquiring unit 2029 sends to the equipment of being managed (S103) with the device id request of obtaining.

Obtain request back (S104) receiving device id, the device id Dispatching Unit 2019 that is included in the equipment of being managed 201 sends to communication repeating client computer 202 (S105) with its device id.

Behind the device id that receives the equipment of being managed 201 by device id acquiring unit 2029 (S106), the device id of the equipment 201 that communication repeating client computer 202 will be managed and the association store between the local network address (S107) in the table 2027 of local address.

According to above-mentioned steps, communication repeating client computer 202 can be based on device id by inquiring about the localized network address that local address table 2027 obtains the equipment 201 managed.In other words, receive in communication repeating client computer 202 under the situation of the SNMP request of specifying the device id of issuing managed devices 201, communication repeating client computer 202 can send to the equipment of being managed 201 with the SNMP request.

Figure 11 is the precedence diagram that the operation that communication repeating client computer 202 carries out in polling procedure is shown.The information flow that [2] among Figure 11 and Fig. 9 illustrate is consistent.To describe the operation of communication repeating client computer 202 with Figure 11, these communication repeating client computer 202 polls trigger server 103.

The poll transmitting element 2025 that is included in the communication repeating client computer 202 sends to poll groupings the poll receiving element 1035 (S201) that is included in the triggering server 103.Poll groupings is to send to the global network end from the localized network end, therefore executive communication easily.The data cell of poll groupings comprises the device id of the equipment 201 that one or more quilts that link to each other with localized network 2 manage.

In addition, when poll groupings process NAT router two 04, the transmission source address of poll groupings is rewritten as the global network address of NAT router two 04 by NAT router two 04.

After receiving poll groupings (S202), the transmission source address of the grouping that poll receiving element 1035 will receive, be the address of NAT router two 04, related with the device id of each equipment of being managed 201 in being included in data cell, and store this related information (S203).In other words, under the device id of the equipment 201 that two quilts are managed was included in situation in the data cell of poll groupings, the number that writes the clauses and subclauses in the global address table 1037 also was two.

Here, the poll transmitting element 2025 that is included in the communication repeating client computer 202 sends the form of poll groupings with the UDP grouping.Send poll groupings by form, can reduce traffic load with the UDP grouping.In addition, after sending poll groupings, poll transmitting element 2025 retransmits poll groupings when more Zao than the deadline of deletion related information, this related information is stored in the ATT in the NAT router two 04, is the association between the localized network address of communication repeating client computer 202 and the global network address of triggering server 103.

Like this, the association between the global network address of the localized network address of communication repeating client computer 202 and triggering server 103 always is stored in the ATT that is comprised in the NAT router two 04.In other words, send in appointment under the situation of triggering grouping with the arbitrary timing transmission of the communication repeating client computer 202 that links to each other with localized network 2, NAT router two 04 can will trigger grouping based on ATT and be sent to communication repeating client computer 202.

With following description operation, this operation is when the process NAT router two 04 that divides into groups from the triggering that triggers server 103 transmissions is sent to communication repeating client computer 202, the operation that each equipment is carried out.

Being included in the triggering transmitting element 1036 that triggers in the server 103 will trigger form that grouping divides into groups with UDP and send to the triggering receiving element 2026 that is included in the communication repeating client computer 202 as the response (S204) to poll groupings.Send the triggering grouping by form, can reduce traffic load with the UDP grouping.

NAT router two 04 receives and triggers grouping (S205), and obtains the localized network address (S206) that conduct sends the communication repeating client computer 202 of destination by the inquire address conversion table.And NAT router two 04 will trigger the localized network address (S207) that grouping is sent to the communication repeating client computer of obtaining 202.

As the result of aforesaid operations, the triggering receiving element 2026 of communication repeating client computer 202 can receive from the triggering server 103 of global network 2 ends and trigger grouping (S208).

As mentioned above, triggering grouping is to send to localized network 2 ends from global network 3 ends.Yet triggering grouping is to send as the response to poll groupings.Therefore, according to step S205 shown in Figure 11, S206 and S207, NAT router two 04 can be sent to communication repeating client computer 202 with triggering grouping.According to above-mentioned steps, triggering server 103 can will trigger grouping with arbitrary timing and send to communication repeating client computer 202.

Here, triggering grouping is to be present in grouping in the communication repeating server 102 to the 202 notice SNMP requests of communication repeating client computer.After receiving the triggering grouping, communication repeating client computer 202 can be obtained the SNMP request from communication repeating server 102, and the request that will obtain sends to the equipment of being managed 201.In other words, according to triggering the triggering grouping that server 103 sends, the equipment that links to each other with global network 3 and with the communication between the equipment that localized network 2 links to each other can be with the equipment initiation of arbitrary timing from linking to each other with global network 3.

Figure 12 is the precedence diagram that the SNMP packet switched operation of communication repeating server 102 execution is shown and triggers the triggering grouping transmit operation of server 103 execution.And Figure 12 is consistent with the information flow shown in Fig. 9 [3].To use Figure 12 to describe the operation that each equipment is carried out.Described operation is 101 to begin to carry out when generating the SNMP request in the office terminal, when the existing of communication repeating client computer 202 notified SNMP requests till.

The operator is 101 execution scheduled operations in the office terminal.And, the snmp management device 4 that is included in the office terminal 101 generates the SNMP request, the request details that this request expression is used to manage the equipment of being managed 201, and the SNMP request sent to the protocol conversion server 1022 (S301) that is included in the communication repeating server 102 with the form of SNMP grouping.

Here, the transmission destination of the SNMP grouping of snmp management device 4 transmissions is communication repeating servers 102.Yet, be included in the equipment 201 that the final transmission destination of the SNMP message in the SNMP grouping is managed.Like this, will communication repeating server 102 employed appointment SNMP agencies' 5 method be described.

In order to specify SNMP agency 5, the information distribution that snmp management device 4 must will be used to specify the equipment 201 that the quilt that comprises SNMP agency 5 manages arrives communication repeating server 102.Yet as shown in Figure 6, the field itself that is used for above-mentioned information is not present in the SNMP message.Therefore, device id is just added and is stored in the group's field that is included in the SNMP message as the information of designated equipment.

Particularly, many snmp management devices all distribute group's name with the form of character string.The binary expression formula of device id is a character string by the BASE64 code conversion.Character string is to generate before appending to original group name by the device id with the BASE64 coding.Here, in the binary expression formula of device id, the byte sequence order can and send between the destination different in the transmission source.Therefore, byte sequence is standardized into the predetermined bite sequence order in proper order, carries out the BASE64 coding then.

In other words, device id is stored in group's field, and this group's field is present in the frame format of SNMP grouping.Therefore, general snmp management device can use device id to come management equipment.Like this, the snmp management device does not need specific function.

The protocol conversion server 1022 that is included in the communication repeating server 102 receives the SNMP request (S302) that snmp management device 4 sends by server end communication unit 1021.Next, separate in the SNMP message of protocol conversion server 1022 from the SNMP grouping that is included in reception and obtain device id, and carry out such as rewriting and be included in the such processing (S303) of field length in the SNMP message.

The above-mentioned packet transaction process of following execution.The device id and the original group name of at first, separating the BASE64 coding.Then, by the BASE64 decoding device id of BASE64 coding is changed back the binary expression formula of original device ID.Protocol conversion server 1022 obtains device id by above-mentioned processing.After that, protocol conversion server 1022 is rewritten as original group name with group's field of the SNMP message of reception, and the stored part of device id that deletion BASE64 encodes from the SNMP message.

Here, group's field length and total packet length have been changed.Like this, each field that is used to store group's field length and total SNMP message length is rewritten into correct value.

Protocol conversion server 1022 sends to family's PERCOM peripheral communication server 1023 and trigger request transmitting element 1024 with the device id that obtains.And protocol conversion server 1022 uses the communication between the inter-process etc. that the SNMP message is sent to family's PERCOM peripheral communication server 1023, has deleted device id and field length etc. is rewritten as correct value in this SNMP message.Family's PERCOM peripheral communication server 1023 with the SNMP message queuing that receives to the formation zone that is included in family's PERCOM peripheral communication server 1023.

Next, the trigger request transmitting element 1024 that is included in the communication repeating server 102 sends to the trigger request grouping trigger request receiving element 1034 (S304) that is included in the triggering server 103.Here, the global address of the device id of the equipment of being managed 201 and communication repeating server 102 is stored in the data cell of trigger request grouping.

Receive trigger request grouping back (S305), trigger request receiving element 1034 search global address tables 1037 are searched the device id in the data cell that is stored in the trigger request grouping, and obtain the global network address of the NAT router two 04 related with this device id.Be included in the triggering grouping that the triggering transmitting element 1036 that triggers in the server 103 will comprise the global network address of communication repeating server 102 and send to the global network address (S306) that obtains.

Above-mentioned triggering grouping is to send to localized network 2 ends through NAT router two 04 from global network 3 ends.As mentioned above, NAT router two 04 can obtain the localized network address of communication repeating client computer 202 by the inquire address conversion table.Like this, NAT router two 04 will trigger grouping and be sent to communication repeating client computer 202.And the triggering receiving element 2026 that is included in the communication repeating client computer 202 receives triggering grouping (S307).

As mentioned above, trigger the global network address that grouping comprises communication repeating server 102.Communication repeating client computer 202 can specify the SNMP that need obtain to ask existing equipment based on this global network address, and this communication repeating client computer 202 has the triggering grouping that receives according to above-mentioned steps.

Figure 13 illustrates the precedence diagram that changing of communication repeating client computer 202 execution divides into groups to obtain operation and SNMP request transmit operation.Figure 13 is consistent with the information flow shown in Fig. 9 [4].To use Figure 13 to describe the operation that each equipment is carried out.Receive triggering grouping beginning executable operations from communication repeating client computer 202, till the equipment of being managed 201 receives the SNMP request.

Be included in triggering receiving element 2026 in the communication repeating client computer 202 and receive and trigger grouping (S307) afterwards, be included in the grouping that the family's PERCOM peripheral communication client computer 2023 in the communication repeating client computer 202 changed grouping with acquisition request and send to the family's PERCOM peripheral communication server 1023 (S308) that is included in the communication repeating server 102.

The grouping that acquisition request has been changed grouping is to use the GET method to send with the form of HTTP request.In addition, HTTPS as communication protocol, forgery, deception and eavesdropping have been avoided thus.

Receive acquisition request and changed the grouping of grouping (S309) afterwards, family's PERCOM peripheral communication server 1023 generates the grouping of conversion as shown in figure 14.This has been changed to be grouped in the entity and has comprised: the SNMP message that the communication between the usefulness inter-process etc. receives and lines up; The management information that comprises call duration time, successful communication and failure etc.And having changed grouping is the http response that has added http header.The device id of the equipment of being managed 201 is stored in the http header part.

The grouping of changing that family's PERCOM peripheral communication server 1023 will generate sends to communication repeating client computer 202 as the response packet of acquisition request having been changed grouping, receives this grouping (S310) from communication repeating client computer 202.

Here, the grouping of acquisition request having been changed grouping sends to communication repeating server 102 from communication repeating client computer 202,, sends to global network 3 ends through NAT router two 04 from localized network 2 ends that is.Therefore, executive communication easily.To change grouping and send to communication repeating client computer 202, that is, send to localized network 2 ends from global network 3 ends through NAT router two 04 from communication repeating server 102.Yet, be to send therefore executive communication easily as the response packet of acquisition request having been changed grouping owing to changed grouping.

Family's PERCOM peripheral communication client computer 2023 receptions that are included in the communication repeating client computer 202 have been changed grouping as http response (S311).Communication between family's PERCOM peripheral communication client computer 2023 usefulness inter-process etc. sends to protocol conversion client computer 2022 with the SNMP message, wherein the SNMP message comprises the device id of asking details and extracting from the HTTP head, and this SNMP message is stored in the entity part of changing grouping.

Protocol conversion client computer 2022 search local address tables 2027 are searched device id, and obtain the localized network address of the equipment 201 managed.Protocol conversion client computer 2022 joins UDP header in the SNMP message, and generates SNMP grouping (S312), then the SNMP grouping is sent to the localized network address (S313) of the equipment of being managed 201.

According to above-mentioned steps, the SNMP grouping can be sent to the equipment of being managed 201 safely, this SNMP grouping 101 transmissions from the office terminal.

Figure 15 illustrates the SNMP agency 5 who is included in the equipment of being managed 201 to send the precedence diagram of SNMP response to the operation that is included in the snmp management device 4 in the office terminal 101, and wherein SNMP response is to the SNMP request responding.Figure 15 is consistent with the information flow shown in Fig. 9 [5].To use Figure 15 to describe the operation that each equipment is carried out, receive SNMP request beginning executable operations from the equipment of being managed 201, till office terminal 101 receives SNMP response.

After the equipment of being managed 201 receives the SNMP grouping, the SNMP grouping is sent to SNMP agency 5 (S314) by agent side communication unit 2011.Receive after the SNMP grouping, SNMP agency 5 handles (S315) according to the request details execution SNMP that is included in the SNMP grouping.And SNMP acts on behalf of 5 SNMP responses that generate as result, and SNMP response is sent to the protocol conversion client computer 2022 (S316) that is included in the communication repeating client computer 202.

Receive from by the SNMP of the equipment 201 managed grouping (S317) afterwards, the SNMP message during the SNMP that the communication between protocol conversion client computer 2022 usefulness the inter-process etc. will be included in reception divides into groups sends to family's PERCOM peripheral communication client computer 2023.

Family's PERCOM peripheral communication client computer 2023 stores the SNMP message that receives in the entity into, and generates the HTTP grouping (S318) of having changed grouping conduct use POST method.Then, family's PERCOM peripheral communication client computer 2023 usefulness HTTPS will change grouping and send to the family's PERCOM peripheral communication server 1023 (S319) that is included in the communication repeating server 102.Here, having changed grouping is to send to global network 3 ends through NAT router two 04 from localized network 2 ends, therefore executive communication easily.

Receive as the grouping of conversion (S320) of HTTP grouping afterwards, family's PERCOM peripheral communication server 1023 is from entity extraction SNMP message, and this SNMP message is sent to protocol conversion server 1022 with the communication between the inter-process etc.

Protocol conversion server 1022 joins UDP header in the SNMP message of reception, and generates SNMP grouping (S321).In addition, be grouped into the identical method of communication repeating server 102 with sending request with snmp management device 4, protocol conversion server 1022 appends to the device id of BASE64 coding on group's name, and the group's name that will add the device id of BASE64 coding stores in group's field of SNMP message, then the SNMP grouping sent to snmp management device 4 (S322).

Snmp management device 4 receives SNMP grouping (S323).In other words, snmp management device 4 receives the SNMP response corresponding to the SNMP request that sends, and finishes SNMP communication.

As mentioned above, in the communications network system 10 according to the embodiment of the invention, in fact NAT router two 04 uses its original function.In other words, in order to carry out the communication of describing in embodiments of the present invention, NAT router two 04 does not need the special gateway function, and need not carry out special setting operation on NAT router two 04.

In addition, communication repeating client computer 202 sends to poll groupings and triggers server 103, and notifies the global address of localized network 2 and the device id of the equipment 201 that quilt is managed.Therefore can use and trigger the initiation that triggering grouping that server 103 sends will 101 communications of carrying out that are used to manage the equipment of being managed 201 from the office terminal and be notified to communication repeating client computer 202.

In addition, in communications network system 10, snmp management device 4 is to exist as the client computer in the global network 3, and SNMP agency 5 is to exist as the server in the localized network 2.

In above-mentioned communication network, by executive communication, client computer-relationship server uses and changes mutually as the NAT router two 04 on border in this communication, promptly, the communication repeating server 102 that is set to the server in the global network 3 by execution be set to localized network 2 in the communication repeating client computer 202 of client computer between communicating by letter of following of protocol conversion, can be through NAT router two 04 from snmp management device 4 to SNMP agencies 5 executive communications pellucidly, wherein snmp management device 4 is a client computer in global network 3, and SNMP agency 5 is a server in localized network 2.

In other words, the grouping that office terminal 101 and the equipment of being managed 201 send and receives is the SNMP grouping, but should grouping use HTTPS to transmit in global network 3.Therefore, do not need to consider office terminal 101 and by the communication path between the equipment of managing 201, the SNMP grouping can be transmitted safely.

As a result, by global network 3 can carry out safely from the office terminal 101 that initiate, to the communication of the equipment of being managed 201.

In an embodiment of the present invention, communication repeating client computer 202 and be as independent device description by the equipment 201 managed.Yet, other situation is also arranged.For example, as shown in figure 16, the equipment of being managed 201 can comprise the function as communication repeating client computer 202.

Can communicate by letter in order to make between SNMP agency 5 and the protocol conversion client computer 2022, the equipment of being managed 201 comprises intercommunication unit 20110.As intercommunication unit 20110, for example, to have used such as the such interface of local loopback interface, the communication of this interface is closed device external.Yet, other possibility is arranged.For example, intercommunication unit 20110 can realize in agent side communication unit 2011, and the communication that can be carried out device interior by intercommunication unit 20110.In this case above-mentioned, protocol conversion client computer 2022 and SNMP agency 5 can be interrelated one to one.Therefore, local address table 2027 not necessarily.

As mentioned above, for example, use the user under the situation of the household electrical appliance comprise equipment 201 functions of being managed and communication repeating client computer 202 functions, the user does not need to be equipped with extraly communication repeating client computer 202.And, only by household electrical appliance being connected to family's localized network, the user just can be by global network from the outside management of carrying out household electrical appliance of family etc.

In addition, in communications network system 10, only be confined at the object with office terminal 101 communication under the situation of the equipment that links to each other with localized network 2 etc., triggering server 103 not necessarily.

For example, communication repeating client computer 202 sends packets to communication repeating server 102 through NAT router two 04.Communication repeating client computer 202 can be stored the global network address of NAT router two 04 according to the transmission source of grouping.Like this, be under the situation about sending in the SNMP grouping from office terminal 101, as above change the SNMP grouping.Then, will change grouping and send to transmission source address, and will change and divide into groups to send to NAT router two 04.In this case above-mentioned, communication repeating client computer 202 can receive as the grouping of conversion to the response packet that sends to communication repeating server 102 from communication repeating client computer 202.The grouping of conversion that communication repeating client computer 202 will receive as above is converted to the SNMP grouping, and according to being included in the device id of changing in the grouping SNMP grouping is sent to the equipment of being managed 201.

In addition, for example, the global network address that office terminal 101 can obtain NAT router two 04 according to the grouping that sends from communication repeating client computer 202, and the global network address that obtains sent to communication repeating server 102.In other words, can construct communications network system 10 so that the global network address that the equipment that links to each other with administrative center network 1 can obtain NAT router two 04, and communication repeating client computer 202 can receive as the grouping of conversion to the response packet that sends.

As mentioned above, structure that can streamlining management central site network 1, and can reduce hardware resource.

In addition, in communications network system 10, as Figure 13 and 15 described, receive and trigger after the grouping from triggering server 103, communication repeating client computer 202 is obtained a SNMP request from communication repeating server 102.After that, when office terminal 101 receives as to the SNMP response of SNMP request responding the time SNMP sign off.

In the above-described embodiments, after communication repeating client computer 202 received next triggering grouping, next SNMP request was processed.Yet communication repeating client computer 202 can ask communication repeating server 102 not wait for the next reception that triggers grouping to obtain the SNMP request.In other words, communication repeating client computer 202 grouping that can sequentially acquisition request have been changed grouping sends to communication repeating server 102.

Using as being used in the communication that the SNMP of agreement of managing network device carries out, for example, obtain under the situation of a plurality of information from the SNMP agency at the snmp management device, it is that a plurality of SNMP requests corresponding with described a plurality of information do not send at one time that a kind of situation is arranged, but send a SNMP request, then, after the SNMP response that receives corresponding to the SNMP request, send next SNMP request again.In other words, a plurality of SNMP requests sequentially send in order.

In order to solve the problem that this SNMP request sends in proper order, 202 employed by the communication repeating client computer, being used for sequentially sending acquisition request, to have changed the said method of the grouping of grouping be useful.According to this method, the treatment effeciency that is included in each equipment in the communications network system 10 can improve, and described each equipment relates to the management of the equipment of being managed 201.In this case above-mentioned, if receiving SNMP, communication repeating client computer 202 asks non-existent notice, then can ending request obtain the transmission of the grouping of changing grouping.

In addition, if communication repeating client computer 202 sequentially sends the grouping that acquisition request has been changed grouping, then communication repeating server 102 can be controlled and send regularly.Manager 4 from be included in office terminal 101 receives after the SNMP grouping, and the SNMP message in 102 pairs of SNMP groupings of communication repeating server is carried out the processing as sweep equipment ID.SNMP message queuing after communication repeating server 102 will be handled.As shown in figure 17, it is that the grouping that acquisition request has been changed grouping is to send from communication repeating client computer 202 before the queuing of SNMP message is finished that a kind of situation is arranged, and this grouping is the inquiry to request.In this case above-mentioned, although received the SNMP grouping, the queuing of SNMP message is not finished, and communication repeating client computer 202 is given in the response that therefore sending expression " does not have request ".

Figure 17 illustrates to return after the SNMP request responding, the next precedence diagram that arrives the request of communication repeating server 102 of communication repeating client computer 202 inquiries.

As shown in figure 17, the communication repeating client computer 202 conversion grouping that will comprise SNMP response sends to communication repeating server 102 (S400).Change grouping the SNMP message that extract as SNMP response of communication repeating server 102 from receiving, and the SNMP message that extracts sent to the snmp management device 4 (S410) that is included in the office terminal 101.

Communication repeating client computer 202 receives as the reception response (S420) that receives the notice of changing grouping from communication repeating server 102.

Received (S430) after the SNMP grouping that comprises next SNMP request the inquiry (S440) that communication repeating server 102 receives about next one request from communication repeating client computer 202 from snmp management device 4 at communication repeating server 102.

Yet, at this constantly, do not finish, and communication repeating client computer 202 (S450) is arrived in the response of returning expression and " not have to ask " as the queuing of the SNMP message of SNMP request.

In other words, during from the 102 reception SNMP groupings (S430) of communication repeating server, (S460) finished in queuing to the SNMP message, at query requests (S440), promptly, acquisition request has been changed the grouping of grouping by under the situation about sending from communication repeating client computer 202, does not finish owing to changed the queuing of grouping, returns to communication repeating client computer 202 so communication repeating server 102 will be represented the response of " not having request ".

In this case above-mentioned, be useful by communication repeating server 102 employed said methods, these communication repeating server 102 control communication repeating client computer 202 send the timing that acquisition request has been changed the grouping of grouping.Figure 18 is the precedence diagram that the example of such control is shown.

As shown in figure 18, receive SNMP grouping (S430) afterwards at communication repeating server 102, under the situation that the queuing of communication repeating client computer 202 query requests and SNMP message is not finished, the response that communication repeating server 102 " does not have request " for communication repeating client computer 202, but return " wait for and asking " in response, " waiting for request " expression request one period scheduled time of wait obtains and changes grouping (S445).

Received " waiting for request " afterwards, communication repeating client computer 202 is waited for one period scheduled time (S446), query requests (S470) then.At this constantly, (S460) finished in queuing, and can obtain SNMP request (S480).

Above the scheduled time, be to wait for when communication repeating client computer 202 obtaining the time of changing when dividing into groups, can be based on that actual measured value and logical value decide.In addition, having time enough to make to be grouped under the situation about sending between communication repeating server 102 and the communication repeating client computer 202, the time of this wait can be " 0 second ".In other words, can determine the Best Times of wait for control communication repeating client computer 202.

In this case above-mentioned, the number of times that the request of wait sends is once.And, receiving the acquisition request that is associated with once the wait request of sending, send after at the fixed time at communication repeating server 102 has changed under the situation of grouping of grouping, when SNMP message that communication repeating server 102 does not have to send, communication repeating server 102 is made the response of " not having request ".Like this, SNMP sign off.

Here, the condition that the request of waiting for is sent to communication repeating client computer 202 can not be to receive the SNMP grouping but such condition is not finished in the queuing of SNMP message, and can be also not receive the SNMP grouping or such condition is not finished in the processing that is included in the SNMP message in the SNMP grouping, that is, communication repeating server 102 does not have the SNMP message as the such condition above-mentioned of information that can send to communication repeating client computer 202.

In addition, can decide the request of wait to send according to the details of the SNMP request that rigidly connects receipts before the communication repeating server 102.For example, details in the SNMP request that rigidly connects receipts is under the situation of SNMP appointment " GetNextRequest (obtaining next request) " or " GetBulkRequest (obtaining request in batches) ", even when communication repeating server 102 does not have to send to the SNMP message of communication repeating client computer 202, communication repeating server 102 also can be predicted SNMP grouping and will sequentially be sent from snmp management device 4, and can be in response to sending the request of wait from communication repeating client computer 202 about the inquiry of request.

In addition, for example can control communication repeating client computer 202, replace controlling communication repeating client computer 202 according to the stand-by period according to the quantity that the request of wait sends.In other words, when communication repeating server 102 did not have to send to the SNMP message of communication repeating client computer 202, communication repeating server 102 repeated to send the request of wait with the inquiry about request of response from communication repeating client computer 202.After the quantity that the wait request of described repetition sends has reached specified quantity, when received be associated with the wait request that rigidly connects receipts at the fixed time after the acquisition request that sends when having changed the grouping of grouping, do not have at communication repeating server 102 under the situation of the SNMP message that can send, communication repeating server 102 can be made the response of " not having request ".

As mentioned above, communication repeating server 102 control communication repeating client computer 202 send the timing that acquisition request has been changed the grouping of grouping.Like this, dividing into groups at the SNMP that comprises the SNMP request is under the situation about sequentially sending from office terminal 101, for the processing that each SNMP request is carried out, does not finish SNMP communication, but can ask to carry out this processing to SNMP efficiently.

In addition, use UDP to carry out SNMP communication, and re-transmission control is carried out on application layer.After the SNMP request was sent to communication repeating server 102, snmp management device 4 did not have to receive under the situation of the SNMP response related with the SNMP request in the given time, and snmp management device 4 retransmits the SNMP message.

Figure 19 A, 19B and 19C are illustrated in the SNMP response of communication between snmp management device 4, communication repeating server 102 and the communication repeating client computer 202 and the figure of each communication pattern that SNMP asks.When SNMP grouping is when transmitting between each equipment, this SNMP grouping comprises the SNMP message, i.e. SNMP request or SNMP response as mentioned above, are carried out packet switched and processing to the SNMP message.Yet,, omit illustrating and describing of this processing at this in order to simplify description.

Shown in Figure 19 A, the SNMP request " request 01 " that sends from snmp management device 4 queues to communication repeating server 102." request 01 " of queuing is sent to communication repeating client computer 202, shown in Figure 19 B.

" request 01 " sent to after the equipment of being managed 201, and communication repeating client computer 202 receives the SNMP response " response 01 " that is associated with " request 01 ", and " response 01 " sent to communication repeating server 102.

Here,

snmp management device

4 and 102 asynchronous operations of communication repeating server.Therefore, shown in Figure 19 C, although the response " response 01 " that is associated with " request 01 " sends from communication repeating client computer 202, but because snmp management device 4 does not receive " response 01 " in transmission " request 01 " scheduled time afterwards, snmp management device 4 retransmits " request 01 "." request 01 " that communication repeating server 102 requeues and retransmits, and " request 01 " that will requeue sends to communication repeating client computer 202.As a result, snmp management device 4 receives the response " response 01 " to " request 01 " that retransmits.Yet, received " response 01 ", thereby abandoned.

As mentioned above, although the agency of the SNMP in being included in the equipment of being managed 201 5 sends under the situation of SNMP response, SNMP response does not arrive snmp management device 4 in the given time, and snmp management device 4 retransmits the SNMP request of the details of expression request SNMP response.In addition, as SNMP request responding, retransmit SNMP response from SNMP agency 5 to retransmitting.In other words, the SNMP of processing asks and is transmitted with the SNMP response that SNMP asks to be associated redundantly.

Here, after communication repeating server 102 has received the SNMP request, send under the situation of identical SNMP request, the SNMP request that sends later can be abandoned.In this case above-mentioned, UDP communication is to carry out in identical network, between snmp management device 4 and communication repeating server 102, and https traffic is carried out between communication repeating server 102 and communication repeating client computer 202.In other words, can highly keep the certainty that grouping sends.

Like this, no matter the type of snmp management device or re-transmission are provided with, can avoid the redundancy communication that divides into groups.

In addition, according to embodiments of the invention, SNMP is as the communication protocol of client computer-server communication, that is, and and (i) communication between office terminal 101 and the communication repeating server 102 and (ii) communication repeating client computer 202 and by the communication between the equipment of managing 201.Yet, also can use other agreements for example HTTP and TELNET.For example, Simple Object Access Protocol (SOAP) can be stored in the communication protocol standard of data in the remote machine as visit, and wherein SOAP uses HTTP etc. as underlying protocol, and sends and receive the message based on simple extend markup language (XML).

Like this, according to the foregoing description, communications network system is described as an example, and this communications network system is used for remote management apparatus.Yet communications network system 10 can be used as other and makes and be used for using.For example, the computer that can link to each other with localized network by the terminal operation that links to each other with global network, and the equipment that (ii) links to each other and cooperate with the application between the equipment that localized network links to each other with global network from the device start (i) that is connected to global network.In this case above-mentioned, communication repeating server 102 and communication repeating client computer 202 can the converts communications groupings etc.

In addition, different IP addresses is assigned to each communication equipment so that can distinguish each equipment uniquely, and wherein said each communication equipment is connected to global network 3 and administrative center's network 1.Yet such address is not limited to the IP address, but, for example, also can use packet switching between net (IPX) address, as long as information is to be provided to identify each equipment that links to each other with global network 3.

In addition, trigger request is grouped in the device id of having stored the equipment of being managed 201 in the data cell, and this trigger request grouping sends to from communication repeating server 102 and triggers server 103.Yet, not only device id, other information also can be stored in the data cell, as long as this information makes that triggering server 103 can discern the equipment of being managed 201.For example, can determine the equipment 201 managed and trigger index value between the server 103 that this index value uses the secure path as HTTPS to be linked to device id.And this index value can be stored in the data cell of trigger request grouping, can send then to trigger grouping.

Like this, the quantity that device id sends in administrative center's network 1 can be reduced, and the secret protection of device id can be improved.

In addition, trigger the global network address that grouping comprises communication repeating server 102, this triggering grouping sends to communication repeating client computer 202 from triggering server 103.Yet, can use other information except that the global network address, URL for example is as long as this information can identify communication repeating server 102 in global network 3.In addition, the equipment that has SNMP request therein always under the situation of communication repeating server 102, does not need to comprise address information.Like this, can reduce the capacity that triggers grouping.

In addition, index value can be with the secure path between communication repeating server 102 and the communication repeating client computer 202, HTTPS for example, and global network address or the URL(uniform resource locator) (URL) with communication repeating server 102 links in advance.And trigger grouping and can comprise this index value.

Like this, can improve the secret protection of the global network address of communication repeating server 102.

In addition, trigger the device id that grouping can comprise the equipment of being managed 201, the equipment of wherein being managed 201 is destinations of SNMP request.Like this, before obtaining the SNMP request, the equipment 201 notice SNMP requests that communication repeating client computer 202 can be managed to quilt in advance will arrive.Therefore, the equipment of being managed 201 can be prepared in advance.

In addition, use the GET method, changed the grouping of grouping with the form transmission acquisition request of HTTP request.But, also can use POST method etc.

In addition, changed the grouping of grouping and changed being grouped in when transmitting between communication repeating client computer 202 and the communication repeating server 102 in acquisition request, used HTTPS as communication protocol.Yet for example (Pretty Good privacy, PGP) such cryptographic means is guaranteed can use other communication protocols, for example HTTP and file transfer protocol (FTP) (FTP) under the situation of secret protection of packet delivery using for example excellent privacy.In this case above-mentioned, acquisition request has been changed the grouping of grouping can take the form relevant with communication protocol.

Like this, for example, it is possible choosing the communication protocol that can easily set up communication environment.And can improve the flexibility of hardware/software design when setting up communications network system 10.

In addition, in the communications network system according to the embodiment of the invention, transducer can be connected to the equipment of being managed 201, and office terminal 101 can obtain by sensor measurement or detected information by the equipment of being managed 201.

Figure 20 is the functional block diagram of example that the functional configuration of the equipment 201 that comprises communication repeating client computer 202 functions and manage with the quilt of sensor communication function is shown.

As shown in figure 20, following structure is arranged, in this structure, sensor communication unit 2020 and management information bank (MIB) 7 added in the functional configuration of the equipment 201 that quilt as shown in figure 16 manages by the equipment 201 managed.

Sensor communication unit 2020 is the examples according to the sensor information acquiring unit in the communications network system of the present invention, and is the processing unit that is used for one or more sensor communications.Sensor communication unit 2020 and the individual sensor communication of N (N is a positive integer), N transducer be the first sensor 21 that is connected respectively to network 12, second transducer 22 ... with N transducer 29.Communication protocol for example is SNMP.

Here, in the equipment 201 that quilt is as shown in figure 20 managed, protocol conversion client computer 2022 and family's PERCOM peripheral communication client computer 2023 have realized being included in the sending function that is had according to the sensor information transmitting element in the communications network system of the present invention.In addition, SNMP agency 5 arbitration functions that judging unit had that realized being included in according in the communications network system of the present invention.

MIB 7 is included in the example according to the memory cell in the communications network system of the present invention, and be storage with by the relevant information of the equipment managed 201 with from the database of information of each transducer transmission.Obtain and send by MIB 7 from SNMP agency 5 information that send to snmp management device 4.Although all omitted the figure of MIB in Fig. 5 and Figure 16, each equipment managed 201 as shown in Fig. 5 and Figure 16 all comprises MIB.

Suppose that the equipment of being managed 201 comprises in the family the air conditioner.In addition, suppose that a described N transducer is a temperature sensor, and be separately positioned in each room in the family.

Each transducer sends to sensor communication unit 2020 with data (below, be called " sensing data "), and these data are to have distributed the measurement temperature value of identifier etc.

Figure 21 is the figure of example that the structure of the sensing data that sends from transducer is shown.As shown in figure 21, sensing data 20 comprises sensor ID 20a, date and time 20b and measurement data 20c.

Sensor ID 20a is used for the identifier of specified sensor.Date and time 20b is the timestamp of sensing data 20.Date and time when this timestamp is represented to measure temperature.Measurement data 20c is the data that temperature value is measured in expression.

Sensor communication unit 2020 obtains sensing data at each predetermined period from each transducer.Sensor communication unit 2020 makes SNMP agency 5 that the sensing data 20 that obtains is saved among the MIB 7.Therefore, in predetermined period, update stored in sensing data 20 among the MIB 7.

According to the request of snmp management device 4, send to snmp management device 4 with being included in temperature value in the sensing data 20 that is stored among the MIB 7 (below, be called " MIB value ").

Figure 22 is the precedence diagram that the operation that each equipment is carried out when SNMP agency 5 sends to snmp management device 4 with first sensor 21 temperature value measured is shown.To use Figure 22 to describe the operation that each equipment is carried out.Here, in MIB 7, because above-mentioned renewal, the MIB value of first sensor 21 exists.

In the communication between SNMP agency 5 and snmp management device 4, as mentioned above, protocol conversion is carried out by family's PERCOM peripheral communication client computer 2023, protocol conversion client computer 2022 and communication repeating server 102.Yet, omitted the accompanying drawing and the description of protocol conversion here.

SNMP request is that 101 snmp management device 4 sends the details (S500) of these SNMP request expression request first sensor 21 temperature value measured from the office terminal.

The SNMP agency 5 of the equipment of being managed 201 receives the SNMP request, and reads the MIB value (S501) of first sensor 21.SNMP agency 5 SNMP responses that will comprise the MIB value send to snmp management device 4 (S502).

SNMP agency 5 judges based on the timestamp and the predetermined threshold of the MIB value of transmission whether the MIB value is old (S503).The timestamp of MIB value is included in the date and time 20b (with reference to Figure 21) in the sensing data 20.Predetermined threshold for example is ten minutes.Date and time and the difference of current time in the timestamp indication surpass under ten minutes the situation, judge that the MIB value is old.Be ten minutes or be less than under ten minutes the situation that in the date and time of timestamp indication and the difference of current time judgement MIB value is new.

Judging that the MIB value that sends is under the news, SNMP agency 5 finishes to relate to the operation that sends temperature value.

In the MIB value that judge to send is that SNMP agency 5 asks sensor communication unit 2020 to obtain temperature value (S505) from first sensor 21 under the old situation (S504).Be called " sensor values " below the temperature value that obtains from first sensor 21 according to request.

After receiving request from SNMP agency 5, the sensor values (S506) that obtains from first sensor 21 is attempted reading in sensor communication unit 2020.

Particularly, in order to find first sensor 21, poll is carried out to the transducer that each is connected to network 12 in sensor communication unit 2020.After successfully finding first sensor 21 by poll, sensor communication unit 2020 makes first sensor 21 send the sensing data 20 (S507) that comprises sensor values.

Poll is carried out five times at most up to finding first sensor 21.Can not find behind five polls under the situation of first sensor 21 that sensor communication unit 2020 is not found to SNMP agency 5 notices.After receiving this notice, SNMP agency 5 finishes to relate to the operation that sends temperature value.

After receiving sensing data 20, sensor communication unit 2020 sends to SNMP agency 5 (S508) with sensing data 20.

After receiving sensing data 20, SNMP agency 5 upgrades the sensing data 20 that is present in the first sensor 21 among the MIB 7.In addition, SNMP agency 5 extracts sensor values from sensing data 20, and by snmp trap (trap) sensor values is notified to snmp management device 4 (S509).

The snmp trap meaning is the SNMP message that uses when the SNMP agency spontaneously send information to the snmp management device.

If from for the first time receiving the time of temperature value (S502) beginning till snmp trap notice temperature value (S509) from the equipment of being managed 201 is at the fixed time in the section, the temperature value of snmp management device 4 approval snmp traps notices is correct values.

As mentioned above, under the situation of the temperature value of asking sensor measurements from snmp management device 4, SNMP acts on behalf of 5 from MIB 7 read sensor temperature value measured (MIB value), and the MIB value is sent to snmp management device 4.Like this, SNMP agency 5 request of snmp management device 4 that can make an immediate response.

Send after the MIB value, SNMP agency 5 judges whether the MIB value that sends is old.Judging that MIB value is under the old situation, SNMP acts on behalf of 5 and obtains the sensor values of first sensor 21 by sensor communication unit 2020.SNMP agency 5 is notified to snmp management device 4 by snmp trap with sensor values.

Thereby SNMP agency 5 can be notified to more accurate temperature value snmp management device 4.

As mentioned above, can be used to a kind of system according to communications network system of the present invention and communicator, this system 101 obtains information measured by a plurality of transducers that are connected to the equipment 201 that a quilt manages and that detect from the office terminal.

The operation that each equipment is carried out is that N transducer of hypothesis is that equipment that temperature sensor and quilt are managed is included in the air conditioner and describes.Yet transducer can not be a temperature sensor, for example, can be other transducers, for example the human body sensor of human body motion.In addition, the equipment of being managed 201 can not be included in the air conditioner, but can for example be included in the family expenses controller of the equipment of the network enabled in the managing family.In addition, the equipment of being managed 201 can be used as independent unit.

The equipment 201 that the quilt that links to each other with transducer is managed can not comprise the function of communication repeating client computer 202.In this case above-mentioned, the equipment of being managed 201 can be connected to communication repeating client computer 202, and the equipment of being managed 201 can be communicated by letter with office terminal 101 by communication repeating client computer 202.

In addition, sensor communication unit 2020 obtains each cycle of sensing data 20 from each transducer can be by being decided by the user of the equipment 201 managed, and can be provided with by sensor communication unit 2020.Thereby, for example can come the change cycle according to the state of the temperature change in the room that each transducer is set.In addition, the cycle can be acted on behalf of 5 by SNMP and is provided with.In this case above-mentioned, SNMP agency 5 can obtain sensing data by indication sensor communication unit 2020.

When sensor arrived variations in temperature, transducer can be notified to sensor communication unit 2020 with temperature value at this moment by snmp trap.Thereby the information that is stored in MIB 7 always can remain the information after the renewal.

In addition, sensor communication unit 2020 is used to find that the maximum times of the poll of specified sensor can be less than or more than five times.The time period that can limit the poll execution replaces limiting wrap count.For example, in three seconds, repeat poll and can not find to finish poll under the situation of specified sensor.Thereby, for example can decide the number of times or the time period of poll according to the importance of the temperature value of sensor measurement.

In addition, in the above-described embodiments, each transducer communicates by network 12 and sensor communication unit 2020.Yet each transducer can wirelessly communicate with sensor communication unit 2020.

Figure 23 illustrates N transducer directly and the schematic diagram of the mode that wirelessly communicates of sensor communication unit 2020.As shown in figure 23 since transducer directly and sensor communication unit 2020 wirelessly communicate, so transducer can be attached on the mobile object human or animal for example.In other words, can be from the office terminal 101 obtain the information that relates to mobile object.

For example, be attached to the person, can be from the office terminal 101 learn how many steps the people has walked by the step transducer that will be used to detect step.

In addition, each transducer can communicate by ad-hoc network and sensor communication unit 2020, and wherein the ad-hoc network is the network that communicates with each transducer.

Figure 24 is the schematic diagram that the ad-hoc network of being made up of a plurality of transducers is shown.This ad-hoc network is made up of seven transducers of first sensor 21 to the 7th transducers 27.The transducer of keeping off with sensor communication unit 2020 can use multi-hop communication and sensor communication unit 2020 exchange messages.

For example, the 6th transducer 26 is away from sensor communication unit 2020, and can not directly communicate by letter with sensor communication unit 2020.Yet the 6th transducer 26 can be by second transducer 22 and first sensor 21 and sensor communication unit 2020 exchange messages.

Thereby each transducer can suppress the electric wave output of radio communication.Like this, for example, can improve the duration that is included in the battery in the transducer as power supply.In addition, transducer can be arranged on the place of strict restriction electric wave, for example hospital.

Under the situation of transducer and sensor communication unit 2020 mutual radio communications, transducer can comprise the positional information of transducer in sensing data 20.

Figure 25 is the figure that the example of sensing data 20 structures that comprise positional information is shown.Positional information 20d is the information of expression sensing station when transducer sends sensing data 20.

Whether for example, rely on transducer can communicate by letter with other fixed sensing, transducer can be pointed out its position roughly.In ad-hoc network as shown in figure 24, suppose that the first sensor 21 and second transducer 22 are fixed on position separately.In this case above-mentioned, because 26 of the 6th transducers communicate by letters with second transducer 22, keep off with first sensor 21 so can assert the 6th transducer 26, still approaching with second transducer 22.

Like this, when the 6th transducer 26 was held the information in the place of being fixed about second transducer 22, the 6th transducer 26 can be pointed out its position roughly.In addition, the 6th transducer 26 can send to sensor communication unit 2020 as the positional information 20d that is included in the sensing data with the information of its position of expression.

Therefore, for example, can be from the office terminal whereabouts of the 101 current walkings of people of learning the step transducer attached.

Transducer specifies the method for its position to be not limited to the method that possibility that above-mentioned dependence communicates by letter with fixation of sensor is specified own position.For example, the position that position-measurement device can specified sensor, this position-measurement device can be visually and the data of measuring transducer acoustically.And transducer can obtain information about its position from position-measurement device.

In addition, the employed communication protocol of communication can not be SNMP between sensor communication unit 2020 and each transducer.For example, can use ZigBee.

In addition, actuator can be connected to the equipment of being managed 201 and replace transducer.And, can by by the equipment 201 managed from the office terminal 101 these actuators of control.

Figure 26 is the functional block diagram of example that the functional configuration of the equipment 201 that comprises communication repeating client computer 202 functions and manage with the quilt of actuator communication function is shown.

As shown in figure 26, the equipment of being managed 201 comprises actuator communication unit 2030.The remainder of structure is identical with the equipment 201 that the quilt shown in Figure 20 is managed.

Actuator communication unit 2030 is to be used for the processing unit of communicating by letter with actuator.Actuator communication unit 2030 is communicated by letter with N actuator, wherein N actuator be first actuator 31, second actuator 32 ... with N actuator 39, they are connected respectively to network 12.Communication protocol for example is SNMP.

Suppose that the equipment of being managed is included in the family expenses controller of equipment of the network enabled in the managing family.In addition, suppose that N actuator is respectively air conditioner, the electronic lock that is used to lock a door etc.

Each actuator has the state value of representing its state.For example, air conditioner has the temperature value of current preset as state value.

Actuator communication unit 2030 obtains state value at each predetermined period from each actuator.Actuator communication unit 2030 makes SNMP agency 5 that the state value that obtains is stored among the MIB 7.Therefore, the state value (hereinafter referred to as " MIB " value) that is stored among the MIB 7 is upgraded in predetermined period.

Here, state value is to send from the data mode of each actuator with the identifier that comprises the transmission source etc. and sensing data 20 as shown in figure 25.

Each actuator is operated according to the request that 101 the snmp management device 4 from the office terminal sends.In addition, each actuator is notified to the equipment of being managed 201 with state value after operation.

Figure 27 is the precedence diagram that the operation that each equipment is carried out when snmp management device 4 requests first actuator 31 changes preset temperature is shown.

To use Figure 27 to describe the operating process that each equipment is carried out.

Here, suppose following situation: first actuator 31 is air conditioners, and snmp management device 4 requests first actuator 31 of office terminal 101 changes preset temperature into " 25 ℃ ".

SNMP request is that 101 snmp management device 4 sends from the office terminal, and this SNMP request expression changes the preset temperature of first actuator 31 into the request (S600) of " 25 ℃ ".Particularly, the SNMP request comprises the request details that the expression request is updated to the MIB value of first actuator 31 " 25 ℃ ".

The SNMP agency 5 of the equipment of being managed receives this SNMP request, and the MIB value is updated to " 25 ℃ " (S601).

After the renewal, the MIB value " 25 ℃ " that SNMP agency 5 requests first actuator 31 changes preset temperature into renewal (S602).

Receive after the above-mentioned request, 31 operations of first actuator are to change preset temperature into " 25 ℃ ".After the operation, first actuator 31 sends to SNMP agency 5 (S603) with state value (hereinafter referred to as " actuator value ") at this moment.

SNMP agency 5 compares the MIB value that sends with the actuator value that receives.For example, be under the situation of " 28 ℃ " in the actuator value, it does not meet MIB value " 25 ℃ " (S604).In other words, this means that first actuator 31 is not according to solicit operation.Therefore, SNMP agency 5 requests first actuator 31 changes preset temperature into " 25 ℃ " (S605) once more.

Receive after second request, 31 operations of first actuator are to change preset temperature into " 25 ℃ ".After the operation, first actuator 31 sends to SNMP agency 5 (S606) with the actuator value.

SNMP agency 5 compares the MIB value that sends with the actuator value that receives.For example, be under the situation of " 25 ℃ " in the actuator value, it meets MIB value (S607).In other words, this means that first actuator 31 is according to solicit operation.SNMP agency 5 is notified to snmp management device 4 (S608) by snmp trap with the MIB value.

Repeatedly produce from the request of SNMP agency 5 to first actuators 31, maximum five times, act on behalf of the actuator value that the 5 MIB values that send meet reception up to SNMP.

Result as the 5th request does not meet in the MIB value under the situation of actuator value, and the SNMP agency 5 MIB values with first actuator 31 are rewritten as the actuator value.SNMP agency 5 is notified to snmp management device 4 by snmp trap with the actuator value again.

As mentioned above, can be used to a kind of system according to communicator of the present invention and communication network, this system is a plurality of actuators that are connected to the equipment 201 that a quilt manages of 101 controls from the office terminal.According to this system, for example, a plurality of household electrical appliance that can link to each other with a family expenses controller from family's external control.

Here, air conditioner is the example of actuator, and actuator can be other equipment or be included in mechanical part in this equipment.

In addition, actuator communication unit 2030 obtains each cycle of state value from each actuator can be by being decided by the user of the equipment 201 managed, and be arranged in the actuator communication unit 2030.Thereby for example, under the situation of a plurality of actuators that the state frequent variations is arranged, the user can be provided with the short cycle.In addition, the cycle can be set among the SNMP agency 5.In this case above-mentioned, SNMP agency 5 can indicate actuator communication unit 2030 to obtain state value.

Detect at actuator under its situation of state variation, actuator can be notified to actuator communication unit 2030 with state value by snmp trap.Thereby the information after the renewal always is present among the MIB 7.

Send from the request of SNMP agency 5 to first actuators 31 and can be less than five times or more than five times.In addition, can send, replace request to send number of times by the time period limit request that sends request.Therefore, for example, number of times or the time period that can decide request to send according to the importance of operations actuator.

Each actuator can wirelessly communicate with actuator communication unit 2030.

Figure 28 is the schematic diagram that the mode that N (N is a positive integer) individual actuator and actuator communication unit 2030 wirelessly communicate is shown.As shown in figure 28, wirelessly communicate by direct and actuator communication unit 2030, it is removable that actuator becomes.In other words, can be from the office terminal the mobile actuator of 101 controls.

In addition, each actuator can communicate by ad-hoc network and actuator communication unit 2030, and wherein the ad-hoc network is the network that each actuator is communicated by letter with it.

Figure 29 is the schematic diagram that the ad-hoc network of being made up of a plurality of actuators is shown.This ad-hoc network is made up of seven actuators of first actuator, 31 to the 7th actuators 37.Second actuator, 32 grades can be by multi-hop communication and actuator communication unit 2030 exchange messages, these second actuator, 32 grades can not be directly and actuator communication unit 2030 communicate.

In this case above-mentioned, and under the situation of as shown in figure 24 the ad-hoc network of being made up of a plurality of actuators, each actuator can suppress the electric wave output of radio communication.In addition, as above-mentioned transducer, the information about its position can be specified or obtain to each actuator, and this information can be sent to actuator communication unit 2030.

And the communication protocol of using between actuator communication unit 2030 and each actuator can not be SNMP.For example, can use ZigBee.

Although only describe exemplary embodiment of the present invention above in detail, those of ordinary skill in the art will readily appreciate that, do not leave in itself under the situation of novel teachings of the present invention and advantage, in the exemplary embodiment a lot of modifications can be arranged.Therefore, all such modifications are all attempted within the scope of the present invention involved.

Industrial applicibility

Comprise according to communications network system of the present invention and communicator: the client of global network end Machine; Server with local network-side. And, communication network to the remote maintenance of household electrical appliance, Long-distance Control etc. are useful. In addition, communications network system and communicator can also be applied to Browse and operate from the family outside to the content that is stored in the household electrical appliance.

Claims

1, a kind of communications network system comprises first system and second system that connect by global network,

Wherein said first system comprises:

Terminal installation is used for and devices communicating; And

The first communication repeating device, it links to each other with described terminal installation, is used for carrying out relaying by the communication of described global network between described terminal installation and described second system,

Described second system comprises:

Router apparatus is used for described global network is connected with localized network;

Described equipment, it links to each other with described localized network, and communicates by letter with described terminal installation; And

The second communication relay is used for carrying out relaying by communicating by letter of described router apparatus and described global network between described equipment and described first system, and described second communication relay links to each other with described localized network,

The described first communication repeating device has:

First communication unit is used to use first agreement to communicate by letter with described terminal installation;

The second communication unit is used to use second agreement by described global network and described second system communication; And

First converting unit; Be used for that grouped data is converted to the second protocol grouped data and be used as changing grouping; And changed grouping and sent to described second communication unit described; Wherein said grouped data is obtained from described terminal installation by described first communication unit; And be used for grouped data is converted to first protocol packet data; And described first protocol packet data sent to described first communication unit; Wherein said grouped data is obtained from described second system by described second communication unit

Described second communication relay has:

Third communication unit is used to use described first agreement by described localized network and described devices communicating;

Four-way letter unit is used to use described second agreement and described first system communication; And

Second converting unit, be used for grouped data is converted to second protocol packet data, and described second protocol packet data sent to described four-way letter unit, wherein said grouped data is obtained from described equipment by described third communication unit, and to be used for the described packet switched of having changed be first protocol packet data, and described first protocol packet data sent to described third communication unit, the wherein said conversion divides into groups to be obtained from described first system by described four-way letter unit, and

Described second communication relay is used for predetermined packet of packets is sent to described first system by described router apparatus, and

Described first system is used for the described transmission source address that divides into groups to send to described predetermined packet of packets of having changed.

2, communications network system according to claim 1 also comprises

Trigger server, be used for the triggering grouping is sent to described second communication relay, described triggering grouping makes described second communication relay operate to the client computer of using described second agreement,

Wherein said first system is used for sending the described grouping of having changed based on the request from the described second communication relay that divides into groups in response to described triggering.

3, communications network system according to claim 1,

Wherein said second communication relay also has the device id acquiring unit, it is used for obtaining the device id that is used for identifying described equipment from described equipment, and the device id that is obtained stored with the address of equipment described in the described localized network, so that described device id and described address are interrelated, and

Receive described changed grouping after, described second communication relay is used for described related based in being included in the described described device id of having changed grouping and being stored in described device id acquiring unit, with the conversion packet switched of described reception is first protocol packet data, and described first protocol packet data is sent to described equipment as the request grouping.

4, communications network system according to claim 1,

Wherein after described first agreement of use received described grouped data, described equipment was used to use described first agreement that respond packet is sent to described second communication relay, and described respond packet is represented described response,

After receiving described respond packet, described second communication relay is used to use described second agreement that the respond packet of described reception is sent to the described first communication repeating device, and

After receiving described respond packet, the described first communication repeating device is used for the respond packet of described reception is converted to first protocol packet data, and described first protocol packet data is sent to described terminal installation.

5, communications network system according to claim 2,

The wherein said first communication repeating device is used for the trigger request grouping is sent to described triggering server, the timing that described trigger request grouping provides described triggering grouping to be sent out, and

After receiving described trigger request grouping, described triggering server is used to send described triggering grouping.

6, communications network system according to claim 5,

The request grouping that wherein said terminal installation is used to use described first agreement will comprise for the request details of described equipment sends to the described first communication repeating device, and

After receiving the described request grouping, the described first communication repeating device is used for described trigger request grouping is sent to described triggering server.

7, communications network system according to claim 2,

Wherein said second communication relay is used for poll groupings is sent to described triggering server, and receive as the described triggering grouping to the response of described poll groupings from described triggering server, wherein said poll groupings makes the existence of the transmission destination that described triggering server can cognitive described triggering grouping.

8, communications network system according to claim 7,

Wherein said poll groupings comprises the device id that is used to identify described equipment, and

After receiving described poll groupings, described triggering server is used for storage package and is contained in the device id of described poll groupings and the transmission source address of described poll groupings, so that described device id and described address are interrelated, and be used for discerning the described localized network that links to each other with equipment with described device id based on described device id.

9, communications network system according to claim 7,

Wherein said router apparatus is used for the described poll groupings from described second communication relay is relayed to described triggering server, to store together so that described address is interrelated in the address of second communication relay described in the described localized network with in the address of triggering server described in the described global network, and be according to described association described grouping to be sent to the described first communication repeating device under the situation about receiving from described global network in grouping.

10, communications network system according to claim 7,

Wherein said second communication relay is used to use User Datagram Protoco (UDP) (UDP) to send described poll groupings.

11, communications network system according to claim 2,

Wherein after receiving described triggering grouping, described second communication relay is used for sending to the described first communication repeating device with obtaining the request grouping, and described obtaining asks grouping expression expectation to obtain the described request of having changed grouping,

Receive described obtain request grouping after, the described first communication repeating device is used for having changed grouping and sending to described second communication relay described, and

Receive described changed grouping after, the conversion packet switched that described second communication relay is used for described reception is first protocol packet data, and described first protocol packet data is sent to described equipment as request grouping.

12, communications network system according to claim 11,

Wherein after receiving described triggering grouping, described second communication relay is used for repeatedly one or more requests of obtaining being divided into groups to send to described second communication relay, up to receiving notice, wherein each obtains request grouping expression expectation and obtains the described request of having changed grouping, described notice represents not have to send to the information of described second communication relay, and

Receive described obtain request grouping after, (i) under the situation that the information that can send to described second communication relay is arranged, the described first communication repeating device is used for described conversion that comprises described information divided into groups to send to described second communication relay, wherein said information is to obtain from the grouped data that is received from described terminal installation, and (ii) under the situation of the information that does not have to send to described second communication relay, the described first communication repeating device is used for not having information to send to described second communication relay notice.

13, communications network system according to claim 12,

Wherein receive described obtain request grouping after, under the situation that does not have information to send, the described first communication repeating device is used for the wait request is sent to described second communication relay, described wait request is to be illustrated in predetermined amount of time to send the described information requested of obtaining the request grouping in the back in the past, and

Receive under the situation of described wait request at described second communication relay, described second communication relay is used for asking grouping to send to the described first communication repeating device described obtaining at described predetermined amount of time in the past.

14, communications network system according to claim 13,

Wherein, receiving according to described wait request after the described request of obtaining that described predetermined amount of time sends is in the past divided into groups, under the situation that does not have information to send, the described first communication repeating device is used to send described wait request, and

After the transmission number of times of described wait request has reached pre-determined number, receive according to described wait request in the request of obtaining grouping that described predetermined amount of time sends in the past and do not have under the situation that information can send at the described first communication repeating device, the described first communication repeating device is notified to described second communication relay does not have information to send.

15, communications network system according to claim 2,

Wherein said triggering server is used to use UDP to send described triggering grouping.

16, communications network system according to claim 1,

Wherein said first agreement is Simple Network Management Protocol (SNMP).

17, communications network system according to claim 16,

Wherein said terminal installation is used for the request grouping is sent to the described first communication repeating device with the form that SNMP divides into groups, and the described request grouping comprises the request details for described equipment,

When sending the described request grouping of dividing into groups as SNMP, described terminal installation is used in the predetermined field of SNMP message that storage is comprised to described request grouping, described data are combinations that original word segment data and being used to identifies the device id of described equipment, and

After receiving the described request grouping, the described first communication repeating device is used for separating the predetermined field of SNMP field that described device id is comprised from described request grouping, thereby only make described original field be stored in the described predetermined field, and to make the length separately of described predetermined field and described SNMP message be the reserved word segment length.

18, communications network system according to claim 16,

Wherein said first converting unit is used for obtaining the SNMP message that is included in described grouped data, with storage in the predetermined field of described SNMP message, and described SNMP message sent to described terminal installation with the form of SNMP grouping, wherein said grouped data is obtained from described second system by described second communication unit, and described data are combinations that described original word segment data and being used to identifies the device id of described equipment.

19, communications network system according to claim 1,

Wherein said second agreement is HTTP(Hypertext Transport Protocol) or Secure Hypertext Transfer Protocol (HTTPS).

20, communications network system according to claim 1,

Wherein said equipment comprises described second communication relay.

21, communications network system according to claim 1,

Wherein said second system also comprises the transducer that links to each other with described equipment,

Described equipment is used to obtain the sensor information by described sensor measurement or detection, and uses described first agreement that the described sensor information of obtaining is sent to described second communication relay,

After receiving described sensor information, described second communication relay is used to use described second agreement that the sensor information of described reception is sent to the described first communication repeating device, and

After receiving described sensor information, the described first communication repeating device is used for the sensor information of described reception is converted to first protocol packet data, and described first protocol packet data is sent to described terminal installation.

22, communications network system according to claim 20,

Wherein said equipment comprises:

The sensor information acquiring unit is used for obtaining described sensor information from described transducer;

Memory cell is used to store described sensor information;

The sensor information transmitting element, the sensor information that is used for using described first agreement will be stored in described memory cell sends to described second communication relay; And

Judging unit, be used for after described sensor information transmitting element transmission is stored in the sensor information of described memory cell, whether time and difference current time between of judgement at described sensor measurement or when detecting described heat transfer agent has surpassed predetermined threshold

Described sensor information acquiring unit is used for judging at described judging unit that described difference has surpassed under the situation of described predetermined threshold and obtains sensor information from described transducer once more, and

Described sensor information transmitting element is used for the sensor information that described sensor information acquiring unit obtains is once more sent to described second communication relay.

23, communications network system according to claim 1,

Wherein said second system also comprises the actuator that links to each other with described equipment,

The described conversion divides into groups to comprise the information that is used to control described actuator,

Receive described changed grouping after, the conversion packet switched that described second communication relay is used for described reception is first protocol packet data, and described first protocol packet data is sent to described equipment as request grouping, and

The information that described equipment is used for being used to control described actuator sends to described actuator, and described information is included in the described request grouping.

24, a kind of communication means that is used for communication network terminal installation that links to each other with first system and the equipment that links to each other with second system,

Wherein said system has first system and second system that connects by global network, and

Described first system comprises

The first communication repeating device is used for carrying out relaying by the communication of described global network between described terminal installation and described second system, and the described first communication repeating device links to each other with described terminal installation,

Described second system comprises:

Router apparatus is used to connect described global network and localized network; And

Described communication means comprises step:

Described second communication relay is used for by described router apparatus predetermined packet of packets being sent to described first system;

The described first communication repeating device is used for becoming second protocol packet to be used as changing grouping packet switched, and with the described transmission source address that divides into groups to send to described predetermined packet of packets of having changed, wherein said grouping is to use first agreement to obtain from described terminal installation, and described predetermined packet of packets sends from described second communication relay; And

Described second communication relay is used to receive from what the described first communication repeating device sent has describedly changed grouping, is first protocol packet data with the conversion packet switched of described reception, and the grouped data of described conversion is sent to described equipment.

25, the first communication repeating device, it carries out relaying to the communication by global network between the terminal installation and second system, and the described first communication repeating device comprises:

First converting unit, be used for that grouped data is converted to second protocol packet data and be used as changing grouping, and changed grouping and sent to described second communication unit described, wherein said grouped data is obtained from described terminal installation by described first communication unit, and be used for grouped data is converted to first protocol packet data, and described first protocol packet data sent to described first communication unit, wherein said grouped data is obtained from described second system by described second communication unit.

26, the first communication repeating device according to claim 22,

Wherein receive with described grouped data at described first communication unit described first communication unit after described terminal installation receives grouped data and have under the situation of grouped data of same detail, described first communication unit is used to abandon the grouped data that received afterwards.

27, a kind of being used for carry out the program of relaying between the terminal installation and second system by the communication of global network, described program is carried out computer:

Receive first protocol packet data from described terminal installation;

To be converted to second protocol packet data from described first protocol packet data that described terminal installation receives;

By described global network described second protocol packet data is sent to described second system;

Receive second protocol packet data from described second system;

To be converted to first protocol packet data from described second protocol packet data that described second system receives; And

First protocol packet data of described conversion is sent to described terminal installation.

28, second communication relay, it links to each other with localized network, and to carrying out relaying by communicating by letter of router apparatus and global network between the equipment and first system, described the two or two communication repeating device comprises:

Third communication unit is used to use first agreement by described localized network and described devices communicating;

Four-way letter unit is used to use second agreement and described first system communication; And

Second converting unit; Be used for grouped data is converted to the second protocol grouped data; And described second protocol grouped data sent to described four-way letter unit; Wherein said grouped data is obtained from described equipment by described third communication unit; And being used for changing packet switched is first protocol packet data; And described first protocol packet data sent to described third communication unit; Wherein saidly changed that grouping is converted into the second protocol grouped data and be to be obtained from described the first system by described four-way letter unit

Described four-way letter unit is used for by described router apparatus predetermined packet of packets being sent to described first system, and receives transmission source address described that sends to described predetermined packet of packets from described first system and changed grouping.

29, a kind of being used for carrying out the program of relaying by communicating by letter of router apparatus and global network between the equipment and first system, described program comprises:

By described router apparatus predetermined packet of packets is notified to described first system;

Reception sends to second protocol packet data of the transmission source address of described predetermined packet of packets from described first system;

To be converted to first protocol packet data from described second protocol packet data that described first system receives;

Described first protocol packet data is sent to described equipment by localized network;

Receive first protocol packet data by described localized network from described equipment;

Described first protocol packet data is converted to second protocol packet data, and described first protocol packet data receives from described equipment; And

Described second protocol packet data is sent to described first system.