CN1855891A - Communication system, network router and network connection method - Google Patents

Abstract

A connection adapter is interposed between high-level equipment and a communication module. The connection adapter and a router perform a circuit control and an address conversion processing so that the high-level equipment and a management computer set for the network connection service giving a fixed IP address can use the network connection service giving a dynamic IP address.

Description

Communication system, network router, method for connecting network

Technical field

The present invention relates to collect automatic vending machine telemetries such as sales information the field and to the field of teleprocessing (telematics) such as mobile object dispensing transport information.

Background technology

In recent years, collect with the telemetry and the teleprocessing of operation such as distribution information by the wireless packet communications net and day by day popularize.So-called telemetry is to use communication line to read the general name of structure of the variable of meter originally.But, in recent years, be not only common data read, also be to use in the action supervision of machine or the term of Long-distance Control.As the representative example of telemetry, can enumerate the use amount management system of sale management system, combustion gas and the running water etc. of automatic vending machine, the management system in unmanned parking lot or the like.For an example of the sale management system of automatic vending machine, can be with reference to patent disclosure 2003-51056 communique.In addition, thus so-called teleprocessing mean with communication system combination and provide information service in real time to mobile objects such as automobiles.As telematic representative example, can list and be arranged on inter-vehicle information system that transport information or navigation information are provided in real time to terminal in the automobile or the like.

In this field, at remote scene, the epigyny device that is used to be connected to the communication equipment of wireless packet communications net and use this communication equipment is necessary.Above-mentioned epigyny device is equivalent to data terminal unit (DTE:Data Terminal Equipment).In addition, above-mentioned communication equipment is equivalent to data communication equipment (DCE:Data Circuit-terminating Equipment).For example, in the sale management system of automatic vending machine, the control device that carries out the control of sales control or storehouse temperature is equivalent to epigyny device.

The connection LAN that above-mentioned wireless packet communications net use telecommunications company (carrier) (communication enterprise) provides and the network connection service of wireless communication terminal make up.In this network connection service, be provided with network router among the user's of this service the LAN, become possibility thereby wireless communication terminal is connected to LAN by wireless packet communications net by this service construction.Point-to-point protocol) wireless communication terminal uses common PPP, and (Point-to-Point Protocol: agreement such as only is connected to LAN by the wireless packet communications net when being necessary.Here, the address space of wireless packet communications net is predetermined in advance by telecommunications company, and the IP address of the wireless packet communications net side (WAN side) of network router has been assigned with the fixed ip address that is included in the above-mentioned address space.In addition, the IP address of wireless communication terminal has been assigned with the fixed ip address that is included in the above-mentioned address space, and an IP address that is included in the above-mentioned address space perhaps dynamically is provided when being connected to the wireless packet communications net.

But because the wireless packet communications net is according to the difference of telecommunications company, standard and service pattern also are various, thus communication equipment according to the difference of telecommunications company, standard and operation also are various.For example, according to the network connection service that telecommunications company provides, distribution method, method of attachment, authentication method that offers the IP address of connecting terminal etc. all is various.Therefore, the position should be designed during device so in design: employed telecommunications company of chosen in advance and communication equipment, and carry out and the corresponding operation of this communication equipment.

In recent years, after making up such system, the hope that telecommunications company occurred wanting to change.Its reason for example is " in the place that is provided with of epigyny device, this telecommunications company's electric wave state labile or improper ".Especially, wish from distributing the network connection service of fixed ip address to be altered to the network connection service that the IP address dynamically is provided to connecting terminal.

But, in the network connection service that the IP address dynamically is provided, because the IP address of connecting terminal do not fix, can not begin the problem that communicates with connecting terminal from LAN side device so run into.In addition, if change telecommunications company or service, then associated communication equipment also will change, even therefore epigyny device also needs to change and transformation etc.Based on the character of this system, the epigyny device decentralized configuration is at remote scene, thereby under a large amount of situations about being provided with on the market, the workload relevant with transforming epigyny device with change becomes very huge at epigyny device.In addition, be not limited to only change telecommunications company etc.,, follow the type change of communication equipment also same problem can take place even can think same telecommunications company.Like this, this problem also can take place in the future telecommunications company's change or type change.Therefore, be necessary to carry out during system constructing prudent services selection, telecommunications company is selected and type is selected.In addition, when making up the system that uses a plurality of telecommunications companies, service and communication equipment, be necessary to prepare and each telecommunications company and the corresponding epigyny device of communication equipment.Therefore, there is the problem that expends cost in the constructing system.

Summary of the invention

The object of the present invention is to provide a kind of communication system that can use various network connection service.

To achieve these goals, the application has proposed following communication system.This communication system is used by the wireless packet communications net and is connected LAN and wireless communication terminal and the network connection service of the IP address in first address space dynamically is provided to wireless communication terminal.On the boundary point between wireless packet communications net and the LAN, disposed network router.Above-mentioned wireless communication terminal comprises the communication equipment that is connected to the wireless packet communications net, use epigyny device that this communication equipment communicates, between communication equipment and epigyny device so that carry out the jockey of trunking traffic.In the above-mentioned epigyny device, the IP address of allocating the network connection service that the IP address in second address space is provided regularly in advance is as its own IP address, and the IP address in the three-address space is set to regularly the IP address of LAN lateral terminal.Above-mentioned jockey comprises communication control unit, to be stored in first address space in the transmitting-receiving IP packet header the IP address and second or the three-address space in the IP address between carry out mutual conversion.

According to the present invention, with second and the three-address space in the system that makes up of IP address in, need not increase transformation and change, just can use as wireless packet communications Netcom and cross the network connection service that use the IP address in first address space wireless communication terminal or LAN etc.Therefore, can carry out system design flexibly.

In addition, above-mentioned epigyny device is equivalent to data terminal unit (DTE:Data TerminalEquipment).In addition, above-mentioned communication equipment is equivalent to data communication equipment (DCE:Data Circuit-terminating Equipment).In addition, " the IP address dynamically is provided " means that when wireless communication terminal was connected to the wireless packet communications net, communication network was given IP the address to wireless communication terminal.At this, the IP address give existing situation of not giving one of IP address of comprising in the preset range regularly, the situation of having given regularly with the corresponding IP of wireless communication terminal address is also arranged.Any situation occurs and depend on the form of serving in the wireless packet communications net.

The network router that uses in communication system of the present invention has been proposed below.Is the communication of destination when beginning to ask when having what send from the LAN lateral terminal to allocate fixed terminal IP address to wireless communication terminal in advance, and the connection control device of this network router just is connected to the notice of network router to this wireless communication terminal transmission.This notice is by using the messenger service that network connection service provided to send.In addition, in this notice, comprise and be used to discern the wireless communication terminal that the connected management information relevant with which communication.

Wireless communication terminal uses network connection service to be connected to network router after receiving this notice, and above-mentioned management information is sent to network router.At this, be connected to moment of wireless packet communications net at wireless communication terminal, provide dynamic IP address of terminal to this wireless communication terminal.This dynamic IP address of terminal is by being obtained by the connection control device of network router with reference to the transmission source IP address of the IP grouping of preserving management information.

The management information of storing management information that the connection control device of network router receives from wireless communication terminal by contrast and the storage device can specify management information from which wireless communication terminal to receive.

Below, that the connection control device of network router is controlled at is relevant with above-mentioned communication ' mutual conversion between the LAN lateral terminal IP address of storing in the header of grouping and the IP address of the wireless packet communications net side of network router, meanwhile, mutual conversion is carried out in fixed terminal IP address and dynamic terminal IP address.Thus, owing between LAN lateral terminal and wireless communication terminal, set up being connected of IP layer, so (TCP or UDP etc.) communicate and become possibility on the layer higher than IP layer.

In addition, providing to wireless communication terminal in the network connection service of dynamic IP addressing, under wireless communication terminal and situation that the LAN side begins to communicate by letter, is communication from which wireless communication terminal even can not specify in the LAN lateral terminal.

Therefore, in network router of the present invention, when existing the communication of using network connection service to begin to ask from wireless communication terminal, connect control device and just from above-mentioned storage device, obtain the fixed terminal IP address of the corresponding wireless communication terminal of telephone number that comprises in beginning to ask of communicating by letter with this, and from this communication begins to ask, obtain the dynamic terminal IP address that dynamically offers wireless communication terminal, and in storage device, store the LAN lateral terminal IP address and the dynamic terminal IP address of the destination that becomes this fixed terminal IP address and this communication.Like this, the IP address of the wireless packet communications net side of that above-mentioned address conversion device is stored in the header of the IP relevant with above-mentioned communication grouping based on the mutual conversion of each address information of storing in the above-mentioned storage device, LAN lateral terminal IP address and network router, meanwhile, can also mutual conversion fixed terminal IP address and dynamic terminal IP address.

By such processing, the transmission source IP address of the grouping that receives owing to the LAN lateral terminal is not that dynamic terminal address has become fixed terminal IP address, so, in the LAN lateral terminal, can specify the wireless communication terminal that becomes communication object.In addition, in network router, this fixed terminal IP address mapping is and the corresponding address of the telephone number of wireless communication terminal, in fact with wireless communication terminal in IP address set do not have correlation.Therefore, in the reality by the fixed ip address different with the IP address that is set in wireless communication terminal is stored in the storage device as fixed terminal IP address, thereby communication object is pretended with respect to the LAN lateral terminal.

Above-mentioned purpose, structure and effect in addition of the present invention will become very clear and definite in the following detailed description.

Description of drawings

Fig. 1 is the structure chart of the communication system of first embodiment.

Fig. 2 is to be the network diagram of prerequisite with epigyny device etc.

Fig. 3 is the network diagram of the related system of first embodiment.

Fig. 4 is the structure chart of jockey.

Fig. 5 is the functional block diagram of the master control part of jockey.

Fig. 6 is the figure of one of the set information on an explanation jockey example.

Fig. 7 be network router functional block diagram.

Fig. 8 is the figure of an example of explanation epigyny device information table.

Fig. 9 is the figure of an example of explanation address mapping table.

Figure 10 is that the sequential chart under the situation that begins to communicate by letter as the network connection service of prerequisite and from epigyny device is used in explanation.

Figure 11 is that the sequential chart under the situation that begins to communicate by letter as the network connection service of prerequisite and from supervisory computer is used in explanation.

Figure 12 is the sequential chart under the situation that begins to communicate by letter from epigyny device among explanation first embodiment.

Figure 13 is the sequential chart under the situation that begins to communicate by letter from epigyny device among explanation first embodiment.

Figure 14 is the figure of explanation address conversion processing.

Figure 15 is the sequential chart under the situation that begins to communicate by letter from supervisory computer among explanation first embodiment.

Figure 16 is the sequential chart under the situation that begins to communicate by letter from supervisory computer among explanation first embodiment.

Figure 17 is the figure of explanation address conversion processing.

Figure 18 is the figure that an example of address mapping table under the situation of pretending epigyny device is described.

Figure 19 is the network diagram that illustrates under the situation of pretending epigyny device.

Figure 20 is the figure that address conversion processing under the situation of pretending epigyny device is described.

Figure 21 is the network diagram of the communication system of second embodiment.

Figure 22 is the figure of an example of explanation epigyny device information table.

Figure 23 is the figure of explanation address conversion processing.

Figure 24 is the structure chart of the communication system of the 3rd embodiment.

Figure 25 is the figure of an example of explanation address administration table.

Figure 26 is the sequential chart under the situation that begins to communicate by letter from epigyny device among explanation the 3rd embodiment.

Figure 27 is the figure of explanation address conversion processing.

Figure 28 is the sequential chart under the situation that begins to communicate by letter from supervisory computer among explanation the 3rd embodiment.

Figure 29 is the sequential chart under the situation that begins to communicate by letter from supervisory computer among explanation the 3rd embodiment.

Figure 30 is the figure of explanation address conversion processing.

Embodiment

(first embodiment)

The communication system of first embodiment of the invention is described with reference to accompanying drawing.Fig. 1 is to use the structure chart of the telemetry system of communication system of the present invention.

As shown in Figure 1, the purpose of native system is to provide a kind of network environment, in this environment by wireless packet communications net 40 for example the epigyny device 10 of the control device etc. of automatic vending machine be connected to enterprises LAN50.Particularly, main purpose of the present invention is, to not transforming the supervisory computer 51 of automatic vending machine (be etc.) etc. for network connection service that the IP address is provided regularly with epigyny device 10 or the terminal among the enterprises LAN50 set in the example of Fig. 1, wireless packet communications net 40 just can use the network connection service that dynamic IP addressing is provided to connecting terminal.In order to achieve this end, making it possible to begin to communicate by letter and can specify this epigyny device 10 the communication that begins from epigyny device 10 with epigyny device 10 from enterprise network internal lan 50 interior terminals also is purpose of the present invention.Describe this communication system below in detail.

Epigyny device 10 is equivalent to data terminal unit (DTE:Data Terminal Equipment).Design this epigyny device 10 with specific telecommunications company accordingly with the network connection service that this telecommunications company provides.Particularly, provide the network connection service of fixed ip address to be prerequisite to use to connecting terminal, connect serve corresponding communication module with this in, and design this epigyny device accordingly corresponding to the connection protocol of this service, authentication protocol etc.

To illustrate that below with above-mentioned epigyny device 10 be the network connection service of prerequisite.In this network connection service, by telecommunications company telephone number is distributed to communication module in advance.In being provided, the wireless packet communications net of this network connection service is provided with the relay that carries out circuit control or packet relay etc.In relay, corresponding to coming assign telephone numbers as the enterprises LAN that connects destination network.In a single day the terminal that has connected communication module calls out the telephone number of the relay in the wireless packet communications net, just is connected to the regulation network of enterprises LAN etc.Only allow to be connected to relay from the communication module of having allocated telephone number in advance.

Example of the network diagram when having utilized epigyny device 10 as the network connection service of prerequisite has been shown among Fig. 2.As shown in Figure 2, epigyny device 10 uses communication module 25,26 to be connected to the wireless packet communications net 45,46 that makes up by network connection service.In the present embodiment, can think that wireless packet communications net 45 and communication module 25 adapt to the PDC standard, and wireless packet communications net 46 and communication module 26 adapt to the PHS standard.In addition, in this service, the IP address that will belong to the network of 192.168.0.0/28 is distributed to the WAN side interface or the communication module 25 of network router 60 regularly.Epigyny device 10 uses terminal type network connection service to be connected to LAN50.Therefore, the IP address of distributing to communication module 25,26 has identical implication with the IP address of distributing to epigyny device 10.In addition, in enterprises LAN50, distribute the IP address of each device to make it belong to the network of 192.168.9.0/24 regularly.Network router 60 receives the grouping of the IP address in the 192.168.0.0/28 from LAN50, and forwards the packet to wireless packet communications net 45,46.On the other hand, network router 60 receives the grouping of the IP address in the 192.168.9.0/24 from wireless packet communications net 45,46, and forwards the packet to LAN50.By such structure, supervisory computer 51 can begin to begin to communicate with the fixed ip address of epigyny device 10, in addition, even for communication from epigyny device 10 beginnings, also can be by specifying this epigyny device 10 with reference to the transmission source IP address of this communication.

The present invention is prerequisite intactly to use such epigyny device 10 and supervisory computer 51, even in the wireless packet communications net 40 of the network connection service that dynamic IP addressing is provided, and also can the building network system.

The following describes the network connection service of using in the present embodiment that dynamic IP addressing is provided.In this network connection service, by telecommunications company in advance to communication module 20 assign telephone numbers.In wireless packet communications net 40, as shown in Figure 1, be provided with the relay 41 that carries out circuit control or packet relay etc.By with specifying predetermined particular number to make a call, thereby the terminal that has connected communication module 20 is connected to wireless packet communications net 40.And, this terminal by and relay 41 between use PAP (Password Authentication Protocol: PAP) verify processing, being connected to as the enterprises LAN50 that connects destination network become possibility.In addition, in above-mentioned pap authentication, specify the connection destination network in the user name by specifying the information that connects the destination to be included in.In this network connection service, by the IP address group of telecommunications company to wireless packet communications net 40 distribution provisions scopes, (Internet Protocol Control Protocol: internet protocol control protocol) communication module 20 is given in the IP address that is included in this IP address group of dynamic assignment respectively by IPCP.In addition, distribute to the IP address of communication module 20 and do not fix, the situation of identical IP address when existing distribution connected with last time also has the situation of distributing different IP addresses.

In addition, in this network connection service, to user's service of giving information.This messenger service is not to use the network connection service of TCP/IP, but install by unique agreement of utilizing wireless communication networks.In this messenger service,,, become possibility thereby send relatively shorter message by the telephone number of designated communication module 20 for the message server 42 of the regulation that in other networks such as wireless packet communications net 40 or internet, is provided with.In the message send request of message server 42, use HTTP.

Below, the network diagram of the system of present embodiment is described with reference to Fig. 3.Fig. 3 is the network diagram of native system.As shown in Figure 3, the same with the network of reference Fig. 2 explanation in this system, provide the fixed ip address that belongs to 192.168.9.0/24 to enterprises LAN50, the fixed ip address that belongs to 192.168.0.0/28 is provided to epigyny device 10.Distribute address group 172.16.0.0/28 to wireless packet communications net 40, the WAN side of the network router on the boundary point between wireless packet communications net 40 and the enterprises LAN50 (being designated hereinafter simply as " router ") 60 has been assigned with fixed ip address 172.16.0.14.In addition, communication module 20 has been dynamically allocated the address in the 172.16.0.0/28 (being expressed as 172.16.0.0.X in the drawings for convenience) when being connected to wireless packet communications net 40.Jockey 1 uses terminal type network connection service to be connected to LAN50.Therefore, the IP address of jockey 1 becomes the IP address of dynamically distributing to communication module 20.In the present invention, in such network environment, can begin from the supervisory computer 51 of enterprises LAN50 and epigyny device 10 to communicate by letter and, can specify this epigyny device 10 under epigyny device 10 and situation that supervisory computer 51 begins to communicate by letter.

Describe jockey 1 below in detail.This jockey 1 is to connect the device that is equivalent to the multiple epigyny device 10 of data terminal unit (DTE:Data Terminal Equipment) and is loaded in the multiple communication equipment 20,25,26 of the above-mentioned communication equipment in the data communication equipment (DCE:Data Circuit-Terminal Equipment).In the jockey 1 of present embodiment, corresponding to the communication module 20 of CDMA standard, the communication module 25 of PDC standard, the communication module 26 of PHS standard.Each communication module the 20,25, the 26th is connected to the communication equipment of the constructed wireless packet communications net of each self-corresponding telecommunications company 40,45,46, and is corresponding with communication standard, communication protocol, service that each telecommunications company determines alone.As mentioned above, epigyny device 10 is designed to corresponding with particular carrier and service that this telecommunications company provided.Particularly, be designed to connect serve corresponding communication module with this in, also with corresponding corresponding to the connection protocol of this service, authentication protocol etc.

The epigyny device 10 of present embodiment can be directly connected to the communication module 25 of PDC standard and the communication module 26 of PHS standard.And, can be connected to enterprises LAN50 via each wireless packet communications net 45,46 by using this communication module 25,26.Need not transform and change this epigyny device 10, the jockey 1 of present embodiment can use the communication module 20 of CDMA standard to be connected to enterprises LAN50 through wireless packet communications net 40.Below, jockey 1 is described in further detail.

The structure chart of the jockey 1 of present embodiment at first, is described with reference to Fig. 4.Fig. 4 shows the state that makes jockey 1 built-in above-mentioned 3 communication modules 20,25,26.In addition, in use, the only built-in actual at least communication module of using 20,25 or 26 gets final product.

Jockey 1 comprises main control substrate 110 in square frame 100, be used to carry the sub-control substrate 200 of PDC standard traffic module 25, be used to carry sub-control substrate 300, the PHS standard traffic module 26 of the communication module 20 of CDMA standard.Sub-control substrate 200 and 300 and communication module 26 be designed to and can on main control substrate 110, freely load and unload.

In addition, the jockey 1 of present embodiment possesses the multiple connector that is used to connect epigyny device in order to be connected to multiple main control unit.Particularly, main control substrate 110 possesses the connector 111 that uses rs-232 standard, the connector 112 that uses the RS-485 standard, use CAN (Controller AreaNetwork: the connector 113 of standard controller area net).

Main control substrate 110 comprises: by as a kind of PLD (Programmable Logic Device: (the Field Programmable Gate Array: the interface circuit 132 of the master control part 120 of field programmable gate array) installing, the interface circuit 131 of rs-232 standard, RS-485 standard, the interface circuit 133 of CAN standard of FPGA programmable logic device).Each interface circuit 131,132,133 is between separately between corresponding connector 111,112,113 and the master control part 120.Like this, master control part 120 can communicate with the epigyny device that is connected to connector 111,112,113 by each interface circuit 131,132,133.

In addition, main control substrate 110 comprises connector 141, the connector 142 that is used for auxiliary connection control basal plate 300 that is used for auxiliary connection control basal plate 200, the connector 143 that is used to connect PHS standard traffic module 26.Each connector 141,142,143 is connected with master control part 120.Therefore, master control part 120 can communicate by the communication module 25 of sub-control substrate 200 with the PDC standard, can also communicate by letter with the communication module 20 of CDMA standard by sub-control substrate 300, in addition, directly communicating by letter with the communication module 26 of PHS standard also becomes possibility.

In addition, the RAM 152 that be provided with the EPROM151 of the control program of storage master control part 120 in the main control substrate 110, uses as the various working regions of master control part 120.In addition, be provided with the module selector switch 160 that is used to select to use any communication module 20,25,26 in the main control substrate 110.Master control part 120 is carried out and communication module 20,25, the 26 corresponding operations of selecting by this module selector switch 160.The structure and the operation of master control part 120 will be explained hereinafter.

This main control substrate 110 when the DC power supply of supplying with according to the outside is operated, by each connector 141,142,143 give sub-control substrate 200 and 300 and the communication module 26 of PHS standard DC power supply is provided.In addition, master control part 120 also comprises the power supply monitoring circuit 170 and the reserve battery 171 of the abnormal conditions of supervision from the DC power supply that the outside is supplied with.In a single day power supply monitoring circuit 170 detects the abnormal conditions from the power supply that the outside is supplied with, and just control provides power supply from reserve battery 171 to the communication module 26 of main control substrate 110 and sub-control substrate 200,300 and PHS standard.In addition, in a single day power supply monitoring circuit 170 detects the abnormal conditions from the power supply that the outside is supplied with, and just these abnormal conditions is notified to master control part 120.In addition, power supply monitoring circuit 170 is supplied with recovery in case detect external power source after power supply is supplied with unusually, just notifies this recovery to master control part 120.

In addition, be provided with the circuit initialization section 180 that is used for initialization and generates the internal circuit of the master control part 120 of installing in the main control substrate 110 by FPGA.The program that is used for initialization and generates the internal circuit of master control part 120 is equipped with in these circuit initialization section 180 inside, according to from the indication that is connected to outside terminal (having omitted in the drawings), forms the circuit that constitutes master control part 120 in FPGA.

Sub-control substrate 200 is used to connect the communication module 25 of main control substrate 11 0 and PDC standard, it comprises the connector 201 that is used to connect main control substrate 110, be used to connect the PDC standard communication module 25 terminal 25a connector 202, be used to connect the interface circuit 210 of main control substrate 110 and communication module 25.Interface circuit 210 is carried out pin (pin) transformation of variables, pin assignments conversion and waveform shaping etc. between connector 202 and connector 201.At this, the communication module 25 of present embodiment also needs special-purpose reserve battery when needs are used to store the memory chip of regulation of telephone number information etc. of self.For corresponding, on sub-control substrate 200, above-mentioned memory chip 220 and reserve battery 230 are connected on the communication module 25 by connector 202 and constitute.In addition, sub-control substrate 200 also provides DC power supply by connector 202 to communication module 25 when the DC power supply that provides according to main control substrate 110 is as mentioned above operated.In addition, the sub-25b of the antenna connection terminal of communication module 25 is connected to antenna connection terminal 191 attached in the square frame 100.

Sub-control substrate 300 is used to connect the communication module 20 of main control substrate 110 and CDMA standard, it comprises the connector 301 that is used to connect main control substrate 110, be used to connect the CDMA standard communication module 20 terminal 20a connector 302, be used to connect the interface circuit 310 of main control substrate 110 and communication module 20.Interface circuit 310 is carried out pin (pin) transformation of variables, pin assignments conversion and waveform shaping etc. between connector 302 and connector 301.In addition, sub-control substrate 300 also provides DC power supply by connector 302 to communication module 20 when the DC power supply that provides from main control substrate 110 is as mentioned above operated.In addition, the sub-20b of the antenna connection terminal of communication module 20 is connected to antenna connection terminal 192 attached in the square frame 100.

The terminal 26a of the communication module 26 of PHS standard is connected to the connector 143 of main control substrate 110.In addition, the sub-26b of the antenna connection terminal of this communication module 26 is connected to antenna connection terminal 193 attached in the square frame 100.

Below, the structure and the operation of master control part 120 are described with reference to Fig. 5.Fig. 5 is the functional block diagram of master control part 120.In addition, only put down in writing the content relevant here, omitted other structure with main idea of the present invention.

The Control on Communication part 122 of the data communication on the circuit that the circuit control section 121, control that master control part as shown in Figure 5,120 comprises circuit control that carry out to determine circuit connection etc. determined by circuit control section 121, with the interface 123 of epigyny device 10, with the interface 124 of communication module 20,25,26.Circuit control section 121 carry out based on the line connection control of AT order, based on LCP (Link ControlProtocol: LCP) and the IP layer of IPCP connect control.In the data communication on the circuit of determining by circuit control section 121,122 execution of Control on Communication part comprise the conversion process of IP address etc. in the header of IP layer.

The communication module 20,25,26 that above-mentioned circuit control section 121 and Control on Communication part 122 are selected according to module selector switch 160 is come hand-off process.In the present embodiment, epigyny device 10 designed to be able to direct connection and utilizes communication module 25,26.Therefore, selecting under the situation of communication module 25 or 26 by module selector switch 160, circuit control section 121 and Control on Communication part 122 are not done special processing for the data between epigyny device 10 and communication module 25 or 26 but are leaked in the past.On the other hand, under the situation of having selected communication module 20, circuit control section 121 and Control on Communication part 122 rule according to the rules processing such as are carried out conversion, leaked and discard to the data between epigyny device 10 and the communication module 20.Data necessary is stored among the setting data storage area 151a of EPROM151 in these data processing.

The data that explanation is stored in setting data storage area 151a with reference to Fig. 6.As shown in Figure 6, stored among the setting data storage area 151a fixed ip address of the call command (comprising telephone number) that is used to be connected to wireless packet communications net 40, epigyny device 10, when being connected to wireless packet communications net 40 needs verify data, connect the IP address of the router 60 of destination.

Below, be arranged on the router 60 on the boundary point of wireless packet communications net 40 and enterprises LAN50 with reference to Fig. 7 explanation.Fig. 7 is the structure chart of router.As shown in Figure 7, router 60 comprises the record storage area 66 of the operation history of WAN side interface 61, LAN side interface 62, the circuit control section 63 of carrying out circuit controls such as definite circuit connection, the Control on Communication part 64 of execution data Control on Communication, the setting data storage area 65 that is stored in data required in the operation of Control on Communication part 64, storage circuit control section 63 and Control on Communication part 64.Circuit control section 63 carries out the control that is connected of IP layer with above-mentioned jockey 1 or message server 42 co-operations.In addition, Control on Communication part 64 on the circuit of determining by circuit control section 63, the IP address that comprises in the header of conversion IP layer.Setting data storage area 65 is the required data of address mapping in the storing communication control section 64 at least.

As shown in Figure 8, the fixed ip address (fixed terminal IP address) of distributing to epigyny device 10, the epigyny device information table 65a that has enumerated the telephone number collection of the communication module 20 that is connected to this epigyny device 10 have been stored in the setting data storage area 65.Here, fixed terminal IP address is the address of distributing to epigyny device 10 when the network connection service of the fixed ip address of describing with reference to Fig. 2 the front is given in utilization.In addition, setting data storage area 65 comprises address mapping table 65b, and the IP address set of being carried out address mapping by Control on Communication part 64 is all stored in the each communication of address mapping table 65b.Particularly, as shown in Figure 9, address mapping table 65b storage as communication ID, the fixed terminal IP address of the management information of each communication of identification and dynamically give IP address (dynamic terminal IP address) collection to the jockey 1 of epigyny device 10 with this fixed terminal IP address, as the IP address of the supervisory computer 51 of the communication object of epigyny device 10 and the WAN side IP address set of router 60.Generate each project of this address mapping table 65b each when communicating by letter between supervisory computer 51 and the epigyny device 10 taken place, and in sign off, it is deleted.In addition, in the present embodiment, the IP address of supervisory computer 51 is not the value that each communication all changes, and the value that is to use predetermined fixed to set.

Below, with reference to the communication sequence of description of drawings native system.At first, before the communication system of explanation present embodiment, be the communication sequence under the situation of the network connection service of prerequisite having used with epigyny device 10 and supervisory computer 51 with reference to description of drawings.As mentioned above, because epigyny device 10 is corresponding to the communication module 25 and the first wireless packet communications net 45 of PDC standard, so jockey 1 does not carry out any processing for the data between epigyny device 10 and the communication module 25.In addition, router 60 does not carry out particular processing yet.In addition, under the situation that the communication module 26 of using the PHS standard and wireless packet communications net 46 are connected to epigyny device 10 enterprises LAN 50, also similarly operate.

At first, with reference to the sequential chart of Figure 10 to being illustrated with the situation that supervisory computer 51 begins to communicate by letter from epigyny device 10.

Here, with the content that illustrates below as prerequisite.That is to say, suppose that communication module 25 distributed telephone number " 080AABB " by telecommunications company.Suppose that telecommunications company has distributed IP address 192.168.0.0/28 in advance, the epigyny device 10 that uses this communication module 25 to be connected to wireless packet communications net 45 has been assigned with IP address 192.168.0.1.Suppose that the IP address as the supervisory computer 51 of communication object is 192.168.9.10.Communication module 25 is passed through with " ATDT " order calling telephone number " 080CCDD ", thereby is connected to the relay of wireless packet communications net 45.

As shown in figure 10, in case 10 pairs of jockeys 1 of epigyny device send " ATDT080CCDD " order (step S1), the circuit control section 121 of jockey 1 just should order former state to be transferred to communication module 25 (step S2).In addition, enumerated that will to generate destination-address be the opportunity that the conducts such as IP grouping time of 192.168.0.10 make a call.By above-mentioned AT order, the relay of communication module 25 in wireless packet communications net 45 make a call (step S3).Here, relay is confirmed the telephone number of the communication module 25 in the source of posting a letter, and refusal is from the connection (step S4) of the outer terminal of contract.The circuit control section 121 of jockey 1 in case by communication module 25 receive line layer connect finish reply " CONNECT " (step S5), just this is replied and is transferred to epigyny device 10 (step S6).

Below, epigyny device 10 begins to be connected to the processing of enterprises LAN50 through wireless packet communications net 45 by PPP.Particularly, determine relay being connected on the IP layer (step S7, S8) with wireless packet communications net 45 according to LCP and IPCP.Here, the circuit control section 121 of jockey 1 leaked the grouping relevant with this LCP and IPCP at both direction.According to as mentioned above, communicate by letter and become possibility, the therefore later data communication (step S9) of just having brought into use upper-layer protocols such as TCP/UDP because epigyny device 10 and enterprises LAN50 carry out the IP layer.In addition, only its destination of relaying or the source IP address of posting a letter are included in IP grouping (step S10) among the 192.168.0.0/28 to the relay of wireless packet communications net 45.

Below, with reference to the sequential chart of Figure 11 to being illustrated with the situation that epigyny device 10 communicates from supervisory computer 51 beginnings.

Supervisory computer 51 is in order to communicate with epigyny device 10 as communication object, sending to allocate in advance to the fixed ip address of this epigyny device 10 is the connection request (step S11) of destination-address, and router 60 is delivered to wireless packet communications net 40 according to common routing rule with this grouping.Like this, the relay of wireless packet communications net 45 is connected to the communication module 25 (step S12) with this corresponding telephone number in IP address with reference to the IP address, destination of this grouping.Communication module 25 has letter (step S13) to jockey 1 notice.Jockey 1 is relayed to epigyny device 10 (step S14) with coming message notice.In a single day reply (the step S15) to coming message notice from epigyny device 10 arranged then, jockey 1 just with between the relay begins to be connected definite the processing based on PPP.Particularly, jockey 1 according to LCP and IPCP determine with relay being connected on the IP layer of wireless packet communications net 45 (step S16, S17).Here, the line control unit 121 of jockey 1 leaked the grouping relevant with this LCP and IPCP at both direction.According to as mentioned above, communicate by letter and become possibility because epigyny device 10 and enterprises LAN50 carry out the IP layer, therefore, later between brings into use the data communication of upper-layer protocols such as TCP/UDP to become possibility.Wherein, router 60 is relayed to epigyny device 10 (step S18) with the connection request of above-mentioned steps S11.And router 60 will be relayed to (step S20) in the supervisory computer 51 from reply (the step S19) of epigyny device 10.According to as mentioned above, communicate by letter and become possibility, the therefore later data communication (step S21) that can bring into use upper-layer protocols such as TCP/UDP because epigyny device 10 and enterprises LAN50 carry out the IP layer.In addition, only its destination of relaying or the source IP address of posting a letter are included in IP grouping (step S22) among the 192.168.0.0/28 to the relay of wireless packet communications net 45.

Below, this epigyny device 10 and supervisory computer 51 are not added any transformation or change with reference to description of drawings, and use the communication module 20 of CDMA standard and the situation of wireless packet communications net 40.

At first, with reference to Figure 12 to Figure 14, to being illustrated with the situation that supervisory computer 51 begins to communicate by letter from epigyny device 10.The sequential chart that Figure 12 and Figure 13 are explanations under epigyny device and the situation that supervisory computer begins to communicate by letter.Figure 14 is the figure that explanation is documented in the conversion process of the IP address from the header that the IP of epigyny device transmission divides into groups.

Here, with the content that illustrates below as prerequisite.That is to say, suppose that communication module 20 distributed telephone number " 080XXYY " by telecommunications company.Suppose that telecommunications company has distributed IP address 172.16.0.0/28, the epigyny device 10 that uses this communication module 20 to be connected to wireless packet communications net 40 has been dynamically allocated among the 172.16.0.0/28 of IP address.Suppose that router 60 has been assigned with address 172.26.0.14.Suppose that the IP address as the supervisory computer 51 of communication object is 192.168.9.10.Communication module 20 is ordered by sending " ATD9999 ", thereby is connected to the relay 41 of wireless packet communications net 40.Relay 41 specifies to connect destination (being enterprises LAN50 in this example) when carrying out authentification of user according to PAP.

As shown in figure 12, in case 10 pairs of jockeys 1 of epigyny device send " ATDT080CCDD " order (step S31), the circuit control section 121 of jockey 1 just transforms to this order " ATD9999 " and is transferred to communication module 20 (step S32).In addition, having enumerated the destination-address that will generate as shown in figure 14 is the opportunity that the conducts such as IP grouping time of 192.168.9.10 make a call.By above-mentioned AT order, the relay 41 of communication module 20 in wireless packet communications net 40 make a call (step S33).The circuit control section 121 of jockey 1 in case by communication module 20 receive line layer connect finish reply " CONNECT " (step S34), just begin jockey 1 is connected to the such processing of enterprises LAN50 by PPP.

At first, the circuit control section 121 of jockey 1 and the relay 41 of wireless packet communications net 40 between beginning LCP consult (step S35).Next, the circuit control section 121 of jockey 1 and the relay 41 of wireless packet communications net 40 between carry out pap authentication and handle (step S36).Handle though imagine this pap authentication in the epigyny device of setting up for wireless packet communications net 45 10, this pap authentication processing is necessary when using wireless packet communications net 40.Wherein, in the present embodiment, jockey 1 is acted on behalf of epigyny device 10 and is carried out authentication processing.In case this authentication processing is finished, circuit control section 121 ipcp negotiations (step S37) of beginning between the relay 41 of jockey 1 and wireless packet communications net 40 of jockey 1.Like this, ipcp negotiation is finished, and the circuit control section 121 of jockey 1 is given dynamic IP address 172.16.0.X by wireless packet communications net 40.The dynamic IP addressing of being given is stored in the storage devices such as EPROM151.

In case ppp negotiation is finished, for router 60, the circuit control section 121 of jockey 1 by UDP grouping with the telephone number of communication module 20, to have indication be that the communication ID of the special value (for example 0) from the calling of epigyny device 10 is notified to router 60 (step S38).And the circuit control section 63 that receives the router 60 of notice from jockey 1 is logined the communication ID project that is comprised the above-mentioned notice in address mapping table 65b.Particularly, the communication ID that is comprised in the above-mentioned notice, the fixed terminal IP address from epigyny device information table 65a obtains, the transmission source IP address (=dynamic terminal IP address) of having stored the grouping of this notice, the regulation IP address of supervisory computer 51, the WAN side IP address of router 60 are signed in to the address mapping table 65b.Like this, the required data of address mapping in this communication have been prepared among the address mapping table 65b.

Next, the circuit control section 63 of router 60 is sent the connection request " CONNECT " (step S39) of IP layer to supervisory computer 51.At this moment, the source IP address of posting a letter of this IP grouping uses the fixed ip address of epigyny device 10.That is to say, obtain the connection request that epigyny device 10 sends earlier in the processing of the step S45-S48 that is grouped in the back relevant with this connection request.In addition, obtain the IP address of epigyny device 10 and supervisory computer 51 with reference to above-mentioned address mapping table 65b.

Next, in case the circuit control section 63 of router 60 receive to above-mentioned connection request reply " ACCEPT " (step S40), just send and comprise the replying of communication ID with reply (step S41) as above-mentioned steps S38 to jockey 1.In addition, become the fixed ip address of epigyny device 10 from the IP address, destination of replying that supervisory computer 51 receives.But the circuit control section 63 of router 60 does not arrive wireless packet communications net 40 with this packet relay in this stage.

The circuit control section 121 that receives the jockey 1 of replying from router 60 on line layer to epigyny device 10 send connect finish reply " CONNECT " (step S42).Epigyny device 10 accept this reply and begin that LCP consults and ipcp negotiation (step S43, S44).Here, the 121 pairs of epigyny devices 10 of circuit control section that should be noted in the discussion above that jockey 1 are replied.Like this, as can be seen, epigyny device 10 execution and front are with reference to the connection processing between the packet communication network 45 of Figure 10 description.

By above processing, between epigyny device 10 and the jockey 1 and carry out communicating by letter of IP layer between jockey 1 and the supervisory computer 51 and become possibility.Wherein, epigyny device 10 sends the connection request " CONNECT " (step S45) of IP layer to supervisory computer 51.This connection request is equivalent to the initial grouping of data communication among the step S9 of Figure 10.Therefore, IP address, destination is the IP address of supervisory computer 51, and the source IP address of posting a letter is the fixed terminal IP address of epigyny device 10.The circuit control section 121 of jockey 1 with the destination IP address mapping of this connection request in the WAN side IP address of router 60, it is sent source IP address transform to the dynamic terminal IP address that wireless packet communications net 40 is given, and send to router 60 (step S46).The circuit control section 63 of router 60 is replied (step S47) at this connection request to jockey 1.The circuit control section 121 that receives this jockey of replying 1 with destination IP address mapping in the fixed terminal IP address of epigyny device 10, transform to the dynamic IP addressing of supervisory computer 51 with sending source IP address, and be transferred to epigyny device 10 (step S48).

By above processing, epigyny device 10 determines the connection of supervisory computer 51 and finishes, and begins the data communication (step S49) to supervisory computer 51.At this, in the Control on Communication part 122 of the Control on Communication part 64 of router 60 and jockey 1, carry out the IP packet header address mapping (step S50, S51).Particularly, as shown in figure 14, in the mutual conversion in fixed terminal IP address (192.168.0.1) and dynamic terminal IP address (172.16.0.X), the WAN side IP address (172.16.0.14) of router 60 and the IP address (192.168.9.10) of supervisory computer 51 be conversion mutually also.By above processing, become possibility with communicating by letter of supervisory computer 51 from what epigyny device 10 began.

Next, with reference to Figure 15 to Figure 17, the supervisory computer 51 from enterprises LAN50 is illustrated with the situation that epigyny device 10 begins to communicate by letter.Figure 15 and Figure 16 are the communication sequential charts that begins from supervisory computer, and Figure 17 is the figure of explanation address conversion process.

The fixed terminal IP address that supervisory computer 51 sends to allocate in advance to this epigyny device 10 for the epigyny device 10 with communication object communicates is the grouping (step S71) of the connection request " CONNECT " of destination.The circuit control section 63 of router 60 is acted on behalf of epigyny device 10, at this connection request to supervisory computer 51 echo replies (step S72).

Next, the circuit control section 63 of router 60 is obtained the corresponding telephone number in IP address, destination that divides into groups with connection request from epigyny device information table 65a.And, circuit control section 63 special generate communication ID in order to discern this communication in, the project of this communication is signed in to address mapping table 65b.And circuit control section 63 utilizes messenger service to send a message to the telephone number that is obtained, and just is connected to the jockey 1 (step S73) of epigyny device 10.At this, the transmission of message is by send a message to message server 42 with HTTP.In addition, comprised above-mentioned communication ID in the message of transmission.

The circuit control section 121 of jockey 1 that receives message begins to the connection processing of the first enterprises LAN50 based on the setting data of storing among the setting data storage area 151a.Particularly, " ATD9999 " order is sent to communication module 20 (step S74).By this AT order, the relay 41 in 20 pairs of wireless packet communications nets of communication module 40 is called out (step S75).In case the circuit control section 121 of jockey 1 by communication module 20 receive on line layer, finished connect reply " CONNECT " (step S76), just begin to carry out jockey 1 is connected to the processing of enterprises LAN 50 by PPP.

At first, begin to carry out LCP between the relay 41 of the circuit control section 121 of jockey 1 and wireless packet communications net 40 and consult (step S77).Then, the circuit control section 121 of jockey 1 carry out and the relay 41 of wireless packet communications net 40 between pap authentication handle (step S78).Then, ipcp negotiation (step S79) is carried out in circuit control section 121 beginnings of jockey 1 between the relay 41 of jockey 1 and wireless packet communications net 40.Like this, ipcp negotiation is finished, and wireless packet communications net 40 is given the circuit control section 121 dynamic IP address 172.16.0.X of jockey 1.The dynamic IP addressing of being given is stored in the storage devices such as EPROM151.

In case ppp negotiation is finished, the circuit control section 121 of jockey 1 just sends the communication ID (step S80) that receives from this router with the UDP grouping to router 60.The circuit control section 63 of router 60 is when jockey 1 transmission comprises replying of communication ID (step S81), communication ID at receiving from jockey 1 signs in to address mapping table 65b with having stored the transmission source IP address (dynamic terminal IP address) of the grouping of this communication ID and the WAN side IP address of router 60.Like this, the required data of address mapping in this communication have just been prepared among the address mapping table 65b.

Next, the circuit control section 63 of router 60 arrives jockey 1 (step S82) with the connection request packet relay of above-mentioned steps S71.At this moment, the destination IP address mapping of this connection request grouping is to the dynamic terminal IP address of jockey 1, and the source IP address of posting a letter transforms to the WAN side IP address of router 60.In a single day the circuit control section 121 of jockey 1 receives this connection request, just to epigyny device 10 notices letter (step S83) is arranged.In a single day epigyny device 10 receives coming message notice, just when will giving jockey 1 (step S84) to the answer notification of this coming message notice, beginning LCP consults and ipcp negotiation (step S85, S86).At this, should be noted in the discussion above that the circuit control section 121 of jockey 1 carries out replying epigyny device 10.Like this, as can be seen, epigyny device 10 and front are with reference to carrying out connection processing between the described packet communication network 45 of Figure 11.

In case this ppp negotiation is finished, the connection request grouping that the circuit control section 121 of jockey 1 will receive from router 60 in above-mentioned steps S82 is transferred to epigyny device 10 (step S87).At this moment, the destination IP address mapping of this connection request grouping is to the fixed terminal IP address of epigyny device 10.The epigyny device 10 that receives the connection request grouping sends this and replys to jockey 1 (step S88).The destination of this acknowledgment packet and the source IP address of posting a letter are the values after the IP address, destination of connection request grouping is exchanged with the source IP address of posting a letter.Jockey 1 will send the dynamic terminal IP address that source IP address transforms to jockey 1, and send to router 60 (step S89).

By above processing, epigyny device 10 determines the connection of supervisory computer 51 and finishes, begins the data communication (step S90) to supervisory computer 51.At this, and the address of the Control on Communication part 64 of router 60 and the Control on Communication part of jockey 1 122 conversion IP packet headers (step S91, S92).Particularly, as shown in figure 17, the Control on Communication part 64 of router 60 in mutual conversion fixed terminal IP address (192.168.0.1) and dynamic terminal IP address (172.16.0.X), the WAN side IP address (172.16.0.14) of also mutual conversion router 60 and the IP address (192.168.9.10) of supervisory computer 51.In addition, the Control on Communication part 122 mutual conversion fixed terminal IP addresses (192.168.0.1) of jockey 1 and dynamic terminal IP address (172.16.0.X).

As above described in detail, in the system of present embodiment, do not need to give fixedly the epigyny device 10 and the supervisory computer 51 of the network connection service of IP and do any change and transformation, just can use the network connection service of giving dynamic IP addressing having used.More particularly, even use the network connection service give dynamic IP addressing, also can begin from supervisory computer 51 to epigyny device 10 communication.In addition, because the transmission source IP address of the grouping that supervisory computer 51 receives becomes the fixed ip address of allocating in advance to epigyny device 10, even so begin to the situation of the communication of supervisory computer 51 from epigyny device 10, supervisory computer 51 also can the designated communication object.

In addition, in the jockey 1 of present embodiment, owing to the data that flow between epigyny device 10 and communication module 20,25,26 are transformed, discard, leaked in order to carry out normal handling in each equipment, so can be absorbed in various agreement between each wireless packet communications net 40,45,46, service, communication module 20,25,26 etc.

In addition, in the system of present embodiment, can be with the epigyny device 10 that connected with respect to disguise oneself as other epigyny device of supervisory computer 51.Such camouflage method describes to Figure 20 with reference to Figure 18.

At this, as shown in figure 18, suppose that first epigyny device 10 of actual connection has been set fixed ip address 192.168.0.1.Therefore, the source IP address of posting a letter of the IP grouping that sends from first epigyny device 10 is 192.168.0.1.In this case, as shown in figure 19, the fixed ip address of distributing to second epigyny device 11 different with first epigyny device 10 and the telephone number that is connected to the communication module 20 of first epigyny device 10 by jockey are stored among the epigyny device information table 65a explicitly.As previously mentioned, in router 60, the telephone number of notifying with jockey 1 is that keyword obtains fixed terminal IP address, and mutual this fixed terminal of conversion IP address and dynamic terminal IP address.Therefore, as shown in figure 20, what store from router 60 sends to the transmission source IP address of IP grouping of supervisory computer 51 is not the address of distributing to first epigyny device 10, but distributes to the address of second epigyny device 11.Like this, disguise oneself as and to communicate with second epigyny device 11 with respect to supervisory computer 51.In addition, the possibility in case this camouflage becomes is because in the address of router 60 supervising the network in the lump, so be suitable for using very much.

(second embodiment)

Below, with reference to the network router of description of drawings second embodiment of the invention.Figure 21 is to use the network diagram of telemetry system of the network router of present embodiment.

As shown in figure 21, having connected the IP address different with supervisory computer 51 in enterprises LAN50 is the 2nd supervisory computer 52 of 192.168.9.11, wherein, supervisory computer 51 is to be that communication object is that the IP address of prerequisite is the computer of 192.168.9.10 with epigyny device 10.The purpose of present embodiment is, epigyny device 10 is not transformed and is changed, and just can carry out the communication as the 2nd supervisory computer 52 of the communication object of epigyny device 10.Because other purpose, structure and effect are identical with first embodiment, so only different places is described at this.

As shown in figure 22, in order to realize such structure, stored the IP address of the supervisory computer 51 that becomes the practical communication of each epigyny device 10 object among the epigyny device information table 65a.

In case the circuit control section 63 of router 60 receives communication ID, telephone number, the fixed ip address (fixed terminal IP address) of epigyny device 10, the IP address (being 192.168.9.10) of communication object by the UDP grouping from the jockey 1 that is connected to epigyny device 10 the example of Figure 21, be the practical communication object of this epigyny device 10 obtained in keyword from epigyny device information table 65a IP address (being 192.168.9.11 in the example of Figure 21) and fixed terminal IP address with this telephone number just.And the IP address of the supervisory computer 52 that the circuit control section 63 of router 60 is obtained with the WAN side IP address of above-mentioned communication ID, the fixed terminal IP address from epigyny device information table 65a obtains, the transmission source IP address of having stored the grouping of above-mentioned notice, router 60, from epigyny device information table 65a is stored in the address mapping table 65b.By above operation, the required data of address mapping in this communication have been prepared among the address mapping table 65b.

Below, in the Control on Communication part 122 of the Control on Communication part 64 of router 60 and jockey 1, carry out the address mapping of the header that IP relevant with this communication divide into groups.Particularly, as shown in figure 23, in mutual conversion fixed terminal IP address and dynamic terminal IP address, the LAN side IP address of mutual conversion router 60 and the IP address of second supervisory computer 52.By above processing, become possibility with communicating by letter of second supervisory computer 52 from what epigyny device 10 began.

According to aforesaid embodiment, do not change and transform epigyny device 10, the connection destination of the connection destination of epigyny device 10 reality being distributed to other becomes possibility.In addition, the IP address system that freely changes enterprises LAN50 side also becomes possibility.For other effect and effect, be identical with first embodiment.In addition, even in the present embodiment, also same with first embodiment, the camouflage of epigyny device is possible.

(the 3rd embodiment)

The third embodiment of the present invention is described with reference to the accompanying drawings.The difference of the communication system of present embodiment and first embodiment mainly is, the form of network connection service in the wireless packet communications net 40.Below, describe this Connection Service in detail at the place different with first embodiment.

In this Connection Service, identical with first embodiment, give IP the address by the dynamic IP technology of giving to connecting terminal.But different with first embodiment, the IP address of giving connecting terminal is predetermined.As shown in figure 24, be provided with Address Management Server 43 in the wireless packet communications net 40.The telephone number of this Address Management Server 43 management connecting terminals, distribute to the IP address list of terminal with this telephone number.Particularly, as shown in figure 25, Address Management Server 43 comprises the address correspondence table 43a of the corresponding relation of having put down in writing telephone number and IP address.In addition, this Address Management Server 43 is for can scheduler correspondence table 43a and provide interface to the user.

In this Connection Service, wireless packet communications net 40 is obtained the telephone number of this connecting terminal when having connected terminal.And, obtain IP address from address correspondence table 43a corresponding to this telephone number, give connecting terminal with the IP address assignment that obtains.In this address assignment, use IPCP.That is to say that in the present embodiment, though use the dynamic IP that is called IPCP to give technology, the distributing IP address is fixed.

In addition, in this Connection Service, wireless packet communications net 40 receives the IP grouping that has corresponding to the IP destination-address of terminal from enterprises LAN50, and, when this terminal is not connected to the state of wireless packet communications net 40, message server 42 is obtained and the corresponding telephone number of this IP grouping from Address Management Server 43, and sends message to this telephone number.This messenger service is not to use the network connection service of TCP/IP, but install by the agreement alone of utilizing wireless communication networks.Like this, terminal just can be recognized the connection request from enterprises LAN50.

In the present embodiment, be accompanied by and use above-mentioned network connection service, the structure of router 60 and jockey 1 is different with action with first embodiment.At first router 60 is described.In addition, the network address system in the present embodiment is with shown in Figure 3 the same.

In above-mentioned first embodiment, router 60 comprises circuit control section 63 and Control on Communication part 64.Circuit control section 63 is carried out and is used the operations such as connection request of short message notification from enterprises LAN50 side.But in the present embodiment, in case grouping flow into wireless packet communications net 40 from enterprises LAN50, wireless packet communications net 40 just automatically sends message.Therefore, in the present embodiment, do not need circuit control section 63.In addition, in above-mentioned first embodiment, owing to the IP address of connecting terminal is not fixed, so in the Control on Communication part 64 of router 60, carry out address conversion processing.But in the present embodiment, because the IP address of connecting terminal is definite by Address Management Server 43, so Control on Communication part 64 does not need to carry out this address conversion processing.Thereby, as long as the Control on Communication part 64 of router 60 has the general relay function that carries out relaying between enterprises LAN50 and wireless packet communications net 40.That is to say, can use with reference to Fig. 2 explanation, as the general router in the communication system of prerequisite 60.

On the other hand, the same with first embodiment, the circuit control section 121 of jockey 1 is determined circuit controls such as circuit connection.In addition, the same with first embodiment, Control on Communication part 122 is controlled the data communication on the circuit of being determined by circuit control section 121.But because circuit control section 121 is corresponding with above-mentioned network connection service with Control on Communication part 122, comparing operation with first embodiment is different.The back will be described the operation of jockey 1.

Next, with reference to the communication sequence in the description of drawings native system.At first, with reference to Figure 26 and 27, the situation that begins to communicate by letter from epigyny device 10 and supervisory computer 51 is described.Figure 26 is the sequential chart under epigyny device and the situation that supervisory computer begins to communicate by letter, and Figure 27 is the figure of the conversion process of the IP address put down in writing in the header of the IP grouping that epigyny device sends of explanation.

As shown in figure 26, in case epigyny device 10 sends " ATDT080CCDD " order (step S101) to jockey 1, the circuit control section 121 of jockey 1 just is transformed to this order " ATD9999 " and is forwarded to communication module 20 (step S102).In addition, enumerating generation destination-address as shown in figure 27 is the opportunity that the conducts such as IP grouping time of 192.168.9.10 make a call.By above-mentioned AT order, the relay 41 of communication module 20 in wireless packet communications net 40 make a call (step S103).The circuit control section 121 of jockey 1 just begins jockey 1 is connected to the such processing of enterprises LAN50 by PPP in case reply " CONNECT " (step S104) by what communication module 20 received that connection on line layer finishes.

At first, the LCP between the relay 41 of circuit control section 121 beginnings of jockey 1 and wireless packet communications net 40 consults (step S105).Next, the circuit control section 121 of jockey 1 carry out and the relay 41 of wireless packet communications net 40 between pap authentication handle (step S106).Handle though set this pap authentication in the epigyny device of setting up for wireless packet communications net 45 10, this pap authentication processing is necessary when using wireless packet communications net 40.Wherein, in the present embodiment, jockey 1 is acted on behalf of epigyny device 10 and is carried out authentication processing.In case this authentication processing is finished, the circuit control section 121 of jockey 1 just begins the ipcp negotiation (step S107) between the relay 41 of jockey 1 and wireless packet communications net 40.Like this, ipcp negotiation is finished, and the circuit control section 121 of jockey 1 is given dynamic IP address 172.16.0.X by wireless packet communications net 40.As mentioned above, be predetermined in this IP address of giving for communication module 20 as connecting terminal, this point and first embodiment differ widely.The dynamic IP addressing of being given is stored in the storage devices such as EPROM151.

In case ppp negotiation is finished, just send to epigyny device 10 (step S108) on line layer, connecting reply " CONNECT " that finish.Epigyny device 10 accept this reply and begin that LCP consults and ipcp negotiation (step S109, S110).Here, the 121 pairs of epigyny devices 10 of circuit control section that should be noted in the discussion above that jockey 1 are replied.Like this, as can be seen, carry out connection processing between epigyny device 10 execution and the packet communication network 45 of front with reference to Figure 10 description.

By above processing, owing to epigyny device 10 was finished with being connected of enterprises LAN50, so epigyny device 10 begins the data communication (step S111) to supervisory computer 51.At this, in the Control on Communication part 122 of jockey 1, carry out the address mapping (step S112) of the header of IP grouping.Particularly, as shown in figure 27, the conversion mutually of fixed terminal IP address (192.168.0.1) and dynamic terminal IP address (172.16.0.X).By above processing, become possibility with communicating by letter of supervisory computer 51 from what epigyny device 10 began.

Next, with reference to Figure 28 to Figure 30, the supervisory computer 51 from enterprises LAN50 is illustrated with the situation that epigyny device 10 begins to communicate by letter.Figure 28 is the sequential chart of communicating by letter that begins from supervisory computer with Figure 29, and Figure 30 is the figure of explanation address conversion process.

At this, supposition has distributed IP address " 172.16.0.1 " for the communication module 20 that is connected to epigyny device 10 in Address Management Server 43.

The IP address " 172.16.0.1 " that supervisory computer 51 sends in order to communicate with epigyny device 10 as communication object with the communication module 20 that is connected to epigyny device 10 is the connection request (step S151) of destination, router 60 defer to common routing rule with this packet relay to wireless packet communications net 40 (step S152).

Wireless packet communications net 40 is obtained and this corresponding telephone number in IP address from Address Management Server 43 with reference to the IP address, destination of the grouping that receives from router 60.And, use messenger service to notify the connection request (step S153) that has from enterprises LAN 50 to this telephone number.In addition, wireless packet communications net 40 is discarded and the relevant grouping of connection request that receives from router 60.

The circuit control section 121 of jockey 1 that receives message begins to the connection processing of the first enterprises LAN50 based on the setting data of storing among the setting data storage area 151a.Particularly, " ATD9999 " order is sent to communication module 20 (step S154).By this AT order, the relay 41 in 20 pairs of wireless packet communications nets of communication module 40 is called out (step S155).In case the circuit control section 121 of jockey 1 by communication module 20 receive on line layer connect finish reply " CONNECT " (step S156), just begin jockey 1 is connected to the such processing of enterprises LAN50 by PPP.

At first, the LCP between the relay 41 of circuit control section 121 beginnings of jockey 1 and wireless packet communications net 40 consults (step S157).Then, the circuit control section 121 of jockey 1 carry out and the relay 41 of wireless packet communications net 40 between pap authentication handle (step S158).Then, circuit control section 121 ipcp negotiations (step S159) of beginning between the relay 41 of jockey 1 and wireless packet communications net 40 of jockey 1.Like this, ipcp negotiation is finished, and wireless packet communications net 40 is given dynamic IP address 172.16.0.X to the circuit control section 121 of jockey 1.As mentioned above, be predetermined in this IP address of giving for communication module 20 as connecting terminal, this point and first embodiment differ widely.The dynamic IP addressing of being given is stored in the storage devices such as EPROM151.

In case ppp negotiation is finished, from the connection request grouping arrival jockey 1 (step S160) of supervisory computer 51.As mentioned above, wireless packet communications net 40 is discarded the grouping that supervisory computer 151 is sent in above-mentioned steps S151.Therefore, supervisory computer 51 can not receive replying of this connection request grouping, owing to the overtime connection request of retransmitting divides into groups.In addition, in the processing of S159, because the time to a certain degree is necessary, therefore several groupings of retransmitting are just overtime once more at above-mentioned steps S153.Therefore, the connection request grouping of arrival jockey 1 is grouping up-to-date in the grouping of retransmitting several times.

In a single day the circuit control section 121 of jockey 1 receives the connection request grouping from supervisory computer 51, just to epigyny device 10 notices letter (step S161) is arranged.In a single day epigyny device 10 receives coming message notice, when just will give jockey 1 (step S162) to the answer notification of this coming message notice, beginning LCP consults and ipcp negotiation (step S163, S164).Carry out replying at this circuit control section 121 that should be noted in the discussion above that jockey 1 to epigyny device 10.Like this, as can be seen, epigyny device 10 and the front carry out connection processing with reference to Figure 11 between the described packet communication network 45.

In case this ppp negotiation is finished, the connection request grouping that the circuit control section 121 of jockey 1 just will receive from supervisory computer 51 in above-mentioned steps S160 is transferred to epigyny device 10 (step S165).10 pairs of these jockeys 1 of epigyny device that receive the connection request grouping are replied (step S166).Jockey 1 is relayed to router 60 (step S167) with this acknowledgment packet.Router 60 is relayed to supervisory computer 51 (step S168) according to common routing rule with this acknowledgment packet.

By above processing, epigyny device 10 determines the connection of supervisory computer 51 and finishes, begins the data communication (step S169) to supervisory computer 51.At this, the Control on Communication part 122 of jockey 1 is carried out the address mapping (step S170) of the header of IP grouping.Particularly, as shown in figure 30, mutual conversion fixed terminal IP address (192.168.0.1) and dynamic terminal IP address (172.16.0.1).

As above described in detail, in the system of present embodiment, because router 60 uses general router, so can more cheap and easily make up this system.For other effect, be the same with first embodiment.

Though more than describe one embodiment of the present of invention in detail, the invention is not restricted to this.For example, in above-mentioned first and second embodiment, though router 60 references have been stored from the transmission source IP address of the grouping of the notice of jockey 1 reception and have been obtained the dynamic IP addressing of giving this jockey 1, comprise this dynamic IP addressing and also be fine in the content of notice.

In addition, though the telemetry system of carrying out the management of automatic vending machine has been described, in other telemetry system, automatic remote information processing system, also can implement the present invention in the various embodiments described above.

In addition, in the various embodiments described above, though illustration the communication module of PDC standard, the communication module of CDMA standard, the communication module of PHS standard, even other standard also can be implemented the present invention.Similarly, for the interface standard of epigyny device side, also can use above-mentioned standard standard in addition.

In addition, in the various embodiments described above, as network connection service in the wireless packet communications net 45,46 and the difference between the network connection service in the wireless packet communications net 40, though illustration authentication method, address system, address providing method (fixed ip address is given or dynamic IP addressing is given), difference is also can be suitable for the present invention under the situation of combination of these any one or they in several.In addition, as required, also can in jockey, absorb other difference.For example, in the above-described embodiments, though in wireless packet communications net 40, carried out pap authentication, but, carry out (Challenge Handshake Authentication Protocol: challenge handshake authentication protocol) under the situation of Ren Zheng communication network, also can in jockey, implement CHAP being connected to such as CHAP.

In addition, though in the various embodiments described above, make jockey 1 built-in three communication modules 20,25,26, thereby can use each wireless packet communications net 40,45,46 arbitrarily, but can also be only built-in be connected communication module 20,25,26 in any one.

Claims (12)

1. communication system is used by the wireless packet communications net to connect LAN and wireless communication terminal and the network connection service of the IP address in wireless communication terminal provides first address space dynamically, wherein,

Disposed network router on the boundary point of wireless packet communications net and LAN,

Wireless communication terminal comprises: be connected to the wireless packet communications net communication equipment, use epigyny device that this communication equipment communicates, between communication equipment and epigyny device the jockey of trunking traffic,

In epigyny device, the IP address that the network connection service that allocating in advance provides the IP address in second address space is regularly used is as its own IP address, and be provided with regularly in the three-address space the IP address and as the IP address of LAN lateral terminal,

Jockey comprises communication control unit, the IP address in first address space in the header of the IP that receives and dispatches being stored in grouping and second or the three-address space in the IP address carry out mutual conversion.

2. according to the communication system of claim 1, wherein,

The communication control unit of described jockey carries out mutual conversion to IP address (dynamic terminal IP address) that dynamically offers jockey when network connects and the IP address of allocating in advance to epigyny device (fixed terminal IP address).

3. according to the communication system of claim 1, wherein, described network router has communication control unit, the IP address in first address space of storing in the header to the IP grouping of transmitting-receiving and second or the three-address space in the IP address carry out mutual conversion.

4. according to the communication system of claim 3, wherein,

The communication control unit of described jockey and the communication control unit of network router, mutual conversion is carried out in the IP address (fixed terminal IP address) that dynamically offers the IP address (dynamic terminal IP address) of jockey when network is connected and allocate in advance to epigyny device, meanwhile, mutual conversion is carried out in the IP address of the radio packet communication network side of distributing to network router and the IP address of terminal of LAN side.

5. according to the communication system of claim 4, wherein,

Described jockey has the connection control device, when in a single day this connection control device has the communication from epigyny device to the LAN lateral terminal to begin to ask, just determine and being connected of wireless packet communications net, and be notified to network router to the telephone number of major general's communication equipment

Described network router has:

First storage device, described the 1st storage device in advance storing communication equipment telephone number and use the combination of fixed terminal IP address of the epigyny device of this communication equipment; With

The circuit control part, from the 1st storage device, obtain the fixed terminal IP address of epigyny device based on being included in telephone number from the notice that jockey receives, meanwhile, from the header of the grouping of having stored this notice, obtain the IP address that dynamically offers jockey.

6. according to the communication system of claim 4, wherein,

Described network router has:

The 1st storage device, the combination of the fixed terminal IP address of the epigyny device of the telephone number of storing communication equipment and this communication equipment of use in advance; With

Connect control device; In case exist the communication from the LAN lateral terminal to fixed terminal IP address to begin request; Just from described the 1st storage device, obtain the telephone number corresponding to this fixed terminal IP address; Generate the management information of this communication of identification; And described fixed terminal IP address and management information are stored in the 1st storage device explicitly; Use the messenger service that provides in the wireless packet communications net described management information to be notified the telephone number of from described storage device, obtaining to having

Described jockey has the connection control device, this connection control device is in case receive described notice from network router and just determine and being connected of wireless packet communications net, storage package is contained in the described management information in this notice in the 2nd storage device of regulation, and use determined network connection service to reply described management information to network router

The connection control device of described network router is in case receive management information from jockey, the dynamic terminal IP address that from the IP grouping of having stored management information, obtains wireless communication terminal just, and store this dynamic terminal IP address explicitly with the management information that is stored in described the 1st storage device

The communication control unit of described network router carries out described conversion process based on each IP address that is stored in described the 1st storage device,

The communication control unit of described jockey carries out described conversion process based on each IP address that is stored in described the 2nd storage device.

7. communication system according to claim 4, wherein,

In the described radio packet communication network, flow into wireless packet communications net from the LAN lateral terminal by network router in case have the IP grouping of the IP address in the 1st address space, the messenger service that sends message corresponding to the wireless communication terminal of the telephone number of described IP address to having just is provided

Described jockey has the connection control device, and this connection control device is in case receive message and just determine and being connected of wireless packet communications net from the wireless packet communications net.

8. a network router is configured on the boundary point of LAN and wireless packet communications net, wherein

In described wireless packet communications net, provide to connect LAN and wireless communication terminal and the network connection service of the IP address in wireless communication terminal provides the 1st address space dynamically,

Described network router has:

Storage device is stored the telephone number of wireless communication terminal in advance and is distributed to the combination of the IP address (fixed terminal IP address) in the 2nd address space of this wireless communication terminal;

Connect control device, determine the connection between LAN lateral terminal and the wireless communication terminal; With

Address conversion device, conversion are stored in the IP address in the IP packet header between LAN lateral terminal and the wireless communication terminal,

In case exist from of the communication of LAN lateral terminal and begin request to fixed terminal IP address, described connection control device just obtains the telephone number corresponding to described fixed terminal IP address from described storage device, generate the management information of this communication of identification, and make described fixed terminal IP address and management information be stored in the storage device explicitly, use the messenger service that provides in the wireless packet communications net to notify described management information to having the telephone number of obtaining from described storage device, in case use network connection service to receive the management information that sends by wireless communication terminal according to described notice, just from the IP grouping of having stored this management information, obtain the IP address (dynamic terminal IP address) that dynamically offers wireless communication terminal, and store described dynamic terminal IP address explicitly with the management information that is stored in the described storage device

Described address conversion device is based on each address information that is stored in the described storage device, mutually conversion is stored in the IP address of the wireless packet communications net side of IP address in the header that the IP relevant with described communication divide into groups, the LAN lateral terminal and network router, meanwhile, mutual conversion fixed terminal IP address and dynamic terminal IP address.

9. network router according to Claim 8, wherein,

In case exist the communication of using network connection service to send to begin request from wireless communication terminal, described connection control device just obtains from described storage device and the fixed terminal IP address that is included in this corresponding wireless communication terminal of telephone number in beginning to ask of communicating by letter, from this communication begins to ask, obtain dynamically to the dynamic terminal IP address that wireless communication terminal provides, and store this fixed terminal IP address and become the IP address and the dynamic terminal IP address of the LAN lateral terminal on this communication objective ground;

Described address conversion device is based on each address information that is stored in the described storage device, mutually conversion is stored in the IP address of radio packet communication network side in the IP packet header relevant with described communication, LAN lateral terminal IP address and network router, meanwhile, mutual conversion fixed terminal IP address and dynamic terminal IP address.

10. according to the network router of claim 9, wherein,

Described storage device is stored the combination of the IP address that is connected the ground terminal of the telephone number of wireless communication terminal and this wireless communication terminal of LAN side in advance,

Described connection control device obtains from described storage device and the corresponding LAN lateral terminal of the telephone number IP address of notifying from wireless communication terminal,

Described address conversion device is based on the various address informations that are stored in described storage device, conversion is stored in the IP address of the radio packet communication network side of IP address in the IP packet header relevant with described communication, described LAN lateral terminal and network router mutually, meanwhile, mutual conversion fixed terminal IP address and dynamic terminal IP address.

11. network router according to Claim 8 wherein, also has the history store of the operation history of described connection control device of storage and address conversion device.

12. method that the connection between described LAN lateral terminal and the wireless communication terminal is provided wireless communication terminal from described LAN lateral terminal in the network connection service that is provided, described network connection service connects LAN and wireless communication terminal and the IP address in wireless communication terminal provides the 1st address space dynamically by the wireless packet communications net, wherein

The network router that is configured on the boundary point of described LAN and wireless packet communications net has storage device, this storage device is stored the telephone number of wireless communication terminal in advance and is distributed to the combination of the IP address (fixed terminal IP address) in the 2nd address space of this wireless communication terminal, and described method comprises:

(a) notifying process; If exist the communication take fixed terminal IP address as the destination of sending from the LAN lateral terminal to network router to begin request; Then the connection control device of network router just obtains the telephone number corresponding to this fixed terminal IP address from described storage device; And the management information of this communication of generation identification; Make described fixed terminal IP address and management information be stored in explicitly in the storage device; The messenger service of utilizing the wireless packet communications net to provide is notified described management information to have the telephone number of obtaining from described storage device

(b) response steps, the wireless communication terminal that has received notice from network router use network connection service to be contained in management information this notice to the network router response packet;

(c) storing step, if received management information from wireless communication terminal, then the connection control device of network router just obtains the IP address (dynamic terminal IP address) that dynamically offers wireless communication terminal from the IP grouping of having stored this management information, and be stored in management information in the described storage device store explicitly this dynamic terminal IP address and

(d) shift step, then, the communication control unit of network router is based on each address information that is stored in the described storage device, mutually conversion be stored in the IP packet header relevant with described communication, LAN lateral terminal IP address and network router radio packet communication network side IP address, meanwhile, mutual conversion fixed terminal IP address and dynamic terminal IP address.

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