CN1455526A - Communication device, communication system and programme - Google Patents
Communication device, communication system and programme Download PDFInfo
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- CN1455526A CN1455526A CN03136008A CN03136008A CN1455526A CN 1455526 A CN1455526 A CN 1455526A CN 03136008 A CN03136008 A CN 03136008A CN 03136008 A CN03136008 A CN 03136008A CN 1455526 A CN1455526 A CN 1455526A
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Abstract
Provided is a communication device in which network resources in data communications, particularly, resources (radio channels) for radio communications are effectively utilized and the procedure of re-connection watched from an application or user side is not required on a terminal side even in the case of disconnection. Connection information is stored with an IP address applied from a server when a dial-up IP connection is performed for the first time and when a data communication is stopped for a prescribed time, the connection is cut off. When the communication procedure based on the IP address is started again, the dial-up IP connection is performed again to be allocated with a new IP address. After the re-connection, as an address of the terminal, the IP address is set to a packet addressed to the terminal and the new IP address is set to a packet addressed to the server.
Description
Technical field
The present invention relates to a kind of communicator, particularly the data communication modem card.
Background technology
Traditional passing through in the data communication that wireless communication line such as personal handyphone system or public telephone circuit etc. carry out, even do not receive when sending data, the connection between end side, communication circuit network and the server side is also often being continued.
And, connect (PPP (Point to point protoco1: point-to-point protocol) connection),, communicate according to this IP address later on from the terminal distribution IP address of server side to connecting by the IP of dialing.And this IP address is released during cut-out, distributes new IP address when connecting again.In a single day thereby the application program of end side (Web browser etc.) communicates processing by the IP address of initial connection, is cut off if call out, next IP address just changes, thereby gets the formality that connects again at application side once more.
As mentioned above, in the such wireless communication line of personal handyphone system, as continuing to be connected through the end side of being everlasting, base station and server side, the service efficiency of wireless channel will descend, and the waste that causes the Internet resources that comprise the public telephone circuit to use.
In a single day IP by dialing connects in addition, is cut off if connect, the result carries out the formality that is used for connecting again once more at application side again, thereby the user needs the added burden cost.
Summary of the invention
The present invention in view of the above-mentioned problems, a kind of such communicator is provided, this device is in data communication, can effectively utilize Internet resources, the resource of radio communication (wireless channel) particularly, in end side, be cut off even connect, do not need to connect again formality from application side or from user side yet.
Communicator of the present invention, response comes the connection request of self terminal to be connected to server via communication line in the dialup ip mode, it is characterized in that being provided with: storage is in order to the link information of carrying out connecting to described server dialup ip and the moment that is connected at the enforcement dialup ip storage device from the IP address that server provides; When interrupting, data communication at the fixed time cuts off the connection management device that connects; After connecting cut-out, when restarting to communicate by letter from the described IP address of described terminal, carrying out dialup ip according to described link information once more to described server connects, acceptance is from the distribution of the new IP address that described server provides, and in described storage device the jockey again of this new IP address of storage; After connecting again,, in giving the packet of described terminal, set described IP address, in giving described data in server grouping, set the address conversion device of described new IP address as described terminal address.
In addition, communicator of the present invention, response comes the connection request of self terminal to connect to the server dialup ip via communication line, it is characterized in that having: storage in order to the link information of carrying out connecting with dialup ip to described server with implementing the storage device that dialup ip is connected the IP address that the moment provides by server; Because connecting, the main cause on the communication line is cut off, then based on restart communication from the described IP address of described terminal, can carry out dialup ip once more to server according to described link information connects, reception is from the distribution of the new IP address that described server provides, and in described storage device the jockey again of this new IP address of storage; After connecting again,, in giving the packet of described terminal, set described IP address, in giving described data in server grouping, set the address conversion device of described new IP address as described terminal address.
In addition, also wireless communication line of described communication line.
In addition, described communication device data communication card.
In addition, the communication system that also constitutes of the present invention by described communicator, as the computer of described terminal.
In addition, also can comprise in the structure of described communication system: the described server that comprises the communication line of wireless communication line and internet, is connected by this communication line.
In addition, program of the present invention, be to come the program of the connection request of self terminal by communication line this communicator of control in the communicator that the server dialup ip connects in response, it is characterized in that comprising: storage is carried out the step that dialup ip connects the link information of usefulness to described server; The step of the IP address that provides by server when implementing the dialup ip connection is provided; When interrupting, the data communication of the scheduled time cuts off step of connecting; After connecting cut-out, when basis restarts to communicate by letter from the described IP address of described terminal, carry out dialup ip step of connecting once more to described server according to described link information; Acceptance provides new IP address assignment by described server, and stores the step of this new IP address; After connecting again,, in giving the packet of described terminal, set described IP address, in giving described data in server grouping, set the step of described new IP address as described terminal address.
In addition, program of the present invention, be response come the self terminal connection request by communication line in the communication system that the server dialup ip connects, control the program of this communicator, it is characterized in that comprising: storage is used for the step that dialup ip is connected to the link information of described server; The step of the IP address that provides by server when carrying out the dialup ip connection is provided; Be cut off because the main cause on the communication line connects, and when newly beginning to communicate by letter, carry out once more the step that dialup ip is connected to described server according to described link information from the described IP of described terminal address; The new IP address assignment that acceptance provides from described server, and store the step of this new IP address; After connecting again,, in giving the packet of described terminal, set described IP address, in giving described data in server grouping, set the step of described new IP address as the address of described terminal.
Description of drawings
Fig. 1 is the schematic block diagram of structure of the data communication card of expression one embodiment of the present of invention;
Fig. 2 is the integrally-built skeleton diagram of (RAS) from PC to the server in the data communication that comprises described embodiment is stuck in.
Fig. 3 is the communication steps schematic diagram between data communication card, PC and the RAS of described embodiment;
The explanation of symbol: the 1st, data communication card (communicator); 1a is a radio communication device; 1b is the PC interface arrangement; 1c is CPU (a connection management device, jockey, address conversion device) again; 1d is memory (storage device).
Embodiment
Below, with reference to the description of drawings embodiments of the invention.
Fig. 1 is the block diagram that constitutes as one embodiment of the invention signal data communication card.The data communication card that comprises same embodiment among Fig. 2, summary represent that the integral body of from PC to the server (RAS) constitutes.
Among Fig. 1, symbol 1 is the data communication card of present embodiment.In addition, symbol 1a is a radio communication device, and this radio communication device 1a is based on the radio communication specification of regulation in the personal handyphone system etc., when carrying out the receiving and sending messages of wireless signal, sends signal modulation and receiving signal demodulation.And symbol 1b is the PC interface arrangement, and this PC interface arrangement 1b calculates the interface of machine (to call PC in the following text) in order to be electrically connected this data communication card and personal-machine.Adopt structure in the present embodiment according to PC card (PC Card) specification or compact flash storage card (Compact Flash) specification.
In addition, symbol 1c is CPU (Central Processing Unit), the operation of control data communication card 1 each several part, and it in the formality of the dial-up connection IP of server (RAS:Remote Access Server), carries out data communication control in implementation.For example hypothesis is a personal handyphone system, carries out according to the regulation of PIAFS (Personal handy system Internet Access Forum Standard), can finish the access to the internet.And, below for simply, it is that dialup ip connects the access point of (PPP connection) that above-mentioned RAS constitutes, and provides various services to the PC side.
In addition, symbol 1d is a memory, is made of RAM (Random-Access Memory) and ROM (Read-Only Memory).RAM is used for storage: as the service area of above-mentioned CPU 1c, and IP address allocated when dialup ip connects (former IP described later address and new IP address); As in order to carry out the link information that dialup ip connects; The telephone number and the authentication information (account number, password etc.) that connect purpose side's (access point) from the dialup ip of PC side input; And other necessary information (existing with ... the other side's who connects purpose the server address of network configuration and portal number etc.).On the other hand, the ROM storage is by necessary various data in CPU1c loading and control program of carrying out and the communication process.
In the data communication card 1 of present embodiment, to radio communication device 1a and PC interface arrangement 1b, carry out control as above-mentioned based on the communication steps of above-mentioned specification by CPU 1c.
The data communication card 1 of this structure is electrically connected with PC 2 as shown in Figure 2, and the wireless communication line net (Fig. 2: symbol 10～12) connect to the RAS 3 that is positioned at ISP (Internet Service Provider) by radio communication.
The data communication card 1 of present embodiment is by above-mentioned formation, but the data communication card that its PC that to be tradition have connects has the common structure and the function of data communication card of carrying out data communication by personal handyphone system.That is to say that from the data communication card that is connected with PC, the wireless communication line net by personal handyphone system is implemented to connect to the RAS dialup ip, from data communication begin to common processing mode connection be cut to, their function is identical.Below, with regard to the difference and the characteristic of that have with the traditional data communication card of the data communication card 1 of present embodiment.
The connection request that data communication card 1 response is used from the PC side carries out connecting according to the initial dialup ip of common processing.After this initial dialup ip connects, deposited in the memory 1d by the above-mentioned link information of RAS side IP address allocated (below, claim that this IP address is former IP address) from the input of PC side.Connect at the initial dialup ip of finishing over by common processing this moment, the stored occasion of former IP address and link information, and former IP address that rewriting obtains and link information are also preserved.
As above, finishing initial dialup ip connects.After the connection, carry out common data communication, the time of being set in addition, (this time was set in the RAM of net side appointment, but also can be stored in advance among the ROM, perhaps among RAM, set from the PC side), when data communication was interrupted, CPU 1c connected the dialup ip that RAS request cut-out connects now, finish present dialup ip and connect (calling such being in the connection in logic at application side in the following text, and the state of having a mind to cut off 3 physical connections is (Dormant) state that stops).The situation that is caused the cut-out that this dialup ip connects by some main cause on the communication line is also arranged, under this situation, in the present embodiment, need not notify this connection of PC side to be cut off.Thereby the PC side is used and is continued to press the state of operation that connects in logic.
Thereafter, RAS is visited in the application of PC side once more, and CPU1c begins once more the processing that the dialup ip to RAS connects when promptly beginning communication steps again according to former IP address.At this moment, insert RAS, receive the distribution of new IP address (below, claim that this IP address is new IP address) according to the above-mentioned link information of in RAM, storing.Then, the new IP address that storage is assigned with in memory 1d.At this moment, finish in the past again and to connect when stored new IP address has existed earlier, be rewritten as the new IP address of this time obtaining and add preservation (and, as link information, when further storage is connected the information of usefulness with other RAS, make it possible to switch the RAS that connects purpose purpose side).
Then, for using from the visit to RAS of the former IP address of PC, CPU 1c is new IP address with self the address (transmission source IP address) that comprises in the packet (transmission packet) that sends from former IP address mapping, and sends this packet.On the other hand, the transmission destination IP address of the grouped data (reception packet) that will receive from RAS is former IP address and offers PC from new IP address mapping.By such processing, the application program that PC holds is carried out data communication in identical connection status (set condition) former state ground in the time of can connecting beginning with dialup ip, and operate the spot thereby the user can be unaware of the connection cut-out.
Handle more than the implementation to accepting to cut off the dialup ip connection requests from the application of PC side.
Below, the explanation operation of the data communication card 1 of the present embodiment of formation so together is through the PC of data communication card 1 connection thus and the operation of RAS.Fig. 3 illustrates the communication steps between this data communication card 1, PC, the RAS.
Beginning is accepted from the call connection request of PC to RAS, and data communication card 1 is according to the telephone number that link information comprised, and begins connection that RAS is called out, call out connect establish after, return to PC and to notify replying of this point.
After this, PC begins to connect to the dialup ip of RAS the communication steps of (PPP connection).Corresponding data communication card 1 carries out the processing to the PPP of RAS connection therewith, sets up the data link between PC and the RAS.This moment is from RAS side direction PC distributing IP address (former IP address).In the above process, data communication card 1 storage is from the link information and the former IP address of the input of PC side.
After this, between PC and RAS, use above-mentioned former IP address to use and carry out data communication as the address of PC, if but at preset time, data communication is interrupted, and then data communication card 1 is carried out the processing of cutting off the calling that connects now, the beginning dormant state.From this moment, the PC side is applied in and still remains former communications status in logic, but is cut off physically, and discharges former IP address and session thereof in the RAS side.
Thereafter, as begin from the communication of PC side data the telephone number that data communication card 1 basis is comprised again in link information, carry out again the connection again of the calling of RAS, after calling out the connection establishment, carry out processing once more, establish the data link between data communication card 1 and the RAS to the PPP of RAS connection.At this moment, distribute new IP address (new IP address), data communication card 1 this new IP address of storage from RAS.
After this, data communication card 1 correspondence is from the access of PC to RAS, to be new IP address from former IP address mapping as the address of the PC side that sends the destination IP address, and transmission packet, for the packet that receives from RAS, to be former IP address from new IP address mapping as the PC side address that sends the destination IP address, and offer PC.
And, carry out repeatedly to the processing that finishes to begin once more after the dormant state data communication from the cutting off calling that begins above-mentioned dormant state, cut off request up to the connection that receives from the PC side.
Have, the treatment step of above-mentioned explanation is an example again, is not limited to the flow process of above-mentioned processing.
Though more than describe embodiments of the invention in detail with reference to accompanying drawing, concrete structure is not limited thereto embodiment, comprises that also not breaking away from the present invention wants structure of point range etc.For example, also can calculate the function that the machine system side adds the processing unit among Fig. 1, calculate the machine system side at this machine and carry out connecting/processing of connection again by dialup ip to machines such as personal-machine calculation machines.And, comprise the hardware of OS and ancillary equipment etc. in that this is so-called " machine is calculated machine system ".In addition, if utilizing the occasion of WWW system, suppose that " machine is calculated the machine system " comprises that also homepage provides environment (or display environment).
And, also can be like this, record is in order to realizing the functional programs of processing unit among Fig. 1 on the recording medium that machine calculation machine can read, and reads the program of this recording medium and carried out and carry out dialup ip and connect/processing of connection again by making above-mentioned machine calculate the machine system.
Here, " recording medium that machine calculation machine can read " is meant floppy disc (flexible disc), photomagneto disk, removable medias such as ROM, CD-ROM, and machine is calculated built-in storage devices such as hard disk in the machine system." recording medium that machine calculation machine can read " also comprises the device that program can be kept the memory of certain hour as the volatile memory (RAM) that machine is calculated the machine internal system that comprises that becomes server and client by the occasion of communication line routers such as network such as internet and telephone line.
In addition, said procedure is calculated the machine system by the machine that has this program in storage device etc. and is calculated the machine system transmissions by other machine of the transmission wave direction in transfer medium or the transfer medium.Here, " transfer medium " of transmission procedure refers to have the medium by communication lines (communication network) such as networks such as internet (communication network) or telephone line transmission informational function.
In addition, said procedure also can only be realized the part of described function.In addition, neither be with realizing described functional programs, promptly so-called differential file (difference program) with the combination of calculating program stored in the machine system at machine.
As above detailed description, according to the present invention, when interrupting occurring, cut off and connect as the data communication of the scheduled time, according to the occasion that begins communication steps from the described IP address of described terminal again, after connecting again, address as described terminal, in giving the packet of described terminal, set described IP address, in giving described data in server grouping, set the IP address mapping of described new IP address, therefore, the physical connection of the terminal of connection request is cut off even export originally, and the dialup ip that also can continue in logic connects, and the IP address that the dialup ip that using provides initial connects is to the access of originally connection purpose purpose side.That is to say, also do not need to connect again formality from application or user side even connect disconnection in end side.And, cut off connection when interrupting, thereby can effectively utilize Internet resources in the data communication, particularly wireless communication resources (wireless channel) owing to data communication at the fixed time.
And according to the present invention, even connect to disconnect because of the reason on the communication line causes, this communicator also can connect again, carries out above-mentioned address mapping, thereby terminal can be proceeded to the access of originally connection purpose side.For communication line is easily because the main cause on the communication line causes the occasion that connects the wireless communication line that disconnects, especially effective.
And, by in data communication card, adding above-mentioned functions, do not need to carry out the change of the network equipment or for this reason and do not develop, thereby can cut down the cost of development.
Claims (8)
1. a communicator responds the connection request of self terminal to be connected to server via communication line by dialup ip, it is characterized in that being provided with:
Storage is in order to the link information of carrying out connecting to described server dialup ip and the moment that is connected at the enforcement dialup ip storage device from the IP address that server provides;
Cut off the connection management device that connects during the predetermined time data communication disruption;
After connecting cut-out, when beginning communication steps again according to described IP address from described terminal, carrying out dialup ip according to described link information once more to described server connects, acceptance is from the distribution of the new IP address that described server provides, and in described storage device the jockey again of this new IP address of storage;
After connecting again,, in giving described terminal data grouping, set described IP address, in giving described server data grouping, set the address conversion device of described new IP address as described terminal address.
2. a communicator responds the connection request of self terminal to be connected to server via communication line by the dialup ip connected mode, it is characterized in that being provided with:
Storage in order to the link information of carrying out connecting to described server dialup ip with implementing the storage device that dialup ip is connected the IP address that the moment provides by server;
Because connecting, the main cause on the communication line is cut off, and when beginning communication steps again according to described IP address from described terminal, reason is carried out dialup ip according to described link information once more to server and is connected, reception is from the distribution of the new IP address that described server provides, and in described storage device the jockey again of this new IP address of storage;
After connecting again,, in giving the packet of described terminal, set described IP address, in giving described data in server grouping, set the address conversion device of described new IP address as described terminal address.
3. as the communicator of record in right request 1 or 2, it is characterized in that:
Described communication line is a wireless communication line.
4. as any one communicator of putting down in writing of accessory rights request 1 to 3, it is characterized in that:
Described communicator is a data communication card.
5. communication system is characterized in that:
The computer of terminal constitutes by the communicator described in right request 4 and as described in becoming.
6. the communication system of being put down in writing as right request 5 is characterized in that further being provided with:
The communication line that comprises wireless communication line and internet, and pass through the described server that this communication line connects.
7. program of coming the connection request of self terminal via communication line this communicator of control in the communicator that server connects with dialup ip in response is characterized in that comprising:
Storage is carried out the step that dialup ip connects the link information of usefulness to described server;
Be stored in the step of having implemented the IP address that moment that dialup ip connects provides by server;
When interrupting, the data communication of the scheduled time cuts off step of connecting;
After connecting cut-out, when communicating step again, carry out dialup ip step of connecting once more to described server according to described link information according to described IP address from described terminal;
The new IP address assignment that acceptance is provided by described service, and store the step of this new IP address;
After connecting again,, in giving the packet of described terminal, set described IP address, in giving described data in server grouping, set the step of described new IP address as described terminal address.
8. one kind is come the self terminal connection request to control the program of this communicator via communication line in the communication system that server connects in the dialup ip mode in response, it is characterized in that comprising:
Storage is used for the step that dialup ip is connected to the link information of described server;
Be stored in the step of having carried out the IP address that moment that dialup ip connects provides by server;
Be cut off because of the main cause on the communication line connects, and when communicating step again, carry out once more the step that dialup ip is connected to described server according to described link information according to described IP address from described terminal;
Acceptance is from the distribution of the new IP address that described server provides, and stores the step of this new IP address;
After connecting again, as the address of described terminal, in the packet of described terminal, setting described IP address, in the step of in described data in server grouping, setting described new IP address.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002084018A JP3599717B2 (en) | 2002-03-25 | 2002-03-25 | Communication device, communication system and program thereof |
| JP84018/2002 | 2002-03-25 | ||
| JP84018/02 | 2002-03-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1455526A true CN1455526A (en) | 2003-11-12 |
| CN1291557C CN1291557C (en) | 2006-12-20 |
Family
ID=29231552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031360084A Expired - Fee Related CN1291557C (en) | 2002-03-25 | 2003-03-25 | Communication device, communication system and programme |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3599717B2 (en) |
| CN (1) | CN1291557C (en) |
| TW (1) | TW200306100A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101854429A (en) * | 2010-03-10 | 2010-10-06 | 深圳市同洲电子股份有限公司 | Control method of network connection and mobile communication terminal |
| CN101635816B (en) * | 2008-07-25 | 2011-06-15 | 索尼株式会社 | Signal processing apparatus, signal processing method, and program |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009253827A (en) * | 2008-04-09 | 2009-10-29 | Minerva:Kk | Information communication terminal, information communication system, and information distribution method |
| US9807602B2 (en) | 2010-04-07 | 2017-10-31 | Qualcomm Incorporated | Apparatus and method for connection establishment in a communications network |
| US9426718B2 (en) | 2012-05-16 | 2016-08-23 | Qualcomm Incorporated | Systems and methods for data exchange over common communication links |
| CN103384281B (en) * | 2013-06-26 | 2016-08-24 | 天津汉柏汉安信息技术有限公司 | A kind of method preventing EZVPN dialing failed |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07123174A (en) * | 1993-10-21 | 1995-05-12 | Fujitsu Ltd | Communication method for line exchange network and communication controller |
| JPH10336243A (en) * | 1997-05-30 | 1998-12-18 | Nec Corp | Inter-dialup router communication system and inter-dialup router communication method |
| JPH1155326A (en) * | 1997-08-05 | 1999-02-26 | Toshiba Corp | Mobile ip communication system and mobile ip communication method and router and terminal management server |
| JPH11275070A (en) * | 1998-03-19 | 1999-10-08 | Sony Corp | Connection device |
| JP2000083109A (en) * | 1998-07-07 | 2000-03-21 | Nakayo Telecommun Inc | Radio communication apparatus |
| JP3327226B2 (en) * | 1998-10-29 | 2002-09-24 | 三菱マテリアル株式会社 | Wireless server, terminal-server connection method, and recording medium therefor |
| JP2000242589A (en) * | 1999-02-25 | 2000-09-08 | Mitsubishi Electric Corp | Computer system for control of transfer of data |
| JP2001333126A (en) * | 2000-05-23 | 2001-11-30 | Ntt Docomo Inc | Communication system, communication method and communication unit |
| JP3519653B2 (en) * | 1999-12-03 | 2004-04-19 | 三菱電機株式会社 | Communication method, recording medium, communication system, and adapter |
-
2002
- 2002-03-25 JP JP2002084018A patent/JP3599717B2/en not_active Expired - Fee Related
-
2003
- 2003-03-25 TW TW92106672A patent/TW200306100A/en unknown
- 2003-03-25 CN CNB031360084A patent/CN1291557C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635816B (en) * | 2008-07-25 | 2011-06-15 | 索尼株式会社 | Signal processing apparatus, signal processing method, and program |
| CN101854429A (en) * | 2010-03-10 | 2010-10-06 | 深圳市同洲电子股份有限公司 | Control method of network connection and mobile communication terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1291557C (en) | 2006-12-20 |
| JP2003283525A (en) | 2003-10-03 |
| TW200306100A (en) | 2003-11-01 |
| JP3599717B2 (en) | 2004-12-08 |
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Granted publication date: 20061220 Termination date: 20100325 |