CN100358391C - Method for accessing mobile station for general packet wireless business and domain name server - Google Patents
Method for accessing mobile station for general packet wireless business and domain name server Download PDFInfo
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- CN100358391C CN100358391C CNB2004100742417A CN200410074241A CN100358391C CN 100358391 C CN100358391 C CN 100358391C CN B2004100742417 A CNB2004100742417 A CN B2004100742417A CN 200410074241 A CN200410074241 A CN 200410074241A CN 100358391 C CN100358391 C CN 100358391C
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Abstract
The present invention discloses a method for accessing mobile stations in the general packet wireless service, which comprises: the corresponding relation of the user identification and the IP addresses of the mobile stations is configured in a domain name server of a general packet wireless communication network; a node in the communication network sends the user identification of a mobile station to be accessed to the domain name server; the domain name server resolves the user identification into an IP address according to the corresponding relation, and sends the IP address to the node; the node communicates with the mobile station according to the resolved IP address. The present invention makes the access to the mobile station from a network user more convenient. The present invention also discloses a domain name server for realizing the method.
Description
Technical field
The present invention relates to the GPRS in wireless mobile communications field, the methods and applications that relate in particular to visit travelling carriage in GPRS are in the name server of this method.
Background technology
At present, the problem that attracts people's attention most in the moving communicating field is how to evolve to 3G network from the 2G network.In the 2G network, the business more than 90% is speech and value-added service; 3G network designs for multimedia communication, main bearing multimedia business, and voice service is its subservice.Based on GSM (GlobeSystem for Mobile Communications, gsm) GPRS (General Packet Radio Service, the GPRS) scheme of system's proposition possesses technical forward and backward compatibility.GPRS allows the mobile subscriber to transmit and receive data with packet mode, rather than with traditional circuit exchange mode, thus provide a kind of efficiently, wireless packet data service cheaply.
Seeing also Fig. 1, is the schematic diagram of GPRS communication network.
Land radio access web (UTRAN, UTMS Terrestrial Radio Access Network)/base station sub-system (BSS, Base Station System) 110 is corresponding to the wireless access part in the 3G/2G network.Serving GPRS Support Node (SGSN, Serving GPRS Support Node) 120 and Gateway GPRS Support Node (GGSN, Gateway GPRS Support Node) the 130th, the functional node among the CN (core network); The major function of SGSN 120 provides the functions such as routing forwarding, mobile management, session management, authentication and encryption of packet-switched domain; GGSN 130 provides route and the encapsulation of packet between WCDMA (Wideband Code Division Multiple Access (WCDMA)) mobile network and external data network.Interface between GGSN 130 and the packet data switched network (PDN, Packet Data Network) 140 is Gi interface (figure does not show).
In the GPRS communication network, after travelling carriage (MS, Mobile Station) is successfully initiated PDP (PacketData Protocol, packet data protocol) activation process, this travelling carriage will obtain pdp address, and most applications is the IP address at present.Subsequently, travelling carriage will utilize the node in this IP address and the communication network to communicate, as a main frame that belongs to PDN, can with other main-machine communications in the PDN.Provide a kind of example among Fig. 1, promptly travelling carriage 1 all is linked into identical PDN with travelling carriage 2, then can communicate based on IP address interconnect separately between travelling carriage 1 and the travelling carriage 2.
With travelling carriage 1 visit travelling carriage 2 is example, and in the method for the visit travelling carriage of prior art, because the IP address that the request that travelling carriage 1 sends need be carried travelling carriage 2, so this IP address must be understood in advance and is input in the travelling carriage 1 by the mobile subscriber.Be appreciated that for other nodes of PDN the inside also can visit this MS by the IP address of MS as main frame, the user of this main frame also must understand the IP address of this travelling carriage 2 in advance and be input in the main frame, could visit travelling carriage 2 in PDN.
But, for most users, what identify travelling carriage is MSISDN (Mobile StationInternational ISDN Number, international mobile subscriber number), the phone number that promptly is commonly called as, and the public has also got used to using MSISDN and cellphone subscriber to get in touch.Simultaneously, the IP address is difficult to memory, and it is very inconvenient to make like this by PDN visit MS, thereby influences the extensive use of gprs service greatly.
In view of this, in gprs service, need provide the method and the corresponding apparatus that visit travelling carriage according to MSISDN or other user ID.
Summary of the invention
The technical problem that the present invention solves is to provide the method for visit travelling carriage in a kind of GPRS and is used for the name server of this method, makes other nodes in the communication network can realize the visit to travelling carriage easily.
For addressing the above problem, the technical solution used in the present invention is: the method for visit travelling carriage in a kind of GPRS is provided, comprises step:
A) the access request of gateway Zhi Chijie receiving mobile initiation, and to remote access dial-in customer server transmission authentication request;
Name server obtains user ID and the corresponding IP address in the described authentication request, sets up the corresponding relation of described user ID and IP address;
B) node in the communication network sends the user ID of the travelling carriage of desire visit to name server;
C) name server is corresponding IP address according to aforementioned corresponding relation with described user identity resolution, and this IP address is sent to described node;
D) described node communicates according to the IP address and the described travelling carriage that receive.
Preferably,
Resolving in the described step c) is specially:
C1) described user ID is decomposed into corresponding domain name;
C2) corresponding relation of inquiry domain name and Ip address, the IP address that obtains coupling.
Preferably, also comprise before the described step a): the level that each name server is set is center name server or gateway name server, and center name server and gateway name server form distributed frame; Set the analytical range of gateway name server; Described step c1) and c2) also comprise: the analytical range at inquiry domain name place if domain name belongs to the analytical range of this gateway, parses the IP address of this domain name and responds the node of giving inquiry; If domain name does not belong to the analytical range of this gateway, according to the indication of center domain name, other domain names server parses that send to corresponding analytical range go out the IP address of this domain name correspondence; And the IP address that parses is sent to described node.
Preferably, described user ID is the international mobile subscriber number, and the level of described definite name server comprises: according to national code the center name server is set; According to the Service Dialing Numbers section first order gateway name server is set; According to operator's intercom number section second level name server is set.
Preferably, described IP address is a static ip address.
Preferably, described user ID is Subscriber Identity Module sequence number, the user's name of travelling carriage Electronic Serial Number, travelling carriage.
The present invention also provides a kind of name server that is used to realize the described method of claim 1, comprises acquiring unit, memory cell, segmenting unit and resolution unit; Described acquiring unit is used for obtaining the user ID of authentication request travelling carriage and corresponding IP address from remote access dial-in customer server, sets up the corresponding relation of described user ID and IP address; Described memory cell is used to store the user ID of described acquiring unit foundation and the corresponding relation of IP address; The user ID that described segmenting unit is used for the travelling carriage that will receive is converted to corresponding domain name; Described resolution unit connects memory cell and segmenting unit, is used for inquiring about aforementioned corresponding relation according to domain name, obtains the IP address of coupling.
Preferably, also comprise the judging unit that connects resolution unit, be used to judge whether domain name is positioned at the analytical range of this name server.
Preferably, described segmenting unit and resolution unit integrate.
With respect to prior art, the invention has the beneficial effects as follows: because the present invention disposes the user ID of the travelling carriage that is positioned at name server and the corresponding relation of IP address in communication network; In GPRS, when network node need be visited travelling carriage, only need send the user ID of the travelling carriage of desire visit to name server; Automatically obtain the IP address that obtains corresponding to this user ID by name server, thereby realize the convenient access of network node travelling carriage.And, for the mobile subscriber, visit does not need to understand the other side's IP address during other mobile subscribers (the IP address can be longer after especially using IPv6 in GPRS, be inconvenient to more remember), that is to say, the invention enables the user can directly use the other side's user ID, come transmission information as mobile subscriber number, the custom that more meets the user makes the popularization of GPRS lack obstacle, can promote the development of mobile communications network.
Description of drawings
Fig. 1 is the schematic diagram of a kind of GPRS communication network in the prior art;
Fig. 2 is the schematic diagram with GPRS communication network of name server of the present invention;
Fig. 3 is the flow chart of the method for visit travelling carriage in the GPRS of the present invention
Fig. 4 is another embodiment schematic diagram with GPRS communication network of name server of the present invention;
Fig. 5 is the structured flowchart of gateway name server shown in Figure 4;
Fig. 6 is another embodiment schematic diagram with name server GPRS communication network of the present invention.
Embodiment
Basic design of the present invention is to increase name server (DNS, DomainName Server) in packet data switched network, is used to dispose the user ID of travelling carriage and the corresponding relation of IP address.Thereby when network node visit travelling carriage, only need know the user ID of travelling carriage, and user ID is finished by name server automatically to the transfer process of IP address, to the mobile subscriber is transparent, thereby make the mobile subscriber need not remember each contact person's IP address, help applying of GPRS.
Seeing also Fig. 2, is the schematic diagram with name server GPRS communication network of the present invention.
Wherein, travelling carriage 1 is realized and being connected of packet data switched network 140 through land radio access web/base station sub-system 111, Serving GPRS Support Node 121 and Gateway GPRS Support Node 131; Travelling carriage 2 process land radio access web/base station sub-systems 112, Serving GPRS Support Node 122 and Gateway GPRS Support Node 132 realizations are connected with packet data switched network 140.Be provided with name server 150 in this packet data switched network 140.This name server 150 is used at the access process of network node to travelling carriage 1 or 2, and the user ID of the travelling carriage that the reception network node sends realizes the user ID of travelling carriage and the mutual conversion of IP address.
See also Fig. 3, introduce the flow process of the method for visit travelling carriage in the GPRS of the present invention below.
At first, on the name server 150 of general grouped wireless communication network, dispose the user ID of travelling carriage 1 and 2 and the corresponding relation of IP address.Described IP address is that travelling carriage 1 and 2 is successfully initiated the pdp address that obtains after the PDP activation process.
When network node visit travelling carriage 1 or 2, will send the user ID of the travelling carriage of desire visit to name server 150; Name server 150 is corresponding IP address according to aforementioned corresponding relation with described user identity resolution, and this IP address is sent to described network node; Then, described network node just can communicate according to IP address that receives and described travelling carriage.
For the ease of the understanding of the present invention, describe the present invention in detail below in conjunction with embodiment.In following embodiment, the domain name of supposing packet data switched network is abcpdn.net.The mutual visit between travelling carriage, other nodes in the network (as main frame etc.) can conduct interviews to travelling carriage.
Embodiment one
Please consult Fig. 2 once more, when the networking of packet data switched network 140 fairly simple, be that host number in the territory is not when being very big, single name server 150 can be set, at the host domain name of 150 li configuration travelling carriages 1 of name server and 2 and the IP address corresponding relation of travelling carriage in packet data switched network 140.
If packet data switched network 140 is company's nets, can adopt then that self-defining user name disposes the host domain name of travelling carriage 1 and 2 in the company on name server.Use travelling carriage 1, employee Y to use travelling carriage 2 to be example with employee X, then travelling carriage 1 can use x.abcpdn.net, and travelling carriage 2 can use y.abcpdn.net.
When employee X visits the travelling carriage 2 of employee Y with travelling carriage 1, travelling carriage 1 is initiated the PDP activation process by land radio access web/base station sub-system 111 and Serving GPRS Support Node 121, obtains the IP address of name server 150 from Gateway GPRS Support Node 131.Travelling carriage 1 sends the inquiry of the domain name request to name server 150, and request name server 150 resolves to corresponding IP address with y.abcpdn.net; Name server 150 is found the IP address of y.abcpdn.net and is sent to travelling carriage 1 in the domain name of this machine and IP address mapping table, and travelling carriage 1 just can send the IP messages to travelling carriage 2 by this IP address like this.
If packet data switched network 140 is networks of mobile service provider, then can adopt the domain name of international mobile subscriber number as travelling carriage.The international mobile subscriber number of supposing travelling carriage 1 is 8613812345678, and node in this packet data switched network 140 such as travelling carriage 2 just can use domain name ms8613812345678.abcpdn.net to visit travelling carriage 1 so.
When travelling carriage 2 was initiated the PDP activation process, Gateway GPRS Support Node 132 can be issued travelling carriage 2 with the IP address information of name server 150.When travelling carriage 2 visit ms8613812345678.abcpdn.net, at first travelling carriage 2 can send the inquiry of the domain name request to name server 150; Name server 150 resolves to the IP address of travelling carriage 1 with ms8613812345678.abcpdn.net, and sends to travelling carriage 2, and travelling carriage 2 just can send the IP message to travelling carriage 1 by this IP address like this.Whole process is transparent to the mobile subscriber.
Embodiment two
The communication network of communication network in the present embodiment and embodiment one is roughly the same, and difference is that embodiment two mainly is applicable to the situation of packet data switched network networking more complicated.
Main frame in travelling carriage and packet data switched network uses single name server can cause slower response speed more for a long time.Provide single packet data switched network to carry out communication end to end between all travelling carriages for all users such as operator, then single name server obviously can't meet the demands, and just needs to adopt distributed enquiring method this moment.
See also Fig. 4, in the packet data switched network 140, be provided with center name server 151 and gateway name server (GW-DNS) 152,153.Wherein, gateway name server 152 and 153 is positioned at same level, has different analytical ranges; Center name server 151 is positioned at the last layer level of gateway name server 152 and 153, forms distributed name server structure.
When certain the subordinate's name server that is arranged in distributed name server structure is received query requests, if the domain name of request inquiry does not belong to the analytical range of this machine, will be to the address that the name server of this scope of parsing is responsible in high level name server inquiry, after the answer of receiving higher level's name server, send the domain name mapping request to the name server of the corresponding analytical range of its indication.
Seeing also Fig. 5, is the structured flowchart of gateway name server shown in Figure 4.This gateway name server 152 comprises memory cell 521, segmenting unit 522 and resolution unit 523; Wherein, memory cell 521 is integrated in the resolution unit 523, and segmenting unit 521 links to each other with memory cell 521 with resolution unit 523.
The user ID that described segmenting unit 522 is used for the travelling carriage that will receive is converted to corresponding domain name, and sends to resolution unit 523.Wherein, domain name is to construct according to the user ID of travelling carriage.
Described resolution unit 523 is used for inquiring about according to domain name the corresponding relation of aforementioned user ID and IP address, obtains the IP address of coupling.
In addition, in order to accelerate response speed to the high domain name of some frequencies of utilization, the buffer (figure does not show) that is used for writing down nearest domain name of inquiring about and corresponding IP address can also be set in resolution unit 523, during domain name after resolution unit 523 is received decomposition, have or not corresponding record in can first query caching device, if having then can directly reply query node.
In addition, judging unit (figure do not show) can also be set in gateway name server 152, be used to judge whether the domain name after the decomposition belongs to the analytical range of this gateway name server; Certainly, described arbitration functions also can be integrated in the resolution unit 523.If the domain name after decomposing belongs to the analytical range of this gateway name server, then parse the IP address of this domain name and respond the node of giving the request inquiry by resolution unit 523; If the domain name after decomposing is not the analytical range of this gateway name server, domain name after then will decomposing is according to the indication of center name server 151, send to other gateway name servers of corresponding analytical range, parse the IP address of this domain name correspondence by this gateway name server.
Because present embodiment adopts distributed name server structure, even main frame in the packet data switched network 140 and travelling carriage are many again, user ID does not have problem on the performance to the domain name mapping of IP address yet.Segmentation to user ID will be carried out according to actual conditions, consider the factor such as performance, network connection of number of users, this gateway name server of this segment identification.
Need to prove that the gateway name server can be made of many data processing equipments, part is finished fragmentation feature, and part is finished analytical capabilities.
Be appreciated that the name server among the embodiment also can adopt the gateway name server.
When user ID adopts the international mobile subscriber number, the international mobile subscriber number can be decomposed, as ms8613812345678 is decomposed into ms5678.1234.138.86, the name server of different stage is set according to the decomposing scheme of international mobile subscriber number.For example worldwide highest level center name server can be according to CC (Country Code, national code) is provided with, the rank setting of following name server can be decided in its sole discretion according to actual conditions by each country: for example can second level name server (first order gateway name server) be set according to the Service Dialing Numbers section, by operator's intercom number section third level name server is set again, the quantity of name servers at different levels and the analytical range of each name server can be disposed by operator.
Please consult Fig. 4 once more, the international mobile subscriber number of supposing travelling carriage 1 in the communication network is 8613812345678, and the international mobile subscriber number of travelling carriage 2 is 8613911223344, and the international mobile subscriber number of travelling carriage 3 is 8613855667788; Gateway name server 152 is responsible for the domain name mapping of 86138 number segments, and gateway name server 153 is responsible for the domain name mapping of 86139 number segments, and other number segments are resolved by other gateway name servers; And the user who activates on the gateway GPRS node 131 uses gateway name server 152, and the user who activates on the gateway GPRS node 132 uses gateway name server 153 to carry out domain name mapping.
Travelling carriage 2 and travelling carriage 3 all activate on gateway GPRS node 132, and the domain name server information of acquisition is identical.When travelling carriage 3 visit travelling carriages 2, at first to gateway name server 1 53 nslookup ms8613911223344; Gateway name server 153 is decomposed into ms11223344.86139 with domain name earlier, the territory of additional again place packet data switched network, and then the domain name of travelling carriage 2 becomes ms11223344.86139.abcpdn.net.Because gateway name server 153 is responsible for the parsing in 86139.abcpdn.net territory just, therefore directly in the 153 inner inquiries of gateway name server, and return results gives travelling carriage 3, and travelling carriage 3 can send messages to travelling carriage 2 by the IP address of travelling carriage 2 afterwards.
When travelling carriage 3 visit travelling carriages 1, to gateway name server 153 nslookup ms8613812345678, gateway name server 153 is decomposed into ms12345678.86138 with domain name earlier, the territory of additional place packet data switched network, the domain name of travelling carriage 1 becomes ms12345678.86138.abcpdn.net, gateway name server 153 can at first inquire about whether the domain name of this main frame and the corresponding informance of its IP address are arranged in the buffer of this machine, if IP address from travelling carriage 1 to travelling carriage 3 that just directly return is arranged; If do not have, will be to the host domain name of gateway name server 152 request analysis travelling carriages 1, behind the analysis result of receiving gateway name server 152, gateway name server 153 can send the IP address of travelling carriage 1 to travelling carriage 3, preserves the domain-name information of travelling carriage 1 simultaneously in the buffer of this machine.Behind the IP address that obtains travelling carriage 1, travelling carriage 3 just can directly send message to travelling carriage 1.
In the reality, if necessary, MSISDN can also repeatedly split, and for example travelling carriage 1 can split into ms5678.1234.138.86.
Embodiment three
See also Fig. 6, if adopt nontransparent access way between travelling carriage and the network, for example adopt RADIUS (Remote Authentication Dial In User Serveice, the long-distance user dials in certificate server) authentication, then can adopt embodiment 3 to finish the configuration of corresponding relation.
To nontransparent APN (Access PointName, APN), when PDP activates, the gateway GPRS node can carry out operations such as authentication, charging to certificate server 160, owing to carried MSISDN information in the RADIUS authentication request, therefore certificate server 160 has obtained MSISDN and corresponding PDP IP address like this.Certificate server 160 is issued gateway DNS with MSISDN and IP address, so gateway DNS can generate the host domain name record automatically.
Need to prove that what travelling carriage used among the present invention is static ip address, all is satisfiable for this requirement of most of networkings.If packet data switched network adopts IPv6 (6, the 6 editions Internet Protocols of Internet Protocolversion) technology, because IPv6 has huge address space, the use static ip address will be without any problem.
Be appreciated that, the present invention not only can be applied in the GPRS based on GSM, and can be applied in the GPRS based on WCDMA (Wide Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)) network, this does not give unnecessary details.
The above only is a preferred implementation of the present invention, does not constitute the qualification to protection range of the present invention.Any any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection range of the present invention.
Claims (9)
1. the method for visit travelling carriage in the GPRS is characterized in that, comprises step:
A) the access request of gateway Zhi Chijie receiving mobile initiation, and to remote access dial-in customer server transmission authentication request;
Name server obtains user ID and the corresponding IP address in the described authentication request, sets up the corresponding relation of described user ID and IP address;
B) node in the communication network sends the user ID of the travelling carriage of desire visit to name server;
C) name server is corresponding IP address according to aforementioned corresponding relation with described user identity resolution, and this IP address is sent to described node;
D) described node communicates according to the IP address and the described travelling carriage that receive.
2. the method for visit travelling carriage is characterized in that in the GPRS according to claim 1,
Resolving in the described step c) is specially:
C1) described user ID is decomposed into corresponding domain name;
C2) corresponding relation of inquiry domain name and IP address, the IP address that obtains coupling.
3. the method for visit travelling carriage in the GPRS according to claim 2, it is characterized in that, also comprise before the described step a): the level that each name server is set is center name server or gateway name server, and center name server and gateway name server form distributed frame; Set the analytical range of gateway name server; Described step c1) and c2) also comprise: the analytical range at inquiry domain name place if domain name belongs to the analytical range of this gateway, parses the IP address of this domain name and responds the node of giving inquiry; If domain name does not belong to the analytical range of this gateway, according to the indication of center name server, other domain names server parses that send to corresponding analytical range go out the IP address of this domain name correspondence; And the IP address that parses is sent to described node.
4. the method for visit travelling carriage in the GPRS according to claim 3, it is characterized in that: described user ID is the international mobile subscriber number, and the level of described definite name server comprises: according to national code the center name server is set; According to the Service Dialing Numbers section first order gateway name server is set; According to operator's intercom number section second level name server is set.
5. according to the method for visit travelling carriage in each described GPRS of claim 1 to 4, it is characterized in that: described IP address is a static ip address.
6. according to the method for visit travelling carriage in each described GPRS of claim 1 to 3, it is characterized in that: described user ID is Subscriber Identity Module sequence number, the user's name of travelling carriage Electronic Serial Number, travelling carriage.
7. a name server that is used to realize the described method of claim 1 is characterized in that: comprise acquiring unit, memory cell, segmenting unit and resolution unit; Described acquiring unit is used for obtaining the user ID of authentication request travelling carriage and corresponding IP address from remote access dial-in customer server, sets up the corresponding relation of described user ID and IP address; Described memory cell is used to store the user ID of described acquiring unit foundation and the corresponding relation of IP address; The user ID that described segmenting unit is used for the travelling carriage that will receive is converted to corresponding domain name; Described resolution unit connects memory cell and segmenting unit, is used for inquiring about aforementioned corresponding relation according to domain name, obtains the IP address of coupling.
8. name server according to claim 7 is characterized in that: also comprise the judging unit that connects resolution unit, be used to judge whether domain name is positioned at the analytical range of this name server.
9. name server according to claim 7 is characterized in that: described segmenting unit and resolution unit integrate.
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| CN101127758B (en) * | 2006-08-16 | 2010-08-04 | 华为技术有限公司 | IP address acquisition method and acquisition system for mobile nodes |
| CN100502367C (en) | 2007-04-04 | 2009-06-17 | 华为技术有限公司 | Method and device for saving domain name system record |
| CN101335700B (en) * | 2007-06-25 | 2013-04-24 | 华为技术有限公司 | Address acquiring method, signaling routing method, communication system and related apparatus |
| CN102045407A (en) * | 2009-10-22 | 2011-05-04 | 中兴通讯股份有限公司 | Method and system for inquiring mapping relation and method for sending corresponding data message |
| CN103986795A (en) * | 2013-02-08 | 2014-08-13 | 王正伟 | Telephone number mapping method |
| CN104301294B (en) * | 2013-07-19 | 2017-11-21 | 中国移动通信集团广东有限公司 | A kind of response method, device and the network side equipment of DNS query request |
| CN109343497A (en) * | 2018-11-21 | 2019-02-15 | 杭州佳鹏电脑科技股份有限公司 | Data monitoring method and production management system |
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| CN1327339A (en) * | 2000-06-03 | 2001-12-19 | 三星电子株式会社 | Communication system and its method base on IP communication system between terminals |
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