CN101150601B - Multi-user concurrent access system and method - Google Patents
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Abstract
The invention discloses a mulituser concurrent access system and a method thereof, the method comprises following steps: step S202, a terminal sends a request to an access server, alternating between the access server and the terminal, and establishing access between the access server and the terminal; step S204, when a user is accessed in an access concentrator, the access concentrator allocates a binding IP address to the user; and step S206, the user is communicated with Internet according to the binding IP address. By adopting the invention, a terminal which provides IP access service to mulituser in the IP access technology is realized, thereby providing data service to mulituser by a terminal simultaneously can be realized, a system for supporting mulituser concurrent access is provided.
Description
Technical field
The present invention relates to IP access technology, relate in particular to a kind of system and method for multi-user concurrent access.
Background technology
The developing direction of 3G mobile communication wishes mobile communication technology and IP technology to carry out ideally combination just, thus make people realize at any time and any place, by any media and dream that anyone communicates.In the CDMA2000 system as one of 3G system, also fully demonstrated such developing direction, it not only can provide to user the data access of the so-called simple IP based on traditional, has more introduced mobile IP technology.
CDMA is a kind of conventional taking wide-band spread spectrum technology as basic multiple access modulation technique.CDMA2000 is one of Main Patterns of 3G (Third Generation) Moblie, and it not only provides high-quality voice service, and packet data transmission service at a high speed is also provided simultaneously.Cdma system provides two kinds of access waies for user: simple IP and Mobile IP (Mobile IP, MIP).
Simple IP technology, in the time that user accesses, gives IP address of terminal distribution, can realize the packet data call of terminal as caller.It can provide the seamless roam ability under same PDSN (Packet Data Service Node: packet data serving node) to user.In the time that roaming out the PDSN serving, user need to re-establish new connection.
Mobile IP access technology, in the time that user accesses, gives IP address of terminal distribution, and in the time that terminal is roamed across PDSN, can keep this IP address constant.It can provide the seamless roam ability under same HA (Home Agent: home agent) to user, for user provides continuous data service.
In actual applications, a user uses a terminal, and each terminal provides the access service of simple IP or Mobile IP for user.In use, terminal can support that simple IP and Mobile IP can be concurrent, or can be a user in terminal multiple concurrent connections are provided simultaneously.
Above application is limited to a user and uses a terminal, if there are multiple users, but only has a terminal, and system can not provide multiple users' concurrent data service in this case.
That is, prior art can not provide a terminal simultaneously for multiple users provide the IP support of service, thereby causes a terminal to provide data, services for multiple users simultaneously, and therefore, prior art exists defect, needs to improve.
Therefore, need a kind of solution of multi-user concurrent access, can solve the problem in above-mentioned correlation technique.
Summary of the invention
The system and method that the object of the present invention is to provide multi-user concurrent access, a terminal can provide IP access service for multiple users simultaneously, provides data, services thereby realize a terminal for multiple users simultaneously.
According to an aspect of the present invention, provide a kind of system of multi-user concurrent access, this system comprises: terminal, is used to multiple users that data, services is provided; Access server, is connected with terminal, for terminal being accessed to Internet network; And access concentrator, for multiple users are connected to terminal, and undertaken alternately by terminal and access server, for multiple users provide concurrent IP access service, wherein, access concentrator is that the each user in multiple users binds a different IP address, and each user carries out communication by IP address and the Internet network of binding.
Terminal is connected with access server by wireless network or cable network.
Each in multiple users is connected with access concentrator by WLAN (wireless local area network).
Access concentrator and terminal are transmitted data by Ethernet.
Access server is the packet data serving node of cdma system, and terminal adopts the simple IP access way of cdma system to be connected with access server.
According to another aspect of the present invention, a kind of method that multi-user concurrent access is provided, comprises the following steps: step S202, and terminal sends access request to access server, access server and terminal are carried out alternately, and connect between terminal and access server; And step S204, in the time that user accesses access concentrator, access concentrator is binding IP address of user assignment; And step S206, user communicates according to binding IP address and Internet.
Step S204 comprises the following steps: access server is IP address field of terminal distribution; IP address field information is sent to access concentrator by terminal; And access concentrator selects an IP address in IP address field as the binding IP address of distributing to user.
Step S204 comprises the following steps: access concentrator and access server are mutual, and request access server is binding IP address of user assignment; Access server sends mobile IP login request to user's home agent, asks as binding IP address of user assignment; Home agent is binding IP address of user assignment, and responds mobile IP registration and reply to access server; And the binding IP address that access server is user assignment by home agent server is distributed to user.
Step S202 is further comprising the steps of: access concentrator is implicit IP address of user assignment, and implicit IP address is mutually corresponding with binding IP address.
Binding IP address obtains to user's ownership place authentication, mandate and accounting server request by access server, or obtains to Dynamic Host Configuration Protocol server request by access server.
In the time that user sends data, step S206 comprises the following steps: send data to access concentrator according to implicit IP address; Implicit IP address is converted to binding IP address by access concentrator, and access concentrator forwards the data to terminal according to binding IP address; And terminal forwards the data to Internet network by access server.
In the time sending data from Internet network to user, step S206 comprises the following steps: access server sends data to access concentrator according to binding IP address by terminal; Binding IP address is converted to implicit IP address by access concentrator, and forward the data to corresponding user according to implicit IP address.
Adopt the present invention in IP access technology, to realize a terminal and provide IP access service for multiple users simultaneously, provide data, services, the system of the multi-user concurrent that also provides support access thereby realize a terminal for multiple users simultaneously.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in write specification, claims and accompanying drawing.
Brief description of the drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structured flowchart illustrating according to the system of multi-user concurrent access of the present invention;
Fig. 2 is the flow chart illustrating according to the method for multi-user concurrent access of the present invention;
Fig. 3 is the method flow diagram illustrating according to the multi-user concurrent access of first embodiment of the invention;
Fig. 4 is the method flow diagram illustrating according to the multi-user concurrent access of second embodiment of the invention;
Fig. 5 illustrates according to the method for the multi-user concurrent access of the embodiment of the present invention the forward data flow diagram after user's access;
Fig. 6 illustrates according to the method for the multi-user concurrent access of the embodiment of the present invention the reverse data flow diagram after user's access;
Fig. 7 illustrates the flow chart of realizing multi-user concurrent access according to the method for the multi-user concurrent access of the embodiment of the present invention;
Fig. 8 illustrates the flow chart by concentrator IP address requesting according to the method access of the multi-user concurrent access of the embodiment of the present invention; And
Fig. 9 illustrates according to the method for the multi-user concurrent of the embodiment of the present invention flow chart that access server is initiated mobile IP login request in cdma system.
Embodiment
Describe embodiments of the invention in detail below in conjunction with accompanying drawing.
Fig. 1 is the structured flowchart illustrating according to the system of multi-user concurrent of the present invention.With reference to Fig. 1, comprise according to the system 100 of multi-user concurrent of the present invention: terminal 104, is used to multiple users that data, services is provided; Access server 106, is connected with terminal, for terminal being accessed to Internet network; And access concentrator 102, for multiple users are connected to terminal, and undertaken alternately by terminal and access server, for multiple users provide concurrent IP access service.
Terminal 104 is connected with access server by wireless network or cable network.
Each in multiple users is connected with access concentrator 102 by WLAN (wireless local area network).
Access concentrator 102 transmits data with terminal 104 by Ethernet.
The packet data serving node that access server 106 is cdma system, and terminal adopts the simple IP access way of cdma system to be connected with access server.
Fig. 2 is the flow chart illustrating according to the method for multi-user concurrent access of the present invention.With reference to Fig. 2, comprise the following steps according to the method for multi-user concurrent access of the present invention: step S202, terminal sends access request to access server, and access server and terminal are carried out alternately, and connect between terminal and access server; And step S204, in the time that user accesses access concentrator, access concentrator is binding IP address of user assignment; And step S206, user communicates according to binding IP address and Internet.
Step S204 comprises the following steps: access server is IP address field of terminal distribution; IP address field information is sent to access concentrator by terminal; And access concentrator selects an IP address in IP address field as the binding IP address of distributing to user.
Step S204 comprises the following steps: access concentrator and access server are mutual, and request access server is binding IP address of user assignment; Access server sends mobile IP login request to user's home agent, asks as binding IP address of user assignment; Home agent is binding IP address of user assignment, and responds mobile IP registration and reply to access server; And the binding IP address that access server is user assignment by home agent server is distributed to user.
Step S202 is further comprising the steps of: access concentrator is implicit IP address of user assignment, and implicit IP address is mutually corresponding with binding IP address.
Binding IP address obtains to user's ownership place authentication, mandate and accounting server request by access server, or obtains to Dynamic Host Configuration Protocol server request by access server.
In the time that user sends data, step S206 comprises the following steps: send data to access concentrator according to implicit IP address; Implicit IP address is converted to binding IP address by access concentrator, and access concentrator forwards the data to terminal according to binding IP address; And terminal forwards the data to Internet network by access server.
In the time sending data from Internet network to user, step S206 comprises the following steps: access server sends data to access concentrator according to binding IP address by terminal; Binding IP address is converted to implicit IP address by access concentrator, and forward the data to corresponding user according to implicit IP address.
Fig. 3 is the method flow diagram illustrating according to the multi-user concurrent of the embodiment of the present invention.With reference to Fig. 3, the method for the multi-user concurrent access of the present embodiment comprises the following steps:
Step S302, terminal proposes access request to access server, and connects;
Step S304, in the time that access concentrator has detected that user accesses, for user binds an IP address;
Step S306, in the time that user need to send datagram, first sends to access concentrator by data message; Data message forwarding is arrived terminal by access concentrator; Terminal is by the access server that sends datagram that is connected between terminal and access server; Data message forwarding is arrived Internet network by access server; And
Step S308, when there being data message to mail to user, access server is collected these data messages, by being connected between terminal and access server data message being sent to terminal; Terminal forwarding data packets is to access concentrator; Access concentrator forwarding data packets is given corresponding user,
In step S302, access server is IP address of terminal distribution;
In step S302, the IP address that access server is terminal distribution is the initial address of an address field, as 10.10.1.0; This address segment information is sent to access concentrator by terminal; Wherein, in step S304, access concentrator is that the IP address that user binds is that described access server is an address in the address field of described terminal distribution, as 10.10.1.1, or 10.10.1.2 etc.
In step S302, the IP address that access server is described terminal distribution is to obtain to user's ownership place authentication, mandate and accounting server request by described access server;
In step S302, the IP address that access server is described terminal distribution obtains to Dynamic Host Configuration Protocol server request by described access server;
In step S302, terminal is in the time of request access, and with a fixing IP address, access server is determined this IP address;
In step S304, access concentrator, for user binds before an IP address, for user asks an IP address, specifically comprises:
Access concentrator is mutual by DHCP (Dynamic Host Configuration Protocol, DHCP) message and described access server, and asking described access server is user assignment one IP address; Dhcp message transmits by Ethernet between described access concentrator and described terminal, between described terminal and described access server by the transmission that is connected between described terminal and described access server;
In step S304, in the time that described access server is received described DHCP request message, the IP address that described access server is user assignment is to obtain to user's ownership place authentication, mandate and accounting server request;
In step S304, in the time that described access server is received described DHCP request message, the IP address that described access server is user assignment obtains to Dynamic Host Configuration Protocol server request;
In step S304, in the time that described access server is received described DHCP request message, described access server is that user assignment IP address specifically comprises: in the time that described access server is received described DHCP request message, representative of consumer sends the home agent of mobile IP login request to user, the binding of request user Mobile IP; Home agent is user assignment one IP address, and responds mobile IP registration and reply to access server;
In step S304, the IP address that home agent is user assignment is to obtain to user's ownership place authentication, mandate and accounting server request by home agent.
In step S304, the IP address that home agent is user assignment obtains to Dynamic Host Configuration Protocol server request by home agent.
In step S304, access concentrator, in the time detecting that user accesses, is implicit IP address of user assignment; In the time that user carries out data transmit-receive, access concentrator is that user carries out the conversion between binding IP address and implicit IP address.
In the method, the packet data serving node that access server is cdma system, terminal adopts simple IP connected mode and the described access server of cdma system to connect.
Fig. 4 is the method flow diagram illustrating according to the multi-user concurrent of second embodiment of the invention.In this embodiment, adopt system as shown in Figure 1, this system comprises: access concentrator 102, terminal 104, access server, Foreign Agent and home agent 108, wherein, access server, Foreign Agent can adopt and be wholely set to realize, i.e. access server/Foreign Agent 106.Between terminal 104 and access server 106, connect, user collects by access concentrator 102.Access concentrator 102 is mutual by terminal 104 and access server 106, for multiple users provide concurrent IP access service simultaneously.The binding that user can set up Mobile IP by access server 106 and home agent 108.
Specifically, access concentrator 102 collects user's access, and in the time that user asks to access, for user binds an IP address, user carries out communication by this IP address and Internet net; Wherein, between described access concentrator 102 and described terminal 104, can adopt Ethernet to carry out transfer of data;
First and being connected of setting up between access server terminal 104, provides carrying at the upper data message for multiple users of this connection; Described terminal 104 can be connected with described access server by wireless network or cable network;
Access server/Foreign Agent 106, for terminal provides access, is set up the connection of terminal access; Wherein, described access server can be the packet data serving node of cdma system, and now, described terminal adopts simple IP connected mode and the described access server of cdma system to connect.On this connects, in the time that access server asks Mobile IP to be bound for user, bear the function of Foreign Agent, realize alternately the binding of user's Mobile IP with home agent;
Home agent 108, for user provides the binding of Mobile IP, coordinates with Foreign Agent, and the data, services of Mobile IP is provided for user jointly.
As shown in Figure 4, the present embodiment provides a kind of method of multi-user concurrent access, terminal and access server connect, access concentrator in the time that user accesses for user binds an IP address, user collects by access concentrator, data message adopts the carrying that is connected of terminal and access server between terminal and access server, and the method comprises the following steps:
Step S402, terminal proposes access request to access server, and connects;
Step S404, in the time that access concentrator has detected that user accesses, for user binds an IP address;
Step S406, in the time that user need to send datagram, first sends to access concentrator by data message; Data message forwarding is arrived terminal by access concentrator; Terminal is by the access server that sends datagram that is connected between terminal and access server; Data message forwarding is arrived Internet network by access server;
Step S408, when there being data message to mail to user, access server is collected these data messages, by being connected between terminal and access server data message being sent to terminal; Terminal forwarding data packets is to access concentrator; Access concentrator forwarding data packets is given corresponding user.
At step S402, when terminal and described access server connect, access server is given IP address of described terminal distribution.
At step S402, it is the initial address of an address field that described access server is given the IP address of described terminal distribution, as 10.10.1.0; This address segment information is sent to described access concentrator by described terminal; Described step 404 further comprises, described access concentrator is that IP address that user binds is that described access server is an address in the address field of described terminal distribution, as 10.10.1.1, or 10.10.1.2 etc.;
At step S402, terminal is in the time of request access, and with a fixing IP address, as 172.169.1.1, access server is determined this IP address;
At step S404, described access concentrator, for user binds before an IP address, for user asks an IP address, specifically comprises:
Described access concentrator is mutual by dhcp message and described access server, and asking described access server is user assignment one IP address; Dhcp message transmits by Ethernet between described access concentrator and described terminal, between described terminal and described access server by the transmission that is connected between described terminal and described access server,
In step S404, in the time that described access server is received described DHCP request message, described access server is that user assignment IP address specifically comprises:
In the time that described access server is received described DHCP request message, representative of consumer sends the home agent of mobile IP login request to user, the binding of request user Mobile IP; Described home agent is IP address of user assignment, and responds mobile IP registration and reply to described access server;
In step S404, described access concentrator, in the time detecting that user accesses, can be implicit IP address of user assignment, for example, and 192.168.1.1,192.168.1.2 etc.; Like this, for access concentrator, this user is identified specific user.In practical application, user carries out data communication by IP address and the Internet net of binding, described access concentrator operates for user carries out can carrying out NAT (Network Address Transfer, network address translation) between binding IP address and implicit IP address.
In above step, the packet data serving node (Packet Data Server Node:PDSN) that described access server is cdma system; In step 402, what described terminal was set up with described access server is connected to being connected of cdma system simple IP.
System and method provided by the invention, makes system by a terminal for multiple users provide IP access service simultaneously, provide solution for multiple users carry out concurrent data service by a terminal.
Specifically, in the present embodiment, between access concentrator and access server, mutual information between terminal and access server is being the carrying that is connected of setting up between by terminal and access server.In cdma system, the carrying between terminal and access server can be the connection of PPP (Point to Point Protocol, point-to-point protocol), and user's data are to be carried in PPP connection.
When behind the user bound IP of success address, the forward direction reverse data message transmissions of user data service as shown in Figure 5, Figure 6.In Fig. 5 and Fig. 6, with access concentrator in the time that user accesses to implicit IP address of user assignment, for user binds an IP address; In the time that carrying out data service, user concentrate concentrator to carry out the transmission that is converted to example and illustrates user datagram literary composition of address by NAT.As shown in Figure 5 and Figure 6, the implicit IP address of supposing user 1 is 192.168.1.1, and the IP address of user's binding is 10.0.0.1; User 2 implicit IP address is 192.168.1.2, and the IP address of user's binding is 10.0.0.2.In the time that user 3 is linked into, its implicit IP address can be 192.168.1.3, and the IP address of binding can be 10.0.0.3; When accessing, more user by that analogy, repeats no more.
Fig. 5 is that the present invention realizes the reverse data flow graph after access user.First, user's access concentrator that sends datagram, access concentrator is by the conversion of NAT, the source address of user's message is converted to the IP address 10.0.0.1 of binding from implicit IP address 192.168.1.1, send to terminal by Ethernet, terminal is carried on terminal by user's data message and sends to access server with being connected of access server; Access server directly sends to Internet net by user's data message.If access server carries out mobile IP registration for user, user's data message also can first send to home agent, by home agent, user's data message is sent to Internet net.Thus, realize the transmission of user's forward data message.
Fig. 6 is that the present invention realizes the forward data flow graph after access user.First, access server is intercepted and captured the data message of issuing user, or in the situation that Mobile IP is bound, the data message that user is issued in home agent intercepting and capturing is transmitted to access server by MIP tunnel, and then access server is carried on terminal by data message and sends to terminal with being connected of access server; Terminal message receives after message, forwards user's message to access concentrator, and access concentrator, by the conversion of NAT, is converted to implicit IP address 192.168.1.1 by the Mobile IP destination address 10.0.0.1 of user's message, sends to corresponding user.
The method accessing as example explanation multi-user concurrent taking two user concurrent accesses of cdma system below.In cdma system, access server is PDSN, the terminal that terminal is CDMA, but the PPP that is connected setting up between terminal and PDSN connect, can be also that non-PPP connects, following examples are connected to example explanation with the PPP that is connected to setting up between terminal and PDSN.
Fig. 7 realizes the flow chart of multi-user concurrent access according to the method for the multi-user concurrent of the embodiment of the present invention.In this embodiment, first terminal is set up PPP with PDSN and is connected, and connects in process of establishing at PPP, and access server is IP address of terminal distribution, and this address is the initial address of an address field.The information of this address field, by terminal notice access concentrator.Access concentrator is in the time that user accesses, for user binds an address in this address field.After this, user uses IP address and the Internet of this binding to communicate, and the method for this embodiment comprises the following steps:
Step S702, terminal is set up PPP with PDSN and is connected, and PDSN is IP address of terminal distribution, as 10.10.1.0;
Step S704, terminal is by the address field information notice access concentrator distributing;
Step S706, user 1 initiates request to access concentrator, and request is linked into Internet network; Access concentrator is bound an IP address for user 1, as 10.10.1.1; Access concentrator distributes an implicit IP address for user 1, as 192.168.1.1;
Step S708, user 1 data are transmitted; The data message that wherein mails to user 1 is collected by access server, be connected and send to terminal by the PPP between terminal and access server, terminal by data message forwarding to access concentrator, access concentrator again by data message forwarding to user 1; The data message that user 1 is sent, first data message is dealt into access concentrator by user 1, access concentrator arrives terminal by data message forwarding again, terminal is connected and is sent to access server by the PPP between terminal and access server, and data message forwarding is arrived Internet net by access server; Data message between user 1 and access concentrator adopts user 1 home address 192.168.1.1, and between access concentrator and access server, user 1 data message adopts the IP address 10.10.1.1 that access server distributes;
Step S710, user 2 initiates request to access concentrator, and request is linked into Internet network; Access concentrator is bound an IP address for user 2, as 10.10.1.2; Access concentrator distributes an implicit IP address for user 2, as 192.168.1.2;
Step S712, user 2 data are transmitted; The data message that wherein mails to user 2 is collected by access server, be connected and send to terminal by the PPP between terminal and access server, terminal by data message forwarding to access concentrator, access concentrator again by data message forwarding to user 2; The data message that user 2 is sent, first data message is dealt into access concentrator by user 2, access concentrator arrives terminal by data message forwarding again, terminal is connected and is sent to access server by the PPP between terminal and access server, and data message forwarding is arrived Internet net by access server; Data message between user 2 and access concentrator adopts user 2 home address 192.168.1.2, and between access concentrator and access server, user 2 data message adopts the IP address 10.10.1.2 that access server distributes.
Fig. 8 is the flow chart by concentrator IP address requesting according to the method access of the multi-user concurrent of the embodiment of the present invention.In this embodiment, first terminal is set up PPP with PDSN and is connected, and connects in process of establishing at PPP, access server is IP address of terminal distribution, in the time that user asks to access, access concentrator is to IP address of access server request, and the method for this embodiment comprises the following steps:
Step S802, terminal is set up PPP with PDSN and is connected, and PDSN is IP address of terminal distribution, as 10.10.1.1;
Step S804, user 1 initiates request to access concentrator, and request is linked into Internet network; Access concentrator distributes an implicit IP address for user 1, as 192.168.2.1;
Step S806, access concentrator is that user 1 initiates IP Address requests to access server, access server is user 1 distributing IP address, as 10.10.2.1; Access concentrator is user's 1 binding IP address, as 10.10.2.1;
Step S808, user 1 data are transmitted; The data message that wherein mails to user 1 is collected by access server, be connected and send to terminal by the PPP between terminal and access server, terminal by data message forwarding to access concentrator, access concentrator again by data message forwarding to user 1; The data message that user 1 is sent, first data message is dealt into access concentrator by user 1, access concentrator arrives terminal by data message forwarding again, terminal is connected and is sent to access server by the PPP between terminal and access server, and data message forwarding is arrived Internet net by access server; Data message between user 1 and access concentrator adopts user 1 home address 192.168.2.1, and between access concentrator and access server, user 1 data message adopts the IP address 10.10.2.1 that access server distributes;
Step S810, user 2 initiates request to access concentrator, and request is linked into Internet network; Access concentrator distributes an implicit IP address for user 2, as 192.168.2.2;
Step S812, access concentrator is that user 2 initiates IP Address requests to access server, access server is user 2 distributing IP addresses, as 10.10.2.2; Access concentrator is user's 2 binding IP address, as 10.10.2.2;
Step S814, user 2 data are transmitted; The data message that wherein mails to user 2 is collected by access server, be connected and send to terminal by the PPP between terminal and access server, terminal by data message forwarding to access concentrator, access concentrator again by data message forwarding to user 2; The data message that user 2 is sent, first data message is dealt into access concentrator by user 2, access concentrator arrives terminal by data message forwarding again, terminal is connected and is sent to access server by the PPP between terminal and access server, and data message forwarding is arrived Internet net by access server; Data message between user 2 and access concentrator adopts user 2 home address 192.168.2.2, and between access concentrator and access server, user 2 data message adopts the IP address 10.10.2.2 that access server distributes.
Wherein, in step S806 and step S812, access concentrator is user's IP address requesting to access server, can adopt the mode of DHCP.
Wherein, in step S806 and step S812, access server is that user assignment IP address can adopt to Dynamic Host Configuration Protocol server request acquisition, or obtains to user's ownership place authentication, mandate and accounting server request.
In like manner, in step S802, the IP address that access server is terminal distribution can adopt to Dynamic Host Configuration Protocol server request and obtain, or obtains to user's ownership place authentication, mandate and accounting server request.
Fig. 9 is according to the method for the multi-user concurrent of the embodiment of the present invention flow chart that access server is initiated mobile IP login request in cdma system.In this embodiment, access server and foreign agent FA unification realize.First terminal is set up PPP with PDSN and is connected, and connects in process of establishing at PPP, and access server is IP address of terminal distribution.In the time that user initiates connection request, access server representative of consumer is initiated MIP login request message to home agent HA, asks as IP address of user assignment, and the registration request flow process in this embodiment comprises the following steps:
Step S902, terminal is set up PPP with PDSN and is connected, and PDSN is IP address of terminal distribution, as 10.10.1.1;
Step S904, user 1 initiates request to access concentrator, and request is linked into Internet network; Access concentrator distributes an implicit IP address for user 1, as 192.168.3.1;
Step S906, access concentrator is that user 1 initiates IP Address requests to access server;
Step S908, access server representative of consumer 1 is initiated MIP login request message 1 to home agent;
Step S910, home agent is user 1 distributing IP address, as 10.10.3.1, responds access server with MIP registration reply message 1;
Step S912, the IP Address requests of access concentrator response access concentrator, is that the IP address 10.10.3.1 that user 1 distributes sends access concentrator to by home agent; Access concentrator is bound 10.10.3.1 and user 1;
Step S914, user 1 data are transmitted; The data message that wherein mails to user 1 is collected and is sent to access server by home agent, be connected and send to terminal by the PPP between terminal and access server, terminal by data message forwarding to access concentrator, access concentrator again by data message forwarding to user 1; The data message that user 1 is sent, first data message is dealt into access concentrator by user 1, access concentrator arrives terminal by data message forwarding again, terminal is connected and is sent to access server by the PPP between terminal and access server, data message is directly forwarded to Internet net by access server, or access server first mails to home agent by data message by MIP tunnel, by home agent, data message is sent with Internet; Data message between user 1 and access concentrator adopts user 1 home address 192.168.3.1, and between access concentrator and access server/home agent, user 1 data message adopts the IP address 10.10.3.1 that home agent distributes;
Step S916, user 2 initiates request to access concentrator, and request is linked into Internet network; Access concentrator distributes an implicit IP address for user 2, as 192.168.3.2;
Step S918, access concentrator is that user 2 initiates IP Address requests to access server;
Step S920, access server representative of consumer 2 is initiated MIP login request message 2 to home agent;
Step S922, home agent is user 2 distributing IP addresses, as 10.10.3.2, responds access server with MIP registration reply message 2;
Step S924, the IP Address requests of access concentrator response access concentrator, is that the IP address 10.10.3.2 that user 2 distributes sends access concentrator to by home agent; Access concentrator is bound 10.10.3.2 and user 2;
Step S926, user 2 data are transmitted; The data message that wherein mails to user 2 is collected and is sent to access server by home agent, be connected and send to terminal by the PPP between terminal and access server, terminal by data message forwarding to access concentrator, access concentrator again by data message forwarding to user 2; The data message that user 2 is sent, first data message is dealt into access concentrator by user 2, access concentrator arrives terminal by data message forwarding again, terminal is connected and is sent to access server by the PPP between terminal and access server, data message is directly forwarded to Internet net by access server, or access server first mails to home agent by data message by MIP tunnel, by home agent, data message is sent with Internet; Data message between user 2 and access concentrator adopts user 2 home address 192.168.3.2, and between access concentrator and access server/home agent, user 2 data message adopts the IP address 10.10.3.2 that home agent distributes.
Further, the IP address that in step S910 and step S922, home agent is user assignment is to obtain to user's ownership place authentication, mandate and accounting server request, or obtains to Dynamic Host Configuration Protocol server request.
In the present embodiment, the access of a terminal realizes multiple users' concurrent access, because access server representative of consumer is initiated the binding of Mobile IP, user is spanned into the switching of server, can ensure the connectivity of user data service.
Adopt said system and method, can, by a terminal for multiple users provide IP access service simultaneously, realize multiple users and carry out concurrent data service by a terminal.In actual use, user can adopt WLAN (Wireless Local Access Network, wireless local Access Network) mode be connected to access concentrator, access concentrator can be AP (Access Point, the access point) equipment in wlan network.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (12)
1. a system for multi-user concurrent access, is characterized in that, comprising:
Terminal, is used to multiple users that data, services is provided;
Access server, is connected with described terminal, for described terminal is accessed to Internet network; And
Access concentrator, for described multiple users are connected to described terminal, and undertaken alternately by described terminal and described access server, for described multiple users provide concurrent IP access service, wherein, described access concentrator is that the each user in described multiple user binds a different IP address, and described each user carries out communication by described IP address and the Internet network of binding;
Wherein, described access concentrator is implicit IP address of described user assignment, and described implicit IP address is mutually corresponding with described binding IP address;
Wherein, before user's access, described terminal and described access server connect.
2. system according to claim 1, is characterized in that, described terminal is connected with described access server by wireless network or cable network.
3. system according to claim 1, is characterized in that, each in described multiple users is connected with described access concentrator by WLAN (wireless local area network).
4. system according to claim 3, is characterized in that, described access concentrator and described terminal are transmitted data by Ethernet.
5. according to system in any one of the preceding claims wherein, it is characterized in that, the packet data serving node that described access server is cdma system, and described terminal adopts the simple IP access way of described cdma system to be connected with described access server.
6. a method for multi-user concurrent access, is characterized in that, comprises the following steps:
Step S202, terminal sends access request to access server, and described access server and described terminal are carried out alternately, and connect between described terminal and described access server; And
Step S204, in the time that user accesses described access concentrator, described access concentrator is binding IP address of described user assignment; And
Step S206, described user communicates according to described binding IP address and Internet;
Wherein, described step S202 is further comprising the steps of: described access concentrator is implicit IP address of described user assignment, and described implicit IP address is mutually corresponding with described binding IP address.
7. method according to claim 6, is characterized in that, described step S204 comprises the following steps:
Described access server is IP address field of described terminal distribution;
Described IP address field information is sent to described access concentrator by described terminal; And
Described access concentrator selects an IP address in described IP address field as the described binding IP address of distributing to described user.
8. method according to claim 6, is characterized in that, described step S204 comprises the following steps:
Described access concentrator and described access server are mutual, and asking described access server is binding IP address of described user assignment;
Described access server sends mobile IP login request to described user's home agent, asks as binding IP address of described user assignment;
Described home agent is binding IP address of described user assignment, and responds mobile IP registration and reply to described access server; And
The described binding IP address that described access server is described user assignment by described home agent is distributed to described user.
9. method according to claim 6, is characterized in that, described binding IP address obtains to described user's ownership place authentication, mandate and accounting server request by described access server.
10. method according to claim 6, is characterized in that, described binding IP address obtains to Dynamic Host Configuration Protocol server request by described access server.
11. methods according to claim 6, is characterized in that, in the time that user sends data, described step S206 comprises the following steps:
According to described implicit IP address, described data are sent to described access concentrator;
Described implicit IP address is converted to described binding IP address by described access concentrator, and described access concentrator according to described binding IP address by described data retransmission to described terminal; And
Described terminal by described access server by described data retransmission to Internet network.
12. methods according to claim 6, is characterized in that, in the time sending data from described Internet network to user, described step S206 comprises the following steps:
Described access server is sent to described access concentrator by described terminal by described data according to described binding IP address;
Described binding IP address is converted to described implicit IP address by described access concentrator, and according to described implicit IP address by described data retransmission to corresponding user.
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| CN101150764B (en) * | 2007-10-18 | 2011-04-20 | 中兴通讯股份有限公司 | A system and method for realizing multi-user data concurrent service |
| CN102238505B (en) * | 2010-05-04 | 2014-10-22 | 中兴通讯股份有限公司 | Method and system for processing multi-user parallel signalling tracking at client |
| CN108566404B (en) * | 2018-01-04 | 2021-05-18 | 国网信息通信产业集团有限公司 | A kind of remote communication method and device |
| CN110430117B (en) * | 2019-08-13 | 2020-05-19 | 广州竞远安全技术股份有限公司 | High-concurrency tunnel system and method for connecting cloud network and user intranet |
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