CN100574503C - A kind of terminal and terminal switching method and system - Google Patents
A kind of terminal and terminal switching method and system Download PDFInfo
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- CN100574503C CN100574503C CNB2006100757089A CN200610075708A CN100574503C CN 100574503 C CN100574503 C CN 100574503C CN B2006100757089 A CNB2006100757089 A CN B2006100757089A CN 200610075708 A CN200610075708 A CN 200610075708A CN 100574503 C CN100574503 C CN 100574503C
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Abstract
The present invention relates to a kind of terminal and terminal switching method and system in WiMAX MIPv6.This method comprises: terminal identifies according to target BS, obtains the configuration information and the service Dynamic Host Configuration Protocol server of the corresponding target access service network gateway administration subnet of target BS sign to the service access service network gateway; Terminal is according to the configuration information of available Dynamic Host Configuration Protocol server information of obtaining from the service Dynamic Host Configuration Protocol server and described target access network gateway administration subnet, the Dynamic Host Configuration Protocol server of correspondence in the selected target network, Dynamic Host Configuration Protocol server corresponding in described objective network obtains target forward address and target forward address configuration information; Terminal is carried out switching according to described target forward address and target forward address configuration information.The present invention program solved at present switching flow WiMAX many kinds of addresses relevant information obtain manner fast single problem, be in the WiMAX system, to realize switching fast the precondition of creating.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of terminal and terminal switching method and system in WiMAX MIPv6.
Background technology
Although with Internet Protocol the 4th edition (IPv4 IP version 4) is that the internet of core technology has obtained great success, yet because the anxiety of IPv4 address resource has directly limited further developing that the IP technology is used.And the develop rapidly of mobile at present and broadband technology is to the demand sharp increase of IP address, though for satisfying technology such as inter-domain routing (CIDR Classless Inter Domain Routing) that this demand proposed no class, network address translation (NAT Net Address Translation), combined address, the anxiety that they can only respite IPv4 address.And internet engineer's task groups (IETF Internet EngineeringTask Force) has proposed the Next Generation Internet agreement in the nineties in 20th century---Internet Protocol sixth version (IPv6 IP version 6), IPv6 has been acknowledged as the following upgraded version of IPv4 at present.The IPv6 improvement of essence the most is that address size with former IPv4 is increased to 128 by 32, thereby has brought almost unlimited address space.In addition, IPv6 also adopts hierarchical address pattern, efficient IP packet header, service quality, host address to dispose automatically, authenticate and many technology such as encryption.
Wherein for realize mobile node still can be smoothly under situation of movement and the external world communicate, we use Mobile IP, i.e. mobile IP technology.As shown in Figure 1, Fig. 1 is a MIPv6 operation principle schematic diagram, as seen from the figure, the basic principle of mobile IP be mobile node except having a fixed ip address---HoA address (HoA Home Address), also have the another one temporary ip address at the field network that moves to recently---Care-of Address (CoA Care-of Address), set up the routing relation of corresponding relation and the home network and the field network of HoA address and CoA address by certain network mechanism, thus reach make mobile node when its network transformation with the Correspondent Node that is positioned at other networks (Corresponding Node) between unbroken purpose of communicating by letter.And mobile IP v 6 (MIPv6 Mobile IP version 6) is based on the mobile IP technology of IPv6 agreement, and it need not outer agency, support Route Optimization and then avoids alternate route and make full use of neighbours' discovery feature and the IPv6 extension header; The relative MIPv4 of the travelling performance of MIPv6 has had significant improvement.Come simply to introduce the working mechanism of MIPv6 below:
1, mobile node finds that by the IPv6 router message determines current position;
2, mobile node uses the configuration CoA address that the automatic configuration mechanism in IPv6 address is obtained foreign link;
3, mobile node lands to local agent, notifies its CoA address;
4, mobile node is also notified its CoA address to some CN;
5, other main frame can be ignored the CoA address of mobile node, and the moving IPv4 of image drift is the same, and bag is mail to the local network of mobile node, and local agent is forwarded to the Care-of Address of mobile node by tunnel Jiang Bao;
6, the communication host of knowing mobile node CoA also IP available v6 route extension header directly bag is issued mobile node;
7, mobile node uses the CoA address as the source address that sends bag.
For making the mobile node that is positioned at field network have one can effectively utilize the CoA address, just must make MS obtain its CoA address relevant information by certain collocation method; CoA address relevant information is divided into CoA address itself and CoA configuration information (as available DNS tabulation, NTP tabulation etc.).In MIPv6, the CoA address can obtain its relevant information by the mode of automatic configuration.Automatically the mode of configuration is divided into following two kinds:
Stateless disposes automatically: obtaining of the IP address of CoA, configuration information is that network prefix and interface identifier by receiving among the RouterAdvertisement combines.
There is state to dispose automatically: to obtain IP address, configuration information based on the DHCPv6 process.
WiMAX (Worldwide Interoperability for Microwave Access), i.e. the interoperability of global microwave system, the whole network of WiMAX is mainly by forming with the lower part:
1, client (MS, Mobile Subscriber Station): the user uses this devices accessing WiMAX network;
2, access service network (ASN Access Service Network): ASN is defined as the network function set that the WiMAX terminal provides the wireless access service.ASN has comprised base station (BS Base Station) and access service network gateway (ASN GW ASN Gateway) network element.Wherein the major function of BS network element is: provide the L2 of BS and MS to be connected, RRM etc.; The major function of ASN-GW network element is: for MS authentication function provides client functionality, provide for MS and switch in relaying (Relay) function (as IP address assignment), ASN of L3 information etc.
3, connect service network (CSN Connectivity Service Network): CSN is defined as the WiMAX terminal IP is provided Connection Service.The major function that CSN provided is: the IP address assignment of MS, Internet insert, authentication, authorization and accounting server (AAA server) or authentication, mandate, charging proxy server (AAA proxy), based on user's authorization control etc.
Above-mentioned three partial logic inter-entity communicate by the interface from R1 to R6, each network element and interface relationship as shown in Figure 2, Fig. 2 is the basic structure of WiMAX system.
When making MS be positioned at field network, it keeps not interrupting with communicating by letter of opposite end communication node (CN Correspondent Node), and we apply to the WiMAX system to reach above-mentioned target with the mobile IP v 6 technology here.Move to another ASN-GW and work as MS from an ASN-GW,, need switch fast for reducing or eliminating the delay that MS sets up new communication path.The purpose of switching is how to make MS send packet as early as possible after being connected to target ASN-GW (T-ASN-GW) fast, and how to send packet to it as early as possible after T-ASN-GW detects adhering to of MS.Comprise following several respects in order to reach quick switching of above-mentioned target:
1, move to detect: in advance or moving of finding early that MS takes place, and the T-ASN-GW that will move to;
2, IP address configuration: CoA address relevant information obtaining and disposing in new network;
3, the position is upgraded: the ASN-GW in T-CoA address and the objective network is registered, with the S-CoA of S-ASN-GW cancellation with its registration, and setting up getting in touch between T-CoA, S-CoA address and T-ASN-GW, the S-ASN-GW between two actions.
Can make MS detect the network that it has moved to T-ASN-GW and is administered rapidly by quick switching, simultaneously with situation that subnet that S-ASN-GW is administered is connected under, set up related with the new prefix information of subnet.Its key component is exactly the T-CoA that configures in service network in objective network, so that after being connected to T-ASN-GW, can use the T-COA and the external world to carry out communication immediately.
The mobile node that prior art is arranged in service network obtains flow process that the method in objective network T-CoA relevant information relates to (frame is the address configuration process) as shown in Figure 3:
S310, mobile node are found new access point (AP) and access point identity (AP ID) thereof by link layer mechanism, select the AP that may switch to simultaneously.
S320, mobile node send RtSolPr message to service couple in router (S-AR), wherein comprise target access sign (T-APID), ask its relevant information that issues corresponding target couple in router (T-AR) subnet of administering of target access sign (T-APID), as link layer address, link prefix etc.
S330, after S-AR receives this message, the relevant information of the pairing T-AR of T-APID administration subnet is carried in the PrRtAdv message sends to mobile node.
After S340, mobile node were received PrRtAdv message, the configuration information according to the T-AR administration subnet that is wherein comprised obtained oneself target forward address (T-CoA) relevant information in objective network, carries out the address and disposes automatically.
After if MS receives PrRtAdv in this step, the T-AP and the S-AP that find its selection are positioned under the same subnet, the AR that is to say both correspondences is identical, the link prefix of two perhaps corresponding AR administration subnets is identical, then obtaining of T-CoA relevant information need not be carried out, S-CoA can be continued to use.
S350, remaining switch step, little with content association that the present invention pays close attention to, just do not give unnecessary details here.
The process of T-CoA address configuration correspondence in the above-mentioned switching flow, only be applicable to that the mobile node that is arranged in service network utilizes stateless (Stateless) mode to obtain its quick switching in objective network T-CoA relevant information mode, that is to say that mobile node can carry out the address according to above-mentioned information and prepare automatically.And in the WiMAX system, also exist the mobile node need be according to having state (Stateful) mode and other modes to obtain its quick switching in objective network T-CoA relevant information mode, according to above-mentioned flow process, then can't make mobile node obtain relative address, for with quick switch application in the WiMAX system, need to obtain operating process related under the situation of T-CoA relevant information to providing by other modes.
Summary of the invention
The invention provides a kind of terminal and terminal switching method and system, be used for solving prior art and only be applicable to that the mobile node that is arranged in service network utilizes stateless (Stateless) mode to obtain its problem in the quick switching of objective network T-CoA relevant information mode.
The inventive method comprises:
A kind of terminal switching method comprises:
A, terminal identify according to target BS, obtain the configuration information and the service Dynamic Host Configuration Protocol server of the corresponding target access service network gateway administration subnet of target BS sign to the service access service network gateway;
B, terminal are administered the configuration information of subnet according to available Dynamic Host Configuration Protocol server information of obtaining from described service Dynamic Host Configuration Protocol server and described target access network gateway, the Dynamic Host Configuration Protocol server of correspondence in the selected target network, Dynamic Host Configuration Protocol server corresponding in described objective network obtains target forward address and target forward address configuration information;
C, terminal are carried out switching according to described target forward address and target forward address configuration information.
In the described steps A, the configuration information of the target access service network gateway administration subnet that described target BS sign is corresponding comprises that target BS identifies the link prefix information and/or the link layer information of corresponding target access service network gateway administration subnet.
Also comprise in the described steps A:
Terminal positioning service Dynamic Host Configuration Protocol server.
In the described steps A, the step of described terminal positioning service Dynamic Host Configuration Protocol server can be positioned at terminal and obtain before the step of link prefix information of the corresponding target access service network gateway administration subnet of target BS sign to the service access service network gateway, simultaneously or afterwards.
In the described steps A, described terminal positioning service Dynamic Host Configuration Protocol server further comprises:
Terminal sends DHCP Solicit message;
The service Dynamic Host Configuration Protocol server is responded DHCP Advertise message, in the described Advertise message, carries available Dynamic Host Configuration Protocol server information.
Among the described step B, Dynamic Host Configuration Protocol server corresponding in the terminal selected target network further comprises:
The information of the available Dynamic Host Configuration Protocol server that comprises in the DHCP Advertise message of terminal by the answer of service Dynamic Host Configuration Protocol server, compare the Dynamic Host Configuration Protocol server of correspondence in the selected target network with terminal to the information that the service access service network gateway obtains the available Dynamic Host Configuration Protocol server that obtains in the link prefix information process of the corresponding target access service network gateway administration subnet of target BS sign.
Described target forward address configuration information comprises one of following content or combination:
Available name server tabulation and network time server tabulation.
System of the present invention comprises:
A kind of terminal switching system is included as serving BS and service access service network gateway that terminal provides access, and terminal target BS and the target access service network gateway desiring to switch to, also comprises:
Link prefix information acquiring unit, be positioned at described terminal, be used for according to the target BS sign, obtain the link prefix information and the service Dynamic Host Configuration Protocol server of the corresponding target access service network gateway administration subnet of target BS sign to the service access service network gateway;
Dynamic Host Configuration Protocol server corresponding in the objective network is chosen the unit, be positioned at described terminal, be used for the corresponding Dynamic Host Configuration Protocol server of link prefix information selected target network according to available Dynamic Host Configuration Protocol server information of obtaining from described service Dynamic Host Configuration Protocol server and described target access network gateway administration subnet;
Target forward address and target forward address configuration information acquiring unit, be positioned at described terminal, be used for obtaining target forward address and target forward address configuration information, carry out switching according to described target forward address and target forward address configuration information to the described selected corresponding Dynamic Host Configuration Protocol server of objective network.
Described system also comprises:
Service Dynamic Host Configuration Protocol server positioning unit is positioned at described terminal, is used for terminal positioning service Dynamic Host Configuration Protocol server.
Described system also comprises:
Comparing unit, be positioned at terminal, the information that is used for the available Dynamic Host Configuration Protocol server that comprises by the DHCP Advertise message that the service Dynamic Host Configuration Protocol server is replied, compare the Dynamic Host Configuration Protocol server of correspondence in the selected target network with terminal to the information that the service access service network gateway obtains the available Dynamic Host Configuration Protocol server that obtains in the link prefix information process of the corresponding target access service network gateway administration subnet of target BS sign.
Terminal of the present invention comprises:
A kind of terminal accesses to access service network by serving BS and the service access service network gateway that inserts, and comprising:
Link prefix information acquiring unit is used for according to the target BS sign, obtains the link prefix information and the service Dynamic Host Configuration Protocol server of the corresponding target access service network gateway administration subnet of target BS sign to the service access service network gateway;
Dynamic Host Configuration Protocol server corresponding in the objective network is chosen the unit, be positioned at described terminal, be used for the corresponding Dynamic Host Configuration Protocol server of link prefix information selected target network according to available Dynamic Host Configuration Protocol server information of obtaining from described service Dynamic Host Configuration Protocol server and described target access network gateway administration subnet;
Target forward address and target forward address configuration information acquiring unit, be used for obtaining target forward address and target forward address configuration information, carry out switching according to described target forward address and target forward address configuration information to the described selected corresponding Dynamic Host Configuration Protocol server of objective network.
Described terminal also comprises:
Service Dynamic Host Configuration Protocol server positioning unit is used for terminal positioning service Dynamic Host Configuration Protocol server.
Described terminal also comprises:
Comparing unit, the information that is used for the available Dynamic Host Configuration Protocol server that comprises by the Advertise message that the service Dynamic Host Configuration Protocol server is replied, compare the Dynamic Host Configuration Protocol server of correspondence in the selected target network with terminal to the information that the service access service network gateway obtains the available Dynamic Host Configuration Protocol server that obtains in the link prefix information process of the corresponding target access service network gateway administration subnet of target BS sign.
Can obtain T-CoA relevant information in objective network by the multiple mode that the WiMAX system is supported at S-ASN-GW by the present invention program MS, solved at present switching flow WiMAX many kinds of addresses relevant information obtain manner fast single problem, be in the WiMAX system, to realize switching fast the precondition of creating.
Description of drawings
Fig. 1 is a MIPv6 operation principle schematic diagram in the prior art;
Fig. 2 is a WiMAX system configuration schematic diagram in the prior art;
Fig. 3 is a WiMAX MIPv6 workflow schematic diagram in the prior art;
Fig. 4 is a main flow schematic diagram of the present invention;
Fig. 5 is the schematic flow sheet of the embodiment of the invention 1;
Fig. 6 is the schematic flow sheet of the embodiment of the invention 2;
Fig. 7 is terminal of the present invention and system configuration schematic diagram.
Embodiment
Below in conjunction with Figure of description the specific embodiment of the present invention is described.
The present invention is directed to the problem that prior art exists, propose a kind of MS and changing method and system, guarantee that MS can obtain its T-CoA relevant information in objective network in the multiple mode that S-ASN-GW is supported by the WiMAX system.
As shown in Figure 4, be main flow schematic diagram of the present invention, as seen from the figure, mainly may further comprise the steps:
S410, MS are according to T-BS ID, and the T-ASN-GW that obtains T-BS ID correspondence to S-ASN-GW closes the configuration information of administering subnet.
The configuration information of the T-ASN-GW administration subnet of above-mentioned T-BS ID correspondence comprises that the T-ASN-GW of T-BS ID correspondence administers the link prefix information and/or the link layer information of subnet.
In this step, all right positioning service Dynamic Host Configuration Protocol server of MS comprises:
MS sends DHCPv6 Solicit message;
The service Dynamic Host Configuration Protocol server is responded DHCPv6Advertise message, in the described DHCPv6Advertise message, carries described service Dynamic Host Configuration Protocol server information.
In the said process, the step of described MS positioning service Dynamic Host Configuration Protocol server can be positioned at before MS obtains the link prefix information of T-ASN-GW administration subnet from T-BS ID correspondence to S-ASN-GW, simultaneously or afterwards.
In the such scheme, MS can also be according to T-BS ID, obtain the service Dynamic Host Configuration Protocol server information of the T-ASN-GW administration subnet of T-BS ID correspondence to S-ASN-GW, if MS selects a certain available Dynamic Host Configuration Protocol server by the above-mentioned validation of information that S-ASN-GW sent, then the correlation step of back positioning service Dynamic Host Configuration Protocol server also can dispense.
S420, MS obtain T-CoA and T-CoA configuration information according to the configuration information of described T-ASN-GW administration subnet;
In the above-mentioned steps, can obtain T-CoA configuration information and/or T-CoA by MS corresponding Dynamic Host Configuration Protocol server in the selected target network.This T-CoA configuration information comprises available name server tabulation and NTP (Network Time Protocol) etc.
Dynamic Host Configuration Protocol server corresponding in this selected target network can be by the information of the available Dynamic Host Configuration Protocol server that comprises in the DHCPv6Advertise message of MS with service Dynamic Host Configuration Protocol server answer among the step S410, compare the Dynamic Host Configuration Protocol server of correspondence in the selected target network with MS to the information that S-ASN-GW obtains the available Dynamic Host Configuration Protocol server that obtains in the link prefix information process of the corresponding T-ASN-GW administration subnet of T-BS ID.
In the above-mentioned steps, be to send request by MS corresponding Dynamic Host Configuration Protocol server in objective network to obtain T-CoA configuration information and/or T-CoA, in fact also can obtain above-mentioned information by other modes, can administer the link prefix information and MS self address information of subnet according to T-ASN-GW such as MS, calculate T-CoA.
S430, MS carry out switching according to described T-CoA and T-CoA configuration information.
MS can switch to T-BS smoothly according to described T-CoA and T-CoA configuration information, and this process is a known technology, needn't give unnecessary details at this.
Such scheme makes MS to obtain T-CoA relevant information in objective network by the multiple mode that the WiMAX system is supported at S-ASN-GW, having solved the at present quick single problem of switching flow WiMAX address relevant information obtain manner, is to realize switching fast the precondition of creating in the WiMAX system.
Below in conjunction with specific embodiment implementation process of the present invention is described.
As shown in Figure 5, be the schematic flow sheet of the embodiment of the invention 1, may further comprise the steps:
S501, MS find new BS and BS ID thereof by link layer mechanism, select the BS that may switch to simultaneously.
S502, MS send RtSolPr message (wherein comprising T-BS ID) to S-ASN-GW, ask its relevant information that issues the subnet that T-ASN-GW administers of T-BS ID correspondence (as link layer address, link prefix etc.).
S503, after S-ASN-GW receives this message, the relevant information of the pairing T-ASN-GW of T-BS ID administration subnet is carried in the PrRtAdv message sends to MS.
Among the above-mentioned steps S503, after if MS receives PrRtAdv, the T-BS and the S-BS that find its selection are positioned under the same subnet, the ASN-GW that is to say both correspondences identical (the link prefix of two perhaps corresponding ASN-GW administration subnets is identical), from carrying out obtaining of T-CoA relevant information, can continue to use S-CoA.
S504, MS orientate the Dynamic Host Configuration Protocol server of its service as by sending DHCPv6 Solicit message.
S505, respond MS with DHCPv6 Advertise message, wherein comprise information of some relevant these Dynamic Host Configuration Protocol server for the Dynamic Host Configuration Protocol server of MS service.
The information of the available Dynamic Host Configuration Protocol server that comprises in the DHCPv6Advertise message that S506, MS are replied by the service Dynamic Host Configuration Protocol server of receiving among the above-mentioned steps S505, compare the Dynamic Host Configuration Protocol server of correspondence in the selected target network with MS among the step S503 to the information that S-ASN-GW obtains the available Dynamic Host Configuration Protocol server that obtains in the link prefix information process of the corresponding T-ASN-GW administration subnet of T-BS ID.
Such as: as if what obtain among the PrRtAdv is 3FFE: :/64, then from the message of a plurality of DHCPv6 server responses, be chosen in the address that has the target Dynamic Host Configuration Protocol server in the message and be the address of 3FFE::xxxx:xxxx:xxxx:xxxx (prefix 3FFE: :/64, wherein x is 16 system numbers).
If S-ASN-GW issues the locating information of the Dynamic Host Configuration Protocol server of serving for MS in objective network in step S503, then step S504～step S506 needn't carry out.
Order between above-mentioned steps S504, S505 and step S502, the S503 can not done requirement successively, even generation can simultaneously.
S507, MS come requirement to selected Dynamic Host Configuration Protocol server transmission DHCPv6 Request, and it issues T-CoA itself and T-CoA configuration information (as available DNS tabulation, NTP tabulation etc.).
S508, Dynamic Host Configuration Protocol server issue the information that MS requires by DHCPv6 Reply message.
T-CoA itself that S509, MSS obtain at objective network from DHCPv6 Reply message and T-CoA configuration information.
S510, remaining switch step, little with content association that this document is paid close attention to, just do not give unnecessary details here.
Embodiment 1 is pure Stateful mode, T-CoA address itself and configuration information that MS obtains at objective network by the DHCP mode.
Embodiment 2: as shown in Figure 6, may further comprise the steps:
S601, MS find new BS and BS ID thereof by link layer mechanism, select the BS that may switch to simultaneously.
S602, MS send RtSolPr message (wherein comprising T-BS ID) to S-ASN-GW, ask its relevant information that issues the subnet that T-ASN-GW administers of T-BS ID correspondence (as link layer address, link prefix etc.).
S603, after S-ASN-GW receives this message, the relevant information of the pairing T-ASN-GW of T-BS ID administration subnet is carried in the PrRtAdv message sends to MS.
After if MS receives PrRtAdv, the T-BS and the S-BS that find its selection are positioned under the same subnet, that is to say the ASN-GW identical (the link prefix of two perhaps corresponding ASN-GW administration subnets is identical) of both correspondences, from carrying out obtaining of T-CoA relevant information, can continue to use S-CoA.
S604, MS are by link prefix in the objective network that PrRtAdv comprised, and 64 interfaceidentifier (interface identifier is that 64bits is long, availablely calculate, for example can calculate its interface identifier of 64 according to the 48 bit mac addresses of MS based on the EUI-64 method) form oneself T-CoA address:
The Prefix+interface identifier of the T-CoA=field network of MS
For example:
3FFE::20AC:76FF:FE0A:9A7C (prefix is 3FFE: :/64, interface identifier is 20AC:76FF:FE0A:9A7C)
S605, MS orientate the Dynamic Host Configuration Protocol server of its service as by sending DHCPv6 Solicit message.
S606, respond MS with DHCPv6 Advertise message, wherein comprise information of some relevant these Dynamic Host Configuration Protocol server for the Dynamic Host Configuration Protocol server of MS service.
The information of the available Dynamic Host Configuration Protocol server that comprises in the DHCPv6Advertise message that the service Dynamic Host Configuration Protocol server that S607, MS receive by above-mentioned steps S606 is replied, compare the Dynamic Host Configuration Protocol server of correspondence in the selected target network with MS to the information that S-ASN-GW obtains the available Dynamic Host Configuration Protocol server that obtains in the link prefix information process of the corresponding T-ASN-GW administration subnet of T-BS ID.
If in the such scheme in step S603 S-ASN-GW issue in objective network under the situation for the locating information of the Dynamic Host Configuration Protocol server of MS service, step S605～step S607 needn't carry out.
Step S605, S606 and step S602, S603 order between the two can be put upside down, even can carry out simultaneously.
S608, MS come requirement to selected Dynamic Host Configuration Protocol server transmission DHCPv6 Information Request, and it issues T-CoA configuration information (as available DNS tabulation, NTP tabulation etc.).
S609, Dynamic Host Configuration Protocol server issue the desired information of MS by DHCPv6 Reply message.
S610, MSS obtain at the T-CoA of objective network configuration information from DHCPv6 Reply message.
S611, remaining switch step, little with content association that this document is paid close attention to, just do not give unnecessary details here.
Embodiment 2 is Stateful/Stateless hybrid modes, the T-CoA address itself that MS obtains at objective network by the mode of Stateless, the configuration information of the T-CoA that obtains at objective network by the mode of Stateful.
In the scheme of the foregoing description 1 and embodiment 2, it is complementary that automatic configuration of state and the automatic configuration of stateless are arranged in the agreement of IPv6, as the address that can utilize the automatic configuration of stateless to obtain CoA, and obtains the CoA configuration information by there being state to dispose automatically.
As shown in Figure 7, be the structural representation of MS of the present invention and switched system, be included as S-BS730 and S-ASN-GW750 that MS710 provides access, and the MS T-BS720 and the T-ASN-GW740 that desire to switch to, MS comprises in this system:
Link prefix information acquiring unit 711 is used for the ID according to T-BS, obtains the link prefix information of the T-ASN-GW administration subnet of T-BSID correspondence to S-ASN-GW;
T-CoA and T-CoA configuration information acquiring unit are used for obtaining T-CoA and T-CoA configuration information according to the link prefix information of described T-ASN-GW administration subnet;
Dynamic Host Configuration Protocol server positioning unit 712 is used for MS positioning service Dynamic Host Configuration Protocol server;
Dynamic Host Configuration Protocol server corresponding in the objective network is chosen unit 713, is used for the corresponding Dynamic Host Configuration Protocol server of selected target network;
Comparing unit 714, the information of the available Dynamic Host Configuration Protocol server that the DHCPv6Advertise message that is used for will the service Dynamic Host Configuration Protocol server replying comprises, compare the Dynamic Host Configuration Protocol server of correspondence in the selected target network with MS to the information that S-ASN-GW obtains the available Dynamic Host Configuration Protocol server that obtains in the link prefix information process of the corresponding T-ASN-GW administration subnet of T-BS ID;
Can obtain T-CoA relevant information in objective network by the multiple mode that the WiMAX system is supported at S-ASN-GW by the present invention program MS, solved at present switching flow WiMAX many kinds of addresses relevant information obtain manner fast single problem, be in the WiMAX system, to realize switching fast the precondition of creating.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (13)
1, a kind of terminal switching method is characterized in that, comprising:
A, terminal identify according to target BS, obtain the configuration information and the service Dynamic Host Configuration Protocol server of the corresponding target access service network gateway administration subnet of target BS sign to the service access service network gateway;
B, terminal are administered the configuration information of subnet according to available Dynamic Host Configuration Protocol server information of obtaining from described service Dynamic Host Configuration Protocol server and described target access network gateway, the Dynamic Host Configuration Protocol server of correspondence in the selected target network, Dynamic Host Configuration Protocol server corresponding in described objective network obtains target forward address and target forward address configuration information;
C, terminal are carried out switching according to described target forward address and target forward address configuration information.
2, the method for claim 1, it is characterized in that, in the described steps A, the configuration information of marking access service network gateway administration subnet certainly that described target BS sign is corresponding comprises that target BS identifies the link prefix information and/or the link layer information of corresponding target access service network gateway administration subnet.
3, the method for claim 1 is characterized in that, also comprises in the described steps A:
Terminal positioning service Dynamic Host Configuration Protocol server.
4, method as claimed in claim 3, it is characterized in that, in the described steps A, the step of described terminal positioning service Dynamic Host Configuration Protocol server is positioned at terminal and obtains before the step of link prefix information of the corresponding target access service network gateway administration subnet of target BS sign to the service access service network gateway, simultaneously or afterwards.
5, method as claimed in claim 4 is characterized in that, in the described steps A, described terminal positioning service Dynamic Host Configuration Protocol server further comprises:
Terminal sends DHCP Solicit message;
The service Dynamic Host Configuration Protocol server is responded DHCP Advertise message, in the described Advertise message, carries available Dynamic Host Configuration Protocol server information.
6, method as claimed in claim 5 is characterized in that, among the described step B, Dynamic Host Configuration Protocol server corresponding in the terminal selected target network further comprises:
The information of the available Dynamic Host Configuration Protocol server that comprises in the DHCP Advertise message of terminal by the answer of service Dynamic Host Configuration Protocol server, compare the Dynamic Host Configuration Protocol server of correspondence in the selected target network with terminal to the information that the service access service network gateway obtains the available Dynamic Host Configuration Protocol server that obtains in the link prefix information process of the corresponding target access service network gateway administration subnet of target BS sign.
7, the method for claim 1 is characterized in that, described target forward address configuration information comprises one of following content or combination:
Available name server tabulation and network time server tabulation.
8, a kind of terminal switching system is included as serving BS and service access service network gateway that terminal provides access, and terminal target BS and the target access service network gateway desiring to switch to, it is characterized in that, also comprises:
Link prefix information acquiring unit, be positioned at described terminal, be used for according to the target BS sign, obtain the link prefix information and the service Dynamic Host Configuration Protocol server of the corresponding target access service network gateway administration subnet of target BS sign to the service access service network gateway;
Dynamic Host Configuration Protocol server corresponding in the objective network is chosen the unit, be positioned at described terminal, be used for the corresponding Dynamic Host Configuration Protocol server of link prefix information selected target network according to available Dynamic Host Configuration Protocol server information of obtaining from described service Dynamic Host Configuration Protocol server and described target access network gateway administration subnet;
Target forward address and target forward address configuration information acquiring unit, be positioned at described terminal, be used for obtaining target forward address and target forward address configuration information, carry out switching according to described target forward address and target forward address configuration information to the described selected corresponding Dynamic Host Configuration Protocol server of objective network.
9, system as claimed in claim 8 is characterized in that, also comprises:
Service Dynamic Host Configuration Protocol server positioning unit is positioned at described terminal, is used for terminal positioning service Dynamic Host Configuration Protocol server.
10, system as claimed in claim 9 is characterized in that, also comprises:
Comparing unit, be positioned at terminal, the information that is used for the available Dynamic Host Configuration Protocol server that comprises by the DHCP Advertise message that the service Dynamic Host Configuration Protocol server is replied, compare the Dynamic Host Configuration Protocol server of correspondence in the selected target network with terminal to the information that the service access service network gateway obtains the available Dynamic Host Configuration Protocol server that obtains in the link prefix information process of the corresponding target access service network gateway administration subnet of target BS sign.
11, a kind of terminal accesses to access service network by serving BS and the service access service network gateway that inserts, and it is characterized in that, comprising:
Link prefix information acquiring unit is used for according to the target BS sign, obtains the link prefix information and the service Dynamic Host Configuration Protocol server of the corresponding target access service network gateway administration subnet of target BS sign to the service access service network gateway;
Dynamic Host Configuration Protocol server corresponding in the objective network is chosen the unit, be positioned at described terminal, be used for the corresponding Dynamic Host Configuration Protocol server of link prefix information selected target network according to available Dynamic Host Configuration Protocol server information of obtaining from described service Dynamic Host Configuration Protocol server and described target access network gateway administration subnet;
Target forward address and target forward address configuration information acquiring unit, be used for obtaining target forward address and target forward address configuration information, carry out switching according to described target forward address and target forward address configuration information to the described selected corresponding Dynamic Host Configuration Protocol server of objective network.
12, terminal as claimed in claim 11 is characterized in that, also comprises:
Service Dynamic Host Configuration Protocol server positioning unit is used for terminal positioning service Dynamic Host Configuration Protocol server.
13, terminal as claimed in claim 12 is characterized in that, also comprises:
Comparing unit, the information that is used for the available Dynamic Host Configuration Protocol server that comprises by the Advertise message that the service Dynamic Host Configuration Protocol server is replied, compare the Dynamic Host Configuration Protocol server of correspondence in the selected target network with terminal to the information that the service access service network gateway obtains the available Dynamic Host Configuration Protocol server that obtains in the link prefix information process of the corresponding target access service network gateway administration subnet of target BS sign.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100757089A CN100574503C (en) | 2006-04-18 | 2006-04-18 | A kind of terminal and terminal switching method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100757089A CN100574503C (en) | 2006-04-18 | 2006-04-18 | A kind of terminal and terminal switching method and system |
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| Publication Number | Publication Date |
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| CN101043737A CN101043737A (en) | 2007-09-26 |
| CN100574503C true CN100574503C (en) | 2009-12-23 |
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| CNB2006100757089A Expired - Fee Related CN100574503C (en) | 2006-04-18 | 2006-04-18 | A kind of terminal and terminal switching method and system |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127727B (en) * | 2007-09-28 | 2012-07-04 | 电信科学技术研究院 | IP address configuration and mobile detection method for mobile IP |
| CN101998540B (en) * | 2007-11-09 | 2014-02-26 | 华为技术有限公司 | Method, device and system for realizing optimized switching of network |
| CN101431780B (en) * | 2007-11-09 | 2010-12-22 | 华为技术有限公司 | Method, equipment and system for implementing network optimization switch |
| CN102625470A (en) * | 2008-08-13 | 2012-08-01 | 华为技术有限公司 | Communication connection establishing method and network element |
| CN101820609B (en) * | 2009-02-26 | 2013-01-02 | 华为技术有限公司 | Method and system for controlling local switching |
| CN101888630B (en) * | 2009-05-11 | 2014-06-11 | 华为终端有限公司 | Authentication Method, system and device for switching access networks |
| CN101888631B (en) * | 2009-05-11 | 2014-02-19 | 华为终端有限公司 | Method, system and equipment for switching access network |
| CN102056258B (en) * | 2009-10-30 | 2015-08-12 | 中兴通讯股份有限公司 | A kind of method and system realizing terminal switch |
| CN102123378B (en) * | 2010-01-12 | 2015-01-28 | 中兴通讯股份有限公司 | Method for switching terminal and corresponding communication network |
| CN102170668A (en) * | 2010-02-25 | 2011-08-31 | 华为技术有限公司 | Method, device and system for switching in wireless relay network |
| CN102546847B (en) * | 2010-12-30 | 2015-10-28 | 中兴通讯股份有限公司 | Information processing method, name server and couple in router |
| CN102595374B (en) * | 2011-01-17 | 2015-04-01 | 中国电信股份有限公司 | Mobility management method and system based on handover-delay IPv6 (Internet Protocol Version 6) protocol |
| CN102958040B (en) * | 2011-08-30 | 2015-02-25 | 中国联合网络通信集团有限公司 | Mobility management network and mobile management inter-domain handover method |
| US9392494B2 (en) * | 2013-07-15 | 2016-07-12 | Qualcomm Incorporated | Systems and methods for reduced latency during initial link setup |
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