CN101594298B - Multi-interface service flow switching method of mobile communication system and device - Google Patents
Multi-interface service flow switching method of mobile communication system and device Download PDFInfo
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- CN101594298B CN101594298B CN2009100835217A CN200910083521A CN101594298B CN 101594298 B CN101594298 B CN 101594298B CN 2009100835217 A CN2009100835217 A CN 2009100835217A CN 200910083521 A CN200910083521 A CN 200910083521A CN 101594298 B CN101594298 B CN 101594298B
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Abstract
The invention provides a multi-interface service flow switching method of a mobile communication system, which is used for switching service flow between an opposite communication node and a first network interface on a mobile terminal of the mobile communication system into a second network interface on the mobile terminal, wherein the service flow of the first network interface and the second network interface is forwarded through the same local mobile anchor point; and the method comprises: triggering a service flow switching process, wherein the mobile terminal sends an SH_Request of converting a service flow from the first network interface to the second network interface to the local mobile anchor point through the second network interface; after the local mobile anchor point receives the SH_Request, returning a service flow switching response SH_ACK to the mobile terminal; and establishing a bidirectional tunnel among the first network interface, the second network interface and the local mobile anchor point between the local mobile anchor point and the mobile terminal.
Description
Technical field
The Business Stream that the present invention relates in the mobile communication system switches, particularly the multi-interface service flow switching method in the mobile communication system.
Background technology
In next generation mobile Internet, because the mobile various drawbacks of bringing of the overall situation (large such as signaling consumption, need to revise main frame etc.), the internet engineering task group IETF of International Standards Organization has passed through RFC5213: based on network regional proxy mobile IPv 6 (PMIPv6).In the PMIPv6 definition, use the network area of a mobile node mobile management of PMIPv6 protocol processes behavior to be called as Proxy Mobile IPv6 Domain (hereinafter to be referred as the PMIPv6 territory).In this territory, the functional entity of core is local mobile anchor (Local Mobility Anchor, LMA) and Mobile Access Gateway (Mobile Access Gateway, MAG).LMA is responsible for keeping mobile node addressable, while or the supplier of moving nodes local network prefix.MAG represents mobile node and carries out mobile management, and it is positioned at the position of mobile node access, be responsible for detection node movement and and LMA between the Signalling exchanges such as binding registration.
In PMIPv6, portable terminal (MN) needs access Mobile Access Gateway (MAG) to realize and extraneous communicating by letter.For the portable terminal that has a plurality of network interfaces, each interface may access different MAG.The heterogeneous networks interface of same portable terminal may be different at aspects such as interface type, access network situations.The network that accesses when a certain network interface of a portable terminal stops up, or need to stop the communication process of some network interfaces institute access network owing to reasons such as rate the time, portable terminal need to be done Business Stream and switch between network interface.At present, in regional proxy mobile IPv 6 network, also there is not the correlation technique that Business Stream switches between interface.
Summary of the invention
An object of the present invention is to provide a kind of method that Business Stream switches that between mobile terminal Internet access network interface, realizes.
Another object of the present invention provides a kind of device that Business Stream switches of realizing between mobile terminal Internet access network interface.
To achieve these goals, the invention provides the multi-interface service flow switching method in a kind of mobile communication system, for the second network interface that the Business Stream between the first network interface on the portable terminal of opposite end communication node and described mobile communication system is switched on this portable terminal, the Business Stream of described first network interface and described second network interface is transmitted by same local mobile anchor; The method comprises:
Step 1), trigger Business Stream handoff procedure, described portable terminal switches from described first network interface a Business Stream to described local mobile anchor transmission by request SH_Request from described second network interface to described second network interface;
Step 2), after described local mobile anchor receives described SH_Request request, return Business Stream handover acknowledge SH_ACK to described portable terminal;
Step 3), set up bidirectional tunnel between first network interface, second network interface and local mobile anchor between described local mobile anchor and described portable terminal.
In the technique scheme, in described step 1) in also comprise the Business Stream switching table on the portable terminal of being saved in the SH_Request request, and in described step 2) in also comprise the content of resolving the SH_Request request receive and the Business Stream switching table that is saved in local mobile anchor, and in described step 3) in comprise that also call number with described bidirectional tunnel writes respectively Business Stream switching table on the portable terminal and the Business Stream switching table of local mobile anchor; The method also comprises:
Step 4-1), described opposite end communication node sends packet to described first network interface;
Step 4-2), after described local mobile anchor receives packet, check the Business Stream switching table on the local mobile anchor, discovery will switch to described second network interface from described first network interface with the Business Stream relevant with packet;
Step 4-3), described local mobile anchor mails to the specified tunnel of described Business Stream switching table with described packet;
Step 4-4), described packet arrives described first network interface via described tunnel.
In the technique scheme, in described step 1) in also comprise the Business Stream switching table on the portable terminal of being saved in the SH_Request request, and in described step 2) in also comprise the content of resolving the SH_Request request receive and the Business Stream switching table that is saved in local mobile anchor, and in described step 3) in comprise that also call number with described bidirectional tunnel writes respectively Business Stream switching table on the portable terminal and the Business Stream switching table of local mobile anchor; The method also comprises:
Step 5-1), described first network interface sends packet to described opposite end communication node;
Step 5-2), described portable terminal checks the Business Stream switching table on the portable terminal, discovery will switch to described second network interface from described first network interface with the Business Stream relevant with packet;
Step 5-3), described portable terminal arrives the specified tunnel of described Business Stream switching table with the Packet Generation that will send;
Step 5-4), described packet arrives described local mobile anchor via described tunnel, by described local mobile anchor with package forward to the opposite end communication node.
In the technique scheme, the content of described SH_Request request comprises: the port numbers of Business Stream source address, Business Stream destination address and Business Stream.
In the technique scheme, described Business Stream switching table comprises a gauge outfit and a plurality of list cell; Described gauge outfit comprises table name and list cell quantity; Described list cell comprises sequence number, Business Stream source address, Business Stream destination address, traffic flow port number, tunnel call number information.
The present invention also provides the switching device shifter of the multi-interface service flow in a kind of mobile communication system, for the second network interface that the Business Stream between the first network interface on the portable terminal of opposite end communication node and described mobile communication system on the Internet is switched on this portable terminal, the Business Stream of described first network interface and described second network interface is transmitted by same local mobile anchor; This device comprises Business Stream handover request initiation module, Business Stream handover request responder module, building tunnel module; Wherein,
Described Business Stream handover request initiation module is used for triggering the Business Stream handoff procedure, and described portable terminal sends the request SH_Request that a Business Stream is switched to described second network interface from described first network interface by described second network interface to described local mobile anchor;
Described Business Stream handover request responder module is used for so that after described local mobile anchor receives described SH_Request request, return Business Stream handover acknowledge SH_ACK to described portable terminal;
Described building tunnel module is used for so that set up bidirectional tunnel between first network interface, second network interface and local mobile anchor between described local mobile anchor and described portable terminal.
The invention has the advantages that: the present invention both can be used for the regulating networks load balancing, can improve again the robustness of PMIPv6 system, was convenient to propagation and employment.
Description of drawings
Fig. 1 is the schematic diagram of the embodiment in a PMIPv6 territory, and two of portable terminal network interface IF1, IF2 are connected to local mobile anchor LMA by Mobile Access Gateway MAG1, MAG2 respectively in this embodiment;
Fig. 2 is the portable terminal in embodiment illustrated in fig. 1 is initiated schematic diagram from the request that Business Stream switches from network interface IF1 to network interface IF2 to LMA;
Fig. 3 is the schematic diagram of the data format of Business Stream handover request SH_Request;
Fig. 4 is the schematic diagram of the data format of Business Stream switching table;
Fig. 5 is that the LMA in embodiment illustrated in fig. 1 confirms the request of portable terminal, and returns the schematic diagram of Business Stream handover acknowledge to portable terminal;
Fig. 6 is the schematic diagram of the data format of Business Stream handover acknowledge SH_ACK;
Fig. 7 is the schematic diagram of setting up the tunnel between LMA in embodiment illustrated in fig. 1 and portable terminal, after setting up the tunnel, originally the Business Stream that mail to network interface IF1 will mail to network interface IF2 via the tunnel, will send via the tunnel from IF2 from the Business Stream of network interface IF1;
Fig. 8 is the schematic diagram that sends the operating process of packet from CN to IF1;
Fig. 9 is the schematic diagram that sends the operating process of packet from IF1 to CN.
Embodiment
The present invention will be further described below in conjunction with the drawings and specific embodiments.
In one embodiment, as shown in Figure 1, suppose that a portable terminal has two network interfaces, represent with IF1, IF2 respectively, these two network interfaces have same local mobile anchor LMA in same PMIPv6 territory.IF1 access Mobile Access Gateway MAG1, IF2 access Mobile Access Gateway MAG2, MAG1 and MAG2 are connected respectively on the LMA.Under normal circumstances, above-mentioned two network interfaces of this portable terminal carry out network service by different paths and the opposite end communication node (CN) in the internet, but all Business Streams in the network service all need to transmit by described LMA.
Suppose at a time, block via the communication path of network interface IF1 so that the opposite end communication node that communicates with network interface IF1 in the internet mail to the Business Stream of IF1 may be because of the obstruction of communication path interrupt.In order to prevent the interruption of Business Stream, the Business Stream between network interface IF1 and its opposite end communication node need to be switched on the network interface IF2, by IF2 work flow is issued IF1 again.
In order to realize above-mentioned Business Stream handoff procedure, as shown in Figure 2, portable terminal at first sends the request SH_Request that a certain Business Stream is switched from IF1 to IF2 by IF2 via MAG2 to LMA.In Fig. 3, provide the data format of SH_Request request, therefrom can find out, comprised the information such as port numbers of Business Stream source address, Business Stream destination address and Business Stream in this solicited message.With regard to the present embodiment, if the Business Stream that switches is the Business Stream that mails to IF1 from CN, the Business Stream source address that then comprises in the SH_Request request is the address of CN, the Business Stream destination address is the address of IF, similarly, if the Business Stream that switches is the Business Stream that mails to CN from IF1, the Business Stream source address that then comprises in the SH_Request request is the address of IF, and the Business Stream destination address is the address of CN.
Portable terminal also needs the information such as port numbers of the Business Stream source address, Business Stream destination address and the Business Stream that comprise in will the SH_Request request to write among the Business Stream switching table MN_Profile of self except send the SH_Request request to LMA.Therefore the Business Stream switching table LMA_Profile of the Business Stream switching table MN_Profile of portable terminal and the LMA that hereinafter mentions, can represent with data format shown in Figure 4 on data format and indifference.As can be seen from the figure, a Business Stream switching table comprises a gauge outfit and a plurality of list cell, and gauge outfit wherein comprises table name and list cell quantity; List cell comprises sequence number, Business Stream source address, Business Stream destination address, traffic flow port number, tunnel call number information.
After LMA receives the SH_Request request that portable terminal sends, resolve the content of this request, the information such as port numbers of entrained Business Stream source address, Business Stream destination address and Business Stream in the request are write among the Business Stream switching table LMA_Profile of LMA.LMA as shown in Figure 5, also will reply Business Stream handover acknowledge SH_ACK to portable terminal for this request after resolving the SH_Request request.In Fig. 6, provided the data format of Business Stream handover acknowledge SH_ACK, therefrom can find out, the information such as port numbers that comprise Business Stream source address, Business Stream destination address and Business Stream in this response message, the content of relevant information should be consistent in replying the middle above-mentioned information that comprises and SH_Request asking.
LMA as shown in Figure 7, also will set up to portable terminal and lead to the tunnel of IF1 via MAG2, IF2, and the tunnel call number be write the Business Stream switching table LMA_Profile of LMA except replying SH_ ACK replys.
Portable terminal is received the Business Stream handover acknowledge SH_ACK that LMA sends, and sets up the tunnel between IF1 and the LMA, and the tunnel call number is write the Business Stream switching table MN_Profile of portable terminal.
After having set up the tunnel that leads to IF1 between LMA and portable terminal, when IF1 need to the internet in opposite end communication node when communicating, relevant Business Stream can be switched to IF2 from IF1, so that Business Stream is finally transmitting in IF1-IF2-MAG2-LMA-CN.
Communicating by letter between IF1 and opposite end communication node can be divided into IF1 and send data and the opposite end communication node sends data to IF1 to the opposite end communication node.After the below was switched Business Stream, the transmission flow of packet described respectively under the both of these case.
After carrying out the Business Stream switching, opposite end communication node (CN) sends data to IF1, with reference to figure 7 and Fig. 8 left-half, comprises following flow process:
Step 1-1, CN send packet to IF1;
Step 1-2, LMA receive that CN mails to the packet of IF1, check the Business Stream switching table LMA_Profile of LMA, find that this Business Stream needs to switch to IF2 by IF1;
Step 1-3, LMA mail to this packet in the tunnel of appointment among the LMA_Profile, and namely LMA stamps the ipv6 header that destination address is IF2 at this packet skin;
Step 1-4, because the outer packet header of packet this moment destination address is IF2, LMA stamps the ipv6 header to MAG2 by LMA according to the normal flow of PMIPv6 again at the packet skin;
Step 1-5, MAG2 receive the packet from LMA, remove the header that destination address is MAG2, and this moment, the destination address of packet outer header was IF2, and MAG2 is with the IF2 of package forward to MN;
Step 1-6, IF2 receive the packet from MAG2, remove the header that destination address is IF2, and this moment, packet outer header destination address was IF1, and IF2 transfers to IF1 with packet and processes;
Step 1-7, CN by LMA, MAG2, IF2 the most at last Packet Generation to IF1.
Provided in the right half part of Fig. 8 and do not carried out Business Stream when switching, CN sends in the process of packet the associative operation to packet to IF1.Can find out above-mentioned step 1-3,1-4,1-5,1-6 and do not carry out the correlation step of Business Stream when switching and have significantly different from these operations.For example, in step 1-3, LMA need to stamp the ipv6 header that destination address is IF2 at the packet skin, and when not doing Business Stream and switching, LMA is that the packet skin is stamped the ipv6 header that destination address is MAG1.In other steps, there is similarly difference.
After carrying out the Business Stream switching, IF1 sends data to opposite end communication node (CN), with reference to figure 7 and Fig. 9 left-half, comprises following flow process:
Step 2-1, IF1 send packet to CN;
Step 2-2, MN find that by the Business Stream switching table MN_Profile that checks MN this Business Stream needs to switch to IF2 by IF1;
Step 2-3, MN mail to this packet in the tunnel of appointment among the MN_Profile, and namely to stamp source address at this packet skin be that IF2, destination address are the ipv6 header of LMA to MN, so packet mails to MAG2 from IF2;
Step 2-4, MAG2 receive the packet from IF2, stamp the ipv6 header to LMA by MAG2 according to the normal flow of PMIPv6 at the packet skin again;
Step 2-5, LMA receive the packet from MAG2, remove the header that destination address is LMA, and this moment, the destination address of packet outer header was CN, LMA with package forward to CN;
Step 2-6, IF1 by IF2, MAG2, LMA the most at last Packet Generation to CN.
Provided in the right half part of Fig. 9 and do not carried out Business Stream when switching, IF1 sends in the process of packet the associative operation to packet to CN.Can find out from these operations, above-mentioned step 2-3,2-4,2-5,2-6 etc. from do not carry out the correlation step of Business Stream when switching and have significantly different.For example, in step 2-3, it is that IF2, destination address are the ipv6 header of LMA that MN stamps source address at this packet skin, and when not doing Business Stream and switching, and is that to stamp source address be that MAG1, destination address are the header of LMA to the corresponding data bag by MAG1.
The present invention also provides the switching device shifter of the multi-interface service flow in a kind of mobile communication system, for the second network interface that the Business Stream between the first network interface on the portable terminal of opposite end communication node and described mobile communication system on the Internet is switched on this portable terminal, the Business Stream of described first network interface and described second network interface is transmitted by same local mobile anchor; This device comprises Business Stream handover request initiation module, Business Stream handover request responder module, building tunnel module; Wherein,
Described Business Stream handover request initiation module is used for triggering the Business Stream handoff procedure, and described portable terminal sends the request SH_Request that a Business Stream is switched to described second network interface from described first network interface by described second network interface to described local mobile anchor;
Described Business Stream handover request responder module is used for so that after described local mobile anchor receives described SH_Request request, return Business Stream handover acknowledge SH_ACK to described portable terminal;
Described building tunnel module is used for so that set up bidirectional tunnel between first network interface, second network interface and local mobile anchor between described local mobile anchor and described portable terminal.
The characteristics that the Business Stream that method and apparatus of the present invention utilizes the heterogeneous networks interface on the portable terminal all need to be transmitted via LMA, initiate the request of Business Stream switching at portable terminal after, set up the tunnel between LMA and portable terminal, so that can proper communication between the portable terminal after switching and CN.Service flow switching method of the present invention and device both can be used for the regulating networks load balancing, can improve again the robustness of PMIPv6 system, were convenient to propagation and employment.
In the above-described embodiments, take the PMIPv6 agreement as example, the switching that how to realize Business Stream between many interfaces is described, but those skilled in the art should understand, if in other agreements such as MIPv6, the a plurality of network interfaces that satisfy portable terminal share same home agent HA, then can adopt equally method of the present invention to realize that the Business Stream between network interface switches.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described.Although with reference to embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, technical scheme of the present invention is made amendment or is equal to replacement, do not break away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. the multi-interface service flow switching method in the mobile communication system, for the second network interface that the Business Stream between the first network interface on the portable terminal of opposite end communication node and described mobile communication system is switched on this portable terminal, described first network interface and described second network interface are in same regional proxy mobile IPv 6 territory, the Business Stream of described first network interface and described second network interface is transmitted by same local mobile anchor, described first network interface accesses the first Mobile Access Gateway, described second network interface accesses the second Mobile Access Gateway, and described the first Mobile Access Gateway and described the second Mobile Access Gateway are connected respectively on the described local mobile anchor; The method comprises:
Step 1), triggering Business Stream handoff procedure, described portable terminal sends the request SH_Request that a Business Stream is switched to described second network interface from described first network interface by described second network interface to described local mobile anchor;
Step 2), after described local mobile anchor receives described SH_Request request, return Business Stream handover acknowledge SH_ACK to described portable terminal;
Set up the bidirectional tunnel between first network interface, second network interface, the second Mobile Access Gateway and local mobile anchor between step 3), described local mobile anchor and described portable terminal.
2. multi-interface service flow switching method according to claim 1, it is characterized in that, in described step 1), also comprise the content in the SH_Request request is saved in Business Stream switching table on the portable terminal, and in described step 2) in also comprise the content of resolving the SH_Request request receive and the Business Stream switching table that is saved in local mobile anchor, and comprise also that in described step 3) call number with described bidirectional tunnel writes respectively Business Stream switching table on the portable terminal and the Business Stream switching table of local mobile anchor; The method also comprises:
Step 4-1), described opposite end communication node sends packet to described first network interface;
Step 4-2), after described local mobile anchor receives packet, check the Business Stream switching table on the local mobile anchor, discovery will switch to described second network interface from described first network interface with the Business Stream relevant with packet;
Step 4-3), described local mobile anchor mails to the specified tunnel of described Business Stream switching table with described packet;
Step 4-4), described packet arrives described first network interface via described tunnel.
3. multi-interface service flow switching method according to claim 1, it is characterized in that, in described step 1), also comprise the content in the SH_Request request is saved in Business Stream switching table on the portable terminal, and in described step 2) in also comprise the content of resolving the SH_Request request receive and the Business Stream switching table that is saved in local mobile anchor, and comprise also that in described step 3) call number with described bidirectional tunnel writes respectively Business Stream switching table on the portable terminal and the Business Stream switching table of local mobile anchor; The method also comprises:
Step 5-1), described first network interface sends packet to described opposite end communication node;
Step 5-2), described portable terminal checks the Business Stream switching table on the portable terminal, discovery will switch to described second network interface from described first network interface with the Business Stream relevant with packet;
Step 5-3), described portable terminal arrives the specified tunnel of described Business Stream switching table with the Packet Generation that will send;
Step 5-4), described packet arrives described local mobile anchor via described tunnel, by described local mobile anchor with package forward to the opposite end communication node.
4. according to claim 1 and 2 or 3 described multi-interface service flow switching methods, it is characterized in that, the content of described SH_Request request comprises: the port numbers of Business Stream source address, Business Stream destination address and Business Stream.
5. according to claim 2 or 3 described multi-interface service flow switching methods, it is characterized in that, described Business Stream switching table comprises a gauge outfit and a plurality of list cell; Described gauge outfit comprises table name and list cell quantity; Described list cell comprises sequence number, Business Stream source address, Business Stream destination address, traffic flow port number, tunnel call number information.
6. the multi-interface service flow switching device shifter in the mobile communication system, it is characterized in that, for the second network interface that the Business Stream between the first network interface on the portable terminal of opposite end communication node and described mobile communication system on the Internet is switched on this portable terminal, described first network interface and described second network interface are in same regional proxy mobile IPv 6 territory, the Business Stream of described first network interface and described second network interface is transmitted by same local mobile anchor, described first network interface accesses the first Mobile Access Gateway, described second network interface accesses the second Mobile Access Gateway, and described the first Mobile Access Gateway and described the second Mobile Access Gateway are connected respectively on the described local mobile anchor; This device comprises Business Stream handover request initiation module, Business Stream handover request responder module, building tunnel module; Wherein,
Described Business Stream handover request initiation module is used for triggering the Business Stream handoff procedure, and described portable terminal sends the request SH_Request that a Business Stream is switched to described second network interface from described first network interface by described second network interface to described local mobile anchor;
Described Business Stream handover request responder module is used for so that after described local mobile anchor receives described SH_Request request, return Business Stream handover acknowledge SH_ACK to described portable terminal;
Described building tunnel module is used for so that set up bidirectional tunnel between first network interface, second network interface, the second Mobile Access Gateway and local mobile anchor between described local mobile anchor and described portable terminal.
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| CN102123526B (en) * | 2010-01-07 | 2014-04-30 | 华为技术有限公司 | Method, system and device for configuring multi-port mobile node port |
| CN102045776B (en) * | 2011-01-11 | 2013-06-12 | 中国科学院计算技术研究所 | Adaptive traffic stream switching method for communication network system and corresponding server |
| CN102833724B (en) * | 2011-06-14 | 2017-10-17 | 中兴通讯股份有限公司 | A kind of method and system for supporting multiplex roles multi-link communication |
| CN103532909B (en) * | 2012-07-04 | 2019-01-22 | 中兴通讯股份有限公司 | Multi-stream service concurrent transmission method, subsystem, system and multi-interface terminal |
| CN103294551A (en) * | 2013-06-05 | 2013-09-11 | 上海西本网络科技有限公司 | Interface call management method and server |
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| CN101150838A (en) * | 2006-09-18 | 2008-03-26 | 大唐移动通信设备有限公司 | A method and system for inter-system switching |
| WO2009007107A2 (en) * | 2007-07-10 | 2009-01-15 | Panasonic Corporation | Detection of mobility functions implemented in a mobile node |
| CN101383755A (en) * | 2007-09-04 | 2009-03-11 | 华为技术有限公司 | Proxy mobile IPv6 switching method and related network entity |
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| CN101150838A (en) * | 2006-09-18 | 2008-03-26 | 大唐移动通信设备有限公司 | A method and system for inter-system switching |
| WO2009007107A2 (en) * | 2007-07-10 | 2009-01-15 | Panasonic Corporation | Detection of mobility functions implemented in a mobile node |
| CN101383755A (en) * | 2007-09-04 | 2009-03-11 | 华为技术有限公司 | Proxy mobile IPv6 switching method and related network entity |
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