CN1599355A - IPv6 radio/mobile router suitable for dynamic changing network and realizing method - Google Patents

Abstract

This invention provides an IPv6 wireless/mobile router and its method suitable for dynamic variance networks, the router is composed of a router, a network route algorithm device, a dynamic host device, network safety protection system and a route list part and an input/output process device owned by traditional routers. The route transmission device has mobile IPV6 function, the route algorithm device suites the dynamic variance network, the route transmission device is related to route optimum communication feed back rotatable test between mobile nodes and their opposite communication ends. By setting up multiple route paths at the transmit/receive end, active and backup state by device.

Description

A kind of IPv6 of suitable dynamic change network is wireless/mobile router and implementation method

Affiliated technical field

The IPv6 that the present invention relates to a kind of suitable dynamic change network is wireless/mobile router and implementation method.

Background technology

In the information-intensive society of current develop rapidly, the indispensable instrument that network has become quick transmission information, expresses thoughts and exchanged mutually.And the continuous development that progresses rapidly along with science and technology, people are movable to be enlarged day by day with scope that exchanges and space, traditional needs that can not fully have been satisfied aspects such as human society, economy and military affairs by the communication network that wired fixed communication device constituted.How to constitute the major issue that mobile radio network has just become people to be concerned about.On the other hand, because existing IPv4 network exists such as the not high defective of address space scarcity, poor stability, poor mobility and service quality, the IPv4 network is replaced by follow-on IPv6 network becomes inevitable trend.The a lot of countries in the whole world that comprise China and international organization are all in the research and extension of actively developing aspect the relevant IPv6.Like this, one is adopted the difficult problem of IPv6 technology just to highlight in the radio/mobile network environment.

Fast development along with information network technique, especially the progressively application of new network technology, the use fixed terminal no longer is satisfied with in information requirement to people or single mobile terminal is connected to network, but wish the terminal organic assembling in certain range of attributes to be got up, obtain information with a metastable Internet of being integrated into with going up motion.We are called such network on the dynamic change network that is applicable to mobile environment.In order to provide the mobility support of Internet, the mobile IP protocol that IETF designed based on the IPv4 network in 1996; In order to overcome the defective of mobile IPv 4 at aspects such as address resource, fail safe and router efficiencies, IETF again based on the IPv6 design of protocol preliminary agreement of mobile IP v 6.The mobile IP protocol of existing two versions and the implementation method that some are relevant all are to adopt agency and tunneling technique, the function of transmitting-receiving IP grouping bag when providing mobile by the binding with IP terminal current location address and home address.But we are not difficult to find out that they all are the solutions of typically moving towards unit, obviously the demand of the whole subnet scoping dynamic change of incompatibility.If all use the method for existing mobile IP to set up route respectively for the main frame in the mobile subnetwork, not only can be because of distributing a large amount of location management message and set up independent Radio Link respectively and caused the waste on the resource for each terminal, and consider that in some safety and electromagnetic compatibility relatively harsher communication situation does not allow yet.Do like this and also have significantly deficiency at aspects such as router efficiency, performance of handoffs.In addition, there is safety issue in the IPv6 technical scheme that adopts among the existing mobile network when Care-of Address changes, the support of routing optimization communication can not be provided.

Summary of the invention

For overcome the deficiency of existing network mobile technology, the invention provides the IPv6 that a kind of suitable dynamic change network is provided wireless/mobile router and implementation method.Invention is at the characteristics of wireless dynamic change network self, by improvement to existing fixed network Routing Protocol, adopt information separated algorithm (IDA) that the route support of seamless, that do not introduce obvious delay and packet loss, low expense is provided for the dynamic change network, and the operation because of new algorithm does not cause handling bottleneck, is adapted to the main frame group motion of router or subnet scale and causes the Internet needs of topological structure high speed frequent variations.

The present invention can keep on the basis that the mobile IPv 6 protocol employing is acted on behalf of with tunneling technique is communicated by letter, and a kind of communication mode of optimization security is provided for communicating pair again; And support simultaneously the Care-of Address that mobile node uses is returned the route test, thereby avoided the safety problem of forging Binding Update from any local potential attacker of Internet.

The technical scheme that technical solution problem of the present invention is adopted is:

A kind of IPv6 of suitable dynamic change network is wireless/mobile router, routing algorithm device by routing forwarding device, network constitutes, DynamicHost configuration in addition in addition, routing table part and I/O processing unit that network security protection system and conventional router had are formed, it is characterized in that: the routing forwarding device has mobile IP v 6 function, routing algorithm device and adapts to the dynamic change network, but the routing forwarding device that wherein has a mobile IP v 6 function relate to can provide that routing optimization is communicated by letter between mobile node and the Correspondent Node return the route test.

A kind of IPv6 of suitable dynamic change network is wireless/the mobile router implementation method, but the route testing procedure that returns that routing optimization is communicated by letter between its mobile node and the Correspondent Node is; IPv6 is wireless/and mobile router is a multiaddress node, and it has a Care-of Address and a home address simultaneously, and wherein Care-of Address is used for the routing IP bag, and its prefix is the prefix of institute's access link network.Care-of Address is interim, must carry out one to it and return and could use after the routing capabilities inspection this address participation to communicate by letter; Home address is used for discerning IPv6 wireless/mobile router, its prefix is the prefix of home link network.Allow IPv6 wireless/mobile router need not change home address from a link moving to another link.No matter IPv6 wireless/mobile router is current at which link, can use this address with packet be forwarded to IPv6 wireless/mobile router.After moving to new link, IPv6 is wireless/and mobile router still can continue communicate by letter with other node.Therefore IPv6 wireless/behavior that mobile router leaves home link is transparent for transmission and upper-layer protocol.

Relation between home address and the Care-of Address is called as " binding ".When at foreign link, IPv6 is wireless/and mobile router can register present care-of address on the router as home agent.IPv6 is wireless/and mobile router carries out binding registration by sending " Binding Update " message to home agent." binding acknowledgement " message of the corresponding transmission of home agent.

With IPv6 wireless/the mobile router nodes in communication is called " Correspondent Node ", it promptly can be also can fixing of moving.IPv6 is wireless/and mobile router is registered by the opposite end provides its current position information to Correspondent Node, returns the foundation that the route test packet authenticates binding but Correspondent Node returns one.But in returning route test basic process, local initial testing and deliver the initial testing message and send simultaneously.This program only needs the communication node opposite end to do a spot of processing, and the local is tested and delivered test packet can very fast returning.

Invention adopts the method for setting up the multipath route to improve the reliability of dynamic change network routing protocol.This comprises two contents: be to set up many routed paths in the sending and receiving end on the one hand, activate and Status of Backups by being provided with, by the multirouting routing algorithm of modern network optimum theory, provide redundancy and failover timely and path scheduling of resource, flow equalization etc.; Be on this basis on the other hand, use information separated algorithm IDA, improve more reliable transmitted in packets.Information separated algorithm IDA uses the information separated matrix, with D _NmExpression:

$D_{\mathrm{nm}}=\left[\begin{array}{ccccc}1& {\mathrm{\φ}}_{\mathrm{1,1}}& {\mathrm{\φ}}_{\mathrm{1,2}}& \·& {\mathrm{\φ}}_{1,m-1}\\ 1& {\mathrm{\φ}}_{\mathrm{2,1}}& {\mathrm{\φ}}_{\mathrm{2,2}}& \·& {\mathrm{\φ}}_{2,m-1}\\ \·& \·& \·& \·& \·\\ 1& {\mathrm{\φ}}_{n,1}& {\mathrm{\φ}}_{n,2}& \·& {\mathrm{\φ}}_{n,m-1}\end{array}\right]---\left(1\right)$

Wherein, thus can longly be divided into n the fresh information substring P that length is the B/m bit for the information P of B bit with one _i', 1≤i≤n, that is,

$\left[\begin{array}{c}{P}_1^{\′}\\ P_2^{\′}\\ \·\\ P_n^{\′}\end{array}\right]=D_{\mathrm{nm}}\left[\begin{array}{c}{P}_1\\ P_2\\ \·\\ P_m\end{array}\right]---\left(2\right)$

If receiving end has been received P by a plurality of paths (1 to n bar) _i' m information substring because

$\left[\begin{array}{c}{P}_{i1}^{\′}\\ P_{i2}^{\′}\\ \·\\ P_{\mathrm{in}}^{\′}\end{array}\right]=\left[\begin{array}{ccccc}1& {\mathrm{\φ}}_{\mathrm{1,1}}& {\mathrm{\φ}}_{\mathrm{1,2}}& \·& {\mathrm{\φ}}_{1,m-1}\\ 1& {\mathrm{\φ}}_{\mathrm{2,1}}& {\mathrm{\φ}}_{\mathrm{2,2}}& \·& {\mathrm{\φ}}_{2,m-1}\\ \·& \·& \·& \·& \·\\ 1& {\mathrm{\φ}}_{n,1}& {\mathrm{\φ}}_{n,2}& \·& {\mathrm{\φ}}_{n,m-1}\end{array}\right]\left[\begin{array}{c}{P}_1\\ P_2\\ \·\\ P_m\end{array}\right]$

And matrix D _NmThe matrix of m row formation all is irreversible arbitrarily, therefore can solve raw information string P _iInformation separated algorithm IDA algorithm only requires m in n the fresh information substring after receiving end provides processing, just can recover raw information, promptly has the mistake tolerance that is (n-m) to the maximum.If each routed path can correctly transmit the incident of bit string and obey 2 distributions (correctly transmitting probability is p) of independent same parameter, then n fresh information substring distributed on the n bar routed path and transmit, it is (n that the correct number that receives new sub-bit string of receiving end is obeyed parameter, p) binomial distribution obtains the probability that receiving end correctly recovers raw information and is:

$\underset{k=m}{\overset{n}{\mathrm{\Σ}}}{C}_n^{k}p{(1-p)}^{n-k}---\left(3\right)$

By designing a cover multirouting routing algorithm, select rational n, m value adaptively according to measurement or empirical value, thereby the formula of making (3) can obtain the value bigger than p to p.Therefore the multirouting path mode of cutting apart based on information separated algorithm IDA can improve the probability that successfully receives grouping, has improved the reliability of transmitted in packets.

Beneficial effect of the present invention, characteristics at wireless dynamic change network self, by improvement to existing fixed network Routing Protocol, adopt novel routing algorithm to provide seamless for the dynamic change network, do not introduce obvious delay and packet loss, the route support of low expense is adapted to the main frame group motion of router or subnet scale and the Internet needs of the topological structure high speed frequent variations that causes.

In addition, the present invention can also keep on the basis that the mobile IPv 6 protocol employing is acted on behalf of with tunneling technique is communicated by letter, and a kind of communication mode of optimization security is provided for communicating pair again; And support simultaneously the Care-of Address that mobile node uses is returned the route test, thereby avoided the safety problem of forging Binding Update from any local potential attacker of Internet.

Description of drawings

Fig. 1 Traditional IP v6 router architecture

Fig. 2 dynamic change network IPv6 is wireless/the mobile router architecture

Fig. 3 dynamic change network IPv6 is wireless/mobile router protocol stack implementation

Fig. 4 dynamic change network mobile IP v 6 function realizes know-why

But Fig. 5 returns route test basic process

Routing optimization communication pattern between Fig. 6 mobile node and the Correspondent Node

Embodiment

As Fig. 1 is Traditional IP v6 router architecture, mainly be made up of the routing algorithm, the routing forwarding with static function, routing table and the I/O processing section that adapt to the conventional fixed network, the interface section of Traditional IP v6 router mainly is the interface of various cable networks in addition.

And as Fig. 2 be IPv6 wireless/the mobile router architecture, this router mainly contains the routing forwarding device with mobile IP v 6 function, the routing algorithm device that adapts to the dynamic change network constitutes, and also has in addition based on the DynamicHost configuration of IPv6, routing table part and the I/O processing unit that IPv6 network security protection system and conventional router are had.And on the wireline interface basis of conventional router, increase the 802.11x of various wave points such as WLAN (wireless local area network) WLAN and then can expand to 802.16,802.20 of wireless MAN WMAN.Because DynamicHost configuration, IPv6 network security protection system based on IPv6 are the functional module technology comparative maturities that can expand, are prior art substantially; The routing table part is then identical with traditional router feature module with the I/O processing section, the main contents of this patent comprise: have the mobile IP v 6 function the routing forwarding device, adapt to the routing algorithm device of dynamic change network, but wherein the routing forwarding device of mobile IP v 6 function relate generally to again can provide that routing optimization is communicated by letter between mobile node and the Correspondent Node return the route test.

A kind of IPv6 that is applicable to the dynamic change network environment is wireless/the mobile router implementation method, as Fig. 3 be IPv6 wireless/mobile router protocol stack implementation, the process among the figure can be used as independent application program.Interactive relation does not directly take place between the process of same level, and be responsible for receiving from user's configuration process, dynamic routing protocol state information and processing request and result, and handle the relevant information transmission of operating system nucleus by interface management unit by public function module process.Do like this and reduced the software code amount, improved the efficient of maintenance management.And owing to be the separate modular of compartment between each dynamic routing protocol, just can carry out agreement debugging and failure diagnosis easily and recover, not influence realization upgrading very easily under the overall condition.

The design mobile IP v 6 mainly contains three requirements, and the firstth, be fit to wireless telecommunications, because the wireless domain mobile IP technology is most widely used general, thus must consider the characteristics of wireless telecommunications when designing mobile IP, as narrow bandwidth, disturb problems such as big; The secondth, compatible as far as possible existing IP network is promptly changed existing software and hardware as far as possible less; The 3rd is that mobile node should not face new or more security threat than other node on the Internet.For this reason our IPv6 wireless/mobile router realizes that according to as shown in Figure 4 mobile IP v 6 function know-why constructs, support the basic conception of mobile IP v 6, the relevant extension header of IP and the relevant information support among the ICMP have been realized, consider that basic function realizes and strengthen rank realizing two kinds, be programmed in the operating system nucleus source code, and utilize the Hook Function that defines in the protocol datagram kernel transmittance process, and realize the interception of packet, adjust it and in protocol stack, flow.IPv6 is wireless/can adopt routing optimization communication pattern as shown in Figure 4 between mobile router and the Correspondent Node, need IPv6 wireless/mobile router binds present care-of address to Correspondent Node.The Care-of Address of the packet that sends from Correspondent Node can be routed directly to IPv6 wireless/mobile router.When sending to the packet of any IPv6 address, Correspondent Node all can be checked the binding clauses and subclauses of buffer memory.If find the clauses and subclauses of coupling, node just uses IPv6 type 2 route heads, routes a data packet to the Care-of Address of binding clauses and subclauses appointment.

With packet directly send to IPv6 wireless/Care-of Address of mobile router can obtain the shortest communication path.Also avoided simultaneously the obstruction of home link and home agent.In addition, can also alleviate the caused influence of breaking down of home agent and relevant link.

When directly to IPv6 wireless/when mobile router sent packet, Correspondent Node was made as destination address the Care-of Address of mobile node.In the extension header of IPv6, add type 2 route heads simultaneously, comprise desired home address.Similarly, mobile router is made as present care-of address with the source address of packet, adds new purpose head in the extension header of IPv6, comprises the home address of requirement.In packet, comprise home address, make that the use of Care-of Address is transparent for the agreement more than the IP layer.

Return route test basic process but be illustrated in figure 5 as, by test see packet whether can be according to the source address (Care-of Address) of mobile node statement and destination address (communication node address) but finish and return routing program.Mobile node only can prove that it receives the particular data key identification keygen tokens that Correspondent Node sends to these addresses, could pass through test.Such data are moved the managing keys Kbm that node is merged into a binding.But can make communication node accept the Care-of Address of current mobile node statement by returning the route test process.Communication node just can be accepted Binding Update from mobile node afterwards, will directly be sent to the Care-of Address of its statement again to the data traffic of mobile node by Binding Update indication communication node.

Local initial testing HoTI and deliver initial testing CoTI message and send simultaneously in Fig. 5.This program only needs Correspondent Node to do a spot of processing, and the local is tested HoT and delivered test CoT message can very fast returning.But below be four kinds of messages and the operation of returning route test.

One, local initial testing HoTI

Mobile node sends local initial testing HoTI message through home agent to Correspondent Node and obtains local key identification home keygen token.

Local initial testing HoTI message is transferred to Correspondent Node to the home address of mobile node.Mobile node also can send the initial cookie parameter in local simultaneously and pass to Correspondent Node, afterwards it is returned.Local initial testing HoTI message can enter reverse tunnel between mobile node and the home network by home agent.Mobile node keeps these cookie values, is used for confirming that the Correspondent Node that its protocol massages is required handled.

Two, deliver initial testing CoTI

Mobile node directly sends to Correspondent Node without home agent and delivers initial testing CoTI message, obtains to deliver key identification care-of keygen token.Mobile node also can send simultaneously to be delivered initial cookie parameter and passes to Correspondent Node, delivers initial testing CoTI message and also the Care-of Address of mobile node is sent to Correspondent Node.Mobile node simultaneously to Correspondent Node send one must return deliver initial cookie.

Three, local test HoT

Local test HoT message is a response local initial testing HoTI message.Send by home agent.The source address of message is the Correspondent Node address, and destination address is a home address, comprises the initial cookie in local, local key identification home keygen token and three parameters of local nonce index in addition.

Receive local initial testing HoTI message when Correspondent Node, it produces the local key identification in such a way:

home?keygen?token＝First(64，HMAC_SHA1(Kcn，(home?address|nonce|0)))

First (K, m) preceding K the bit of expression cancellation breath m, " | " expression series connection.Node key Kcn is the random digit of one 20 byte long producing of Correspondent Node, and it can be used for proving the local nonce that Correspondent Node produces and delivering nonce, and remembers the tabulation of all token that it sends without Correspondent Node.(K, m) expression is calculated message m with key K to calculate message authentication code MAC:HMAC_SHA1 with HMAC_SHA1.Among the HMAC_SHA1 is 0 an independent byte at last, is used for distinguishing local cookie and delivers cookie.

The local key identification is that preceding 64 bits by MAC form.The local key identification test that mobile node can be received is the message that sends to its home address.Local test HoT message sends to mobile node through home network, and home agent can be transmitted to mobile node with message by reverse tunnel.Safety of data obtains by encrypting the local key identification between home agent and the mobile node.

The initial cookie in local that mobile node produces is returned by local test HoT message, is used for confirmation message to come from the node in path between home agent and the Correspondent Node.

Local nonce index is sent to mobile node, makes Correspondent Node can find efficiently with the nonce value that generates the local key identification.

Four, deliver test CoT

Delivering test CoT message is used for responding and delivers initial testing CoTI message.This message by home agent, does not directly send to mobile node.The source address of message is the Correspondent Node address, and destination address is a Care-of Address, comprises in addition to deliver initial cookie, deliver key identification care-of keygen token and deliver three parameters of nonce index.

After Correspondent Node received to deliver initial testing CoTI message, it generates as follows delivered key identification:

care-of?keygen?token＝First(64，HMAC_SHA1(Kcn，(care-of?address|nonce|1)))

First (K, m) preceding K the bit of expression cancellation breath m, " | " expression series connection.Node key Kcn is the random digit of one 20 byte long producing of Correspondent Node, and it can be used for proving the local nonce that Correspondent Node produces and delivering nonce, and remembers the tabulation of all token that it sends without Correspondent Node.(K, m) expression is calculated message m with key K to calculate message authentication code MAC:HMAC_SHA1 with HMAC_SHA1.In the HMAC_SHA1 function last " 1 " is the byte of value for 0x01, is used for distinguishing local cookie and delivers cookie.

Preceding 64 bits of delivering key identification and being by MAC form, and directly send to the Care-of Address of mobile node.Deliver delivering initial cookie and will be returned among the initial testing CoTI, be used for confirmation message and come from the node in Correspondent Node path.

Delivering the nonce index is to be used for discerning the nonce that key identification is delivered in generation.Local and deliver the nonce index and can be the same or different is respectively at local HoT with deliver in the test CoT message.

After mobile node is received local test HoT and delivered two messages of test CoT, finish but return routing program.The result of program is that mobile node has obtained sending the needed data of Binding Update to Correspondent Node: key identification and nonce index.Mobile node lumps together two key identifications the Binding key Kbm that forms 20 bytes:

Kbm＝SHA1(home?keygen?token|care-of?keygen?token)

If Binding Update is the binding of setting up before being used for deleting, can deliver key identification.Accordingly, binding management key can followingly produce:

Kbm＝SHA1(home?keygen?token)

Breathe out western algorithm SHA1 and calculate the Ha Xi value.In addition, Correspondent Node can not keep the value of binding management key Kbm; It generates a binding management key Kbm when obtaining the address of nonce index and mobile node.

As Fig. 6 is routing optimization communication pattern schematic diagram between mobile node and the Correspondent Node.To carry out routing optimization between mobile node and the Correspondent Node and communicate by letter in order to make, but need mobile node to bind present care-of address through the route test of returning as shown in Figure 5 to Correspondent Node, the packet that sends from Correspondent Node just can be routed directly to the Care-of Address of mobile node afterwards.When receiving the packet of any IPv6 address, Correspondent Node all can be checked the binding clauses and subclauses of buffer memory.If find the clauses and subclauses of coupling, node just uses new IPv6 route head, routes a data packet to the Care-of Address of binding clauses and subclauses appointment.The Care-of Address that packet is directly sent to mobile node can obtain the shortest communication path.Also avoided simultaneously the obstruction of home link and home agent.In addition, can also alleviate the caused influence of breaking down of home agent and relevant link.

Claims (7)

1. The IPv6 of a suitable dynamic change network wireless/mobile router, by the routing forwarding device, the routing algorithm device of network constitutes, also has the DynamicHost configuration in addition, network security protection system, and the routing table that conventional router had part and I/O processing unit composition, it is characterized in that: the routing forwarding device has the mobile IP v 6 function, the routing algorithm device adapts to the dynamic change network, but the routing forwarding device that wherein has a mobile IP v 6 function relate to can provide that routing optimization is communicated by letter between mobile node and the Correspondent Node return the route test.
2. The IPv6 of a suitable dynamic change network wireless/the mobile router implementation method, it is characterized in that: a multiaddress node, have a Care-of Address and a home address simultaneously, wherein Care-of Address is used for the routing IP bag, its prefix is the prefix of institute's access link network, Care-of Address is interim, must carry out one to it and return and could use after the routing capabilities inspection this address participation to communicate by letter; Home address is used for discerning IPv6 wireless/mobile router, its prefix is the prefix of home link network.
3. 3. the IPv6 of a kind of suitable dynamic change network according to claim 2 is wireless/the mobile router implementation method, it is characterized in that: with IPv6 wireless/the mobile router nodes in communication is called " Correspondent Node ", be mobile or fixing, IPv6 is wireless/and mobile router is registered by the opposite end provides its current position information to Correspondent Node, but Correspondent Node returns one and returns the foundation that the route test packet authenticates binding, but in returning route test basic process, local initial testing and deliver the initial testing message and send simultaneously.
4. According to the IPv6 of claim 2 or 3 described a kind of suitable dynamic change networks wireless/the mobile router implementation method, its steps characteristic is: but see that by test whether packet can be that Care-of Address and destination address are that the communication node address is finished and returned routing program according to the source address of mobile node statement, mobile node only can prove that it receives the particular data key identification keygen tokens that Correspondent Node sends to these addresses, could pass through test, such data are moved the managing keys Kbm that node is merged into a binding, but can make communication node accept the Care-of Address of current mobile node statement by returning the route test process, communication node just can be accepted Binding Update from mobile node afterwards, will directly be sent to the Care-of Address of its statement again to the data traffic of mobile node by Binding Update indication communication node.
5. 5. the IPv6 of a kind of suitable dynamic change network according to claim 4 is wireless/the mobile router implementation method, it is characterized in that: but the four kinds of messages that have of route test returned, one, local initial testing HoTI message obtains local key identification home keygen token, local initial testing HoTI message is transferred to Correspondent Node to the home address of mobile node, mobile node also can send the initial cookie parameter in local simultaneously and pass to Correspondent Node, afterwards it is returned, mobile node keeps these cookie values, two, deliver initial testing CoTI, mobile node directly sends to Correspondent Node without home agent and delivers initial testing CoTI message, obtain to deliver key identification care-of keygen token, mobile node also can send simultaneously to be delivered initial cookie parameter and passes to Correspondent Node, deliver initial testing CoTI message and also the Care-of Address of mobile node is sent to Correspondent Node, mobile node simultaneously to Correspondent Node send one must return deliver initial cookie, three, local test HoT message is a response local initial testing HoTI message, the source address of message is the Correspondent Node address, destination address is a home address, comprise the initial cookie in local in addition, local key identification home keygen token and three parameters of local nonce index, four, delivering test CoT message is used for responding and delivers initial testing CoTI message, this message does not pass through home agent, directly send to mobile node, the source address of message is the Correspondent Node address, destination address is a Care-of Address, comprises in addition to deliver initial cookie, deliver key identification care-of keygen token and deliver three parameters of nonce index.
6. According to the IPv6 of claim 4 or 5 described a kind of suitable dynamic change networks wireless/the mobile router implementation method, it is characterized in that: set up many routed paths in the sending and receiving end, activate and Status of Backups by being provided with, by the multirouting routing algorithm of modern network optimum theory, provide redundancy and failover timely and path scheduling of resource, flow equalization.
7. 7. the IPv6 of a kind of suitable dynamic change network according to claim 6 is wireless/the mobile router implementation method, and it is characterized in that: use information separated algorithm IDA, information separated algorithm IDA uses the information separated matrix, with D _NmExpression:

   $D_{\mathrm{nm}}=\left[\begin{array}{ccccc}1& {\mathrm{\φ}}_{\mathrm{1,1}}& {\mathrm{\φ}}_{\mathrm{1,2}}& \·& {\mathrm{\φ}}_{1,m-1}\\ 1& {\mathrm{\φ}}_{\mathrm{2,1}}& {\mathrm{\φ}}_{\mathrm{2,2}}& \·& {\mathrm{\φ}}_{2,m-1}\\ \·& \·& \·& \·& \·\\ 1& {\mathrm{\φ}}_{n,1}& {\mathrm{\φ}}_{n,2}& \·& {\mathrm{\φ}}_{n,m-1}\end{array}\right]----\left(1\right)$

   Wherein, longly be divided into n the fresh information substring P ' that length is the B/m bit for the information P of B bit with one _i, 1≤i≤n, that is,

   $\left[\begin{array}{c}{P}_1^{\′}\\ P_2^{\′}\\ \·\\ P_n^{\′}\end{array}\right]=D_{\mathrm{nm}}\left[\begin{array}{c}{P}_1\\ P_2\\ \·\\ P_m\end{array}\right]----\left(2\right)$

   Receiving end has been received P by a plurality of paths (1 to n bar) _i' m information substring,

   $\left[\begin{array}{c}{P}_{i1}^{\′}\\ P_{i2}^{\′}\\ \·\\ P_{\mathrm{in}}^{\′}\end{array}\right]=\left[\begin{array}{ccccc}1& {\mathrm{\φ}}_{\mathrm{1,1}}& {\mathrm{\φ}}_{\mathrm{1,2}}& \·& {\mathrm{\φ}}_{1,m-1}\\ 1& {\mathrm{\φ}}_{\mathrm{2,1}}& {\mathrm{\φ}}_{\mathrm{2,2}}& \·& {\mathrm{\φ}}_{2,m-1}\\ \·& \·& \·& \·& \·\\ 1& {\mathrm{\φ}}_{n,1}& {\mathrm{\φ}}_{n,2}& \·& {\mathrm{\φ}}_{n,m-1}\end{array}\right]\left[\begin{array}{c}{P}_1\\ P_2\\ \·\\ P_m\end{array}\right]$

   Solve raw information string P _i, the probability that receiving end correctly recovers raw information is:

   $\underset{k=m}{\overset{n}{\mathrm{\Σ}}}{C}_n^{k}p{(1-p)}^{n-k}$

   Select rational n, m value adaptively according to measurement or empirical value, obtain the value bigger than p to p.

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